ES2775757T3 - Arrangement for moving and locking slats of a slat construction - Google Patents

Abstract

Arrangement for moving and locking slats of a slat construction, containing: - a rotary bearing (1) with a rotary shaft (10), - a shaft (2), rotatably housed coaxially in the rotary bearing (1) , with a first front surface (21), facing the slat (7), and with a second front surface (22), - a connection piece (3), which is fixedly arranged on the first front surface (21 ) of the shaft (2), - a connection element, which is fixedly arranged on the second front surface (22) of the shaft (2), and - means for moving the slat (7), presenting a coupling bar ( 6), by means of which the slat (7) can be moved, the coupling bar (6) presenting a connection with the connection element and with a driving device, which has a driving pin (5) and a passage (43), in the form of an elongated hole, to house and guide the drive pin (5), the passage (43) presenting an end bent at an angle or (α) to block the slat (7) by means of the drive pin (5), characterized in that - the connection element is a lever arm (4), which is arranged with a fixed end (41) without possibility of rotation on the second front surface (22) of the shaft (2), - the passage (43) is arranged in the lever arm (4), - the passage (43) is arranged in such a way as to divide into a vertex ( S) of the angle (α) in a first arm (44) and in a second arm (45) straight, the first arm (44) being arranged, which is oriented towards the fixed end (41) radially with respect to the axis of rotation ( 10), and the second arm (45) being arranged, which is oriented towards a loose end (42) of the lever arm (4) in parallel with respect to the coupling bar (6), when the slat (7) is closed , - the drive pin (5) is arranged in the passage (43) of the lever arm (4) in a meshing manner on the coupling rod (6), and - the coupling rod (6) is guided in a movable manner linearly te along its axis.

Description

DESCRIPTION

Provision for moving and locking slats of a slat construction

The invention relates to an arrangement for moving and locking slats of a slat construction, which are used in particular in building installations.

Slat constructions generally have a plurality of rotatably or pivotally mounted slats, which can be moved back and forth by means of a movement mechanism between a closed state and an open state. Depending on the size or function of the slat construction, it may be necessary to lock them in the closed state. For this reason, it is possible, for example, to decouple the movement mechanism and actuation of the forces that occur when sealing the slat construction with sealing elements, against which the slats must be pressed. Furthermore, with a suitable locking mechanism it is possible to protect the slat construction from the direct effect of wind loads or to effectively prevent forced opening from the outside. For visual reasons and for protection against environmental influences and contamination, the movement mechanism is advantageously arranged within the slat construction. To do this, it is necessary to keep all this arrangement as compact as possible to move and block the slats. In patent document DE 102009005594 B4 an arrangement for moving within the frame of a slat construction and provided with a locking mechanism is disclosed. The arrangement to move consists of several lever arms on both sides of the slats. The lever arms are connected to the slat through two swivel joints and to the frame through two swivel joints. Respectively another rotary joint connects the arrangement to move with a linearly movable drive element on the frame and two of the lever arms. Due to the lengths of the lever arms and the positions of the rotary joints, the slats are tilted and tilted outwards when opening and closing. To lock the slats in the closed state, one of the lever arms has a hooked end which engages a bolt attached to the slat when the slat construction is closed.

The disadvantage of this moveable arrangement is the relatively complex structure with 12 swivel joints per blade. The more joints such an arrangement has, the greater its maintenance effort.

From patent document GB 1396285 A a manually operated moving arrangement for a slat construction is known. The slats each have a short shaft on both sides, through which the axis of rotation of the slats runs.

In order to open and close the slats, the shafts inside the slat construction are rotatably mounted in rotary bearings. In order to couple the rotary movement of the individual slats, the end of one of the shafts is connected on one side of the slats respectively with two coupling rods which can move antiparallel. The coupling rods are movably housed on two pivots oriented axially parallel to the axis of rotation, which are fixed to the respective shaft on both sides of the axis of rotation. A plate with a passage in the shape of an elongated hole is fixed to one of the tie rods between the rotary bearings of two adjacent slats. On the other tie rod, an actuating lever, which can pivot around a pivot point, with a handle is housed in approximately the same position. On the opposite side of the pivot point handle, the operating lever has a driver that engages in the elongated hole-shaped passage of the plate. The driver is a roller rotatably mounted on a bolt. In the case of a pivotal movement of the actuating lever, the coupling rods move antiparallel on the bearing of the actuating lever and on the driver guided inside the passage. The movement is transmitted to the shafts by means of the pivots, whereby all the slats connected to the tie rods move around the axes of rotation.

To lock the slats in the closed state, the passage in the form of an elongated hole running linearly has a bent end. In the closed state of the slat construction, the driver of the operating lever is located there. For locking, the angled end and the driver are positioned relative to the pivot point of the actuating lever so that the driver must pass a reversal point before reaching the angled end, behind which the actuating lever is held in position. the position blocked by a force emanating from the slats. The reversal point is where the driver passes an imaginary connection line with respect to the pivot point of the actuating lever which is oriented perpendicular to the vector of movement of the tie rods. Obviously, the force emanating from the slats is achieved in this case by the back pressure of the elastic sealing elements on which the slats are placed in the closed state. The reversal point can only be overcome by the manually performed pivoting movement of the actuating lever, so that the slat construction cannot be opened from the outside. The lock would also work with a linear running pitch without the angled end. However, with the end angled, the path of the actuation lever required to assume the locked position can be shortened. The disadvantage is that, after exceeding the reversal point, the force acting on the sealing elements in the state closed to decrease again, which can have a disadvantageous effect on the tightness of the slat construction.

Depending on the size of the slat construction, it can furthermore be disadvantageous that only one arrangement to move is present to lock the slats engaged through the tie rods. Sealing the entire slat construction with the elastic sealing elements requires a certain contact pressure. A resulting resistance to movement can cause very high mechanical stress for the individual arrangement.

With the implemented principle of the arrangement to move, 5 rotary joints per blade are required to transmit the rotary movement, higher tolerances can be assumed in the mobile connection between the tie rods and the pivots, which additionally hinder a secure sealing of the construction of slats.

The invention is based on the object of creating a possibility for an arrangement for moving and locking slats of a slat construction which is low maintenance and consists of the fewest possible number of individual parts built in a simple manner.

The objective is achieved by an arrangement for moving and locking slats of a slat construction containing

• a rotating bearing with a rotating shaft,

• a shaft rotatably housed coaxially in the rotating bearing, with a first front surface pointing towards the blade and a second front surface,

• a connecting piece that is fixedly arranged on the first front surface of the shaft,

• a connecting element that is fixedly arranged on the second front surface of the shaft and

• means for moving the slat, which has a coupling bar, by means of which the slat can be moved, the coupling bar having a connection with the connecting element and with a drag device, which has a drag pin and a passage in the form of an elongated hole to house and guide the drive pin, the passage having an end bent at an angle to lock the slat by means of the drive pin, where

• the connecting element is a lever arm, which is arranged with a fixed end without the possibility of rotation on the second front surface of the shaft,

• the passage is arranged on the lever arm,

• the drive pin is arranged in the passage of the lever arm in a meshing manner on the tie rod, and the tie rod is linearly movably guided along its axis,

• the passage is arranged such that it divides at a vertex of the angle into a first straight arm and a second straight arm, the first arm being arranged pointing towards the fixed end in a radial direction with respect to the axis of rotation and the second being oriented arm pointing towards a loose end of the lever arm parallel to the axis of the tie rod whenever the trailing pin moves between the upper end position and the apex of the angle. Advantageous configurations appear from the dependent claims.

The invention will be explained in more detail below using exemplary embodiments. In the attached drawings they show:

fig. 1 a basic structure of an arrangement for moving and locking slats of a slat construction, fig. 2 a basic layout structure in a different view and

fig. 3 a basic layout structure in a view without rendering the frame.

According to fig. 1, the arrangement for moving and locking slats of a slat construction comprises a rotary bearing 1 with a rotary axis 10. The pivot bearing 10 is in the form of a cylindrical sleeve which is fixed in a frame 11 (shown only as a fragment in the figures) of the slat construction not shown, which forms a support structure for the entire slat construction.

A shaft 2 is housed in the rotary bearing 1, which is rotatably positioned around the axis of rotation 10. The shaft 2 has a first front surface 21 and a second front surface 22. The first front surface 21 faces a slat. 7 (indicated by a dotted line in the figures) of the slat construction. On the first front surface 21 a connection piece 3 is arranged without the possibility of rotation. The connection piece 3 is a parallelepiped-shaped body with which a connection can be produced in positive connection and in force-drag connection to the slat 7. The second front surface 22 of the shaft 2 has a profile extension 23 arranged coaxially to establish a connection in positive connection and in force-drag connection to a connection element.

On the second front surface 22 the connecting element is housed on the shaft 2. The connecting element is a lever arm 4 of a flat strip-shaped material, with a fixed end 41 and a loose end 42. With the end fixed 41, the lever arm 4 is in flat contact against the second front surface 22 and is arranged connected to the shaft 2 without the possibility of rotation through a connection in positive connection with respect to the profile extension 23.

At the loose end 42 a passage 43 in the form of an elongated hole is arranged which penetrates the lever arm 4 in the direction of the axis of rotation 10. The passage 43 has a constant width b. In the course of the elongated hole, the passage 43 is angled at an angle a. At a vertex S of angle a, the passage 43 is divided into respectively a first straight arm 44 and a second straight arm 45. The first arm 44 pointing from the vertex S to the fixed end 41 is arranged in a radial direction with respect to the axis of turn 10.

The second arm 45 pointing from the vertex S towards the loose end 42 is arranged in the course of a through-passage towards the axis of rotation 10, being arranged leaving the radial direction in a clockwise direction, corresponding to the representation in the fig. 1, with angle a.

Engaged in passage 43, a cylindrical drive pin 5 is arranged axially parallel to the axis of rotation 10. It has a diameter slightly smaller than the width b of passage 43, so that it can move with little play in passage 43 in elongated hole shape.

The drive pivot 5 is firmly connected to a drive pivot bracket 51. The drive pivot bracket 51 is a parallelepiped shaped body that is adjustably attached to a tie rod 6.

The tie rod 6 is arranged with its axis along the frame 11, orthogonal to the axis of rotation 10 and at an axial distance from the axis of rotation 10. The tie rod 6 has a circular cross-section and is positioned in a linearly movable in two slide bearings 61 along its axis. The slide bearings 61 are arranged along the tie rod 6, symmetrically on both sides of the rotary bearing 1 and are firmly connected to the frame 11.

The drive pivot support 51, which carries the drive pivot 5, is housed between the sliding bearings on the tie rod 6. For this, the drive pivot support 51 has a through hole with which it is pushed on the tie rod 6. The attachment of the drive pivot bracket 51 to the tie rod 6 is removable and is done by means of threaded pins 52 screwed radially with respect to the tie rod.

To perform a controlled movement of the slat 7 between an open and a closed and locked state, the tie rod 6 is connected to a linear drive 8. Suitable linear drives 8 are known from the state of the art and are not explained further. in this case. With the linear drive 8, the tie rod 6 moves linearly in the slide bearings 61.

In Figures 1 to 3 the arrangement is shown in a vertically oriented slat construction (not shown) which is in the closed and locked state. In the closed state, the coupling rod 6 is in an upper end position O. In the upper end position O, the drive pin 5 is arranged above an imaginary horizontal H via the axis of rotation 10 of the rotary bearing 1 and is inside the second arm 45.

Taking into account the forces required to move the slat 7 and the specification of being able to integrate the arrangement into the frame 11 of the slat construction in such a way as to save as much space as possible, the axial distance between the axis of rotation 10 and the bar coupling 6, and thus also lever arm 4, is kept as short as possible. In the closed state, the lever arm 4 adopts approximately an angle of 45 ° with respect to the imaginary horizontal H.

The angle a and a radius r of the vertex S with respect to the axis of rotation 10 are coordinated with each other. In the embodiment shown in the figures, the value of the radius r = 45 mm and that of the angle a = 45 °. In the size range of angle a from> 0 ° to <90 °, other values for radius r and angle a are also possible, making sense with the aforementioned specifications and the usual opening angles of slats of a construction of slats only angles a in the size range between 30 ° and 60 °. The values for the angle a must always be selected such that the second arm 45 runs parallel to the tie rod 6 in the closed state. Throughout this course, the slat 7 is locked against opening from the outside.

In an attempt to twist the slat 7 by an application of external force, the force is transmitted from the shaft 2 through the lever arm 4 to the drive pin 5. A moment acting on the drive pin 5 is oriented almost orthogonally relative to the course of the tie rod 6 due to the orientation of the second arm 45. The introduced force is transmitted radially to the slide bearing 61 through the trailing pivot bracket 51 and the tie rod 6 and is deflected towards the frame 11. A percentage of the force that acts on the tie rod 6 in the axial direction is negligible, if any, so that it is not possible to transmit the force acting on the slat 7 from outside to the tie rod 6. For this reason, the linear drive 8 connected to the tie rod 6 does not require high holding forces and, correspondingly, can be designed to be small and cost saving.

During the controlled movement to open the slat 7, the tie rod 6 moves downwardly from the upper end position O. After the tie rod 6, the drive pin 5 moves down into the second arm 45. The Movement in the second straight arm 45 is carried out without overcoming a force, such as that generated, for example, by the slats 7 at the point of inversion known from the state of the art. Since the second arm 45 runs parallel to the tie rod 6, the movement within the second arm 45 initially does not cause any movement of the slat 7. If the drive pin 5, as represented in FIG. 3, reaches the first arm 44 at the vertex S, the movement of the drive pin 5 is continued towards the passage 43 in the first arm 44. Due to the angle a with which the second arm 45 deviates from the radial course of the first arm 44, the drive pin 5 hits the wall of the passage 43 in the first arm 44. Therefore, the lever arm 4 moves with the drive pin 5, so that the shaft 2 moves around the axis of rotation 10 in a rotating movement and the slat 7 opens.

The controlled movement of the slat 7 can be continued to a lower end position U of the tie rod 6. In the lower end position U, the slat 7 is in the open state. The positions of the upper and lower end position O and U depend on the desired positions of the slat 7 in the open and closed state and are determined by the configuration of the linear drive 8.

It is possible for the drive pin 5 to pass the imaginary horizontal H to reach the lower end position U. When passing the horizontal line H, the drive pin 5 approaches tangentially to the axis of rotation 10. For this reason, a distance between the axis of rotation 10 and the end of the first arm 44 are always chosen so that the first arm 44 does not limit the tangential approach.

In FIGS. 1 to 3 only one arrangement for moving and locking a slat 7 is shown respectively. It should be clarified in this case that, in a slat construction with a plurality of slats 7, each slat 7 is connected to the tie rod 6 with respectively a lever arm 4, a trailing pivot support 51 and a trailing pivot 5. For the linearly movable mounting of the coupling rod 6, several sliding bearings 61 are provided. The number of sliding bearings 61 corresponds to At least to the number of slats 7, the slide bearings 61 being arranged symmetrically between the rotary bearings 10 of the slats 7. All the slats 7 of the slat construction move together through the driven coupling rod 6.

A further design for a slat construction with a plurality of slats 7 is that each slat 7 is provided on each side with an arrangement to move and lock according to figures 1 to 3. The two tie rods 6 are then deflected in the lower or upper zone of the slat construction and move through a single horizontally arranged linear drive.

In the case of a slat construction with several slats 7, the advantages of the removable fastening of the drive pivot bracket 51 to the tie rod 6 take effect, by means of which an independent adjustment of the individual slats 7 is ensured .

List of references

1 Swivel bearing

10 Rotation axis

11 Frame

2 Tree

21 First front surface

22 Second front surface

23 Profile extension

3 Connecting piece

4 Lever arm

41 Fixed end

42 Loose end

43 Step

44 First arm

45 Second arm

5 Drag pivot

51 Trailing pivot bracket

52 Threaded pin

6 Tie rod

61 Sleeve bearing

7 Strip

8 Linear drive

H Horizontal

O Upper end position

S Vertex of angle

U Lower end position

at angle

a Distance between the axis of rotation and the first arm b Width

r Radius of the vertex with respect to the axis of rotation

Claims (10)

1. Arrangement for moving and locking slats of a slat construction, containing: - a rotary bearing (1) with a rotary shaft (10), - a shaft (2), rotatably housed coaxially in the rotating bearing (1), with a first front surface (21), facing the slat (7), and with a second front surface (22), - a connection piece (3), which is fixedly arranged on the first front surface (21) of the shaft (2), - a connection element, which is fixedly arranged on the second front surface (22) of the shaft (2), and - means for moving the slat (7), presenting a coupling bar (6), by means of which the slat (7) can be moved, the coupling bar (6) presenting a connection with the connecting element and with a drive device, which has a drive pin (5) and a passage (43), in the form of an elongated hole, to house and guide the drive pin (5), presenting the passage ( 43) an end bent at an angle (a) to block the slat (7) by means of the drive pin (5), characterized by what - the connection element is a lever arm (4), which is arranged with a fixed end (41) without the possibility of turning on the second front surface (22) of the shaft (2), - the passage (43) is arranged in the lever arm (4), - the passage (43) is arranged so that it divides at a vertex (S) of the angle (a) in a first arm (44) and in a second arm (45) straight, the first arm (44) being arranged, which is oriented towards the fixed end (41) radially with respect to the axis of rotation (10), and the second arm (45) being arranged, which is oriented towards a loose end (42) of the lever arm (4) in parallel with respect to to the coupling bar (6), when the slat (7) is closed, - the drive pin (5) is arranged in the passage (43) of the lever arm (4) in a meshing manner on the coupling rod (6), and - the coupling bar (6) is guided in a linearly movable manner along its axis. Arrangement according to claim 1, characterized in that the angle (a) has a value in the range> 0 ° and <90 °. Arrangement according to claim 1, characterized in that the angle (a) has a value in the range between 30 ° and 60 °. Arrangement according to claim 1, characterized in that a radius (r) between the vertex (S) and the axis of rotation (10) is greater than a minimum distance between the drive pin (5) and the axis of rotation ( 10). Arrangement according to claim 1, characterized in that a distance between the axis of rotation (10) and the first arm (44) is less than the minimum distance between the drive pin (5) and the axis of rotation (10) . Arrangement according to claim 1, characterized in that a trailing pin support (51), for adjustable fixing of the trailing pin (5) to the tie rod (6), is arranged between the tie rod (6 ) and the drive pin (5). Arrangement according to claim 1, characterized in that plain bearings (61), for linear guidance of the coupling rod (6), are arranged in each case symmetrically relative to the rotary bearings (1). Arrangement according to claim 1, characterized in that , in the case of a slat construction with several slats (7), each slat (7) is arranged in contact with the coupling rod (6), in each case through of a lever arm (4) and a drive pin (5). Arrangement according to claim 1, characterized in that , in the case of a slat construction with several slats (7), each slat (7) is arranged in contact with a coupling bar (6), both on the left side as on the right side, in each case through a lever arm (4) and a drive pin (5). Arrangement according to claim 9, characterized in that the two tie rods (6) are in contact via angular deflections with a horizontally arranged linear drive, so that both tie rods (6) can move simultaneously between their positions ends (O and U) through a linear drive.