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Title:
DISC BRAKE AND PLANETRARY GEAR REDUCTION MECHANISM
Document Type and Number:
WIPO Patent Application WO/2019/198509
Kind Code:
A1
Abstract:
Provided is a disc brake comprising a planetary gear reduction mechanism which is satisfactory in cost and which improves reliability. A planetary gear reduction mechanism (45) for this disc brake (1a) has a sun gear (59) having an input gear section (56) to which rotation from a motor (39) is transmitted, and having an output gear section (58) which is extended in an axial direction from the center region, in a radial direction, of the input gear section (56); a plurality of planetary gears (60) meshing with the output gear section (58) of the sun gear (59); and an internal gear (61) meshing with the planetary gears (60). The internal gear (61) has a circular cylindrical support section (85) which rotatably supports the sun gear (59). As a result, during assembling, the axis of the sun gear (59) and the axis of the internal gear (61) can be substantially concentrically arranged, reliability can be increased, and cost is satisfactory.

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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)
YOSHIZU Rikiya (2520, Takaba,Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
ODAIRA Atsushi (2520, Takaba,Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
USUI Takuya (2520, Takaba,Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
Application Number:
JP2019/013265
Publication Date:
October 17, 2019
Filing Date:
March 27, 2019
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS,LTD. (2520, TakabaHitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
F16D65/18; B60T13/74; F16D55/224; F16H1/28; F16D121/24; F16D125/50
Foreign References:
JP2015155294A2015-08-27
JP2016125545A2016-07-11
JP2017133584A2017-08-03
Attorney, Agent or Firm:
HANABUSA PATENT & TRADEMARK OFFICE (Shin-Ochanomizu Urban Trinity, 2 Kandasurugadai 3-chome, Chiyoda-k, Tokyo 62, 〒1010062, JP)
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