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Screwdriver

A screwdriver and blade technology, applied in screwdrivers, instruments, display devices, etc., can solve the problems of screwdriver users and screw slippage.

Inactive Publication Date: 2008-06-11
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In production and life, when users use a screwdriver to loosen or lock screws, sometimes they don’t know or are uncertain in which direction the screwdriver should be turned hard to achieve the purpose of loosening or tightening the screw; especially when a locked screw is rusted or When the lock is too tight, it is difficult for the user to judge the correct direction of loosening the screw for a while, and the screw may be tightened due to the wrong direction, and even the screw may slip, causing trouble to the screwdriver user.

Method used

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Examples

Experimental program
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Embodiment Construction

[0010] Please refer to figure 1 , The first preferred embodiment of the screwdriver of the present invention includes a knife handle 1 , a knife shaft 2 and a spiral label 3 pasted on the knife shaft 2 . The knife bar 2 is fixedly connected to the knife handle 1, and its main body is cylindrical, and the end of the knife bar 2 away from the knife handle 1 shrinks into a sheet, which is used to turn external threads such as screws or bolts. The label 3 is pasted on the cylindrical surface of the cutter bar 2, and the direction of the helical stripes is right-handed.

[0011] When using the screwdriver to lock or loosen the screw, as long as the handle 1 is rotated around the axial direction of the screwdriver, the visual effect of the rotation of the label 3 can indicate whether the action of rotating the screwdriver is locking the screw or When the screw is loosened, that is, when the visual effect of the label 3 when it rotates is a spiral downward, it is a screw lock, and w...

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PUM

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Abstract

A screwdriver comprises a screwdriver handle, a screwdriver rod, further a turning indicating device, wherein the turning indicating device indicates that the action of turning the screwdriver is to lock a screw or to loose the screw. The turning indicating device which indicates the directions of locking screws and loosing screws is added to the screwdriver of the invention, which enables users of the screwdriver to be capable of conveniently and rapidly deciding that turning towards which direction can lock or loose the screws.

Description

technical field [0001] The invention relates to a screwdriver. Background technique [0002] In production and life, when users use a screwdriver to loosen or lock screws, sometimes they don’t know or are uncertain in which direction the screwdriver should be turned hard to achieve the purpose of loosening or tightening the screw; especially when a locked screw is rusted or When the lock is too tight, it is difficult for the user to judge the correct direction of loosening the screw for a while, and the screw may be tightened due to the wrong direction, and even the screw will slip, which brings trouble to the screwdriver user. Contents of the invention [0003] In view of the above, it is necessary to provide a screwdriver that is convenient for the user to determine the direction of force. [0004] A screwdriver includes a handle and a knife bar, and the screwdriver also includes a rotation indicator device, and the rotation indicator device indicates whether the action...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B15/00B25B23/00G09F7/00G09F7/16
CPCB25B15/02G09F3/00
Inventor 孙正衡
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD