Drive unit for a sectional door

Abstract

Drive of a sectional door leaf (1) consisting of individual door leaf elements (2, 3) connected to each other by means of an electromechanical drive device (7, 9) with a control unit (8) arranged on or in an upper door leaf element (3) and with at least one drive shaft (13) located in a side region (19) of the upper door leaf element (3), wherein a drive wheel (12) is arranged at the end of which is in engagement with a stationary engagement means (11) embedded in a drive rail (6) mounted above a horizontal drive rail section (10), wherein the drive shaft (13) passes with clearance outside the upper door leaf element (3) through a guide tab (14) with at least one guide roller (15) for straight-line guidance in the drive rail (6).

Description

The invention relates to a drive for a sectional door with an electromechanical drive device which is arranged on or in an upper door leaf element. From DE 1 959 441 U1, a garage tilting door is known, the door leaf of which is connected to a stop frame surrounding the door opening by means of spring-loaded compensating arms hinged at its lower end, and by means of rollers rotatably mounted at its upper end, which are guided in substantially horizontal guide rails connected to the upper end of the stop frame. The rollers are connected to each other via a connecting shaft and to an electromechanical drive device attached to the door leaf. The connection between an upper panel and a lateral guide rail, in which a carriage is driven by a roller chain, is described in DE 21 2007 000 008 U1. A roller holder is attached to the panel, which simultaneously ensures the connection to a connecting rod with the drive carriage. DE 10 2004 059 895 A1 discloses an electromechanical drive for a single- or multi-part gate leaf, comprising an electric motor that can be moved back and forth along a guide rail between end positions. The motor is powered by cable-free electrical power supply means, and the drive unit also includes a battery. The drive unit is connected to the gate leaf via a articulated rod. Gates with a laterally guided, drive-equipped connection are disclosed in EP 0 0222 0204 A1. To increase operational reliability, one or more motors are provided, which are attached to the gate leaf and have at least one gear that meshes in a separate rail, this rail running parallel to the lateral guide tracks. Preferably, the gears and the lateral guide rollers are arranged coaxially, with the guide rollers being mounted to rotate freely. EP 1 176 280 A1 describes a gate, in particular a garage door, comprising a gate leaf and a track on each side of the gate leaf. An electric gate drive is provided for opening and closing the gate leaf. A flexible extension element is also arranged on the track. The gate drive includes a drive motor with a drive wheel that is guided in the track and partially enclosed by the extension element. When the drive wheel is driven, the drive motor is movable along the track by means of positive engagement and / or frictional engagement of the drive wheel with the underside of the extension element facing the track. German patent DE 10 2015 008 912 A1 also describes a relocatable drive unit for a multi-part sectional door constructed from hinged door elements. The door elements are guided in lateral guide rails, allowing for repositioning. This repositioning of the door elements is ensured via a separate connecting arm to the drive unit, which has a housing with a drive pinion on its rear side for engagement with a toothed belt. The object of the invention is to provide a drive for a sectional door leaf in which the interior space, which is closed off to the outside by the sectional door leaf, is not affected by a drive device, so that such a drive can also be installed in small, confined spaces. The object of the invention is achieved by the features of claim 1. The dependent claims following claim 1 contain a further embodiment of the inventive concept. To avoid limiting the size of an interior space, such as a garage, with fixtures mounted below the ceiling or along the sides, an electromechanical drive unit is integrated within the upper door panel of the sectional door. For door panels with minimal thickness, the drive unit can also be partially embedded within the upper door panel segment and partially located outside the door panel. Such an electromechanical drive device has a drive shaft in an end face or partially in the area of ​​an end face of the upper gate leaf element, which is fitted with a drive wheel at its end. The drive wheel can be designed differently depending on the design of the engagement element, which is contained within the drive rail for moving the gate leaf. In a preferred embodiment, the engagement element can be designed as a toothed belt, which is arranged in the base of the essentially C-shaped drive rail and fastened at least at its end. To maintain the tension of the toothed belt over a longer period, a tensioning device can be provided at least at one end of the toothed belt. In another preferred embodiment, it is possible that the drive wheel is equipped with such teeth which interact in a toothing located in the base of the drive rail. To ensure smooth movement of the sectional door panel, a guide plate with play is positioned on the drive shaft, at least in the area of ​​the drive wheel. This play allows the guide plate to move, enabling at least one guide roller, preferably two, to be arranged one behind the other within the guide plate. When the drive wheel moves the door panel segment, the guide rollers located in front of the drive wheel ensure precise guidance of the upper door panel element. In a preferred embodiment, guide elements are provided within the drive rail, with which the at least one guide roller interacts. This previously described embodiment of the drive wheel results in the upper gate leaf element being free, at least in its upper region, of the rollers otherwise used. The lower end of the gate leaf element is provided with a roller that is guided in a guide rail arranged below the drive rail on each side. This guide rail has a substantially vertical section that transitions via a guide arc into a substantially horizontal guide section. The horizontal guide section and the drive rail can be connected to each other. For larger gate widths and heights, it is possible that on each side above the guide rails otherwise necessary for changing the position, there is a drive rail with an engagement element, which is driven by an electromechanical drive device of the type described above. To enable autonomous operation, and thus eliminate the need for wiring of at least one drive unit, a control unit can be integrated within the upper gate leaf element. An energy storage device in the form of a battery can be used to power both the control unit and the drive unit. When the gate leaf is closed, this battery can be recharged. The invention is described in more detail with reference to a possible embodiment shown in the figures. It shows: Fig. 1 A sectional door panel, viewed from an interior; Fig. 2 a detail section from the upper right area according to Fig. 1; Fig. 3 as Fig. 2 omitting the drive rail; Fig. 4 a view of the guide rollers and the drive unit. Figure 1 shows a sectional door panel 1, which consists of individual door panel elements 2 connected to each other by pivots and transitions via essentially vertical guide sections 4, with guide rail arcs 5 adjoining them above, into horizontal guide sections of guide rails. The view is directed towards the inside of the sectional door panel 1. In addition to the door panel elements 2, there is an upper door panel element 3 in which a control unit 8 and drive devices 7, 9 are schematically shown. Above the horizontal guide rail sections 10, a drive rail 6 in a straight configuration is shown on each side. Figure 2 shows the drive rail 6, with the upper portion of the essentially C-shaped drive rail 6 omitted at the end to allow a view of the underlying mechanism. An engagement element 11, which in this embodiment is represented as a toothed belt, is embedded in the base of the drive rail 6. In a preferred embodiment, the engagement element 11 can be embedded in a guide unit located within the drive rail 6, preventing it from deflecting laterally under load. The drive unit 7 is designed with a drive shaft 13 which projects from the upper gate leaf element 3 at a side area 19, shown in this embodiment in Figs. 2 and 3. The drive shaft 13 is fitted with a drive wheel 12 at its end. This can also be seen in particular in Fig. 3. The drive shaft 13 is operatively connected to a guide lug 14 via a bore that allows free rotation of the drive shaft 13 within the lug. In this embodiment, the guide lug 14 has two guide rollers 15 which are mounted on axles 16 and connected to the guide lug 14. As further illustrated in Fig. 2, the guide tab 14 is located towards the interior of the guide rail 6 and thus points in the direction of the drive rail 6. This makes it clear that the guide rollers 15 are guided within the drive rail 6 in front of the drive wheel 12, which guarantees smooth guidance of the upper gate leaf element 3. At the same time, the illustrations clearly show that no further guide unit or roller is present in the upper area of ​​the gate leaf element 3, either directly or via additional fittings. In Fig. 4, for example, rollers 18 are shown at the lower ends of each of the individual door leaf elements 2, mounted on fittings. In the closed position, these rollers 18 engage in the substantially vertical guide section 4 of the guide rail and, during the opening of the sectional door leaf 1, are then transferred via the guide arch 5 into the substantially horizontal guide section 10. Due to the additional placement of the drive rail 6 above the guide section 10, the upper door leaf element 3 will not assume a horizontal position after the opening of the sectional door leaf 1, but a slight incline, which is caused by the difference between the two guide areas. Reference sign 1 Sectional door leaf 2 Door leaf element 3 Upper door leaf element 4 Vertical guide rail section 5 Guide rail bend 6 Drive rail 7 Drive unit 8 Control unit 9 Drive unit 10 Horizontal guide rail section 11 Engagement point 12 Drive wheel 13 Drive axle 14 Guide tab 15 Guide roller 16 Axle 18 Running roller 19 Side section

Claims

Drive of a sectional door leaf (1) consisting of individual door leaf elements (2, 3) connected to each other by means of an electromechanical drive device (7, 9) with a control unit (8) arranged on or in an upper door leaf element (3) and with at least one drive shaft (13) located in a side region (19) of the upper door leaf element (3), wherein a drive wheel (12) is arranged at the end of which is in engagement with a stationary engagement means (11) embedded in a drive rail (6) mounted above a horizontal drive rail section (10), wherein the drive shaft (13) passes with clearance outside the upper door leaf element (3) through a guide tab (14) with at least one guide roller (15) for straight-line guidance in the drive rail (6). Drive according to claim 1, characterized in that the engagement means (11) is a toothed belt which is arranged in the base of the approximately C-shaped drive rail (6) and is fastened at least at the end. Drive according to claim 1, characterized in that, starting from the drive axis (13) with the drive wheel (12), the guide tab (14) extends in the direction of the engagement means (11) when the sectional door leaf (1) is closed. Drive according to claims 1 and 2, characterized in that the at least one guide roller (15) is guided by guides within the drive rail (6) and / or by the engagement means (11). Drive according to claim 1, characterized in that the toothed belt has a tensioning device at least at one of its ends as an engagement means (11). Drive according to claim 1, characterized in that an electromechanical drive device (7, 9) is provided on or in each side area (19) of the upper gate leaf element (3). Drive according to claim 1, characterized in that, in the case of sectional door leaf thicknesses that have only small dimensions, the drive device is also partially embedded in the upper door leaf segment and is formed with a part outside the door leaf element. Drive according to claim 1 characterized in that the control unit (8) is associated with an accumulator which can be charged in the closed position of the sectional door leaf (1). Gate with a drive unit (7) and / or (9) in conjunction with a drive axle (13) which has a drive wheel (12) at its end which engages with a stationary engagement means (11), according to one or more of the preceding claims.

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