CERAMIC TILE LEVELING DEVICE

Description

RELATED APPLICATIONS

This application is a continuation-in-part (CIP) application claiming benefit of PCT/CN2023/094990 filed on May 18, 2023, which claims priority to Chinese Patent Application No. 202310515801.0 filed on May 8, 2023, the disclosures of which are incorporated herein in their entirety by reference.

TECHNICAL FIELD

This application relates to the field of construction engineering, and in particular relates to a ceramic tile leveling device.

BACKGROUND ART

When laying objects such as ceramic tiles, bricks, or thick plates, leveling pads are usually used to ensure smooth laying and even spacing between the ceramic tiles. Currently known leveling tools typically have a base. The base is disposed beneath two horizontally adjacent ceramic tiles. It specifically extends from the base to define the width of a gap between the ceramic tiles and actually limit adjacent portions of edges of the ceramic tiles. In order to make the upper surfaces of the ceramic tile flat, a fixing member is also needed. The existing fixing member fixes the ceramic tiles by rotation and translation, which has the following disadvantages: the fixing member needs to rotate along the adjacent portions; when the fixing member has already contacted the surfaces of the ceramic tiles, continuously rotating the fixing member may cause the ceramic tiles to move and be misaligned, making the spacing uneven.

Therefore, those skilled in the art are committed to developing a ceramic tile leveling device that can prevent ceramic tiles from moving and being misaligned while fixing the surfaces of the ceramic tiles.

SUMMARY

In view of the above-mentioned defects in the existing technology, the technical problem to be solved by this application is how to prevent the ceramic tiles from moving with the rotation of the fixing member when fixing the surfaces of the ceramic tiles.

To achieve the above objectives, this application provides a ceramic tile leveling device, comprising:

• • a first component, configured to be disposed between adjacent ceramic tiles, wherein the first component comprises a base and a supporting portion vertically extending upwards from the base, wherein a lower portion of the supporting portion is a sheet-shaped portion, and an upper portion thereof is a rod-shaped portion; and a joint between the supporting portion and the base is arranged as a tearable portion;
  • a second component, configured to fix the first component between the ceramic tiles, wherein the second component comprises a cylindrical channel for receiving the rod-shaped portion; and
  • a third component, connected to a bottom of the second component, wherein at least part of the third component protrudes out of the second component; the third component is configured such that the third component contacts the ceramic tiles first to fix the ceramic tiles when the second component moves towards the ceramic tiles.

Further, the second component comprises a limiting portion, and the limiting portion connects the third component to the second component.

Further, the third component is a ring-shaped component and is configured to be rotatable relative to the second component.

Further, the bottom of the second component is a circular flange, the limiting portion is arc-shaped, the limiting portion and the circular flange are arranged opposite to each other, and the curvature of the limiting portion is the same as the curvature of the circular flange.

Further, a groove is formed between the limiting portion and the circular flange, and the third component is arranged in the groove.

Further, the limiting portion comprises a first protrusion extending towards the limiting portion, the limiting portion comprises a second protrusion extending along the flange, and the first protrusion is arranged above the second protrusion.

Further, the number of the limiting portion is more than one, which are uniformly distributed along the circumferential direction of the circular flange.

Further, the bottom of the second component is cylindrical and has a side wall along a vertical direction; the third component is a ring-shaped component with a U-shaped cross section, and the side wall is accommodated in a U-shaped groove of the third component.

Further, the limiting portion comprises a groove disposed along a circumferential direction on a surface of the side wall of the second component, an end portion of the third component is provided with a protrusion extending towards the second component, and the protrusion falls into the groove.

Further, the groove is provided in an outer surface of the side wall.

Further, the bottom of the second component is cylindrical and has a side wall along a vertical direction; and the third component is connected to one side of the side wall of the second component.

Further, one side of the side wall of the second component opposite to the third component is provided with at least one first groove disposed along a circumferential direction, and a bottom of the first groove is provided with a through hole; the limiting portion comprises at least one arc-shaped component arranged in the first groove, and the arc-shaped component is provided with a protrusion capable of passing through the through hole; one side of the third component facing towards the arc-shaped component is provided with a second groove disposed along the circumferential direction, and the protrusion falls into the second groove.

Further, the side wall of the second component is provided with a plurality of first grooves, the plurality of first grooves are uniformly disposed in the circumferential direction of the second component; the limiting portion comprises a plurality of arc-shaped components corresponding to the plurality of first grooves one to one.

Further, the bottom of the first groove is provided with a plurality of through holes, and the arc-shaped component is provided with a plurality of protrusions corresponding to the plurality of through holes one to one.

Further, the limiting portion comprises a connecting member, and the connecting member is located on one side of the bottom of the second component facing towards the ceramic tiles; and the third component is composed of a plurality of balls arranged between the second component and the connecting member.

Further, the bottom of the second component is provided with a plurality of positioning grooves, and the plurality of balls are respectively placed in the corresponding positioning grooves; the connecting member is provided with through holes respectively corresponding to the plurality of positioning grooves, and portions of the balls pass through the through holes.

Further, the second component comprises a head, a center of the head is provided with a cylindrical through hole, and a side wall of the cylindrical through hole is provided with a thread.

Further, the second component comprises a head, a center of the head is provided with a cylindrical through hole, and the diameter of the cylindrical through hole is greater than the outer diameter of the rod-shaped component.

Further, the second component further comprises a rotating member, one end of the rotating member passes through the side wall of the head and enters the cylindrical through hole; the rotating member is connected to the head through a pivot shaft, the end portion of the rotating member facing towards the rod-shaped portion is provided with at least one tooth, and the tooth are engaged with the thread of the rod-shaped portion.

Further, the rotating member is configured such that the tooth is engaged with the thread of the rod-shaped portion in an initial state, and the tooth of the rotating member is disengaged from the rod-shaped portion after the rotating member is pressed.

This application further provides a ceramic tile leveling device, comprising:

• • a first component, configured to be disposed between adjacent ceramic tiles, wherein the first component comprises a base and a supporting portion vertically extending upwards from the base, wherein a lower portion of the supporting portion is a sheet-shaped portion, and an upper portion thereof is a rod-shaped portion; and a joint between the supporting portion and the base is arranged as a tearable portion;
  • a second component, configured to move towards the base under a drive of an external force to fix the first component between the ceramic tiles, wherein the second component comprises a cylindrical channel for receiving the rod-shaped portion; and
  • a third component, connected to a bottom of the second component, wherein at least part of the third component protrudes out of the second component; the third component is configured such that the third component contacts the ceramic tiles first to fix the ceramic tiles when the second component moves towards the ceramic tiles.

Further, the second component comprises a limiting portion, and the limiting portion connects the third component to the second component.

Further, the third component is a ring-shaped component and is configured to be rotatable relative to the second component.

Further, the bottom of the second component is a circular flange, the limiting portion is arc-shaped, at least one groove is formed between the limiting portion and the circular flange, and the third component is arranged in the groove.

Further, the bottom of the second component is cylindrical and has a side wall along a vertical direction; the third component is a ring-shaped component with a U-shaped cross section, and the side wall is accommodated in a U-shaped groove of the third component.

Further, the limiting portion comprises a groove disposed along a circumferential direction on a surface of the side wall of the second component, an end portion of the third component is provided with a protrusion extending towards the second component, and the protrusion falls into the groove.

Further, the bottom of the second component is cylindrical and has a side wall along a vertical direction; and the third component is connected to one side of the side wall of the second component.

Further, one side of the side wall of the second component opposite to the third component is provided with at least one first groove disposed along a circumferential direction, and a bottom of the first groove is provided with a through hole; the limiting portion comprises at least one arc-shaped component arranged in the first groove, and the arc-shaped component is provided with a protrusion capable of passing through the through hole; one side of the third component facing towards the arc-shaped component is provided with a second groove disposed along the circumferential direction, and the protrusion falls into the second groove.

Further, the limiting portion comprises a connecting member, and the connecting member is located on one side of the bottom of the second component facing towards the ceramic tiles; and the third component is composed of a plurality of balls arranged between the second component and the connecting member.

Further, the bottom of the second component is provided with a plurality of positioning grooves, and the plurality of balls are respectively placed in the corresponding positioning grooves; the connecting member is provided with through holes respectively corresponding to the plurality of positioning grooves, and portions of the balls pass through the through holes.

Further, the ceramic tile leveling device further comprises a force assisting mechanism, and the force assisting mechanism is connected to the second component; the force assisting mechanism is configured to apply the external force to the second component to drive the second component to move and automatically stop driving the second component when the external force exceeds a threshold.

Further, the force assisting mechanism comprises:

• • a first transmission block, configured to rotate under the drive of the external force;
  • a second transmission block, in torque connection with the first transmission block; and
  • a connecting component, in torque connection with the second transmission block and provided with a structure in torque connection with the second component;
  • wherein a torque overload cutoff structure is provided between the first transmission block and the second transmission block, and the torque overload cutoff structure is configured such that a torque is transmitted between the first transmission block and the second transmission block when the external force is less than the threshold, and the first transmission block automatically stops transmitting the torque to the second transmission block when the external force exceeds the threshold.

Further, the torque overload cutoff structure comprises at least one first ratchet tooth arranged on the first transmission block and at least one second ratchet tooth arranged on the second transmission block, and the first ratchet tooth and the second ratchet tooth are configured such that the first ratchet tooth and the second ratchet tooth are engaged with each other when the external force is less than the threshold, and the first ratchet tooth is disengaged from the second ratchet tooth when the external force exceeds the threshold.

Further, the first ratchet tooth and the second ratchet tooth each comprise an inclined surface and a flat surface, wherein the inclined surface of the first ratchet tooth contacts the inclined surface of the second ratchet tooth to achieve engagement when the external force is less than the threshold, and

• • the inclined surface of the first ratchet tooth and the inclined surface of the second ratchet tooth undergo relative sliding to achieve disengagement when the external force exceeds the threshold.

Further, the second component has a cylindrical head, the connecting component has a first connecting hole that matches the head, and the head is inserted into the first connecting hole.

Further, the force assisting mechanism further comprises a connecting rod, one end of the connecting rod is connected to the second transmission block, and another end of the connecting rod is connected to the connecting component.

Further, the second transmission block and the connecting component are provided with an elastic element, and the second transmission block is configured to be able to reciprocate along the connecting rod.

Further, the first transmission block is provided with a transmission shaft, one end of the transmission shaft is inserted into the first transmission block, and another end is provided with a structure connected to a force applying tool.

Further, the force assisting mechanism further comprises an outer sleeve, and the first transmission block, the second transmission block and the connecting component are all located in the outer sleeve.

This application further provides a force assisting mechanism connected to the second component and configured to apply the external force to the second component to drive the second component to move and automatically stop driving the second component when the external force exceeds the threshold, wherein

• • the force assisting mechanism comprises:
  • a first transmission block, configured to rotate under the drive of the external force;
  • a second transmission block, in torque connection with the first transmission block; and
  • a connecting component, in torque connection with the second transmission block and provided with a structure in torque connection with the second component;
  • wherein a torque overload cutoff structure is provided between the first transmission block and the second transmission block, and the torque overload cutoff structure is configured such that a torque is transmitted between the first transmission block and the second transmission block when the external force is less than the threshold, and the first transmission block automatically stops transmitting the torque to the second transmission block when the external force exceeds the threshold.

The ceramic tile leveling device provided in this application has the following beneficial technical effects:

• • 1. Using the ceramic tile leveling device provided in this application, when the second component rotates along the first component and moves towards the ceramic tiles, the third component first contacts the ceramic tiles and fixes the ceramic tiles. Afterwards, as the second component continues to rotate, the ceramic tiles will not be displaced or misaligned, thus helping to ensure that the gap between the ceramic tiles can be kept even.
  • 2. The added force assisting mechanism can be connected to the external force applying tool to apply a driving force to the second component, thus promoting the rapid adjustment of the second component and improving the operating efficiency. At the same time, the force assisting mechanism can stop applying the driving force to the second component when the torque exceeds the threshold, thus helping to form a uniform mechanical torque. Even if the force applied by an operator is different, the final torque acting on the second component through the force assisting mechanism is uniform, and the tightness when the second component rotates to the lowest position is consistent, so that the flatness positioning position of different ceramic tiles is consistent in the leveling process, thus ensuring that the ceramic tiles reach a better flat state.

The concept, specific structure, and technical effects of this application will be further described with reference to the accompanying drawings, so as to fully understand the objectives, features, and effects of this application.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of a ceramic tile leveling device in use according to embodiment 1;

FIG. 2 is a schematic structural view of a ceramic tile leveling device according to embodiment 1;

FIG. 3 is a schematic exploded view of a ceramic tile leveling device according to embodiment 1;

FIG. 4 is a schematic structural view of a first component according to embodiment 1;

FIG. 5 is a partial enlarged view of FIG. 4;

FIG. 6 is a bottom view of FIG. 4;

FIG. 7 is a schematic structural view of a second component according to embodiment 1;

FIG. 8 is a schematic internal structural view of a second component according to embodiment 1;

FIG. 9 is a schematic exploded view of FIG. 8;

FIG. 10 is a schematic view of FIG. 7 from another perspective;

FIG. 11 is a schematic exploded view of FIG. 10;

FIG. 12 is a bottom view of FIG. 7;

FIG. 13 is a schematic cross-sectional view of a ceramic tile leveling device in use according to embodiment 1;

FIG. 14 is a schematic view of a second component provided with three limiting portions according to embodiment 1;

FIG. 15 is a schematic view of a second component provided with three ribs according to embodiment 1;

FIG. 16 is a schematic structural view of a second component according to embodiment 2;

FIG. 17 is a schematic exploded view of a second component according to embodiment 2;

FIG. 18 is a schematic internal structural view of a second component according to embodiment 2;

FIG. 19 is a schematic structural view of a second component according to embodiment 3;

FIG. 20 is a schematic exploded view of a second component according to embodiment 3;

FIG. 21 is a schematic internal structural view of a second component according to embodiment 3;

FIG. 22 is a schematic structural view of a second component according to embodiment 4;

FIG. 23 is a schematic exploded view of a second component according to embodiment 4;

FIG. 24 is a schematic structural view according to embodiment 5;

FIG. 25 is a schematic structural view according embodiment 6, showing an axonometric view after a force assisting mechanism is connected to a second component;

FIG. 26 is a schematic cross-sectional view according to embodiment 6, showing an internal structure for connection between a force assisting mechanism and a second component;

FIG. 27 is a front view of a force assisting mechanism;

FIG. 28 is a schematic view of section A-A of FIG. 27;

FIG. 29 is a schematic exploded view of a force assisting mechanism;

FIG. 30 is a schematic view of FIG. 29 from another perspective;

FIG. 31 is a schematic internal view of a force assisting mechanism after an outer sleeve is removed, showing that a first ratchet tooth and a second ratchet tooth are in a disengaged state;

FIG. 32 is a schematic internal view of a force assisting mechanism after an outer sleeve is removed, showing that a first ratchet tooth and a second ratchet tooth are in an engaged state;

FIG. 33(a)-33(c) are schematic structural views of a first transmission block; and

FIG. 34(a)-34(c) are schematic structural views of a second transmission block.

DETAILED DESCRIPTION OF EMBODIMENTS

Multiple preferred embodiments of this application will be introduced below with reference to the accompanying drawings, so as to make its technical content clearer and easier to understand. This application may be embodied through many different forms of embodiments, the scope of protection of this application is not limited to the embodiments mentioned herein.

In the accompanying drawings, components with the same structure are labeled with the same numbers, and components with similar structures or functions are labeled with similar numbers. The size and thickness of each component shown in the accompanying drawings are arbitrary. This application does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of some components in the accompanying drawings has been appropriately exaggerated.

As shown in FIG. 1, FIG. 13 and FIG. 24, this application further provides a ceramic tile leveling device 10, comprising a first component 100 and a second component 200. The first component 100 comprises a base 110 and a supporting portion 120 vertically extending upwards from the base 110, wherein a joint between the supporting portion 120 and the base 110 is arranged as a tearable portion 124, which can achieve the separation of the supporting portion 120 from the base 110; a lower portion of the supporting portion 120 is configured to be sheet-shaped, and an upper portion is configured to be rod-shaped. When in use, the first component 100 is placed between at least two adjacent ceramic tiles 20, wherein the base 110 is located below the ceramic tiles 20, the lower portion of the supporting portion 120 is located in a gap 21 between the ceramic tiles 20, and the upper portion of the supporting portion 120 protrudes from upper surfaces of the ceramic tiles 20.

The second component 200 is used for fixing the first component 100 between the ceramic tiles. The second component 200 comprises a cylindrical channel 201 for receiving a rod-shaped portion 122 of the supporting portion 120. When in use, the cylindrical channel 201 of the second component 200 is sleeved on an outer side of the rod-shaped portion 122, and the second component 200 may rotate relative to the rod-shaped portion 122. A bottom 220 of the second component 200 may be used for contacting the upper surfaces of the ceramic tiles 20. The second component 200 may rotate and move upwards and downwards along the supporting portion 120. When the second component 200 rotates and moves downwards along the supporting portion 120, the bottom 220 of the second component 200 is pressed against the upper surfaces of the ceramic tiles 20, thus fixing the first component 100 between the ceramic tiles 20. The bottom 220 of the second component 200 is provided with a third component 300. When the second component 200 rotates downwards along the supporting portion 120, the third component 300 first contacts the surfaces of the ceramic tiles 20, then the second component 200 continues to move towards the ceramic tiles 20, and the third component 300 is fixed on the upper surfaces of the ceramic tiles 20. At this time, the second component 200 continues to rotate, and the third component 300 no longer rotates with the second component 200, but is fixed on the upper surfaces of the ceramic tiles 20, so that the ceramic tiles 20 can be prevented from rotating with the second component 200, thus preventing the ceramic tiles 20 from moving and being misaligned.

In the existing technology, after the second component rotates downwards along the supporting portion and the second component contacts the upper surfaces of the ceramic tiles, in order to fix the first component as much as possible, the second component still needs to be rotated. At this time, since the second component has already been in contact with the ceramic tiles, pressure will be generated between the second component and the ceramic tiles. Continuing to rotate the second component may cause the ceramic tiles to move or be misaligned, resulting in uneven spacing between the ceramic tiles. However, by using the ceramic tile leveling device 10 provided in this application, the third component 300 is fixed on the upper surfaces of the ceramic tiles 20, so that the ceramic tiles 20 can be prevented from moving or being misaligned due to the rotation with the second component 200, thus making the spacing between the ceramic tiles 20 more even.

The ceramic tile leveling device 10 in this application will be described below through multiple embodiments.

Embodiment 1

FIG. 1 to FIG. 15 show embodiment 1. As shown in FIG. 4, the first component 100 is provided with a base 110, and a supporting portion 120 is formed by vertically protruding upwards from the base 110, wherein a lower portion of the supporting portion 120 is sheet-shaped, the end of the sheet-shaped portion 121 (the end portion away from the base 110) is approximately conical, an upper portion of the supporting portion 120 is rod-shaped, and the end of the rod-shaped portion 122 is connected to the conical end of the sheet-shaped portion 121. The rod-shaped portion 122 is provided with a thread 123. A joint between the supporting portion 120 and the base 110 is arranged as a tearable portion 124, which can achieve the separation of the supporting portion 120 from the base 110. In some implementations, the thickness of the tearable portion 124 is reduced compared with the sheet-shaped portion 121 of the supporting portion 120, making it easier to tear. In some other implementations, as shown in FIG. 5, the width of the tearable portion 124 is reduced compared with the sheet-shaped portion 121 of the supporting portion 120. At the same time, the tearable portion 124 is provided with a plurality of slot holes 125 that run through along the thickness direction of the sheet-shaped portion 121.

As shown in FIG. 5 and FIG. 6, an upper surface 111 of the base 110 is used for contacting the lower surfaces of the ceramic tiles 20, and the upper surface 111 of the base 110 is approximately a flat surface. The thickness h of the base 110 decreases from the middle to two ends of the base 110, and the width x of the base 110 also decreases from the middle to two ends of the base 110. The two ends of the base 110 are respectively provided with grooves 112. The grooves 112 run through the base 110 along the thickness direction of the base 110.

It should be understood that the structure of the first component 100 is not limited to this embodiment, and other structures comprising the threaded rod-shaped portion 122 may be applied to this application. Preferably, the first component 100 is manufactured through integral molding.

As shown in FIG. 7, a central portion of the second component 200 is provided with a cylindrical channel 201, and the cylindrical channel 201 is used for receiving the rod-shaped portion 122 of the supporting portion 120. A side wall of the cylindrical channel 201 is provided with a thread engaged with the rod-shaped portion 122. The bottom 220 of the second component 200 will contact the upper surfaces of the ceramic tiles. When the second component 200 rotates along the supporting portion 120 towards the ceramic tiles 20, the bottom 220 of the second component 200 contacts the upper surfaces of the ceramic tiles 20, and as the second component 200 rotates, the first component 100 is fixed between the ceramic tiles 20. The shape of the second component 200 does not constitute a limitation on this application. For example, the second component 200 may be square, cylindrical, or in other shapes. As long as the inside of the second component 200 is provided with a cylindrical channel 201 coupled with the rod-shaped portion 122 of the supporting portion 120, the function of fixing the first component 100 by using the second component 200 can be achieved.

In this embodiment, as shown in FIG. 8, the second component 200 comprises a head 210 provided with a cylindrical channel 201, a bottom 220 provided with a circular flange 221, and a side wall 230 extending from the head 210 to the bottom 220. The insides of the side wall 230 and the bottom 220 are configured to be hollow, thus forming a cavity 231. The cavity 231 is communicated with the cylindrical channel 201 and runs through the entire second component 200.

The side wall 230 comprises a cylindrical portion 232 in a center and ribs 233 located on a side surface of the cylindrical portion 232, wherein the number of the ribs 233 may be two or more, which are uniformly distributed around the cylindrical portion 232. For example, FIG. 7 shows two ribs 233, and FIG. 15 shows three ribs 233.

As shown in FIG. 8, FIG. 9, FIG. 10, FIG. 11, FIG. 12 and FIG. 15, one side of the circular flange 221 facing towards the ceramic tiles is provided with a third component 300. When the second component 200 rotates along the supporting portion 120 to move towards the ceramic tiles 20, the third component 300 first contacts the surfaces of the ceramic tiles 20, and then the third component 300 no longer rotates with the second component 200. In this way, the second component 200 continues to rotate to fix the first component 100, and the ceramic tiles 20 will not be deviated or misaligned under the fixing effect of the third component 300, thus helping to keep the gap between the ceramic tiles 20 more even. In this embodiment, the third component 300 is a ring-shaped component arranged in the circular flange 221. Specifically, as shown in the figures, the bottom 220 of the second component 200 is provided with at least one arc-shaped limiting portion 222, and the curvature of the limiting portion 222 matches the curvature of the flange 221, that is, the limiting portion 222 is approximately parallel to the flange 221, thus forming a groove 223 between the limiting portion 222 and a side wall of the flange 221. The ring-shaped component is mounted in the groove 223. At the same time, a first protrusion 301 is formed on the ring-shaped component towards the limiting portion 222, a second protrusion 2221 is formed on the limiting portion 222 towards the flange 221, and the first protrusion 301 is clamped on the second protrusion 2221. In this way, the limiting portion 222 connects the ring-shaped component to the flange 221, but the limiting portion 222 does not restrict the degree of freedom of the third component 300 along the circumferential direction of the flange 221. When the third component 300 contacts the surfaces of the ceramic tiles, the second component 200 rotates, while the third component 300 no longer rotates. In some implementations, as shown in the figures, the groove 223 may run through to the upper surface of the flange 221.

The number of the limiting portions 222 may be set according to the actual needs. For example, FIG. 12 shows two limiting portions 222 and the two limiting portions are symmetrically arranged; FIG. 14 shows three limiting portions 222, which are uniformly arranged along the circumferential direction of the flange 221.

A process of using the ceramic tile leveling device 10 in this embodiment is as follows: the first component 100 is placed between adjacent ceramic tiles 20, wherein the base 110 is located below the ceramic tiles, the sheet-shaped portion 121 of the supporting portion 120 is located in a gap between the ceramic tiles 20, and the rod-shaped portion 122 of the supporting portion 120 protrudes out of the ceramic tiles 20; the cylindrical channel 201 of the second component 200 is engaged with the rod-shaped portion 122, the second component 200 is rotated so that the second component 200 moves towards the ceramic tiles 20; after the second component 200 moves a certain distance, the third component 300 first contacts the upper surfaces of the ceramic tiles 20, the second component 200 is continuously rotated, the third component 300 is fixed on the upper surfaces of the ceramic tiles 20 and does not rotate with the second component 200 of the second component 200; at this time, as the second component 200 continues to rotate, the ceramic tiles 20 will not be deviated or moved, thus ensuring the evenness of the gap 21 between the ceramic tiles 20.

Embodiment 2

FIG. 16 to FIG. 18 show embodiment 2. In this embodiment, the first component 100 is the same as that in embodiment 1, which will not be repeated here.

The difference between the second component 200 in this embodiment and the second component 200 in embodiment 1 is that the third component 300 is fixed on the second component 200 in a different way.

As shown in FIG. 17 and FIG. 18, the bottom 220 of the second component 200 is cylindrical and provided with a side wall 240 along the vertical direction; the third component 300 is a ring-shaped component with a U-shaped cross section, and the side wall of the bottom 220 of the second component 200 is accommodated in a U-shaped groove 301 of the ring-shaped component.

The surface of the side wall 240 of the bottom 220 is provided with a groove 241 disposed along the circumferential direction. An end portion of one side wall of the third component 300 is provided with a protrusion 311 extending towards the second component 200. When the third component 300 accommodates the bottom 220, the protrusion 311 falls into the groove 241, thus connecting the third component 300 to the second component 200. The groove 241 may be provided in the inner surface of the bottom 220, or as shown in the figure, provided in the outer surface of the bottom 220. Accordingly, it can be seen that the groove 241 provided in the side wall 240 of the bottom 220 forms a limiting portion, thus connecting the third component 300 to the second component 200. The groove 241 does not restrict the degree of freedom of the third component 300 along the circumferential direction of the second component 200, that is, the second component 200 can rotate relative to the third component 300.

The other structures of the second component 200 in this embodiment, such as the cylindrical channel 201, the side wall 230 connecting the head 210 and the bottom 220, and the cavity 231 in the side wall 230, are the same as those in embodiment 1.

When the ceramic tile leveling device 10 in this embodiment is in use, and when the second component 200 rotates to move downwards along the supporting portion 120, the third component 300 first contacts the upper surfaces of the ceramic tiles 20. When the second component 200 is continuously rotated, the third component 300 can be fixed on the surfaces of the ceramic tiles 20 to prevent the ceramic tiles 20 from being deviated with the rotation of the second component 200.

Embodiment 3

FIG. 19 to FIG. 21 show embodiment 3. In this embodiment, the first component 100 is the same as that in embodiment 1, which will not be repeated here.

The difference between the second component 200 in this embodiment and the second component 200 in embodiment 1 is that the third component 300 is fixed on the second component 200 in a different way.

As shown in FIG. 20 and FIG. 21, the bottom 220 of the second component 200 is cylindrical and has a side wall along the vertical direction. The third component 300 is a ring-shaped component mounted on the inner side of the bottom 220, and the bottom end of the third component 300 protrudes out of the bottom 220 of the second component 200. The outer side of the side wall of the bottom 220 is provided with at least one first groove 251 along the circumferential direction. A through hole 252 is formed in the bottom 220 of the first groove 251. The position of the third component 300 corresponding to the first groove 251 is provided with a second groove 320 along the circumferential direction. An arc-shaped component 260 is accommodated in the first groove 251. The inner side of the arc-shaped component 260 is provided with a protruding portion 261. The protruding portion 261 passes through the through hole 252 of the first groove 251 and enters the second groove 320 of the third component 300. In this way, the third component 300 is connected to the second component 200 through the arc-shaped component 260. It should be understood that the number of the first grooves 251 may be set according to the actual needs. For example, the number of the first groove 251 may be one, that is, the first groove 251 forms a circular ring on the side wall of the bottom 220. Alternatively, as shown in the figures, the number of the first grooves 251 is two, which are arranged symmetrically. Alternatively, the number of the first grooves 251 may be more than one, which are uniformly disposed along the circumferential direction of the side wall. It should also be understood that the number of the through holes 252 in the bottom 220 of the first groove 251 may be more than one, that is, a plurality of through holes 252 may be provided in the bottom 220 of one first groove 251. Correspondingly, the number of the protruding portions 261 of the arc-shaped component 260 matches the number of the through holes 252. Through the cooperation between the second groove 320 of the third component 300 and the protruding portion 261 of the arc-shaped component 260, the degree of freedom of the third component 300 along the circumferential direction of the second component 200 is not restricted, and the second component 200 can rotate relative to the third component 300.

When the ceramic tile leveling device 10 in this embodiment is in use, and when the second component 200 rotates to move downwards along the supporting portion 120, the bottom end of the third component 300 protrudes out of the bottom 220 of the second component 200, so that the third component 300 first contacts the upper surfaces of the ceramic tiles. When the second component 200 is continuously rotated, the third component 300 can be fixed on the surfaces of the ceramic tiles to prevent the ceramic tiles from being deviated with the rotation of the second component 200.

Embodiment 4

FIG. 22 to FIG. 23 show embodiment 4. In this embodiment, the first component 100 is the same as that in embodiment 1, which will not be repeated here.

The difference between the second component 200 and the second component 200 in embodiment 1 is that the structure of the third component 300 and the way it is fixed on the second component 200 are different.

As shown in the figures, the bottom 220 of the second component 200 is connected to a connecting member 270, the shape of the connecting member 270 matches the shape of the bottom 220, and it is arranged on the surface of the bottom 220 facing towards the ceramic tiles. The surface of the bottom 220 facing towards the connecting member 270 is provided with a plurality of positioning grooves 271, and positions on the connecting member 270 corresponding to the positioning grooves 271 are provided with through holes 272. The third component 300 is composed of balls, each ball is arranged in the positioning groove 271, and portions of the balls pass through the through holes 272 of the connecting members 270, so that portions of the balls protrude out of the second component 200. Preferably, the plurality of positioning grooves 271 are uniformly disposed along the circumferential direction, so that a plurality of balls are uniformly distributed at the bottom 220. In this embodiment, the third component 300 is composed of balls, and the connecting member 270 forms a limiting portion to connect the balls to the second component 200. After the balls contact the surfaces of the ceramic tiles 20, the second component 200 continues to rotate, and the balls will roll in place, that is, the positions of the balls relative to the ceramic tiles do not change, and the second component 200 rotates relative to the balls, thus preventing the ceramic tiles from being deviated.

When the ceramic tile leveling device 10 in this embodiment is in use, and when the second component 200 rotates to move downwards along the supporting portion 120, the third component 300, i.e., portions of the balls, protrudes out of the bottom 220 of the second component 200, so that the balls first contact the upper surfaces of the ceramic tiles. When the second component 200 is continuously rotated, the balls roll in place on the surfaces of the ceramic tiles to prevent the ceramic tiles from being deviated with the rotation of the second component 200.

Embodiment 5

Embodiments 1 to 4 describe different structures of the third component 300 used for preventing the ceramic tile 20 from being deviated, and also describe different connection methods between the third component 300 and the second component 200 of the second component 200. In embodiments 1 to 4, the second component 200 of the second component 200 needs to rotate to move along the thread of the first component 100. When it is necessary to fix the first component 100, the second component 200 is rotated along the thread of the first component 100 to move towards the ceramic tiles 20. When the second component 200 is separated from the first component 100, it is also necessary to rotate the second component 200 to move away from the ceramic tiles 20. Accordingly, it can be seen that regardless of whether the second component 200 moves towards the ceramic tiles 20 or away from the ceramic tiles 20, it is necessary to rotate the second component 200 along the thread of the supporting portion 120. In practical use, in order to fix the first component 100 between the ceramic tiles, it is necessary to use the second component 200 to rotate along the thread of the supporting portion 120. In addition, the rotation of the second component 200 along the thread of the supporting portion 120 is only to achieve the upward and downward movement of the second component 200, that is, the second component 200 does not play a role of fixing in this part of travel. If the second component 200 can be directly moved along the length direction of the supporting portion 120 at this time instead of rotating the second component 200 along the supporting portion 120 to achieve movement, it will increase the moving speed of the second component 200, thus improving the efficiency.

FIG. 24 shows embodiment 5. In this embodiment, in a case that the second component 200 does not need to be rotated, the second component 200 can directly move along the length direction of the supporting portion 120, and the second component 200 does not need to be rotated to achieve movement. The difference between this embodiment and embodiments 1 to 4 is that the structure on the second component 200 for connecting the thread of the supporting portion 120 is different. That is to say, the structures and connection methods of the third component 300 in embodiments 1 to 4 may be applied to this embodiment.

As shown in FIG. 24, a center of the head 210 of the second component 200 is provided with a cylindrical channel 201. Unlike embodiments 1 to 4, the side wall of the cylindrical channel 201 is not provided with a thread. The inner diameter of the cylindrical channel 201 is larger than the outer diameter of the rod-shaped portion 122 of the first component 100. When the cylindrical channel 201 of the second component 200 receives the rod-shaped portion 122 of the first component 100, the second component 200 can directly move along the length direction of the rod-shaped portion 122, and the second component 200 does not need to be rotated.

A side wall of the head 210 of the second component 200 is provided with a through hole, a rotating member 211 passes through the through hole, and the rotating member 211 is connected to the second component 200 through a pivot shaft 212. The end of the rotating member 211 facing towards the rod-shaped portion 122 of the first component 100 is provided with a tooth 213. The tooth 213 may be engaged with the thread of the rod-shaped portion 122. When the rotating member 211 is in an initial state, the tooth 213 is engaged with the rod-shaped portion 122. At this time, the second component 200 cannot directly move upwards and downwards along the rod-shaped portion 122, and the second component 200 needs to be rotated along the rod-shaped portion 122 to achieve movement. When the rotating member 211 is pressed down, the tooth 213 on it is disengaged from the rod-shaped portion 122. At this time, the second component 200 can directly move along the length direction of the rod-shaped portion 122. Preferably, a reset elastic member (not shown) is provided between the rotating member 211 and the second component 200. The elastic member applies an elastic force to the rotating member 211 to urge the rotating member 211 to reset to the initial state. The elastic member may be a torsion spring sleeved on the pivot shaft 212, or a tension spring, compression spring, elastic sheet, or any other elastic member connected between the rotating member 211 and the second component 200.

Through this embodiment, when the second component 200 needs to rotate, the rotation of the second component 200 can be achieved; when the second component 200 does not need to rotate and the second component 200 needs to be moved, the second component 200 can be quickly moved and the second component 200 does not need to be rotated to achieve moment, thus improving the efficiency.

Embodiment 6

The above five embodiments describe a ceramic tile leveling device 10, in which a third component 300 is arranged below the second component 200. When the second component 200 rotates to move towards the ceramic tiles 20, the third component 300 first contacts the surfaces of the ceramic tiles 20, then the second component 200 is continuously rotated to move towards the ceramic tiles 20, and the third component 300 is fixed on the upper surfaces of the ceramic tiles 20. At this time, the second component 200 is continuously rotated, and the third component 300 no longer rotates with the second component 200, but is fixed on the upper surfaces of the ceramic tiles 20, so that the ceramic tiles 20 can be prevented from rotating with the second component 200, thus preventing the ceramic tiles 20 from moving and being misaligned. In the above embodiments, when the second component 200 is rotated, it is mainly adjusted manually by the user, usually by tightening the second component 200 to the lowest position where it cannot continue to rotate, i.e., a flatness positioning position. However, since the forces applied by each operator are different or the torques applied by the same operator are different, it is easy to cause the rotation tightness of the second component 200 at the lowest position to be not uniform, that is, the flatness positioning position depends on personal feel and cannot be accurately consistent, resulting in the problem of inconsistent height on the entire ceramic tile laying plane, and affecting the laying quality. This embodiment provides a force assisting mechanism 400, which may be detachably connected to the second component 200, so as to quickly adjust the second component 200. In addition, it is provided with a torque overload cutoff structure 440, which can ensure that the torque applied to the second component 200 is always uniform when a certain torque threshold is reached, and the torque applied to the second component 200 will not be different due to the different torques applied by the operator, thus avoiding the situation that the tightness is inconsistent when the second component 200 reaches the lowest position. The force assisting mechanism 400 may be a component of the ceramic tile leveling device 10 or used separately.

As shown in FIG. 25 and FIG. 26, this embodiment provides a ceramic tile leveling device 10, which comprises a first component 100, a second component 200, a third component 300, and a force assisting mechanism 400. The structures of and connection relationships between the first component 100, the second component 200, and the third component 300 may be the same as those in any of the five embodiments described above, or other known ceramic tile leveling devices in the existing technology. Therefore, the structures of and connection relationships between the first component 100, the second component 200, and the third component 300 will not be repeated in this embodiment.

The force assisting mechanism 400 comprises a first transmission block 410, a second transmission block 420, and a connecting component 430, which can work together to achieve efficient and accurate ceramic tile leveling operations.

The first transmission block 410 serves as a power input end and can rotate in response to an external driving force. Referring to FIG. 31 and FIG. 32, the torque can be transmitted between the first transmission block 410 and the second transmission block 420, and a torque overload cutoff structure 440 is provided between the two. The connecting component 430 is connected to the second transmission block 420 and can rotate with the second transmission block 420. At the same time, the connecting component 430 is also connected to the second component 200, transmits the torque transmitted from the second transmission block 420 to the second component 200, and drives the second component 200 to rotate, thus achieving the leveling operation of the ceramic tiles 20. In a normal working state, that is, in a case that the torque is within a light load range (not exceeding the threshold), the rotation of the first transmission block 410 can smoothly drive the second transmission block 420 to rotate synchronously, thus driving the connecting component 430 and the second component 200 to rotate to achieve normal torque transmission. However, in a case that the torque exceeds the preset threshold, that is, in a case that an overload situation occurs, this torque connection mechanism will automatically cut off, that is, the second transmission block 420 will no longer rotate with the first transmission block 410, and the connecting component 430 and the second component 200 will no longer rotate, so as to prevent equipment damages or safety accidents from occurring.

The connecting component 430 serves as a component that connects the second transmission block 420 with the second component 200 and transmits the torque. The connecting component 430 may be connected to different types of second components 200. For example, by arranging corresponding matching mechanisms on the connecting component 430, it can achieve the connection to different types of second components. Taking the second component 200 in embodiment 1 as an example, as shown in FIG. 26, the end of the second component 200 away from the base 110 has a cylindrical head 240. The cross section of the head 240 is in a polygonal shape. Preferably, the polygonal shape is a hexagonal shape. The inside of the connecting component 430 is provided with a first connecting hole 431 that matches the cross-sectional shape of the head 240. The first connecting hole 431 may be fitted outside the head 240, and when the connecting component 430 rotates, it can drive the second component 200 to rotate. It should be understood that the connecting component 430 may also be configured as any other structure that can drive the second component 200 to rotate. For example, a structure that matches the ribs 233 of the second component 200 is provided below the connecting component 430.

There are various connection methods between the connecting component 430 and the second transmission block 420, and any connection method that can enable the second transmission block 420 to transmit the torque to the connecting component 430 may be applied. In some implementations, the connecting component 430 may be integrated with the second transmission block 420 as a whole. In some implementations, as shown in FIG. 28 and FIG. 29, the connecting component 430 may be connected to the second transmission block 420 through a connecting rod 432. One end of the connecting rod 432 is connected to the second transmission block 420, and another end is connected to the connecting component 430. Preferably, as shown in FIG. 30, the second transmission block 420 is provided with a through hole 421, and one end of the connecting rod 432 is inserted into the through hole 421. Preferably, the connecting component 430 is provided with an end portion 433 which is cylindrical, a second connecting hole 434 is provided in the end portion 433, and one end of the connecting rod 432 is inserted into the second connecting hole 434.

The first transmission block 410, as the power input end, is unique in that it can rotate in response to the external driving force. The user may apply the external driving force to the first transmission block 410 through some force applying tools. These force applying tools may be wrenches, pliers, screwdrivers, or other force applying tools that can drive the force assisting mechanism 400 to rotate. These tools may be manual tools, electric tools, or pneumatic tools. In order to connect with these force applying tools, the first transmission block 410 is specially designed with a connecting structure 411 that matches the force applying tools in consideration of the compatibility, so as to ensure stable and efficient power transmission. In some implementations, as shown in FIG. 30, the connecting structure 411 comprises a transmission shaft 412, one end of the transmission shaft 412 is fixedly connected to the first transmission block 410, and another end is connected to a force applying tool. The transmission shaft 412 may be integrated with the first transmission block 410 as a whole, or may be connected to the first transmission block 410 as a separate component. In some implementations, as shown in FIG. 30, the transmission shaft 412 is cylindrical, and one end is provided with an end portion 413 connected to a force applying tool. Preferably, the end portion 413 is in a hexagonal prism shape (or it may be configured to be in other polygonal shapes), so as to be connected to a wrench or socket type tool. At the same time, the first transmission block 410 is provided with a third connecting hole 414 for inserting the transmission shaft 412, and a portion of the transmission shaft 412 is inserted into the third connecting hole 414, thus being fixedly connected to the first transmission block 410. When the user drives the transmission shaft 412 to rotate through the force applying tool, the first transmission block 410 synchronously rotates, thus achieving the effective transmission of the driving force.

The torque overload cutoff structure 440 provided between the first transmission block 410 and the second transmission block 420 can cut off torque transmission when torque overload occurs, so that the torque that promotes the effective rotation of the second component 200 is consistent, and it will cause excessive tightness or looseness due to different operators or applied torques, thus keeping the flatness positioning position of the ceramic tiles 20 consistent. In some implementations, the torque overload cutoff structure 440 adopts a frictional design, where a static frictional force is formed between the first transmission block 410 and the second transmission block 420 through surface contact. When the torque is small, this static frictional force is sufficient to maintain the synchronous rotation between the two; However, when the torque increases to a certain extent, the static frictional force is not sufficient to overcome the torque effect, thus causing slippage between the two and cutting off the torque transmission.

In some embodiments, as shown in FIG. 31, FIG. 32, FIG. 33(a)-33(c), and FIG. 34(a)-34(c), the torque overload cutoff structure 440 comprises at least one first ratchet tooth 441 arranged on the first transmission block 410, and at least one second ratchet tooth 442 arranged on the second transmission block 420. The first ratchet tooth 441 is provided on the end surface 415 of the first transmission block 410 facing towards the second transmission block 420, and the second ratchet tooth 442 is arranged on the end surface 422 of the second transmission block 420 facing towards the first transmission block 410. The first ratchet tooth 441 and the second ratchet tooth 442 are consistent in shape, structure, and distribution position, so as to ensure high synergy during torque transmission. Under normal torque load, the first ratchet tooth 441 and the second ratchet tooth 442 can be engaged with each other, so as to ensure smooth power transmission. In a case that the torque exceeds the preset threshold, the first ratchet tooth 441 and the second ratchet tooth 442 will be automatically disengaged from each other, so as to cut off the transmission of torque. The first ratchet tooth 441 sequentially comprises three characteristic surfaces along the direction of force (such as clockwise as shown in the figures): the first one is a monotonically rising inclined surface 4411, which is used for guiding the smooth engagement between the ratchet teeth during light torque load to transmit the torque; the second one is a flat surface 4412 parallel to the direction of force; the last one is a vertical surface 4413 that descends perpendicular to the direction of force. The structure of the second ratchet tooth 442 is the same as that of the first ratchet tooth 441, which will not be repeated here. As shown in the figures, the first transmission block 410 is positioned above the second transmission block 420 (based on the orientation shown in the figures). In the torque transmission process, the fitting state between the first transmission block 410 and the second transmission block 420 dynamically changes with the magnitude of the torque. When the torque is within the light load range, as shown in FIG. 32, the inclined surface 4411 of the first ratchet tooth 441 closely overlaps with the inclined surface 4421 of the second ratchet tooth 442, thus forming effective engagement to ensure the smooth transmission of torque. However, once the torque exceeds the safety threshold, relative sliding will occur between the inclined surface 4411 of the first ratchet tooth 441 and the inclined surface 4421 of the second ratchet tooth 442, causing the distance between the end surface 415 of the first transmission block 410 and the end surface 422 of the second transmission block 420 to gradually increase until the flat surface 4412 of the first ratchet tooth 441 contacts the flat surface 4422 of the second ratchet tooth 442, at which the engagement relationship is completely lost and the torque transmission is automatically cut off. As the first transmission block 410 continues to rotate, as shown in FIG. 31, the first ratchet tooth 441 and the second ratchet tooth 442 will cross the vertical surfaces 4413 and 4423 and enter the gap between the opposing ratchet teeth again, thus making a preparation for the next engagement. In some implementations, the first transmission block 410 is provided with a plurality of first teeth 441, and the plurality of first teeth 441 are uniformly distributed along the rotation circumference of the first transmission block 410. Similarly, the second transmission block 420 is provided with a plurality of second teeth 442, and the plurality of second teeth 442 are uniformly distributed along the rotation circumference of the second transmission block 420, corresponding to the first teeth 441 of the first transmission block 410. Preferably, the number of the first teeth 441 is three, and the number of the second teeth 442 is three.

In some implementations, referring to FIG. 28, when the second transmission block 420 is connected to the connecting component 430 through the connecting rod 432, the second transmission block 420 may be configured to be slidably connected to the connecting rod 432, an elastic element 443 is provided between the second transmission block 420 and the connecting component 430, and the elastic element 443 can apply an elastic force to the second transmission block 420. Preferably, the elastic element 443 is a spring, one end of the spring is pressed against the second transmission block 420, and another end is pressed against the connecting component 430. When subjected to a downward pressing force, the second transmission block 420 will overcome the elastic force of the elastic element 443 and move towards the connecting component 430 along the connecting rod 432. After the downward pressing force disappears, the second transmission block 420 will rebound upwards and reset (that is, move towards the first transmission block 410) under the elastic force of the elastic element 443, thus achieving the automatic reset function of the mechanism. When the torque exceeds the critical value and the first transmission block 410 rotates, the inclined surface of the first ratchet tooth 441 is fit with the inclined surface of the second ratchet tooth 442, the second transmission block compresses the elastic element 443 to move towards the connecting component 430 along the connecting rod 432, the inclined surface of the first ratchet tooth 441 and the inclined surface of the second ratchet tooth 442 undergo relative movement, and the flat surface of the first ratchet tooth 441 crosses the flat surface of the second ratchet tooth 442. At this time, the second transmission block is reset under the action of the elastic element 443, and the first ratchet tooth 441 and the second ratchet tooth 442 fall into the gap between the opposing teeth again, thus making a better preparation for the next engagement. In this process, the second transmission block can move back and forth along the connecting rod 432, thus achieving the automatic reset function of the mechanism.

The torque overload cutoff structure adopts the design of the first ratchet tooth 441 and the second ratchet tooth 442, which brings two significant advantages. Firstly, through the relative displacement change between the first transmission block 410 and the second transmission block 420, the function of accurately controlling the torque transmission with a specific threshold is achieved. Secondly, the friction coefficient between the inclined surface 4411 of the first ratchet tooth 441 and the inclined surface 4421 of the second ratchet tooth 442, as a key factor affecting the torque threshold, can be flexibly adjusted by adjusting the materials of the first transmission block 410 and the second transmission block 420, as well as the roughness and slope of the inclined surfaces 4411 and 4421, so as to meet the actual needs of different application scenarios.

In some implementations, as shown in FIG. 29 and FIG. 30, the force assisting mechanism 400 further comprises an outer sleeve 450, the outer sleeve 450 is cylindrical, and an opening position at an upper portion thereof is slightly smaller. This design allows a portion of the transmission shaft 412, most of the first transmission block 410, the connecting rod 432, the second transmission block 420, the elastic element 443, and the connecting component 430 to be perfectly covered by the outer sleeve 450. Preferably, an outer side wall of the outer sleeve 450 is designed to be in a regular octagonal prism shape, and an opening in a lower end is also in a regular octagonal prism shape, with the size matching the size of the regular octagonal prism shape of the outer side wall of the connecting component 430, so that the connecting component 430 can fit into the opening in the lower end of the outer sleeve 450. In addition, the opening in the lower end of the outer sleeve 450 is specially provided with a horn-shaped guiding structure, which greatly facilitates the quick insertion of the outer sleeve 450 into the second component 200 of the ceramic tile leveling device. In some implementations, the side wall of the connecting component 430 is symmetrically provided with two blind holes 435, while the corresponding positions of the outer sleeves 450 are provided with two through holes 451. By penetrating a sleeve fixing pin 452 through one blind hole 435 and one through hole 451, the fixation between the outer sleeve 450 and the connecting component 430 can be achieved. In this embodiment, an inner side end of the sleeve fixing pin 452 adopts a smooth rod design and an outer side end adopts a spline design. The spline and the through hole of the outer sleeve 450 adopt an interference fit to ensure the stability of the fixation. It should be understood that other structures that can fix the outer sleeve 450 and the connecting component 430 may also be applied in this embodiment.

In embodiment 6, by adding a force assisting mechanism 400, auxiliary power can be provided to drive the second component 200 to rotate, thus improving the operation efficiency; by using a torque overload cutoff structure 440, a unified mechanical torque can be formed, thus avoiding the situation of inconsistent torque due to individual difference, and ensuring the consistency of the ceramic tile flatness positioning position.

What are described above are specific preferred embodiments of this application. It should be understood that those skilled in the art may make various modifications and changes based on the concept of this application without contributing any inventive labor. Therefore, any technical solution that can be obtained by those skilled in the art based on the concept of this application through logical analysis, reasoning, or limited experiments on the basis of the existing technology should also fall within the scope of protection defined by the claims.