ES2713093T3 - Security device - Google Patents

Abstract

Safety device (1, 40) for a movable leaf of a door, in particular a sectional door, which moves between an open position and a closed position through guide rails, the door leaf being laterally equipped with cables traction (5) that are fixed in the lower part of the door leaf and are respectively guided through the deviations (11), the fastening of at least one traction cable (5) being made through the safety device ( 1, 40) in such a way that when the door leaf is closed, a continuous adjustment of the traction cable length is provided, the safety device (1, 40) comprising a fixed base (9) and a part comprising upper, variable in position with respect to the base (9) through a rotation axis (8), with a movable connection element (16), registering a change in the length of the traction cable (5) by means of the upper part (7) and detecting said change by r a sensor or switching element (29) of the safety device, characterized in that the connecting element (16) is formed as a circular piece with a guide part (33) and disposes at the top, at its periphery, of a circumferential notch (26), the upper part (7) comprising an oval-shaped perforation (34) with drag stops (35) that protrude laterally and engage in the notch (26) of the connecting element (16), also providing the safety device (1, 40) of a spring element (28) which, on the one hand, adheres or rests on the base (9), fitting the other end of the spring element (27) into the recess (26 ) of the connection element (16), the connection element (16) being guided in floating position in the upper part (7) through a through hole (32) of the base (9). there is a hole (19) inside the connecting element (16) in the axial direction, through which an adjustment screw (6) passes through a lock nut (14), the traction cable (5) being able to be connected through a cable connection (10) and an eyelet (25) with the adjustment screw (6), so that the traction cable (5) can be connected to the safety device (1.40) with an adjustment of the length by means of the adjusting screw (6), so that when tearing or relaxing the tension cable (5) change the position of the upper part (7) with respect to the base (9) by the spring element ( 28), said upper part (7) rotating around the axis of rotation (8) by means of the connecting element (16) and its drag stops (35) in such a way that the sensor or switching element (29) is actuated by means of a drive edge (31) existing in the upper part (7).

Description

DESCRIPTION

Security device

The invention relates to a safety device for the movable leaf of a door, especially a sectional door, which changes from an opening position to a closing position by means of bar rails. The door leaf has on the sides traction cables attached to the lower part of the door leaf and guided respectively by deviations. These can also collaborate with a spring device.

A door of this type is described, for example, in DE 79 12249 U1. There is described a traction cable with a door suspension device and a safety device for loose cable incorporated for a roll-up portal or articulated roof door. The door suspension device has a clamping device for a traction cable together with a switch for turning off the motor of the traction cable and of an actuating element for the switch.

DE 101 13847 shows a safety device for a door leaf movable between an opening position, preferably on the head, and a closing position with at least one safety element, adjustable between a release position, in which the movement of the door and an opposite locking position are released, wherein said leaf cooperates, if necessary, with other security elements of a security device for door leaf. The invention is characterized in that the safety element, adjusted in the safety position, counteracts a closing movement of the door leaf from the open position to the closed position, at least along a first section of the predetermined path which is fused in the open position, optionally cooperating with at least one additional security element and because in the closing position and / or along a second section of the predetermined path, which merges with the closing position, the element of safety counteracts an opening movement of the door leaf from the closing position to the opening position, optionally cooperating with at least one additional safety element. In this case, a control cam is located at the axial end of the safety lever for actuating a switch of a driving device for the door leaf by turning the safety lever from the release position to the safety position

In articulated roof doors or roll-up doors, traction cables are usually arranged laterally in the lower part of the door, so that it can be brought to the opening position as a consequence of the traction exerted on the articulated roof door cables. or of the roll-up door through cable drums in connection with a drive motor. In the direction of the closing position the drive acts in the opposite direction. It is very important that, for example, if these tractor cables are torn, an inclination of each of the sectors within the side rail rails occurs. The same happens, for example, in case of failure of the safety device or in other events such as the door leaf colliding with an obstacle. In order to avoid this, loose cable safety devices are provided in doors of this type, the purpose of which is to immediately cause the drive motor to stop in case of breakage or collision with an obstacle.

DE 29503553 U1 discloses a control device for a loading cable of a door leaf. The control device consists of an electrical signal interception device connected to the charging cable and to the drive motor used to move the door leaf. By means of this electrical signal capture device, the drive motor is automatically switched off in case of cable breakage. A mechanical capture device for the door leaf is also provided.

The patent DE 20204194 U1 describes a safety switching device for connecting a door drive with at least one load cable for a door leaf with one or more parts, which has a signal interception device with at least two parts main ones joined together pivotally around an axis. Of the main pieces, at least one, has an approximately U-shaped frame, with a spring device to generate an initial tension between the two main parts around the axis and a cable accessory that connects at least one load cable with the capture device, in such a way that the two main parts, during normal operation of the door leaf, are kept in a resting position with each other, because of the tension of the at least one charging cable against the inclination of the spring device.

Patent EP 1808563 A2, as well as WO 00/57011 A1 describe similarly safety devices for door loading cables.

The object of the invention is to provide a security device for a movable door leaf, in particular a sectional door, which is easy to assemble and connect, can not be manipulated, is economical to produce and is replaceable.

The object of the invention is achieved with the features of the patent claim 1. The dependent claims reproduce a further configuration of the inventive concept. The invention is characterized in that a safety device for a movable door leaf, in particular a sectional door, which moves between an opening position and a closing position through guiding rails, is ensured in such a way that both, or only one of the traction cables arranged laterally on the door leaf, are actuated by an additional safety device. The safety device is designed so that with the door leaf closed, a continuous adjustment of the cable length is provided.

The safety device can be installed interchangeably in a part of the base, which is in the lower part of the door leaf or in the last section of a sectional door, by means of a simple screw assembly. At the same time, the safety device is secured against rotation. The safety device consists of a base, which is completed with an upper part through an axis of rotation and which cooperates, also through the axis of rotation, functionally with said upper part. Inside the upper part, in a floating suspension, there is a connection piece, which is guided inside a hole in the base. By means of this connection piece, which can have a hole or also a thread, the length of the traction cable is adjusted and determined by means of an adjusting screw and a cooperating counter-nut. With this construction, good accessibility to the adjusting screw is also provided once installed, which is not possible in the known state of the art. The upper part is also spring loaded with respect to the base, so that when the traction cable is not connected or when its length is modified or the traction cable is torn, the upper part is lifted or rotated in its position, at least partially, of the base by means of the spring element. With such a change of relative position of the upper part with respect to the base, a sensor or a switching element located inside the safety device is simultaneously detected by means of a drive edge. This sensor or switching element is coupled directly or indirectly to the motor circuit, so that the motor function is immediately turned off when it responds to the sensor or the switching element.

According to the invention, a spring design is selected so that it is placed as a coil around the point of rotation of the upper part and is supported with a spring end against the base. The other end of the spring acts on the floating connection element. If the tension cable is extended, the spring forces are therefore activated and press a connecting element and, therefore, the upper part upwards, which in turn causes a response from the sensor or the switching element and, therefore, the stop of the door.

In a non-inventive embodiment, the spring element does not act on the connecting element. The connecting element is held by the traction cable against the upper part of the safety device. The second end of the spring rests directly against the upper part. With this construction design, the mobility of the connection element is even greater than in the first preferred embodiment and guarantees a functioning of the door without problems.

These versions of the security device are easy to install and also replaceable, require only a small space and are very accessible. The sensor or switching element is sufficiently protected against tampering or deterioration, as it is located below the top of the safety device. You can test the functionality of such sensor or switching element, being this installed and without the need to disassemble parts.

The safety device can be made, for example, of plastic or by injection molding. Such a production method drastically reduces the manufacturing costs of a mass-produced article.

Other advantages, characteristics and possible applications of the present invention are shown in the following description of the embodiments illustrated in the drawings. In the description, in the claims and in the drawings, the terms listed in the list of reference numbers with their corresponding reference numbers are used. The following is shown in the drawings:

Figure 1 a first perspective representation of a use of a security device according to the invention;

Figure 2 a side view of an installed security device;

3 shows a front view of a safety device according to FIG. 2;

Figure 4 a detailed representation of an installed security device;

Figure 5 a sectional view through a security device installed in a door;

Figure 6 same as figure 5, but with the safety device in operation;

Figure 7 a perspective view from below of a safety device;

Figure 8 a top view on the upper part of the safety device;

Figure 9 a sectional view through a non-inventive embodiment of a safety device in a closed condition;

Figure 10 same as figure 9, but in an open situation;

Figure 11 the safety device according to figure 9 without the connecting element;

Figure 12 a perspective view of a preferred embodiment of a spring element, and

Figure 13 a perspective view from the rear on a safety device.

In the illustration of figure 1, a mounting part 3 is shown, which is installed by means of screw elements 4 in the lower part of the last section of a leaf of a door, not shown, in particular a sectional door. In figure 1, a safety device 1, 40 can be seen in the upper part, which is connected to a traction cable 5, which is guided by a deviation 11. The direct connection of the traction cable 5 through the safety 1, 40 is carried out by means of an adjusting screw 6 together with a lock nut 14.

The deviation 11 is connected on a common shaft 12 with an externally mounted roller 2. The section of the deviation 11 is protected by a cover 13.

In the side view of figure 2 it is clear that the traction cable 5 is first connected to the safety device 1, 40, for example through an eyelet 25 and after leaving the deviation 11, the traction cable 5 it is directed towards a winder shaft not shown to operate the door leaf. For the shaft 12, already known from FIG. 1, a hole 23 is provided within the deflection 11.

In the front view of figure 3, the mounting of the safety device 1, 40 on the upper part of the mounting part 3 is clearly seen again. At the same time, the safety device 1, 40 is firmly connected in a positive connection with the mounting part 3 by means of a screw element 15. Furthermore, in FIG. 3, a cable connection 10 of the traction cable 5 is clearly seen. In order to prevent the traction cable 5 from unintentionally leaving the deflection 11 , for example, in the event of tearing of the traction cable 5, a locking device 22 of the traction cable is arranged in the area of the deflection 11. This locking 22 of the traction cable prevents, for example, that when the connection of the traction cable 5 is opened in the area of the eyelet 25, the traction cable 5 comes out of the deflection 11.

The safety device 1, 40 consists essentially of a base 9 having a recess 21 and is fastened to the mounting part 3 by means of the screw element 15 and a nut 20. With the recess 21, for example, it is ensured that the water that may have entered does not remain in the safety device and can drain.

An upper part 7 of the safety device 1, 40 is connected to the base 9 through a rotational axis 8. Inside the upper part 7, as clarified in figure 8, a perforation 34 is provided. Said perforation 34 it is designed in an oval shape and has trailing stops 35 projected towards it. These lateral traversing stops 35 are preferably in the form of a circular arc section or the like, a connecting element 16 resting on its rounded upper part. Through the bore 34 the connecting element 16 can be seen. The adjusting screw 6 passes through the connecting element 16 and is secured by means of the locknut 14. The pull cable 5 is connected, adjustable in length by the adjusting screw 6, through the eyelet 25 and the cable connection 10.

According to FIG. 5, the embodiment of the safety device 1 according to the invention is shown in a sectional view in a position corresponding to the installed situation of FIG. 4. However, for clarity, neither the screw nor the screw is shown. of adjustment 6, nor the connection of cable 10.

Inside the base 9 there is a round through hole 32 into which the connecting element 16 penetrates. The connecting element 16 is designed as a circular piece with a guide zone 33 and has, in the upper part, on its periphery, a circumferential notch 26. In this notch 26 the driving stops 35 already described in FIG. 8 and a spring element 28 are engaged and allow the connecting element 16 to be embedded in a floating manner inside the upper part 7 and, by rotating the upper part 7 about the axis of rotation 8, the connecting element 16 can change its relative position due to the force of the spring element 28. In the axial direction, a hole 19 is provided inside the connection element 16. its connection to the adjusting screw 6. Here also a thread not shown inside the hole 19 could be arranged.

The safety device 1 has a spring element 28 which allows, in the event of tearing of the traction cable 5, the upper part 7 to change position with respect to the base 9. On the one hand, the spring element 28 rests or is supported on the base 9 and the other end 27 of the spring element is fitted inside the notch 26 of the connecting element 16. When the end 27 of the spring element is engaged in the connecting element 16, a change of position of the connecting element 16 around the axis of rotation 8 when the safety device 1 is activated. By means of the driving stops 35 the upper part 7 rotates through the connection element 16 around the point of rotation. This change of position of the upper part 7 has as a consequence that a sensor or switching element 29 is activated by means of an activation edge 31 or the like, in this case using a switch flag 30. The sensor or switching element 29 it is electrically connected to a motor circuit, which, when the sensor or switching element 29 is activated, causes an immediate stop of the motor drive.

In figure 6 the change of position of the upper part 7 with respect to the base 9 is clearly seen. It is clear that the connecting element 16 changes its relative position with respect to the base 9 by means of the spring element 28. It is also In the illustration of FIG. 6, the activation of the sensor or switching element 29 can be seen through a drive edge 31 and a switch flag 30. At the same time, the upper 7 a stop 24 to limit the rotation movement of the upper part 7 with respect to the base 9. In the illustration of figure 7 showing the safety device seen from below can be seen in particular the continuous recess 21, which Allows the drainage of water that may have penetrated.

Figure 9 shows another non-inventive embodiment of the safety device 40. In this exemplary embodiment, the connection element 16 is not subjected to load by the spring element 28. In this embodiment, the connecting element is also supported. 16 floating on the trailing stops 35. Thus, the spring element 28 bears with its ends 27 on the base 9 and against the upper part 7. The connection element 16 has a continuous slot below its upper edge, which in figure 9 corresponds to half hole 36 inside the base 9. At the same time, the half hole 36 is aligned with a holding surface 42 of the upper part 7. Thus it is possible to push a safety element 49 through of the half hole 36 for holding the safety device 40 against the spring force and facilitating the assembly (see Figure 13).

Figure 10 shows the position of the safety device 40 with the upper part 7 raised by means of the spring element 28. This also clearly shows the elevation of the connecting element 16.

In the illustration of FIG. 11, the area of the trailing stops 35 and the connection path for the blocking element 49 are clearly seen, since the connection element 16 is not shown. The blocking element 49, not shown here, passes through. to the upper part 7 through a hole 43 of the base 9 and the clamping surfaces 42 aligned therewith. If, after installation, the blocking element 49 is no longer needed, it can be inserted into a parking hole 48. The blocking element 49 can also be used to test the sensor or switching element 29 through an opening 38. The security device 40 comprises an electrical connection 39. The axis of rotation 8 is secured by a blocking element 41.

The spring element 28 used with the safety device 1, 40 can be seen in detail in a single view of Figure 12. Starting from a coil 44 with an area 45, receiving the axis of rotation 8, two spring arms 46 emerge. , extended in their rest position, ending in areas 47 curved together at the ends 27 of the spring element.

List of numerical references of the drawings

1 security device

2 roller

3 mounting piece

4 screw element

5 traction cable

6 adjustment screw

7 top

8 axis of rotation

9 base part

10 cable connection

11 deviation

12 axis

13 cover

14 locknut

15 screw element

16 connection element

17 drilling

18 gufa sleeve

19 hole

20 nut

21 recess

22 traction cable lock

23 hole

24 cap

25 eyelet

26 notch

27 ends of the spring element

28 spring element

29 sensor or switching element

30 switch flag

31 drive edge

32 through hole

gufa area drilling

trailing stops half hole

flange

opening

safety device orifice safety element

coil

receiving area

spring arm

curved area

parking hole safety element

Claims (3)

1. Safety device (1, 40) for a movable leaf of a door, in particular a sectional door, which moves between an open position and a closed position through guide rails, the door leaf being laterally equipped with traction cables (5) that are fixed in the lower area of the door leaf and are respectively guided through the deviations (1l), the fastening of at least one traction cable (5) being carried out through the device safety (1, 40) in such a way that when the door leaf is closed a continuous adjustment of the length of the traction cable is provided, the safety device (1, 40) comprising a fixed base (9) and an upper part, variable in its position with respect to the base (9) through an axis of rotation (8), with a movable connection element (16), a change in the length of the traction cable (5) being registered by medium of the upper part (7) and detecting said change by a sensor or the switching element (29) of the safety device, characterized in that the connection element (16) is formed as a circular part with a guide part (33) and has a circumferential notch (at its periphery) at the top. 26), the upper part (7) comprising an oval-shaped perforation (34) with driving stops (35) projecting laterally and engaging in the notch (26) of the connecting element (16), also having the safety device (1, 40) of a spring element (28) which, on the one hand, adheres or rests on the base (9), the other end of the spring element (27) engaging in the notch (26) of the element connection (16), the connecting element (16) being guided in floating position in the upper part (7) through a through hole (32) of the base (9). there being a hole (19) inside the connecting element (16) in the axial direction, through which passes an adjusting screw (6) secured by means of a lock nut (14), the traction cable (5) being able to be connected through a cable connection (10) and an eyelet (25) with the adjusting screw (6), so that the traction cable (5) can be connected to the safety device (1,40) with an adjustment of the length by means of the adjusting screw (6), so that when tearing or relaxing the traction cable (5) change the position of the upper part (7) with respect to the base (9) by the spring element ( 28), said upper part (7) rotating around the axis of rotation (8) by means of the connecting element (16) and its driving stops (35) in such a way that the sensor or switching element (29) is operated. by means of an operating edge (31) existing in the upper part (7). 2. Safety device according to claim 1, characterized in that a signal generated directly or indirectly by means of the drive edge (31) through the sensor or switching element (29) can be connected directly or indirectly to an engine function circuit. . 3. Door, in particular sectional door with at least one security device (1.40) according to the preceding claims.