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Torch limiter

A torque limiter and torque transmission technology, applied in the direction of couplings, slip couplings, belts/chains/gears, etc., can solve the problem of not being able to achieve miniaturization, and reduce assembly time and usage. , the effect of reducing costs

Inactive Publication Date: 2009-04-22
TOK BEARING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the overall miniaturization cannot be achieved

Method used

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Examples

Experimental program
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Embodiment Construction

[0040] figure 1- image 3 In the torque limiter of the first embodiment shown, the semi-hard magnetic body 2 is fixed on the first torque transmission part of the present invention, that is, the casing 1, and the permanent magnet 4 is fixed on the second torque transmission part, that is, the housing 1. on axis 3.

[0041] Axis 3 above is figure 2 The illustrated cylindrical member has an annular groove 3b and a pair of anti-rotation protrusions 3c, 3c on the outer circumference of a cylindrical main body 3a.

[0042] The permanent magnet 4 is also cylindrical, and its inner diameter is slightly larger than the outer diameter of the shaft 3 . In addition, a pair of notches 4a, 4a that engage with anti-rotation protrusions 3c, 3c provided on the cylinder main body 3a are formed at one end of the permanent magnet 4. As shown in FIG. In addition, the number of the above-mentioned anti-rotation protrusions 3c and notches 4a is not limited to two, and may be one, or three or mor...

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PUM

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Abstract

The invention relates to a torque limiter which can reliably fix semi-rigid magnet and reduce producing cost. Wherein, said torque limiter comprises the first torque transmission element (1) and the second torque transmission element (3) which can be inserted into the first torque transmission element (1) to rotate; at least one of first and second torque transmission elements is formed by non-magnetic material which is fixed with semi-rigid magnet (2); and the another torque transmission element (3) is arranged with permanent magnet (4) opposite to the semi-rigid magnet (2). And the invention is characterized in that: it has a couple of clampers (1a, 1c) for fixing the semi-rigid magnet (2) on one torque transmission element (1) and fix two axial ends of semi-rigid magnet (2).

Description

technical field [0001] The present invention relates to a torque limiter that relatively rotates only when a torque greater than a predetermined value acts by using magnetic force. Background technique [0002] As a torque limiter using magnetic force, for example, while the inner rotating body is relatively rotatably assembled in the outer rotating body, a permanent magnet is fixed to either the outer circumference of the inner rotating body or the inner circumference of the outer rotating body, and Fix the cylindrical semi-hard magnetic body to any other torque limiter. In such a torque limiter, the above-mentioned semi-hard magnetic body and the permanent magnet are arranged oppositely, and the above-mentioned permanent magnet magnetizes the above-mentioned semi-hard magnetic body to transmit a rotational force proportional to the area of ​​the hysteresis loop (see Patent Document 1-Japanese Patent Application Laid-Open No. 2004-308767). [0003] The brief principle of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H35/10F16D7/00F16D7/02
Inventor 秋场润一郎
Owner TOK BEARING CO LTD