Title:
TORSIONAL DAMPER
Document Type and Number:
WIPO Patent Application WO/2018/109994
Kind Code:
A1
Abstract:
To improve the durability of a torsional damper. A rubber member 13 mounted between a damper hub 11 and an inertia ring 12 of a torsional damper 10 comprises a rubber composition of which EPDM is the main component, the rubber member 13 having a loss factor (tanδpi) of 0.27 or more at a surface temperature of 60±5°C. The surface maximum attainment temperature (Tmax) of the rubber member 13 during continuous excitation at the resonance point of the torsional damper 10 satisfies the formula Tmax = α × ln(tanδpi) + β ≤ 100 (in the formula, α represents a coefficient within the range of -46.9 to -60.4, and β represents a coefficient within the range of +9.4 to +27.7).
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Inventors:
ANDO AKIRA (JP)
TABEI SATOSHI (JP)
KATAKAI YUTO (JP)
CHIBA TAKAAKI (JP)
TABEI SATOSHI (JP)
KATAKAI YUTO (JP)
CHIBA TAKAAKI (JP)
Application Number:
PCT/JP2017/031724
Publication Date:
June 21, 2018
Filing Date:
September 04, 2017
Export Citation:
Assignee:
FUKOKU KK (JP)
International Classes:
F16F15/126; C08K3/04; C08L23/16; F16F15/12
Foreign References:
JPH06239909A | 1994-08-30 | |||
JPH11210832A | 1999-08-03 | |||
JP2001064460A | 2001-03-13 | |||
JP2014052058A | 2014-03-20 |
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (JP)
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