Title:
DISK BRAKE AND PISTON BOOT
Document Type and Number:
WIPO Patent Application WO/2020/129583
Kind Code:
A1
Abstract:
This disk brake is provided with: a piston; a cylinder that has a bore part for housing the piston so as to be movable and has stepped parts formed on the opening end side of the bore part; and a piston boot that is disposed between the tip side of the piston and a small-diameter stepped part of the cylinder. The piston boot has: a large-diameter fitting part that includes an annular metal member and fits to the small-diameter stepped part; a bellows part that extends from the large-diameter fitting part, widens in diameter from the large-diameter fitting part to the outer circumferential side, and bends and extends toward the inner circumferential side from the large-diameter fitting part; and a small-diameter fitting part that is formed at an end of the bellows part so as to fit to the outer circumference of the piston. The large-diameter fitting part of the piston boot has, at a position on the bellows part side, a notch through which the metal member is partially exposed to the outside.
Inventors:
OSADA TAKAHITO (JP)
HAYASHI SHIGERU (JP)
WATANABE SHINYA (JP)
HAYASHI SHIGERU (JP)
WATANABE SHINYA (JP)
Application Number:
PCT/JP2019/046961
Publication Date:
June 25, 2020
Filing Date:
December 02, 2019
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F16D65/16; F16J3/04; F16J15/52; F16D121/04; F16D125/06
Foreign References:
| JP2004190841A | 2004-07-08 | |||
| JPS54111042A | 1979-08-31 | |||
| US5458344A | 1995-10-17 | |||
| JPH07190202A | 1995-07-28 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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