DE19858932B4 - rolling grilles - Google Patents

Abstract

Rolling grille for a building opening,
with several cross bars that span the width of the building opening and are spaced apart by blocks
the block engaging at the ends of two adjacent crossbars in an articulated manner, intermeshing from crossbar to crossbar and secured against lateral displacement and
the crossbars can be wound together with the block around a winding shaft,
characterized in that
the blocks (2, 3) are formed from a square box profile and that within each such profile a welding point is applied to the two associated cross bars (1), which takes over the securing against lateral displacement of the blocks (2, 3).

Description

The invention relates to an improvement on a rolling grille and facilitates its manufacture.

Roller grilles are widely used especially when closing of parking garage and garage entrances.

From the US 20 95 690 is a rolling grille with several, across the width of the building opening, held by blocks at a distance from each other, the blocks at the ends articulated attack on two adjacent cross bars, interlocking from cross bar to cross bar and secured against lateral displacement and the cross bars together with the block can be wound around a winding shaft.

The disadvantage is that for backup against lateral shifting additional Cross struts are used, each ranging from block to block and connected to them. This increases the manufacturing effort considerably.

Even with the rolling grille after the US 36 01 175 To secure against lateral displacement, additional now continuous cross struts are used, which are provided with a snap ring within the block, each consisting of two metal strips. This is not only technologically complex, but also not very easy to maintain, because dust will settle very quickly here.

In the DE-PS 817508 a rolling grille is proposed, in which prepared by slots, grooves or blocks or the like bars of each profile are connected to each other by a spring steel band or steel cable pushed through this opening.

To damage the steel strips or To prevent ropes, a bushing or cuff is placed over them in sections pushed. These bushings or sleeves take over at the same time Distance adjustment between the bars.

Such rolling grilles are heavy and due to the many parts, they are also expensive to manufacture, which are major drawbacks.

The object of the invention is this Defects too avoid and specify a rolling grille with reduced maintenance. Solved this task with the features of claim 1. Advantageous Refinements are the subject of the dependent claims.

The rolling grille according to the invention for a building opening with several, spanning the width of the building opening, cross bars at a distance from the block, the block at the ends articulate on two adjacent crossbars, from Cross bar to cross bar interlock and interlock lateral displacement are secured and with the cross bars together can be wound with the block around a reel shaft characterized in that the block is formed from a square box profile and that there is a weld spot within each such profile the two associated Cross bars applied is to secure the block against lateral displacement.

In an advantageous embodiment each block has one on its front in the upper area Recess on which to insert when the adjacent block is tilted of the welding spot securing against lateral displacement is accessible and that with the rolling grille lowered through the lower area the next higher, neighboring block is covered.

The advantages of the rolling grille according to the invention across from the known solutions consist of that in addition to stability and ease of installation the block chains on both sides when the rolling grille is rolled out convey the shape of a rod. Dust can only get into the block in that area; where the blocks interlock like a hinge, penetrate through narrow slits. The maintenance effort reduces significantly.

In a further embodiment of the invention it is envisaged that the square box profiles of the block on the the back front of the side forming the rolling grille have a longitudinal slot. Thereby Is it possible, to slightly taper the blocks in width at one end and the hinge-like interlocking of the clamps in a simple manner to realize. The hinge-like interlocking of the block is preferred by tapering the block ensures at its roll-up end.

Furthermore, an embodiment according to the invention provides before that the brackets concave on their backs trained and adapted to the winding on the reel shaft so far are. This makes it easier to roll up, and the noise level when rolling up and down drops considerably.

An embodiment of the invention is shown in the drawing. Show it:

1 : a cross section through the rolling grille

2 : a block chain and

3 : a block.

In 1 are on the crossbar 1 arranged block 2 shown. The crossbar 1 is laterally in the area of the entrance in the direction of movement through the profile 7 guided and against pushing out or pulling by means of the head 8th anchored. Because the lateral guidance through the profile 7 is no longer present in the area of the roll-up shaft of the rolling grille, are the cross bars 1 secured against lateral displacement against the block. This is done by the square bar on the cross bar 1 applied welding spot 4 which is the cross section of the crossbar 1 enlarged in this area.

2 shows a block chain consisting of the block 2 . 3 who have favourited Hinged on the Crossbar 1 mesh. The block 2 . 3 have a longitudinal slot on the side forming the rear front of the rolling grille 5 on. That allows the block 2 . 3 each preferred to reduce the width in the upper hinge area, so that block 3 hinge-like over block 2 can grasp. The direction of movement of the rolling grille was marked with B.

In the advantageous block design shown in 3 is back 6 of the square box profile of the block 2 formed concave in the longitudinal direction of the block on the side facing the reel shaft. In an advantageous embodiment, the surface comprises an area between the holes for the cross bars 1 , Also on the block 2 the recess 10 can be seen in the upper area of the square box profile on the front of the rolling grille. This is dimensioned so that it passes through the lower part of the block following upwards 3 is covered when the rolling grille is rolled out. The weld spot becomes through this recess 4 introduced to secure the crossbars against lateral displacement when the row of blocks is tilted relative to the previous row of blocks from the front of the rolling grille.

1

crossbars

2

Kloben

3

Kloben

4

WeldingSpot

5

longitudinal slot

6

back the cock

7

profile

8th

head

9

aufrollseitiges The End

10

recess

B

movement direction

Claims (5)

Roller grille for a building opening, with several cross bars that span the width of the building opening and are held at a distance from the block, the blocks engaging at the ends on two adjacent cross bars in an articulated manner, interlocking from cross bar to cross bar and secured against lateral displacement and the cross bars together can be wound with the block around a winding shaft, characterized in that the block ( 2 . 3 ) are formed from a square box profile and that within each such profile there is a welding spot on the two associated cross bars ( 1 ) is applied to secure the block against lateral displacement of the block ( 2 . 3 ) takes over. Rolling grille according to claim 1, characterized in that each block ( 2 . 3 ) a recess in the upper area at the front ( 10 ) which, in the case of a tilted, adjacent block, for the introduction of the welding spot which secures against lateral displacement ( 4 ) is accessible and which is covered by the lower area of the next higher neighboring block when the rolling grille is lowered. Rolling grille according to claim 1 or 2, characterized in that each block ( 2 . 3 ) on the inside of the building ( 6 ) is slotted. Rolling grille according to one of claims 1 to 3, characterized in that the hinge-like interlocking of the block ( 2 . 3 ) by tapering the block at its end on the roll-up side ( 9 ) is guaranteed. Rolling grille according to one of claims 1 to 4, characterized in that the block ( 2 . 3 ) on the back ( 6 ) are concave and are adapted to the extent of the winding on the reel shaft.