CARD DEALING DEVICE

Description

FIELD OF THE DISCLOSURE

The present disclosure relates to the technical field of card dealing devices, and more particularly to a card dealing device in which a card storage chamber, a card access opening, a card dispensing chute, a card dealing opening, a card dispensing mechanism, and a card dealing mechanism are all integrated within a single housing.

BACKGROUND OF THE DISCLOSURE

With the improvement of living standards, people's daily lives have gradually become more enriched, and poker has become one of the entertainment activities favored by people. However, after completing a round of cards, players need to sort, shuffle, and deal the cards by themselves. In order to save time in dealing cards, automatic card dealing devices have been developed to perform the card dealing process.

On one hand, in existing card dealing devices, the rotation speed of the card dealing wheel is usually faster than the rotation speed of the card dispensing wheel. However, when a poker card is in contact with the card dealing wheel and the card dispensing wheel simultaneously, the card may retard the card dealing wheel, which means that the card dispensing wheel becomes a hindrance instead, which not only increases power loss but also affects the smoothness of card dealing.

In this regard, some card dealing devices introduce a one-way bearing between the card dealing wheel and the card dispensing wheel, so as to cut off the power transmission between the card dealing wheel and the card dispensing wheel when appropriate, thereby ensuring the operational stability of the card dealing wheel and the card dispensing wheel, reducing power loss, and improving the operational efficiency and smoothness of the device.

However, the cost of the one-way bearing is high, which becomes a considerable burden for the mass production of card dealing devices, and thus requires improvement.

On the other hand, in existing card dealing devices, a specific card separating mechanism is usually provided to deal cards one by one. However, such card separating mechanisms often have very complex structures and high costs, which are not practical and also require improvement.

Moreover, in the structure of existing card dealing devices, the card dealing channel and the bottom of the card storage chamber are mostly on the same horizontal plane, cards are directly delivered into the card dealing channel through a bottom delivery structure and pushed out by the card dealing mechanism. However, due to slight deformation, adhesion, and overlapping that occur when cards are stacked, the existing technology lacks effective limiting and separating structures, often resulting in multiple cards being dispensed at once, thereby reducing card dealing accuracy and seriously affecting user experience and game fairness.

SUMMARY OF THE DISCLOSURE

The present disclosure, on one hand, provides a card dealing device that has advantages of reducing power loss, improving operational efficiency and smoothness of the card dealing device, and lowering cost.

In another aspect, the present disclosure provides a card dealing device that offers enhanced card-separating performance with a simple structure and low cost.

In yet another aspect, the present disclosure provides a card dealing device that can effectively limit the dispensing of one single card at a time and provides accurate card dealing.

According to one aspect of the present disclosure, a card dealing device is provided, comprising: a housing having a card storage chamber for accommodating cards, a card access opening located at a top side and/or a rear side and/or a left side or a right side of the card storage chamber, a card dispensing chute located at a front side of the card storage chamber, and a card dealing opening located at a front side of the housing and corresponding to the card dispensing chute; a card dispensing mechanism disposed at a bottom or a top of the card storage chamber, and configured to dispense cards inside the card storage chamber to the card dispensing chute; and a card dealing mechanism disposed between the card dispensing chute and the card dealing opening, and configured to deal cards passing therethrough from the card dealing opening; wherein the card dealing mechanism comprises a card dealing member configured to drive a driving member of the card dealing member to rotate, and a card dealing gear disposed at one end of the card dealing member and rotating with the card dealing member; the card dispensing mechanism comprises a card dispensing member and a card dispensing gear disposed at one end of the card dispensing member, and a rotation speed of the card dispensing member is lower than a rotation speed of the card dealing member; a gear assembly is disposed between the card dealing gear and the card dispensing gear for transmitting or cutting off power, at least one gear in the gear assembly is floatable to disengage from the gear assembly, so as to cut off power transmission; the driving member drives the card dealing member to rotate, the card dealing gear drives the card dispensing gear via the gear assembly to drive the card dispensing member to rotate and deliver cards located in the card storage chamber; when a card simultaneously contacts the card dispensing member and the card dealing member, a movement speed of the card increases under driving of the card dealing member, and a rear edge of the card applies a force to the card dispensing member to cause an increase in the rotation speed of the card dispensing member and the card dispensing gear, and at this time, at least one gear in the gear assembly floats and disengages from the gear assembly so as to cut off the power transmission.

By adopting the above technical solution, the present disclosure provides beneficial effects as follows: In the present disclosure, by disposing a gear assembly between the card dealing gear and the card dispensing gear, and configuring at least one gear in the gear assembly to be capable of floating, and by having the rotation speed of the card dispensing member lower than the rotation speed of the card dealing member, when a card simultaneously contacts the card dispensing member and the card dealing member, the movement speed of the card increases under the driving of the card dealing member, and a rear edge of the card applies a force on the card dispensing member to cause an increase in the rotation speed of the card dispensing member and the card dispensing gear; at this moment, at least one gear in the gear assembly floats and disengages from the gear assembly, thereby cutting off the power transmission between the card dealing gear and the card dispensing gear. The floating gear scheme is cleverly adopted to ensure the operational stability of both the card dealing member and the card dispensing member, and to enable the card dispensing member to maintain a certain rotation speed even without power input, thereby reducing power loss and improving the operational efficiency and smoothness of the card dealing device. Compared to adopt a one-way bearing, the cost is significantly reduced.

According to another aspect of the present disclosure, a card dealing device is provided, comprising: a housing having a card storage chamber for accommodating cards, a card access opening located at a top side and/or a rear side and/or a left side or a right side of the card storage chamber, a card dispensing chute located at a front side of the card storage chamber, a card dealing opening located at a front side of the housing and corresponding to the card dispensing chute, and a card dealing channel located between the card dispensing chute and the card dealing opening; a card dispensing mechanism disposed at a bottom or a top of the card storage chamber, and configured to dispense cards inside the card storage chamber to the card dispensing chute; and a card dealing mechanism disposed between the card dispensing chute and the card dealing opening, and configured to deal cards passing therethrough from the card dealing opening; wherein a card separating ramp that protrudes forward is disposed on a bottom surface of the card dispensing chute; and when a card enters the card dispensing chute, the card contacts the card separating ramp for card separation, and slides into the card dealing mechanism along the card separating ramp.

By adopting the above technical solution, the beneficial effects are as follows: By providing a card separating ramp that protrudes toward at the front side on the bottom surface of the card dispensing chute, when cards enter the card dispensing chute, front ends of the cards contact the card separating ramp to be separated, and then slide into the card dealing mechanism along the card separating ramp. The card separating ramp is used for card separation, which is simpler and more practical compared to other card separation structures, and also has a lower cost.

According to still another aspect of the present disclosure, a card dealing device is provided, comprising: a housing having a card storage chamber for accommodating cards, a card access opening located at one side of the card storage chamber and in communication with the card storage chamber, a card dispensing chute located at a front side of the card storage chamber, a card dealing opening located at a front side of the housing, and a card dealing channel located between the card dispensing chute and the card dealing opening; a card dispensing mechanism disposed at a bottom or a top of the card storage chamber, and configured to dispense cards to the card dispensing chute; and a card dealing mechanism disposed inside the card dealing channel, and configured to deal cards from the card dealing opening; wherein a lower bottom surface of the card dealing channel comprises a card separating ramp and a gently sloped card guiding surface; the card separating ramp protrudes upward from the card dispensing chute toward the card dealing opening for guiding card separation; the gently sloped card guiding surface is located between the card separating ramp and the card dealing opening, and an inclination angle of the gently sloped card guiding surface gradually decreases in a direction toward the card dealing opening; and a card limiting assembly is disposed above the card separating ramp and forms a predetermined gap with the card separating ramp therebetween, and configured to limit a number of cards passing through the predetermined gap to be one card by squeezing and gap fitting.

By adopting the above technical solution, the beneficial effects are as follows: By arranging the card separating ramp that protrudes upward from the card dispensing chute toward the card dealing opening on the lower bottom surface of the card dealing channel, cards dispensed by the card dispensing mechanism can automatically become staggered during forward movement, which helps reduce overlapping caused by adhesion or friction between the cards. The gently sloped card guiding surface is located between the card separating ramp and the card dealing opening, and the inclination angle of the gently sloped card guiding surface gradually decreases in a direction toward the card dealing opening, so as to allow the cards to smoothly transition and be directionally guided before entering the card dealing opening, thereby improving the fluency and accuracy of card dealing. In addition, the card limiting assembly disposed above the card separating ramp forms a predetermined gap with the card separating ramp therebetween, such that the pressing and gap coordination can effectively prevent two or more overlapping cards from entering the card dealing mechanism simultaneously, and only one card is allowed to pass through smoothly, thereby improving card dealing precision.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments or the prior art of the present disclosure, brief introductions of the drawings required in the description of the embodiments or the prior art are provided below. It is evident that the drawings described below are merely some embodiments of the present disclosure, and other drawings may also be obtained by those skilled in the art without any inventive effort based on these drawings.

FIG. 1 is a schematic structural view of a card dealing device according to a first embodiment from one perspective;

FIG. 2 is a schematic structural view of the card dealing device according to the first embodiment from another perspective;

FIG. 3 is a schematic structural view of the card dealing device according to the first embodiment from yet another perspective;

FIG. 4 is a sectional view taken along section A-A of FIG. 3;

FIG. 5 is an enlarged view of portion A in FIG. 4;

FIG. 6 is an enlarged view of portion B in FIG. 4;

FIG. 7 is a schematic structural view of the card dealing device according to the first embodiment with a part of the housing hidden;

FIG. 8 is a schematic structural view of the card dispensing mechanism, the card dealing mechanism, and the gear assembly;

FIG. 9 is a schematic structural view of the card dealing device according to the first embodiment with a part of the housing hidden;

FIG. 10 is an enlarged view of portion C in FIG. 9;

FIG. 11 is another schematic structural view of the card dealing device according to the first embodiment with a part of the housing hidden;

FIG. 12 is a schematic structural view of the card supporting plate and the resilient card supporting member;

FIG. 13 is a schematic structural view inside a rotating base;

FIG. 14 is a schematic structural view of a card dealing device according to a second embodiment from one perspective;

FIG. 15 is a schematic structural view of the card dealing device according to the second embodiment from another perspective;

FIG. 16 is a schematic structural view of the card dealing device according to the second embodiment from yet another perspective;

FIG. 17 is a sectional view taken along section A-A of FIG. 16;

FIG. 18 is an enlarged view of portion A in FIG. 17;

FIG. 19 is an enlarged view of portion B in FIG. 17;

FIG. 20 is a schematic structural view of the card dealing device according to the second embodiment with a part of the housing hidden;

FIG. 21 is a schematic structural view of the card dispensing mechanism and the card dealing mechanism;

FIG. 22 is a schematic structural view of the card supporting plate and the resilient card supporting member;

FIG. 23 is a schematic structural view of the card dealing device according to a third embodiment from one perspective;

FIG. 24 is a schematic structural view of the card dealing device according to the third embodiment from another perspective;

FIG. 25 is a top view of the structure of the card dealing device according to the third embodiment;

FIG. 26 is a schematic view of the sectional view taken along line A-A in FIG. 25 rotated by 90°;

FIG. 27 is a partially enlarged view of portion B in FIG. 26;

FIG. 28 is a schematic structural view of the housing according to the third embodiment with an upper cover hidden;

FIG. 29 is an exploded schematic view of a part of the housing according to the third embodiment;

FIG. 30 is an exploded schematic view of another part of the housing according to the third embodiment;

FIG. 31 is a schematic view of the housing according to the third embodiment with a partial hidden structure;

FIG. 32 is a schematic structural view of the assembly of the card supporting plate, the sliding rod, and the compression spring according to the third embodiment;

FIG. 33 is a schematic structural view of the card dispensing mechanism, the card dealing mechanism, and the card limiting assembly according to the third embodiment;

FIG. 34 is an exploded schematic view of part of the housing, the base, and the rotating mechanism according to the third embodiment;

FIG. 35 is another exploded schematic view of part of the housing, the base, and the rotating mechanism according to the third embodiment from another perspective; and

FIG. 36 is a top view of the structure of the central gear disk according to the third embodiment.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure is further described in detail below in conjunction with the drawings.

The present exemplary embodiment merely serves to interpret the present disclosure and shall not be construed as limiting the present disclosure. Those skilled in the art may, upon reading the present specification, make modifications to the present embodiment that do not contribute to inventive effort, and all such modifications shall fall within the scope of protection defined by the claims of the present disclosure and be protected under the patent law.

For convenience of understanding and description, hereinafter, the direction in which the cards are dealt by the card dealing device is defined as the front direction, and the direction in which the cards are issued is defined as the front.

First Embodiment

Referring to FIGS. 1 to 4, the card dealing device according to the first embodiment includes a housing 100, a card dispensing mechanism 200, and a card dealing mechanism 300.

Referring to FIGS. 1 to 6, the housing 100 includes a card storage chamber 110 configured to accommodate cards, a card access opening 120 located at a top side and/or a rear side and/or left and right sides of the card storage chamber 110, a card dispensing chute 130 located at a front side of the card storage chamber 110, and a card dealing opening 140 located at a front side of the housing 100 and corresponding to the card dispensing chute 130. The card dispensing mechanism 200 is disposed at a bottom or a top portion of the card storage chamber 110 and is configured to dispense cards in the card storage chamber 110 to the card dispensing chute 130. The card dealing mechanism 300 is disposed between the card dispensing chute 130 and the card dealing opening 140 and is configured to deal cards passing through the outside via the card dealing opening 140.

Specifically, in the present embodiment, referring to FIGS. 1 to 6, the card dealing device is a top-dealing card device. The card dispensing chute 130 is located at an upper front portion of the card storage chamber 110, and the card access opening 120 is located at the top side and the rear side of the card storage chamber 110. The top-dealing card device further includes: a card supporting plate 410 disposed within the card storage chamber 110 and configured to support cards, and a resilient card supporting member 420 disposed between the card supporting plate 410 and the bottom portion of the card storage chamber 110. The card dispensing mechanism 200 is disposed above the card supporting plate 410. A stack of cards is accommodated in the card storage chamber 110 and supported by the card supporting plate 410 below the card dispensing mechanism 200. During the dealing process, the card dispensing mechanism 200 rolls the topmost card into the subsequent card dealing mechanism 300 for dealing. In some embodiments, the card access opening 120 may also be disposed on the left side or the right side.

In other embodiments (not shown), the card dealing device may be a bottom-dealing card device, in which the card dispensing chute is located at a lower front portion of the card storage chamber. The card dispensing mechanism is disposed above the card storage chamber. A stack of cards is accommodated in the card storage chamber and presses against the upper side of the card dispensing mechanism. During the dealing process, the card dispensing mechanism rolls the lowermost card into the subsequent card dealing mechanism for dealing.

In the following embodiments, the top-dealing card device is taken as an example. However, unless specifically stated otherwise, the description shall also apply to the bottom-dealing card device.

In some embodiments, referring to FIGS. 5 to 8, the card dealing mechanism 300 includes: a card dealing member 310, a driving member 320 configured to drive the card dealing member 310 to rotate, and a card dealing gear 330 disposed at one end of the card dealing member 310 and configured to rotate together with the card dealing member 310. The card dispensing mechanism 200 includes: a card dispensing member 210 and a card dispensing gear 220 disposed at one end of the card dispensing member 210. The rotational speed of the card dispensing member 210 is lower than the rotational speed of the card dealing member 310. A distance between the card dispensing member 210 and the card dealing member 310 is less than a length of a single card, such that the card can pass more smoothly through the card dispensing member 210 and the card dealing member 310.

Referring to FIGS. 7 to 10, a gear assembly 500 configured to transmit and cut off power is disposed between the card dealing gear 330 and the card dispensing gear 220. Within the gear assembly 500, at least one gear is capable of floating to disengage from the gear assembly 500, thereby cutting off power transmission between the card dealing gear 330 and the card dispensing gear 220.

The driving member 320 drives the card dealing member 310 to rotate, and the card dealing gear 330 drives the card dispensing gear 220 via the gear assembly 500, further driving the card dispensing member 210 to rotate so as to deliver the cards in the card storage chamber 110. When a card simultaneously contacts the card dispensing member 210 and the card dealing member 310, the card moves at an increased speed under the drive of the card dealing member 310. A trailing edge of the card exerts a force on the card dispensing member 210 to increase the rotational speed of the card dispensing member 210 and the card dispensing gear 220. At this time, at least one gear in the gear assembly 500 floats and disengages from the gear assembly 500, thereby cutting off power transmission between the card dealing gear 330 and the card dispensing gear 220. This floating gear scheme is cleverly adopted to ensure the operational stability of both the card dealing member 310 and the card dispensing member 210, allows the card dispensing member 210 to maintain a considerable rotational speed even without power input, reduces power loss, improves operational efficiency and smoothness, and significantly lowers cost compared with the use of a one-way bearing.

Specifically, referring to FIGS. 7 to 10, the gear assembly 500 includes: a first gear 510 disposed between the card dealing gear 330 and the card dispensing gear 220, wherein a shaft center of the first gear 510 is located at a lower side of a shaft center of the card dealing gear 330; and a second gear 520 disposed between the first gear 510 and the card dispensing gear 220, wherein a shaft center of the second gear 520 is located at an upper side of a shaft center of the first gear 510, and the second gear 520 is configured to float. When a card simultaneously contacts the card dispensing member 210 and the card dealing member 310, the second gear 520 floats upward and disengages from the first gear 510, thereby cutting off power transmission. When the card passes the card dispensing member 210, the second gear 520 returns to its original position under gravitational force. In other embodiments, the gear assembly 500 may also be provided with other types of multiple gears, such as three or more gears, or two gears, wherein a floating movement is performed in a downward direction to disengage the power transmission. As long as the floating of the gear is configured to achieve power cutoff, the configuration shall be applicable.

In order to prevent the second gear 520 from deviating from a predetermined position during floating and resetting, referring to FIGS. 7 to 10, the second gear 520 is mounted on the housing 100 via a rotating shaft 521. The housing 100 is provided with a stroke hole 150 configured to allow the rotating shaft 521 to float. Due to the limitation of the stroke hole 150, the motion trajectory of the second gear 520 remains unchanged, thereby improving the stability of the gear assembly 500.

In some embodiments, referring to FIGS. 6 and 11, in order to prevent multiple cards from simultaneously passing through the card dealing mechanism 300 and causing card dealing errors, a card separating ramp 160 is provided on a bottom surface of the card dispensing chute 130, and the card separating ramp 160 protrudes upward toward the front side. Accordingly, when the card enters the card dispensing chute 130, a front end of the card contacts the card separating ramp 160, thereby performing card separation and sliding into the card dealing mechanism 300 along the card separating ramp 160. The use of the card separating ramp 160 for card separation, compared to other separating structures, is simpler, more practical, and lower in cost.

An included angle between the card separating ramp 160 and a bottom surface of the card storage chamber 110 ranges from 115° to 166°. Specifically, in the present embodiment, the included angle between the card separating ramp 160 and the bottom surface of the card storage chamber 110 is 146.8°. In other embodiments, the included angle between the card separating ramp 160 and the bottom surface of the card storage chamber 110 may also be 115°, 120°, 125°, 130°, 135°, 140°, 145°, 150°, 155°, 160°, 166°, and so on. Specifically, when the top-dealing card device is adopted, the included angle between the card separating ramp 160 and the bottom surface of the card storage chamber 110 is converted to an included angle between the card separating ramp 160 and the card supporting plate 410.

On the basis of a first card separation performed by the card separating ramp 160, referring to FIGS. 6 and 11, a roller 600 is further disposed between the card separating ramp 160 and the card dealing mechanism 300. The roller 600 is mounted inside the housing 100. An upper end surface of the roller 600 is higher than a bottom surface between the card separating ramp 160 and the card dealing mechanism 300 by 0.05 cm to 0.4 cm. Accordingly, when the card passes the roller 600, a front end of the card contacts the roller 600, thereby performing secondary card separation and sliding the card into the card dealing mechanism 300 along the roller 600. The provision of the roller 600 between the card separating ramp 160 and the card dealing mechanism 300 not only enables secondary card separation and improves the separation effect, but also effectively reduces wear of the card on the bottom surface between the card dispensing chute 130 and the card dealing mechanism 300. The housing 100 of the card dealing device is generally formed of a plastic material, whereas the roller 600 is generally made of a more wear-resistant material, such as carbon structural steel. When the card passes the roller 600, the card is lifted by the roller 600, thereby significantly reducing friction between the card and the housing 100. In other embodiments, an upper end surface of the roller 600 is 0.2 cm higher than the bottom surface between the card separating ramp 160 and the card dealing mechanism 300. In other embodiments, the upper end surface of the roller 600 may also be higher than the bottom surface between the card separating ramp 160 and the card dealing mechanism 300 by 0.05 cm, 0.08 cm, 0.1 cm, 0.15 cm, 0.23 cm, 0.25 cm, 0.3 cm, 0.35 cm, 0.4 cm, and so on.

In order to prevent the roller 600 from protruding excessively and to facilitate better installation of the roller 600, referring to FIG. 6, an arc-shaped groove 170 is further disposed between the card separating ramp 160 and the card dealing mechanism 300. The roller 600 is disposed in the arc-shaped groove 170, and an upper end surface of the roller 600 protrudes from the arc-shaped groove 170.

An alternative feasible solution is to omit the card separating ramp 160 and only dispose the roller 600 between the card dispensing chute 130 and the card dealing mechanism 300. Such configuration is also capable of achieving a card separation effect and reducing wear on the housing 100. An upper end surface of the roller 600 is higher than a bottom surface between the card dispensing chute 130 and the card dealing mechanism 300 by 0.05 cm to 0.4 cm.

In some embodiments, referring to FIGS. 8 and 11, when the top-dealing card device configuration is adopted, the card dispensing member 210 includes: a first card dispensing shaft 211, a first card dispensing roller 212, a second card dispensing shaft 213, a second card dispensing roller 214, and a card dispensing transmission assembly 215. The first card dispensing shaft 211 is fixedly connected to the card dispensing gear 220. The first card dispensing roller 212 is fixed to the first card dispensing shaft 211. The second card dispensing shaft 213 is parallel to the first card dispensing shaft 211. The second card dispensing roller 214 is fixed to the second card dispensing shaft 213. The card dispensing transmission assembly 215 is disposed between the first card dispensing shaft 211 and the second card dispensing shaft 213 and configured to transmit rotation from the first card dispensing shaft 211 to the second card dispensing shaft 213.

The first card dispensing shaft 211 and the second card dispensing shaft 213 are parallel to each other, and a plane on which the first card dispensing shaft 211 and the second card dispensing shaft 213 are located is parallel to a plane on which the card supporting plate 410 is located, such that when cards on the card supporting plate 410 are pressed upward under an elastic force of the resilient card supporting member 420, the cards can stably contact the first card dispensing roller 212 and the second card dispensing roller 214 simultaneously, thereby achieving a good card dispensing effect.

Specifically, the first card dispensing roller 212 and the second card dispensing roller 214 are staggered in the left-right direction such that the first card dispensing roller 212 and the second card dispensing roller 214 act on portions of the card in the left-right width direction, respectively. In the case of bent cards, contact can still be made to drive the cards for dispensing, thereby achieving a good card dispensing effect and avoiding card jamming which may affect the smoothness of card dealing, thereby improving user experience. In the present embodiment, the second card dispensing roller 214 is disposed in the middle of a rear side of the card dispensing chute 130, so that in the case of bent cards, a central portion of the cards can also be contacted to achieve a good card dispensing effect. Two first card dispensing rollers 212 are provided and disposed on the left and right sides of the second card dispensing roller 214 to contact left and right sides of the cards and perform frictional card dealing, such that the card dealing in the left-right direction is force-balanced, thereby avoiding imbalance-induced jamming or card damage and improving user experience.

In the present embodiment, the driving member 320 of the card dealing mechanism 300 drives the card dealing member 310 and the two card dispensing rollers, thereby eliminating the need for an additional motor and effectively reducing cost and saving space.

In some embodiments, referring to FIG. 2, a card pressing rib 411 is extended along a front-rear direction on the card supporting plate 410. Two card pressing ribs 411 are provided and symmetrically disposed on left and right sides of the card supporting plate 410, such that playing cards on the card supporting plate 410 better contact the card dispensing mechanism 200 to achieve a good card dispensing effect.

In some embodiments, referring to FIGS. 4, 7, 11, and FIG. 12, two sliding grooves 180 are extended in an up-down direction respectively on the left sidewall and the right sidewall of the card storage chamber 110. A sliding rod 430 is disposed in each sliding groove 180. A sliding member 412 is extended from the card supporting plate 410 toward the sliding groove 180 and sleeved on the sliding rod 430, such that the card supporting plate 410 is capable of sliding up and down smoothly inside the card storage chamber 110. The resilient card supporting member 420 is a spring and sleeved on the sliding rod 430, and disposed between the sliding member 412 and a bottom of the sliding groove 180. The configuration of four sliding grooves 180 and four sliding rods 430 ensures stable vertical movement of the card supporting plate 410.

In some embodiments, referring to FIGS. 5, 7, and FIG. 8, the driving member 320 of the card dealing mechanism 300 is a motor. The card dealing member 310 includes: a card dealing shaft 311, a card dealing wheel 312, a card dealing transmission assembly 313, and a resilient card pressing assembly 314. The card dealing shaft 311 is fixedly connected to the card dealing gear 330. The card dealing wheel 312 is fixed on the card dealing shaft 311. The card dealing transmission assembly 313 is configured to transmit power of the motor to the card dealing shaft 311. The resilient card pressing assembly 314 is disposed above the card dealing wheel 312. The resilient card pressing assembly 314 presses the card onto the card dealing wheel 312, such that the card dealing wheel 312 makes good contact with the card and accelerates the card for output, thereby achieving a good card dealing effect.

In some embodiments, referring to FIG. 1, a rotating base 700 is further included. The rotating base 700 is disposed at a bottom of the housing 100. The rotating base 700 is configured to rotate relative to the housing 100, such that the card dealing device is capable of dealing cards in different directions.

Specifically, referring to FIG. 13, a rotating motor 710 having an output shaft extending out of a bottom surface of the housing 100 is disposed inside the housing 100. A first rotating disk 720 that is in power connection with the output shaft of the rotating motor 710 is disposed inside the rotating base 700. A second rotating disk 730 is further disposed and fixed at a center inside the rotating base 700 and meshed with the first rotating disk 720. A bearing is disposed between an axis of the second rotating disk 730 and a lower side of the rotating base 700. When placed on a tabletop for use, the second rotating disk 730 and the rotating base 700 remain stationary. Driven by the rotating motor 710, the first rotating disk 720 rotates on its own axis and revolves around the second rotating disk 730, thereby driving the housing 100 to rotate relative to the rotating base 700 to achieve rotary card dealing.

In addition, a plurality of shielding plates 721 spaced apart from each other are disposed on a peripheral side of the first rotating disk 720. A sensor 740 configured to sense the shielding plates 721 or a gap between the plurality of shielding plates 721 is fixedly disposed on the bottom surface of the housing 100. The positions of the plurality of shielding plates 721 are staggered relative to the second rotating disk 730 so as to avoid interference. The sensor 740 cooperates with the plurality of shielding plates 721 to position a card dealing direction of the housing 100. Specifically, in the present embodiment, six shielding plates 721 are provided and evenly distributed on the peripheral side of the first rotating disk 720. In other embodiments, a different number of shielding plates 721 may also be provided. In the present embodiment, the sensor 740 is a photoelectric sensor.

In the present embodiment, the plurality of shielding plates 721 are integrally formed with the first rotating disk 720. Certainly, in other embodiments, the shielding plates 721 may also be assembled to the peripheral side of the first rotating disk 720.

In the above embodiments, the card may be a playing card, or may be a card or paper sheet. That is, the card dealing device may be a poker dealing machine or may alternatively be understood as a card dispenser, paper dispensing machine, and the like.

Second Embodiment

Referring to FIG. 14 to FIG. 17, a card dealing device of a second embodiment includes: a housing 100, a card dispensing mechanism 200, and a card dealing mechanism 300.

Specifically, referring to FIG. 14 to FIG. 19, the housing 100 includes a card storage chamber 110 configured to accommodate a plurality of cards; a card access opening 120 provided on a top side and/or a rear side and/or left and right sides of the card storage chamber 110; a card dispensing chute 130 provided on a front side of the card storage chamber 110; a card dealing opening 140 provided on a front side of the housing 100 and corresponding to the card dispensing chute 130; and a card dealing channel 150 disposed between the card dispensing chute 130 and the card dealing opening 140. The card dispensing mechanism 200 is disposed at a bottom or a top of the card storage chamber 110 and configured to dispense the cards in the card storage chamber 110 to the card dispensing chute 130. The card dealing mechanism 300 is disposed between the card dispensing chute 130 and the card dealing opening 140 and configured to deal the cards passing therethrough from the card dealing opening 140.

In some embodiments, referring to FIG. 19 and FIG. 20, in order to prevent a plurality of cards from simultaneously passing through the card dealing mechanism 300 and causing dealing errors, a card separating ramp 160 protruding toward a front side is provided on a bottom surface of the card dispensing chute 130. When the cards enter the card dispensing chute 130, a front end of a card contacts the card separating ramp 160 to perform card separation, and slides into the card dealing mechanism 300 along the card separating ramp 160. Compared to other card separating structures, use of the card separating ramp 160 for card separation is simpler and more practical, and has lower cost.

An included angle between the card separating ramp 160 and a bottom surface of the card storage chamber 110 ranges from 115° to 166°. The included angle may further range from 130° to 156°, or from 140° to 150°. Specifically, in the present embodiment, the included angle between the card separating ramp 160 and the bottom surface of the card storage chamber 110 is 146.8°. In other embodiments, the included angle between the card separating ramp 160 and the bottom surface of the card storage chamber 110 may also be 115°, 120°, 125°, 130°, 135°, 140°, 145°, 150°, 155°, 160°, 166°, etc.

In the present embodiment, referring to FIG. 14 to FIG. 19, the card dealing device is a top-dealing card device, the card dispensing chute 130 is located at an upper front side of the card storage chamber 110, and the card access opening 120 is located at a top side and a rear side of the card storage chamber 110. The top-dealing card device further includes: a card supporting plate 410 disposed inside the card storage chamber 110 and configured to support the cards; and a resilient card supporting member 420 disposed between the card supporting plate 410 and a bottom of the card storage chamber 110. The card dispensing mechanism 200 is disposed above the card supporting plate 410. A stack of cards is accommodated inside the card storage chamber 110 and is supported by the card supporting plate 410 to be positioned below the card dispensing mechanism 200. During card dealing, the card dispensing mechanism 200 pulls an uppermost card into the subsequent card dealing mechanism 300 for dealing. In some embodiments, the card access opening 120 may also be provided on a left side or a right side. Specifically, when adopting the top-dealing card device configuration, the included angle between the card separating ramp 160 and the bottom surface of the card storage chamber 110 is converted to an included angle between the card separating ramp 160 and the card supporting plate 410.

In some embodiments, referring to FIG. 17, FIG. 20, and FIG. 22, two sliding grooves 170 are respectively extended vertically on the left sidewall and the right sidewall of the card storage chamber 110. A sliding rod 430 is disposed in each sliding groove 170. A sliding member 411 is extended from the card supporting plate 410 toward the side of the sliding groove 170, and the sliding member 411 is sleeved on the corresponding sliding rod 430, such that the card supporting plate 410 can smoothly slide up and down within the card storage chamber 110. The resilient card supporting member 420 is configured as a spring, sleeved on the sliding rod 430, and disposed between the sliding member 411 and a bottom portion of the sliding groove 170. The provision of four sliding grooves 170 and four sliding rods 430 ensures the stability of the vertical movement of the card supporting plate 410.

In some embodiments, referring to FIG. 15, a notch 412 is provided at a middle portion of a rear side of the card supporting plate 410. The provision of the notch 412 facilitates users in retrieving and placing cards.

In other embodiments (not shown), the card dealing device may also be configured as a bottom-dealing card device, in which a card dispensing chute is provided at a lower front side of the card storage chamber. The card dispensing mechanism is disposed above the card storage chamber. A stack of cards is accommodated in the card storage chamber and pressed against an upper side of the card dispensing mechanism. During card dealing, the card dispensing mechanism pulls a lowermost card into a subsequent card dealing mechanism for dealing.

In some embodiments, referring to FIG. 17 to FIG. 18, and FIG. 20 to FIG. 21, the card dealing mechanism 300 includes: a card dealing member 310, a resilient card pressing assembly 320, a driving member 330, and a card dealing transmission component 340. The card dealing member 310 is disposed inside the housing 100 and located below the card dealing channel 150. The resilient card pressing assembly 320 is disposed inside the housing 100 and located at an upper side of the card dealing channel 150 and corresponding to the card dealing member 310. The driving member 330 is disposed inside the housing 100. The card dealing transmission component 340 is disposed between the card dealing member 310 and the driving member 330. The vertically floating resilient card pressing assembly 320 is capable of compensating for variations in thickness and surface condition of the cards, thereby achieving a smooth and constant card dealing.

The resilient card pressing assembly 320 includes: a card pressing shaft 321 mounted inside the housing 100 and capable of floating vertically; two torsion springs 322 respectively sleeved on both ends of the card pressing shaft 321, with torsion legs abutting an upper interior side of the housing 100; and a card pressing wheel 323 movably sleeved on the card pressing shaft 321. The card pressing wheel 323 is rotatable relative to the card pressing shaft 321, which increases friction between the cards and the card dealing member 310 without increasing the resistance during card dealing. The vertically floating card pressing shaft 321 is capable of compensating for variations in thickness and surface condition of the cards, thereby achieving smooth and constant card output. Compared to ordinary springs, the torsion springs 322 are more elastic and do not require a dedicated spring chamber.

The driving member 330 is a motor. The card dealing member 310 includes: a card dealing shaft 311 mounted inside the housing 100, and a card dealing wheel 312 fixedly sleeved on the card dealing shaft 311. The card dealing transmission component 340 includes: a worm 341 mounted on an output shaft of the motor, and a worm gear 342 fixedly sleeved on one end of the card dealing shaft 311 and meshing with the worm 341.

In some embodiments, referring to FIG. 14, a rotating base 500 is further included. The rotating base 500 is disposed at a bottom of the housing 100 and is rotatable relative to the housing 100, such that the card dealing device can deal cards in different directions.

In the above embodiments, the card may be a playing card, a ticket, a sheet of paper, or the like. In other words, the card dealing device may function as a poker shuffler, a card issuing device, or a paper feeding device, etc.

Third Embodiment

Please refer to FIGS. 23 to 36. A card dealing device 100 according to a third embodiment includes: a housing 1, a card dispensing mechanism 3, a card dealing mechanism 4, and a card limiting assembly 5.

Referring to FIGS. 23, 24, and FIG. 27, in the present embodiment, the housing 1 includes a card storage chamber a configured to accommodate a stack of cards. A card access opening b is provided at a top side and a rear side of the card storage chamber a and is in communication with the card storage chamber a. A card dispensing chute c is provided at a front side of the card storage chamber a. A card dealing opening d is provided at a front side of the housing 1. A card dealing channel is provided between the card dispensing chute c and the card dealing opening d.

Specifically, the card access opening b may also function as a card retrieval chute. That is, in the event of card jamming or other abnormal conditions, cards located in the card storage chamber a may be retrieved from the card access opening b. Certainly, in other embodiments, the card access opening b may be disposed only at one of the top side, the rear side, or the two lateral sides. No particular limitation is imposed herein.

Referring to FIGS. 27 and 31, in the present embodiment, the card dispensing chute c is located at an upper front side of the card storage chamber a. The card dispensing mechanism 3 is disposed at a top portion of the card storage chamber a and is configured to dispense cards within the card storage chamber a to the card dispensing chute c. In the present embodiment, a card supporting plate 21 is disposed within the card storage chamber a and slants downwardly from the card access opening b toward the card dispensing chute c. The card supporting plate 21 is vertically movable within the card storage chamber a and is configured to support cards. A resilient card supporting member is disposed between the card supporting plate 21 and a bottom portion of the card storage chamber a, and provides an upward elastic support force to the card supporting plate 21. The resilient card supporting member is configured to provide upward elastic support such that top edges of the cards are maintained in close proximity to the card dispensing mechanism 3 to ensure continuous card dispensing. The card dispensing mechanism 3 is disposed above the card supporting plate 21 and is configured to dispense an uppermost card in the card storage chamber a to the card dispensing chute c. It is understood that the card dealing device 100 in the present embodiment, which is capable of dealing multiple stacked cards, is classified as a top-dealing card device.

Certainly, in other embodiments, the card dealing device 100 capable of dealing multiple stacked cards may also be configured as a bottom-dealing card device, wherein the card dispensing chute c is disposed at a lower front side of the card storage chamber a. The card dispensing mechanism 3 is disposed on a bottom surface of the card storage chamber a. A stack of cards is accommodated within the card storage chamber a and pressed against an upper side of the card dispensing mechanism 3. During card dealing, the card dispensing mechanism 3 pulls a lowermost card into the subsequent card dealing mechanism 4 for dealing. No particular limitation is imposed herein.

The card dealing mechanism 4 is disposed within the card dealing channel and is configured to dispense cards from the card dealing opening d. It is understood that the card dealing mechanism 4 deals a card that has been dispensed into the card dealing channel by the card dispensing mechanism 3 out of the card dealing opening d.

A lower bottom surface of the card dealing channel includes a card separating ramp m1 and a gently sloped card guiding surface m2.

The card separating ramp m1 is provided to slope upwardly from the card dispensing chute c toward the card dealing opening d and is configured to guide separation of cards. It is understood that the upward slope formed by the card separating ramp m1 causes multiple stacked cards moving along the channel to automatically displace relative to one another. Cards located on top continue to move forward, thereby reducing overlap caused by adhesion or friction, facilitating subsequent separation.

The gently sloped card guiding surface m2 is located between the card separating ramp m1 and the card dealing opening d, and an inclination angle of the gently sloped card guiding surface m2 gradually decreases in a direction toward the card dealing opening d. In this manner, cards achieve a smooth transition and directional guiding prior to entering the card dealing opening d, thereby improving fluency and accuracy of card dealing.

The card limiting assembly 5 is disposed above the card separating ramp m1 to form a predetermined gap therebetween. The card limiting assembly 5 is configured to limit the number of cards passing through the predetermined gap to be one card by pressing and gap control. The card limiting assembly 5 effectively limits multiple stacked cards from passing through simultaneously to allow only a single card to pass through a limiting gap. The predetermined gap is adjustable based on card thickness, thereby accommodating various card types and achieving efficient and stable single-card dispensing, which improves accuracy and reliability of card dealing.

Optionally, referring to FIGS. 27 and 28, in the present embodiment, the card dealing channel further includes a stepped separating ramp m3 disposed between the card separating ramp m1 and the gently sloped card guiding surface m2, which is configured for secondary card separation. Specifically, the stepped separating ramp m3 sequentially includes a first guiding ramp m31 and a second card separating ramp m32. An inclination angle of the first guiding ramp m31 is smaller than an inclination angle of the second card separating ramp m2. The two ramps together form the stepped separating ramp m3, which is used for further separating cards to enhance the separating effect. Certainly, in other embodiments, the stepped separating ramp m3 may be omitted and replaced with a curved surface transition. No particular limitation is imposed herein.

Optionally, referring to FIGS. 27, 28, and FIG. 31, in the present embodiment, the card limiting assembly 5 includes an active card limiting wheel 51 disposed above the card separating ramp m1 and configured to press and guide a card to move forward along the card separating ramp m1.

Compared to the method that merely relies on a fixed gap for physical limitation and compression, the active card limiting wheel 51 is capable of continuously and actively applying pressure and exerting a continuous pushing force onto the card. In this manner, the card moves smoothly along a specific direction on the card separating ramp m1 and preferentially deals the card adjacent to the active card limiting wheel 51. Therefore, multiple cards being driven simultaneously can be effectively prevented, thereby improving card separation accuracy.

Optionally, referring to FIGS. 28 and 29, in the present embodiment, a clearance groove f is formed in the card separating ramp m1 at a position corresponding to the active card limiting wheel 51. The clearance groove f is recessed downward and configured to accommodate the active card limiting wheel 51. A groove bottom of the clearance groove f is parallel to the card separating ramp m1. In this way, contact insufficiency or rotational resistance of the friction wheel caused by protrusion of the active card limiting wheel 51 or spatial constraints between the active card limiting wheel 51 and the card separating ramp m1 can be avoided.

In order to avoid local wear, deformation, or precision degradation of the card separating ramp m1 due to prolonged friction and impact between the active card limiting wheel 51, the card surface, and the card separating ramp m1, which may adversely affect the service life of the whole machine, optionally, referring to FIG. 29, in the present embodiment, at least a portion of the card separating ramp m1 corresponding to the active card limiting wheel 51 is configured as a wear-resistant component 11 that is detachably mounted within the housing 1. Specifically, a sloped surface mounting groove g is formed in a region of the housing 1 where the card separating ramp m1 corresponds to the active card limiting wheel 51. The wear-resistant component 11 is mounted in the sloped surface mounting groove g by screws (not shown in the figures). In this manner, wear resistance and maintainability of key portions of the card separating ramp m1 are improved, thereby effectively extending the service life of the entire machine and enhancing card dealing stability.

Optionally, in the present embodiment, a width of the predetermined gap is 0.1 mm to 2 mm. In some embodiments, the width is specifically selected as 0.1 mm, 0.3 mm, 0.5 mm, 0.8 mm, 1 mm, 1.3 mm, 1.5 mm, 1.8 mm, or 2 mm, as long as it falls within a range of 0.1 mm to 2 mm. No specific limitation is imposed herein.

Optionally, an included angle α between the card separating ramp m1 and a bottom surface of the card storage chamber a is within a range of 120° to 160°. According to tests, the angle α within this range effectively improves sliding of the cards during the separating process, allowing cards to gradually shift during guiding and thereby reducing a risk of card stacking and overlapping. It is understood that, since the card supporting plate 21 is parallel to the bottom surface of the card storage chamber a, the included angle α between the card separating ramp m1 and the card supporting plate 21 is also within the range of 120° to 160°. Specifically, referring to FIG. 27, in the present embodiment, the included angle α between the card separating ramp m1 and the bottom surface of the card storage chamber a is 146°. Certainly, in other embodiments, the included angle α between the card separating ramp m1 and the bottom surface of the card storage chamber a may also be 120°, 125°, 130°, 135°, 140°, 145°, 150°, 155°, or 160°, as long as it falls within the range of 120° to 160°. No specific limitation is imposed herein.

Optionally, referring to FIGS. 30 to 32, in the present embodiment, two sliding grooves i are respectively formed on each of the left sidewall and the right sidewall of the card storage chamber a and extend in an up-and-down direction. A sliding rod 12 is disposed within each sliding groove i. A sliding sleeve 211 is extended from the card supporting plate 21 toward the side of the sliding groove i. The sliding sleeve 211 is sleeved on the sliding rod 12 to allow the card supporting plate 21 to smoothly slide up and down within the card storage chamber a. The resilient card supporting member is a compression spring 22, which is sleeved on the sliding rod 12 and located between the sliding sleeve 211 and a bottom of the sliding groove i. The configuration of four sliding grooves i and four sliding rods 12 ensures the stability of up-and-down movement of the card supporting plate 21.

Optionally, referring to FIGS. 30, 31, and FIG. 33, in the present embodiment, the card dealing mechanism 4 includes a card dealing wheel 41, a resilient card pressing assembly, and a first motor 44.

The card dealing wheel 41 is rotatably disposed in the housing 1 via a card dealing shaft 42 and is located at a lower side of the card dealing channel. Specifically, the card dealing wheel 41 is fixedly mounted on the card dealing shaft 42 and rotates along with rotation of the card dealing shaft 42.

The resilient card pressing assembly is disposed above the card dealing wheel 41 and corresponds to an upper side of the card dealing channel, and configured to cooperate with the card dealing wheel 41 to clamp and convey a card. Specifically, the resilient card pressing assembly includes a card pressing shaft 431 that is mounted in the housing 1 and is vertically floatable; two torsion springs 432 respectively sleeved on two ends of the card pressing shaft 431, with torsion legs abutting against an inner upper side of the housing 1; and a card pressing wheel 433 rotatably sleeved on the card pressing shaft 431.

The first motor 44 is disposed in the housing 1 and is in transmission connection with one side of the card dealing shaft 42, and configured to provide power to the card dealing shaft 42.

The card limiting assembly 5 further includes a separating shaft 52. The separating shaft 52 is rotatably disposed in the housing 1 and is fixedly provided with the active card limiting wheel 51. One end of the separating shaft 52 is in power transmission with the same side end of the card dealing shaft 42 through a belt or gear structure, such that the active card limiting wheel 51 operates synchronously with the card dealing mechanism 4.

The card dispensing wheel 31 is rotatably disposed above the card supporting plate 21 via a card dispensing shaft 32. One side end of the card dispensing shaft 32 is in power transmission with the same side end of the separating shaft 52 through a belt or gear structure, so that the card dispensing wheel 31 moves synchronously with the active card limiting wheel 51 to perform a card dispensing operation.

The active card limiting wheel 51 and the card dispensing wheel 31 rotate in the same direction, thereby guiding a card. Specifically, an intermediate gear can be configured to achieve such movement. A card dispensing speed of the card dispensing mechanism 3 is smaller than a card dealing speed of the card dealing mechanism 4. In this way, card dispensing rhythm can be better controlled, and card jam or card stacking in the card dealing channel can be prevented. Specifically, adjustment of a transmission ratio can be used to achieve this effect.

Specifically, referring to FIG. 33, in the present embodiment, an output end of the first motor 44 is in meshed transmission with a worm 45, and the worm 45 is meshed with a worm gear 46 disposed at one end of the card dealing shaft 42. The other end of the card dealing shaft 42 is provided with a card dealing shaft gear 47. The card dealing shaft gear 47 is in mesh engagement with a first separating shaft gear 53 on the separating shaft 52 via a first intermediate gear 48. Another end of the separating shaft 52 is provided with a second separating shaft gear 54, which is in mesh engagement with a card dispensing shaft gear 33 on the card dispensing shaft 32 via a second intermediate gear 55.

To enable the card dealing device 100, which limits simultaneous dealing of multiple cards, to perform multi-directional precise dealing, optionally, referring to FIG. 30 and FIGS. 34 to 36, in the present embodiment, the card dealing device 100 further includes a base 6 and a rotation mechanism.

The base 6 is disposed below the housing 1 and configured to provide support. The rotation mechanism connects the base 6 and the housing 1 and is configured to drive the housing 1 to rotate relative to the base 6.

Specifically, the rotation mechanism includes a central gear plate 71, a second motor 72, a planetary gear 74, a control circuit board 75, and a resilient buffering assembly.

The central gear plate 71 is assembled within the base 6, with its upper end rotatably connected to a bottom of the housing 1. The second motor 72 is assembled within the housing 1. The planetary gear 74 is rotatably disposed within the housing 1, is in transmission connection with the second motor 72, and is in meshing engagement with the central gear plate 71. Optionally, an output shaft of the second motor 72 is in transmission connection with the planetary gear 74 through a gearbox 73. The control circuit board 75 is disposed within the housing 1, specifically at an upper portion of the housing 1, and is electrically connected to the second motor 72, for controlling the rotation of the second motor 72. Accordingly, operation of the second motor 72 drives the planetary gear 74 to rotate, and the planetary gear 74 rotates around the central gear plate 71, thereby driving the housing 1 to rotate about a designated axis relative to the base 6. In the present embodiment, the control circuit board 75 is also electrically connected to the first motor 44 for controlling the rotation of the first motor 44. Specifically, the control manner of the control circuit board 75 to the first motor 44 and the second motor 72 is not the point of improvement in the present application and will not be elaborated herein.

The resilient buffering assembly is disposed between the rotation mechanism and the base 6 and is configured to buffer impact during start-up or abrupt stop of rotation. That is, the resilient buffering assembly can absorb or cushion mechanical shock caused by instantaneous start-up or abrupt stop, thereby effectively reducing vibration and wear between internal parts of the rotation mechanism and/or the base 6.

Optionally, in the present embodiment, the resilient buffering assembly includes arc-shaped positioning holes o, limiting posts 77, arc-shaped buffering grooves j, buffering springs 78, and positioning posts 79. Three arc-shaped positioning holes o are circumferentially arranged on the base 6 around the center of the central gear plate 71. Three limiting posts 77 are correspondingly disposed on a bottom surface of the central gear plate 71 for insertion into the arc-shaped positioning holes o. Three arc-shaped buffering grooves j are circumferentially arranged on the bottom surface of the central gear plate 71, and two buffering springs 78 are disposed in each arc-shaped buffering groove j. Three positioning posts 79 are correspondingly disposed within the base 6, each inserted into a corresponding arc-shaped buffering groove j and located between the two buffering springs 78. In this way, during start-up, the second motor 72 rotates and drives the planetary gear 74 to rotate, the planetary gear 74 pushes the central gear plate 71 to rotate until a limiting post 77 of the central gear plate 71 reaches an end of the corresponding arc-shaped positioning hole o of the base 6 and stops. During this process, the positioning post 79 in the base 6 compresses the buffering springs 78 within the arc-shaped buffering groove j of the central gear plate 71 to cushion the rigid impact. The principle during abrupt stop is similar and will not be further elaborated. Certainly, in other embodiments, the number of arc-shaped positioning holes o, limiting posts 77, and arc-shaped buffering grooves j may also be one, two, four, or more, which is not specifically limited herein.

The above is only intended to illustrate the technical solution of the present disclosure and should not be construed as limiting. Other modifications or equivalent substitutions made to the technical solution of the present disclosure by those skilled in the art without departing from the spirit and scope of the present disclosure shall also fall within the scope of the claims of the present disclosure.