DE102015219168A1 - Damper bearings for motor vehicles - Google Patents

Abstract

Damper bearing (1) for mounting a shock absorber (6), in particular in an air spring (20), for motor vehicles, with an elastomeric damping element (2) and a support disc (4), wherein the damper bearing (1) via the damping element (2) a vehicle body (3), in particular with an air spring cover (21), is connectable, wherein the support disc (4) partially in the damping element (2) is arranged and the support disc (4) has an inner recess for connection to a piston rod (5) Shock absorber (6), wherein the piston rod (5) via the means for receiving a gimbal movement of the piston rod (7, 8, 9, 10, 11, 17) with the support disc (4) is connected in stock.

Description

The invention relates to a damper bearing according to the preamble of claim 1.

From the DE 10229287 A1 is a damper bearing for the storage of shock absorbers in motor vehicles known. About the damper bearing a shock absorber is connected to the vehicle body. The damper bearing consists essentially of a support plate and an elastomeric damping element. The support plate is embedded in the damping element and attached to the shock absorber. The damping element is in turn connected to the vehicle body. This design of the damper bearing is intended to absorb the axial movement of the shock absorber or reduce the axially acting forces of the shock absorber on the vehicle body. Transverse forces of the shock absorber can only be partially absorbed by the damper bearing.

In motor vehicles more and more air springs are installed. In this case, located within the air spring of the shock absorber, which is connected via the damper bearing with the air spring cover, wherein the air spring cover is connected to the vehicle body. Especially with air springs, which are to offer a high standard of comfort, the storage of the shock absorber is of great importance. The requirements of such a damper bearing in air springs require comfort as possible flexible elastomeric damping elements, which must meet higher requirements in ever smaller spaces. The forces to be transmitted lead to a high specific load of the damper material. The cardan forces additionally reduce the effective area of the working elastomeric damping element, whereby the gimbal forces are only partially absorbed. Consequently, these forces are transmitted to the vehicle body and lead to a loss of comfort. Instead of the ideally annular power transmission from the shock absorber on the support plate in the damping element, it comes in extreme cases to a selective introduction of force from the damping element in the air spring cover or in the vehicle body. As a result, the elastomeric damping element is overloaded and this leads to a failure of the component.

Therefore, it is an object of the invention to provide an improved damper bearing for shock absorbers in motor vehicles, which makes it possible to better damp the forces acting on a shock absorber and to reduce the transmission to the vehicle body.

The problem underlying the invention is achieved with the features of the independent claim.

According to the invention, the damper bearing serves to mount a shock absorber for motor vehicles. The damper bearing comprises an elastomeric damping element and a support disk, wherein the damper bearing is connectable via the damping element with a vehicle body. The support disk is partially disposed in the damping element and the support disk has an inner recess for connection to a piston rod of the shock absorber, wherein the piston rod is connected in stock via a means for receiving a gimbal movement of the piston rod with the support disk.

Preferably, the damper bearing is for storage of the shock absorber within an air spring, wherein the damper bearing is connected via the damping element with an air spring cover.

Preferably, the elastomeric damping element is designed as a ring, wherein the support disk is radially embedded in a groove within the damping element.

Further preferably, the means for receiving a gimbal movement circumferentially surrounds the piston rod in a limited piston area.

According to a preferred embodiment, the means comprises a sliding element or a deformable element.

Advantageously, the cardanic movements or forces acting on the piston rod of the shock absorber are absorbed via the means for receiving the gimbal movement of the piston rod. Thus, the elastomeric damping element is decoupled or relieved of the inclusion of cardanic forces. This results in an advantageous annular force introduction of the axial forces on the damping element by means of the means for receiving a gimbal mobility of the piston rod is maintained.

According to a preferred embodiment of the damper bearing, the means comprises as a sliding element a spherical plain bearing with a convex or concave outer contour.

In this case, advantageously, the inner recess of the support disc on a concave inner contour, which is designed to match the convex outer contour of the hinge bearing. Alternatively, the inner recess of the support disk on a convex inner contour, which is formed to match the concave outer contour of the hinge bearing.

As a result, a movable or sliding bearing between spherical bearings and Support disc provided. This has the advantage that a precise and direct movement of the piston rod is made possible in the storage, whereby there is no entanglement within the damper bearing.

Preferably, spherical plain bearing and support plate are made of a metallic material or a plastic.

According to a further preferred embodiment of the damper bearing, the means comprises a sleeve and a deformable elastomeric element, wherein the elastomeric element is connected to the sleeve and the support plate.

Preferably, the elastomeric element comprises the sleeve and is vulcanized together radially between the sleeve and the support plate with these components.

Further preferably, the damping element absorbs damping forces in the axial direction of the shock absorber, and the elastomer element absorbs the cardanic deflection of the shock absorber in a damping manner.

This embodiment is advantageous for small cardan gimbals and can be produced inexpensively. Because with gimbal deflection, the elastomer element allows an entanglement of the sleeve relative to the support plate.

According to a further preferred embodiment of the damper bearing, the means comprises at least one deformable plate spring.

Preferably, the means further comprises a sliding element as a sliding sleeve, wherein the at least one disc spring rests against the outer contour of the sliding sleeve.

It is also preferred that at least one disc spring is disposed above the support disc fitting and at least one disc spring is disposed below the support disc fitting.

Advantageously, a plurality of disc springs above and / or below the support plate are each arranged in parallel circuit.

Preferably, in the disc springs above the support plate, the inner edge is directed upward and in the disc springs below the support plate of the inner edge is directed downward.

Diaphragm springs ideally allow a transmission of high forces in the smallest space. At the same time, the plate springs have a centering effect on the support disk or the piston rod, whereby a cost-effective design can be provided. Disc springs also have the advantage that their characteristic is not linear. With parallel disc springs, the spring force increases steadily with a small spring travel. That at extreme forces, as they occur when the shock absorber stop, the disc springs lose their elasticity and can thus absorb higher forces.

Due to the block size of the plate springs a travel limit is created and by means of the arrangement of disc springs with the support disk mobility of the damper bearing is allowed in spite of high forces the support plate against the plate springs remains braced and no play arises.

The disc springs are also designed so advantageous that they can absorb axial forces and thus together with the damping element form part of the damper bearing characteristic of the entire damper bearing.

According to a further preferred embodiment of the damper bearing, the means by means of a damper nut is frictionally attached to the piston rod.

Preferably, the joint bearing, the sleeve or the sliding sleeve is firmly fixed in a recess of the piston rod.

Advantageously, the axially introduced forces of the shock absorber are introduced and received directly by means of the frictional connection of the damper nut via the means for receiving a gimbal movement of the piston rod by means of the support disk in the elastomeric damping element.

Use finds the damping bearing for the storage of shock absorbers against a vehicle body preferably in air springs.

Further preferred embodiments of the invention will become apparent from the subclaims and the following description of exemplary embodiments with reference to the figures.

Show it

1 a well-known damper camp,

2 a known damper bearing in an air spring module,

3 an exemplary damper bearing with a spherical plain bearing,

4 an exemplary damper bearing with a spherical plain bearing in an air spring module,

5 an exemplary damper bearing with an elastomeric element in an air spring module,

6 an exemplary damper bearing with disc springs in an air spring module and

7 the exemplary damper bearing with disc springs with gimbal deflection.

1 shows a known damper bearing 50 , wherein at a recess of the piston rod 5 and damper nut 14 carrying disc 4 is attached. carrying disc 4 is partially in a groove within the annular damping element 2 admitted. damping element 2 is about fasteners 15 to vehicle body 3 fixed. By means of damping element 2 can axial forces of the piston rod 5 of the shock absorber on the vehicle body 3 be reduced.

Further shows 2 a well-known damper bearing 50 in an air spring module 20 , Leveling Module 20 includes air spring cover 21 , Outside guide 23 , Air bellows 22 , Rolling piston 24 and additional spring 25 , shock absorber 6 with piston rod 5 is about damping element 2 instead of with the vehicle body with air spring cover 21 connected. Air spring cover 21 can in turn be connected to the vehicle body.

3 shows an exemplary damper bearing 1 , On piston rod 5 is a joint bearing 7 with convex outer contour by means of damper nut 14 attached. At articulated bearings 7 again lies support disc 4 slidably and rotatably, with support disc 4 having an inner recess with matching concave contour. Spherical plain bearings 7 takes along with carrier disc 4 a gimbal deflection of the piston rod 5 on. carrying disc 4 is in a groove within the annular damping element 2 let in, which axial forces of the piston rod 5 or the shock absorber receives. Also be by means of frictional connection of spherical plain bearings 7 and support disc 4 the axial forces of the piston rod 5 or the shock absorber and absorbed in damping element 2 directed.

In 4 is the exemplary damper bearing 1 out 3 in an air spring module 20 shown. The air spring module 20 otherwise corresponds to the air spring module of 2 , For this purpose, reference is made to the above description.

5 shows an exemplary damper bearing 1 with sleeve 8th and elastomeric element 9 in the upper part of an air spring module 20 , shell 8th is by damper nut 14 on piston rod 5 attached. To sleeve 8th is radially comprising elastomeric element 9 vulcanized and elastomeric element 9 is in turn in an inner recess of the support plate 4 vulcanized. shell 8th has a convex outer contour and washer 4 has a corresponding concave contour in the inner recess. elastomer element 9 is formed corresponding arched. As a result, an advantageous movable and deformable storage is realized because at cardan deflection entangled sleeve 8th opposite support plate 4 , As a means for receiving a gimbal movement of the piston rod 5 take sleeve 8th and elastomeric element 9 the gimbal deflection of the piston rod 5 on. carrying disc 4 is in a groove within the annular damping element 2 let in, which the axial forces of the piston rod 5 or the shock absorber 6 receives.

6 shows an exemplary damper bearing 1 with disc springs 10 . 11 in the upper part of an air spring module 20 , Above support disc 4 are adjacent disc springs 10 arranged and below the support plate 4 are adjacent disc springs 11 arranged. The inner edge of the upper disc springs 10 is directed upwards, with the inner edge of the lower disc springs 11 directed downwards. Thus, in this embodiment, in each case above and below the support disk 4 several disc springs 10 . 11 arranged in parallel circuit. The annular disc springs 10 . 11 lie inside turn on an outer contour of a sliding sleeve 17 moving and sliding. sliding sleeve 17 , upper plate spring 10 , lower plate spring 11 and support disc 4 are by damper nut 14 on piston rod 5 attached. As a means for receiving a gimbal movement of the piston rod 5 take upper and lower plate spring 10 . 11 the gimbal deflection of the piston rod 5 on and simultaneously act centering on piston rod 5 , Disc springs 10 . 11 can absorb high forces in this embodiment and generate by their block dimension a certain travel limit, in the support plate 4 opposite disc springs 10 . 11 strained. Thus, upper and lower disc springs can 10 . 11 together with damping element 2 axial forces of the piston rod 5 or the shock absorber record.

7 shows an exemplary damper bearing 1 with disc springs 10 . 11 at gimbal deflection 13 , This is the gimbal deflection 13 the piston rod 5 around the fulcrum 16 opposite the undeflected axis 12 the piston rod 5 clarified. Upper and lower plate spring 10 . 11 allow the gimbal deflection 13 the piston rod 5 while a frictional connection between disc springs 10 . 11 and support disc 4 remains and still in the inner recess of the support disk 4 enough play to gimbal maneuverability of the piston rod 5 persists.

LIST OF REFERENCE NUMBERS

1

 top mounts

2

 damping element

3

 vehicle body

4

 carrying disc

5

 piston rod

6

 shock absorber

7

 Spherical plain bearings

8th

 shell

9

 elastomeric element

10

 Belleville spring

11

 Belleville spring

12

 Axle piston rod

13

 gimbal deflection

14

 damper mother

15

 attachment

16

 pivot point

17

 sliding sleeve

20

 Leveling Module

21

 Air spring cover

22

 suspension bellows

23

 external guide

24

 roll-off

25

 additional spring

50

 top mounts

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10229287 A1 [0002]

Claims (13)

Damper bearing ( 1 ) for mounting a shock absorber ( 6 ), in particular in an air spring ( 20 ), for motor vehicles, with an elastomeric damping element ( 2 ) and a support disc ( 4 ), wherein the damper bearing ( 1 ) via the damping element ( 2 ) with a vehicle body ( 3 ), in particular with an air spring cover ( 21 ), the support disc ( 4 ) partially in the damping element ( 2 ) is arranged and the support disc ( 4 ) an inner recess for connection to a piston rod ( 5 ) of the shock absorber ( 6 ), characterized by a means ( 7 . 8th . 9 . 10 . 11 . 17 ) for receiving a gimbal movement of the piston rod, wherein the piston rod ( 5 ) on the means ( 7 . 8th . 9 . 10 . 11 . 17 ) with the support disk ( 4 ) in stock. Damper bearing ( 1 ) according to claim 1, characterized in that the means ( 7 . 8th . 9 . 10 . 11 . 17 ) the piston rod ( 5 ) encloses. Damper bearing ( 1 ) according to claim 1 or 2, characterized in that the means comprises a sliding element ( 7 . 17 ) or a deformable element ( 9 . 10 . 11 ). Damper bearing ( 1 ) according to one of claims 1 to 3, characterized in that the means a, in particular sleeve-shaped, spherical plain bearings ( 7 ) with convex or concave outer contour. Damper bearing ( 1 ) according to claim 4, characterized in that the inner recess of the support disc ( 4 ) has a concave inner contour which matches the convex outer contour of the spherical plain bearing ( 7 ), or that the inner recess of the support disc ( 4 ) has a convex inner contour which matches the concave outer contour of the spherical plain bearing ( 7 ). Damper bearing ( 1 ) according to one of claims 1 to 3, characterized in that the means comprises a sleeve ( 8th ) with an elastomer element ( 9 ), wherein the elastomeric element ( 9 ) with the sleeve ( 8th ) and the support plate ( 4 ) connected is. Damper bearing ( 1 ) according to claim 6, characterized in that radially between the sleeve ( 8th ) and the support plate ( 4 ) the elastomer element ( 9 ) vulcanized on both sides. Damper bearing ( 1 ) according to claim 6 or 7, characterized in that the damping element ( 2 ) in the axial direction of the shock absorber ( 5 ) Absorbs forces damping and the elastomeric element ( 9 ) in gimbal deflection of the shock absorber ( 5 ) Absorbed forces absorbing. Damper bearing ( 1 ) according to one of claims 1 to 3, characterized in that the means at least one plate spring ( 10 . 11 ). Damper bearing ( 1 ) according to claim 9, characterized in that the means a sliding sleeve ( 17 ), wherein the at least one plate spring ( 10 . 11 ) on the outer contour of the sliding sleeve ( 17 ) is present. Damper bearing ( 1 ) according to claim 9 or 10, characterized in that at least one disc spring ( 10 ) above the support plate ( 4 ), in particular on the support disk ( 4 ) is arranged, and that at least one disc spring ( 11 ) below the carrier disc ( 4 ), in particular on the support disk ( 4 ) adjacent, is arranged. Damper bearing ( 1 ) according to one of claims 9 to 11, characterized in that in each case a plurality of disc springs ( 10 . 11 ) are arranged above and / or below the support plate each in parallel circuit. Damper bearing ( 1 ) according to one of claims 1 to 12, characterized in that the pivot bearing ( 7 ), the sleeve ( 8th ) or the sliding sleeve ( 17 ) by means of a damper nut ( 14 ) non-positively on the piston rod ( 5 ) is attached.

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