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Drive belt

A technology for transmission belts and belts, which is applied in the direction of belts/chains/gears, V-belts, mechanical equipment, etc., which can solve the problems of reducing power transmission efficiency and achieve the effect of suppressing transmission efficiency

Active Publication Date: 2013-02-06
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even with the above improved drive belt design, under certain conditions during transmission operation, undesirably increased vibration levels and even slightly reduced power transmission efficiency of the transmission were observed

Method used

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Examples

Experimental program
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Embodiment Construction

[0022] figure 1 Shown are the main parts of a known continuously variable transmission commonly used in the drive line of a motor vehicle between the engine and its driven wheels. The transmission comprises two pulleys 1, 2, each provided with two pulley discs 4, 5, between which there is a drive belt 3 of the so-called push-belt type for transferring the rotational movement M and the accompanying torque are transferred from one of the pulleys 1,2 to the other 2,1. The pulley discs 4, 5 are shaped substantially conical and one pulley disc 4 is incorporated into the transmission axially movably along a respective pulley shaft 6, 7, both discs 4, 5 being placed in said On the pulley shaft 6,7. The transmission typically also includes an activation mechanism that applies an axially oriented clamping force to said one movable disc 4 directed towards the corresponding other axially fixed pulley disc 5 so that the drive belt 3 is clamped. Immediately between the discs 4 and 5. T...

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PUM

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Abstract

Drive belt (3) for power transmission between two adjustable pulleys (1, 2) of a continuously variable transmission comprising a number of relatively thin metal transverse elements (32) slideably provided on two endless carriers (31; 31a, 31b) that each comprise a laminated set of mutually nested flat and thin metal rings (30), which transverse elements (32) comprise a top part (33) and a bottom part (35) mutually connected by a pillar part (34) of the transverse element (32), with a laterally open slot (36) being defined on either axial side of the pillar part (34) for respectively receiving one of the endless carriers (31; 31a, 31b), and which transverse elements (32) are provided with longitudinally protruding stud (38) and with a complementary hole (39). The drive belt is provided with urging means for providing at least one of the endless carriers (31; 31a, 31b) with at least a tendency to move in axial direction towards the pillar part (34) of the transverse element (32) during rotation of the belt (3) in the transmission.

Description

technical field [0001] The invention relates to a transmission belt. Such drive belts are known, for example, from European patent publication EP-A-0976949, said known belt consisting of a large number of relatively thin metal transverse elements slidably arranged on two endless carriers of the belt, so The ring carriers each comprise a stacked set of nested flat and thin metal rings, alternatively indicated as strips. Drive belts of the type described are mainly used as a mechanism for power transmission between two adjustable pulleys of known continuously variable transmissions (continuously variable transmissions), which are mainly used in motor vehicles. Background technique [0002] In said known drive belts, said transverse elements each comprise three main parts, namely a generally arrow-shaped top part, a generally trapezoidal bottom part and a A generally elongated post portion interconnecting the top and bottom portions. On both sides of the column portion, a tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16G5/16
CPCF16G5/16
Inventor C·J·M·范德梅尔P·A·J·M·费斯J·J·C·约恩克斯
Owner ROBERT BOSCH GMBH