Reverse input cut clutch, and torque transmission device and tension adjustment method thereof

CN122107027APending Publication Date: 2026-05-29NSK LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NSK LTD
Filing Date
2024-11-27
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In belt torque transmission devices, the reverse input cut-off function of the reverse input cut-off clutch makes tension adjustment difficult, making it impossible to maintain the position or posture of the driven part without power, and the drive pulley does not rotate completely when adjusting the tension of the annular belt.

Method used

A reverse input cut-off clutch was designed. By setting an observation hole in the side plate of the pressed component, a tool is inserted into the engaging part to move it radially inward, temporarily disabling the reverse input cut-off function and realizing tension adjustment.

Benefits of technology

This allows for appropriate adjustment of the tension of the annular belt without affecting the reverse input cut-off function, maintaining the position or posture of the driven part and improving the energy efficiency of the mechanical device.

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Abstract

The present application realizes a reverse input cut-off clutch capable of temporarily invalidating the reverse input cut-off function, a torque transmission device, and a tension adjustment method thereof. A pressed member (2) is provided with a main body portion (7) having a pressed surface (6) on an inner peripheral surface and a side plate portion (8) extending from an axial end portion of the main body portion (7) to an inner radial side. The side plate portion (8) has an observation hole (10) that penetrates, in the axial direction, a portion that coincides in radial position with a portion in the radial outer side surface of the engaging member (5) that is circumferentially offset from the pressed surface (31).
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Citation Information

Patent Citations

  • Belt drive mechanism

    JP2012135936A

  • Reverse input cutoff clutch and method for assembling same

    WO2023136149A1