DE7911430U1 - Elastic bearing - Google Patents

Description

Raoul Jörn

Elastic bearing

An elastic bearing is known (P 28 16 742.2), in particular for attaching the rear axle auxiliary * carrier on a cantilevered body of a passenger car or the cab of a truck on the vehicle frame, consisting of an outer cylindrical and an inner metal part, both of which are used for connection are formed on the vehicle parts to be connected to one another, with metal parts firmly adhering to them between the metal parts Vulcanized rubber bodies are provided, the outer metal part consisting of two separate half-shells of a hollow cylinder exists and the guinmic body is prestressed in the installed state, closing the separation points of the outer half-shells and the inner metal part is approximately rectangular in cross-section perpendicular to the longitudinal axis, wcLei the wider, slightly outwardly curved side surfaces of the inner metal part due to the vulcanized guinmic bodies are each connected to an outer shell half.

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The object of the additional invention is to make this bearing also suitable for the elastic mounting of engines in trucks, cars or other assemblies. For this case the bearing is arranged with a horizontal axis perpendicular to the direction of the motor on both sides of the motor so that it is vertical Forces from the engine weight or from rotary movements of the engine around its longitudinal axis stress the rubber of the element to thrust In contrast, the bearing has a steep spring characteristic in the direction of travel, because the Guarni is under pressure here. That The bearing is therefore not very flexible against braking or acceleration forces. The engine mount is designed in the same way for standing or horizontal in-line engines and V-engines. For the use of the bearing as an engine bearing, however, the high dynamic stress due to the force curve of the element can be optimally designed.

The additional invention solves this problem, whereby the Ne '"e consists in the fact that the outer, semi-cylindrical shells forming metal parts in their »area opposite the center of the inner metal part, which has the outer adhesive surfaces the Gumaikfirper forms, are deformed to flat surfaces, in such a way, that their radial sections form chords of the outer cylinder and these flat surfaces parallel xu the lateral adhesive surfaces of the other metal part. Through this we achieve

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that the wall thickness of the rubber between the inner and outer metal parts is the same everywhere, although the receiving housing is designed round because the adhesive surfaces on the inside and outside are flat and parallel. Hence step when loaded, there are pure shear stresses that are evenly distributed, and stress peaks, especially at the edges, are avoided. The bearing can therefore withstand high operating loads and has a high fatigue strength. The outer shells can also be deformed so that each half-shell has two flat surfaces inclined towards each other at a flat angle. The inner part is designed accordingly so that there are parallel adhesive surfaces on the inner and outer part are. With bearings of this type, superimposed compressive stresses also occur under load in addition to pure visual lifting stresses. You have the option of influencing the spring characteristics and the To coordinate the requirements of the installation accordingly.

A particular advantage of this engine mount is that

I the outer housing can be manufactured from commercially available pipe with very little effort. There are practically no tools costs. The warehouse is therefore particularly suitable for small numbers of items.

The bearings according to the invention can also be used for other applications, especially when a round outer

shape is desired, the radial spring constants in two coordinate directions must be very different, a high radial force absorption is desired and only minimal Twists occur.

The invention is explained with reference to drawings j it shows:

Fig. 1 plan view and partial section of a fiction

according to engine mount

FIG. 2 shows a longitudinal section to FIG. 1; FIG.

Fig. 3 top view and detail of another

also with respect to FIGS. 1 and 2 modified embodiment;

4 shows a longitudinal section to FIG. 3;

Fig. 5 receiving bearings for the embodiment according to FIGS. 3 and 4 and

Fig. 6 receiving bearing with compared to FIG. 5 changed Embodiment.

In Figs. 1 and 2, the two outer, substantially semi-cylindrical shells (la, 2a) are deformed so that flat Streams (23, 24) arise in the area of the vulcanized rubber bodies (7a, 8a). These flat surfaces lie with the vulcanized Part parallel to the lateral adhesive surfaces (5a) of the central metal part (3a).

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In FIGS. 3 and 4, the half-shells (la and 2a) are of this type varfomat that two flat surfaces (25 or 26) are created, which are inclined towards each other. The prismatic inner part (3b) has flat side surfaces in the area of the adhesive surfaces, which are inclined to one another in such a way that they are parallel to the flat parts (25 \ », Nd 26) of the outer half-shells.

Fig. 5 shows a bearing design according to FIGS. 3 and 4, the is pressed into a cylindrical receiving eye (22b). The receiving eye consists of a commercially available piece of pipe that Has fastening flanges (28) which are perpendicular to the axis of the bearing.

In the case of the receiving eye according to FIG. _9, in which the receiving eye (22a) is again made from commercially available pipe, flanges (27) are welded on in such a way that the fastening is parallel to the bearing axis.

Claims (1)

■ t / (nspruch Elastic bearing according to patent (patent application P 28 16 7 «t2.2), characterized in that the outer, semi-cylindrical shells forming metal parts (la, 2a) in their middle of the inner metal part (3a, 3b) opposite area, which forms the outer adhesive surfaces of the rubber body, to level Surfaces (23, 21 and 25, 26) are deformed such that their Form radial sections 3 tendons of the outer cylinder (la, 2a) and these flat surfaces parallel to the lateral adhesive surfaces (5a, 6a) of the middle metal parts (3a, 3b) run.