EP0649492B1 - Motorised drive device for a door leaf - Google Patents

Abstract

A motorised drive device for a door leaf which has a door leaf shaft (6) coupled thereto, to which the drive shaft (26) of a drive motor unit (5) contained in a drive housing (25) is connected via a torque transmission device contained in a gear casing (2, 3), which has an input shaft (7) connected to the drive shaft (26) of the drive motor unit (5) and an output shaft (8) connected to the door leaf shaft (6) which, looking perpendicularly to the longitudinal axis of these shafts (7, 8), is at a distance from the input shaft amounting to a multiple of the sum of the half-diameters of the intercoupled gear wheels arranged on these shafts. To reduce the torque-determined holding load for the drive unit (5), the drive casing (25) of the drive motor unit (5) is maintained fixed and secured (29, 30) to the transmission casing (2, 3) of the torque transmission device so as not to rotate in such a way that torques between the door leaf shaft (6) and the drive shaft (26) are exerted in the manner of a rigid lever.

Description

The invention relates to a motor drive device for a door leaf, especially overhead door leaf such as roller door curtain, Sectional door leaf or the like, one geared to the door leaf connected door leaf shaft to which the output shaft of a drive motor unit accommodated in a drive housing Interposition of a housed in a transmission housing Torque transmission device is connected, the one input shaft connected to the output shaft of the drive motor unit and an output shaft connected to the door leaf shaft has, the input shaft and the output shaft perpendicular to seen the longitudinal axes of these waves a distance that a multiple of the sum of the radius of the radius of the waves gear wheels connected to one another in terms of gear.

Such a drive device is known from DE-A-3915637, in such a way that between a drive unit and the Door leaf shaft arranged transmission device between the output shaft of the motor unit and the door leaf shaft Gear ratio includes, assuming that the output shaft to the drive motor directly, that is without an intermediate Gear is assigned. According to the embodiment should hit the door leaf with resistance and thereby conditional pivoting movement of the transmission housing a corresponding Emergency signal - for example an interruption in the power supply to the drive motor - be derivable and a damped start be made possible.

The invention has for its object a drive device to provide the type mentioned at the beginning, in which the torque-related Holding force for the drive unit is low.

This is achieved according to the invention in that the drive housing of the drive motor unit held stationary and with the transmission housing the torque transmission device is non-rotatable is connected such that torques between the door leaf shaft and the output shaft is added in the manner of a rigid lever are.

According to the invention, the twist-proof connection between the transmission housing and the drive housing on the drive unit transmit a reaction moment that is proportional to the long lever arm of the transmission housing between the drive unit and the door leaf shaft is effective so that the over this long lever arm acting reactive force from the fixed Bracket of the drive housing must be included, relatively is small.

At the same time one achieves by means of the spacing due to the lever arm length the drive unit from the door leaf shaft a variety of spatial different fixing options for the drive unit, so that in the most favorable positioning you have a large size Has choices. With this in mind is special preferred embodiment of the invention a determination between the drive housing and transmission housing in different angular positions enables, in particular through a number of openings an arc around the output shaft of the drive unit arranged in a corresponding wall of the drive housing, the one with an opening in the adjacent housing wall of the transmission housing correspond in such a way that the number of openings various pivot positions in the drive housing between the housings the implementation of a connecting the housing Bolzens is enabled.

In the known device, the transmission housing takes the Translation device on, in such a way that this housing can be kept narrow and therefore corresponding to the side of the door leaf requires little space. The present invention can also work with such a design of the transmission housing, in the foreground, however, is the idea of the long lever arm, which is why the required transmission gear as well Drive motor unit assigned, that is between the drive motor and whose output shaft can be arranged and the Transmission housing only a single-stage gearbox training, if necessary has a particularly space-saving ratio of 1: 1. Then you get an even narrower and flatter design of the Transmission housing, which increases the arrangement options and improve the space requirement and the transmission housing so far exclusively fulfills the purpose of the long lever arm.

Figur 1

eine Prinzipskizze der Anordnung eines um eine Torblattwelle herum verschwenkbaren Übertragungsgehäuses, an dessen der Torblattwelle abgewandten Eingangsende ein Antriebsaggregat angeschlossen ist, in schematisierter Seitenansicht;

Figur 2

eine schematische Ansicht in Achsrichtung der Abtriebswelle des Antriebsaggregates;

Figuren 3 und 4

ein Schnittbild senkrecht zur Wellenachsrichtung durch ein Ausführungsbeispiel der Übertragungseinrichtung sowie ein Schnittbild mit den Achsen der Wellen in Schnittebene;

Figuren 5 und 6

Schnittbilder ähnlich denjenigen nach den Figuren 3 und 4 eines Ausführungsbeispieles der Übertragungsrichtung mit nur einstufiger Getriebeausführung;

Figur 7 a) bis d)

skizzenhaft verschiedene Anordnungsmöglichkeiten für die Antriebseinrichtung unter unterschiedlichen Winkelstellungen zwischen Übertragungsgehäuse und Antriebsgehäuse als Beispiele.

These and other preferred embodiments result from the subclaims, in particular with reference to the exemplary embodiments shown in the drawing, the following description of which explains the invention in more detail. Show it

Figure 1

a schematic diagram of the arrangement of a pivotable around a door leaf shaft transmission housing, at the input end facing away from the door leaf shaft, a drive unit is connected, in a schematic side view;

Figure 2

a schematic view in the axial direction of the output shaft of the drive unit;

Figures 3 and 4

a sectional view perpendicular to the shaft axis direction through an embodiment of the transmission device and a sectional view with the axes of the shafts in the sectional plane;

Figures 5 and 6

Sectional views similar to those of Figures 3 and 4 of an embodiment of the transmission direction with only one-stage gear design;

Figure 7 a) to d)

Sketchy different arrangement options for the drive device at different angular positions between the transmission housing and drive housing as examples.

Figures 1 and 2 show dash-dotted lines the longitudinal axis of a Door leaf shaft, as used as a counterbalance shaft for sectional doors, Known roller shaft of a roller shutter or the like Constructions. The total works on this door leaf shaft 6 designated 1 drive device, the two-shell Transmission housing 2, 3 with a joint 4 and a total includes drive assembly designated 5. The drive unit is received in a drive housing 25, the output shaft 26 of the The unit is coaxial with the input shaft 7 or 27 of the transmission device connected, from which in one or more stages Gearbox design the gearbox connection with the output shaft 8 of the transmission device is produced, which in turn is coaxially connected to the door leaf shaft 6. Executions of the result in gear connection within the transmission housing from FIGS. 3 and 4 on the one hand and FIGS. 4 and 5 on the other.

As can be seen from Figure 1, the drive housing 25 is in any one Way held stationary, for example via a bearing on the Side wall of the door opening to be closed Space, on the track support structure or the like more, as can be seen from Figure 7a to 7d. To these different Allowing stipulations is that of the transmission housing adjacent wall of the drive housing with a arranged centrally around the longitudinal axis of the output shaft 26 Row of openings 29 provided during this row of openings opposite wall of the transmission housing 2, 3 a corresponding Has opening, depending on the selected angular position between the housings is aligned with an opening 29, which two A bolt 30 penetrates openings in this selected arrangement are so that the two housings 2, 3 and 25 on the shafts 26th and 7 and these bolts 30 are fixed to one another in a rotationally fixed manner. The transmission housing 2, 3 thus acts with regard to the reaction forces when transmitting torque as a long lever arm, so that the the holder of the drive housing applied forces are low. So the transmission housing can be used for a gate about four meters high easily train three meters long, so that for the stationary Holding the drive housing 25 holding forces to be used are extremely small.

According to FIGS. 3 and 4, the transmission housing can be one or the other Take up most of the gearbox. The total with 1 designated drive device has a transmission housing, that of two at least approximately identical half-shells 2 and 3 exists and held together by means of unspecified screws becomes. The two half-shells 2 and 3 are in the range of one Parting line 4 to each other, approximately through the middle of the housing interior and recorded perpendicular to the axial direction in the housing rotatable gear parts.

In the lower area in the pictorial representation of the exemplary embodiment the housing is a transmission input shaft 7, and in fig upper area indicated a transmission output shaft 6. The transmission output shaft 6 is one with the winding shaft or torsion spring shaft Door leaf connected or - as can be seen from Figure 2 - a Part of this shaft that protrudes into the interior of the housing and with the actual transmission output shaft 8 within the housing against rotation communicates. The transmission output shaft 7 is not shown in FIG illustrated manner to the output shaft of the only indicated Drive motor unit 5 connected or part of this.

Between the transmission input shaft 7 and the transmission output shaft 8, three intermediate shafts 9, 10 and 11 are arranged one above the other. A first sprocket is on the hub of the transmission input shaft 7 12 of smaller diameter arranged or formed non-rotatably, that in the vicinity of the broad shell side facing the motor-side connection 29 of the housing part 2 is located. On the transmission output shaft 8, a sprocket of larger diameter 13 is arranged in a rotationally fixed manner or formed that near the shell broadside of the other Housing part 3 is. The intermediate shafts 9 to 11 each carry pairs of sprockets 14, 15/16, 17/18, 19 one of which is such a smaller one Diameter 15, 17, 19 and their other such a larger one Diameter 14, 16, 18 is. The sprocket pairs 14, 15 and 16, 17 and 18, 19 are coaxially common on both wheels Hub 20 is arranged or formed in a rotationally fixed manner. The order is such that the larger sprocket 14 of the input shaft 7 adjacent first intermediate shaft 9 on the sprocket 12 the shaft 7 aligned or in one and the same orbital plane. The sprocket 15 is smaller in diameter of the first intermediate shaft axially offset from the larger wheel 14 with a small distance and runs in one plane with the chain wheel 16 of larger diameter the up towards the output shaft 8 next following intermediate shaft 10. The sprocket 16 coaxial and again at the same distance as that between the sprockets 14 and 15 to form a pair associated sprocket 17 smaller diameters run in one plane with the sprocket 18 of the last intermediate shaft following in the direction of the shaft 8 11. The chain wheel assigned to the chain wheel of larger diameter 18 19 smaller diameters - again with the same axial Distance to form a twist-proof pair on the common Hub 20 runs in one plane with the chain wheel 13 of larger diameter the transmission output shaft 8. The axes are all Waves 7 to 11 in one plane. From the transmission input shaft 7 seen from the direction of the output shaft 8 are always a gear smaller diameter and one adjacent in the same plane Large diameter gear wheel with each other via an endless chain 21 connected. This results in the following in the output direction Chains working together in the sense of a gradual force transmission Sprocket pairs: 12, 14; 15, 16; 17, 18 and 19, 13.

Because of the same distances between the respective pairs of sprockets per intermediate shaft and the alignment of each by roller chains 21 interconnected sprockets result in an arrangement in which all sprockets and endless chains in two relatively small spaced planes. As can be seen in FIG. 2, the gear is in the shaft axis direction seen particularly narrow, so that the space required on the corresponding Side of the door leaf is correspondingly low.

In the preferred embodiment shown, the housing parts 2 are used and 3 at the same time the bearing of the shafts, in part through bearing training in the opposite shell broad sides 29 and 30 of the housing parts 2 and 3, but partly by one another pins directed towards the inside of the shell broad sides 29 and 30 are formed and in the hubs 20 of the intermediate shafts 9 to 11 intervene. While the input shaft 7 in two housing openings 22 engages, the transmission output shaft 8 is on one side on a pin 23 the shell broad side 30 of the housing part 3 is supported by a bearing 24, while on the other hand an end part 6 of the winding or torsion shaft in a corresponding recess of the transmission output shaft 8 engages. This is a total of the housing 2, 3 and thus that Entire gearbox pivotally mounted about the axis of the shaft 6. The drive motor unit 5 is carried by the transmission input shaft 7 and thus connected to the housing 2, 3.

At 30, the connection between the transmission housing 2, 3 and the drive housing 25 shown, so that the latter is non-rotatable attacks on the lever-like housing 2, 3. For fixed fixing only small forces have to be taken into account.

FIGS. 5 and 6 show a transmission housing 2, 3, that just a single-stage gearbox from that on the input shaft 7 arranged first sprocket 27, the one on the output shaft 8 arranged second sprocket 28 and one spanning the sprockets Endless chain 21 added to the transmission housing is. The gear ratio can be selected 1: 1, i.e. both sprockets 27 and 28 are in the direction of the smallest looping distance or the mobility of the connecting roller chain dimensioned so that you have a particularly narrow and flat training of the arm-shaped transmission housing 2, 3 reached. About that in addition, this transmission device can be made correspondingly light be while the drive unit including a Gearbox is correspondingly heavier. Otherwise causes the bolt 30 connecting the housings 2, 3 and 25 in turn the small one Effect of the transmitted torque on the bracket

Claims (6)

1. A motor drive mechanism for a door leaf, especially a door leaf which is moveable into an overhead position, such as an armoured roller door,
   sectional door leaf or similar, having a door leaf shaft (6) which is connected by means of gears to the door leaf, to which the drive shaft (26) of a drive motor unit (5) which is incorporated in a drive housing (25) is connected in series via a torque transfer mechanism incorporated in a transmission housing (2, 3), which has an input shaft (7) connected with the drive shaft (26) of the drive motor unit (5) and an output shaft (8) connected with the door leaf shaft (6), wherein the input shaft (7) and the output shaft (8), from the point of view of the longitudinal axes of these shafts, are at a distance which represents a multiple of the sum of the radius of the gear wheels (12, 13; 27, 28) on these shafts which are in geared connection with one another,
   characterised in that the drive housing (25) of the drive motor unit (5) is held in place and is connected in a torsionally-rigid manner with the transmission housing (2, 3) of the torque transfer mechanism (29, 30) in such a way that torque between the door leaf shaft (6) and the drive shaft (26) is taken up in the manner of a rigid lever.
2. A drive mechanism according to claim 1,
   characterised in that during transfer of torque from the input shaft (7) to the output shaft (8), at least a part of the speed translation from the drive shaft (26) to the door leaf shaft (6) is arranged within the transfer housing (2, 3).
3. A drive mechanism according to claim 2,
   characterised in that the gearing input shaft (7) and the gearing output shaft (8) each have a gear wheel (12, 13), that one or more intermediary shafts (9, 10, 11) are disposed between the gearing input shaft (7) and the gearing output shaft (8), which each have a pair of gear wheels of different diameter (14, 15/16, 17/18, 19), which are torsionally-fixed in relation to each other, and that viewed from the gearing input shaft (7), a gear wheel of smaller diameter (12, 15, 17, 19) is connected to a gear wheel of greater diameter (14, 16, 18, 13) of the next shaft in the geartrain (9, 10, 11, 8) via an endless chain or belt driving member which winds around one of these two gear wheels (12, 14/15, 16/17, 18/19, 13), wherein especially the axes of all shafts (7 to 11) are arranged to run in parallel and approximately in one plane.
4. A drive mechanism according to claim 1,
   characterised in that a gear wheel (27) arranged on the input shaft (7) is directly connected to a gear wheel (28) on the output shaft (8) via a gearing member in the fashion of an endless belt, especially an endless chain.
5. A drive mechanism according to one of claims 1 to 4, characterised in that the drive housing (25) can be fixable to the transmission housing (2, 3) at a variety of selectable angle settings (29, 30).
6. A drive mechanism according to claim 5,
   characterised in that the drive housing (25) has drilled holes (29) arranged at a distance along a circular arc which correspond with at least one appropriately-arranged drilled hole in the transmission housing (2, 3), depending on angle setting, and which are pierced by a common bolt.

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