Title:
ROTARY SHAFT DRIVE DEVICE
Document Type and Number:
Japanese Patent JP2015054376
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a rotary shaft drive device capable of downsizing rotary shaft direction dimensions.SOLUTION: A motor 7 has a stator 11 fixed on a casing 5; and a rotor 12 coaxially disposed in the inside of the stator 11, and fixed on a rotary shaft 6. A brake mechanism 8 has a pressure chamber 13a formed in an annular shape surrounding the rotary shaft 6, and elastically deforms an inner peripheral wall 18b of the pressure chamber 13a by supplying pressure to the pressure chamber 13a, thereby press-contacting an inner peripheral surface 18b' with the rotary shaft 6. The pressure chamber 13a is disposed between the rotor 12 of the motor 7 and the rotary shaft 6 so as to be at least partially overlapped with the motor 7 in a diametrical view.
Inventors:
YASUDA HIROSHI
HIGUCHI TAKAYUKI
INAZUMI YUKIHIRO
HIGUCHI TAKAYUKI
INAZUMI YUKIHIRO
Application Number:
JP2013190068A
Publication Date:
March 23, 2015
Filing Date:
September 13, 2013
Export Citation:
Assignee:
DMG MORI SEIKI CO LTD
International Classes:
B23Q16/04
Domestic Patent References:
| JP2009148840A | 2009-07-09 | |||
| JPH0680535U | 1994-11-15 |
Attorney, Agent or Firm:
Shimoichi 努