Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Ratchet screw driver

A screwdriver and ratchet technology, applied in the field of screwdrivers, can solve the problems of complex structure, inconvenient to hold by hand, etc., and achieve the effect of large number of teeth, simple and compact structure, and low noise

Inactive Publication Date: 2012-12-26
HANGZHOU GREAT STAR IND CO LTD
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved and the technical task proposed by the present invention are to overcome the defects of inconvenient hand holding and complicated structure in the prior art, and provide a ratchet screwdriver

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ratchet screw driver
  • Ratchet screw driver
  • Ratchet screw driver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0037] Such as figure 1 , 2 As shown, the ratchet screwdriver includes a handle 1 and a screwdriver 2, of which: see Figure 4 , Figure 11 , the front end of the handle 1 has a pawl seat 3, on which two opposite swingable pawls 4a, 4b are symmetrically arranged and a dial 5 for controlling the positions of the two pawls, the dial There are two shifting blocks 6a, 6b respectively corresponding to the two ratchets 4a, 4b on the 5; the tail of the ratchet 2 has a ratchet sleeve 7, and the inner wall of the ratchet sleeve 7 has internal ratchet teeth distributed in a ring shape, and the ratchet sleeve 7 sets On the pawl seat 3 and its inner ratchet is at least engaged with one of the two pawls 4a, 4b; and a control member that can be positioned on the handle 1 is used to change the position of the dial 5, specifically, The control member can be a sw...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a ratchet screw driver which aims at solving the problems that the existing orienting screw driver is inconvenient to hold by hand and has a complicated structure. The ratchet screw driver comprises a handle and a driver rod and is characterized in that the front end of the handle is provided with a pawl bed, wherein the pawl bed is provided with two pendular pawls arranged in the opposite directions and a shift part for controlling the position states of the two pawls, and the shift part is provided with two shift blocks which respectively correspond to the two pawls; the tail of the driver rod is provided with a ratchet sleeve, and the ratchet sleeve is sheathed on the pawl bed and is at least meshed with one of the two pawls; and an operating part which can be positioned on the handle is arranged and is used for changing the position of the shift part. By integrating all orienting structures at the front end of the handle, the ratchet screw driver has the advantages of simple and compact structure and convenient assembly and disassembly. Since a rotating sleeve is adapted to the outline wheel of the handle, the ratchet screw driver is kept adapted to the handle in shape in addition to facilitating gear shift, thereby facilitating being holden by hand for usage.

Description

technical field [0001] The invention relates to a screwdriver, in particular to a screwdriver which transmits torque through a ratchet wheel and a pawl. Background technique [0002] In the existing screwdrivers, the screwdriver is usually fixed with the handle. When in use, the hand holding the handle can only rotate a small angle. Therefore, when a part needs to be rotated continuously for many times, it needs to stop Let the hand rotate an angle in the opposite direction. Sometimes the hand-held screwdriver is temporarily withdrawn from the part to achieve the reverse rotation. In this way, the screwdriver needs to be aligned with the part again, and sometimes the other hand is used to assist the hand holding the handle to loosen. Open the handle to achieve reverse rotation. Obviously, these two methods are inconvenient and affect the working efficiency; it is also easy to screw the screw head. [0003] In order to overcome the above deficiencies, a directional manual s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B25B15/04B25B23/00B25B23/16
Inventor 仇建平
Owner HANGZHOU GREAT STAR IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com