EP1681425A2 - Sliding door mounted on rollers with a magnetic drive system - Google Patents

Abstract

The sliding door with a magnetic drive system for at least one door wing (5) has a magnetic row (1), the magnetisation of which in their longitudinal direction in defined time intervals changes the polarity sign. The door wing can be fastened on a support slide (4) to which is connected a roller arrangement which fulfils a support function in a support direction (z). The roller arrangement through a longitudinal profile of at least one of its individual rollers in interaction with at least one running track on a support profile (6) prevents a drift of the roller arrangement in a transverse direction (y) which extends perpendicularly to the drive direction (x) and to the support direction (z).

Description

The invention relates to a roller-mounted sliding door with a magnetic support and drive system for at least one door leaf, with a linear drive unit with at least one row of magnets. The term magnet series also includes elongated individual magnets. The magnet series can be arranged stationary or mobile.

From DE 40 16 948 A1 discloses a sliding door guide is known in the cooperating magnets under normal load a non-contact floating guide a held in a sliding guide door or the like cause, in addition to the stationary magnet arranged the sliding guide a stator of a linear motor is arranged Runner is arranged on the sliding door. The selected V-shaped arrangement of the permanent magnets of the disclosed permanently excited magnetic support means no laterally stable guideway can be realized, which is why a relatively complicated arrangement and design of the stator and rotor is required.

From WO 00/50719 A1 a combined storage and drive system for an automatically operated door is known, in which a permanently energized magnetic support system is symmetrical and has stationary and movable magnet rows, which are each arranged in a plane, wherein the support system is in a labile equilibrium, and in which the support system has symmetrically arranged lateral guide elements, which can be stored in a roll shape. Due to the thus achieved laterally stable track results in a simple design and arrangement of the stator and rotor of a housed in a common housing linear motor, namely, the ability to arbitrarily arrange the stator and rotor of the linear motor with respect to the support system and not be limited by the support system with respect to the shape of the stator and rotor.

What these two storage systems have in common is that they work according to the principle of the repulsive force effect, which principle of action enables a stable state of suspension without expensive electrical control. The disadvantage of this, however, is that both at least one stationary and at least one positionable magnet array must be present, ie, be arranged over the entire path of the sliding guide or the bearing of the automatically operated door and on the movable along this guide support carriage for the door magnets which makes such a system, which is characterized by the absence of mechanical friction to carry the door by extreme ease and noiseless operation and is almost wear and maintenance-free, is very expensive to manufacture.

From DE 196 18 518 C1 an electromagnetic drive system for magnetic levitation and support systems is further known in which a stable suspension and support state is achieved by a suitable arrangement of permanent magnet and ferromagnetic material. For this purpose, the permanent magnet puts the ferromagnetic material in the state of a magnetic partial saturation. Electromagnets are arranged so that the permanent magnets are moved solely by a change in the saturation in the support rail, and the coil cores are included in the permanent magnetic partial saturation, which leads to the floating and wearing state.

Furthermore, WO 94/13055 shows a stator drive for an electric linear drive and a door provided with such a stand, which is suspended by means of magnets in the lintel of a frame. For this purpose, a plurality of magnets or magnet groups are arranged on the door panel, the magnetic field strength is so large that an attraction force is achieved to a guide plate, which is arranged on the underside of the lintel, wherein the attraction is sufficient to lift the weight of the door.

The two systems described in these documents have in common that a caking of the magnets is prevented on the ferromagnetic material by means of rollers, so an air gap between the magnet and the ferromagnetic material is adjusted by means of rollers. These roles must accommodate large forces in the selected arrangements, since the magnetic field strength can not be chosen so that only the respective magnetically suspended door is held, but due to safety regulations, a certain additional load capacity must be present so that the door does not fall unintentionally. Consequently, the roles must be interpreted in a similar way as in purely roller-mounted sliding doors, which results in a mechanical friction for adjusting the air gap is present. This eliminates the extreme ease and noiseless operation of working on the repulsive force principle storage and leads to wear and maintenance. In addition, the magnetic attraction must be precisely adjusted to the particular load to be carried during manufacture, making these systems unsuitable for practical use or too expensive.

Next, although these publications lead to the use of a coupled with a magnetic support device or integrated linear drive However, the configuration of such a linear drive is not described.

It is therefore the object of the invention to develop a sliding door with a magnetic support and drive system for at least one door leaf, which has a linear drive unit with at least one magnet row, so that the aforementioned advantages remain at low production costs.

This object is achieved with the features specified in claim 1. Advantageous embodiments of the subject of claim 1 are given in the dependent claims.

The sliding door according to the invention comprises a magnetic support and drive system for at least one door leaf, with a magnet array arranged in the drive direction, the magnetization of which changes sign in its longitudinal direction at certain intervals, a coil arrangement consisting of a plurality of individual coils and coil cores, which with appropriate control of the individual coils Interaction with the magnetic series causes the feed forces, a support carriage which is movably suspended on a support profile and on which the door can be attached, and connected to the support carriage roller assembly which fulfills a supporting function in a supporting direction with respect to the door leaf, wherein the Roll arrangement by a longitudinal profile of at least one of the individual rollers in interaction with at least one provided on the support profile tread prevents migration of the roller assembly in a transverse direction, the perpendicular extends to the drive direction and the supporting direction.

• größere Lebensdauer der Rollen,
• Reduzierung der Rollengröße und damit eine Bauraumreduktion bezüg lich der Rollenlagerung,
• und eine Reduzierung der Rollengeräusche,
• Reduzierung des Rollwiderstandes bzw. der Rollreibung.

By such a design of the magnetic drive system as a magnetic support and drive system, in which the required carrying capacity is partially absorbed by the magnetic support and drive system and partially by the roller assembly, the advantage over the prior art that the roller assembly neither the has to carry the entire load of the door leaf, nor must take a required due to safety regulations high load capacity in purely by means of magnets suspended door leaves. As a result, the following advantages are achieved compared to a pure roller bearing or a magnetic suspension supported by rollers:

• longer life of the rollers,
• Reduction of the roll size and thus a reduction in space bezüg Lich the roller bearing,
• and a reduction in roll noise,
• Reduction of rolling resistance or rolling friction.

Next arise in this embodiment of the sliding door according to the invention over one with a purely magnetic support and guide system the advantages that the load-bearing capacity stiffness in the design of the system need not be taken into account, during acceleration and deceleration no rolling movements of the carried load, such as the door leaf , and that different deflections at different door weights do not necessarily have to be considered or compensated. Further, the inventive designed magnetic support and drive system for at least one door without taking into account the actual later use without differences in series can be made, ie without an adjustment required during manufacture to the weight to be supported later.

Next results from the inventive design of the longitudinal profile of at least one of the rollers that on the support carriage no further horizontal guide element needs to be provided, which holds the support carriage in a stable position in the transverse direction. The longitudinal profile of a roller here is the embodiment of its tread in the unwinding of the roller, so the design of their tread in the cross section of the roller, which is formed by a section of the roller perpendicular to the direction. The replacement of the otherwise necessary horizontal guide member by a particular embodiment of the longitudinal profile of at least one roller running on a matched tread on the support profile, causes a material saving and due to the inherent smooth running of the rollers reduced in friction or taking place without additional friction horizontal guidance ,

For these reasons, a very good smoothness and noiseless operation is given according to the invention in such working on the attractive force principle storage.

According to the invention, the magnet array on the support carriage and the coil assembly on the support profile which can be attached to a wall to which the sliding door according to the invention is to be attached, be attached, whereby the coil assembly form a stator and the magnet array a rotor, or it can then the rotor forming coil assembly on the support carriage and then forming the stator magnet series to be attached to the support profile.

In the case of the sliding door according to the invention, the roller arrangement is preferably in the transverse direction, ie generally in the direction perpendicular to the plane of the door leaf, arranged on both sides of the magnet row. By such a symmetrical structure, a particularly simple and inexpensive embodiment of the invention is realized, by means of which a mounting of the sliding door according to the invention in front, behind or in a lintel can be done without other the door leaf supporting or supporting elements are necessary.

As an alternative to or additionally in this preferred embodiment of the sliding door according to the invention, the roll arrangement is preferably further prevented in the transverse direction by at least one roller arranged on each side of the magnet row, the longitudinal profile of which is conical, the at least two rollers having a conical longitudinal profile, of which at least one is arranged on each side of the magnet array, are aligned opposite to each other. Here, the two rollers are preferably directly opposite each other and outwardly, ie, pointing away from the lying between them magnetic series, arranged in a tapered manner. Of course, an arrangement is possible in which the present invention profiled rollers are not arranged directly opposite one another, for example, if on one side two identically aligned conical rollers and on the other side therebetween an oppositely oriented conical roller are provided. Also, the tapered rollers may be tapered inwardly, that is, facing the row of magnets between them, or two conical rollers may be disposed on one side of the row of magnets, one tapering outwardly and the other tapering inwardly. All these possibilities can also be combined. In this case, the rollers profiled in accordance with the invention in each case preferably run on a crowned, ie convex, running surface.

In the case of the sliding door according to the invention, as an alternative or in addition, preferably the roller arrangement has at least one roller which has a groove-shaped longitudinal profile. In this case, the rollers profiled in accordance with the invention in each case preferably run on a correspondingly inversely configured running surface, which therefore has projections engaging in the grooves.

In the case of the sliding door according to the invention, as an alternative or in addition, preferably the roller arrangement has at least one roller which has a concave longitudinal profile. In this case, the rollers profiled according to the invention in each case preferably run on a convex, ie. convex, tread. The radii of the tread and the longitudinal profile of the roll need not be equal. With a radius of the tread greater than that of the longitudinal profile of the roller, the roller contacts the tread at two points on the outer edges of the profile of the roller and at a radius of the tread less than that of the longitudinal profile of the roller. The roller touches the tread at a point in the middle of the profile of the roller.

In the case of the sliding door according to the invention, as an alternative or in addition, preferably the roller arrangement has at least one roller which has a convex longitudinal profile. In this case, the rollers profiled in accordance with the invention in each case preferably run on an inwardly curved, ie concave, running surface. The radii of the tread and the longitudinal profile of the roll need not be equal. At a radius of the tread smaller than that of the longitudinal profile of the pulley, the pulley touches the tread at two points on the outer edges of the tread and at a radius of the tread larger than that of the longitudinal profile of the pulley touches Roll the tread at a point in the middle of the tread.

In the case of the sliding door according to the invention, as an alternative or in addition, preferably the roller arrangement has single rollers acting in the direction of support and individual rollers acting against the direction of support. By means of such a roller assembly can be done easily mounting a variety of door leaves, which is given in spite of a uniform for all door support and drive system optimal adjustment to individual door settings.

In the case of the sliding door according to the invention, as an alternative or in addition, preferably the carrying carriage is configured so as to be rigid. By such an embodiment of the support carriage, the horizontal positioning according to the invention is particularly facilitated in cases where this is achieved by provided on both sides of the magnet row according to the invention profiled rollers, as in a rigid or provided with a relatively large bending stiffness supporting carriages of the support carriage are negligible.

In the case of the sliding door according to the invention, as an alternative or in addition, preferably the support slide is guided by the roller arrangement in the carrying direction and / or in the transverse direction free of play or virtually free of play, i. with little play, led.

In the case of the sliding door according to the invention, as an alternative or in addition, preferably the at least one running surface provided on the carrying profile is configured or mounted elastically. By means of this preferred embodiment according to the invention, an attenuation and thus a reduction of the drainage noise takes place.

In the sliding door according to the invention further alternatively or additionally preferably at least the running surfaces of the rollers of the roller assembly consist of a low-wear material. This preferred embodiment according to the invention ensures the greatest possible freedom from maintenance of the sliding door according to the invention.

In the case of the sliding door according to the invention, further alternatively or additionally preferably, the roller arrangement has a specific gap-shaped spacing between the magnet row and the coil cores.

Due to such a configuration, in spite of utilizing an unstable state of equilibrium, no electric or electronic control device needs to be provided in this preferred embodiment according to the invention due to the roller arrangement used, which ensures the specific gap-like distance between the magnet array and the coil arrangement. A gap-like distance in the sense of this invention is a distance between two parallel or slightly inclined surfaces. Here, in particular, between a pole face of one of the (at least one) magnet row and one of these face of the coil cores of the coil arrangement arranged opposite to it, essentially parallel thereto.

In the carrying device according to the invention, the magnet row is preferably magnetized parallel to the supporting direction and transversely to the drive direction.

According to the invention, the magnet series preferably consists of one or more high-performance magnets, preferably rare-earth high-performance magnets, more preferably neodymium-iron-boron (NeFeB) or samarium-cobalt (Sm ₂ Co) or plastic-bonded magnet materials. By using such high performance magnets Due to the higher remanence induction, significantly higher force densities can be generated than with ferrite magnets. Consequently, the magnet system can be constructed geometrically small and thus save space for a given load capacity with high-performance magnets. The higher material costs of the high-performance magnets compared to ferrite magnets are at least compensated by the comparatively small magnet volume.

The drive system according to the invention or combined support and drive system is used to drive at least one door leaf of a sliding door, which is preferably designed as a curved sliding door or horizontal sliding wall. In addition to this insert, it can also be used to drive gate leaves or in feed devices, handling devices or transport systems.

Fig. 1

eine Längsschnittdarstellung des erfindungsgemäß prinzipiell verwendeten kombinierten Trag- und Antriebssystems,

Fig. 2

eine elektrische Verschaltung der Spulen der Linear-Antriebseinheit des in Fig. 1 gezeigten kombinierten Trag-und Antriebssystems,

Fig. 3

ein Diagramm zur Erläuterung einer ersten Möglichkeit des Spannungsverlaufs an den wie in Fig. 2 gezeigt verschalteten Spulen des erfindungsgemäß verwendeten Antriebssystems,

Fig. 4

ein Diagramm zur Erläuterung einer zweiten Möglichkeit des Spannungsverlaufs an den wie in Fig. 2 gezeigt verschalteten Spulen des erfindungsgemäß verwendeten Antriebssystems,

Fig. 5

ein Diagramm zur Erläuterung einer dritten Möglichkeit des Spannungsverlaufs an den wie in Fig. 2 gezeigt verschalteten Spulen des erfindungsgemäß verwendeten Antriebssystems,

Fig. 6

eine Querschnittsdarstellung einer Schiebetür nach einer ersten bevorzugten Ausführungsform nach der Erfindung,

Fig. 7

eine Längsschnittsdarstellung einer Schiebetür nach der ersten bevorzugten Ausführungsformen nach der Erfindung

Fig. 8

eine Querschnittsdarstellung einer Schiebetür nach einer zweiten bevorzugten Ausführungsform nach der Erfindung,

Fig. 9

eine Querschnittsdarstellung einer Schiebetür nach einer dritten bevorzugten Ausführungsform nach der Erfindung,

Fig. 10

eine Querschnittsdarstellung einer Schiebetür nach einer vierten bevorzugten Ausführungsform nach der Erfindung, und

Fig. 11

eine Querschnittsdarstellung einer Schiebetür nach einer fünften bevorzugten Ausführungsform nach der Erfindung.

The invention will now be described in more detail by means of exemplary embodiments. Showing:

Fig. 1

a longitudinal sectional view of the present invention used in principle combined support and drive system,

Fig. 2

an electrical connection of the coils of the linear drive unit of the combined support and drive system shown in Fig. 1,

Fig. 3

2 is a diagram for explaining a first possibility of the voltage profile at the coils of the drive system used according to the invention, as shown in FIG. 2,

Fig. 4

a diagram for explaining a second possibility of the voltage waveform to the as shown in Figure 2 connected coils of the drive system according to the invention,

Fig. 5

a diagram for explaining a third possibility of the voltage waveform to the as shown in Figure 2 connected coils of the drive system according to the invention,

Fig. 6

a cross-sectional view of a sliding door according to a first preferred embodiment of the invention,

Fig. 7

a longitudinal sectional view of a sliding door according to the first preferred embodiments of the invention

Fig. 8

a cross-sectional view of a sliding door according to a second preferred embodiment of the invention,

Fig. 9

a cross-sectional view of a sliding door according to a third preferred embodiment of the invention,

Fig. 10

a cross-sectional view of a sliding door according to a fourth preferred embodiment of the invention, and

Fig. 11

a cross-sectional view of a sliding door according to a fifth preferred embodiment of the invention.

1 shows a schematic basic representation of two drive segments of a drive system preferably used according to the invention, here as a combined magnetic support and drive system, in a longitudinal section, in which the magnetic linear drive used according to the invention acts on the row of magnets 1, which is fastened to a support carriage 4 , which holds a door 5. The magnet array 1 is attached to a support profile 6 and has in each case alternately polarized individual magnets. In the supporting direction above the magnetic row 1 coils 2 are arranged with a certain gap-shaped distance so that a respective coil core 3 in the supporting direction, i. z-direction, extends. The coil cores are in attractive force with the magnetic series 1 and thus bring a portion of a load capacity for the door 5 on.

In order to ensure a continuous feed of the magnetic row 1, the stator coils 2 are arranged with their respective coil cores 3 in different relative positions to the grid of the permanent magnets. The more different relative positions are formed, the more uniform the thrust force can be realized over the travel. On the other hand, since each relative position is attributable to an electrical phase of a drive system required for the linear drive, as few electrical phases as possible should be used. Due to the available three-phase three-phase network, a three-phase system, as shown by way of example in FIG. 2, is very easy to set up.

In this case, a respective drive segment and thus a coil module of the linear drive unit consists of three coils which have an extension of three length units in the drive direction, ie x-direction, ie between the centers of adjacent coil cores 3 is a grid R _S = 1 unit length. The length of a magnet of the magnet series 1 in the drive direction and the length of the gap lying between the individual magnets of the magnetic series 1 is chosen here so that the length of a magnet L _magnet + length of a gap L _gap = magnetic grid R _M = 3/4 length unit (= 3/4 R _S ).

FIG. 2 shows the interconnection of the coils of the two drive segments shown in FIG. 1 of the linear drive unit preferably used in accordance with the invention. Here, a first coil 2a is connected to a first coil core 3a between a first phase and a second phase of a three-phase three-phase system whose three phases are uniformly distributed, ie the second phase at 120 ° and a third phase at 240 °, when the first phase is at 0 °. In the positive drive direction, i. + x-direction, next to the first coil 2a with a bobbin 3a lying second coil 2b with bobbin 3b of a drive segment of the linear drive unit is connected between the second phase and the third phase and in the positive drive direction, i. + x-direction next to the second coil 2b with coil core 3b lying third coil 2c with bobbin 3c is connected between the third phase and the first phase. In addition to such a drive segment of the linear drive unit lying drive segments of the linear drive unit are connected in the same way to the three phases of the three-phase system.

If one assigns the angle formed by the permanent magnets Polraster, analogous to the arrangement in a two-pole DC motor, phase angle, so the linear coil arrangements can be mapped in a circular phase diagram. Since this can be interpreted both magnetically as a driving effect on the permanent magnets and electrically as a control of the coils, this diagram can be the context between switching states and driving effect are described uniformly.

Such a circular phase diagram with drawn coils is shown in FIG. Here, on the ordinate, the electric potential is given in V and on the abscissa the magnetic potential. A circle around the origin of this coordinate system, representing a zero potential for both the electric potential and the magnetic potential, represents the phase angles of the voltage applied to the respective coils, giving a 0 ° phase position at the intersection of the circle with the positive ordinate and the phase is clockwise to a 90 ° phase position in the intersection of the circle with the negative abscissa, which represents the magnetic potential of the south pole, a 180 ° phase position in the intersection of the circle with the negative ordinate, the minimum voltage potential represents, a 270 ° phase position in the intersection of the circle with the positive abscissa, which represents the magnetic potential of the north pole, to a 360 ° phase position, which is equal to the 0 ° phase position, in the intersection of the circle with the positive Ordinate representing the maximum voltage potential changes.

As shown in FIG. 2, a relationship is given in which the first coil 2a having the coil core 3a between a 0 ° phase position and a 120 ° phase position, the second coil 2b with the coil core 3b between a 120 ° phase position and a 240 ° ° phase position and the third coil 2c lie with coil core 3c between a 240 ° phase position and a 360 ° phase position. In three-phase operation, now rotate the hands of these coils according to the alternating frequency of the three-phase current in a clockwise direction, each one of the electrical potential difference between the on the Ordinate projected start and end points of the pointer voltage corresponding to the coil is applied.

In the magnetic interpretation of the phase diagram, a phase pass of 180 ° corresponds to a displacement of the rotor by the distance between the centers of two adjacent magnets, ie the magnetic grid R _M. Due to the alternating polarization of the magnets in the rotor, a pole change is carried out when shifting around the magnetic grid R _M. After a 360 ° phase pass, the rotor displacement is two R _M. In this case, the magnets are again in the starting position relative to the grid R _{S of} the stator coils, comparable to a 360 ° rotation of the rotor of a two-pole DC motor.

For the electrical interpretation of the phase diagram, the ordinate is considered, on which the applied electrical voltage potential is shown. At 0 °, the maximum potential, at 180 °, the minimum potential and at 90 ° or 270 °, an average voltage potential. As mentioned above, the coils are represented in the diagram by arrows whose start and end points represent the contacts. The respectively applied coil voltage can be read by projection from start and end point of the arrows to the potential axis. By the direction of the arrow, the current direction and thereby the magnetization direction of the coil is set.

Instead of a continuous sinusoidal voltage source, which has a phase diagram according to FIG. 3, a controller with a rectangular characteristic can also be used for cost reasons. In a corresponding phase diagram, which is shown in Fig. 4, the rectangular characteristic is represented by switching thresholds. Here, the Phase connections in each case assume the three states plus potential, minus potential and potential-free. The positive potential is for example in a range between 300 ° and 60 ° and the negative potential in a range of 120 ° to 240 ° and the ranges between 60 ° and 120 ° and 240 ° and 300 ° represent the potential-free state in which the coils are not connected. In rectangular voltage control, the more uneven thrust compared to sinusoidal control is disadvantageous.

Of course, a large number of further coil configurations and potential distributions can be built up, e.g. The potential distribution shown in Fig. 5, wherein a minimum potential of 0 V in a range between 105 ° and 255 °, a maximum potential of 24 V in a range of 285 ° to 75 ° and potential-free ranges of 75 ° to 105 ° and from 255 ° to 285 °.

FIG. 6 shows a cross-section of a carrying and driving device of a sliding door according to a first preferred embodiment of the invention.

A basically U-shaped support profile 6 has a bottom 9 and two perpendicular thereto side portions 10, each having recesses 11, in which on the support carriage 4 mounted arrangements 7, 8 run by individual rollers, which cause a vertical guide. Here, two identical arrangements 7, 8 are selected from single roles, of which a left arrangement 7 lies in the positive transverse direction y to the left of a right arrangement 8. The left-hand arrangement 7 is fastened on the supporting carriage 4 in the positive transverse direction y on the left and the right-hand arrangement 8 is fastened on the supporting carriage 4 on the right in the positive transverse direction y. The roller assemblies 7, 8 effect by the configuration of their longitudinal profile and a horizontal guide, since the rollers are outwards, ie away from the support carriage 4, tapered conical and run respectively on crowned running surfaces 15. By this configuration, the support carriage 4 "runs between" the running surfaces on which the left roller assembly 7 and the right roller assembly 8 each run, with a breaking to the left or to the right by the load of the door leaf and by (not here, but in the figure 7 shown) against the supporting direction supporting rollers is prevented.

Within the here in principle U-shaped support carriage 4, on whose side regions 12 the arrangements 7, 8 are fastened by individual rollers, the magnet row 1 is arranged on the bottom 13 of the support carriage 4. Between the side regions 12 of the support carriage 4, a coil arrangement consisting of coils 2 and coil cores 3 is arranged with a gap-shaped spacing a to the magnet array 1, which is fastened to the bottom 9 of the support profile 6. Since the support profile 6 may be made of non-magnetic material, e.g. Aluminum, is arranged between the coil assembly 2, 3 and the support section 6, a soft magnetic return rail 14 having holes through which the coil cores 3 are fixed to the bottom 9 of the support section 6. The coil cores 3 and the soft magnetic return rail 18 may also be integrally formed.

For stabilization, it points in principle upwards, i. in the negative supporting direction, ie the -z direction, open U-shaped support carriages 4 at the upper edges of its lateral regions 12 in the transverse direction, i. positive and negative y-direction, protruding ribs, which are interrupted in the area of the individual roles of the arrangements 7, 8 of the roller assembly.

In these embodiments of the invention, the recesses 11 of the support profile 6 in the vertical direction next to the coils 2 and coil cores 3, which is why the support carriage 4 is designed so that not only the attached thereto magnetic series 1 is disposed within its side regions 12, but also parts of the attached to the support section 6 coils 2 and coil cores 3. This results in a particularly flat design.

Further, the recesses 11 are provided with spherical treads 15, which are designed so that a rolling of the individual rollers of the assemblies 7, 8 of the roller assembly is quiet. The treads 15 may for this purpose consist of two or more material components, e.g. from a soft cushioning layer provided on the support profile 6, and a hard running layer on which the single rollers run.

Below the support carriage 4, a scale 16 of a displacement measuring system is mounted on the outside of the bottom 13, which cooperates with a provided in the support section 6 transducer 17 to determine the position of the running in the support section 6 support carriage 4.

Next to the support section 6, a panel 19 is provided, within which a circuit arrangement 18 is included for driving the linear drive unit, which is electrically connected to the transducer 17 of the position measuring system, with the coil 2 of the coil assembly, with a (not shown) power supply and is connected to a (not shown) sensor for initiating the opening and closing of the sliding door according to the invention.

Of course, according to the invention, the magnet row 1 on the housing 6 and the coil 2, coil cores 3 and possibly a soft magnetic Return flow rail 14 existing coil unit to be attached to the support carriage 4.

FIG. 7 shows a longitudinal section of the support and drive device of the sliding door according to the invention shown in FIG.

In a twice the length of the door leaf having support profile 6, a stator is provided which corresponds to the entire length of the support profile 6. The stator cooperates with a magnet row 1 fastened to the support slide 4, on which the door leaf 5 is suspended, and which has approximately half the length of the stator. In this way, an overlap of the stator and the magnetic row 1 is given in each position of serving as a runner support carriage 4.

It is further shown that the left-hand arrangement 7 of the roller arrangement, of the two identically constructed arrangements 7, 8, consists of four individual rollers 7a, 7b, 7c, 7d, two of which are substantially in the front part and two substantially in the rear part of the door leaf 5 are arranged. Of the four individual rollers 7a, 7b, 7c, 7d run the two outer single rollers 7a, 7d, ie in the direction of travel, the front and the rear single role on a lower tread 15, ie the outer single rollers 7a, 7d take the part of the to wear Door leaf 5 and the support carriage 4 needed force that is not absorbed by the magnetic series 1 and the coil cores 2. The two middle single rollers 7b, 7c run against an upper tread 15, ie they support the support carriage 4 (with or without attached door leaf 5) upwards, ie in the negative supporting direction, from, so that the gap-shaped distance a between the magnetic row 1 and the Spool cores 3 is maintained, so that the magnetic series 1 does not caking on the coil cores 3.

Of course, the orientation of the individual coils may also be reversed, i. the outer individual rollers 7a, 7d can be supported upwards and the middle individual rollers 7b, 7c downwards. Further, the upwardly and downwardly supporting single roles may also be arranged alternately. However, the embodiment shown in FIG. 7 is preferred because of its particularly stabilizing properties for sliding doors.

FIG. 8 shows a cross-section of a carrying and driving device of a sliding door according to a second preferred embodiment of the invention.

In contrast to the first preferred embodiment according to the invention shown in Figure 6, the rollers of the roller assembly 7, 8, not provided with a conically outwardly tapered longitudinal profile, but with a concave, ie curved inward to the roller hub, longitudinal profile , Both the rollers of the right-hand arrangement 8 and those of the left-hand arrangement 7 of the roller arrangement have this longitudinal profile. The rollers 7, 8 designed in this way run on cross-sectionally circular, that is to say altogether cylindrical, running surfaces 15, which are formed halfway into corresponding recesses in the support profile 6 and half out of these projecting round rods. The radius of the concave longitudinal profile of the rollers 7, 8 is slightly larger than that of the provided on the support section 6 treads 15. The round rods can be made of an elastic material, such as rubber with a certain hardness, or of an inelastic material, such as a hard plastic, be made. The material of the round bars is selected according to the desired running characteristics, such as according to the smoothness or ease of movement.

FIG. 9 shows a cross-section of a carrying and driving device of a sliding door according to a third preferred embodiment of the invention.

In contrast to the second preferred embodiment according to the invention shown in FIG. 8, those with a concave, i. curved to the roller hub, longitudinal profile provided rollers of the roller assembly 7, 8, not circular in cross-section, so a total cylindrical, running surfaces 15 which are formed from half in corresponding recesses in the support section 6 recessed round rods, but on convex running surfaces 15, the are formed integrally with the support profile 6. Furthermore, only the rollers of the left-hand arrangement 7 run on such convex running surfaces 15 arranged in the carrying direction at the top and bottom, while the rollers of the right-hand arrangement 8 run on flat running surfaces, that is to say they do not permit any guidance in the transverse direction y.

FIG. 10 shows a cross-section of a carrying and driving device of a sliding door according to a fourth preferred embodiment of the invention.

In contrast to the second preferred embodiment according to the invention shown in FIG. 8, the rollers of the roller arrangement 7, 8 provided with a concave, ie inwardly curved roller hub, do not run on running surfaces 15 which are circular in cross-section, that is to say altogether cylindrical , which are formed from half sunken directly into corresponding recesses on the support profile 6 round rods, but on stored in the support profile 6 recessed round rods formed treads 15, ie each a round rod 15a and arranged between the round rod 15a and the support section 6 damping layer 15b exhibit. That way, both the material of the round rods 15a as well as the damping layer 15b are selected according to desired running properties, whereby a more diverse adaptation to the desired running properties can be made, such as the smoothness and the ease by a hard round rod 15a and a soft damping layer 15b are selected ,

Next run only the lower rollers of the roller assembly 7, 8 on such in the supporting direction arranged below treads 15, while the upper rollers of the roller assembly 7, 8 run on flat but also damped by a two-layer structure treads, so no guidance in the transverse direction y allow.

FIG. 11 shows a cross-section of a carrying and driving device of a sliding door according to a fifth preferred embodiment of the invention.

In contrast to the third preferred embodiment according to the invention shown in FIG. 9, the rollers of the roller arrangement 7, 8 provided with a concave, ie inwardly curved roller hub, do not run on convex running surfaces 15 which are formed integrally with the support profile 6 are but on from stored in the support section 6 embedded to the rollers convex shaped bar profiles formed treads 15, which thus each have a convex to the rollers bar profile 15a and arranged between the bar profile 15a and the support section 6 damping layer 15b. In this way, according to the fourth preferred embodiment, both the material of the bar profile 15a and that of the cushioning layer 15b can be selected according to desired running characteristics, thereby providing a more versatile adaptation to the desired running characteristics can be done, such as, for example, the smoothness and ease by a hard bar profile 15a and a soft damping layer 15b are selected.

Next run both the lower and the upper rollers of the left assembly 7 and the right arrangement 8 of the roller assembly on such in the supporting direction above and below and in the transverse direction right and left of the magnetic row 1 arranged treads 15th

LIST OF REFERENCE NUMBERS

1

magnet row

2a, b, c

Kitchen sink

3a, b, c

Plunger

4

support carriage

5

door

6

support section

7; 7a-7d

Roller arrangement, left arrangement

8th

Roller arrangement, right arrangement

9

Floor of the supporting profile

10

Side area of the supporting profile

11

Recesses in the side areas of the supporting profile

12

Side area of the support carriage

13

Bottom of the carriage

14

Return rail

15

treads

15a

Profile of the treads

15b

Damping layer of the treads

16

Scale of a distance measuring system

17

Measuring transducer of the position measuring system

18

circuitry

19

paneling

a

distance

x

driving direction

y

transversely

z

bearing direction

R _M

magnetic grid

L _gap

gap

L _magnet

magnet length

Claims (15)

Sliding door with a magnetic drive system for at least one door leaf (5), with a magnet row (1) arranged in the drive direction (x), the magnetization of which changes sign in its longitudinal direction at certain intervals, one of a plurality of individual coils (2a, 2b, 2c) and Coil cores (3a, 3b, 3c) existing coil arrangement which, with appropriate control of the individual coils (2a, 2b, 2c) causes an interaction with the magnetic series (1), which causes feed forces, a support carriage (4) which is movable on a support profile ( 6) and to which the door leaf (5) can be fastened, and a roller arrangement (7, 8) connected to the support carriage (4), which fulfills a supporting function in a bearing direction (z) with respect to the door leaf (5) the roller arrangement (7, 8) is provided by a longitudinal profile of at least one of its individual rollers (7a, 7b, 7c, 7d) in interaction with at least one tread (15) provided on the support profile (6) ) prevents migration of the roller assembly (7, 8) in a transverse direction (y), which is perpendicular to the drive direction (x) and the supporting direction (z). Sliding door according to Claim 1, characterized in that the roller arrangement (7, 8) is arranged in the transverse direction (y) on both sides of the row of magnets (1). Sliding door according to claim 2, characterized in that the migration of the roller arrangement (7, 8) in the transverse direction (y) is prevented by at least one roller arranged on each side of the row of magnets (1) whose longitudinal profile is conical, the at least two rollers with conical longitudinal profile, of which at least one on each side of the magnetic row (1) is arranged opposite to each other. Sliding door according to one of the preceding claims, characterized in that the roller arrangement (7, 8) has at least one roller which has a groove-shaped longitudinal profile. Sliding door according to one of the preceding claims, characterized in that the roller arrangement (7, 8) has at least one roller which has a concave longitudinal profile. Sliding door according to one of the preceding claims, characterized in that the roller arrangement (7, 8) has at least one roller which has a convex longitudinal profile. Sliding door according to one of the preceding claims, characterized in that the roller arrangement (7, 8) in the support direction (z) acting single rollers (7a, 7d) and against the supporting direction (z) acting single rollers (7b, 7c). Sliding door according to one of the preceding claims, characterized in that the support carriage (4) is designed rigid. Sliding door according to one of the preceding claims, characterized in that the support carriage (4) is guided without play by the roller arrangement (7, 8) in the carrying direction (z) and / or in the transverse direction (y). Sliding door according to one of the preceding claims, characterized in that the at least one provided on the support profile tread (15) is designed or mounted elastically. Sliding door according to one of the preceding claims, characterized in that at least the running surfaces of the rollers of the roller assembly (7, 8) consist of a low-wear material. Sliding door according to one of the preceding claims, characterized in that the roller arrangement (7, 8) ensures a certain gap-shaped spacing (a) between the magnet row (1) and the coil cores (3). Sliding door according to one of the preceding claims, characterized in that the magnet row (1) is magnetized parallel to the carrying direction (z) and transversely to the drive direction (x). Sliding door according to one of the preceding claims, characterized in that the magnetic row (1) consists of one or more high-performance magnets, preferably rare-earth high-performance magnets, more preferably of the NeFeB or Sm ₂ Co type. Sliding door according to one of the preceding claims, characterized in that the sliding door is designed as a curved sliding door or horizontal sliding wall.

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