Continuously variable transmission

A continuously variable transmission, rotating element technology, applied in the direction of transmission, friction transmission, belt/chain/gear, etc., can solve the problem of reducing torque transmission efficiency, and achieve the effect of inhibiting the reduction of transmission efficiency

Inactive Publication Date: 2014-04-09
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This deviation is related to the deviation between the rotation direction of the rotating member and the rotation direction of the third rotation element (sun gear). Therefore, in the conventional continuously variable transmission of this type, the torque transmission efficiency may be reduced.

Method used

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Embodiment

[0027] based on Figure 1 to Figure 7 Embodiments of the continuously variable transmission according to the present invention will be described.

[0028] Initially, use figure 1 An example of the continuously variable transmission of this embodiment will be described. figure 1 Symbol 1 in represents the continuously variable transmission of this embodiment.

[0029] The continuously variable transmission mechanism constituting the main part of the continuously variable transmission 1 is a so-called traction planetary mechanism. The rotating elements 10, 20, 30, 40 have a common first rotating center axis R1 and can perform relative rotation with each other; a plurality of fifth rotating elements 50, the plurality of fifth rotating elements 50 have a Another second rotational central axis R2 parallel to the central axis R1 at a reference position described later; In this continuously variable transmission 1 , the gear ratio between input and output is changed by tilting th...

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Abstract

A continuously variable transmission includes: first and second rotating elements that has a common first rotation axis; a planetary ball that is rotatably supported by a support shaft having a second rotation axis separate from the first rotation axis, and is sandwiched between the first rotation member and the second rotating member such that torque transmission is possible between them; grooves, etc., that permit change in a rotation ratio between the first and second rotating members by tilting and rolling the planetary ball; an inclined surface that pushes the support shaft in a direction opposite to the direction of tilt of the support shaft in accordance with spin moment occurring at the planetary ball when moving in an axial direction; and a thrust force transmitting section, such as a movable shaft, etc., by which radial thrust force applied from the planetary ball is transmitted to the inclined surface based on spin moment occurring at the planetary ball.

Description

technical field [0001] The present invention relates to a continuously variable transmission capable of continuously changing the rotational speed (rotational speed) between input and output. Background technique [0002] Conventionally, there is known a continuously variable transmission of a so-called traction planetary mechanism. The continuously variable transmission is provided with: a plurality of rotating elements that are relatively rotatable having a first rotation center shaft; A plurality of different second rotation central axes parallel to the central axis are radially arranged around the first rotation central axis, and each rotating member is clamped by the first rotating element and the second rotating element arranged oppositely, and each rotating member is clamped. It is arranged on the outer peripheral surface of the third rotating element. In such a continuously variable transmission, the rotational speed between the input and output is continuously chan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H15/52
CPCF16H15/52
Inventor 椎名贵弘村上新小川裕之友松大辅
Owner TOYOTA JIDOSHA KK
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