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Marking torque wrench

A torque wrench, marking technology, applied in the direction of wrenches, screwdrivers, manufacturing tools, etc., can solve the problems of difficult to use operating tools, wear and tear of movable parts, failures, etc., to reduce mechanical contact parts, simplify components, and avoid wear and tear Effect

Active Publication Date: 2010-09-15
ISUZU MOTORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the above-mentioned conventional torque wrench using mechanical connection, it is difficult to reduce the size of the components in order to ensure the stroke of the stamp, and the number of components also increases, so there is a problem that it is difficult to use as an operation tool.
In addition, there are also problems such as failure due to wear of the movable part.
[0009] On the other hand, in the torque wrench using air pressure, the above-mentioned problem can be solved without using a mechanism for transmitting driving force such as a coupling mechanism, but there is a problem that an air pipe and an air supply source are required.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0052] Below, according to Figure 1 to Figure 3 The marking torque wrench according to an embodiment of the present invention will be described.

[0053] figure 1 It is a partial cross-sectional view showing the entirety of the mark wrench 1, and a head member 3 is rotatably attached to the front end side of a torque wrench body 2 having a cylindrical shape. A part of the head member 3 extends into the torque wrench 2 and is connected to one side of the toggle mechanism 10 provided in the torque wrench main body 2. The other side of the toggle mechanism 10 is connected to the torque wrench main body 2 side.

[0054] The toggle mechanism 10 is used to release the fixed state between the torque wrench body 2 side and the head member 3 side by a toggle action when tightening with a predetermined torque, and the head member 3 is relative to the tightening force applied to the torque wrench body 2 Without following, the head part 3 side performs a head shaking motion at a predetermin...

Embodiment approach 2

[0068] In the above embodiment, when the toggle is opened, the elastic force of the elastic member is used to perform the return operation of the marking mechanism. However, by studying the magnetic pole distribution of the starter magnet and the stamp pressing magnet, the elastic member is not used, but the magnet is used. The magnetic force of this can carry out the return movement of the seal mechanism. That is, by using magnets with different N / S poles in the radial direction, single-sided multi-pole magnets, etc., by changing the positional relationship of the magnets, the generated repulsive force and attractive force can be changed. This eliminates the need for a spring or the like for returning the seal to its original position when it is not operating.

[0069] according to Figure 4 , 5 This embodiment 2 will be described. In addition, the same reference numerals are assigned to the same structures as in the above-mentioned first embodiment, and the description thereof...

Embodiment approach 3

[0076] In each of the above embodiments, the magnets that interact with the magnetic force are arranged so that the opposing surfaces are approximately parallel, but when they are separated from each other, the magnetic forces acting on each other weaken. Therefore, by studying the shape of the magnets, the distance at which the magnetic forces act on each other can be kept constant. small. In addition, the same reference numerals are assigned to the same structures as those in the above-mentioned embodiment, and the description thereof is omitted.

[0077] That is, as Image 6 As shown, a bevel-shaped starting magnet 221 is installed on the starting arm 21, or as Figure 7 As shown, a stepped start magnet 222 is installed on the start arm 21. In the starting magnet 221, the magnetic surface is inclined so that the distance from the seal pressing magnet 221 is smaller as the distance from the seal pressing magnet 9 is smaller. On one side, a step 222a located below is provided. ...

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PUM

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Abstract

This aims to provide a marking torque wrench for performing a marking automatically without requiring any link mechanism or the like but by utilizing a displacement accompanying the action of a toggle mechanism. When a fastening force reaches a predetermined value, the toggle mechanism (10) acts, and a stamping mechanism (including a stamp pushing rod (7) and a marking stamp (5)) acts to perform the marking automatically. The marking torque wrench comprises a starting magnet (22) for moving in association with the displacement accompanying the action of the toggle mechanism (10), and a stamp pushing magnet (9) mounted on the stamping mechanism side for causing the magnetic forces of itself and the starting magnet (22) to act when the starting magnet (22) moves. The stamping mechanism is constituted such that the stamp-pushing magnet (9) moves with the magnetic forces acting between the starting magnet (22) and the stamp-pushing magnet (9) when the starting magnet (22) moves, thereby to perform the stamping action.

Description

Technical field [0001] The present invention relates to a marking torque wrench. When a bolt or a nut is tightened, when the tightening force reaches a predetermined value, the toggle mechanism operates to make the tightening force constant and follow the tightening of the predetermined tightening force. The marking is done automatically when the solid is completed. Background technique [0002] Among the torque wrenches used for tightening bolts or nuts, the following preset type torque wrenches are widely used: When the tightening force reaches the specified value, the toggle mechanism operates to make the tightening force constant, and no tightening occurs. Excessive or insufficient strength. By appropriately using this torque wrench, it is possible to perform bolt tightening operations with constant tightening force. [0003] On the other hand, as a countermeasure to prevent forgetting to tighten bolts in assembly processes such as production lines, there are many cases where...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B23/15B25B23/143
CPCB25B23/1422B25B23/15B25B23/1427
Inventor 长谷川英雄赤井和人山内克哉
Owner ISUZU MOTORS LTD