DE29822740U1 - Rolling grille - Google Patents

Description

Rolling grille

The invention relates to an improvement in a rolling grille.

Rolling grilles are widely used, especially for closing parking garage and car park entrances.

Rolling grilles of the known type consist of U-shaped steel profile blocks arranged one above the other at the height of the rolling grille and interlocking like hinges. Depending on the width of the entrance to be closed, several such block chains are arranged at a lateral distance from each other. The connecting element for the block chains and at the same time the hinge axis for the interlocking blocks are cross bars that are guided laterally in the area of the entrance in the direction of movement of the rolling grille and are anchored to prevent them from being pushed out or pulled out.

A lateral shifting of the clamps on the cross bars and the cross bars in the roll-up area, where there is no longer any lateral guidance, is prevented by an enlargement of the cross bars within selected U-steel clamps during assembly. This enlargement of the cross bar is achieved in the simplest way by applying a welding point within the U-steel clamp to the cross bar, which is easily accessible through the open U-profile.

The disadvantage of this type of roller grille design is that the U-shaped brackets become full of dust. This increases the maintenance effort. The front and back of the roller grille also differ significantly in their appearance. While the front has a bar-shaped bracket chain, the individual brackets are clearly visible on the back.

The object of the invention is to avoid these deficiencies. This object is achieved with the characterizing features of claim 1, advantageous embodiments are the subject of the subclaims.

In the rolling grille according to the invention, the brackets, which are mounted on crossbars at a distance from one another at the height of the rolling grille and interlock with one another like a hinge, and are mounted on crossbars at a distance from one another at the width of the rolling grille, each consist of a square box profile, and the securing of the crossbars against lateral displacement is arranged within the square box profile of the brackets.

In a preferred embodiment, the securing of the cross bars against lateral displacement is also carried out by means of an applied welding point, which increases the cross section of the cross bars within the square box profile.

The advantages of the rolling grille according to the invention compared to the known solutions are that, while maintaining stability and ease of assembly, the bracket chains give the rolling grille the shape of a bar on both sides when it is rolled out. Dust can only penetrate the brackets through narrow slots in the area where the brackets interlock like hinges. The maintenance effort is significantly reduced.

In a further embodiment of the invention, it is provided that the square box profiles of the brackets have a longitudinal slot on the side that forms the rear of the rolling grille. This makes it possible to slightly taper the width of the brackets at one end and to easily achieve the hinge-like interlocking of the brackets that are located one above the other at the height of the rolling grille - while retaining the advantages of the square box profile. The taper preferably takes place in the upper bracket area.

In a further advantageous embodiment of the invention, the surface of the square box profile of the clamps that faces the rolling-up shaft of the rolling grille is concave in the longitudinal direction of the clamp. This makes rolling up easier and the noise level when rolling up and down is reduced considerably.

According to the invention, it is also provided that the brackets in their further design have a recess in the upper area of the square box profile on the front of the rolling grille, which is dimensioned such that the recess of one bracket is covered by the lower part of the following bracket that follows upwards when the rolling grille is rolled out.

To produce the rolling grille, in which the assembly of the prefabricated parts takes place essentially on a flat surface, the invention provides that the securing of the cross bars against lateral displacement when a row of pistons is tilted relative to the previous row of pistons is carried out through the recess from the front of the rolling grille.

An embodiment of the invention is shown in the drawing.

Fig. 1 a cross section through the rolling grille
Fig. 2 a chain and
Fig. 3 a clamp.

Fig. 1 shows blocks 2 arranged on the crossbar 1. The crossbar 1 is guided laterally in the area of the entrance in the direction of movement through the profile 7 and is anchored against being pushed out or pulled out by means of the head 8. Since the lateral guidance through the profile 7 in the area of the rolling-up shaft of the rolling grille is no longer present, the crossbars 1 are secured against lateral displacement relative to the blocks. This is achieved by the welding point 4 applied to the crossbar 1 in the square profile, which increases the cross section of the crossbar 1 in this area.

Fig. 2 shows a chain of blocks consisting of blocks 2, 3, which interlock in a hinge-like manner on the crossbar 1. The blocks 2, 3 have a longitudinal slot 5 on the side that forms the rear of the rolling grille. This makes it possible to reduce the width of the blocks 2, 3, preferably in the upper hinge area, so that block 3 can hinge over block 2. The direction of movement of the rolling grille is marked with B.

In the advantageous block design shown in Fig. 3, the surface 6 of the square box profile of the block 2 is concave on the side facing the winding shaft in the longitudinal direction of the block. In an advantageous design, the surface 6 covers an area between the holes for the cross bars 1. Furthermore, the recess 10 in the upper area of the square box profile on the front of the roller grille can be seen on the block 2. This is dimensioned in such a way that it is covered by the lower part of the block 3 that follows upwards when the roller grille is rolled out.

In this recess, the welding point 4 is inserted to secure the cross-bar by moving it sideways when the row of brackets is tilted relative to the previous row of brackets from the front of the rolling grille.

List of reference symbols

1 cross bars

2 clamps 3 clamps

4 welding point

5 Longitudinal slot

6 times on the clamp

7 Profile 8 Head

9 upper area

10 Recess

B Direction of movement

Claims (7)

Protection claims 1. Rolling grille, consisting of blocks that are mounted on crossbars that are arranged one above the other at the height of the rolling grille and interlock with one another like a hinge, and that are mounted on crossbars at a distance from one another at the width of the rolling grille, the crossbars being secured against lateral displacement relative to the blocks, characterized in that the blocks (2,3) consist of a square box profile and the securing of the cross bars (1) against lateral displacement is located within the square box profile of the blocks (2,3) 2. Rolling grille according to claim 1, characterized in that the securing of the cross bars (1) against lateral displacement is carried out as an applied welding point (4). 3. Rolling grille according to claim 1 or 1 and 2, characterized in that the square box profile of the brackets (2,3) has a longitudinal slot (5) on the side forming the rear of the rolling grille. 4. Rolling grille according to claim 3, characterized in that the width of the clamp is preferably tapered in the upper area (9) so that clamps arranged one above the other at the height of the rolling grille can engage with one another like a hinge. 5. Rolling grille according to claim 1 or 1 and 2, characterized in that the surface (6) of the square box profile of the clamps (2,3) on the side facing the winding shaft is concave in the longitudinal direction of the clamp. 6. Rolling grille according to claim 5, characterized in that the surface (6) comprises an area between the holes for the cross bars (1). 7. Rolling grille according to claim 1, characterized in that the blocks (2,3) have a recess (10) in the upper area of the square box profile on the front side of the rolling grille, which is dimensioned such that the recess (10) of the block (2) is covered by the lower part of the block (3) following upwards when the rolling grille is rolled out.