Linear plain bearing with snap-on carriage

Abstract

The invention relates to a sliding bearing (1) comprising a rail (2) and a carriage (3), the rail (2) having two guide sections (21, 22) extending long and next to each other in the longitudinal direction (X) and the carriage (3) having a respective associated guide base (31, 32) for each guide section (21, 22). In the operating state, each of the guide sections (21, 22) is located in and surrounded by its associated guide base (31, 32) perpendicular to the longitudinal direction (X), thereby fixing the carriage (3) perpendicular to the longitudinal direction (X) relative to the rail (2) and ensuring that the carriage (3) can move longitudinally relative to the rail (2). The carriage comprises a carriage body and an actuating arm (5) which together form a first one of the guide bases (31, 32). The actuating arm (5) is fixed to the carriage body such that the actuating arm is movably guided perpendicular to the longitudinal direction (X) relative to the carriage body so that the first guide table (31, 32) can be opened by shifting the actuating arm (5) to remove the associated first guide part (21, 22) from the first guide table (31, 32) along a removal direction extending perpendicular to the longitudinal direction (X).

Description

[Technical Field]

[0001] The present invention relates to a plain bearing with a rail and carriage, a carriage for said plain bearing and the use of said plain bearing. [Background technology]

[0002] Related types of plain bearings are well known in the prior art and are used, in particular as linear guides, to slidingly guide working devices. Depending on the field of application, such working devices can have a wide variety of characteristics. For example, such working devices can be elements of tools. For example, such working devices can be holding devices for displays, through which elements can be mounted in a manner that allows them to be displaced as easily as possible. It is always important that the plain bearing allows the attached working device to be guided along a rail with as little friction and wear as possible. At the same time, the working device should be securely held on the rail. The present invention particularly relates to plain bearings used in vehicle construction, in particular in utility vehicles such as tractors and sweepers. In such utility vehicles, it is often desirable to simply mount the working device in the cockpit so that it can be displaced along its longitudinal direction. To ensure simple and secure mounting of the working device, the plain bearing is usually permanently installed on the vehicle by fastening the plain bearing rail to a part of the vehicle, while the working device is removably fastened to the carriage, for which corresponding fastening devices are provided for the carriage and the working device. However, the fastening devices known from the prior art do not fully meet the requirements of ensuring a space-saving and easily operable detachable fastening of the working device to the carriage. A clamping and braking device for a linear guide is known from German Utility Model No. 9417994. From US Patent No. 3574468 an optical bank is known with a prismatic guide rail, which is gripped by a carriage that can be locked relative to the guide rail. Further current technology is described in US Patent Application Publication No. 2010 / 07411. Summary of the Invention

[0003] The present invention is based on the problem of providing a plain bearing, a carriage for the plain bearing and the use of the plain bearing, whereby at least one problem of typical plain bearings is at least partially solved.

[0004] As a solution to the current problem on which the invention is based, the invention proposes a sliding bearing having the features of claim 1. The sliding bearing comprises a rail and a carriage. The rail extends in the longitudinal direction so that the carriage can be displaced longitudinally along the rail. The rail has two longitudinally elongated guide sections extending parallel to each other. The guide sections are therefore spaced apart from each other in a transverse direction perpendicular to the longitudinal direction. The provision of at least two parallel guide sections is beneficial for reliable guidance of the carriage on the rail. The carriage has a guide mount assigned to each guide section. Thus, a first guide mount of the carriage is assigned to a first guide section of the rail, and a second guide mount of the carriage is assigned to a second guide section of the rail. Since the sliding bearing according to the invention comprises a rail and a carriage, the rail and the carriage are designed with their guide sections or guide mounts specifically corresponding to each other, so that in the operating state of this arrangement, the carriage is held fixed in position relative to the rail in any direction perpendicular to the longitudinal direction, but can be displaced longitudinally relative to the rail.

[0005] Typically, carriages are held on the rail in such a way that, in the operating state, they can be longitudinally displaced relative to the rail with as little friction as possible. For this purpose, the guide base of the carriage, in the operating state, is usually in sliding contact with the associated guide section of the rail. This sliding contact can be either direct, in that the guide section of the guide base consists of a sliding material, or indirect, in that a sliding element is provided on the guide base, which is fixed in position relative to the guide base, so that when the carriage is displaced relative to the rail, the sliding element contacts the associated guide section of the rail and slides along it. For example, the guide base may partially abut the guide section directly and partially abut the guide section indirectly. In the described operating state, each of the guide sections is arranged on its assigned guide base, which is thereby vertically surrounded in the longitudinal direction and fixes the carriage perpendicular to its longitudinal axis relative to the rail, ensuring longitudinal displaceability of the carriage relative to the rail. In this case, the guide carriage engages around the periphery of the assigned guide section at least to the extent that the position of the carriage relative to the longitudinally perpendicular rail is fixed in the operating state by the engagement of two guide carriages around the periphery of two guide sections. Preferably, each guide section has a guide axis along which it extends in the longitudinal direction, in particular in the form of a cylinder. Preferably, each guide carriage engages around the periphery of the assigned guide section over more than 180° around its guide axis, and particularly preferably, at least one of the guide carriages engages around the periphery of the associated guide section over more than 200°, in particular more than 220°, around its guide axis. Preferably, at least the first guide section, in particular the first and second guide sections, are designed in the form of a cylinder with a rounded, in particular circular, cross section.

[0006] According to the present invention, the carriage has a carriage body and an actuating arm, which together constitute the first guide table of the carriage. Thus, the carriage body and the actuating arm each constitute a receiving portion of the guide table, thereby engaging with the periphery of a portion of the first guide section in the operating state. Preferably, the receiving portion formed by the carriage body engages with the periphery of the guide section over a larger angle around its guide axis than the guide section formed by the actuating arm. Preferably, both receiving portions engage with the periphery of the first guide section over an angular range of 30° or more around its guide axis. Preferably, the actuating arm constitutes 10% or more, particularly 20% or more, particularly 10% to 30% of the area of ​​the first guide table surrounding the first guide section in the operating state. The actuating arm is fixed to the carriage body in the following manner. The embodiment is such that the actuating arm is displaceable perpendicular to the longitudinal direction relative to the carriage body to allow opening of the first guide platform by displacement of the actuating arm for removing the associated first guide part from the first guide platform along a removal direction extending perpendicular to the longitudinal direction. Thus, the actuating arm is displaceable perpendicular to the longitudinal direction relative to the carriage body, in particular in a displacement direction extending perpendicular to the longitudinal direction, while remaining fixed to the carriage body.

[0007] A displacement starting from the active state makes the first guide carriage openable, meaning that an opening is formed in the side of the first guide carriage perpendicular to the longitudinal direction and that the first guide part can be removed from the first guide carriage through the opening. Opening the first guide carriage can be performed, for example, by enlarging the cross section of the first guide carriage perpendicular to the longitudinal direction, which enlargement is carried out by displacing the actuating arm relative to the carriage body while separating, perpendicular to the longitudinal direction, the wall parts of the first guide carriage that define the guide and are constituted on the one hand by the actuating arm and on the other hand by the carriage body, so that a corresponding opening is formed in the wall part of the first guide carriage. In this respect, it should be pointed out that, of course, the first guide table does not necessarily fully engage the periphery of the first guide part in the operating state, but at least in the interaction of the engagement of the second guide table with the periphery of the rail with the second guide part, the carriage engages to such an extent that it is fixed relative to the rail in its position perpendicular to the longitudinal direction, so that when a relative force is applied in any direction perpendicular to the longitudinal direction, the carriage cannot be removed from the rail, and therefore the first guide part cannot be disengaged from the first guide table. Thus, in the operating state, the wall of the first guide table has at most an opening that does not allow the first guide part to pass perpendicular to the longitudinal direction. Particularly preferably, the actuating arm is guided so as to be reversibly movable perpendicular to the longitudinal direction relative to the carriage body, whereby the sliding bearing can be reversibly moved from an operating state to an installation state in which the first guide part can be removed perpendicular to the longitudinal direction from the first guide base, as described, and from the installation state the carriage can be returned by reverse displacement to an operating state in which it is fixed perpendicular to the longitudinal direction relative to the rail.

[0008] The present invention offers significant advantages over the prior art. While the prior art assumes that reliable guidance of a carriage relative to a rail requires the carriage to engage the periphery of the rail in the following manner, where a sliding bearing ensures that the working device can be disassembled from the carriage so that it can be removed from its position, the present invention adopts a novel approach. The special design of the sliding bearing allows the carriage to be configured so that it can be removed from the rail and then relocated on the rail, thereby allowing the carriage to be permanently attached to the working device, and the working device to be attached to the rail corresponding to the carriage in the most diverse locations of use. In this case, the special design of the carriage, which interacts with the rail corresponding to the carriage, ensures that the carriage can be easily removed from and attached to the rail, yet is securely held on the rail in an operational state and can only move longitudinally relative to the rail. Therefore, a large number of fastening devices on the carriage and the working device that could allow the working device to be removed from the carriage can be dispensed with.

[0009] It is essential that the carriage be removable from or attachable to the rail in a direction perpendicular to the longitudinal direction. Therefore, it is not necessary to place the carriage on the rail at its longitudinal end in order to attach it to the rail, but the carriage may be fastened to the rail at any longitudinal position along the extension of the rail, along which the carriage is held so as to be longitudinally displaceable relative to the rail in an operational state. Particularly preferably, the actuating arm or the actuating lever provided for actuating the actuating arm projects perpendicular to the longitudinal direction across the carriage body so that the actuating arm or the actuating lever constitutes the end of the carriage and can be easily grasped by a person. Particularly preferably, the actuating arm or the actuating lever projects perpendicular to the longitudinal direction relative to the carriage body over a length that is at least half the distance perpendicular to the longitudinal direction between the guide bases of the carriage. Preferably, the guide bases are arranged next to each other in the transverse direction and extend with their reception axes. These receiving axes are aligned with the guide axes, preferably longitudinally, in the operating state, with the actuating arms or actuating levers projecting transversely beyond the carriage body as described, which makes it possible to ensure a particularly easy-to-operate design of the actuating arms.

[0010] In one embodiment, the carriage body has a base body and a fixing body that are releasably fixed to each other. Preferably, the base body is formed in one piece. Preferably, the fixing body is formed in one piece, but in a less preferred embodiment, it may still be formed in multiple pieces. The base body and the fixing body can be fixed to each other, for example, by screws or by releasable clamp fasteners. Preferably, the actuation arm can be separated from the carriage body only after the base body and the fixing body have been detached from each other. Thus, the base body and the fixing body ensure a secure fixation of the actuation arm to the carriage body. By the carriage body having the base body and the fixing body, the actuation arm is designed to be particularly rigid and can be securely fixed relative to the carriage body, while in the fixed state, the actuation arm is attached so as to be movable vertically in the longitudinal direction relative to the carriage body.

[0011] According to the present invention, The guide device is provided between the actuating arm and the carriage body, whereby the actuating arm is fixed to the carriage body in a manner where it is displaceably guided along a displacement path extending perpendicular to the longitudinal direction. The guide device is preferably constituted by a first guide portion of the carriage body and a second guide portion of the fixing arm, and the first guide portion is preferably integrally constituted by a base body and a fixing body of the carriage body. The displacement path preferably extends linearly along a linear displacement direction perpendicular to the longitudinal direction. According to the present invention, The guide portion forms a stop defining the end of the displacement path. The actuating arm is displaceable relative to the base body along the displacement path starting from the operating state until it reaches the stop. The provision that the guide device has a stop is particularly advantageous for reliably fixing the actuating arm to the carriage body while ensuring the displaceability of the actuating arm relative to the carriage body. Preferably, the actuating arm abuts the stop in the above-mentioned mounting state, and the first guide portion of the rail is removable from the first guide base along a removal direction and preferably reinsertable in the direction opposite to the removal direction. The removal direction can be, for example, a straight or curved direction. Particularly preferably, the guide device is a linear guide device along a transverse direction perpendicular to the longitudinal direction. Generally, it is preferred that each of the longitudinal direction and the transverse direction is a linear direction. Generally, it is preferred that the transverse direction corresponds to the above-mentioned displacement direction.

[0012] Made byWhen the actuating arm abuts the stop, an opening in the first guide table is formed, through which the first guide section can be removed. In this case, the guide table and the guide section are preferably designed to correspond to each other in such a way that the second guide section can be removed perpendicular to the longitudinal direction from the second guide table only after the first guide section has been removed from the first guide table. In the operating state, the actuating arm prevents the first guide section from being removed from the first guide table, thereby preventing the second guide section from being removed from the second guide table. Thus, in the mounting state, after the first guide section is released, it can be removed from the first guide table, and the second guide section can be removed from the second guide table. This cascading removability is particularly advantageous for achieving simple disassembly while, at the same time, securely fastening the carriage to the rail in the operating state. This cascading removability can be ensured, for example, by two guide tables engaging with the backs of two guide parts in such a way that a first guide table engages with the back of a first guide part on its first cross-sectional side, and a second guide table engages with the back of a second guide part on its second cross-sectional side, with their cross-sectional sides pointing in opposite directions along the transverse direction.

[0013] In one embodiment, each of the two guide sections extends along a respective guide axis assigned thereto, which extends in the longitudinal direction. When the actuation arm abuts against the guide stop starting from the operating state, the second guide section is supported in the second guide carriage so as to be rotatable about its guide axis, and the first guide section can be removed from the first guide carriage by rotating the carriage about the guide axis of the second guide section. Therefore, the removal direction is a curved direction about the guide axis of the second guide section. Therefore, the second guide section is basically designed to correspond to the second guide carriage in such a manner that it is supported in the second guide carriage for rotation about its guide axis. However, in the operating state, the rotation of the second guide section is restricted by the first guide section being disposed in the first guide carriage and the guide carriage engaging the back of the first guide section. In this regard, it should generally be noted that the two guide carriages are preferably rigidly connected to each other and the two guide sections are preferably rigidly connected to each other. By ensuring that the first guide part can be removed from the first guide table in the assembled state, or by the actuating arm abutting against a stop portion of the guide device, it is possible to rotate the second guide part while removing the first guide part from the first guide table.

[0014] ReThe rail has a rail body, and each of the guide sections of the rail is connected to the rail body via a web section. Each of the guide tables has a longitudinally continuous side opening through which, in an operating state, the web section extends to the guide section arranged on the guide table. The guide tables are preferably of hollow cylindrical design, whose cylinder axes correspond to their guide axes and extend in the longitudinal direction, and whose side openings correspond to slots in the jacket openings of the hollow cylinder. The hollow cylinder may have, for example, a rounded, in particular circular, or polygonal, in particular rectangular, cross section. The web sections have a narrower width than the guide sections in a direction perpendicular to the longitudinal direction, with the width of the web sections relative to the width of the guide sections assigned to them, and are connected to the rail body via the web sections. Generally, the rail body preferably extends transversely between the guide sections. Generally, the web sections preferably extend from the rail body to the respective assigned guide sections in a direction inclined to the longitudinal direction and inclined to the transverse direction, with their width perpendicular to the longitudinal direction and perpendicular to the direction of extension of the web sections from the machine body through the side openings to the respective associated guide sections. In the operating state, the side openings of the first guide carriage have a width narrower than the width of the associated guide section. On the other hand, the width of the side openings of the first guide carriage is equal to or greater than the width of the first guide section when the actuating arm abuts against the guide stop. Naturally, both widths refer to the length of extension in the same direction. Therefore, in a preferred embodiment, the first guide carriage can be opened by widening the side openings of the first guide carriage, starting from the operating state. Having a width of the side opening equal to or greater than the width of the first guide section, preferably greater than this width, allows the first guide section to be easily removed from the first guide carriage in the installation state or when the actuating arm abuts against the stop of the guide device.

[0015] In one embodiment, the guide device comprises a spring device, which applies a spring force to the actuating arm relative to the base body along the displacement path in a direction away from the stop. This embodiment ensures in a particularly advantageous manner that the carriage is secured on the rail and can be securely held on the rail in the operating state. The spring device is provided to oppose the displacement of the actuating arm along the displacement path starting from the operating state. This prevents the carriage from leaving the rail in the operating state. In an embodiment in which the actuating arm is movable in the displacement direction relative to the carriage body starting from the operating state to release the first guide platform, the spring force applied to the actuating arm by the spring is opposite to the displacement direction. For example, the spring device may comprise a spring element supported against a support of the carriage body, preferably constituted by a fixing body of the carriage body. Preferably, the first guide platform is constituted by a first receiving portion constituted by the actuating arm and a second receiving portion constituted by the carriage body. The spring element is preferably arranged in the displacement direction between the support and the receiving part and is pressed between the support and the other support configured in the displacement direction by the first receiving part. Preferably, the spring element is formed as a helical spring extending with its spring axis in the displacement direction. Preferably, the spring force exerted by the spring device on the actuating arm in any of the described carriage states is directed towards the carriage axis of the first guide carriage. In one embodiment, in the operating state, the actuating arm is pressed against the first guide part by a spring device with a spring force. In one embodiment, the guide device has a further stop defining an end of the displacement path opposite to the end of the displacement path. Preferably, the actuating arm abuts the further stop in the operating state. In an embodiment in which the guide device comprises a spring device, the actuating arm is preferably pressed against the further stop by the spring force in the operating state. Therefore, when the carriage is released from the rail and is in a rest position without the influence of external forces, the operating arm is pressed against the other restraining portion by the spring force, thereby allowing the operating arm to be securely fixed to the main body of the carriage.

[0016] In one embodiment, the carriage comprises an actuating lever mounted on the carriage body for rotation about a bearing axis. The bearing axis is enclosed by the carriage body, in particular the base body. Preferably, the actuating lever is supported relative to the carriage body's bearing axis in such a way that rotation about the bearing axis results in rotation about a rotation axis whose position relative to the carriage body remains unchanged during rotation. The rotation axis defines the center about which rotation occurs. The actuating lever and actuating arm of the carriage correspond to each other in such a way that, starting from an operating state, the actuating arm can be displaced by the actuating lever, and the actuating lever is designed to rotate about the bearing axis so that the guide platform can be opened as described above. The corresponding design of the actuating lever and actuating arm therefore ensures that the above-mentioned displacement of the actuating arm to open the first guide platform as described above can be achieved by rotating the actuating lever. Within the scope of the present invention, it has been found that providing the actuating lever, whose position relative to the carriage body is fixed by being supported on the bearing axis of the carriage body, allows particularly simple and highly reproducible displacement of the actuating arm to achieve the mounting state, starting from the operating state. Preferably, the actuating lever is supported on the bearing axis in such a way that, starting from the operating state, its position relative to the carriage body is fixed in such a way that it can rotate relative to the carriage body only by rotation about the bearing axis. Preferably, the actuating lever has an actuating part that abuts against the actuating arm to displace it while being rotated about the bearing axis of the carriage body to displace the actuating arm as described. Preferably, the actuating lever abuts against the bearing axis of the carriage body via the bearing part, and the actuating part is spaced from the bearing part perpendicular to the bearing axis or perpendicular to the above-mentioned rotation axis. Preferably, the actuating lever is supported relative to the bearing shaft of the carriage body in such a manner that rotation of the actuating lever about the bearing shaft necessarily accompanies movement of the actuating part relative to the carriage body in the above-mentioned displacement direction.

[0017] In one embodiment, the actuating arm has an actuating profile, and the actuating lever has an actuating part corresponding to the actuating profile. The actuating part may have the features described above. By rotating the actuating lever about the bearing axis, the actuating part is movable along the actuating profile. Preferably, during rotation of the actuating lever, which achieves displacement of the actuating arm to open the guide table, the actuating part slides along and contacts the actuating profile, particularly exerting a displacement force on the actuating profile in the displacement direction. Preferably, when the first guide table is opened for removal of the associated first guide section, the actuating part abuts against the first contour part of the actuating profile. Thus, in the above-mentioned during-installation state, the actuating part abuts against the first contour part of the actuating profile. Particularly preferably, the actuating part abuts against the first contour part when the first guide table is opened for removal of the associated first guide section, or when the first contour part is locked thereto in the during-installation state.

[0018] Alternatively or additionally, other locking means may be provided between the actuating lever and the carriage body and / or actuating arm in the mounting state or when the first guide base is opened to remove the associated first guide part. The locking means, if present, is designed so that rotation of the actuating lever about the bearing axis is only possible when the release force is exceeded, after which the actuating lever can rotate about the bearing axis with a rotational force less than the release force. Providing such locking means has been found to be particularly advantageous, since it allows the carriage to remain in the mounting state permanently once it has been placed in the mounting state. The carriage is thus secured on the rail in a particularly convenient manner as described above. After securing, the operating state, in which the carriage is held longitudinally displaceable relative to the rail as described above, can be established by applying the release force while disengaging the locking means.

[0019] Another embodiment provides that when the first guide table is opened for the removal of the associated first guide section, i.e., in the installation state, the actuating part abuts against the first contour in the following manner: in particular, the restoring force provided by the spring device acts on the actuating part from the actuating arm, rather than as in the previous case, where, when the first guide table is opened for the removal of the assigned first guide section, i.e., in the installation state, the actuating part, if the locking means is present, is locked on the first contour in such a way that rotation of the actuating lever about the bearing axis is only possible if the release force is exceeded. In this other embodiment, the restoring force acts on the actuating part in the following manner: either the restoring force acts on a movement of the actuating part starting from the installation state, or the restoring force acts on a rotation of the actuating lever, especially in the direction opposite to the rotation, when the first guide table is opened for the removal of the associated first guide section to achieve the operating state, so that the actuating lever is transferred from the operating state to the installation state. This embodiment has the following particularly advantageous effects: The advantageous effect is that the actuating lever can be moved from the operating state to the mounting state only by an external force acting on it and is maintained in the mounting state only if this force is at least partially maintained, so that the actuating lever automatically performs a movement by which, starting from the mounting state and without the action of an external force or by releasing the first guide platform for removal of the associated first guide part, the carriage changes to the state it has in the operating state of the plain bearing. The state of the carriage, i.e. the relative configuration of the carriage components that the carriage maintains in the mounting state, is therefore intentionally maintained only by applying the external force required for this purpose.

[0020] In one embodiment, the actuation profile has a second profile against which the actuation part abuts in the operating state. Particularly preferably, the actuation part is held on the second profile in such a way that, in the operating state, the actuation part abuts the second profile in a locked manner. As described above with respect to the locking means, other locking means may alternatively or additionally be provided between the actuation lever and the actuation arm and / or the carriage body, which locking means, as described above, can be released only by a release force assigned to this locking means. Such locking means can ensure secure fixation of the actuation lever relative to the actuation arm and / or relative to the carriage body in the operating state, which can ensure secure functioning of the plain bearing in the operating state. Generally, the second profile is preferably offset from the first profile in the displacement direction, particularly in the operating state, and is less distant from the first guide part in the displacement direction than the first profile.

[0021] In one embodiment, the actuating lever has a clamping part, which is spaced apart from the rail in the operating state and can rotate around the bearing axis starting from the operating state while achieving the other operating states. In the other operating states, as described for the operating state, each of the guide parts is arranged on its assigned guide base and is thus bounded perpendicularly in the longitudinal direction, and the clamping part of the actuating lever abuts the rail in a pressing contact in the other operating states. In the other operating states, the rail and the carriage can essentially be arranged relative to each other as described above for the operating state. However, the other operating states differ from the operating state in that in the other operating states, the actuating lever abuts the rail in a pressing contact by the clamping part, in particular against the first guide part of the rail. Therefore, in the other operating states, sliding of the carriage along the rail in the longitudinal direction is prevented by the pressing contact of the clamping part against the rail.

[0022] Therefore, in the particularly preferred embodiment described above, the clamping part abuts against the rail, thereby generating a braking effect between the rail and the carriage. Particularly preferably, the clamping part is made of plastic. Particularly preferably, the clamping part is made of plastic that, when it contacts the first guide part of the rail with a contact force, generates a higher frictional resistance than the sliding material of which the sliding element is formed, as described in more detail below. Particularly preferably, the clamping part is rounded to avoid damage to the rail due to the pressing contact. Particularly preferably, in the other operating state, the actuating lever is fixedly held in a fixed rotational position about the bearing axis relative to the carriage body. The fixed holding in this fixed rotational position can be achieved, for example, by a locking means between the actuating lever and the carriage body, the actuating arm, or the rail, or by a corresponding design of the respective surfaces of the clamping part and the rail, so that they are in pressing contact with each other. Therefore, the fixed holding or fixed rotational position can preferably only be released by generating an associated release force, whereby rotation of the actuating lever about the bearing axis is only possible starting from the other operating state. After leaving the other operating state, i.e. after releasing said fixed holding or fixed rotation position, the actuating lever can rotate about the bearing axis with a rotation force smaller than the assigned release force.

[0023] In one embodiment, the other operating state can be reached only by rotating the actuating lever around the bearing axis in a predetermined rotational direction starting from the operating state, and the operating state can be reached only by rotating the actuating lever around the bearing axis in the opposite rotational direction starting from the other operating state. In one embodiment, the actuating part of the actuating lever abuts against the third contour of the actuating profile in the other operating state, while in another embodiment, the actuating part is spaced apart from the actuating profile in the other operating state. Generally, preferably, in the other operating state, the actuating part is spaced apart from the third contour or abuts against the third contour with a contact force that is smaller than the pressing force with which the clamping part abuts against the rail to create a pressing contact. The magnitude of the contact force is preferably less than 50%, particularly less than 20%, of the pressing force. Generally, advantageously, the actuating profile has a third contour, and the actuating part is arranged along the third contour in the other operating state. Thus, in the other operating state, the actuating portion extends exclusively, particularly in the longitudinal direction, in the area across which the third profile extends. In contrast, in the operating state, the actuating portion extends exclusively, particularly in the longitudinal direction, in the area across which the second profile extends. When the first guide table is opened for removal of the assigned first guide portion, i.e., in the mounting state, the actuating portion extends exclusively, particularly in the longitudinal direction, in the area across which the first profile extends. Generally, the first, second, and third profile portions are preferably arranged offset from one another in the longitudinal direction. Particularly preferably, the second profile portion is arranged between the first and third profile portions, particularly between the first and third profile portions in the longitudinal direction.

[0024] In one embodiment, the actuating lever in an active state faces the rail with one face perpendicular to the longitudinal direction. This face of the actuating lever facing the rail perpendicular to the longitudinal direction has an extension in the longitudinal direction. The bearing axis is preferably arranged longitudinally offset with respect to the length of this extension of the face of the actuating lever. This can have the particularly advantageous effect that different states of the sliding bearing can be achieved depending on the direction of rotation around the bearing axis. Preferably, the clamping portion of the actuating lever is arranged at a longitudinal end of the face of the actuating lever facing the rail. Particularly preferably, the clamping portion is formed at a longitudinal end of the face of the actuating lever that is in an active state further away from the bearing axis or the axis of rotation, and therefore further away from the center of rotation, than the longitudinal end of the face of the actuating lever opposite thereto.

[0025] Generally, the first guide table preferably surrounds the first guide section over a larger angular range than the second guide table surrounds the second guide section. This allows for easy removal of the second guide section from the second guide table when the first guide section is removed from the first guide table. Preferably, each of the angular ranges extends over 170° or more around the guide axis of the respective guide section. Preferably, the angular range over which the first guide table surrounds the first guide section extends over 200° or more, particularly over 220°, and in particular over 240°. The surrounding is not necessarily uninterrupted over the angular range, but the surrounding is guaranteed over the angular range, so that the guide table forms a movement limit for the assigned guide section over the angular range, and the guide table is physically formed at least at the ends of the angular range.

[0026] In one embodiment, the first guide table is formed by a first receiving portion formed by the actuation arm and a second receiving portion formed by the carriage body. Preferably, the first receiving portion extends along a first transverse plane of the first guide section, and the second receiving portion extends along a second transverse plane of the first guide section, each of the transverse planes facing in the transverse direction, preferably in opposite directions along the transverse direction. Preferably, the first receiving portion extends exclusively along the first transverse plane. Generally, it is preferred that the first and second receiving portions extend in the same overlapping region on one side of the first guide table. This can ensure particularly good guidance of the actuation arm and the carriage body relative to each other. Generally, it is preferred that, for improved guidance, the first receiving portion has a first recess into which a longitudinal portion of the second receiving portion extends, and the recess and the longitudinal portion preferably exist in the overlapping region. Preferably, the longitudinal portion of the second receiving portion is slidably mounted within the recess of the first receiving portion during the above-mentioned displacement of the actuating arm relative to the carriage body, while slidingly contacting the area of ​​the first receiving portion surrounding the recess.

[0027] In one embodiment, a sliding element is arranged on each guide rail constituting the sliding section of the guide rail, against which, in the operating state, the respective associated guide section abuts in sliding contact during longitudinal displacement of the carriage relative to the rail. The sliding element can, for example, be designed in the form of a section of a hollow cylinder, the hollow cylinder contacting with its outer surface the inner surface of the respective guide rail and, in the operating state, facing the associated guide section with its inner surface and abutting in sliding contact with it. The provision and formation of such sliding elements are well known in the art. Preferably, such sliding elements consist of a sliding material. The sliding material used is advantageously a sliding plastic, which in this context is understood to mean a polymer material whose coefficient of friction with the surface of the guide section is lower than that of the material of the carriage body. In particular, this includes thermoplastics such as polyethene (polyethylene), polypropylene, polyacetal, polycarbonate, polyamide, polyvinyl chloride, polytetrafluoroethene (polytetrafluoroethylene), and, in the case of thermosetting materials, phenolic resins. To further reduce friction, these plastics may contain lubricants, especially particulate solid lubricants such as molybdenum disulfide or graphite. Such polymers are known as tribopolymers. Because reduced friction also reduces wear and even abrasion, these products are particularly suitable where high purity is required, such as in the food and semiconductor industries and biochemical and microbiological applications. Polymeric materials may also contain fillers and fibrous materials, for example, plastics or textiles, to improve mechanical properties.

[0028] Particularly preferably, the sliding element arranged in the second guide table, in the operating state, surrounds the second guide section over a larger angular range than the sliding element arranged in the first guide table surrounds the first guide section. Preferably, the angular range over which the sliding element in the second guide table surrounds the second guide section is 140° or more, in particular 160° or more. Meanwhile, the angular range over which the sliding element in the first guide table surrounds the first guide section is less than 160°, in particular less than 140°. Particularly preferably, the sliding element arranged in the first guide table is fixedly arranged exclusively in the second receiving section constituted by the carriage body, and preferably extends exclusively along this second receiving section. Particularly preferably, the first receiving section constituted by the actuating arm is made of sliding material. Preferably, the actuating arm consists entirely, in particular in one piece, of sliding material. Particularly preferably, in the active state, the actuation arm is directly adjacent to the first guide part at the first receiving part, while the sliding element is arranged between the second receiving part and the first guide part. Preferably, the first receiving part has, on its face facing the first guide part, a contour that corresponds to the outer contour of the first guide part facing the first receiving part.

[0029] In one embodiment, the first receiving part and the second receiving part differ in their longitudinal extent by less than 50%. The specified value "50%" refers to the longitudinal extent of the second receiving part. This can ensure uniform guidance of the first guide part in the first guide table. Preferably, the longitudinal extent of the first guide table resulting from the longitudinal extents of the two receiving parts differs from the longitudinal extent of the second guide table by less than 50%. The specified value "50%" refers to the longitudinal extent of the first guide table. Preferably, the difference in the respective longitudinal extents is less than 30%, in particular less than 20%, of the respective longitudinal extents mentioned.

[0030] In one embodiment, the transverse recess opens into at least one of the guide bases, and a sliding element arranged in the guide base extends into the transverse recess, defining its position relative to the carriage body. The transverse recess is thus a recess on the inner surface of the guide base facing the guide section in the operating state, and thus a recess for the surrounding portion of each guide base. By extending the transverse recess, the sliding element arranged in the guide base can be secured to the guide base in any direction, i.e., both in the longitudinal direction and in a direction perpendicular to the longitudinal direction. Preferably, the sliding element is designed to be elastically deformable, allowing it to be inserted into or removed from the guide base only by elastic deformation, and is arranged to engage in the transverse recess with a protrusion in the operating and mounted states of the plain bearing. Generally, the sliding element preferably has a rib extending along the longitudinal direction, which forms the sliding section of the sliding element, so that in the operating state, the sliding element slides into contact with the associated guide section. A longitudinally extending channel may be formed between the ribs. The provision of ribs makes it possible to ensure a particularly advantageous low-friction contact of the sliding element with respect to the guide part, avoiding the influence of contamination.

[0031] Generally, the rail is preferably made of metal, for example aluminum, for example as an extruded profile. Generally, the carriage is preferably made at least partially of metal, in particular aluminum and / or plastic. In one embodiment, at least the base body of the carriage body, in particular the base body and the fixing body of the carriage body, in particular the entire carriage body, is made of plastic or metal, in particular aluminum. In one embodiment, the actuating arm is made of metal, in particular aluminum, or plastic. Particularly preferably, the base body of the carriage body, in particular the entire carriage body, and the actuating arm are made of the same material. In one embodiment, the actuating lever is made of metal, in particular aluminum, or plastic. In one embodiment, the base body of the carriage body, in particular the entire carriage body, the actuating arm, and the actuating lever are made of the same material.

[0032] The invention further relates to a carriage for the plain bearing arrangement according to the invention. The carriage has first and second guide carriages, each extending longitudinally and adjacent to one another, each designed to receive a guide portion of the associated rail in such a manner as to surround the rail and thereby fix the carriage to the rail in a longitudinally displaceable manner. The carriage has a carriage body and an actuation arm, which together constitute a first of the guide carriages. The actuation arm is fixed to the carriage body so as to be guided slidably relative to it in the longitudinal direction, in order to enable opening of the first guide carriage by displacing the actuation arm to remove and / or insert the associated first guide portion from and / or into the first guide carriage along a removal direction perpendicular to the longitudinal direction.

[0033] The invention further relates to the use of a sliding bearing according to the invention. In the use according to the invention, a carriage is mounted on a rail in a longitudinally displaceable manner by first placing the second guide part of the rail in the second guide table of the carriage and then placing the first guide part of the rail in the first guide table of the carriage. In doing so, each of the guide parts is inserted perpendicular to the longitudinal direction into its assigned guide table, and the actuator arm of the carriage is moved in a displacement direction extending perpendicular to the longitudinal direction, starting from a rest position, with the first guide table opened to an extent that the first guide part of the rail can be inserted perpendicular to the longitudinal direction into the first guide table. After both guide parts have been placed in their respective assigned guide tables, the actuator arm is moved in the opposite displacement direction while fixing the carriage perpendicular to the longitudinal direction relative to the rail.

[0034] An embodiment of the present invention will now be described in more detail below with reference to five drawings. [Brief explanation of the drawings]

[0035] [Figure 1] 1A to 1C are schematic diagrams showing an embodiment of a sliding bearing according to the present invention in various states. [Figure 2]1A to 1C are diagrams illustrating an embodiment of a sliding bearing according to the present invention in various states in various schematic diagrams. [Figure 3] 2A-2C are various views of the embodiment according to FIG. 1 in various schematic views during installation; [Figure 4] 1A to 1C show various schematic diagrams illustrating another embodiment of a sliding bearing according to the present invention in various states. [Figure 5] 5A-5C are various views of various components of the embodiment according to FIG. 4 in various schematic diagrams. DETAILED DESCRIPTION OF THE INVENTION

[0036] Each of the plain bearings according to the invention, the carriages according to the invention and the uses according to the invention may have the features described in relation to the plain bearings of the described types, and each of the various embodiments according to the invention may have the features described in relation to the other embodiments according to the invention.

[0037] FIG. 1, consisting of FIGS. 1a, 1b, 1c, and 1d, shows one embodiment of a sliding bearing 1 according to the present invention in various states. The sliding bearing 1 comprises a rail 2 and a carriage 3. The rail 2 has two guide sections 21, 22 extending in a longitudinal direction X, each of which has a cylindrical configuration. In FIG. 1, the guide axes of the guide sections 21, 22 are indicated by + signs. The two guide sections 21, 22 extend parallel to each other in a transverse direction Y perpendicular to the longitudinal direction X and are spaced apart from each other in the transverse direction Y. Since FIG. 1d shows the sliding bearing 1 in operation, the transverse direction Y is shown in FIG. 1d of FIG. 1, and the carriage 3 is held fixed in position perpendicular to the longitudinal direction X relative to the rail 2 and therefore relative to the transverse direction Y, so that the transverse direction Y is fixed relative to both the rail 2 and the carriage 3. The carriage 3 has a first guide table 31 designed to correspond to the first guide section 21 of the rail 2 and a second guide table 32 designed to correspond to the second guide section 22 of the rail 2. Each of the guide tables 31, 32 is designed in the form of a hollow cylinder, which has a side opening in its cylinder jacket, as shown in FIG. 1, for each of the guide tables 31, 32. The web section of the rail 2 extends through this side opening in the operating state, as shown in FIG. 1d, and by means of this web section the guide sections 21, 22 are connected to the rail body of the rail 2. The carriage 3 has a carriage body comprising a base body 34 and a fixing body 35. As can be seen in particular from FIGS. 2 and 3, the fixing body 35 is attached to the base body 34 by means of screws 36.

[0038] The base body 34 and the fixing body 35 together form a guide for the actuating arm 5, which has an actuating handle 51 and a first receiving part 54 that protrude beyond the carriage body in both states of the sliding bearing 1. The first receiving part 54 forms part of the first guide base 31. The guide base 31 is further formed by a second receiving part formed by the base body 34 of the carriage body. In this case, the actuating arm 5 is formed in one piece and consists of a sliding material. In the operating state shown in FIG. 1d, the first receiving part 54 of the actuating arm 5 is directly adjacent to the first guide part 21 of the rail 2, while the first sliding element 41 is arranged between the second receiving part formed by the base body 34 and the first guide part 21. Correspondingly, a second sliding element 42 is arranged between the second guide base 32 and the second guide part 22. 1d, the carriage 3 is guided on the rail 2 so as to be displaceable with low friction in the longitudinal direction X, while being held on the rail 2 in a fixed position perpendicular to the longitudinal direction X. This is ensured by the fact that the guide parts 21, 22 can contact the walls of the guide bases 31, 32 that limit them and can slide along them with low friction exclusively via the sliding members.

[0039] The function of the described embodiment of the sliding bearing according to the invention can be easily seen from the series of views in Figures 1a to 1d. The actuation arm 5 is mounted so as to be displaceable in the displacement direction relative to the carriage body. The actuation arm 5 is movable in the displacement direction relative to the carriage body between a first stop, against which it abuts in Figure 1c, and a second stop, shown in Figure 1c, but against which it abuts in Figures 1a, 1b, and 1d. These stops are formed by the carriage body. In this context, the first-mentioned stop is formed by the fixing body 35, while the other stop 33 is formed by the base body 34, which is generally advantageous according to the invention. In the operating state shown in Figure 1d, the actuation arm 5 abuts against the other stop 33 and is pressed against this stop 33 by a spring device 52 acting on it in the displacement direction. In the operating state, the carriage 3 cannot be removed from the rail 2 perpendicular to the longitudinal direction X. However, as shown in Figure 1c, the operating arm 5 is movable along the displacement direction relative to the carriage body until it abuts against the other stopper 33, thereby opening the first guide table 31 to an extent that the first guide section 21 can be moved out of the first guide table 31 by rotating the carriage 3 around the guide axis of the second guide section 22, as can be seen in combination of Figures 1c and 1b. Subsequently, the carriage 3 can be removed from the rail 2 by removing the second guide section 22 from the second guide table 32, as can be seen in combination of Figures 1b and 1a.

[0040] Figure 2, consisting of Figures 2a, 2b, 2c and 2d, shows various views of the embodiment of the sliding bearing 1 according to Figure 1 in an operating state. Figures 2a and 2b show views of the sliding bearing 1 from different directions. Figure 2c shows the section AA shown in Figure 2a, and Figure 2d shows an enlargement of this section. From Figure 2 it can be seen that a transverse recess 37 opens into the first guide block 31, which recess is provided in the base body 34 and is designed as a hole. This is generally advantageous according to the invention. The first sliding element 41 engages in this transverse recess 37 by means of a protrusion 410, as a result of which the sliding element 41 is held in a fixed position relative to the base body 34 along and perpendicular to the longitudinal direction X. It can also be seen that the first sliding element 41 has ribs extending in the longitudinal direction X, between which channels are formed. The first receiving portion 54 formed by the actuating arm 5 (which receiving portion is manufactured in one piece with the actuating handle 51) is pressed against the other restraining portion 33 by the spring device 52 in the operating state and at the same time approximately abuts the first guide portion 21, and according to the present invention it is generally preferred that it is spaced from the first guide portion 21 by less than 0.1 mm in the operating state.

[0041] 3, which consists of Figures 3a, 3b, 3c and 3d, shows the embodiment according to Figure 1 in an installed state, and Figures 3a, 3b, 3c and 3d correspond to Figures 2a, 2b, 2c and 2d. From a comparison of Figures 2 and 3, it can be seen that in order to achieve the installed state based on the operating state, the actuating arm 5 is moved along a displacement direction relative to the carriage body, thereby For fixing It can be seen that the first guide table 31 is pressed against the stop formed by the body 35. This displacement movement is only possible by overcoming the spring force exerted by the spring device 52. In the mounted state, as explained in FIG. 1, the first guide table 31 is opened to such an extent that the first guide part 21 can be removed therefrom.

[0042] Figure 4, consisting of Figures 4a, 4b and 4c, shows in various schematic diagrams views of another embodiment of a sliding bearing 1 according to the present invention in various states. In Figure 4a, the sliding bearing 1 is shown in an operating state, in Figure 4b in another operating state, and in Figure 4c in an installed state. Figure 5, consisting of Figures 5a, 5b and 5c, shows in schematic diagrams various views of the sliding bearing 1 or components of the sliding bearing 1 in order to illustrate the properties of the sliding bearing 1 according to Figure 4. Figures 4 and 5 will be described together below for the purpose of explaining the embodiment shown in Figures 4 and 5.

[0043] The sliding bearing 1 according to Figures 4 and 5 comprises a rail 2 that is substantially the same as the rail 2 of the embodiment according to Figure 1. The carriage 3 has a carriage body that comprises a base body 34 and a fixing body 35, where the fixing body 35 is made up of two parts and therefore comprises two parts that are spaced apart from each other in the longitudinal direction X. The fixing body 35, i.e. all its parts, are fastened to the base body 34 by screws. The carriage 3 further comprises an actuation arm 5 that is held captively to the base body 34 by the fixing body 35. A guide device is provided between the actuation arm 5 and the carriage body, whereby the actuation arm 5 is fixed to the carriage body so as to be displaceably guided over a displacement path that extends in the transverse direction Y. The guide device is constituted by a first guide part of the carriage body and a second guide part of the actuation arm 5, which are integrally constituted by the base body 34 and the fixing body 35 of the carriage body.

[0044] The configuration of the guide device can be understood particularly by combining Figures 5a, 5b, and 5c. In Figure 5a, the plain bearing 1 is shown as a whole, while in comparison with Figure 5a, Figure 5b shows the plain bearing 1 without the fixing body 35, while Figure 5c shows only the actuation arm 5. When these figures are combined, it can be seen that, as a second guide part of the guide device, the actuation arm 5 forms a groove in which a predetermined part of the fixing body 35 engages as a spring, and that the actuation arm 5 is fixed in its position in the longitudinal direction X by the engagement of the spring in the groove, and is fixed in its position in a direction perpendicular to the longitudinal direction X and the transverse direction Y by the interaction of the base body 34 and the fixing body 35, and is supported so as to be guided in a displaceable manner in the transverse direction Y relative to the carriage body. The guide device forms a stop and an additional stop that form the two ends of a displacement path over which the actuation arm 5 is movable in the transverse direction Y relative to the carriage body in the displacement direction, i.e., in this case, the transverse direction Y. In the installation state shown in Fig. 4c, the actuation arm 5 abuts against a stop on the guide device, and in the operating state shown in Fig. 4a, the actuation arm 5 abuts against an additional stop on the guide device, in this case the contact being made indirectly via an actuation lever 55 which is further surrounded by the carriage 3.

[0045] The carriage 3 of the embodiment of the plain bearing 1 shown in Figures 4 and 5 is provided with an actuating lever 55, which is supported relative to the carriage body on its bearing axle 38 so as to be rotatable about the bearing axle 38. In both the operating state shown in Figure 4a and the other operating state shown in Figure 4b as well as the mounted state shown in Figure 4c, the actuating lever 55 is movable relative to the carriage body exclusively by rotating about the bearing axle 38 and is otherwise fixed relative to the carriage body, which is generally advantageous according to the invention. The actuating lever 55 has an actuating part 551 and the actuating arm 5 has an actuating profile with profiled parts 501, 502, 503. In the operating state shown in Figure 4a, the actuating lever 55 is spaced apart from the rail 2. The actuating lever 55 has a face that faces the first guide part 21 of the rail 2 in the transverse direction Y. 4a, 4b and 4c in combination, the surface of this actuating lever 55 has an extension length in the longitudinal direction X, and the bearing shaft 38 is arranged eccentrically with respect to the longitudinal direction X within said extension length. The longitudinal end of this surface thereby forms the clamping part 552 of the actuating lever 55.

[0046] Various functions are thus achieved by the actuating lever 55. In the operating state shown in FIG. 4a, the actuating lever 55 is held fixed by its actuating part 551, which is locked in the second profile part 502 of the actuating profile of the actuating arm 5. Starting from the operating state, the actuating lever 55 can be rotated in a first direction about the bearing axis 38 to achieve the other operating state shown in FIG. 4b. As shown diagrammatically in FIG. 4b, on its face facing the rail 2 on its longitudinal end forming the clamping part 552, the actuating lever 55 is provided with an excess dimension, so that in the other operating state, the clamping part 552 is pressed and held against the first guide part 21 of the rail 2 by a pressing force acting in the transverse direction Y. This pressing force is accumulated by the actuating lever 55 between the bearing axis 38 of the carriage 3 and the first guide part 21 of the rail 2, which is generally advantageous according to the invention. In this other operating state, the pressing contact of the clamping part 552 results in the inhibition of relative movement between the carriage 3 and the rail 2 in the longitudinal direction X. Thus, in this other operating state, the carriage 3 can be fixed in place on the rail 2, which is generally advantageous in all respects according to the invention.

[0047] As a result, the position of the carriage 3, which is fixed relative to the rail 2, can only be changed, starting from the other operating state shown in Fig. 4b, to achieve the operating state, if the actuating lever is rotated about the bearing axis 38 in a direction reversed from the other operating state, or by generating a very large relative force longitudinally between the carriage 3 and the rail 2, which is not normally applied or intended. On the other hand, the actuating lever 55 can be used to achieve the installing state shown in Fig. 4c, starting from the operating state shown in Fig. 4a, by rotating the actuating lever 55 about the bearing axis 38 in the opposite direction, i.e., opposite to the rotation required to achieve the other operating state. In response to this rotation, the actuating part 551 slides along the operating profile of the actuating arm 5, thereby generating a relative force in the transverse direction Y between the carriage body and the actuating arm 5, which force displaces the actuating arm 5 in the transverse direction Y relative to the carriage body, until the installing state shown in Fig. 4c is reached. In this mounting state, the actuating arm 5 abuts against a stop formed by the guide device, the actuating part 551 is held against this profile 501 in the first profile 501, which exerts a restoring force on the actuating part 551 and thus on the actuating lever 55 due to the spring device 52. The mounting state shown in Fig. 4c is therefore achieved in such a way that it can only be maintained by applying an external force to the actuating lever 55. When this external force is removed by the action of the spring device 52, rotating the actuating lever 55 around the bearing axis 38, the operating state shown in Fig. 4a can be achieved again automatically, starting from the mounting state. This is generally advantageous according to the invention. [Explanation of symbols]

[0048] 1. Plain bearing 2 Rails 3 carriages 5 Actuating Arm 21 Guide section 22 Guide section 31 First guide table 32 Second guide table 33 Stop part 34 Base body 35 Fixing body 36 screws 37 First Transverse Recess 38 Bearing shaft 41 first sliding element 42 second sliding element 51 Operating handle 52 Spring Device 54 First receiving part 55 Operating lever 410 Protrusion 501 Contour 502 Contour 503 Contour 551 Operating unit 552 Clamp part X Longitudinal direction Y transverse direction

Claims

1. A carriage (3) for a plain bearing (1), the carriage (3) having first and second guide blocks (31, 32), each extending long and adjacent to one another in a longitudinal direction (X), each designed to receive a guide portion of the rail (2) assigned to it respectively, in an operating state, while fixing the carriage (3) to the rail in a longitudinally displaceable manner by surrounding the guide portion (21, 22), The carriage (3) has a carriage body and an actuating arm (5) which together constitute a first guide table of the guide tables (31, 32), and the actuating arm (5) is configured to remove the assigned first guide portion (21, 22) from the first guide table (31, 32) along a removal direction extending perpendicular to the longitudinal direction (X) or to introduce the assigned first guide portion (21, 22) relative to the first guide table (31, 32) along a removal direction extending perpendicular to the longitudinal direction (X) by displacing the actuating arm (5). and a guide device is fixed to the carriage body so as to be displaceably guided relative to the carriage body to enable opening of the first guide base (31, 32), the guide device forming a stop defining an end of a displacement path, the actuating arm (5) being displaceable relative to the base body (34) along the displacement path starting from the operating state until it reaches the stop, forming an opening in the first guide base, from which the first guide base can be removed when the actuating arm (5) is in contact with the stop.

2. 1. A sliding bearing (1) comprising: a rail (2) and a carriage (3) as defined in claim 1, wherein the rail (2) has two guide sections (21, 22) extending long and adjacent to each other in a longitudinal direction (X), the rail (2) has a rail body, each of the guide sections is connected to the rail body via a web section, each of the guide tables has a side opening continuous in the longitudinal direction, and in the operating state, the web section extends through the side opening, and in the operating state, each of the guide sections (21, 22) is arranged on the guide table (31, 32) assigned to the guide section and is surrounded by the guide table perpendicular to the longitudinal direction (X), while fixing the carriage (3) perpendicular to the longitudinal direction (X) relative to the rail (2) and ensuring longitudinal displaceability of the carriage (3) relative to the rail (2).

3. 3. The sliding bearing (1) according to claim 2, wherein the carriage body comprises a base body (34) and a fixing body (35) that are removably fixed to each other, and the actuation arm can be separated from the carriage body only after the base body (34) and the fixing body (35) have been detached from each other.

4. 4. The sliding bearing (1) according to claim 3, wherein the guide device is constituted by the base body (34) and the fixing body (35), and the guide device is a linear guide device along a transverse direction (Y) extending perpendicular to the longitudinal direction (X).

5. 3. The sliding bearing (1) according to claim 2, wherein the actuating arm (5) abuts against the stop, an opening is formed in the first guide base (31) through which the first guide part (21) can be removed, and the guide bases (31, 32) and the guide parts (21, 22) are designed to correspond to one another in such a way that the second guide part (22) can be removed from the second guide base (32) perpendicular to the longitudinal direction only after the first guide part (21) has been removed from the first guide base (31).

6. 3. The sliding bearing (1) according to claim 2, wherein each of the two guide parts (21, 22) extends along a guide axis assigned thereto and extending in the longitudinal direction (X), wherein abutment of the actuating arm (5) against the stop part of the guide device is achieved starting from the operating state, wherein the second guide part (22) is supported for rotation about its guide axis in the second guide table (32), and wherein the first guide part (21) is removable from the first guide table (31) by rotation of the carriage (3) about the guide axis of the second guide part (22).

7. 3. The sliding bearing (1) according to claim 2, wherein the rail (2) has a rail body, each of the guide sections (21, 22) is connected to the rail body via a web section, each of the guide bases (31, 32) has a side opening that is continuous in the longitudinal direction (X), and in the operating state, the web section extends through the side opening to the guide section (21, 22) arranged on the guide base (31, 32), and the web section has a width that is narrower than that of the guide sections (21, 22) in a direction perpendicular to the longitudinal direction (X), and the side opening of the first guide base (31, 32) has a width that is narrower than the width of the first guide section (31) assigned to it in the operating state, and when the actuating arm (5) abuts the stop section of the guide device, the width of the side opening is equal to or greater than the width of the first guide section (21).

8. 3. The sliding bearing (1) according to claim 2, wherein the guide device comprises a spring device (52) that applies a spring force along the displacement path against the actuating arm (5) facing the base body (34) in a direction away from the stop.

9. 3. The plain bearing (1) according to claim 2, wherein the guide device has a further stop (33) that defines an end of the displacement path opposite to the end.

10. 3. A sliding bearing (1) according to claim 2, wherein the carriage (3) comprises an actuating lever (55) supported relative to the carriage body for rotation about a bearing axis (38), and wherein the actuating arm (5) is displaceable by the actuating lever (55), starting from the operating state, by rotating the actuating lever (55) about the bearing axis (38) to enable opening of the guide bases (31, 32).

11. 11. The sliding bearing (1) according to claim 10, wherein the actuating arm (5) has an actuating profile, the actuating lever (55) has an actuating portion (551) corresponding to the actuating profile, the actuating portion (551) is movable along the actuating profile by rotating the actuating lever (55) around the bearing axis (38), and the actuating portion (551) abuts against a first profile portion (501) of the actuating profile when the first guide bases (31, 32) are opened to remove the first guide portions (21, 22).

12. 12. The plain bearing (1) according to claim 11, wherein the actuation profile has a second profile portion (502) against which the actuation portion (551) abuts in the operating state.

13. 11. The sliding bearing (1) according to claim 10, wherein the actuating lever (55) has a clamping portion (552), which is spaced apart from the rail (2) in the operating state and is rotatable around the bearing axis (38) starting from the operating state while achieving other operating states, wherein in the other operating states each of the guide portions (21, 22) is arranged in the guide base (31, 32) assigned to it and is surrounded by said guide base perpendicular to the longitudinal direction (X), and wherein the clamping portion (552) of the actuating lever (55) abuts the rail (2) in pressing contact.

14. 11. The sliding bearing (1) according to claim 10, wherein in the operating state, the actuating lever (55) faces the rail (2) by a plane perpendicular to the longitudinal direction (X), said plane of the actuating lever (55) having an extension length in the longitudinal direction (X), and the bearing axis (38) is arranged eccentrically with respect to said extension length in the longitudinal direction (X).

15. The actuating arm (5) has an actuating profile, and the actuating lever (55) has an actuating portion (551) corresponding to the actuating profile; the actuation profile has a second profile portion (502) against which the actuation portion (551) abuts in the operating state; 14. The plain bearing (1) according to claim 13, wherein the actuation profile has a third profile portion (503), and the actuation portion (551) is arranged along the third profile portion (503) in the other operating state.

16. 3. The sliding bearing (1) according to claim 2, wherein the first guide base (31) surrounds the first guide portion (21) over a larger angular range than the second guide base (32) surrounds the second guide portion (22).

17. 3. The sliding bearing (1) according to claim 2, wherein the first guide base (31) is constituted by a first receiving portion (54) constituted by the actuating arm (5) and a second receiving portion constituted by the carriage body, the first receiving portion (54) extending on a first cross-sectional side of the first guide portion (21) and the second receiving portion extending on a second cross-sectional side of the first guide portion (21), and / or the first receiving portion (54) has a recess into which a longitudinal portion of the second receiving portion extends.

18. 3. The sliding bearing (1) according to claim 2, wherein each sliding element (41, 42) is arranged in each guide base (31, 32), the sliding elements constituting sliding parts of the guide bases (31, 32), and the respectively assigned guide parts (21, 22) abut in a sliding manner against the sliding parts during longitudinal displacement of the carriage (3) relative to the rail (2) in the operating state.

19. 18. The sliding bearing (1) according to claim 17, wherein each sliding element (41, 42) is arranged in each guide base (31, 32), and in the first guide base (31), the sliding element (41) is arranged exclusively in the second receiving portion, and the first receiving portion (54) consists of a sliding material.

20. 18. The plain bearing (1) according to claim 17, wherein the longitudinal extensions of the first receiving portion (54) and the second receiving portion differ by less than 50% relative to the longitudinal extension of the second receiving portion.

21. 19. The plain bearing (1) according to claim 18, wherein a transverse recess (37) opens into at least one of the guide bases (31, 32), and the sliding element (41, 42) arranged in the guide base (31, 32) extends into the transverse recess (37) while fixing the position of the sliding element (41, 42) relative to the carriage body.

22. Use of a plain bearing (1) according to any one of claims 2 to 20, The carriage (3) is attached to the rail (2) in a longitudinally displaceable manner by first arranging the second guide portion (22) of the rail (2) on the second guide base (32) of the carriage (3), and then arranging the first guide portion (21) of the rail (2) on the first guide base (31) of the carriage (3), and each of the guide portions (21, 22) is inserted perpendicular to the longitudinal direction (X) into the guide base (31, 32) respectively assigned thereto, and the operating arm ( 5) is moved in a displacement direction extending perpendicular to the longitudinal direction, starting from a rest position, while opening the first guide base (31) to an extent that the first guide part (21) of the rail (2) can be inserted perpendicular to the longitudinal direction into the first guide base (31), and after both guide parts (21, 22) are placed in the guide bases (31, 32) respectively assigned to them, the actuating arm (5) is moved in the opposite direction to the displacement direction while fixing the carriage (3) perpendicular to the longitudinal direction (X) relative to the rail (2).

23. A sliding bearing (1) as described in Claim 13, wherein in the other operating state, the actuating lever (55) is fixedly held in a fixed rotational position around the bearing axis (38) relative to the carriage body.

Images