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Rapid ratchet spanners

A ratchet wrench, a fast technology, applied in the directions of wrenches, manufacturing tools, wrenches, etc., can solve the problems of hindering the popularization and popularization of the quick ratchet wrench, high manufacturing cost, complicated structure, etc., and achieves low production cost, simple structure improvement, and obvious effect. Effect

Inactive Publication Date: 2007-10-17
刘松土
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the defects of complex structure and high manufacturing cost in the existing ratchet wrench, the popularization of fast ratchet wrench is hindered.

Method used

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  • Rapid ratchet spanners

Examples

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Embodiment Construction

[0012] The serial numbers in the figure respectively indicate: head 101, annular groove 102, positioning pin hole 103, handle 104; through hole 105, shrinking platform 106, circlip groove 107, inner edge wall 108; multi-stage slope spring ring 201 , slope 202, needle roller 203; circlip 301, circlip opening 302;

[0013] The present invention will be further described in detail through the embodiments below in conjunction with the accompanying drawings.

[0014] Referring to Figures 1-3, Figure 1 shows an exploded view of the present invention. It includes a wrench body and a working twist plate 401. The wrench body consists of a head 101 and a handle 104. A through hole 105 that can receive the working twist plate 401 is formed on the head 101. The through hole 105 is circular. An annular groove 102 is formed on the inner wall 108 of the through hole 105 of the head 101 . The shape and size of the annular groove 102 should match the multi-stage slope spring ring 201, that i...

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PUM

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Abstract

A high-speed ratchet wrench is composed of a main body consisting of a head with a through hole and a turning ring fixed in said through hole. It features that a multi-step sloped spring ring is located on the inner surface of said through hole and several roller in contact with the smooth peripheral surface of said turning ring are radically arranged on said slopes one for one.

Description

technical field [0001] The invention belongs to a hardware tool for screwing hexagonal, square and other nuts, in particular to a fast ratchet wrench. Background technique [0002] A wrench is a common tool for tightening nuts. Before the present invention was made, various forms of wrenches had been publicly used on the market, such as combination wrenches, open-ended wrenches, ring wrenches, ratchet wrenches and the like. Because the ratchet wrench can work continuously, it is favored by consumers and develops rapidly. However, due to the defects of complex structure and high manufacturing cost in the existing ratchet wrench, popularization of the fast ratchet wrench is hindered. A common feature of this type of ratchet wrench is that the inner wall of the head is provided with a rack, such as the ratchet wrench involved in US Pat. No. 4,520,697 and No. 3,337,014. It utilizes the gear rack on the inner edge wall to cooperate with the bow-shaped teeth or the teeth on the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B13/46
Inventor 刘松土
Owner 刘松土
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