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Patent Searching and Data


Title:
HYDRAULIC CONTROL DEVICE FOR AUTOMATIC TRANSMISSION
Document Type and Number:
Japanese Patent JP2019039484
Kind Code:
A
Abstract:
To provide a hydraulic control device for an automatic transmission which has a simple structure and can be downsized.SOLUTION: A control valve unit 11 is equipped with an accumulator 13 which has a cylinder 13a connected to a first connection oil path 11c communicating with a first range pressure supply path 11a and connected to a second connection oil path 11a communicating with a second range pressure supply path 11d; a piston composed of a first piston member 13b1 liquid-tightly dividing a first chamber 13c communicating with the first connection oil path 11c and a second piston member 13b2 liquid-tightly dividing a second chamber 13d communicating with the second connection oil path 11e, in the cylinder 13a; and a spring 13h which is disposed between the first piston member 13b1 and the second piston member 13b2 so as to energize the first piston member 13b1 toward a first surface 13a2 of the cylinder 13a and energize the second piston member 13b2 toward a second surface 13a3.SELECTED DRAWING: Figure 4

Inventors:
YOSHIMOTO RYOTA
Application Number:
JP2017161077A
Publication Date:
March 14, 2019
Filing Date:
August 24, 2017
Export Citation:
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Assignee:
AISIN SEIKI
International Classes:
F16H61/00; F16H59/08; F16H59/68
Attorney, Agent or Firm:
小林 脩
木村 群司
山本 喜一