Title:
BRAKE CYLINDER DEVICE AND UNIT BRAKE
Document Type and Number:
WIPO Patent Application WO/2010/070813
Kind Code:
A1
Abstract:
Provided is a brake cylinder device which can prevent unintentional loosening of a brake force of a spring brake means due to disengagement between engagement portions of a clutch mechanism.
The brake cylinder device (1) includes: a normal brake means (11) having a first piston (24); a spring brake means (12) having a second piston (27); a clutch mechanism (14); a spindle (15); and a spindle holding means (16). The spindle (15) is coupled to the first piston (24) so as to be rotatable around the axial direction. The clutch mechanism (14) is rotatably supported by the second piston (27) and has a nut member (33) screwed to the spindle (15) so as to make a connection or a disconnection between the spindle (15) and the second piston (27). The spindle holding means (16) regulates the rotation-enabled angle of the spindle (15) and holds the spindle (15) against the first piston while urging the spindle (15) in the direction opposite to the rotation direction for screw-in of the nut member (33) to the spindle (15).
Inventors:
ASANO YOSHIO (JP)
Application Number:
PCT/JP2009/006183
Publication Date:
June 24, 2010
Filing Date:
November 18, 2009
Export Citation:
Assignee:
NABTESCO CORP (JP)
ASANO YOSHIO (JP)
ASANO YOSHIO (JP)
International Classes:
F16D65/22; B61H13/00; F16D65/28
Foreign References:
| JP2008101766A | 2008-05-01 | |||
| JPS6119852B2 | 1986-05-19 | |||
| JP2001206213A | 2001-07-31 | |||
| JP2008101766A | 2008-05-01 |
Other References:
See also references of EP 2378154A4
Attorney, Agent or Firm:
ONEDEE IP PARTNERS (JP)
Patent business corporation Wang Dee IP partners (JP)
Patent business corporation Wang Dee IP partners (JP)
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