The invention relates to a driver device for a sliding door, in particular an automatic sliding door.
Sliding doors are very well known. Sliding door leaves are coupled to a traction rope of a rope drive mostly by means of a rigid driver. The rigid driver transfers all movements of a coupled sliding door leaf, almost undamped, onto the traction rope, which may lead to excessive loads of the tensioned traction rope. In case of a drive motor, which is operatively connected to the traction rope, under certain circumstances higher loads with regard to the driving force of the drive motor may be the result.
In a sliding door driven by means of a spindle drive, such rigid drivers are disadvantageous, because unwanted movements of a respective sliding door leaf are transferred onto a threaded spindle of the spindle drive. Therefore, such a threaded spindle, as a rigid member, may be exposed to excessive loads, and may be damaged through bending, for example, which may interfere with the automatic operation of the sliding door or may even result in failure of the drive.
Similar risks are given in a sliding door which is driven by a linear motor. In this case, rigid drivers are likewise disadvantageous. A rotor needs to have a distance to the stator of the linear motor, which distance lies in a relatively small tolerance range. Furthermore, the distance between rotor and stator is relatively small. If the sliding door leaf moves away from the stator, for example due to an uneven guiding rail, the rotor is entrained and moved away from the stator. This circumstance may lead to the fact that the distance between rotor and stator becomes too large for a smooth operation of the linear motor.
Therefore, the object of the invention is to at least reduce the above mentioned disadvantages.
This problem is solved with a driver device according to claim 1. Advantageous further developments are set forth in the dependent claims.
An inventive driver device for a panel to be moved along a travel path has a driver member, which is adapted to be mounted stationarily to a driving part of a linear motor. Furthermore, the driver device has a spring element, which is mounted to the driving part and is propped up at a side of the panel to be moved, which faces the driving part and is pre-tensioned to a certain degree. In addition, the driver member, at least with regard to a direction of the pre-tensioning, is loosely coupled to the panel to be moved. This means, the driver member is not coupled to the panel to be moved, therefore not rigidly connected. The spring element is pre-tensioned to a certain degree such that the driving part and the driver member are pressed away from each other. It is thereby possible to compensate for unevenness along the travel path of the panel to be moved or at least to dampen it, without having to greatly modify the overall structure.
With an end facing the panel to be moved, the driver member engages in a reception portion of the panel to be moved. In this case, a penetration depth of the driver member is smaller than a depth of the reception portion of the panel to be moved. It is thereby insured that the panel to be moved can move towards the driver member up to a predetermined measure, without having any effect on the driver member and thus on the linear drive.
The driver member, at an end facing away from the panel to be moved, is disposed and configured to be pivotable at least about an axis transverse with regard to a direction of movement of the panel to be moved and transverse with regard to a direction towards the panel to be moved. This is advantageous in that even jerky movements of the panel to be moved can be compensated for or can at least be damped in the travel direction.
Preferably the driver member has an insertion portion. In contrast thereto, the panel to be moved has a mounting portion with a reception. The insertion portion is formed such that, upon insertion into the reception, it is clamped in or it latches with the reception. Thereby, a particularly simple installation is provided. Screws or other attachment means are not required.
The insertion portion has latching projections, which preferably extend parallel to each other and have a predetermined distance to each other. The above described reception of the mounting portion has a slot-shaped opening at least in an area which is nearest to the driver member. This opening has an opening width, which is at least slightly smaller than a distance of exterior ends of the latching projections to each other, the slot-shaped opening extending parallel to a longitudinal extension of a respective latching edge of one of the latching projections. Such a latching connection provides a particular simple installation, the driver member with the latching projections is put into the reception and the projections automatically latch with the reception.
Preferably the spring element is configured as a hinge spring. With one end, the hinge spring is propped up at a side of the driving part facing the panel to be moved or is stationarily mounted thereto. With the other end, it is propped up at a side of the panel to be moved, which faces the driving part. Thereby, the hinge spring is fixed in place at one end in its relative position with regard to the driver member. If the panel to be moved presses on the hinge spring, the latter is able to be compressed in that the other end, propped up at the panel to be moved, can move away from the one end of the hinge spring.
As an alternative, the spring element can be configured as a helical spring. According to the invention, with one end, the helical spring is propped up at a side of the driving part facing the panel to be moved and, with another end, it is propped up at a side of the panel to be moved, which faces the driving part.
The spring element and the driver member are preferably configured integrally. In this case, the spring element forms a spring portion and the driver member forms a driver portion of the inventive driver device. The integral configuration simplifies the installation, only a single piece is to be installed.
In this case the driver portion, according to the invention, preferably has a reception, which, in an inserted condition, is configured such as to reach a latching engagement or clamping engagement with a complementarily configured counter-piece in the area of the reception, which piece is conformed or disposed at the driving part. This means the driver device is simply clipped into the counter-piece or latched with the latter, which represents a very simply installation.
Further features and advantages of the invention will become apparent from the following description of preferred embodiments, in which:
As shown in
As an alternative, the lower rollers 6 are omitted such that the sliding door leaf 1 is received in the guiding profile 10 in a freely floating manner.
At a top side, i.e., at a side facing the guiding profile 10, when seen in the y-coordinate direction, the upper frame part 5 has respectively one roller mounting 7 preferably at both ends,
In the example illustrated in
Above the guiding rollers 21, a driving profile 20 is fitted or inserted into the guiding profile 10. The driving profile 20 is intended to receive or to support parts of a linear drive system, which is not visible in
In a section,
A drive motor 54 is accommodated in a driving profile 20, respectively in a motor mounting 23. An output shaft of the drive motor 54 is operatively coupled to a threaded spindle 52. The threaded spindle 52 is freely rotatably supported in a spindle bearing 53. According to
As an alternative, the through-openings are provided with a female thread into which the threaded spindle 52 is screwed. As an alternative, a bearing bushing is fitted into the through-opening, which bushing has a female thread on the inside into which the threaded spindle 52 is screwed. It is thereby possible to manufacture the respective bearing part from an inexpensive material and to produce only the bearing bushing from a material, which is suitable for bearing the threaded spindle 52. Preferably, the bearing bushing is freely rotatably disposed within the through-opening. As shown in
A driver 51 according to a first embodiment of the invention likewise has a through-opening for the reception of the threaded spindle 52 and has a female thread on the inside, into which the threaded spindle 52 is screwed. The driver 51 may have an above described bearing bushing with the restriction that the bearing bushing is disposed torque-proof with regard to the driver 51. In addition, at an end facing away from the sliding door leaf 1, the driver has a roller, the axis of rotation thereof extending in the ±z-coordinate direction in
In
The one stator module is or more stator modules are preferably inserted respectively into a reception profile, which is adapted to be inserted into the above described driving profile 20. This means, instead of the above described linear drives as complete modules, in this case, just the stator 30, as a component of the linear motor 2, is inserted into the driving profile 20. The reception profile is preferably formed such that, during insertion into the driving profile 20, it gets locked in order to be reliably retained. As an alternative, latching connections, screw connections or all other attachment options are possible.
As an alternative, each stator module is directly inserted into the driving profile 20.
Preferably, the stator modules have a height hS, which is inferior to a height hA of a reception space of the driving profile 20 for the stator 30. This means that a hollow space is provided above the stator. This hollow space is useful for example if, when seen in ±z-coordinate direction in
The ends of the sidewall sections 22, facing away from the horizontal wall section 24, are adjoined by projections 25, which are configured parallel to the horizontal wall section 24 and are facing each other. Upper surfaces of the projections 25 form bearing surfaces for the stator 30. The stator 30 is thus resting with an underside on these projections 25.
The rotor 40 associated to the linear motor 2 is formed by means of one or more rotor parts 41, which, when seen in the ±z-coordinate direction in
In order to prevent the rotor 40 from sticking to the stator 30, the rotor members 41 are provided with rotor rollers 45. Advantageously, the rotor rollers 45 are disposed such as to roll respectively on an underside of the above described projections 25 of the driving profile 20. Thus, the projections 25 have several functions. On the one side, they serve to support the stator 30 on the top and the rotor 40 to the bottom. On the other side, in conjunction with the rotor rollers 45, they guarantee a predetermined minimum distance between stator 30 and rotor 40. Thereby, in terms of an interaction between the stator 30 and the rotor 40, a desired operation of the linear motor 2 is made possible. Furthermore, the rotor 40 is guided along the projections 25 and thus along a travel path to be respected. For this purpose, the rotor rollers 45 each have preferably at least one wheel flange.
Between the rotor 40 and the sliding door leaf 1, preferably a driver device is provided according to another embodiment of the invention shown in
In contact surfaces with the connecting pin 44, the reception is preferably coated with an elastic plastic material or is formed by means of this plastic material. Thereby, despite a constant contact between the connecting pin 44 and the reception, a certain play is possible between them without resulting in delays in the movements of the rotor 40 and the sliding door leaf 1, and therefore without resulting in a jerky or irregular movement of the sliding door leaf 1.
Preferably, the reception is configured such that the sliding door leaf 1 can move to a predetermined extent in the ±z-coordinate direction with regard to the connecting pin. For this purpose, when seen in the ±y-coordinate direction in
As an example, in
Preferably already in a resting state of the sliding door leaf 1, the spring elements 60 are pre-tensioned. Thus on account of the spring elements 60, the rotor 40 is pressed in the direction of the stator 30. In conjunction with the rotor rollers 45 it is thus guaranteed that the rotor 40 has an almost constant distance to the stator 30, which is required for the operation of the linear motor 2. Furthermore, the spring elements 60 achieve that possible unevenness in the travel path of the sliding door leaf 1 and/or other movements of the sliding door leaf 1, as a desired, so to say “ideal” travel motion, are not transferred onto the rotor 40, at least not to a considerable extent. Despite the fact that the sliding door leaf 1 is entrained by the rotor 40, the furthest possible uncoupling of rotor 40 and sliding door leaf 1 is realized with regard to unwanted movements of the sliding door leaf 1. In addition, an attraction force is possible between the rotor 40 and the stator 30, which is smaller than the weight force of the rotor 40.
As an alternative or in addition thereto, it is intended to pivotably support the connecting pin 44 in the body 42 to a predetermined extent, at least about an ±x-coordinate axis in
The mounting portion 46 is preferably manufactured from an elastic material. The spring elements 44 abut the mounting portion 46 laterally such that they clamp the mounting portion 46 to a predetermined extent and are thus able to relieve the connecting pin 44.
According to an embodiment of the invention shown in
In the linear drives, based on a traction means, usually rigidly formed drivers are intended for operatively connecting the traction means to the respective sliding door leaf 1.
A separate connecting element 43 may be provided for each helical spring, as shown in the centre of
In both variants, the spring element 60 additionally assumes a driver function with regard to the sliding door leaf 1.
If no mounting portion 46 is provided, according to a third embodiment of the invention shown in
In
Furthermore, the spring element 60 is made from an elastically deformable material. Analogously to the above described embodiments, free ends of the spring element 60 are propped up at an upper surface of a sliding door leaf 1 or of an upper frame part 5. Preferably, one end is configured to be flatter than the respective other one and is fitted into a reception configured at the upper surface of the sliding door leaf 1 or of the frame part 5.
An alternative spring element 60, according to yet another embodiment of the invention shown in
An alternative spring element 60, according to yet another embodiment of the invention shown in
According to an embodiment of the invention shown in
Yet another embodiment of the spring element 60 is shown in
Even if the invention has been primarily described in conjunction with a linear motor as a linear drive, it is readily applicable to all other linear drives and to manually suspended sliding doors as well.
In addition, the driver devices are exchangeable with each other or can be combined.
Number | Date | Country | Kind |
---|---|---|---|
10 2007 032 476.8 | Jul 2007 | DE | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
---|---|---|---|---|
PCT/EP08/05550 | 7/8/2008 | WO | 00 | 1/11/2010 |