JPH0238554U

JPH0238554U -

Info

Publication number: JPH0238554U
Application number: JP11728888U
Authority: JP
Priority date: 1988-09-06
Filing date: 1988-09-06
Publication date: 1990-03-14
Also published as: JPH037635Y2

Description

[Brief explanation of drawings]

図面は本考案の実施例を示し、第１図は無段変
速機の駆動プーリ及び変速切換機構を示す断面図
、第２図は第１図の―線拡大断面図、第３図
は第２図の―線断面図、第４図はニユートラ
ル状態での可動シエイブに作用する力を示す図、
第５図は要部の拡大斜視図、第６図はテーパ角の
最適範囲を設定するための図である。４…駆動軸（回転軸）、４ｃ…平坦面、５…駆
動プーリ（可変プーリ）、６…固定シエイブ、７
…可動シエイブ、７ａ…ボス部、８…ベルト溝、
９…係合溝、１０…ピン、１２…ローラ、１３…
カム、１３ａ…カム面、１８…ローラ取付台、１
８ａ…テーパ穴、１９…テーパピン、１９ａ…平
行部、１９ｂ…テーパ部、２０…カム用ローラ、
２２…Ｖベルト、２４…傾斜面、２８…変速切換
機構、α…テーパピンのテーパ角。 The drawings show an embodiment of the present invention; FIG. 1 is a sectional view showing the drive pulley and gear change mechanism of a continuously variable transmission; FIG. 2 is an enlarged sectional view taken along the line - - of FIG. 1; Figure 4 is a diagram showing the force acting on the movable shaft in the neutral state.
FIG. 5 is an enlarged perspective view of the main part, and FIG. 6 is a diagram for setting the optimum range of the taper angle. 4... Drive shaft (rotating shaft), 4c... Flat surface, 5... Drive pulley (variable pulley), 6... Fixed shaft, 7
...Movable shield, 7a...Boss part, 8...Belt groove,
9...Engagement groove, 10...Pin, 12...Roller, 13...
Cam, 13a...Cam surface, 18...Roller mounting base, 1
8a...Tapered hole, 19...Tapered pin, 19a...Parallel part, 19b...Tapered part, 20...Cam roller,
22... V-belt, 24... Inclined surface, 28... Speed change switching mechanism, α... Taper angle of taper pin.

Claims

[Claims for Utility Model Registration] (1) A fixed shaft provided on at least one of a pair of rotating shafts arranged parallel to each other, and fixed to the one rotating shaft integrally and non-slidably. and a movable sheave that is rotatably and slidably supported on the rotating shaft and that forms a belt groove with a V-shaped cross section between it and the fixed sheave, and the movable sheave is fixed. This pulley-type continuously variable transmission is equipped with a speed change mechanism that changes the diameter of the pulley by moving it toward and away from the shaft, and by changing the pulley diameter of the variable pulley, the speed ratio between both rotating shafts can be changed from a low speed state to a high speed state. In the machine, the speed change switching mechanism includes a cam that is integrally connected to the movable shaft so as to be rotatable relative to the movable shaft and movable in the axial direction, and has an inclined cam surface on the opposite side from the fixed shaft, and a roller mounting fixed to the fixed body. A roller is rotatably supported on the outer periphery of the base via a taper pin and rolls on the cam surface of the cam, and as the cam rotates relative to the roller mounting base, the roller rolls on the cam surface. The cam is configured to roll and move in the axial direction, and the taper pin has a parallel portion that supports the roller, and a tapered portion that is connected to the tip of the parallel portion, and the tapered pin has a parallel portion that supports the roller and a tapered portion that is connected to the tip of the parallel portion. Shifting of a pulley-type continuously variable transmission characterized in that a taper hole having the same taper angle as the taper part of the taper pin is formed in the outer peripheral part, and the taper part of the taper pin is fitted and fixed to the taper hole. Device. (2) The gear change switching device for a pulley type continuously variable transmission according to claim (1), wherein the taper angle of the taper portion of the taper pin is 11° or less.