Ratchet wrench

Abstract

The invention relates to a ratchet wheel spanner which comprises a handle, a ratchet wheel head, two positioning rings, an adjusting ring, an adjusting ring cover, two spanner claws, two springs and a plurality of spanner claw cushions. The main body of the ratchet wheel head is circular; the inside of a ring loop is symmetrically connected with two crescent liner blocks; and an elliptical hollow cavity is formed between two liner blocks. The two spanner claws are symmetrically embedded into the ring loop of the adjusting ring and extend to one side through the elliptical hollow cavity between two liner blocks. The ratchet wheel spanner has the advantages of simple structure, the stepless adjustment of the teeth distance, the adjustability of the direction of the ratchet wheel and the rapid adjustment of the teeth distance, and can complete the screwing or unscrewing operation of a nut without taking out the ratchet wheel spanner once the ratchet wheel spanner is sleeved.

Description

Technical field [0001] The invention relates to a hand tool for tightening nuts and other parts, in particular to a ratchet wrench. Background technique [0002] The prior art wrench generally includes a handle, a fixed pliers body connected to the front end of the handle, a movable pliers body, and a worm mounted on the front end of the handle, and the movable pliers body is connected to the worm drive. When in use, turn the worm with your fingers to make the movable pliers contact the nut, and then increase the force to rotate the wrench to tighten or loosen the nut. The problem with this type of wrench is that when the operating space is limited and the wrench cannot be allowed to rotate in a circle, it can only be rotated by a small angle per movement. When you need to continue to tighten or loosen the nut, you must take out the wrench, turn it at an angle and then tighten it again. This action is often repeated many times, which is very inconvenient to use. Summary of the i...

AI Technical Summary

Problems solved by technology

The problem with this type of wrench is that when the operating space is limited and the wrench cannot be turned around, each action can only rotate a small angle

When it is necessary to continue tightening or loosening the nut, the wrench must be taken out, turned at an angle, and then tightened again. This action often needs to be repeated many times, which is very inconvenient to use.

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