TORSIONAL VIBRATION DAMPING DEVICE

WIPO Patent Application WO/2012/073291

A1

[Problem] The present invention is characterized in providing a torsional vibration damping device configured so that the range of angle of relative torsion between a first rotation member and a second rotation member is increased to reduce large torsional vibration and so that the first rotation member and the second rotation member are prevented from being alternately twisted to the positive side and the negative side when the first rotation member and the second rotation member are displaced to the neutral position. A torsional vibration damping device (1) is provided with: a boss (5); a cam member (6) which is provided on the outer peripheral section of the boss (5), rotates integrally with the boss (5), and has a cam surface (6A); and arm members (19) which are each provided between the cam member (6) and a coiled spring (4), each have one end in contact with the cam surface (6A) and the other end in contact with the spring seat (16) of the coiled spring (4), and each pivot about a pin (18) bridged between disc plates (7, 8). The curvature of a cam surface (6A) is configured in such a manner that the curvature of the portion of the cam surface (6A) with which the one end of the arm member (19) is in contact when the boss (5) is twisted from the neutral position to the negative side relative to the disc plates (7, 8) is greater than the curvature of the portion of the cam surface (6A) with which the one end of the arm member (19) is in contact when the boss (5) is twisted to the positive side relative to the disc plates (7, 8).

TAKENAKA, Tetsuhiro (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
竹中　徹宏 (〒71 愛知県豊田市トヨタ町１番地トヨタ自動車株式会社内 Aichi, 〒4718571, JP)
KURIMOTO, Tomoyasu (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
栗本　智康 (〒71 愛知県豊田市トヨタ町１番地トヨタ自動車株式会社内 Aichi, 〒4718571, JP)
OKANO, Nobuhiko (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)

JP2010/007043

June 07, 2012

December 03, 2010

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TOYOTA JIDOSHA KABUSHIKI KAISHA (1 Toyota-cho, Toyota-shi Aichi, 71, 〒4718571, JP)
トヨタ自動車株式会社 (〒71 愛知県豊田市トヨタ町１番地 Aichi, 〒4718571, JP)
TAKENAKA, Tetsuhiro (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
竹中　徹宏 (〒71 愛知県豊田市トヨタ町１番地トヨタ自動車株式会社内 Aichi, 〒4718571, JP)
KURIMOTO, Tomoyasu (1 Toyota-cho, Toyota-sh, Aichi 71, 〒4718571, JP)
栗本　智康 (〒71 愛知県豊田市トヨタ町１番地トヨタ自動車株式会社内 Aichi, 〒4718571, JP)

F16F15/134; F16D13/64; F16F15/139

ARIGA, Gunichiro et al. (Yamada Building, 1-1-14 Shinjuku, Shinjuku-k, Tokyo 22, 〒1600022, JP)

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