Temperature compensation ring, bearing ring and bearing arrangement
The temperature compensation ring, featuring an elastic base body and harder reinforcing bodies, addresses the challenge of differential expansion in bearings by effectively balancing play and preventing material loss, ensuring reliable operation.
Patent Information
- Application Number
- DE102014225029
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2014-12-05
- Publication Date
- 2025-06-05
- Estimated Expiration
- 2034-12-05
AI Technical Summary
Conventional temperature compensation rings in bearings face challenges in reliably balancing play between components due to differential expansion, leading to potential material loss and reduced temperature compensation capability.
A temperature compensation ring designed with a base body made of an elastic material and reinforcing bodies made of a harder material, arranged on opposite side surfaces to cover gaps and prevent gap extrusion, while maintaining sufficient deformation capability.
The proposed solution effectively compensates for temperature-dependent distances between components, reducing play and material loss, while ensuring reliable mounting and operation of bearings.
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Abstract
Description
Exemplary embodiments relate to a temperature compensation ring, a bearing ring with the temperature compensation ring and a bearing arrangement with the bearing ring.Many components, for example bearings, are exposed to different temperature conditions. In some cases, the bearing or components of the bearing are arranged on components which behave differently from the bearing or a component of the bearing in the event of a temperature change. For example, the components can expand or deform differently with respect to one another in the event of a temperature change. This can be the case, for example, with roller bearings which are inserted in an aluminum housing, but also with other bearings. Therefore, in such roller bearings, elements for temperature compensation can be introduced in some cases between the roller bearing ring and the housing.DE 691 31 756 T2 teaches an aluminum transmission housing containing a steel shaft supported in the housing on two directly mounted tapered roller bearings so that the two bearings both radially and axially define the shaft.DE 38 38 760 A1 teaches a sealing lip which, in the non-installed state, rests on a protective part onto which a sealing ring can be slid in order to facilitate assembly and to avoid assembly errors.JP H06-280 865 A teaches an outer ring formed as a gap structure, and is a correction material inserted in the gap part having a larger coefficient of linear expansion than that of a housing.DE 10 2007 045 655 A1 teaches a rolling bearing arrangement with a bearing ring with a receiving space for a thermal expansion element.WO 2006 / 014 934 A1 teaches a roller bearing for use in gear housings made of aluminum alloy or other lightweight materials, wherein the gear contains a steel shaft which is mounted in the housing on two directly mounted tapered roller bearings.There are conventional rolling bearings having a flange on an outer ring. As an element for temperature compensation, in some conventional outer rings, an elastomer ring is arranged next to the flange. For this purpose, the elastomer ring is pushed, for example, onto the outer ring. The elastomer ring has a very high coefficient of thermal expansion. If the outer ring and the housing expand to different extents, the elastomer ring should expand to such an extent that no play occurs between the housing and the outer ring at least in the axial direction. This can occur, for example, in the event of a temperature increase or change. The elastomer ring is therefore intended to compensate for an increase in play which can result, for example, at an operating temperature.In order for the outer ring to be displaceable in the housing, clearance is often provided between the outer ring and the housing. Conventional polymer rings often behave like a fluid under appropriate operating load, for example a pressure. The rubber-like material can therefore also be displaced in the event of a load into the two gaps between the housing and the outer ring, which can also be designed as an outer flange ring. This process can be referred to as split extrusion. In the event of mechanical alternating stress, the temperature compensation ring can rip out at an affected edge under unfavourable circumstances. This may possibly result in a loss of material. This loss of material may reduce a length compensation capability of the temperature compensation ring or a temperature compensation bearing. This is undesirable and may also occur under certain circumstances in the case of temperature compensation rings which are arranged between components other than the bearing ring and the housing.There is therefore a need to improve a compromise between the ease of mounting a bearing ring and its ability to reliably balance play with respect to another component. This need is addressed by a temperature compensation ring, bearing ring or bearing arrangement according to one of the independent claims.Exemplary embodiments relate to a temperature compensation ring which is designed to compensate for a temperature-dependent distance between two components. The temperature compensation ring comprises a base body made of an elastic material and at least one first and one second reinforcing body, which each have a harder material than the base body. The two reinforcing bodies are arranged on opposite side surfaces of the temperature compensation ring and form these partially.In some exemplary embodiments, the fact that the temperature compensation ring comprises the two reinforcing bodies which do not extend completely over a side on which they are arranged allows the reinforcing bodies to cover a gap and thus the described gap extrusion can be avoided or at least reduced. Nevertheless, the temperature compensation ring can have a good temperature compensation capability because the reinforcing body does not completely cover a side surface on which it is arranged and thus does not restrict a deformation behavior of the temperature compensation ring too much. For example, the reinforcing bodies can be arranged for this purpose on side surfaces which are opposite one another in the radial and / or axial direction.In addition, the reinforcing bodies can be arranged obliquely opposite one another, such that the first reinforcing body is arranged on an inner circumferential edge and the second reinforcing body is arranged on an outer circumferential edge of the temperature compensation ring. In some exemplary embodiments, it can thus be made possible for each of the reinforcing bodies to be arranged in a corner of the temperature compensation ring or to form said corner and thus to form two adjacent side surfaces, but only partially.Additionally or alternatively, the base body can each have a recess at two opposite corners, wherein a reinforcing body is arranged in each of the recesses, such that the temperature compensation ring has a square or rectangular cross section. In some exemplary embodiments, the temperature compensation ring can thus be integrated into conventional temperature compensation bearings or an outer flange ring for a conventional temperature compensation bearing.For example, at least one of the two reinforcing bodies can be arranged on the base body without adhesive means. In some exemplary embodiments, by virtue of the reinforcing body being laid only on or on the main body, a different fastening, for example adhesive bonding, welding or the like, can be dispensed with. In an installation situation, the reinforcing bodies and the base body may only be able to hold them by clamping between the two components, between which the temperature compensation ring is arranged. Of course, in other embodiments, the reinforcing bodies can also be adhesively bonded to the base body or fastened to the latter.In some exemplary embodiments, for example in order to enable mounting without adhesive, at least one of the reinforcing bodies can have a conical bore. For example, this can be a reinforcing body arranged radially on the outside. The bore can taper away from a center line of the base body, for example, in an assembled state. Analogously, additionally or alternatively, at least one of the reinforcing bodies can have a conical outer lateral surface directed radially outwards. This can be, for example, the radially inwardly arranged reinforcing body. An outer diameter can increase, for example, away from a center line of the base body. In some exemplary embodiments, the reinforcing bodies can be braced with the base body via their slopes. In some cases, adhesive may be additionally used for assembly. The base body has a diamond-shaped cross section. This may be the case, for example, in an unloaded state. The cutouts for the reinforcing bodies may be comprised of the diamond-shaped cross section.Additionally or alternatively, the base body can comprise an elastomer and the at least one reinforcing body can comprise a plastic. In some exemplary embodiments, this material pairing can make it possible for the reinforcing bodies and the base body to have a similar coefficient of thermal expansion. For example, the thermal expansion coefficients of the material of the reinforcing body and of the base body can differ only by a factor of up to 0.1, 0.2, 0.3, 0.5, 0.6, 0.7, 0.8, 1 or 2.For example, the temperature compensation ring may be metal-free. In some exemplary embodiments, it can thus be avoided that the temperature compensation ring comprises materials with greatly differing coefficients of thermal expansion, for example metal and polymer, which may possibly differ by a factor between 10 and 20.The reinforcing body may have, parallel to a side surface which it partially forms, an extent which corresponds at most to a value of 0.8, 0.75, 0.6, 0.5, 0.45, 0.4, 0.3, 0.2 or 0.1 of an extent of the side surface on which it is arranged. As a result, the base body also has a sufficient contact surface on the components between which it is arranged. In a direction perpendicular to the side surface on which the reinforcing body is arranged, the reinforcing body has the same or a similar extension as in the direction parallel to the side surface.Exemplary embodiments also relate to a bearing ring for a bearing having the temperature compensation ring according to at least one of the preceding exemplary embodiments, wherein the base body is in contact with the bearing ring on at least two sides. In some exemplary embodiments, this can make it possible for the base body to have sufficient contact with the bearing ring, as a result of which, under certain circumstances, a sufficient temperature transmission from the bearing ring to the base body can be made possible.In addition, the temperature compensation ring can be arranged on the bearing ring, so that the first and the second reinforcement body each cover a region in which the bearing ring abuts another component on which it is arranged. In some exemplary embodiments, it can thus be made possible for the reinforcing bodies to cover gaps and to prevent or at least reduce gap extrusion. The temperature compensation ring may optionally be loosely pushed onto the bearing ring or injection-molded onto the latter.Exemplary embodiments also relate to a bearing arrangement having the bearing ring according to at least one of the preceding exemplary embodiments. The bearing ring is arranged on the second component, so that a first gap and a second gap are produced between the bearing ring and the second component, wherein the first reinforcing body completely covers the first gap and the second reinforcing body completely covers the second gap. Optionally, the reinforcing body may be larger than the gap but shorter than a side surface of the temperature compensation ring on which it is arranged. A component covering a gap can overlap or close the gap completely or partially, so that another material, for example the material of the base body, cannot enter the gap or can only enter the gap with difficulty or reduced.Exemplary embodiments also relate to a method for mounting a temperature compensation ring on a bearing ring. At least one mounting aid is arranged on a bearing ring. By means of the mounting aid, at least one first reinforcing body can be centered in the radial direction. This may be, for example, a reinforcing body which does not bear against the bearing ring in the radial direction or is spaced apart from the bearing ring in the radial direction by the base body. The first reinforcing body can then be arranged on the bearing ring, so that it is centered by the mounting aid. Optionally, the base body and the second reinforcing body can then be arranged. If necessary, the bearing ring can have a chamfer, or an assembly aid can be arranged with a chamfer which facilitates pushing on the base body and or the second reinforcing body, for example that which bears against the bearing ring in the radial direction.Further advantageous embodiments are described in more detail below with reference to exemplary embodiments illustrated in the drawings, to which exemplary embodiments are, however, not restricted.Thus, the figures schematically show the views below. FIG. 1 shows a schematic cross-sectional illustration of a temperature compensation ring according to an exemplary embodiment; FIG. 2 shows a schematic cross-sectional illustration of a bearing arrangement with the temperature compensation ring according to the exemplary embodiment of FIG. 1 ; FIG. 3 ashows a schematic cross-sectional representation of a temperature compensation ring according to a further exemplary embodiment, wherein the individual parts are spaced apart from one another for the sake of clarity; FIG. 3 bshows a schematic cross-sectional illustration of a bearing ring with the temperature compensation ring, illustrated by dashed lines, of the exemplary embodiment of FIG. 3 a; FIG. 3 cshows a schematic enlarged cross-sectional illustration of a base body for the temperature compensation ring of FIG. 3 a; FIG. 3 d shows a schematic cross-sectional illustration of the base body for the temperature compensation ring in an injection molding tool; FIG. 4 shows a schematic cross-sectional illustration of a bearing ring with a temperature compensation ring according to a further exemplary embodiment, wherein the individual parts are spaced apart from one another for the sake of clarity.In the following description of the accompanying drawings, like reference numerals designate like or comparable components. Moreover, summary reference numerals are used for components and objects that occur multiple times in an exemplary embodiment or in a representation, but are described together with regard to one or more features. Components or objects which are described with the same or summarizing reference numerals can be embodied identically, but optionally also differently, with regard to individual, multiple or all features, for example their dimensions, unless the description explicitly or implicitly reveals otherwise.FIG. 1 shows a schematic cross-sectional illustration of a temperature compensation ring 7 according to an exemplary embodiment. The temperature compensation ring 7 is designed to compensate for a temperature-dependent distance between two components not shown in FIG. 1. The temperature compensation ring 7 comprises a base body 9 made of an elastic material. Furthermore, the temperature compensation ring 7 comprises at least a first reinforcing body 11 and a second reinforcing body 12, which each have a harder material than the base body 9.The base body 9 has a very high coefficient of thermal expansion. For example, the base body 9 can comprise fluorocarbon rubber (FKM) or hydrogenated acrylonitrile butadiene rubber (HMBR), a fluoroelastomer (for example with the manufacturer designation "Viton"), rubber acrumb, rubber (ACM), an elastomer or another rubber-like elastomer as material. The reinforcing bodies 11 and 12 can be made, for example, of a plastic, for example a polymer, for example polyethylene (PE), polypropylene (PP), polyketone (PK), polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), polyethylene glycol (PEG) or from the group of polyurethanes (PU). The material or a material of the reinforcement bodies 11 and 12 can be, for example, a high shore hardness, a tough flow behavior, an equal oil resistance and similar thermal expansion as the material of the base body 9.The reinforcing bodies 11 and 12, which can also be referred to as reinforcing rings, each have a square cross section, are of the same size, can have the same cross section and different diameters and are likewise formed as rings. In other embodiments, not shown, the reinforcing bodies can also have a different cross section, for example triangular, rectangular with rounded corners or the like. The reinforcing bodies may also have different shapes and / or sizes. In the embodiment of FIG. 1, exactly two reinforcing bodies are provided. In further embodiments, not shown, a different number of reinforcing bodies can also be provided, for example depending on gaps present.The two side surfaces 16 and 18 on which the reinforcing bodies 11 and 12 are arranged are situated opposite one another in the axial direction M. The reinforcing bodies 11 and 12 are also arranged on side surfaces 17 and 15 opposite in the radial direction or form these partially, but not completely. All four side surfaces 15 to 18 of the rectangular temperature compensation ring 7 are at least partially, but not completely, also formed by the base body 9. The reinforcing bodies 11 and 12 are arranged at obliquely opposite corners of the temperature compensation ring 7. The reinforcing body 11 is thus arranged on an inner periphery or the radially inwardly directed side (side face) 15 and the reinforcing body 12 on the radially outwardly directed side (side face) 17 or only partially form these. Because the reinforcement bodies 11 and 12 are each arranged at one corner, these partially form two adjacent side surfaces of the temperature compensation ring 7.The base body 9 is likewise of annular design and has a cutout 13 and 14 in each case for receiving or arranging the reinforcing bodies 11 and 12. The cutouts 13 and 14 are formed as recesses or grooves each having the shape of the reinforcing bodies 11 and 12. As a result, the reinforcing bodies 11 and 12 supplement the base body 9 to form a rectangle. In some further exemplary embodiments, not shown, the temperature compensation ring can also have a different shape. For example, the reinforcing bodies can be arranged exclusively on a side surface directed in the radial direction or on a side surface directed in the axial direction. Reinforcing bodies which are arranged on opposite side surfaces can be arranged at the same height or at a different height, depending on the position of a gap to be covered.FIG. 2 shows a schematic cross-sectional illustration of a bearing arrangement 1 with a bearing ring 2 and the temperature compensation ring 7 according to an exemplary embodiment. The bearing ring 2 is arranged on a second component 3, so that a first gap 19 and a second gap 20 are produced between the bearing ring 2 and the second component 3. The first reinforcing body 11 completely covers the first gap 19 and the second reinforcing body 12 completely covers the second gap 20.The bearing arrangement 1 is a tapered roller bearing bearing and the bearing ring 2 is an outer ring. The bearing arrangement 1 also comprises an inner ring 4. A plurality of tapered rollers is guided between the bearing ring 2 and the inner ring 4, of which a tapered roller 5 is shown. The outer ring (bearing ring) 2 has a flange 6. This serves to position the bearing ring 2 in an axial direction.The second component 3 is a housing in which the bearing ring is arranged. The housing can be an aluminum housing of a transmission. Two tapered roller bearings, of which only one is shown in FIG. 2, can be installed therein, for example in an X arrangement. At some operating temperatures, the different materials of the bearing ring 2 and of the component 3 can result in an increase in play. This is to be compensated for by the temperature compensation ring 7. It is to be prevented that play occurs between the bearing ring 2 and the component 3 in the axial direction M.The bearing ring 2 for the bearing (bearing arrangement) 1 comprises a first region 28 on a lateral surface 21 of the bearing ring 2 directed in a radial direction and a second region 26 on the lateral surface 21 of the bearing ring 2. the second region 26 has a different, larger diameter than the first region 28 and forms the flange 6.The two regions 28 and 26 each have a cylindrical shape and are connected in the axial direction, with respect to a central axis M, exclusively by the end face 34. The end face 34 and the first region 28 enclose a 90° angle. In some further exemplary embodiments, not shown, the end face can also enclose a different angle with the first region. Additionally or alternatively, the end face can also have a shoulder.The component 3 has a first region 32 with an inner diameter which substantially corresponds to an outer diameter of the first region 28. Furthermore, the component 3 has a second region 33 with an inner diameter which substantially corresponds to an outer diameter of the second region 26. In the axial direction, the second region 33 of the component 3 has a greater extent than the second region 26 of the bearing ring 22. Thus, in an installed state, a space is produced between the component 3 and the bearing ring 2, in which the temperature compensation ring 7 is accommodated and which is filled by the temperature compensation ring 7. The gaps 19 and 20 are produced at the locations at which the component 3 and the bearing ring 2 meet one another. The gaps 19 and 20 each run parallel to an axial direction M. In the axial direction M and in the radial direction, the gaps 19 and 20 are spaced apart from one another by the temperature compensation ring 7. In some further exemplary embodiments, which are not shown, the gaps can also have a different arrangement with respect to one another, for example due to a shape of the components. The gaps can have only a small width, for example less than 0.01 mm or 0.02 mm.In an assembled state, the temperature compensation ring 7 rests with an end face 31 positively against the end face 34 of the bearing ring 2 and with its radially inwardly directed lateral surface 37 against the first radially outwardly directed region 28 of the bearing ring 2. Furthermore, the temperature compensation ring 7 abuts the component 3 with its radially outwardly directed annular jacket surface 36 and the annular end surface 35, which is facing away from the second region 26 and the radius 29 or 30 in the axial direction M.In some further exemplary embodiments, which are not shown, the temperature compensation ring can also be arranged between other components which have gaps with a different position with respect to one another. Under certain circumstances, the reinforcing bodies can then be arranged such that they cover the gaps, but do not completely form the side face of the temperature compensation ring which covers the gap. The bearing ring may also have a different shape or be a bearing ring of another bearing.The reinforcement bodies 11 and 12 may be larger than the gaps 19 and 20, respectively, which they cover, but shorter than a side surface of the temperature compensation ring 7 on which they are arranged. A component, for example one of the reinforcement bodies, which covers a gap can overlap or close the gap completely or partially, so that another material, for example the material of the base body 9, cannot enter the gap 19 or 20 or can only enter it with difficulty or in a reduced manner.To produce the temperature compensation ring 7, two plastic rings can be placed in an injection mold, for example, as the reinforcing bodies 11 and 12 at the positions at which the gaps 10 and 20 are located between the outer ring (bearing ring) 2 and the component 3. Alternatively, the reinforcing bodies 11 and 12 can also be laid only loosely on the base body 9.Additionally or alternatively, in some exemplary embodiments, a material of the bearing ring 2 differs from a material of the temperature compensation ring 7. The bearing ring 2 and the temperature compensation ring 7 can be two individual components which are not connected to one another. Optionally, the bearing ring 2 and the temperature compensation ring 7 can also be connected to one another. The bearing ring 2 itself can comprise a steel, rolling bearing steel or the like as material, for example.In other words, some embodiments relate to an amplified temperature compensation ring for a tapered roller bearing with temperature compensation. In the tapered roller bearing with a flange outer ring, a polymer ring inserted between the outer ring and the housing as a temperature compensation ring can compensate for a heat-induced change in length in an aluminum transmission housing. For this purpose, the temperature compensation ring has a first material and a second material, which differ from one another. The second, harder material is arranged in front of a gap between the housing and the flange ring. The temperature compensation capability of the bearing is not impaired.FIGS. 3 ato 3 c show different schematic cross-sectional representations of a temperature compensation ring 40 and of the bearing ring 2 according to a further exemplary embodiment or its individual parts. The temperature compensation ring 40 is substantially similar to the temperature compensation ring 7 and also comprises a base body 41 and two reinforcement bodies 42 and 43. The temperature compensation ring 40 differs from the temperature compensation ring 7 in its shape or a shape of the base body 41 in an unloaded state. FIG. 3 b shows the bearing ring 2, which can also be referred to as the flange outer ring, of the tapered roller bearing. A flange outer diameter at the first region 28 is denoted by OD 1 and a diameter at the second region 26 is denoted by OD 2. Macrogeometrically, the temperature compensation ring in an installed state has a rectangular cross section with a side length (width) b and a shorter side length c. In this case, a contour of an outer ring undercut can be cast on as filling 46 and possibly also a undercut geometry of a housing bore in the component 3, which is not shown, opposite one another. These joints can also be omitted in other embodiments, not shown. At the other two corners, cut-outs 44 and 45 are provided, which in an installed state may have a rectangular shape, into which the reinforcing bodies 42 and 43 can be joined or inserted.The temperature compensation ring 40 is intended to have a relatively fixed seat on the bearing ring 2. In some exemplary embodiments, it is thus possible to prevent individual parts from becoming detached, for example during assembly. For conventional temperature compensation rings made entirely of a rubber, this is achieved with an overlap of at least 0.2 mm with the outer ring. Due to a different elastic behavior of the reinforcement bodies 42 and 43, which can be made of hard plastic, for example, and the base body 41, which can be made of rubber, for example, in the case of the same overlap for the reinforcement body and the base body, difficulties can arise in some exemplary embodiments during assembly and / or possibly also during operation under unfavourable circumstances.The two reinforcement bodies 42 and 43 are manufactured separately from a plastic, analogously to the exemplary embodiment already described. The base body 41 can be cast separately from a rubber or another elastic material. A first cutout 44 and a second cutout 45 for the reinforcement bodies 42 and 43 may be implemented in the main body 41. In contrast to vulcanizing the reinforcing bodies into the temperature compensation ring, in some exemplary embodiments, a flow around the reinforcing bodies or a skin formation can thus be avoided or at least reduced.In an uninstalled state, the base body 41 has a diamond-shaped cross section. In the embodiment of FIG. 3a or FIG. 3c, a filling 46 for a undercut 47 is also formed on in addition to the cut-outs 44 and 45. In a center of a temperature compensation ring width b, which can also be referred to as width extension and describes an extension of the temperature compensation ring along an axial direction M, the base body 41 has an outer diameter OD 2 and an inner diameter OD 1, i.e. the diameters of the bearing ring 2. a diamond angle K, i.e. an angle which lies between the side (side face) 17 and the outer diameter OD 2 or also between the side (side face) 15 of the base body 41 and the inner diameter OD 1, results from arctangent of a minimum overlap divided by a temperature compensation ring width b. This can be represented by the formula. The minimum overlap ü is a double of an extent by which the base body 41 or the temperature compensation ring 40 is spaced radially inward from the outer diameter OD 2 at its axial end 48 in an unloaded state. Likewise, it can also be a double of an extent by which the axially outer and radially outer edge 49 of the reinforcing body 42 overlaps the outer diameter OD 2 radially outwards. The angle K, at which the sides (side surfaces) 15 and 17 are arranged, results in the diamond-shaped cross section of the base body. The diamond angle K of the base body 41 is exaggerated for visual reasons. If a minimum overlap of.tau.=0.2 mm is assumed and a width of 12 mm is assumed, then a diamond angle of about K=1° is obtained, for example. The diamond angle K does not, however, have to be defined on the basis of the minimum overlap, but can also originate from higher overlaps. In some further exemplary embodiments, not shown, the sides of the base body with the diameters of the bearing ring can also enclose an angle which lies in an angle range which deviates from the diamond angle K by up to 1°, 5°, 10°, 15° in each direction.The obliquely opposite recesses (cutouts) 44 and 45 are diamond-shaped and each have a side length a. In other words, in an unloaded state, a contact surface 50 or 51 for the reinforcing body 42 or 43 is in each case arranged not parallel to the inner diameter OD 1 or the outer diameter OD 2 in the radial direction of the base body 41, but likewise inclined by the angle K or another angle.The reinforcing body 42 which bears against the flange 6, which can also be referred to as the outer ring flange, likewise has the outer diameter OD 2 and, in the axial and radial direction, an extent (lateral length) a, which can also be referred to as the cross-sectional extent or width. The opposite reinforcing body 43 has a bore diameter OD 1 and also the side length a. The reinforcing bodies 42 and 43 thus have diameters which correspond to a diameter of the base body in the middle of its axial extent. Depending on the intended uses, individual geometric parameters can have different tolerances, which ensure a firm fit.Due to the conceptual diamond-shaped cross section of the base body 41, a bore 52 of the reinforcing body 42 has a smaller diameter than an outer diameter of the cutout 44. By means of the built-in covering, the two parts hold together. Analogously, an overlap also results between an outer diameter 53 of the reinforcing body 43 and a bore or the contact surface 50 of the cutout 45. During assembly, the bore or the contact surface 50 of the base body 41 can be widened a little. Thus, the two parts 41 and 43 also hold together. The joining of the base body 41 to the two reinforcing bodies 42 and 43 can be effected without adhesive. Adhesives may also be used. In some exemplary embodiments, the reinforced temperature compensation ring 40 is pre-assembled to form an integral component already before assembly and may not fall apart during a mounting on the bearing ring. After the reinforced temperature compensation ring 40 has been assembled between two components, it can substantially assume a rectangular cross section. In other words, the reinforcing bodies 42 and 43 and the cutouts 44 and 45 are formed such that the reinforcing bodies 42 and 43 can be held in the cutouts 44 and 45 in a force-fit manner.FIG. 3 d shows a schematic cross-sectional illustration of the main body 41 for the temperature compensation ring 40 in an injection mold 54. In some further exemplary embodiments, which are not shown, the base body can also be produced in another manner, for example punching, milling, casting or the like.FIG. 4 shows a schematic cross-sectional illustration in an exploded view of a bearing ring 2 with a temperature compensation ring 60 according to a further exemplary embodiment, which is illustrated in dashed lines. Temperature compensation ring 60 is substantially similar to the temperature compensation rings already described, but differs from temperature compensation ring 40, which is completely preassembled before being mounted on bearing ring 2, in that temperature compensation ring 60 is mounted together with bearing ring 2.The temperature compensation ring 60 has a base body 61 and two reinforcing bodies 62 and 63. Together, these have essentially, for example macrogeometrically, a rectangular cross section with the side lengths (width) b and c. In the exemplary embodiment, the filling 46 for the contour of the undercut 47 and the undercut geometry opposite the housing bore are also integrally cast. In some further exemplary embodiments, which are not shown, these contours can also be omitted and the temperature compensation ring can have a completely rectangular cross section. At the other two corners of the base 61 there is provided a quadrangular cutout 64 and 65 having the side length a. As already described for the other exemplary embodiments, these serve for receiving a respective reinforcing body 62 or 63. The mounting bevel β is located here in each case on the contact surfaces 50 and 51, on which the reinforcing bodies 62 and 63 bear in the radial direction on the main body 61 in a mounted state.The bearing ring 2, analogously to the preceding exemplary embodiment, has the diameter OD 1 at the first region 28 and the diameter OD 2 at the second region 26. The base 61 has an outer diameter equal to OD2 -.mu.. Here, U indicates an overlap between the base body 61 and the bearing ring in an assembled state. In the radial direction, the base body 61 has the cross-sectional extent c and the width b.The reinforcing body 62 which bears against the flange 6, that is to say is arranged radially on the outside, has an outer diameter OD 2 and a side length a, which can also be referred to as the cross-sectional extent or width. A bore diameter 52 of the radially outwardly arranged reinforcing body 62 likewise has the insertion bevel β. This is designed as a cone, wherein a diameter on a side facing the flange 6 in an assembled state has a smaller diameter than on a side facing away from the flange 6.The opposite reinforcing body 63 disposed radially inward has a cylindrical bore diameter OD 1 and a width (side length) a. On a radially outwardly directed lateral surface 66, the reinforcing body 63 has an insertion bevel β, analogous to the base body 61. As already described, the components can be tolerated with respect to one another in such a way that a firm fit results. Both reinforcement bodies 62 and 63 have a square cross section, two angles in the square being rectangular. The lead-in slopes β on the base body 61 and on the reinforcing body 62 or 63 each have the same inclination.As mentioned at the beginning, the mounting of the two reinforcing bodies 62 and 63 and of the base body 41 takes place together with the bearing ring 2 or on the latter. A first mounting aid 67 is used for the mounting. The mounting aid 67 has the form of a bushing, the cylindrical part of which engages over the flange 6 in the radial direction and overlaps in the axial direction M toward the first region 28, for example at least or exactly by an axial extent of the reinforcing body 62. Thereafter, the reinforcing body 62 centered by the mounting aid 67 is inserted. In order to facilitate this, the mounting aid 67 has a chamfer 68 on its radially inwardly directed side. In some exemplary embodiments, the chamfer can be omitted or have a different shape.The base body 61 is then mounted. For this purpose, a second mounting aid 69 can be used, which has a chamfer 70 on a side directed radially outwards, which chamfer widens the smaller bore diameter of the base body 61 when it is pushed on. A smallest bore diameter is OD1-u-i, where i is a double extent of the filling 46. In other embodiments, the smallest bore diameter may be OD1-u.After the sliding-on, a slight overlap u is to result between the reinforcing body 62 and the base body 61. Finally, the reinforcing body 63 is pushed onto the bearing ring 2. The second reinforcing body 63 and the base body 61 are slightly overlapped. The overlap u can be, for example, up to 0.5%, 1%, 2%, 5% of a diameter of the temperature compensation ring.A temperature compensation ring, bearing ring or a bearing arrangement according to at least one of the exemplary embodiments can be used in all possible applications and not just as described for the figures in gear units with an aluminum housing or tapered roller bearing in an X arrangement. For example, a bearing or outer ring according to at least one of the exemplary embodiments can be used in any bearing. Furthermore, the bearing or outer ring can be used in a sliding or rolling bearing on which axial forces act. If appropriate, the bearing ring or the bearing can be used for all possible bearings, for example in vehicle transmissions, trucks, passenger cars (parking trucks, passenger cars), working machines, construction site vehicles or the like. Furthermore, the bearing ring or the bearing arrangement according to exemplary embodiments can also be used for supporting movable components, in other applications, for example machine tools, working machines, vehicles or the like.The exemplary embodiments disclosed in the preceding description, the following claims and the appended figures and the individual features thereof can be important and implemented both individually and in any combination for the realization of an exemplary embodiment in its various configurations.List of reference characters1 Bearing arrangement 2 Bearing ring 3 Second component 4 Inner ring 5 Tapered roller 6 Flange 7 Temperature compensation ring 8 Outer circumferential surface 9 Base body 11 Reinforcing body 12 Reinforcing body 13 Cutout 14 Cutout 15 Side surface 16 Side surface 17 Side surface 18 Side surface 19 First gap 20 Second gap 21 Outer circumferential surface 31 End surface 32 First region 33 Second region 34 End surface on the bearing ring 35 Ring end surface Temperature compensation ring 36 Ring circumferential surface Temperature compensation ring 37 Circumferential surface Temperature compensation ring radially on the inside 40 Temperature compensation ring 41 Base body 42 Reinforcing body 43 Reinforcing body 44 Cutout 45 Cutout 46 Filling 47 Undercut 48 Corner 49 Edge 50 Contact surface 51 Contact surface 52 Bore 53 Outer diameter 54 Injection mold 60 Temperature compensation ring 61 Base body 62 Reinforcing body 63 Reinforcing body 64 Cutout 65 Cutout 66 Outer circumferential surface 67 Mounting aid 68 Chamfer 69 second mounting aid 70 chamfer M axial direction OD 1 diameter OD 2 diameter c side length temperature compensation ring, main body cross-sectional extent β mounting slope K diamond angle b temperature compensation ring width, main body width ü overlap a side length reinforcing body
Claims
A temperature compensation ring (7) configured to compensate for a temperature-dependent distance between two components, comprising: a base body (9) made of an elastic material, and at least one first reinforcing body (11) and one second reinforcing body (12), which each have a harder material than the base body (9), wherein the two reinforcing bodies (11, 12) are arranged on opposite side surfaces (16, 18) of the temperature compensation ring (7) and partially form these, wherein the base body (9) has a diamond-shaped cross section, wherein the reinforcing body (11, 12) has, parallel to a side surface (16) which it partially forms, an extent which corresponds at most to a value of 0.8 of an extent of the side surface (16) on which it is arranged, such that the base body (9) has a sufficient contact surface on the components between which it can be arranged, wherein the reinforcing body (11, 11, 12) has an extent, 12) in a direction perpendicular to the side surface on which the reinforcing body (11, 12) is arranged has the same or a similar extension as in the direction parallel to the side surface (16).The temperature compensation ring according to claim 1, wherein the reinforcement bodies (11, 12) are arranged obliquely opposite to each other such that the first reinforcement body (11) is arranged at an inner circumferential edge and the second reinforcement body (12) is arranged at an outer circumferential edge.Temperature compensation ring according to one of the preceding claims, wherein the base body (9) has a respective recess (13) at two opposite corners, wherein a reinforcing body (11, 12) is arranged in each recess (13, 14) and / or wherein the at least one reinforcing body (11) is arranged on the base body (9) without adhesive means.Temperature compensation ring according to one of the preceding claims, wherein the temperature compensation ring (7) is metal-free.Temperature compensation ring according to one of the preceding claims, wherein at least one of the reinforcing bodies (62) has a conical bore (52) and / or at least one of the reinforcing bodies (63) has a conical, radially outwardly directed outer lateral surface (66).Bearing ring (2) for a bearing arrangement (1) having the temperature compensation ring according to one of the preceding claims, wherein the base body (9) is in contact with the bearing ring (2) on at least two sides (16, 15).Bearing ring (2) according to claim 6, wherein the temperature compensation ring (7) is arranged such that the first reinforcement body (11) and the second reinforcement body (12) each cover a region in which the bearing ring (2) abuts another component (3) on which it is arranged.Bearing arrangement (1) comprising: a bearing ring (2) according to one of the preceding claims 6 or 7, wherein the bearing ring (2) is arranged on a second component (3) such that a first gap (19) and a second gap (20) are produced between the bearing ring (2) and the second component (3), wherein the first reinforcing body (11) completely covers the first gap (19) and the second reinforcing body (12) completely covers the second gap (20).
Citation Information
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