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Title:
SHAFT AND FRAME USED FOR BADMINTON RACKET, TENNIS RACKET, GOLF CLUB, SNOWBOARD, OR BICYCLE
Document Type and Number:
WIPO Patent Application WO/2018/151009
Kind Code:
A1
Abstract:
Provided is a shaft or frame of a badminton racket, a tennis racket, or a bicycle, or a shaft of a golf club or snowboard, the shaft and the frame being able to maintain strength and increase flexibility. A shaft 12 is provided with: a cylindrical inner layer 15; and at least one coating layer 16 layered around an axis X on the outer side of the inner layer 15 so as to be concentric with the inner layer 15. The shaft 12 is characterized by being a carbon fiber-reinforced molded article in which at least one layer of the inner layer 15 and the coating layer 16 includes a composite material and a resin cured product that are arranged in the at least one layer. The shaft 12 is characterized in that the composite material has: a carbon fiber bundle in which a plurality of continuous carbon fibers are arranged; and carbon nanotubes attached to the surfaces of the carbon fibers.

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Inventors:
KOMUKAI Takuji (4-26 Sakuragawa 4-chome, Naniwa-ku, Osaka-sh, Osaka 22, 〒5560022, JP)
NAKAI Katsuyuki (4-26 Sakuragawa 4-chome, Naniwa-ku, Osaka-sh, Osaka 22, 〒5560022, JP)
TERUHIRA Hiromi (4-26 Sakuragawa 4-chome, Naniwa-ku, Osaka-sh, Osaka 22, 〒5560022, JP)
ONIZUKA Maki (4-26 Sakuragawa 4-chome, Naniwa-ku, Osaka-sh, Osaka 22, 〒5560022, JP)
UNO Toshikazu (900-1 Tsukanoyama, Nagaoka-sh, Niigata 23, 〒9495123, JP)
GOTO Taketoshi (900-1 Tsukanoyama, Nagaoka-sh, Niigata 23, 〒9495123, JP)
Application Number:
JP2018/004427
Publication Date:
August 23, 2018
Filing Date:
February 08, 2018
Export Citation:
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Assignee:
NITTA CORPORATION (4-26, Sakuragawa 4-chome Naniwa-ku, Osaka-sh, Osaka 22, 〒5560022, JP)
YONEX CO., LTD. (3-23-13 Yushima, Bunkyo-ku Tokyo, 43, 〒1138543, JP)
International Classes:
A63B49/10; A63B53/10; A63C5/12; B29C70/16; B32B1/08; B62K19/16; A63B102/02; A63B102/04; A63B102/32
Domestic Patent References:
WO2010041362A12010-04-15
Foreign References:
JP2012143515A2012-08-02
JP2016194165A2016-11-17
JP2012147846A2012-08-09
JP2008200272A2008-09-04
JP2009165703A2009-07-30
JP2006334305A2006-12-14
JP2007325823A2007-12-20
JP2004298357A2004-10-28
Attorney, Agent or Firm:
YOSHIDA Tadanori (411 La Tour Shinjuku, 15-1 Nishishinjuku 6-chome, Shinjuku-k, Tokyo 23, 〒1600023, JP)
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