DE102009003812A1 - Active hydraulic bush bearing for use in vehicle construction, has vibration plate working together with elastic coating to function as membrane, which is shiftable into vibration by actuator, where vibration is controlled by actuator - Google Patents

Abstract

The bearing (1) has a vibration plate (9) arranged corresponding to an opening (6) in an outer housing (4). The plate works together with an elastic coating (8) of the outer housing to function as a membrane, where inner diameter of the opening in the outer housing is larger than outer diameter of the vibration plate. An actuator (13) stands in effective-connection with the vibration plate. The membrane is shiftable into vibration by the actuator, where the vibration is controllable by the actuator.

Description

The The invention relates to an active hydraulic bush bearing with a bush-shaped outer housing, a connecting piece, an elastic support body and a working chamber through the connector and / or the support body and is limited by the outer casing and with fluid is filled.

Such bearings are mainly used in vehicle construction and are designed for mounting in a cylindrical receiving eye. Such a bearing is for example in the DE 10 2008 032 642 disclosed.

Such bearings may also be provided with active elements for better control of the frequency response, which may act on the fluid in the working chamber. Such an active hydraulic bush bearing is in the DE 42 39 797 A1 disclosed. The working chamber is connected via an opening and a connecting channel in the outer housing with an auxiliary hydraulic chamber. A vibrating plate is controllable via corresponding electric actuators and acts via the auxiliary hydraulic chamber and the connecting channel to the hydraulic fluid in the working chamber.

These Arrangement increases the necessary volume of fluid and is quite expensive to assemble.

Of the Invention is based on the object, a bearing of the described Kind of simplifying it further.

• – dass das Außengehäuse mindestens eine Öffnung in seiner Wandung aufweist, die mit der Arbeitskammer in Verbindung steht,
• – dass das Außengehäuse eine elastische Beschichtung aufweist, die fest, unlösbar und fluiddicht mit dem Außengehäuse verbunden ist und die Öffnung des Außengehäuses fluiddicht abdeckt,
• – dass das Buchsenlager mindestens eine Schwingplatte aufweist, die korrespondierend zu der mindestens einen Öffnung im Außengehäuse des Buchsenlagers angeordnet ist, wobei die mindestens eine Schwingplatte derart ausgebildet ist, dass die Innenabmessungen der Öffnung im Außengehäuse größer sind als die Außenabmessung der Schwingplatte und die Schwingplatte mit der elastischen Beschichtung des Außengehäuses derart verbunden ist, dass die mindestens eine Schwingplatte mit der elastischen Beschichtung des Außengehäuses als mindestens eine Membran zusammenwirkt und
• – dass das Buchsenlager mindestens eine Aktor aufweist, der mit mindestens der einen Schwingplatte in Wirkverbindung steht, wobei die mindestens eine Membran aus elastischer Beschichtung und Schwingplatte durch den Aktor in Schwingungen versetzbar ist und die Schwingungen über den mindestens einen Aktor regel- und/oder steuerbar sind.

This task is solved by

• - That the outer housing has at least one opening in its wall, which communicates with the working chamber,
• - That the outer housing has an elastic coating which is fixed, non-detachable and fluid-tightly connected to the outer housing and the opening of the outer housing fluid-tight,
• - That the bush bearing has at least one vibrating plate which is arranged corresponding to the at least one opening in the outer housing of the bush bearing, wherein the at least one vibrating plate is formed such that the inner dimensions of the opening in the outer housing are larger than the outer dimension of the vibrating plate and the vibrating plate the elastic coating of the outer housing is connected such that the at least one vibrating plate cooperates with the elastic coating of the outer housing as at least one membrane and
• - That the bush bearing has at least one actuator, which is in operative connection with at least one vibrating plate, wherein the at least one membrane of elastic coating and vibrating plate by the actuator is set into vibrations and the vibrations on the at least one actuator regulated and / or controllable are.

The Arrangement of the vibrating plate and the elastic coating quasi As a membrane can be already with little effort, for example attach to the outer casing during vulcanization. The other components can be both before and after the Simply mount the vulcanization on the vibration plate. The fluid volume does not have to be enlarged.

In a development of the invention is the opening of the Outer casing covering elastic coating arranged on the outside of the outer housing.

These Arrangement has the advantage that the elastic coating at the same time to improve the interference fit of the outer housing can serve in an aggregate. It can be enough Thickness and / or corresponding shape also to the vibrating plate Protect installed actuator.

In a development of the invention is the opening of the Outer casing covering elastic coating arranged on the inside of the outer housing.

These Arrangement has the advantage that the elastic coating without further effort molded together with the support body and can be vulcanized.

In a development of the invention, the at least one with the at least one vibrating plate cooperating actuator in a Outside housing surrounding unit arranged and with firmly connected to this unit.

These Arrangement has the advantage that the actuator through the surrounding aggregate is well protected against damage. Is the Actuator detachably connected to the oscillating plate, the Actuator in a possibly bearing change remain in place.

In a development of the invention is the actuator with the outer housing firmly connected to the bush bearing.

These Arrangement has the advantage that a particularly short and direct Cooperation of the actuator with the vibrating plate possible is.

With reference to the drawing below Embodiment of the invention explained in more detail.

In the 1 is a bushing bearing according to the invention 1 shown as an isometric representation with an outbreak. The bush bearing 1 has a connector 2 , a supporting body 3 and an outer casing 4 on. The supporting body 3 is inside the outer casing 4 arranged and supports the connector 2 against the outer casing 4 elastic. The supporting body 3 has a cavity 5 which is completely filled with a non-compressible fluid and serves as a working chamber. The fluid is not shown here.

The outer housing 4 has an opening 6 on that with the working chamber 5 corresponds. To the outer case 4 is a gum 8th arranged with the outer casing 4 is firmly connected. In the area of the opening 6 of the outer casing 4 seals the rubber coating 8th the opening 6 fluid-tight, leaving no fluid from the working chamber 5 can escape.

In the area of the opening 6 is a swing plate 9 arranged, whose dimensions are chosen so that the vibrating plate 9 in the opening 6 fits in such a way that between swing plate 9 and opening 6 A gap 10 remains with the rubber of the gum 8th is filled. The swing plate 9 is with the gum 8th firmly bonded by vulcanization and forms with this a membrane, which within the opening 6 can swing. The entire bearing arrangement 1 is in an aggregate 11 being pressed in, by the aggregate 11 only a section is shown.

In the aggregate 11 is an actor 13 arranged, over an Aktorstempel 14 with the swinging plate 9 is in active connection. The Aktorstempel 14 is with the swinging plate 9 firmly connected. The actor 13 is firmly in the aggregate 11 pressed.

Electrical connections and control units, not shown here, are via the actuator 13 , the Aktorstempel 14 and the membrane of gum 8th and swing plate 9 Vibrations in the area of the opening 6 of the outer casing 4 to the fluid in the working chamber 5 be applied. This changes the pressure within the working chamber 5 and thus the rigidity of the bush bearing 1 ,

In this way, high-frequency vibrations of the unit can be 11 Insulate so that these do not have the connector 2 be introduced into adjacent components.

1

bush bearing

2

connector

3

supporting body

4

outer casing

5

Cavity, working chamber

6

Opening in the outer housing 4

8th

gumming

9

vibration plate

10

Gap between vibrating plate 9 and outer casing 4

11

aggregate

13

actuator

14

Aktorstempel

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 102008032642 [0002]
• - DE 4239797 A1 [0003]

Claims (5)

Active hydraulic bush bearing ( 1 ) with a bush-shaped outer housing ( 4 ), a fitting ( 2 ), an elastic support body ( 3 ) and a working chamber ( 5 ), through the connector ( 2 ) and / or the support body ( 3 ) and through the outer housing ( 4 ) is limited and filled with fluid, characterized in that - the outer housing ( 4 ) at least one opening ( 6 ) in its wall, with the working chamber ( 5 ), that the outer housing ( 4 ) an elastic coating ( 8th ), the fixed, non-detachable and fluid-tight with the outer housing ( 4 ) and the opening ( 6 ) of the outer housing ( 4 ) fluid-tight, - that the bush bearing ( 1 ) at least one vibrating plate ( 9 ) corresponding to the at least one opening ( 6 ) in the outer housing ( 4 ) of bush bearing ( 1 ), wherein the at least one vibration plate ( 9 ) is formed such that the inner dimensions of the opening ( 6 ) in the outer housing ( 4 ) are larger than the outer dimension of the vibrating plate ( 9 ) and the vibrating plate ( 9 ) with the elastic coating ( 8th ) of the outer housing ( 4 ) is connected such that the at least one vibrating plate ( 9 ) with the elastic coating ( 8th ) of the outer housing ( 4 ) cooperates as at least one membrane and - that the bush bearing ( 1 ) at least one actuator ( 13 ), which with at least one vibrating plate ( 9 ) is in operative connection, wherein the at least one membrane of elastic coating ( 8th ) and vibrating plate ( 9 ) by the actuator ( 13 ) is oscillatable and the vibrations via the at least one actuator ( 13 ) are regular and / or controllable. Bush bearing ( 1 ) according to claim 1, characterized in that the opening ( 6 ) of the outer housing ( 4 ) covering elastic coating ( 8th ) on the outside of the outer housing ( 4 ) is arranged. Bush bearing ( 1 ) according to claim 1, characterized in that the opening ( 6 ) of the outer housing ( 4 ) covering elastic coating ( 8th ) on the inside of the outer housing ( 4 ) is arranged. Bush bearing ( 1 ) according to claim 1, 2 or 3, characterized in that the at least one with the at least one vibrating plate ( 9 ) interacting actuator ( 13 ) in one the outer housing ( 4 ) surrounding aggregate ( 11 ) and with this unit ( 11 ) is firmly connected. Bush bearing ( 1 ) according to claim 1, 2 or 3, characterized in that the actuator ( 13 ) with the outer housing ( 4 ) of bush bearing ( 1 ) is firmly connected.