EP2131003B1 - Rotating shaft assembly for a door, in particular for a roller door and such a door - Google Patents

Description

The present invention relates to a rotary shaft arrangement for a gate, in particular for a roller shutter, with a rotating shaft about a rotation axis. Furthermore, the invention relates to a provided with such a rotary shaft assembly gate, in particular a roller door.

In the case of roller shutters, the door leaf is designed, in particular, as a door curtain and comprises, for example, a multiplicity of panels or roller shutter rods which are joined together in an articulated manner and which can be rolled up around a rotary shaft designed as a winding shaft. To drive such roller doors usually a recessed in the winding shaft tubular motor or a flanged on the winding shaft worm gear motor is provided. Furthermore, it is known to provide spring compensations for the weight balance of the door leaf. Such a spring compensation is carried out to reduce the drive power often by a arranged in the rotary or winding shaft torsion spring or by rotatably mounted on the rotary or winding coil spring packages.

In the conventional weight compensation devices, for example, a winding drum with a predetermined pitch or with a spring unit with a predetermined spring characteristic is used. However, it is imperative during assembly then to mount the roller shutter and in particular the rotary shaft assembly very precisely, so that the preset compensation characteristic is achieved. However, at the installation site, a more or less deviant situation often results than previously assumed, so that then after the installation of the door, the preset compensation characteristic can not be achieved.

The DE 39 05 224 A1 discloses a roller shutter with a counterweight device. To compensate for the weight of the door leaf, a weight compensation device is provided on each side of the rotary shaft. Here, on the drums 9a, 9b straps 10a, 10b are wound, at the ends counterweights 11a and 11b are attached. Thus, the counterweights in any operating position of the door leaf can keep the balance largely, the base diameter of the take-up roller and the drums 9a, 9b and the thickness of the door leaf and the straps 10a, 10b are matched. Furthermore, straps 20a, 20b are provided to hold the door panel taut and this pull over a lower end bar 12 down. In this case, the straps 20a, 20b of drums 21 a, 21 b up or unwound. The tensioning devices 22a, 22b serve to compensate for path differences resulting from the opposite changes in the winding diameter of the door leaf and the straps 20a, 20b.

The US 812 722 A discloses a roll-up door with a weight balancing device, wherein the drums are fixedly secured to the rotary shaft.

The DE 20 2004 014 167 U1 discloses a space saving drive solution for a door leaf. Here, the drive comprises a tubular motor, a torsion spring and pulleys. The tubular motor is rotatably connected via a shaft coupling with the rotary shaft. Further, the torsion spring is arranged on the rotary shaft. In this case, one end of the torsion spring is fixed to a stationary spring head and the other end of the torsion spring attached to a spring tensioning head. Depending on the setting of the spring tension head receives the Torsion spring a corresponding bias, which then compensates for a greater or lesser proportion of the weight of the door leaf.

The object of the invention is to provide a rotary shaft arrangement and a gate, so that the rotary shaft arrangement or the door can be adapted in a simple manner to the mounting situation prevailing at the installation location.

To solve this problem, a rotary shaft assembly with the features of claim 1 and a gate with the features of claim 10 is provided. Advantageous embodiments of the invention are the subject of the dependent claims.

In order to adjust the compensation characteristic, it is provided that the weight compensation device can be fastened in different positions relative to the axis of rotation in a positionable and rotationally fixed manner on the rotary shaft. In other words, preferably, the equalizing characteristic is achieved not by exchanging the one counterbalancing device and replacing by another counterbalancing device, but by using one and the same counterbalancing device, which can be mounted in different positions relative to the rotary shaft. In this way, in order to set the optimum for the installation situation compensation characteristic of the weight balancing device, this brought into one of several available positions and then rotatably secured to the rotary shaft. Thus, by means of simple handling and without the use of a plurality of components or use of replacement parts, a simple adjustment or adjustment, in particular a fine adjustment, of the compensation characteristic is possible.

Further, an adjusting device is provided, by means of which the weight compensation device is coupled to the rotary shaft, wherein the adjusting device provides the various positions relative to the axis of rotation. In each of these positions, the weight balancer can be attached to the rotary shaft. Depending on which of the available positions is selected, so can still be done some fine adjustment of the compensation characteristic.

Furthermore, this setting device comprises a first setting unit and a second setting unit, the first setting unit being associated with the rotary shaft and the second setting unit being associated with the weight compensating device. In other words, the components forming the adjustment device can be assigned to different constituents of the rotary shaft arrangement and / or all can be integrated into the weight compensation device.

Further, the first or second adjustment unit has projections and the other adjustment unit recesses in a manner such that the projections and recesses are positively connected to one another.

The positioning of the weight compensation device in the various positions is preferably achieved in that the weight compensation device can be positioned in different predetermined angular positions relative to the axis of rotation. For example, a gear structure with a predetermined pitch can be provided for this purpose, which will be explained in more detail below.

Advantageously, the projections and / or recesses are formed by a gear structure having a predetermined pitch and / or a predetermined pitch angle. Preferably, the pitch angle is between about 5 ° and about 20 °, in particular between about 8 ° and about 12 °. Particularly preferably, the rotary shaft is designed as a toothed shaft, with the projections forming the teeth and the recesses or grooves present between the projections extending parallel to the longitudinal direction of the rotary shaft or parallel to the axis of rotation.

According to an advantageous embodiment, the weight compensation device has a winding device, in particular a conical winding drum, with a predetermined basic compensation characteristic. In other words, the weight compensation device can provide a basic compensation characteristic and at the same time an additional compensation characteristic due to its design and / or its interaction with the rotary shaft. As a result of the adjustable by means of the adjustment additional compensation characteristic, the fine adjustment of the overall compensation characteristic can be carried out.

Furthermore, the weight compensation device may comprise a spring unit. Preferably, the spring unit comprises at least one tension spring. For example, a plurality of mutually arranged tension springs can be provided. The tension springs may be substantially concentric with each other and / or be wound in opposite directions.

Furthermore, the weight compensation device may comprise a coupling element, via which the spring unit is coupled to the winding device, wherein preferably the coupling element comprises at least one cable, in particular two cables. These several cables can be guided substantially parallel to one another and are preferably formed by tension cables, in particular wire cables.

In a further preferred embodiment, at least one driver for transmitting the rotational movement of the rotary shaft is mounted on a rotary shaft housing. Preferably, the driver is cohesively with the Rotary shaft connected. For example, the driver is made of plastic and molded onto the rotary shaft. For example, the rotary shaft may be formed of an aluminum extruded profile, which is introduced into a mold and then the molding material is introduced into the present between the rotary shaft and mold inside cavity for forming the driver under cohesive connection with the rotary shaft.

The gate according to the invention, in particular in the form of a roller shutter, comprises a door leaf and a rotary shaft arrangement according to the invention, wherein the rotary shaft is rotatably mounted on the door leaf and wherein the weight compensation device has a compensation characteristic for balancing the weight of the door leaf when opening and closing the door leaf. The gate according to the invention makes use of the advantages of the rotary shaft arrangement according to the invention, to which reference is hereby made.

In a preferred embodiment, a drive unit is connected via a transmission device to the rotary shaft for rotationally driving the same, wherein the transmission device has a traction mechanism with a closed traction means to an endless loop. More preferably, the transmission device may have a self-locking worm gear. The worm gear preferably has a ratio of at least 1:20, preferably at least 1:60 and more preferably more than 1:80. The traction mechanism is designed for example as a positive traction mechanism.

According to a further preferred embodiment, a rotary shaft housing is provided which is non-rotatably connected via at least one driver with the rotary shaft, wherein on the rotary shaft housing a door curtain is attached as a door leaf. Furthermore, it can be provided that the door curtain is attached in a rotationally fixed manner to the rotary shaft via support elements mounted on the rotary shaft housing. Furthermore, the door curtain can be attached to the support element or to the rotary shaft housing via at least one spring band.

The support element preferably has an at least arcuate outer surface and is used to attach the rotary shaft end of the door curtain and for storage in particular of the first rod element of the door curtain, but also the subsequent elements of the door curtain during winding and unwinding of the door curtain. For attachment of the rotary shaft-side end of the door curtain, at least one spring band can be used, which is fastened to the support element and / or the rotary shaft housing. Furthermore, it proves to be advantageous if a plurality of support elements are provided and between these support elements a Montagezugmittel can be attached to the rotary shaft or the rotary shaft housing. Thus, the support elements, as described above, serve to support the door curtain, and after completed installation of the door curtain on the rotary shaft completely wound Montagezugbänder can serve as a resilient bearing elements for the door curtain.

Fig. 1

eine Innenansicht auf ein Rolltor mit Antriebsvorrichtung und Gewichtsausgleichseinrichtung;

Fig. 2

eine perspektivische Ansicht einer Drehwellenanordnung für das Rolltor gemäß Fig. 1;

Fig. 3

eine vergrößerte Darstellung des rechtsseitigen Endbereiches der Drehwellenanordnung gemäß Fig. 2;

Fig. 4

eine Ansicht der Drehwellenanordnung gemäß Fig. 2;

Fig. 5

ein Längsschnitt durch die Drehwellenanordnung gemäß der Linie V-V in Fig. 4;

Fig. 6

ein Querschnitt gemäß der Linie VI-VI in Fig. 4;

Fig. 7

eine Ansicht des in Fig. 4 rechtsseitigen Endes der Drehwellenanordnung;

Fig. 8

eine perspektivische Ansicht eines Abschnittes der Drehwelle mit zwei Mitnehmern;

Fig. 9

eine Ansicht auf die Anordnung gemäß Fig. 8;

Fig. 10

einen Längsschnitt durch die Anordnung gemäß Fig. 8;

Fig. 11

eine Ansicht auf das in Fig. 10 rechtsseitige Ende der Anordnung;

Fig. 12

eine Seitenansicht eines Endes der Drehwelle, und

Fig. 13

eine vergrößerte Darstellung des Details XIII in Fig. 12.

Embodiments of the invention are explained below with reference to the drawings. Here are shown schematically:

Fig. 1

an inside view of a roller shutter with drive device and weight compensation device;

Fig. 2

a perspective view of a rotary shaft assembly for the roller door according to Fig. 1 ;

Fig. 3

an enlarged view of the right side end portion of the rotary shaft assembly according to Fig. 2 ;

Fig. 4

a view of the rotary shaft assembly according to Fig. 2 ;

Fig. 5

a longitudinal section through the rotary shaft assembly according to the line VV in Fig. 4 ;

Fig. 6

a cross section according to the line VI-VI in Fig. 4 ;

Fig. 7

a view of the in Fig. 4 right-hand end of the rotary shaft assembly;

Fig. 8

a perspective view of a portion of the rotary shaft with two drivers;

Fig. 9

a view of the arrangement according to Fig. 8 ;

Fig. 10

a longitudinal section through the arrangement according to Fig. 8 ;

Fig. 11

a view on the in Fig. 10 right-hand end of the arrangement;

Fig. 12

a side view of one end of the rotary shaft, and

Fig. 13

an enlarged view of detail XIII in Fig. 12 ,

At the in FIG. 1 Gate 100 is a roller door for opening and closing a building opening 102. Gate 100 includes a door leaf 110 having a door hanger 112 which has a plurality of hinged rods or fins 114. In the area of a lower closing edge 117, which in the closed position touches the floor 103, there is a closing profile 116 on the door curtain 112, wherein the closing profile 116 may comprise, for example, a seal and / or an anti-pinch protection. The gate 100 is fixed by means of a frame 104 as a stationary frame member at the edge of the building opening 102. The frame 104 has two guide rails 105, 106 with attached support brackets 107, 108. When opening and closing the door 100 along the door path S, the door curtain 112 is guided with its lateral edges in the guide rails 105, 106. On the support brackets 107, 108 a rotary shaft assembly 10 is mounted. The rotary shaft assembly 10 is in the FIGS. 2 to 13 further illustrated and will be explained in more detail below.

The rotary shaft assembly 10 includes a rotary shaft 20 which is rotatably supported about two bearings 12 about a rotation axis D. Here, the rotary shaft 20 has a first end 21 and a second end 22, wherein a bearing 12 is provided in the region of the first end 21 and a bearing 12 in the region of the second end 22. On the rotary shaft 20, a plurality of carriers 26 are attached, to which a rotary shaft housing 24 is rotatably mounted in the form of a octagonal steel shaft. The driver 26 transmit the rotational movement of the rotary shaft 20 to the rotary shaft housing 24. At this rotary shaft housing 24 of the door curtain 112 is suitably mounted for winding the door curtain 112 on the rotary shaft 20 and for unwinding of the door curtain 112 of the rotary shaft 20. For the storage of the door curtain 112 during winding and unwinding the support elements 28 and / or spring strips 29, which are explained below, are provided.

In order to generate a rotational movement of the rotary shaft 20, a drive device 120 for driving the rotary shaft 20 is provided at the second end 23 of the rotary shaft 20. This drive device 120 has a drive unit 122 and a transmission device 130 with a traction mechanism 132 and a traction mechanism 134. With regard to the exact structure and operation of the drive device 120 is on the relevant statements in the European patent application with the official file number EP08101812.9 to the drive device 26 explained there and the transmission device 74 with the traction mechanism 78 and the other components referenced. The relevant explanations, in particular with regard to the local authorities Figures 2 and 3 are hereby made the disclosure of the present application.

In the region of the first end 21 of the rotary shaft 20, a counterweight 30 engages the rotary shaft 20. In the present embodiment, the weight compensation device 30 comprises a winding device 40 with a conically shaped winding drum 42. The winding drum 42 has an outer side 44 with a spiral groove 45 having a predetermined pitch. Furthermore, the winding drum has an inner wall or inner side 48 provided by a bore 46.

In particular, by this winding device 40 with the predetermined pitch of the winding drum 42, a certain compensation characteristic for compensating the weight of the door leaf 110 is provided.

In addition, the weight compensation device 30 has a spring unit 50 in the form of a spring assembly, which is formed from at least one inner tension spring 52 and an outer tension spring 54. The inner tension spring 52 is received approximately concentrically within the outer tension spring 54. The tension springs 52, 54 are wound in opposite directions to prevent mutual entanglement. The entire spring assembly is received in a cavity of the frame 104, as indicated by a dashed frame profile part in Fig. 1 is indicated.

A first end of the spring unit 50 is connected via a spring seat with a pull hook to a stationary region of the frame 104. At its second end, the spring unit 50 is coupled via a coupling element 60 to the winding device 40. The coupling element 60 comprises at least one traction means, for example in the form of a rope 62, and in particular two ropes 62, 64. The two ropes 62, 64 are approximately parallel, are attached with their ends to the winding drum 42 and in the groove 45 in the form of a Double groove led. During winding and unwinding of the door curtain 112, the cables 62, 64 are wound onto the winding drum 42 or unwound from the winding drum 42.

As a result of the above-described construction of the weight balancing device 30 with winding device 40, spring unit 50 and coupling element 60 and its other components, the tensile force of the tension springs 52, 54 applied in particular on the resulting from the respective position of the winding drum 42 lever arm as a torque to the winding shaft 20 , Due to the pitch of the winding drum 42 and the resulting differently resulting lever arms, the torque caused by the tensile force of the position or position of the rotary shaft 20 is dependent. The respective torque counteracts the torque of the door leaf 110 which is dependent on the door leaf 110 through the door leaf 110 in its different positions between the open and closed positions, as a result of which a substantial compensation of the torques occurring is achieved. These two counteracting torques cause a characteristic of the respective gate compensation characteristic. The lower the resulting difference from the torque compensation, the less powerful a drive device 120 of the gate 100 explained below can be formed.

With regard to the operation of the weight compensation device 30 with the compensation characteristic is on the relevant embodiments in the European patent application with the official file number EP08101812.9 directed. The relevant embodiments and in particular the explanations of the torque characteristics of the counteracting torques and the resulting compensation characteristic are hereby made part of the disclosure of the present application.

In the in the FIGS. 1 to 13 an adjustment of the compensation characteristic of the weight compensation device 30 is further provided, wherein the weight compensation device 30 in different positions relative to the rotational axis D positionable and rotationally fixed to the rotary shaft 20 can be fastened. In the exemplary embodiment shown, the weight compensation device 30 can be positioned at different angular positions relative to the axis of rotation D at the latter and, after the desired setting of one of these positions, can be fastened in a rotationally fixed manner to the rotary shaft 20.

For this purpose, an adjusting device 70 is provided, which provides the various positions relative to the axis of rotation D. The adjustment device 70 comprises a first adjustment unit 80 and a second adjustment unit 90, wherein the first adjustment unit 80 is associated with the rotary shaft 20 and the second adjustment unit 90 is associated with the weight compensation device 30 and there the winding device 40. The first adjusting unit 80 is formed by the surface configuration of the outer side 23 of the rotary shaft 20. This outer side 23 has a plurality of teeth or protrusions 82 formed by a gear structure or a tooth profile having a predetermined pitch and a predetermined pitch angle α (see FIG FIGS. 12, 13 ). The second adjustment unit 90 is formed by the surface configuration of the inside 48 of the winding drum 42. The inside 23 has for this purpose suitably formed recesses 92 for receiving the projections 82, wherein the recesses also according as the outer side 44 of the winding drum 42 are provided by a gear structure with a corresponding pitch and a pitch angle. The projections 82 and recesses 92 are engageable with each other in the form of a positive connection and disengageable. In a positive connection of the two adjusting units 80, 90 can be carried out a fast feasible and no replacement components requiring adjustment, adjustment or fine adjustment of the compensation characteristic of the weight balancing device 30. In addition, a non-positive connection of first setting unit 80 and second setting unit 90 can be selected.

Thus, after assembly of the frame 104 with the guide rails 105, 106, the rotary shaft assembly 10 by means of the support brackets 107, 108 are mounted. In the event that it is then determined that the weight compensation device 30 has not yet the desired compensation characteristic for an optimal balance of the weight of the door leaf 110, a fine adjustment of this compensation characteristic can be carried out by the winding drum 42 is withdrawn from the rotary shaft 20 to a certain angle about the axis of rotation D around, for example, according to a certain number of projections 82 or recesses 92, then the winding drum 42 is pushed back in the rotated position on the rotary shaft 20 and the positive connection of protrusions 82 and recesses 92 a rotationally fixed connection of Rotary shaft 20 and winding drum 42 is achieved. This process can be repeated accordingly for a further adjustment or a change in the adjustment of the compensation characteristic.

The FIGS. 8 to 11 show the arrangement provided in the interior of the rotary shaft housing 24 of the rotary shaft 20 with two of the plurality of drivers 26. The rotary shaft 20 is formed of extruded aluminum profile and has, in particular in the region of the first end 21, a gear structure with the projections 82 on. Preferably, the outer side 23 of the rotary shaft 20 over the entire length of this tooth structure or gear structure with the teeth or projections 82. This results in the advantage of a simple and fixed attachment of the driver 26 on the rotary shaft 20. The driver 26 are namely preferably made of plastic (for example, PA) and molded onto the rotary shaft 20. For this purpose, the rotary shaft 20 is introduced into a mold in such a way that a cavity corresponding to the shape of the driver 26 is formed between the rotary shaft 20 and the mold, so that subsequently the molding compound can be introduced into the mold cavity. The cured molding compound then forms the respective driver 26, which thus positively engages with the formation of corresponding elevations which engage in the recesses of the outer side 23 of the rotary shaft 20 formed between the projections 82 and are adhesively bonded to the rotary shaft 20 after curing of the molding compound. In this way, a one-piece component is provided by the rotary shaft 20 and the cohesively fastened thereon drivers 26 that can be rotatably mounted on the bearing brackets 107, 108 via the bearings 12. Further, the rotary shaft housing 24 may be attached to the drivers 26. Furthermore, on the toothed structure of the rotary shaft 20 in the region of the second end 22, the traction mechanism 132 can be easily attached to the rotary shaft. For this purpose, a driver for the traction mechanism 132 is provided, which has on the inner wall of a central bore a tooth structure, which is engageable with the toothed structure of the rotary shaft 20 in engagement. As a result, the driver of the traction mechanism 132 can be pushed onto the rotary shaft 20. Optionally, an additional backup can be done.

LIST OF REFERENCE NUMBERS

10

Rotating shaft assembly

12

camp

20

rotary shaft

21

first end

22

second end

23

outside

24

Swivel casing

26

takeaway

28

support element

30

Weight balancer

40

winding device

42

winding drum

44

outside

45

groove

46

drilling

48

inside

50

spring unit

52

inner tension spring

54

outer tension spring

60

coupling element

62

rope

64

rope

70

adjustment

80

first adjustment unit

82

head Start

90

second adjustment unit

92

recess

100

gate

102

building opening

103

ground

104

frame

105

guide rail

106

guide rail

107

support bracket

108

support bracket

110

door leaf

112

Door curtain

114

rods

116

End profile

117

closing edge

120

driving device

122

power unit

130

transmission device

132

traction drives

134

traction means

S

torweg

D

axis of rotation

α

pitch angle

Claims (13)

1. Rotating shaft assembly (10) for a door (100), in particular for a roller door, the assembly comprising a rotating shaft (20) rotatable about an axis of rotation (D), a weight balancing device (30) engaging on said rotating shaft (20) and having a balancing characteristic for balancing the weight of a door leaf (110) of the door (100) non-rotatably fixed to said rotating shaft (20), wherein said balancing characteristic of the weight balancing device (30) is adjustable by the weight balancing device (30) being adapted for being positioned in various positions relative to the axis of rotation (D) and for being non-rotatably fixed to the rotating shaft (20) and wherein there is provided an adjustment device (70) through which the weight balancing device (30) is coupled to the rotating shaft (20), wherein the adjustment device (70) provides the various positions relative to the axis of rotation (D), wherein the adjustment device (70) comprises a first adjustment unit (80) and a second adjustment unit (90), wherein the first adjustment unit (80) is associated with the rotating shaft (20) and the second adjustment unit (90) is associated with the weight balancing device (30) and wherein the first adjustment unit (80) or the second adjustment unit (90) comprise protrusions (82) that can be connected to corresponding recesses (92) of the other adjustment unit (80, 90) in a form-locking manner.
2. Rotating shaft assembly (10) according to claim 1, characterized in that the balancing characteristic of the weight balancing device (30) can be adjusted by the weight balancing device (30) being adapted for being positioned at various predetermined angles relative to the axis of rotation (D) and for being non-rotatably fixed to the rotating shaft (20).
3. Rotating shaft assembly (10) according to claim 1, characterized in that the protrusions (82) and/or the recesses (92) are formed by a gear wheel structure having a predetermined pitch and/or a predetermined pitch angle (α).
4. Rotating shaft assembly (10) according to claim 3, characterized in that the pitch angle (α) is between circa 5° and circa 20°, in particular between circa 8° and circa 12°.
5. Rotating shaft assembly (10) according to one of the preceding claims, characterized in that the weight balancing device (30) includes a winding device (40), in particular a conical winding drum (42), which presents a predetermined basic balancing characteristic.
6. Rotating shaft assembly (10) according to one of the preceding claims, characterized in that the weight balancing device (30) includes a spring unit (50) that preferably comprises at least one tension spring (52, 54).
7. Rotating shaft assembly (10) according to one of the preceding claims, characterized in that the weight balancing device (30) includes a coupling element (60) through which the spring unit (50) is coupled to the winding device (40), wherein preferably said coupling element (60) comprises at least one rope (62), in particular two ropes (62, 64).
8. Rotating shaft assembly (10) according to one of the preceding claims, characterized in that there is mounted at least one driver (26) for transmitting the rotary movement of the rotating shaft (20) to a rotating shaft housing (24).
9. Rotating shaft assembly (10) according to claim 8, characterized in that the driver (26) is connected to the rotating shaft (20) substance-to-substance and in particular said driver (26) is molded to the rotating shaft (20) by injection molding.
10. Door (100), in particular a roller door, having a door leaf (110) and a rotating shaft assembly (10) according to one of the preceding claims, wherein the rotating shaft (20) is non-rotatably fixed to the door leaf (110) and wherein the weight balancing device (30) presents a balancing characteristic for balancing the weight of the door leaf (110) during opening and closing said door leaf (110).
11. Door (100) according to claim 10, characterized in that a drive unit (122) is connected to the rotating shaft (20) via a gear mechanism (130), for rotationally driving said rotating shaft, wherein said gear mechanism (130) includes a traction drive (132) having a traction means (134) forming an endless loop.
12. Door (100) according to claim 10 or 11, characterized in that a rotating shaft housing (24) is non-rotatably fixed to the rotating shaft (20) via at least one driver (26) and that on the rotating shaft housing (24) there is fixed a door curtain (112) as a door leaf (110).
13. Door (100) according to one of the claims 10 to 12, characterized in that said door curtain (112) is non-rotatably fixed to the rotating shaft (20) via bearing elements (28) attached to the rotating shaft housing (24).

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