DE385778C - Connecting link for roller shutter - Google Patents

Description

The known connecting links for roller shutters either result in too much lateral play of the individual bars and thereby corners and jamming or their individual interchangeability is not possible, so that repairs are very difficult. In a known articulated connection for roller shutters, the T-shaped tab of one link is held in a slot in the adjacent link. Here, however, the bars are loosely lined up so that they have no lateral support and therefore the roller shutter can easily corner. \

The invention now creates a connecting member for roller shutters which results in the fixed guidance of the bars without lateral play, but also allows each one to be replaced individual member allowed. The new connects \ dung member consists of a flat overall 'slit plate which form an un- two! hook-shaped extension with arms of equal length and one on one side at the other end ^; seated slot in which the approach of the neighboring plate is stuck, all of which are screwed to the roller shutter slats. By, the offset position of the slot to the approach and by such an attachment of the connecting links in the two chains that in; the one the play of the slot is opposite to that in the other, the rods are held without lateral play and j accordingly the replacement of each individual link is easily possible.

The drawing shows an exemplary embodiment of the invention.

In Fig. Ι and 2 are two j

corresponding links of a double chain;

shown in view. \

Fig. 3 shows a side view of a chain j

limb. ■

Fig. 4 shows a side view of two Inj

joined links. \

Fig. 5 shows a partial view of a roll j

loading with chain links according to fig. 1 to 4.!

Fig. 6 shows a vertical section through

the roller shutter according to Fig. 5. *

The individual links of the chain are made \

- from sheet metal plate 1, all following the same | Shape are cut. Each link has a hook-shaped head end, the vertical web of which is outside the central axis of the link 1 | and his right arm 2 ^{2 a} little longer '

is than the left arm 2 ¹ or vice versa. At the foot of the plate 1, a horizontal slot 3 is provided, the length of which is slightly greater than that of the vertical web i ¹ , but less than the length of the horizontal arm 2 ¹ and 2 ^{2 of} the head end.

The attachment of the links 1 takes place in the following manner. The longer arm 2 ² is first inserted into the slot 3 of the next following link, then the shorter arm is pushed in until the two arms 2 ¹ and 2 ² are fastened in the slot of the adjacent link. When attaching the links to the slats of the roller shutter, the ends of the links are appropriately bent so that they conform to the rolling up.

When the plates 1 are arranged in pairs, the longer arms 2 ^{2 are directed} to the right on one side and to the left on the other side, in this way the lateral play of the slats is reduced to such a small degree that the rolling up and down of the Loading can still be done without difficulty. The vertical play of the slats is ^{limited by the length of the web i 1} and the width of the slot 3. If a chip breaks, it is easy to repair. The damaged tile can be exchanged for a new tile, which is connected to the neighboring tiles and attached to the corresponding lath.

The dimensions of the head end and the slot in the foot end can be different. The novelty consists essentially in the unequal length of the horizontal arms of the Head end as well as the fact that the same plates are used on the same side of the roller shutter so that one plate can be attached directly to the next plate. This type of fastening of the plate can also be used for other chain links than for roller shutters be applied.

Claims (1)

Patent claim: Connecting link for roller shutters made of a flat, slotted plate with a hook-shaped head end, characterized in that the hook-shaped head end (i ¹ ) has two oppositely directed arms (2 ¹ , 2 ² ) of unequal length, the ends of which are equidistant over the ends of the in the foot end of the plate ( 1) arranged horizontal slot (3) protrude laterally. 1 sheet of drawings.