Dual-function knife sharpener

Abstract

The utility model discloses a double-function knife sharpener which is simple in structure and capable of meeting use requirements of various scenes and users, and comprises a shell, the shell is provided with a power source, a rotatable first rolling wheel and a support, and the rolling wheel and the support are arranged along an axis A; a grinding component is arranged on the bracket, and the grinding component is provided with a grinding surface; a first clutch transmission unit is arranged between the first roller and the support, and the output end of the power source is connected with the support through a second clutch transmission unit. In the manual mode, the first clutch transmission unit combines the first roller with the support in a transmission mode, the second clutch transmission unit disconnects the support from the output end of the power source in a transmission mode, the first roller moves along the surface of the base body, and the first clutch transmission unit drives the support to rotate so that the grinding face can rotate. In the electric mode, the first clutch transmission unit disconnects the first roller from the support in a transmission mode; the utility model relates to the technical field of knife sharpeners.

Description

Technical Field

[0001] The utility model relates to the technical field of knife sharpeners, more specifically to a dual-function knife sharpener. Background Art

[0002] Existing knife sharpeners are generally divided into two types: electric knife sharpeners and non-electric knife sharpeners, both of which are used to sharpen knives such as kitchen knives or sharpen the knives.

[0003] Please refer to the roller grinder using the interference fit between the roller and the shaft disclosed in publication number CN116157234A, which adopts the structure that rollers are respectively arranged at both ends of the handle body, one of which is provided with a grinding surface or a polishing surface for grinding and / or polishing the cutting tool, and when sharpening the knife, the two rollers are supported on the surface of the base body (table), and the device is pulled back and forth by the handle body, and when the two rollers are in contact with the table, they are rotated synchronously through the shaft, so that the blade of the tool is in contact with the grinding surface, and the rotating grinding surface grinds the blade;

[0004] This type of knife sharpener only has a manual sharpening function. When the grinding surface contacts the blade, the resistance of the user's mobile device body increases. The functionality is relatively single and cannot meet the needs of different scenarios and users. Utility Model Content

[0005] In view of the shortcomings and defects of the prior art, a dual-function knife sharpener is provided which has a simple structure and meets the needs of multiple scenarios and users.

[0006] A dual-function knife sharpener, comprising:

[0007] A housing, wherein the housing is provided with a power source, and a rotatable first roller and a bracket, wherein the first roller and the bracket are arranged along an axis A;

[0008] The bracket is provided with a grinding component, and the grinding component has a grinding surface;

[0009] A first clutch transmission unit is provided between the first roller and the bracket, and the output end of the power source is connected to the bracket through a second clutch transmission unit;

[0010] Manual mode: The first clutch transmission unit connects the first roller with the bracket, and the second clutch transmission unit disconnects the bracket from the power source output end. The first roller moves along the surface of the substrate, and the bracket is driven to rotate through the first clutch transmission unit to rotate the grinding surface.

[0011] Electric mode: the first clutch transmission unit disconnects the first roller from the bracket, the second clutch transmission unit connects the bracket to the power source output end, the power source output end rotates through the second clutch transmission unit to drive the bracket to rotate, so that the grinding surface rotates.

[0012] After adopting the above structure, the dual-function knife sharpener of the utility model has the following advantages compared with the prior art:

[0013] When sharpening a knife, firstly, the first roller is supported on the surface of the base body so that the device as a whole is lifted off the surface of the base body, and further, one side of the blade is brought into contact with the sharpening surface, and further, the functional mode of the knife sharpener is switched;

[0014] The knife sharpener of this application has two functional modes:

[0015] If a manual mode is required, the first roller is coupled to the bracket through the first clutch transmission unit, and the bracket is disconnected from the power source output end through the second clutch transmission unit. At this time, the device body is moved on the substrate surface (desktop) along the length direction of the blade through the first roller. The first roller rotates during the continuous contact with the substrate surface. The rotating first roller drives the bracket to rotate, and the rotation of the bracket drives the grinding surface to rotate. The grinding surface grinds the blade when in contact with the blade.

[0016] If the electric mode is required, the first roller is disconnected from the bracket through the first clutch transmission unit, and the bracket is connected to the power source output end through the second clutch transmission unit. At this time, the device body is moved on the base surface (desktop) along the length direction of the blade through the first roller, and the power source output end rotates to drive the bracket to rotate through the second clutch transmission unit, so that the grinding surface rotates, and the grinding surface grinds the blade when it contacts the blade.

[0017] When using, users can switch function modes as needed. The device has multiple functions to meet the needs of different scenarios.

[0018] In both functional modes, the grinding surface is in contact with the blade during the rotation process, which provides better grinding effect and shorter operation time.

[0019] The power source in the present solution can also be connected to the bracket in a manner of directly driving the bracket to rotate. In this transmission mode, when the knife sharpener is in manual mode, the power source stops outputting the rotational torque.

[0020] As an improvement of the utility model, the bracket is arranged at the front end of the first roller, and the first clutch transmission unit includes a first keyway arranged at the rear end of the bracket and a second keyway arranged at the front end of the first roller;

[0021] The first roller moves in the first direction, and after the first key slot is engaged with the second key slot, the first roller and the bracket are in a transmission connection position to lock the rotation of the bracket, and the bracket is driven to rotate by the first roller;

[0022] The first roller moves in the second direction, and after the first key slot is disconnected from the second key slot, the first roller and the bracket are in a transmission disconnected position.

[0023] As an improvement of the present invention, the second clutch transmission unit includes a sleeve arranged at the rear end of the bracket, and a transmission member driven to rotate by the output end of the power source, the sleeve and the transmission member are arranged opposite to each other, the sleeve and the bracket are interlocked in rotation, the sleeve and the first roller follow along the axis A, and the sleeve and the first roller are arranged to rotate independently, the sleeve tail end is provided with a transmission groove, and the transmission member front end is provided with a transmission block;

[0024] The first roller moves in the first direction, the first roller and the bracket obtain a transmission engagement position, the first roller drives the sliding sleeve to move in the first direction, the transmission groove and the transmission block are disengaged, and the transmission between the output end of the power source and the bracket is disconnected;

[0025] The first roller moves in the second direction, the first roller and the bracket obtain a transmission disconnected position, the first roller drives the sleeve to move in the second direction, the transmission groove and the transmission block disengage, the output end of the power source drives the transmission member to rotate, and the transmission member drives the bracket to rotate through the transmission block and the transmission groove.

[0026] As an improvement of the present invention, a connecting portion is provided at the tail end of the first roller, the bracket is provided with a connecting shaft which penetrates into the inner hole of the connecting portion, and the sliding sleeve is placed in the inner hole of the connecting portion and sleeved on the outer side of the connecting shaft;

[0027] A second bearing seat is embedded between the outer side of the sliding sleeve and the inner hole of the connecting part.

[0028] As an improvement of the present invention, a first bearing seat is provided on the outer shell, and the connecting portion penetrates into the inner hole of the first bearing seat and is connected to the inner hole of the first bearing seat.

[0029] As an improvement of the utility model, the connecting portion is provided with a radially movable steel ball, and an elastic member is provided at the bottom of the steel ball, and the elastic member drives the steel ball to move elastically in the radial direction;

[0030] The first roller moves along the first direction, and the inner hole of the first bearing seat abuts against the steel ball to drive the steel ball into the connecting portion;

[0031] The first roller moves along the second direction, and the steel ball moves out of the inner hole of the first bearing seat and radially moves to the outside of the connecting portion. The steel ball is located outside the inner hole of the first bearing seat, forming a blocking fit with the first bearing seat to limit the movement of the first roller along the first direction.

[0032] As an improvement of the present utility model, the shell is a long cylindrical structure, the first roller is arranged at the front end of the shell, and the second roller is also arranged at the rear end of the shell, and the first roller and the second roller are synchronously supported on the surface of the base.

[0033] As an improvement of the present utility model, a gripping portion is formed on the outer shell between the first roller and the second roller through an inward concave shape, and the diameter of the gripping portion is gradually increased from the inside to the outside.

[0034] As an improvement of the present invention, an assembly groove is provided at the front end of the bracket, and a magnetic block is provided on the bracket corresponding to the assembly groove, the grinding surface is provided at the front end of the grinding component, the rear end of the grinding component is inserted into the assembly groove, and the grinding component can be magnetically positioned and set by the magnetic block.

[0035] As an improvement of the utility model, a battery and a switch are arranged in the shell, the battery is electrically connected to the power source through the switch, the control end of the switch is arranged opposite to the tail of the first roller, the first roller moves in the second direction, the tail has a position that abuts against the control end of the switch, so that the control end is closed, thereby controlling the circuit between the battery and the power source to be turned on, the first roller moves in the first direction, the tail has a position that disengages from the control end of the switch, so that the control end is normally open, thereby controlling the circuit between the battery and the power source to be turned off. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the implementation of the utility model.

[0037] Figure 2 It is a structural schematic diagram of the utility model.

[0038] Figure 3 It is a schematic diagram of the internal structure of the shell of the utility model.

[0039] Figure 4 It is a half-section structural schematic diagram of the utility model in electric mode.

[0040] Figure 5 It is a schematic diagram of the position of the first roller and the position of the sliding sleeve in the electric mode of the utility model.

[0041] Figure 6 It is a structural schematic diagram of the transmission groove of the sliding sleeve and the transmission block of the transmission member after being matched and connected in the electric mode of the utility model.

[0042] Figure 7 It is a semi-section structural schematic diagram of the utility model in manual mode.

[0043] Figure 8 It is a schematic diagram of the position of the first roller and the position of the sliding sleeve in the manual mode of the utility model.

[0044] Fig. 9 It is a partial cross-sectional structural schematic diagram of the utility model after the transmission groove of the sliding sleeve and the transmission block of the transmission member are disengaged from the fitting connection in the manual mode.

[0045] Fig.10 It is a partial structural schematic diagram of the utility model in the manual mode after the transmission groove of the sliding sleeve and the transmission block of the transmission member are disengaged from the fitting connection.

[0046] Fig.11 It is a structural schematic diagram of the first roller of the utility model.

[0047] Fig.12 It is a structural schematic diagram of the bracket of the utility model.

[0048] As shown in the figure: 1. Shell; 1.1. Hand-held part; 1.2. First bearing seat; 2. First roller; 2.1. Second keyway; 2.2. Connecting part; 3. Bracket; 3.1. Grinding component; 3.11. Grinding surface; 3.2. First keyway; 3.3. Connecting shaft; 3.4. Assembly groove; 3.41. Magnetic block; 3.42. Opening; 4. Power source; 5. Sleeve; 5.1. Second bearing seat; 5.2. Transmission groove; 6. Transmission part; 6.1. Transmission block; 7. Steel ball; 8. Second roller; 9. Battery; 9.1. Battery cover; 10. Switch; 10.1. Control end; 11. Blade; 12. Rubber ring; 13. Battery cover; 14. Tool positioning device. DETAILED DESCRIPTION

[0049] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0050] See also Figure 1-12 A dual-function knife sharpener, comprising:

[0051] A housing 1, wherein the housing 1 is provided with a power source 4, and a rotatable first roller 2 and a bracket 3, wherein the first roller 2 and the bracket 3 are arranged along an axis A;

[0052] The support 3 is provided with a grinding component 3.1, and the grinding component 3.1 has a grinding surface 3.11;

[0053] A first clutch transmission unit is provided between the first roller 2 and the bracket 3, and the output end of the power source 4 is connected to the bracket 3 via a second clutch transmission unit;

[0054] Manual mode: the first clutch transmission unit connects the first roller 2 with the bracket 3, the second clutch transmission unit disconnects the bracket 3 from the output end of the power source 4, the first roller 2 moves along the surface of the substrate, and the bracket 3 is driven to rotate through the first clutch transmission unit, so that the grinding surface 3.11 rotates;

[0055] Electric mode: the first clutch transmission unit disconnects the first roller 2 from the bracket 3, and the second clutch transmission unit connects the bracket 3 with the output end of the power source 4. The output end of the power source 4 rotates through the second clutch transmission unit to drive the bracket 3 to rotate, so that the grinding surface 3.11 rotates.

[0056] After adopting the above structure, the dual-function knife sharpener of the utility model has the following advantages compared with the prior art:

[0057] When sharpening the knife, firstly, the first roller 2 is supported on the surface of the substrate so that the device as a whole is lifted off the surface of the substrate, and further, one side of the blade 11 is brought into contact with the sharpening surface 3.11, and further, the functional mode of the knife sharpener is switched;

[0058] The knife sharpener of this application has two functional modes:

[0059] If the manual mode is needed, the first roller 2 is coupled to the bracket 3 through the first clutch transmission unit, and the bracket 3 is disconnected from the output end of the power source 4 through the second clutch transmission unit. At this time, the device body is moved on the substrate surface (desktop) along the length direction of the blade 11 by the first roller 2. The first roller 2 rotates during the continuous contact with the substrate surface. The rotating first roller 2 drives the bracket 3 to rotate. The rotation of the bracket 3 drives the grinding surface 3.11 to rotate. The grinding surface 3.11 grinds the blade 11 when in contact with the blade 11.

[0060] If the electric mode is required, the first roller 2 is disconnected from the bracket 3 through the first clutch transmission unit, and the bracket 3 is connected to the output end of the power source 4 through the second clutch transmission unit. At this time, the device body is moved on the substrate surface (desktop) along the length direction of the blade 11 through the first roller 2, and the output end of the power source 4 rotates through the second clutch transmission unit to drive the bracket 3 to rotate, so that the grinding surface 3.11 rotates, and the grinding surface 3.11 plays a grinding role on the blade 11 when it contacts the blade 11. The power source 4 can be a motor, or a mechanism that can output torque.

[0061] When using, users can switch function modes as needed. The device has multiple functions to meet the needs of different scenarios.

[0062] In both functional modes, the grinding surface 3.11 is in contact with the blade 11 during the rotation process, so the grinding effect is better and the operation time is shorter.

[0063] The power source 4 in this solution can also be connected to the bracket 3 in a manner of directly driving the bracket 3 to rotate. In this transmission mode, when the knife sharpener is in manual mode, the power source 4 stops outputting the rotational torque.

[0064] In this solution, a tool positioning device 14 can be provided to position the tool, and the tool positioning device 14 can adjust the angle between the blade of the tool and the grinding surface to meet the grinding requirements of various tools.

[0065] As an improvement of the present invention, the bracket 3 is arranged at the front end of the first roller 2, and the first clutch transmission unit includes a first keyway 3.2 arranged at the rear end of the bracket 3, and a second keyway 2.1 arranged at the front end of the first roller 2;

[0066] The first roller 2 moves in the first direction, and after the first key groove 3.2 is combined with the second key groove 2.1, the first roller 2 and the bracket 3 are in a transmission connection position, so as to lock the rotation of the bracket 3, and the bracket 3 is driven by the first roller 2 to rotate;

[0067] When the first roller 2 moves in the second direction and the first key slot 3.2 is disconnected from the second key slot 2.1, the first roller 2 and the bracket 3 are in a transmission disconnected position. After the above improvement, the first roller 2 and the bracket 3 are coaxially arranged, the first key slot 3.2 is arranged on the rear end face of the bracket 3, and the second key slot 2.1 is arranged on the front end face of the first roller 2, both of which are annular structures and are arranged relatively in position. When the first roller 2 moves in the first direction until the first key slot 3.2 is combined with the second key slot 2.1, the first roller 2 can be transmission-connected with the bracket 3, and the first roller 2 can be driven to drive the sliding sleeve 5 to move axially synchronously by moving the first roller 2, so that the transmission connection or transmission disconnection between the first roller 2 and the bracket 3 can be achieved, and the clutch transmission connection mode is realized with a relatively simple structure, which has the characteristics of low cost, reliable operation and long service life.

[0068] As an improvement of the present utility model, the second clutch transmission unit includes a sleeve 5 arranged at the rear end of the bracket 3, and a transmission member 6 driven to rotate by the output end of the power source 4, the sleeve 5 and the transmission member 6 are arranged opposite to each other, the sleeve 5 and the bracket 3 are interlocked in rotation, the sleeve 5 and the first roller 2 follow along the axis A, and the sleeve 5 and the first roller 2 are arranged to rotate independently, the sleeve 5 is provided with a transmission groove 5.2 at the rear end, and the transmission member 6 is provided with a transmission block 6.1 at the front end;

[0069] The first roller 2 moves in the first direction, the first roller 2 and the bracket 3 obtain a transmission engagement position, the first roller 2 drives the sliding sleeve 5 to move in the first direction, the transmission groove 5.2 and the transmission block 6.1 are disengaged, and the transmission between the output end of the power source 4 and the bracket 3 is disconnected;

[0070] The first roller 2 moves in the second direction, the first roller 2 and the bracket 3 obtain a transmission disconnected position, the first roller 2 drives the sleeve 5 to move in the second direction, the transmission groove 5.2 and the transmission block 6.1 are disengaged, the output end of the power source 4 drives the transmission member 6 to rotate, and the transmission member 6 drives the bracket 3 to rotate through the transmission block 6.1 and the transmission groove 5.2.

[0071] After the above improvements, by moving the first roller 2 to drive the sleeve 5 to move axially synchronously, the transmission connection or disconnection between the output end of the power source 4 and the bracket 3 can be achieved, and the clutch transmission connection method is realized with a relatively simple structure, which has the characteristics of low cost, reliable operation and long service life.

[0072] As an improvement of the present utility model, the tail end of the first roller 2 is provided with a connecting portion 2.2, the bracket 3 is provided with a connecting shaft 3.3 penetrating into the inner hole of the connecting portion 2.2, the sliding sleeve 5 is placed in the inner hole of the connecting portion 2.2 and sleeved on the outer side of the connecting shaft 3.3;

[0073] A second bearing seat 5.1 is embedded between the outer side of the sliding sleeve 5 and the inner hole of the connecting part 2.2.

[0074] After the above improvements, the structure layout is compact and the space occupied is small, which is conducive to the miniaturization of the device;

[0075] A second bearing seat 5.1 is engaged between the outer side of the sliding sleeve 5 and the inner hole of the connecting part 2.2, so that the sliding sleeve 5 and the first roller 2 can rotate independently in the electric mode, and has the characteristics of simple structure, stable and reliable operation.

[0076] The inner hole of the sliding sleeve 5 is provided with a spline groove, and the outer circumference of the connecting shaft 3.3 is provided with a spline. The sliding sleeve 5 is sleeved on the connecting shaft 3.3, and the spline groove and the spline are adapted to each other, so that the sliding sleeve 5 and the connecting shaft 3.3 are interlocked in the circumferential direction, but the sliding sleeve 5 can move axially;

[0077] After the above improvements, the structural layout is more compact and the operation is stable and reliable.

[0078] A shaft extending forward is provided at the front end of the transmission member 6, and the shaft extends into the through hole of the connecting shaft 3.3. A screw is inserted from the front end of the through hole into the connecting hole on the shaft and is threadedly fixed with the connecting hole. The head of the screw abuts against the front end of the through hole, which can make the connection between the components firm and avoid dislocation.

[0079] As an improvement of the utility model, a first bearing seat 1.2 is provided on the housing 1, and the connecting portion 2.2 penetrates into the inner hole of the first bearing seat 1.2 and is connected with the inner hole of the first bearing seat 1.2. After the first roller 2 is connected with the first bearing seat 1.2, it can rotate relative to the housing 1, and has the characteristics of simple structure, stable and reliable operation, and long service life.

[0080] As an improvement of the present invention, the connecting portion 2.2 is provided with a radially movable steel ball 7, and an elastic member is provided at the bottom of the steel ball 7, and the elastic member drives the steel ball 7 to elastically move radially;

[0081] The first roller 2 moves along the first direction, and the inner hole of the first bearing seat 1.2 abuts against the steel ball 7, driving the steel ball 7 into the connecting portion 2.2;

[0082] The first roller 2 moves in the second direction, and the steel ball 7 moves out of the inner hole of the first bearing seat 1.2 and moves radially to the outside of the connecting portion 2.2. The steel ball 7 is located outside the inner hole of the first bearing seat 1.2, and forms a blocking fit with the first bearing seat 1.2 to limit the first roller 2 from moving in the first direction. After the above improvement, the steel ball 7 is located outside the inner hole of the first bearing, and forms a blocking fit with the first bearing to limit the first roller 2 from moving in the first direction, so that the first roller 2 and the bracket 3 are stably in a transmission disconnected position, further improving the reliability of operation.

[0083] As an improvement of the present invention, the housing 1 is a long cylindrical structure, the first roller 2 is arranged at the front end of the housing 1, and the second roller 8 is also arranged at the rear end of the housing 1, and the first roller 2 and the second roller 8 are synchronously supported on the surface of the substrate. After the above improvement, when the device is placed on the surface of the substrate, the first roller 2 and the second roller 8 contact the surface of the substrate at the same time, and when the device is moved on the surface of the substrate, the movement is more stable, so that the sharpening effect and performance are better;

[0084] The outer circumferences of the first roller 2 and the second roller 8 are provided with rubber rings 12 to increase the friction force when in contact with the surface of the substrate, so that the first roller 2 and the second roller 8 can rotate smoothly.

[0085] As an improvement of the present invention, the housing 1 between the first roller 2 and the second roller 8 is formed with a gripping portion by being recessed, and the diameter of the gripping portion is gradually increased from the inside to the outside. After the above improvement, the power source 4 is placed in the housing 1 between the two rollers, and the gripping portion is also located in the middle of the housing 1. The structural design is more beautiful and ergonomic, and the user experience is better.

[0086] As an improvement of the utility model, the front end of the bracket 3 is provided with an assembly groove 3.4, and the bracket 3 is provided with a magnetic block 3.41 corresponding to the assembly groove 3.4, the grinding surface 3.11 is provided at the front end of the grinding component 3.1, the rear end of the grinding component 3.1 is placed in the assembly groove 3.4, and the grinding component 3.1 can be magnetically positioned by the magnetic block 3.41. After the above improvement, the grinding component 3.1 is detachably connected to the assembly groove 3.4, and the disassembly and assembly of the grinding component 3.1 is simple, and the user is convenient to maintain or replace. Of course, a plurality of grinding components 3.1 with different grinding performances (coarse grinding, fine grinding) can also be provided, and the user can assemble a suitable grinding component 3.1 according to the needs, and the applicability of the device is further improved. The grinding component 3.1 can adopt a whetstone, a grinding wheel, etc., and the left end face of the grinding component 3.1 is used as the grinding surface 3.11.

[0087] The grinding component 3.1 itself is made of metal that can be positioned by magnetic attraction, or the grinding component 3.1 is connected to metal that can be positioned by magnetic attraction.

[0088] As an improvement of the present invention, the side wall of the assembly groove 3.4 is provided with an opening 3.42. After the above improvement, the user can insert a finger or a hard object into the opening 3.42 to directly contact the side wall of the grinding component 3.1, so that the user can remove the grinding component 3.1 conveniently.

[0089] As an improvement of the utility model, a battery 9 and a switch 10 are arranged in the housing 1, and the battery 9 is electrically connected to the power source 4 through the switch 10. The control end 10.1 of the switch 10 is arranged opposite to the tail of the first roller 2. The first roller 2 moves in the second direction, and the tail has a position that is against the control end 10.1 of the switch 10, so that the control end 10.1 is closed, thereby controlling the circuit between the battery 9 and the power source 4 to be turned on. The first roller 2 moves in the first direction, and the tail has a position that is disengaged from the control end 10.1 of the switch 10, so that the control end 10.1 is normally open, thereby controlling the circuit between the battery 9 and the power source 4 to be turned off. The switch 10 is a micro switch 10, the control end 10.1 of the micro switch 10 is an elastic arm, a button is arranged below the elastic arm, the elastic arm is arranged opposite to the tail end of the connecting part 2.2, the first roller 2 moves in the second direction, the connecting part 2.2 abuts against the elastic arm, and abuts against the elastic arm so that the elastic arm presses the button, and the switch 10 can conduct the electrical connection between the battery 9 and the power source 4;

[0090] The first roller 2 moves in the first direction, the connecting portion 2.2 is disengaged from the elastic arm, and the elastic arm is resiliently reset so that the button cannot be pressed, and the switch 10 can cut off the electrical connection between the battery 9 and the power source 4.

[0091] A battery 9 cover is detachably connected to the inner side of the second roller 8. After the battery 9 cover is removed, the battery 9 accommodating space inside the housing 1 is exposed. The battery 9 is a dry cell 9, which is detachably placed in the accommodating space.

[0092] After the above improvements, the device has the characteristics of compact structure and stable and reliable operation.

[0093] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A dual-function knife sharpener, characterized in that: include: A housing (1), wherein the housing (1) is provided with a power source (4), and a rotatable first roller (2) and a bracket (3), wherein the first roller (2) and the bracket (3) are arranged along an axis A; The support (3) is provided with a grinding component (3.1), and the grinding component (3.1) has a grinding surface (3.11); A first clutch transmission unit is provided between the first roller (2) and the bracket (3), and an output end of the power source (4) is connected to the bracket (3) via a second clutch transmission unit; Manual mode: the first clutch transmission unit connects the first roller (2) and the bracket (3) in transmission, the second clutch transmission unit disconnects the bracket (3) from the output end of the power source (4), the first roller (2) moves along the surface of the base, and the bracket (3) is driven to rotate through the first clutch transmission unit, so that the grinding surface (3.11) rotates; Electric mode: the first clutch transmission unit disconnects the transmission of the first roller (2) and the bracket (3), the second clutch transmission unit connects the transmission of the bracket (3) and the output end of the power source (4), and the output end of the power source (4) rotates through the second clutch transmission unit to drive the bracket (3) to rotate, so that the grinding surface (3.11) rotates.

2. A dual-function knife sharpener according to claim 1, characterized in that: The bracket (3) is arranged at the front end of the first roller (2), and the first clutch transmission unit comprises a first keyway (3.2) arranged at the rear end of the bracket (3), and a second keyway (2.1) arranged at the front end of the first roller (2); The first roller (2) moves in a first direction, and after the first keyway (3.2) is engaged with the second keyway (2.1), the first roller (2) and the bracket (3) are in a transmission connection position, so as to lock the rotation of the bracket (3), and the first roller (2) drives the bracket (3) to rotate; The first roller (2) moves in the second direction, and after the first key groove (3.2) is disconnected from the second key groove (2.1), the first roller (2) and the bracket (3) are brought into a transmission disconnected position.

3. A dual-function knife sharpener according to claim 2, characterized in that: The second clutch transmission unit comprises a sleeve (5) arranged at the rear end of the bracket (3) and a transmission member (6) driven to rotate by the output end of the power source (4); the sleeve (5) and the transmission member (6) are arranged relative to each other, the sleeve (5) and the bracket (3) are interlocked in rotation, the sleeve (5) and the first roller (2) move along the axis A, and the sleeve (5) and the first roller (2) are arranged to rotate independently, the sleeve (5) and the first roller (2) are arranged at the rear end of the sleeve (5) and the transmission member (6) is arranged at the front end of the transmission member (6); The first roller (2) moves in a first direction, the first roller (2) and the bracket (3) obtain a transmission engagement position, the first roller (2) drives the sliding sleeve (5) to move in the first direction, the transmission groove (5.2) and the transmission block (6.1) are disengaged, and the transmission between the output end of the power source (4) and the bracket (3) is disconnected; The first roller (2) moves in the second direction, the first roller (2) and the bracket (3) obtain a transmission disconnection position, the first roller (2) drives the sliding sleeve (5) to move in the second direction, the transmission groove (5.2) and the transmission block (6.1) are disengaged, the output end of the power source (4) drives the transmission member (6) to rotate, and the transmission member (6) drives the bracket (3) to rotate through the transmission block (6.1) and the transmission groove (5.2).

4. A dual-function knife sharpener according to claim 3, characterized in that: The tail end of the first roller (2) is provided with a connecting portion (2.2), the bracket (3) is provided with a connecting shaft (3.3) which penetrates into the inner hole of the connecting portion (2.2), and the sliding sleeve (5) is placed in the inner hole of the connecting portion (2.2) and sleeved on the outer side of the connecting shaft (3.3); A second bearing seat (5.1) is embedded between the outer side of the sliding sleeve (5) and the inner hole of the connecting portion (2.2).

5. A dual-function knife sharpener according to claim 4, characterized in that: A first bearing seat (1.2) is provided on the outer shell (1), and the connecting portion (2.2) penetrates into the inner hole of the first bearing seat (1.2) and is connected to the inner hole of the first bearing seat (1.2).

6. A dual-function knife sharpener according to claim 5, characterized in that: The connecting portion (2.2) is provided with a radially movable steel ball (7), and an elastic member is abutted against the bottom of the steel ball (7), and the elastic member drives the steel ball (7) to elastically move radially; The first roller (2) moves along a first direction, and the inner hole of the first bearing seat (1.2) abuts against the steel ball (7), driving the steel ball (7) into the connecting portion (2.2); The first roller (2) moves in the second direction, the steel ball (7) moves out of the inner hole of the first bearing seat (1.2) and moves radially to the outside of the connecting portion (2.2), the steel ball (7) is located outside the inner hole of the first bearing seat (1.2), and forms a blocking fit with the first bearing seat (1.2) to limit the movement of the first roller (2) in the first direction.

7. A dual-function knife sharpener according to claim 3, characterized in that: The shell (1) is a long cylindrical structure, the first roller (2) is arranged at the front end of the shell (1), and the second roller (8) is also arranged at the rear end of the shell (1), and the first roller (2) and the second roller (8) are synchronously supported on the surface of the base.

8. The dual-function knife sharpener according to claim 1, characterized in that: The housing (1) between the first roller (2) and the second roller (8) is formed with a gripping portion by being recessed, and the diameter of the gripping portion is gradually increased from the inside to the outside.

9. The dual-function knife sharpener according to claim 1, characterized in that: The front end of the bracket (3) is provided with an assembly groove (3.4), and a magnetic attraction block (3.41) is provided on the bracket (3) corresponding to the assembly groove (3.4); the grinding surface (3.11) is provided at the front end of the grinding component (3.1); the rear end of the grinding component (3.1) is placed in the assembly groove (3.4), and the grinding component (3.1) can be magnetically positioned by the magnetic attraction block (3.41).

10. The dual-function knife sharpener according to claim 1, characterized in that: A battery (9) and a switch (10) are arranged in the housing (1). The battery (9) is electrically connected to the power source (4) via the switch (10). The control end (10.1) of the switch (10) is arranged opposite to the tail of the first roller (2). When the first roller (2) moves in the second direction, the tail has a position that abuts against the control end (10.1) of the switch (10), so that the control end (10.1) is closed, thereby controlling the circuit between the battery (9) and the power source (4) to be turned on. When the first roller (2) moves in the first direction, the tail has a position that is out of abutment with the control end (10.1) of the switch (10), so that the control end (10.1) is normally open, thereby controlling the circuit between the battery (9) and the power source (4) to be turned off.

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