Sliding bearing and sliding bearing guide device

Abstract

The invention relates to a sliding bearing for guiding on a guide rail, preferably in the form of a curved guide, comprising at least one sliding block with a bearing plate, which sliding block has at least three bearing receptacles arranged on the bearing plate, in each bearing receptacle a sliding element with a through sliding opening is arranged, wherein the sliding opening has a cross-sectional contour which is complementary to the guide section of the guide rail, said cross-sectional contour preferably surrounding the guide section in a form-fitting manner; according to the invention, the sliding elements are designed in the form of a spherical crown and are supported in each case in a spherical receiving opening of the bearing receptacles, at least some, in particular all, of the bearing receptacles are designed in each case in a multi-part manner and are designed in each case by supplementing a first and a second spherical shell partial contour forming a spherical contour for receiving the sliding elements.

Description

Technical Field

[0001] This invention relates to a sliding bearing for guiding on a guide rail preferably configured as a curved guide member. The sliding bearing includes at least one slider with a bearing plate, the slider having a plurality of bearing receiving portions disposed on the bearing plate. Each bearing receiving portion is provided with a sliding element having a through sliding opening, wherein the sliding opening has a cross-sectional profile complementary to the guide section of the guide rail, the cross-sectional profile preferably surrounding the guide section in a form-locking manner; the sliding element is configured as a spherical crown and is supported in the spherical receiving opening of the bearing receiving portion.

[0002] The present invention also relates to a sliding bearing guide device, which includes at least one longitudinally elongated guide rail configured as a curved track extending in a curved manner in at least one plane, and the sliding bearing guide device further includes at least a sliding bearing of the type described above. Background Technology

[0003] In the prior art, the sliding bearings and sliding bearing guide devices (also referred to as similar devices) of the above type are called linear sliding guide devices. For example, the sliding bearings and sliding bearing guide devices of the above type are known from DE 20 2016 101 698 U1. DE 20 2016 101 698 U1 is considered to be similar prior art, which describes a sliding bearing for guiding on a double guide rail having two guide profiles or guide sections, the sliding bearing having a slider having four bearing receiving portions, each bearing receiving portion receiving a spherical sliding element. These bearing receivers are arranged in two parallel, spaced pairs. To ensure the curvilinear motion of the slider and to compensate for the radii differences of different guide rails, and especially to compensate for the net dimensional tolerances between the parallel extending guide sections of the guide rails, it is proposed that the bearing receiver arranged on the first side for guiding on one guide profile be constructed as a floating bearing movable transversely to the running direction; and the two bearing receivers arranged on the opposite side for guiding on another guide profile be constructed as fixed bearings fixed relative to the slider position. For this purpose, the bearing receivers constructed as floating bearings are movably supported within transverse grooves extending perpendicular to the running direction. The slider is constructed from extruded aluminum alloy profiles, with corresponding transverse grooves machined into the aluminum alloy profiles. The sliding bearings surrounding the guide sections of the guide rails are made of injection-moldable plastic, forming spherical sliding elements, and are mounted in corresponding spherical bearing receivers. These sliding elements are constructed of engineering plastic and arranged such that they can be inserted into and removed from the receiving openings of the corresponding bearing receivers.

[0004] Although the sliding bearings according to DE 20 2016 101 698 U1 are particularly suitable and advantageous in terms of function and especially in terms of guidance on curved tracks (especially with the aid of multi-curvature tracks), they are relatively troublesome to manufacture.

[0005] Other existing technologies are also known, for example, from documents EP 1 379 791 B1 and DE 20 2021 105 330 U1. Summary of the Invention

[0006] Based on the objective of providing a sliding bearing and a sliding bearing guide of the aforementioned type, which can be manufactured in a particularly simple and cost-effective manner. In particular, the configuration of the sliding bearing and the sliding bearing guide is improved to achieve the simplest possible manufacture and almost entirely from engineering plastics (especially thermoplastic injection-moldable plastics).

[0007] The task is accomplished by providing a sliding bearing having the features of claim 1 and by providing a sliding bearing guide having the features of claim 8.

[0008] Advantageous configurations of the invention are given in the dependent claims.

[0009] According to a first aspect of the invention, a sliding bearing is provided for guiding on a guide rail preferably configured as a curved guide member. The sliding bearing includes at least one slider with a bearing plate having a plurality of bearing receiving portions disposed on the bearing plate. Each bearing receiving portion has a sliding element with a through sliding opening, wherein the sliding opening has a cross-sectional profile complementary to a guide section of the guide rail, the cross-sectional profile preferably surrounding at least one guide section in a form-locking manner. The sliding element is configured as a spherical crown and is supported in a spherical receiving opening of the bearing receiving portion. The sliding bearing according to the invention is particularly characterized by at least some (especially most, especially all) of the bearing receiving portions being constructed in multiple parts and respectively formed by supplementing first and second spherical shell portion profiles that form a spherical profile for receiving the sliding element.

[0010] This sliding bearing is specifically designed to ensure safe and simple guidance on guides constructed as double guides (with two guide sections / guide profiles extending parallel to each other). The guides are preferably constructed of extruded aluminum alloy profiles with two bent areas or longitudinal sides forming the guide sections. Due to the bent configuration, the guide sections are connected to the central area of ​​the guides via tabs. Typically, the guides extend longitudinally along the running direction of the slider, along which the slider can move guideably relative to the guides. The running direction is predetermined by the shape of the guides. Preferably, the running direction has a curvature whose radius of curvature is a multiple, particularly at least five times, and especially at least ten times, the length of the guides along the running direction. Preferably, the guide sections are constructed according to the type of columns extending along the running direction with their column axes. When a curved running direction is provided, the guide sections are preferably constructed as columns whose column axes are curved along the running direction, such that their column axes are curved and extend parallel to the running direction. Along the direction of the guide section along the running direction, the cross-section of the guide section extending perpendicular to the running direction remains at least substantially constant. Preferably, the guide rail generally has at least substantially constant cross-sections along its extension in the running direction. The slider preferably has a cross-sectional profile constructed corresponding to the guide rail so that the slider can be guided along the running direction on the guide rail in the following configuration: the slider is fixed to the guide rail perpendicular to the running direction and can only move relative to the guide rail in the longitudinal direction. According to the invention, the sliding element is constructed in a spherical crown shape. Therefore, the sliding element has spherical sections constructed on its outer side, giving the sliding element a spherical outer side, by means of which the sliding element can be arranged in spherical receiving openings of corresponding bearing receiving portions. The sliding element and the bearing receiving part are each formed in at least one spherical section, so that the sliding element is translated and fixed by the bearing receiving part and can be rotatably held.

[0011] In particular, the multi-piece construction of the bearing receiver has the following advantages: apart from the fastening elements for fixing the components of the bearing receiver, the sliding bearing can be made entirely of thermoplastic material much more simply, especially with the help of a relatively simple injection mold that does not require sliders and cores for complex one-piece profiles with side recesses. This greatly simplifies the manufacturing process of the sliding bearing according to the invention.

[0012] In a particularly advantageous embodiment of the sliding bearing according to the invention, at least some (especially all) of the bearing receiving portions are constructed of thermoplastic plastic, thus partially outlining the bearing receiving portions. In an advantageous embodiment, the bearing plate is constructed of thermoplastic plastic, wherein, generally preferably, the bearing plate forms the first partial outline of the bearing receiving portions. In one embodiment, the slider is preferably constructed entirely of thermoplastic plastic. Typically, the first spherical shell partial outline is integrally constructed with the bearing plate of the slider.

[0013] The slider can be constructed as an injection-molded part made of filled thermoplastic, preferably fiber-reinforced plastic, especially glass fiber reinforced plastic, which can give the slider (as a sliding guide or a load-bearing component of a sliding bearing) particular strength. The slider can be equipped with fastening devices for securing at least one component to be guided.

[0014] In one embodiment, the bearing receivers of the sliders are connected in a fixed position to each other, eliminating the need to guide the bearing receivers to move laterally in the running direction as in the prior art, i.e., eliminating the need to separate floating and fixed bearings. Here, the described configuration of the bearing receivers or sliders made of thermoplastic plastic has particular advantages.

[0015] Due to the multi-piece construction of the bearing receiver, the slider (including the bearing receiver) can be made, for example, from a total of two or three independent plastic parts, which can be manufactured in a single, relatively simple injection mold. For example, these plastic parts can be constructed using a bearing plate and a retaining block as described below. Preferably, all the plastic parts are fixed in position relative to each other after the slider is formed. Preferably, this fixes the bearing receivers in position relative to each other. Preferably, this fixes the center points of the sliding elements held in the bearing receivers in position relative to each other, so that the sliding elements, while rotatably supported and received in the bearing receivers, are fixed in their positions. For fixing the plastic parts to each other, suitable fixing devices, such as screws, can be used, where the screws can be made, for example, of plastic or metal.

[0016] The sliding element mounted in the bearing receiver can also be constructed, for example, from injection-molded thermoplastic. For instance, the sliding element can be constructed as a crown-shaped sliding element having a spherical outer surface preferably symmetrical about a sliding axis (about which the sliding element can rotate), said outer surface being supported by a ball joint in a correspondingly constructed spherical receiving opening in the bearing receiver. Practically, the sliding element can be arranged in the bearing receiver in a manner rotatable about multiple sliding axes. The sliding element is also preferably made of plastic by injection molding and can, for example, be constructed as a partial ring or partial spherical ring with a spherical cover.

[0017] The sliding opening of the sliding element may, for example, have a polygonal cross-section, preferably a rectangular or square cross-section, and interact with the corresponding rectangular or square cross-section of one or more guide sections of the guide rail. Preferably, the sliding element has a recess through which the outer side of the sliding element connects to the sliding opening, so that the aforementioned tab of the slider can extend through the recess. Therefore, the sliding element is preferably constructed as a grooved spherical cap, wherein the recess forms the groove. Preferably, the dimensional configuration of the groove and the elastic configuration of the sliding element are configured such that the sliding element can be inserted into its corresponding bearing receiving portion by compression. This has a particular advantage: the slider can be manufactured without the sliding element, wherein, especially as explained above, the plastic parts of the slider are first connected to each other in unchanged positions, and then the sliding element is inserted into the bearing receiving portion.

[0018] For the sliding material of the ball shell portion contour in the sliding element and bearing receiving part, especially the aforementioned thermoplastic plastics, sliding plastics are advantageously used. Hereinafter, it is understood that the following polymer materials have a lower coefficient of friction relative to the surface of the guide section than the material of the slider body. In particular, this includes thermoplastic polymers such as polyethylene, polypropylene, polyacetal, polycarbonate, polyamide, polyvinyl chloride, polytetrafluoroethylene, and thermosetting phenolic resins.

[0019] To further reduce friction, these plastics can be filled with lubricants, especially fine-particle solid lubricants such as molybdenum disulfide or graphite. Polymers containing such lubricants are also known as friction polymers.

[0020] In a practical and advantageous configuration of the sliding bearing according to the invention, at least one corresponding bearing receiving portion (preferably two corresponding bearing receiving portions) is respectively formed by a first spherical shell portion profile of the bearing plate and at least one second complementary spherical shell portion profile of the retaining block, the retaining block being fastened to the bearing plate. The retaining block can be constructed as a separate injection-molded plastic component. Thus, one or more retaining blocks and the bearing plate can be constructed as components manufactured independently of each other, especially plastic components. Preferably, the retaining block and the bearing plate are fixed in a fixed position. In one embodiment, the retaining block and the bearing plate have corresponding fastening devices, such as locking devices. In one embodiment, a fastening device is provided by means of which the retaining block and the bearing plate can be connected in a fixed position. Particularly advantageously, corresponding mating devices are provided on the retaining block and on the bearing plate, such that the retaining block and the bearing plate are mated therein by their mating devices, and can be fixed in their positions in two spatial directions, thereby the mating devices are shape-locked about the two spatial directions. Preferably, the mating devices are interlocked by a press fit, thereby ensuring force locking in a third spatial direction by means of the mating devices. For example, the first mating device of the mating device can be configured as a pin, and the second mating device can be configured as a receiving portion corresponding to the pin, wherein one of the first and second mating devices is disposed on the retaining block, and the other is disposed on the bearing plate. Particularly preferably, a fastening device (e.g., a screw) is provided to prevent relative movement of the retaining block relative to the bearing plate in a third spatial direction.

[0021] Typically, the fastening devices for securing the retaining block to the bearing plate are, for example, bolts and nuts, wherein the nuts can be form-fitted into a polygonal groove in the retaining block or bearing plate as a torsional anti-torsion component. The bearing plate may receive a metal guide sleeve inserted into a through-hole, which may receive a preload applied to the slider by fasteners.

[0022] Preferably, the retaining block is constructed from a single piece of thermoplastic. The retaining block may also be constructed, for example, from filled or fiber-reinforced thermoplastic.

[0023] In a particularly advantageous embodiment of the invention, the retaining block has at least two spaced-apart spherical shell profiles that are integral components of the retaining block. When the retaining block is fastened to the bearing plate of the slider, the spherical shell profiles of the retaining block and the corresponding spherical shell profiles of the bearing plate complement each other to form a bearing receiving portion.

[0024] In an advantageous variant of the sliding bearing according to the invention, at least two retaining blocks extending along the running direction of the slide block are provided, each retaining block forming the profile of a plurality of spaced-apart spherical shell portions of the sliding bearing along the running direction, and particularly constructed as a single piece. Such sliding bearings advantageously comprise a slide block consisting of a single bearing plate and two retaining blocks, wherein a corresponding retaining block forms two bearing receiving portions with the bearing plate on the longitudinal side of the slide block, the bearing receiving portions respectively surrounding the sliding element. A first retaining block of the retaining block, together with the bearing plate, forms a bearing receiving portion, which is thus spaced apart from each other perpendicular to the longitudinal direction by a bearing receiving portion jointly formed by a second retaining block of the retaining block and the bearing plate. Preferably, a particular retaining block of the retaining block, together with the bearing plate, forms a plurality of bearing receiving portions, wherein these bearing receiving portions are spaced apart from each other along the running direction.

[0025] The sliding elements can be arranged such that every two sliding elements arranged sequentially at intervals along the running direction of the slider surround a corresponding guide section of the guide rail.

[0026] By appropriately sizing the sliding opening through the sliding element, and because the sliding element can be oscillatingly supported in the bearing receiving section, the sliding bearing is ensured to move along a curve in at least one plane. This plane extends substantially perpendicular to the direction of travel and is separated by the X and Y axes of a Cartesian coordinate system, in which the direction of travel extends or parallel to the plane. This bend or curvature is hereinafter referred to as a Y-curvature, wherein the direction of travel of the sliding bearing includes a component in the X direction, the curvature of the guide rail has a component in the Y direction (i.e., the vertical direction), and preferably, the guide sections of the double guide rails are spaced apart in the Z direction. Accordingly, for example, retaining blocks are spaced apart in the Z direction, while the retaining blocks extend in the X direction on the slider. Due to the external shape design of the sliding element, no additional hinges, bearings, or moving parts are required to achieve the rotational support of the sliding element and thus ensure the curved movement capability of the sliding bearing.

[0027] In a practical and preferred variant of the sliding bearing according to the invention, the slider has four bearing receivers arranged in pairs of opposing parts spaced apart along the running direction, wherein all bearing receivers are fixedly positioned relative to the bearing plate of the slider. Preferably, each bearing receiver in each such pair is constructed by a corresponding additional retaining block, wherein the corresponding retaining block forms a second partial profile of the corresponding bearing receiver, while the bearing plate forms a first partial profile of the corresponding bearing receiver. In particular, by omitting one or more floating bearings, the sliding bearing according to the invention achieves a significant structural simplification.

[0028] Another aspect of the invention relates to a sliding bearing guide device comprising an elongated guide rail configured as a curved track extending in a curved manner in at least one plane, and the curved track comprising at least one sliding bearing having the aforementioned features.

[0029] According to the invention, the curved track preferably bends only in a single plane, i.e., the curved track has a single curvature direction. Nevertheless, the sliding bearing guide device may, in principle, also include a curved track with a direction of bending on multiple spatial axes.

[0030] The curved track may have at least one bend in the vertical direction, which extends substantially perpendicular to the running direction (Y-bend), and the bend is supported by the X-axis and the Y-axis, the running direction extending in or parallel to the plane.

[0031] As previously mentioned, the curved track can be constructed as a double guide rail with at least two guide sections that extend parallel to each other along the running direction and are spaced apart from each other. Each guide section is surrounded by two sliding elements of the slider that are arranged successively and spaced apart along the running direction. Each guide section may have a polygonal profile that is complementary to the corresponding cross-sectional profile of the sliding opening.

[0032] Those skilled in the art will understand that the configuration of the cross-sectional profile is not critical to the present invention, and other complementary cross-sectional profiles may be chosen. Furthermore, it should be noted that the sliding bearing according to the present invention, in various embodiments, may also possess the features of similar sliding bearings currently associated with the foregoing explanation. Attached Figure Description

[0033] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings. These drawings illustrate: Figure 1 A perspective view of one embodiment of the sliding bearing guide device according to the present invention is shown in the schematic diagram. Figure 2 An exploded view of one embodiment of the sliding bearing according to the present invention in a schematic schematic diagram; Figure 3 A perspective view of one embodiment of the sliding bearing according to the present invention is shown in the schematic diagram. Detailed Implementation

[0034] The sliding bearing guide device 10 according to the present invention includes a guide rail 20 configured as a curved track and a sliding bearing 30, the sliding bearing being configured as a linear sliding bearing and capable of sliding along the longitudinal extension of the guide rail 20. This longitudinal extension corresponds to the described running direction of the slider. The guide rail 20 is configured as a double guide rail, made of extruded aluminum profile extending along the longitudinal direction of the guide rail 20 and having two guide profiles, rectangular in cross-section, configured as guide sections 21. The guide rail 20 includes a guide rail body 22 configured in a generally C-shape in cross-section, on which guide sections 21 are constructed, the guide sections being bent edges of the guide rail body 22 extending laterally along the running direction. Accordingly, each guide section 21 is configured as a curved column and connected to the central region of the guide rail body 22 by a tab.

[0035] Guide rail 20 is in the Figure 1 The coordinate system shown is curved within a plane spanned by the X and Y axes. In this embodiment, a sliding bearing 30, movably supported on the guide rail 20, is guided along a curved trajectory within this XY plane. The following will combine... Figure 2 and Figure 3 The sliding bearing 30 is described in detail. It is basically constructed as a multi-piece injection-molded component made of thermoplastic plastic.

[0036] Especially from Figure 2 As shown in the exploded view, the sliding bearing 30 includes a slider 31, which consists of a bearing plate 32 made of injection-molded thermoplastic, two retaining blocks 33, and fastening devices connecting them. The bearing plate 32 and retaining blocks 33 are each constructed of thermoplastic. The retaining blocks 33 are fastened to the bearing plate 32 by means of bolts and corresponding nuts 34 (not shown in the figure). Alternatively, a locking mechanism between the retaining blocks 33 and the bearing plate 32 can be provided instead of using bolts and nuts 34. This locking mechanism can be designed as a removable or permanent locking mechanism. The retaining blocks 33 are elongated strip-shaped elements extending along the running direction of the sliding bearing 30 or the slider 31. This is particularly evident from… Figure 1 As can be seen, the direction of motion includes the motion component in the X direction, and naturally also includes... Figure 1 The motion component in the Y direction in the coordinate system shown.

[0037] Bearing plate 32 and retaining block 33 together form bearing receiving portion 37, which surrounds sliding element 35 constructed in a spherical shape from thermoplastic. To guide sliding element 35, both bearing plate 32 and retaining block 33 are constructed with spherical shell portion contours 36 that are complementary to the outer contour of sliding element 35, within which sliding element 35 is rotatably supported in sliding within spherical shell portion contours. The corresponding spherical shell portion contours 36 in bearing plate 32 and spherical shell portion contours 36 in retaining block 33 form bearing receiving portion 37, within which sliding element 35 is rotatably supported with a gap.

[0038] The spherical shell portion 36 of the bearing receiving part 37 forms a spherical or spherical corresponding surface that mates with the cover surface of the sliding element 35. The sliding element 35 and the bearing receiving part 37 constitute a ball joint for the spatial orientation of the sliding element 35, so that the sliding element has rotational degrees of freedom about the X-axis, Y-axis and Z-axis.

[0039] As previously described, the sliding element 35 is made of a friction polymer that ensures support for sliding within the spherical shell portion contour 36 of the bearing receiver 37.

[0040] For example, especially from Figure 3 As can be seen, the two spaced-apart spherical shell portions 36 of the corresponding retaining block 33 and bearing plate 32 form two spaced-apart bearing receiving portions 37 along the running direction, which surround the guide section 21 of the guide rail 20; while on the opposite side of the bearing plate 32 (i.e., spaced along the Z direction), the two spaced-apart bearing receiving portions 32 receive two spaced-apart sliding elements 35 (one of each) along the running direction, which interact with the opposite guide section 21 of the guide rail 20 in a shape-locking manner. For this purpose, each sliding element 35 has a sliding opening 38, which has a polygonal cross-sectional profile. The cross-sectional profile of the sliding opening 38 corresponds to the cross-sectional profile of the guide section 21 of the guide rail 20, wherein the size of the sliding opening 38 is selected such that the sliding opening can surround the guide section 21 of the guide rail 20 with a gap. Here, the sliding elements 35 each have a recess or groove, and when the sliding bearing 30 is guided on the guide rail 20, the corresponding tab of the guide rail body 22 can extend through the recess or groove.

[0041] As in Figure 3 As shown, the bearing plate 32 is implemented as a frame structure for reasons of weight and strength. Nuts 34, acting in conjunction with bolts (not shown), are mounted in corresponding contoured receiving portions 39 of the retaining block 33. For example, the nuts are mounted there to prevent them from falling out. Bolts passing through the bearing plate 32 from the opposite side are guided by metal sleeves capable of receiving the preload of the bolts.

[0042] List of reference numerals 10. Sliding bearing guide device 20 guide rails 21 Guide Section 22 Guide rail body 30 sliding bearing 31 Slider 32 Bearing Plate 33 Holding Block 34 Nuts 35 Sliding element 36. Outline of the spherical shell section 37 Bearing receiving section 38 Sliding opening 39 Receiving section of bearing plate 32

Claims

1. A plain bearing (30) for guiding on a guide rail (20), which is preferably configured as a camber guide, wherein The plain bearing (30) comprises at least one slide (31) with a bearing plate (32), with at least three bearing receptacles (37) provided on the bearing plate (32), in each of which a sliding element (35) with a through-going sliding opening (38) is arranged, wherein the sliding opening (38) has a cross-sectional profile which is complementarily configured to the guide section (21) of the guide rail (20), preferably in a form-locking manner, around the guide section (21), the sliding element (35) is configured as a spherical cap and is respectively supported in a spherical receiving opening of the bearing receptacle (37), characterized in that At least some of the bearing receptacles (37), in particular all of the bearing receptacles (37), are respectively configured in multiple parts and are respectively formed by a first and a second spherical shell portion profile (36) which complement the spherical profile, for receiving the sliding element (35).

2. Plain bearing (30) according to Claim 1, characterized in that The bearing receptacles (37) and / or the entire bearing plate (32), in particular the entire slide (31), are configured from a plastic, preferably a thermoplastic, wherein in particular the first spherical shell portion profile (36) is configured integrally with the bearing plate (32).

3. Plain bearing (30) according to Claim 1 or 2, characterized in that Respective at least one bearing receptacle (37), preferably respective two bearing receptacles (37), is respectively formed by a first spherical shell portion profile (36) of the bearing plate (32) and at least one complementary second spherical shell portion profile (36) of a retaining block (33) which is fastened on the bearing plate (32).

4. Plain bearing (30) according to Claim 3, characterized in that The retaining block (33) is configured in one piece from a thermoplastic.

5. Plain bearing (30) according to any of Claims 3 or 4, characterized in that The retaining block (33) has at least two spherical shell portion profiles (36) which are configured as integral components of the retaining block (33).

6. Plain bearing (30) according to any of Claims 3 to 5, characterized in that At least two retaining blocks (33) are provided which extend in the running direction of the slide (31), which respectively configure a plurality of spherical shell portion profiles (36) which are mutually spaced apart in the running direction and in particular are configured in one piece.

7. Plain bearing (30) according to any of Claims 1 to 6, characterized in that The slide (31) has four bearing receptacles (37) which are arranged in two pairs which are opposite to one another and are spaced apart in the running direction, and all of the bearing receptacles (37) are positionally fixed relative to the bearing plate (32).

8. A sliding bearing guide (10) comprising an elongate guide rail (20) which is configured as a curved track which runs in a curved manner in at least one plane and comprises at least one sliding bearing (30) having the features of one of claims 1 to 7.

9. The sliding bearing guide (10) according to claim 8, characterized in that the curved track (20) has at least one curved portion in the vertical direction which extends substantially perpendicular to the running direction (Y- curved) and which is spanned by a shaft (X; Y), the running direction extending in or parallel to the curved portion.

10. The sliding bearing guide (10) according to one of claims 8 or 9, characterized in that the curved track (20) is configured as a double track having at least two guide sections (21) which extend parallel to one another and spaced apart from one another in the running direction, the guide sections each being surrounded by two sliding elements (35) of the slider (31) which are arranged spaced apart from one another in the running direction. ​ ​

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