DE102012202312B4 - Fluid-fillable elastomer bearing - Google Patents

Abstract

Elastomeric bearing with a one-piece bearing housing (1) through which a hydraulic unit is accommodated, the hydraulic unit fixed in the bearing housing (1) consisting of an elastomeric support body (2), an elastomeric bellows (7), at least two in the direction of the bearing axis (17) chambers (3, 4) arranged one below the other and which can be filled with a fluid damping agent and a channel support element (5) spatially separating the chambers (3, 4) from one another and having at least one channel formed therein and connecting the chambers (3, 4) to one another in a flow-conducting manner (6), the hydraulic unit being mountable in the axial direction (18) in the bearing housing (1) and being mounted between the bearing housing (1) and a part of an upper channel disk (8) or a lower channel disk (9) of the channel support element (5) formed adapter ring (10) resulting form fit in the bearing housing (1) can be fixed, wherein the upper chamber (3) by a en in a frictional connection or in a frictional and positive connection in the adapter ring (10) held radially outer area (11) of the support body (2) and the lower chamber (4) by the in a press fit on the lower channel disc (9) or bellows (7) held between the channel washers (8, 9) is sealed against escape of damping agent, characterized in that the bearing housing (1) has a circumferential direction (19) extending at least in sections on its inner surface, with respect to the axial direction (18) at the height of the channel support element (5) of the hydraulic unit fixed in the bearing housing (1) formed projection (14), which in the axial direction (18) on both sides by a radially outwardly directed collar (15, 15 ') of the adapter ring (10) is attacked.

Description

The invention relates to an elastomer bearing, also referred to as a hydraulic bearing. Accordingly, it relates to an elastomer bearing whose damping behavior is largely determined by a hydraulic unit, which comprises at least two chambers that can be filled with a damping agent or a fluid. In particular, the invention relates to a bearing in which the chambers are arranged one below the other in relation to the bearing axis, i.e. to an axially acting bearing or an axial bearing, i.e. to a bearing whose main load direction coincides with the bearing axis when used as intended.

Hydraulic mounts of the aforementioned type are used in particular in vehicles at different points, for example to mount the engine or aggregates. Their operating principle is based on the fact that, in addition to an elastomeric supporting body with a dampening effect, they have a hydraulic damping system which is implemented in that at least two chambers for a damping agent are formed in the elastomeric bearing and are connected to one another in a flow-conducting manner by a channel. The elastomeric support body, the chambers and elements for forming the channel connecting the chambers to one another are accommodated by a bearing housing, through which the bearing is mechanically stabilized and a supporting structure is formed. With regard to the chambers formed in the bearing and to be filled with the damping agent, it must be ensured that the bearing is reliably sealed by the supporting housing structures against escape of damping agent after its components accommodated in the housing have been assembled.

In the case of the bearings of the prior art, the aforementioned housing structures are generally implemented using metallic materials. The bearing is sealed against liquid leakage by acting on the housing with sealing techniques such as flanging, rolling or riveting. To facilitate assembly, the housings are usually made in two parts, particularly in the case of axial bearings, such as engine bearings or unit bearings. In this case too, however, it must be ensured in any case that the bearing is reliably sealed after the assembly of its housing parts.

the JP 2009 - 250 331 A describes an assembly bearing with a housing made of plastic, a first fastening element, which is inserted into a housing opening of the housing, a second fastening element, a rubber-elastic suspension spring body, by means of which the first fastening element and the second fastening element are elastically coupled to one another, a membrane held by a membrane ring , by means of which a side of the first fastening element facing away from the second fastening element is closed, and a separating element, by means of which a liquid chamber provided between the suspension spring body and the membrane is divided into a main liquid chamber and an auxiliary liquid chamber. The housing comprises a radial inner shoulder against which the first fastening element is pressed in the axial direction by means of the diaphragm ring, and an axial projection which penetrates a through hole provided in the diaphragm ring and forms an enlarged section at its end protruding outwards from the through hole, so that the diaphragm ring and the first fastener are trapped between the enlarged portion and the inner shoulder.

the DE 10 2010 046 885 B3 discloses a hydro bearing with an inner bearing made from as many plastic parts as possible, with a connection between a bearing cap, a rolling bellows, a nozzle body and a bearing spring as plastic parts and a bearing body being made by clipping the bearing body to the bearing cap, the hydro bearing having a stable stop housing which can be connected to a carrier at fastening points by means of suitable fastening elements. The stop housing is connected to the inner bearing by clipping the stop housing to the bearing cap, with the connection of the stop housing to the carrier relieving the clipping and the acting operating forces being transmitted to the carrier via the stop housing and the bearing cap.

the DE 10 2004 039 825 A1 describes a hydraulically damping bearing with a first anchoring part, which is supported on a second anchoring part via an elastic supporting body, with a working chamber filled with damping fluid, which is connected to a fluid-conducting chamber via a damping channel arranged in a nozzle body with a compensation chamber closed off by a rolling bellows, with a The bearing cap overlaps the rolling bellows, the edge of which is positively connected to the rolling bellows, the nozzle body and the supporting body, the connection between the bearing cap, the rolling bellows, the nozzle body and the supporting body being effected by clipping the supporting body to the bearing cap.

the DE 10 2008 007 137 A1 discloses a hydraulically damping assembly mount with rights ck-shaped basic shape, comprising a support bearing and a support, which are connected to one another by a support spring made of rubber-elastic material, and a working chamber and a compensating chamber, which are each filled with damping fluid and are fluid-conductingly connected by a damping channel, the support spring being connected to the support bearing and is assigned to the support unbound, the damping channel being delimited by a nozzle cage produced separately from the supporting bearing and the support, and the support having a fastening device for fastening the unit mount to a machine element.

the DE 10 2010 004 381 A1 describes a hydro-elastic functional part for mounting a motor vehicle part on its body, comprising a spring body, at least one hydraulic working chamber, a device for fastening the functional part to a supporting frame fixed to the body and a flange on the motor vehicle part for fastening the functional part to the motor vehicle part, the hydraulic working chamber is delimited by components of the functional part without the support frame and the functional part forms a component unit that can be inserted into the support frame, the fastening device being designed to release the functional part fastened to the support frame from it again.

the DE 699 09 018 T2 discloses a hydroelastic support intended to be inserted between two elements to be hung together, comprising a body formed by a mass of elastomer connecting an upper bracket and a lower bracket, each fixed to one of the two elements are, a working chamber delimited by the mass of elastomer and by a bulkhead of a unit comprising an expansion chamber delimited by a lower flexible membrane and by the bulkhead, the expansion chamber being related to the working chamber by a channel with to its diameter of great length and connected by connecting orifices and the chambers are filled with liquid, the unit being independent of the body and having a peripheral ring provided with a rim for crimping on the lower fitting of this body and with a rim for crimping on the lower flexible membrane is provided.

US 2011 / 0 133 375 A1 describes a vehicle engine mount with a rubber suspension spring defining a main liquid chamber, a fastening bolt for mounting a vehicle engine coupled to the suspension spring, an inner housing which supports the suspension spring, and a housing which surrounding the suspension spring and the inner housing. At least one projection is formed on the outer circumference of the inner housing, with at least one recess being formed in the housing, with which the at least one projection of the inner housing is coupled. Further, in a lower case portion, a bent portion having a retaining projection is formed by bending a case distal end inward, and a diaphragm is fixed to the retaining projection of the bent portion and the inner case (60).

the EP 2 381 127 A1 discloses a hydraulically damped mount having a mounting spring made of an elastomeric material to support a mounting core, a working chamber defined by the mounting spring, and a balancing chamber separated from the working chamber by an intermediate plate and by a balancing diaphragm made of an elastomeric material. The working chamber and the compensating chamber are filled with hydraulic fluid and connected to one another by an overflow, with the intermediate plate including a fixing device for the compensating membrane. The locator is pivotally mounted on the intermediate plate so that it secures the compensating diaphragm to the intermediate plate when the hydraulically damped mount is assembled.

Recently, with efforts being made to reduce the weight of vehicles, plastic materials have been increasingly used. This also applies to elastomeric bearings, which in the meantime therefore more often have elements made of plastic. For example, it is common practice to design a channel carrier element that accommodates the at least one channel as a plastic part. However, plastic is also sometimes used in the design of the supporting housing structures. The problem here, however, is that the previously mentioned closure methods for liquid-tight reshaping of the housing elements cannot easily be transferred to elements made of plastic. For example, techniques such as beading or rolling cannot be used at all with plastic elements.

With regard to the two-part design of the bearing housings that has been customary up to now, it should be noted that to reduce the number of components, bearing housings that are designed in one piece are sometimes also used, regardless of the question of the material used for the bearing housing. A so-called drawer solution is known for introducing the hydraulic unit into a bearing with a one-piece housing according to which the hydraulic components are part of a unit that is pushed in to a certain extent in the manner of a drawer from the side over the lateral surface of the bearing housing. However, this solution leads to a weakening of the housing structure, as a result of which the long-term reliability of the sealing of the housing against leakage of damping agent could possibly suffer.

The problems mentioned above are solved by the elastomer bearing proposed here. Its advantageous design takes into account both the requirements for weight reduction and a simple structure as well as for a liquid-tight housing and also allows cost-effective production due to simple assembly. For this purpose, the elastomer bearing has the features specified in patent claim 1 . Advantageous training and further developments are given by the dependent claims.

The proposed elastomeric bearing essentially consists of a one-piece bearing housing and a hydraulic unit, which is accommodated by the bearing housing and fixed in position therein. The aforementioned hydraulic unit is formed by an elastomeric support body, an elastomeric bellows, two chambers that can be filled with a fluid damping agent and a channel support element that spatially separates the chambers from one another, with at least one channel connecting the two chambers in a flow-conducting manner being formed in the channel support element. The two chambers, a working chamber and a compensating chamber, are arranged one below the other in the elastomer bearing in relation to its bearing axis or to the axial direction. Accordingly, the elastomer bearing is an axially acting bearing, ie a bearing with a damping effect that mainly exists in the direction of the bearing axis, such as an assembly bearing or an engine bearing.

According to the proposed design, the elastomer bearing is designed such that its hydraulic unit can be mounted in the bearing housing in the axial direction, namely preferably from the lower axial end of the bearing, despite a one-piece bearing housing that is preferably predominantly closed in the circumferential direction. The hydraulic unit is fixed in the bearing housing by a form fit between the bearing housing and an adapter ring, the aforementioned adapter ring being designed as part of an upper channel disk or a lower channel disk of the channel support element. At the same time, the upper chamber is sealed against the escape of damping agent by a radially outer region of the supporting body held in a force fit or in a force and form fit in the adapter ring. The sealing of the lower chamber, which functions as a compensating chamber, is given by the fact that the elastomeric bellows is held in a press fit on the lower channel disk or between the two channel disks.

The number of elements forming the bearing is advantageously limited to a comparatively small number, as can be seen from the above explanations. Despite the one-piece design of the bearing housing that contributes to this, the possibility of mounting the hydraulic unit in the axial direction is given by the special design of the bearing. Weakening of the structural design, as is the case, for example, with the so-called drawer solutions, in which the hydraulic unit or hydraulic unit is pushed laterally into the bearing through the peripheral surface of the bearing housing, are advantageously avoided in this way. As a result, with regard to the damping means, a high sealing effect is achieved even over long periods of use, so that the bearing has excellent endurance properties. The fastening principle of the hydraulic unit, which can be used with particular advantage in the case of one-piece bearing housings made of plastic, can advantageously also be used in the case of housing structures made of die-cast aluminum or steel. It is possible to implement a modular principle in which different components can be assembled according to the respective requirements, for example one and the same hydraulic unit can be optionally inserted into a bearing housing made of plastic or one made of die-cast aluminum. As can be seen from the above explanations, the adapter ring integrates various functions both with regard to the assembly of the bearing and its operation. In particular, the hydraulic unit is fixed in the bearing housing by means of the adapter ring and the bearing is sealed against leakage of damping agent by the force or force and form connection of the outer area of the support body with the adapter ring. The adapter ring can nevertheless be realized in a simple manner in terms of form, particularly if it is made of plastic, as is preferred.

In contrast to axially acting hydraulic bearings of the prior art, it is not necessary to act on the bearing housing using the sealing techniques mentioned at the outset, such as flanging, rolling or riveting, in the proposed bearing to seal it against the escape of damping agent. The liquid-tight ver Rather, the conclusion is made in the course of the assembly process, which will be explained later and is made possible by the special design of the elastomer bearing, for introducing the hydraulic unit into the bearing housing.

With regard to a structurally simple design, the adapter ring provided in the proposed elastomer bearing is preferably designed as a one-piece component of one of the two channel disks. An embodiment of the elastomer bearing in which the adapter ring is designed as a component of the upper channel disk appears to be particularly advantageous for practical implementation. In this embodiment, the elastomeric bellows, which delimits the lower chamber, ie the compensation chamber, on the side opposite the channel support element, is held in a press fit between the two channel disks of the channel support element.

In order to achieve a particularly long service life, also with regard to the liquid-tight sealing of the bearing, the radially outer area of the elastomeric support body, which is held in the adapter ring or pushed into it, is preferably made of plastic or metal. The area in question, consisting of plastic or metal, is connected to the elastomer forming the actual support body by vulcanization. As already explained, this area of the supporting body is held in the adapter ring at least by a non-positive connection after the assembly is complete. The frictional connection results from the fact that the area in question presses the adapter ring surrounding it radially outwards against the inner surface of the bearing housing after the assembly process has been completed.

In addition, there can advantageously be a positive fit between the adapter ring and the radially outer area of the supporting body that it accommodates due to an overlap. In this case, the supporting body has an outer diameter within its radially outer region held by the adapter ring, which is larger than the inner diameter of the adapter ring. The form-fitting connection between the named bearing components can also be supported by profiling (grooves or the like) on their abutting surfaces.

With regard to a generally required low weight, both the channel support element and the bearing housing are preferably made of a plastic. In particular, a design of the channel support element made of plastic has been customary for a long time. Against the background of the already mentioned advantageous possibility of including bearings of the proposed type in a modular system, however, other material combinations with regard to the channel support element and the bearing housing are of course also possible. Accordingly, the bearing housing in particular can also consist of die-cast aluminum or steel. In this case, the interior of the bearing housing preferably tapers in relation to the mounting direction of the hydraulic unit or the adapter ring, ie preferably from bottom to top, in the case of introduction of the hydraulic unit from below.

In one embodiment that is considered to be practical and that in particular enables simple assembly of the bearing, its bearing housing has a projection with an angular cross-section that extends in the circumferential direction at least in sections on the inner surface of the bearing housing. With respect to the axial direction, this is formed at the level of the channel support element of the hydraulic unit to be fixed in the bearing housing. After the hydraulic unit has been installed in the bearing housing, the projection formed therein is gripped from behind on both sides with respect to the axial direction by a radially outwardly directed collar of the adapter ring.

A development of the elastomer bearing that is certainly advantageous for a large number of applications is given by the fact that the channel disks are perforated in a radially central area. In this case, a membrane is arranged in this area between the channel disks, through which an additional resilience reducing the rigidity is realized, in particular in the case of high-frequency vibratory loads acting in the direction of the bearing axis.

An exemplary embodiment of the invention will be explained below with reference to drawings.

• 1: den Adapterring einer möglichen Ausbildungsform des vorgeschlagenen Elastomerlagers,
• 2: die untere Kanalscheibe eines mit dem Adapterring gemäß der 1 ausgestatteten Elastomerlagers,
• 3: das Kanalträgerelement nach dem Zusammenfügen des Adapterrings gemäß 1 und der unteren Kanalscheibe gemäß 2,
• 4: das mit dem Kanalträgerelement gemäß 3 zu versehende Elastomerlager nach dem Einfügen des Tragkörpers in das Lagerghäuse,
• 5: das Elastomerlager nach dem Abschluss der Montage der hydraulischen Einheit.

The accompanying drawings show in detail:

• 1 : the adapter ring of a possible embodiment of the proposed elastomer bearing,
• 2 : the lower channel disk one with the adapter ring according to the 1 equipped elastomer bearing,
• 3 : according to the channel support element after assembling the adapter ring 1 and according to the lower channel disk 2 ,
• 4 : that according to the channel support element 3 elastomer bearing to be provided after inserting the support body into the bearing housing,
• 5 : the elastomeric bearing after completing the assembly of the hydraulic unit.

the 1 shows the adapter ring 10 of a possible embodiment of the proposed elastomeric bearing in a three-dimensional view, the adapter ring 10 being formed in one piece with the upper channel disk 8 in the example shown. A liquid inlet opening 21 can be seen in the upper channel disk 8, via which a fluid damping agent can flow out of the upper chamber 3 (see Fig 5 ), that is, from the working chamber, into the in the 3 shown channel 6 of the channel support element 5 can occur. When the bearing deflects, the fluid damping medium passes from the upper chamber 3 into the channel 6 and via this into the lower chamber 4, ie into the compensation chamber.

the 2 shows the lower channel disk 9 to be assembled with the upper channel disk 8 and the adapter ring 10 to form the channel support element 5. This has a fluid outlet opening 22 through which the fluid from the working chamber (upper chamber 3) into the compensation chamber (lower chamber 4) displaced fluid damping agent can pass from the channel 6 into the compensation chamber. In the example shown, a membrane 16 is placed on the lower channel disk 9, which is arranged between the upper channel disk 8 and the lower channel disk 9 after they have been joined together and provides additional flexibility for the bearing. For this purpose, both channel disks 8, 9 have several openings in a radially central area, through which the damping agent can act on the aforementioned membrane 16 from the direction of the upper chamber 3 during compression of the bearing and from the direction of the lower chamber 4 during rebound.

the 3 shows the channel support element 5 after the assembly of the upper channel disk 8 with the adapter ring 10 according to FIG 1 and the lower channel disk 9 according to the 2 in a spatial and sectional representation. In the channel support element 5 shown, the elastomeric bellows 7 is already arranged for the lower boundary of the compensation chamber. This is held between the upper channel disc 8 and the lower channel disc 9 in a clamped fit. The representation also shows the channel 6 formed after the two channel disks 8, 9 have been joined together.

the 4 shows the proposed elastomeric bearing during the assembly process, the elastomeric support body 2 having already been inserted into the bearing housing 1 as part of the hydraulic unit. The supporting body 2 has been introduced into the bearing housing 1 in the axial direction 18, more precisely from below. The radially outer area 11 of the supporting body 2 consists of a plastic vulcanized onto the elastomer forming the remaining areas of the supporting body 2 . When assembling the bearing, the supporting body 2, as in FIG 4 shown, first pushed over the peripheral surface of the bearing housing 1 projection 14 also in the axial direction 18 upwards. It is brought into this position by means of a plunger 23 and then held by means of a radial holder (not shown here). Then the assembled from the lower channel disc 9 and the upper channel disc 8, in which 3 Channel support element 5 shown is also inserted into the bearing housing 1 from below in the axial direction 18 . The adapter ring 10 of the upper channel disk 8 is pushed upwards in the axial direction 18 beyond the projection 14 formed on the inside of the bearing housing 1 and finally snaps with a collar 15 formed at its axially upper end, running around the circumference and directed radially outwards , the projection 14 engaging behind a. A collar 15 ′ formed at the axially lower end of the adapter ring 10 , also running around the circumference and extending outwards in the radial direction 20 , comes to a stop on the axially lower side of the projection 14 .

The elastomeric support body 2 can now, as in the 5 recognizable, be brought into the end position. For this purpose, it is relaxed by removing the aforementioned radial holder and pressed into the adapter ring 10 from above in the axial direction 18 . As a result, there is at least a non-positive connection between the adapter ring 10 of the upper channel disk 8 and the radially outer region 11 of the supporting body 2 introduced into the adapter ring 10, since the relaxed supporting body 2 pushes the adapter ring 10 outwards in the radial direction 20 against the inner surface of the bearing housing 1 presses. The non-positive connection is also supported by a positive connection, which is given by the fact that the outer region 11 has an outer diameter 12 that is larger than the inner diameter 13 of the adapter ring 10 after the support body 2 has been relieved. The upper chamber 3 (working chamber), which is formed below the supporting body 2 and can be filled with a fluid, is thus reliably sealed against the escape of the fluid damping agent. If necessary, the positive connection between the adapter ring 10 and the area 11 of the supporting body 2 accommodated by it can also be achieved by a suitable profiling, for example with grooves, of the surface areas that come into contact with one another surface of the support body 2 and the adapter ring 10 are reinforced. The lower chamber 4 (compensation chamber) is sealed by the elastomeric bellows 7 held in a press fit between the upper channel disk 8 and the lower channel disk 9 . The reliability of the seal is supported by the bearing housing 1, which tapers conically upwards axially in its interior space and arches over the upper chamber 3 or working chamber in the manner of a dome. When the channel support element 5 is pushed into its end position, this presses from the radial direction 20 onto the adapter ring 10 and via this indirectly onto the elastomeric bellows 7, so that the lower chamber 4 functioning as an equalizing chamber is also reliably sealed. It is not necessary to overpress the lower seal, for example to secure a clip. Rather, the assembly and operating state of the fuse are geometrically identical.

As can be seen from the drawings and the above explanations, the bearing is therefore sealed without any sealing or deformation techniques acting on the bearing housing 1 , solely due to the special design of the hydraulic unit and the corresponding inner surface of the bearing housing 1 . The hydraulic unit is held and sealed with very low degrees of deformation of the plastic parts used. Cracks and local overstressing are therefore excluded. The hydraulic unit is also sealed at two points, and the sealing functions can be optimized independently of one another. In addition, the sealing force of the upper seal acts mainly in the axial direction, while the lower seal is primarily subjected to radial force. The attachment of the supporting body 2 in the bearing housing 1 is a non-detachable connection. The outer area 11 of the supporting body 2 blocks the adapter ring 10 against radial movements.

Reference List

1

bearing housing

2

body

3

chamber

4

chamber

5

channel support element

6

channel

7

bellows

8th

channel disc

9

channel disc

10

adapter ring

11

outer area

12

outer diameter

13

inner diameter

14

head Start

15, 15'

collar

16

membrane

17

bearing axis

18

axis direction

19

circumferential direction

20

radial direction

21

liquid inlet opening

22

liquid outlet opening

23

pressure stamp

Claims (8)

Elastomeric bearing with a one-piece bearing housing (1) through which a hydraulic unit is accommodated, the hydraulic unit fixed in the bearing housing (1) consisting of an elastomeric support body (2), an elastomeric bellows (7), at least two in the direction of the bearing axis (17) chambers (3, 4) arranged one below the other and which can be filled with a fluid damping agent and a channel support element (5) spatially separating the chambers (3, 4) from one another and having at least one channel formed therein and connecting the chambers (3, 4) to one another in a flow-conducting manner (6), the hydraulic unit being mountable in the axial direction (18) in the bearing housing (1) and being mounted between the bearing housing (1) and a part of an upper channel disk (8) or a lower channel disk (9) of the channel support element (5) formed adapter ring (10) resulting form fit in the bearing housing (1) can be fixed, wherein the upper chamber (3) by a en the radially outer area (11) of the supporting body (2) held in the adapter ring (10) in a force fit or in a force and form fit and the lower chamber (4) by the clamping seat on the lower channel disc (9) or bellows (7) held between the channel washers (8, 9) is sealed against the escape of damping agent, characterized in that the bearing housing (1) has a circumferential direction (19) extending at least in sections on its inner surface, with respect to the axial direction (18) at the height of the channel support element (5) of the hydraulic unit fixed in the bearing housing (1) formed projection (14), which in the axial direction (18) on both sides by a radially outwardly directed collar (15, 15 ') of the adapter ring (10) is attacked. elastomer bearings claim 1 , characterized in that the adapter ring (10) is designed as an integral part of one of the two channel disks (8, 9). elastomer bearings claim 1 or 2 , characterized in that the adapter ring (10) is designed as a component of the upper channel disc (8), the elastomeric bellows (7) being clamped between the two channel discs (8, 9) of the prefabricated element during assembly of the hydraulic unit in the bearing housing (1) inserted channel support element (5) is held. Elastomer bearing according to one of Claims 1 until 3 , characterized in that the radially outer area (11) of the elastomeric support body (2) held in the adapter ring (10) consists of a plastic or metal bonded to the elastomer by vulcanization. Elastomer bearing according to one of Claims 1 until 4 , characterized in that between the adapter ring (10) and the radially outer region (11) of the supporting body (2) held by it due to an overlap existing between them, in which the supporting body (2) is held within the space held by the adapter ring (10). radially outer area (11) has an outer diameter (12) which is larger than the inner diameter (13) of the adapter ring, there is a form fit. Elastomer bearing according to one of Claims 1 until 5 , characterized in that between the in the adapter ring (10) held radially outer region (11) of the support body (2) and the adapter ring (10) there is a form fit due to a profiling of their abutting surfaces. Elastomer bearing according to one of Claims 1 until 6 , characterized in that the channel support element (5) with the channel discs (8, 9) and the adapter ring (10) or the bearing housing (1) and the channel support element (5) consist of a plastic. Elastomer bearing according to one of Claims 1 until 7 , characterized in that the channel discs (8, 9) are perforated in a radially central area and in this area a membrane (16) is arranged between the channel discs (8, 9).

Images