EP0839987B1 - Use of a hook for a fly screen - Google Patents

Abstract

A novel hook comprises two limbs for elastic fly screens or similar. The two parts of the hook (1, 2) include one to be adhered flat on a plane surface, the other is angled away, forming an acute angle. Preferably one limb is angular or pointed, and is adhered to the surface, the other is flat with a rounded end.

Description

The invention relates to the use of a hook for fly screens.

Fly screens are known and are used at building openings such as Window frames etc. attached with mushroom tapes. In the case of elastic fly screens, this can be done using Hooks or pins can be attached with screws or nails. The disadvantage is both that damage occurs to the window frame as well as to the sensitive fly screen can. There is also an attachment to window frames made of metal or plastic difficult or not possible, while with plaster base or masonry dowels or the like are necessary. Also with so-called mushroom tapes for attaching fly screens there are disadvantages, e.g. quick removal is not possible during certain windows e.g. Skylights that are equipped in this way are no longer complete can be opened. From DE-A-4104818 a device is known with which e.g. an insect screen can be attached to an elongated window Clamping device on a plastic strip in a complex arrangement.

Another disadvantage of many of the known fastenings is that the fly screen is not close enough to the frame that insects can overcome the Hindemis.

The object of the invention was to remedy this.

a) zwei aneinander angrenzende, die beiden Schenkel (1, 2) bildende Bereiche, von denen

b) der erste Schenkel (1) flach und auf einem ebenen Untergrund verklebbar ausgestaltet ist, während

c) der zweite Schenkel (2) von dem flachen, ersten Schenkel (1) derart abgewinkelt ist, daß er von der Seite gesehen angrenzend an den ersten Schenkel (1) mit diesem einen spitzen Winkel bildet.

Accordingly, the invention relates to the use of a hook as characterized in more detail in the claims, in particular characterized by

a) two adjacent areas forming the two legs (1, 2), of which

b) the first leg (1) is flat and can be glued to a flat surface, while

c) the second leg (2) is angled from the flat, first leg (1) such that it forms an acute angle with the first leg (1) when viewed from the side.

A hook in which the first leg (1) is angular or angular with an is advantageous pointed end (4) is formed.

A hook in which the second leg (2) is flat is also advantageous is and has rounded corners.

Another advantage is a hook in which the acute angle 5 - 89 °, in particular Is 30-45 °.

Another advantage is a hook, which is in the form of an angled plate.

The invention relates to the use of a hook described above for reversibly attaching an elastic fly screen or the like in the one at the 4 corners of a window or door frame Stick hooks in such a way that their second, angled legs diagonally show outside so that the hem of a fly screen can be stretched over it.

With such a use, it is preferred that a fly screen is used, which is elastic overall and / or whose hem is elastic.

It is further preferred in such a use that the first leg equipped with a self-adhesive film that removes the pull is.

It is further preferred in such a use that a handle a self-adhesive film that detaches from the pull protrudes over the first leg.

It is further preferred in such a use that the handle behind protrudes the second leg hidden.

The elasticity of the mosquito net can be increased by an elastic band at the edge of the net or caused by the inherent material properties of the net become. In the latter case, e.g. trade nylon.

Suitable fly screens are in particular the following tulle qualities:

Suitable materials for the hooks are e.g. plastic (transparent or opaque): polyolefins, such as PE, PP, PS, ABS; Polyester; Polyamides; PMMA, polycarbonate; PVC or Formica, but also wood, raw and all lacquered / glazed types, glass, metal or anodized.

The angled plate shape is particularly advantageous for the hooks. This hook shape minimizes the distance between the wall and the net edge. A minimum distance between the edge of the net and the wall is an essential requirement for an optimal protective function of the fly screen. This shape of the hook also results automatic nestling in combination with an elastic fly screen of the net on the wall.

An acute angle is necessary, especially between ≥ 5 ° and <90 °. After An angle range of 30 ° - 45 ° has proven to be optimal in practical tests. In In this angular range, an elastic mosquito screen can easily become independent nestle against the ground. But it is also advantageous to use the angled one to design the second leg in the form of an arc or a circle, as shown in FIG. 3 with (2), so that the acute angle is formed here by the flat first leg (1) and an imaginary tangent to the arcuate or circular second leg (2).

The basic shape of the hook is advantageously adapted to the tesa poster strips. The The adhesive properties of the tesa poster strip are special for such bonds suitable, namely rough adhesive grounds, such as Woodchip. And the intended load limit of up to 300 g is also for such a bond sufficient.

The hooks can be glued in the usual way, in particular with double-sided adhesive tapes, such as foam fixes, film fixes or even strapless systems, but only fully develop their qualities when on the move detackifying adhesive films, as described in DE 33 31 016 C2, but also in US 4,024,312, WO 92/11332, WO 92/11333, DE 42 22 849 A1, WO 95/06691, DE 44 28 587 A1 and DE 44 31 914 A1.

Even hooks with such self-adhesive films that are detachable on tension are already present known from DE 42 33 872 A1 and WO 94/21157, such hooks, however, for Fly screens are not suitable.

Finally, the hooks can also be glued with the technology according to DE 43 39 604 A1, if only for a sufficient load possibility is taken care of.

Reference is made to all of these publications with regard to the self-adhesive film which can be used taken, those according to DE 33 31 016 C2 particularly preferred and as tesa Power Strips or tesa Poster Strips are commercially available. Especially the latter with Molded tips are particularly suitable, the shape of the hook being preferred is adapted to this tapered shape of a poster strip.

The shaped tip promotes a residue-free and gentle removal the poster strip, even from sensitive surfaces such as Woodchip wallpaper, and this size is advantageous for gluing in the window frame area.

In the simplest case of attachment, there are 4 hooks on the 4 corners of a window frame glued. The elastic fly screen can then be stretched over the hooks become. Due to the hook shape and the elasticity of the fly screen comes it clings to the underground.

Larger dimensions of a fly screen can be centered on each side of the Window frame, another 4 hooks can be used to guide the net edge, if necessary also only one hook on the long sides e.g. a door.

Finally, hooks in the color of the installed fly screen enable one almost invisible fastening behind the taut fly screen.

In the following, the invention will be explained using examples, without it but want to limit unnecessarily.

example 1

The basis is a piece of aluminum sheet 40 mm long, 20 mm wide and 1.5 mm Thickness. At one end both corners are rounded (punched). The end with the Rounded corners are over an imaginary line, at a distance of 15 mm from this End bent up by an angle of 40 ° (this line is labeled A in FIG. 2 and dotted). The remaining area of 25 mm in length remains flat and is attached to a window frame 6 by means of an adhesive film strip 5 which removes the pull glued, with the end (the one pointing away from the bent part) in its last, 20 mm long part is punched to a point (approximately as in Fig. 2 in principle shown and designated 4). A handle 7 with pieces of film covering the adhesive 8 protrudes over the flat part of the hook plate, the bent one Part 2 covers the handle 8 optically. By pulling the handle 8 in the direction At the bonding level, the hook can be removed from the window frame without leaving any residue (Arrow B in Fig. 1).

Such a hook is glued in all 4 corners of the window frame, whereby the bent parts or legs 2 from an imaginary center of the window point diagonally outwards. A fly screen with an elastic band on the edge of the net is placed over all 4 hooks so that the elastic band behind the bent legs 2 is tight and its train firmly against the surface of the window frame 6 is pulled and thus fits closely to it.

Example 2

A part formed as in Example 1 is made of polystyrene as an injection molded part manufactured. For the rest, reference is made to Example 1.

Example 3

3 shows a further embodiment of a hook shown, seen from the side, with a flat first leg 1, adhesive film strip 5 (A handle as shown in Example 1 is not shown here, but is advantageous may be present), glued to a window frame 6. The second leg is here designed as a rounded area 2. The fly screen is also outstanding here brought up to the window frame 6.

Example 4

FIG. 4 shows a further variant, roughly corresponding to FIG. 1, but this time with Adhesive film strip 5 (again, as in Example 3 without the handle shown), glued to a window frame 6, the flat first leg 1 here as Base plate 9 is formed, on which by means of latching connections 11 the entire further Hook part 10 is attached or detachable. The leg 2 forms with the Window frame 6 an acute angle of 45 °.

Claims (5)

1. Use of a hook with two legs and

   a) two mutually adjoining regions forming the two legs (1, 2), of which

   b) the first leg (1) is designed such that it is flat and can be adhesively bonded on a planar underlying surface, while

   c) the second leg (2) is angled away from the flat, first leg (1) in such a way that, seen from the side, adjoining the first leg (1), it forms an acute angle with the latter,

   for the reversible fastening of a flexible fly screen or the like, characterized in that such a hook is adhesively attached to each of the 4 corners of a window frame or door frame in such a way that their second, angled-away legs face diagonally outwards, so that the border of a fly screen can be stretched over them.
2. Use according to Claim 1, characterized in that a fly screen which is flexible as a whole and/or the border of which is flexible is used.
3. Use according to Claim 1, characterized in that the first leg is made reversibly bondable by means of a self-adhesive film which can be unstuck by pulling.
4. Use according to Claim 1, characterized in that a grip tab of a self-adhesive film which can be unstuck by pulling protrudes over the first leg.
5. Use according to Claim 1, characterized in that the grip tab protrudes such that it is concealed behind the second leg.

Images