CZ2000900A3 - Plug-in connector for hollow profiles - Google Patents

Abstract

The plug-in connector in the form of a stamped or bent metal plate (1) has a U or box shaped cross-section. One edge of its side-arms has a unilaterally-acting fixed stop-piece; the contrary fixed stop-pieces are positioned at the join with the hollow profiles. A sloping lead-in part (17,18) belonging to each of the fixed stop-pieces (15,16) is positioned at the other edge (13) of the side arms (11) and on the opposite side of the join (6). The sloping lead is positioned at a slanting transition (14) between the side and middle (10) arm.

Description

SHUTTLE CLUTCH FOR Hollow Profiles

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a male connector for hollow profiles, in particular for spacer elements of insulating glass panes, with the features of the preamble of the main claim.

BACKGROUND OF THE INVENTION

Such a plug-in coupling is known from EP-A-0 330 906. It has a U-shaped cross-section with a central web and two lateral webs adjoining it. At the transition between the center bridge and the side webs, the stops and the chamfers are arranged separately and at a distance from each other. The stops act on both sides and keep the hollow profiles at a distance from each other, forming a gap at the connection point through which the sealing means can be injected externally into the hollow profile. The chamfers are triangular in cross-section and are at their highest point lower than the adjacent stop. The chamfer chamfers are used to rotate and align the male connector in the respective stable hollow profiles.

Another male coupling is known from DE U 94 11 067. It has a substantially U-shaped cross-section with a central bridge and two lateral webs. At the free ends of the side uprights, there is always one fixed, one-sided acting stop, the stops acting against each other and in the region of the connection point of the hollow sections. · · · · · · · · · · · · · · · · · · · · · · ·

The clamping side are offset axially from each other. These stops are designed as thin-walled straight protrusions of the side webs and can cooperate with extended spring protrusions in the central region of the central web. These flexible projections are spaced far beyond the connection point and serve as retaining elements to prevent unintentional withdrawal of the male connector and also of the hollow profiles. In one embodiment, there may also be a single wide fixed stop at the center of the central web opposite to such a flexible projection. In addition, this document describes a further embodiment of a male coupling with two rigid stops arranged on the central bridge at a lateral distance from the lateral webs in the form of double-acting studs.

The known plug-in couplings are particularly suitable for relatively thick-walled hollow profiles which have high dimensional stability. Very thin-walled stainless steel profiles now play an important role in profile development. These profiles do not have great shape stability and can deform during sawing. In such profiles, it is difficult to hit the center when inserting the male coupling and to engage it with a stop provided for this purpose. Due to the small wall thickness of the profile, the stop should also have only a relatively small height.

SUMMARY OF THE INVENTION

SUMMARY OF THE INVENTION The object of the present invention is to provide a male coupling suitable also for thin-walled and unstable hollow profiles.

This object is achieved according to the invention by the features set forth in the first claim. The male coupling according to the invention is

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3 are preferably provided with fixed stops, in the transition between the central web, the leading chamfers act in the corner regions of the hollow profile, where they have sufficient shape stiffness and support due to the bending of the hollow profile. The corner regions of the hollow profiles are usually least deformed.

The stops are preferably provided with leading chamfers to which a hollow profile can be slid, adapted in cross-section to the male coupling. Leading chamfers guide the inserted hollow profile against the opposite edge of the web. Here the hollow profile is supported and guided reliably. The web edge may have a smooth continuous edge at least in the region of the connection point. Alternatively, further fixed stops may be provided, on which the hollow profile abuts.

The end wall of the push-in hollow profile reliably abuts against the stops by means of the chamfers and the tension between the hollow profile and the engagement clutch. Thus, especially in the case of highly deformed hollow profiles, it is possible to reliably find the center during insertion of the male coupling. The profiles may be adjacent to each other at the connection point.

For stops or. their leading chamfers are particularly advantageous if they have a convex outwardly domed shape. Due to their position and design, they can act precisely in the corner region of the hollow sections and thus improve both the abovementioned stop and centering function and also stabilize the hollow section itself.

The male connector according to the invention may have an elastic sealing body which serves to reliably, simply and inexpensively seal the joint or joint of the hollow profiles.

which are also arranged by side struts. So, Γ • • t t t t t t t t t t t t t t

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The sealing body is particularly advantageous over the seals known from, for example, EP-A 0 133 655 and EP-A 0 330 906, in which a sealing compound of butyl or the like is injected into the inner space when the male connector is mounted in the hollow profiles. The sealing body allows a reliable seal against the fine dust that can be developed from the granulated desiccant contained in the spacer frame.

Furthermore, the elastic sealing body has the advantage of being easy to handle. By squeezing its overlap during assembly, it engages with pressure on the sealed connection point. This serves to improve the sealing effect.

The male coupling may have a plurality of holes in its wall through which the elastic sealing body protrudes outward when compressed and abuts against the wall of the hollow profile. On the one hand, they may be recesses at the stops and the chamfering chutes located in the corner area. Furthermore, recesses can also be provided in the opposite edge of the web for laterally penetrating the sealing body.

For fixing and guiding the sealing body, it is advantageous if the plug-in coupling has a suitable hollow space in which the shaped body can be arranged, optionally with an adapted shape. It can be fastened in a simple manner, for example by means of a glued connection.

In order to improve the pressure and sealing effect, it is advantageous if the male coupling has a protrusion in the wall opposite the opening of the cavity. The projection arches the sealing body in the region of the connection point more strongly outwardly through the opening of the cavity.

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Further advantageous embodiments of the invention are set out in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is illustrated schematically by way of example with reference to the drawings, in which:

Fig. 1 is a bottom and two side views of the male coupling; Fig. 2 is an enlarged, cut away side view of a male coupling with a stop and a chamfer as well as an additional fixed stop; 4 two enlarged and cropped close-up views of the stops with leading chamfers,

giant. 5 variant stand, Fig. 1 with stops and direct edge giant. 6 cut off and enlarged detailed representation Fig. 5 giant. 7 retractable from below, spojka s sealing body in perspective

Fig. 8 is a side view of the male connector of Fig. 7; Fig. 9 is a front view of the male connector of Fig. 8;

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The modified side of FIG. 10 is a front view of the male coupling in the mounted position in the hollow profile, and FIG. 11 is a plan view of the male coupling in the mounted position.

DETAILED DESCRIPTION OF THE INVENTION

Giant. 1 to 11 show a male connector 7 in the form of a straight connector provided for hollow profiles 2, 3 of spacer elements for glass insulating sheets. Giant. 5 to 7 represent a male connector 1 in conjunction with these hollow profiles 2, 3. Alternatively, they may be other hollow profiles, eg partitions for glass insulating sheets.

The spacers formed by the hollow profiles 2, 3 shown serve to maintain the spacing of the two individual sheets of an insulating glass pane (not shown). The illustrated hollow profiles 2, 3 are preferably particularly thin-walled and consist of stainless steel. They have considerably reduced thermal conductivity compared to the thick-walled hollow profiles made of light metal, in particular aluminum or aluminum alloy, hitherto used, and are particularly suitable for glazing with high thermal insulating ability. Such hollow profiles 2, 3, for example, have a wall thickness of about 0.2 mm.

In the illustrated embodiment, the hollow profiles 2, 3 have a substantially rectangular shape in cross-section. A chamfer or rounding may be provided in the corner region 5 (see FIG. 10) between the ceiling region 4 of the frame spacer facing outwards and the side walls. The opposite profile bottom lies on the inside 7 of the frame spacer frame.

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· .. · Modified side of the element and faces the inner space of the table. There may be sharper corners between the bottom and the side walls of the hollow profiles 2, 3. Alternatively, the side walls may extend beyond the bottom into longitudinal webs. The illustrated cross-sectional shape of the hollow profiles 2, 3 can be varied as desired and can be formed differently from the embodiment shown.

The plug connector 1 is adapted to form hollow sections 2, 3 by its cross-sectional shape. In the illustrated embodiment, it has a U-shaped cross-section with a central web 10 and two lateral uprights 11 extending perpendicular therefrom. An angular or rounded transition 14 may be provided between the central web 10 and the side webs 11. By way of derogation from the illustrated embodiment, the male coupling 1 can also have a box-like closed cross-section. In addition, its formation can be modified in a different way by adapting the shape of the hollow profile.

The push-in connector shown preferably consists of metal. However, it may also consist of plastic or any other suitable material as well as a composite material. In the illustrated embodiment, however, it is made as a pressed and bent sheet steel part. It preferably consists of strip steel, which after pressing and bending is treated and galvanized.

The plug-in clutch 1 has a center stop at the connection point or at the point 6, which preferably forms the transversely extending center line of the clutch 1. The central stop of at least two stops 17, 18, which is at least impinged on at least the front wall of the first hollow profile 2, 2 to be inserted. In addition, according to FIGS. 1 to 4, fixed stops 15, 16 can also be provided.

AND

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By means of the central stop, the engagement clutch 1 is always half in the two hollow sections 2, 3. It allows the hollow sections 2, 3 to be tightly assembled at the connection point 6 and prevents the formation of joints at this point. This, on the one hand, improves the optical appearance of the spacer and, on the other hand, prevents spilling inside the placed dryer at the junction 6 and entering the interior of the table.

As shown in FIGS. 3, 4, 9 and 10, the stops 17, 18 are arranged in the aforementioned oblique transition 14 between the central web 10 and the side webs 11. The stops 17, 18 thus incline outwardly and preferably have a cross-sectional direction. an outwardly curved convex shape 25. In the illustrated embodiment, they are molded and die-cut.

The stops 17, 18 are preferably arranged as opposed one-sided fixed stops. They are reversed in opposite directions, each stop 17, 18 acting on only one hollow profile 2, 3. As shown in FIG. 11, the hollow profile 2 abuts the stop 17 and the hollow profile 3 abuts the stop 18. The stops 17, 18 are for for this purpose, at the front end facing the joining point joins are cut straight across the longitudinal axis of the coupling, thus forming a stop edge 19. The stops 17, 18 are arranged axially offset in the region of the joining point 6 and lie opposite each other at the joining point 6. They can be offset somewhat back from the connection point 6.

The stops 17, 18 each have a leading chamfer 24 on their rear side, which wedges from the upper side of the transition 14 in each case to the stop edge 19 and to the connection point 6. A recess 21 is always provided in front of the stop edges 19 of the stops 17, 18. This recess 21 facilitates the punching and is advantageous for forming a straight stop recess 21 &apos;.

Edges edge 19.

The cambering of the 25 stops 17, 18 respectively. their leading chamfers 24 may be formed as small ridges that are narrower than the transition 14. FIG. 3 and 4 represent such an embodiment. According to another variant, as shown in FIGS. 9 and 10, the camber 25 is larger and extends laterally into the central web 10 or 10, respectively. of adjacent side struts 11.

The additional fixed stops 15, 16 are each arranged on one edge 12 of the side web 11. Preferably it is the lower edge of the web facing the inner side 7 of the frame. The fixed stops 15, 16 act only in one direction, the opposite directions of action. The fixed stops 15, 16 are axially offset from one another in the region of the connection point 6 and lie opposite one another at the location 6. The right fixed stop 15 cooperates with the hollow profile 2 and the second fixed stop 16 cooperates with the hollow profile 3.

As is apparent from FIG. 2, the fixed stops 15, 16 preferably have the shape of triangular stop projections and have a stop edge 19 at the front facing the connection point 6, which extends substantially transversely to the longitudinal axis of the coupling. The stop edge 19 may extend into a small free punch. On the rear side, the stop projections 15, 16 have an inclined side 20, on which the hollow profile 2, 3 slid from the rear side slides. Their shape may correspond to PARTS 94 11 067.

In the embodiment shown, the stop projections 15, 16 project from the lower edge 12 of the web and lie in the extension of the side webs 11. Alternatively, the stops may be fixed.

The treated side may also be formed obliquely or laterally, so that they can laterally extend beyond the lateral surfaces of the webs 11.

In the second edge region 13 of the side uprights 11, stops 17, 18 are provided. After the fixed stop 15 there is a stop 17 and after the fixed stop 16 a second stop 18. As can be seen from FIG. 2, the fixed stops 15, 16 and the stops 17, 18 associated therewith at the same side web 11 are arranged opposite each other at the connection point 6. The fixed stops 15, 16 lie on one side of the connection point 6 and the stops 17, 18 on the opposite side.

As can be seen from FIGS. 1 and 2, the stop edges 19 of the fixed stops 15, 16 and the stops 17, 18, each located on the same side web 11, have opposite directions. As shown in the exemplary embodiment, the stop edges 19 may be arranged somewhat axially offset relative to the connection point 6 or the center line. Alternatively, however, they may also lie at the same level.

In their stop function, the same oriented fixed stops 15, 16 and stops 17, 18 and their leading chamfers 24 cooperate. That is, the fixed stop 15 cooperates with the stop 18 located on the second side web 11 and the fixed stop 16 with the diagonally opposite one as well. The functionally cooperating stops 15, 18 and the stops 16, 17 lie at the same height with their stop edges 19 in axial view. Thus, the hollow profiles 2, 3 which are pushed in contact with each other face two diagonally opposite corners of the end walls.

As can be seen from the illustration on the left in FIG. 1, the hollow profile 2 is first slid in the direction 8 onto the male connector L *. ·· # · «·

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In this case, it slides in the outer corner region 5 on the chamfer 24 of the stop 17 and its inclined side. At the diagonally opposite corner, the hollow profile 2 is slid onto the back 20 of the fixed stop 16 (not shown). In the area of the connection point, respectively. the center lines 6 impinge on the fixed stop 15 in the bottom region and in the diagonally opposite corner region 5 against the stop 18.

The achieved sliding of the hollow profile 2 on the chamfer 24 of the stop 17 causes the hollow profile 2 to be raised and compressed by the bottom against the lower edge 12 of the web. As a result, the end wall of the hollow profile comes into reliable contact with the stop edges 19 of the fixed stop 15.

As can be seen from FIG. 2, the fixed stops 15, 16 project only slightly outwardly over the respective edges 12 of the webs.

This overlap is approximately as large as the wall thickness of the profile, in the illustrated embodiment approximately 0.2 mm. The increase of the chamfer can be considerably greater. In the embodiment shown, for example, about 0.5 to 1 mm is at the top of the stop edge 19.

The second profile 3 which is pushed on subsequently strikes the front side of the first hollow profile 2 or the corresponding stops 16, 17 of the plug-in coupling 1. When the stops 15, 16 and 17, 18 are arranged axially offset back relative to the connection point 6, they encounter a previously inserted hollow profile 2.

Giant. 5 and 6 represent a variant of the male coupling 1 according to FIGS. 1 to 4. The design and arrangement of the stops 17, 18 and their leading chamfers 24 are the same in both embodiments. In addition, the effect of stabilizing the corner region 5 of the hollow sections 2, 3 is achieved, and secondly, their more reliable orientation is directed towards the leading edges 19. In Fig. 5 and β, unlike the embodiment described above, Instead, the lower edge 12 of the web at least in the region of the connection point 6 has a straight continuous edge 26. By this edge 26 the male connector 2 is supported on the bottom 7 of the hollow profile 2, 3. By means of a straight continuous edge good support functions. Thus, the stops 22 '18 located in the transition 22' can stabilize and align the hollow sections 2, 2 particularly well with their chamfers 24 ·

One or more retaining elements 22, 23, which can be configured differently, serve to reliably hold the male connector 2 in the hollow profiles 2, 3 slid in.

In the illustrated embodiment, the flexible projections 23 are freely cut at the lower edges 12 of the side webs 11 and downwardly and laterally bent. These may be sufficient alone. In addition or alternatively, a plurality of openings 22 'may also be provided on the central web 22' facing the outside of the frame, which engage the blanking in the ceiling region 4 of the hollow sections 2, 3, and form a positive connection. This embodiment corresponds, for example, to DE-A 43 35 039. Alternatively or in addition, resilient projections can also be provided on the central web 10. The plug-in coupling 2 can be closed or open on the front sides. However, it may have any design other than that shown.

Giant. Figures 7 to 11 show further variants of the male coupling 2 ·

In the illustrated embodiment, the male coupling 2 also has a substantially U-shaped cross-section. Its walls consist of a central web 10 and two perpendicular or inclined side webs 22.

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The webs 10, 11 together enclose a hollow space 32 that is open on one side.

A sealing body 28 is provided in the cavity 32, which is designed, for example, as a square cushion, and is fixed to the inner side of the central web 10 by gluing or any other suitable means. The sealing body 28 may be adapted to the shape of the cavity 32 and completely fill it. The sealing body 28 consists of an elastic material, for example a foamed plastic. The sealing body 28 is dimensioned such that it protrudes somewhat outwardly through the contours of the male connector 7 or through the openings 32 of the cavity. over the lower edge of the side webs 11.

The sealing body 28 is located at least in the connection region 6, which is preferably identical in the longitudinal direction of the male connector shown. As shown in FIGS. 9 and 10, the sealing body 28, which initially protrudes over the side webs 11, is compressed when the plug connector is mounted in the hollow sections 2, 3 and is thereby pressed against the inner wall of the hollow section 2, 3. It extends beyond the connection 6 and seals them.

In the frames of the spacer element there is a granulated desiccant 30, which is connected to the interior of the insulating glass sheet by perforation in the profiles. The closed end faces 31 and additionally the sealing cushions 28 prevent the granulate 30 from spilling out at the connection point 6.

As can be seen from FIGS. 9 and 10, the plug connector 7 is mounted in the hollow sections 2, 3 so that the central web 10 faces the outer ceiling region 4 of the hollow section 2, 3.

The hollow profile apertures 32 face the bottom region 7 *.

The hollow sections 2, 3 are formed. The bottom area 7 faces the interior of the table.

In order to locate the center of the plug-in clutch 1, at least the abovementioned stops 17, 18 and optionally further stops of any suitable embodiment are provided during assembly. The right-hand stop 17 shown in FIG. 10 acts with its front or stop edge 19 facing the place as a stop for the hollow profile 2 slid relative to the plane of the drawing from the rear and forms a leading chamfer 24 for the second, front, The hollow profile 3 shown in cross-section is correspondingly formed. It thus acts as a stop for the hollow profile 3 and as a lead-in chamfer 24 for the hollow profile 2.

The plug connector 1 has a projection 29 on the central web 10 in the region of the location 6, facing the hollow space 32, which is designed, for example, as a plate-shaped embossment. This protrusion 29 arches the sealing body 28 further at the connection point 6 through the openings 32 of the hollow space outwards. This effect is illustrated in FIG. 8. By means of this camber, the sealing body 28 is further compressed at the connection point 6 and exerts an increased contact force and sealing effect at this critical point.

As can be seen further from FIG. 8, the side webs 11 have recesses 27 at their free edges 12 in the region of the connection point 6 at their free edges. These recesses 27 can penetrate the assembled sealing body 28 during assembly and come into contact with the side walls of the hollow profiles 2 3. This effect is also evident from Figure 10.

In addition, the sealing body 28 can also protrude in the region of the stops 17, 18 by recesses or free cut-outs 21, and seal the k.

In addition, these openings and / or openings are provided. come into contact with hollow profiles 2, 3.

In addition, the male connector 11 may have one or more resilient or frictional return elements 23. In the described embodiment, these are loosely cut and laterally deflected return lugs 23, which are deflected in each case in the direction of the inlet and become jammed in the hollow sections 2, 3 during extraction. There may also be recesses or free cut-outs in the region of the return lugs 23 through which the sealing body 28 engages during assembly.

Furthermore, the plug-in coupling 7 may have other fastening possibilities. In the illustrated embodiment, the central web 10 has a plurality of apertures 22 as described above, through which, after assembly, the blackout of the walls in the ceiling region 4 of the hollow profile 2, 3 intervenes. holes 22 in the cavity 32 and the sealing body 28. Thus, the sealing body 28 can close substantially all the openings in the plug-in connector 1 during assembly.

Various variations of the illustrated embodiment are possible. On the one hand, the fixed stops 15, 16 can have a different shape, position and alignment. Also, the wedge-shaped chamfers 24 respectively. The stops 17, 18 can be formed or fitted on the male coupling 7. In the region of the central bridge 10 there may be further stops which, for example, compensate and correct the deformations of the walls of the hollow profiles 2, 3 located in this region. For this purpose, for example, spring protrusions arranged in the vicinity of the connection point 6 are also suitable. In addition, the plug-in coupling 1 can have a closed cross-section with two central webs, also on the other.

Adjusted. The sides of the central bridge may be provided with flexible protrusions, stops and the like.

The male connector may also have a plurality of cavities 32, all of which are at least partially filled. Also cross-section of male connector]. is arbitrary. Furthermore, another body may also be provided on the outside in the region of the protrusion 29. The sealing body 28 may have a shortened shape which substantially overlaps the connection point 6 and a certain double-sided protective area. Moreover, the sealing body 28 can be formed with a lateral overlap so that it already penetrates the recesses 27, 21 when the male coupling 7 is fastened. However, it can also be adapted exactly between the side uprights 11 or even narrower as in the embodiment shown. The design and arrangement of the stops 17, 18 and the retaining elements 23, 22 is also variable. The plug-in connector 1 could also be open on the end faces 31.

Represented by:

Dr. Miloš Všetečka v.r.

- 17 JUDr. Milos Všetečka advocate

120 00 Prague 2, Halkova 2

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Claims (15)

PATENT CLAIMS Plug-in connector for hollow sections (2, 3), in particular spacer elements of insulating glass panes, of substantially U-shaped or box-shaped cross-section with at least one central web (10) and side webs (11), wherein plug-in connector (1) has in the region of the point (6) the connection of the hollow sections (2, 3) the stops (17, 18) and the chamfers (24) arranged in the transition (14) between the central web (10) and the side webs (11). The stops (17, 18) face each other, act unilaterally and are arranged on both sides of the connection point (6), the stops (17, 18) having a convex, outwardly domed shape (25) and a front side in cross-section. facing the connection point (6) have a substantially straight stop edge (19) and have a leading chamfer (24) at the rear. Plug-in coupling according to claim 1, characterized in that the camber (25) passes into the adjacent side web (11) and the central web (10). Plug-in coupling according to claim 1, characterized in that the stops (17, 18) or 2 have recesses (21) in front of the leading edge (19). Plug-in connector according to one of Claims 1 to 3, characterized in that the plug-in connector (1) is formed as a pressed and bent sheet metal part, wherein the stops (17, 18) are freely molded and die-cut. • - .Jjpráyprřg .page Plug-in coupling according to one of Claims 1 to 4, characterized in that the stops (17, 18) have a height of 0.5 to 1.5 mm at the top. Plug-in coupling according to one of Claims 1 to 5, characterized in that the stops (17, 18) are offset by their stop edge (19) with respect to the connection point (6). Plug-in coupling according to one of Claims 1 to 6, characterized in that the side webs (11) have additional fixed stops (15, 16) at their edges (12), opposite stops (17, 18) in the region of the connection point (6). ). Plug-in coupling according to one of Claims 1 to 6, characterized in that the side webs (11) have a directly extending edge (26) at their edges (12) opposite the stops (17, 18) at least in the region of the connection point (6). . Plug-in coupling according to one of Claims 1 to 6, characterized in that the side webs (11) have recesses (27) at their edges (12) opposite the stops (17, 18) at least in the region of the connection point (6). Plug-in connector according to one of Claims 1 to 9, characterized in that the plug-in connector (1) has an elastic sealing body (28) which can be connected to the plug-in connector (1) before assembly and at least in the region of the connection point (6). exceeds the contour of the male coupling (1). Plug-in coupling according to claim 10, characterized in that the sealing body (28) consists of plastic foam. • · ··· ···· • ..Opráyjsng.page Plug-in connector according to claim 10 or 11, characterized in that the plug-in connector (1) has at least one hollow space (32), open to the connection point (6), in which the sealing body (28) is arranged. Plug-in connector according to one of Claims 10 to 14 12, characterized in that the sealing body (28) is fixed to the male connector (1) by means of an adhesive connection. Plug-in connector according to any one of claims 10 to 14 13, characterized in that the wall (8) of the male coupling (1) opposite the opening (18) of the cavity has, in the region of the connection point (6), a projection (29) which arches the sealing body (28). Plug-in connector according to one of Claims 1 to 14, characterized in that the plug-in connector (1) has several retaining elements (22, 23).