JPH0165450U

JPH0165450U -

Info

Publication number: JPH0165450U
Application number: JP1987156659U
Authority: JP
Priority date: 1987-10-15
Filing date: 1987-10-15
Publication date: 1989-04-26

Description

[Brief explanation of drawings]

第１図は本考案一実施例の構成説明図、第２図
は同制御回路図、第３図は従来のベルト式無段変
速機の可変プーリ部分の縦断面図である。Ａは第１の可変プーリ機構、Ａ′は第１のプー
リ構体、Ｂは第２の可変プーリ機構、Ｂ′は第２
のプーリ構体、Ｄは第１のピストン・シリンダ機
構、Ｅは第２のピストン・シリンダ機構、３，２
４は固定プーリ、５，２６は可動プーリ、１６，
２９はピストン、１３，３２は連通孔。 FIG. 1 is a configuration explanatory diagram of an embodiment of the present invention, FIG. 2 is a control circuit diagram thereof, and FIG. 3 is a longitudinal sectional view of a variable pulley portion of a conventional belt type continuously variable transmission. A is the first variable pulley mechanism, A' is the first pulley structure, B is the second variable pulley mechanism, and B' is the second
pulley structure, D is the first piston cylinder mechanism, E is the second piston cylinder mechanism, 3, 2
4 is a fixed pulley, 5, 26 is a movable pulley, 16,
29 is a piston, and 13 and 32 are communicating holes.

Claims

[Scope of utility model registration request]

A first variable pulley mechanism that reciprocates the movable pulley toward the fixed pulley by operating the piston-cylinder mechanism to obtain an arbitrary pulley wrapping radius; and a first variable pulley mechanism that reciprocates the movable pulley toward the fixed pulley by operating the piston-cylinder mechanism. a second variable pulley mechanism to obtain an arbitrary pulley winding radius, a first pulley structure formed by a fixed pulley and a movable pulley of the first variable pulley mechanism, and a fixed pulley and a movable pulley of the second variable pulley mechanism. In a belt type continuously variable transmission equipped with a second pulley structure formed by a pulley and an endless belt wound around the pulley, the piston of the piston cylinder mechanism of the first variable pulley mechanism is provided with A communication hole is formed to communicate the chambers with each other, and a difference is made in the piston pressure receiving area of these two chambers, so that the chambers before and after the piston are communicated with the piston of the piston cylinder mechanism of the second variable pulley mechanism. A belt-type continuously variable transmission characterized by forming a communication hole and making a difference in the piston pressure receiving area of these two chambers.