V-belt type variable speed drive

A belt-type continuously variable speed and pulley technology, which is applied in portable hoisting devices, hoisting devices, transmission devices, etc., can solve the problems of falling maximum speed, large winding diameter, offset, etc.

Inactive Publication Date: 2008-12-17
YAMAHA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the case of adopting a structure that restricts the speed reduction ratio at the top end on the drive pulley side like the above-mentioned conventional device, the winding diameter of the drive pulley becomes smaller in accordance with the degree of wear of the V-belt. The winding diameter on the pulley side increases accordingly, so there is a problem that the reduction ratio shifts from the top reduction ratio to the low reduction ratio side, and the maximum speed decreases.

Method used

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Embodiment Construction

[0029] Embodiments of the present invention will be described below with reference to the drawings.

[0030] Figure 1 to Figure 6 It is a figure for demonstrating the V-belt type continuously variable transmission device which concerns on one Embodiment of this invention. FIG. 1 is a left side view of a motorcycle equipped with a V-belt type continuously variable transmission according to the present embodiment, figure 2 It is a sectional plan view of an engine unit equipped with a V-belt type continuously variable transmission, image 3 It is a cross-sectional plan view of a V-belt continuously variable transmission, Figure 4 , Figure 5 , Figure 6are cross-sectional views showing changes in the winding diameter due to wear of the V-belt. In addition, front and rear and left and right referred to in this embodiment mean front and rear, left and right seen in the state of sitting on the seat.

[0031] In FIG. 1, 1 denotes a two-wheeled motor vehicle, which generally h...

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PUM

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Abstract

In a V-belt type continuously variable transmission in which a driving pulley 55 mounted on the crankshaft (input shaft) 28 and a driven pulley 56 mounted on the transmission shaft (output shaft) 47 are connected by a V-belt 57 , When the driven side movable sheave half body 56b of the driven pulley 56 moves to the top position where the winding diameter becomes the smallest, the hub portion 63 of the driven side movable sheave half body 56b and the The spring support member 65 contacts to limit it to the above-mentioned top position.

Description

technical field [0001] The present invention relates to a V-belt type continuously variable transmission in which a driving pulley mounted on an input shaft for transmitting rotational force and a driven pulley mounted on an output shaft are connected by a V-belt. Background technique [0002] For example, in a small two-wheeled motor vehicle (scooter), a V-belt type continuously variable transmission may be used as a power transmission mechanism for transmitting engine power to the rear wheels. In such a V-belt type continuously variable transmission, as shown in Fig. 13(a) and (b), it is usually a structure in which the driving pulley 103 and the driven pulley 107 are connected by a V-belt 108, wherein the driving belt The pulley 103 is mounted on the crankshaft (input shaft) 100 and has a driving side fixed pulley half 101 and a driving side movable pulley half 102; a driven pulley 107 is mounted on an output shaft 104 and has a driven side The fixed sheave half 105 and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H9/18F16H55/56F16H61/662F16H63/06
CPCF16H9/18F16H55/56F16H63/067F16H2061/66295
Inventor 石田洋介
Owner YAMAHA MOTOR CO LTD
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