DE2336839A1 - Plastics tubular door or window frames - reinforcing mitred corner construction to withstand stresses - Google Patents

Abstract

Tubular plastics frame has mitred corners of outer tubular frame members fitted with mitred metallic tubular corner pieces into which are in turn push fitted tubular plastics mitred corner pieces, provided with mitred faces. On heating the mitred corner ends and pushing the corner ends together the corner pieces are joined to the inner walls of the outer tubular members at the mitre joint and the metallic corner pieces abut the narrow mitre joint. Used in door or window frames.

Description

DR.-ING. HERBERT PAl'ZOD)

PATENT Attorney O O O O O Q Q

8 MUNICH 71

aiNBEIAUGSTB. 8 TE I ₄ E 3? ON 0811/73 77 25 TELEGRAM ADDRESSEiPATITTA MUNICH

Alois Schmitt

8752 Goldbach Aschaffenburger Strasse 126

Art at off frames, especially for windows and doors and process for its manufacture

The invention relates to a hollow profile rod welded together Plastic frame with in the Bahaeneoken Plastic corner brackets for connecting two rerschweißt at the miter joint and hollow profile rods refined by metal pipe inserts, especially for windows and doors, whereby a ftckwinkel consists of two miter-welded corner legs that are inserted into the metal tubes of the engage both hollow profile rods.

The invention also relates to a method of production such a plastic frame «.

Plastic frames of the type mentioned are in the various designs known. They all have the disadvantage that the frame is not sufficient Have bending and torsional stiffness and at larger spans so that the eak connections the tension that arises in the Eakea; grown a *. 4098 86/067 9

DEUTSCHE BANK ΑΘ ACCOUNT NUMBER 58/23531 POSTSCHECK MUNICH 143918 -

These difficulties are especially common with larger ones Window frames are particularly large due to the heavy weight of the glass panes used when the stalks stronger heat effects νorallern at high outside temperatures are exposed.

The object of the invention is to provide an iiahmen of the initially Specify mentioned type and a simple method for its production, even with large spans and stronger heat radiation a sufficiently high level Flexural and torsional stiffness with fully sufficient has firm jack connections.

To solve the problem, the invention is based on the idea based on which to stiffen the plastic profiles in these inserted metal pipes on the itch largely close to the miter joint in order to be able to move within the Welded together Äahmens a largely self-contained, rigid metal tube frame.

The task “became one of those mentioned at the beginning Kind of solved in such a way that the welded back legs in the miter joint form a narrow one with the inner ± * οίilwhnen the profile bar «welded weld seam form, bordered on both sides by swei miter-cut metal pipes, which are at least one point at a distance from the guide joint Hollow profile bars are firmly anchored.

Advantageously, the ochwhkel in the Miter joint welded together at an i & k angle Plastic legs made from injection molded hollow parts with tight fit in the hollow space of the metal tube. It is advantageous for the metal pipes around aluminum square tubes.

409886/0679

The anchoring of a metal pipe alone or together with the inserted handle on at least one place at a distance τοα the miter joint with a «hollow» profile rod takes place, advantageously by at least one, the profile wall of the hollow profile tab, of the leg and / or the metal pipe transversely penetrating ;! iMetallishe Riveted connection. This may well be the case Uta a hollow knot with a sheep and an as ITietkopf trained hand act. Through the sheep protrudes a nail, the head of which is at the weary of the shaft rests · By standing up against the hail when fastening the Ii ie te using a pincer-like tool, the The rivet shank is compressed and its diameter is thus considerably increased. It was found that the well-known rivet «sum Riveting interlocking metal and plastic parts is surprisingly well suited.

The process for the production of the plastic frame * according to the invention consists in the fact that the handle is made of plastic are produced, each having a stool end protruding from the metal tubes, the one mitred τοη flat and at a distance τοη of the welding surface has a protruding edge substantially as thick as the metal pipe, which Tape on the mitered lade egg & ee metal * pipes * comes to support that the welding surface an Eek leg * inserted in a metal tube inside a mitered welding surface of a hollow profile rod comes to rest and the hollow profile rod is firmly anchored with the leg and / or the metal tube at a distance from the miter joint and that two hollow profile rods prepared in this way aa heated the welding surfaces and formed a film corner bi * to the intended size of the miter joint in the frame corner compressed under displacement of plastic material be, with the metal rod * except for a small one

4Ö9S86 / O679

Distance tone of the miter joint approximated to one another.

It can be advantageous if the hollow profile rod old riveted to the metal pipe and the back leg and then the hollow profile rod with the uchenkelende protruding from the metal tube is mitred together get cut.

The solid anchoring of the metal tubes with the hollow profile rods ensures that when you squeeze the Miter-cut hollow profile bars, which are raised at the cut surfaces, the metal bars in the area of the miter joint can be brought closer together except for a small distance. In this way one becomes within the xu Frame welded hollow profile bars an almost closed sener, largely bending and torsion-resistant tubular metal frame obtain. The tubular metal frame is firmly connected to one another by means of plastic corner brackets Form sehmale connecting webs in the miter joint to which the miter surfaces of the metal pipe ends in one Closely adjoin the corner of the hammock. These bars are with Weld beads in connection, which are in the miter joint when two profile rods are welded together to form an intimate one with the inner surfaces of the profile rods Make visual white contact see below.

The invention is based on τοη drawings for an embodiment described and explained in more detail. Herein shows

Fig. 1 is a perspective view of two hollow profile bars gate welding together, see below a hook corner, where dl · hollow profile bars are shown broken in places

Fig. 2 is a plan view of the welded Hahmeaeeke according to FIG. 1, which is shown in the Miter joint is shown broken.

409886/0679

In Figs. 1 and 2 there are two hollow profile rods 1 and 2 aua plastic shown leading to a Äahmecke are to be welded together. I «Sepielefalle tie it to a window frame. For stiffening the Hohlprofilstäse are in these square tubes 3 and introduced from aluminum. The square tubes 3 and 4 are Mitred cut to form a stiffened corner. To connect the square tubes are in this Lcksehenkel 5 and 6 introduced from plastic. The iiiOkschenkel 5 and 6 exist in the example made of injection-molded square hollow bodies that fit snugly into the square tubes. the Legs 5 and 6 are injection-molded on a miter at their protruding ends from the metal pipes. With distance The corner legs 3 and 6 point from the miter surface one hand 7 each, which is on the miter cut hand of the square tubes.

The hollow profile bars 1 and 2 are also mitred cut. The square tubes 3 and 4 with the legs 3 and 6 are in this way in the hollow profile rods inserted »that the miter surface of the legs comes to rest in the miter surface of the hollow profile rods.

The hollow profile rods 1 and 2 are used with the Metal pipes 3 and 4 and the inserted into them Corner legs 5 and 6 each by at least one Mete 8 firmly connected to each other, they are used to rivet the metal tubes 3 and 4 with the legs 5 and to hold in their position in the hollow profile rods 1 and 2, in which the mitered end face » the leg with the mitered end faces of the Homlprofilstäie 1 and 2 in bucket i * ene lie.

-6-

409886/0679

For welding together the hollow profile tabs 1 and 2 according to 1, the miter surfaces are old from a known α Heating plate heated to welding temperature and after de * Remove the hot plate immediately moved together. For this purpose, the hollow profile rods 1 and 2 are stretched on a sweat band, not shown, old of the Hollow profile rods pressed together to form a corner «Can ground. Here, the mitered end faces of the metal pipes 5 and 4 la area of the Miter joint 9 then produce a corner with the exception of one small distance "a" approached each other. Equilateral are the Kunststoffaassen from the metal pipes protruding heated leg ends displaced inwards and outwards. This does not form in FIG. 2 Sehweißwülste shown, the generally area of the miter joint pushed into free cavities of the hollow profile rods be, with an intimate weld between the legs on the one hand to a rigid angle, also on the one hand between the corner and the metal tubes 3 and 4, on the other hand and between the angle and the inner walls of the welded hollow profile rods. i) The intimate welding is further increased by the fact that the heated ends of the hollow profile rods are collapsed also Kunatatoif material in the form a white bulge is formed, which partly bulges inwards and outwards. The outer behweißwulst is sanded off after the plastic has cooled down, while the inner white bulge also goes into the free cavity of the assembled hollow profile rods is displaced, se that the meeting Sehweißwülste of the hollow profile rods and the leg to one Inaigen connection of the hollow profiles of the dea i & kschenkeln educated Sekwiakels lead.

i-in such a way welded together from animal hollow profile rods Hahaen thus has an eiaea weltgehead inside him

409886/0679 -7-

closed metal frame on which is firmly welded together from individual, mitered metal tubes through plastic corner brackets and the one in the area Its glazing is firmly connected through the plastic corner angles1 old inner walls of the prifilat rods.

It is essential that the MetaHrehre in the profile bars as well as the «legs in the metal pipes at» welding the profile bars on a frame corner do not move mutually, especially the legs be pressed into the metal pipes without a tight weld of the two legs to one Corner angle achieved with an outwardly stepping weld bead between the close end faces of the metal pipes is, and that the metal tubes are not pushed deeper into the profile bars without the desired narrow distance between the mitered end faces of the metal pipes is achieved. By a distance The rivet connections provided by the miter cuts are well suited for this. For this purpose dl superimposed walls of the hollow profile stat the metal pipes and the Eok leg on any one pierced suitable point. A hofa & r rivet is inserted into the drill hole, which consists of a head part with a bent hand and a narrower shaft part consists · A nail with a head protrudes through the rivet and is supported on the end of the shank of the rivet. By putting on the nail and holding back at the same time the rivet with a similar tool, the rivet shaft is pushed apart and at the same time shortened. This is a quick and easy way to get a solid one Connection between a profile rod, a metal tube and an Eokscheakel of an Eekwinkel achieved. In the As a rule, such a rivet connection will suffice Metal pipe on one leg during welding two profile bars «opposite the * associated profile bar in an unchangeable position.

409886/0679 -8-

It is clear that the invention is not in the nature of the rigid anchoring «smell a profile rod on the one hand and a metal pipe and a corner arm on the other hand is limited. Furthermore, the invention does not exist the illustrated configuration of the Eckachenkel limited. It is only essential that the tendons are largely fully engage the metal pipes to a fixed depth so that they are mitered with one of them Ends protrude from the metal tubes by a certain amount

The sails don't necessarily smoke fuel castings; they can be advantageously manufactured as injection-molded parts. It is essential for the legs to find a full seat with their outer surfaces in the metal hoop.The legs are advantageously designed to be hollow in order to have a perfect shape that does not have any eladelluogea on the outer surfaces, which for a largely full fit Sits of the legs in the metal pipes would be disadvantageous. Advantageously, the hollow corner legs are stiffened by criss-cross longitudinal ribs, which subdivide the cavities of the leg thighs into animal spaces.

It is particularly advantageous to use some of the hollow profile rods with the Metallremrem and 4en inserted corner legs on the one hand for making buckets of good quality But welded connection on the other hand amen for dl · stability of the GesemwelStem Immststoffifsmmens especially at grSlerea heat cimgtstrahlmmgcm * £ s also comb a Termletmmg of the prefilstäee with dsm Metallrohrea be enough.

Claims

409886/0679

Claims (5)

Claim 1.) Aue hollow profile rods welded together plastic frame with corner brackets in the corners of the roof Made of plastic for connecting two at the miter joint welded and stiffened by metal pipe inserts Hollow profile rod, especially for windows and doors, where a corner bracket consists of two »it two hollow profiles It consists of corner legs welded on a miter, which are inserted into the metal tubes of the two hollow profile rods intervene, characterized in that the welded corner legs in the miter joint have a narrow, with the inner profile walls of the profile rods form welded weld seams, on both sides of which two are mitred adjoin cut metal pipes, which at least one point at a distance from the miter joint with the Hollow profile bars are firmly anchored. 2. Plastic frame according to claim 1, characterized in that that the corner legs consist of injection molded hollow parts, which are stiffened by hipping. 3. Plastic frame according to claim 1 or 2, characterized in that for anchoring «ines metal tube ·« with an associated hollow profile rod at least «in · the · wall · d * s hollow profile rod ·· on the one hand and d * s metal pipe ·· or the metal pipe ·· and d ·· introduced Corner leg on the other hand, penetrating transversely «metallic · Rivet connection is provided 4. Process for the production of the plastic frame according to one of claims 1 to 3, characterized in that that corner legs were made of plastic, the leg ends protruding from the metal tubes have a mitered welding surface and a pre- 409886/0679 ~ ¹⁰ ~ springead's hand is essentially as thick as the metal pipe, which hand comes to rest on the mitered Εηά the hollow profile rod is firmly anchored with the leg and / or the metal tube at a distance τοη of the miter joint and that two hollow profile rods prepared in this way are heated on the üchweißflachen and compressed to form a Äahmecke up to the intended size of the miter joint of the frame corner with displacement of plastic material, wherein the metal rods are brought closer together except for a small distance from the miter joint. 5. The method according to claim 1, characterized in that the hollow profile rod is riveted together with the metal tube and the corner leg and then the hollow profile rod be mitred together with the leg end protruding from the metal tube. 409886/0679