Knife sharpener with movable knife sharpening piece

Abstract

The utility model provides a knife sharpener with a movable knife sharpening piece. The knife sharpener with the movable knife sharpening piece comprises a shell, the left side face and the bottom of the shell are planes, a sliding block capable of moving up and down in a reciprocating mode is arranged on the side face of the shell, a sharpening piece base is detachably arranged on the outer side face of the sliding block, and a sharpening piece is arranged on the outer side face of the sharpening piece base. According to the knife sharpener with the movable knife sharpening piece, the idler wheel makes contact with the table top to achieve rotation, the sliding block is driven by the transmission mechanism to move up and down in a reciprocating mode, and in the grinding process in the length direction of a knife edge, the knife sharpening piece moves back and forth along with the knife sharpening piece and moves up and down in a reciprocating mode. All positions of the sharpening blade are in uniform contact with the cutter to polish the cutting edge of the cutter, so that the sharpening blade is uniformly abraded, and the situation that normal sharpening is affected due to the fact that the sharpening blade is locally abraded seriously and sunken when the sharpening blade is abraded only at a fixed position is avoided; and the sharpening base can be detached from the sliding block, and when the sharpening blade is seriously abraded, the sharpening blade can be conveniently replaced.

Description

Technical Field

[0001] The utility model relates to the field of knife sharpeners, in particular to a knife sharpener with a movable knife sharpening member. Background Art

[0002] Knives exist in every household's kitchen. Every day, knives are used for cooking. However, the knives used every day will have different degrees of setbacks due to wear and tear. For different degrees of setbacks of knives, people usually sharpen them. Knives are generally sharpened with whetstones or sharpeners. Common sharpeners generally have a sharpening groove on the sharpening seat, and the cutting edge of the knife is extended into the sharpening groove for reciprocating friction for sharpening.

[0003] However, the structure of this knife sharpener is relatively simple, and it can only sharpen at a fixed position of the knife blade. After long-term use, the sharpening position of the knife blade gradually wears out, forming a depression, which affects the sharpening effect. In addition, the knife blade is not easy to replace, and it is impossible to replace a new knife blade or a knife blade with a different sharpening effect. There are some shortcomings in use.

[0004] Therefore, it is necessary to provide a knife sharpener with a movable knife sharpening member to solve the above-mentioned technical problems. Summary of the invention

[0005] The utility model provides a knife sharpener with a movable knife sharpening part, which solves the problem that the existing knife sharpener can only sharpen at a fixed position of the knife sharpening blade, after long-term use, the sharpening position of the knife sharpening blade gradually wears out and forms a dent, affecting the sharpening effect, and the knife sharpening blade is inconvenient to replace.

[0006] In order to solve the above technical problems, the utility model provides a knife sharpener with a movable knife sharpening member, comprising a shell, the left side surface and the bottom of the shell are flat, a sliding block that can reciprocate up and down is arranged on the side surface of the shell, a grinding plate seat is detachably arranged on the outer side surface of the sliding block, and a grinding blade is arranged on the outer side surface of the grinding plate seat;

[0007] The shell is provided with an installation cavity inside, a roller with a lower edge extending to the bottom of the shell is provided in the installation cavity, and a transmission mechanism for driving the sliding block to reciprocate up and down through the roller is provided in the installation cavity.

[0008] Preferably, a movable groove is vertically opened on the left side surface of the shell, the sliding block is arranged in the movable groove to move up and down, and the movable groove is connected with the installation cavity.

[0009] Preferably, the transmission mechanism includes a first gear, an eccentric shaft and a second gear, the second gear is fixedly connected to the axis center of the roller surface, the first gear is rotatably arranged in the mounting cavity and meshes with the second gear, the eccentric shaft is eccentrically fixedly connected to the surface of the first gear, a fixed frame is provided at the bottom of the sliding block, and the eccentric shaft can movably extend into the fixed frame to drive the fixed frame to move up and down.

[0010] Preferably, the transmission mechanism also includes a fixed frame, a first support shaft and a second support shaft, the fixed frame is fixedly connected in the mounting cavity, the first support shaft and the second support shaft are laterally fixedly connected to the fixed frame in parallel with each other, the first gear is rotatably disposed on the first support shaft, and the roller is rotatably disposed on the second support shaft.

[0011] Preferably, a rolling ring for contacting the inner wall of the fixed frame is rotatably mounted on the eccentric shaft.

[0012] Preferably, a groove is provided on the outer side surface of the sliding block, a magnet block is arranged in the groove, and a pressing plate for pressing the magnet block is arranged on the outer side of the sliding block.

[0013] Preferably, a through hole is provided on the pressure plate at a position corresponding to the magnet, a protrusion is fixedly connected to the inner side surface of the grinding plate holder at a position corresponding to the through hole, and the protrusion passes through the through hole and is attracted by the magnet block.

[0014] Compared with the related art, the knife sharpener with movable sharpening parts provided by the utility model has the following beneficial effects:

[0015] The utility model provides a knife sharpener with a movable sharpening member. When a driving device moves forward and backward to sharpen the knife, a roller contacts with a table surface to realize rotation, thereby driving a transmission mechanism to move, and driving a sliding block to reciprocate up and down through transmission. During the sharpening process along the length direction of the knife blade, the sharpening blade moves forward and backward with the device, and at the same time, reciprocates up and down, so that each position of the sharpening blade is evenly in contact with the tool to sharpen the tool edge, so that the sharpening blade is evenly worn, and sharpening at a fixed position will not cause serious local wear and depression of the sharpening blade, thereby affecting normal sharpening. Moreover, the sharpening seat can be disassembled from the sliding block, so that when the sharpening blade is seriously worn, the sharpening blade can be easily replaced, and sharpening blades with different sharpening effects can also be selected for use, so as to meet different usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the external structure of a knife sharpener with a movable knife sharpening member provided by the utility model;

[0017] Figure 2It is a schematic diagram of the structure decomposition of the utility model;

[0018] Figure 3 for Figure 2 The schematic diagram of the structure of the transmission mechanism and the sliding block shown;

[0019] Figure 4 for Figure 3 The schematic diagram of the structure of the transmission mechanism and the sliding block when they are assembled;

[0020] Figure 5 for Figure 1 The cross-sectional structural diagram is shown.

[0021] Figure 6 for Figure 1 Schematic diagram of the structure of the inner side of the grinding disc holder shown.

[0022] Numbers in the figure: 1, shell, 101, movable groove, 2, lower cover, 201, first air avoidance groove, 202, second air avoidance groove, 203, screw, 3, sliding block, 301, groove, 302, fixed frame, 4, grinding plate seat, 401, protrusion, 5, grinding blade, 6, pressing plate, 601, through hole, 602, mounting hole, 7, transmission mechanism, 701, fixed frame, 702, first support shaft, 703, first gear, 704, eccentric shaft, 705, rolling ring, 706, second support shaft, 707, roller, 708, second gear, 8, auxiliary wheel, 9, magnet block. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 ,in, Figure 1 A schematic diagram of the external structure of a knife sharpener with a movable knife sharpening member provided by the utility model; Figure 2 It is a schematic diagram of the structure decomposition of the utility model; Figure 3 for Figure 2 The schematic diagram of the structure of the transmission mechanism and the sliding block shown; Figure 4 for Figure 3 The schematic diagram of the structure of the transmission mechanism and the sliding block when they are assembled; Figure 5 for Figure 1 The cross-sectional structural diagram shown; Figure 6 for Figure 1 Schematic diagram of the structure of the inner side of the grinding disc holder shown.

[0025] The sharpener with movable sharpening member comprises a shell 1, the left side and bottom of the shell 1 are flat, a sliding block 3 which can reciprocate up and down is arranged on the side of the shell 1, a grinding plate seat 4 is detachably arranged on the outer side of the sliding block 3, and a grinding blade 5 is arranged on the outer side of the grinding plate seat 4.

[0026] The grinding disc seat 4 and the grinding blade 5 can be an integrated structure with fixed connection, that is, the grinding disc seat 4 is the mounting structure of the grinding blade 5. When the grinding blade 5 needs to be replaced, the two are removed together for replacement to achieve replacement of the grinding blade 5; the two can also be set to a detachable connection method such as snap-in, and the grinding blade 5 can be removed from the grinding disc seat 4 separately. When the grinding blade 5 needs to be replaced, the grinding disc seat 4 is removed, and then the grinding blade 5 is removed from the grinding disc seat 4, and a new grinding blade 5 is installed, and then the grinding disc seat 4 is installed on the sliding block 3 to achieve disassembly.

[0027] An installation cavity is provided inside the housing 1 , a roller 707 with a lower edge extending to the bottom of the housing 1 is provided in the installation cavity, and a transmission mechanism 7 is provided in the installation cavity for driving the sliding block 3 to reciprocate up and down through the roller 707 .

[0028] The axis of the roller 707 is horizontal, and it rolls in the front-to-back direction. When in use, the shell 1 is held by hand, and the bottom is placed on a flat surface such as a desktop or a tabletop, so that the bottom of the roller 707 contacts the tabletop, and the blade of the tool is placed horizontally in the front-to-back direction to fit with the grinding blade 5. When the driving device moves back and forth, the grinding blade 5 grinds the side of the cutting edge of the tool, and the roller 707 contacts the tabletop to rotate, thereby driving the transmission mechanism 7 to move, and the sliding block 3 is driven to reciprocate up and down through the transmission. During the grinding process along the length direction of the blade, the grinding blade 5 will reciprocate up and down while moving back and forth with the device, so that each position of the grinding blade 5 is evenly in contact with the tool, so that it is evenly worn, and it will not be sharpened only at a fixed position, resulting in severe local wear and depression of the grinding blade 5, which affects the normal sharpening.

[0029] The top of the housing 1 can be a curved surface, which is convenient for one-handed grasping and pushing forward and backward movement. The front and rear surfaces of the housing 1 can be provided with grasping grooves to facilitate grasping and prevent slipping.

[0030] A movable groove 101 is vertically formed on the left side of the housing 1 . The sliding block 3 is arranged in the movable groove 101 to move up and down. The movable groove 101 is connected to the installation cavity.

[0031] The movable groove 101 can guide and support the sliding block 3 so that it can only move in the vertical direction without offset or displacement.

[0032] The transmission mechanism 7 includes a first gear 703, an eccentric shaft 704 and a second gear 708. The second gear 708 is fixedly connected to the axis center of the surface of the roller 707. The first gear 703 is rotatably arranged in the installation cavity and meshes with the second gear 708. The eccentric shaft 704 is eccentrically fixedly connected to the surface of the first gear 703. A fixed frame 302 is arranged at the bottom of the sliding block 3. The eccentric shaft 704 can movably extend into the fixed frame 302 to drive the fixed frame 302 to move up and down.

[0033] When the first gear 703 rotates, it will drive the eccentric shaft 704 to make a circular motion with the axis of the first gear 703 as the center. The circular motion can be decomposed into two directions of motion: vertical and horizontal. Therefore, the eccentric shaft 704 will reciprocate horizontally in the fixed frame 302, and at the same time drive the fixed frame 302 to reciprocate up and down, thereby driving the sliding block 3 to reciprocate up and down, thereby driving the grinding blade 5 to reciprocate up and down relative to the shell 1.

[0034] When the housing 1 is held by hand and moved forward and backward, the roller 707 will continue to rotate forward and backward, thereby driving the second gear 708 to rotate, thereby driving the first gear 703 to rotate. The diameter of the second gear 708 is smaller than the diameter of the first gear 703, so that the rotation speed of the second gear 708 is appropriately reduced relative to the rotation speed of the roller 707, so that the speed of the grinding blade 5 moving up and down will not be too fast.

[0035] The transmission mechanism 7 also includes a fixed frame 701, a first support shaft 702 and a second support shaft 706. The fixed frame 701 is fixedly connected in the installation cavity. The first support shaft 702 and the second support shaft 706 are laterally fixedly connected to the fixed frame 701 in parallel with each other. The first gear 703 is rotatably arranged on the first support shaft 702, and the roller 707 is rotatably arranged on the second support shaft 706.

[0036] The fixing frame 701 can be fixedly installed in the installation cavity of the housing 1 by means of bolts, welding, etc., and is used to support the roller 707 and the first gear 703 . The first gear 703 and the roller 707 are both located outside the fixing frame 701 .

[0037] A rolling ring 705 for contacting the inner wall of the fixed frame 302 is rotatably mounted on the eccentric shaft 704 .

[0038] The eccentric shaft 704 is fixedly connected to the surface of the first gear 703. If it directly contacts the inner wall of the fixed frame 302, sliding friction will be generated, and the friction is relatively large, making the overall movement not smooth enough. A rolling ring 705 that can rotate relative to the eccentric shaft 704 is set. The rolling ring 705 contacts the inner wall of the fixed frame 302, and rolling friction is generated between the two. The friction force is smaller, no wear is caused, and the movement is smoother.

[0039] A groove 301 is formed on the outer side of the sliding block 3 , a magnet block 9 is disposed in the groove 301 , and a pressing plate 6 for pressing the magnet block 9 is disposed on the outer side of the sliding block 3 .

[0040] The pressing plate 6 is provided with a mounting hole 602 , and the sliding plate 3 is provided with a corresponding positioning hole. The pressing plate 6 is mounted on the sliding plate 3 by screws, and the magnet block 9 is pressed tightly into the groove 301 to prevent it from falling off.

[0041] A through hole 61 is provided on the pressure plate 6 at a position corresponding to the magnet block 9 , and a protrusion 401 is fixedly connected to the inner side surface of the grinding plate holder 4 at a position corresponding to the through hole 61 . The protrusion 401 passes through the through hole 61 and is attracted by the magnet block 9 .

[0042] The size of the through hole 61 is smaller than the size of the magnet block 9 , so as to prevent the magnet block 9 from falling out of the through hole 61 .

[0043] The protrusion 401 is made of metal and can be attracted by the magnet block 9. The grinding seat 4 is attached to the surface of the pressure plate 6 so that the protrusion 401 is just located in the through hole 61, and the inner end is attracted by the magnet block 9 to complete the installation of the grinding seat 4. When in use, the grinding blade 5 and the grinding seat 4 will only have vertical force and rightward squeezing force, so the grinding seat 4 will not fall off. The grinding seat 4 is installed magnetically. When the grinding blade 5 needs to be replaced, it is only necessary to pull and press the grinding seat 4 to the left to give it a force greater than the magnetic force of the magnet block 9, so that the grinding seat 4 can be disassembled and the grinding blade 5 can be replaced. The operation is simple and convenient.

[0044] A set of auxiliary wheels 8 are also provided at the bottom of the housing 1, and the bottom edge is flush with the roller 707, and the two work together to enable the housing 1 to move forward and backward smoothly.

[0045] The bottom of the shell 1 is mounted with a lower cover 2 by screws 203. The lower cover 2 is provided with a first avoidance groove 201 adapted to the roller 707 and a second avoidance groove 202 adapted to the auxiliary wheel 8, so that the roller 707 and the auxiliary wheel 8 can extend to the bottom of the shell 1 and contact the countertop or desktop.

[0046] The working principle of the knife sharpener with movable knife sharpening member provided by the utility model is as follows:

[0047] The shell 1 is held by hand, and the bottom is placed on a flat surface such as a desktop or a tabletop, so that the bottom of the roller 707 contacts the tabletop, and the blade part of the tool is placed horizontally in the front-to-back direction to fit with the grinding blade 5. When the driving device moves back and forth, the grinding blade 5 grinds the side of the cutting edge of the tool, and the roller 707 contacts the tabletop to rotate, thereby driving the second gear 708 to rotate, thereby driving the first gear 703 to rotate, and will drive the eccentric shaft 704 to make a circular motion with the axis of the first gear 703 as the center of the circle, driving the fixed frame 302 to reciprocate up and down, thereby driving the sliding block 3 to reciprocate up and down. During the process of the grinding blade 5 moving back and forth with the device, it will also reciprocate up and down, so that each position of the grinding blade 5 is evenly in contact with the tool, so that it is evenly worn, and it will not be sharpened only at a fixed position, resulting in severe local wear and depression of the grinding blade 5, which affects the normal sharpening.

[0048] Compared with the related art, the knife sharpener with movable sharpening parts provided by the utility model has the following beneficial effects:

[0049] When the driving device moves back and forth to sharpen the knife, the roller 707 contacts the table surface to rotate, thereby driving the transmission mechanism 7 to move, and the sliding block 3 is driven to reciprocate up and down through the transmission. During the grinding process along the length direction of the blade, the grinding blade 5 will reciprocate up and down while moving back and forth with the device, so that each position of the grinding blade 5 is evenly in contact with the tool to grind the tool edge, so that the grinding blade 5 is evenly worn, and the grinding blade 5 will not be only sharpened at a fixed position, resulting in severe local wear and depression of the grinding blade 5, which affects the normal sharpening; and the grinding seat 4 can be disassembled from the sliding block 3, and when the grinding blade 5 is severely worn, it is convenient to replace the grinding blade 5, and you can also choose to replace the grinding blade 5 with different sharpening effects to meet different usage requirements.

[0050] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A knife sharpener with a movable sharpening member, characterized in that: The invention comprises a shell (1), the left side surface and the bottom of the shell (1) are planes, a sliding block (3) which can reciprocate up and down is arranged on the side surface of the shell (1), a grinding plate seat (4) is detachably arranged on the outer side surface of the sliding block (3), and a grinding blade (5) is arranged on the outer side surface of the grinding plate seat (4); The shell (1) is provided with an installation cavity inside, the installation cavity is provided with a roller (707) whose lower edge extends to the bottom of the shell (1), and the installation cavity is provided with a transmission mechanism (7) which drives the sliding block (3) to reciprocate up and down through the roller (707).

2. The knife sharpener with a movable sharpening member according to claim 1, characterized in that: A movable groove (101) is vertically provided on the left side surface of the shell (1), the sliding block (3) is arranged in the movable groove (101) to move up and down, and the movable groove (101) is connected to the installation cavity.

3. The knife sharpener with a movable sharpening member according to claim 1, characterized in that: The transmission mechanism (7) comprises a first gear (703), an eccentric shaft (704) and a second gear (708); the second gear (708) is fixedly connected to the axis of the surface of the roller (707); the first gear (703) is rotatably arranged in the mounting cavity and meshes with the second gear (708); the eccentric shaft (704) is eccentrically fixedly connected to the surface of the first gear (703); a fixed frame (302) is arranged at the bottom of the sliding block (3); the eccentric shaft (704) can movably extend into the fixed frame (302) to drive the fixed frame (302) to move up and down.

4. The knife sharpener with a movable sharpening member according to claim 3, characterized in that: The transmission mechanism (7) further comprises a fixed frame (701), a first support shaft (702) and a second support shaft (706); the fixed frame (701) is fixedly connected in the installation cavity; the first support shaft (702) and the second support shaft (706) are laterally fixedly connected to the fixed frame (701) in parallel with each other; the first gear (703) is rotatably arranged on the first support shaft (702); and the roller (707) is rotatably arranged on the second support shaft (706).

5. The knife sharpener with a movable sharpening member according to claim 3, characterized in that: A rolling ring (705) for contacting the inner wall of the fixed frame (302) is rotatably sleeved on the eccentric shaft (704).

6. The knife sharpener with a movable sharpening member according to claim 1, characterized in that: A groove (301) is provided on the outer surface of the sliding block (3), a magnet block (9) is arranged in the groove (301), and a pressing plate (6) for pressing the magnet block (9) is provided on the outer side of the sliding block (3).

7. The knife sharpener with a movable sharpening member according to claim 6, characterized in that: A through hole (61) is provided on the pressure plate (6) at a position corresponding to the magnet block (9); a protrusion (401) is fixedly connected to the inner side surface of the grinding plate holder (4) at a position corresponding to the through hole (61); the protrusion (401) passes through the through hole (61) and is attracted by the magnet block (9).

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