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Ratchet-wheel gear for screwdriver

A ratchet device and screwdriver technology, used in screwdrivers, wrenches, wrenches, etc., can solve the problems of cumbersome assembly, and achieve the effects of quick assembly, easy maintenance, and improved work efficiency

Pending Publication Date: 2019-05-10
绍兴三鼎工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the device has many accessories, and the assembly is more cumbersome.

Method used

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  • Ratchet-wheel gear for screwdriver
  • Ratchet-wheel gear for screwdriver
  • Ratchet-wheel gear for screwdriver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Such as Figure 1 to Figure 5 The ratchet device of a screwdriver shown includes a ratchet seat 1, a reversing ring 3 and a long gear shaft 2. The long gear shaft 2 runs through the ratchet seat 1, and the tail of the long gear shaft 2 is provided with a circlip groove 203, and the circlip groove 203 is matched with the circlip 9, the long gear shaft 2 is fixed on the ratchet seat 1 through the circlip 9, and the reversing ring 3 is matched with the top of the ratchet seat 1. The top of the long gear shaft 2 is provided with a shaft cap 202, and the shaft cap 202 matches the bottom of the knife bar of the screwdriver. The ratchet seat 1 is provided with four limit angles 106, and the limit angles 106 match with the top of the knife handle.

[0021] Left ratchet 4 and right ratchet 5 are installed in ratchet seat 1, and ratchet seat 1 is provided with left articulation groove 101 and right articulation groove 102, and the left pawl shaft 401 of left ratchet 4 matches wi...

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Abstract

The invention discloses a ratchet-wheel gear for a screwdriver. The ratchet-wheel gear comprises a ratchet-wheel seat, a reversing ring and a long gear shaft. Pawls are arranged on the ratchet-wheel seat. A ratchet wheel is arranged on the long gear shaft. Ratchet teeth arranged on the pawls are engaged with the ratchet wheel. A hinge groove is formed in the inner wall of the ratchet-wheel seat. The pawls are installed in the hinge groove and rotate around the hinge groove. An arc-shaped groove is communicated between the pawls. An arc-shaped boss is arranged on the reversing ring. The arc-shaped groove is matched with the arc-shaped boss. When the reversing ring is rotated, the arc-shaped boss rotates in the arc-shaped groove to extrude the pawl on one side, the ratchet teeth of the pawlrotate along the hinge groove to be disengaged from the ratchet wheel, and the pawl at the other end still remains engaged with the ratchet wheel, so that one-way rotation of the long gear shaft is realized. The ratchet-wheel gear has the beneficial effects of being simple in structure, small in size, quick to assemble, easy to maintain and very convenient to install and disassemble.

Description

technical field [0001] The invention belongs to the field of screwdrivers, and in particular relates to a ratchet device of a screwdriver. Background technique [0002] The blade of a common screwdriver is fixedly connected to the handle, and when the screwdriver is used, the handle is rotated to turn the blade, thereby turning the part. However, the existing screwdrivers can only rotate the knife rod at a small angle at a time. It is necessary to let go of the hand and turn a certain angle to rotate the knife rod again, which is inconvenient to use and affects work efficiency. In order to solve the problems of ordinary screwdrivers during use, a ratchet screwdriver appeared. When in use, hold the connection between the ratchet screwdriver blade and the handle with one hand, and turn the handle with the other hand to realize the unidirectional rotation of the ratchet screwdriver. The Chinese patent application No. 201010107101.0 discloses a ratchet device installed in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B15/04B25B23/00
Inventor 徐志明邢肖丽
Owner 绍兴三鼎工具有限公司
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