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Patent Searching and Data


Title:
BRAKE CYLINDER DEVICE AND DISC BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/005149
Kind Code:
A1
Abstract:
Disclosed is a compact brake cylinder device which, while avoiding increases in the size of the device, is capable of increasing the braking force outputted from a brake output unit which moves together with a rod. A rod (22) is provided inside of a cylinder body (20) so as to freely move in the advancing and retracting directions of the cylinder shaft direction. A piston (24) partitions a pressure chamber (44) inside of the cylinder body (20), surrounding the circumference of the rod (22), and moves in a linear direction parallel to the movement direction of the rod (22). By supplying a pressure fluid to the pressure chamber (44), the piston (24) resists the biasing force of a biasing spring (23) and moves in the retracting direction relative to the cylinder body (20). At that time, a force-multiplication mechanism (25) converts the linear direction drive force generated by the piston (24) to a rotational direction, moves the rod (22) in the advancing direction, and multiplies the drive force from the piston (24) to act on the rod (22). A brake output unit (21) moves together with the rod (22) in the advancing direction and outputs a braking force.

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Inventors:
OHNO, Tomoya (NABTESCO CORPORATION 3-3, Takatsukadai 7-chome, Nishi-k, Kobe-shi Hyogo 71, 〒6512271, JP)
大野智也 (〒71 兵庫県神戸市西区高塚台7丁目3番地の3ナブテスコ株式会社神戸工場内 Hyogo, 〒6512271, JP)
Application Number:
JP2011/064883
Publication Date:
January 12, 2012
Filing Date:
June 29, 2011
Export Citation:
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Assignee:
NABTESCO CORPORATION (7-9 Hirakawacho 2-chome, Chiyoda-ku Tokyo, 93, 〒1020093, JP)
ナブテスコ株式会社 (〒93 東京都千代田区平河町二丁目7番9号 Tokyo, 〒1020093, JP)
OHNO, Tomoya (NABTESCO CORPORATION 3-3, Takatsukadai 7-chome, Nishi-k, Kobe-shi Hyogo 71, 〒6512271, JP)
International Classes:
F16D55/224; F16D65/14; F16D65/18; F16D65/74
Foreign References:
JP2009138826A
JP2008261439A
JP2007131203A
JP2006315422A
Attorney, Agent or Firm:
ONEDEE IP PARTNERS (Shin-Osaka Ikushima Bldg, 1-3 Miyahara 5-chome, Yodogawa-ku, Osaka-shi Osaka 03, 〒5320003, JP)
Download PDF:
Claims: