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Patent Searching and Data


Title:
SPRING CLUTCH
Document Type and Number:
Japanese Patent JP2019035506
Kind Code:
A
Abstract:
To prevent the generation of abnormal sound by suppressing the occurrence of stick slip when an input side member of a spring clutch idles.SOLUTION: On an inner peripheral surface of a counterbore portion 4a of a control member 4 slidably fitted in an outer periphery of an input side member 1, a diameter expansion regulating portion 4c which opposes to a position making 90° with a base end portion of a hook portion 3a in a winding direction of a coil spring 3 wound around the input side member 1 is integrally formed. Therefore, when the control member 4 is restrained so as not to rotate and the input side member 1 is idled, the diameter expansion amount of a first winding on the input side of the coil spring 3 becomes small and slide resistance becomes large, and the idling torque of the input side member 1 in a dynamic friction state with the coil spring 3 becomes large and changes in the idling torque when shifting from a static friction state to the dynamic friction state becomes small, so that the generation of abnormal sound can be prevented by suppressing the occurrence of stick slip.SELECTED DRAWING: Figure 2

Inventors:
ITOMI SHOJI
FURUHASHI KOTA
Application Number:
JP2018153186A
Publication Date:
March 07, 2019
Filing Date:
August 16, 2018
Export Citation:
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Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16D13/08; F16D41/20; F16D63/00; F16D67/02
Attorney, Agent or Firm:
Naoya Kamata
Bunji Kamada
Yaichiro Nakatani