192 clutches and power-stop control – Elements – Clutch element resiliently carried on hub
Patent
1996-11-07
1999-02-23
Bonck, Rodney H.
192 clutches and power-stop control
Elements
Clutch element resiliently carried on hub
464 68, 295271, F16F 1516, F16F 15131
Patent
active
058734457
DESCRIPTION:
BRIEF SUMMARY
SUMMARY OF THE INVENTION
1. Field of the Invention
The present invention concerns damping flywheels, notably for motor vehicles, of the type having two coaxial masses, one of which is designed to be connected with respect to rotation to a drive shaft, such as the crankshaft of an internal combustion engine of a motor vehicle, and the other one of which is designed to be connected with respect to rotation to a driven shaft, such as the input shaft to a gearbox, of the type in which the first mass has a chamber able to be filled, at least partially, with a pasty or viscous agent and in which are housed circumferentially-acting elastic means, interposed between the said masses.
2. Description of the Prior Art
The present invention relates more particularly to a method of manufacturing such a flywheel, described for example in the document FR-A-2 603 678. In this document, before the damping flywheel is balanced, the first mass including the chamber is brought to a rotation speed which enables the pasty or viscous agent to be distributed around the periphery of the chamber at a radially internal level which is as constant as possible.
The at least partial filling, of the chamber can take place when the inertial mass is rotating.
In practice, the damping flywheel is pre-fitted before the chamber is filled.
This practice does not afford full satisfaction, since it notably requires an orifice to be provided for filling the chamber.
The object of the present invention is to overcome these drawbacks.
SUMMARY OF THE INVENTION
According to the invention, a method of manufacturing a damping flywheel of the type indicated above, in which the first mass has on its outer periphery an annular indentation for radially retaining directly or indirectly the circumferentially-acting elastic means is characterised in that the pasty or viscous agent is disposed evenly around the outer periphery of the said first mass before the chamber is closed.
There is thus no need to centrifuge the pasty or viscous agent.
In one embodiment, the grease is deposited using a greasing machine in the indentation or in a spout, advantageously divided into annular sectors, mounted in the said indentation, and then the circumferentially-acting elastic means are mounted.
In another embodiment, the springs are mounted in the said indentation or in the said spout, and then the grease is deposited on the springs.
In each case, the chamber is closed again, and then a balancing of the first mass takes place.
The simplicity of the method, which can be carried out with a rotary greasing machine, depositing for example the weight of grease required, will be appreciated. This deposition takes place evenly.
The description which follows illustrates the invention in conjunction with the accompanying drawings in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a view in axial section along the line 1--1 in FIG. 2 of a damping flywheel according to the invention;
FIG. 2 is a view in partial cross section in the direction of the arrow 2 in FIG. 1;
FIG. 3 is a partial view in cross section along the line 3--3 in FIG. 2;
FIG. 4 is a diagrammatic view of the greasing machine.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
In FIGS. 1 to 3, a damping flywheel for motor vehicles has been depicted which consists essentially of a first mass 12 (or first rotating element) and a second mass 14 (or second rotating element), which are movable with respect to each other about an axial symmetry axis X--X of the assembly.
In this case the masses 12 and 14 are coaxial and are mounted so as to be movable with respect to each other counter to circumferentially-acting elastic means 32 and an axially-acting friction device 58.
The first mass 12, which is in the form of a plate in this case, carries a starting ring 16 suitable for cooperating with the starter (not shown) of the vehicle. This plate has on its inner periphery, of a single piece, a central hub 18, and on its outer periphery an axially oriented peripheral annular skirt 22.
The plate 20, of a single piece wi
REFERENCES:
patent: 5146811 (1992-09-01), Jackel
patent: 5172796 (1992-12-01), Campbell et al.
patent: 5242328 (1993-09-01), Friedmann et al.
patent: 5435783 (1995-07-01), Rohrle
patent: 5575182 (1996-11-01), Schierling et al.
patent: 5575183 (1996-11-01), Schierling et al.
Patent Abstracts of Japan, vol. 16, No. 206 (M-1248). 15 May 1992 & JP,A,04 0316474 (Hitachi Ltd) Feb., 1992.
Haberbusch Andre
Tessitore Alessandro
Bonck Rodney H.
Rodriguez Saul J.
Valeo
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