DE1675143A1 - Friction clutch, especially for motor vehicles - Google Patents

Description

PATENT LAWYERS DIPL-ING. BUSCHHOFF DIPL-ING. HENNtCKE 1675143

3 COLOGNE ■ 9.1.1968

KAlSCl-WiIHOM- WNO 34

HOERBIGER VENTILV / ERKE AKTIMGESEU.SClIAFT, V / ien

Friction clutch, in particular for motor vehicles

The invention relates to a friction clutch, in particular for motor vehicles, with a clutch disc, in the case of the one between the hub and the one having the friction lining Drive plate springs are arranged over which the torque is transmitted, with the vibration damping of the relative movements between the hub and the drive plate at least one spring nut with radial, upturned spring arms is provided, which, preferably with the interposition of Bring, a ReibungaechluÜ between the hub on the one hand and the driver plate and / or a holding plate connected to it in a rotationally fixed manner, at the same time.

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A friction clutch is already known as a vibration damper of the type mentioned, in which egg or pederotern is formed from separate finger springs which are riveted together with the hub. In a further known embodiment, the coherently formed Federetem is riveted with its radial spring arrows to the retaining disk, u.zw. by means of the Dintanzbolzen, which connect the drive plate and the Hulteacheibc non-rotatably. The known designs have the disadvantage that the radial spring arms must be pierced for the purpose of the spring star and are thereby weakened. In addition, the riveting of the spring trays also keeps them immovable in the radial direction, so that their springiness is impaired and there is a risk of breakage.

The invention is now based on the object of simplifying and improving the friction clutches with vibration dampers of the type mentioned. According to the invention, this object is achieved in that the spring star engages with at least a part of its radial spring arms in slots of one of the disks and is thereby connected to it in a rotationally fixed manner. In a further embodiment of the invention, the radial spring arms have an edge bent at right angles at their spring ends, with which they snap into the shiit, preferably under resilient pretension. The spring can embrace, if necessary, with your bent hand, no radial play in the> SciilLtüC: intervene,

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being spring-biased against the inside flank of the slots uinci.

The spring star provided in the friction clutch according to the invention is inexpensive to manufacture and can be easily assembled. Ea there are no bores that weaken the radial spring arrae and riveting with other components is unnecessary. The spring element according to the invention is simply pushed with the ends of the radial spring o-ring into the slots of the associated housing, either in a retaining disk or in the drive disk itself, with a further opening -ijuiif; is not required. From a functional point of view, this has the particular advantage over the known designs with riveted spring arms that the spring arms can also move freely in the radial direction during deflection, in particular when they are in the associated f. chlitse with radial play, engage oo dad no; occur> annuugen among others itzlichen Si and breaks are v.eitgehend avoided the spring Ternes the invention ™ is thus characterized the known AusfUlirungen against nods simpler and more lightweight Montierbarkcit but also by a better one. Function off.

In the drawing, an exemplary embodiment of the invention is shown .. Fig. 1 shows a longitudinal section the clutch disc along the line I-I in Fig. 2 and Fig. also a side view.

The clutch disc shown consists of one

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Hub 1 with a splash 2 on which the drive plate 3 with the friction lining 4 and each a retaining washer 5, 6 on the both sides of the flange 2 are arranged. The drive plate 3 and the two retaining plates 5, 6 are through Bistanzbolzen 7 connected to each other with rotating feature. Im splash 2 the Kabe 1 are recesses β for the Diatanzbolzen 7 and a number of approximately rectangular recesses 9 are provided, in which serving for vibration damping coil springs 10 are arranged, over which the torque of the Hub 1 is transferred to the drive plate 3. To this Purpose are both in the drive plate 3 and in the two retaining disks 5, 6 with the recesses 9 of the flange 2 aligned recesses are provided in which the springs 10 engage. A falling out of the springs 10 is caused by the retaining disks 5, 6 prevented retaining tabs 11 bent out.

In order to achieve vibration damping during the relative movement between the hub 1 and the driver disk 3, friction rings 12, 13 are inserted between the flange 2 and the disks 3b on one side and the retaining disk 6 on the other side. The required friction factor is achieved with the aid of a spring star 14, which is inserted between the retaining disk f> and the friction ring 13 resting on the flange 2. The spring stem 14 has radial "bent up spring arms 15" which are elastically deformed when the clutch disc is assembled and thereby provide the necessary frictional force.

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2, the Fedorstern 14 has four radial spring arms 15 which, with their edge 16, which is approximately unbent at right angles, engage in slots 17 in the washer 6. As a result, the spring star 14 was held firmly and secured against rotation, so that no relative movement can occur between the spring star and the retaining plate. The slots 17 are considerably wider in the radial direction than M the thickness of the edges 16 of the spring arm 15 engaging in them.Through this radial play, the upturned spring arms 15 can move freely in the radial direction during deflection, so that an unhindered suspension without unfavorable material stress is possible is. The arrangement is expediently made in such a way that, when the spring star is unloaded, the spring arms 15 rest with their edge 16 with moderate bias against the inner flank 18 of the slots 17 before the clutch disc is assembled. This ensures a firm connection between the spring star and the Ilaltescheibe even during the con days.

Godparents tanaprilche;

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Claims (3)

-6- 1675H3 Claims: 1. A friction clutch, especially for motor vehicles, with a clutch disc, Fedurn are in comprising between the hub and the friction lining Mitnehmerscnoibe arranged, via which the torque is transmitted, wherein, for vibration damping of the relative movements \; i rule the hub and the drive plate wenigstem a spring star with radial, upturned Ftderarn-en is provided, which, preferably with the interposition of ^ friction rings, a friction lock between the hub on the one hand and the internal disc and / or a holding disc connected to it, possibly non-rotatably connected, on the other hand, characterized in that the spring; tern (14) engages with at least part of its radial spring arm (15) in slots (17) of one of the disks (6) and is thereby connected to it in a rotationally fixed manner. 2. Friction clutch according to claim 1, characterized in that the radial spring arms (15) have an approximately at their ends have at right angles bent edge (16) with the || they, preferably under resilient bias, in the Engage the slots (17) in the washer (6). 3. Friction clutch according to claim 1 or 2, characterized in that that the spring arms (15), optionally with their bent edge (16), with radial play in the slots (17) engage, being resiliently biased against the inner flank (1β) of the slots. Vienna, at HOERBIGER VEHTIL.VERKE AKTIEIiGESELLSCIUFT in Vienna η no Q / Q / η R q ^ ^{r go} through: 009849 / UbU / Patentanwälte DIPL-ING. BUSCHKOFF DIFL-ING. HENNICKE 5 COLOGNE BATH ORIGINAL