Toroidal CVT

A continuously variable transmission, annular technology, applied in couplings, rigid shaft couplings, transmissions, etc., can solve the problems of lubricating oil pollution and poor lubrication state, and achieve the effect of improving the support rigidity

Active Publication Date: 2018-09-25
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fretting wear may become the starting point of damage such as peeling, or the generated wear powder may contaminate the lubricating oil (traction oil), resulting in poor lubrication of each part

Method used

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  • Toroidal CVT
  • Toroidal CVT
  • Toroidal CVT

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] figure 1 An example of an embodiment of the toroidal continuously variable transmission of the present invention is shown. In this case the toroidal continuously variable transmission with Figure 3 ~ Figure 6 The second example of the conventional toroidal continuously variable transmission shown similarly includes an input rotating shaft 1b as a rotating shaft, a pair of input side discs 2a, 2c as a pair of outer discs, an output side disc 5a as an inner disc, multiple A trunnion 7 as a supporting member, a plurality of power rollers 6, a pressing device 9a, and a locking ring 15 as a locking member.

[0042] The pair of input disks 2a and 2c is composed of one input disk 2a disposed around one end of the input shaft 1b and the other input disk 2c disposed around the other end of the input shaft 1b. The one input side disk 2 a and the other input side disk 2 c each have an axially one side surface facing axially inward of the input rotary shaft 1 b as a circular cu...

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PUM

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Abstract

Fletching wear caused by elastic deformation in the axial direction of an input-side disk 2c due to thrust force of a pressure device is prevented. A female-spline section 13a formed around the middle section in the axial direction of the inner-circumferential surface of a center hole 19 in the input-side disk 2c and a male-spline section 12a formed around the outer-circumferential surface of one end section in the axial direction of an input rotating shaft 1b engage with a spline engagement. A disk-side fitting surface section 22 formed around a portion of the inner-circumferential surface of the center hole 19 in the input-side disk 2c that is adjacent to the other end side of the female-spline section 13a and a shaft-side fitting surface section 23 formed around a portion of the outer-circumferential surface of the input rotating shaft 1b that is adjacent to the other end side of the male spline section 12a are fitted together with an interference fit.

Description

technical field [0001] The present invention relates to a toroidal continuously variable transmission used as a transmission for automobiles or a transmission for adjusting the operating speed of various industrial machines such as pumps. Background technique [0002] Japanese Patent Application No. 2003-214516, Japanese Patent Application No. 2007-315595, Japanese Patent Application No. 2008-25821, Japanese Patent Application No. 2008-275088, etc. The semi-toroidal continuously variable transmission is used as a speed changer for automobiles. device. In addition, Japanese Patent Application Laid-Open No. 2004-169719 and the like describe a structure in which the adjustment range of the gear ratio is enlarged by using a combination of a toroidal continuously variable transmission and a planetary gear mechanism. [0003] figure 2 A first example of a conventional structure of a toroidal continuously variable transmission is shown. In the first example of the conventional s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H15/38F16D1/06F16D1/09
Inventor 福田晃大丰田俊郎西井大树斋藤俊博
Owner NSK LTD
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