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Torque restrictor

A technology of torque limiter and outer ring, used in couplings, slip couplings, mechanical equipment, etc., can solve the problem of insufficient rigidity of the arc part, and achieve the advantages of suppressing vibration, improving rigidity, and suppressing noise. Effect

Inactive Publication Date: 2010-08-25
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] On the other hand, although the improved torque limiter of said patent application can basically achieve the intended purpose, because the front end faces 57', 58, and 58' simply pushes against the side surface of the protrusion of the outer ring member (not shown) and the protrusion of the cover member 54, so the rigidity of the arc parts 57 and 58 is insufficient.

Method used

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Embodiment Construction

[0031] Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1 to 3 , the torque limiter 10 of the present embodiment is composed of an outer ring member 1 , an inner ring 2 , an annular cover member 3 and a coil spring 4 as in the conventional case. A boss portion 5 is provided at one end of the outer ring member 1 , and an inner diameter surface 6 having a larger diameter than the coil spring 4 is formed between the boss portion 5 and the open end at the other end. A shaft insertion hole 7 is provided at the center portion of the boss portion 5 , and an inner ring support portion 8 having a larger diameter than the shaft insertion hole 7 is provided inside the shaft insertion hole 7 .

[0032] An outer ring member protrusion 12 is provided on a part of the sleeve portion inner end surface 11 forming the stepped portion between the inner ring support portion 8 and the inner diameter surface 6 (see FIG. 3( a...

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PUM

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Abstract

The present invention provides a spring type torque limiter capable of preventing vibration and noise when used by increasing the rigidity of both end parts of a coil spring. Inclination angles are provided on side faces of an outer ring member projecting part (12) and a cover member projecting part (18) on which the both end parts of the coil spring (4) fitted on an outer diameter face of an inner ring (2) abut, respectively, so as to restrict movement of the both end parts to the outer diameter direction. This enhances the rigidity and suppresses vibration and noise of the coil spring (4).

Description

technical field [0001] The present invention relates to a spring-type torque limiter used in office equipment such as printers and copiers, and particularly relates to a preventive measure for preventing vibration of a coil spring and generation of abnormal sound. Background technique [0002] As a conventionally known spring-type torque limiter used in office equipment, etc., as shown in FIG. 5, it is composed of the following members, namely: an outer ring member 41; And is relatively rotatably supported on the sleeve portion 42 at one end of the outer ring member 41; the coil spring 44 is installed on the outer diameter surface of the inner ring 43 with a required interference; and the cover member 49 , which is fitted and fixed on the inner diameter surface of the outer ring member 41 at the other end thereof, closes between the inner diameter surface and the outer diameter surface of the inner ring 43 , and supports the inner ring 43 rotatably. The coil spring 44 has a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D7/00
Inventor 本多正明
Owner NTN CORP
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