Open-end wrench

Abstract

The invention relates to an open end wrench, comprising a wrench body, an active clamp part and an elastic element. The wrench body is provided with a first fixing clamp jaw and a second fixing clamp jaw which are modeled at one end. The first fixing clamp clip jaw is provided with a first clamp fixing section which is at the direction facing the opening of the clamp and is in parallel with an axial line. The second fixing clamp jaw is provided with a groove which is extended along the axial line in parallel. The active clamp jaw is provided with a sliding part which is glidingly matched withthe groove of the wrench body and a second clamp fixing section which is in parallel with the axial line and is opposite to the first clamp fixing section by an inclined diagonal manner. The elastic element is arranged between the wrench body groove and glidingly matching part of the active clamp part. Thereby, the wrench produces a function of idle withdrawal motion through the active clamp jaw and produces a characteristic of clamping a screw work piece by inclined diagonal manner. The invention can be applied to a screw work piece with slightly small external diameter and can produce an open end wrench with idle withdrawal motion, which is applicable to various types of screw work piece with most practical application.

Description

technical field [0001] The invention relates to a wrench, in particular to an open-end wrench capable of tightening or loosening screw parts, which can be retracted in idling and is suitable for screw parts of different specifications. Background technique [0002] see figure 1 Shown is the three-dimensional schematic view of a general existing open-end wrench. Taking the general open end wrench 1 as an example, it mainly includes a body 11 and two fixed jaws 13 formed on one end of the body 11 and defining a jaw 12 . The aforementioned fixed jaws 13 each have a clamping surface 131 facing each other. The aforesaid fixed jaws 13 respectively use the clamping surfaces 131 to clamp the two acting surfaces 21 of a screw 2 (such as nuts, bolts) at relative positions, whereby the body 11 only needs to be driven forward or reverse to achieve The purpose of screwing or unscrewing the screw 2. [0003] However, since the above-mentioned open-end wrench 1 is constantly kept in a ...

AI Technical Summary

Problems solved by technology

[0005] However, although the aforementioned open-end wrench 3 has the function of idling and retreating, the screw 2 can be tightened or unscrewed without being disengaged from the screw 2, but because the caliber of the jaw 32 does not have variability , but can only be applied to a single specification screw 2, and there are some defects such as limited use and inconvenient use

[0006] This shows that above-mentioned existing open-end wrench obviously still has inconvenience and defect in structure and use, and needs to be further improved urgently

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but for a long time no suitable design has been developed, and the general products do not have a suitable structure to solve the above-mentioned problems. Urgent problem

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