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Patent Searching and Data


Title:
BRAKE CYLINDER DEVICE AND DISC BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/020063
Kind Code:
A1
Abstract:
The present invention increases the braking force of a parking spring brake mechanism without enlarging a device and without substantial increase in cost. The subject of the present invention is a brake cylinder device (2) provided with a parking spring brake mechanism (40) wherein a first piston (43) moves in a prescribed braking operation direction (C). The brake cylinder device (2) is provided with a braking force transmission unit (37) having an inclined surface (38) that is inclined so as to press a brake output unit (7) in an advancement direction (A) by moving with the first piston (43) in the braking operation direction (C). The inclined surface (38) includes a first inclined surface (38a) that is provided to a distal-end-side portion, and a second inclined surface (38b) that is provided to a base-end-side portion and that is inclined more than the first inclined surface (38a) with respect to the advancement direction (A).

Inventors:
ASANO YOSHIO (JP)
OIE HIDEYUKI (JP)
Application Number:
PCT/JP2014/070644
Publication Date:
February 12, 2015
Filing Date:
August 05, 2014
Export Citation:
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Assignee:
NABTESCO CORP (JP)
International Classes:
F16D65/18; F16D55/2255; F16D121/06; F16D125/66
Foreign References:
JP2002227894A2002-08-14
JP2001521468A2001-11-06
JP2013087877A2013-05-13
JP2011137481A2011-07-14
JP2010164193A2010-07-29
Other References:
See also references of EP 3032128A4
Attorney, Agent or Firm:
ONEDEE IP PARTNERS (JP)
Patent business corporation Wang Dee IP partners (JP)
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