Title:
ピストンシール部材及び該ピストンシール部材を用いたディスクブレーキ
Document Type and Number:
Japanese Patent JP6503312
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a piston seal member capable of reducing environmental load and having excellent high-temperature characteristic and durability, and a disc brake using the piston seal member.SOLUTION: A piston seal member 8 liquid-tightly and slidably holds a cylinder hole 6a and a piston 5 sliding in the cylinder hole 6a. The piston seal member 8 is composed of a rubber composition including 0.1 pts.mass-60 pts.mass of at least one of oxidized cellulose fiber and cellulose nanofiber to 100 pts.mass of rubber. The rubber includes at least one of ethylene-propylene rubber and styrene-butadiene rubber. An average value of a fiber diameter of the oxidized cellulose fibber is 10 μm-30 μm. An average value of a fiber diameter of the cellulose nanofiber is 1 nm-200 nm.SELECTED DRAWING: Figure 2
Inventors:
Kenichi Niihara
Keiichi Kawamoto
Hiroyuki Ueki
Keiichi Kawamoto
Hiroyuki Ueki
Application Number:
JP2016058628A
Publication Date:
April 17, 2019
Filing Date:
March 23, 2016
Export Citation:
Assignee:
Nissin Industry Co., Ltd.
International Classes:
F16J15/20; C08K7/02; C08L1/02; C08L9/06; C08L23/16; F16D65/16; F16J15/18
Domestic Patent References:
| JP2008223780A | ||||
| JP2015098576A |
Foreign References:
| WO2014115560A1 |
Attorney, Agent or Firm:
Yukio Fuse
Mitsue Obuchi
Mitsue Obuchi