Honda Giken Kogyo Kabushiki Kaisha

Other

Honda Motor Co., Ltd.

Ken Kanokogi

Hideaki Yoshida

Takamichi Shimada

Toru Yagasaki

Shigeru Kanehara

Hirofumi Akagi

Masamichi Harada

Jungho Park

Trenton Scott Meehan

Trenton S Meehan

Jungh0 Park

A belt for a continuously variable transmission comprises endless plate-like ringsand a plurality of plate-like elements, which are placed adjacent to one another and slidably on the rings, so that the ringsare disposed on the saddle portionsof the elements, respectively. In each element, a first recessis provided at the upper innermost part of each saddle portionsuch that the first recessis continuous to a corresponding lower side end of the neck portion. In addition, a second recessis provided at the lower innermost part of each ear portionsuch that the second recessis continuous to a corresponding upper side end of the neck portion. At least one of the first and second recessesandis in an elliptic arc figure, in a compound arc figure that comprises various circular arcs or in a compound arc figure that comprises an elliptic arc and one or more circular arcs.

Belt for continuously variable transmission

In a belt for a continuously variable transmission, a first line on a lower edge of an element body of a metal element is determined, and a second line straightforwardly connecting a lower end of a V-face to which a load is applied from a V-groove in a pulley and an inner end of a saddle surface is determined, so that when a downward load is applied from a metal ring assembly to an outer end of the saddle surface, the folding-resistant strength of the element body is uniform laterally. The position of the recess is determined in the vicinity of a point of intersection of the first and second lines. The lower edge of the element body is defined by the first line inside the recess and by the second line outside the recess. The durability of the metal element can be enhanced by devising the shape of the lower edge of the element body of the metal element in this manner.

Belt for non-stage transmissions

A belt for continuously variable transmission, wherein the relationship between the thickness of the metal ring assembly and the groove width of the ring slot is established so that a limit rolling angle &agr; defined as a rolling angle of the metal elements provided when a radially outer peripheral surface of the metal ring assembly contacts a radially outer edge of the ring slot in the metal element is in a range of 0.7&deg;<&agr;<2.5&deg;. The upper limit value 2.5&deg; of the angle &agr; is set as a rolling angle at which the driving force transmitting efficiency is a predetermined value or more, and the lower limit value 0.7&deg; of the angle &agr; is set as a rolling angle generated following the deformation of a V-face due to an axial thrust on a drive or driven pulley.

A method of computing a belt tension distribution based on a multibody modeling method for the metal pushing V-Belt for CVTs. In order to reduce the complexity of the model, the ring is modeled as a virtual element that exists only as the second order differential equation. The virtual ring concept relies upon the instant locations and orientations of the blocks to compute total length, local bending, block-to-ring friction distribution, and friction-induced tension distribution of the ring. Simulation results show a good agreement with experimental results both in ring tension distribution and block compression distribution along the belt.

Method of computing belt tension distribution of metal-pushing V-belt for CVT

A belt for a continuously variable transmission includes a metal element,having a rocking edge,between a main surface,and a slope,on the front side of the metal element in the advancing direction and a ring slot,into which a metal ring assembly,is fitted, between an element body,and an ear portion,The position of the center of gravity G of the metal element,is regulated to the outside of the rocking edge,and to the inside of a radially outer end,of the ring slot,Therefore, a relation Vr<Vg<Vs is established when a speed of the rocking edge,at an instant when the metal element,leaves a driven pulley is represented by Vr, a speed of the center of gravity G of the metal element,is by Vg, and a speed of the ring slot,at the radially outer end,is by Vs, whereby the proper range of the center of gravity G of the metal element,of the belt for the continuously variable transmission can be specified correctly so that the metal element,located at a chord portion between the driven pulley,and a drive pulley,of a metal belt,is prevented from being tilted and thus can be meshed smoothly with the drive pulley

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Wako, Japan

Ken Kanokogi