Machine element or mechanism – Elements – Flywheel – motion smoothing-type
Patent
1996-02-28
1998-06-30
Lorence, Richard M.
Machine element or mechanism
Elements
Flywheel, motion smoothing-type
192 5561, 192 7017, 1922141, 464 7, 464 67, 464 68, F16F 15139, F16F 15167
Patent
active
057717559
DESCRIPTION:
BRIEF SUMMARY
This is an National Application of PCT International Application No. PCT/FR95/00877 filed on Jun. 30, 1995.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a damped flywheel arranged to be interposed operatively between two rotating assemblies, one of which is coupled to the internal combustion engine of a propulsion unit, especially for a motor vehicle, the other one being coupled to the input shaft of the gearbox of the said propulsion unit.
2. Description of Related Art
In particular, the invention relates to a damped flywheel of the same type as that described and shown in the document FR-A-2 687 442, which comprises a first rotating element and a second rotating element, which are coaxial with each other and have the general form of parallel plates that define between them a sealed annular housing, which is delimited mainly by the first rotating element and which is disposed radially towards the outside and receives a resilient damping device and a lubricating agent, such as grease, for the said device together with an annular space which is located radially towards the inside and which receives at least one friction damping device.
The resilient damping device works circumferentially between the two rotating elements, while the friction damping device works axially between the two rotating elements and is arranged in the region of the bearing, such as a ball bearing or a plain bearing, which is interposed radially between the two rotating elements which usually consist of masses, so as to mount them for rotation of one with respect to the other.
It is desirable to lubricate the different components of the resilient damping device, and in particular the springs with their support zones, and it has previously been proposed, for this purpose, to arrange the annular housing, which receives the resilient damping device, in such a way that it is sealed, and to separate it from the annular space that receives the friction damping device, so that it can contain a lubricating agent which is unable to penetrate radially inwardly between the two rotating elements, and so that it will not affect proper operation of the complementary friction damping device which is arranged in the annular space between the two rotating elements.
In order to ensure that the housing is sealed radially inwardly, it has previously been proposed, in the document DE-U-79.26142, to provide sealing means which comprise two coaxial sealing rings, one of which is in engagement through one of its faces against a first support surface associated with the first rotating element, and through its other face against a second support surface associated with the second rotating element.
In the embodiment proposed in that document, each of the support surfaces is defined by an annular O-ring seal which is arranged in an annular groove machined for this purpose in a surface portion, in facing relationship, of either one of the two rotating elements, and eachring is retained radially by simple frictional contact of its opposed faces with the two corresponding O-rings.
The arrangement of the sealing means proposed in that document is particularly complex and costly, because it calls for numerous components and makes it necessary to arrange for machining of grooves of precise dimensions for the O-ring seals, and because the assembly of the different components in such a way as to ensure correct positioning of the rings between their corresponding O-ring seals is particularly difficult, both to carry out and to arrange to be done automatically.
In order to overcome these drawbacks, it has previously been proposed, in the document FR 93 15571 filed on 23 Dec., 1993 and not published at the present time, that each ring should be mounted in axial compression between its two support surfaces and be arranged to engage radially, through one of its circular edges, against a shoulder formed in facing relationship with it on one of the two rotating elements.
Such an arrangement is satisfactory, especially in that it ena
REFERENCES:
patent: 5273372 (1993-12-01), Freidmann et al.
Duclos Didier
Feigler Jacques
Lorence Richard M.
Valeo
LandOfFree
Damped flywheel adapted to be interposed in a motor vehicle prop does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Damped flywheel adapted to be interposed in a motor vehicle prop, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Damped flywheel adapted to be interposed in a motor vehicle prop will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1848734