MOVABLE BARRIER, SUCH AS A ROLLING GATE OR SECTIONAL GATE

Description

Background of the invention

[0001] The invention relates to a movable, in particular movable, barrier according to the preamble of claim 1, such as a roller door or a sectional door, which serves to close an opening of a fixed enclosure, wherein an electrical connecting line is led from the fixed enclosure to the movable barrier.

[0002] Movable barriers, such as gates, especially roller doors or sectional doors, which are usually power-operated but can also be manually operated, serve to block or close a generally large opening. The opening is enclosed by a frame, which forms a stationary boundary for the opening. While this frame is stationary, the barrier can be moved along it to open and close the opening. The movable barrier may contain electrical components that move with it. To electrically connect these moving components, an electrical connection is necessary between the stationary frame and the movable barrier.

[0003] From JP 2000 230383 A, a roller door is known as a movable barrier with which an opening in a fixed enclosure can be closed. A cable serves as an electrical connection line from the fixed enclosure to the roller door. Furthermore, a cable reel is provided for selectively winding and unwinding the cable. Before entering the cable reel, the cable is guided by a cable guide, which is designed as a horizontal plate surrounding the cable. Underlying task

[0004] The invention is based on the objective of further improving a movable barrier of the generic type in such a way that it offers further advantages in terms of safety compared to conventional barriers. Inventive solution

[0005] This problem is solved according to the invention with a movable barrier according to claim 1, such as a roller door or a sectional door, which serves to close an opening of a fixed enclosure, wherein an electrical connecting line is led from the fixed enclosure to the movable barrier and wherein a drum device is provided for selectively winding and unwinding the electrical connecting line.

[0006] The solution according to the invention enables a spatially clearly defined arrangement and routing of a connecting line on a movable barrier, while still providing sufficient mobility to ensure that the connecting line remains securely intact in all operating situations of the movable barrier. At the same time, it is ensured that the connecting line is only accessible from the outside over a minimal distance in every operating situation. Accordingly, the risk of potential damage to the connecting line from external influences is minimized.

[0007] In an advantageous embodiment of the invention, the drum assembly is fixedly mounted on the frame. This fixed mounting allows the tensile forces required at the drum assembly to be transferred from the connecting line to the frame.

[0008] The drum mechanism is also advantageously positioned at a height between 1 / 3 and 2 / 3 of the barrier's height. This arrangement results in a particularly short connecting line overall, as it extends downwards from the drum mechanism to the movable barrier when the opening is closed, and upwards to the movable barrier when the opening is open. The connecting line therefore only needs to be approximately half the length of the barrier's travel.

[0009] Furthermore, the drum assembly preferably includes a rotatable drum for holding the electrical connecting cable in its wound state. The drum provides a compact, space-saving, and at the same time kink- and break-resistant storage solution for the connecting cable.

[0010] The drum is preferably spring-loaded in one winding direction. The pre-loaded drum rotates automatically as soon as this allows movement of the shut-off valve and thus a change in the position of the connecting pipe.

[0011] According to the invention, the drum assembly also includes at least one guide for guiding the electrical connecting cable entering or exiting the drum assembly. The guide serves in particular as kink protection for the connecting cable and is especially preferably provided at an outlet of the drum assembly for the connecting cable.

[0012] According to the invention, at least one guiding element is designed as a rotatable guide roller. The rotatable guide roller results in a particularly low force being exerted on the connecting line.

[0013] Preferably, two guide elements are also provided, one of which is designed to guide the electrical connecting cable upwards from the drum assembly, and the second guide element to guide the electrical connecting cable downwards from the drum assembly. The connecting cable is thus guided in a particularly simple and reliable manner, preventing kinking in all operating positions of the movable barrier.

[0014] The two guide means are preferably arranged opposite each other, with an inlet or outlet for the electrical connecting line entering or exiting the drum device being formed between the two guide means.

[0015] Finally, according to a further advantageous embodiment of the invention, a safety device is provided on the movable barrier, which is electrically contacted to the frame via the electrical connecting cable. The solution according to the invention is particularly suitable for connecting such a safety device. The safety device can, in particular, be designed as a safety contact strip at the lower end of the movable barrier. Brief description of the drawings

[0016] An exemplary embodiment of a solution according to the invention is explained in more detail below with reference to the accompanying schematic drawings. It shows: Fig. 1 a perspective view of an embodiment of the solution according to the invention with a drum device, Fig. 2 a drum device according to detail II in Fig. 1 , Fig. 3, view III according to Fig. 2 , Fig. 4 section IV - IV according to Fig. 3, Fig. 5 the section V - V according to Fig. 3 and Fig. 6 section VI - VI according to Fig. 3 . Detailed description of the exemplary embodiment

[0017] The figure shows a shut-off device 10 in which an opening 12 with a frame 14 is formed in a wall 16.

[0018] The barrier device 10 is designed with a movable barrier 18 in the form of a roller gate 18, which is essentially arranged flat and vertically and can be wound vertically upwards along a rail 20 onto a roller 22.

[0019] The roller 22 can be rotated by means of an external power-operated roller drive 24. The roller drive 24 is electrically connected to a fixed wall connection 28 by means of a line 26.

[0020] At the lower end of the movable barrier 18 there is a safety device 30 in the form of a safety contact strip, which is electrically contacted by means of a line 32 to a terminal box 34 which is also attached to the movable barrier 18.

[0021] From the connection box 34 of the movable barrier 18, a connecting line 38 in the form of a multi-core round cable, in particular with between two and ten cores, especially preferably between four and eight cores, is led to a drum device 40.

[0022] The drum assembly 40 is fixedly mounted on the wall 16 at a height between 1 / 3 and 2 / 3 of the height 42 that the movable barrier 18 assumes when closing the opening 12. The drum assembly 40 is particularly preferably mounted at half of that height 42.

[0023] The drum assembly 40 has a housing 44 in which a drum 46 is rotatably mounted on an axle 48. The drum 46 receives the connecting cable 40 within the housing 44 and is to be rotated in a winding direction 50 or an opposite unwinding direction 52. To ensure that the winding of the connecting cable 40 onto the drum 46 occurs automatically, the drum 46 is spring-loaded in the direction of the winding direction 50 by means of a spring 54. The spring 54 is designed as a coil spring and is inserted in a spring retainer 56, which is slid onto the axle 48. The spring 54 is positively engaged at its center against a slot 58 formed in the axle 48 and positively engaged at its outer edge against the spring retainer 56. The drum 46 with the connecting cable 38 wound onto it then engages positively with the spring retainer 56.

[0024] Regarding Fig. 5At the upper end of the shaft 48, an outer contact ring 60 and an inner contact ring 62 are slid onto it. The outer contact ring 60 is electrically connected to one end of the connecting cable wound on the drum 46. Electrical sliding contacts (not shown) extend from the outer contact ring 60 to the inner contact ring 62, and this electrical connection is then extended from the inner contact ring 62 to a circuit board 64 containing electrical components, which is mounted laterally next to the drum 46.

[0025] From the circuit board 64, a line 66 is led to the outside to a fixed wall connection 68, by means of which the safety device 30 is finally electrically connected to the wall 16. Reference symbol list

[0026] 10 Shut-off device 12 Opening 14 Frame 16 Wall 18 Movable shut-off (rolling gate) 20 Rail 22 Roller 24 Roller drive 26 Cable 28 Wall connection roller drive 30 Safety device 32 Cable 34 Junction box on shut-off segment 36 Shut-off segment 38 Connecting cable 40 Drum assembly 42 Height of shut-off 44 Housing 46 Drum 48 Axle 50 Winding direction 52 Unwinding direction 54 Spring 56 Spring cup 58 Slot 60 Outer contact ring 62 Inner contact ring 64 Circuit board 66 Cable 68 Wall connection safety device 70 Guide element (first guide roller) 72 Guide element (second guide roller)

Claims

1. Movable barrier (18), such as a rolling door or a sectional door, which serves to close an opening of a stationary surround (14), wherein an electrical connecting line (38) is guided from the stationary surround (14) to the movable barrier (18) and wherein a drum device (40) is provided for the selective winding and unwinding of the electrical connecting line (38), wherein at least one guiding means (70; 72) is provided on the drum device (40) for guiding the electrical connecting line (38) entering or exiting the drum device (40), characterized in that the at least one guiding means (70; 72) is designed as a rotatable guide roller.

2. Movable barrier according to claim 1, characterized in that the drum device (40) is fixedly attached to the surround (14).

3. Movable barrier according to claim 1 or 2, characterized in that the drum device (40) is arranged in an area between 1 / 3 and 2 / 3 of the height (42) of the barrier (18).

4. Movable barrier according to one of claims 1 to 3, characterized in that the drum device (40) comprises a rotatable drum (46) for receiving the electrical connecting line (38) in the wound state.

5. Movable barrier according to claim 4, characterized in that the drum (46) is resiliently biased in a winding direction of rotation (50).

6. Movable barrier according to one of claims 1 to 5, characterized in that two guiding means (70, 72) are provided, of which one guiding means (70) is designed for guiding the electrical connecting line (38) from the drum device (40) upwards and the second guiding means (72) is designed for guiding the electrical connecting line (38) from the drum device (40) downwards.

7. Movable barrier according to claim 6, characterized in that the two guiding means (70, 72) are arranged opposite each other, wherein an inlet or outlet for the electrical connecting line (38) entering or exiting the drum device (40) is formed between the two guiding means (70, 72).

8. Movable barrier according to one of claims 1 to 7, characterized in that a safety device (30) is provided on the movable barrier (18), which is electrically contacted towards the surround (14) by means of the electrical connecting line (38).