Machine element or mechanism – Elements – Flywheel – motion smoothing-type
Patent
1995-12-14
1998-01-27
Luong, Vinh T.
Machine element or mechanism
Elements
Flywheel, motion smoothing-type
74572, 464 68, 192205, F16F 1510
Patent
active
057111910
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
a) Field of the Invention
The present invention concerns damping flywheels, notably for motor vehicles, of the type having two coaxial masses mounted so as to move with respect to each other, counter to an elastic damping device having at least one elastic damping member acting radially overall between the two masses, and pivotally mounted on each one thereof.
b) Description of Related Art
Such a damping flywheel, also called a double damping flywheel, is described, for example, in the document FR 93 15581, filed on 23 Dec. 1993 and not published to date.
In this document, in one embodiment, the elastic member is pivotally mounted on both masses by means of tie rods mounted in reverse orientations.
Each tie rod has a base and teeth connected to the said base. The teeth of the tie rods are each mounted inside the guide tube and define housings for mounting elastic members.
Friction is thus produced in the guide tubes during the relative movement between the two tie rods.
This arrangement proves satisfactory, but in some cases it can be desirable to increase the rigidity of the components used for mounting the elastic members, and to improve their guiding and increase friction.
SUMMARY OF THE INVENTION
The object of the present invention is to respond, in a simple and economical manner, to these requirements.
According to the invention a damping flywheel of the aforementioned type is characterised in that the said elastic member is mounted in a pivoted cartridge having, on the one hand, a web provided with a first housing for mounting the said elastic member and, on the other hand, two guide components disposed axially on each side of the said web and each having, opposite the first housing, a second housing for mounting the said elastic member, in that the guide components are fixed to each other, in that the web and the guide components are mounted in reverse orientations, the said web having at one of its internal and external peripheries a first protuberance for mounting first pivoting means on a first of the said masses, while the guide components each have at one of their external and internal peripheries a second protuberance, opposite each other for mounting second pivoting means on the second of the said masses, the said second and first protuberances being radially offset with respect to each other, and in that friction means are mounted within the cartridge for action between the web and the guide components.
By virtue of the invention, a pivoted cartridge is created which serves to house and guide the elastic members. This pivoted cartridge is more rigid than the tie rods of the prior art, notably because the guide components frame the web, while being fixed to each other.
Furthermore, the first and second housings afford good guiding of the elastic member or members.
Thus, by virtue of the invention, it is possible easily to integrate a friction device within the said cartridge, by means of the web and the guide components.
By virtue of the device according to the invention, it becomes possible, where the elastic members consist of coil springs, to mount the latter concentrically, which was impossible in the prior art.
Furthermore, the cartridge can have any number of first and second housings parallel to each other.
It proves possible to mount one or more elastic members depending on the application.
These elastic members can even act in a delayed manner, which was hardly possible in the prior art.
To this end, some elastic members can be mounted, for example, without clearance in the second housings in the guide components and with clearance in the first housing in the web.
Thus the housings in the web can be of different sizes.
Of course, the reverse is possible, some springs being mounted without clearance in the first housings and with clearance in the second housings.
All this depends on the applications.
Advantageously, the guide components are fixed laterally to each other by means of lateral edges which they have for this purpose.
Thus it is possible to f
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Feigler Jacques
Mokdad Ayman
Luong Vinh T.
Valeo
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