Hydraulic damping bearing with rib and rib interruption region

Abstract

The invention relates to a hydraulic damping bearing having ribs and rib interruption regions, which are penetrated by a central longitudinal axis (Z), comprising a cage (20), an outer sleeve (30) and an axial fastening means (40) for axially fastening the outer sleeve (30) to the cage (20), the axial fastening means (40) comprising an outer circumferential rib (21) on the cage (20) and an inner circumferential rib (31) on the outer sleeve (30), the cage (20) and the outer sleeve (30) each extend in the circumferential direction (U) and can be interlocked, the cage (20) forms at least two outer rib interruption regions (22) on the outer circumferential side, and the outer sleeve (30) forms at least two inner rib interruption regions (32) such that the outer circumferential ribs (21) can be adjusted by means of the inner rib interruption regions (32) when an axial relative movement is carried out along the central longitudinal axis (Z) between the cage (20) and the outer sleeve (30), the inner peripheral rib (31) is adjustable by the outer rib interruption region (22).

Description

Technical Field

[0001] The present invention relates to a hydraulic damping bearing. Background Art

[0002] Hydraulic bushings are known. They include a cage usually embedded in an elastomer and an outer sleeve fixed to the cage and axially locked.

[0003] In practice, it is known to push a metal sleeve onto the cage and then calibrate it. During this calibration process, the diameter of the sleeve decreases. The radial flange of the cage thus forms an axial undercut. Alternatively, the metal sleeve can grab the cage from the outside by locally calibrating its end region and generate an axial undercut in this way. Therefore, the outer sleeve is prevented from sliding axially downwards. Using a forming process to generate an axial undercut requires the material of the outer sleeve to have the ability of plastic deformation. Therefore, this fixing method cannot be used for a plastic outer sleeve.

[0004] Alternatively, a plastic outer sleeve is known, which is fixed to a plastic cage by a welding process to prevent axial downward sliding. For example, EP 2522878 B1 shows such a structure. However, welding the two components together first requires a large investment in suitable welding equipment and very careful monitoring of the welding quality.

[0005] In addition, in practice, it is known to fix a plastic outer sleeve and a plastic cage with screws. The thread forms an axial fixation, but the thread itself does not create a seal between the plastic outer sleeve and the plastic cage, so an additional annular seal is required. However, in order to be able to transmit a sufficiently high axial force, the threads must rotate several turns relative to each other so as to mesh widely with each other. Therefore, the outer sleeve must be rotated / tightened several turns relative to the cage. This also puts great pressure on the seal. In addition, tightening requires a high torque, which needs to be transmitted to the relatively thin outer sleeve. Summary of the Invention

[0006] Therefore, the object of the present invention is to create a hydraulic damping bearing that overcomes the above problems.

[0007] According to the present invention, there is provided a hydraulic damping bearing penetrated by a central longitudinal axis, comprising a cage, an outer sleeve and an axial fixing mechanism for axially fixing the outer sleeve to the cage, wherein the axial fixing mechanism includes an outer peripheral rib on the cage and an inner peripheral rib on the outer sleeve, which respectively extend circumferentially and can mesh with each other, wherein the cage forms at least two outer rib interruption regions on the outer peripheral side, and the outer sleeve forms at least two inner rib interruption regions, such that in the axial relative movement of the cage and the outer sleeve along the central longitudinal axis, the outer peripheral rib can be adjusted through the inner rib interruption region, and the inner peripheral rib can be adjusted through the outer rib interruption region.

[0008] Accordingly, the present invention provides regions through which the ribs of the cage and the corresponding other part of the outer sleeve can slide axially along the central longitudinal axis. These interrupted regions allow the ribs of one part to slide axially past the ribs of the other part. Thus, the outer sleeve can be easily pushed onto the cage during installation. The interrupted regions serve as and are designed as axially extending advancing regions. After the axial relative movement between the cage and the outer sleeve, the two parts can rotate relative to each other about the central longitudinal axis. Thereby, the inner circumferential ribs and the outer circumferential ribs can engage with each other and fit against each other to axially fix the outer sleeve to the cage.

[0009] The ribs are provided on the respective circumferential surfaces of the cage and the outer sleeve and project radially therefrom. A groove (Tal) is formed between axially adjacent ribs, which groove follows the ribs circumferentially. The ribs of the cage and the other part of the outer sleeve can engage into the groove. The interrupted regions can be rib-free, and / or formed by the respective cylindrical circumferential surfaces of the cage and the outer sleeve, and / or defined circumferentially by the ends of the ribs. The groove can open towards the respective interrupted region. It is conceivable that the circumferences of all the ribs between circumferentially adjacent interrupted regions are the same. It is conceivable that axially adjacent ribs are axially aligned with each other at one end, preferably at both ends. This can result in axially extending advancing regions.

[0010] The bearing further includes an elastomer and fluid-filled or fluid-fillable chambers, which can be defined by expandable elastomeric membranes. To reinforce the expandable elastomeric membranes, the cage is embedded in the elastomer. To prevent leakage of the fluid-filled chambers, they are sealed to prevent contact with the surrounding environment. For this purpose, the elastomeric membranes can be provided with sealants located on the cage.

[0011] Accordingly, the present invention achieves the axial fixation of the outer sleeve in a surprisingly simple manner without shaping it or rotating it several times.

[0012] According to a possible refinement of the hydraulic damping bearing, at least one sealant can be provided between the cage and the outer sleeve. The axial relative movement between the cage and the outer sleeve and / or the circumferential relative movement between the cage and the outer sleeve can take place against the force of the sealant and shear and / or compress it. The circumferential positions of the cage and the outer sleeve relative to each other can be fixed by the compressed and / or sheared sealant. Each ring of the cage can carry the sealant, preferably a sealing ring.

[0013] According to a possible refinement of the hydraulic damping bearing, axially spaced ribs (e.g., outer circumferential ribs and / or inner circumferential ribs), which are provided circumferentially between two adjacent interrupted regions, can define a rib block.

[0014] According to an improvement of the hydraulic damping bearing, the outer rib interruption regions and the inner rib interruption regions can be circumferentially defined by their respective ribs and / or extend parallel to the central longitudinal axis respectively. Thus, when the ribs are located in the interruption regions of the other parts of the cage and the outer sleeve respectively, they can easily engage between the ribs of the other parts of the cage and the outer sleeve from the axial movement through the rotational movement. This creates a simple transition. The advantage of the axially extending interruption regions is that the axial relative movement between the cage and the outer sleeve can be without circumferential movement. This greatly simplifies the pre-assembly, and the frictional load of the sealant during the axial relative movement is small and only subjected to a small shear force due to tilting.

[0015] According to an improvement of the hydraulic damping bearing, the cage can form two, three or four outer rib interruption regions, and the outer sleeve correspondingly forms two, three or four inner rib interruption regions. The number of interruption regions can depend on the diameter of the cage or the outer sleeve. An increase in diameter while the number of interruption regions remains constant results in a longer adjustment stroke required in the relative rotational movement between the cage and the outer sleeve. Therefore, the outer diameter of the outer peripheral rib region of the cage can advantageously be associated with the number of outer rib interruption regions, and the same applies to the outer sleeve.

[0016] According to a possible improvement of the hydraulic damping bearing, the outer rib interruption regions can be equidistantly arranged circumferentially with respect to each other, and the inner rib interruption regions can be equidistantly arranged circumferentially with respect to each other. Thus, the cage and the outer sleeve can be pre-assembled with respect to each other in different directions because there can be multiple directions. This simplifies the assembly process.

[0017] According to an improvement of the hydraulic damping bearing, at least two, preferably three, more preferably four outer peripheral ribs can be respectively arranged between adjacent outer rib interruption regions, and / or at least two, preferably three, more preferably four inner peripheral ribs can be respectively arranged between adjacent inner rib interruption regions. The specified number can indicate the exact number, so it is neither less nor more. With the increase in the number of ribs, the axial force that can be transmitted through the press fit between the outer sleeve and the mounting hole can also increase before reaching the yield limit of the ribs.

[0018] According to an improvement of the hydraulic damping bearing, the outer peripheral ribs and the inner peripheral ribs can extend with a zero pitch circumferentially respectively or form threads respectively. The ribs extending with a zero pitch (zero pitch) circumferentially have no pitch. Due to the lack of this pitch, they achieve a very large self-locking to prevent loosening, but the rotation of the cage and the outer sleeve becomes difficult. On the contrary, in the embodiment as a thread, the ribs have the pitch characteristic of a thread. In this case, although the self-locking is smaller, the rotation of the cage and the outer sleeve becomes easier.

[0019] According to a possible improvement of the hydraulic damping bearing, the number of thread turns of the thread can be one turn respectively, or equal to the number of the outer rib interruption regions or the inner rib interruption regions. In the first embodiment, the threads are single-start threads respectively. Thus, the threads can have a relatively small pitch respectively. This is particularly suitable for achieving both the easy rotation of the cage and the outer sleeve and the very high self-locking of the threads. In addition, in the case of single-start threads, there is a negligible tolerance-related connection between the axial position and the rotational position of the cage and the outer sleeve. Multi-start threads can simplify the assembly because multi-start threads can have multiple entrances, so the cage and the outer sleeve can be pre-assembled with each other in different directions because there can be multiple directions. The number of entrances can be equal to the number of the outer rib interruption regions or the inner rib interruption regions.

[0020] According to a possible improvement of the hydraulic damping bearing, the outer rib interruption region and / or the inner rib interruption region can be a milling region. Such a region can be identified by typical milling surface features. First, it can be imagined to form ribs or threads that are completely closed in the circumferential direction, and then mill the defined regions of the ribs or threads to form the interruption regions. Thereby, complex-shaped and costly manufacturing tools, such as injection molds with complex sliders, can be avoided, and / or the sliders required for forming other regions do not have to be additionally coordinated with the sliders of the ribs to avoid geometric conflicts.

[0021] According to an improvement of the hydraulic damping bearing, at least one outer peripheral rib, preferably only one outer peripheral rib, can be formed as an anti-misassembly outer rib that extends circumferentially beyond the axially adjacent outer peripheral ribs, and at least one inner peripheral rib, preferably only one inner peripheral rib, can be formed as an anti-misassembly inner rib that is recessed posteriorly circumferentially relative to the axially adjacent inner peripheral ribs. Additionally or alternatively, the opposite situation can be imagined, where at least one outer peripheral rib, preferably only one outer peripheral rib, can be formed as an anti-misassembly outer rib that is recessed posteriorly circumferentially relative to the axially adjacent outer peripheral ribs, and where at least one inner peripheral rib, preferably only one inner peripheral rib, can be formed as an anti-misassembly inner rib that extends circumferentially beyond the axially adjacent inner peripheral ribs.

[0022] These two anti-misassembly ribs together form an axial device to prevent misassembly. Then, the cage and the outer sleeve can only be axially adjusted relative to each other in one direction. This is because the protruding or longer ribs prevent other ribs except the recessed or shorter ribs from sliding axially past or at least sliding to the same height.

[0023] It can be imagined that all rib blocks except the rib blocks with anti-misassembly ribs include the same ribs. This especially applies to their circumferences, lead-in chamfers, and axial alignments.

[0024] According to a possible improvement of the hydraulic damping bearing, the circumferences of all ribs between circumferentially adjacent interruption regions, except for the anti-misassembly ribs, can be the same. It is conceivable that axially adjacent ribs are aligned with each other axially at one end, preferably at both ends, except for the anti-misassembly ribs.

[0025] According to an improvement of the hydraulic damping bearing, the cage or the outer sleeve can have an anti-misassembly rotation direction stopper, and the ribs of the other respective part in the cage and the outer sleeve can abut against the stopper circumferentially. This can prevent the cage and the outer sleeve from rotating in the wrong circumferential direction. The anti-misassembly rotation direction stopper forms a circumferential device to prevent incorrect assembly. The anti-misassembly rotation direction stopper can be a wall. Thus, together with the anti-misassembly ribs, a multi-stage anti-misassembly device can be achieved, because first, the anti-misassembly ribs are used for the correct axial direction during the axial relative movement between the cage and the outer sleeve, and then, the anti-misassembly rotation direction stopper is used for the correct rotation direction during the circumferential relative movement between the cage and the outer sleeve.

[0026] According to a possible improvement of the hydraulic damping bearing, the cage or the outer sleeve can have an over-rotation prevention device, and the ribs of the other respective part in the cage and the outer sleeve can contact the device circumferentially. This can prevent the cage and the outer sleeve from over-rotating in the correct circumferential direction. The over-rotation prevention device can be a ramp structure extending radially. The over-rotation prevention device forms a circumferential device to prevent incorrect assembly. Thus, together with the anti-misassembly ribs and / or the anti-misassembly rotation direction stopper, a multi-stage anti-misassembly device can be achieved.

[0027] According to a possible improvement of the hydraulic damping bearing, the cage or the outer sleeve can have an axial bridge, which can form an anti-misassembly rotation direction stopper in one circumferential direction and / or can form an over-rotation prevention device in its opposite circumferential direction. Thus, the axial bridge can be multifunctional.

[0028] According to an improvement of the hydraulic damping bearing, one of the cage and the outer sleeve can have at least one engaging groove, and the other respective one of the cage and the outer sleeve can have at least one corresponding engaging flange. The engaging groove and the engaging flange can correspond to each other. The engaging groove and the engaging flange can form a rotational fixing mechanism with each other. For this purpose, the engaging flange can be engaged into the engaging groove to prevent the cage and the outer sleeve from loosening circumferentially accidentally during the intended operation of the bearing. It is conceivable that the engaging flange is engaged into the engaging groove by a rotational movement during pre-assembly or assembly of the outer sleeve and the cage. It is also conceivable that the flange is engaged only due to the calibration of the bearing when the bearing is pressed into, for example, a mounting hole, and the engagement formed before pressing, preferably a slight engagement, is enhanced and / or further prevented from slipping out by pressing. Advantageously, at least one engaging groove is provided on the circumferential rib surface of the inner circumferential rib or the outer circumferential rib.

[0029] According to an improvement of the hydraulic damping bearing, the outer peripheral rib and / or the inner peripheral rib can form an inlet inclined surface at one end or both ends respectively (only). The inlet inclined surface is used to guide the rib of one component of the cage and the outer sleeve into the groove between the ribs of the other component of the cage and the outer sleeve. During the circumferential relative movement between the cage and the outer sleeve, the inlet inclined surfaces slide against each other. Thereby, an axial relative movement also occurs between the cage and the outer sleeve. This is at least to a small extent the case. By the interaction of the circumferential relative movement and the inlet inclined surface, a very high retaining force can be applied. This especially applies to ribs without pitch. The inlet inclined surface can have a pitch relative to the central longitudinal axis.

[0030] It can be imagined that if the inlet inclined surface is provided only at one end, the circumferentially opposite sides of the respective ribs form rib stoppers respectively. This can also prevent the cage and the outer sleeve from rotating in the wrong circumferential direction. The rib stopper of the outer peripheral rib can abut against the rib stopper of the inner peripheral rib to prevent rotation.

[0031] If the inlet inclined surface exists only at one end, the respective inlet inclined surfaces can be positioned such that the inlet inclined surface of the rib of one component of the cage and the outer sleeve can slide on the inlet inclined surface of the rib of the other component of the cage and the outer sleeve. Observed longitudinally, the inlet inclined surface can extend obliquely relative to the central longitudinal axis. It can be imagined that the anti-misalignment inner rib and / or the anti-misalignment outer rib have an inlet inclined surface only at one end.

[0032] According to a possible improvement of the hydraulic damping bearing, the cage can be a casting, such as a plastic injection molding or an aluminum die casting. It can be made of plastic material, preferably made of thermoplastic, and / or the outer sleeve can be made of plastic material, preferably made of thermoplastic. The present invention enables the outer sleeve to be axially fixed without deformation. Therefore, plastic material can now also be used for the outer sleeve.

[0033] According to an improvement of the hydraulic damping bearing, the length of the outer rib interruption region in the circumferential direction can be at least 1 mm longer, preferably at least 2 mm longer than the length of the inner peripheral rib in the circumferential direction between adjacent inner rib interruption regions. In addition, the length of the inner rib interruption region in the circumferential direction can be at least 1 mm longer, preferably at least 2 mm longer than the length of the outer peripheral rib in the circumferential direction (U). It can be imagined that the interruption region is at most 5 mm longer than the corresponding rib in the circumferential direction.

[0034] It can be imagined that the inner peripheral ribs and the outer peripheral ribs are designed such that when they are located in the corresponding interrupted regions of the cage and the other part of the outer sleeve, they can form a radial clearance of at least 1 mm, preferably at least 2 mm. It can be imagined that the maximum radial clearance is 5 mm. Through this clearance, the cage and the outer sleeve can be reliably pushed axially into each other. A smaller clearance may require too high a positioning accuracy during pre-assembly; however, too large a clearance may reduce the axial fixing surface of the ribs, thereby reducing the maximum axial force that can be achieved.

[0035] According to a possible improvement of the hydraulic damping bearing, the cage can have two rings which are connected to each other by at least one bridge, wherein the outer peripheral ribs and the interrupted regions of the outer ribs are formed only on one ring, preferably integrally, i.e., formed by the ring. If both rings are provided with outer peripheral ribs and interrupted regions of the outer ribs, the corresponding inner rib pairs on the inner peripheral surface of the outer sleeve must pass through most of the core during pre-assembly or assembly of the outer sleeve. For this purpose, for example, it is also necessary to provide a suitable clearance in the region between the rings. In this case, it is impossible or only possible with additional effort to axially place ring support elements, such as channel half-shells or other inserts, between the rings such that they together with the outer sleeve form a fluid channel for the hydraulic function of the hydraulic damping bearing. Alternatively, the inner surface of the outer sleeve must be stepped, that is, the rings provided with ribs must have different diameters so that when the outer sleeve is pushed on, the ribs on the inner side of the outer sleeve do not collide with the region between the ribs. In this case, the bearing must maintain this diameter in its installation space at least in the region of its larger-diameter ring, which tends to result in a larger overall bearing.

[0036] According to a possible improvement of the hydraulic damping bearing, the rib blocks of the outer peripheral ribs and / or the inner peripheral ribs, preferably each rib block of the outer peripheral ribs and / or the inner peripheral ribs, can extend circumferentially by at most 1 / 4 of the bearing circumference. This reduces the shear load and frictional wear on the sealant when the cage and the outer sleeve rotate.

[0037] According to a possible improvement of the hydraulic damping bearing, the rib blocks of the outer peripheral ribs and / or the inner peripheral ribs, preferably each rib block of the outer peripheral ribs and / or the inner peripheral ribs, can have a maximum developed length of 50 mm, preferably a maximum of 30 mm. This reduces the shear load and frictional wear on the sealant when the cage and the outer sleeve rotate.

[0038] According to a possible improvement of the hydraulic damping bearing, the cage can carry elastomeric axial stops. The axial stops can extend axially and / or act axially. The axial stops can be interrupted circumferentially, at least on one axial end face of the cage. They are used for buffering when contacting or being contacted by components outside the bearing. The axial stops can be formed at one or both axial ends of the cage. It is conceivable that the elastomer forms the axial stops.

[0039] According to a possible improvement of the hydraulic damping bearing, the rib blocks of the outer peripheral ribs, preferably all rib blocks of the outer peripheral ribs, can be axially aligned with their respective elastomeric axial stops, preferably arranged at their axial centers. This helps to improve the force flow in the cage during buffering and prevent the flow of deflection forces that may cause damage to the cage. Description of the Drawings

[0040] Other features, details and advantages of the present invention can be derived from the wording of the claims and from the following description of the embodiments in conjunction with the drawings. In the drawings:

[0041] Figure 1 shows a longitudinal sectional view through the bearing according to the present invention,

[0042] Figure 2 shows a separate view of the cage of the bearing, and

[0043] Figure 3 shows a separate view of the outer sleeve of the bearing.

[0044] List of Reference Signs

[0045] 10 Bearing

[0046] 12 Chamber

[0047] 14 Ring Support Element

[0048] 20 Cage

[0049] 20a Ring

[0050] 20b Ring

[0051] 20c Bridge

[0052] 20d Bridge

[0053] 21 Outer Peripheral Ribs

[0054] 21a Groove

[0055] 21b Rib Block

[0056] 21c Rib Block

[0057] 22 Outer Rib Interruption Region

[0058] 23 Axial bridge

[0059] 24 Over-rotation prevention device

[0060] 25 Anti-misalignment outer rib

[0061] 26 Anti-misalignment rotation direction stopper

[0062] 27 Engaging flange

[0063] 28 Lead-in slope

[0064] 29 Rib stopper

[0065] 30 Outer sleeve

[0066] 31 Inner peripheral rib

[0067] 31a Groove

[0068] 31b Rib block

[0069] 31c Rib block

[0070] 32 Inner rib interruption area

[0071] 35 Anti-misalignment inner rib

[0072] 37 Engaging groove

[0073] 38 Lead-in slope

[0074] 39 Rib stopper

[0075] 40 Axial fixing mechanism

[0076] 50 Elastomer

[0077] 52 Sealant

[0078] 54 Axial stopper

[0079] 56 Axial stopper

[0080] R Radial

[0081] U Circumferential

[0082] Z Central longitudinal axis Detailed implementation mode

[0083] In the drawings, identical or corresponding elements are each denoted by the same reference signs, and thus, unless necessary, they will not be described again. To avoid repetition, features that have already been described will not be described again and apply to all elements having the same or corresponding reference signs, unless explicitly excluded. The disclosure contained throughout the description accordingly applies to identical parts having the same reference signs or the same part names. In addition, position information such as upper, lower, side, etc. selected in the description refers to the directly described and shown drawings, and should be transferred to the new position accordingly when the position changes. In addition, the individual features or combinations of features in the different embodiments shown and described may also themselves constitute independent, inventive or solution-compliant with the present invention solutions.

[0084] Figure 1 A longitudinal sectional view of the hydraulic damping bearing 10 is shown. Axially, the bearing 10 is penetrated by the central longitudinal axis Z. Radially R and circumferentially U extend relative to the central longitudinal axis Z. The bearing 10 includes a cage 20, which is shown in detail in Figure 2 The cage 20 has two axially spaced rings 20a, 20b, which are connected to each other by two bridges 20c, 20d. Between the rings 20a, 20b, shell-shaped ring support elements 14 are placed on both sides, which may also include a part of the channel. The bearing 10 also includes an outer sleeve 30, which is shown in detail in Figure 3 The outer sleeve 30 surrounds the cage 20 on the outer peripheral side. The bearing 10 also includes an axial fixing mechanism 40, which acts between the cage 20 and the outer sleeve 30. The bearing 10 also includes an elastomer 50, which defines a chamber 12 filled with or fillable with fluid. The cage 20 is embedded in the elastomer 50. Two sealants 52 are provided between the cage 20 and the outer sleeve 30, here in the form of sealing rings, which are formed by the elastomer 50. In addition, the elastomer 50 forms an axial stop 54 at one end on the end face of the cage 20 and interrupted in the circumferential direction U. In addition, the elastomer 50 forms an axial stop 56 at the other end on the end face of the cage 20 and continuous in the circumferential direction U.

[0085] In the illustrated embodiment, the axial fixing mechanism 40 includes outer peripheral ribs 21 on the cage side, which are formed axially and radially spaced on the ring 20a. The outer peripheral ribs 21 are provided on the outer periphery of the cage 20, project radially R, and extend with a zero pitch in the circumferential direction U. A groove 21a is formed between axially adjacent outer peripheral ribs 21, which follows the outer peripheral ribs 21 in the circumferential direction U.

[0086] In addition, the axial fixing mechanism 40 includes regions on the cage side in which these outer peripheral ribs 21 are interrupted in the circumferential direction U - so - called outer rib interruption regions 22, which extend parallel to the central longitudinal axis Z. This results in axially extending advancing regions. The outer rib interruption regions 22 here do not have the outer peripheral ribs 21 and are formed by the cylindrical outer peripheral surface of the ring 20a. In addition, the outer rib interruption regions 22 are bounded in the circumferential direction U by the ends of the outer peripheral ribs 21. The grooves 21a open towards the respective outer rib interruption regions 22. The outer peripheral ribs 21 that are axially adjacent and are arranged in the circumferential direction U between two adjacent outer rib interruption regions 22 respectively define a rib block 21b, 21c. Each rib block 21b, 21c extends at most 1 / 4 of the circumference of the bearing 10 in the circumferential direction U and has a maximum unfolded length of 50 mm. Each rib block 21b, 21c is axially or along the central longitudinal axis Z aligned with the axially stopping member 54 that is interrupted in the circumferential direction U.

[0087] The axial fixing mechanism 40 includes inner peripheral ribs 31 on the outer sleeve side, which are formed on the outer sleeve 30 at axial and radial intervals. The inner peripheral ribs 31 are provided on the inner circumference of the outer sleeve 30, project radially R, and extend with a zero pitch in the circumferential direction U. A groove 31a is formed between axially adjacent inner peripheral ribs 31, and this groove follows the inner peripheral ribs 31 in the circumferential direction U.

[0088] In addition, the axial fixing mechanism 40 includes regions on the outer sleeve side in which these inner peripheral ribs 31 are interrupted in the circumferential direction U - so - called inner rib interruption regions 32, which extend parallel to the central longitudinal axis Z. This results in axially extending advancing regions. The inner rib interruption regions 32 here do not have the inner peripheral ribs 31 and are formed by the cylindrical inner peripheral surface of the outer sleeve 30. In addition, the inner rib interruption regions 32 are bounded in the circumferential direction U by the ends of the inner peripheral ribs 31. The groove 31a opens towards the respective inner rib interruption regions 32. The inner peripheral ribs 31 that are axially adjacent and are arranged in the circumferential direction U between two adjacent inner rib interruption regions 32 respectively define a rib block 31b, 31c. Each rib block 31b, 31c extends at most 1 / 4 of the circumference of the bearing 10 in the circumferential direction U and has a maximum unfolded length.

[0089] In the illustrated embodiment, four interruption regions 22, 32 are provided respectively, and thus four rib blocks 21b, 21c, 31b, 31c (with ribs 21, 31) are also provided. The outer rib interruption regions 22 can be arranged equidistantly, and the same applies to the inner rib interruption regions 32. The outer rib interruption regions 22 and the inner rib interruption regions 32 can be milling regions, or can be manufactured directly, for example, when casting by injection molding.

[0090] Between adjacent interruption regions 22, 32, three inner circumferential ribs 21 or outer circumferential ribs 31 are respectively provided in respective rib blocks 21b, 21c, 31b, 31c.

[0091] An outer circumferential rib 21 is formed as an anti-misassembly outer rib 25. It extends in the circumferential direction U beyond an axially adjacent outer circumferential rib 21. An inner circumferential rib 31 is formed as an anti-misassembly inner rib 35, where it is recessed rearward in the circumferential direction U relative to an axially adjacent inner circumferential rib 31. These two anti-misassembly ribs 25, 35 correspond to each other and form an axial device to prevent misassembly.

[0092] It can be seen that within respective rib blocks 21b, 21c, 31b, 31c, the circumferences of all outer circumferential ribs 21 and inner circumferential ribs 31, except for the anti-misassembly outer rib 25 or the anti-misassembly inner rib 35, are the same. It can also be seen that within respective rib blocks 21b, 21c, 31b, 31c, all outer circumferential ribs 21 and inner circumferential ribs 31, except for the anti-misassembly outer rib 25 or the anti-misassembly inner rib 35, are aligned with each other at both axial ends.

[0093] The cage 20 forms an axial bridge 23 on its outer peripheral side. The axial bridge 23 projects in the radial direction R and extends axially. At one end, the axial bridge 23 can transition to the anti-misassembly outer rib 25. The axial bridge 23 forms an over-rotation prevention device 24 on one of its circumferential sides and an anti-misassembly rotation direction stopper 26 on its opposite circumferential side.

[0094] The over-rotation prevention device 24 is shown as a ramp structure extending in the radial direction R. The inner circumferential rib 31 can abut against or impact the over-rotation prevention device 24, preventing over-rotation of the cage 20 and the outer sleeve 30 in the circumferential direction U. The anti-misassembly rotation direction stopper 26 is shown as a wall. The inner circumferential rib 31 can abut against the anti-misassembly rotation direction stopper 26, preventing the cage 20 and the outer sleeve 30 from rotating in the wrong circumferential direction U.

[0095] The cage 20 has a plurality of engaging flanges 27 on its outer peripheral surface, where each rib block 21b, 21c is assigned an engaging flange 27. The outer sleeve has a plurality of engaging grooves 37 corresponding to the engaging flanges 27 on its inner peripheral surface, and they are provided on the rib surfaces on the inner circumferential side of the inner circumferential ribs 31, where each rib block 31b, 31c is assigned an engaging groove 37. Each engaging flange 27 can engage into an engaging groove 37.

[0096] The outer peripheral ribs 21 each have a lead-in slope 28 at one end and a rib stopper 29 at the opposite end. The inner peripheral ribs 31 also each have a lead-in slope 38 at the corresponding end and a rib stopper 39 at the opposite end. The lead-in slopes 28, 38 lead their respective ribs 21, 31 into the corresponding grooves 21a, 31a from the interruption regions 22, 32. Accordingly, the lead-in slopes 28, 38 are positioned such that the lead-in slope 28 of the outer peripheral rib 21 can slide on the lead-in slope 38 of the inner peripheral rib 31.

[0097] The outer peripheral rib 21 and the inner peripheral rib 31 are designed such that when they are located in the corresponding interruption regions 22, 32 of the cage 20 and the other part of the outer sleeve 30, they can form a radial clearance of at least 1 mm.

[0098] The pre-assembly will be described below, where the pre-assembly should be understood as the process of completely manufacturing the bearing itself. After the pre-assembly, the bearing itself should be complete. The assembly should be understood as the process of fixing the bearing in its operating position.

[0099] The cage 20 and the outer sleeve 30 are positioned relative to each other and then axially moved relative to each other such that the outer peripheral ribs 21 of the cage 20 axially pass through the inner rib interruption region 32 of the outer sleeve 30, and the inner peripheral ribs 31 of the outer sleeve 30 axially pass through the outer rib interruption region 22 of the cage 20. Then, the cage 20 and the outer sleeve 30 are rotated relative to each other in the circumferential direction U, where the lead-in slopes 28, 38 slide on each other, and their respective ribs 21, 31 are led into their respective grooves 21a, 31a. Then, the rib blocks 21b, 21c of the cage 20 engage into the rib blocks 31b, 31c of the outer sleeve 30. The anti-misrotation direction stopper 26 prevents rotation in the wrong direction. The over-rotation prevention device 24 prevents over-rotation in the correct direction. By pre-assembling or assembling the cage 20 and the outer sleeve 30, the sealant 52 is pre-tightened so that it can perform its sealing function.

[0100] The present invention is not limited to the above embodiments, but can be modified in various ways. All features and advantages that appear in the claims, the description, and the drawings, including structural details, spatial arrangements, and method steps, are essential to the present invention either individually or in various combinations.

[0101] The scope of the present invention includes any combination of at least two features disclosed in the description and / or the drawings.

[0102] To avoid repetition, features disclosed in device form should also be regarded as disclosed in method form and can be claimed. Similarly, features disclosed in method form should also be regarded as disclosed in device form and can be claimed.

Claims

1. A hydraulic damping bearing (10) is penetrated by a central longitudinal axis (Z). The hydraulic damping bearing (10) includes a cage (20), an outer sleeve (30), and an axial fixing mechanism (40) for axially fixing the outer sleeve (30) to the cage (20), characterized in that, The axial fixing mechanism (40) includes an outer peripheral rib portion (21) on the cage (20) and an inner peripheral rib portion (31) on the outer sleeve (30). The outer peripheral rib portion (21) and the inner peripheral rib portion (31) extend circumferentially (U) respectively and can engage with each other. Wherein, at least two outer rib interruption regions (22) are formed on the outer peripheral side of the cage (20), and at least two inner rib interruption regions (32) are formed on the outer sleeve (30), so that in the axial relative movement of the cage (20) and the outer sleeve (30) along the central longitudinal axis (Z), the outer peripheral rib portion (21) can be adjusted through the inner rib interruption region (32), and the inner peripheral rib portion (31) can be adjusted through the outer rib interruption region (22).

2. The hydraulic damping bearing (10) according to claim 1, characterized in that, The outer rib interruption region (22) and the inner rib interruption region (32) are respectively defined by the corresponding rib portions (21, 32) circumferentially (U), and / or extend parallel to the central longitudinal axis (Z) respectively.

3. The hydraulic damping bearing (10) according to any one of the preceding claims, characterized in that, The cage (20) forms two, three or four outer rib interruption regions (22), and the outer sleeve (30) correspondingly forms two, three or four inner rib interruption regions (32).

4. The hydraulic damping bearing (10) according to any one of the preceding claims, characterized in that, At least two, preferably three, more preferably four outer peripheral rib portions (21) are respectively arranged between adjacent outer rib interruption regions (22), and / or at least two, preferably three, more preferably four inner peripheral rib portions (31) are respectively arranged between adjacent inner rib interruption regions (32).

5. The hydraulic damping bearing (10) according to any one of the preceding claims, characterized in that, The outer peripheral rib portion (21) and the inner peripheral rib portion (31) extend with a zero pitch circumferentially (U) respectively or form threads respectively.

6. The hydraulic damping bearing (10) according to any one of the preceding claims, characterized in that, At least one of the outer peripheral rib portions (21) is formed as an anti-misalignment outer rib portion (25) that extends circumferentially (U) beyond the axially adjacent outer peripheral rib portion (21), and at least one inner peripheral rib portion (31) is formed as an anti-misalignment inner rib portion (35) that is recessed rearward circumferentially (U) relative to the axially adjacent inner peripheral rib portion (31).

7. The hydraulic damping bearing (10) according to any one of the preceding claims, characterized in that, The cage (20) or the outer sleeve (30) has an anti-misalignment rotation direction stopper (26), and the rib portions (21, 31) of the other corresponding one of the cage (20) and the outer sleeve (30) can abut against the anti-misalignment rotation direction stopper (26) circumferentially (U).

8. The hydraulic damping bearing (10) according to any one of the preceding claims, characterized in that, One of the cage (20) and the outer sleeve (30) has at least one engaging groove (37), and the other corresponding one of the cage (20) and the outer sleeve (30) has at least one corresponding engaging flange (27).

9. The hydraulic damping bearing (10) according to any one of the preceding claims, characterized in that, The outer peripheral rib portion (21) and / or the inner peripheral rib portion (31) form lead-in chamfers (28, 38) preferably at both ends respectively at one end.

10. The hydraulic damping bearing (10) according to any one of the preceding claims, characterized in that, The length of the outer rib interruption region (22) in the circumferential direction (U) is at least 1 mm, preferably at least 2 mm longer than the length of the inner circumferential rib (31) between the adjacent inner rib interruption regions (32) in the circumferential direction (U), and the length of the inner rib interruption region (32) in the circumferential direction (U) is at least 1 mm, preferably at least 2 mm longer than the length of the outer circumferential rib (21) in the circumferential direction (U).

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