Spanner for disassembling and assembling knife handle

Abstract

The utility model discloses a wrench for disassembling and assembling a knife handle, and relates to the field of machine tool disassembling and assembling tools, in particular to the wrench for disassembling and assembling the knife handle, which comprises a lantern ring, a handle, a handle, a handle, a handle and a handle, a handle is further included and composed of a working part and a holding part, the working part is hinged to the lantern ring through a hinge shaft, and the axis of the hinge shaft is parallel to the axis of the lantern ring so that the handle can rotate around the hinge shaft relative to the lantern ring. Teeth are arranged on the side, facing the lantern ring, of the working part, the extending direction of the teeth is perpendicular to the axis of the hinged shaft, the teeth can stretch into or retreat from the lantern ring through the through hole, and the handle rotates around the hinged shaft and does eccentric motion relative to the circle center of the lantern ring, so that the teeth on the working part can be pressed in the groove and cannot be separated from the groove only by making contact with the groove in the knife handle. And meanwhile, the sleeve ring completely surrounds the cutter handle, so that the wrench is prevented from falling off and scratching an operator, and the safety is high.

Description

Technical Field

[0001] This utility model relates to the field of machine tool disassembly and assembly tools, and in particular to a tool holder disassembly and assembly wrench. Background Technology

[0002] The existing handle wrench has a semi-circular hook head. When using it, the protruding locking plate of the hook head needs to be aligned with and locked into the groove on the handle. The alignment process takes a long time and is inefficient. Furthermore, the wrench is not securely fixed during the application of force and is prone to falling off the handle, which may scratch the operator. Therefore, it is particularly urgent to design a handle wrench that is easy to use and does not easily fall off. Utility Model Content

[0003] The purpose of this utility model is to provide a wrench for removing and installing knife handles, so as to solve the problems existing in the prior art, making the wrench more convenient to use and less likely to fall off.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides a tool handle removal and installation wrench, comprising:

[0006] A collar is used to fit around the outer periphery of the tool holder, and a through hole extending circumferentially is provided on the side wall of the collar.

[0007] The handle includes a working part and a gripping part, the working part being hinged to the collar via a hinge shaft, the axis of the hinge shaft being parallel to the axis of the collar, so that the handle can rotate relative to the collar about the hinge shaft;

[0008] The working part has teeth on the side facing the collar, and the extension direction of the teeth is perpendicular to the axis of the hinge shaft. When the handle rotates around the hinge shaft, the teeth can extend into or retract into the collar through the through hole.

[0009] Furthermore, the working part is provided with a plurality of teeth on the side facing the collar, and the extension direction of each tooth is perpendicular to the axis of the hinge shaft. The tooth tip of each tooth is located on the same convex arc surface. The arc surface is eccentrically arranged with the hinge shaft as the center, so that when the handle rotates around the hinge shaft, the teeth can extend into or retract into the collar through the through hole.

[0010] Furthermore, the working part is provided with a back tooth on the side opposite to the tooth, and the extension direction of the back tooth is perpendicular to the axis of the hinge shaft.

[0011] When the handle rotates in the first direction, the teeth extend into the collar to engage the tool handle; when the handle rotates in the second direction opposite to the first direction, the back teeth extend into the collar to engage the tool handle.

[0012] Furthermore, the working part has a plurality of back teeth on the side opposite to the tooth, and the extension direction of each back tooth is perpendicular to the axis of the hinge shaft, and the tooth tip of each back tooth is located on the same convex arc surface.

[0013] The arc surface where the back tooth tip is located is eccentrically set with the hinge axis as the center, and its eccentric direction is opposite to the eccentric direction of the arc surface where the tooth tip is located.

[0014] Furthermore, the teeth and the back teeth are symmetrically arranged on the upper and lower sides of the working part.

[0015] Furthermore, the inner wall of the collar is provided with anti-slip texture.

[0016] Furthermore, the inner wall of the collar is provided with an elastic washer.

[0017] Furthermore, a return spring is connected between the gripping part and the collar.

[0018] Furthermore, the surface of the grip portion is provided with anti-slip texture.

[0019] Furthermore, the grip portion is fitted with an anti-slip rubber sleeve.

[0020] The present invention achieves the following technical advantages over the prior art:

[0021] This utility model discloses a knife handle assembly / disassembly wrench. In use, the wrench's collar is completely enclosed on the knife handle. When the wrench handle rotates around the hinge axis on the collar, the teeth on the working part of the handle can extend into the collar through the through hole and engage with the groove on the outer circumference of the knife handle. Because the rotation of the handle around the hinge axis is an eccentric motion relative to the center of the collar, the teeth on the working part only need to make contact with the groove on the knife handle to remain pressed in the groove without disengaging, reducing the time spent on aligning with the groove, making it more convenient to use, and improving the efficiency of assembling and disassembling knife handles. At the same time, the collar completely enclosing the knife handle prevents the wrench from falling off and injuring the operator, ensuring high safety. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is an isometric view of the tool handle assembly / disassembly wrench in this embodiment of the present invention;

[0024] Figure 2This is a front view schematic diagram of the handle removal and assembly wrench in the embodiment of this utility model;

[0025] Among them, 1. collar; 2. handle; 21. working part; 22. gripping part; 3. tooth top. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The purpose of this utility model is to provide a wrench for removing and installing knife handles, so as to solve the problems existing in the prior art, making the wrench more convenient to use and less likely to fall off.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figures 1-2 As shown, this utility model provides a knife handle assembly / disassembly wrench, comprising: a collar 1 for fitting around the outer periphery of the knife handle, wherein a through hole extending circumferentially is provided on the side wall of the collar 1; and a handle 2, wherein the handle 2 includes a working part 21 and a gripping part 22, the working part 21 being hinged to the collar 1 via a hinge shaft, the axis of the hinge shaft being parallel to the axis of the collar 1, so that the handle 2 can rotate relative to the collar 1 around the hinge shaft; the working part 21 is provided with teeth on the side facing the collar 1, the extension direction of the teeth being perpendicular to the axis of the hinge shaft, and when the handle 2 rotates around the hinge shaft, the teeth can extend into or retract from the interior of the collar 1 through the through hole.

[0030] When in use, the collar 1 of the wrench is completely wrapped around the handle. When the handle 2 of the wrench rotates around the hinge axis on the collar 1, the teeth of the working part 21 on the handle 2 can extend into the interior of the collar 1 through the through hole on the collar 1 and engage with the groove on the outer circumference of the handle. Since the rotation of the handle 2 around the hinge axis is an eccentric movement relative to the center of the collar 1, the teeth on the working part 21 only need to make contact with the groove on the handle to press into the groove without disengaging, reducing the time spent on the groove, making it more convenient to use, and improving the efficiency of disassembling and assembling the handle. At the same time, the way the collar 1 completely surrounds the handle prevents the wrench from falling off and scratching the operator, ensuring high safety.

[0031] As an example of implementation, a return spring is connected between the grip 22 and the collar 1. After the collar 1 is fitted onto the outer periphery of the tool holder, the handle 2 of the wrench automatically resets under the elastic action of the return spring, so that the working part 21 locks and engages with the tool holder, making it more convenient to use and more efficient in disassembling and assembling the tool holder.

[0032] As an example of an implementable approach, such as Figures 1-2 As shown, multiple teeth can also be provided on the side of the working part 21 facing the collar 1. The extension direction of each tooth is perpendicular to the axis of the hinge shaft, and the tooth tip 3 of each tooth is located on the same convex arc surface. The arc surface is eccentrically set with the hinge shaft as the center, so that when the handle 2 rotates around the hinge shaft, the teeth can extend into or exit the interior of the collar 1 through the through hole. Since the tooth tip 3 of each tooth is located on the convex arc surface, it is convenient for each tooth to enter and exit the interior of the collar 1. Moreover, the rotation radius of each tooth around the hinge shaft is different, which can be applied to knife handles of various diameters, thus improving the compatibility of the wrench.

[0033] As an example of implementation, a back tooth can also be provided on the side of the working part 21 facing away from the tooth, with the extension direction of the back tooth perpendicular to the axis of the hinge shaft. When the handle 2 rotates in the first direction, i.e., clockwise, the tooth extends into the collar 1 to engage the tool holder. When the handle 2 rotates in the second direction opposite to the first direction, the back tooth can extend into the collar 1 to engage the tool holder. Of course, multiple back teeth can also be provided, and like the arrangement of each tooth, the extension direction of each back tooth is perpendicular to the axis of the hinge shaft, and the tooth tip 3 of each back tooth is located on the same convex arc. On the surface, the arc surface where the tooth tip 3 of the back tooth is located is eccentrically set around the hinge axis, and its eccentric direction is opposite to the eccentric direction of the arc surface where the tooth tip 3 is located. This eccentricity means that, based on the front view, when the teeth on the working part 21 are working, the hinge axis is located on the left side of the arc surface where the tooth tip 3 of each tooth is located, and when the back teeth on the working part 21 are working, the hinge axis is located on the right side of the arc surface where the tooth tip 3 of each back tooth is located. By arranging the teeth and back teeth separately on the upper and lower sides of the working part 21, the handle 2 of the wrench can work in both forward and reverse rotation, making it more practical and convenient. When the teeth and back teeth are symmetrically arranged on the upper and lower sides of the working part 21, there is no need to consider the forward or reverse direction when using the wrench, further enhancing its convenience.

[0034] As an example of implementation, anti-slip textures or elastic washers are provided on the inner wall of the collar 1 to increase the coefficient of friction between the collar 1 and the tool holder and prevent slippage.

[0035] As an example of implementation, anti-slip textures are provided on the surface of the grip 22 or an anti-slip rubber sleeve is applied to the surface of the grip 22 to prevent slippage when force is applied.

[0036] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A wrench for removing and installing knife handles, characterized in that, include: A collar is used to fit around the outer periphery of the tool holder, and a through hole extending circumferentially is provided on the side wall of the collar. The handle includes a working part and a gripping part, the working part being hinged to the collar via a hinge shaft, the axis of the hinge shaft being parallel to the axis of the collar, so that the handle can rotate relative to the collar about the hinge shaft; The working part has teeth on the side facing the collar, and the extension direction of the teeth is perpendicular to the axis of the hinge shaft. When the handle rotates around the hinge shaft, the teeth can extend into or retract into the collar through the through hole.

2. The tool handle removal and installation wrench according to claim 1, characterized in that: The working part has multiple teeth on the side facing the collar. The extension direction of each tooth is perpendicular to the axis of the hinge shaft, and the tooth tip of each tooth is located on the same convex arc surface. The arc surface is eccentrically arranged with the hinge shaft as the center, so that when the handle rotates around the hinge shaft, the teeth can extend into or retract into the collar through the through hole.

3. The tool holder removal and installation wrench according to claim 1, characterized in that: The working part is also provided with back teeth on the side opposite to the teeth, and the extension direction of the back teeth is perpendicular to the axis of the hinge shaft. When the handle rotates in the first direction, the teeth extend into the collar to engage the tool handle; when the handle rotates in the second direction opposite to the first direction, the back teeth extend into the collar to engage the tool handle.

4. The tool holder removal and installation wrench according to claim 2, characterized in that: The working part has multiple back teeth on the side opposite to the tooth, and the extension direction of each back tooth is perpendicular to the axis of the hinge shaft, and the tooth tip of each back tooth is located on the same convex arc surface. The arc surface where the back tooth tip is located is eccentrically set with the hinge axis as the center, and its eccentric direction is opposite to the eccentric direction of the arc surface where the tooth tip is located.

5. The tool holder removal and installation wrench according to claim 3 or 4, characterized in that: The teeth and the back teeth are symmetrically arranged on the upper and lower sides of the working part.

6. The tool holder removal and installation wrench according to claim 1, characterized in that: The inner wall of the collar is provided with anti-slip texture.

7. The tool handle removal and installation wrench according to claim 1, characterized in that: The inner wall of the collar is provided with an elastic washer.

8. The tool holder removal and installation wrench according to claim 1, characterized in that: A return spring is connected between the gripping part and the collar.

9. The tool holder removal and installation wrench according to claim 1, characterized in that: The grip surface is provided with anti-slip texture.

10. The tool holder removal and installation wrench according to claim 1, characterized in that: The grip part is covered with a non-slip rubber sleeve.

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