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A cam self-locking adjustable wrench

An adjustable wrench and cam technology, applied in the field of wrenches, can solve the problems of difficulty in adjusting to the correct size, inflexible operation, time-consuming work, etc., and achieve the effect of flexible locking and loosening process and stable locking state.

Inactive Publication Date: 2015-07-29
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the size of the opening of the ordinary adjustable wrench can be adjusted, it is necessary to adjust the size of the wrench according to the size of the actual bolts and nuts during operation. The work is time-consuming and difficult to adjust to the correct size. There is a gap between the wrench heads, and it is very inflexible to operate

Method used

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  • A cam self-locking adjustable wrench
  • A cam self-locking adjustable wrench
  • A cam self-locking adjustable wrench

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Embodiment Construction

[0016] Refer to the attached figure 2 The embodiment of the present invention is described further:

[0017] Such as figure 2 As shown, the present invention consists of movable pull lip 1, fixed pull lip 2, movable guide rod 3, spring 4, pin shaft 5, arc-shaped end cap 6, handle 7, pin shaft 8, torsion spring 9, bolt 10, Bolt 11 forms. Before use, the movable wrench lip 1 is in an open state under the tension of the torsion spring 9, and the handle 7 is located at the top position of the lower opening of the arc-shaped end cover 6. When working on bolts or nuts, since the tension of the spring 4 is greater than that of the torsion spring 9, the movable wrench lip 1 first rotates around the pin shaft 8 under the action of the handle 7, when the movable wrench lip 1 rotates to contact with the bolt or nut At this time, the movable pull lip 1 stops rotating. At this time, continue to increase the active force of the handle 7, the handle 7 starts to rotate around the pin sha...

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PUM

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Abstract

The invention relates to a cam self-locking monkey spanner mainly comprising a movable spanner lip (1), a fixed spanner lip (2), a movable guide rod (3), a spring (4), a pin roll (5), an arc-shaped end cap (6), a handle (7), another pin roll (8), a torsion spring (9), a bolt (10) and another bolt (11). Tooth-structured areas which can be mutually meshed are arranged at the top ends of the fixed spanner lip (2) and the movable guide rod (3). A cam structure is arranged at the top end of the handle (7). A convex arc structure is arranged at the top end of the cam structure. The bottom end of the movable guide rod (3) is provided with a concave arc structure. The convex arc structure of the handle (7) can be nested into the concave arc structure of the movable guide rod (3). By the cam self-locking monkey spanner, size of a spanner mouth can be adaptively adjusted, and self-locking of the spanner mouth can be realized under the action of the cam mechanism at the top end of the handle (7).

Description

Technical field: [0001] The invention relates to a wrench, in particular to a cam self-locking adjustable wrench. Background technique: [0002] At present, in the mechanical field, wrenches are widely used, especially in tightening and loosening bolts and nuts. Commonly used wrenches include dual-purpose wrenches, double-end wrenches, single-head wrenches, and hook wrenches. Due to the different sizes and specifications of bolts and nuts, different types of wrenches have to be replaced according to the size of bolts and nuts. There are many kinds of wrenches, which also brings inconvenience to the operation. With the development of the wrench, a common monkey wrench with strong adaptability appeared. Although the size of the opening of the ordinary adjustable wrench can be adjusted, it is necessary to adjust the size of the wrench according to the size of the actual bolts and nuts during operation. The work is time-consuming and difficult to adjust to the correct size. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B13/28B25B13/38B25B13/42
Inventor 韩善灵吴义伟
Owner SHANDONG UNIV OF SCI & TECH