Title:
DAMPER SPRING DEVICE, FLYWHEEL, CLUTCH DISC, AND CLUTCH DISC FOR LOCKUP MECHANISM
Document Type and Number:
WIPO Patent Application WO/2010/016582
Kind Code:
A1
Abstract:
A damper spring device (60) is provided with first springs (63) and second springs (67), and each second spring (67) is held by a stopper (80) while being compressed by a preload. The preload to each second spring (67) is greater than a mounting load of each first spring (63). The first spring (63) and the second spring (67) have load-deflection characteristics adapted such that, when an axial load acting on the first spring (63) in the direction of compression thereof is not more than a load by which at least portions of the wire (63a) of the first spring (63) make close contact with each other, only the first spring (63) deflects and, when the axial load increases to a level greater than the load by which the at least portions of the wire (63a) of the first spring (63) make close contact with each other, both the first spring (63) and the second spring (67) deflect.
Inventors:
KANEYASU MITSUTOSHI (JP)
IWATA KAZUO (JP)
KATO NOBUHARU (JP)
IWATA KAZUO (JP)
KATO NOBUHARU (JP)
Application Number:
PCT/JP2009/064044
Publication Date:
February 11, 2010
Filing Date:
August 07, 2009
Export Citation:
Assignee:
NHK SPRING CO LTD (JP)
KANEYASU MITSUTOSHI (JP)
IWATA KAZUO (JP)
KATO NOBUHARU (JP)
KANEYASU MITSUTOSHI (JP)
IWATA KAZUO (JP)
KATO NOBUHARU (JP)
International Classes:
F16F3/10; F16D13/64; F16F15/123; F16F15/30; F16H45/02
Foreign References:
| JPS3413828Y1 | 1959-09-03 | |||
| JP2000240705A | 2000-09-05 | |||
| JPS5085751A | 1975-07-10 | |||
| JPH0473631U | 1992-06-29 | |||
| JP2005195119A | 2005-07-21 |
Attorney, Agent or Firm:
SUZUYE, Takehiko et al. (JP)
Takehiko Suzue (JP)
Takehiko Suzue (JP)
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