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1. WO2000043694 - MECHANICAL TRANSMISSION WITH CONTINUOUSLY VARYING TRANSMISSION RATIO

Publication Number WO/2000/043694
Publication Date 27.07.2000
International Application No. PCT/FR2000/000121
International Filing Date 20.01.2000
Chapter 2 Demand Filed 14.08.2000
IPC
F16H 33/08 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
33Gearings based on repeated accumulation and delivery of energy
02Rotary transmissions with mechanical accumulators, e.g. weights, springs, intermittently-connected flywheels
04Gearings for conveying rotary motion with variable velocity ratio, in which self-regulation is sought
08based essentially on inertia
CPC
F16H 33/08
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
33Gearings based on repeated accumulation and delivery of energy
02Rotary transmissions with mechanical accumulators, e.g. weights, springs, intermittently-connected flywheels
04Gearings for conveying rotary motion with variable velocity ratio, in which self-regulation is sought
08based essentially on inertia
Applicants
  • GUICHARD, Louis [FR/FR]; FR
Inventors
  • GUICHARD, Louis; FR
Agents
  • GUIU, Claude; Cabinet Claude Guiu 10, rue Paul Thénard F-21000 Dijon, FR
Priority Data
99/0056920.01.1999FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) MECHANICAL TRANSMISSION WITH CONTINUOUSLY VARYING TRANSMISSION RATIO
(FR) TRANSMISSION MECANIQUE A VARIATION CONTINUE DU RAPPORT DE TRANSMISSION
Abstract
(EN)
The invention concerns a mechanical transmission automatic selector varying from an infinite ratio to 1/1, comprising an input plate integral with the input shaft and bearing regularly distributed over a ring centred on the input shaft, first pivots (2) whereon are articulated weights (1), such that any difference in rotational speed between the output and input shafts causes a displacement of the weights (1), increasing the torque transmitted to the output shaft, connecting rods (14) fixed on second pivots (13) integral with the weights (1), and on third pivots (10) articulated about a crankpin (7) of the crankshaft forming the output shaft. The invention is characterised in that each weight (1) elongated in shape, having an outer convex surface (1a) and an inner concave surface (1b), is connected at the front to the first pivot (2) on the input shaft by a double articulation device (2, 11; 12, 15) providing a limited circumferential displacement of the counter-weight (1) relatively to the first pivot (2).
(FR)
Variateur automatique de transmission mécanique depuis un rapport infini jusqu'à 1/1, comportant un plateau menant solidaire de l'arbre menant et portant, uniformément répartis sur un cercle centré sur l'arbre menant, des premiers pivots (2) sur lesquels sont articulées des masselottes (1), de telle façon que toute différence de vitesse de rotation entre les arbres mené et menant provoque un débattement des masselottes (1), entraînant une augmentation du couple transmis à l'arbre mené, des bielles (14), fixées, d'une part, sur des seconds pivots (13) solidaires des masselotess (1), et d'autre part, sur des troisièmes pivots (10) articulées autour du maneton (7) d'un vilebrequin constituant l'arbre mené, remarquable en ce que chaque masselotte (1) de forme allongée, présentant une surface extérieure convexe (1a) et inférieure concave (1b), est reliée à l'avant au premier pivot (2) sur le plateau menant par un dispositif à double articulation (2, 11; 12, 15) procurant un débattement circonférentiel limité de la masselotte (1) par rapport au premier pivot (2).
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