Knife sharpener suitable for scissor sharpening operation

Abstract

The utility model relates to the technical field of knife sharpeners, and particularly discloses a knife sharpener suitable for scissor sharpening operation, which comprises a handle, a knife sharpener, a knife sharpener, a knife sharpener handle and a knife sharpener, the rotating seat is arranged in the accommodating cavity and can rotate around an axis A; the grinding components are arranged in the circumferential direction of the rotating seat at intervals; a notch is formed in the handle along the rotating path of the sharpening component, and at least one sharpening surface of the sharpening component can be exposed out of the notch; the transmission gear ring is arranged on the rotating seat and is coaxial with the rotating seat; the knob is rotatably arranged on the handle, and a gear meshed with the transmission gear ring is arranged on the knob; by rotating the knob, the gear drives the rotating seat to rotate, so that the grinding component is circularly switched to be exposed from the notch; the scissor grinding device has the advantages of meeting the scissor grinding requirement, reducing the scissor grinding operation difficulty and being compact in structure.

Description

Technical Field

[0001] This utility model relates to the field of knife sharpener technology, and more specifically to a knife sharpener suitable for sharpening scissors. Background Technology

[0002] Existing sharpening tools for scissors typically only provide a single sharpening effect, which is inconvenient for users. They cannot sharpen both sides of the scissor blade simultaneously, and the sharpening angle and grit are fixed, failing to meet users' diverse sharpening needs for different knife blades.

[0003] Furthermore, traditional knife sharpeners for scissor sharpening are relatively complex in structure, inconvenient to operate, and lack flexibility in replacing and switching sharpening components, thus limiting their applicability. Therefore, there is a need for a knife sharpener that integrates multiple sharpening functions, has a compact structure, and is easy to operate, suitable for scissor sharpening. Utility Model Content

[0004] To address the shortcomings and defects of existing technologies, a knife sharpener is provided that meets the needs of scissor sharpening, reduces the difficulty of scissor sharpening operations, and has a compact structure.

[0005] A knife sharpener suitable for sharpening scissors includes:

[0006] A handle having a hollow receiving cavity;

[0007] A rotating base, which is disposed within the accommodating cavity and can rotate about axis A;

[0008] Several grinding components are spaced apart along the circumference of the rotating base. Each grinding component has two grinding surfaces, which are set at an angle to form a blade groove for one of the blade arms of the scissors to enter.

[0009] The handle has a slot along the rotation path of the grinding component, and the slot can expose at least one tool holder of the grinding component;

[0010] A transmission gear ring, which is mounted on a rotating base and coaxial with the rotating base;

[0011] A knob, rotatably mounted on a handle, is provided with a gear that meshes with a transmission gear ring;

[0012] By turning the knob, the gear drives the rotating base to rotate, thereby cyclically switching the exposure of the grinding parts from the slot.

[0013] With the above structure, the knife sharpener of this utility model, suitable for scissor sharpening, has the following advantages compared with the prior art:

[0014] Turning the knob rotates the rotary table, allowing the tool slot to protrude from the slot opening to control its position.

[0015] Place the blade of one arm of the scissors into the blade holder groove. The two sides of the scissor blade can fit against the grinding surface, allowing one arm of the scissors to move back and forth in the blade holder groove, which can grind the blade of the scissors. This reduces the difficulty of scissor grinding operations. In addition, the structure is simpler and has fewer parts, which reduces costs.

[0016] The structure reduces the number of parts in the scissor drive, thus lowering costs.

[0017] As an improvement of this utility model, the grinding surfaces of multiple grinding components are arranged at different angles to form tool grooves with different angles.

[0018] As an improvement of this utility model, the rotating base is formed by two circular support structures spliced ​​together along axis A.

[0019] The grinding component is installed between two supports, and the supports are provided with a through-hole relief groove. The blade placement groove is located inside the relief groove and is designed to be through-hole.

[0020] As an improvement of this utility model, the rear bracket has a connecting hole along the axial direction, the handle is provided with a connecting shaft, the connecting shaft extends into the connecting hole, and the connecting shaft is provided with a plurality of radially elastic support members; the inner wall of the connecting hole is provided with a plurality of positioning grooves distributed circumferentially, and the support members can elastically enter and exit the positioning grooves.

[0021] As an improvement of this utility model, the front bracket is provided with a shaft portion extending axially forward, and the gear ring is arranged around the shaft portion.

[0022] As an improvement of this utility model, the rotating base is provided with multiple slots spaced apart along the circumference, and the handle is provided with at least one movable pin along the movement trajectory of the slots; when the rotating base rotates to the position of the slot and the pin, the pin moves to enter the slot to lock the rotation of the rotating base, and when the pin moves to move out of the slot, the rotating base can rotate.

[0023] As an improvement of this utility model, the handle is provided with a lever extending to the left and right, the middle position of the lever is hinged to the handle, the pin is provided at the front end of the lever, the tail end of the lever is abutted against the handle, and the handle is provided with a button, which is abutted against the tail end of the lever. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 This is a schematic diagram of the structure of this utility model after the housing at the front of the handle is hidden.

[0026] Figure 3 This is a schematic diagram of the structure of this utility model after the handle is hidden.

[0027] Figure 4 This is a schematic diagram showing the cooperation between the support member on the connecting shaft and the positioning groove of this utility model.

[0028] Figure 5 This is a partial cross-sectional view of the structure of this utility model.

[0029] Figure 6 This is the utility model Figure 5 Enlarged schematic diagram of the structure at point B.

[0030] Figure 7 This is a schematic diagram illustrating an embodiment of the present invention.

[0031] The figure shows: 1. Handle; 1.1. Receiving cavity; 1.2. Groove; 1.3. Connecting shaft; 2. Rotary seat; 2.1. Bracket; clearance groove; 2.12. Connecting hole; 2.121. Positioning groove; 2.13. Shaft; 2.14. Transmission gear ring; 2.2. Slot; 4. Grinding component; 4.1. Grinding surface; 4.11. Knife slot; 5. Knob; 5.1. Gear; 6. Support component; 6.1. Spring; 7. Pin; 8. Lever; 8.1. Elastic component; 8.2. Button; 9. Scissors. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] Please see Figure 1-3 ,as well as Figure 7 As shown:

[0034] A knife sharpener suitable for sharpening scissors includes:

[0035] Handle 1, wherein the handle 1 has a hollow receiving cavity 1.1;

[0036] Rotary seat 2, which is disposed in the accommodating cavity 1.1 and can rotate about axis A;

[0037] Several grinding components 4 are arranged at intervals along the circumference of the rotating base 2. Each grinding component 4 has two grinding surfaces 4.1. The two grinding surfaces 4.1 are arranged at an included angle to form a blade groove 4.11, which allows one of the blades of the scissors 9 to enter.

[0038] A groove 1.2 is provided on the handle 1 along the rotation path of the grinding component 4, and the groove 1.2 allows at least one tool holder groove 4.11 of the grinding component 4 to be exposed;

[0039] The transmission gear ring 2.14 is mounted on the rotary seat 2 and is coaxial with the rotary seat 2;

[0040] A knob 5 is rotatably mounted on a handle 1, and a gear 5.1 is mounted on the knob 5 to mesh with a transmission gear ring 2.14;

[0041] By turning knob 5, gear 5.1 drives rotating base 2 to rotate, thereby cyclically switching the exposure of grinding component 4 from slot 1.2.

[0042] Rotating knob 5 will rotate the rotary table 2, allowing the tool slot 4.11 to protrude from the slot opening 1.2.

[0043] Place the blade of one arm of the scissors 9 into the blade holder 4.11. The two sides of the blade of the scissors 9 can fit against the grinding surface 4.1, allowing one arm of the scissors 9 to move back and forth within the blade holder 4.11, which can grind the blade of the scissors. This reduces the difficulty of grinding the scissors 9. In addition, the structure is simpler and has fewer parts, which reduces the cost.

[0044] Please see Figure 4 As shown:

[0045] The grinding surfaces 4.1 of the multiple grinding components 4 are arranged at different angles to form tool grooves 4.11 with different angles. This application integrates multiple grinding components 4 on the handle 1.

[0046] The grinding component 4 can be a steel sheet or a ceramic rod, etc. The grinding surface 4.1 of the steel sheet and the grinding surface 4.1 of the ceramic rod are set at an angle, forming a "V"-shaped tool groove 4.11 between them.

[0047] Multiple sharpening components 4 can be configured to achieve different sharpening effects.

[0048] For example, the angles between the 4.1 grinding surfaces are different, which are suitable for grinding the blades of scissors with different angles and thicknesses.

[0049] Different grit settings are available to suit grinding needs such as sharpening and lapping, thus enriching the functionality of the device and adapting to different operational requirements.

[0050] Please see Figure 3 , Figure 5 As shown: The rotating base 2 is composed of two circular support brackets 2.1 joined together along axis A.

[0051] The grinding component 4 is installed between two supports 2.1, and the supports 2.1 are provided with a through groove 2.11. The blade groove 4.11 is located inside the through groove 2.11 and is designed to be through the entire structure.

[0052] This utility model uses two thin, circular supports 2.1 joined together to form a rotating base 2, which has a compact structure and is conducive to the miniaturization of the device;

[0053] When installing the grinding component 4, the grinding component 4 is first pre-assembled into the mounting slot of one of the brackets 2.1, and then another bracket 2.1 is installed. The other bracket 2.1 presses over the grinding component 4, so that the grinding component 4 is fixed on the rotating base 2.

[0054] The clearance groove 2.11 and the blade placement groove 4.11 on the bracket 2.1 are both through-type structures. The blade of the scissors 9 is inserted into the blade placement groove 4.11 and contacts the grinding surface 4.1. The grinding operation can be carried out by moving the main body of the scissors 9 back and forth. It is convenient to use and easy to operate.

[0055] Please see Figures 4-6 As shown: The rear bracket 2.1 has a connecting hole 2.12 along the axial direction. The handle 1 is provided with a connecting shaft 1.3, which extends into the connecting hole 2.12. The connecting shaft 1.3 is provided with multiple radially elastic support members 6. The inner wall of the connecting hole 2.12 is provided with multiple positioning grooves 2.121 distributed circumferentially. The support members 6 can elastically enter and exit the positioning grooves 2.121.

[0056] Specifically, two support members 6 can be set along the diameter direction of the connecting shaft 1.3. The support member 6 can be a steel ball. A spring 6.1 is abutted between the steel ball and the connecting shaft 1.3. A retaining member can also be set on the connecting shaft 1.3 to maintain the radial extension and contraction of the spring 6.1 to drive the steel ball to move radially.

[0057] The inner wall of the connecting hole 2.12 can be provided with each positioning groove 2.121, which is distributed with the same radius as a grinding component 4.

[0058] When the required grinding part 4 is rotated to protrude from the slot 1.2, the support 6 enters the positioning slot 2.121 under the action of the spring 6.1 to pre-position the rotating seat 2 and keep it in the above position, thereby improving the stability of the rotating seat 2 and making it convenient for the user.

[0059] In addition, after the rotating seat 2 is driven to rotate to overcome the preload of the spring 6.1, the support 6 can be moved out of the positioning groove 2.121, and the rotating seat 2 loses its prepositioning function.

[0060] Please see Figure 2-3 As shown: The front bracket 2.1 is provided with a shaft portion 2.13 extending axially forward, and the transmission gear ring 2.14 is arranged around the shaft portion 2.13.

[0061] The transmission gear ring 2.14 and gear 5.1 are both spur gears. The transmission gear ring 2.14, shaft 2.13 and bracket 2.1 are integrally molded, which has the characteristics of simple structure, convenient manufacturing, low cost and stable and reliable fit.

[0062] The rotary base 2 is provided with multiple slots 2.2 at intervals along the circumference. The handle 1 is provided with at least one pin 7 that can move up and down along the movement trajectory of the slots 2.2. When the rotary base 2 rotates to the position of the slots 2.2 and the pin 7 are opposite each other, the pin 7 moves to enter the slots 2.2 to lock the rotation of the rotary base 2. When the pin 7 moves to move out of the slots 2.2, the rotary base 2 can rotate.

[0063] The slot 2.2 is provided on the circumferential surface of the rotary base 2 and between adjacent grinding components 4;

[0064] After the pin 7 enters the slot 2.2, the rotation of the rotating seat 2 can be completely locked, so that the rotating seat 2 is in a stable position, and the rotating seat 2 is prevented from rotating under force during the grinding operation, so that the device operates stably and reliably.

[0065] The handle 1 is provided with a lever 8 that extends to the left and right. The middle position of the lever 8 is hinged to the handle 1. The pin 7 is provided at the front end of the lever 8. The tail end of the lever 8 is abutted against the handle 1 with an elastic element 8.1. The handle 1 is provided with a button 8.2, which is abutted against the tail end of the lever 8.

[0066] The lever 8 is horizontally positioned in the internal space above the handle 1. When the button 8.2 is pressed down, the lever 8 can rotate left and right at the hinge, causing the tail to move downward, the spring 6.1 to be compressed, the front to be lifted upward, and the pin 7 to be removed from the slot 2.2. At this time, the rotating seat 2 loses its locking function, and the rotation of the rotating seat 2 can be controlled.

[0067] After button 8.2 loses its pressing function, spring 6.1 resets and drives the tail end of lever 8, along with button 8.2, to lift upwards. The front end of lever 8 moves downwards. If slot 2.2 is aligned with pin 7, pin 7 can enter slot 2.2. The preload of spring 6.1 drives pin 7 to be stably held in slot 2.2, making the device operate stably and reliably.

[0068] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A sharpener for use in sharpening scissors, characterized by comprising: include: Handle (1), the handle (1) having a hollow receiving cavity (1.1); Rotary seat (2), which is disposed in the accommodating cavity (1.1) and can rotate around axis A; Several grinding components (4) are arranged at intervals along the circumference of the rotating base (2). Each grinding component (4) has two grinding surfaces (4.1). The two grinding surfaces (4.1) are arranged at an angle to form a blade groove (4.11) for one of the blades of the scissors (9) to enter. The handle (1) has a slot (1.2) along the rotation path of the grinding component (4), and the slot (1.2) allows at least one tool slot (4.11) of the grinding component (4) to be exposed; A transmission gear ring (2.14) is mounted on a rotating base (2) and is coaxial with the rotating base (2); A knob (5) is rotatably mounted on a handle (1), and a gear (5.1) is mounted on the knob (5) to mesh with a transmission gear ring (2.14). By turning the knob (5), the gear (5.1) drives the rotating base (2) to rotate, thereby cyclically switching the exposure of the grinding component (4) from the slot (1.2).

2. A sharpener according to claim 1, wherein: The grinding surfaces (4.1) of multiple grinding components (4) are arranged with different included angles to form tool grooves (4.11) with different included angles.

3. A sharpener according to claim 2, wherein: The rotating base (2) is formed by two circular support brackets (2.1) joined together along axis A. The grinding component (4) is installed between two supports (2.1), and the supports (2.1) are provided with a through groove (2.11) that runs from front to back. The blade slot (4.11) is located inside the through groove (2.11) and is designed to run from front to back.

4. A sharpener according to claim 3, wherein: The rear bracket (2.1) has a connecting hole (2.12) along the axial direction. The handle (1) is provided with a connecting shaft (1.3). The connecting shaft (1.3) extends into the connecting hole (2.12). The connecting shaft (1.3) is provided with multiple radially elastic support members (6). The inner wall of the connecting hole (2.12) is provided with multiple positioning grooves (2.121) distributed circumferentially. The support members (6) can elastically enter and exit the positioning grooves (2.121).

5. The knife sharpener as defined in claim 3, wherein: The front bracket (2.1) is provided with a shaft (2.13) extending axially forward, and the transmission gear ring (2.14) is arranged around the shaft (2.13).

6. The knife sharpener as defined in claim 1, wherein: The rotating base (2) is provided with multiple slots (2.2) spaced apart along the circumference. The handle (1) is provided with at least one movable pin (7) along the movement trajectory of the slots (2.2). When the rotating base (2) rotates to the position where the slots (2.2) and the pin (7) are opposite each other, the pin (7) moves to enter the slots (2.2) to lock the rotation of the rotating base (2). When the pin (7) moves to move out of the slots (2.2), the rotating base (2) can rotate.

7. A sharpener according to claim 6, wherein: The handle (1) is provided with left and right extending levers (8), the middle positions of the levers (8) are hinged with the handle (1), the pin bodies (7) are arranged at the front ends of the levers (8), the elastic members (8.1) are arranged between the tail ends of the levers (8) and the handle (1), the handle (1) is provided with a button (8.2), and the button (8.2) is arranged in abutment with the tail end of the lever (8).

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