JPH0339649U

JPH0339649U -

Info

Publication number: JPH0339649U
Application number: JP10062089U
Authority: JP
Priority date: 1989-08-29
Filing date: 1989-08-29
Publication date: 1991-04-17
Anticipated expiration: 2003-07-02
Also published as: JPH0526366Y2

Description

[Brief explanation of drawings]

図面は本考案の実施例を示し、第１図は変速装
置の正面部、第２図は同断面図、第３図はテンシ
ヨンアームの一部破断平面図、第４図ａ及び第４
図ｂはそれぞれ変速比を切り換えたときの規制ピ
ンの変位を模式的に示す説明図である。１……車体（固定体）、６……駆動軸（回転軸
）、９……従動軸（回転軸）、１２……駆動プー
リ、１４……固定シエイブ、１５……可動シエイ
ブ、１７……ベルト溝、１８……従動プーリ、２
０……固定シエイブ、２１……可動シエイブ、２
３……ベルト溝、２４……第１カム機構（変速機
構）、３６……第２カム機構（変速機構）、５１
……変速切換機構、５２……テンシヨン機構、５
４……テンシヨンアーム、５６……テンシヨンプ
ーリ、５７……ばね（付勢手段）、５８……支持
プレート（規制支持部材）、５９……規制ピン（
ベルト規制部材）、６０……ベルト規制機構、Ｂ
……Ｖベルト、Ｂ_１……張側スパン、Ｂ_２……緩
み側スパン。 The drawings show an embodiment of the present invention; FIG. 1 is a front view of the transmission, FIG. 2 is a sectional view thereof, FIG. 3 is a partially cutaway plan view of the tension arm, and FIGS.
FIG. b is an explanatory diagram schematically showing the displacement of the regulation pin when changing the gear ratio. 1... Vehicle body (fixed body), 6... Drive shaft (rotating shaft), 9... Driven shaft (rotating shaft), 12... Drive pulley, 14... Fixed shake, 15... Movable shake, 17... Belt groove, 18... Driven pulley, 2
0...Fixed sieve, 21...Movable sieve, 2
3... Belt groove, 24... First cam mechanism (speed change mechanism), 36... Second cam mechanism (speed change mechanism), 51
...speed change mechanism, 52...tension mechanism, 5
4... Tension arm, 56... Tension pulley, 57... Spring (biasing means), 58... Support plate (regulation support member), 59... Regulation pin (
belt regulating member), 60...belt regulating mechanism, B
... V-belt, B ₁ ... Tension side span, B ₂ ... Loose side span.

Claims

[Claims for Utility Model Registration] (1) A pair of rotating shafts arranged parallel to each other, a fixed shaft rotatably fixed to each of the rotating shafts and immovable in the axial direction; A driving and driven pulley constituted by a variable pulley consisting of a movable sheave that is rotatably supported so as to be movable in the axial direction and that forms a belt groove with a V-shaped cross section between it and the fixed sheave, and both of the above pulleys. The transmission belt is wound around between the belt grooves of
a pair of transmission mechanisms; a transmission switching mechanism that interlocks the two transmission mechanisms so that the pulley diameters of the two pulleys change in opposite directions to vary the transmission ratio between the two rotating shafts; a tension mechanism having a tension pulley which is arranged and applies tension to the belt by pressing the slack side span of the belt when the power of the driving pulley is transmitted to the driven pulley; and the tension pulley is arranged in a direction opposite to the belt pressing direction. and a belt regulating member that regulates the belt tension side span from moving outward when the belt is displaced by a predetermined amount or more and the belt pressing force becomes zero, and the belt regulating member prevents the tension pulley from moving outward. A pulley-type transmission characterized by being connected to a tension mechanism so as to be able to move in the same direction in conjunction with each other. (2) The tension mechanism is arranged between a tension arm that is swingably supported by a fixed body and has a tension pulley pivotally supported at its tip, and the tension arm and the fixed body. and a biasing means for biasing the tension pulley to press the belt, and a regulation support member whose distal end extends toward the belt tension side span is attached and fixed to the distal end of the tension arm. The pulley type transmission according to claim 1, wherein a belt regulating member is attached to the tip of the support member.