Anti-skid wrench
By designing the inner side wall of the wrench hole as an interlaced arc surface and planar structure, combined with ratchet installation, the problem of existing wrench slippage is solved, and a more stable wrench fit with bolts or nuts is achieved, improving the convenience of use.
Patent Information
- Application Number
- CN202420042097.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-09
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-09
AI Technical Summary
Existing plum blossom wrench is prone to slipping in actual operation, resulting in inconvenience in use.
An anti-slip wrench is designed, and the inner side wall of the wrench hole is composed of an interlaced arc surface and a plane, forming a plurality of planes to reduce slippage, including a first connecting surface and a second connecting surface, and the first connecting surface is an arc The second connecting surface is a plane forming an obtuse angle and an angle is provided at the wrench head to install the ratchet.
Effectively reduces slippage between the wrench and the bolt or nut, and improves the stability and safety of operation.
Smart Images
Figure CN222134820U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a wrench, in particular to an anti-slip wrench. Background Art
[0002] The box spanners in the prior art include straight box spanners, box spanners with elbows, and ratchet spanners with box spanner holes, which cooperate with bolts or nuts through the box spanner holes to completely surround the heads of the bolts and nuts, thereby not damaging the bolt corners and are more convenient to use.
[0003] The plum blossom hole is generally formed by a plurality of arc concave surfaces and arc convex surfaces connected in sequence in an alternating manner. This structure will still slip during actual operation, so it is necessary to further improve the anti-slip effect of this type of wrench. Utility Model Content
[0004] The utility model aims at solving the problems existing in the prior art wrenches and provides an anti-slip wrench.
[0005] In order to solve the above technical problems, the utility model is solved by the following technical solutions:
[0006] A non-slip wrench includes a wrench head, a wrench hole is configured in the middle of the wrench head, and is characterized in that: the inner side wall of the wrench hole includes a first connecting surface and a second connecting surface which are staggered in sequence and connected end to end, the first connecting surface includes a first arc surface coaxial with the wrench hole and a first plane symmetrically arranged at both ends of the first arc surface; the second connecting surface includes two second planes forming an obtuse angle, and the first plane is connected to the adjacent second plane.
[0007] Preferably, the first plane and the adjacent second plane are vertically connected to each other.
[0008] Preferably, the radius of curvature of the first arc surface is greater than the distance from the second plane to the axis of the wrench hole.
[0009] Preferably, the second connecting surface further includes a second arc surface arranged between the two second planes, and the curvature of the second arc surface is smaller than that of the first arc surface.
[0010] Preferably, there are three first connecting surfaces and three second connecting surfaces, and the second planes on the second connecting surfaces are arranged in pairs and in parallel with each other.
[0011] Preferably, the included angle between the two second planes in the second connecting surface is 120°.
[0012] Preferably, a ratchet mounting hole is provided at the wrench head, a ratchet is provided in the ratchet mounting hole, and the wrench hole is arranged in the middle of the ratchet.
[0013] The utility model has significant technical effects due to the adoption of the above technical solutions:
[0014] In this embodiment, the wrench hole is designed to be formed by sequentially connecting an arc surface and a plurality of planes at different angles, so that it can better match the outer contour of the bolt or nut and can effectively reduce slippage. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of embodiment 1 of the utility model.
[0016] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle wrench head.
[0017] Figure 3 It is a structural schematic diagram of embodiment 2 of the present utility model.
[0018] Figure 4 yes Figure 3 Side view of.
[0019] Figure 5 It is a structural schematic diagram of embodiment 3 of the present utility model. DETAILED DESCRIPTION
[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0021] Example 1
[0022] A non-slip wrench, such as Figure 1 , Figure 2 As shown, it includes a wrench head 1, a wrench hole 2 is constructed in the middle of the wrench head 1, and the inner wall of the wrench hole 2 includes a first connecting surface 21 and a second connecting surface 22 which are staggered in sequence and connected end to end. The first connecting surface 21 includes a first arc surface 201 coaxial with the wrench hole 2 and a first plane 202 symmetrically arranged at both ends of the first arc surface 201; the second connecting surface 22 includes two second planes 203 forming an obtuse angle, and the first plane 202 is connected to the adjacent second plane 203.
[0023] In this embodiment, the first plane 202 is vertically connected to the adjacent second plane 203, the angle between the two second planes 203 in the second connecting surface 22 is 120°, there are three first connecting surfaces 21 and three second connecting surfaces 22, and the second planes 203 on the second connecting surface 22 are arranged in pairs in parallel.
[0024] The three first connecting surfaces 21 can form six planes that cooperate with bolts or nuts, which can effectively prevent slipping. The three first arc surfaces 201 can avoid the R angle of the worn nut being less than 80% of the hexagonal nut.
[0025] In this embodiment, the curvature radius of the first arc surface 201 is greater than the distance from the second plane 203 to the axis of the wrench hole 2 .
[0026] In addition, the second connecting surface 22 also includes a second arc surface 204 disposed between the two second planes 203, and the curvature of the second arc surface 204 is smaller than that of the first arc surface 201. The second arc surface 204 can protect the R angle of the hexagonal nut.
[0027] Example 2
[0028] The same as in Example 1, except that the present embodiment provides a protective wrench with an elbow, such as Figure 3 , Figure 4 As shown, it facilitates the removal of bolts and nuts installed in recessed spaces and provides operating clearance for fingers to prevent scratches.
[0029] Example 3
[0030] The same as the first embodiment, the difference is that the present embodiment provides a ratchet wrench 102, such as Figure 5 As shown, a ratchet mounting hole 101 is provided at the wrench head 1 , a ratchet 102 is provided in the ratchet mounting hole 101 , and a wrench hole 2 is provided in the middle of the ratchet 102 .
[0031] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on one or several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.
[0032] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.
Claims
1. An anti-slip wrench, comprising a wrench head (1), a wrench hole (2) being configured in the middle of the wrench head (1), characterized in that: The inner side wall of the wrench hole (2) comprises a first connecting surface (21) and a second connecting surface (22) which are staggered in sequence and connected end to end, the first connecting surface (21) comprising a first arc surface (201) coaxial with the wrench hole (2) and a first plane (202) symmetrically arranged at two ends of the first arc surface (201); the second connecting surface (22) comprises two second planes (203) forming an obtuse angle, and the first plane (202) is connected to the adjacent second plane (203).
2. The anti-slip wrench according to claim 1, characterized in that: The first plane (202) and the adjacent second plane (203) are vertically connected to each other.
3. The anti-slip wrench according to claim 1, characterized in that: The radius of curvature of the first arc surface (201) is greater than the distance from the second plane (203) to the axis of the wrench hole (2).
4. The anti-slip wrench according to claim 1, characterized in that: The second connecting surface (22) further comprises a second arc surface (204) arranged between the two second planes (203); the curvature of the second arc surface (204) is smaller than the curvature of the first arc surface (201).
5. The anti-slip wrench according to claim 1, characterized in that: There are three first connection surfaces (21) and three second connection surfaces (22), and the second planes (203) on the second connection surfaces (22) are arranged in pairs relatively parallel to each other.
6. The anti-slip wrench according to claim 1, characterized in that: The included angle between the two second planes (203) in the second connecting surface (22) is 120°.
7. An anti-slip wrench according to any one of claims 1 to 6, characterized in that: A ratchet mounting hole (101) is provided at the wrench head (1), a ratchet (102) is provided in the ratchet mounting hole (101), and the wrench hole (2) is arranged in the middle of the ratchet (102).