Cage for an elastic bushing and bushing with such a cage

Abstract

Cage (1) for limiting the radial movement of a bearing core (2) in an elastic bushing (3), comprising two cage segments (4a,b), each cage segment (4a,b) comprising an annular section (5) and a plurality of axial webs (6) arranged on the annular section (5), the two cage segments (4a,b) of the cage (1) being designed to be connectable to one another via a snap connection, the snap connection comprising at least one snap pair (7), each snap pair (7) comprising a first snap element (8) and a second snap element (9) corresponding to the first snap element (8), each first snap element (8) comprising a snap hook (10) and each second snap element (9) comprising a snap tab (11), the snap hook (10) and the snap tab (11) being able to be snapped to one another.

Description

[0001] The invention relates to a cage for limiting the radial movement of a bearing core in an elastic bushing according to claim 1. The invention further relates to an elastic bushing comprising such a cage according to claim 7.

[0002] Elastic bushings are used in automotive manufacturing to mount vehicle components. For this purpose, the bushings are pressed into a mounting eye and fixed to a bracket connected to the vehicle body. To ensure good handling, the bushing should have a defined degree of movement in both radial and axial directions.

[0003] For the purposes of this disclosure, the terms "limiting element," "stopper," and "cage" are used synonymously unless otherwise indicated by the context. The terms "latching connection" and "clipping connection," as well as related terms (such as "latching" and "clipping"), are also used synonymously unless otherwise indicated by the context. Finally, the terms "bushing" and "bearing bushing" are also used synonymously unless otherwise indicated by the context. The same applies analogously to the terms "core" and "bearing core."

[0004] For the purposes of this disclosure, "axial direction" or "axial direction" means the direction along the central longitudinal axis of the finished bushing, the central longitudinal axis being the axis running from one end face of the bushing to the other. "Radial direction" or "radial direction" means any direction perpendicular to the axial direction.

[0005] Common bushings typically comprise an outer sleeve, a core, and an elastomer layer positioned between the outer sleeve and the core. Often, the bushings also feature a stopper or limiting element located between the core and the elastomer layer, which serves to limit the movement of the core within the outer sleeve in radial and axial directions.

[0006] From DE 10 2009 041 549 A1, for example, it is known to use a cage as a limiting element for the inner core of an elastic bushing, which is positively engaged in special axially extending recesses of the core. The cage comprises a first and a second cage half, each having axially extending webs that are inserted into the axial recesses from the two end faces of the core.

[0007] From EP 3 015 727 A1, a crankshaft bearing is known which comprises a cage. The cage has two cage segments, each of which comprises a semi-circular section and a plurality of axial webs arranged on the semi-circular section. The axial webs are formed by receiving pockets which can accommodate rolling elements. The two cage segments are designed to be connected to each other via a snap-fit ​​connection.

[0008] DE 10 2022 113 154 A1 discloses an elastomeric bearing with a protective cap. DE 20 2020 001 078 U1 relates to a hydraulic bearing with a cage consisting of two half-shells. EP 2 080 926 A1 and JP 2004 - 263 782 A each disclose a bushing.

[0009] However, manufacturing the previously known bushings requires machining the core's end faces to create a seat for the radial stops of the cage halves. Furthermore, the cage halves must be riveted to the core to fix them in their mounting position. Both process steps are time-consuming and costly.

[0010] The object of the invention is to eliminate the disadvantages of the prior art and to provide an elastic bushing and, in particular, a cage for limiting the radial movement of the bearing core within the elastic bushing, wherein the cage should be easily and reliably fixed to the bearing core during bushing assembly. The main features of the invention are specified in claim 1. A further aspect of the invention is described in claim 7. Specific embodiments of the invention are the subject of claims 2 to 6 and 8 to 15, respectively.

[0011] The problem is solved according to claim 1 by a cage for limiting the radial movement of a bearing core in an elastic bushing. According to the invention, the cage has two cage segments, each cage segment comprising an annular section and a plurality of axial webs arranged on the annular section. The cage is characterized in that the two cage segments are designed to be connectable to one another via a snap-fit ​​connection.

[0012] With the aid of the cage according to the invention, the need for machining the core is eliminated. Furthermore, it is no longer necessary to rivet the cage halves to fix their mounting position on the core, since the secure fit of the cage halves to the core is now achieved by the clip connection according to the invention. The process steps customary in the prior art can therefore be omitted. Moreover, compared to previously known solutions, the cage exhibits an improved positive fit to the core.

[0013] According to the invention, the locking connection comprises at least one locking pair, each locking pair comprising a first locking element and a second locking element corresponding to the first locking element. The corresponding locking elements of each locking pair ensure that the two cage halves can first be slid onto the bearing and then joined together to form a common cage. In this way, after joining and clipping the cage halves, a limiting element is obtained that reliably restricts the radial and axial movements of the inner core in the elastic bushing.

[0014] According to a further development, the first locking element of at least one locking pair can be arranged on one of the axial webs of one of the two cage segments, and the corresponding second locking element of the same locking pair is arranged on one of the axial webs of the other cage segment. Thus, if the first locking element of a locking pair is arranged, for example, on an axial web of the first cage segment, then the second locking element of the same locking pair should be arranged on an axial web of the second cage segment. Advantageously, both cage segments each comprise at least one first locking element and at least one second locking element, so that the locking connection of a cage assembled always comprises at least two locking pairs. Preferably, the two cage segments of the cage are designed as identical parts; that is, they can have identical geometries, and in particular, they are mirror-symmetrical and / or rotationally symmetrical.This ensures that each cage segment can be interlocked with any other cage segment of the same geometry to form a complete cage. This reduces the manufacturing effort for the cages, as only one type of cage segment needs to be produced for each cage.

[0015] According to the invention, each first locking element comprises a locking hook and each second locking element comprises a locking tab, wherein each locking hook and each locking tab can be engaged to form a locking pair. In a further embodiment, each first locking element is a locking hook and each second locking element is a locking tab, wherein each locking hook and each locking tab can be engaged to form a locking pair. This ensures that the first locking element and the corresponding second locking element of each locking pair can be engaged particularly easily. The locking hook can be designed as a narrow, tapered projection at the end of the axial web, and the locking tab can be designed as a wide projection at the end of the axial web.The design of the locking tab as a wide projection ensures that even with minimal torsional play between the cage halves, the locking hooks always make full contact with the locking tabs. This allows for accurate calculation of the forces that can be absorbed in the locking connection.

[0016] According to a further development, each locking hook can be arranged on the outside of its respective axial rib, and each locking tab on the inside of its respective axial rib. In other words, the locking hooks and locking tabs of a locking pair project towards each other. The locking hooks are oriented radially outwards, and the locking tabs radially inwards. Furthermore, the axial ribs that have a locking hook are arranged radially further inwards on the annular section than the axial ribs that have a locking tab. For this purpose, the axial ribs with locking hooks can be attached to a projection that extends radially inwards from the annular section.When the cage halves are slid together, the inner axial ribs of one cage segment, which feature a locking hook, are guided past the outer axial ribs of the other cage segment, which feature a locking tab. Because the locking hook and locking tab of each pair are aligned with each other, they form a locking connection once the cage segments are fully slid together. This design of the clips ensures simple and secure locking or joining of the two cage halves.

[0017] According to a further development, the axial webs of each cage segment can be designed so that, during normal use of the cage, they extend axially towards the other cage segment. This design simplifies the assembly of the two cage segments into a single cage, as the cage segments only need to be pushed together from opposite directions along the central longitudinal axis of the bushing. The cage halves can be inserted into the core, particularly from the end faces of the core.

[0018] According to a further development, each cage segment may comprise at least two outer axial ribs arranged at the outer edge of the annular section, with each cage segment particularly comprising four outer axial ribs. The outer axial ribs preferably serve to be inserted, in particular in a form-fitting manner, into recesses provided for this purpose in the core. The recesses may, for example, be embedded in the circumferential surface of the core and extend there axially from end face to end face. This ensures precise positioning of the cage segments, and thus of the cage, on the core. The fixation of the cage segments on the core is influenced by the number of outer axial ribs, with optimal fixation being achieved with just four outer axial ribs per cage segment.By inserting the outer axial ribs into the axial recesses of the core, the cage segments can be advantageously pre-secured to the inner core during the assembly of the elastic bushing. In this way, slippage of the cage segments, for example in the circumferential direction of the core, can be efficiently minimized or even completely avoided.

[0019] The outer axial webs of the cage segments can have a length dimensioned such that a small gap forms between the ends of the outer axial webs of the first cage segment and the ends of the outer axial webs of the second cage segment when the two cage segments are locked together to form the cage – meaning the ends of the axial webs of the two cage segments just barely do not touch. However, it can also be designed so that the ends of the outer axial webs of the first cage segment abut the ends of the outer axial webs of the second cage segment when the two cage segments are locked together to form the cage. This increases the tensile stress on the locking connection.

[0020] According to a further development approach, the detent elements of the detent pairs can be formed on the inner axial webs of the cage segments. Advantageously, the detent connection of the cage segments is achieved by forming the detent elements of the connection at the ends of the inner axial webs. In such a case, there is a clear functional separation of the axial webs: while the outer axial webs perform the function of limiting the travel, the inner axial webs perform the detent function. Only the function of centering or geometric positioning can then be performed by both axial webs. This allows the axial webs to be optimized with regard to their respective functions.

[0021] According to a further development, each cage segment may comprise at least two inner axial webs, wherein the inner axial webs are each arranged on an inner edge of the annular section, and wherein each cage segment particularly comprises four inner axial webs. Consequently, the cage's locking connection should comprise at least two, preferably four, locking pairs. It has proven particularly advantageous if each cage segment comprises two inner axial webs with locking tabs and two inner axial webs with locking hooks. In each cage segment, the two inner axial webs with locking hooks may be arranged diametrically opposite each other on the annular section. Similarly, the inner axial webs with locking tabs of each cage segment may also be arranged diametrically opposite each other on the annular section.

[0022] According to a further development, the outer axial webs of the cage segments can be designed with a T-shaped cross-section, at least partially and approximately. This increases the stability of the outer axial webs, which is particularly advantageous for the travel limitation function for force transmission. The outer axial webs can be T-shaped in cross-section over their entire axial length, or only in a region close to the annular section. The latter configuration can be particularly advantageous if the ends of the outer webs have locking elements (in addition to or instead of the inner axial webs).

[0023] According to a further development, the annular sections of the cage segments can each have a circumferential shoulder at their outer edge. This circumferential shoulder at the outer edge of the annular sections ensures a direct transmission of radial forces when the annular section acts as a radial stop. In this case, a direct force flow from the outer sleeve, via the outer area of ​​an elastomer body or pad of the bushing, through the circumferential shoulder of the cage segment into the core is guaranteed. With an annular shoulder on the cage segment, the radial forces are distributed between this shoulder and the outer axial webs, thus reducing the overall load on the outer axial webs. This design results in a robust construction. Furthermore, the annular sections ensure a precise fit of the cage segments on the end faces of the bearing core.A corresponding core shoulder may be provided on the end faces of the core, into which the shoulder of the annular section engages. This prevents radial displacement or slippage of the cage segments, ensuring easy handling of the elastic bushing during the flanging or bending process of the outer sleeve's end sections. Furthermore, the two shoulders act as a stop for the cage when inserted into the inner core.

[0024] According to a further development, it can be provided that the annular sections of the cage segments each have at least one recess on their inner edge. The recess in the annular section can, for example, allow a suitably shaped fastening element to be passed through the bearing bushing.

[0025] According to a further aspect, the invention relates to a bushing comprising a cage according to the present disclosure, wherein the cage segments of the cage are connected to each other via a snap connection, and wherein the bushing also comprises a bearing core, an outer sleeve concentrically surrounding the bearing core and an elastomer body arranged between the outer sleeve and the bearing core.

[0026] The bushing according to the invention has a compact design and is also characterized by its simple and cost-effective assembly. Finally, the cage used, with its lockable cage segments, ensures that the caulking of the cage segments to the core can be omitted – which would otherwise have to be done before the outer sleeve is flared.

[0027] The outer sleeve can be made of a metallic material, such as aluminum. The core can also be made of a metallic material, for example, an extruded aluminum profile. In particular, the core can be an extruded profile with its cut edges perpendicular to its central longitudinal axis.

[0028] The elastomer body can be bonded, at least partially, to the outer sleeve and / or to the core, in particular by means of a vulcanization process. Specifically, the bond between the elastomer body and the core, or between the elastomer body and the outer sleeve, is achieved through the use of suitable adhesives.

[0029] According to a further development, a thin elastomer layer or track can be provided between the annular shoulder of the cage segment and the core, wherein the elastomer layer is formed in particular by the elastomer body and bears against the inside of the outer sleeve. This thin elastomer layer, bearing against the inside of the outer sleeve, is preferably bonded to the outer sleeve and results in a smooth change in stiffness upon contact with the annular sections of the cages, which act as radial stops.

[0030] According to a further development, the cage segments of the cage can be spaced apart axially and / or radially from the bent end region of the outer sleeve. As a result of the axial and / or radial spacing of the cage from the two end regions of the sleeve, the bushing according to the invention has a limited, clearly defined free movement in the radial and / or axial direction. This eliminates the need for separate parts that would otherwise have to perform this function. Consequently, the bearing according to the invention represents a more cost-effective solution than previous solutions.

[0031] According to a further development, it can be provided that the cage is arranged, at least in sections, between the outer sleeve and the bearing core. This ensures that the radial movement of the core within the outer sleeve is limited.

[0032] According to a further development, the annular section of one of the cage segments can be arranged on a first end face of the bearing core, and the annular section of the other cage segment can be arranged on a second end face of the bearing core, with the first and second end faces of the bearing core facing each other. Because the annular sections of the cage segments, which act as radial stops, are positioned opposite each other on both end faces of the core, the stop forces transmitted via these stops are distributed along two load paths. This minimizes or even completely prevents the introduction of moment forces into the core due to radial forces, thus enabling a more robust mounting of the bearing.

[0033] According to a further development, a receiving opening for a fastening element can be incorporated into the bearing core, with the receiving opening extending from the first end face of the bearing core to the second end face. The fastening element can be, for example, a flat bar or similar, which is preferably pressed into the receiving opening and can be attached to the vehicle body, e.g., by means of screws or bolts. Pressing in the fastening element ensures that the bushing does not need to be screwed through longitudinally, but can instead be screwed to the body from below, thus optimizing assembly. "From below" here refers to the finished vehicle.

[0034] According to a further development, the bearing core can be provided with at least two, preferably four, through-openings arranged parallel to the receiving opening, each through-opening extending from the first end face of the bearing core to the second end face. The through-openings serve to receive the axial webs of the cage segments, preferably the inner axial webs. In this way, the axial webs of the cage can be easily accommodated in the core of the bushing. When the cage segments are pushed together, the webs are inserted into the through-openings of the core and locked in place. The through-openings thus enable easy positioning of the cage segments on the core.It can also be provided that each through-opening includes a clearance that allows the axial webs some play – the clearances of the through-openings can therefore be designed with such a large cross-section that they do not fit the inserted axial webs in a form-fitting manner, but rather that the axial webs are spaced away from the core in all directions. This design makes it possible to use different cage segments with differently arranged axial webs without having to replace the bearing core.

[0035] According to a further development, the inner axial webs of the cage segments can be inserted into the through-holes in the core. This ensures that the snap-fit ​​connection is housed within the core, provided the snap-fit ​​elements are arranged on the inner axial webs of the cage segments. The core thus provides impact protection for the clip connection and prevents the connection from unintentionally loosening.

[0036] According to a further development, it can be provided that the bearing core has a plurality of axially extending recesses on its outer surface, wherein the bearing core has in particular four recesses on its outer surface, each of which is arranged at an angular distance of substantially 90° to each other and which extends from the first end face of the core to the second end face of the core.

[0037] According to a further development, the outer axial webs of the cage segments can be inserted into the recesses of the bearing core by means of a positive, force-fit, and / or friction-fit connection. The outer axial webs are primarily inserted by positive fit in the circumferential direction. The recesses in the outer surface of the core allow the cage segments to be pre-fixed to the core during bushing assembly, thus preventing them from slipping. Furthermore, such a bearing has a compact design.

[0038] According to a further development, it can be provided that between the cage and the elastomer body, and in particular between the annular sections of the cage and the elastomer body, there is a clearance on the outer circumference in the axial and / or radial direction. This allows for progressive limitation, since during axial and / or radial movement, the cage first passes through the clearance before colliding with the elastomer body and experiencing damping according to the thickness of the elastomer body and its material properties. Thus, the vehicle's handling can be adjusted not only via the clearance in the axial and radial directions, but also with the help of the elastomer body located between the cage and the outer sleeve.

[0039] The free space between the ring-shaped sections of the cage and the elastomer body allows for a progressive radial characteristic curve of the bearing. During radial movement, the core initially exerts a force against the stiffness of the elastomer body between the core and the outer sleeve. After overcoming this radial clearance, the cage contacts the elastomer track that surrounds the inner surface of the outer sleeve, where it experiences a further opposing force during continued radial deflection. This results in a two-stage, progressive radial stiffness characteristic. Consequently, the driving behavior can also be adjusted using the elastomer body located between the core and the outer sleeve.

[0040] Further features, details and advantages of the invention will become apparent from the wording of the claims and from the following description of exemplary embodiments with reference to the drawings. Figures

[0041] They show: Fig. 1 a first embodiment of the cage according to the invention for a bearing bushing; Fig. 2 a cage segment for the cage; Fig. 3a,b a cross-section through a bearing bushing according to the invention; Fig. 4a,b a half section through the bearing bushing; and Fig. 5 an exploded view of the bearing bushing.

[0042] In Fig. Figure 1 shows a cage 1 according to the invention for limiting the radial movement of a bearing core 2 in an elastic bushing 3. The cage 1 is constructed from two cage segments 4a,b, each cage segment 4a,b comprising an annular section 5 and a plurality of axial webs 6 arranged on the annular section 5. The two cage segments 4a,b are connected to each other via a snap-fit ​​connection 7, thereby forming the cage 1.

[0043] The outer axial webs 14 of the cage segments 4a,b advantageously have a length such that the ends of the outer axial webs 14 of the first cage segment 4a abut the ends of the outer axial webs 14 of the second cage segment 4b when the two cage segments 4a,b are locked together. This increases the tensile stress on the locking connection 7.

[0044] A single cage segment 4a,b of cage 1 made of Fig. 1 is in Fig. Figure 2 shows that the cage segment 4a,b has a total of eight axial webs 6 on its annular section 5, which extend in the axial direction A and can be subdivided into four outer axial webs 14 and four inner axial webs 16. The outer axial webs 14 are arranged at the outer edge 15 of the annular section 5 and are evenly distributed in the circumferential direction U, i.e., they are spaced apart from each other by an angular distance of approximately 90°. The inner axial webs 16 are located at the inner edge 17 of the annular section 5, however, they are arranged according to the diagram in Figure 2. Fig. In the embodiment shown in Figure 2, the circumferential U is not evenly distributed along the inner edge 17. Rather, the inner axial webs 16 are arranged in pairs in the western direction, with the two pairs being almost diametrically opposed to each other.

[0045] The four inner axial webs 16 have locking elements 8, 9 at their ends, each pair of inner axial webs 16 comprising one axial web 16 with a first locking element 8 and one axial web 16 with a second locking element 9. As in Fig. As shown in Figure 2, the first locking element 8 can be a locking hook 10 and the second locking element 9 can be a locking tab 11. The locking hooks 10 are each arranged on the outer sides 12 of the inner axial web 16, where the outer side 12 is understood to be the side of the axial webs 6 that points outwards in the radial direction R. The locking hooks 11 are arranged accordingly on the inner sides 11 of the inner axial webs 16, i.e., on the sides that point inwards in the radial direction R.

[0046] The outer axial webs 16 have an approximately T-shaped geometry in cross-section. In the example shown, they do not include any locking elements 8, 9 and therefore do not serve to form the locking connection 7.

[0047] According to the example from Fig. 2 The locking hook 10 is directed outwards in the radial direction R. The locking tab 11 projects inwards in the radial direction R. In addition, the axial webs 6 with locking hook 10 have a projection 30 extending inwards in the radial direction R in the area of ​​connection with the annular section 5 (in Fig. (1 shown). In addition, the axial webs 6 with locking tab 11 can be recessed into the inner edge section 17 in the area of ​​the connection with the annular section 5. This ensures that the locking hook-bearing axial webs 16 are arranged somewhat further inwards in the radial direction R on the annular section 5 than the locking tab-bearing axial webs 16. In this way, the inner axial webs 16 of the two cage segments 4a,b can be guided past each other when slid together, whereby the inner axial webs 16 of one cage segment 4a,b, which have a locking hook 10, are slid past the slightly outer axial webs 16 of the other cage segment 4a,b, which have a locking tab 11. After the cage segments 4a,b are completely slid together, the locking hook 10 and locking tab 11 of each locking pair form a locking connection 7.

[0048] Fig. 3a and Fig. Figure 3b shows a diagonal cross-section through an elastic bushing 3 along the line S1-S2. The bushing 3 has a cage 1 and serves to receive a fastening element 100, which in the example shown is a flat bar. Besides the cage 1, it comprises a bearing core 2, an outer sleeve 18 concentrically surrounding the bearing core 2, and an elastomeric body 19 arranged between the outer sleeve 18 and the bearing core 2. The cage 1 is composed of two cage halves 4a,b, with the annular sections 5 of the cage halves 4a,b bearing against the first end face 20 and the second end face 21 of the bearing core 2, respectively. Fig. As also shown in Figure 3b, the inner axial webs 16 of the cage segments 4a,b can lie in the through-openings 23 of the core 2 and form the snap-fit ​​connection 7 there. The outer axial webs 14 are positively engaged in recesses 26 provided for this purpose in the core 2.

[0049] In Fig. 4a and Fig. Figure 4b shows a half-section through the bearing bushing 3 along the line S3-S4. Only the half of the bearing bushing 3 lying above the longitudinal axis is shown. The inner axial webs 16 of the cage segments 4a,b are inserted into the through-openings 23 of the core 2 and connected there via the detent connection 7 between detent hook 10 and detent tab 11.

[0050] The annular sections 5 of the cage segments 4a,b each have a circumferential shoulder 24 at their outer edges 15. The shoulder 24 ensures good transmission of radial forces and a precise fit of the cage segments 4a,b on the end faces 20, 21 of the bushing core 2. This prevents radial slippage of the cage segments 4a,b.

[0051] In Fig. Figure 4b also shows the elastomer body 19, which is arranged between the outer sleeve 18 and the core 2. The elastomer body 19 can be positioned against the inside of the outer sleeve in such a way that it partially covers it in the form of a thin elastomer layer 29. This thin elastomer layer 29, which is bonded to the inside of the outer sleeve 18, ensures a smooth change in stiffness upon contact with the annular section 5 of the cages 4a,b, which acts as a radial stop.

[0052] The outer sleeve 18 also comprises radially inwardly bent end regions 28 on each of its axial end faces, the end regions 28 preferably being produced by flanging. The bent end regions 29 of the outer sleeve are formed according to the Fig. In the embodiment shown in Figure 4, the cage 1 is also covered by the elastomer layer 29. The bent ends 28, or rather the elastomer layer 29 located there, serve as a stop for the core 2 in the axial direction A, in order to smoothly implement the stiffness transition described in the previous paragraph. Due to the elastomer layer located between the cage segments 4a,b and the outer sleeve 15, or rather the end regions 28, a progressive limit can be set when the cage 1 abuts the outer sleeve 15. Depending on the thickness of the elastomer body 19 or the elastomer layer 29, and depending on the material properties, different stiffness transitions can be achieved.

[0053] Furthermore, according to Fig. 4b A clearance 27 is formed between the annular sections 5 of the cage segments 4a,b and the end regions 28 of the outer sleeve. The size of the clearances 27 can be chosen almost freely. The clearances 27 allow movement of the bearing core 2 within the outer sleeve 18 in the radial direction R and / or the axial direction A.

[0054] According to the in Fig. In the embodiment shown in 4b, the inner axial webs 16 are not positively engaged with the through-openings 23 of the core 2. Instead, they are spaced apart from the inner walls of the through-openings 23.

[0055] Fig. Figure 5 shows an exploded view of the bearing bushing 3, with the individual parts of the bushing 3 separated along the longitudinal axis Z. The flat bar 100 is connected by means of its Fig. The five openings shown are connected to the vehicle body by means of screws not shown. The bushing 3 was previously pressed into a receiving eye on the axle.

[0056] As in Fig. As shown in Figure 5, the core 2 preferably comprises a receiving opening 22 for receiving the fastening element 100. The receiving opening 22 extends from the first end face 20 of the bearing core 2 to the second end face 21 of the bearing core 2 (the latter is in Fig. (5 not shown). The fastening element 100 is a flat bar in the example shown. To allow the fastening element 100 to pass through the bushing 3, the annular sections 5 of the cage segments 4a,b each have 15 recesses 25 at their inner edges.

[0057] The core 2 also has four through-openings 23, wherein the four through-openings 23 are subdivided into two pairs of through-openings 23 by the receiving opening 22. The core 2 further has four recesses 26 extending in axial direction A from the first end face 21 to the second end face 21. The recesses 26 ensure a positive-locking reception, at least in the circumferential direction, of the outer axial webs 14 of the cage segments 4a,b. Reference symbol list 1 cage 2 Bearing core 3 sockets 4a,b Cage segment 5 Ring-shaped section 6 Axial web 7 Resting pair 8 First locking element 9 Second locking element 10 locking hooks 11 Rastlatsche 12 Outer side of the axial web 13 Inside of the axial web 14 Outer axial web 15 Outer edge 16 Inner axial web 17 Inner edge 18 Outer sleeve 19 elastomer bodies 20 First front 21 Second front 22 Intake opening 23 Passage opening Paragraph 24 25 recess 26 Exclusion 27 Free space 28 Bent End Sections 29 Elastomer layer 30 lead 100 fastening elements A Axial direction R Radial direction Z Central longitudinal axis S1-4 Reference points of the sectional views

Claims

[1] Cage (1) for limiting the radial movement of a bearing core (2) in an elastic bushing (3), comprising two cage segments (4a,b), each cage segment (4a,b) comprising an annular section (5) and a plurality of axial webs (6) arranged on the annular section (5), the two cage segments (4a,b) of the cage (1) being designed to be connectable to one another via a snap connection, the snap connection comprising at least one snap pair (7), each snap pair (7) comprising a first snap element (8) and a second snap element (9) corresponding to the first snap element (8), each first snap element (8) comprising a snap hook (10) and each second snap element (9) comprising a snap tab (11), the snap hook (10) and the snap tab (11) being able to be snapped to one another. [2] Cage (1) according to claim 1, characterized by, that each locking hook (10) is arranged on an outside (12) of the axial web (6), and that each locking tab (11) is arranged on an inside (13) of the axial webs (6). [3] Cage (1) according to any one of the preceding claims, characterized by , that each cage segment (4a,b) comprises at least two outer axial webs (14) which are each arranged on an outer edge (15) of the annular section (5), wherein each cage segment (4a,b) in particular comprises four outer axial webs (14). [4] Cage (1) according to any one of the preceding claims, characterized by , that each cage segment (4a,b) comprises at least two inner axial webs (16) which are each arranged on an inner edge (15) of the annular section (5), wherein each cage segment (4a,b) in particular comprises four inner axial webs (16). [5] Cage (1) according to claim 4, characterized by, that the locking elements (8,9) of the at least one locking pair (7) are each formed on the inner axial webs (16) of the cage segments (4a,b). [6] Cage (1) according to any one of the preceding claims, characterized by , that the ring-shaped sections (5) of the cage segments (4a,b) each have a circumferential step (24) at their outer edge (15). [7] Bushing (3) for supporting a fastening element (100), comprising - either a cage (1) for limiting the radial movement of a bearing core (2) in an elastic bushing (3), comprising two cage segments (4a,b), each cage segment (4a,b) comprising an annular section (5) and a plurality of axial webs (6) arranged on the annular section (5), characterized by, that the two cage segments (4a,b) of the cage (1) are designed to be connectable to each other via a snap connection, wherein the cage segments (4a,b) of the cage (1) are connected to each other via a snap connection, and wherein the bushing (3) also comprises a bearing core (2), an outer sleeve (18) concentrically surrounding the bearing core (2) and an elastomer body (19) arranged between the outer sleeve (18) and the bearing core (2), - or a cage (1) according to one of the preceding claims, wherein the cage segments (4a,b) of the cage (1) are connected to each other via the snap connection, and wherein the bushing (3) further comprises a bearing core (2), an outer sleeve (18) concentrically surrounding the bearing core (2) and an elastomer body (19) arranged between the outer sleeve (18) and the bearing core (2). [8] Bushing (3) according to claim 7, characterized by, that the cage segments (4a,b) of the cage (1) are each spaced apart in the axial direction from a bent end region (28) of the outer sleeve (18). [9] Bushing (3) according to one of claims 7 or 8, characterized by that the cage (1) is arranged at least sectionally between the outer sleeve (18) and the bearing core (2). [10] Bushing (3) according to any one of claims 7 to 9, characterized by , that a receiving opening (22) for receiving a fastening means (100) is provided in the bearing core (2), wherein the receiving opening (22) extends from a first end face (20) of the bearing core (2) to a second end face (21) of the bearing core (2). [11] Bushing (3) according to claim 10, characterized bythat the bearing core (2) has at least two, preferably four, through openings (23) arranged parallel to the receiving opening (22), wherein the through openings (23) each extend from the first end face (20) of the bearing core (2) to the second end face (21) of the bearing core (2). [12] Bushing (3) according to claim 11, characterized by , that the inner axial webs (16) of the cage segments (4a,b) are inserted into the through openings (23). [13] Bushing (3) according to any one of claims 7 to 12, characterized by , that the bearing core (2) has a plurality of recesses (26) extending in the axial direction (A) on its outer surface, wherein the bearing core (2) has in particular four recesses (26) on its outer surface, each of which is arranged at an angular distance of substantially 90° to each other. [14] Bushing (3) according to claim 13, characterized by, that the outer axial webs (14) of the cage segments (4a,b) are inserted into the recesses (26) of the bearing core (2) in at least one circumferential direction (U) in a form-fit and / or force-fit and / or friction-fit manner. [15] Bushing (3) according to any one of claims 7 to 14, characterized by , that between the annular sections (5) of the cage (1) and the elastomer body (19) a free space (27) is formed on the outer circumference with respect to the annular section (5) of the cage (1).

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