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Patent Searching and Data


Title:
BRAKE CYLINDER DEVICE AND DISK BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/081005
Kind Code:
A1
Abstract:
Provided is a brake cylinder device such that there exists a gap adjustment mechanism, that it is possible to prevent, at low cost, susceptibility to the influence of ambient environmental factors such as temperature and humidity, and that the radial dimensions of a cylinder body can be made compact. A threaded shaft (24) connected to a brake output section (21) is placed inside a guide tube (25) installed in a piston (22). A pressure spring (26) applies force to the threaded shaft (24) in the braking direction. A clutch nut (27) threadably engages with the tip portion of the threaded shaft (24). A front clutch (28) and a rear clutch (29) are disposed in such a way as to be capable of abutting the front side and the rear side, respectively, of the clutch nut (27). A 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 the cylinder body (20). An adjustment spring (31) is provided in such a way that one end thereof abuts the stop (30), and that it is possible to apply force to the clutch nut (27) in the anti-braking direction.

Inventors:
OHNO TOMOYA (JP)
OZAWA YOICHIRO (JP)
NAKAMURA JYOICHI (JP)
Application Number:
JP2010/072191
Publication Date:
July 07, 2011
Filing Date:
December 10, 2010
Export Citation:
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Assignee:
NABTESCO CORP (JP)
OHNO TOMOYA (JP)
OZAWA YOICHIRO (JP)
NAKAMURA JYOICHI (JP)
International Classes:
F16D65/56; B61H15/00; F16D55/224; F16D65/18
Foreign References:
JPS5213215A1977-02-01
JPS6170231A1986-04-11
JP2008261439A2008-10-30
JP2007131203A2007-05-31
JP2007131203A2007-05-31
JPS6159158U1986-04-21
Other References:
See also references of EP 2520819A4
Attorney, Agent or Firm:
ONEDEE IP PARTNERS (JP)
Patent business corporation Wang Dee IP partners (JP)
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