Title:
BOLT PROVIDED WITH LOCKING FUNCTION
Document Type and Number:
WIPO Patent Application WO/2015/118702
Kind Code:
A1
Abstract:
A locking bolt that can be used in a wide range of work and that can reliably prevent loosening even when used at sites that experience severe temperature differences and severe vibration. The locking bolt (10) comprises a bolt main body (11), a diameter expanding member (31), and an auxiliary bolt (21). An axial hole (15) is formed in at least one end part of an axial center part of the bolt main body such that an end part of the axial hole forms a space (17) that is the shape of a truncated circular cone that widens toward the distal end. The truncated-circular-cone-shaped space is formed in an axial part (13) in which are formed one or more slits (18) that have the same slit width and that extend to a prescribed length from the distal end, each slit being shaped such that the width of a base part (a terminal part) thereof is wider than the slit width. The diameter expanding member (31) is arranged inside the space (17) in the bolt main body (11) and has a truncated-circular-cone-shaped side surface (32) that comes into contact with the inner wall of the space (17) and expands the diameter of the space (17). The auxiliary bolt (21) is inserted into the axial hole (15) that is provided to the bolt main body (11), moves the diameter expanding member (31) in the direction in which the diameter of the space (17) in the bolt main body (11) is expanded, and imparts diameter expanding force to the space (17) in the bolt main body (11).
Inventors:
HASEGAWA KENJI (JP)
Application Number:
PCT/JP2014/064647
Publication Date:
August 13, 2015
Filing Date:
June 02, 2014
Export Citation:
Assignee:
LOCK N BOLT CORP (JP)
International Classes:
F16B39/04; F16B39/02
Foreign References:
| JP2012127494A | 2012-07-05 | |||
| JPH04231713A | 1992-08-20 | |||
| JP2003239925A | 2003-08-27 | |||
| JPS6232218U | 1987-02-26 |
Attorney, Agent or Firm:
SATOH, TAKAHISA (JP)
Takahisa Sato (JP)
Takahisa Sato (JP)
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