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Title:
DISC BRAKE AND PLANETARY GEAR DECELERATION MECHANISM
Document Type and Number:
WIPO Patent Application WO/2019/198272
Kind Code:
A1
Abstract:
This planetary gear deceleration mechanism of a disc brake has: a sun gear that has an input gear section to which rotation is transferred from a motor, and an output gear section provided extending in an axial direction from a radial direction center region of the input gear section; a plurality of planetary gears that mesh with the output gear section of the sun gear; and an internal gear that meshes with each of the planetary gears, wherein the internal gear has a cylindrical support section that supports the sun gear in a freely rotatable manner. Consequently, the axial center of the sun gear and the axial center of the internal gear can be positioned in a substantially concentric formation during assembly, reliability can be increased, and cost needs can be satisfied.

Inventors:
MITSUGI, Takashi (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
HIBI, Daisuke (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
SAKASHITA, Takayasu (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
WATANABE, Jun (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
Application Number:
JP2018/045594
Publication Date:
October 17, 2019
Filing Date:
December 12, 2018
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
F16D65/18; B60T13/74; F16D55/224; F16H1/28; F16D121/24; F16D125/50
Domestic Patent References:
WO2008053775A12008-05-08
Foreign References:
JP2014214830A2014-11-17
JP2002515573A2002-05-28
Attorney, Agent or Firm:
ONO, Shinjiro et al. (YUASA AND HARA, Section 206 Shin-Otemachi Bldg., 2-1, Otemachi 2-chome, Chiyoda-k, Tokyo 04, 〒1000004, JP)
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