JPH0369740U

JPH0369740U -

Info

Publication number: JPH0369740U
Application number: JP13201889U
Authority: JP
Priority date: 1989-11-13
Filing date: 1989-11-13
Publication date: 1991-07-11

Description

[Brief explanation of the drawing]

第１図は、第２図の実施例の油圧シリンダ要部
を説明する断面図である。第２図は、本考案の一
実施例のベルト式無段変速機の構成を説明する骨
子図である。第３図は、第２図の副変速機のレン
ジと摩擦係合装置との関係を説明する図である。１２……ＣＶＴ（ベルト式無段変速機）、２６
……入力軸（回転軸）、３４……出力軸（回転軸
）、３６，３８……可変プーリ、４０……伝動ベ
ルト、４２，４４……固定回転体、４６，４８…
…可動回転体、５０，５２……油圧シリンダ（油
圧駆動装置）、８０……外周壁、８２……円筒部
、８４……フランジ部、８６……インナーシリン
ダ、８８……アウターシリンダ、９０……ピスト
ン部材、１００ａ，１００ｂ，１００ｃ……シー
ル部材、１１６……内周面、１１８……突き合わ
せ面、１２２……円筒状突起、１２４……凹所、
１２６……面取り部（テーパ状案内面）。 FIG. 1 is a sectional view illustrating the main parts of the hydraulic cylinder of the embodiment shown in FIG. 2. FIG. FIG. 2 is a schematic diagram illustrating the configuration of a belt type continuously variable transmission according to an embodiment of the present invention. FIG. 3 is a diagram illustrating the relationship between the range of the sub-transmission shown in FIG. 2 and the frictional engagement device. 12...CVT (belt type continuously variable transmission), 26
...Input shaft (rotating shaft), 34... Output shaft (rotating shaft), 36, 38... Variable pulley, 40... Transmission belt, 42, 44... Fixed rotating body, 46, 48...
...Movable rotating body, 50, 52...Hydraulic cylinder (hydraulic drive device), 80...Outer peripheral wall, 82...Cylindrical part, 84...Flange part, 86...Inner cylinder, 88...Outer cylinder, 90... ... Piston member, 100a, 100b, 100c ... Seal member, 116 ... Inner peripheral surface, 118 ... Butt surface, 122 ... Cylindrical projection, 124 ... Recess,
126... Chamfered portion (tapered guide surface).

Claims

[Claims for Utility Model Registration] A fixed rotating body provided on each of a pair of rotating shafts and fixed to the rotating shaft; a pair of variable pulleys around which a transmission belt is wound, and a cylindrical pulley protruding from the outer periphery of the movable rotary body in parallel with the axis of the rotating shaft toward the side opposite to the transmission belt. It has an outer peripheral wall, a cylindrical part whose one end is fixed to the rotating shaft, and a flange part extending from the other end of the cylindrical part to the outer peripheral side, and the outer peripheral edge of the flange part is connected to the inner peripheral surface of the outer peripheral wall. an inner cylinder slidably fitted therein via an annular sealing member, and an inner peripheral surface fixed to the rotation shaft and facing the outer peripheral surface of the cylindrical portion of the inner cylinder. An outer cylinder is fixed to an end edge of the outer peripheral wall, and is slidably fitted between the outer peripheral surface of the cylindrical portion of the inner cylinder and the inner peripheral surface of the outer cylinder through respective annular seal members. a belt-type continuously variable transmission comprising an annular piston member and a hydraulic drive device that drives the movable rotating body in the axial direction; A cylindrical protrusion extending the inner circumferential surface is provided protruding toward the piston member, and a recess into which the cylindrical protrusion is fitted is provided in the piston member, and the inner cylinder and the A belt-type continuously variable transmission characterized in that a tapered guide surface is formed to guide the annular seal member when fitting with an outer peripheral wall.