Title:
SPEED CHANGE RATIO CONTROL VALVE FOR CONTINUOUSLY VARIABLE TRANSMISSION
Document Type and Number:
Japanese Patent JP3455986
Kind Code:
B2
Abstract:
PURPOSE: To prevent a control failure phenomenon of an actuator, especially of a stepping motor by reducing a load applied to the actuator by a spring for decrease in the whole load of the actuator.
CONSTITUTION: A spring 85 which applies energizing forces in a direction where a collar with a female screw 92 and a spool 84 are separated from each other in the valve body axial line direction to both of them between the collar with the female screw 92 and the spool 84 is disposed in a sleeve 83. The spool 84 is energized in the direction where it is separated from the stepping motor 88 by the spring 85, and the sleeve 83 which is connected with the collar with the female screw 92 through a pin member 87 and the collar with the female screw 92 is always energized in the stepping motor direction, receiving its reaction. It is thus possible to reduce torque load of the stepping motor 88 and improve speed change responsiveness.
Inventors:
politics
Koji Ohnishi
Koji Ohnishi
Application Number:
JP5903393A
Publication Date:
October 14, 2003
Filing Date:
March 18, 1993
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F16H15/38; F16H61/00; F16H63/30; (IPC1-7): F16H61/00; F16H15/38; F16H63/30
Domestic Patent References:
| JP61119866A | ||||
| JP539846A | ||||
| JP61124753A | ||||
| JP478365A |
Attorney, Agent or Firm:
Minoru Nakamura (6 outside)
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