Handle lengthening structure for hand-operated tool

Abstract

The invention discloses a handle lengthening structure for a hand-operated tool. The structure comprises a handle and a lengthening rod of the hand-operated tool, a spring and a telescopic rod, wherein the rod-shaped handle is inserted into the central hole of the lengthening rod; radial blind holes are distributed on the circumferential surface of the handle at equal angles and consist of a stepped hole on the inner side and a threaded expanded hole on the outer side; the spring is positioned in a small-diameter hole of the stepped hole; the telescopic rod is positioned on the outer side of the spring, and the outer end of the telescopic rod is extended out of the threaded expanded hole; the bottom of the telescopic rod is connected with a large-diameter hole molded surface of the stepped hole; a limiting bolt sleeved on the telescopic rod is connected in the threaded expanded hole; the telescopic rod is provided with a wedge-shaped head part; the end face of the wedge-shaped head part is a curved surface, and is in linear contact with the wall of the central hole; and a contact line is deviated from the central line of the telescopic rod. In the structure, the space between the lengthening rod and the handle can remain at any position so as to fulfill the aim that the lengthened length of the handle can be arbitrarily changed.

Description

technical field [0001] The invention relates to an elongated structure of a hand tool handle. Background technique [0002] For hand tools like socket wrenches that rotate in one direction during use, in order to reach a far-reaching or narrow operating position or to lengthen the force arm, it is necessary to lengthen the handle of the hand tool. On the handle of the tool, the connection between the handle of the hand tool and the extension rod can adopt a simple surface connection structure or a threaded connection structure. The Chinese patent number is 97250621.7, which is a utility model patent named "tool extension rod connection device". What is introduced in the background technology of the description is the spring steel ball connection structure, and the utility model patent specification of the Chinese Patent No. 97250621.7 also discloses a nested connection structure composed of a wrench rod, an extension rod, a sleeve and a C-ring . At present, in order to adj...

AI Technical Summary

Problems solved by technology

At present, in order to adjust the length of the extension of the tool handle, it is equipped with multiple extension rods of different lengths, and the length of the extension is adjusted by exchanging the extension rods, so the length of the extension depends on the length of the extension rods. Can not be adjusted at will

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