EP1965010B1 - Drive device - Google Patents

Abstract

A lift/lower sliding e.g. garage door rises to a horizontal position under the ceiling, and swings down through rail guides to close and lock. The door moves under power with a slide (14) moving through a guide rail (5). The door panel is linked to the slide by e.g. a chain terminating in a lever (17) incorporating a guide for a sliding pin following the curved track. When the door closes, the lever engages with a fixed stay (18) and locks. On opening, the pin lifts from the stay and is released.

Description

The invention relates to a drive device according to the preamble of claim 1.

Such a drive device is known from DE 102 27 110 A1 known. This drive device forms a garage door drive. As part of the drive device, a guide rail is mounted on the ceiling of a garage, in which a chain is tensioned as a guide means. On the guide rail, a carriage with a drive in the form of an electric motor is movable, wherein the electric motor is in mesh with the chain via a gear. The carriage itself is connected via a rod as a connecting element hinged to a door leaf. The electric motor is controlled by an external control unit. Depending on the control of the electric motor, the carriage is moved in a predetermined direction on the guide rail via this, whereby the door leaf is raised or lowered and the door opening of the garage is opened or closed.

With such a drive device, the door leaf for closing and opening the door can be easily and quickly moved between an opening position in which the door leaf is retracted under the ceiling of the garage door, and a closed position in which the door leaf closes the door opening of the door.

However, the problem with such door systems is that the door leaf can be pushed manually in its closed position, that is, can be opened without authorization. With the manual sliding of the door leaf this becomes without being driven by the electric motor moves in the direction of the open position.

To prevent such unauthorized manual opening of the gate, mechanical locking devices are used for drive devices of the type mentioned. Such locking devices must generally be designed so that they block the movement of the carriage on the guide rail when the door leaf is to be lifted from the closed position by manual force actions. In contrast, the closing device must release the movement of the door leaf when the door leaf is to be moved out of its closed position by means of the carriage.

Such a closing device for a door drive device is from the EP 1 187 963 B1 known. The drive device described there has a movable in a guide rail driver, which is driven by a drive. For coupling the driver to the door leaf, a rod is provided. One end of the rod is hinged to the door leaf. At the other end of the rod, a lever element is arranged as part of the locking device, which has two pivotable about a first pivot axis lever arms, wherein the lever member is pivotally mounted on the driver at the first pivot axis. At the first lever arm, the rod is pivotally coupled about a second pivot axis. At the second lever arm is an engagement device. As soon as the door leaf has moved into its closed position via the method of the driver, the engagement device is brought into engagement with an abutment element as a further component of the locking device on the guide rail. In a manual force to raise the door leaf from the closed position via the rod is a force transmission to the lever element such that the engagement device remains in engagement with the abutment element. In contrast, in the method of the driver for extending the door leaf from the closed position, the lever element is actuated so that the engagement device released from the abutment element, so that the driver can be moved further to open the gate.

A disadvantage of this locking device whose constructive high effort, in particular the formation of the lever member with two lever arms and the pivoting of the lever member on the one hand about a first pivot axis and the joint coupling of the rod to the lever member about a second pivot axis is undesirable consuming. Particularly close, however, is that in order to ensure a faultless function of the locking device spring elements for biasing the lever element are necessary. Apart from the fact that in this way the number of parts of the locking device and thus their production costs are increased, such spring elements are generally subject to wear, whereby an undesirable susceptibility of the locking device is given.

From the DE 102 28 156 A1 a door drive is known in which a motor-driven carrier slide is connected via a connecting element in the form of a push rod with a gate. As a locking device, a pawl is provided which are part of the push rod and which can be brought into engagement with an abutment by the push rod is pushed with a slot guide against an abutment.

From the US 6,557,301 Another door drive is known in which a motor-driven driver is coupled via a push rod to a gate. As a locking device a pivotally mounted on the push rod pawl is provided, which can be moved against spring forces of spring elements and which can engage behind an abutment.

The invention has for its object to provide for a drive device of the type mentioned with the least possible effort secure protection against unauthorized manual opening of the door.

To solve this problem, the features of claim 1 are provided. Advantageous embodiments and expedient developments of the invention are described in the subclaims.

The invention relates to a drive device for a gate, the door opening is lockable with a door leaf. The drive device has a movable on a guide rail, driven by a drive carriage. The door leaf is connected via a connecting element with the carriage. The connecting element is hinged to the door leaf. One end of the connecting element forms a lever which has a lever arm, at the front end of which a detent nose is provided and which has a guide in which a guide element fixedly connected to the carriage is displaceably mounted along a trajectory determined by the contour of the guide. Upon retraction of the carriage in a closed position in which the door leaf closes the door opening, the lever is retracted into a locking position on a stationary abutment in which the detent engages behind the abutment. In addition, the guide element abuts against an edge segment of the guide as a stop, so that the door leaf is locked against an opening movement acting directly on it. In a method of the carriage from the closed position, the guide element is moved away from the stop in the guide whereby the lever is released from its locking position on the abutment. The connecting element and the lever consist of separate parts which are rigidly connected via fastening means. The relative position of the lever to the connecting element is adjustable.

The cooperating with the abutment lever of the drive device according to the invention forms a locking device, by means of which, with a constructively low effort efficient securing the door leaf is achieved in its closed position against unauthorized manual opening.

The operating principle of the locking device according to the invention is based on the fact that the lever is firmly connected on the one hand with the connecting element, on the other hand coupled by the guide to the guide member connected to the carriage so that according to the contour of the guide a positively trajectory of the lever to retract on the Abutment and to extend from the abutment is obtained.

According to the invention, the trajectory of the lever is formed solely by a suitable dimensioning of the guide so that it is fixed in position without retracting elements when retracting the carriage in the closed position on the abutment and is released automatically in reverse movement of the carriage of the lever from the abutment again.

Due to the positive guidance of the guide element in the guide also a security of the door leaf against unauthorized manual opening is guaranteed. This is due to the fact that in a manual opening of the door leaf, the corresponding forces transmitted along the connecting element to the lever and thus act in a different direction than in a method of Torblatts by means of the carriage, because there the forces act in the direction of the guide rail.

When acting in the direction of the connecting forces that occur with manual force acting on the door leaf, the guide member is pressed against an edge segment of the guide, that is, it does not move in the guide rail, so that the lever remains in latching engagement with the abutment, whereby the Door leaf is secured against unauthorized opening. This ensures a secure position of the lever on the abutment is achieved in a structurally simple manner.

The guide and the guide element are further dimensioned so that on the one hand a safe retraction and extension of the lever on the abutment is achieved by the relative movement of the guide element, on the other hand, a secure coupling of the connecting element is ensured on the carriage, so by the movement the carriage is given a controlled, defined movement of the door leaf. The guide is for this purpose designed so that in a method of the carriage on the guide rail in a predetermined direction, the guide element in each case bears tightly against an edge segment of the guide, whereby a direct direct power transmission of the carriage is given via the connecting element on the door leaf.

In an advantageous, structurally particularly simple embodiment of the invention, the guide element is formed by a bolt which is mounted at one end of the carriage. The guide then preferably consists of a slot in which the bolt is guided. The shape of the slot determines the trajectory of the bolt, wherein the width of the slot is adapted to the diameter of the bolt, so that the bolt can perform only a positively driven movement in the longitudinal direction of the slot. As a result, a defined trajectory of the lever when retracting and extending from the abutment is obtained in a simple manner.

It is essential here that the trajectory of the lever is obtained solely by the movement of the guide element in the guide, but not by a relative movement of the lever itself to the connecting element, since these components are rigidly connected to each other during operation of the drive device.

Particularly advantageously, the lever is fastened by means of fastening means on the connecting element. Then, before starting up the drive device by releasing the fastening means, the relative position of the lever can be adjusted to the connecting element and then fixed by operating the fastening means. By this adjustment, the trajectory of the lever can be easily adapted application specific to different embodiments of the drive device.

Figur 1a:

Schematische Darstellung eines Ausführungsbeispiels einer An- triebsvorrichtung für ein Tor.

Figur 1b:

Vergrößerte Darstellung eines Ausschnitts der Anordnung ge- mäß Figur 1a.

Figur 2:

Teildarstellung der Antriebsvorrichtung gemäß Figur 1 mit den Komponenten einer Sperrvorrichtung.

Figur 3:

Einzeldarstellung der Sperrvorrichtung gemäß Figur 2 in einer Sperrstellung eines Hebels.

Figur 4:

Anordnung gemäß Figur 3 bei aus der Sperrstellung gelöstem Hebel.

The invention will be explained below with reference to the drawings. Show it:

FIG. 1a

Schematic representation of an embodiment of a drive device for a goal.

FIG. 1b

Enlarged view of a section of the arrangement according to FIG. 1a ,

FIG. 2:

Partial view of the drive device according to FIG. 1 with the components of a locking device.

FIG. 3:

Individual representation of the locking device according to FIG. 2 in a locked position of a lever.

FIG. 4:

Arrangement according to FIG. 3 when released from the locked position lever.

FIG. 1a shows a first embodiment of a drive device 1 for a goal. The gate is formed in the present case by a garage door 2. FIG. 1a shows the door leaf 2 of the garage door in a longitudinal section in its closed position, in which this is located in a door opening 3 in a wall of the garage. In this closed position, the plane of the door leaf 2 lies in a vertical plane and closes the door opening 3.

The drive device 1 serves to actuate the garage door, wherein the door leaf 2 can be moved between a closed position and an open position. In the open position, the door leaf 2 is arranged below the ceiling 4 of the garage, so that the door opening is open.

As part of the drive device 1, a guide rail 5 is provided, which is mounted tightly below the ceiling 4 of the garage. The guide rail 5 is fixed with brackets 6, 7 on the ceiling 4 and a subsequent to the ceiling 4 and the door opening 3 at the top limiting fall 8 of the garage.

The guide rail 5 is formed in the shape of a C-shaped profile. In the guide rail 5 runs as a guide means a chain 9. In the longitudinal-side open ends of the guide rail 5, an insert body 10, 11 is inserted respectively. The insert bodies 10, 11 have guide means clamping devices 12, 13 with which the chain 9 is tensioned in the guide rail 5.

On the guide rail 5, a carriage 14 is movably mounted. The carriage 14 is connected via a rod 15 or generally a connecting element hingedly connected to the door leaf 2. In the carriage 14 is provided as a drive not shown separately electric motor. The electric motor is connected via a likewise not shown gear in engagement with the chain 9. About the Electric motor, the gear is driven, whereby the carriage 14 is moved in a predetermined direction on the guide rail 5. Characterized the door leaf 2 is opened or closed according to the direction of travel of the carriage 14.

The power supply of the electric motor via the guide rail 5 and the chain 9. The control of the electric motor via a control unit 16 which is connected via a socket to a power supply. The power is thus supplied from the control unit 16 via the guide rail 5 and the chain 9 in the electric motor.

The carriage 14 and thus also the door leaf 2 is in its closed position, the door leaf 2 is secured against unauthorized manual opening, that is lifting the door leaf 2 without the use of the drive in the carriage 14 by means of a locking device.

This locking device, which in FIG. 1b shown enlarged, comprises a lever 17 at the end remote from the door leaf 2 of the rod 15 which is brought in the closed position of the door leaf 2 with an abutment 18 on the guide rail 5 in engagement.

It shows FIG. 2 a partial view of the drive device according to FIG. 1a , wherein in a sectional view of the door leaf 2 facing part of the carriage 14 is shown on the underside of the guide rail 5. The Figures 3 and 4 show individual representations of the front end of the rod 15 provided lever 17, wherein in FIG. 3 the lever 17 in engagement with the abutment 18 and in FIG. 4 the lifted from the abutment 18 lever 17 is shown.

FIG. 2 shows a plan view of the lower edges 5a, b of the legs of the guide rail 5 forming the C-shaped profile. The generally bar-shaped abutment 18 consists in the present case of a metal plate, whose longitudinal ends are fixed to the lower edges 5a, b of the guide rail 5, so that the abutment 18 extends over the entire opening at the bottom of the guide rail 5 forming C-shaped profile. In this case, the longitudinal axis of the abutment 18 extends perpendicular to the guide rail. 5

The Figures 3 and 4 show the formation of the lever 17 and the coupling to the front end of the rod 15. The lever 17 has a solid base body 17a, at the top of a lever arm 17b opens. At the free front end of the lever arm 17b, a latching lug 17c is provided.

In the lower region of the base body, a slot 19 is provided, which is penetrated by a screw 20, by means of which the lever 17 is fixed to the rod 15. For this purpose, the screw 20 can pass through a hole in the rod 15, wherein on the projecting through the bore free end of the screw, a nut can be screwed. With the fastening means thus formed, the lever 17 is rigidly connected to the rod 15 during operation of the drive device 1. Before putting into operation, the fastening means can be released in order to set the relative position of lever 17 and rod 15 in an application-specific manner.

In the main body of the lever 17, a further elongated hole 21 is provided as a guide for a guide element. The longitudinal body passing through the elongated hole 21 has a longitudinal axis extending along a straight line to generally elongated holes 21 extending along curved paths are possible. The width of the slot 21 is adapted to the width of the guide element, which is formed by a pin 22 having a circular cross-section.

The bolt 22 serves to couple the lever 17 and thus also the rod 15 to the carriage 14. As out FIG. 1 and especially FIG. 2 it can be seen, the bolt 22 is mounted in fork arms 14a, b of the carriage 14. The fork arms 14 a, b open at the door leaf 2 facing the front of the Carriage 14 and are integrally formed with this. The fork arms 14a, b are parallel and spaced apart. The bolt 22 passes through a respective bore in the fork arms 14a, b and is fixed thereto.

By the bearing of the bolt 22 in the fork arms 14 a, b of the carriage 14 and the guide of the bolt 22 in the slot 21 of the lever 17, a hinge connection between the unit of lever 17 and rod 15 and the carriage 14 is provided. Thus, when moving the carriage 14 on the guide rail 5, the inclination angle of the rod 15 can be adapted to the current carriage and door leaf position.

By the leadership of the bolt 22 in the slot 21, the lever 17 can be moved along a trajectory. During movement of the carriage 14 on the guide rail 5 in the direction of the closing position or the opening position, no such movement of the lever 17 takes place, since the bolt 22 bears tightly against an edge segment of the elongated hole 21 due to the pushing or pulling forces exerted by the carriage 14.

However, if the carriage 14 is retracted into the closed position, then the latching lug 17c of the lever 17 is pushed over the abutment 18 due to the obliquely extending front face of the latching lug 17c, so that the latching lug 17c, as in FIG FIG. 3 shown the abutment 18 engages behind. In this blocking position of the lever 17 on the abutment 18 is, as continue from FIG. 3 seen, the bolt 22 at the upper end of the slot 21st

In this blocking position of the lever 17 on the abutment 18 this secures the door leaf 2 against unauthorized manual opening. If a person wants to manually open the door manually by lifting the door leaf 2, then the in FIG. 3 shown, acting in the longitudinal direction of the rod 15 force F _first The slot 21 is dimensioned in terms of its size and orientation so that the force F ₁ extends substantially transverse to the longitudinal direction of the slot 21. As a result, the force F ₁ merely causes the latching lug 17 c of the Levers 17 presses against the abutment 18. The lever 17 thus does not move, there is no relative movement of the pin 22 to the slot 21 instead. But so that the position fixation of the lever 17 is retained on the abutment 18 and the gate can not be opened thus.

However, if the carriage 14 is moved out of its closed position, the blocking effect of the locking device is thereby automatically canceled. When starting the carriage 14 acts, as in the Figures 3 and 4 represented, on the bolt 22, the tensile force F ₂ in the horizontal direction. Due to this tensile force results in a relative movement of the bolt 22 relative to the slot 21 downward, that is, the lever 17 is pushed upwards, since the altitude of the bolt 22 is fixed to the carriage 14. As a result, the locking lug 17c lifts off from the abutment 18, as also from FIG. 4 seen. By the superimposed translational movement of the carriage 14 and thus of the bolt 22 in the direction of the tensile force F ₂ , the lever arm 17b is thus lifted off the abutment 18 and the blocking effect of the locking device is released, so that the carriage 14 can be moved unhindered in the direction of the opening position to the Open gate.

LIST OF REFERENCE NUMBERS

(1)

driving device

(2)

door leaf

(3)

door opening

(4)

blanket

(5)

guide rail

(5a, b)

margins

(6)

bracket

(7)

bracket

(8th)

fall

(9)

Chain

(10)

insert body

(11)

insert body

(12)

Guide means tensioner

(13)

Guide means tensioner

(14)

carriage

(14a, b)

fork arm

(15)

pole

(16)

control unit

(17)

lever

(17a)

body

(17b)

lever arm

(17c)

locking lug

(18)

abutment

(19)

Long hole

(20)

screw

(21)

Long hole

(22)

bolt

Claims (12)

1. Drive device (1) for a door, the door opening of which is closable by a door leaf (2), with a carriage (14) which is movable at a guide rail (5) and driven by means of a drive, wherein the door leaf (2) is connected with the carriage (14) by way of a connecting element and in that case the connecting element is pivotably connected with the door leaf (2), wherein one end of the connecting element forms a lever (17) which has a lever arm (17b) - at the front end of which a detent lug (17c) is provided - and which has a guide in which a guide element fixedly connected with the carriage (14) is mounted to be displaceable along a track curve determined by the profile of the guide, wherein on movement of the carriage (14) into a closing position in which the door leaf (2) closes the door the lever (17) is moved into a blocking setting at a stationary counter-bearing (18) in which the detent lug (17c) engages behind the counter-bearing (18) and the guide element bears against an edge segment of the guide as an abutment so that the door leaf (2) is blocked against an opening movement acting directly thereon, but in the case of a movement of the carriage (14) out of the closing position the guide element is moved in the guide away from the abutment, whereby the lever (17) is released from its blocked setting at the counter-bearing (18), wherein through the dimensioning of the guide alone the track curve of the lever (17) is so formed that this is positionally fixed in the closing position at the counter-bearing (18) without further setting elements when the carriage (14) is moved in and correspondingly in the case of reverse movement of the carriage (14) the lever (17) is automatically released again from the counter-bearing (18), characterised in that the connecting element and the lever (17) consist of separate parts which are rigidly connectible by way of fastening means and that the relative position of the lever (17) with respect to the connecting element is settable.
2. Drive device (1) according to claim 1, characterised in that the guide element is formed by a pin (22) and that the guide is formed by a slot (21).
3. Drive device (1) according to claim 2, characterised in that the width of the slot (21) is matched to the diameter of the pin.
4. Drive device (1) according to one of claims 2 and 3, characterised in that the slot (21) has a longitudinal axis extending along a straight line.
5. Drive device (1) according to claim 4, characterised in that at least in the closing position of the carriage (14) the longitudinal axis of the slot (21) runs at an angle of inclination with respect to the longitudinal direction of the guide rail (5).
6. Drive device (1) according to any one of claims 2 to 5, characterised in that the pin (22) is mounted in forked arms (14a, b) of the carriage (14).
7. Drive device (1) according to any one of claims 1 to 6, characterised in that the track curve of the lever (17) when moving into the blocking setting at the counter-bearing (18) is presettable by the setting of the relative position.
8. Drive device (1) according to any one of claims 1 to 7, characterised in that the connecting element is a rod (15).
9. Drive device (1) according to claim 8, characterised in that the lever (17) is connected with the front end, which faces the carriage (14), of the rod (15).
10. Drive device (1) according to any one of claims 1 to 9, characterised in that the counter-bearing (18) is fastened to the guide rail (5).
11. Drive device (1) according to claim 10, characterised in that the counter-bearing (18) is of beam-shaped construction.
12. Drive device (1) according to one of claims 10 and 11, characterised in that the guide rail (5) is constructed in the form of a C-shaped section, wherein the counter-bearing (18) extends between the free limbs of the C-shaped section.

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