JPS6353052U

JPS6353052U -

Info

Publication number: JPS6353052U
Application number: JP14583086U
Authority: JP
Priority date: 1986-09-25
Filing date: 1986-09-25
Publication date: 1988-04-09

Description

[Brief explanation of the drawing]

第１図はこの考案の第１実施例を示す断面図、
第２図は同じく可動フランジ及び可動ピストンを
示す斜視図、第３図は第２実施例を示す断面図で
ある。１：プーリ軸、２：固定フランジ、３：可動フ
ランジ、５：プーリ、６：Ｖベルト、７：油圧サ
ーボ、８：第１固定ピストン、８ｂ：固定シリン
ダ部、９：可動ピストン、９ｂ：凹部、９ｃ：凸
部、１０：第２固定ピストン、１２，１６，２２
：シールリング、１３，２３：第２可動シリンダ
部、１５：第１可動シリンダ部、１５ａ：凸部、
１５ｂ：凹部、１７：第１油圧室、１８：第２油
圧室。 FIG. 1 is a sectional view showing the first embodiment of this invention;
FIG. 2 is a perspective view showing the movable flange and the movable piston, and FIG. 3 is a sectional view showing the second embodiment. 1: Pulley shaft, 2: Fixed flange, 3: Movable flange, 5: Pulley, 6: V-belt, 7: Hydraulic servo, 8: First fixed piston, 8b: Fixed cylinder part, 9: Movable piston, 9b: Recessed part , 9c: Convex portion, 10: Second fixed piston, 12, 16, 22
: seal ring, 13, 23: second movable cylinder part, 15: first movable cylinder part, 15a: convex part,
15b: recess, 17: first hydraulic chamber, 18: second hydraulic chamber.

Claims

[Scope of utility model registration request]

A pulley with a variable effective diameter is configured by a fixed flange fixed to the pulley shaft and a movable flange movably arranged opposite to the fixed flange and driven by a hydraulic servo, and the hydraulic servo is movable. The first movable cylinder part provided on the flange and the inner peripheral edge are fixed to the pulley shaft, the intermediate part forms a fixed cylinder part, and the outer peripheral edge is slidably fitted to the inner peripheral surface of the first movable cylinder part. a first fixed piston, a movable piston whose inner circumferential edge is slidably fitted to the outer circumferential surface of the fixed cylinder portion of the first fixed piston, and a second movable piston whose inner circumferential edge is fixed to the pulley shaft and whose outer circumferential edge is cylindrical. The movable flange, the first movable cylinder part and the first fixed piston define a first hydraulic chamber; A second hydraulic chamber is defined by the piston, the movable piston, the second movable cylinder portion, and the second fixed piston, and the tip of the first movable cylinder portion engages with the outer circumferential portion of the movable piston by a concave portion and a convex portion. The first movable piston
A pulley device for a continuously variable transmission, characterized in that the pulley device contacts a movable cylinder portion so as to restrict rotation thereof.