Elastomer bearing with protective cap

Abstract

Elastomer bearing (2) through which a central longitudinal axis (A) extends, comprising an inner sleeve (4), an outer sleeve (6) which circumferentially surrounds the inner sleeve (4), an elastomer body (8) which connects the inner sleeve (4) to the outer sleeve (6), and at least one protective cap (10) which is arranged at an axial end of the elastomer bearing (2), wherein the protective cap (10) has an elastomer protective cap body (16) and a ring element (12) which is arranged at least in sections in the protective cap body (16) and between the inner sleeve (4) and the outer sleeve (6), characterized in that the protective cap body (16) has an axial cushion thickness (DA) axially of the ring element (12) and facing a transverse center plane (Q) of the elastomer bearing (2), which is greater than its inner radial cushion thickness (DRI) radially inward of the ring element (12) and / or greater than its outer radial cushion thickness (DRA) radially outside the ring element (12).

Description

The invention relates to an elastomer bearing according to the preamble of claim 1.Elastomer bearings are known from practice, comprising an inner sleeve, an outer sleeve which surrounds the inner sleeve on the circumferential side, and an elastomer body. The elastomer body connects the inner sleeve to the outer sleeve. In order to protect the elastomer body, in particular from heat, elastomer bearings of this type can now comprise a protective cap, as shown, for example, in DE 10 2007 028 041 B4.DE 10 2007 028 041 B4 discloses a protective cap which is likewise plugged onto the inner sleeve and the outer sleeve. For this purpose, the inner sleeve must protrude significantly beyond the connection point of the elastomer body in the axial direction, so that the elastomer body does not induce any axial relative movements into the protective cap during the axial compression. Furthermore, the protective cap cannot limit the radial deflection of the bearing. Since the protective cap is pressed onto the inner sleeve as well as the outer sleeve or is firmly connected thereto, it is likewise disadvantageously loaded for rotation by a rotation of the elastomer bearing about its own longitudinal axis. The protective cap itself has hardly any contact with the elastomer body of the elastomer bearing even when there is a strong radial deflection. Thus, it has a negligible influence on the characteristics of the elastomer bearing, for example, in that it cannot chamber the elastomer body of the bearing. The possibilities for influencing the stiffness of the elastomer bearing by the protective cap are therefore very limited.CN 2 06 306 755 U, JP S62-26 704 U, EP 1 431 595 A2 each disclose a bearing bush with end caps which extend from a core to an outer sleeve. EP 0 199 240 A2 discloses a bushing-like bearing element which has end caps which connect an inner bushing to an outer ring. EP 2 080 926 A1 discloses a bushing which has a stop on each of its two axial end sides between a core body and a surrounding enveloping body. JP 2005-16 696 A teaches a bearing bush which has a cap in each case at both ends axially. JP 2006-170 324 A likewise discloses a bearing bush which has a cap axially at both end times. A ring element is contained in the cap.In addition, protective caps are known from practice, which are used in elastomer bearings subjected to high thermal loads in order to reduce the thermal load of the elastomer bearing by direct thermal radiation and to increase its service life. Protective caps are also known which reduce the oxidative attack of the ambient air by reducing the air exchange on the surface of the elastomer or the flow of ambient air onto the elastomer surface. However, when the elastomer bearing is radially compressed, the elastomer body can be displaced axially outwards to such an extent or can be deformed in this direction that it would interact with the fastening of the protective cap on the inner sleeve and could sometimes even strip off the protective cap axially outwards if it is not fixed there in the axial direction.It is therefore the object of the invention to provide an elastomer bearing which overcomes the aforementioned problems, in particular to propose a secure fastening of a protective cap.Main features of the invention are set out in the characterizing part of claim 1. Embodiments are the subject matter of claims 2 to 9.According to the invention, therefore, an elastomer bearing is proposed, through which a central longitudinal axis extends, comprising an inner sleeve, an outer sleeve, which surrounds the inner sleeve on the circumferential side, an elastomer body, which connects the inner sleeve to the outer sleeve, and at least one protective cap, which is arranged at an axial end of the elastomer bearing, wherein the protective cap has an elastomer protective cap body and a ring element, which is arranged at least in sections in the protective cap body and / or between the inner sleeve and the outer sleeve.The elastomer bearing according to the invention therefore has a protective cap which is reinforced on the inner sleeve side by means of the ring element. Not only is the elastomeric protective cap reinforced as such, but also a higher fastening force can be applied by the ring element, which fastening force has not been attainable up to now and which successfully counteracts unwanted stiffening. The protective cap can be a heat protection cap and / or a flow protection cap and / or ring-disk-shaped.This ring element is arranged at least in sections in the intermediate space between the inner sleeve and the outer sleeve and / or can project from the axial end side along the central longitudinal axis into the intermediate space of the inner sleeve and the outer sleeve, in order to thereby function as a radial stop between the inner sleeve and the outer sleeve. If a gap or free space between the outer sleeve, the inner sleeve and the elastomer body is filled to the greatest possible extent by the elastomer body deforming under load, the elastomer body can be expanded when the elastomer bearing springs in. The protective cap enclosing the ring element can thus be used in an advantageous manner for influencing the bearing identification. In addition, the protective cap enclosing the ring element can serve as a radial stop in order to adapt or restrict the radial adjustment paths of the elastomer bearing.The elastomer bearing according to the invention can also have two protective caps, preferably of identical configuration, wherein the protective caps can be arranged at opposite axial ends of the elastomer bearing. Features described for a protective cap may apply to both protective caps. However, the protective caps can also be designed differently from one another.The elastomer body can comprise a main body and an elastomer outlet on the inner and / or outer sleeve side. The elastomer outlet can be present due to production and / or have a stop buffer function.The elastomer bearing is described in the unloaded state, reference being made separately to load cases.According to one conceivable refinement of the elastomer bearing according to the invention, an elastomer cushion can be arranged on the ring element radially on the inside and / or radially on the outside and / or axially facing a transverse central plane of the elastomer bearing and / or axially facing away from a transverse central plane of the elastomer bearing. The elastomer cushion can be formed by the protective cap body. As a result, the ring element is provided with an elastomer cushion depending on the selected spatial direction, in order to buffer stops. In addition, a correspondingly arranged elastomer cushion on the ring element can avoid damaging direct contact with the elastomer body. This applies in particular in radial compression when the elastomer cushion on the ring element chambers the bulging main body of the elastomer body.According to one conceivable refinement of the elastomer bearing according to the invention, the ring element and / or the ring disk element can be arranged in the protective cap body, preferably almost completely. This embodiment serves for corrosion protection; only production-related holding marks, which serve to position the ring element in the mold during injection molding with elastomer, cannot be coated with elastomer in such a case.According to one conceivable refinement of the elastomer bearing according to the invention, the protective cap can be arranged in such a way that it axially covers the elastomer body at least in sections or its main body at least in sections, preferably completely. As a result, a heat input from outside the bearing into the outer sleeve can be reliably avoided.According to one conceivable development of the elastomer bearing according to the invention, the protective cap can end axially at the end of the elastomer bearing with the inner sleeve or can protrude back in the axial direction with respect to the inner sleeve. An axially compact construction can thereby be achieved. In addition, the assembly of the elastomer bearing by fixing the inner sleeve, for example by means of screwing, can thereby be facilitated, since the axial installation space is free of the protective cap.According to one conceivable development of the elastomer bearing according to the invention, the ring element and / or an annular disk element can be formed closed and / or continuous in the circumferential direction. As a result, high fastening forces can be applied. The ring element can alternatively or additionally be a hollow cylinder, wherein a large contact surface can thereby be realized.According to a further development of the elastomer bearing according to the invention, the protective cap can be firmly connected to the inner sleeve, preferably only firmly connected to the inner sleeve. For this purpose, the protective cap can have an inner circumference. This inner periphery may be formed at a through hole or a flange portion, for example. The fixed connection can be a press connection, whereby a production of the elastomer bearing is simplified; the protective cap is namely to be slid onto the inner sleeve only in the axial direction for its fastening. Due to the fixed connection to the inner sleeve, the protective cap can move together with the inner sleeve. The protective cap can abut the outer sleeve in a relatively movable manner or be mounted in a floating manner there; however, no forces or moments, if any, are transmitted between the outer sleeve and the protective cap. Between the protective cap and the inner sleeve, an elastomer outlet in the form of an elastomer skin can be arranged, which, however, does not oppose the firm connection to the inner sleeve, since here too the protective cap can move together with the inner sleeve relative to the outer sleeve. The elastomer outlet can then be prestressed by the ring element, whereby an undesired wiping off is further reliably prevented. This fastening of the protective cap also leads to the protective cap no longer being subjected to a disadvantageous and damaging load on rotation during rotation of the outer sleeve relative to the inner sleeve.According to a further development of the elastomer bearing according to the invention, the protective cap can comprise the ring element as a separate part. The ring element can be an insert part of the protective cap and can be surrounded and enclosed by the elastomer of the protective cap by injection molding. As a result, a suitable material can be selected for the ring element independently of the material of the protective cap in order to realize the advantages according to the invention. This can also apply equally to the annular disk element.According to the invention, the protective cap body has an axial cushion thickness axially of the ring element and facing a transverse central plane of the elastomer bearing, which is greater than its inner radial cushion thickness radially inside the ring element and / or greater than its outer radial cushion thickness radially outside the ring element. If an elastomer cushion is provided facing radially on the inside and / or radially on the outside and / or axially toward a transverse central plane of the elastomer bearing and / or facing axially away from a transverse central plane of the elastomer bearing, the aforementioned cushion thicknesses can be the thicknesses of this elastomer cushion. Advantageously, the pad thicknesses are not of the same extent; rather, the pad thickness can be higher, directed toward the bearing inward or facing the transverse central plane of the elastomer bearing, than, for example, the elastomer-provided load-bearing surfaces of the ring element (for example, radial pad thickness on the inside and / or on the outside) for the radial stop function. Thus, the free space for the elastomer body can be adjusted in a targeted manner. This can influence the chambering and ultimately the stiffness of the elastomer bearing in a targeted manner. At the same time, thin inner radial pad thicknesses radially on the inside of the ring element and / or thin outer radial pad thickness radially on the outside of the ring element lead to a longer service life of these elastomer regions during radial compression, since thin rubber tracks can withstand higher compressive forces under compressive load than thick rubber tracks.According to a further development of the elastomer bearing according to the invention, the protective cap can have an annular disk element which preferably projects beyond the outer sleeve in the radial direction. The protective cap can thus have the annular disk element in addition to the ring element. The protective cap can now also be axially reinforced by means of the annular disk element in addition to the radial reinforcing effect of the annular element. The protective cap can thereby serve as an axial stop and restrict the axial adjustment travel of the elastomer bearing, wherein this preferably acts particularly well if the annular disk element protrudes beyond the outer sleeve in the radial direction. This is because the outer sleeve can then strike against the annular disk element upon axial deflection. Projecting from the annular disk element relative to the outer sleeve is preferable to a configuration with the same radial extension, since a reliable limitation of the displacement travel can be ensured even if, in the event of loading, the inner sleeve and the outer sleeve are oriented tilted relative to one another or not coaxially. However, the annular disk element does not necessarily have to project beyond the outer sleeve in the radial direction; an identical radial extension likewise serves to limit the adjustment travel in the axial direction. In addition, the axial rigidity progression of the protective cap can be influenced by means of the annular disk element.It is conceivable for the protective cap or an end face ring disk section to project beyond the outer bushing in the radial direction. At least the protruding part may be free of the ring disk element. The protective cap can prevent contact between the outer sleeve and an attachment even without an annular disk element. However, since the protective cap is relatively pressure-soft, its influence on the axial rigidity progression without the ring disk element tends to be small. Furthermore, there is the risk that the protective cap is punched through by means of the outer sleeve and is thus considerably damaged.According to one conceivable refinement of the elastomer bearing according to the invention, the annular disk element can be arranged in such a way that it axially covers the elastomer body at least in sections or its main body in sections, preferably completely. As a result, a heat input from outside the bearing by means of thermal radiation can be reliably avoided.According to one conceivable refinement of the elastomer bearing according to the invention, the inner sleeve can have a greater axial extent than the outer sleeve. This difference in length can be used advantageously to achieve covering or projecting of the protective cap and / or of the annular disk element in the radial direction with respect to the outer sleeve. As a result, the installation space can be used compactly and a relatively small elastomer bearing can be realized.According to a further development of the elastomer bearing according to the invention, the protective cap can have an outer circumferential ring section, which is preferably arranged on the outer circumferential side of the outer sleeve and / or an inner circumferential ring section, which is preferably arranged at least in sections in the intermediate space of the inner sleeve and the outer sleeve and / or receives the ring element at least in sections. The protective cap may comprise an end ring disc portion. This can connect the inner circumferential ring section and the outer circumferential ring section to one another and be arranged therebetween or else can also be connected only to one of the two other sections. The three sections can therefore form a C-shape in longitudinal section. The C-shape serves in particular for projecting the outer sleeve. Adjacent sections may be oriented at right angles to each other. End ring disk section, inner circumferential ring section and / or outer circumferential ring section can be sections of the protective cap body or form the protective cap body. However, it is also conceivable that only one of the sections or only two of the sections are provided. In the end face annular disc section, the annular disc element can be arranged at least in sections. The outer circumferential ring portion may extend in the axial direction. It further increases a protective effect for the elastomer body, and it further reduces the flow of hot ambient air to the elastomer cushion. Oxidation of the elastomer body is thus further reduced and the overall service life of the elastomer bearing is improvedAccording to a further development of the elastomer bearing according to the invention, the ring element and the ring disk element can be formed in one piece. The ring element and the ring disk element can therefore form an L-shape in longitudinal section and / or be oriented at right angles to one another. As a result, the protective cap can be produced more easily, since only one component (ring element integral with ring disk element) has to be inserted into the vulcanization or injection molding tool. In addition, the one-piece design increases the rigidity, since the annular disk element then directly benefits from the fastening force of the annular element on the inner sleeve; in the event of axial contact, it can thus have a more rigid effect.According to a further development of the elastomer bearing according to the invention, the ring element and / or the ring disk element can / can be manufactured from a metal or from a plastic. A thermoplastic or thermosetting plastic is conceivable, for example. If the ring element and / or the ring disk element is produced from a thermoplastic which can produce adhesion to the elastomer component of the protective cap, the protective cap comprising the ring element and / or the ring disk element can be produced cost-effectively by means of 2K injection molding.According to a further development of the elastomer bearing according to the invention, the ring element can have at least one phase and / or rounded portion on the inner circumference. The same can additionally or alternatively apply to the protective cap, the protective cap body and / or the inner circumferential ring section. The phase and / or rounded portion can be arranged on the side of the respective inner periphery facing the transverse central plane. The phase and / or rounding serves, during the radial compression of the elastomer bearing, for the purpose of not damaging the elastomer of the elastomer body that is displaced axially outwards. The phase and / or rounding also serves for simplified assembly, because the protective cap can thereby be pushed on in a self-centering manner and without complicated positioning.According to a further development of the elastomer bearing according to the invention, the ring element can be formed at least on the inner circumference at least in sections free of an elastomer coating or free of the protective cap body. An elastomeric coating may be any covering elastomeric element of the protective cap. It is conceivable, for example, for the ring element to have no elastomer coating on the inner circumference. As a result, it is possible, for example, to dispense with an adhesive in the corresponding region.Further features, details and advantages of the invention are evident from the wording of the claims and from the following description of exemplary embodiments on the basis of the drawings. The following are shown: FIG. 1 is a longitudinal sectional view of an elastomer bearing according to the invention of the first embodiment; FIG. 2 shows a longitudinal sectional view of an elastomer bearing according to the invention of the second embodiment; FIG. 3 shows a longitudinal sectional view of an elastomer bearing according to the invention of a third embodiment, and FIG. 4 is a longitudinal sectional view of an elastomer bearing according to the invention of fourth embodiment.In the figures, the same or corresponding elements are each denoted by the same reference numerals and will therefore not be described again unless appropriate. Features already described are not described again in order to avoid repetitions and can be applied to all elements with the same or mutually corresponding reference numerals, unless explicitly excluded. The disclosures contained in the entire description can be transferred analogously to identical parts with identical reference numerals or identical component names. The position information selected in the description, such as top, bottom, side, etc., also relates to the directly described and illustrated figure and, in the event of a change in position, is to be transferred analogously to the new position. Furthermore, individual features or combinations of features from the different exemplary embodiments shown and described can also represent independent solutions according to the invention or solutions according to the invention per se.Starting from a central longitudinal axis A, a radial direction R. A transverse central plane Q is arranged in such a way that its normal vector lies on the central longitudinal axis A. A circumferential direction U extends around the central longitudinal axis A. The elastomer bearing 2 is described in the unloaded state, wherein reference is made separately to load cases.FIG. 1 shows an elastomer bearing 2, which can be inserted, for example, in a receiving eye 50. The elastomer bearing 2 comprises an inner sleeve 4 with a hole 5 for fastening a fastening element 52 therein to the elastomer bearing 2. In the example shown, the elastomer bearing 2 thus serves for the elastic mounting of an attachment part 54 via the fastening element 52 on the receiving eye 50. the central longitudinal axis A extends through the elastomer bearing 2 in the axial direction.The elastomer bearing 2 also comprises an outer sleeve 6, which is arranged circumferentially with respect to the inner sleeve 4. Inner sleeve 4 and outer sleeve 6 are aligned coaxially with respect to one another, wherein the inner sleeve 4 has a greater axial extent than the outer sleeve 6. the two sleeves 4, 6 are connected to one another by means of an elastomer body 8, wherein the elastomer body 8 is arranged between the two sleeves 4, 6 and is connected to both in a materially integral manner. The elastomer body 8 comprises a main body 14 and four elastomer outlets 15 which are formed in one piece. The elastomer outlets 15 are formed on the outer circumference side on the inner sleeve 4 and on the inner circumference side on the outer sleeve 6 as outlets of the main body 14. They each extend as far as the respective end face of the corresponding sleeve 4, 6.The elastomer bearing 2 further comprises two protective caps 10, wherein the protective caps 10 are arranged at opposite axial ends of the elastomer bearing 2. The protective caps 10 are arranged and configured mirror-symmetrically with respect to the transverse central plane Q. Only one of the two protecting caps 10 will be described below. The protective cap 10 comprises an elastomeric protective cap body 16 which has two sections, namely an inner circumferential ring section 21 and an end face ring disk section 23. The two sections 21, 23 enclose a right angle with one another, wherein the inner circumferential ring section 21 extends in the axial direction, protrudes into the intermediate space of the inner sleeve 4 and the outer sleeve 6 and is arranged there at least in sections. The end face ring disk section 23 extends in the radial direction R and projects beyond the outer circumference of the outer sleeve 6 in the radial direction R.It can be seen that the protective cap 10 is designed and arranged in such a way that it axially covers the elastomer body 8 at least in sections. The protective cap 10 also terminates axially at the end of the elastomer bearing 2 with the inner sleeve 4. A common contact surface for an attachment part 54 is therefore formed.The protective cap 10 also comprises an annular element 12, the annular element 12 is a separate and different material part from the protective cap body 16 and is arranged completely in the protective cap body 16 or its inner circumferential annular section 21. Therefore, an elastomer cushion is arranged radially on the inside, radially on the outside, axially facing the transverse central plane Q and axially facing away from the transverse central plane Q on the ring element. The pad thicknesses in the respective spatial direction are the same.The ring element 12 is closed in the circumferential direction U and is formed continuously. The ring element 12 is arranged at least in sections in the intermediate space between the inner sleeve 4 and the outer sleeve 6. A free space 26 between inner sleeve 4, outer sleeve 6 and elastomer body 8 can be filled to the greatest possible extent by elastomer body 8 deforming under load, so that chambers of elastomer body 8 can occur when elastomer bearing 2 springs in.The protective cap 10 is pushed or pressed onto the inner sleeve 4, wherein it is solely firmly connected there. For this purpose, the protective cap 10 has a corresponding inner periphery 56. An elastomer outlet 15 is arranged in between, which is prestressed by the ring element 12. The protective cap 10 has a continuous air gap 24 with respect to the outer sleeve 6. In other words, the outer sleeve 6 and the protective cap 10 do not have any contact in the unloaded state.On the inner circumferential side facing the transverse center plane Q, the ring element 12 has a phase 20 and the inner circumferential ring section 21 has a phase 19. The phases 19, 20 are congruent.In order to avoid repetitions, only the differences from FIG. 1 will be described with reference to FIG. 2.FIG. 2 shows an elastomer bearing 2, wherein the protective cap 10 now comprises an elastomer protective cap body 16 which has three sections, namely an inner circumferential ring section 21, an outer circumferential ring section 22 and an end face ring disk section 23.The end ring disk portion 23 connects the inner circumferential ring portion 21 and the outer circumferential ring portion 22 to each other and is interposed therebetween. The three sections 21, 22, 23 form a C-shape when viewed in longitudinal section, wherein the adjacent sections 21, 22, 23 are at right angles to one another.The protective cap body 16 has an axial cushion thickness DA axially of the ring element 12 and facing the transverse central plane Q, which is equal to its inner radial cushion thickness DRI radially inside the ring element 12 and equal to its outer radial cushion thickness DRA radially outside the ring element 12. This embodiment applies equally to FIG. 1.In order to avoid repetitions, only the differences from FIG. 2 will be described with reference to FIG. 3.FIG. 3 shows an elastomer bearing 2, in which the inner circumferential ring section 21 now has a rounded portion 28 instead of a phase. The protective cap body 16 now additionally does not have a uniform pad thickness, because the axial pad thickness DA axially of the ring element 12 and facing the transverse central plane Q is greater than the inner radial pad thickness DRI radially inside the ring element 12 and greater than the outer radial pad thickness DRA radially outside the ring element 12, as a result of which the free space 26 is reduced compared to the embodiments of FIGS. 1 and 2.In order to avoid repetitions, only the differences from FIG. 3 will be described with reference to FIG. 4.FIG. 4 shows an elastomer bearing 2, the receiving eye 50, the fastening element 52 and the attachment part 54, which can be part of a body or part of an auxiliary frame, for example.The protective cap 10 now additionally comprises an annular disk element 18. The annular disk element 18 is therefore a part different in material from the protective cap body 16 and is arranged completely in the protective cap body 16 or its end face annular disk section 23. Thus, an elastomer cushion is arranged radially on the inside, radially on the outside, axially facing the transverse central plane Q and axially facing away from the transverse central plane Q on the annular disk element 18. Ring element 12 and ring disk element 18 form an L-shape when viewed in longitudinal section and enclose a right angle with one another.The annular disk element 18 is closed in the circumferential direction U and is formed continuously. The annular disk element 18 protrudes beyond the outer sleeve 6 in the radial direction R.The invention is not limited to one of the above-described embodiments, but can be modified in many ways. All features and advantages which emerge from the claims, the description and the drawing, including structural details, spatial arrangements and method steps, can be essential to the invention both individually and in a wide variety of combinations.All combinations of at least two of the features disclosed in the description, the claims and / or the figures fall within the scope of the invention.To avoid repetitions, features disclosed according to the device should also be considered disclosed and claimable according to the method. Features disclosed according to the method should likewise be considered to be disclosed and claimable according to the device.List of reference characters2 Elastomer bearing 4 Inner sleeve 5 Hole 6 Outer sleeve 8 Elastomer body 10 Protective cap 12 Ring element 14 Main body 15 Elastomer outlet 16 Protective cap body 18 Ring disk element 19 Phase 20 Phase 21 Inner circumferential ring section 22 Outer circumferential ring section 23 End face ring disk section 24 Air gap 26 Free space 28 Rounded portion 50 Receiving eye 52 Fastening element 54 Attachment 56 Inner circumference A Central longitudinal axis DRA Radial cushion thickness on the outer circumferential side DRI Radial cushion thickness on the inner circumferential side DA Axial cushion thickness Q Transverse center plane R Radial direction U Circumferential direction

Claims

Elastomer bearing (2) through which a central longitudinal axis (A) extends, comprising an inner sleeve (4), an outer sleeve (6) which surrounds the inner sleeve (4) on the circumferential side, an elastomer body (8) which connects the inner sleeve (4) to the outer sleeve (6), and at least one protective cap (10) which is arranged at an axial end of the elastomer bearing (2), wherein the protective cap (10) has an elastomer protective cap body (16) and a ring element (12) which is arranged at least in sections in the protective cap body (16) and between the inner sleeve (4) and the outer sleeve (6), characterized in that the protective cap body (16) has an axial cushion thickness (DA) axially of the ring element (12) and facing a transverse central plane (Q) of the elastomer bearing (2), which is greater than its inner radial pad thickness (DRI) radially inside the ring element (12) and / or greater than its outer radial pad thickness (DRA) radially outside the ring element (12).Elastomer bearing (2) according to one of the preceding claims, characterized in that the protective cap (10) is firmly connected to the inner sleeve (4), preferably is firmly connected only to the inner sleeve (4).Elastomer bearing (2) according to one of the preceding claims, characterized in that the protective cap (10) comprises the ring element (12) as a separate part.Elastomer bearing (2) according to one of the preceding claims, characterized in that the protective cap (10) has an annular disc element (18), which preferably projects beyond the outer sleeve (6) in the radial direction (R).Elastomer bearing (2) according to one of the preceding claims, characterized in that the protective cap (10) has an outer circumferential ring section (22), which is preferably arranged on the outer circumferential side of the outer sleeve (6) and / or has an inner circumferential ring section (21), which is preferably arranged at least in sections in the intermediate space between the inner sleeve (4) and the outer sleeve (6) and / or receives the ring element (12) at least in sections.Elastomer bearing (2) according to Claim 4, characterized in that the ring element (12) and the ring disc element (18) are formed in one piece.Elastomer bearing (2) according to one of the preceding claims, characterized in that the ring element (12) and / or the ring disc element (18) is / are manufactured from a metal or from a plastic.Elastomer bearing (2) according to one of the preceding claims, characterized in that the ring element (12) has at least one phase (20) and / or rounded portion on the inner circumference.Elastomer bearing (2) according to one of the preceding claims, characterized in that the ring element (12) is formed at least on the inner circumference side at least in sections free of an elastomer coating or free of the protective cap body (16).

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