DE7234042U - Compression springs made of elastomer material, in particular for rail vehicles - Google Patents

Description

Kurt Pommereit
Elastomer products
GmbH & Co. KG

8500 Nuremberg

Koenigstrasse 34 Nuremberg, Sept. 12, 1972

Reg. 720902

COMPRESSION SPRING MADE OF ELASTOMEr MATERIAL ₇ ESPECIALLY FOR RAIL VEHICLES

The innovation relates to a compression spring made of elastomer material, in particular For rail vehicles In the form of a ring with cover plates firmly connected on both sides,

It is known that compression springs made of elastomer material are vulcanized onto them Cover washers are used, the spring washer as a cylindrical part is trained. However, these springs have the disadvantage that they are not uniform Have stress distribution and the spring deflection is small.

Even with known compression springs with a circular cross-section or such, which corresponds to this, there is an unequal stress distribution.

Furthermore, compression springs of this type are known which have a spring ring, which has an asymmetrical cross-sectional area. Although these spring washers have an even distribution of compressive stresses, they do not allow as required, an even distribution of compressive stresses with a soft start-up characteristic with the same final force, in particular with a higher loading speed or acceleration taking into account de. associated hardening of the characteristic curve.

-2-

- 2 - Reg. 720902

The task of the innovation is to eliminate this disadvantage in spring elements of the type mentioned in more detail at the beginning.

This object is renewal according achieved in that the cross-sectional area of the spring ring of a convex outside and a relation to the center line oblique inner side is limited, the edge transition of the konveKen outside to the two Dedrscheiben in the form of a tongue-like recess is formed and the Verbindungutellen with Ra - * are provided.

Furthermore, an advantageous embodiment of the compression spring is given by that the inner sides, which are inclined with respect to the center line, have the shape of a polygon.

In another advantageous development, the upper cover disk the spring ring has an inner perforation which is adapted to the polygonal shape of the spring ring and the lower cover plate has a circular perforation, whose diameter is smaller than the polygonal opening of the upper cover disk.

In the following, using FIGS. 1 and 2, an exemplary embodiment 4 is shown Innovation described.

It shows:

Fig. 1 is a side view of the proposed compression spring, half of the spring is shown in section and

Fig. 2 is a plan view of Fig. 1, the lower half of the Drawing is shown broken off.

-3-

- 3 - Reg. 720902

According to FIG. 1, the proposed compression spring has a spring ring 1 Elastomer material on / whose cross-sectional area 2 is bounded by a convex outer side 3 and an inclined inner side 4 with respect to the center line The edge transition from the convex outside 3 to the upper cover plate 5 and to the lower cover plate 6 has a tongue-like indentation 7 and 7 '. The tongue-like indentations 7 and 7' penetrate about a third into the cross-sectional depth of the spring washer 1. The width of the tongue-like indentations is selected depending on the desired starting characteristic »The connection points between the indentations 7 and 7 'and the convex outside 3 of the spring ring 1. and the cover disks 5 and 6 have the radii 9/10 and 9V10 '. The funnel-like depressions shown in FIG wart-like bulges of the lower cover plate 6 are not part of the protection request and are therefore not described in more detail.

Figure 2 shows the inner polygon 8 of the spring ring 1 with the opposite of the Center line inclined side walls 11. The lower cover plate 6 has predominantly a circular perforation 12, the diameter of which is smaller than the polygonal opening of the upper cover disk 5.

PROTECTION CLAIMS: -4-

Claims (1)

- 4 - Reg. 720902 PROTECTION CLAIMS 1, compression spring made of elastomer material, in particular for rail vehicles in the form of a ring with cover disks firmly connected on both sides, characterized in that the cross-sectional area (2) of the spring ring (1) has a convex outer side (3) and an inner side inclined with respect to the center line ( 4) is limited, the edge transition from the convex outside (3) to the two cover plates (5/6) being designed in the form of a tongue-like indentation (7/7) and the connection points being provided with radii (9/10). 2, compression spring according to claim 1, characterized in that the inner sides are inclined with respect to the center line have the shape of a polygon (8). 3, compression spring according to claims 1 and 2, characterized in that the upper cover disk (5) of the spring ring (1) has an inner perforation (12) which has the polygonal shape (8) of the spring ring is adapted and that the lower cover plate (6) has a circular hole (12), the diameter of which is smaller than the polygonal opening of the upper cover disk is.