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Title:
BRAKE VALVE DEVICE
Document Type and Number:
Japanese Patent JP2017019316
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To integrate piping connections for output at a service brake side and a retarder side so as to eliminate a shuttle valve.SOLUTION: The brake valve device comprises: a main spool which controls pressure of pressure generating means responding to control input from a service brake control input means 4 so as to supply the pressure to a brake at a terminal end; a retarder block 6 which receives pressure from proportional decompression valve 9 for a retarder; a retarder spool 19 which transmits service brake control input to the main spool; and a retarder plunger 22 which when not receiving the pressure from the proportional decompression valve, presses forward the main spool together with the retarder spool, and when receiving the pressure from the proportional decompression valve, advances relatively to the retarder spool to press forward the main spool. The retarder spool comprises a stopper 59 which inhibits retreat of the retarder spool when receiving the pressure from the proportional decompression valve.SELECTED DRAWING: Figure 7

Inventors:
INANOBE KENSHIRO
Application Number:
JP2015136558A
Publication Date:
January 26, 2017
Filing Date:
July 08, 2015
Export Citation:
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Assignee:
MIYAKO JIDOSHA KOGYO KK
International Classes:
B60T15/04
Attorney, Agent or Firm:
中村 稔



 
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