CN2304510Y

CN2304510Y - Large torque spanner

Info

Publication number: CN2304510Y
Application number: CN 97220866
Authority: CN
Inventors: 谢智庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-07-28
Filing date: 1997-07-28
Publication date: 1999-01-20
Anticipated expiration: 2007-07-28

Abstract

The utility model relates to a torque wrench. The utility model is formed by that a shaft rod is arranged on an inner tube of a handle body; two springs are connected in series; the two springs are separated from each other by a thick gasket which is arranged between the two springs; the tail end of each spring pushes and bunts the gasket so that the gasket leans against the salient point of a conical surface. The utility model overcomes the defects that the springs which are too long are easily twisted, inaccurate display leads to oversize applied force while the utility model is used, and a screw bolt is fractured.

Description

A kind of torque spanner

A kind of torque spanner, it relates to the hand-held tool torque spanner, and it is a kind of torque spanner that improves torque value.

Existing torque spanner its medi-spring 10 as shown in Figure 1 is designed to a strip; Its end, is compeled mutually to close and is ordered about spring 10 and finish telescopic action with the end face of fixed leg 13 by the salient point 110 on the telescoping column 11 upper end conical surfaces against telescoping column 11 other ends pushing and pressing packing ring 12.Indicate torque spanner by the shift position that shows fixed point 14 again, pull the stressed size of mouth 15.But for spanner 1 is had than high pulling torque, therefore must add long handle height degree in being to use, thereby correspondingly cause the long mid portion of spring easily deformable and influence actual torque value accuracy.The excessive weak point that twists off bolt of the application of force often takes place in this spanner in the use and cause.

The purpose of this utility model provides a kind of will the driving and shows that spring changes by two sections and form, and overcomes because spring is long and causes distortion big, and cause and show inaccurate defective.And cause operation firmly excessive, twist off the shortcoming of bolt column.

The utility model is realized in the following way, on the interior pipe of torque spanner handle body, makes an axostylus axostyle, and two springs of series connection separate with thick washer in the middle of two springs in axostylus axostyle, and packing ring of spring tail end pushing and pressing leans on the salient point of awl cylinder.

The advantage that this utility model has is, it has overcome adopts whole spring and cause showing the defective of a little being forbidden because the long middle part of spring easily twists to change.Correspondingly improved spring sensitivity, made to show accurately, avoided because of the excessive shortcoming that causes bolt easily to twist off of the operation application of force.

Description of drawings:

Accompanying drawing 1, the torque spanner partial sectional view of known technology

Accompanying drawing 2, the relevant assembly of the utility model position axonometric exploded view

Accompanying drawing 3, the relevant assembly partial sectional view of the utility model

In conjunction with the accompanying drawings a kind of torque spanner of the utility model is described further below by embodiment: torque spanner 2 in accompanying drawing 2 and 3, are made up of replaceable driving end, fixed leg, handle and demonstration fixed point.An axostylus axostyle 22 is made in pipe 21 centers in handle handle body, penetrates two

springs

23,24 of serial connection above it, and wears a thick washer 25 in the middle of two springs.Packing ring 26 of spring 24 tail ends pushing and pressing leans on the summit of fixed point seat awl cylinder it.It is long to be used for changing single spring structure, and the distortion of generation changes, and can not correctly show torque value, and the application of force is excessive to be caused by the wrenching bolt phenomenon of rupture thereby make.

Claims

A kind of torque spanner, it is made up of driving end, fixed leg, handle, demonstration fixed point etc., it is characterized in that: go up a system axostylus axostyle (22) at the interior pipe (21) of handle body, on axostylus axostyle, separate with thick washer (25) in the middle of series connection two springs (23) (24), spring tail end pushing and pressing packing ring leans on fixed point seat awl cylinder salient point.