DE3405948A1 - Torsional vibration damper having bowl-like connecting parts between the covering sheets - Google Patents

Abstract

The invention relates to the connection of covering sheets for torsional vibration dampers. For a simple and stiff construction of the part of a torsional vibration damper formed by the two covering sheets, it is proposed to provide both parts with regions which are deep-drawn in a bowl-like manner and extend into the intermediate space between both covering sheets, come to rest close to one another there and are connected to one another by means of a riveting process. In this case, on the one hand, a separate tubular rivet can be inserted into corresponding holes, but a part can also be designed with its bowl-like region as a tubular rivet itself. This results in simple assembly and a particularly stiff component.

Description

FICHTEL C SACHS AG, Schweinfurt applicant no. : 1 001 «* 85 - Reg.-No .: 12 188 Patent and utility model application

Torsion vibration damper with cup-like connecting pieces between the cover plates

The invention relates to a torsion vibration damper, In particular for motor vehicle clutch disks, consisting u. a. from a hub with hub disk, rarely the hub disk for both arranged cover plates, which are interconnected via connecting elements Are rotatably connected and kept at a distance and one of which is designed as a lining carrier.

Such a Tors Ionsschwingungsdampfer is, for example, off the German Offenlegungsschrift 30 22 596 known. According to this Offenlegungsschrift is proposed for a non-rotatable connection of the two cover plates with one another, individual flat connecting elements made of sheet metal to be used, although for simplicity During assembly, several of these connecting elements are always combined to form a unit via narrow webs. Still remains the assembly and the connection of the two cover plates a laborious one and laborious process.

It is the object of the present invention to provide a clutch disc to be designed with torsional vibration damper according to the generic term, that on the one hand it meets the requirement for high rigidity and on the other hand it is easy to assemble.

copy

According to the invention, this object is achieved by the characteristic of Main claim solved. By forming the connection area at least one of the two cover plates in the form of Cup-like, deep-drawn areas become larger Achieved support zone between the two cover plates and on the other hand, the assembly compared to the prior art is much easier.

Further advantageous design options arise from the subclaims. For example, suggested both cover plates with cup-like, deep-drawn areas to be provided, which, however, are designed differently, so that the cup-like areas of a cover plate are those penetrate the other in a corresponding opening and experience a mutual connection there directly by flanging. In this case, a perfect and permanent connection can be made without additional riveting elements.

The invention is explained in more detail below on the basis of several exemplary embodiments. They show in detail:

Figures 1 and 2 longitudinal section and partial view of a

Clutch disc with Tors ion vibration damper; FIGS. 3 and 4 variant embodiments, excerpts.

Figures 1 and 2 show the longitudinal section and the partial view of a clutch disk 1. The clutch disk 1 consists in the usual way of a hub 6 with hub disk 7, from both sides of the hub disk 7 arranged sheets, one of which as a lining carrier 3 and the other are designed as a cover plate h , made of friction linings 2 connected to the lining carrier 3 on the outer circumference, which are connected to the lining carrier 3 via spring segments 4. In windows 9 of the hub disk 7, several torsion springs ί> distributed around the circumference and configured differently are arranged, which are connected via corresponding windows with the Be 1 agträcjer 3 and the cover plate Ί.

The last-mentioned parts represent a torsion vibration damper 8. The lining carrier 3 and the cover plate h are connected to one another in a rotationally fixed manner and are held at a predetermined axial distance. The connection of both parts, as shown in detail ¹¹ Z "is shown enlarged on the one hand on cup-shaped, deep-drawn areas 15 of the brake disk 3, which are arranged distributed radially in the region inside of the torsion springs 5 on the circumference. These areas 15 have approximately in the center of the Distance between the lining carrier 3 and the cover plate 4 has a bottom surface 18 which runs parallel to the two parts 3 and 4. This bottom surface is each provided with a round through opening Areas 17 provided, which run approximately conically in the direction of the lining carrier 3, form an annular bead 20 to rest on the bottom surface 18 of the area 15 of the lining carrier 3 and penetrate the through opening 19 of the area 15 with a tubular extension 21 The side opposite the bottom surface 18 becomes the tubular extension 21 through plastis during the manufacturing process che deformation to a rivet collar 22 folded radially outward. For example, three connection areas of this type distributed around the circumference ensure a rigid basic structure of the clutch disc 1. In order to save further space, the areas 15 of the lining carrier 3 according to FIG. 2 can be used as Verdrehwinke1ansch1 ag for the gate ion vibration damper 8 by penetrating extensions 23 of the windows 9 for the torsion springs 5 and, together with them, defining the maximum possible angle of rotation.

It has been found that for the lining carrier 3 preferably A case hardened material is to be used while a bath nitrided material is advantageous for the cover plate 4, since this material must be plastically deformed for the purpose of riveting.

Figures 3 and 4 show variants of the connection areas of Cover carrier and cover plate. Bel FIg. 3, both the lining carrier 10 and the cover plate 12 are designed identically to the Cover carrier 3 from Flg. 1. This creates two floor areas 18 of two areas 15 drawn in a cup-like manner opposite with two round through openings 19. Through these two through openings 19 a hollow rivet 14 is inserted from one side and riveted on the opposite side.

In Flg. h Is an embodiment selected in which the lining carrier 11 is provided with cup-like 11 ef-drawn areas 16 which extend in the axial direction according to the clear distance between the lining carrier 11 and the cover plate 13. The cover plate 13 can thus be made completely flat. The areas 16 are flush with the bottom surfaces 18 on the inside of the cover plate 13 and both parts are provided with through openings 19 in this area, through each of which a hollow rivet 14 is inserted and riveted. The two versions according to FIg. 3 and 4 are independent of the type of connection process in terms of their choice of material, since separate rivets are used.

As can be seen from FIG. 1, the torsion vibration damper can 8 radially within the verb IndunysbereI before from lining carrier and The cover plate can be provided with a conventional friction device 25.

FRP-2 Ho / Bb2
02/08/84

- s

GQPf

Leopard -

COPf

Claims (9)

34 05948 PATENT CLAIMS 1. Torsional vibration damper, especially for motor vehicle clutch disks, consisting among others from a hub with hub disc, arranged on both sides of the hub disc Cover plates, which are rotatably fixed to one another via connecting elements are connected and kept at a distance and one of which is designed as a lining carrier, characterized in that that at least one of the cover plates (3, 4, 10 to 13) in the connection area with cup-like, t1ef-drawn areas C15 to 17), which are in contact with the other cover plate and are riveted to this. 2. Gate I onsschw.I he ngungsdämpf according to claim 1, characterized in that both cover plates (3, 4; 10, 12) are provided with mutually corresponding cup-shaped, deep-drawn regions (15, 17) towards each other are directed \\ and which preferably come to rest against each other in the middle between the two cover sheets. 3. Tors ion vibration damper according to claims 1 and 2, characterized marked that both areas with roughly circular circles Bottom surfaces (18) bear against one another, both bottom surfaces each have a through opening (19) for the arrangement of a connecting rivet (14). 4. Tors ion vibration damper according to claim 3, characterized in that that the connecting rivet is designed as a hollow rivet (14) are. 5. torsional vibration damper according to claim 1, characterized in that that a cover plate (3) has cup-like, deep-drawn areas (15) with a flat bottom surface (18) and this bottom surface with a round through-gany opening (19) Is provided and the other cover sheet (Ό similar deep-drawn Areas (17) which, with the formation of a ring "wul-'itcs (20) each with a tubular extension (21) through the through opening (19) and on the opposite one Side has a circumferential rivet collar (22), wherein the annular bead (20) is supported on the bottom surface (18). 6. torsional vibration damper according to claim 5, characterized in that that the lining carrier (3, 10, 11) is preferably made of case-hardened material and the cover plate made of bath nitrided material. 7. Tors Ionsschwlngungsdampfer according to claims 1 to 6, characterized characterized in that the deep-drawn areas (15 to 17) radially inside that formed by the torsion springs (5) Ring area are arranged. 8. Tors ion vibration damper according to claim 7, characterized in that that the deep-drawn areas (15 to 17) with Corresponding recesses (23) in the hub disk (7) are designed as twisting angles. 9. Tors ion vibration damper according to claim 8, characterized in that that the recesses are preferably as radially inwardly directed extensions (23) of the windows (9) for the torsion springs (5) hidden in the hub disk (7) are. FRP-2 Ho / βb3
02/08/84