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Patent Searching and Data


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.

Inventors:
SUGIYAMA, Kenichi (7-1, Onna 4-chome, Atsugi-sh, Kanagawa 10, 〒2438510, JP)
ISHIKURA, Kenichiro (7-1, Onna 4-chome, Atsugi-sh, Kanagawa 10, 〒2438510, JP)
Application Number:
JP2019/002712
Publication Date:
September 26, 2019
Filing Date:
January 28, 2019
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
F16C3/02; B60K17/22; B60K17/30; F16D1/02; F16D1/027; F16D1/072
Foreign References:
JP2001065538A2001-03-16
JPH06200951A1994-07-19
JP2010083253A2010-04-15
JP2007177811A2007-07-12
JP2005140207A2005-06-02
JP2003001717A2003-01-08
JP2000346044A2000-12-12
JPH07205340A1995-08-08
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (Ekisaikai Bldg. 1-29, Akashi-cho, Chuo-k, Tokyo 44, 〒1040044, JP)
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