MULTI-FUNCTIONAL ELECTRIC SHARPENER

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

The application claims priority to Chinese patent application No. 2024229699634, filed on Dec. 3, 2024, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The invention relates to the field of sharpener, in particular, to a multi-functional electric sharpener.

BACKGROUND

Knives are an essential tool in every kitchen. With the development of society, people have certain requirements for the use of kitchen tools. For knives, which are kitchen tools used almost every day, sharpeners are also well known. Due to the daily use of knives, the blades will wear out, making the knives less sharp, so daily sharpening is also essential.

In order to meet the sharpening requirements of different knives, the sharpening grooves of existing electric sharpeners are generally designed as universal grooves, which can meet the basic sharpening requirements of a variety of knives. However, this also leads to a generally low sharpening match with each type of knife, causing the knife to swing randomly during sharpening, making it impossible for the blade to fit closely to the sharpening member and be sharpened evenly.

Moreover, in many cases, knives only need to be sharpened and maintained using a sharpening stick, but existing sharpeners do not have functions of the sharpening stick, and a single sharpening stick is relatively long and difficult to store.

Therefore, it is necessary to provide a multi-functional electric sharpener to solve the above-mentioned technical problems.

SUMMARY

The invention provides a multi-functional electric sharpener, which solves the problem that the sharpening groove of the existing electric sharpener is not well matched with the sharpening degree of the knife, the knife will swing during the sharpening, and the sharpening effect is affected.

In order to solve the above technical problems, a multi-functional electric sharpener provided by the invention includes a hollow housing, wherein a bearing seat is arranged transversely in an inner cavity of the housing, and a driving motor is arranged at a front end of a top of the bearing seat; an output shaft of the driving motor is provided with a rotating shaft extending backwards, a plurality of groups of sharpening members are arranged at intervals on the rotating shaft, and each group of the sharpening members includes two sharpening blades which are parallel to each other and arranged at intervals;

• • a top of the housing is provided with a sharpening opening covering positions of a plurality of groups of the sharpening members, and a guide assembly located in the sharpening opening is arranged on the bearing seat; the guide assembly includes a guide cover which is arranged outside the plurality of groups of the sharpening members, and a plurality of sharpening ports corresponding to the sharpening blades one by one are formed on a top of the guide cover for exposing the sharpening blades; guide blocks are arranged at both ends of the top of the guide cover and between each two adjacent groups of the sharpening members, and a surface of the guide block facing the sharpening blade forms an inclined surface; a support block is arranged at the top of the guide cover and between the two sharpening blades of the same group, and a sharpening groove is formed between the support block and the opposite guide block; spring sheets for pressing the tool against the surface of the guide block are respectively arranged on both sides of the support block, and the spring sheets, the support block and the guide cover are an integrated structure.

The inner cavity of the housing is located at a bottom of the bearing seat to form an accommodating cavity, a rear end of the housing is provided with a fixing hole communicated with the accommodating cavity, and the accommodating cavity accommodates a sharpening stick that can be taken in and out through the fixing hole.

Preferably, the housing includes an upper housing and a lower housing, which are combined to form a hollow housing, and an openable end cover is arranged at a front end of the upper housing.

Preferably, the driving motor is a dual-shaft motor, an auxiliary sharpening blade is fixedly connected with a front output shaft, and the auxiliary sharpening blade is exposed by opening the end cover.

Preferably, the invention further includes a sealing cover, wherein the sealing cover is snapped onto the sharpening opening at the top of the housing and has a top provided with slots corresponding to the plurality of sharpening ports.

Preferably, the sharpening stick includes a hollow handle and a sharpening rod, and a rear end of the sharpening rod may be arranged in an inner cavity of the handle.

Preferably, a mounting seat is fixedly mounted on a rear end of the sharpening rod, and an eccentric column is arranged on a rear end of the mounting seat; a fixing block is fixedly mounted on a surface of the eccentric column, an elastic opening ring with two ends not connected is wound around the eccentric column, and a bayonet is arranged on the elastic opening ring to be nested in the fixing block; when the rear end of the sharpening rod is located in the inner cavity of the handle, the sharpening rod is rotated forward or reversely to tighten or open the elastic opening ring, and the inner cavity of the handle is tightened when the elastic opening ring is opened so as to achieve locking.

Preferably, a front end of the handle is provided with a raised clamping position, and the bottom of the bearing seat is provided with a C-shaped elastic clip for clamping the clamping position; limiting columns for limiting and guiding both ends of the C-shaped elastic clip are respectively arranged on both sides of the bottom of the bearing seat, and a locking groove is arranged on a front surface of the C-shaped elastic clip; a rebounder is arranged at the bottom of the bearing seat, a locking column is arranged on a movable part of the rebounder for locking with the locking groove, and the locking column of the rebounder is retracted and extended to drive both ends of the C-shaped elastic clip to clamp or open.

Preferably, a switch button is arranged on a surface of the housing, and a power socket is provided at the front end of the housing. The power is supplied by means of connecting a power cord to a power source.

Preferably, a collecting cover is detachably arranged at the bottom of the housing, and a magnetic sheet is adhered to an inner surface of the collecting cover.

Compared with the prior art, the multi-functional electric sharpener provided by the invention has the following beneficial effects:

• • The invention provides a multi-functional electric sharpener, wherein by providing the guide assembly, the elastic sheet integrated with the guide cover pushes the tool against the inclined surface of the guide block, and the inclined surface supports the tool, so that the tool may stably contact with the sharpening blade in an inclined state, thereby on the one hand forming an angle between the tool and the sharpening blade, and on the other hand keeping the tool stable to prevent the tool from swinging or shaking in the sharpening port while improving the sharpening effect. Moreover, a sharpening stick with telescopic functions is stored in the housing, so that the blade of the tool may be simply sharpened and maintained by pressing the pop-up sharpening stick without power supply, and the telescopic function of the sharpening stick not only provides the sharpening function but also solves the problem of storing the sharpening stick.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a structural diagram of a preferred embodiment of a multi-functional electric sharpener provided by the invention;

FIG. 2 is an exploded diagram of the multi-functional electric sharpener shown in FIG. 1;

FIG. 3 is a structural diagram a driving motor and a sharpening member shown in FIG. 2;

FIG. 4 is a structural diagram of a guide assembly and a bearing seat shown in FIG. 2;

FIG. 5 is an exploded diagram of the guide assembly shown in FIG. 2;

FIG. 6 is a structural diagram of the guide assembly shown in FIG. 2 when assembled;

FIG. 7 shows the mounting positions of a rebounder of the invention;

FIG. 8 is a structural diagram of the rebounder and a C-shaped elastic clip of the invention;

FIG. 9 is an exploded diagram of a sharpening stick of the invention;

FIG. 10 is a structural diagram of the sharpening stick of the invention when assembled;

FIG. 11 is a cross-sectional diagram of the sharpening stick of the invention;

FIG. 12 is a structural diagram of a collecting cover of the invention;

FIG. 13 is a structural diagram of another embodiment of an elastic sheet of the invention.

Reference numerals in figures: 1—housing, 11—upper housing, 12—lower housing, 13—sharpening opening, 14—sealing cover, 15—end cover, 2—bearing seat, 3—driving motor, 4—rotating shaft, 5—sharpening member, 51—sharpening blade, 52—auxiliary sharpening blade, 6—guide assembly, 61—guide cover, 62—sharpening port, 63—guide block, 64—elastic sheet, 7—fixing hole, 8—sharpening stick, 81—handle, 82—sharpening rod, 83—mounting seat, 84—eccentric column, 85—fixing block, 86—elastic opening ring, 87—bayonet, 88—clamping position, 9—C-shaped elastic clip, 91—locking groove, 10—limiting column, 16—switch button, 17—collecting cover, 18—slide rail, 19—rebounder, 191—locking column.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The invention is further described with reference to the accompanying drawings and embodiments.

With reference to FIGS. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12, FIG. 1 is a structural diagram of a preferred embodiment of a multi-functional electric sharpener provided by the invention; FIG. 2 is an exploded diagram of the multi-functional electric sharpener shown in FIG. 1; FIG. 3 is a structural diagram a motor and a sharpening member shown in FIG. 1; FIG. 4 is a structural diagram of a guide assembly and a bearing seat shown in FIG. 1; FIG. 5 is an exploded diagram of the guide assembly shown in FIG. 2; FIG. 6 is a structural diagram of the guide assembly shown in FIG. 2 when assembled; FIG. 7 shows the mounting positions of a rebounder of the invention; FIG. 8 is a structural diagram of the rebounder and a C-shaped elastic clip of the invention; FIG. 9 is an exploded diagram of a sharpening stick of the invention; FIG. 10 is a structural diagram of the sharpening stick of the invention when assembled; FIG. 11 is a cross-sectional diagram of the sharpening stick of the invention; FIG. 12 is a structural diagram of a collecting cover of the invention.

A multi-functional electric sharpener includes a hollow housing 1, wherein a bearing seat 2 is arranged transversely in an inner cavity of the housing 1, and a driving motor 3 is arranged at a front end of a top of the bearing seat 2; an output shaft of the driving motor 3 is provided with a rotating shaft 4 extending backwards, a plurality of groups of sharpening members 5 are arranged at intervals on the rotating shaft 4, and each group of the sharpening members 5 comprises two sharpening blades 51 which are parallel to each other and arranged at intervals.

The driving motor 3 is fixedly mounted on the bearing seat 2 through a motor gland, and the other end of the rotating shaft 4 is supported on the bearing seat 2 through a bearing and a mounting bracket, so that the rotating shaft 4 and the sharpening blade 51 remain stable during rotation to avoid vibration.

A top of the bearing seat 2 is divided into a mounting position and a sharpening functional area. The driving motor 3 is mounted on the mounting position, and the plurality of groups of the sharpening members 5 are located in the sharpening functional area.

The plurality of groups of the sharpening members 5 are sharpening members of different forms. For example, the sharpening members 5 may be set to three groups, namely coarse sharpening, careful sharpening and fine sharpening. Each group of the sharpening members 5 includes two sharpening blades 51 that are parallel to each other and arranged at intervals, which are used to sharpen both sides of the blade.

A pin groove distributed along an axial direction is arranged on a fixing sleeve part of an axis of the sharpening blade 51, and a corresponding pin hole is arranged on the rotating shaft 4. A pin is fixed into the pin hole along the pin groove, and the sharpening blade 51 is mounting on the rotating shaft 4, so that the sharpening blade 51 rotates synchronously with the rotating shaft, and may move slightly in an axial direction of the rotating shaft 4.

A spring is arranged between the two sharpening blades 51 of each group on the rotating shaft 4 to spread the two sharpening blades 51 apart to prevent one of them from being too close to each other and being unable to be used normally for sharpening. Meanwhile, the two circular sharpening blades may bounce towards each other due to the elastic force of the spring, but only within the distance of the pin groove, so that the sharpening blade 51 is fully in contact with the tool but not over-extruded, avoiding excessive sharpening and achieving flexible sharpening.

When the driving motor 3 rotates, the rotating shaft 4 is driven to rotate, thereby driving the plurality of groups of the sharpening members 5 to rotate, so that an knife edge is attached to one of the sharpening blades 51 for sharpening.

As shown in FIGS. 4 to 5, the top of the housing 1 is provided with a sharpening opening 13 covering the positions of the plurality of groups of the sharpening members 5, i.e., the sharpening opening 13 corresponds to the sharpening functional area.

A guide assembly 6 located in the sharpening opening 13 is arranged on the bearing seat 2, the guide assembly 6 includes a guide cover 61 which is arranged outside the plurality of groups of the sharpening members 5, and the guide cover 61 is mounted on the bearing seat 2 by screws.

A plurality of sharpening ports 62 corresponding to the sharpening blades 51 one by one are formed on a top of the guide cover 61 for exposing the sharpening blades; guide blocks 63 are arranged at both ends of the top of the guide cover 61 and between each two adjacent groups of the sharpening members 5, and a surface of the guide block 63 facing the sharpening blade 51 forms an inclined surface; a support block is arranged at the top of the guide cover 61 and between the two sharpening blades 51 of the same group, and a sharpening groove is formed between the support block and the opposite guide block 63; the sharpening groove is communicated with the sharpening port 62, and both sides of the support block are respectively provided with integrated elastic sheets 64 for pressing the tool tightly against a surface of the guide block 63.

The elastic sheet 64, the support block and the guide cover 61 are an integrated structure.

A sharpening groove is formed between the inclined surface of the guide block 63 and the opposite support block, and the sharpening groove corresponds to the sharpening port 62 one by one, so that the tool may enter along the sharpening groove and the sharpening port 62 to contact the sharpening blade 51.

The guide block 63 includes two specifications of being at both ends and being in the middle, wherein both sides of the plurality of guide blocks 63 in the middle are provided with the inclined surface so that the guide blocks are in a form of being wide at the top and narrow at the bottom; the guide blocks 63 at both ends are only provided with the inclined surface on an inner side, i.e., each inclined surface is opposite to the sharpening blade 51, and the inclined surface forms an angle with the axis of the rotating shaft 4 and the sharpening blade 51, so that during sharpening, one side of the blade is attached to the inclined surface for support, and the other side forms an angle with the sharpening blade 51 for sharpening.

In order to ensure the stability of the tool during sharpening, the elastic sheet 64 integrated with the guide cover 61 is provided at the sharpening port 62 of the guide cover 61, which may press the blade against the inclined surface to prevent the blade from swinging or shaking under the force of the sharpening blade 51, thereby ensuring the sharpening effect.

The guide block 63 is of a detachable structure, with a protrusion at a bottom, and a corresponding groove at a top of the guide cover 61; the above two are mounted by snap-fitting.

As shown in FIG. 13, another embodiment of the guide cover 61 and the elastic sheet 64 is provided, wherein the support block is provided on the guide cover 61 at a position corresponding to a position between the two sharpening blades 51 of the same group, and the elastic sheet 64 and the support block are of separate structures; a top of the support block is provided with an inserting slot, and a top of the elastic sheet 64 is provided with an inserting sheet for inserting into the inserting slot; one elastic sheet 64 is arranged at the position of each sharpening groove, and the elastic sheet 64 is opposite to the inclined surface of the guide block 63 and is used to press the tool against the inclined surface.

The inner cavity of the housing 1 is located at a bottom of the bearing seat 2 to form an accommodating cavity, a rear end of the housing 1 is provided with a fixing hole 7 communicated with the accommodating cavity, and the accommodating cavity accommodates a sharpening stick 8 that can be taken in and out through the fixing hole 7.

The housing 1 includes an upper housing 11 and a lower housing 12, which are combined to form a hollow housing 1, and the two may be connected by means of snap-fit or screws, etc., so as to facilitate disassembly, maintenance and cleaning. An anti-skid pad is arranged at a bottom of the lower housing 12, so as to be placed on a table for use.

An openable end cover 15 is arranged at a front end of the upper housing 11. The driving motor 3 is a dual-shaft motor, an auxiliary sharpening blade 52 is fixedly connected with a front output shaft, and the auxiliary sharpening blade 52 is exposed by opening the end cover 15.

A buckle groove is provided at the connection between the end cover 15 and a front end surface of the upper housing 11. The end cover 15 is mounted in the form of a buckle. The end cover 15 may be opened through the buckle groove, and the auxiliary grinding blade 52 may be used to sharpen other metal tools.

The invention further includes a sealing cover 14, wherein the sealing cover 14 is snapped onto the sharpening opening 13 at the top of the housing 1 and has a top provided with slots corresponding to the plurality of sharpening ports 62. The sealing cover 14 is made of metal or plastic and is used to block the sharpening opening 13 and cover the sharpening member 5 and the guide assembly 6 therein, making the appearance more beautiful and safer.

The sharpening stick 8 includes a hollow handle 81 and a sharpening rod 82, and a rear end of the sharpening rod 82 may be arranged in an inner cavity of the handle 81.

A mounting seat 83 is fixedly mounted on a rear end of the sharpening rod 82, and an eccentric column 84 is arranged on a rear end of the mounting seat 83; a fixing block 85 is fixedly mounted on a surface of the eccentric column 84, and an elastic opening ring 86 with two ends not connected is wound around the eccentric column 84; a limiting disk is arranged at a rear end of the eccentric column 84 so that the elastic opening ring 86 may not be separated from the eccentric column 84. A bayonet 87 is arranged on the elastic opening ring 86 to be nested in the fixing block 85, and the bayonet 87 is located closed to one end; when the rear end of the sharpening rod 82 is located in the inner cavity of the handle 81, the sharpening rod 82 is rotated forward or reversely to tighten or open the elastic opening ring 86, and the inner cavity of the handle 81 is tightened when the elastic opening ring 86 is opened so as to achieve locking. The above multiple components constitute a tensioning assembly arranged at the rear end of the sharpening rod 82.

The sharpening stick 8 is a telescopic sharpening stick, and the length thereof may be adjusted by telescoping. The tensioning assembly at the rear end of the sharpening rod 82 is used for locking or unlocking, so that the sharpening rod 82 may be pulled out to adjust the length and locked.

A rear end of the handle 81 is provided with a cover plate, which may be opened, and the sharpening rod 82 together with the tensioning assembly is inserted into the inner cavity of the handle 81 from the rear end; the front end of the sharpening rod 82 extends from a front end of the handle 81, and then the cover plate is closed to complete the assembly.

When the assembly is completed, the elastic opening ring 86 is always squeezed by the inner wall of the handle 81 and is in a compressed state to generate elastic force all the time, which has a tendency to open and restore the deformation, so that the inner wall of the handle 81 is supported tightly. The friction between the above two makes the elastic opening ring unable to move, thereby making the eccentric column 84, the mounting seat 83 and the sharpening rod 82 unable to move relative to the handle 81.

When an extension length of the sharpening rod 82 needs to be adjusted, the sharpening rod 82 is rotated forward to drive the mounting seat 83 and the eccentric column 84 to rotate for tightening one end of the elastic opening ring 86 inward and rotating so that the elastic opening ring 86 is further compressed to reduce the overall size and the contact surface with the inner wall of the handle 81 to a minimum while reducing the friction between the two to a minimum for moving in a length direction of the handle 81, thereby adjusting the extension length of the sharpening rod 82; when the adjustment is in place, the sharpening rod 82 is rotated to be opened and restore the state of being tightly supported by the inner wall of the handle 81 to achieve locking.

The extension length of the sharpening rod 82 may be adjusted by the tensioning assembly, so that the sharpening rod is easy to use and store in the housing 1.

Since generally only radial or tangential force is generated on the surface of the sharpening rod 82 and the force acting on the axial direction is relatively small when the sharpening stick 8 is used for sharpening, there is no need to worry about the sharpening rod 82 suddenly retracting due to the force. However, it should be noted that the front end of the sharpening rod 82 may not be pressed against an object during use.

A front end of the handle 81 is provided with a raised clamping position 88, and the bottom of the bearing seat 2 is provided with a C-shaped elastic clip 9 for clamping the clamping position 88; limiting columns 10 for limiting and guiding both ends of the C-shaped elastic clip 9 are respectively arranged on both sides of the bottom of the bearing seat 2, and a locking groove 91 is arranged on a front surface of the C-shaped elastic clip 9; a rebounder 19 is arranged at the bottom of the bearing seat 2, a locking column 191 is arranged on a movable part of the rebounder 19 for locking with the locking groove 91, and the locking column 191 of the rebounder 19 is retracted and extended to drive both ends of the C-shaped elastic clip 9 to clamp or open.

The bottom of the bearing seat 2 is provided with a slide rail 18 for the handle 81 of the sharpening stick 8 to slide.

Since the handle 81 itself is thicker than the sharpening rod 82 and the handle 81 is provided with a raised annular clamping position 88, a gap is formed between the sharpening rod 82 and the bottom of the bearing seat 2, and the C-shaped elastic clip 9 and the rebounder 19 are fixedly mounted at the bottom of the bearing seat 2 when the sharpening stick 8 is received in the accommodating cavity, so that the movement of the sharpening rod 82 may not be blocked.

The rebounder 19 has the function of being ejected by pressing once and being retracted by pressing again. When the handle 81 moves inward, the clamping position 88 first contacts the front portion of the C-shaped elastic clip 9 and then acts on the movable part of the rebounder 19 so that the rebounder 19 is retracted to hence pull the locking groove 91 of the C-shaped elastic clip 9 forward and cause the C-shaped elastic clip 9 to deform for the clamps at both ends to be tightened inwards under the guidance of the limiting column 10 to clamp the clamping position 88, thereby completing the clamping and fixing of the sharpening rod 8; when the sharpening stick 8 needs to be taken out for use, a rear end of the sharpening stick 8 is pressed inwards and the clamping position 88 again pushes forward against the front part of the C-shaped elastic clip 9, and the rebounder 19 is pressed once to be ejected by the locking groove 91 contacting against the locking column 191 on the rebounder 19 that locks with the locking groove 91 to push the front side of the C-shaped elastic clip 9 backwards, so that the clamps at both ends open outwards under the guidance of the limiting column 10 and the sharpening stick 8 is ejected and may be drawn out for use.

There are three limiting columns 10 on both sides according to the shape of the clamps at both ends of the C-shaped elastic clip 9. When the C-shaped elastic clip 9 is deformed, under the guidance and limiting action of the limiting columns 10, the clamps at both ends of the C-shaped elastic clip 9 will produce the effect of clamping inwards and opening outwards.

A switch button 16 is arranged on a surface of the housing 1, and a power socket is provided at the front end of the housing 1. The power is supplied by means of connecting a power cord to a power source.

A collecting cover 17 is detachably arranged at the bottom of the housing 1, and a magnetic sheet is adhered to an inner surface of the collecting cover. A sharpening functional area of the bearing seat 2 is of a hollow frame structure. The debris generated by sharpening will fall down, and the magnetic sheet on the collecting cover 17 will absorb the debris. The collecting cover 17 may be opened to clean the debris to prevent the debris from remaining in the body and affecting normal use.

Compared with the prior art, the multi-functional electric sharpener provided by the invention has the following beneficial effects:

• • By providing the guide assembly 6 to support the tool and the elastic sheet 64 is provided to push the tool against the inclined surface of the guide block 63, the tool contacts with the sharpening blade 51 in an inclined state, which on the one hand forms an angle between the tool and the sharpening blade 51, and on the other hand keeps the tool stable to prevent the tool from swinging or shaking in the sharpening port 61, thereby improving the sharpening effect. Moreover, the sharpening stick 8 is stored in the housing 1, so that the blade of the tool may be simply sharpened and maintained by pressing the ejected sharpening stick 8 without power supply, and the sharpening stick has the telescopic functions, thereby solving the problem of storing the sharpening stick while providing the sharpening function.

The above mentioned is only the embodiment of the invention, which does not limit the patent scope of the invention, and any equivalent structure or process made by using the specification and the drawings of the invention or direct or indirect applications in other related technical fields should be contained in the scope of patent protection in a similar way.