Unidirectional driving spanner with protective device

Abstract

An unidirectional driving wrench with protection device, comprises: a wrench handle, including a head department with a hole and a groove connecting to the hole; a driving body, located in the hole; a continuous action block, located in the groove, and connecting to the driving body; an elastic group, located in the groove, and comprising a first elastic body and a second elastic body which meshs to each other. Wherein, the first elastic body has larger elastic coefficient than the second elastic body, to supply return elastic force when the driving body is block by the continuous action block.

Description

【Technical field】 [0001] The invention is applied to the technical field of hand tools, in particular to a one-way drive wrench with a protective device which can reduce elastic body deformation and effectively release stuck state. 【Background technique】 [0002] Modern technology is advancing day by day, and the improvement of hand tools is also becoming more and more sophisticated. In order to provide more perfect and easy-to-use products for users to use conveniently, manufacturers manufacture, assemble and develop new types of products that can reduce various costs. hand tools. [0003] Generally known one-way drive wrench, such as Figure 11 As shown, it is provided with a wrench handle 80, one end of the wrench handle 80 is provided with a head 81, and the center of the head 81 is provided with a perforation 82, and the head 81 is concavely provided with an accommodating hole 82. slot 83, and the through hole 82 is pivotally provided with a driving body 84, and the ac...

AI Technical Summary

Problems solved by technology

[0004] Therefore, when the driving body 84 and the interlocking block 85 are overstressed and stuck, if the trigger handle 80 is reversely rotated, the inner wall of the limiting groove 86 will push against and compress the spring 87 toward The moving block 85 moves in the direction to cause the compression of the spring 87, but because the length of the spring 87 is too long, and in order to provide a smooth elastic force in idling, the elastic coefficient is generally larger and the pipe diameter is smaller, but in the continuous During the compression process, it is easy to cause distortion, deformation, and even troubles of being tangled together, and it is even impossible to generate enough elastic force to pop out the linkage block 85 to release the stuck state, resulting in problems of short use and service life. And even if the stuck state is released, after the spring 87 has been deformed, it may not be able to provide stable and effective elastic force, resulting in inaccurate operation and poor use effect.

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