Knife sharpener

Abstract

The invention discloses a knife sharpener which comprises a shell, and a knife sharpening part, a driving part and a response assembly are arranged on the shell; the driving piece can rotate; the response component is provided with an output unit; the cutter sharpening part is hinged to the output unit, and the cutter sharpening part is provided with a sharpening surface capable of being in contact with a cutter edge; the response assembly responds to the movement of the driving part, and when the driving part moves, an ascending or descending movement track is output through the output unit; the shell is further provided with a guide surface, the guide surface is inclined to the movement track of the cutter grinding part, the cutter grinding part is in continuous contact with the guide surface, and in the ascending or descending movement track of the cutter grinding part, the cutter grinding part is driven by the guide effect of the guide surface to deflect so as to change the included angle between the grinding surface and the cutting edge; the knife sharpener has the beneficial effects of being high in applicability, simple in structure and reliable in operation, and relates to the technical field of knife sharpeners.

Description

Technical Field

[0001] The present invention relates to the technical field of knife sharpeners, and more specifically to a knife sharpener. Background Art

[0002] The traditional knife sharpening process is to rub the blade back and forth on the whetstone to achieve sharpening. The process is relatively cumbersome and requires high proficiency.

[0003] Therefore, some manual and electric knife sharpeners have emerged. The knife sharpener has a preset angle whetstone, and after the blade contacts the whetstone, the blade is sharpened by pulling the knife back and forth.

[0004] However, the above-mentioned knife sharpener has certain defects: for example, the angle of the whetstone is not easy to adjust, and it has poor adaptability to different knives and cannot meet the grinding needs of various knives. Summary of the invention

[0005] In view of the shortcomings and defects of the prior art, a knife sharpener with high applicability, simple structure and reliable operation is provided.

[0006] A knife sharpener, comprising:

[0007] A housing, wherein a sharpening portion, a driving member, and a response component are disposed on the housing;

[0008] The response component has an output unit;

[0009] The grinding part is hinged on the output unit, and the grinding part has a grinding surface for contact with a blade;

[0010] The response component responds to the movement of the driving member, and when the driving member moves, outputs an ascending or descending motion trajectory through the output unit;

[0011] The housing is also provided with a guide surface, which is inclined to the movement track of the grinding part.

[0012] The grinding part is in continuous contact with the guide surface. In the upward or downward motion trajectory of the grinding part, the grinding part is driven by the guiding effect of the guide surface to deflect, so as to change the angle between the grinding surface and the blade.

[0013] After adopting the above structure, the knife sharpener of the present invention has the following advantages compared with the prior art: when in use, the movement of the driving member can make the output unit output an upward or downward motion trajectory, and the conveying unit drives the sharpening part to move upward or downward. Under the action of the guide surface, the sharpening part rotates to adjust the angle of the sharpening surface, so that the sharpening surface and the blade are more effectively fitted, the wear of the blade is reduced, and the sharpening effect is improved.

[0014] For example: for some knives that need to be sharpened at a smaller angle, the grinding portion rotates inward (in this application, with the blade as the center, the position close to the blade is the inner side, and the position away from the blade is the outer side), and the angle between the grinding surface and the tool body is smaller; for some knives that need to be sharpened at a larger angle, the grinding portion rotates outward, and the angle between the grinding surface and the tool body is larger.

[0015] After the above improvements, it can meet the grinding requirements of different types of tools, and the number of parts required in the transmission structure is less. It has the characteristics of simple structure, relatively low cost, reliable operation and long service life.

[0016] As an improvement of the present invention, the grinding surface is arranged on the inner side of the grinding portion;

[0017] The guide surface is gradually inclined outward from top to bottom;

[0018] The outer side of the grinding portion is in contact with the guide surface;

[0019] In the upward motion trajectory of the grinding part, the grinding part is driven by the guiding action of the guide surface to deflect inwardly so as to reduce the angle between the grinding surface and the blade;

[0020] In the downward movement trajectory of the grinding part, the grinding part is driven by the guiding action of the guide surface to deflect outwards so as to increase the angle between the grinding surface and the blade.

[0021] As an improvement of the present invention, there are two grinding parts, which are respectively hinged on the output unit, and a blade placement groove for the blade to enter is formed between the grinding surfaces of the two grinding parts.

[0022] As an improvement of the present invention, the two grinding parts are independently matched with guide surfaces, and in the movement trajectory of the output unit rising or falling, the two grinding parts are deflected synchronously.

[0023] As an improvement of the present invention, the grinding surfaces of the two grinding parts are arranged in a front-to-back staggered structure so that the bottom of the knife groove tends to the negative gap.

[0024] As an improvement of the present invention, the grinding portion is connected to an elastic member, and the elastic member drives the grinding portion to have a tendency to deflect outwards, so that the grinding portion is in continuous contact with the guide surface.

[0025] As an improvement of the present invention, the output unit is provided with a first transmission surface, and the height of the first transmission surface is an inclined structure with a lower left side and a higher right side;

[0026] The response component includes a response member, the response member is provided with a second transmission surface, and the height of the second transmission surface is an inclined structure with a lower left side and a higher right side;

[0027] The first transmission surface and the second transmission surface are arranged in a structure in which the first transmission surface and the second transmission surface are in contact with each other up and down;

[0028] The driving member is in transmission connection with the response member, and when the driving member rotates, it drives the response member to move leftward or rightward to change the contact position between the second transmission surface and the first transmission surface, thereby driving the output unit to rise or fall.

[0029] As an improvement of the present invention, the response member is provided with a guide groove, the guide groove is arranged parallel to the second transmission surface, the output unit is provided with a guide block, the guide block is arranged parallel to the first transmission surface, and the guide block fits with the guide groove.

[0030] As an improvement of the present invention, the driving member is provided with a gear, and the responding member is provided with a rack meshing with the gear.

[0031] As an improvement of the present invention, a slide groove extending up and down is provided on the shell, and the output unit fits in the slide groove to maintain the upward or downward movement trajectory of the output unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic structural diagram of the first embodiment of the present invention.

[0033] Figure 2 The present invention Figure 1 A schematic diagram of the enlarged structure in the middle.

[0034] Figure 3 It is a schematic structural diagram of a driving member, a response component and a grinding portion in the first embodiment of the present invention.

[0035] Figure 4 The present invention Figure 3 Schematic diagram of the structure of the components in the exploded state.

[0036] Figure 5 It is a schematic diagram of the structure of the response member in the first embodiment of the present invention.

[0037] Figure 6 It is a schematic diagram of the structure of the output unit and the grinding part of the present invention.

[0038] Figure 7 It is a schematic diagram of the structure of the output unit and the grinding part of the present invention in the exploded state of the parts.

[0039] Figure 8 It is a schematic structural diagram of the second embodiment of the present invention.

[0040] Fig. 9 It is a schematic structural diagram of the first embodiment of the present invention with the driving member partially removed.

[0041] Fig.10 The present invention Figure 8 Enlarged schematic diagram of the structure at point B in the middle.

[0042] As shown in the figure: 1. Shell; 1.1. Slide groove; 2. Grinding part; 2.1. Grinding surface; 2.11. Knife groove; 3. Driving member; 3.1. Gear; 3.2. Positioning groove; 4. Response component; 4.1. Output unit; 4.11. First transmission surface; 4.12. Guide block; 4.13. Base; 4.131. Connecting part; 4.14. Limit seat; 4.141. Buckle structure; 4.2. Response member; 4.21. Second transmission surface; 4.22. Guide groove; 4.23. Rack; 5. Guide surface; 6. Elastic member; 7. Fixed-angle sharpening structure; 7.1. Sharpening rod; 8. Shaft; 8.1. Elastic pin. DETAILED DESCRIPTION

[0043] See also Figure 1-7 As shown, a knife sharpener comprises:

[0044] A housing 1, on which a sharpening portion 2, a driving member 3, and a response component 4 are arranged;

[0045] The response component 4 has an output unit 4.1;

[0046] The sharpening part 2 is hinged on the output unit 4.1, and the sharpening part 2 has a sharpening surface 2.1 for contact with the blade;

[0047] The response component 4 responds to the movement of the driving member 3, and when the driving member 3 moves, outputs the rising or falling movement trajectory through the output unit 4.1;

[0048] The housing 1 is also provided with a guide surface 5, which is inclined to the movement track of the grinding part 2.

[0049] The grinding part 2 is in continuous contact with the guide surface 5. In the upward or downward movement trajectory of the grinding part 2, the grinding part 2 is driven by the guiding effect of the guide surface 5 to deflect, so as to change the angle between the grinding surface 2.1 and the blade.

[0050] When in use, the movement of the driving member can make the output unit output an upward or downward motion trajectory, and the conveying unit drives the grinding part to move upward or downward. Under the action of the guide surface, the grinding part rotates to adjust the angle of the grinding surface, so that the grinding surface and the blade are more effectively fitted, reducing the wear on the blade and improving the sharpening effect.

[0051] For example: for some knives that need to be sharpened at a smaller angle, the grinding portion 2 rotates inward (in this application, with the blade as the center, the position close to the blade is the inner side, and the position away from the blade is the outer side), and the angle between the grinding surface 2.1 and the tool body is smaller; for some knives that need to be sharpened at a larger angle, the grinding portion 2 rotates outward, and the angle between the grinding surface 2.1 and the tool body is larger.

[0052] After the above improvements, it can meet the grinding requirements of different types of tools, and the number of parts required in the transmission structure is less. It has the characteristics of simple structure, relatively low cost, reliable operation and long service life.

[0053] See also Figure 1-3 As shown, the grinding surface 2.1 is arranged on the inner side of the grinding part 2;

[0054] The guide surface 5 is gradually inclined outward from top to bottom;

[0055] The outer side of the grinding portion 2 is in contact with the guide surface 5;

[0056] After the guide surface 5 adopts the above-mentioned structural arrangement,

[0057] In the upward motion trajectory of the grinding part 2, the grinding part 2 is driven by the guiding action of the guide surface 5 to deflect inwards, so as to reduce the angle between the grinding surface 2.1 and the blade;

[0058] During the downward movement of the grinding part 2, the grinding part 2 is driven by the guiding action of the guide surface 5 to deflect outwards, so as to increase the angle between the grinding surface 2.1 and the blade.

[0059] The guide surface 5 may also be arranged to be gradually inclined inward from top to bottom;

[0060] In this embodiment: in the upward motion trajectory of the grinding part 2, the grinding part 2 is driven to deflect outward by the guiding effect of the guide surface 5 to increase the angle between the grinding surface 2.1 and the blade;

[0061] During the downward movement of the grinding part 2, the grinding part 2 is driven by the guiding action of the guide surface 5 to deflect inwards, so as to reduce the angle between the grinding surface 2.1 and the blade.

[0062] See also Figure 1-4 As shown, there are two grinding parts 2, which are respectively hinged on the output unit 4.1, and a knife groove 2.11 for the knife blade to enter is formed between the grinding surfaces 2.1 of the two grinding parts 2.

[0063] When sharpening the knife, place the bottom of the blade downward into the knife groove 2.11. The knife groove 2.11 is in a "V" shape. The gap at the bottom of the knife groove 2.11 is very small, so that the grinding surface 2.1 and the side of the blade can be better fitted.

[0064] The sharpening surfaces 2.1 are distributed on both sides of the blade, and the blades on both sides can be sharpened without changing the direction of the blade, thereby reducing the sharpening operation time and providing a better user experience.

[0065] The two grinding parts 2 are independently matched with guide surfaces 5, and in the movement trajectory of the output unit 4.1 rising or falling, the two grinding parts 2 are deflected synchronously.

[0066] The two guide surfaces 5 are arranged in a nearly symmetrical structure, and the distance between the positions of the two guide surfaces 5 close to the upper end is smaller than the distance between the positions close to the lower end;

[0067] When the output unit 4.1 rises, the two grinding parts 2 are deflected synchronously and at the same deflection angle, so that the contact area between the grinding surface 2.1 and the side surface of the blade is consistent, thereby making the grinding effect of the two sides of the blade uniform.

[0068] See also Figure 1-5 As shown, the grinding surfaces 2.1 of the two grinding parts 2 are arranged in a front-to-back staggered structure so that the bottom of the knife groove 2.11 tends to the negative gap.

[0069] In the conventional "V"-shaped knife groove 2.11, the left and right opposite grinding surfaces 2.1 form a gap near the bottom. If the blade is thin, after entering the bottom of the knife groove 2.11, the two side surfaces of the blade cannot maintain uniform contact with the two grinding surfaces 2.1, and the grinding effects on the two side surfaces of the blade are inconsistent. During the sharpening operation, problems such as over-grinding and under-grinding may occur, resulting in poor sharpening effect.

[0070] In the present application, the grinding surface 2.1 is arranged in a front-to-back staggered structure so that the bottom of the blade groove 2.11 tends to the negative gap. Even if a very thin blade enters the blade groove 2.11, both sides of the blade can maintain effective and uniform contact with the grinding surface 2.1, so that the grinding effect on both sides of the blade is consistent.

[0071] The grinding portion 2 is connected to an elastic member 6 , which drives the grinding portion 2 to have a tendency to deflect outwards, so that the grinding portion 2 is in continuous contact with the guide surface 5 .

[0072] The elastic member 6 can be a torsion spring, which is pre-tightened and connected to the two grinding parts 2, one of the top stop ends of the torsion spring is stopped on the left grinding part 2, and the other top stop end of the torsion spring is stopped on the right grinding part 2;

[0073] After the above improvement, the torsion spring with a simple and compact structure is stopped on the two grinding parts 2, driving the two grinding parts 2 to always have an outward deflection torque, thereby maintaining effective contact between the grinding parts 2 and the guide surface 5, making the movement trajectory of the grinding parts 2 linear and highly stable.

[0074] See also Figure 4-7 As shown, the output unit 4.1 is provided with a first transmission surface 4.11, and the height of the first transmission surface 4.11 is an inclined structure with a lower left side and a higher right side;

[0075] The response component 4 includes a response member 4.2, and the response member 4.2 is provided with a second transmission surface 4.21, and the height of the second transmission surface 4.21 is an inclined structure with a lower left side and a higher right side;

[0076] The first transmission surface 4.11 and the second transmission surface 4.21 are arranged in a vertically contacting relationship;

[0077] The driving member 3 is in transmission connection with the response member 4.2, and when the driving member 3 rotates, it drives the response member 4.2 to move leftward or rightward, so as to change the contact position between the second transmission surface 4.21 and the first transmission surface 4.11, thereby driving the output unit 4.1 to rise or fall. The second transmission surface 4.21 is arranged on the left side of the response member 4.2;

[0078] When the driving member 3 rotates, it drives the responding member 4.2 to move left or right;

[0079] When the response member 4.2 moves to the left, the higher part of the first transmission surface 4.11 gradually contacts the lower part of the second transmission surface 4.21, and the heights of the two are superimposed and increased, thereby driving the connecting seat to move upward.

[0080] When the response member 4.2 moves to the right, the lower part of the first transmission surface 4.11 gradually contacts the higher part of the second transmission surface 4.21, and the heights of the two are superimposed and reduced, thereby driving the connecting seat to move downward.

[0081] After the above improvements, the response component 4 requires very few parts and has the characteristics of simple and compact structure, which is conducive to the miniaturization of the knife sharpener and makes the operation of the knife sharpener highly reliable. Figure 6-7 As shown, the response member 4.2 is provided with a guide groove 4.22, which is arranged parallel to the second transmission surface 4.21, and the output unit 4.1 is provided with a guide block 4.12, which is arranged parallel to the first transmission surface 4.11, and the guide block 4.12 is matched with the guide groove 4.22.

[0082] After the above improvement, the first transmission surface 4.11 and the second transmission surface 4.21 are used in combination to play a double guiding role, making the movement process of the output unit 4.1 more stable and reliable.

[0083] As an improvement of the present invention, the driving member 3 is provided with a gear 3.1, and the responding member 4.2 is provided with a rack 4.23 meshing with the gear 3.1.

[0084] The driving member 3 is arranged on the right side of the responding member 4.2 and leaks out from the upper center of the housing for manual operation by the user.

[0085] The gear 3.1 on the driving member 3 is directly driven by the rack 4.23 on the right side of the responding member 4.2, which has the characteristics of simple transmission structure and stable and reliable operation;

[0086] Of course, several stages of transmission gears 3.1 may also be arranged between the rack 4.23 and the gear 3.1 to form a transmission connection.

[0087] See also Figure 7 ,as well as Fig. 9 As shown, a slide groove 1.1 extending up and down is provided on the housing 1, and the output unit 4.1 fits in the slide groove 1.1 to maintain the upward or downward movement trajectory of the output unit 4.1.

[0088] After the above improvements, the movement of the output unit 4.1 is stable and reliable.

[0089] Please refer to the attached drawings, the output unit 4.1 includes a base 4.13 and a limit seat 4.14 connected to the front of the base, and both sides of the limit seat 4.14 are detachably connected to the base 4.13 through a buckle structure 4.141;

[0090] The base 4.13 and the lower part of the limit seat 4.14 respectively form a first transmission surface 4.11, and the two first transmission surfaces 4.11 are arranged on the same plane, and can be matched with the second transmission surface 4.21 respectively, so that the matching stability is further improved;

[0091] The base 4.13 fits into the slide groove 1.1, and a connecting portion 4.131 is provided at the bottom of the base 4.13, and a guide block 4.12 is provided inside the connecting portion 4.131;

[0092] The base 4.13 and the upper inner side of the limit seat 4.14 form a receiving space for the bottom of the grinding part 2 to be placed. A pin is passed through the bottom of the grinding part 2, and the pin is fixed to the receiving space;

[0093] After the above improvements, the output unit 4.1 adopts a detachable structural design, and the user can replace the grinding part 2 after disassembly, which is conducive to the maintenance of the device. The structural layout is more reasonable, which can make the occupied space smaller and is conducive to the miniaturization of the device.

[0094] The housing 1 is also provided with a guide groove for guiding the response member 4.2, which plays a role in maintaining the left and right movement of the response member.

[0095] The housing 1 is also provided with a fixed-angle sharpening structure 7, which includes a sharpening rod 7.1 arranged in a "V" shape.

[0096] The housing 1 is provided with a fixed angle sharpening structure 7, which can be used by the user to sharpen the knife at a fixed angle, thus enriching the functionality of the device;

[0097] The driving member 3 in the present application is sleeved on the shaft body 8 inside the housing 1. A locking structure is also provided between the shaft body 8 and the driving member 3. The locking structure includes an elastic pin 8.1 provided on the shaft body 8. The elastic pin 8.1 can elastically move radially.

[0098] The inner hole of the driving member 3 is provided with positioning grooves 3.2 distributed at intervals along the circumferential direction;

[0099] The elastic pin 8 . 1 enters the positioning groove 3 . 2 to apply a locking force to the driving member 3 to lock the rotation of the driving member 3 .

[0100] The positioning groove 3.2 may correspond to a plurality of locking positions of the driving member 3, and each locking position corresponds to a certain inclination angle of the grinding surface 2.1.

[0101] At the same time, the cooperation between the positioning groove 3.2 and the elastic pin 8.1 also gives the rotation of the driving member 3 a rotation feel, thereby improving the user experience.

[0102] The above structure is the first embodiment of the present application. In the first embodiment, the driving member 3 uses the rotation output torque as the driving source, drives the response member 4.2 to move through the gear structure, so that the output unit 4.1 drives the grinding part 2 to move upward or downward, and under the action of the guide surface 5, drives the grinding part 2 to deflect, thereby adjusting the angle;

[0103] See also Figure 8 As shown, the present application also has a second embodiment. In the second embodiment, the driving member 3 uses the lateral movement output torque as the driving source. In this embodiment, the driving member 3 is connected to the right end of the response member 4.2 and is arranged to follow the response member 4.2. If the angle between the sharpening part 2 and the blade needs to be adjusted, the driving member 3 can be operated to move laterally, so that it directly drives the response member 4.2 to move laterally, and then the output unit 4.1 drives the sharpening part 2 to move upward or downward. Under the action of the guide surface 5, the sharpening part 2 is driven to deflect, and the angle can be adjusted. Compared with the first embodiment, the structural arrangement of the second embodiment is more compact and simple, and the reliability of the device is further improved.

[0104] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A knife sharpener, characterized in that: include: A housing (1), wherein a sharpening portion (2), a driving member (3), and a response component (4) are provided on the housing (1); The response component (4) has an output unit (4.1); The grinding part (2) is hinged on the output unit (4.1), and the grinding part (2) has a grinding surface (2.1) for contact with a blade; The response component (4) responds to the movement of the driving member (3), and when the driving member (3) moves, outputs an ascending or descending movement trajectory through the output unit (4.1); The housing (1) is also provided with a guide surface (5), and the guide surface (5) is inclined to the movement track of the grinding part (2). The grinding portion (2) is in continuous contact with the guide surface (5); in the upward or downward movement trajectory of the grinding portion (2), the grinding portion (2) is driven by the guiding action of the guide surface (5) to deflect, so as to change the angle between the grinding surface (2.1) and the blade.

2. A knife sharpener according to claim 1, characterized in that: The grinding surface (2.1) is arranged on the inner side of the grinding part (2); The guide surface (5) is arranged to be gradually inclined outward from top to bottom; The outer side of the grinding portion (2) is in contact with the guide surface (5); In the upward movement trajectory of the blade grinding portion (2), the blade grinding portion (2) is driven by the guiding action of the guide surface (5) to deflect inwardly so as to reduce the angle between the grinding surface (2.1) and the blade; In the downward movement trajectory of the blade grinding portion (2), the blade grinding portion (2) is driven to deflect outwards by the guiding action of the guide surface (5) so as to increase the angle between the grinding surface (2.1) and the blade.

3. A knife sharpener according to claim 1, characterized in that: There are two blade grinding parts (2), the two blade grinding parts (2) are respectively hinged on the output unit (4.1), and a blade placement groove (2.11) for the blade to enter is formed between the grinding surfaces (2.1) of the two blade grinding parts (2).

4. A knife sharpener according to claim 3, characterized in that: The two grinding parts (2) are independently matched with guide surfaces (5), and in the upward or downward movement trajectory of the output unit (4.1), the two grinding parts (2) are deflected synchronously.

5. A knife sharpener according to claim 3, characterized in that: The grinding surfaces (2.1) of the two grinding parts (2) are arranged in a front-to-back staggered structure so that the bottom of the blade groove (2.11) tends to the negative gap.

6. A knife sharpener according to claim 1, characterized in that: The grinding part (2) is connected to an elastic member (6), and the elastic member (6) drives the grinding part (2) to have a tendency to deflect outwards, so that the grinding part (2) is in continuous contact with the guide surface (5).

7. A knife sharpener according to claim 1, characterized in that: The output unit (4.1) is provided with a first transmission surface (4.11), and the height of the first transmission surface (4.11) is an inclined structure with a lower left side and a higher right side; The response component (4) comprises a response member (4.2), the response member (4.2) being provided with a second transmission surface (4.21), the height of the second transmission surface (4.21) being an inclined structure with a lower left side and a higher right side; The first transmission surface (4.11) and the second transmission surface (4.21) are arranged in a structure in which they fit together vertically; The driving member (3) is in transmission connection with the response member (4.2), and when the driving member (3) rotates, it drives the response member (4.2) to move leftward or rightward, so as to change the contact position between the second transmission surface (4.21) and the first transmission surface (4.11), thereby driving the output unit (4.1) to rise or fall.

8. A knife sharpener according to claim 7, characterized in that: The response member (4.2) is provided with a guide groove (4.22), and the guide groove (4.22) is arranged in parallel with the second transmission surface (4.21); the output unit (4.1) is provided with a guide block (4.12), and the guide block (4.12) is arranged in parallel with the first transmission surface (4.11), and the guide block (4.12) is matched with the guide groove (4.22).

9. A knife sharpener according to claim 7, characterized in that: The driving member (3) is provided with a gear (3.1), and the responding member (4.2) is provided with a rack (4.23) meshing with the gear (3.1).

10. The knife sharpener according to claim 1, characterized in that: The housing (1) is provided with a sliding groove (1.1) extending up and down, and the output unit (4.1) fits into the sliding groove (1.1) to maintain the upward or downward movement trajectory of the output unit (4.1).

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