Retracting device and sliding door device

Abstract

The retraction device (2), which is provided for a sliding door device (100), comprises a mounting body (20) which can be connected to a stationary mounting body (3), at least one permanent magnetic retraction magnet (21) which is held by the mounting body (20), at least one metal profile (12A, 12B) which consists of ferromagnetic material which can be connected to the sliding door (1) and which can interact with the at least one retraction magnet (21) when the sliding door (1) is moved.According to the invention, a sliding door (1) is provided which is displaceable along a displacement axis (x), which has a leading end face (11F) and a trailing end face (11R) as well as a receiving groove (10) which extends from a first end to a second end parallel to the displacement axis (x) and which has a first and second side wall (10S) which are opposite each other, wherein the mounting body (20) with the at least one retraction magnet (21) projects into the receiving groove (10), and the at least one metal profile (12A, 12B) is arranged and fastened within the receiving groove (10).

Description

[0001] The invention relates to a retraction device for a sliding door device and to a sliding door device equipped with at least one such retraction device.

[0002] US9009918B2 discloses a retraction device for a sliding door device by means of which a sliding door can be moved automatically and dampened into an end position along a running rail.

[0003] Retraction devices of this type typically comprise a retraction spring, a retraction damper, and at least one coupling slide connected to the damper and the retraction spring. This slide can be moved along a guide track into a locking section and can be coupled to an activation element held stationary by the track. When the sliding door is pulled out from its end position, the coupling slide is engaged by the activation element, guided along the guide track into the locking section, disengaged from the activation element, and held locked in the locking section. When the sliding door retracts towards its end position, the coupling slide is again engaged by the activation element and released from the locking section, thus releasing the retraction spring and pulling the sliding door into its end position.The retraction damper counteracts this retraction process caused by the retraction spring in such a way that the sliding door is guided in a controlled manner to the end position and impact noises are avoided.

[0004] These types of retractable door mechanisms are complex in design, involve corresponding manufacturing costs, are subject to wear and tear, and are bulky, requiring a relatively large amount of installation space. Furthermore, they are relatively complex to install, as each mechanism must be connected to a drive unit, and a separate activation element, which operates the mechanism, must be mounted in the track. The activation element must be positioned so that the sliding door is guided correctly into its end position. If the retractable door mechanism is connected to the drive unit, sufficient space must be provided in the area of ​​the track. The drive unit and the retractable door mechanism must also be covered to prevent them from being obtrusive.If the retraction device is mounted in a stationary position and the activation element is connected to the drive, sufficient space must be provided in the sliding door device for the installation of the retraction device.

[0005] WO2020187863A1 discloses a sliding door system with a track, at least two carriages guided in the track and supporting a sliding door, and a retraction device comprising a permanent magnetic metal rod and a ferromagnetic metal body with a receiving channel into which the metal rod can be inserted along a displacement axis. One of the carriages is connected to the metal rod or the metal body and is displaceable with the metal rod against the metal body or vice versa. This retraction device also requires a relatively large amount of space and results in relatively high manufacturing and installation costs. The carriage to be connected to the metal rod or the metal body must be designed accordingly and, if necessary, equipped with a retaining device.Furthermore, the metal rod and the metal body must be correctly aligned with each other so that the metal rod is correctly inserted into the receiving channel and collisions and damage are avoided.

[0006] This device is also not easily integrated with a damping mechanism. For example, a longer rod is used that extends over the retraction mechanism and interacts with an installed damping device. This results in a complex setup requiring considerable space.

[0007] Both types of described retraction devices share the additional disadvantage that they must be adapted to the respective sliding door arrangement, or adapted retraction devices or adapted holding devices must be provided by means of which the retraction devices can be connected to the drive or to the running rail.

[0008] Furthermore, both types of soft-close mechanisms present the additional problem that they can only be installed with considerable effort if the track runs into an already finished door frame. In this case, mounting the soft-close mechanism or parts of it inside the door frame is virtually impossible without removing a side panel. Problems also arise if parts of the soft-close mechanism located inside the door frame need to be adjusted, maintained, or replaced.

[0009] The described retraction devices allow a sliding door to be automatically moved into an end position. If the sliding door is to be automatically pulled into an end position at both ends of its track, two retraction devices and two damping devices are typically required, effectively doubling the effort. It is not possible, however, to pull the sliding door into an intermediate position between the two end positions.

[0010] The present invention is therefore based on the objective of creating an improved retraction device for a sliding door device and an improved sliding door device with such a retraction device.

[0011] The retraction device should allow the sliding door to be automatically pushed into a first and / or second end position, and if necessary also into an intermediate position between these end positions, and held there.

[0012] The feed device should be simple in design, inexpensive to manufacture, and operate without wear and tear or maintenance.

[0013] The closing mechanism should be easy to install and also require minimal repair or maintenance later on. The use and individual positioning of activation elements should be avoided. Even with sliding door systems that already have a door frame, installation and maintenance of the closing mechanism should be straightforward. Adapting the closing mechanism to different sliding door systems should be unnecessary or achievable with minimal effort.

[0014] The retraction device should allow the sliding door to be moved into a final position, preferably with damping, at one or both ends of its track. The effort required to implement a retraction device that allows a sliding door to be pulled into its final position at both ends of its track should not be significantly greater. Preferably, the use of two retraction devices and two damping devices to pull the sliding door into its final position at both ends of its track should be avoided.

[0015] The retraction mechanism should also allow for the advantageous implementation of additional functions, such as damping the sliding door's movement, precise guidance of the sliding door, and / or easy handling of the sliding door when lowered into a door recess or parking space. Even with these additional functions implemented, the retraction mechanism should require little to no extra space and therefore be as compact as possible.

[0016] In particular, the retraction device should be easily equipped with a damping device of the simplest possible design, which is preferably active in both end positions of the sliding door and requires minimal space.

[0017] The retraction device, both on its own and when equipped with other functional units, should take up as little space as possible, so that the sliding door device can be optimally implemented and is subject to only a few restrictions.

[0018] The retraction device should also be mountable on the top or bottom of the sliding door.

[0019] The sliding door device should be able to have one or more sliding doors which can be automatically moved into an end position or into a first or second end position at both ends of a running path by means of a retraction device according to the invention.

[0020] The sliding door should be able to be moved or retracted into a parking space, for example in front of a wall or into a door recess.

[0021] This problem is solved by a retraction device according to claim 1 and a sliding door device according to claim 13. Advantageous embodiments of the invention are specified in further claims.

[0022] The retraction device, which is intended for a sliding door device, includes a mounting body that can be connected to a stationary mounting body, for example a wall, the walls of a door compartment or the floor, at least one permanent magnetic retraction magnet held by the mounting body, at least one metal profile made of ferromagnetic material that can be connected to the sliding door and that, when the sliding door is moved, can interact with the at least one retraction magnet to pull the sliding door into a provided position, optionally an end position or an intermediate position.

[0023] According to the invention, a sliding door is provided which is displaceable along a displacement axis, which has a leading end face and a trailing end face and, preferably on the underside, a receiving groove which extends from a first end to a second end parallel to the displacement axis and which has a first and second side wall which are opposite each other, wherein the mounting body with the at least one retraction magnet projects into the receiving groove, and the at least one metal profile is arranged and fastened within the receiving groove.

[0024] The sliding door with the receiving groove is therefore part of the retraction device, which is why the retraction device according to the invention hardly takes up any additional space. The retraction device is largely integrated into the sliding door. The mounting body projects into the receiving groove, which is why the retraction device takes up practically no space and the sliding door device can be implemented without the restrictions caused by previous retraction devices.

[0025] The retraction device can also fulfill other functions, such as damping the movement of the sliding door and / or providing stable guidance of the sliding door and / or facilitating the operation of the sliding door, moving it into a door compartment and retracting it from the door compartment.

[0026] The retraction mechanism allows for the automatic retraction of the sliding door to one or both end positions with ease and convenience. Additionally, intermediate positions can be defined at which the sliding door can be automatically stopped, enabling the doorway to be fully opened or opened only a defined amount by adjusting the sliding door's position.

[0027] For this purpose, metal profiles are inserted into the receiving groove at the ends of the receiving groove and, if necessary, at an intermediate position between the ends of the receiving groove, in such a way that the groove cross-section of the receiving groove is not reduced or not disruptively reduced and / or the mounting body can pass through the entire receiving groove, if necessary.

[0028] The at least one metal profile is held in the receiving groove by a force-fit and / or form-fit connection, so that it is not dislodged from its anchoring by the magnetic force of the pull-in magnet. The metal profiles are preferably mounted in the receiving groove by form-fit connection, by being countersunk into an enlarged recess of the receiving groove. The metal profiles can also be fastened using screws and / or adhesive.

[0029] The at least one metal profile is adapted to the receiving groove and can be of any desired shape and design. Preferably, the at least one metal profile comprises at least one flat, rounded, or curved metal plate, or two parallel flat, rounded, or curved metal plates. In particularly preferred embodiments, the at least one metal profile is U-shaped and can be positioned in the receiving groove, which preferably has a rounded or rectangular cross-section, such that the cross-section of the receiving groove remains constant. For this purpose, the receiving areas in the receiving groove, in which the metal profiles are inserted, are enlarged accordingly. Ideally, the cross-section of the metal profiles and the cross-section of the receiving groove are identical. After inserting one or more metal profiles, a uniform cross-section is therefore present over the entire length of the receiving groove.

[0030] Preferably, the at least one metal profile comprises two flat or rounded side pieces connected to each other by a flat or rounded head piece, which cover the retracted draw-in magnet of the draw-in device on three sides, thereby achieving optimal magnetic interaction and a correspondingly high pulling force.

[0031] The length of the at least one metal profile or profiles is preferably selected to correspond to the length of the feed magnet, optionally shorter, but preferably longer by a factor of 1.1 to 1.5. The feed magnet, for example, has a length of 5 cm to 10 cm.

[0032] In preferred embodiments, a stop plate is attached to the end piece of the metal profiles, against which a stopper or damping device can strike when the sliding door is automatically moved into the end position. Such a damping device can advantageously be integrated into the retraction mechanism.

[0033] If a metal profile is only arranged at one end of the receiving groove, the sliding door can be moved into the corresponding end position either when opening or when closing the sliding door.

[0034] In preferred embodiments, a metal profile is provided at each end of the receiving groove, so that the sliding door is automatically guided into the respective end position when opening and closing.

[0035] The inventive retraction device can additionally serve advantageously as a guide device, for example as a so-called floor guide, by means of which the underside of the sliding door is guided precisely and preferably without play. Preferably, the mounting body holds at least one first guide element facing the first side wall of the receiving groove, and at least one second guide element facing the second side wall of the receiving groove.

[0036] The guide elements can be, for example, sliding elements or guide rollers. The guide elements can be integrally connected to the mounting body and designed, for example, as elastic wings or roller holders. Alternatively, the mounting body can be connected to at least one guide device that holds sliding elements or guide rollers.

[0037] The at least one retraction magnet can be held by the mounting body in various ways. For example, the mounting body can have a recess in which the at least one retraction magnet is held by fasteners, either magnetically or mechanically, such as by a press fit or locking elements.

[0038] Preferably, the mounting body has a magnetic channel running parallel or coaxially to the device axis, in which the at least one insertion magnet is held. The insertion magnet or magnets can therefore advantageously be inserted into the magnetic channel and secured. For example, locking devices are provided that engage with the insertion magnet or with adjacent device parts. Alternatively, a closure can be provided by means of which the magnetic channel is closed and the at least one insertion magnet is enclosed. The magnetic channel is preferably closed at one end, so that only one opening of the magnetic channel needs to be closed.

[0039] In a preferred embodiment, at least one guide device with a bearing body and guide elements, for example guide rollers or elastic wings, is additionally provided in the magnetic channel. The guide elements protrude, for example, from window openings provided in the magnetic channel. Guide devices with elastic wings are particularly advantageous; these are compressed within the magnetic channel and can extend outwards after reaching the window openings, and are preferably integrally molded onto the bearing body.

[0040] In a particularly preferred embodiment, the at least one retraction magnet is held between two guide devices which are held in the magnetic channel and preferably anchored or latched.

[0041] The mounting body is preferably made of a plastic, for example an elastomer or thermoplastic such as POM, which has high stability and also good sliding properties.

[0042] The at least one pull-in magnet is preferably a hard magnet made of hard magnetic materials such as cobalt-samarium or neodymium-iron-boron. The pull-in magnet can also consist of several individual magnets.

[0043] Preferably, the at least one insertion magnet, or at least one of the insertion magnets, is polarized perpendicular to the device axis and / or perpendicular to the side walls of the receiving groove. If the insertion magnet is composed of several individual magnets, a polarity reversal between the individual magnets or groups of individual magnets is preferably provided. For example, the polarity alternates from individual magnet to individual magnet or groups thereof, stepwise by 90° or 180°.

[0044] In preferred embodiments, the receiving groove is completely or partially closed at the first or second end either by an end element of the sliding door or by a stop plate of the metal profile inserted therein. The receiving groove can therefore be continuous from end face to end face or may not extend completely to the end face at one or both ends. It is particularly advantageous to provide a continuous receiving groove and to insert metal profiles on one or both sides, which have a stop plate that projects into the groove cross-section and serves to limit the travel path of the sliding door.

[0045] The retraction device therefore preferably also serves as an end stop for the sliding door in one or the other direction of movement, or in both directions. To prevent the sliding door from slamming shut, the retraction device is preferably equipped on one or both sides with elastic stop elements and / or with at least one damping device. The damping device preferably comprises two damper parts, each essentially consisting of a slidably mounted piston oriented in opposite directions towards assigned end positions, and acting on a common spring element and a common damping element. For example, when the damping pistons move together, a gaseous medium is displaced from the damping device. The damping device is therefore exceptionally simple in design and inexpensive to manufacture.

[0046] The mounting body can be connected to a stationary body, such as a building floor, a building ceiling, or the walls of a door frame, in any desired manner. A mounting device is provided for mounting the mounting body; this device is either integrated into the mounting body or connected to it. For example, the mounting body is integrally provided with mounting elements that are screwed or otherwise connected to the floor, ceiling, or walls of a door frame. In preferred embodiments, the mounting device is separate from the mounting body and preferably positively interlocking with it. The mounting device has mounting elements that are screwed or otherwise connected to the floor, ceiling, or walls of a door frame.The mounting elements integrated into the mounting body or connected to the mounting device are preferably designed such that they can be connected to the end faces of the door compartment walls. For example, the mounting elements are angled vertically outwards from the mounting body or the mounting device so that they overlap the respective end face of the facing door compartment wall and can be easily screwed to it.

[0047] The arrangement of the retraction device at the exit of the door compartment has the advantage that the retraction device can be easily installed or uninstalled, even after the door compartment has already been created.

[0048] In a preferred embodiment, the sliding door can be moved from an end position, in which it has already been engaged by the retraction mechanism, into a park position by manual force and released from the park position again by further manual force. In preferred embodiments, the end faces of the sliding door and the door frame walls are at the same height or in the same plane in the park position, so that the door opening is fully open. In the park position, the sliding door is no longer visually apparent and cannot be manually grasped without additional aids. Only by manually applying force to the end face of the sliding door can it be released from the park position, automatically moved into the end position, and then manually grasped and operated.

[0049] To enable the sliding door to be moved from the end position to the parked position and back again, the mounting body is slidably mounted on the mounting fixture parallel to the fixture axis. An ejection device is also provided. The ejection device comprises an ejection cylinder, a push rod slidably mounted within the ejection cylinder parallel to the fixture axis and extendable from the ejection cylinder, an ejection spring acting on the push rod, and a locking device connected to the push rod. This locking device can be cyclically locked and unlocked by applying force to the push rod after it has been retracted.Ejection devices of this type are available on the market and function on the principle of a ballpoint pen, whose writing element can be moved into a working position by applying force and released from the working position by applying further force. A cyclically operating locking device with an extendable piston is known, for example, from US4792165A.

[0050] The telescopically designed ejection device is preferably held within an ejection channel by the mounting body and interacts via the push rod with an auxiliary stop, which is preferably provided on the mounting device. With sufficient force, the mounting body can be moved against the auxiliary stop of the mounting device, overcoming the force of the ejection spring. This pushes the rod into the ejection cylinder, compressing and energizing the ejection spring. After the mounting body has been fully displaced, the push rod is locked by the connecting device and is only released again after a further force is applied.This process is initiated by manually manipulating the sliding door, which has been moved by the retraction mechanism into its final position. In this position, the facing metal profile reaches the damping device, and the mounting bracket can then be moved manually until the push rod is inserted into the ejection cylinder and locked. After this process, the sliding door is in its parked position within the door frame, barely visible, and cannot be manually accessed. Only by applying force again can the sliding door be released from its parked position. The energy released by the ejection spring, corresponding to the length of the push rod, then extends it back into its final position, where it can be manually accessed again.

[0051] Preferably, the mounting device holds a rail plate, either fixedly or detachably, which has guide rails that engage in guide grooves provided in the mounting body. The guide grooves are preferably open on only one side, so that the mounting body can be inserted into the guide rails from one side until the guide rails reach the end of the guide grooves. The mounting body cannot therefore detach itself from the rail plate in this direction. To facilitate the connection of the rail plate to the mounting body, the rail plate is preferably detachable from the mounting device and, after being connected to the mounting body, can be connected to the mounting device, for example, by inserting it into a mounting opening provided therein.

[0052] The retraction device can be implemented with any sliding door, preferably one provided by the user with a receiving groove. Therefore, the retraction device is normally supplied as an installation kit without a sliding door.

[0053] The sliding door device can be configured in any desired form and, if required, equipped with a retraction device according to the invention. Due to the advantageous mounting options, the retraction device can also be retrofitted to existing sliding door devices. The sliding door devices can be configured in any way and may have one or more sliding doors, each of which can be equipped with a retraction device. Furthermore, the sliding door devices can be provided with or without a door compartment.

[0054] Typically, the inventive retraction device is mounted on the underside of the sliding door, either on the floor or on the door frame walls, or connected to the end faces of the door frame walls. The inventive retraction device can therefore also advantageously serve as a floor guide.

[0055] The invention will now be explained in more detail with reference to exemplary embodiments shown in the drawings. These show: Fig. 1a a sliding door device 100 according to the invention, which is connected to a retraction device 2 according to the invention, comprising a retraction magnet 21, ferromagnetic metal profiles 12A, 12B cooperating with the retraction magnet 21 and a sliding door 1 which can be inserted into a door compartment 3 and which is shown in a position in which it is held by the retraction device 2 in an end position from which it can be manually moved into a park position by applying force and released from it again; Fig. 1b the sliding door device 100 of Fig. 1a with the sliding door 1 in the parked position within the door compartment 3, from which it can be manually released by a further force; Fig. 1c the sliding door 1 held by any guide device 9 of Fig. 1a und 1b after exiting against a door frame 4 and closing an associated door opening 40; Fig. 2 the sliding door device 100 of Fig. 1a with the door compartment 3 and the sliding door 1 in a sectional view and with the retraction device 2, which comprises ferromagnetic metal profiles 12A, 12B which are inserted or will be inserted in a receiving groove 10 on the underside 11B of the sliding door 1; Fig. 2b the sliding door device 100 of Fig. 1c with the door compartment 3 and the sliding door 1 in a sectional view, with the second metal profile 12B taken from the receiving groove 10; Fig. 3 shows the retraction device 2 in a preferred embodiment with the mounting device 29 detached from it and a part of the sliding door 1 shortly before reaching the end position of Fig. 1a , in which the draw-in magnet 21 interacts with the second metal profile 12B; Fig. 3b the draw-in device 2 in the embodiment of Fig. 3a with the detached mounting device 29 and a part of the sliding door 1 in the end position of Fig. 1c , in which the draw-in magnet 21 interacts with the first metal profile 12A; Fig. 4 shows a preferably configured draw-in device 2 Fig. 3a without metal profiles 12A, 12B in exploded view, with the mounting body 20, with two differently polarized insertion magnets 21, with two guide devices 23 which together with one of the insertion magnets 21 can be inserted into a magnetic channel 201 in the mounting body 20, with a double-sided damping device 22 which can be inserted into the mounting body 20, and with an ejection device 24 which can be inserted into an ejection channel 204 in the mounting body 20; Fig. 4b the insertion device 2 of Fig. 4a from the other side after inserting one of the retraction magnets 21 and the two guide devices 23 into the magnet channel 201 and with the ejection device 24 completely removed from the ejection channel 204; Fig. 5 shows the retraction device 2 without the sliding door 1 of Fig. 1b in the park position, in which the second damper part 22b of the damping device 22 was actuated by means of the second metal profile 12B and the stop collars 221A, 221B rest against the first bearing sleeve 202A; Fig. 5b the retraction device 2 without the sliding door 1 of Fig. 1b in the end position, in which the sliding door 1 is fully extended and the first damper part 22B of the damping device 22 has been actuated and the stop collars 221A, 221B are in contact with the second bearing sleeve 202B; Fig. 6 the sliding door device 100 of Fig. 1a with the door compartment 3 and the sliding door 1 in sectional view; Fig. 6b the sliding door device 100 of Fig. 1b with the door compartment 3, the sliding door 1 and the mounting body 20 in sectional view; and Fig. 7 the mounting body 20 of the retraction device 2 of Fig. 3a with the assembly channel 201, in which the feed magnet 21 is held between two guide devices 23, and with the ejection channel 204, into which the ejection device 24 is inserted.

[0056] Fig. 1a Figure 1 shows a sliding door device 100 according to the invention, which is equipped with a retraction device 2 according to the invention, comprising a retraction magnet 21, metal profiles 12, 12B cooperating with the retraction magnet 21, and a sliding door 1. The sliding door can be inserted into a door compartment 3 and is shown in a position in which it is held in an end position by the preferably configured retraction device 2, from which it can be moved into a park position by manual force and released from it again.

[0057] Door compartment 3 comprises two door compartment walls 3A, 3B, which are connected at the rear and enclose a parking space 30. The sliding door 1 has a top 11T, a bottom 11B, a leading edge 11F, a trailing edge 11R and a receiving groove 10 extending along the underside of the sliding door 1.

[0058] By extending the sliding door 1, a door opening 40 can be closed, which is preferably limited by a door frame.

[0059] The retraction device 2 is mounted on the underside of the sliding door 1. This device pulls the sliding door 1 into its end position and retracts it almost completely into the door compartment 3. As illustrated, the sliding door 1 can be moved manually from its end position to a parked position. Alternatively, the retraction device 2 can be configured and arranged so that the sliding door 1 can be moved automatically to its parked position by means of the retraction device 2. In this case, the end position and the parked position coincide, and manual intervention is no longer required to move the sliding door 1 from its end position to its parked position.

[0060] Fig. 1b Figure 1 shows the sliding door 1 after it has reached the parked position. In the parked position, the end face 11F is at the same height as the end faces of the door compartment walls 3A and 3B and is therefore inaccessible to the user's manual access. An operating element 190 is shown as an example, which can be rotated out from the end face 11F of the sliding door 1 and engaged to pull the sliding door 1 out of the parked position.

[0061] In preferred embodiments, however, it is provided that the sliding door 1 is in the position of Fig. 1a by manual force into the park position of Fig. 1b transferred and, by renewed manual force, neither moved from the park position to the position of Fig. 1a can be transferred, in which the sliding door 1 can again be manually detected and pulled against the door opening 40.

[0062] Fig. 1c shows the sliding door 1 held by any guide device 9 of Fig. 1a After exiting against a door frame 4 and closing the door opening 40, the guide device 9 can, for example, comprise a running rail 91 and carriages 92, which are guided in the running rail 91 and connected to the sliding door 1 by mounting devices. The guide device 9 can also be a telescopic device with an extendable mounting part that is connected to the sliding door 1. The retraction device 2 is mounted on the floor and preferably also serves as a guide device for the stable axial guidance of the sliding door 1.

[0063] The sliding door device 100 from Fig. 1c It can also be rotated 180° so that the retraction device 2 is mounted on the top of the sliding door 1, for example on the ceiling. In this case, the sliding door 1 is supported at the bottom, for example by rollers and / or magnetically.

[0064] Essential for the inventive retraction device 2 is that it allows the sliding door 1 to be automatically pulled into an end position on one and / or the other side of the running path of the sliding door 1 and / or into an intermediate position between the two end positions.

[0065] Further embodiments of the feed device 2 are advantageously supplemented with a damping device and / or with guide devices and / or with an ejection device, and are provided according to the user's requirements. The preferably employed damping device is preferably active in both end positions and has damping elements or damping pistons that preferably act on a common spring element and / or on a common damping element, for example, displacing a gaseous medium.

[0066] Fig. 2a The sliding door device shows 100 of Fig. 1a with the door compartment 3 and the sliding door 1 in a sectional view and with the retraction device 2, which comprises at least one retraction magnet 21 and ferromagnetic and / or permanent magnetic metal profiles 12A, 12B, which are inserted or will be inserted into the receiving groove 10 on the underside 11B of the sliding door 1.

[0067] At the trailing end face 11R, the metal profile 12A is extracted from the receiving groove 10. The metal profile 12A, which is preferably made from a single piece of metal, comprises, in this preferred embodiment, two plate-shaped side pieces 122 and a plate-shaped end piece 121, which define a profile cross-section that preferably corresponds to the groove cross-section of the receiving groove 10. In a receiving area 10A at the first end of the receiving groove 10, the groove is widened according to the material thickness of the metal profile 12B, so that it can be countersunk into the receiving groove 10 to such an extent that the groove cross-section and the profile cross-section are flush with each other. At the second end of the receiving groove 10, a second metal profile 12B is inserted in the same manner, but rotated by 180°.

[0068] The retraction device 2 comprises a mounting device 29, which has outwardly angled flange elements or mounting elements 291A, 291B that can be screwed to the end faces of the door compartment walls 3A, 3B. The retraction device 2 can therefore be advantageously mounted at the entrance of the door compartment 3 and, for example, connected to the floor or the door compartment walls. A mounting body 20 is held by the mounting device 29. This mounting body is placed on a mounting plate or rail plate 28 and holds a retraction magnet 10 within the receiving groove 10 (see figure). Fig. 7 ), which can interact magnetically with the metal profiles 12A, 12B.

[0069] Fig. 2b The sliding door device shows 100 of Fig. 1c The diagram shows a sectional view of the door compartment 3 and the sliding door 1, with the metal profile 12B removed from the receiving groove 10. An intermediate profile 12X is also shown, which can be inserted at any point in the receiving groove 10 to define a holding position for the sliding door 1 along its travel path. The second metal profile 12B features a stop plate 123, which is angled at 90° relative to the end piece 121 and projects into the profile cross-section and, after insertion into the receiving groove 10, also into the groove cross-section, forming an end stop for the sliding door 1. The first metal profile 12A is preferably identical in design but rotated 180° in a horizontal plane.

[0070] Fig. 3a Figure 2 shows the retraction device 2 in a preferred embodiment with the detached mounting device 29 and a part of the sliding door 1 shortly before reaching its end position. Fig. 1a , in which the schematically shown retraction magnet 21 interacts with the second metal profile 12B and pulls the sliding door 1 against the mounting body 20 of the retraction device 2.

[0071] In this preferred embodiment, a damping device 22 is optionally provided, which is mounted on the mounting body 20 and which interacts with the stop plate 123 of the metal profile 12B to dampen the movement of the sliding door 1 into the end position.

[0072] If a first and a second metal profile 12A, 12B are provided at the opposite ends of the track of the sliding door 1, the damping device 22, as shown in Fig. 4a The damper parts 22A, 22B are shown, preferably two damper parts 22A, 22B, which are oriented in opposite directions against the associated metal profile 12A or 12B. The damper parts 22A, 22B comprise damping pistons 220A, 220B, which are slidably held in bearing sleeves 202A, 202B of the mounting body 20, and which have stop collars 221A, 221B at their opposing ends, which are mounted within a bearing channel 202 and are slidable against the bearing sleeves 202A, 202B (see Figure 1). Fig. 4b ). At their opposite ends, the damper parts 22A, 22B have elastic stop elements 223, which are made of rubber, for example, and which prevent disturbing noises when the damper parts 22A, 22B hit the stop plate 123.

[0073] In Fig. 4a The double arrow illustrates that the two damping pistons 220A, 220B preferably act on only one spring element 225 and / or on only one damping element. The damping device 22 is therefore of a simple design and can be implemented with minimal effort. Damping can be achieved, for example, by displacing air that is enclosed in the damping pistons 220A, 220B and the connecting tube 222 held between them, and which can escape, for example, through a small opening.

[0074] Fig. 3a The figure further shows that the mounting body 20 is equipped with guide rollers, optionally held elastically, or with elastic wings 231, which protrude from the mounting body 20 and face the side walls 10S of the receiving groove 10. The retraction device 2 thus also serves as a guide device, which allows the facing end, here the underside 11B of the sliding door 1, to be guided stably.

[0075] In the lower part of the mounting body 20, an ejection device 24 is provided, which has a push rod 241 that is aligned parallel to the device axis y and has been moved outwards.

[0076] Furthermore, the assembly device 29 is shown, which is frame-shaped and has the device walls 29S and a device base 29B in which a mounting opening 290 is provided. Adjoining the mounting opening 290, a tongue-shaped part is bent upwards, forming an auxiliary stop 292 for the push rod 241 of the ejection device 24. A rail plate 28 can be inserted into the mounting opening 290. The rail plate 28 has two L-shaped guide rails 281 on its upper surface, which are aligned with each other. The guide rails 281 can engage in guide grooves 208, which are provided on both sides of the mounting body 20, but which do not extend continuously through the mounting body 20. The rail plate 28, with the guide rails 281, can be inserted into the guide grooves 208 from the side facing the mounting body and moved to the end of the guide grooves 208.In a first step, the rail plate 28 is connected to the mounting body 20, and in a second step, it is anchored in the stationary mounting fixture 29. Subsequently, the mounting body 20 can be moved relative to the rail plate 28 but can no longer be detached from the mounting fixture 29. In one direction, the movement of the mounting body 20 is limited at a point where the ends of the guide grooves 208 contact the guide rails 281. In the other direction, the movement of the mounting body 20 is limited by the auxiliary stop 292, which interacts with the ejection device 24.

[0077] Fig. 3b shows the infeed device 2 in the configuration of Fig. 3a with the detached mounting device 29 and a part of the sliding door 1 in the end position of Fig. 1c , in which the non-visible retraction magnet 21 interacts with and is retracted into the first metal profile 12A. The damping piston 220A of the first damper part 22A (not visible) is moved to its maximum rightward position, so that its stop collar 221A rests against the stop collar 221B of the second damper part 22B. In addition to the retraction magnet 21, guide devices 23 are anchored in the magnet channel 201, which have guide rollers 231 on both sides facing the side walls 10S of the receiving groove 10. The mounting device 29, into which the rail plate 28 is inserted, is also shown. The mounting device 29 preferably has locking elements or fastening elements to hold the rail plate 28.

[0078] Fig. 4a shows the preferably designed infeed device 2 Fig. 3a without metal profiles 12A, 12B in exploded view. The feed device 2 comprises a mounting body 20, which has a magnetic channel 201 closed at one end and an ejection channel 204, which run parallel to the device axis y and, during operation of the feed device 2, parallel to the displacement axis x. The magnetic channel 201 is provided with window openings 203 at both ends. On its upper side, the mounting body 20 has a bearing channel 202, which is open upwards, and bearing sleeves 202A, 202B adjoining it on both sides, which in this preferred embodiment are open outwards.

[0079] Furthermore, two insertion magnets 21 are shown, which are composed of one piece or of several magnet segments. The insertion magnets 21 are preferably polarized perpendicular to the displacement axis x and to the device axis y and preferably also perpendicular to the side walls 10S of the receiving groove 10 (see Fig. 2b ). An advantageous embodiment of the insertion magnet 21 can also be achieved by changing the polarity between individual magnets or groups of individual magnets by 90° or 180°.

[0080] Also shown are two guide devices 23, which have a bearing body 230 made of metal or plastic in which a bearing roller 231 is rotatably mounted on each side. In further preferred embodiments, the guide elements 231 are designed as elastic wings, which are preferably integrally formed on the bearing body 230 and which can preferably be completely recessed into the bearing body 230, so that the guide device 23 can be inserted into the magnetic channel 201 particularly easily.

[0081] The guide devices 23 together with one of the insertion magnets 21 can be inserted into the magnetic channel 201 in the sequence shown, such that the guide rollers 231 held by the guide devices 23 can emerge from the mounting body 20 through the window openings 203.

[0082] Furthermore, a double-sided damping device 22 with two damping parts 22A, 22B, oriented in opposite directions, is shown. The damping parts 22A, 22B each comprise a damping piston 220A, 220B, which has a stop collar 221A, 221B on the sides facing each other and an elastic stop element 223 on the sides facing away from each other. The two damping pistons 220A, 220B are tubular in shape and connected to each other by a connecting tube 222 (shown in dashed lines) and are thus telescopically displaceable relative to each other.

[0083] The damping pistons 220A, 220B are inserted from above into the bearing sleeves 202A, 202B, so that the stop collars 221A, 221B can be moved within the bearing channel 202 until they touch each other or one of the bearing sleeves 202A, 202B.

[0084] The damping device 22 is shown after activation of the first damper part 22A, whose damper piston 220A extends from the door compartment 3 after the sliding door 1 has been extended (see Fig. 1c ) and upon impact with the first metal profile 12A (schematically represented by an arrow), the second damper part 22B is displaced maximally to the left, so that the connecting tube 222 is completely covered and the stop collars 221A, 221B abut each other against the second bearing sleeve 202B, which exerts a counterforce on the stop collars 221A, 221B. Conversely, if a force is exerted on the second damping piston 220B, it is displaced against the first damping piston 220A until both stop collars 221A, 221B abut the first bearing sleeve 202A.

[0085] Furthermore, an ejection device 24 is shown, which can be inserted into the ejection channel 204 and which comprises an ejection cylinder 240 in which a preferably cylindrical push rod 241 is slidably mounted and which has an annular flange 249 on its front side. The annular flange 249 prevents the ejection device 24 from being pushed through the ejection channel 204 when a force is applied to the push rod 241. Displacement of the ejection device 24 in the other direction is prevented by the auxiliary stop 292 of the mounting device 29, against which the push rod 241 rests (see Fig. 6a und Fig. 6b ).

[0086] Fig. 4b shows the feed device 2 of Fig. 4a From the other side, after inserting one of the insertion magnets 21 and the two guide devices 23 into the magnet channel 201, which on this side is only open to the outside through the window openings 203. The guide rollers 231 project outwards beyond the mounting body 20 perpendicular to the device axis y.

[0087] Due to the lack of external force, the two damping pistons 22A, 22B are moved outwards to a maximum position by one or more return springs 225, in which the stop collars 221A, 221B bear against the associated bearing sleeve 202A, 202B of the mounting body 20 after the damping device 22 has been inserted.

[0088] The ejection device 24 was completely removed from the ejection channel 204. The cylindrical push rod 241 is inserted to its maximum extent into the ejection cylinder 240. A double arrow symbolizes that the push rod 241 can be locked and unlocked by applying force. A push spring 245 and a cyclically operating locking device 246 are shown schematically. As soon as the connecting device 246 is released by applying force, the push rod 241 is pushed outwards by the push spring 245. The push spring 245 is dimensioned such that the mounting body 20 can be moved into the position shown and the sliding door 1 can be moved from the parked position to the end position. As soon as the mounting body 20 is pushed forward again, the push rod 241 is retracted and locked, and the ejection spring 245 is tensioned.

[0089] The mounting body 20 is inserted into the rail plate 28, whose guide rails 281 are inserted into the guide grooves 208 of the mounting body 20. The mounting body 20 is shifted rearward relative to the rail plate 28 to a position in which the guide rails 281 abut the ends of the guide grooves 208. Any forward displacement after the extension of the push rod 241 acts against the end stop 292 (see figure). Fig. 6a und Fig. 6b ) the ejection device 24, however, is opposed. The mounting body 20 is therefore displaceable along the mounting device 29 between these two end positions.

[0090] The Figuren 5a und 5b Figure 22 illustrates the extreme positions of the damper parts 22A, 22B of the damping device 22 after the sliding door 1 has moved into different end positions.

[0091] Fig. 5a shows the retraction device 2 without the sliding door 1 of Fig. 1b in the park position, in which the second damper part 22b of the damping device 22 was actuated by means of the second metal profile 12B and the stop collars 221A, 221B are held against each other by the first bearing sleeve 202A.

[0092] Fig. 5b shows the retraction device 2 without the sliding door 1 of Fig. 1b in the end position in which the sliding door 1 is fully extended and the first damper part 22B of the damping device 22 has been actuated and the stop collars 221A, 221B are held against each other by the second bearing sleeve 202B.

[0093] Fig. 6a The sliding door device shows 100 of Fig. 1a The diagram shows the door compartment 3 and the sliding door 1 in sectional view. The sliding door 1 was pulled into an end position by means of the retraction device 2, in which the second metal profile 12B rests against the second damper part 22B of the damping device 22. In this position, the sliding door 1 can be manually grasped and fully extended. If, however, the door opening is to be fully opened, the sliding door 1 is moved further against the door compartment 3 into the parked position by manual force.

[0094] Fig. 6b The sliding door device shows 100 of Fig. 1b The diagram shows the door compartment 3, the sliding door 1, and the mounting body 20 in sectional view. Applying force to the sliding door 1 pushed the mounting body 20 forward. During this process, the push rod 241, which rests against the end stop 292, was retracted and locked. The sliding door 1 thus remains in the parked position, in which the front face 11F of the sliding door 1 is at the same height as the end faces of the door compartment walls 3A and 3B. The sliding door 1 is no longer visible and can no longer be manually accessed. Only by applying further force to the sliding door 1 is it moved forward together with the mounting body 20, thereby releasing the lock of the push rod 241 and pushing the mounting body 20 and the sliding door 1 back into their end position by the ejection spring 245.

[0095] The rear half of the mounting body 20 is cut away, so that the feed magnet 21, the front guide device 23 and the ejection device 24 are exposed.

[0096] Fig. 7 shows the mounting body 20 of the feed device 2 of Fig. 3a with the assembly channel 201, in which the feed magnet 21 is held between two guide devices 23, and with the ejection channel 204, into which the ejection device 24 is inserted.

[0097] The bearing bodies 230 of the guide device 23 have detent elements 232 which are held in detent recesses 210 within the magnetic channel 201. The feed magnet 21 is therefore held securely between the two guide devices 23. Reference symbol list:

[0098] 1 Sliding door 100 Sliding door device 10 Receptacle 10A, 10B Receptacle areas 10S Vertical side walls of the receptacle 10 10T Head surface of the receptacle 10 11B Bottom of the sliding door 1 11F Leading end face of the sliding door 1 11R Trailing end face of the sliding door 1 11T Top of the sliding door 12A, 12B Ferromagnetic metal profiles 12X Metal profile arranged between the ends of the receptacle 10 121 Head of the metal profile 12A, 12B 122 Side pieces of the metal profile 12A, 12B 123 Stop plate of the metal profile 12A, 12B 19 Handle 190 Operating element 2 Retraction device 20 Mounting body 201 Magnetic channel 2010 Detent recess 202 Storage channel 202A, 202B Bearing sleeves 203 Window openings 204 Ejection channel 208 Guide grooves 21 Feed magnet 22 Damping device 22A, 22B Damper parts 220A, 220B Damping piston 221A, 221B Stop collar 222 Connecting tube 223 Elastic stop element 225 Return spring 23 Guide device, Guide device 230 Bearing body 231 Guide element,Sliding element or bearing roller 232 Detent element 24 Ejection device 240 Ejection cylinder 241 Push rod 245 Ejection spring 246 Locking device 249 Ring flange 28 Rail plate 281 Guide rails 29 Mounting device 29B Fixture base 29S Fixture walls 290 Mounting recess 291A, 291B Mounting elements 292 Auxiliary stop 3 Door compartment 3A, 3B Door compartment walls 30 Parking space 4 Door frame 40 Door opening 9 Guide device 91 Running rail 92 Running gear x Displacement axis y Fixture axis

Claims

1. Retraction device (2) for a sliding door device (100), comprising a mounting body (20) that can be connected to a stationary mounting body (3), at least one permanent magnetic retraction magnet (21) that is held by the mounting body (20), at least one metal profile (12A, 12B) made of ferromagnetic material that can be connected to the sliding door (1) and that can interact with the retraction magnet (21) when the sliding door (1) is moved, characterized by that a sliding door (1) is provided which is displaceable along a displacement axis (x) which has a leading end face (11F) and a trailing end face (11R) as well as a receiving groove (10) which extends from a first end to a second end parallel to the displacement axis (x) and which has a first and second side wall (10S) which are opposite each other, thatthe mounting body (20) with which at least one insertion magnet (21) projects into the receiving groove (10), and that that at least one metal profile (12A, 12B) is arranged and fastened within the receiving groove (10).

2. Infeed device (2) according to claim 1, characterized by a) that that has at least one metal profile (12A, 12B) comprising at least one metal plate or two metal plates arranged parallel or perpendicular to each other; or b) that that at least one metal profile (12A, 12B) is U-shaped and has two side pieces (122) connected to each other by a head piece (121), which define a profile cross-section which corresponds at least approximately to the groove cross-section of the receiving groove (10); or c) thatthat at least one metal profile (12A, 12B) is U-shaped and has two side pieces (122) connected to each other by a head piece (121), which define a profile cross-section which corresponds at least approximately to the groove cross-section of the receiving groove (10), and that a stop plate (123) is attached to the head piece (121), which at least partially closes the profile cross-section.

3. Infeed device (2) according to claim 1 or 2, characterized by a) that that at least one metal profile (12A, 12B) is arranged at the first end of the receiving groove (10) and is designed such that the groove cross-section of the receiving groove (10) is not reduced or not significantly reduced, or b) that the first metal profile (12A) at the first end of the receiving groove (10) is arranged and designed in such a way that the groove cross-section of the receiving groove (10) is not reduced or not significantly reduced, and thatthe second metal profile (12B) is arranged and designed at the second end of the receiving groove (10) such that the groove cross-section of the receiving groove (10) is not reduced or not significantly reduced.

4. Infeed device (2) according to claim 1, 2 or 3, characterized by the mounting body (20) directly or indirectly holds at least one first guide element (231) facing the first side wall (10S) of the receiving groove (10) and at least one second guide element (231) facing the second side wall (10S) of the receiving groove (10).

5. Infeed device (2) according to one of claims 1 - 4, characterized by a) that the mounting body (20) has a magnetic channel (201) extending parallel to the device axis (y) in which the at least one insertion magnet (21) is held, or b) thatthe mounting body (20) has a magnetic channel (201) extending parallel to the device axis (y) in which the at least one insertion magnet (21) and at least one guide device (23) are held, the guide device having bearing rollers or elastic wings (231) which face the side walls (10S) of the receiving groove (10), or c) that the mounting body (20) has a magnetic channel (201) running parallel to the device axis (y) in which the at least one insertion magnet (21) is held between two guide devices (23) which have bearing rollers or elastic wings (231) which face the side walls (10S) of the receiving groove (10).

6. Infeed device (2) according to one of claims 1 - 5, characterized by a) that at least one feed magnet (21) is polarized perpendicular to the device axis (y) or perpendicular to the side walls (10S) of the receiving groove (10); or b) thatSeveral insertion magnets (21) are provided which are polarized perpendicular to the device axis (y) or perpendicular to the side walls (10S) of the receiving groove (10) and whose polarity is identical or preferably changes from insertion magnet (21) to insertion magnet (21).

7. Infeed device (2) according to one of claims 1 - 6, characterized by a) that the receiving groove (10) at the first or second end is either completely or partially closed off by a closing element of the sliding door (1) or a stop plate (123) of the metal profile (12A, 12B) inserted there, and that the mounting body (20) holds a damping device (22) which has a damping part (22A; 22B) facing the first end of the receiving groove (10); or b) that the receiving groove (10) at the first end is either completely or partially closed off by a closing element of the sliding door (1) or a stop plate (123) of the first metal profile (12A, 12B), that the receiving groove (10) at the second end is closed either by a closing element of the sliding door (1) or by a stop plate (123) of the second metal profile (12A, 12B), and that the mounting body (20) holds a damping device (22) comprising a first damping part (22A) facing the first end of the receiving groove (10) and a second damping part (22B) facing the second end of the receiving groove (10).

8. Infeed device (2) according to claim 7, characterized by that the first damper part (22A) and the second damper part (22B) have tubular damping pistons (220A, 220B) which are connected to each other by a connecting tube (222) and are telescopically slidable into one another, and which each have a stop collar (221A, 221B) at their respective ends facing each other, and thatthe mounting body (20) has a bearing channel (202) which is open to the outside, in which the stop collars (221A, 221B) are slidably mounted, and to which bearing sleeves (202A, 202B) connect on both sides, which limit the travel of the stop collars (221A, 221B), and in which the damping pistons (220A, 220B) are slidably mounted.

9. Infeed device (2) according to one of claims 1 - 8, characterized by the fact that an additional metal profile (12X), which has no stop plate, is arranged between the ends of the receiving groove (10) such that a holding position of the sliding door (1) is defined.

10. Infeed device (2) according to one of claims 1 - 9, characterized by that a mounting device (29) is provided which serves to mount the mounting body (20) and which has an auxiliary stop (292), thatthe mounting body (20) holds on the outside or in an ejection channel (204) an ejection device (24) which comprises an ejection cylinder (240), a push rod (241) slidably mounted in the ejection cylinder (240) and extendable from the ejection cylinder (240), an ejection spring acting on the push rod (241) and a locking device which is connected to the push rod (241) and which can be cyclically locked and unlocked by force acting on the push rod (241) after the push rod (241) has been retracted. that the push rod (241) can be extended from the ejection cylinder (240) parallel to the device axis (x) against the auxiliary stop (292) and can be retracted back into the ejection cylinder (240) by applying force, thatThe mounting body (29) on the mounting device (29) can be displaced parallel to the device axis (x) such that the push rod (241) resting against the auxiliary stop (292) can be inserted into the ejection cylinder (240) and the locking device can be actuated in order to lock the push rod (241) by a first force and to release it again by a second force.

11. Infeed device (2) according to one of claims 1 - 10, characterized by the fact that the mounting device (29) holds a rail plate (28) in a fixed or detachable manner, the rail plate having guide rails (281) that engage in guide grooves (208) provided in the mounting body (20).

12. Infeed device (2) according to one of claims 1 - 11, characterized by the fact that the retraction device is provided as an installation kit without a sliding door (1).

13. Sliding door device (100) with at least one retraction device (2) according to one of claims 1 - 12, which is arranged on the top or bottom of a sliding door (1).

14. Sliding door device (100) according to claim 13, characterized by the fact that the sliding door (1) is held slidably by a guide device (9) along a displacement axis (x) and that a parking space is provided into which the sliding door (1) can be slid, or that a door compartment (3) is provided into which the sliding door (1) can be slid.

15. Sliding door device (100) according to claim 13 or 14, characterized by the fact that the receiving groove (10) is provided on the underside of the sliding door (1), and that the mounting device (29) is mounted on the floor below the sliding door (1), or that the mounting device (29) is connected below the sliding door (1) to at least one wall (3A, 3B) or the end face of a wall (3A, 3B) of the door compartment (3).

Images