CN2223173Y - 扳手 - Google Patents

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Publication number
CN2223173Y
CN2223173Y CN 95242750 CN95242750U CN2223173Y CN 2223173 Y CN2223173 Y CN 2223173Y CN 95242750 CN95242750 CN 95242750 CN 95242750 U CN95242750 U CN 95242750U CN 2223173 Y CN2223173 Y CN 2223173Y
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China
Prior art keywords
wrench
jaw
spanner
nut
length
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Expired - Fee Related
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CN 95242750
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English (en)
Inventor
童立云
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HONGYU DEVELOPMENT Co Ltd CHENGDU
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HONGYU DEVELOPMENT Co Ltd CHENGDU
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Priority to CN 95242750 priority Critical patent/CN2223173Y/zh
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Publication of CN2223173Y publication Critical patent/CN2223173Y/zh
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Abstract

本实用新型为一种可空转回位的固定扳手,属手工工具。该扳手包括手柄、长钳口、短钳口和与所扳六角螺帽边长相等的两个内钳口,长钳口和两个内钳口上各有一个其边长1/4至3/4的圆弧。短钳口的长度为相应六角螺帽一边长度的1/4至1/3,由于短钳口、长钳口及两个内钳口上三个圆弧的配合,该扳手可象棘轮扳手那样空转回位,其工效高于现行固定扳手。

Description

扳手
本实用新型为一种不用退出即可回位的固定扳手,属手工工具。现有的固定扳手在松紧螺帽时,大多是将钳口退出螺帽重卡回位,或着意退出部分重卡回位再行扳动,工作效率自然不高。
本实用新型的目的是要推出一种不用退出即可快速空转回位的固定扳手,以提高使用扳手的工效。该扳手以六图展示:图1为该扳手的形状。图2至图6为该扳手的工作原理。图中箭头所示为扳手的受力方向。如图1所示,该扳手按其形状和功能可分为手柄(1),长钳口(2),短钳口(3),内钳口(4)和内钳口(5)。短钳口(3)的长度(A至B)为相应六角螺帽一边长度的1/4至1/3。长钳口和两个内钳口分别有一个配合扳手空转回位的三个圆弧 其弧形长度为相应六角螺帽边长的1/4至3/4。
使用扳手扳螺帽时,扳手受顺时针方向的力,短钳口、长钳口及两个内钳口卡位螺帽的四个边,将螺帽往顺时针方向扳动(见图2)。回位时,扳手受逆时针方向的力,短钳口由于短于六角螺帽边长的1/2,不会卡住螺帽,再加上长钳口及两个内钳口上的三个圆弧的配合,在扳手回位时不阻滞螺帽棱角,满足了扳手回位时的空转要求,这样使扳手空转回位到图4所示位置,螺帽不会受扳力转动。当扳手回位到达图5所示位置时,由于扳手受到一个向螺帽方向的力,扳手就势运动至图6所示位置。短钳口、长钳口及两个内钳口卡住螺帽。再按顺时针方向用力便可继续旋紧螺帽。同理若将扳手翻转180使长短钳口换一个位置卡住螺帽往反时针方向用力,便可将螺帽松开。
从图2至图5可以看出,该扳手具有类似棘轮扳手的回转功能,其工效必然高于现行固定扳手。

Claims (1)

  1. 一种可空转回位的固定扳手,包括手柄(1),长钳口(2),短钳口(3),内钳口(4)和内钳口(5),其特征是在长钳口上和两个内钳口上各有一个其相应螺帽边长1/4至3/4的圆弧 (A至B)为相应六角螺帽一边长度的1/4至1/3。
CN 95242750 1995-02-14 1995-02-14 扳手 Expired - Fee Related CN2223173Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 95242750 CN2223173Y (zh) 1995-02-14 1995-02-14 扳手

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 95242750 CN2223173Y (zh) 1995-02-14 1995-02-14 扳手

Publications (1)

Publication Number Publication Date
CN2223173Y true CN2223173Y (zh) 1996-03-27

Family

ID=33883633

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 95242750 Expired - Fee Related CN2223173Y (zh) 1995-02-14 1995-02-14 扳手

Country Status (1)

Country Link
CN (1) CN2223173Y (zh)

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