WO1994000665A1

WO1994000665A1 - Motorised drive device for a door leaf

Info

Publication number: WO1994000665A1
Application number: PCT/DE1993/000560
Authority: WO
Inventors: Michael Hörmann
Original assignee: Marantec Antriebs- Und Steuerungstechnik Gmbh & Co. Produktions Kg
Priority date: 1992-06-26
Filing date: 1993-06-28
Publication date: 1994-01-06
Also published as: DE59308961D1; ES2119901T3; JPH07508571A; DE4221000C2; DE4221000A1; ATE170592T1; DK0649492T3; EP0649492B1; EP0649492A1

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

MOTOR DRIVE DEVICE FOR A DOOR LEAF

The invention relates to a motor drive device for a door leaf, in particular a door leaf which can be moved overhead, such as a roller door curtain, sectional door leaf or the like, which has a door leaf shaft connected to the door leaf and to which the output shaft of a drive motor unit accommodated in a drive housing is connected Intermediate connection of a torque transmission device accommodated in a transmission housing is connected, which has an input shaft connected to the output shaft of the drive motor unit and an output shaft connected to the door leaf shaft, the input shaft and the output shaft being at a distance perpendicular to the longitudinal axes of these shafts, which distance is a multiple of the sum of the radiuses of the gear wheels which are arranged on these shafts and are geared together.

Such a drive device is known from DE-OS 3915637 in such a way that the transmission device arranged between a drive unit and the door leaf shaft contains the transmission ratio required between the drive shaft of the motor unit and the door leaf shaft, it being assumed that the drive shaft is the drive motor is assigned directly, that is, without an intermediate gear. According to the exemplary embodiment, a corresponding emergency signal - for example an interruption of the power supply drove to the drive motor - be derivable and a damped start possible.

The invention has for its object to provide a drive device of the type mentioned, 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 is held stationary and is connected in a rotationally fixed manner to the transmission housing of the torque transmission device in such a way that torques between the door leaf shaft and the output shaft are absorbed in the manner of a rigid lever.

According to the invention, the non-rotatable connection between the transmission housing and the drive housing transmits a reaction torque to the drive unit, which is effective via the relatively long lever arm of the transmission housing between the drive unit and the door leaf shaft, so that the long drive arm Reactive force acting as a lever arm, which must be absorbed by the stationary mounting of the drive housing, is relatively small.

At the same time, the spacing of the drive unit from the door leaf shaft, which is due to the lever arm length, results in a large number of spatially different fixing options for the drive unit, so that there are correspondingly large options in the most favorable positioning. Against this background, in a particularly preferred embodiment of the invention, fixing between the drive housing and transmission housing in different angular positions is made possible, in particular through a number of openings arranged on a circular arc around the output shaft of the drive unit in a corresponding wall of the drive housing. which correspond to an opening in the adjacent housing wall of the transmission housing in such a way that, in the number of openings in the drive housing, different pivoting positions between the housings make it possible to carry out a bolt connecting the housing.

In the known device, the transmission housing accommodates the translation device, in such a way that this housing can be kept narrow and accordingly requires little space on the side of the door leaf. The present invention can also work with such a design of the transmission housing, but the focus is on the idea of the long lever arm, which is why the required transmission gear can also be assigned to the drive motor unit, that is to say arranged between the drive motor and its output shaft, and the transmission housing only has a single-stage gear train, possibly particularly space-saving with the ratio 1: 1. Then you get an even narrower and flatter design of the transmission housing, which improves the arrangement options and space requirements and the transmission housing fulfills the purpose of the long lever arm only.

These and further 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 is a schematic diagram of the arrangement of a

Transmission housing pivotable around the door leaf shaft, to the input end of which is remote from the door leaf shaft, a drive unit is connected, in a schematic side view; Figure 2 is a schematic view in the axial direction of the

Output shaft of the drive unit;

FIGS. 3 and 4 show a sectional view perpendicular to the shaft axis direction through an exemplary 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 the figures

3 and 4 of an embodiment of the transmission direction with only a single-stage gear design;

Figure 7 a) to d) sketchy different arrangement possibilities for the drive device at different angular positions between the transmission housing and the drive housing as examples.

1 and 2 show the longitudinal axis of a door leaf shaft, as indicated by dash-dotted lines, as it corresponds to known constructions as a weight balancing shaft in sectional doors, winding roller shaft of a roller door or the like. On this door leaf shaft 6, the drive device designated as a whole works, which comprises a two-shell transmission housing 2, 3 with a parting line 4 and a drive assembly generally designated 5. The drive unit is accommodated in a drive housing 25, the output shaft 26 of the unit is connected coaxially to the input shaft 7 or 27 of the transmission device, from which the gear connection with the output shaft 8 of the one or more stages of the gear unit Transmission device is made, which in turn is coaxially connected to the door leaf shaft 6. Execution of the gear connection within the transmission housing result 3 and 4 on the one hand and FIGS. 4 and 5 on the other hand.

As can be seen from FIG. 1, the drive housing 25 is held stationary in some way, for example via a bearing on the side wall of the space assigned to the door opening to be closed, on the running rail holding structure or the like, as can be seen in FIGS. 7a to 7d. In order to make these different determinations possible, the wall of the drive housing adjacent to the transmission housing is provided with a row of openings 29 arranged centrally around the longitudinal axis of the output shaft 26, while the wall of the transmission housing 2, 3 opposite this row of openings is a correct one Has responding opening, which, depending on the selected angular position between the housings, is aligned with an opening 29, which two openings in this selected arrangement are penetrated by a bolt 30, so that the two housings 2, 3 and 25 via the shafts 26 and 7 and these bolts 30 are fixed to one another in a rotationally fixed manner. The transmission housing 2, 3 thus acts as a long lever arm with regard to the reaction forces during torque transmission, so that the forces exerted on the holder of the drive housing are low. For example, in the case of a gate about four meters high, the transmission housing can easily be made three meters long, so that the holding forces to be used for the stationary mounting of the drive housing 25 are extremely small.

According to FIGS. 3 and 4, the transmission housing can accommodate one or most of the transmission gear. The drive device, denoted overall by 1, has a transmission housing which consists of two at least approximately identical half-shells 2 and 3 and is held together by means of screws which are not specified in any more detail. The two half-shells 2 and 3 lie against each other in the area of a parting line 4, which extends approximately through the center of the housing interior. space and perpendicular to the axial direction of the rotatable gear parts accommodated in the housing.

A transmission input shaft 7 is indicated in the pictorial representation of the exemplary embodiment of the exemplary embodiment, and a transmission output shaft 6 is indicated in the pictorial upper region. The transmission output shaft 6 is connected to the winding shaft or torsion spring shaft of a door leaf or is - as can be seen in FIG. 2 - a part of this shaft which projects into the interior of the housing and is connected in a rotationally fixed manner to the actual transmission output shaft 8 within the housing stands. The transmission output shaft 7 is connected in a manner not shown to the output shaft of the merely indicated drive motor unit 5 or a part of it.

Three intermediate shafts 9, 10 and 11 are arranged one above the other between the transmission input shaft 7 and the transmission output shaft 8. On the hub of the transmission input shaft 7, a first sprocket 12 of smaller diameter is arranged or designed to be non-rotatable, which is located in the vicinity of the shell broad side 29 of the housing part 2 facing the motor-side connection. A sprocket of larger diameter 13 is arranged or formed on the transmission output shaft 8 in a manner fixed against relative rotation, which lies near the shell broad side of the other housing part 3. The intermediate shafts 9 to 11 each carry pairs of chain wheels 14, 15/16, 17/18, 19 one of which is such a smaller diameter 15, 17, 19 and the other of which is such a larger diameter 14, 16-, 18. The sprocket pairs 14, 15 and 16, 17 and 18, 19 are each arranged or formed coaxially on a hub 20 common to both wheels. The arrangement is such that the larger sprocket 14 of the first intermediate shaft 9 adjacent to the input shaft 7 is aligned with the sprocket 12 of the shaft 7 or lies in one and the same revolving plane. The chain wheel 15 of smaller diameter of the first intermediate shaft is axially offset from the larger wheel 14 by a small distance. Net and runs in a plane with the sprocket 16 of larger diameter of the intermediate shaft 10 following next upwards in the direction of the output shaft 8. This coaxial to the sprocket 16 and again at the same distance as that between the sprockets 14 and 15 Forming a pair of associated sprockets

17 smaller diameters run in one plane with the sprocket

18 of the last intermediate shaft 1 1 following in the direction of the shaft 8. The sprocket 19 of the smaller diameter assigned to the sprocket 18 of larger diameter - again with the same axial distance to form a twist-proof pair on the common hub 20, runs in one plane with the sprocket 13 larger diameter of the transmission output shaft 8. The axes of all shafts 7 to 11 lie in one plane. Seen from the transmission input shaft 7 in the direction of the output shaft 8, a transmission wheel of smaller diameter and a transmission wheel of large diameter adjacent in the same plane are always connected to one another via an endless chain 21. This results in the following pairs of sprockets working in the output direction via chains with one another in the sense of a gradual force transmission: 12, 14; 15, 16; 17, 18 and 19, 13.

Due to the same distances between the respective pairs of sprockets per intermediate shaft and the alignment of the sprockets connected by roller chains 21 in each case, an arrangement is obtained in which all sprockets and endless chains run in two planes which are spaced relatively apart from one another. As can be seen in FIG. 2, the transmission is particularly narrow in the shaft axis direction, so that the space required on the corresponding side of the door leaf is correspondingly small.

In the preferred embodiment shown, the housing parts 2 and 3 serve at the same time to support the shafts, partly through bearing designs in the opposite shell broad sides 29 and 30 of the housing parts 2 and 3, but partly through other to be directed pins which are formed on the inside of the shell broad sides 29 and 30 and engage in the hubs 20 of the intermediate shafts 9 to 1 1. While the input shaft 7 in two housing openings

22 engages, the transmission output shaft 8 is on one side on a pin

23 of 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 engages in a corresponding recess in the transmission output shaft 8. Overall, the housing 2, 3 and thus the entire transmission is pivotally mounted about the axis of the shaft 6. The drive motor unit 5 is carried by the transmission input shaft 7 and is thus connected to the housing 2, 3.

At 30, the connection between the transmission housing 2, 3 and the drive housing 25 is shown, so that the latter engages the lever-like housing 2, 3 in a rotationally fixed manner. Only small forces have to be taken into account for the fixed fixing of the drive housing.

FIGS. 5 and 6 show a transmission housing 2, 3 that only a single-stage transmission consisting of the first sprocket 27 arranged on the input shaft 7, the second sprocket 28 arranged on the output shaft 8 and one spanning the sprockets Endless chain 21 is accommodated in the transmission housing. The transmission ratio can be selected 1: 1, ie both sprockets 27 and 28 are to be dimensioned in the direction of the smallest looping distance or the mobility of the connecting roller chain, so that a particularly narrow and flat design of the arm-shaped transmission housing 2, 3 reached. In addition, this transmission device can be designed correspondingly easily, while the drive unit, including a transmission gear, is correspondingly heavier. Otherwise, the bolt 30 connecting the housings 2, 3 and 25 in turn causes the slight effect of the transmitted torque on the holder of the drive housing.

FIG. 7 shows four examples of an arrangement of the drive device 1 or the choice of the fixed mounting of the drive housing 25 using the example of the guide rails of a sectional ceiling door. From the sketch a) it can be seen that the drive housing 25 is fixed on a cross strut between the horizontal and the vertical running rail, in b) the mounting of the drive housing 25 is only made on the vertical running rail, in c) only on the horizontal running rail and at d) in a manner not shown in detail on the side wall of a garage to be closed by the indicated sectional door.

Claims

Expectations

1. Motor drive device for a door leaf, in particular a door leaf that can be moved overhead, such as a roller door curtain, sectional door leaf or the like, which has a door leaf shaft (6) which is connected to the door leaf and to which the output shaft (26) of a drive motor unit accommodated in a drive housing (25) (5) with the interposition of a torque transmission device accommodated in a transmission housing (2, 3), which has an input shaft (7) connected to the output shaft (26) of the drive motor unit (5) and an output shaft (8) connected to the door leaf shaft (6) The input shaft (7) and the output shaft (8), viewed perpendicularly to the longitudinal axes of these shafts, have a distance which is a multiple of the sum of the radius of the gear wheels (12, 13; 27, 28) arranged on these shafts and connected to one another by gears ) is d ad u rc h ge k n nze ic h net that the drive housing (25) of the Drive motor unit (5) held stationary and with the transmission housing (2, 3)

Torque transmission device is rotatably connected (29, 30) such that torques between the door leaf shaft (6) and the output shaft (26) are absorbed in the manner of a rigid lever.

2. Drive device according to claim 1, dad u rc h ge ke n nze ic h net that in the course of torque transmission from the input shaft (7) on the output shaft (8) at least part of the speed ratio from the output shaft (26) to the door leaf shaft (6) is arranged within the transmission housing (2, 3).

3. Drive device according to claim 2, dad u rch ge ken nze ic h net that the transmission input shaft (7) and the transmission output shaft (8) each have a gear wheel (12, 13) that between the transmission input shaft (7) and the transmission output shaft ( 8) one or more intermediate shafts (9, 10, 11) are arranged, each having a twist-proof pair of gear wheels (14, 15/16, 17/18, 19) of different diameters, and that from the transmission input shaft (7) seen a gear wheel of smaller diameter (12, 15, 17, 19) with a gear wheel of larger diameter (14, 16, 18, 13) of the shaft (9, 10, 11, 8) next in the gear train via one of these two gear wheels (12 , 14/15, 16/17, 18/19, 13) looping endless chain or belt-shaped drive link (21), in particular the axes of all shafts (7 to 11) being arranged approximately in one plane and running parallel.

4. Drive device according to claim 1, dad u rc hge ke n nzeic h net that a gear wheel (27) arranged on the input shaft (7) with a gear wheel (28) arranged on the output shaft (8) via a gear member in the manner of an endless belt , in particular an endless chain, is directly connected.

5. Drive device according to one of claims 1 to 4, d ad u rc h ge ke n nze ic h net that the drive housing (25) on the transmission housing (2, 3) in different, selectable angular positions can be fixed (29, 30) .

6. Drive device according to claim 5, d ad u rc h ge ken nzeic h net that the drive housing (25) on a circular arc spaced holes (29), each with at least one correspondingly arranged hole in the transmission housing (2, 3) correspond to angular position and from a common one

Bolts are penetrated.