EP3339560A1 - Lamellae roller gate and safety hook - Google Patents

Abstract

The invention relates to a roller shutter with at least one lamella (2) having a door leaf (1) and with side guides (3) on which the door leaf (1) is displaceably guided. End sections (a) of the lamella (2) enter the side guides (3). The lamella (2) is secured against being pulled out of at least one lateral guide (3) by an injection-molded securing hook (10) engaging behind the lateral guide (3). According to the invention, the injection-molded safety hook (10) is inserted into an end-side recess of the lamella (2) and is connected to the lamella (2) exclusively by at least two fastening elements. The injection-molded safety hook (10) has an integrally molded pin (17) which extends deeper into the blade (2) than the fasteners.

Description

The invention relates to a roller door with a door leaf having at least one lamella and with side guides on which the door leaf is displaceably guided and into which the end regions of the lamella are immersed. In this case, the lamella is secured against pulling out of at least one side guide by a side guide engaging behind injection-safety catch.

In roller shutters in lamellar construction - for example, shutters - the side guides are usually without moving parts, d. h., Realized in particular without roles. Both end areas of each slat are in each case laterally encompassed on three sides by a lateral rail forming a lateral guide, so that the movement of a slat is limited to the vertical along the side rail. An additional degree of freedom of extraction from the rail is eliminated by a mirror-image arranged second rail at the opposite end of the blade. The movement of the door leaf is thus fixed to a linear movement - preferably in the vertical direction.

Due to a certain flexibility of the door leaf blades, however, it can happen in load situations - in particular by wind load or break-open attempts - that the lamellae sag to a point at which the end portion is pulled out of the side guide. This leads to damage to the door leaf as well as uncontrolled and unintentional opening of the passage to be closed by the door leaf.

To secure the slats against pulling out of the side guide locking hooks are known, which is attached to the front side of the slats be and engage the side guide. For attachment to the lamella and for stabilization, the safety hooks are screwed to the lamella. However, this results in a considerable installation effort and it must also be provided on the blade means for receiving and fastening the screw.

Against this background, the invention has for its object to reduce the installation cost of the injection-molded safety hook without reducing the stability and effectiveness of the fuse.

The invention and solution of this problem is a roller door according to claim 1 and a safety hook according to claim 11. Preferred embodiments are specified in the dependent subclaims.

According to the invention, the injection-molded safety hook is inserted into an end-side recess of the lamella and connected exclusively by at least two fastening elements with the lamella-directly or indirectly. Furthermore, the safety hook has an integrally molded pin, which extends deeper into the blade than the fasteners. The pin is preferably made of plastic and is disposed between the fasteners. By the pin additional stabilization is provided, which on the one hand prevents tilting of the safety hook in a tensile load and on the other hand - by internal positive locking - a bending of the blade.

In a preferred embodiment, the pin extends at least twice as deep into the blade as the fasteners. As a result, a particularly good tilt protection for the safety hook and at the same time a particularly good stabilization of the blade is achieved.

In a preferred embodiment, the pin is pointed sharpened at its end. As a result, on the one hand, the insertion of the safety hook is simplified in the associated recess of the blade, since there is a natural insertion bevel. On the other hand, the pin can thereby also be pressed into a deformable or displaceable material in the interior of the lamella. This improves the power transmission to the lamella.

In a particularly preferred embodiment, the lamella is designed as a hollow profile. Hollow profiles can be produced with relatively little material and high bending stiffness. Furthermore, the inner cavity can simultaneously serve to receive the safety hook.

In a particularly preferred embodiment, the lamella designed as a hollow profile is at least partially filled with plastic foam. The pen extends into the plastic foam. Foamed plastic materials - for example PU foam - have a good dimensional stability, low weight and at the same time a good thermal insulation effect. Due to the intermediate foam layer, the pin can be mechanically coupled in the region of the hollow profile with the outer wall of the blade without having to come into direct contact with this. Thus, rattling or impact noise accounts in the case of load. A sharpened pen can also be driven directly into the foam material by the insertion process. For this purpose, no separate receiving recess must be provided before insertion. By a lateral displacement when driving the pin in the plastic foam material, the foam is additionally compressed, resulting in an improved lateral support.

Conveniently, the blade has a plastic cap on the end. This forms a positive receptacle for the safety hook. At the same time, the plastic cap can also form the abutment for the latching connection of the safety hook. At the same time the plastic cap is suitably held in turn with a latching connection to the end portion of the blade. This can be blocked by the insertion of the safety hook, so that a non-destructive separation between the end cap and lamellar body is not possible.

In a preferred embodiment, the door leaf on a plurality of pairs with each other pivotally connected slats. The plurality of individual slats forms the door leaf, which in each case angled along the pivot axes between two adjacent slats and thus can be rolled up.

Conveniently, the gate has a winding shaft on which the door leaf can be rolled up to the opening. During a winding movement, the door leaf shifts along the side guides in the direction of the winding shaft.

In a preferred embodiment of the invention, the fastening elements are designed as latching hooks.

The latching hooks have in the insertion direction on the front side an insertion bevel and on the side facing away from this in the insertion direction on the rear side a holding surface. These latching hooks are connected by an elastically deformable support arm so with the main part of the safety hook that they can be passed when pushed into a narrow side of the blade to an associated abutment of the lamella. Upon reaching the intended insertion depth, the elastic holding arms are relaxed, so that the retaining surfaces with the respective associated abutment engage positively in contact. As a result, the securing hook is in turn secured against being pulled out of the end region of the lamella.

At the same time, the assembly effort is drastically reduced: The pin and the latching hook need only be inserted into an associated recess of the blade and pushed far enough by the effect of force that the latching hooks are positively secured in the blade. An additional locking screw, which in turn must be engaged with an associated internal thread and screwed, deleted entirely.

In an alternative embodiment of the invention, the fastening elements are designed as receptacles for screws and / or rivets.

The invention is also an integrally preferably made of plastic molded injection-security locking hooks for use in a previously described roller door.

Fig. 1

eine perspektivische Darstellung eines erfindungsgemäßen Rolltores im halbgeöffneten Zustand,

Fig. 2

Horizontalschnitt durch das Rolltor gemäß Fig. 1 entlang einer Ebene A-A,

Fig. 3a

den Endbereich einer Torblattlamelle mit einem erfindungsgemäßen Sicherungshaken in teilweise eingeschobenem Zustand

Fig. 3b

Rückansicht der Darstellung aus Fig. 3a mit vollständig eingeschobenem Sicherungshaken und

Fig. 4

eine perspektivische Darstellung eines erfindungsgemäßen Sicherungshakens.

The invention is explained below with reference to only one embodiment illustrative drawings. They show schematically:

Fig. 1

a perspective view of a roll-up door according to the invention in the half-opened state,

Fig. 2

Horizontal section through the roller door according to Fig. 1 along a plane AA,

Fig. 3a

the end region of a Torblattlamelle with a safety hook according to the invention in partially inserted state

Fig. 3b

Rear view of the presentation Fig. 3a with fully inserted safety hook and

Fig. 4

a perspective view of a safety hook according to the invention.

In the Fig. 1 is a roller shutter according to the invention with a in a horizontal transverse direction x and a vertical height direction y extending door leaf 1. The door leaf is formed of a plurality of pairs with each other pivotally connected slats 2, which have their greatest extent in the transverse direction x and on an upper - or lower edge in the vertical direction y are hinged to each other. The existing of the slats 2 door leaf is guided on side guides 3 in the vertical direction and to open the door on the winding shaft of a winding device 4 can be rolled up. For this purpose, this is equipped with an electric motor drive 5.

How to get the Fig. 2 takes an end portion a of the slats 2 immersed in a side rail 3 forming vertical rail. In this case, the vertical rail has an approximately rectangular hollow box 6 and two thereof thereof in the transverse direction x extending leg 7, which surround the end portion a of the slats as a height direction y and the transverse direction x perpendicular thickness direction z. The passage formed between the two legs 7, in which the end portion a is received, opens into the interior of the hollow box 6. The two legs 7 and the hollow box 6 are formed as a bent metal profile. End is on the two legs. 7 in each case a plastic sealing strip 8 attached, which serves as a contact surface for the lamella 2 in the region of a lamellar body 9 likewise formed of a metallic sheet-metal profile. As a result, on the one hand, a thermal separation between the blade body 9 and the elements of the side guide is achieved and on the other hand ensures a smooth and quiet vertical guidance.

According to the invention, a securing hook 10 is inserted into an end-side recess of the lamella 2. With an angled portion 11 of the securing hook 10 engages behind the side guide 3, in which it engages in the interior of the hollow box 6. As a result, the lamella with the securing hooks 11 is secured against being pulled out in the lateral direction from the side guide 3. Expediently remains in the unloaded normal state between the angled portion 11 and the inside of the hollow box 6, a gap b, which is closed only by a tensile stress. Then the safety hook 10 is positively supported in the side guide 3, so that further extraction is no longer possible.

The Fig. 3a shows a detail view of the end portion a of a partially broken blade 2 with a partially partially inserted safety hook 10. At the formed of a folded metal sheet as a hollow profile fin body 9 end a plastic cap is attached, which completely borders the end opening of the blade 2 for insertion of the securing hook 10 , The plastic cap 12 now engages with a centering nose 13 in an associated recess in the plate of the plate body 9. As a result, the plastic cap 12 is held approximately vertically in the vertical direction y on the lamellar body 9. In the thickness direction z, the plastic cap 12 is located with a sleeve-shaped portion 14 on both sides of an inner side of the hollow profile and is supported on this. After one Inserting the plastic cap 12 is secured by a locking connection 15 against pulling in the transverse direction x. This is formed by projections on the sleeve-shaped portion 14, which engage in associated openings in the sheet metal of the laminated body 9. When inserting the sleeve-shaped portion 14 of the plastic cap 12 in the lamellar bodies 9 this is slightly compressed in the thickness direction z, so that the projections are pressed inward and feathers on reaching the position of the openings back to their original position to the outside. In the assembled state, the inside of the sleeve-shaped portion 14 is supported by the securing hook 10, so that a re-compression and a solution of the latching connection is not possible.

The securing hook 10 has in addition to the angled portion 11 two integrally adjoining fasteners in the form of latching hooks (16) and arranged therebetween also made of plastic integrally molded pin 17. Starting from the angled section 11 in the lateral direction x, the pin 17 has a greater length than the two latching hooks 16 so that it extends deeper into the interior of the lamella 2 in the installed state.

The latching hooks 16 are each equipped with a front-side insertion bevel 18 in the insertion direction and a retaining surface 19 arranged on the rearward side facing away from the insertion direction. The thus formed hook-shaped portion is connected in each case by an elastically deformable support arm 20 with the remaining safety hook 10. In an insertion movement in the transverse direction x along the main extension of the pin 17, the latching hooks 16 are compressed when hitting an obstacle in the direction of the pin 17. After overcoming the obstacle, you automatically spring back apart elastically. The holding surface 19 is according to Art a barb so inclined that the latching hooks are pulled apart in a subsequent tensile stress, so that the latching connection reinforced.

For interaction with the latching hooks 16, an abutment 21 is provided within the sleeve-shaped portion 14, which on the one hand interact with the insertion bevel 18 during insertion of the latching hook 10 for compression of the latching hooks 16 and on the other hand a positive contact surface for the retaining surfaces 19 of the securing hook 10th form.

At the latching hooks 16 then 10 contact shoulders 22 are integrally formed on the safety hooks, which are supported in a form-fitting manner with a complete insertion into the plastic cap 2.

In the rear view according to Fig. 3b It can also be seen that the securing hook 10 is provided with stabilizing ribs 23 both in the region of the angled section 11 and in the transition to the pin 17 and the latching hook 16. This is especially by a comparative consideration with the Fig. 4 , which represents the safety hook alone, clearly.

The pin 17 further has a sharpened end 24, with which it is driven into a filling of the disk body 9. By the elongated shape of the pin 17, this is then supported in the insulation over its entire length dipping in this in the height direction y and the thickness direction z and can transmit forces in both directions.

In order to optimally absorb bending forces due to wind loads perpendicular to the door leaf level, the pin 17 has a greater extension in the thickness direction z than in the vertical direction y in cross-section. In this case, the cross section is formed in the embodiment in approximately rectangular with beveled edges. Between the latching hook 16 and the pin 17 in each case a gap 25, which opens into limited by a circular arc segment bulges 26. The diameter of the bulges 26 is greater than the width of the gap 25th

Claims (12)

Roller door with a door leaf (1) having at least one lamella (2) and with side guides (3) on which the door leaf (1) is displaceably guided and in which the end areas (a) of the lamella (2) are immersed, wherein the lamella ( 2) is secured against being pulled out of at least one lateral guide (3) by an injection-molded safety hook (10) engaging behind the lateral guide (3), characterized in that the securing hook (10) is inserted into an end-side recess of the lamella (2) and exclusively is connected by at least two fastening elements with the lamella (2) and that the securing hook (10) has an integrally formed pin (17) which extends deeper into the lamella (2) than the fastening elements. Roller door according to claim 1, characterized in that the pin (17) extends more than twice as deep into the lamella (2) as the fastening elements. Roller door according to claim 1 or 2, characterized in that the pin (17) is pointed sharpened at its end (24). Roller door according to one of claims 1 to 3, characterized in that the lamella (2) is designed as a hollow profile. Roller door according to claim 4, characterized in that the lamella (2) is at least partially filled with a plastic foam and that the pin (17) extends into the plastic foam. Roller door according to one of claims 1 to 5, characterized in that on the blade (2) end a plastic cap (12) is plugged, which forms a positive receptacle for the injection-molded safety hook (10). Roller door according to one of claims 1 to 6, characterized in that the door leaf (1) consists of pairs with each other pivotally connected slats (2). Roller shutter according to claim 7, characterized by a winding shaft (4), on which the slats (2) can be wound to open the door. Roller door according to one of claims 1 to 8, characterized in that the fastening elements are designed as latching hooks (16). Roller door according to one of claims 1 to 8, characterized in that the fastening elements are designed as receptacles for screws and / or rivets. One-piece, preferably made of plastic, shaped injection-molded safety hooks (10) for use in a roller shutter door according to one of claims 1 to 10 with at least two fasteners and a pin (17) for insertion into a front opening of a slat (2) for a roller shutter and with a relative to the extension direction of the pin (17) and the fastening elements angled abutment portion (11), wherein the pin (17) is arranged between the two Befestigunsgelementen and starting from the contact portion (11) has a greater length than the two fastening elements. Safety hook according to claim 11, characterized in that the pin (17) has a length twice as long as the fastening elements.

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