Component for metal belt of continuously variable transmission

A continuously variable transmission and component technology, applied in the direction of V-belt, belt/chain/gear, mechanical equipment, etc., can solve problems such as high stress, reduce torque loss, improve repetitive fatigue strength, and improve power transmission efficiency.

Active Publication Date: 2016-08-24
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] However, according to Figure 10 (c) and Figure 11 It can be seen from (c) that when 0.3≤D / R≤0.75, a very high stress will be generated at the root of the neck
Therefore, the above-mentioned Patent Document 3 does not necessarily have a great effect on reducing the stress at the base of the neck.

Method used

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  • Component for metal belt of continuously variable transmission
  • Component for metal belt of continuously variable transmission
  • Component for metal belt of continuously variable transmission

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Embodiment Construction

[0041] Hereinafter, the present invention will be described in further detail through the embodiments shown in the drawings.

[0042] figure 1 It is an explanatory cross-sectional view of main parts showing the base of the neck of a metal belt element (hereinafter referred to as "element") 100 of the continuously variable transmission of the present invention. in addition, figure 1 (b) is a graph showing the correlation between each curvature radius R and depth D. In addition, the symbol D is the depth (distance) from the end of the saddle surface to the deepest part (point) PC, and the symbol W is the distance from the neck side to the R start point PE of the saddle surface.

[0043] In this element 100, the connecting surface at the base of the neck that smoothly connects the saddle surface and the neck side is gradually increased from the neck side to the saddle surface, and the curvature radius R2 of the bottom surface depends on the curvature radius from the saddle su...

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Abstract

The invention provides a component for a metal belt of a continuously variable transmission, and can appropriately reduce the stress generated at a neck root portion of the component to enhance the repeated fatigue strength when the metal belt is driven, thereby enhancing the torque transmission capacity of the continuously variable transmission and the power transmission efficiency of the continuously variable transmission in the vicinity of an overrunning ratio region. A steel material having a carbon content of 0.61% or more and 0.71% or less is used as a steel material for the component to produce the component. At this time, the shape of the neck root portion connecting a saddle shape surface and a neck side surface is formed by three curved surfaces connected in a smooth manner to each other and satisfying the relationship of R1 < R2 < R3 and D/R2 </= 0.3, and the three curved surfaces are a downwardly convex curved surface (PA-PB (R1)), a downwardly convex curved (PB-PD (R2)) and an upwardly convex curved surface (PD-PE (R3)). In addition, each of the connecting portions is smoothly connected to share the curved surfaces adjacent to the same tangent plane (tangent line).

Description

technical field [0001] The present invention relates to an element for a metal belt of a continuously variable transmission, and more specifically relates to an element for a metal belt of a continuously variable transmission that can properly reduce the stress generated at the root of the neck of the element when the metal belt is driven and improve the repeated fatigue strength , so that the torque transmission capacity of the continuously variable transmission can be improved, and the power transmission efficiency of the continuously variable transmission near the overdrive ratio region can be improved. Background technique [0002] As elements for metal belts of continuously variable transmissions, such as Figure 8 As shown, it has: an element body of an approximately trapezoidal element; a neck with a pair of left and right annular seams in the middle for fitting a metal ring assembly; and an approximately triangular-shaped ear formed on the upper part of the body throu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16G5/16F16H9/24
CPCF16G5/16F16H9/24
Inventor 原田雅道高田健太郎
Owner HONDA MOTOR CO LTD
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