JPS60126734U

JPS60126734U - Hydraulic control device for automatic transmission for vehicles

Info

Publication number: JPS60126734U
Application number: JP1506184U
Authority: JP
Inventors: 邦裕岩月
Original assignee: トヨタ自動車株式会社
Priority date: 1984-02-06
Filing date: 1984-02-06
Publication date: 1985-08-26

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案による車輌用自動変速機の油圧制御装置
の一つの実施例をその要部についてのみ示す概略構成図
、第２図はサーボ油圧とアキュームレータ油圧の経時的
変化を示すグラフ、第３図はフォードクラッチの保合時
に於ける変速機の出力軸トルクの経時的変化を示すグラ
フである。１・・・フォードクラッチ、２・・・クラッチプレート
、３・・・クラッチディスク、４・・・サーボピストン
、５・・・サーボ室、６・・・戻しばね、７・・・油路
、１３・・・アキュームレータ、１１・・・ケーシング
、１２・・・大径シリンダ室、１３・・・小径シリンダ
室、１４・・・ピストン、１５・・・フランジ部、１６
・・・筒状部、１７・・・アキュームレータ室、１８・
・・背圧室、１９・・・ポート、２０・・・油路、２１
・・・圧縮コイルばね、２２・・・ガイドキャップ、２
３・・田ツクナツト、２４・・・内筒部、２５・・・ボ
ール、２６・・・ばね、２７・・・係合孔。Fig. 1 is a schematic configuration diagram showing only the essential parts of one embodiment of the hydraulic control device for a vehicle automatic transmission according to the present invention; Fig. 2 is a graph showing changes over time in servo oil pressure and accumulator oil pressure; FIG. 3 is a graph showing changes over time in the output shaft torque of the transmission when the Ford clutch is engaged. DESCRIPTION OF SYMBOLS 1... Ford clutch, 2... Clutch plate, 3... Clutch disc, 4... Servo piston, 5... Servo chamber, 6... Return spring, 7... Oil path, 13 ...Accumulator, 11...Casing, 12...Large diameter cylinder chamber, 13...Small diameter cylinder chamber, 14...Piston, 15...Flange portion, 16
... Cylindrical part, 17... Accumulator chamber, 18.
...Back pressure chamber, 19...Port, 20...Oil passage, 21
... Compression coil spring, 22 ... Guide cap, 2
3...Tatsuknut, 24...Inner cylinder part, 25...Ball, 26...Spring, 27...Engagement hole.

Claims

[Scope of utility model registration request]

For a vehicle, which has a gear transmission mechanism and a hydraulically operated friction engagement device, and is configured to switch gears of the gear transmission mechanism in response to engagement or disengagement of the friction engagement device. A hydraulic control device for an automatic transmission that supplies hydraulic pressure to the friction engagement device □ It has a cylinder-piston type accumulator connected in the middle of the oil path, and the accumulator is movably provided in the cylinder chamber. a piston defining an accumulator chamber on one side; a spring biasing the piston toward a stroke end on the accumulator chamber side; a hydraulic control device comprising: a resistance applying means that engages the piston only when the piston is in the stroke position and provides a resistance of a predetermined value or more to the movement of the piston from the stroke end to the other stroke end. .