Title:
FASTENING TORQUE GENERATING MECHANISM AND HYDRAULIC PULSE WRENCH
Document Type and Number:
Japanese Patent JP2019034389
Kind Code:
A
Abstract:
To provide a fastening torque generating mechanism which can improve fastening torque or a striking force without changing a size of the mechanism, or of which down-sizing can be achieved while keeping the fastening torque or the striking force.SOLUTION: This fastening torque generating mechanism comprises: an oil cylinder 8 in which a hydraulic oil is charged; a main spindle 9 which is so located in the oil cylinder 8 as to be relatively rotatable; and a pair of blades 10, 11 which are so fitted to the main spindle 9 as to be capable of freely advancing and retreating. The blades 10, 11 comprise legs 10b, 11b accommodated in groove holes 9b, 9c of the main spindle 9 respectively, the leg 10b of one blade 10 is so provided as to be deviated from the leg 11b of th other blade 11, and the legs 10, 11b do not interfere with each other.SELECTED DRAWING: Figure 1
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Inventors:
MITSUFUJI AKIRA
KAGEYAMA SHINICHI
YOSHIDA KENJI
NAGATO TOKUJI
KAGEYAMA SHINICHI
YOSHIDA KENJI
NAGATO TOKUJI
Application Number:
JP2017158583A
Publication Date:
March 07, 2019
Filing Date:
August 21, 2017
Export Citation:
Assignee:
FUJI AIR TOOL
International Classes:
B25B21/02
Domestic Patent References:
| JP2007326172A | 2007-12-20 | |||
| JP2000117650A | 2000-04-25 | |||
| JP2001341080A | 2001-12-11 | |||
| JPH06285770A | 1994-10-11 |
Attorney, Agent or Firm:
Shigeo Akiyama
Konosuke Kitagawa
Konosuke Kitagawa