Title:
DISK BRAKE
Document Type and Number:
WIPO Patent Application WO/2015/151618
Kind Code:
A1
Abstract:
A piston propulsion and maintenance mechanism (39) includes: a bottomed cylindrical member (46) which has an annular plate section (80) capable of contacting a bottom wall (19) of a cylinder (20) and a cylindrical section (81) connected to the outer periphery of the annular plate section (80) and covering a ball screw (44); and a clutch mechanism part (47) that, only when the ball screw (44) rotates in one direction, allows the bottomed cylindrical member (46) to rotate in the same direction. Because of the foregoing, once a piston (23) has been pressed against brake pads (2, 3) by the driving of a motor (32), the bottomed cylindrical member (46) is sandwiched and held so as to be unable to rotate between the annular plate section (80) and the bottom wall (19) by the counterforce on the ball screw (44), and rotation in a release direction of the ball screw (44) is restricted and a braking position is maintained by the clutch mechanism part (47).
Inventors:
TSURUMI SATORU (JP)
Application Number:
PCT/JP2015/054442
Publication Date:
October 08, 2015
Filing Date:
February 18, 2015
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16D65/18; F16D41/06; F16D121/24; F16D125/40; F16D125/46; F16D125/48; F16D127/06
Foreign References:
| JP2001130402A | 2001-05-15 | |||
| JPH07291120A | 1995-11-07 | |||
| JP2005233228A | 2005-09-02 |
Attorney, Agent or Firm:
HANABUSA PATENT & TRADEMARK OFFICE (JP)
A patent business corporation is a なぶさ patent trademark office. (JP)
A patent business corporation is a なぶさ patent trademark office. (JP)
Download PDF: