EP0172575A2 - Connecting arrangement - Google Patents

Abstract

1. Connection arrangement, in which good heat-conducting parts (30; 52, 55; 51, 56; 108) are connected together by at least one connection element (1; 53, 54; 57, 58; 80; 126) of badly heat-conducting material and in which this connection element (1; 53, 54; 57, 58; 80; 126) has at least one recess, in which a projection (37, 116) of a good heat-conducting part (30; 52, 55; 51, 56; 108) engages, such that this projection (37, 116) of the good heat-conducting part (30; 52, 55; 51, 56; 108) is connected with an element (38', 119), which can be bent relatively to the projection (37, 116), and in which the connection element (1; 53, 54; 57, 58; 80; 126) of badly heat-conducting material has an oblique surface (41) in the recess (124), which at least partially faces the projection (37) as well as the bendable element (38', 119) of the part (36, 42) from good heat conducting material, characterized in that the good heat-conducting part (30; 52, 55; 51, 56; 108) has a bendable extension (35; 70; 73; 74; 77; 113) on a side surface, which carries a hammer-shaped projection (37, 116) projecting into the recess (124), as well as an element having the form of a step actually lying in the prolongation of the extension (35), that the step-like element (38'; 119) has grooving (23; 138) on its side opposite to the inclined surface (41) and that this grooving (23; 138), when the bendable element (38', 119) is pressed in the direction of the recess (114) where the projection (37, 116) is, is pressed into the slope of the oblique surface (41), and that the outer surfaces (42; 113) of the bendable extension (35) in the pressed-in condition, is flush with the corresponding outer surface (8).

Description

Metals, especially aluminum, have some advantages as a material for the manufacture of windows, doors and the like over wood or plastics. First of all, they are more dimensionally stable and non-flammable. Aluminum also has the advantage that it does not rust and is relatively light. A disadvantage of metals compared to wood and plastic, however, is that they are good heat conductors. If a door or window were made of solid metal, the cold could penetrate into the apartment in winter and heat in summer, which is undesirable.

In order to eliminate this disadvantage of the metals, it has long been known to manufacture windows and doors from an inner and an outer half, so to speak, and to connect both halves via poorly heat-conducting elements.

For example, a _' thermally insulated profile made of aluminum is known, which consists of two individual metal shells, the insulation zone being formed by plastic strips (DE-PS 25 59 599). These plastic strips essentially have the profile cross section of a narrow rectangle, the one long side having two notches. The fixation of the composite is achieved in that a mandrel is drawn through a cavity between the two plastic strips, which forms four internal groove webs on the plastic strips.

The disadvantage of this profile is that the plastic strips do not allow a flush finish either on the inside or on the outside.

Corresponding disadvantages also have other known profiles which have plastic strips with rectangular cross-sections as heat-insulating elements (DE-OS 30 26 262, DE-OS 27 17 352, DE-AS 27 55 697, DE-OS 28 12 128, EP-OS 00 06 555, DE-OS 28 26 824, DE-OS 30 02 693, DE-OS 30 33 206, DE-OS 31 50 578, DE -OS 30 46 153, GB-OS 20 58 893).

However, other insulating webs are also known which enable a flush termination on the outside (Glaswelt 8/1984, p. 372, middle column, illustration; US Pat. No. 3,037,590, FIG. 7). A disadvantage of these known insulating webs, however, is that a very firm connection with the associated aluminum parts is not possible.

In order to establish such a firm connection, it is known to first press protruding aluminum parts into corresponding recesses in the insulating webs (US Pat. No. 3,517,472, TCil 62; DE-OS 22 21 179, Fig. 2; DE-AS 1,101,734, Fig. 1). However, this connection still allows cross-shifts.

The invention has for its object to provide a connection according to the preamble of claim 1, which is displaceable neither by transverse nor by longitudinal forces.

This object is achieved in that the projection of the highly heat-conducting part is connected to a part which is bendable relative to the projection.

The advantage achieved by the invention is, in particular, that a firm connection between the good heat-conducting part and the poorly heat-conducting part is produced by pressing in the bendable part. In an advantageous development of the invention, an additional cross strut is used, which excludes transverse displacements. In a further advantageous embodiment of the invention, this cross strut can be used at different angles because a recess in the connecting element is designed accordingly. It is also particularly advantageous to provide the bendable part with corrugations on its underside so that it can firmly grip the poorly heat-conducting part.

Embodiments of the invention are shown in the drawing and are described in more detail below.

• Fig. einen Profilquerschnitt eines erfindungsgemäßen Verbindungselements;
• Fig.2 eine Detaildarstellung der Verbindungsstelle zwischen einem Verbindungselement und einem zu verbindenden Teil;
• Fig.3 die Verbindung zwischen einem Flügel und einem Rahmen durch jeweils zwei Verbindungselemente;
• Fig.4 eine Variante des erfindungsgemäßen Verbindungselements;
• Fig.5 eine Profilansicht einer erfindungsgemäßen Verbindungsanordnung, bei der ein erfindungsgemäßes Verbindungselement mit einem gut wärmeleitenden Teil im Eingriff steht;
• Fig.6 eine Draufsicht auf die Anordnung der Fig.5;
• Fig.7 eine isolierte Darstellung des in der Fig.5 gezeigten Verbindungselements;

Show it:

• Fig. A profile cross section of a connecting element according to the invention;
• 2 shows a detailed representation of the connection point between a connection element and a part to be connected;
• 3 shows the connection between a wing and a frame by two connecting elements;
• 4 shows a variant of the connecting element according to the invention;
• 5 shows a profile view of a connection arrangement according to the invention, in which a connection element according to the invention is in engagement with a good heat-conducting part;
• Figure 6 is a plan view of the arrangement of Figure 5;
• 7 shows an isolated representation of the connecting element shown in FIG. 5;

1 shows a connecting element 1 which has an upper engagement part 2 and a lower engagement part 3. Both engagement parts 2, 3 are connected to one another via a web 4. The upper and the lower part of the connecting element 1 are mirror images of an axis 5. The straight line 6, which runs essentially through the center of the engagement parts 2, 3, is at a distance a from a second straight line 7, which coincides with the side surface 8 of the connecting element 1. A further straight line 9, which has a distance b from the straight line 8, runs between the two straight lines 6 and 7. This Distance b defines the thickness of the web 4. While the lateral delimitation of the connecting element 1 takes place on one side by the straight line 7, the connecting element 1 on the other side is delimited by a straight line 10. The tips 11, 12 of the engaging parts 2, 3, which have an upper broad part 13, 14 and a lower narrower part 15, 16 abut this straight line 10, as a result of which they acquire a dovetail-like shape.

The web 4 is delimited on one side by the straight surface 8 and on the other side by the surface 17, which is curved at least in its upper and lower region 18, 19. The curved regions 18, 19 of this surface 17 merge into projections 20, 21 which end with their tips on a straight line 22. This straight line 22 is preferably between the straight line 10 and the straight line 6. However, it can also coincide with the straight line 10.

The engagement between the connecting element 1 shown in FIG. 1 and a part 30 to be connected is shown in more detail in FIG. 2. The arrival part 2 is somewhat changed compared to the representation in FIG. 1. Although this engaging part 2 also has an upper wider part 13 and a lower narrower part 15, this lower part 15 now has the shape of a neck with the diameter c, while the upper part is anvil-shaped, i.e. its ends, which are delimited by the imaginary straight lines 28, 29, are terminated by a triangular cross section 31 and a square cross section 32.

The projection 20 in the variant shown in FIG. 2 is also not as pointed as in the connecting element in FIG. 1.

An attachment 33 is provided on the part 30 to be connected, which extends from top right to bottom left in such a way that a surface 34 of the triangular cross section rests on this attachment 33. The part 30 to be connected has a further extension piece 35 which has a part 36 which runs vertically downwards and which is closed off by a hammer 37 which projects to the right. That hammer 37 has approximately the shape of a shoe, the shoulder 38 ′ of which forms a cavity 39 to the sole region.

The connection between the connection element 1 and the part 30 to be connected takes place in the following way: in the initial state, the shoulder 38 is bent outwards somewhat, as indicated by the reference number 38 ′. The extension 33 is either inclined vertically downwards or it already assumes the shape shown in FIG. 2. If it takes the form shown, the engagement part 2 is inserted into the groove which is formed by the elements 33, 35, 36, 37. However, the connection between the engagement part 2 and the part 30 to be connected is not yet very firm because the engagement part 2 can be moved in the groove. In order to establish a firm connection, the outwardly bent shoulder 38 ′ is used with a plunger or the like in a manner known per se (see DE-AS 11 01 734). pressed inward. The tip of the shoulder 38 is used to scrape some of the plastic connecting element 1. The planed chips can clog the gap between the hammer 37 and the surface 41 of the stea 4, if no special measures are taken. This clogging of the gap creates a firm connection between the part 30 to be connected and the connecting element 1. It may happen that the paragraph 38 cannot be brought into its target end position. However, this is not desirable because it is precisely an essential advantage of the invention that the side surface 8 of the web 4 is flush with the side surface 42 of the part 30 to be connected. In order to avoid that the chips mentioned prevent the smooth closure between the surfaces 8 and 42, the cavity 39 is provided which can accommodate the chips.

Instead of a plunger 40, which presses the shoulder 38 against the web 4, another element can also be provided. For example, it is possible to use rollers, wheels, knurled wheels or the like which roll over the spread-out shoulder 38 '(cf. DE-PS 28 25 301 or DE-OS 27 17 352).

Another or additional measure to establish a firm connection between the part 30 to be connected and the connecting element 1 consists in knurling the upper side 13 of the element 1 and / or the side of the part 30 opposite the upper side 13 or with serrations or other elevations or depressions (see. DE-OS 30 33 206, Fig. 1). In order not to make it difficult to insert the engagement part 2 into the guide groove of the element 30, the parts 36, 33 could in this case be spread apart before the introduction of the engagement part 2 and only be pressed onto the engagement part 2 afterwards.

3 shows the use of the connecting element according to the invention in connection with a wing 50 and a frame 51, wherein the wing and frame can belong to a window or a door. The outside 52 of the wing 50 is connected to the inside 55 via two connecting elements 53.54 according to the invention.

The same applies to the frame 51, where the outside 56 is also connected to the inside 59 via two connecting elements 57, 58 according to the invention.

It can be seen from the illustration in FIG. 3 that with the aid of the connecting element according to the invention it is possible to produce a smooth-surface connection between the inside and the outside.

4 shows a connecting element 80, which to a certain extent consists of a combination of two of the connecting elements described above. This connecting element has two side parts 81, 82, which at their ends merge into an inclined transverse web 83, 84 and 85, 86, respectively, the cross webs 83, 84 and 85, 86 each having a dovetail-shaped insertion part 87 and. 88 are bridged.

At the connection points between the Quresteg 83 and the side part 81 adjoins a reinforcement web 89, which is connected at its other end to the connection point between the cross web 86 and the side part 82.

If necessary, the connecting element can also be provided with a second reinforcing web 79 if special strength is required. However, this generally worsens the thermal insulation values, so that efforts are usually made to make do with a reinforcement web 89 or even with no reinforcement web.

Although the connecting element 80 is constructed in one piece in FIG. 4, a one-piece connecting element is not absolutely necessary for a reinforcing effect. As can be seen from FIG. 3, two individual elements 57, 58 can also be reinforced by means of struts 26, 44. For this purpose, guide rails 24, 25, 45, 46 are provided on the inside of the connecting elements 57, 58, in which, for. B. the strut 26 can be inserted later. The strut 26 runs in the representation of FIG. 3 from the top left to the bottom right; however, it is also possible to provide a strut 44 which runs from the bottom left to the top right. :

2, the guide rails 24, 25 are also shown. It can be seen here that the reinforcing element 26 can simply be inserted.

2.3, small nipples 27, 41, 42, 43 are provided on the outer sides of the bendable parts, which serve to protect the outer side of these elements and the adjacent areas when the elements 70, 74, 73, 77 are pressed in and also to ensure a safe intervention. The secure engagement and the firm anchoring of the element 38 are also ensured by corrugation on the underside 23 of the element 38. This corrugation is preferably carried out simultaneously with the rolling of the part 36, 37, 38. This requires a curling and corrugating device, which is easy to manufacture. Rolling up and corrugating can of course also be carried out separately.

In order to facilitate the rolling in, a nipple 27 is provided in FIG. In this way, on the one hand, the structures adjacent to the nipple 27 are not scratched and, on the other hand, the part 36, 37, 38 is pressed in firmly.

In order to achieve the goal of ensuring a smooth seal between the upper side 8 of the connecting element 4 and the upper side of the part 36, 37, 38, the connecting element 4 (FIG. 2) could also be designed such that from the right outer tip of the Projection 20 runs an edge down and the space between this edge and the top 8 would be filled with material. However, such a connecting element would have a significantly poorer thermal insulation value than the element shown in FIG. 2. The pressure and tensile forces are absorbed in this element by the strong shoulder between projection 20 and surface 8.

5 shows a further variant of the arrangement according to the invention. The connecting element 126 made of poorly heat-conducting material and the good heat-conducting part 108 can again be seen here. The projection of the good heat-conducting part is designated by 116. This protrusion 116 is connected to a part 119 which can be bent relative to the protrusion 116 because there is a recess 122 between the two. The projection 116 itself is trapezoidal and protrudes into a trapezoidal recess 124 of the heat-conducting part 108. The rear part of the projection 116 is designated by 123 before being pushed in. With 121 it is indicated that the part 119, when it has been pressed against the connecting element 126, projects into it by a certain amount. The rolling machine with which the part 119 is pressed in is shown only symbolically and is designated by 117. The engaging part 107 has a front trapezoidal part 105, the top 104 of which is chamfered, while the bottom extends horizontally. The rear trapezoidal part 115, on the other hand, has a horizontally running upper side 114 and an obliquely running lower side 106. This configuration tion is important because the trapezoidal shape causes wedging between the parts to be connected. It has been found that if the undersides of both parts 105, 115 are formed obliquely, no particularly stable connection is achieved because the connecting element 126 can then slip out of the part 108 to a certain extent. The bottom of part 105 is flat and adapted to the flat surface of the corresponding support 103. The space between the trapezoidal parts 105, 115 has the width d and is delimited by the straight lines 110, 109 shown in broken lines.

The support 103 has a bevel 134 on its underside, which corresponds to a bevel of a hook-shaped part 102 of the element 126. The element 126 has a second, smaller hook-shaped part 127, which has a nose 129 and, together with a corresponding nose 101 of the part 102, forms a claw 128 through which a reinforcing web 131 is pushed. This reinforcement bar can also assume the position indicated at 132. Behind the claw 128 there is a semicircular cavity 100 which receives the end 130 of the reinforcing web 131. A weakening of material can be provided at point 113 in order to facilitate the bending over of part 116.

FIG. 6 shows the arrangement of FIG. 5 again in a different view. The corrugations 138 on the underside of part 119 can be clearly seen here. Reference number 137 denotes the outer surface of element 126. 141 denotes the edge of support 103. The inner edge of this support 103 is designated 142. The reference number 140 indicates the right boundary of the part 102, and the reference number 143 indicates the left boundary of the element 103.

In FIG. 7, the connecting element 126 shown in FIG. 5 is shown once again in its entire profile view. The lower parts, which functionally correspond to the upper parts, have been given the same reference numerals, but with an additional line. The trapezoidal indentations 162, 163 or 162 'and 163' can now be clearly seen.

Regarding the stiffening elements, it is emphasized once again that they are designed so that the diagonals can be adjusted according to the desired bevels, depending on the distance between the web connectors. These diagonal braces are only designed as short pieces so that the heat transfer figures remain optimal. Profiles with continuous stiffening ribs result in poor heat transfer values. It is therefore an important embodiment of the invention that the stiffening webs do not extend over the entire profile depth. Due to the increasingly heavy glazing that is common today, it is advantageous to achieve stiffening between the two composite webs in the insulation area, particularly in the area of the window's treading profile.

Claims (16)

1. Connection arrangement in which parts with good heat conductivity (30; 52.55; 51.56; 108) can be connected to one another by at least one connection element (1; 53.54; 57.58; 80; 126) made of poorly heat-conducting material and wherein this connecting element (1; 53,54; 57,58; 80; 126) has at least one recess into which a projection (37; 116) of a good heat-conducting part (30; 52,55; 51,56; 80) engage can, characterized in that the projection (37; 116) of the highly heat-conducting part (30; 52,55; 51,56; 108) is connected to a part (38 ', 119) which is relative to the projection (37 ; 116) is bendable. 2. Connection arrangement according to claim 1, characterized in that the part (38 ', 119) is provided with corrugations (23; 138) and on a shoulder (41; 122) of the poorly heat-conducting connecting element (1; 53,54; 57 , 58; 80; 126). 3. Connection arrangement according to claim 1, characterized in that the poorly heat-conducting connecting element (1,53,54; 57,58; 80,126) has a further recess (18,100) into which a reinforcing element (26,44, 131) can be inserted. 4. Connection arrangement according to claim 1, characterized in that the connecting element (1) has two on a straight line (6) engaging parts (2,3) which are connected to one another via a web (4), one side (8) opposite the end points (60, 61, 62) of the engaging parts (2, 3) is laterally offset, one side (8) being closed by a second straight line (7) and the thickness (b) of the connecting element (1) on the one hand by the wall surface (8) lying on the second straight line (7) and on the other hand delimited by a surface (17) or straight line (9) which is located between the first and the second straight line (6, 7) and that the engaging parts ( 2,3) each have an upper broad and a lower narrow part (13, 14, 15, 16) and the surface (17), which is located between the first and the second straight line (6, 7), at least at their ends (18,19) is curved, and that the upper wider part (13,14) of an engagement part (2,3) begin with a straight line (10) is delimited, which with the second straight line (7) maximum width of the connecting element (1) defined. 5. Connection arrangement according to claim 1, characterized in that the connecting element (1; 126) is provided in pairs for the production of the connection. 6. Connection arrangement according to claim 1, characterized in that the connecting element (1,53,54; 57,58,80,126) engages in at least one guide (33, 36,37) of a part (30) to be connected, the guide of the The part (30) to be connected is adapted to the shape of an end (2) of the connecting element (4) and that at least one side of the guide has a bendable part (38) which is between itself and a part (37) engaging in the end. has a recess (39). 7. Connection arrangement according to claim 1, characterized in that two parts to be connected (56,59,52,55) each have two lateral support elements (70, 73,74,77) and two inner support elements (71,72,75,76) exhibit. 8. Connection arrangement according to claim 1, characterized in that a first connecting element is connected to a second connecting element, and that this connecting element (80) thus formed is hollow on the inside and has a web (89) through this cavity and that it is at both ends has an insertable or clampable head (87, 88) which is provided with a cavity. 9. Connection arrangement according to one or more of the preceding claims, characterized in that a side part (36,37,38) of the part to be connected (30) is bendable and the bend takes place around a thinned material (at 36), the underside (23) of the bendable part (38) is corrugated. 10. Connection arrangement according to one or more of the preceding claims, characterized in that the connecting element has two guide rails (24, 25) into which a reinforcing element (26) and that the reinforcing element (26) is arranged between an upper region of the one connecting element (57) and the lower region of the other connecting element (58). 11. Connection arrangement according to claim 3, characterized in that the recess (100) for the reinforcing element (131) has a relatively narrow entrance and a relatively large rear space. 12. Connection arrangement according to claim l, characterized in that the connecting element (126) has a hammer-like head with a front and a rear trapezoid (106, 105), this head engaging in a corresponding recess of a highly heat-conducting part. 13. Connection arrangement according to claim 12, characterized in that the front trapezoid has on its underside a horizontal surface with which it rests on a horizontal surface of the heat-conducting part, and in that it has a beveled surface on its upper side which is at a beveled Surface of the good heat-conducting part is adapted, while the rear trapezoid is chamfered on its underside and runs horizontally on its top. 14. A method for producing a connection between two parts to be connected by means of a connecting element, characterized in that the ends of the connecting element are inserted into the guides of the parts, and that the flexible parts (38) are pressed from an outer position to an inner position . 15. The method according to claim 14, characterized in that a rolling and knurling machine is used to produce the connection, wherein the rolling of the part (38) and the knurling of the underside (23) of this part (38) takes place in one operation. 16. Connection arrangement according to claim 1, characterized in that a connection between a connecting element (2,4) made of poorly heat-conducting material and a part (30,42) made of good heat conductance the material is produced, the connecting element (2, 4) having an engagement part (2, 15, 31) which is supported with a side (31) on a shoulder (33, 34) of the part (30) made of a material which is a good heat conductor and which on the other side has a projection (32) which can be engaged by a bendable element (23,38) of the good heat-conducting part (30,42), and that the connecting element (2,4) made of poorly heat-conducting material Inclined surface (41), at least in some areas opposite an engagement part (37) of the part (36,42) made of good heat-conducting material, and that the bendable element (23,38) of the good heat-conducting part (30,42) with it Underside (23) is pressed onto this inclined surface (41) by being pressed in and forms a recess (39) between itself and the engaging part (37).

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