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Cam clutch

A cam clutch and cam technology, applied in clutches, one-way clutches, mechanically driven clutches, etc., can solve problems such as time loss and poor responsiveness, and achieve the effect of improving stability and high responsiveness

Pending Publication Date: 2021-12-24
TSUBAKIMOTO CHAIN CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem of poor responsiveness due to time loss when switching the direction of rotation.

Method used

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  • Cam clutch
  • Cam clutch
  • Cam clutch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as Figure 1 ~ Figure 3 As shown, the cam clutch 100 according to the first embodiment of the present invention includes: an inner ring 110 and an outer ring 120 provided so as to be relatively rotatable on the same X-axis; Power transmission and cutoff are performed between the rings 120 .

[0037] The cam mechanism 130 is composed of a plurality of cams 140 disposed between the inner ring 110 and the outer ring 120 ; and a cam holder 150 that separates the plurality of cams 140 at predetermined intervals on the same circumference and keep in the circumferential direction; and the energizing unit, namely the ring-shaped hoop spring 135 , energizes each of the plurality of cams 140 so as to be in contact with the inner ring 110 and the outer ring 120 .

[0038] Such as Figure 4 As shown, the cam 140 has: a head 141 with a peripheral surface curved to form an arc in a radially outward manner and constituting an engaging surface 142 on the outer peripheral side of...

Embodiment 2

[0052] Figure 7 It is a cross-sectional view perpendicular to the X-axis showing a part of the configuration of an example of the cam clutch according to the second embodiment of the present invention.

[0053] The operation mode switching unit 180 is configured such that a sheet member 185 as a cam attitude changing portion is located between the heads 141 of adjacent cams 140, and the cam holder 150 is configured to abut against the legs 143 of the cams 140 to This cam clutch has the same configuration as the cam clutch 100 according to the first embodiment except that the load support point Sp is formed.

[0054] Such as Figure 8 As shown, the cam holder 150 has: a pair of annular plate portions 151, 152 facing each other in the axial direction; extend in the axial direction, and connect the annular plate portions 151, 152 to each other; The parts 151 and 152 are connected to each other. A protruding portion 158 extending in one direction in the circumferential direct...

Embodiment 3

[0059] Figure 9 It is a cross-sectional view perpendicular to the X-axis showing a part of the configuration of an example of the cam clutch according to the third embodiment of the present invention.

[0060] This cam clutch has the same structure as that of the first embodiment, except that a position restricting portion 125 is provided on the inner peripheral surface of the outer ring 120, which is a track ring on the radially farther side with respect to the plate member 185 constituting the cam attitude changing portion. The cam clutch 100 related to the above method has the same configuration.

[0061] The position restricting portions 125 are provided so as to protrude radially inward at positions arranged at equal intervals in the circumferential direction on the inner peripheral surface of the outer ring 120 . The position restricting portion does not need to be integrally formed with the outer ring 120 , and may be formed of other components and fixed to the outer ...

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PUM

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Abstract

The present invention provides a cam clutch that can switch an operation mode, improve the stability of a clutch operation, and obtain high responsiveness. The purpose is achieved by a configuration in which: an operation mode switching means (180) having a cam orientation change unit (185) for forcibly tilting each of a plurality of cams (140) biased by a biasing means to contact an inner ring (110) and an outer ring (120) is drivably provided independently of the rotational operation of the inner ring (110) and the outer ring (120); a load support point (Sp) is formed at a radial position between a load acting point (Ap) on the cam (140) by the cam orientation change unit (185) and a distal-side contact point (Ep) of the cam (140) with a bearing ring located on a radially distal side with respect to the load acting point (Ap); and a radial length (d1) between the load acting point (Ap) and the load support point (Sp) is made greater than a radial length (d2) between the load support point (Sp) and the distal-side contact point (Ep).

Description

technical field [0001] The present invention relates to a cam clutch configured to switch between a free state allowing relative rotational motion of an outer ring and an inner ring, and a locked state prohibiting relative rotational motion of the outer ring and inner ring. Background technique [0002] As a clutch for controlling transmission and cutoff of rotational force, there is known a two-way clutch capable of bidirectionally switching between driving and idling in a forward rotation direction and a reverse rotation direction. [0003] Some kind of two-way clutch is configured so that by tilting the cam or sprag, a locked state in which the relative rotation of the inner ring and the outer ring is prohibited (rotational force is transmitted), and the relative rotation of the inner ring and the outer ring is allowed Switching of the free state (cutting the rotational force) (for example, refer to Patent Document 1 and Patent Document 2). [0004] In addition, Patent D...

Claims

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Application Information

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IPC IPC(8): F16D41/08
CPCF16D41/088F16D41/069F16D41/084F16D41/07F16D41/08
Inventor 国松幸平中川荣一
Owner TSUBAKIMOTO CHAIN CO