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Patent Searching and Data


Title:
TORSIONAL DAMPER
Document Type and Number:
WIPO Patent Application WO/2018/216567
Kind Code:
A1
Abstract:
In order to suppress the generation of abrasion powder and improve durability even when a rubber member having a high damping characteristic is used, the present invention provides a torsional damper 1 wherein the loss coefficient (tanδpi) of a rubber member is greater than 0.23 when the surface temperature of the rubber member is 60±5°C during torsional damper sympathetic vibration, the shear strain of the rubber member when press-fitted into the torsional damper is greater than 35% but less than 60%, the surface roughness at a gap portion 5 between a hub outer-circumferential surface 25A and an inertia ring inner-circumferential surface 3A is 4 μm to 30 μm, and reduced-friction regions 53 are provided on portions of the hub outer-circumferential surface 25A and the inertia ring inner-circumferential surface 3A forming a slanted gap portion 52 on the respective inlet sides of a rubber member 4, where the reduced-friction regions 53 have a smaller surface roughness than portions of the hub outer-circumferential surface 25A and the inertia ring inner-circumferential surface 3A forming a primary compression gap portion 51.

Inventors:
TABEI SATOSHI (JP)
KATAKAI YUTO (JP)
ANDO AKIRA (JP)
ARAKAWA KEIICHI (JP)
Application Number:
JP2018/018920
Publication Date:
November 29, 2018
Filing Date:
May 16, 2018
Export Citation:
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Assignee:
FUKOKU KK (JP)
International Classes:
F16F15/126; F16F15/12
Domestic Patent References:
WO2015012018A12015-01-29
Foreign References:
JPS639538U1988-01-22
JPH1144344A1999-02-16
JPH0285543A1990-03-27
JPH10196719A1998-07-31
JP2010151217A2010-07-08
Attorney, Agent or Firm:
YOSHIMURA, Katsuhiro (JP)
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