Elastic support with protective cover

Abstract

The invention relates to an elastic bearing with a protective cover, a central longitudinal axis (A) extending through the elastic bearing, in particular a hydraulic elastic bearing, comprising an inner sleeve (4), an outer sleeve (6) surrounding the inner sleeve (4), an elastic body (8) connecting the inner sleeve (4) to the outer sleeve (6) and at least one protective cover (10) arranged at one axial end of the elastic bearing (2), wherein the protective cover (10) is fixed immovably only at an inner peripheral side or at an outer peripheral side and has an elastic shield (12) extending radially (R).

Description

Elastic support with cover Technical Field

[0001] This invention relates to an elastic support (Elastomerlager). Background Technology

[0002] From practice, we know that an elastic support comprises an inner sleeve, an outer sleeve surrounding and enclosing the inner sleeve, and an elastomer. The elastomer connects the inner sleeve to the outer sleeve. To provide particular thermal protection for the elastomer, such an elastic support can now include a cap in each axial end region, as shown, for example, in DE102007028041B4.

[0003] DE102007028041B4 discloses a cover that is similarly fitted onto and positioned on both an inner and outer sleeve, thereby achieving an airtight seal for the elastomer. The cover is designed as a corrugated ring to compensate for radial adjustment displacement of the inner sleeve relative to the outer sleeve without separation. However, this cover can only be secured when the support has already been fixed to the connecting structure, for example, pressed into a receiving orifice. Therefore, this support cannot be pre-installed.

[0004] Practice has also revealed the existence of resilient supports with caps, where the caps are designed as sealing and / or protective sleeves with vulcanized rings. These reinforcing rings are used for fixation or sealing on the inner circumferential side of the inner sleeve and on the outer circumferential side of the outer sleeve, respectively, while maintaining a constant position. Thus, an airtight seal of the elastomer is achieved. Although the resilient support can be pre-assembled and mounted as an assembly on a connecting structure, a relatively large outer sleeve is required so that the sleeve can be compressed from the outside without exceeding the outer diameter of the outer sleeve radially.

[0005] In principle, a cover for a resilient support is a robust means of mitigating oxidation of the elastomer on its air-exposed surface. Oxidation is sometimes detrimental because it can lead to surface hardening and consequently, cracking of the associated surface. Furthermore, in known solutions, the installation of the cover is difficult or disadvantageous because it is fixed in a fixed position to both the inner and outer sleeves. Summary of the Invention

[0006] The objective of this invention is therefore to provide a resilient support with a cover that can be pre-installed and is implemented as inexpensively and durablely as possible, while also allowing for airflow protection and thermal protection, especially relative to airflow-facing and thermally protective elastomers.

[0007] Therefore, according to the present invention, an elastic support, particularly a hydraulic elastic support, through which a central longitudinal axis extends is provided, comprising an inner sleeve, an outer sleeve surrounding and enclosing the inner sleeve, an elastic body connecting the inner sleeve to the outer sleeve, and at least one cover disposed at one axial end of the elastic support, wherein the cover is fixed only in a fixed position on the inner circumferential side or in a fixed position on the outer circumferential side and has a radially extending elastic shielding portion.

[0008] Therefore, according to the present invention, an elastic support, particularly a hydraulic elastic support, through which the central longitudinal axis extends is also provided, comprising an inner sleeve, an outer sleeve surrounding and enclosing the inner sleeve, an elastic body connecting the inner sleeve to the outer sleeve, and at least one cover disposed at one axial end of the elastic support, wherein the cover is installed only on the inner and outer circumferential sides by means of floating supports and has radially extending elastic shielding portions.

[0009] This invention utilizes the unexpected insight that a cover can perform its full function for a specific purpose by simply blocking direct airflow, especially hot air, from the supporting environment to significantly reduce aging of the elastomer on its surface. It does not necessarily have to be airtight against the elastomer. Therefore, fixing the cover in a fixed position on both sides (radially inward and radially outward) can be abandoned. Thus, such a cover can be manufactured at low cost and easily pre-installed, while providing strong protection for the elastomer. The inventive concept is applicable to both covers fixed in a fixed position on one side and covers that are floated. The cover can be a heat-resistant cover and / or an airflow-blocking cover and / or in the form of a disc.

[0010] Therefore, in particular, the cover with a fixed radial position on one side is fixed only on one radial side, while the other radial side is not fixed in this way. On the radial side with a fixed position, the cover is fixed at its fixed location, i.e., for example, fixed to the inner sleeve or the outer sleeve. The cover with a floating mount on both sides is not fixed in a fixed position on either its radial side or its circumferential surface. According to the invention, it is irrelevant if air may pass through the cover on the circumferential side that is not fixed in a fixed position.

[0011] Therefore, a cover with a corrugated geometry can be abandoned because the cover of the present invention does not need to deflect radially under force, which locally increases the radial distance between the inner and outer sleeves. Instead, the cover can slide across the corresponding surfaces on its circumferential side, where it is not fixed in position, and avoid them during radial movement. If the distance between the inner and outer sleeves locally decreases under force, the cover can also slide, bend, or be slightly radially submerged in these corresponding areas.

[0012] The resilient support can be a hydraulic support. The cover can have an inner circumference and an outer circumference. The inner circumference, with its position unchanged, can be fixed to the inner sleeve. This forces the movement of the inner sleeve and the cover together, allowing for avoidance relative to the outer sleeve. The cover fixed to the inner circumference can, for example, be abutted against the ring segment, the outer sleeve, or the elastomer on the outer circumference with an axial preload, preferably a slight axial preload. The outer circumference, with its position unchanged, can be fixed to the outer sleeve. This forces the movement of the outer sleeve and the cover together, allowing for avoidance relative to the inner sleeve. The cover fixed to the outer circumference can, for example, be abutted against the elastomer on the inner circumference with an axial preload, preferably a slight axial preload. In the case of a cover with floating installation on both sides, the preload can only be applied, for example, during resilient support installation.

[0013] Another advantage of the cover being fixed radially in one position is that it is already protected from falling off in its pre-installed state.

[0014] Floating-mounted covers offer several advantages, including the fact that they do not even need to be fixed in position. While this results in the cover being movable relative to the inner and outer sleeves in its pre-installed state, it eliminates the need for additional fixing methods and potential structural fixing designs, saving costs without compromising the elastic support function in the installed state. Since the inner sleeve is typically threaded to the component in the installed state, and this threaded connection secures at least one cover to prevent axial slippage, it is sufficient that the cover only needs to remain in the threaded connection state to prevent it from falling off.

[0015] According to a conceivable improvement of the elastic support of the present invention, a cover can be provided at each axial end, wherein the two covers preferably have the same design. Thus, the elastomer can benefit from the covers of the present invention on both sides in the axial direction.

[0016] According to a conceivable improvement of the elastic support of the present invention, the corresponding cover can completely cover the elastomer on the end side. This design advantageously prevents the elastomer from being directly exposed to air from the surrounding environment of the support.

[0017] According to a conceivable improvement of the resilient support of the invention, the shield can be annular and / or disc-shaped. This design reduces the material and energy consumption for manufacturing the cover, especially compared to covers with corrugated geometries. Furthermore, such a cover requires very little axial structural space because it extends almost no axially. The corresponding resilient support can therefore have a short axial structure. Moreover, preload can be easily and preferably applied axially by means of this geometry.

[0018] According to a conceivable improvement of the elastic support of the invention, the shielding portion can be at least partially elastic. Preferably, the shielding portion can be fully elastic. Thus, the shielding portion can deform under stress and withstand preload.

[0019] According to an improved embodiment of the elastic support of the present invention, the shielding portion can be preloaded and abutted against the elastomer in the direction of the central longitudinal axis. Alternatively, the shielding portion can be preloaded and abutted against a segment of the cage of the elastomer in the direction of the central longitudinal axis. Preferably, the inner or outer peripheral edge of the shielding portion abuts against the elastomer or the segment in the direction of the central longitudinal axis under preload. In these cases, it is conceivable that the inner peripheral edge is arranged at a radial distance relative to the inner sleeve and / or the outer peripheral edge is arranged at a radial distance relative to the outer sleeve. Thus, the cover can clamp an air space with the elastomer and prevent air from flowing into the air space. Furthermore, the radial deflection of the inner sleeve and / or the outer sleeve under force does not necessarily cause the shielding portion to deform as well, at least not worth mentioning, which can prevent volume changes in the air space and the associated air exchange.

[0020] According to a conceivable improvement of the elastic support of the invention, the elastomer may include a cage having two axially spaced ring segments, wherein the shield or its inner or outer circumferential edge may abut the elastomer at the radial height of the adjacent ring segments. It is also conceivable that the shield or its inner or outer circumferential edge abuts the elastomer in a region, such as a contact region, having a radial extension dimension twice that of the adjacent ring segments, wherein preferably this region or contact region axially covers the adjacent ring segments. Since the cage or its ring segments can only be covered by a thin elastic strip, the annular contact surface on the elastomer and at the radial height of the cage remains geometrically stable even when the elastic support is radially deflected. In contrast, known diaphragms bulge inward and outward. Furthermore, tribological wear is not significant in the region of the elastomer, while frequent relative movement in the contact surface on the diaphragm may shorten the service life. The two axially spaced ring segments can be interconnected by a plurality of circumferentially spaced connecting strips. The cage may be vulcanized into the elastomer.

[0021] According to an improved embodiment of the elastic support of the present invention, the shielding portion can be abutted against an elastomer in the direction of the central longitudinal axis with a preload, wherein it can be axially adjacent to a ring segment. The ring segment can be vulcanized from the elastomer and is part of a cage. In this case, the shielding portion can abut against the elastomer covering the shielding portion. However, it is conceivable that the ring segment is not fully vulcanized, but at least not vulcanized in the axial direction or fixed at the end side. Thus, according to an improved embodiment of the elastic support of the present invention, the shielding portion can be abutted directly against the ring segment in the direction of the central longitudinal axis with a preload. It is also preferred that the contact area where the elastomer or ring segment and the shielding portion abut against each other can be formed radially at the height of the respective ring segment. The contact area is thus pushed back by the ring segment. The contact area can be formed on an elastic ring at the end side, the elastic ring being formed by the elastomer as a thin rubber sheet and covering the respective ring segment. The shielding portion has the advantage of covering the maximum possible area of ​​the elastomer or elastic membrane by means of the abutment of the preload acting axially and pushed back by the ring segment, while not contacting the elastic membrane itself under most load conditions. Tribological wear on the elastic membrane caused by this contact is thus minimized or even eliminated. Conversely, tribological wear caused by the shield contacting the elastomer occurs and concentrates in the region of the elastomer supported by the ring segment. The elastomer may only have a thin elastic skin in this region that has not been stretched due to the support movement, so its tribological wear is not dangerous. Therefore, it is conceivable that the shield does not contact the elastic membrane.

[0022] According to an improved embodiment of the resilient support of the invention, the cover can be mounted on the inner or outer sleeve by means of a floating support on its non-positionally fixed circumferential side and / or mounted on the inner or outer sleeve by means of a form-fit and / or force-fit support on its positionally fixed circumferential side. The floating mounting is simple and inexpensive and takes advantage of the invention. The form-fit and / or force-fit support can be a direct support on the inner or outer sleeve and is used for pre-installed protection. The cover is thus advantageously secured by means of a form-fit and / or force-fit so that the resilient support can be supplied to the customer in a pre-installed state. This securing is therefore particularly useful as a transport protection mechanism. As an alternative to the form-fit and / or force-fit, material bonding, such as adhesive bonding or vulcanization, is also conceivable.

[0023] According to an improved embodiment of the elastic support of the invention, the central orientation of the shielding portion preferably extends convexly, concavely, or obliquely about the transverse central plane of the elastic support, always and / or completely and / or continuously, in the pre-installed state. Alternatively or additionally, it is conceivable that one or both end faces of the shielding portion preferably extend convexly, concavely, or obliquely about the transverse central plane of the elastic support always and / or completely and / or continuously. The central orientation or end face orientation can have a parabolic arm-like orientation so that it can be pre-tightened in an advantageous manner. This orientation can exist in a stress-free or pre-tightened state. Advantageously, the shielding portion can be designed to be raised, i.e., its axial pre-tightening is adjustable similarly to that of a coil spring. This raised portion can be circumferentially over the entire range. The central orientation extends centrally between the end faces of the shielding portion (the end face facing the elastic body and the end face facing away from the elastic body).

[0024] According to an improved embodiment of the resilient support of the present invention, the cover may include a support sleeve that fixes or floats the cover in a fixed position on an inner or outer sleeve, wherein the support sleeve may be designed to be made of a different material from the shield. The support sleeve may be a rigid component, i.e., made of a material harder than the shield and / or ribs. Thus, the support sleeve serves for secure support. The support sleeve serves for secure attachment or fixation of the cover and allows for robot-supported pre-assembly. That is, a pre-assembly robot can easily grasp the cover at the support sleeve. The support sleeve may be a cylindrical sleeve. The shield may protrude radially from the support sleeve, wherein it is used for a compact configuration, especially when the cover is positioned in the radial gap between the inner and outer sleeves. The shield may be made of a more flexible material than the support sleeve, thereby accommodating the respective purposes of the shield and the support sleeve. The support sleeve may have an axial extension dimension corresponding to at most three times, preferably at most two times, and preferably at most one times the axial structural space requirement of the shield, to achieve an optimal balance between minimal leverage within the support sleeve and minimal structural space requirement.

[0025] According to a conceivable improvement of the elastic support of the present invention, the shielding portion can be vulcanized onto the support sleeve. It is conceivable that the support sleeve is non-elastic on its radial side for fixing or mounting. Therefore, the support sleeve can be moved into or onto the elastic support member during pre-assembly with minimal frictional resistance. Furthermore, it is conceivable that the radial distance between the support sleeve and the elastic support member into which the support sleeve is moved or onto is small. This avoids shaking and undesirable noise.

[0026] According to a conceivable improvement of the elastic support of the present invention, the cover may only have a support sleeve, a shield, and ribs. Less complex embodiments can be easily manufactured and require only a small structural space.

[0027] According to a conceivable improvement of the elastic support of the invention, the outer or inner periphery of the cover can be defined by a shielding portion, preferably by its free inner or outer peripheral edge. The shielding portion can therefore be fixed in position on its respective circumferential surface in any case.

[0028] According to an improved embodiment of the elastic support of the present invention, the cover can be designed as a single piece made of uniform material and including a cylindrical portion that secures or floats the cover on an inner or outer sleeve and / or the shielding portion and the cylindrical portion of the cover can be formed as a two-component injection molded part. The shielding portion can protrude radially from the cylindrical portion, where it is used for a compact configuration, especially when the cover is placed in the radial gap between the inner and outer sleeves. The shielding portion can be constructively designed to be more flexible than the cylindrical portion, thereby accommodating the respective purposes of the shielding portion and the cylindrical portion. Constructive measures may include, for example, the respective material thicknesses. The cylindrical portion can have an axial extension dimension equivalent to three times, preferably two times, preferably one times, the axial structural space requirement of the shielding portion, in order to achieve optimal compensation between the minimum leverage force within the cylindrical portion and the minimum structural space requirement. The one-piece cover is inexpensive and can be manufactured quickly in a single processing step. Furthermore, the rib can also be formed as a two-component injection molded part together with the shielding portion and the cylindrical portion. Two-component injection molding is inexpensive and allows for the rapid manufacture of caps in a single processing step while using work-optimized materials.

[0029] According to an improved embodiment of the resilient support of the invention, the shielding portion can extend radially between the inner sleeve and the outer sleeve. Thus, the shielding portion is surrounded by the outer sleeve on its outer peripheral side. Alternatively or additionally, the shielding portion can have an outer diameter smaller than or at most equal to the inner diameter of the outer sleeve in the transverse central plane of the resilient support, or the shielding portion can have an inner diameter larger than or at most equal to the outer diameter of the inner sleeve in the transverse central plane of the resilient support. The extension of the shielding portion within the radial gap between the inner sleeve and the outer sleeve allows one axial end side of the inner sleeve and / or the outer sleeve to remain uncovered by the cap, especially by its shielding portion. This allows the resilient support to be pressed in during installation, even though the cap has been pre-installed, without damage or compression of the cap by the pressing tool. The transverse central plane is chosen here because, in the case of resilient supports, especially hydraulic supports, the membrane preferably does not extend through the inner diameter of the outer sleeve in the central region or transverse central plane. Advantageously, the corresponding diameter of the shielding portion is selectable so that the shielding portion does not extend radially beyond the outer sleeve or the inner sleeve and allows the resilient support to be supplied to the customer along with the pre-installed cap. This design scheme is therefore an optimized workflow.

[0030] According to a conceivable improvement of the elastic support of the present invention, the shielding portion can cover one axial end side of the outer sleeve. This shielding portion can thus form an axial stop, especially depending on the choice of the appropriate shielding material.

[0031] According to an improved embodiment of the elastic support of the present invention, the cover may also have a plurality of radially extending ribs. These ribs may be arranged on the shielding portion, preferably extending along its entire longitudinal direction. The ribs may reinforce the shielding portion radially and / or axially, thus enabling reliable axial preload. Furthermore, the ribs increase the bending strength of the shielding portion, thereby accelerating the return of the cover to its initial geometry in cases where the cover may bend or flatten due to support stress. The ribs may be integrally manufactured with the shielding portion or may be manufactured separately and then connected to the shielding portion. The ribs may be arranged on an outer end of the shielding portion, wherein the outer end may face away from the transverse central plane or the elastic support. This saves structural space within the support. The ribs may be arranged radially about the central longitudinal axis, preferably equidistantly, to provide uniform reinforcement. Axial preload can be reliably applied by means of the ribs. It is conceivable that the ribs are positioned at one end on the support sleeve or cylindrical portion and / or narrow along its longitudinal axis, preferably increasing with the distance from the support sleeve or cylindrical portion. This provides a progressive bending characteristic of the shielding portion. It is conceivable that the rib extends from the support sleeve or cylindrical portion all the way to the circumferential side edge of the shield. Thus, the shield can be reinforced throughout its entire radial extension.

[0032] According to a conceivable improvement of the elastic support of the invention, the material thickness of the shield along its axial direction can remain constant within its radial extension or decrease as the radial distance from the fixed circumferential side or one of the two floating circumferential sides increases, preferably always and / or continuously decreasing. This is particularly advantageous when the cover is not ribbed but designed as a single piece or of uniform material. In this case, large axial bendability can be obtained by decreasing the material thickness along the axial direction of the shield within its radial extension, ensuring sufficient clamping force of the shield on the corresponding contact surface within the range of large axial and radial deflections of the support. Simultaneously, sufficient bending rigidity of the cover is obtained through this design, ensuring rapid and reliable return to the initial geometry in the event of outward bending or flattening.

[0033] According to a conceivable improvement of the elastic support of the present invention, the cover may be entirely composed of an elastomer, i.e., the shielding portion, the support sleeve, the cylindrical portion, and / or the ribs. The elastomer is flexible and can adapt to deformation. Alternatively, the support sleeve may be made of thermoplastic or metallic material. It can then be easily compressed and / or withstand forces.

[0034] Manufacturing refers to the process of processing the component. Pre-assembly refers to the process of manufacturing the elastic support into a complete form, in which a pre-assembled state exists. After pre-assembly, the elastic support should therefore be in this complete state. Installation refers to the process of fixing the elastic support to its designated location or within it suitable for use, in which an installed state exists. Typically, such an elastic support is pressed into a receiving structure, such as a receiving hole. The support bushing is described in the unloaded state, while the loaded state or installation state is specified separately here. Attached Figure Description

[0035] Other features, details, and advantages of the present invention are derived from the following description of embodiments in conjunction with the figures, wherein:

[0036] Figure 1 shows a longitudinal cross-sectional view of the elastic support of the present invention having a cover of the first embodiment;

[0037] Figure 2 shows a longitudinal cross-sectional view of the cover according to the second embodiment;

[0038] Figure 3 shows a top view of the cover according to the third embodiment;

[0039] Figure 4 shows a longitudinal cross-sectional view of the cover according to Figure 3;

[0040] Figure 5 shows a top view of the cover according to the fourth embodiment; and

[0041] Figure 6 shows a longitudinal cross-sectional view of the cover according to Figure 5.

[0042] List of reference numerals

[0043] 2. Elastic support

[0044] 3 Support body

[0045] 4 Inner sleeve

[0046] 6. Outerwear

[0047] 8. Elastomers

[0048] 10 Protective Cover

[0049] 12 Shielding section

[0050] 14 Air gap

[0051] 16. Central Direction

[0052] 18 Support sleeve

[0053] 20 Cylindrical section

[0054] 22 ribs

[0055] 24 ring sections

[0056] 26 inner week

[0057] 28 Periphery

[0058] 30 Edge

[0059] 32 Air Space

[0060] 34 Elastic band

[0061] 36 cavities

[0062] 38 cavities

[0063] 40 Elastic Membrane

[0064] 42 end side

[0065] 44 end side

[0066] 46 end side

[0067] 48 end side

[0068] A. Central longitudinal axis

[0069] B-axis structural space requirements

[0070] Area C

[0071] Q. Lateral center plane

[0072] R radial

[0073] U Zhou Xiang Detailed Implementation

[0074] In the figures, identical or corresponding components are labeled with the same reference numerals and are therefore not redescribed unless inappropriate. Features already described are not redescribed to avoid duplication and can be used for all components with the same or corresponding reference numerals unless explicitly excluded. Disclosure contained in all specifications is applicable, by its meaning, to components with the same reference numerals or the same component names. Location descriptions selected in the specification, such as upper, lower, lateral, etc., also relate to the figures just described and shown and are adapted to new locations according to their meaning. Furthermore, individual features or combinations of features from the different embodiments shown and described may be independent, inventive, or solutions according to the invention.

[0075] The radial direction R extends from the central longitudinal axis A. The circumferential direction U extends around the central longitudinal axis A, and the transverse central plane Q is arranged such that its normal vector lies on the central longitudinal axis A. The transverse central plane Q extends centrally through the elastic support 2.

[0076] Figure 1 shows a pre-assembled resilient support 2, which is a hydraulic support or a hydraulic resilient support. A central longitudinal axis A extends through the resilient support 2. The resilient support 2 includes an inner sleeve 4 and an outer sleeve 6 that surrounds the inner sleeve 4, forming a radial gap. An elastomer 8 is placed within this gap, vulcanized onto the inner sleeve 4 and annular segments 24, connecting the inner sleeve 4 to the annular segments 24. Here, the annular segments 24 are portions of a cage vulcanized into the elastomer 8. The annular segments 24 are covered only with a thin strip of elastomer at their ends facing away from the transverse central plane Q. After the outer sleeve 6 is fitted onto the support body 3, which consists of the elastomer 8, the cage along with its two annular segments 24, and the inner sleeve 4, during pre-assembly, the outer sleeve 6 is connected to the support body 3 in a force-transmitting and / or form-fitting manner. This force-transmitting and / or form-fitting connection can be achieved, for example, by calibrating at least a portion of the outer sleeve 6 and / or rolling the axial ends of the outer sleeve 6. Multiple seals, such as resilient sealing lips, may be provided between the annular segments 24 and the outer sleeve 6.

[0077] The elastomer 8 divides the gap into at least two cavities 36, 38 that are filled or can be filled with fluid, and these cavities are interconnected by at least one channel (not shown). The elastomer 8 has two easily expandable elastic membranes 40 that define the two cavities 36, 38 at their ends. Each elastic membrane 40 extends radially between the inner sleeve 4 and the corresponding annular segment 24.

[0078] Each axial end of the elastic support 2 is provided with a cover 10 having an inner circumference 26 and an outer circumference 28. The covers 10 are designed identically. For simplicity, only one of the covers 10 will be described below. The cover 10 includes a support sleeve 18, which is designed as a cylindrical sleeve and fixed in position to the inner sleeve 4. This is the only fixed position of the cover 10. The cover 10 is therefore fixed only in position on the inner circumferential side, for example, by compression. Alternatively, it is entirely conceivable that the support sleeve 18 is floating on the inner sleeve 4 and also floating on the outer circumferential side. The cover 10 is therefore a cover 10 floating on both the inner and outer circumferential sides.

[0079] Starting from the support sleeve 18, the annular and / or disc-shaped shielding portion 12 and rib 22, without corrugated geometry, extend radially R. The support sleeve 18 is manufactured separately from the shielding portion 12 and rib 22 and is made of a different material. For example, the shielding portion 12 and the support sleeve 18 are manufactured using a two-component injection molding process. The shielding portion 12, together with the rib 22, is sprayed or vulcanized onto the support sleeve 18. The support sleeve 18 is designed to be inelastic on its fixing radial side, i.e., on its inner circumferential side.

[0080] The annular shield 12 has an axial structural space requirement B, and it can be seen here that the support sleeve 18 has an axial extension dimension equivalent to 2.5 times the axial structural space requirement B of the shield 12. It can be seen that the axial material thickness of the shield 12 remains constant along the radial direction R, but this should be considered exemplary rather than limiting. The shield 12 and the rib 22 are made of elastomers and are therefore elastically deformable within their respective geometries. The shield 12 is entirely elastic.

[0081] The shield 12 has an edge 30 on its outer periphery that coincides with the outer periphery 28. The edge 30 is a free edge. The edge 30 of the shield 12 is floatingly attached to the elastomer 8 in the direction of the central longitudinal axis Z with a preload. The shield 12 or its outer periphery edge 30 is attached to the elastomer 8 in an end-side region C or contact region. It can be seen that the shield 12 of the cover 10 is not attached to the elastic membrane. Region C is centered in the radial direction R relative to the axially adjacent ring segment 24. Region C has a radial extension dimension that is twice the radial extension dimension of the adjacent ring segment 24. Region C is arranged on the end side on the elastic ring 34, which is made of the elastomer 8 as a thin rubber sheet and covers the respective ring segment 24. An air gap 14 defining a radial distance can be formed between the outer periphery 28 or edge 30 and the outer sleeve 6. The cover 10 and the elastomer 8 sandwich an air space 32.

[0082] The shielding portion 12 has an outer end side 42 facing away from the transverse central plane Q or the elastic body 8 and an inner end side 44 facing the transverse central plane Q or the elastic body 8. The two end sides 42, 44 of the shielding portion have a convex orientation with respect to the transverse central plane Q or the elastic body 8. They therefore protrude from the transverse central plane Q or the elastic body 8. The shielding portion 12 has a central orientation 16 defined by the orientation of the end sides. Therefore, the central orientation 16 also extends convexly and continuously with respect to the transverse central plane Q or the elastic body 8.

[0083] The cover 10 includes a plurality of ribs 22 that extend radially R about the central longitudinal axis Z and are mounted on the shield 12 radially R along their entire longitudinal extension. Furthermore, the ribs 22 extend equidistantly radially about the central longitudinal axis Z. The ribs 22 can also be seen extending from the support sleeve 18 to the outer peripheral edge 30 of the shield. The ribs 22 are mounted at one end on the support sleeve 18 and narrow along their longitudinal axis as they move further away from the support sleeve 18. Their respective material thickness along the axial direction thus continuously decreases.

[0084] The shielding portion 12 extends radially between the inner sleeve 4 and the outer sleeve 6, and is therefore surrounded on the outer periphery by the outer sleeve 6. The axial end sides 46, 48 of the inner sleeve 4 and the outer sleeve 6 can be freely accessed axially or are not covered, especially not covered by the shielding portion 12.

[0085] To avoid repetition, the following should only describe the differences between Figure 2 and Figure 1. Features not described should be assumed to have been disclosed and described in fact.

[0086] In Figure 2, the cover 10 of the second embodiment no longer has a separate support sleeve 18. Instead, the cover 10 is a single piece made of an elastomer in a uniform material configuration. Instead, the cover 10 includes a cylindrical portion 20, which securely or buoyantly supports the cover 10 on the inner sleeve 4. A shielding portion 12 protrudes radially R from the cylindrical portion 20. In Figure 2, the cover 10 no longer has ribs 22. Instead, the shielding portion 12 is designed such that its axial material thickness decreases with increasing distance from the cylindrical portion 20. The shielding portion 12 is therefore constructively designed to be more elastic than the cylindrical portion 20, at least in its outer peripheral region. The axial extension of the cylindrical portion 20 is equivalent to 1.3 times the axial structural space requirement B of the shielding portion. The outer end side 42 has an inclined orientation, while the inner end side 44 still has a convex orientation.

[0087] To avoid repetition, the following should only describe the differences between Figure 3 and Figure 4 and Figure 1. Features not described should be assumed to have been disclosed and described in fact.

[0088] Figures 3 and 4 show two views of the cover 10 according to the third embodiment. In Figures 3 and 4, the cover 10 no longer has a separate support sleeve 18. Instead, the ribs 22, together with the shielding portion 12 and the cylindrical portion 20, are formed as a two-component injection molded part. Figure 3 shows in particular the radial arrangement of the ribs 22. The cylindrical portion 20 is now designed as a rigid component. The ribs 22 and the shielding portion 12 can be formed in one piece in a uniform material manner.

[0089] Figures 5 and 6 show two views of the cover 10 of the fourth embodiment. Compared to the third embodiment, it is now a reinforced single-component solution or a monolithic / material-uniform cover 10.

[0090] This invention is not limited to one of the foregoing embodiments, but can be modified in a variety of ways. All features and advantages derived from the claims, description, and figures, including details, spatial arrangements, and method steps, may be important to the invention not only individually but also in various different combinations.

[0091] All combinations of at least two features disclosed in the specification and / or figures fall within the scope of this invention.

[0092] To avoid duplication, features disclosed in relation to the apparatus should also be considered as disclosed in relation to the method and are therefore claimable. Similarly, features disclosed in relation to the method should also be considered as disclosed in relation to the apparatus and are therefore claimable.

Claims

1. A resilient support having a central longitudinal axis (A) extending through it, the resilient support comprising an inner sleeve (4), an outer sleeve (6) surrounding and enclosing the inner sleeve (4), an elastic body (8) connecting the inner sleeve (4) to the outer sleeve (6), and at least one cover (10) disposed at one axial end of the resilient support (2), characterized in that, The cover (10) is fixed only on the inner circumferential side or on the outer circumferential side and has a flexible shield (12) extending in the radial direction (R), wherein the shield (12) is attached to the elastic body (8) in the direction of the central longitudinal axis (A) with a preload, or the shield (12) is attached to the ring segment (24) of the cage of the elastic body (8) in the direction of the central longitudinal axis (A) with a preload.

2. The elastic support according to claim 1, characterized in that, The shielding part (12) is axially adjacent to the ring segment (24) with a pre-tightening force.

3. The elastic support according to any one of the preceding claims, characterized in that, The cover (10) is mounted on the inner sleeve (4) or the outer sleeve (6) by means of a floating support on its non-positionally fixed circumferential side and / or mounted on its positionally fixed circumferential side by means of a form-fitting and / or force-fitting support.

4. The elastic support according to claim 1, characterized in that, The center direction (16) of the shield (12) extends convexly, concavely, or obliquely about the transverse center plane (Q) of the elastic support (2).

5. The elastic support according to claim 1, characterized in that, The cover (10) includes a support sleeve (18) which fixes the cover (10) to the inner sleeve (4) or the outer sleeve (6) in a fixed position, wherein the support sleeve (18) is designed to be made of a different material than the shielding part (12).

6. The elastic support according to claim 1, characterized in that, The cover (10) is designed as a one-piece piece made of uniform material and includes a cylindrical part (20) that fixes the cover (10) to the inner sleeve (4) or the outer sleeve (6), and / or the shielding part (12) and the cylindrical part (20) of the cover (10) are designed as two-component injection molded parts.

7. The elastic support according to claim 1, characterized in that, The shielding portion (12) extends radially (R) between the inner sleeve (4) and the outer sleeve (6), and / or the shielding portion (12) has an outer diameter that is less than or at most equal to the inner diameter of the outer sleeve (6) in the transverse center plane (Q), or the shielding portion (12) has an inner diameter that is greater than or at most equal to the outer diameter of the inner sleeve (4) in the transverse center plane (Q).

8. The elastic support according to claim 1, characterized in that, The cover (10) also has a plurality of radially extending ribs (22).

9. The elastic support according to claim 1, characterized in that, The elastic support is a hydraulic elastic support.

10. The elastic support according to claim 2, characterized in that, The contact area (C) is formed radially (R) at the height of the corresponding ring segment (24).

11. The elastic support according to claim 4, characterized in that, In the pre-installed state, the center direction (16) of the shield (12) extends convexly, concavely, or obliquely about the transverse center plane (Q) of the elastic support (2).

12. A resilient support having a central longitudinal axis (A) extending through it, the resilient support comprising an inner sleeve (4), an outer sleeve (6) surrounding and enclosing the inner sleeve (4), an elastic body (8) connecting the inner sleeve (4) to the outer sleeve (6), and at least one cover (10) disposed at one axial end of the resilient support (2), characterized in that, The cover (10) is mounted on the inner and outer circumferential sides by means of floating supports and has an elastic shield (12) extending in the radial direction (R).

13. The elastic support according to claim 12, characterized in that, The elastic support is a hydraulic elastic support.

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