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Patent Searching and Data


Title:
BRAKE CYLINDER DEVICE AND DISC BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/148863
Kind Code:
A1
Abstract:
Provided is a brake cylinder device which comprises a gap adjustment mechanism, and is such that unsusceptibility to the influence of ambient environmental factors, such as temperature and humidity, is achieved at low cost, and that the radial dimensions of a cylinder body are downsized. A threaded shaft (24) which is connected to a brake output section (21) is housed inside a guide tube (25) that is mounted on a piston (22). A pusher spring (26) biases the threaded shaft (24) in the braking direction. A front stop (28) is disposed in such a way as to be capable of abutting a clutch nut (27) from the front side, said clutch nut (27) being threadably engaged with the tip section of the threaded shaft (24); and a first clutch (29) and a second clutch (32) are disposed in such a way as to be capable of abutting the clutch nut (27) from the rear side. An adjustment stop (30) is disposed in such a way as to be capable of moving relative to the clutch nut (27) and the guide tube (25) along the axial direction of the threaded shaft (24), and the movable range is restricted with respect to a cylinder body (20). One end of an adjustment spring (31) abuts the second clutch (32), whereto the adjustment stop (30) is fixed, with the result that the adjustment spring (31) biases the clutch nut (27) in the anti-braking direction.

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)
OZAWA, Yoichiro (NABTESCO CORPORATION 3-3, Takatsukadai 7-chome, Nishi-k, Kobe-shi Hyogo 71, 〒6512271, JP)
Application Number:
JP2011/061609
Publication Date:
December 01, 2011
Filing Date:
May 20, 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)
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)
International Classes:
F16D65/56; B61H15/00; F16D55/224; F16D65/14; F16D65/18
Foreign References:
JPS5213215A1977-02-01
JPS6170231A1986-04-11
JP2008261439A2008-10-30
JP2007131203A2007-05-31
Other References:
See also references of EP 2578899A4
None
Attorney, Agent or Firm:
ONEDEE IP PARTNERS (Shin-Osaka Ikushima Bldg, 1-3 Miyahara 5-chome, Yodogawa-k, Osaka-shi Osaka 03, 〒5320003, JP)
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Claims: