EP1197627B1 - Drive for doors, especially garage doors - Google Patents

Abstract

Drive for doors, especially garage doors, comprises door rollers (18) arranged on each side of the moving part of the door and guided in fixed rails (16), and a drive unit (24) consisting of at least one motor (26) and one gear. Two opposite-rotating drive shafts on which rope rollers (28, 30) are arranged lead out of the drive unit. A rope (38) with two free ends (40, 42) is wound on each rope roller. To open or close the door the door rollers or the door edges interact with the ropes so that the rotation of the rope rollers is transferred to the door rollers or edges. Preferred Features: The drive unit is arranged on the door leaf of a swing door or on a segment, preferably the uppermost segment, of a sectional door, or is fixed e.g. to the garage roof.

Description

The invention relates to a drive for gates (as known, for example, from document US-A-4 248 016), in particular garage doors according to the preamble of claim 1.

Motorized doors are widely used. A common application is a motorized garage door. Such gates are often designed as sectional doors, which consist of several horizontally stacked lamellae, the respective lamellae are guided on right and left located door rollers in rails. The rails mounted vertically on the wall go over a curve in a horizontal position parallel to the building ceiling. From the closed to the open position of the door, the gate rollers pass through the vertical rails through the rail arch to the horizontal end position. The upper door rollers of the upper end plate are often guided in a separate rail, which is located directly above the horizontal rail. This rail does not go over an arc in the vertical area, but runs at best with a little inclination approximately straight until the fall. As a result, the upper lamella can be folded close to the side frame and the lintel. The drives for the aforementioned goals usually consist of a in a drive rail reciprocable carriage, which is coupled via a gate operator or a pull rod on the upper lamella of the sectional door. The drive consists of at least one motor and a transmission, via which in the drive rail the carriage reciprocable chain or the drive belt is driven.

In addition to the sectional door described above, other Torblattausgestaltungen, such as one-piece overhead doors on the reciprocating in the drive rail and carriages are opened or closed.

The aforementioned drives have the disadvantage that the drive rail in the middle of the building ceiling, such as the garage ceiling, must be arranged and that must be kept free for the movable along the drive rail gate operator in the building ceiling a corresponding space for movement.

The object of the invention is to provide a drive for gates, which on the one hand is simple and on the other hand can be arranged to save space.

According to the invention this object is achieved by means of a drive for gates according to the combination of the features of claim 1. Conceptually, the drive according to the invention is a cable drive. Here, two counter-rotating drive shafts are provided on a drive unit consisting of at least one engine and one transmission. On each pulley a rope is wound with two free ends. The cable ends are in operative connection with the door rollers arranged laterally at the gates for opening or closing the door such that the rotational movement of the pulleys is converted into a translation of the door rollers. The rope ends may be in operative connection with the gate edges instead of the gate rollers for opening or closing the gate in such a way that the rotational movement of the rope pulleys is transmitted to the gate edges. Thus, all versions below, the are carried out based on the door rollers, to transfer to variants in which attack the rope ends to the gate edges.

According to the invention, the drive unit can be arranged directly on the door leaf in the case of a swing gate leaf or on a lamella in the case of a sectional door consisting of lamellae. Alternatively, if this should make space requirements necessary, for example, the drive unit can be arranged in a stationary manner, for example on the garage ceiling. In this case, the ropes on corresponding deflection, such as pulleys, out, and connected to the door rollers such that they can be offset by driving the pulleys in a translational movement along the rails for opening or closing the door leaf.

According to an advantageous embodiment of the invention, the free ends of each rope can be fixed to fixed points in each case in longitudinal extension of the rails opposite sides, the cable ends between the pulley and fixed point are each guided over standing with the Torlaufrollen operatively connected cable deflections. The associated with the gate rollers rope deflections can be divisible and thus be mounted without disassembly of the door rollers.

The pulleys may advantageously have a longitudinal bore through which the cable is guided before the ends are wound on the pulleys. In the rotation of the pulleys thereby one end is shortened to the extent and wound on the pulley, in which the other end is extended, d. H. is unwound from the pulley.

To better guide the ropes can be provided on the pulleys advantageous rope grooves, wherein in the adjacent pulleys different pitch directions are realized.

Particularly advantageously, the transmission of the drive unit is realized by a worm gear, wherein a centrally arranged worm meshes with each fixed to the pulleys gears arranged. The motor-driven worm is arranged centrally between the two gears.

Further details and advantages of the invention will be explained in more detail with reference to a Ausführungsbeipieles shown in the drawing.

Fig. 1:

Eine teilweise geschnittene Darstellung des oberen Torbereiches mit einem Antrieb gemäß einer Ausführungsvariante der vorliegenden Erfindung,

Fig. 2:

ein vergrößertes Detail gemäß Figur 1, in welcher die Torlaufrolle im Schnitt vergrößert dargestellt ist,

Fig. 3:

eine Draufsicht von Hinten auf die mit der Torlaufrolle verbundene Umlenkeinrichtung,

Fig. 4a, b, c:

verschiedene Darstellungen, der Seilrolle, teilweise geschnitten, und die

Fig. 5a, b:

Ansichten der nebeneinander angeordneten Seilrollen zur Verdeutlichung der Seilkinematik.

Show it:

Fig. 1:

A partially sectioned view of the upper door area with a drive according to an embodiment of the present invention,

Fig. 2:

an enlarged detail of Figure 1, in which the gate roller is shown enlarged in section,

3:

a top view from the rear of the associated with the gate roller deflection,

Fig. 4a, b, c:

various representations, the pulley, partially cut, and the

Fig. 5a, b:

Views of the pulleys arranged side by side to illustrate the rope kinematics.

In the embodiment shown in the drawing, a drive for a garage door is exemplified. FIG. 1 shows the upper door region of a sectional door 10.

From the sectional door 10, the uppermost Sektionaltorlamelle 12 is shown, which is laterally bordered by fixed Torseitenzargen 14. In the garage ceiling substantially horizontally extending rails 16 are recessed in a conventional manner. Along these rails roll door rollers 18 during the opening and closing movement of the sectional door 10 from. The door rollers 18 are each rotatably mounted on a shaft which is rigidly connected via a bracket 22 with the uppermost slat of the sectional door. On the uppermost door leaf 12, the drive unit 24 is additionally fixed centrally. This consists of an electric motor 26 and a transmission shown only schematically in Figure 1. From the drive unit 24, two counter-rotating drive shafts are led out, are arranged on the respective pulleys 28 and 30 respectively.

The gear for driving these pulleys 28 and 30 consists essentially of a centrally located worm 32 which meshes diametrically laterally of her oppositely arranged gears 34 and 36 which are rigidly connected to the pulleys 28 and 30 respectively.

On the pulleys 28 and 30, a respective cable 38 is wound, each having two free ends 40 and 42. In the embodiment shown here, the outgoing of the pulley free ends 40 and 42 of the cable 38 are fixed to fixed fixed points 44 and 46 respectively. These fixed points are, as shown here in the figure 1, arranged on each side in longitudinal extension of the rails 16 opposite sides. The fixed point 44 is arranged in an imaginary extension of the running rail 16 in the region of the fixed gate frame 14, while the fixed point 46 is provided at the opposite end of the running rail 16 in the garage ceiling. At the fixed points 44 and 46 respectively clamping devices for clamping receiving the cable ends 40 and 42 are provided. By appropriate release of these clamping devices, the respective cable end 40 and 42 can be tensioned.

Between the fixed points 44 and 46 and the pulleys 28 and 30, the cable ends 40 and 42 are guided to the gate rollers 18 connected cable deflections 48. (See also Fig. 2 and Fig. 3). The cable guide 48 is mounted radially and axially movable on the Torlaufrollenaxe 20. The cable ends 40 and 42 are guided through corresponding recesses 50 and 52 (FIGS. 2 and 3). By rotational movement of the pulleys 28 and 30, the free ends 40 and 42 of the cable 38 are shortened or extended. As a result, the cable guide 48 and thus on the door guide 20 and the door roller 18 along the slide rail 16 is moved. Of course, with the gate roller on the connecting piece 22 and the upper gate plate 12 and with this the entire Sektionaltor 10 is opened or closed.

The cable guide 48 has a low-friction surface at the locations within the opening 50 and 52 at which the cable ends 40 and 42 are in contact with the cable guide. Here, if necessary interchangeable sliding elements or small rolling bearings can be provided. As far as it is necessary in the course of the cable ends, additional sliding or roller or roller bearings may be provided to redirect the rope and to avoid rubbing points that could damage it. In Figure 1, such a sliding element, on which the cable end 40 is guided past, designated 54.

The cable guide 48, as shown in particular in Figure 3, designed in two parts and can be shared for example by loosening a screw without having to dismantle the door rollers 18.

In the figure 4, the construction of a pulley 28 is shown. The side view is shown in FIG. 4 a, while in FIG. 4 c a partial region is shown in section and in FIG. 4 b a section along the section line A - A of FIG. 4 c is shown. Not shown is the drive shaft, which is led out of the drive unit and on which the pulley 28 is seated.

The pulley 28 has a longitudinal bore 58 laterally offset with respect to the center line 56 of the rotationally symmetrical pulley. On the surface of rope grooves 60 are provided for receiving the cable 38. The rope 38 is, as shown in Figures a to c, passed through the longitudinal bore 58 and wound along the right-hand running pitch of the cable grooves on the pulley 58, the free cable ends 40 and 42 away from the pulley to that in the figure 4 fixed points 44 and 46 (see Fig. 1) are not shown here. If the pulley, as shown by the arrow in Figure 4, rotated counterclockwise, the cable end 40 is unwound, while the cable end 42 is wound to the same extent on the pulley 28.

The rope kinematics will be explained again with reference to FIG. Here both adjacent pulleys 28 and 30 are shown. In the figure 5 a, the kinematic situation for the opening of the gate is shown. The pulley 28 has a left-hand slope of the rope grooves 60, while the pulley 30 has a right-hand slope of the rope grooves. In the door opening according to Figure 5 a, the pulley 28 is rotated clockwise and the pulley 30 counterclockwise. In this case, the rope end 40 is unwound in the pulley 28 and the cable end 42 wound up. In the same way, the rope end 40 is unwound in the pulley 30 and the cable end 42 wound up. Thus, both rollers 18, d. H. the left and right rollers 18 are driven in the same way. FIG. 5 b shows the closing of the gate. Here, the pulley 28 is now driven counterclockwise while the pulley 30 is rotated clockwise. Accordingly, the cable end 40 is wound up and the cable end 42 unwound.

Although the different pitch direction of the cable grooves 60, as shown here, is not absolutely necessary for the overall function, but it causes a symmetrical cable inlet and cable drain on both pulleys 28 and 30th The effective diameter of the two pulleys is identical in the embodiment shown here.

The number of arranged on the circumference of the pulleys 28 and 30 cable grooves 60 and the effective diameter of the pulleys determine the maximum travel, d. H. Stroke of the garage door drive.

The present invention is not limited to the rope kinematics described in this embodiment. Rather, for example, is also a variant within the scope of the invention, in which the cable ends 40 and 42 are not fixed, but are connected after appropriate deflection of the door rollers or their storage to move the door rollers according to the rails translational.

Claims (9)

1. Drive for doors, especially garage doors, with door rollers (18) which are arranged in each case laterally on the moveable part of the door and are guided in positionally fixed running rails (16), and with a drive unit (24) comprising at least a motor (26) and a gear, characterized in that two drive shafts rotating in an opposed manner are led out on the drive unit (24) and a cable pulley (28, 30) is arranged on each of them, in that a respective cable (38) with two free ends is wound up on each cable pulley, and in that, for opening or closing the door, the door rollers (18) or the door edges are operatively connected to the cables (38) in such a manner that the rotational movement of the cable pulleys (28, 30) is transmitted to the door rollers (18) or door edges.
2. Drive according to Claim 1, characterized in that the drive unit is arranged on the door leaf, in the case of a swinging door leaf, or on a slat, preferably the uppermost slat, in the case of a sectional door composed of slats.
3. Drive according to Claim 1, characterized in that the drive unit is arranged in a positionally fixed manner - for example on the garage ceiling.
4. Drive according to one of Claims 1 to 3, characterized in that the free ends of each cable are in each case secured at fixed points on opposite sides in the longitudinal extent of the running rails, the cable ends being guided in each case between cable roller and fixed point via cable-deflecting means operatively connected to the door rollers.
5. Drive according to one of Claims 1 to 3, characterized in that the cable ends, after being guided around corresponding deflecting pulleys, are connected to the door rollers in such a manner that the rotational movement of the cable pulleys is converted into a longitudinal movement of the door rollers along the running rails.
6. Drive according to one of Claims 1 to 5, characterized in that the cable pulleys have a longitudinal hole through which the cable is guided before the ends are wound up on the cable pulleys.
7. Drive according to one of Claims 1 to 6, characterized in that cable grooves having a different pitch direction, if appropriate, are arranged on the cable pulleys.
8. Drive according to one of Claims 1 to 7, characterized in that the cable-deflecting means which is connected to the door rollers can be divided and therefore can be fitted without removing the door rollers.
9. Drive according to one of Claims 1 to 8, characterized in that the drive unit contains a worm gear which also has a central worm which meshes with gear wheels connected in a rotationally fixed manner to the cable pulleys.

Images