Hydraulic damping unit support device

Abstract

The cam is an axially parallel arrangement of the two bosses, the cam being arranged in a circle which is adapted to move the cam in a direction of rotation from one end of the shaft to the other end of the shaft, the cam being arranged in a circle which is adapted to move the cam in a direction of rotation from one end of the shaft to the other end of the shaft.

Description

Technical Field

[0001] The present invention relates to a hydraulically damped unit support device, which has two chambers axially opposite to each other, the two chambers are filled with fluid and are hydraulically connected to each other through at least one channel, the first chamber of the two chambers constitutes a working chamber surrounded by a supporting spring body, and the second chamber constitutes a compensating chamber surrounded by a bellows, the compensating chamber has an inner wall surrounding an internal space and extending axially, and the hydraulically damped unit support device also has an annular body axially arranged between the working chamber and the compensating chamber, the annular body surrounds an axial through hole leading to the working chamber, the through hole is closed by a diaphragm constructed integrally with the inner wall of the bellows, the diaphragm has a central area defined by the inner wall, and the central area and the inner wall together define the boundary of the internal space. Background Art

[0002] Document DE 10 2016 120 959 A1 discloses a hydraulically damped bearing device for supporting a motor vehicle unit, in particular for supporting a motor vehicle engine on a motor vehicle body, the bearing device having a bearing spring and a compensation chamber, the bearing spring supporting a bearing core and surrounding a working chamber, the compensation chamber being separated from the working chamber by a partition and bounded by a compensation diaphragm. The compensation chamber and the working chamber are filled with a fluid and are connected to each other via a damping channel introduced into the partition, wherein the partition has a diaphragm, which is accommodated in a vibrating manner and is provided with a foam element, which supports the diaphragm in the event of deflection. The disadvantage of this bearing device is that additional components, such as a foam element and a support for the foam element, are required to achieve the desired dynamic stiffness. This not only increases the number of components and thus the costs for producing these components, but also increases the number of assembly steps. Summary of the invention

[0003] Based on this, the technical problem to be solved by the present invention is to achieve a desired rigidity for a hydraulically damped unit support with as few additional components as possible.

[0004] This object is achieved according to the invention by a hydraulically damped assembly support.

[0005] The aforementioned hydraulically damped unit support device has two chambers axially opposite to each other, the two chambers are filled with fluid and are hydraulically connected to each other through at least one channel, the first chamber of the two chambers constitutes a working chamber surrounded by a supporting spring body, and the second chamber constitutes a compensating chamber surrounded by a bellows, the compensating chamber has an inner wall surrounding the internal space and extending in the axial direction, and the hydraulically damped unit support device also has an annular body arranged axially between the working chamber and the compensating chamber, the annular body surrounds an axial through hole leading into the working chamber, the through hole is closed by a diaphragm constructed integrally with the inner wall of the bellows, the diaphragm has a central area defined and / or bounded by the inner wall, the central area and the inner wall together define the boundary of the internal space, according to the present invention, in particular, the diaphragm has a flange area surrounding the central area and constructed integrally with the central area, the flange area is fixedly connected to the annular body and / or the supporting spring body on its outer circumference.

[0006] The preferred dynamic and / or static stiffness characteristics of the hydraulically damped assembly support can be influenced by the flange area, in particular in combination with the integral design of the diaphragm and the inner wall and / or the bellows. For example, a self-regulating function can be realized, which is usually only possible by using active devices that influence the vibration characteristics of the diaphragm. However, it is also preferred that the hydraulically damped assembly support according to the invention can also be provided with active devices that influence the vibration characteristics of the diaphragm, for example, an actuator or a switching device is provided, which is arranged, for example, in the interior space.

[0007] The hydraulically damped unit support device is preferably provided with an axial center axis. The interior space is preferably provided with an axial center axis. The axial center axis of the interior space preferably coincides with the axial center axis of the hydraulically damped unit support device. The axial center axis of the interior space and / or the axial center axis of the hydraulically damped unit support device are therefore preferably also referred to as center axis. One or each direction extending transversely to the axial direction and / or center axis is referred to as radial direction in particular.

[0008] The diaphragm is preferably elastic and / or flexible. The central region is preferably elastic and / or flexible. The flange region is advantageously elastic and / or flexible. The diaphragm is particularly integrally formed with the bellows. The inner wall is preferably elastic and / or flexible. The bellows is advantageously elastic and / or flexible.

[0009] According to one embodiment, the inner wall preferably has one or at least one bulge along the axis, which advantageously extends around the axial center axis of the interior space. The at least one bulge preferably constitutes at least one radial bulge and / or is formed by at least one, in particular local, enlargement of the diameter of the interior space. The inner wall preferably curves in the region of the at least one bulge, in particular radially, into the compensation chamber and / or out of the interior space.

[0010] According to an extended design, the inner wall preferably has one or at least one recessed portion, which is particularly preferably axially connected to the protrusion and advantageously extends around the axial center axis. By means of the at least one recessed portion, for example, by means of its positioning and / or geometric design, the preferred dynamic and / or static stiffness characteristics of the hydraulically damped unit support device can be particularly additionally influenced. The at least one recessed portion preferably constitutes at least one radial recessed portion and / or is formed by at least one, particularly local, reduction in the diameter of the inner space. The inner wall is preferably arched in the region of the at least one recessed portion, particularly radially, into the inner space and / or arched out of the compensation chamber. The at least one protrusion and the at least one recessed portion are arched in opposite directions to each other, particularly radially. The at least one recessed portion, for example, constitutes at least one waist and / or a constriction. The at least one protrusion and the at least one recessed portion preferably blend into each other, particularly axially. The inner wall preferably extends in a wavy manner in the axial direction.

[0011] According to a design, the flange area is particularly connected to the central area radially and / or directly. The flange area preferably extends in particular radially beyond the inner wall and / or the connecting area, in which the inner wall is connected to the central area and / or to the diaphragm. Preferably, the inner wall acts on the diaphragm at the transition between the central area and the flange area and / or in the connecting area, especially on the side of the diaphragm that faces away from the working chamber and / or the annular body and / or the through hole. Advantageously, the flange area surrounds the central axis. For example, the bellows has the flange area. The flange area is particularly integrally constructed with the bellows. The diaphragm is preferably fixedly connected to the annular body and / or the support spring body on its periphery. The periphery of the flange area preferably constitutes the periphery of the diaphragm. Advantageously, the flange area and / or the diaphragm are exclusively or only fixedly connected to the annular body and / or the support spring body on its periphery. Preferably, the diaphragm is fixedly connected to the annular body and / or the supporting spring body, in particular exclusively or only in such a way that the flange area is fixedly connected to the annular body and / or the supporting spring body on its periphery. Preferably, the diaphragm and / or the flange area are fixed or retained on the annular body and / or the supporting spring body, in particular exclusively or only on its periphery or by its periphery. Advantageously, the diaphragm is fixedly connected to the annular body and / or the supporting spring body and / or is fixed or retained on the annular body and / or the supporting spring body, in particular exclusively or only in such a way that the flange area is fixed or retained on the annular body and / or the supporting spring body on its periphery. Preferably, the flange area is fixed or retained on the annular body and / or the supporting spring body, preferably radially spaced from the central area. Preferably, the central area is fused into the flange area, preferably materially joined, in particular radially. The flange area advantageously widens the central area, in particular radially. Preferably, the central area and the flange area together constitute the diaphragm. The central region preferably constitutes a particularly radially inner or central part of the diaphragm. The diaphragm is preferably constructed in one piece with the bellows. In particular, the central region and / or the flange region and / or the diaphragm are preferably radially spaced from the outer periphery of the flange region or the diaphragm and / or can vibrate and / or move and / or elastically move relative to the annular body and / or the supporting spring body in the axial direction. Advantageously, the flange region is connected and / or fixed or retained on the annular body and / or the supporting spring body on its outer periphery with the annular body and / or the supporting spring body, so that the central region and / or the flange region and / or the diaphragm are preferably radially spaced from the outer periphery of the flange region or the diaphragm and / or can vibrate and / or move and / or elastically move relative to the annular body and / or the supporting spring body in the axial direction. For example, the central region and / or the diaphragm are arranged in the through hole. The central region and / or the flange region and / or the diaphragm are preferably arranged on the side of the through hole facing away from the working chamber. The central area and / or the flange area and / or the diaphragm are preferably designed in a disc shape. For example, the flange area is designed in an annular or annular disc shape. In particular, the central area and / or the flange area and / or the diaphragm preferably have a circular outer peripheral contour respectively. The flange area advantageously has a circular inner peripheral contour.Preferably, the central region and / or the flange region and / or the diaphragm are preferably radially spaced from the outer periphery of the flange region and / or the diaphragm and are axially supported or can be axially supported on the annular body on the side thereof facing the working chamber. Advantageously, the central region and / or the flange region and / or the diaphragm are preferably radially spaced from the outer periphery of the flange region and / or the diaphragm and are not axially supported or cannot be axially supported on the annular body on the side thereof facing away from the working chamber. In particular, the central region and / or the flange region and / or the diaphragm are preferably radially spaced from the outer periphery of the flange region and / or the diaphragm and are advantageously axially movable away from the annular body and / or movable and / or vibrating relative to the annular body on the side of the annular body facing away from the working chamber. Advantageously, the diaphragm and / or the flange region and / or the central region are particularly therefore preferably radially spaced from the outer periphery of the flange region and / or the diaphragm and are advantageously axially capable of being lifted from the annular body.

[0012] Preferably, the two chambers are spaced apart from one another by an annular body and / or by a central region and / or by a flange region and / or by a membrane.

[0013] According to an extended design, the inner wall is rotationally symmetrical with respect to the central axis. The interior space is preferably rotationally symmetrical with respect to the central axis. In particular, the support spring body and / or the working chamber and / or the central area and / or the flange area and / or the diaphragm and / or the bellows and / or the compensation chamber and / or the annular body and / or the through-hole are preferably rotationally symmetrical with respect to the central axis. The channel advantageously extends at least partially or completely or at least once or several times around the central axis.

[0014] According to a design, the diaphragm preferably has at least one reinforcing element in the central region that increases the stiffness of the diaphragm, for example, arranged on the side of the diaphragm and / or the central region facing the interior space and / or arranged in the interior space. Preferably, the diaphragm preferably has a plurality of reinforcing elements in the central region that increase the stiffness of the diaphragm, which are preferably arranged on the side of the diaphragm and / or the central region facing the interior space and / or in the interior space. The preferred dynamic and / or static stiffness characteristics of the hydraulically damped unit support device can be particularly additionally influenced by one or more reinforcing elements, for example, by the positioning and / or geometric design of one or more or each reinforcing element. One or each reinforcing element is connected to the bellows and / or the central region and / or the diaphragm, for example, fixedly and / or materially joined, and / or is constructed integrally with the bellows and / or the central region and / or the diaphragm. Preferably, one or each reinforcing element is arranged in particular radially spaced from the central axis. Preferably, one or each reinforcing element extends axially. For example, one or each reinforcing element extends in particular from the diaphragm away from the diaphragm. Advantageously, one or each reinforcing element is, in particular, at least partially arched toward the inner wall. Thus, for example, sharp edges can be avoided, which could damage the inner wall if the inner wall contacts the reinforcing element. Preferably, one or each reinforcing element extends from the central area and / or the membrane, in particular axially, into the interior space. The reinforcing elements are, for example, arranged around the central axis, in particular spaced apart from one another. Preferably, one or each reinforcing element consists of the material of the membrane and / or the central area and / or the bellows. For example, one or each reinforcing element consists of an elastomer. One or each reinforcing element is advantageously designed in the form of a rib and is, for example, also referred to as a reinforcing rib.

[0015] Preferably, the diaphragm preferably has at least one further mass element in the central region, which is arranged, for example, on the side of the diaphragm and / or the central region facing the interior and / or in the interior. Via the further mass element, for example, the vibration characteristics of the diaphragm can be influenced.

[0016] According to an extended design, the interior space is open to the surroundings, in particular on its side facing away from the central area and / or the diaphragm. Therefore, preferably, the central area and / or the part of the diaphragm forming the central area, in particular on its side facing the interior space, is at atmospheric pressure. Thus, for example, a lower dynamic stiffness and / or a higher fatigue strength of the hydraulically damped unit support device can be achieved. According to an alternative, the interior space is, for example, closed, in particular to the surroundings. For example, the interior space is a closed space. The interior space, for example, has a pressure different from the surroundings. For example, a fluid is introduced into the interior space.

[0017] The interior space is connected to the environment, for example, via a nozzle. For example, when the membrane moves slowly or at a low frequency, the nozzle allows air exchange between the interior space and the surrounding environment. For example, when the membrane moves quickly or at a high frequency, the air exchange between the interior space and the surrounding environment is blocked by the nozzle. The interior space is preferably free space.

[0018] According to a design, the annular body has two or at least two annular body parts arranged axially one above the other, in particular annular. The flange area and / or the diaphragm are preferably fixed and / or held and / or clamped between the two annular body parts on the periphery of the flange area or the periphery of the diaphragm. Therefore, the flange area and / or the diaphragm can be fixed and / or held on the annular body in a simple manner. The annular body and / or each annular body part are in particular a shape-stable main body. For example, the annular body and / or each annular body part are made of plastic. Alternatively, the annular body is, for example, constructed in one piece.

[0019] According to an extended design, the annular body has a preferably circular or elliptical opening and / or hole and / or recess on the side facing away from the working chamber, the through-hole particularly preferably opens into the opening and / or hole and / or recess centrally or radially centrally, the through-hole particularly having a smaller diameter and / or smaller size than the opening and / or hole and / or recess, the diaphragm and / or flange area preferably being embedded in the opening and / or hole and / or recess together with the central area. It is therefore preferred that the diaphragm and / or flange area and / or central area can be lifted off the annular body particularly preferably in the axial direction. By lifting the diaphragm and / or flange area and / or central area off the annular body, for example, the inner wall and / or the bulge and / or the recess can be deformed particularly elastically and thus the preferred dynamic and / or static stiffness characteristics of the hydraulically damped unit support device can be influenced in particular in addition. Preferably, the in particular circular opening and / or hole and / or recess is arranged or at least arranged in the annular body part of the plurality of annular body parts which faces away from the working space.

[0020] According to one design, the channel is arranged in the annular body. The channel preferably surrounds the through hole at least partially or completely or at least once or multiple times. The channel is preferably enclosed between the annular body parts. Advantageously, the channel has at least one opening toward the working chamber and the compensation chamber. For example, the channel is also called a damping channel. The channel is preferably bounded by the annular body part. The channel is bounded and / or sealed radially inwardly by at least one of the multiple annular body parts or by the diaphragm.

[0021] According to an extended design, the support spring body has an elastic support spring and two, preferably shape-stable connecting pieces, which are fixedly and / or materially connected to the support spring, and the support spring extends in particular in the axial direction between the two connecting pieces. Preferably, the first of the two connecting pieces is arranged in particular radially and centrally on the support spring of the elastomeric body and / or on the end of the support spring that faces away from the compensation chamber and / or the annular body. For example, the first connecting piece is also referred to as a support core. The second of the two connecting pieces is preferably arranged on the outer periphery of the support spring and / or on the end of the support spring that faces the compensation chamber and / or the annular body. In particular, the second connecting piece is designed to be annular. For example, the second connecting piece is composed of an annular body. But preferably, the second connecting piece is a separate component. These connecting pieces are preferably arranged axially offset from each other. For example, the flange area is fixedly connected to one of these connecting pieces and / or to the second connecting piece on its outer periphery.

[0022] According to one embodiment, the hydraulically damped unit support device comprises a housing, in which the support spring body and / or the annular body are particularly arranged. For example, the second connecting member is formed by the housing. Preferably, the second connecting member and / or the annular body are particularly at least indirectly fixed to the housing.

[0023] The working chamber is preferably bounded by a bearing spring body. Preferably, the working chamber is, in particular, additionally bounded by an annular body and / or a diaphragm.

[0024] The compensating chamber is preferably bounded by a bellows. Preferably, the compensating chamber is in particular additionally bounded by an annular body and / or by a diaphragm and / or by a flange region. The compensating chamber is advantageously annular.

[0025] The bellows preferably has an outer wall and an in particular annular bottom, which is preferably arranged on the side of the bellows facing away from the working chamber and / or the annular body. The outer wall advantageously surrounds the inner wall. The bottom preferably connects the inner wall to the outer wall. The compensating chamber is preferably enclosed between the outer wall and the inner wall. Preferably, the compensating chamber is in particular additionally bounded by the inner wall and / or by the outside and / or by the bottom. Preferably, the compensating chamber is in particular additionally bounded by the annular body and / or by the diaphragm and / or by the central area and / or by the flange area.

[0026] The bellows is preferably covered by a bellows, for example on the side facing away from the compensation chamber and / or the annular body. Preferably, the bellows is axially supported or can be axially supported on the bellows, for example by its bottom, for example on the side facing away from the compensation chamber and / or the annular body. Preferably, the bottom is preferably movable axially relative to the bellows. In particular, the bottom and / or the inner wall and / or the bellows are not fixed to the bellows. Alternatively, the bottom and / or the inner wall and / or the bellows are, for example, fixed to the bellows. The bellows is, for example, particularly directly or at least indirectly fixed to the annular body and / or to the second connecting member and / or to the housing. Preferably, the annular body is, in particular, arranged axially and / or fixed between the second connecting member and the bellows. Preferably, the bellows is fixed or can be fixed to the second connecting member, for example, in a form-fitting manner and / or by a snap-on connection. The snap-on connection is, for example, used as an assembly aid. In particular, the outer wall of the bellows is fixed and / or clamped between the bellows and the annular body via the end facing the working chamber and / or the annular body. The bellows preferably has at least one or more through holes. Thus, for example, when the volume of the bellows changes due to a fluid flowing into or out of it, a pressure balance between the interior of the bellows and the surrounding environment is possible. In addition, it can be ensured that the interior space is at atmospheric pressure.

[0027] The inner wall is preferably connected to the diaphragm and / or the central area and / or the flange area and / or the bellows in a fixed and / or materially bonded manner. Preferably, the inner wall is arranged on the side of the diaphragm and / or the central area and / or the flange area that faces away from the through-hole and / or the working chamber. Advantageously, the inner wall is fused into the central area and / or the flange area and / or the diaphragm, especially on the side of the diaphragm and / or the central area and / or the flange area that faces away from the through-hole and / or the annular body and / or the working chamber, preferably at the periphery of the central area and / or at the inner periphery of the flange area. For example, the inner wall is fused into the diaphragm and / or the central area and / or the flange area, especially on the side of the diaphragm and / or the central area and / or the flange area that faces away from the through-hole and / or the annular body and / or the working chamber, at the transition between the central area and the flange area. The membrane and / or the central region and / or the inner wall and / or the flange region and / or the outer wall and / or the bottom and / or one or more reinforcing elements are in particular formed in one piece with the bellows and / or from the same material. The bellows can thus be manufactured together with the membrane and / or the central region and / or the inner wall and / or the flange region and / or the outer wall and / or the bottom and / or one or more reinforcing elements in one manufacturing step. The bellows and / or the membrane and / or the central region and / or the inner wall and / or the flange region and / or the outer wall and / or the bottom and / or one or more reinforcing elements are preferably formed from an elastomer.

[0028] The hydraulically damped unit mounting device is provided in particular for a vehicle, which is preferably a motor vehicle. The hydraulically damped unit mounting device is preferably used to support and / or fix a vehicle engine or a vehicle transmission on a vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is described below with reference to the accompanying drawings using preferred embodiments. In the accompanying drawings:

[0030] Figure 1 A perspective view showing a hydraulically damped unit support device according to an embodiment;

[0031] Figure 2 Show according to Figure 1 A top view of a hydraulically damped unit support device;

[0032] Figure 3 Shown along Figure 2 A longitudinal section view obtained by cutting the hydraulically damped unit support device along the cutting line AA;

[0033] Figure 4 Shown along Figure 3 Different longitudinal sections obtained by cutting the hydraulically damped unit support device along the cutting line BB in FIG.

[0034] Figure 5 Show according to Figure 1 Bottom view of the hydraulically damped unit support device. DETAILED DESCRIPTION

[0035] from Figures 1 to 5 Different views of a hydraulically damped unit support 1 according to one embodiment are shown, which has a center axis 2 extending in the axial direction x. The hydraulically damped unit support 1 has a central mounting element 3 and a housing 4, which is closed at the end on the side facing away from the central mounting element 3 by a bellows 5, in which a plurality of holes 30 are provided. In addition, a further mounting element 6 is provided on the housing 4. A cover 7 is also fixed to the central mounting element 3, which surrounds the central mounting element.

[0036] The support spring body 8 is arranged in the housing 4, and the support spring body has an elastic support spring 9 and two connecting parts 10 and 11 fixedly connected to the support spring, and the support spring 9 extends between the two connecting parts in the axial direction x. The central assembly element 3 is fixed to the first connecting part 10 of the two connecting parts, and the first connecting part particularly extends axially from the housing 4. According to a possible alternative, the first connecting part 10 is constructed integrally with the central assembly element 3, for example. The second connecting part 11 is radially against the inner peripheral wall of the housing 4 and axially against the radial inner shoulder 22 of the housing 4, so that the support spring body 8 is connected to the housing 4 via the second connecting part 11. An annular body 12 is arranged between the support spring body 8 and the bellows 5 in the axial direction x, and the annular body is composed of two annular annular body parts 13 and 14 arranged axially one above the other. The annular body 12 surrounds an axial through hole 15, which is closed by a diaphragm 16.

[0037] In particular, the bellows 5 is preferably fixed to the second connecting piece 11 in the preassembled state by means of a snap connection 23. Furthermore, the annular body 12 is fixed between the second connecting piece 11 and an edge 24 of the bellows 5 facing the annular body 12, which edge is in turn held on the housing 4.

[0038] A bellows 17 is provided on the side of the annular body 12 facing away from the supporting spring body 8, the bellows having an inner wall 19 surrounding the inner space 18, an outer wall 20 surrounding the inner wall, and a bottom 21 connecting the inner wall 19 to the outer wall 20, by means of which the bellows 17 is supported, in particular axially, on the bellows 5. The outer wall 20 is held between the annular body 12 and the bellows 5 by its end facing away from the bottom 21.

[0039] The support spring body 8 surrounds a working chamber 25, into which the through-hole 15 opens. In addition, the bellows 17 surrounds an annular compensation chamber 26, which is separated from the working chamber 25 by the annular body 12 and the diaphragm 16. The chambers 25 and 26 are filled with a fluid and are hydraulically connected to each other via a channel 27 extending in the annular body 12.

[0040] The diaphragm 16 comprises a central region 34 and a flange region 28 surrounding the central region and connected thereto, which is held on its outer circumference at the annular body 12 between the annular body parts 13 and 14. The diaphragm 16 and the inner wall 19 are formed integrally with one another. Furthermore, the central region 34 and the flange region 28 are formed integrally with one another and with the bellows 17, the inner wall 19 of which is connected to the diaphragm 16 via its end facing the diaphragm 16 at the transition between the central region 34 and the flange region 28. The central region 34 and the flange region 28 together form the diaphragm 16, which in particular forms a disk-shaped body.

[0041] On the side of the annular body facing away from the working chamber 25, the annular body 12 has a preferably circular recess 29, into which the through-hole 15 preferably opens centrally, the through-hole in particular having a smaller diameter than the recess 29, and into which the diaphragm 16 is embedded. The diaphragm 16 and the inner wall 19 together define the boundaries of the inner space 18, which is open to the surroundings on its side facing away from the diaphragm 16. The central axis 2 also constitutes the central axis of the inner space 18. The inner wall 19 has a ridge 31 extending around the central axis 2 and a recess 32 connected to the ridge and extending around the central axis 2 in the axial direction x. In addition, reinforcing elements 33 in the form of ribs are arranged in the inner space, which extend axially from the central region 24 of the diaphragm 16 into the inner space 18.

[0042] Reference numerals list

[0043] 1. Hydraulic damping unit support device

[0044] 2Central Axis

[0045] 3Central assembly components

[0046] 4 Shell

[0047] 5. Corrugated hood

[0048] 6 Additional assembly components

[0049] 7 Cover

[0050] 8Support spring body

[0051] 9 Support spring

[0052] 10 First connecting piece

[0053] 11 Second connecting piece

[0054] 12 Ring

[0055] 13 Ring body parts

[0056] 14 Ring body parts

[0057] 15Through holes

[0058] 16 Diaphragms

[0059] 17 Bellows

[0060] 18Interior Space

[0061] 19Inner wall of bellows

[0062] 20 Outer wall of the bellows

[0063] 21 Bottom of bellows

[0064] 22 Inner shoulder of the housing

[0065] 23 snap connection device

[0066] 24 The edge of the corrugated cover

[0067] 25 working chambers

[0068] 26 Compensation cavity

[0069] 27 channels

[0070] 28 Flange area of ​​diaphragm

[0071] 29 concavity

[0072] 30 Holes in the bellows

[0073] 31 ridge

[0074] 32 Depression

[0075] 33 Stop

[0076] 34 Central area of ​​the diaphragm

[0077] x-axis

Claims

1. A hydraulically damped unit support device, comprising two chambers which are opposite to each other in the axial direction (x), the two chambers are filled with a fluid and are hydraulically connected to each other via at least one channel (27), the first of the two chambers forming a working chamber (25) surrounded by a support spring body (8), and the second chamber forming a compensation chamber (26) surrounded by a bellows (17), the compensation chamber having an inner wall (19) which surrounds an inner space (18) and extends in the axial direction (x), and the hydraulically damped unit support device comprising: The bearing device also has an annular body (12) arranged between the working chamber (25) and the compensation chamber (26) in the axial direction (x), the annular body surrounding an axial through hole (15) leading into the working chamber (25), the through hole being closed by a diaphragm (16) constructed integrally with the inner wall (19) of the bellows (17), the diaphragm having a central area (34) defined by the inner wall (19), the central area and the inner wall (19) jointly defining the boundary of the inner space (18), wherein: The diaphragm (16) has a flange area (28) surrounding the central area (34) and constructed integrally with the central area, the flange area being fixedly connected to the annular body (12) and / or the supporting spring body (8) on its outer circumference, characterized in that the diaphragm (16) is designed in a disk shape and can be moved relative to the annular body (12) in the axial direction (x), wherein the central area (34) and the flange area (28) together constitute the diaphragm (16) and can be lifted off the annular body (12) in the axial direction (x), and by lifting the diaphragm (16) and / or the flange area (28) and / or the central area (34) from the annular body (12), the inner wall (19) can be elastically deformed and the dynamic and / or static stiffness characteristics of the hydraulically damped unit support device can thus be additionally influenced.

2. The hydraulically damped unit support device according to claim 1, characterized in that: The inner wall (19) has at least one bulge (31) extending about an axial center axis (2) of the interior space (18).

3. The hydraulically damped unit support device according to claim 2, characterized in that: The inner wall (19) has at least one depression (32) which is axially connected to the elevation (31) and extends around the center axis (2).

4. The hydraulically damped unit support device according to claim 1, characterized in that: The membrane (16) has at least one reinforcing element (33) which increases the rigidity of the membrane (16), the reinforcing element being arranged on the side of the membrane (16) facing the interior space (18).

5. The hydraulically damped unit support device according to claim 1, characterized in that: The interior space (18) is open to the surroundings on its side facing away from the membrane (16).

6. The hydraulically damped unit support device according to claim 1, characterized in that: The diaphragm (16) is capable of vibrating relative to the annular body (12) along an axial direction (x).

7. The hydraulically damped unit support device according to claim 1, characterized in that: The annular body (12) has two annular annular body parts (13, 14) which are arranged axially one above the other and between which the collar area (28) is held on its outer circumference.

8. The hydraulically damped unit support device according to claim 7, characterized in that: The annular body (12) has a recess (29) on the side facing away from the working chamber (25), into which the through-hole (15) opens.

9. The hydraulically damped unit support device according to claim 8, characterized in that: The recess (29) is arranged at least in the annular body part of the annular body parts (13, 14) facing away from the working chamber (25).

10. The hydraulically damped unit support device according to claim 1, characterized in that: The passage (27) is arranged in the annular body (12).

11. The hydraulically damped unit support device according to claim 1, characterized in that: The support spring body (8) has an elastic support spring (9) and two dimensionally stable connecting parts (10, 11) which are fixedly connected to the support spring and between which the support spring (9) extends in the axial direction (x).

12. The hydraulically damped unit support device according to claim 1, characterized in that: The central region (34) and the collar region (28) are arranged on a side of the through-opening (15) facing away from the working chamber (25).

13. The hydraulically damped unit support device according to claim 8, wherein: The collar region (28) engages with the central region (34) in the recess (29).

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