Precise fitting wrench

Abstract

The invention belongs to the technical field of manual tools, and particularly relates to a precise fitting wrench. The precise fitting wrench comprises a grip, a mounting ring, an adjusting nut and an adjusting mechanism, wherein the upper end of the grip is fixedly connected with the mounting ring; the adjusting nut is rotationally mounted in the right end wall of the mounting ring, and the adjusting mechanism is arranged in the middle of the mounting ring; the adjusting mechanism comprises gear rings, an adjusting plate, a mounting plate, a mounting groove, a sliding plate, a clamping block, a clamping groove, an extrusion rod and a suction cup; the outer surfaces of the gear rings are rotationally connected with the adjusting nut through threads, and the two gear rings are symmetrically and rotationally connected to the outer surfaces of the front side and the rear side of the mounting ring correspondingly; when a rubber pipe begins to expand, a wrapping plate is pushed to enable the inner surface of the wrapping plate to be attached to the upper side surface and the lower side surface of the adjusting plate, so that the friction force between the inner surface of the wrapping plate and the outer surface of the adjusting plate is greatly increased, the structural strength of the wrench is greatly enhanced when the wrench is used for screwing a bolt or a nut, and the durability of the wrench is improved.

Description

technical field [0001] The invention belongs to the technical field of manual tools, in particular to a precision fitting wrench. Background technique [0002] A wrench is a commonly used installation and removal tool. It is a hand tool that uses the principle of leverage to turn bolts, screws, nuts and other threaded fastening bolts or nuts. Wrenches are usually made of carbon or alloy structural steel. The wrench usually has openings or sleeve holes for holding the bolt or nut at one or both ends of the shank. When in use, an external force is applied to the shank in the direction of thread rotation to turn the bolt or nut. [0003] The Torx wrench is also a kind of wrench. It is designed to surround the head of the bolt and the nut, so the bolt angle will not be damaged, and a large torque can be applied. However, the existing Torx wrench is usually fixed in shape, so it can only be used for one If you want to disassemble and assemble different bolts or nuts, you can on...

AI Technical Summary

Problems solved by technology

[0003] Torx wrench is also a kind of wrench. It is designed to completely surround the head of the bolt and nut, so it will not damage the bolt angle and can apply a large torque. However, the existing Torx wrench is usually fixed in shape, so it can only be used for one If you want to disassemble different bolts or nuts, you can only do it by replacing the torx wrench, which undoubtedly makes it inconvenient to carry after there are too many torx wrenches. At the same time, the existing torx wrench and the bolt and nut There is a certain gap between the heads, which will cause relative friction between the Torx wrench and the bolts and nuts. After a long period of rotation, the shapes of the heads of the bolts and nuts will tend to be round, which makes them unusable.

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