JPH0488031U

JPH0488031U -

Info

Publication number: JPH0488031U
Application number: JP40332790U
Authority: JP
Priority date: 1990-12-13
Filing date: 1990-12-13
Publication date: 1992-07-30

Description

[Brief explanation of the drawing]

第１図は本考案実施例のスプリングリテーナを
持つダイレクトクラツチが適応された自動変速機
の副変速機を示す断面図、第２図はスプリングリ
テーナを持つダイレクトクラツチを示す要部断面
図、第３図はスプリングリテーナを示す正面図、
第４図は第３図部の拡大図、第５図は本実施例
の摩擦締結要素が適用された副変速機付自動変速
機を示すスケルトン図、第６図は同自動変速機の
変速要素の作動時期を示す変速要素作動表、第７
図はスプリング径を小さくするスプリングリテー
ナの提案例を示す図である。Ａ_２……副変速機、Ｄ／Ｃ……ダイレクトクラ
ツチ（摩擦締結要素）、１……スプリングリテー
ナ、２……クラツチドラム（支持部材）、３……
クラツチデイスク、４……クラツチハブ、５……
クラツチプレート、６……クラツチピストン、７
……リターンスプリング、８……スナツプリング
、１ａ……サポートプレート部、１ｂ……フラツ
ト係止片（係止片）、１ｃ……センタリング片、
ｒ_１……センタリング片の内径、ｒ_２……スナツ
プリングの外径、Ｒ_１……センタリング片の曲率
、Ｒ_２……リターンスプリングの曲率。 Fig. 1 is a sectional view showing a sub-transmission of an automatic transmission to which a direct clutch with a spring retainer according to an embodiment of the present invention is applied; Fig. 2 is a sectional view of main parts showing a direct clutch with a spring retainer; The figure is a front view showing the spring retainer.
Fig. 4 is an enlarged view of the part in Fig. 3, Fig. 5 is a skeleton diagram showing an automatic transmission with an auxiliary transmission to which the friction engagement element of this embodiment is applied, and Fig. 6 is a shift element of the automatic transmission. Transmission element operation table showing the operation timing, No. 7
The figure shows an example of a proposed spring retainer that reduces the spring diameter. _A2 ... Sub-transmission, D/C... Direct clutch (frictional engagement element), 1... Spring retainer, 2... Clutch drum (support member), 3...
Clutch disc, 4...Clutch hub, 5...
Clutch plate, 6...Clutch piston, 7
... Return spring, 8 ... Snap spring, 1a ... Support plate part, 1b ... Flat locking piece (locking piece), 1c ... Centering piece,
_r1 ...inner diameter of the centering piece, _r2 ...outer diameter of the snap spring, _R1 ...curvature of the centering piece, _R2 ...curvature of the return spring.

Claims

[Scope of Claim for Utility Model Registration] 1. A friction engagement element piston that applies a coupling force to a friction plate, and a return spring that applies a biasing force in the direction of releasing the engagement to the friction engagement element piston,
The return spring is a single coil spring having a spring axis coaxial with the piston center axis, and one end is in contact with the friction engagement element piston,
A frictional coupling element for an automatic transmission, the other end of which is locked to a snap spring provided on a support member coaxial with the piston center axis and received by a spring retainer centered on the support member, wherein the spring The retainer has a support plate portion that receives a spring end, a locking piece that is locked to a snap spring, and a centering piece that guides a return spring, and the support plate portion has an outer diameter that approximately matches the outer diameter of the spring. The locking pieces are formed by extending radially inward from the inner periphery of the support plate portion, and the centering pieces extend axially from between adjacent locking pieces. A friction coupling element for an automatic transmission, characterized in that it is formed by extending a plurality of pieces, and the inner diameter of the centering piece is set smaller than the outer diameter of the snap spring. 2. The friction engagement element for an automatic transmission according to claim 1, wherein the centering piece has an arc shape when viewed from the axial direction, and has a curvature smaller than a curvature of the return spring.