JPS6446537U

JPS6446537U -

Info

Publication number: JPS6446537U
Application number: JP14333587U
Authority: JP
Priority date: 1987-09-17
Filing date: 1987-09-17
Publication date: 1989-03-22
Also published as: JPH0433462Y2

Description

[Brief explanation of the drawing]

第１図ないし第４図は本考案の一実施例による
ラビニヨ式４速自動変速機のクラツチ構造を説明
するための図であり、第１図はその要部の断面側
面図、第２図は第１図の―線断面図、第３図
は該クラツチ構造が適用された自動変速機の断面
平面図、第４図はその模型式図である。図において、１はトルクコンバータ、１ｂは入
力軸、２は変速歯車装置、３は入力経路切り換え
装置、８はキヤリア、９はリングギヤ、１１ａは
アウタドラム、１１ｂは摩擦板、１１ｃは第２ピ
ストン（クラツチ作動ピストン）、１１ｄは押圧
ボス部、１７は入力部材、１７ａはシリンダ部、
２０はハブ部材、２０ｂはフランジ部、２０ｃは
貫通孔、２４ａは第２付勢ばね、Ｃ１〜Ｃ３は第
１〜第３クラツチ、Ｐ１，Ｐ２は第１、第２ピニ
オンギヤ、Ｓ１，Ｓ２は第１、第２サンギヤであ
る。 1 to 4 are diagrams for explaining the clutch structure of a Ravigneaux 4-speed automatic transmission according to an embodiment of the present invention, FIG. 1 is a cross-sectional side view of the main parts, and FIG. FIG. 1 is a sectional view taken along the line ``--'', FIG. 3 is a sectional plan view of an automatic transmission to which the clutch structure is applied, and FIG. 4 is a schematic diagram thereof. In the figure, 1 is a torque converter, 1b is an input shaft, 2 is a transmission gear, 3 is an input path switching device, 8 is a carrier, 9 is a ring gear, 11a is an outer drum, 11b is a friction plate, 11c is a second piston (clutch) 11d is a pressing boss portion, 17 is an input member, 17a is a cylinder portion,
20 is a hub member, 20b is a flange, 20c is a through hole, 24a is a second biasing spring, C1 to C3 are first to third clutches, P1 and P2 are first and second pinion gears, S1 and S2 are third 1. Second sun gear.

Claims

[Scope of utility model registration request]

A vehicle equipped with a transmission gear device consisting of a planetary gear, and an input path switching device having a plurality of clutches for selectively inputting an output from a torque converter to a carrier that pivotally supports a sun gear or pinion gear of the transmission gear device. In a clutch structure for an automatic transmission, an input member having a cylinder portion is fixed to an input shaft, a hub member having a smaller diameter than the cylinder portion is disposed in front of the input member, and a flange is formed at the rear end of the hub member. A clutch actuating piston is connected to the tip of the input member, a number of friction plates are disposed between the hub member and an outer drum disposed outside of the hub member, and a clutch actuating piston is connected to the hub member to press the friction plates together. Pressure bosses are disposed within the cylinder portion of the input member, and protrude from the peripheral edge of the piston at predetermined pitches to face the friction plate through the through holes formed in the flange portion. 1. A clutch structure for an automatic transmission for a vehicle, characterized in that a biasing spring for biasing the piston to a rearward end position is disposed between the parts and between the flange part and the piston.