Title:
POWER TRANSMISSION SHAFT
Document Type and Number:
WIPO Patent Application WO/2019/181204
Kind Code:
A1
Abstract:
A propeller shaft (1) as a power transmission shaft of the present invention comprises a CFRP tube (6) formed in a cylindrical shape as a shaft member, wherein a helical layer portion (8) mainly bearing torsional strength and tensile strength is configured from carbon fibers of a first carbon fiber material having a relatively high tensile strength (or tensile modulus of elasticity), and wherein a first hoop layer portion (7) or a second hoop layer portion (9) that is disposed on at least one of the inside and outside in a radial direction with respect to a rotating axis Z of the helical layer portion (8) and that does not bear torsional strength or bending strength is configured from carbon fibers of a second carbon fiber material having a tensile strength (or tensile modulus of elasticity) lower than that of the first carbon fiber material. Thus, it becomes possible to select a relatively inexpensive material for the carbon fibers from which the hoop layer portion is configured, and to reduce the cost of the CFRP tube (6) for a propeller shaft.
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Inventors:
SUGIYAMA KENICHI (JP)
ISHIKURA KENICHIRO (JP)
ISHIKURA KENICHIRO (JP)
Application Number:
PCT/JP2019/002712
Publication Date:
September 26, 2019
Filing Date:
January 28, 2019
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16C3/02; B60K17/22; B60K17/30; F16D1/02; F16D1/027; F16D1/072
Foreign References:
| JP2001065538A | 2001-03-16 | |||
| JPH06200951A | 1994-07-19 | |||
| JP2010083253A | 2010-04-15 | |||
| JP2007177811A | 2007-07-12 | |||
| JP2005140207A | 2005-06-02 | |||
| JP2003001717A | 2003-01-08 | |||
| JP2000346044A | 2000-12-12 | |||
| JPH07205340A | 1995-08-08 | |||
| JP2003001717A | 2003-01-08 |
Other References:
See also references of EP 3770449A4
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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