The present application is a U.S. National Stage of International Patent Application No. PCT/EP2006/006687 filed Jul. 7, 2006, and claims priority under 35 U.S.C. §119 and 365 of German Patent Application No. 10 2005 032 327.8 filed Jun. 8, 2005 and of European Patent Application No. 05 021 280.2 filed Sep. 29, 2005. Moreover, the disclosure of International Patent Application No. PCT/EP2006/006687 is expressly incorporated by reference herein in its entirety.
1. Field of the Invention
The invention relates to a guiding mechanism for sliding action arrangements, in particular leaves or doors, having a running-rail profile which is mounted on rollers or sliding elements and is possibly provided with a superstructure.
2. Discussion of Background Information
In the case of known guiding mechanisms of the above-mentioned type, as are customary nowadays, for example, in sliding-door construction, the actual door is additionally accompanied by the clamping-in part which is necessary for functioning. Thus, for example in the case of EP 0 279 155 B1, a sliding door comprises, as a carrier for a box profile, two roller blocks which are arranged at a distance apart from one another in a direction transverse to the passageway which is to be closed off, and outside this passageway. The roller blocks each bear a top pair of rollers and a bottom pair of rollers, which are designed as grooved rollers. The top grooved rollers engage in two parallel ribs in the top box-profile wall, while the bottom grooved rollers are guided in two parallel ribs in the bottom box-profile wall, in the vicinity of a longitudinal slot in the box profile. The box profile extends from the front door edge to the outer roller block. This results in the door being extended to a quite significant extent, with adverse effects on the use of materials, the transporting costs, operational costs, space required for installation and the appearance. The lever formation in these constructions is likewise disadvantageous, as a result of which the door statics, the running-rail profile and the running rollers have to meet stringent requirements.
If there is a shortage of space, solutions which provide telescopically displaceable doors with movable roller carriers are already known, for example from DE 41 37 442 A1. This known sliding door has two panels. The first panel, comprising two panel parts, is supported such that it can be displaced via bearing blocks fastened on the ground. The second panel is provided between the two panel parts. The second panel is guided such that it can be displaced via two roller blocks which are borne by plates which are fastened on guide rails of the panel parts of the first panel and connect these rails to one another. A drive is provided in order to open and close the sliding door, and the drive causes the first panel to move in a controlled manner in relation to the second panel. In the case of such doors, the door and the running rollers are subjected basically to the same loading as in the case of the first-mentioned guiding mechanism.
The invention provides a guiding mechanism of the above-mentioned type in which the leverages are more favorable and, accordingly, the loading to which the rollers and roller bearings are subjected, and the bowing of the door and running rail, are reduced.
According to embodiments, a stationary roller carrier and at least one movable roller carrier are provided, and the movable roller carrier is moved into its operating position in a manner essentially free of load moments.
This means that essentially just a single carrier, instead of the 2 rolling blocks, is required for the door, and lower loading on the rollers and roller bearings can be achieved by the displaceable lever construction formed by the carrying arms.
The invention can be used not just for doors but also, for example, in rack and shutter systems, canopies, coverings, mobile bridges, working and formwork platforms, moles for tunneling and advance working machines for mining, pull-out and push-out mechanisms in mechanical engineering and equipment construction and also partitions and furniture.
According to an expedient, further embodiment of the invention, the movable roller carrier is mounted in a displaceable manner in an open, partially open or closed housing provided in the stationary roller carrier, and it can be anchored for its operating position.
An expedient, further embodiment of the invention provides a second movable roller carrier which is mounted such that it can be displaced in the opposite direction to the first movable roller carrier and which can be anchored for its operating position.
According to an expedient, further embodiment of the invention, the movable roller carrier can be recessed wholly or partially in the ground and can be moved from there, by means of suitable control, coupling and drive elements, into its operating position.
According to an expedient, further embodiment of the invention, one or more rollers can be adjusted vertically and/or horizontally on the stationary roller carrier.
According to a further embodiment of the invention, the second carrying arm comprises two spaced-apart, parallel and interconnected second plates. The torsional rigidity of the second carrying arm can be increased in this way.
According to a further embodiment of the invention, a further one of the pairs of rollers is fitted in a stationary manner on the housing. These serve, inter alia, for shifting weight during door movement, and the loading on the roller bearings can thus be reduced yet further in some cases.
According to a further embodiment of the invention, the further pair of rollers is fitted on the housing such that it can be adjusted essentially in the longitudinal direction of the housing. The further pair of rollers can thus be adapted to the box profile and space can be saved.
According to a further embodiment of the invention, the carrying arms are guided on bearing elements fitted in the housing. These bearing elements are preferably plate bearings. In some cases, it may be advantageous to use these, or combine them, with roller bearings.
According to an expedient, further embodiment of the invention, the carrier comprises an installation plate which can be fastened on the ground and bears the housing.
The invention will now be explained in more detail with reference to exemplary embodiments. In the figures:
a-15c show schematic side views of a door according to the prior art, similar to EP 0 279 155 B1, for comparison with the invention,
a-16c show schematic side views of a door with a first embodiment of a guiding mechanism according to the invention, in particular for relatively small doors,
a-17c show schematic side views of a door with a second embodiment of a guiding mechanism according to the invention, in particular for medium-sized doors, with just one movable roller carrier provided,
a-18c show schematic side views of a door with a third embodiment of a guiding mechanism according to the invention, with the movable roller carrier(s) being configured to accompany the door movement and being arranged in the region of the running-rail profile, and
a-19c show schematic side views of a door with a further embodiment of a guiding mechanism according to the invention.
The most important versions of the invention are explained, in the form of simplified side views of doors with guiding mechanisms, with reference to
a illustrates an elongate concrete foundation 1′.sub.1 with roller blocks at the front end, at a position A, and at the rear end, at a position B. The running rollers of these rolling blocks slide in a running-rail profile 19, on which a door 49′ has been constructed. As can be seen, the leverages in
Instead of installing the running rollers (or sliding elements) at the positions A and B, as has been customary up until now, the invention proposes to arrange the running rollers for example according to
For medium-sized doors, it is recommended to use the version which is shown in
For particularly large doors, it is recommended to use the version which is shown in
The invention advantageously makes it possible to utilize the load displacement during a movement cycle. This is because this “gravitational-force control” allows the movable roller carrier to be moved without full weight loading, and thus without any significant amount of force being applied, into that position which is referred to here as the operating position and in which, once this roller carrier has been anchored, the door can support itself as soon as its center of gravity has moved beyond the running rollers responsible for shifting weight. The movable roller carriers have to be independent of one another in order for it to be possible to execute positioning which is free of load moments.
In the case of the above described sliding door, the running rollers fitted on the movable roller carriers are intended for absorbing the compressive loading, while the stationary rollers, as an abutment, have to absorb a tensile force. In the case of some door variants, the number of movable roller carriers means that tilting moments no longer occur and the stationary roller carrier, rather than being subjected to tensile forces, is then likewise subjected to compressive forces, just lateral directing forces or, temporarily, no forces at all.
The movable roller carriers have to be moved into their operating position according to the invention. This can take place in various ways. One possibility is for the movable roller carriers to be manually pulled out and set down and, if appropriate, locked. Of course, these operations may also be automated. The technical devices and associated methods are known to the person skilled in the art and need not be explained in any more detail here. Examples of a few expedient methods will be explained at a later stage in the text with reference to
The pair of rollers 14, 15 is fitted in a slot 16, running essentially in the longitudinal direction of the housing 3, and is secured in an adjustable manner in this slot 16, in which case it can be adapted to the running-rail profile. The further pair of rollers 14′, 15′ is expedient, in particular, when, on account of the length ratios between the running rail and a movable roller carrier, the shifting of weight of the running rail has to take place in the region of the housing 3 rather than via a pair of rollers of a displaceable roller carrier. In this context, it may be advantageous for the outer sides of the running rail to be curved upward to a slight extent. As
In
There are various possible ways of moving the movable roller carrier into its operating position. In many cases, it is advantageous to use gravitational force for pulling-out and/or pushing-out purposes. For example, a weight can be raised via a carrying cable, which is deflected by means of pulleys, as the roller carrier is pushed in. The pushing-out movement then takes place in a weight-induced manner. The disadvantage here for many applications is that the mechanism cannot be accommodated in its entirety within the running rail. A number of expedient, space-saving drive arrangements will be explained hereinbelow by way of representation.
This variant is particularly advantageous, inter alia, if the proposed guiding arrangement is used for drawer applications. In this context, it may be advantageous for the running rail to be configured with a number of tracks, in which case one track is available for the stationary roller carrier and another track is available for the movable roller carrier.
If there is a need for a system which allows a full pulling-out movement or more, this can, of course, be achieved, in a manner analogous to known systems, by using a combination of two or more guiding arrangements according to the invention. A further configuration which is advantageous in this context consists in the end of the running rail, or at least one running surface (track), being extensible, by means of a suitable mechanism, as it moves, in order thus to allow a correspondingly longer movement path.
If an embodiment provides just one movable roller carrier for moving, for example, in the closing direction, a supporting roller or a similar measure has to be provided in the opening direction.
If an embodiment provides just a single movable roller carrier for both movement directions, an additional measure has to ensure that displacement of the movable roller carrier into its operating position can take place, according to the invention, in a manner essentially free of load moments. In this case, the stationary roller carrier alone performs the task of guiding the running rail to the extent which is necessary for the period of carrying-arm displacement. An advantageous possibility, in this context, is to use a curved lifting track on the running rail. A further such suitable measure may comprise, for example, a raising mechanism fitted in the region of the stationary roller carrier. This mechanism may comprise active, motor-operated lifting elements or straightforward lifting guides on the running rail. In the case of this last-mentioned embodiment, thickened portions provided on the underside or inside of the running rails move, as the door itself moves, over rollers provided for this purpose on the stationary roller carrier and raise the running rail slightly. The movable roller carrier can then be displaced into its other operating position without any great amount of force being applied. It is necessary for this movable roller carrier to be correspondingly fitted at both ends with running rollers and to be suitable for being anchored according to the invention in the operating position at both ends. It is likewise possible for a lowering movement of the bearing elements or of the running rollers to be utilized in order to displace a movable roller carrier in a manner more or less free of load moments. The lowering and raising movements can take place in a variety of different ways using the known technical devices, for example using magnetic, hydraulic, pneumatic or mechanical arrangements. The advantage of these variants is the possibility of configuring the sliding-action arrangement in a height-adaptable manner, that is to say of achieving different height positions in the open and closed states.
In contrast to all the known guiding mechanisms, the variants according to the invention make use of at least one movable roller carrier in the form of a carrying arm which, in its operating position, can absorb forces via rollers or sliding elements provided for this purpose and dissipate them, on the opposite side, via the bearing location and/or the anchoring location. The characteristic feature here is that there is no relative movement between the carrying arm and bearing elements at the bearing locations in the highly loaded state.
A movable carrying arm may also be provided with additional rollers, approximately on the anchoring side, in order not to slide along the bearing locations as it is displaced.
Free of load moments here means a range from not subjected to loading to subjected to weight-induced loading by a force which is not significantly higher than the weight, that is to say is not multiplied by the lever factor.
Operating position is intended to mean that position or positions in which a movable roller carrier can absorb, and dissipate, forces by being anchored.
The essential advantages of the invention used for self-supporting sliding doors may be summarized as follows:
1. The door leaf is shortened because the clamping-in part is virtually completely done away with. This results in savings in respect of materials, transporting costs and coating costs, and the amount of space required for installation is reduced.
2. The freely projecting length of the door leaf, for a comparable through-passage width, is smaller. The door leaf and the running rollers are subjected to less loading.
3. The foundation is reduced in size and thus becomes less expensive.
The door runs more easily—with all the accompanying positive effects on driving, securement and service life.
5. The door can be rendered more esthetically pleasing because it is possible to dispense with elements used for static stiffening purposes.
Number | Date | Country | Kind |
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10 2005 032 327 | Jul 2005 | DE | national |
05021280 | Sep 2005 | EP | regional |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/EP2006/006687 | 7/7/2006 | WO | 00 | 1/8/2008 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2007/006515 | 1/18/2007 | WO | A |
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Number | Date | Country | |
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