DE7321095U - Flexible coupling for shafts - Google Patents

Description

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COHAUSZ & _: ^ LjOJEi

PATHNTAN WALTS OFFICE 4 DÜSSELDORF SGHUMANNSTR.

PATENTANWÄLTE, Dlpl.-Ing. W. COHAUSZ · DIpI l «g. W. FLCRACK ■ Dipl.-Ing. R. KNAUF Or.-Ing., Dipl.-WIrtodt.'InQ. A. QERBEII

. June 1973

Applicant: ATEC Weiss KG, 4OM6 Büttgen, Gutenbergstrasse

Flexible coupling for shafts

The invention relates to an elastic coupling for shafts with two over a disk-shaped, resilient membrane or a package of such membranes connected to one another in spaced and angularly variable coaxial coupling parts, of which one coupling part has an outer rim of rivets or screw bolts and the other coupling part Attached to the memoran or the membrane package via an inner ring of rivets or screw bolts are.

Such a coupling is known »In addition to the possibility of absorbing changes in distance and angular misalignment, drawing» annoy yourself with the compact design, freedom from backlash and maintenance-free. Their use is limited however, due to the transferable torque, there on the inner rim, where because of the smaller radius compared to the outer rim the circumferential forces are bi jonders large, only a lower one Number of rivets or bolts can be accommodated.

K / Tn. - 27 205 - 2 -

732109S-15.7 *

The invention is based on the object of improving the coupling of the type mentioned at the outset, while maintaining the advantages of the known coupling, to the effect that it can transmit higher torques than the known couplings.

This object is achieved according to the invention in that the other coupling part has a stub shaft which protrudes through a central opening in the membrane or the membrane package and on the free end of which a first disk is non-rotatably arranged, which is connected to a second corresponding one on the other side of the Membrane or the membrane package arranged and also rotatably connected to this other part of the disc carries the rivets or the screw bolts of the inner ring.

While rivets or screw bolts were only loaded in one step with the known membrane coupling, the coupling according to the invention loads them in two steps, so that with otherwise the same dimensions and arrangement of the individual parts, the coupling according to the invention is able to transmit twice as high a torque like the well-known clutch.

According to one embodiment of the invention, for the rotationally fixed connection of the first disk "* t £ the shaft end of the shaft stub, at least one" .iale outer groove and the first disc at least one s · ... sponding axial inner groove, said in both grooves a common wedge eir.- CV (ri. ΓΙ.

In order to be able to achieve tiohe speeds, it is necessary to center the individual coupling parts permanently. This can be realized by, after a Ausfalli.tung of the invention that the membrane or the membrane package with

♦ ♦

its outer edge is used in a designed as a snug fit hollow cylindrical flange, which with the first Coupling part is rigidly connected, while its inner edge on the stub shaft designed as a snug fit sits and is supported on the second disc rigidly connected to the stub shaft.

In the following the invention is explained in more detail with reference to a drawing which shows, as an exemplary embodiment, two couplings connected to one another to form a coupling unit. Each coupling consists of a first coupling part 1, designed as a hub, and a second, second coupling part 3, which is integrally connected to a shaft 2. The hubs are set up for connection for the input and output shafts. The hub 1 has a flange M, which end face as a snug fit 5 for a corresponding front side snug fit 6 a? Annular flange 7 is formed. The annular flange 7 has an inner, cylindrical recess 8 designed as a snug fit, in which a package of metal, resilient, annular membranes 9 is seated. The outer dimensions of the membranes 9 correspond to the dimensions of the fitting 8, so that the membranes 9 are centered in the annular flange 7. The outer sides of the membrane 9 is covered by an annular disk 10, which is also inserted centered in the x & öaitz θ. A ring of rivets 13 braces the ring flange 7 and the ring disk 10 and the package of membranes 9 arranged between them with one another. Through the flange <4 of the part i hindishgsstsekt-s, which is designed as a hub, the ring flange 7 rigidly connects the coupling part 1, which is designed as a hub.

The shaft 2 carries a disk 13 and a stub shaft 1Ί arranged upstream of the disk 13. The outer face of the Washer 13 and the stub shaft IM form a passport for the membranes with a central opening 9 *

On the free end of the stub shaft 14 there is an annular disk 15 which is secured against rotation by axially parallel wedges χ6 is secured with a press fit in axially parallel grooves of the stub shaft 14 and the disk 15 engage. The package of membranes 9 is with the other coupling part 3 connected by a ring of screw bolts 17 passing through the washer 13, the annular ring 15 and the membranes 9 are inserted.

The outer edge of the disc 13 is surrounded by the inner edge of the annular disc 10 with little play, so that at a coupling uch the shaft 2 against migration through the Ring washer 10 is secured.

In the coupling according to the invention dis are screw bolts 17 loaded in two directions, namely in the planes of the contact surfaces of the package of the membranes 9 with the disk 13 and the washer 15. Since the connection in the area of the inner ring is decisive for the load-bearing capacity of the coupling, can with a compact design the .erfinlungsgemäße coupling compared to couplings with single-shear loading of the Screw bolts or rivets are practically doubly belaiitot.

The coupling according to the invention also allows βion Use high speeds, since all clutch components are exactly centerable and in operation in this centering being held.

Expectations:

. 5

7321695-1.1 »

Claims (3)

Expectations: 1.Elastic coupling for shafts with two over a disc-shaped, resilient membrane or a package of such membranes spaced and angularly variable interconnected, coaxial coupling parts, one of which Coupling part via an outer rim rivets or screw bolts and the other coupling part via an inner rim rivets or bolts on the membrane or the Membrane package are connected, characterized in that the other coupling part (3) has a stub shaft (16) has, which protrudes through a central opening in the membrane (9) or the membrane package and on its free At the end a first disc (15) is seated in a rotationally fixed manner, which is connected to a second corresponding one on the other side of the membrane (9) or the membrane package arranged and rotatably connected to this other part (3) disc (13) the rivets or Bearing screw bolts (17) of the inner ring. 2. Coupling according to claim 1, characterized in that for the rotationally fixed connection of the first disc (15) on the stub shaft (14) of the stub shaft (14) at least one axial outer groove and the washer (15) have at least one corresponding axial inner groove, with one in the two grooves common wedge (16) engages. 3. Coupling according to claim 1 or 2, characterized in that the membrane (9) or the membrane package with its outer edge in a hollow cylindrical shaped as a snug fit (8) Planseh (7) is used, namely the first coupling part (M) is rigidly connected, while it is with its inner edge sits on the stub shaft (14) designed as a snug fit and is rigidly connected to the stub shaft (14) second disc (13) is supported.