Pulley device with embedded unidirectional clutch

A one-way clutch, built-in technology, applied in one-way clutches, clutches, hoisting devices, etc., can solve the problem of not being able to fully obtain the buffering effect of the torsion spring 18

Inactive Publication Date: 2015-11-18
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the case where the deceleration state and the speed-up state are switched in a short cycle such as the rotation fluctuation of the engine, there is a possibility that the traveling speed of the endless belt will change from The deceleration state is switched to the speed-up state, and the cushioning effect brought by the torsion spring 18 cannot be fully obtained

Method used

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  • Pulley device with embedded unidirectional clutch
  • Pulley device with embedded unidirectional clutch
  • Pulley device with embedded unidirectional clutch

Examples

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Embodiment Construction

[0039] [1 example of embodiment]

[0040] Figure 1 ~ Figure 3 One example of the embodiment of the present invention is shown. In addition, this example is characterized in that the structure of the sleeve 1b constituting the one-way clutch built-in pulley device and the assembly structure of the sleeve 1b are improved. The structure other than this characteristic part is substantially the same as that of the conventional pulley device with built-in one-way clutch. Therefore, the same reference numerals are assigned to the same parts as those in the conventional structure, and the following description will focus on the characteristic parts of this example.

[0041] The pulley device with a built-in one-way clutch of this example includes a sleeve 1b, a pulley 2, a one-way clutch 3, a torsion spring 18a corresponding to an elastic member, a pair of support bearings 4, and a ball bearing 23. The sleeve 1 b is a cylindrical member composed of a radially inner sleeve 24 and a...

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Abstract

The present invention addresses the problem of implementing a pulley device with an embedded unidirectional clutch, with which the influence of auxiliary automobile machinery on a rotary shaft due to fluctuations in the rotation of the engine can be sufficiently reduced. A sleeve (1b) is configured from an inner-diameter-side sleeve (24) and an outer-diameter-side sleeve (25), a unidirectional clutch (3) is provided between the outer-diameter-side sleeve (25) and a pulley (2), and a coiled torsion spring (18a) capable of transmitting torque between the inner-diameter-side sleeve (24) and the outer-diameter-side sleeve (25) is provided between these components. When the rotational speed of the pulley (2) becomes slower than the rotational speed of the outer-diameter-side sleeve (25), the inner-diameter-side sleeve (24) and the outer-diameter-side sleeve (25) rotate relative to one another due to the elastic force of the coiled torsion spring (18a), until the elastic force of the coiled torsion spring (18a) is released, after which the unidirectional clutch (3) becomes incapable of transmitting torque between the pulley (2) and the outer-diameter-side sleeve (25).

Description

technical field [0001] The present invention relates to a pulley device with a built-in one-way clutch used as a drive device for auxiliary equipment for automobiles such as an alternator. Background technique [0002] A pulley device with a built-in one-way clutch is used as a pulley device for driving auxiliary equipment for automobiles such as an alternator of an automobile. Figure 4 and Figure 5 A first example of a conventional pulley device with a built-in one-way clutch is shown. This conventional structure includes a sleeve 1, a pulley 2 arranged concentrically with the sleeve 1, a one-way clutch 3 arranged between the outer peripheral surface of the sleeve 1 and the inner peripheral surface of the pulley 2, and a pair of support bearings 4. . [0003] The sleeve 1 is made of steel and is formed into a substantially cylindrical shape by forging or the like, and is externally fitted and fixed to an end portion of a rotating shaft of an automotive auxiliary device ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/36F16D41/02F16D41/06F16D41/07F16D47/04F16F15/123
CPCF16D41/02F16D41/06F16D41/07F16D47/04F16F15/123F16H55/36F16D3/12F16D41/067F16D41/064F16D2041/0605F16H7/0827
Inventor 森博史
Owner NSK LTD
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