Movable arc escapement jaw wrench

Abstract

The invention provides a movable arc escapement jaw wrench. In the wrench, an arc groove is concavely arranged inside a wrench head; an escapement jaw capable of resetting after sliding is embedded into the arc groove in a coating state; and a grip jaw part protruding from the arc groove is formed on the end part of the escapement jaw. The wrench clamps a bolt by using the inner surface of the grip jaw part to fit the opposite surface of the wrench head, when the wrench head reverses, the escapement jaw can retract into the arc groove to cause slipping, so repeated operations of clock-wise rotation and counter-clock rotation can continuously screw the bolt; the arc groove in a concave pit state ensures low manufacturing cost and can maintain better accuracy; and the escapement jaw which is arranged in the arc groove in the sliding mode ensures better size adaptability and larger clamping area when the wrench clamps the bolt.

Description

technical field [0001] The invention relates to a hand tool, in particular to a movable arc-shaped escapement jaw wrench which can jump off to achieve one-way rotation when reversing. Background technique [0002] The structure of the existing one-way ratchet wrench, such as the U.S. Patent No. 7,111,529 shown in Figure 12, is to set a clamping groove 41 in the middle of the front end of the wrench head 40, and form several arcs at intervals around the clamping groove 41. The notch provides space for the bolt to escape when it is reversed, and an upper clamp arm 42 and a lower clamp arm 43 are formed on the wrench head 40 corresponding to the upper and lower sides of the clamping groove 41, and the inner wall of the lower clamp arm 43 is recessed. A socket 431 with openings on both sides, a conical spring 44 is arranged in the socket 431, and a ratchet block 45 protruding from the clamping groove 41 and abutting against the outer end of the tapered spring 44 is provided in t...

AI Technical Summary

Problems solved by technology

[0011] The main technical problem to be solved by the present invention is to overcome the disadvantages of the existing one-way ratchet wrench in structure, such as difficult processing, easy slipping during operation, and poor applicability of small size, and the present invention provides a movable arc-shaped escapement jaw wrench , so that the processing cost of the present invention is low and can maintain better precision, and the escapement jaw slidingly arranged in the arc-shaped groove has better size adaptability and larger clamping area when clamping the bolt

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