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Title:
STAKING BOLT
Document Type and Number:
WIPO Patent Application WO/2018/220887
Kind Code:
A1
Abstract:
This staking bolt comprises a head section 10 and a shaft section 11 on which an external thread 12 is formed. A ring-shaped protrusion 20 and a ring groove 21, which is located on the head-section side of the ring-shaped protrusion 20, are formed on the upper end of the shaft section 11. The head section 10 is flat, and a rotation-prevention protrusion 14, which is provided with a plurality of radial arm sections 15, protrudes at a thickness of t on the seating surface 13 of the head section. The minimum diameter D between the arm sections 15 is greater than the outer diameter d of the ring-shaped protrusion 20, and t*(D-d)/2, which is the vertical cross-sectional area A of the minimum diameter section of the rotation-prevention protrusion 14, is greater than or equal to the vertical cross-sectional area of the ring groove 21.

Inventors:
HOSHINO Naoki (1-8, Takahashi, Oguchi-cho, Niwa-gu, Aichi 98, 〒4800198, JP)
KOGA Kazuhiro (1-8, Takahashi, Oguchi-cho, Niwa-gu, Aichi 98, 〒4800198, JP)
FUJIMOTO Yukinori (1-8, Takahashi, Oguchi-cho, Niwa-gu, Aichi 98, 〒4800198, JP)
Application Number:
JP2017/043502
Publication Date:
December 06, 2018
Filing Date:
December 04, 2017
Export Citation:
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Assignee:
AOYAMA SEISAKUSHO CO., LTD. (1-8 Takahashi, Oguchi-cho Niwa-gu, Aichi 98, 〒4800198, JP)
International Classes:
F16B35/04; F16B35/00; F16B37/00; F16B39/282
Domestic Patent References:
WO2015005347A12015-01-15
Foreign References:
US4637766A1987-01-20
JP2013244903A2013-12-09
US20030108400A12003-06-12
JP2011241905A2011-12-01
US20140003883A12014-01-02
US5797175A1998-08-25
US3967669A1976-07-06
Attorney, Agent or Firm:
NAJIMA PATENT OFFICE (Nagoya Daini Saitama Building 4F, 2-28 Meieki 4-chome, Nakamura-ku, Nagoya-sh, Aichi 02, 〒4500002, JP)
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