EP2357308B1 - Lamellae for articulated doors - Google Patents

Description

The present invention relates to slats for a sectional door and a link gate made thereof. Such a gate can be designed, for example, as a roller shutter or as a sectional door and can be used, for example, as a garage door, hall door, blinds, blinds or the like.

A roller door has a so-called tank. This covers in the closed state an opening, such as a garage entrance, a hall access or the like. The Rolltorpanzer consists of a plurality of lamellae, also called lamellar profiles or rods, which are interconnected by joints. The lamellae are usually made of metal, in particular steel or aluminum. They may be single-walled or double-walled, the latter being mostly filled with foam, for example with polyurethane, or with other materials, such as mineral wool, for reasons of stability, thermal insulation or soundproofing. The Rolltorpanzer is usually guided by guide rails and passed when opening on pulleys and wound onto a shaft. The guide rails can for example be mounted vertically to the side of the garage entrance (or other opening). A corresponding tank has lamellae, which are arranged horizontally one above the other and are wound on opening onto the shaft, which can be located in the area of the upper garage ceiling. However, it is also possible that the guide rails are mounted horizontally and thus lead vertically arranged slats. The guide rails also have the task to absorb the forces acting on him with closed roller shutter door, such as by wind load or the like.

A sectional door contains a door leaf with several sections. These are usually also connected by joints. Sectional doors differ from roller doors essentially in that the sections are not rolled up on a shaft. Corresponding guide rails can also run in the area of the garage entrance (or the like) vertically for a ceiling sectional door or horizontally for a side sectional door with a corresponding horizontal or vertical arrangement of the sections.

Slats, also called slat profiles, for a shutter are known, for example, from German Utility Model Application no. 1 895 322 , The special lamellar profiles presented there have curls running along their longitudinal sides, which engage in one another like a cylinder joint. Thus, the shape of the lamellar profiles presented there allows a hinge-like connection without the need for additional hinges or the like.

The publication DE 37 07 454 A1 shows a roller shutter - or a roller door or a rolling window - before, which has a plurality of interconnected horizontal slats, a winding roller for winding and unwinding of the slats and two on both sides of the slats arranged guide rails in which the slats ends are guided. The roller door presented there refers essentially to the guide rails, but also shows lamellae, which have on their longitudinal sides a hook-shaped profile and can be connected to each other.

Also the patent DE 195 23 349 B4 presents a special blade suitable for a roller shutter or the like. Such lamellae also form a hinged connection with each other by hinge parts that can hook into each other in pairs and there consist of connecting legs that protrude from a base body of the lamella, and associated hook parts. In this case, the one type of hook parts on its inside a concave curved joint surface and extends over an angle of about 180 degrees. The other type of hook parts extends in the sense of a convexly rolled screw over an angle of about 360 degrees and additionally has a joint or sliding surface. The local sizes of the hook openings and the associated vertical curvature measures are coordinated so that in each pivot position of the joint directed a direction transverse to the hinge axis unhooking is prevented by a positive engagement behind the concave hook portion behind the convex hook portion. Adjacent lamellae can therefore only be mounted there by an axial telescoping of the joint parts or, conversely, disassembled.

It has been found that it is advantageous to be able to hook in and out of slats of the type mentioned without being able to unhook in an unintentional manner during normal operation.

Therefore, it is the object of the present invention to make a blade for a gate so that a desired hooking and unhooking is possible.

This object is achieved by a lamella according to claim 1.

The blade according to the invention has two joint parts, by means of which such lamellae can be connected in pairs in an articulated manner. Of these, a joint part contains a spiral-like element, also called a spiral in the following. The joint parts are coordinated so that they can be hooked at a certain angle into each other. This is also called "click". In order to enable this, a wall section is provided which extends outward from the lamellar base body and thereby has a substantially constant thickness and a predetermined width. On the side facing away from the base body of the wall portion, the spiral is fixed with one of its ends directly or by further means. The other end of the inward spiral is connected at a vertex with its curvature. Due to the spiral shape, the spiral has a certain width.

It has been found that the stated object is achieved well if the width of the spiral is greater than 1.3 times the wall portion. Has proven particularly useful when the spiral width is 1.5 times the width of the wall section, with tolerances are taken into account. The term "width" here refers to the cross section of the blade and is explained below in connection with the description of a preferred embodiment.

The special arrangement of abutting edges, which in pairs together create a joint between interconnected slats, has various advantages. On the one hand, a joint in the region of the joint is reduced to a minimum. On the other hand, a pivoting of the slats is in the direction of each other the Hauptsichttläche largely avoided. This is particularly important in lamellae whose surface is colored by means of a painting process or a powder coating. For the color impression also depends on the angle of incidence of light in many colors, or also on the viewing angle relative to an observer. As a result, the blade according to the invention, or a gate made therefrom, receives a high-quality visual impression.

It is advantageous for mass production if the second joint part contains a circle-like element with an opening for receiving the spiral. In order to prevent unintentional unhooking of the individual slats with high certainty even in such a case , it is advantageous if the clear opening of the circle-like element is smaller than the width of the spiral.

Furthermore, it is advantageous for manufacturing reasons, the lamellae according to the invention made of aluminum, for example by means of an extrusion process to produce.

In order to give the blade according to the invention a high stability and at the same time to enable a so-called click of the hinge parts, it is further proposed that the above-mentioned wall section has a wall thickness within predefined values.

Fig. 1:

Ein Lamellenpaar

Fig. 2:

Eine Lamelle mit verschiedenen Maßangaben

Fig. 3:

Ein erstes Gelenkteil der Lamelle

Fig. 4:

Ein zweites Gelenkteil der Lamelle.

In the following, the invention will be explained with reference to exemplary embodiments and further advantages will be mentioned. In each case show in cross-sectional representation:

Fig. 1:

A pair of lamellae

Fig. 2:

A lamella with different dimensions

3:

A first joint part of the lamella

4:

A second joint part of the lamella.

In Fig. 1 the profile of a pair of a first blade 10a and a second blade 10b is shown. Both blades 10 are identical in this embodiment. They may be part of a roll-up door, a sectional door or the like, which has a plurality of other slats. These lamellae may for example be arranged vertically to each other and form a gate for a garage, a shutter for a window opening or the like. They can also be arranged horizontally next to each other and thus, for example, be part of a side sectioner. Such an arrangement can be used as a garage door, blind or the like. The arrow A indicates a view from the outside - for example, a garage door - and the arrow a view from the inside. Thus, arrow A points to the main surface of the lamellae 10 or the garage door made therefrom (or the blind or the like) and arrow on the side view area. The geometry drawings used here, such as "top", "bottom", "right", "left", usually refer to the representations in the drawings and not to a possible installation state of the slats. Depending on the application, the lamellae can have a length, that is, extension in drawing plane, up to several meters. They are designed in the preferred embodiment as extruded profiles and made of aluminum.

The fins 10 have a first hinge part 12 and a second hinge part 14. These interlock with each other in the illustrated pair of lamellae and thus form the joint 16. This joint 16 has a joint 18. This is formed from a first abutment edge 20 of the first lamella 10a and a second abutment edge 22 of the second lamella 10b. The first lamella 10a has due to the identical design with lamella 10b on its left side a joint edge, which is identical to the abutting edge 22. The same applies to the right side of the second lamella 10b, where there is a joint edge 20. The joint 18 allows the slats 10a, 10b in their joint to the inside I down - in this illustration down - can be widely pivoted. However, pivoting towards the outside A - up here - is almost impossible.

Fig. 2 shows a single one in Fig. 1 shown lamellae 10. By this illustration, individual dimensions and details of the lamella 10 are described. For this purpose, a number of auxiliary lines are provided, such as in particular the central reference cross 24, the reference crosses 26, more precisely 26a, 26b, 26c (s. Fig. 3 ) and the reference points 28, more precisely 28a, 28b ( Fig. 4 ). For a better clarity of the left part 120 of the lamella 10 in Fig. 3 and the right part 140 in Fig. 4 shown enlarged. The dimensions given for the description of the lamella are for a specific embodiment and may differ within the scope of manufacturing tolerances. It goes without saying that individual or even all dimensions can be modified within the framework of general expert knowledge and ability.

The cross-section of the blade 10 has a width, that is, a horizontal extent a (80 mm). The distance b between the abutting edges 20 and 22 is 65.6 mm. The lamella 10 also has an upper wall 30 and a lower wall 32. The distance between the associated outer sides corresponds to the height of the lamella 10, is denoted by c and is here 18.5 mm. The walls have a nearly equal wall thickness ws, which is 1.2 mm. The lower wall 32 extends to the left almost in an S-shaped curved manner to the upper wall 30. It hits the upper wall at a junction 34, the right side of which has a distance d (14.35 mm) from the second abutting edge 22. To the left of the point 34 is an oblique edge 36, which runs from bottom right to top left. The distance from here to the second abutting edge 22 is e (11.55 mm). To the left of this there is a wall 38 which has a width, ie a horizontal extension wb (8.1 mm) and a nearly constant thickness D1 (2.3 mm). In the left upper area of the wall 38 is the second abutting edge 22. In the lower left area, the wall 38 initially passes into a spiral-like extending part 40, which will also be referred to as a spiral for short. This part 40 has - based on its outer surface - first a radius r1 (9.5 mm) with respect to the reference cross 26c, then a radius r2 (6.2 mm) with respect to the reference cross 26a and finally a radius r3 (4.0 mm) with respect to the reference cross 26b and opens into an almost vertically extending web 42, the at a lower vertex 44 is connected to the spiral 40. The spiral 40 has a width f of 12.29 mm.

The second joint part 14 is based on Fig. 2 and Fig. 4 explained in more detail. It consists essentially of a circle-like element whose inner side has a radius r4 (9.8 mm) with respect to the reference cross 28b in the upper region and a radius r5 (6.6 mm) in the lower region with respect to the reference cross 28a. The inner walls have at the height of the reference crosses 28 a horizontal distance g (13.2 mm). The circle-like element has an opening whose clear width is designated h (10.59 mm). It is especially in Fig. 4 clearly recognizes that the lower vertex 46 of the second joint part 14, or of its circle-like element, is located to the right of the first abutment edge 20, in a horizontal distance i (0.55 mm).

In Fig. 2 In addition, an area 150 is marked. In this, in the preferred embodiment in the cross-sectional representation triangular markings that are produced in the context of extrusion and whose formation is an indication of particular properties of the blade 10, such as model name, manufacturer or the like.

mit K größer als 1,3. Bevorzugt werden Werte für K im Bereich um 1,5, bei einer Toleranz von +/- 0,2.In the case of the lamellae 10, the geometric balance of the first joint part 12 with the second joint part 14 is particularly important. An essential point is the course between the connection point 34 and the abutting edge 22. While the wall thickness ws (1.2 mm) of the walls 30, 32 is approximately the same, the wall thickness D2 (approximately 3 mm; Fig. 3 ) at the point 34 more than twice as much as ws. In the further course (to the left), the wall thickness is reduced by the course of the oblique edge 36 to the value D1 (2.3 mm), which is below the value D2, but more than 1.5 times of ws. The value D1 remains almost constant for the wall 38, which has a width wb (8.1 mm). This value wb is in a certain ratio with the horizontal extent f (12.29 mm) of the spiral 40, ie its width. So applies $$\mathrm{f}=\mathrm{K}\times \mathrm{wb};\mathrm{with\; K\; gr}\ddot{\mathrm{O}}\mathrm{than}\mathrm{1}.\mathrm{Third}$$

with K greater than 1.3. Values for K in the range around 1.5, with a tolerance of +/- 0.2, are preferred.

Another essential point of the embodiment of the invention relates to the position of the abutting edge 22. This is located to the left of the right side of the web 42 and has a distance d (14.35 mm) from the right side of the point 34. To allow a good installation and to achieve a slight joint in the main surface at the joint 18, the abutting edges 20, 22 at a slat width a of 80 mm here have a distance b of 65.6 mm from each other.

The fins 10 according to the described embodiment have various advantages. So it is on the one hand possible that the joint parts 12 and 14 easily attached to each other and also can be solved again from each other. This can be done, for example, in the following way. The first fin 10a (see Fig. 1 ) stays in its horizontal position. The second louver 10b is pivoted downwards and about at an angle of 110 to 120 degrees. Due to the special spiral-like design of the first joint part 12 of the second lamella 10b (or other identical lamella 10) this can be simply brought out by the clear opening h of the second joint part 14 of the first lamella 10a or vice versa. This allows a simple and quick installation of several slats 10 to a roller door for a garage or the like. This makes it possible to transport the individual slats 10 in a compact manner from a production plant to a customer, in which a corresponding garage door to be installed. There, the slats can be joined to the garage door and so the gate can be installed. For this purpose, of course, further means are required, such as guide rails, lock elements, drive units, pulleys, fasteners and the like. However, these are not discussed here in detail because they are not relevant to the invention.

On the other hand, the particular configuration and arrangement of the joint parts 12, 14 allows the lamellae 10 to be permanently connected to one another in the assembled state during normal operation as a garage door or the like. This results in particular from the fact that in normal operation, the slats 10 are pivoted at an angle to each other, even in the range of drive or Deflection pulleys usually not greater than 90 degrees. In addition, since the spiral 40 has a closed course, by the end of which is firmly connected at the apex 44, the first joint part 12 has a high stability. This ensures long term that the geometric interaction between the joint parts 12, 14 is maintained. The robustness of the embodiment is further supported by the particular thickness D1 of the wall 38.

Another significant advantage results from the particular design and arrangement of the two abutting edges 20, 22. If the slats 10 are part of a garage door and this is closed, they have an arrangement with each other as in Fig. 1 indicated. That is, they should not be pivoted to each other. In such an operating state, the joint 18 has only an extremely small joint, which is given by the distance of the edge 20 of the lamella 10 a and the edge 22 of the lamella 10 b. This extremely low joint gives a high-quality impression of the garage door on the main surface (arrow A). In addition, it is ensured that the lamellae 10a, 10b virtually can not be pivoted to the outside A, which could happen, for example, in a wind load or the like. These positive effects are both given when the usually several meters long slats 10 are arranged horizontally one above the other or vertically next to each other.

• Die Lamelle 10 kann eine größere oder eine kleinere Breite a aufweisen.
• Für ein Garagentor, eine Jalousie oder dergleichen können unterschiedliche Lamellen verwendet werden. So ist es insbesondere denkbar, dass aus optischen und/oder aus technischen Gründen die Breiten a der einzelnen Lamellen unterschiedlich sind.
• Die lichte Weite h des zweiten Gelenkteils 14 kann vergrößert oder verkleinert werden, wenn die Radien r1, r2, r3 des spiral-ähnlichen Verlaufs des Gelenkteils 12 angepasst werden.

The embodiment described represents a preferred example. It is understood that within the scope of skill in the art a variety of modifications are possible, such as:

• The lamella 10 may have a greater or a smaller width a.
• For a garage door, a blind or the like different slats can be used. Thus, it is conceivable in particular for optical and / or technical reasons that the widths a of the individual slats are different.
• The clear width h of the second joint part 14 can be increased or decreased, if the radii r1, r2, r3 of the spiral-like course of the joint part 12 are adjusted.

LIST OF REFERENCE NUMBERS

10a, b

First or second lamella

12

First joint part

14

Second joint part

16

joint

18

joint

20

First abutting edge

22

Second abutting edge

24

Central reference cross

26a, b, c

Reference crosses in the first joint part

28a, b

Reference crosses in the second joint part

30

Upper wall

32

Lower wall

34

Joint between upper and lower wall

36

Oblique edge

38

Upper horizontal wall

40

Spiral-like running part or "spiral"

42

Bridge at the end of the spiral

44

Lower vertex at the first joint part

46

Lower vertex on the second joint part

a

Width of the slat 10

b

Distance between abutting edges 20, 22

c

Height of the slat 10

d

Distance connecting point 34 to the abutting edge 22nd

D1

Wall thickness of the wall 38

D2

Thickness of joint 34

e

Distance between oblique edge and abutting edge 22

f

Width of the spiral 40

G

Horizontal distance of the inner walls of the joint part 14

H

Clear opening of the joint part 14

i

Distance lower vertex 46 to abutting edge 20

wb

Width of the wall 38

ws

Wall thickness of the walls 30, 32

r1

First radius of the spiral 40

r2

Second radius of the spiral 40

r3

Third radius of the spiral 40

r4

Upper radius of joint part 14

r5

Lower radius of joint part 14

Claims (10)

1. Lamella (10) with a first joint part (12) at a first lamella end and a second joint part (14) at a second lamella end, wherein the lamella (10) has a first wall (30) and a second wall (32), and the second wall (32) has such a profile that it is connected to the first wall (30) in the region of the first joint part (12) with respect to the cross section of the lamella (10) at a connection point (34), wherein a wall portion (38) with a substantially constant thickness (D1) is present between the connection point (34) and the first lamella end, characterized in that, with respect to the cross section of the lamella (10), an element (40) which has a shape similar to an inwardly extending spiral is fastened to the side of the wall portion (38) which faces away from the connection point (34), and in that the inner end of this spiral-like element (40) is connected with the inner side thereof with respect to the cross section of the lamella (10) at a crown (44).
2. Lamella according to Claim 1, characterized in that the side of the wall portion (38) facing away from the connection point (34) merges into the spiral-like element (40).
3. Lamella according to Claim 1 or 2, characterized in that the width (f) of the spiral-like element (40) has a value which is approximately 1.5 times the width (wb) of the wall portion (38).
4. Lamella according to one of the preceding claims, characterized in that the second joint part (14) comprises a circle-like element which has a clear opening (h) whose value is less than the width (f) of the spiral-like element (40).
5. Lamella according to one of the above claims, characterized in that a first butting edge (20) is present in the region of the second lamella end and a second butting edge (22) is present in the region of the first lamella end, and in that the second butting edge (22) is situated approximately equally close to the first lamella end as, with respect to the cross section of the lamella (10), the crown (44) of the spiral-like element (40).
6. Lamella according to one of the above claims, characterized in that the first wall (30) and the second wall (32) have virtually the same wall thickness (ws), in that the connection point (34) has, with respect to the cross section of the lamella (10), a wall thickness (D2) whose value is equal to or greater than twice the value of the wall thickness (ws), and in that the thickness (D1) of the wall portion (38) has a value which is less than that of the wall thickness (D2) and greater than 1.5 times the value of the wall thickness (ws).
7. Lamella according to one of the preceding claims, characterized in that it is produced from aluminium and preferably by means of an extrusion process.
8. Door, characterized in that two or more lamellae (10) according to one of the above claims are installed in such a way that the first joint part (12) of a first lamella (10b) is mounted in the second joint part (14) of a second lamella (10a).
9. Door according to Claim 8, characterized in that it is designed in such a way that the lamellae (10), and thus the joint parts (12, 14), are arranged substantially above one another.
10. Door according to Claim 8, characterized in that it is designed in such a way that the lamellae (10), and thus the joint parts (12, 14), are arranged substantially next to one another.

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