Torsionally flexible coupling

Details Torsionally flexible coupling Torsionally flexible coupling

2002-09-30

2004-03-09

Thompson, Kenn (Department: 3679)

Rotary shafts, gudgeons, housings, and flexible couplings for ro

Torque transmitted via flexible element

Nonmetallic element

C464S007000, C464S903000, C474S094000, C074S574300

Reexamination Certificate

active

06702681

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates generally to a torsionally flexible coupling. More particularly, the invention relates to a torsionally flexible coupling, including a first ring and a second ring which enclose each other at a radial distance, at least one ring-shaped first spring element made of elastomeric material being positioned in the annular clearance formed by the radial distance; and a belt pulley being fastened, relatively having torsional flexibility to at least one of the rings with the aid of a second spring element made of an elastomeric material, and being supported on at least one of the rings at least in the radial direction with the aid of a sliding bearing.
2. Description of Related Art
Such a coupling is known from DE 196 43 687. A bearing ring designed as a bearing is made of a self-lubricating material and touches the belt pulley by being directly adjacent. The sleeve bearing makes possible a good relative motion between the belt pulley and the bearing ring and an exact coordination during a long service life.
SUMMARY OF THE INVENTION
It is an object of the invention to develop a torsionally flexible coupling of the type described above in such a way that the damping properties of the sleeve bearing and the service life improve, at cost-effective production.
These and other objects of the invention are achieved by a torsionally flexible coupling having a rotational axis (
1
), a first ring (
2
) and a second ring (
3
,
4
), which enclose each other at a radial distance, at least one ring-shaped first spring element (
5
) made of elastomeric material being positioned in the annular clearance (
13
) formed by the radial distance; and a belt pulley (
7
) being fastened, relatively having torsional flexibility, to at least one of the rings (
2
;
3
,
4
) with the aid of a second spring element (
6
) made of an elastomeric material, and being supported on at least one of the rings (
2
;
3
,
4
) at least in the radial direction with the aid of a sliding bearing (
8
,
9
), wherein the sliding bearing (
8
,
9
) is formed by a rubber layer (
9
) having at least two embedded sliding rings (
8
).


REFERENCES:
patent: 4781659 (1988-11-01), Gebhardt
patent: 5139120 (1992-08-01), Gomi
patent: 5140868 (1992-08-01), Mizuno et al.
patent: 5449322 (1995-09-01), Wagner
patent: 5516331 (1996-05-01), Morr et al.
patent: 5637041 (1997-06-01), Hamaekers et al.
patent: 5988015 (1999-11-01), Riu
patent: 6106421 (2000-08-01), Graber et al.
patent: 196 43 687 (1998-04-01), None
patent: 10045453 (2002-04-01), None

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