Title:
TORSIONAL DAMPER
Document Type and Number:
WIPO Patent Application WO/2023/132226
Kind Code:
A1
Abstract:
This torsional damper is provided with a hub in which a boss, for being fixed to a rotational shaft such as an engine crankshaft, and an annular rim are provided unitarily via a plurality of stays. An annular vibration ring is coupled to an outer circumferential surface of the rim via an elastic body. The stays have a circumferential width dimension that does not exceed one-quarter of the length of the wavelength for the axial resonance frequency of the hub, and are thickened within a range in which the axial thickness dimension does not exceed one-half of the length of the wavelength for the axial resonance frequency of the hub. Thickening of the stays is realized, for example, by setting the axial thickness dimension to be at least one-quarter of the length of the wavelength for the axial resonance frequency of the hub. The stays have an axially inclined shape.
Inventors:
NARITA NOBUHIKO (JP)
SHIONUMA KOKI (JP)
SHIONUMA KOKI (JP)
Application Number:
PCT/JP2022/046805
Publication Date:
July 13, 2023
Filing Date:
December 20, 2022
Export Citation:
Assignee:
NOK CORP (JP)
International Classes:
F02B67/06; F16F15/126; F16H55/36
Foreign References:
| JP2017106563A | 2017-06-15 | |||
| JPH11109979A | 1999-04-23 | |||
| JPH05202987A | 1993-08-10 | |||
| JP2020041684A | 2020-03-19 | |||
| JPH05202987A | 1993-08-10 | |||
| JP2020041684A | 2020-03-19 | |||
| JPH05202987A | 1993-08-10 |
Attorney, Agent or Firm:
KIRIYAMA Hiroshi et al. (JP)
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