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Transmission mechanism

A technology of speed change mechanism and speed ratio, which is applied in the direction of mechanical equipment, transmission devices, components with teeth, etc., can solve the problems of chain shedding, vibration or noise increase, etc., and achieve the suppression of the increase of the difference in chain length relaxation effect

Inactive Publication Date: 2017-02-15
JATCO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, vibration or noise will increase, and in addition, the chain will come off

Method used

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Embodiment Construction

[0030] Hereinafter, embodiments of the transmission mechanism of the present invention will be described with reference to the drawings. The speed change mechanism of this embodiment is suitable for a vehicle transmission. In addition, in this embodiment, the axial center side (revolving shaft side) close to a rotating shaft in a transmission mechanism is demonstrated as an inner side, and the opposite side as an outer side.

[0031]In the present embodiment, an example of a speed change mechanism will be described in which the number of teeth of the compound sprocket is kept as an integer when the speed ratio is maintained constant, and in which the number of teeth of the compound sprocket is kept constant when the speed ratio is changed. The number of teeth changes from integers to other integers. Therefore, the speed change mechanism can change speed in multiple stages according to the integer number that can be taken as the number of teeth of the compound sprocket. In ad...

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Abstract

The present invention has an interlock means (60) that can interlock the expansion of the inscribed circle radius of one composite sprocket (5) to the reduction in the inscribed circle radius of another composite sprocket (5). When changing a gear ratio towards a constant speed gear ratio at which the rotational speed of two rotary shafts (1, 1) become the same, the interlock means (60) reduces the amount of radius reduction more than the amount of radius expansion when an actual chain length, which is the actual length of a chain, with respect to the geometric chain length, which is the length of the ideal chain wound without excess or deficiency around two sets of composite sprockets (5, 5) when the amount of diameter expansion and diameter reduction are the same, is greater by a pre-set, predetermined length, and when same is not greater than the predetermined length, causes the amount of radius reduction to be the same as the amount of radius expansion.

Description

technical field [0001] The present invention relates to a transmission mechanism that transmits power through a plurality of pinion sprockets that are movable in the radial direction while maintaining an equidistance with respect to a rotation axis and a chain wound around the pinion sprockets. It is supported and revolves around the axis of the rotating shaft (rotates integrally with the rotating shaft). Background technique [0002] At present, the drive belt is wound around the primary pulley and the secondary pulley, and the power is transmitted using the frictional force generated between each pulley and the drive belt by the thrust applied to the movable pulley of each pulley. The transmission is put into practical use, for example, as a vehicle transmission. In this continuously variable transmission, when a large power is transmitted, it is necessary to increase thrust to ensure frictional force. At this time, the burden on the driving source (engine or electric mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H9/24
CPCF16H9/10F16H55/54F16H9/24
Inventor 丹下宏司
Owner JATCO LTD