EP3601709B1 - Torque transmission device, door drive and door fitted with said device - Google Patents

Description

The invention relates to a torque transmission device for a gate drive device of a gate, a gate drive device and a gate provided therewith.

Gate drive devices are manufactured in different designs to be able to drive different gate models. Gates usually have a door leaf that, for example, closes an opening in a building. With a roller door, the door leaf is wound up on a door shaft to form a winding ball. With a sectional door, on the other hand, a traction device is usually wound up, which in turn drives the panels of the sectional door. The gate drive device can, for example, be connected directly to the gate shaft. However, depending on the installation situation, it may be difficult to connect the gate drive device directly to the gate shaft, so an additional gearbox may be required. One type of transmission is the chain drive, which not only enables a number of installation variants of the gate drive device, but also allows the torque transmission from the gate drive device to the gate shaft to be adjusted. However, when torque is transmitted by means of a chain or, more generally, by means of a traction device, torque fluctuations - be they generated by the door drive device itself or a result of the movement of the door leaf - can cause the traction device to vibrate. The traction device is therefore exposed to a higher dynamic load and wears out more quickly. If the traction device comes into contact with other components, they may also be damaged, increasing maintenance costs.

DE 31 46 136 A1 discloses a drive device for a rolling grille having a chain.

EP 1 225 296 A1 discloses a torque transmission device having the features of the preamble of claim 1.

From the US 6,117,034 A discloses a chain tensioner for a chain-operated torque transmission mechanism having two opposing sprockets connected by elastic bands such that the distance between the sprockets can vary during operation of the transmission mechanism.

The DE 10 2006 059 224 A1 discloses various embodiments of prestressed operative connections between the drive shaft and output shaft of a gearbox for a swing gate drive.

From the CA 1 201 136 A a tensioning mechanism for a garage door drive with a carriage movable on a chain is known, the tensioning mechanism being designed in such a way that if the load strand is over-tensioned, the drive is reversed.

The invention is based on the object of creating an improved torque transmission device which is designed to be more favorable, particularly in terms of wear and maintenance costs.

To solve the problem, the subject matter of independent claim 1 is proposed. Preferred embodiments are the subject of the dependent claims.

1. a) das als ein Lasttrum wirkende Trum des Zugmittels durch die Wirkung des Drehmoments weg von der Stützeinrichtung bewegt wird und das als ein Leertrum wirkende Trum des Zugmittels mittels der Bewegung des Lasttrums in Richtung auf die Seite des Lasttrums quer zu der Hauptbewegungsrichtung des Zugmittels relativ zu dem Abschnitt der Seitenwand bewegt wird, sodass das Leertrum an einem Berühren des Abschnitts der Seitenwand gehindert wird, und
2. b) das Leertrum führende Zugmittel-Führungsmittel ein Leertrum-Führungsmittel ist, das Lasttrum führende Zugmittel-Führungsmittel ein Lasttrum-Führungsmittel ist, und wobei wenigstens ein Abschnitt des Leertrum-Führungsmittels die Stützeinrichtung erfasst, um eine weitere Bewegung des Leertrum-Führungsmittels in Richtung auf die Seite des Lasttrums zu verhindern, während das Lasttrum-Führungsmittel von der Stützeinrichtung beabstandet ist, wobei eine zu der Seite des Leertrums wirkende Rückstellkraft durch das Verbindungselement auf das Lasttrum-Führungsmittel erzeugt wird, sobald das Lasttrum aus einer Gleichgewichtslage ausgelenkt wird.

The invention creates a torque transmission device for a gate drive device of a gate, comprising a torque transmission device which is designed to transmit torque and a drive member which can be connected to a drive device, an output member which can be connected to a component of the gate, a traction means which effectively connects the drive member to the output member and has a first Trum and a second strand and a traction means guide device, wherein the traction means guide device first traction means guide means and a second traction means guide means, wherein the first and second traction means guide means are movable transversely to a main direction of movement of the traction means, wherein the first and second traction means guide means are connected by means of an elastic connecting element. The torque transmission device further comprises a support device, which is designed to support the traction means guide device, and a housing device, which is designed to house the torque transmission device and has a side wall, at least a portion of which forms an inner peripheral surface, wherein the first and the second traction means -Guide means are connected in such a way that when transmitting torque

1. a) the strand of the traction device acting as a load strand is moved away from the support device by the effect of the torque and the strand of the traction mechanism acting as a slack strand is moved by means of the movement of the load strand towards the side of the load strand transversely to the main direction of movement of the traction mechanism the side wall portion is moved so that the slack strand is prevented from touching the side wall portion, and
2. b) the traction means guiding means guiding the slack strand is a slack strand guiding means, the traction means guiding means guiding the load strand is a load strand guiding means, and wherein at least a portion of the slack strand guiding means grasps the support device in order to enable further movement of the slack strand guiding means in the direction of to prevent the side of the load strand while the load strand guide means is spaced from the support device, a restoring force acting towards the side of the slack strand being generated by the connecting element on the load strand guide means as soon as the load strand is deflected from an equilibrium position.

If no torque is transmitted, the traction device is in its idle state. As soon as torque is transmitted, the traction device moves along its circumferential direction. This is also referred to below as the main direction of movement. If the load strand is tensioned by the power transmission, the traction device guide device then moves the slack strand towards the side of the load strand. This allows the free strand to move in the opposite direction be prevented, so that the possibility of a periodic oscillation occurring is made more difficult. Furthermore, this can reduce the likelihood of the slack strand bulging and touching other components. Therefore, the wear of the traction device and any other components located nearby is reduced and the maintenance effort can be reduced. The support device can be used to prevent the traction device guide device from moving too far. The movement of the traction device is therefore easier to control.

The traction means guide device has a traction means guide means which is designed such that when torque is transmitted, a movement of the traction means is enabled in its main direction of movement and that movement of the traction means is restricted essentially transversely to its main direction of movement. The force applied to the traction means is therefore essentially orthogonal to the main movement and can therefore occur with less effort than from other directions.

The traction means guide device is designed in such a way that when torque is transmitted, a restoring force acting in the direction of the side of the slack strand is generated on the load strand guide means. The traction means guide device has an elastic element for generating the restoring force. With a suitable restoring force, undesirable transverse movement of the load strand can be better suppressed. Furthermore, an oscillating system can be created in such a way that torque fluctuations cause the load strand to oscillate less or vibrations can even be completely suppressed.

It is preferred that the traction means guide device is provided between the drive member and the driven member, in particular in the middle third or in the middle between them.

It is preferred that the load strand guide means and the slack strand guide means are spaced apart from one another in the transverse direction to the main direction of movement are. If the direction of movement of the traction device changes, the load strand becomes the slack strand and vice versa. In this embodiment, the effect is therefore independent of the direction of movement of the traction means.

When transmitting torque, the slack side guide means is movable in such a way that the slack side guide means grasps the support device. The slack strand guide means rests on the support device when torque is transmitted. A too wide movement of the slack strand guide means can thus be prevented. Therefore, the movement of the slack strand is easier to control.

It is preferred that the slack strand guide means detects the support device when transmitting torque in such a way that the load strand guide means is movable against a restoring force in the direction away from the slack strand guide means, in particular substantially transversely to the main direction of movement of the traction means. The slack strand guiding means serves as a fixed point of the transverse movement and the load strand guiding means can move relative to the slack strand guiding means. The restoring force forces the load strand guide means and thus the load strand back into its starting position. Oscillations of the load strand due to torque fluctuations can thus be reduced.

The connecting element comprises an elastic element to generate the restoring force. This makes a more compact design possible because additional elements can be dispensed with.

The torque transmission device comprises a housing device which is designed to house the torque transmission device.

The housing device has a side wall section which forms an inner peripheral surface, wherein the traction means guide device is designed such that when torque is transmitted, the slack side is moved relative to the side wall section by means of the load side in such a way that the side wall section is prevented from touching the side wall section . The coordination of housing and traction device guide device reduces wear on the housing device and traction device.

The invention further provides a gate drive device for driving a gate shaft of a gate, comprising a drive device for generating torque, a preferred torque transmission device, the drive device being connected to the drive member to transmit torque to the output member.

The invention further provides a gate with a gate shaft, a door leaf driven by the gate shaft and a preferred torque transmission device which is connected to the gate shaft to drive the door leaf and/or a preferred gate drive device which is connected to the gate shaft to drive the door leaf.

• Fig. 1 ein Ausführungsbeispiel eines Tores;
• Fig. 2 eine Detailansicht der Drehmomentübertragungsvorrichtung aus Fig. 1 mit Gehäuse;
• Fig. 3 eine Detailansicht der Drehmomentübertragungsvorrichtung aus Fig. 1 ohne Drehmoment;
• Fig. 4 eine Detailansicht der Drehmomentübertragungsvorrichtung aus Fig. 1 mit Drehmoment und Hauptbewegungsrichtung entgegen dem Uhrzeigersinn; und
• Fig. 5 eine Detailansicht der Drehmomentübertragungsvorrichtung aus Fig. 1 mit Drehmoment und Hauptbewegungsrichtung im Uhrzeigersinn.

Exemplary embodiments of the invention are described in more detail below using schematic drawings. It shows:

• Fig. 1 an embodiment of a gate;
• Fig. 2 a detailed view of the torque transmission device Fig. 1 with housing;
• Fig. 3 a detailed view of the torque transmission device Fig. 1 without torque;
• Fig. 4 a detailed view of the torque transmission device Fig. 1 with torque and main direction of movement counterclockwise; and
• Fig. 5 a detailed view of the torque transmission device Fig. 1 with torque and main direction of movement clockwise.

It will follow up Fig. 1 Reference is made, which shows an embodiment of a gate 10. The gate 10 is, for example, a roller gate 11. However, other designs are conceivable. The gate 10 has a gate shaft 12 to which a multi-part gate leaf 14 is connected. The gate 10 further comprises a plurality of guide rails 16, in which the gate leaf 14 is guided for movement between the open position and the closed position. The door leaf 14 is wound on the door shaft 12 to open the door 10 and thereby forms a winding ball 18.

A gate drive device 20 is connected to the gate shaft 12 to automatically drive the gate leaf 14. The gate drive device 20 includes a drive device 22 for generating a driving force or a driving torque. The drive device 22 includes, for example, a geared motor 24, which provides the drive torque.

The drive torque is transmitted from the drive device 22 to the gate shaft 12 by means of a torque transmission device 26.

It will be discussed below Fig. 2 to 5 Referenced, which represents a detailed view of the torque transmission device 26.

The torque transmission device 26 includes a torque transmission device 27 for transmitting torque. The torque transmission device 27 comprises a drive member 28, which can be connected to the drive device 22, and an output member 30, which can be connected to the gate shaft 12. The drive member 28 and the driven member 30 are connected by a traction means 32 such that torque can be transmitted from the drive member 28 to the driven member 30. In this example, the drive member 28 is designed as a chain drive wheel 34 and the output member 30 is designed as a chain driven wheel 36. A drive chain 38 is used as traction means 32 in this example. It should be noted that in principle other traction devices, such as drive belts, toothed belts, V-belts and the like, can also be used.

The torque transmission device 27 further comprises a traction means guide device 40 for guiding the traction means 32. The traction means guide device 40 is arranged between the drive member 28 and the driven member 30. In particular, the traction means guide device 40 is arranged in the middle third or centrally between the drive member 28 and the driven member 30.

In addition, the torque transmission device 26 includes a support device 42 for supporting the traction means guide device 40. The support device 42 is also arranged between the drive member 28 and the driven member 30 and also within the area that is surrounded by the traction means 32. The support device 42 is in the present case designed as a support element 44 which extends between the drive member 28 and the driven member 30. The drive member 28 and/or the driven member 30 can be mounted on the support element 44.

The traction means guide device 40 comprises a first traction means guide means 46 and a second traction means guide means 48, which are spaced apart from one another transversely to the main direction of movement. A first run 50 of the traction means 32 passes through the first traction means guide means 46 and a second run 52 of the traction means 32 passes through the second traction means guide means 48. The first and second traction means guide means 46, 48 are movable transversely to the main direction of movement. The first and second traction means guide means 46, 48 are connected by means of a connecting element 54. The connecting element 54 includes an elastic element 55 which can generate a restoring force, such as a spring.

The first and second traction means guide means 46, 48 are constructed essentially identically, so that only the first traction means guide means 46 will be described in more detail. The first traction means guide means 46 is approximately cuboid-shaped. The first traction means guide means 46 comprises a through opening 56 for the traction means 32. The first traction means guide means 46 further comprises a detection area 58. The detection area 58 faces the support device 42 in order to be able to be placed on the support device 42.

The torque transmission device 26 includes a housing device 60 which houses the torque transmission device 27. The housing device 60 has a peripheral side wall 62 which extends along the peripheral side of the housing device 60. The side wall 62 is provided on a housing base element 64, for example. The housing device 60 further comprises a housing cover element 66, which together with the housing base element 64 forms a housing 68 into which the torque transmission device 27 can be received.

The functionality of the torque transmission device 26 is explained in more detail below. Particular emphasis is placed on this Fig. 3 to Fig. 5 Referenced.

Fig. 3 shows the torque transmission device 26 without applied torque. The position of the traction device 32 is determined by the installation situation and the own weight of the traction device 32. The length of the traction means 32 is preferably chosen so that the side wall 62 is not touched by the traction means 32 even in this state. The traction means guide device 40 can additionally space the traction means 32 from the housing base element 64 and the housing cover element 66.

Fig. 4 shows the torque transmission device 26 with applied torque and the main direction of movement counterclockwise. In this state, the first strand 50 acts as an empty strand 70 and the second strand 52 acts as a load strand 72. The first traction means guiding means 46 can therefore be referred to as an empty strand guiding means 74 and the second traction means guiding means 48 can be referred to as a load strand guiding means 76. The load strand 72 is tensioned by the effect of the torque. Thus, the load strand 72 moves from its rest position without torque away from the support device 42. The movement is picked up by the load strand guide means 76 and transmitted to the slack strand guide means 74 via the elastic connecting element 54, so that the slack strand guide means 74 to the Support device 42 is pulled. The empty strand 70 is therefore moved away from the side wall 62. The empty strand guiding device 74 then lies against the support device 42, while the load strand guide means 76 is spaced from the support device. Thus, on the one hand, bulging of the empty strand 70 can be prevented, so that contact between the empty strand 70 and the housing device 60 is made more difficult. On the other hand, the load strand 72 is held by the elastic connecting element 54. If the load strand 72 is deflected from its equilibrium position due to torque fluctuations, the elastic connecting element 54 generates a restoring force which forces the load strand 72 back into its starting position. This can also make contact between the load strand 72 and the housing device 60 more difficult. Therefore, the wear and the maintenance effort, in particular for the traction means 32 and the housing device 60, can be reduced.

Fig. 5 shows the torque transmission device 26 with applied torque and the main direction of movement is clockwise. In this state, the first strand 50 acts as the load strand 72 and the second strand 52 acts as the slack strand 70. Thus, the first traction means guiding means 46 can act as the load strand guiding means 76 and the second traction means guiding means 48 can act as the slack strand guiding means 74 be referred to. The functionality is otherwise identical to the opposite main direction of movement.

In known torque transmission devices, which are also referred to as chain boxes for short, the roller chain in the slack strand can rub on the chain box housing if there is no chain tensioner and can therefore cause loud noises and ultimately lead to the destruction of the chain box housing.

The newly developed chain tensioner as a traction device guide device includes two sliding blocks as a traction device guide device and a (tension) spring, which acts as a connecting element and elastically connects the two sliding blocks.

The sliding blocks and the tension spring are arranged approximately in the middle of the connecting profile, which acts as a support device. This arrangement allows the chain tensioner to accommodate maximum elongation of the roller chain or traction device. A special feature of this chain tensioner is its design: with a (compression) spring, both alternating slack and load strands can be tensioned.

List of reference symbols:

10

Goal

11

rolling gate

12

Gate wave

14

Gate leaf

16

Guide rails

18

wrapping bales

20

Gate drive device

22

Drive device

24

Gear motor

26

Torque transmission device

27

Torque transmission device

28

Drive member

30

output member

32

traction means

34

Chain drive wheel

36

Chain driven gear

38

Drive chain

40

Traction guide device

42

Support device

44

Support element

46

first traction means guide means

48

second traction means guide means

50

first dream

52

second dream

54

connecting element

55

elastic element

56

Passage opening

58

Detection area

60

Housing facility

62

Side wall

64

Housing base element

66

Housing cover element

68

Housing

70

empty strand

72

load strand

74

Open strand guide means

76

Last strand guide means

Claims (8)

1. Torque transmission device (26) for a door drive device (20), comprising:

   - a torque transmission means (27) adapted to transmit torque and a driving member (28) connectible to a drive device (22), a driven member (30) connectible to a component (12) of the door (10), a traction means (32) operatively connecting said driving member (28) to said driven member (30) and comprising a first strand (50) and a second strand (52), and a traction means guide device (40), wherein the traction means guide device (40) comprises a first traction means guide means (46) and a second traction means guide means (48), wherein the first and the second traction means guide devices (46, 48) are movable transversely to a first main movement direction of the traction means (32), wherein the first and the second traction means guide means (46, 48) are connected by means of a connecting element (54) comprising an elastic element (55) for generating a restoring force,

   - a support device (42) configured to support the traction means guide device (40),

   - a housing device (60) configured to accommodate the torque transmission device (27) and comprising a lateral wall (62), at least one portion thereof forms an inner circumferential surface,

   characterized in that
   the first and the second traction means guide means (46, 48) are connected in such a way that during torque transmission

   a) the strand (50, 52) of the traction means (32) effective as load-bearing strand (72) is moved away from the support device (42) by the action of the torque and that the strand (50, 52) of the traction means (32) effective as empty strand (70) is moved relative to the portion the lateral wall (62) transversely to the main movement direction of the traction means (32) towards the side of the load-bearing strand (72), so that the empty strand (70) is prevented from touching the portion of the lateral wall (62), and

   b) the traction means guide means (46, 48) guiding the empty strand (70) is an empty strand guide means (74), the traction means guide means (46, 48) guiding the load-bearing strand (72) is a load-bearing strand guide means (76), and wherein at least one section of the empty strand guide means (74) engages the support device (42) in order to prevent a further movement of the empty strand guide means (76) towards the side of the load-bearing strand (72) while the load-bearing strand guide means (76) is spaced from the support device (43), wherein the restoring force effective to the side of the empty strand (70) is produced by the connecting element (54) on the load-bearing strand guide means (76) as soon as the load-bearing strand (72) is deflected from an equilibrium position.
2. Torque transmission device (26) according to claim 1,
   characterized in that the traction means guide means (46, 48) is configured in such a way that during torque transmission a movement of the traction means (32) in its main movement direction is enabled and that a movement of the traction means (32) substantially transversely to its main movement direction is limited.
3. Torque transmission device (26) according to any one of the preceding claims, characterized in that the traction means guide device (40) is provided between the driving member (28) and the driven member (30), in particular in the middle third or centrally therebetween.
4. Torque transmission device (26) according to any one of the preceding claims, characterized in that the load-bearing strand guide means (76) and the empty strand guide means (74) are spaced from each other transversely to the main movement direction.
5. Torque transmission device (26) according to claim 4, characterized in that the empty strand guide means (74) during torque transmission can be moved in such a way that the empty strand guide means (74) engages the support device (42).
6. Torque transmission device (26) according to claim 4 or 5, characterized in that the empty strand guide means (74) during torque transmission engages the support device (42) in such a way that the load-bearing strand guide means (76) is moved against the restoring force in the direction away from the empty strand guide means (74), in particular essentially transversely to the main movement direction of the traction means (32).
7. Door drive device (20) for driving a door shaft (12) of a door (10), comprising a drive device (22) for producing a torque, and a torque transmission device (26) according to any one of the preceding claims, wherein the drive device (22) is connected to the driving member (28) in order to transmit the torque to the driven member (30).
8. Door (10), comprising a door shaft (12), a door leaf (14) and a torque transmission device (26) according to any one of the claims 1 to 6 connected to the door shaft (12) for driving the door leaf (14) and/or a door drive device (20) according to claim 7 connected to the door shaft (12) for driving the door leaf (14).

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