WO1993013289A1

WO1993013289A1 - Roller door

Info

Publication number: WO1993013289A1
Application number: PCT/EP1992/002915
Authority: WO
Inventors: Norbert Lamsfuss
Original assignee: Norbert Lamsfuss
Priority date: 1991-12-23
Filing date: 1992-12-16
Publication date: 1993-07-08
Also published as: DE9217161U1; AU3159093A

Abstract

The invention relates to a roller door with a flexible door sheet (1) which can be rolled around a winding roller (2) fitted to rotate above the door aperture and having a drive system, which is rotatively secured to a drum (6) or a drum (6) on either side on or off which a flexible pulling device (7) running in the opposite direction to the door sheet (1) and fitted with a counterweight (8) to compensate for the weight of the door sheet (1). Vertical sheet guides (11) are provided along the soffits of the door aperture for the door sheet (1) which is stiffened at its lower edge with an engagement bar (9). The purpose of the invention is to provide a roller door sheet (1) using the simplest means and least construction effort which meets the most common operating conditions and is easy to maintain and operate even by untrained people. This purpose is met by a roller door, the flexible door sheet (1) of which is fitted with an engagement bar (9), the width of which is shorter by at least twice to twenty times the thickness of the door (1) than the clear width W1 between the door sheet guides (11), passes through the door sheet (1) and has a weight just sufficient to stiffen the door sheet. The door sheet guides (11), which are widened in a funnel shape at least on one side at their upper ends (11d) are fitted so that their funnel-like upper ends are beneath the lower edge of the door sheet (1) in its fully open position.

Description

rolling gate

The invention relates to a roller door with a flexible door leaf which can be wound onto a drivable winding roller which is rotatably mounted above the door opening. A drum is usually connected in a rotationally fixed manner on both sides to or from which a flexible tension member loaded with a counterweight is wound or unwound in the opposite direction to the door leaf in order to compensate for the weight of the door leaf with a sealing strip. Furthermore, in a generic roller door along the reveals of the door opening, vertical guides are provided for the door leaf and the end strip stiffening the door leaf and connected to its lower end. The drive for opening the gates supported by the weight compensation for the door leaf and its end strip are given a design that ensures quick opening of the gate. Nevertheless, it cannot be ruled out that - for example if the distance between a light barrier initiating the opening command and the door is passed excessively quickly - the door will be hit and damaged.

In order to keep damage from collision to a minimum or to exclude it, it is known (EP 0 405 093 A2, DE 40 07 280 C2) to provide a three-part division of the end strip stiffening and guiding the door leaf, the central part of which is smaller than the clear dimension between the guides for the door leaf has its end strip and is provided at both ends with the end strip extending into the guides into the end parts, either the connections of the end parts to the middle part being designed such that the end parts separate from the middle part, for example at predetermined breaking points, and the middle part in the event of a collision release, or there are the end parts made of a material so high elasticity that they exceed the permitted transverse force with elastic deformation from the guides or emerge from the middle section.

The object of the invention is to create a roller shutter with the simplest means and the least possible construction effort, which we do justice to the most common operating conditions and whose maintenance and handling is simple and can also be carried out by untrained personnel. This task is accomplished by a roller door, the flexible door leaf of which can be wound onto a drivable winding roller that is rotatably mounted above the gate opening, the winding roller is rotatably connected to a drum or on both sides with a drum on or from which oppositely to the door leaf Balancing the weight of the door leaf with a counterweight loaded or unwinding flexible tension member, and which has vertical guides along the reveals of the door opening for the door leaf provided at its lower end with a sealing strip for stiffening, the width of the closing strip being a measure dimensioned at least twice to twenty times the thickness of the door leaf shorter than the clear width between the door leaf guides, guided through the door leaf and of a weight that is sufficient for the door leaf tightening alone, and the door leaf guides with funnel-like expansion at least on one side with the door upper left edge is located below the lower edge of the door leaf in the upper end position.

According to a further feature of the invention, the door leaf can be provided with reinforcements on its side edges with which the door leaf runs in the guides, which reinforcements extend in particular into the clamping area of the end strip. These reinforcements can extend over the entire length of the door leaf, provided that the reinforced area does not result in any significant reinforcement due to the reinforcement, that is to say, it is disruptive when the door leaf is rolled up Thickening compared to the thickness of the door leaf in the non-reinforced area. Thicker reinforcements are possible if the reinforcements do not extend over the entire length of the door leaf but only over a short area on both sides of the end strip, but preferably over the entire width of the door leaf in the region of the connection of the door leaf with its end strip. The reinforcements can be provided on one side or on both sides of the door leaf. They can be provided with reinforcing inserts such as fabric inserts. Furthermore, the reinforcements can be provided as coatings or supports made of low-wear and / or friction-reducing and / or self-lubricating plastic. The supports are connected in a suitable way (welded, adhesive, seam, rivet or screw connection) to the door leaf. Reinforcements made of sliding material, i.e. friction-reducing self-lubricating plastic, prevent the door leaf from being stopped in its guides by friction in its guides and when giving in the inhibition suddenly falls to a greater extent. It is thus counteracted the danger that is given by a door leaf tightening alone by an adapted weight of the end strip of the door leaf.

An embodiment is shown in the drawings.

These show in

Fig. 1 is a front view, in

Fig. 2 is a side view, in

Fig. 2a shows a modification of the embodiment of FIG. 2, in

Fig. 3 is a supervision and in

Fig. 4 shows a section after the one in Fig. 1

Section line IV-IV. 5 shows a detail from FIG. 1, 6 shows a detail from the section according to IV-IV (FIG. 4),

7 shows the detail according to FIG. 6 in the state of a collision beginning,

Fig. 8 shows a section along the section line VIII-VIII in Fig. 5.

Modifications of this embodiment are shown in FIG

9 and 10 and in

11 and 12, with FIGS. 9 and 11 showing a section comparable to the section shown in FIG. 5 and FIGS. 10 and 12 showing a section similar to the section shown in FIG. 6.

As can be seen from FIGS. 1 to 4, the roller door consists of a door leaf 1, which is connected to a winding roller 2 and can be wound thereon and unwound from it. For this purpose, the winding roller 2 is rotatably mounted in bearings 3 and can be driven by a motor 4 via a chain drive 5 in the winding or unwinding direction. With the winding roller 2 is connected via the shaft, a drum 6 is arranged on both sides of the winding roller 2, on or from which a belt 7 is wound or unwound in the opposite direction to the door leaf. Attached to the straps 7 are counterweights 8 to compensate for the weight of the door leaf 1 and a cover strip 9 such that this is sufficient for tightening the door leaf 1 and special devices for tightening the door leaf are unnecessary. On the gate posts 10, which are hollow to guide the counterweights 8 and form the reveals of the gate opening, guides 11 are provided for the door leaf 1, which are formed from a guide slot 11a between guide jaws 11b having them. With its side edges 12, the door leaf 1 engages in the guide slots 11a, which are widened toward the door opening by means of bevels 11c to avoid sharp, cutting edges. The guide slots 11a are in their upper region expanded like a funnel by providing the guide jaws 11b with divergent sections lld.

The end strip 9 of the door leaf 1 has a smaller width B than the door leaf 1 and is one dimension narrower than the light width W _{1 of} the door opening between the guides 11, which are at least twice and up to twenty times the thickness S of the door leaf 1 can, preferably is about 40 mm. Thus, the end strip 9 between de guides 11 has sufficient play to be able to avoid in the event of a collision and elastic deformation of the side edges 12 of the door leaf 1, which can emerge from the guide slots 11a of the guides 1, as shown in FIG. 7 for the beginning Collision in which the door leaf 1 with the end strip 9 is approached, for example in the direction of the arrow, is shown. It is of particular advantage here that the door leaf tightening is achieved solely by the weight of the end strip and special devices for door leaf tightening are unnecessary, which would hinder the evasion of the door leaf with the end strip in the event of a collision. Indeed, the door leaf 1 is completely wound up, the side edges 12 come with their lower edges into a position which is higher than the upper edges of the guides 11 with their funnel-shaped extensions in the sections lld. If the door leaf 1 is now lowered again, the side edges 12, supported by the funnel-like enlargement of the sections 11, automatically reinsert into the guide slot 11a of the guides 11, so that the door is ready for operation again.

It is not necessary to expand the guides 11 in a funnel-like manner on both sides in the sections lld, but it is sufficient - as shown in FIG. 2a - to provide an extension in the section lld only on one side and the opposite Not to bend the guide jaw 11b, but to form it in a straight line and protrude beyond the bent guide jaw 11b. This design has the advantage that a pendulum of the door leaf 1 with the end bar 9 above the funnel-like extension is braked or excluded by the non-kinked, superior guide jaw 11b. After a collision, the door leaf 1 on the side without an extension only needs to be threaded onto the opposite side, which is easily possible.

Depending on the material properties of the door leaf 1, it may be advisable, in particular to improve the sliding behavior of the door leaf 1 in its guides 11, to provide the side edges 12 in whole or in part with reinforcements.

In the modification of the exemplary embodiment according to FIGS. 1 to 8 shown in FIGS. 9 and 10, the side edges 12 of the door leaf 1 are reinforced over their entire length by coatings 13 which are applied to the side edges 12 on both sides. In this exemplary embodiment, melted coatings of small thickness made of particularly wear-resistant plastic with a particularly low coefficient of friction compared to the guide jaws 11b are provided.

In the modification of the exemplary embodiment according to FIGS. 1 to 12 shown in FIGS. 8, the lower edge of the door leaf 1 is provided on both sides with a support 14, which extend over the entire width of the door leaf 1 and thus reinforce the clamping 14a of the door leaf 1 in the end strip 9, for which purpose fabric inserts are provided, which with the on the lower End of the door leaf 1 welded supports 14 are provided as part of the supports 14 or as intermediate layers. In particular, these overlays can also be coated with plastics or made from plastics that have further advantageous properties, such as high wear resistance and low coefficient of friction.

Furthermore, it is within the scope of the invention to provide a short edition 14 in the area of the end strip 9 in combination with coatings 13 of the side edges 12 over the entire length of the door leaf 1.

Claims

1. Rolling door with a flexible door leaf (1) which can be wound onto a drivable winding roller (2) which is rotatably mounted above the door opening, with which one or both sides of a drum (6) is connected in a rotationally fixed manner, on or from which counter to the door leaf (1), a flexible tension member (7) loaded with a counterweight (8) to compensate for the weight of the door leaf (1) is wound up and unwound, and with vertical guides (11) extending along the reveal of the door opening for the at its lower end for stiffening with a cover strip (9) provided door leaf (1), the cover strip (9) in its width (B) by a dimension of at least twice to 20 times the thickness (S) of the door leaf (1) shorter than measure the clear width (W -,) between the door leaf guides (11), pass through the door leaf (1) and have a weight that is sufficient to tighten the door leaf alone, and the upper part of which is funnel-like at least on one side (ll d) extended door leaf guides (11) with the top edge of the funnel below the lower edge of the door leaf located in the upper end position (1).

2. Roller door according to claim 1, characterized in that the door leaf (1) with up to the clamping area of the end strip (9) extending side edge reinforcements (13 _t 14) is provided.

3. Roller door according to claim 2, characterized in that coatings (13) of small thickness are provided as side edge reinforcements, which extend over the entire length of the door leaf (1).

4. Rolltpr according to claim 2, characterized in that as side edge reinforcement short coverings (14) of only over the not to be wound lower edge of the door leaf (1) into the region of the end strip (9) reaching length are provided.

5. Roller door according to claim 4, characterized in that the provided as side edge reinforcements (14) extending over the entire width of the door leaf along the lower edge of the door leaf (1) reinforcements in the clamping area (14a) of the door leaf (1) in the end strip (9) are formed.

6. Roller door according to one of claims 3 to 5, characterized in that coatings (13) or coverings (14) are provided on both sides of the door leaf (1).

7. Roller door according to one or more of claims 2 to 6, characterized in that the door leaf (1) is provided both with coatings (13) and with coverings (14).

8. Roller door according to one of claims 2 to 7, characterized in that the coverings (14) are provided with reinforcing fabric inserts.

9. Rolling door according to one of claims 2 to 8, characterized in that the coating (13) or the coverings (14) consist of plastics of great wear resistance and / or low coefficient of friction and / or with self-lubrication.