Title:
FASTENING DEVICE
Document Type and Number:
Japanese Patent JP2016217392
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To increase fastening force in a fastening device such as a one-side bolt and the like.SOLUTION: A fastening device 1 has: a holding portion 10 disposed at a depth side; first and second rotary portions 15, 20 disposed at a front side and relatively rotatable to each other; a power transmission portion 25 disposed between the first and second rotary portions 15, 20 and the holding portion 10 for transmitting axial force; a depth-direction seat portion 21 formed on at least one of the first rotary portion and the second rotary portion; a depth-side engagement portion 60 axially held between the power transmission portion 25 and the holding portion 10; and a screwing portion 30. The front-direction seat portion 64 of the depth-side engagement portion 60 is moved radially outward to be projected radially outward by axial approach of the holding portion 10 and the power transmission portion 25, and engaged with a fastened member H by utilizing the front-direction seat portion 64 and the depth-direction seat portion 21.SELECTED DRAWING: Figure 1
Inventors:
MICHIWAKI YUTAKA
Application Number:
JP2015100655A
Publication Date:
December 22, 2016
Filing Date:
May 18, 2015
Export Citation:
Assignee:
NEJILAW INC
International Classes:
F16B13/04
Domestic Patent References:
| JPS5582812A | 1980-06-21 | |||
| JPS4970425A | 1974-07-08 | |||
| JP2002130231A | 2002-05-09 | |||
| JPH07331745A | 1995-12-19 |
Attorney, Agent or Firm:
Masashi Sahara
Kazuki Yokota
Kazuki Yokota
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