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Torque limiter

A technology of torque limiter and rotation limitation, which is applied in the direction of couplings, slip couplings, mechanical equipment, etc., and can solve the problem of not being able to quickly play the role of torque limiter, damage the commodity value of torque limiter, etc. question

Inactive Publication Date: 2012-03-21
TOK BEARING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the conventional torque limiter has such an advantage, since the protrusion is used for locking the needle roller, there is a play corresponding to the distance between the needle roller and the protrusion in the direction of rotation.
Therefore, when the direction of rotation changes, the function of the torque limiter cannot be quickly performed, which impairs the commercial value of the torque limiter using the annular spring member.

Method used

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  • Torque limiter
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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0026] refer to Figure 1 to Figure 3 , the torque limiter of the first embodiment will be described. figure 1 is the left side view of the torque limiter of the first embodiment; figure 2 for figure 1 A-A line sectional view of ; image 3 for figure 2 B-B line sectional view.

[0027] Such as image 3 As shown, the main components of the torque limiter include: a cylindrical outer part 2 (refer to figure 1 ); the inner member 4 (refer to figure 1 ); an annular spring member 6 made of a coil spring; and a circular cross-section member 8 as a rotation restricting member made of a round bar-shaped metal needle roller.

[0028] The outer member 2 is made of zinc die-casting, and a disk-shaped vertical portion 2b is formed near one end of a cylindrical main body 2a (see figure 2 ). In the above vertical part 2b (refer to figure 2 ), toward the inside of the main body 2a, a plurality of protrusions 2c are protruded in the axial direction, and the plurality of protrusi...

no. 2 approach

[0038] Second, refer to Figure 4 to Figure 6 , the torque limiter of the second embodiment in which the groove portion 10 is provided on the outer member 2 side will be described. Figure 4 is the left side view of the torque limiter of the second embodiment; Figure 5 for Figure 4 C-C line sectional view of ; Figure 6 for Figure 5 D-D line sectional view.

[0039] Such as Figure 6 As shown, an outwardly protruding disc-shaped vertical portion 4b is provided near one end of the inner member 4 (refer to Figure 5 ), in the vertical portion 4b (refer to Figure 5 ), toward the inner side of the inner member 4, a plurality of protrusions 4c are protruded in the axial direction, and the plurality of protrusions 4c are formed at predetermined intervals in the circumferential direction of the inner member 4. The curvature of the outer peripheral surface 4d facing the outer member 2 in each protrusion 4c is set to be substantially the same as the curvature of the inner pe...

no. 3 approach

[0045] In the above-mentioned first and second embodiments, the torque limiting mechanism composed of a single spring member 6 between the inner member 4 and the outer member 2 and a plurality of circular cross-section members 8 corresponding thereto is provided, but the rotation The moment limiting mechanism can also be made into a multi-connected structure in which the inner member 4 and the outer member 2 are arranged in multiple stages in the axial direction. refer to Figure 7 to Figure 9 , a torque limiter having a 2-connection torque limiting mechanism according to a third embodiment will be described. Figure 7 It is the left view of the multi-connected torque limiter of the third embodiment; Figure 8 for Figure 7 E-E line sectional view of ; Figure 9 for Figure 8 The F-F line section view.

[0046] Such as Figure 9 As shown, in this embodiment, a vertical portion 2b is formed in the center of the outer member 2 (see Figure 8 ), in the vertical portion 2b ...

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Abstract

The invention provides a torque limiter, which enables a large set toque in a small space and causes no play even if the rotating direction is changed. The torque limiter has an exterior component (2) and an interior component (4), wherein the interior component (4) is inserted into the internal-diameter portion of the exterior component (2) and is capable of freely rotating relative to the exterior component (2). A rotation limit component (8) is arranged between the external-diameter portion of the interior component (4) and the internal-diameter portion of the exterior component (2), and is limited in the rotating direction on any one of the interior component (4) and the exterior component (2). A groove portion (10) is formed in the other one of the interior component (4) and the exterior component (2) to imbed and hold the rotation limit component (8), which is pressed on the groove portion (10) by an annular spring component (6).

Description

technical field [0001] The present invention relates to a torque limiter, which is used to prevent excessive operating force from being applied to a motor or a curtain lift operation member, etc. Background technique [0002] As such a conventional torque limiter, it is known to include: an inner shaft having a convex line on the outer peripheral surface; a hollow cylindrical outer shaft having a first needle roller on a cutout provided on the outer peripheral wall; With the spring mechanism on the outer peripheral surface of the outer shaft, the inner shaft and the outer shaft can rotate relative to each other. If one of the inner shaft and the outer shaft is rotated, the torque will be transmitted to the inner shaft through the cooperation of the convex line and the first needle roller. And on the other side of the outer shaft, the force of the spring element is set so that if an excess torque is applied on one shaft, it will allow one side of the rib and the needle roller...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D7/10
Inventor 高桥大辅
Owner TOK BEARING CO LTD