WO2008145255A1

WO2008145255A1 - Block bridge and framed plane load-bearing element with such a block bridge

Info

Publication number: WO2008145255A1
Application number: PCT/EP2008/003829
Authority: WO
Inventors: Norbert Fink
Original assignee: Rehau Ag + Co
Priority date: 2007-05-25
Filing date: 2008-05-13
Publication date: 2008-12-04
Also published as: DE202007007545U1

Abstract

A block bridge (6) serves to support a plane load-bearing element in a frame. The block bridge (6) has a multiplicity of latching lugs (12, 13) which can be displaced elastically relative to one another and are intended for latching the block bridge (6) in a rebate base (4) of the frame (1). At least one of the latching lugs (12, 13) is neighboured by an opening (14, 15) which extends over at least half the width (A) of the block bridge (6). An elastically deformable web (16) remains between the latching lug (12, 13) and the opening (14, 15). There results a block bridge which can be mounted more easily, and it is possible for one and the same block bridge to be latched, in particular multiply latched, into the rebate base of the frame.

Description

Log bridge and framed surface support element with such a block bridge

The invention relates to a block bridge for supporting a surface support element in a frame according to the preamble of claim 1. Furthermore, the invention relates to a framed surface support element with such a block bridge.

A generic block bridge as well as a surface support element equipped therewith are known from EP 0 315 936 B1.

The block bridge is snapped into the base of the frame during assembly of the framed panel support element. For this purpose, a relatively high force is required in the known block bridge. When the block bridge engages, it can also lead to signs of fatigue in the plastic material of the known block bridge. This can reduce the holding force and slip the block bridge. The intended support is therefore not guaranteed.

It is therefore an object of the present invention to develop a block bridge of the type mentioned in such a way that their assembly is facilitated, wherein the latching of the block bridge in the rebate base of the frame is possible without damage and the holding force persists permanently.

This object is achieved by a block bridge with the features specified in claim 1.

According to the invention, it has been recognized that the disadvantages of known block bridges can be avoided if a sufficiently large recess is provided beyond elastically deformable webs relative to the latching noses, which permits a correspondingly large elastic deformation path of the web. Due to the thus enlarged elastic deformation path for the elastically displaceable locking lug, a lower spring stiffness of the elastically deformable web can be made possible. Therefore, the block bridge can be locked into the rabbet base more easily. In addition, a design of the elastically shapeable web readily feasible, in which even a multiple snapping one and the same block bridge without fatigue of the material of the block bridge is possible. The block bridge is made in particular of plastic.

A triangular shape of the recess according to claim 2, which may also be an approximate triangular shape, and in particular according to claim 3 has been found to be particularly suitable for specifying a sufficient spring travel for the elastically deformable web.

If each latch is associated with a recess according to claim 4, the associated spring paths add up advantageous. This can lead to a further reduction of the necessary locking force.

An arrangement of the locking lugs according to claim 5 has been found to be particularly favorable. The block bridge is then engaged in particular so that it is first applied with the other two recesses in Falzgrund, after which the remaining individual locking lug is engaged. Such an assembly process is simple and reproducible.

An arrangement of the recesses according to claim 6 can be realized particularly material-saving. This is especially true in a triangular shape of the recesses, since then the central recess can be arranged with 180 ° rotated orientation to the two lateral recesses and is thus fitted between the two lateral recesses.

Supporting and / or stiffening ribs according to claim 7 make it possible to produce a main body of the block bridge with a particularly low material usage, wherein the supporting function of the block bridge is completely retained.

A further advantage of the block bridge according to the invention is seen in the fact that the ventilation in the so-called glass rebate, for example, of a window has been improved to a certain extent by optimized ventilation cross-sections in the longitudinal direction and by means of recesses in the support surface. Large ventilation cross sections below the support surface allow large volumes of air to be directed under the block bridge first. The recesses in the support surface support this air exchange in all directions. The total ventilation of the glazing rebate above the rebate base and thus of the glazing edge composite is thus substantially improved and allows optimum ventilation especially for the increased requirements of high thermal insulation. Longitudinal volume flows and the volume flows acting through the recesses from above form a spatial ventilation system that optimally exploits all possibilities of ventilation and optimally meets the requirements of high thermal insulation.

A course of ribs according to claims 8 and 9 has been found to be particularly advantageous.

The advantages of a framed surface support element according to claim 10 correspond to those which have already been described above with reference to the block bridge according to the invention.

Supporting or Distanzklötze according to claim 11 allow a tolerance compensation and optionally transmit the weight forces between the framed surface support element, for example a glazing, and the circumferentially arranged block bridges. The surface support element is held in the frame with defined force ratios.

An embodiment of the invention will be explained in more detail with reference to the drawing. In this show:

1 shows a broken cross section through a section of a window or door frame in the region of a wing profile with a block bridge according to the invention;

FIG. 2 shows a view of the block bridge from the viewing direction II in FIG. 1; FIG.

3 is a side view of the block bridge from the viewing direction IM in Fig. 2,

Fig. 4 is a bottom view of the block bridge;

5 shows a view according to the viewing direction V in FIG. 2;

FIG. 6 shows an enlarged detail of detail VI in FIG. 5; FIG. and 7 is a detail enlargement to the detail VII in Fig. 5th

1 shows a section of a window frame 1 in the region of a wing profile 2. A double glazing 3 is braced against a rebate base 4 of the wing profile 2 via a spacer or support block 5 and a block bridge 6. The window frame 1 with the double glazing 3 represents a framed surface support element. The pad bridge 6 is used in particular to specify a defined perpendicular to a main plane 7 of the double glazing 3 support surface 8 for supporting the support block 5 and / or the double glazing 3. The block bridge 6 is made of polypropylene (PP) and constitutes a one-piece injection-molded component. Alternatively, the block bridge 6 can also be made of polystyrene (PS).

The exact structure of an embodiment of the pad bridge 6 is shown in Figs. 2 to 7. The block bridge has a base body 9 with a rectangular base area with an aspect ratio of a short side 10 to a long side 11 of about 1: 3. The right in FIG. 2 long side 11 has exactly one lateral locking lug 12, which is located exactly in the middle of the long side 11. The illustrated on the left in Fig. 2 long side 11 has exactly two locking lugs 13, which are arranged after a quarter and three quarters of the length of the long side 11. The lateral locking lugs 12 and 13 are elastically displaceable for latching the block bridge 6 in rabbet base 4 of the frame 1. A distance A between the locking lug 12 and the locking lugs 13 perpendicular to the extension of the long sides 11, which corresponds to the length of the short sides 10 in force-free block bridge 6, so can be reduced by compressing the locking lugs 12, 13. Another advantage of the block bridge according to the invention is seen in the fact that the ventilation in the so-called glazing rebate, for example, a window has been improved yellowish by optimized ventilation cross-sections in the longitudinal direction and by means of recesses 14, 15 in the support surface 8. By means of large ventilation cross sections below the support surface 8, large volumes of air can first be directed under the block bridge. The recesses 14, 15 in the support surface 8 support this air exchange in all directions. The total ventilation of Glasfalzes above the rebate base 4 and thus the disc edge composite is thus significantly improved and allows just for the increased demands of high thermal insulation optimal ventilation. Longitudinally effective volume flows and the volume flows acting on the recesses 14, 15 from above form a spatial ventilation system that optimally utilizes all possibilities of ventilation and optimally accommodates the requirements of high thermal insulation.

The locking lugs 12, 13 are recesses 14, 15 adjacent. In this case, the recess 14 of the locking lug 12 and one of the recesses 15 of the detents 13 is associated. An extension B of the recesses 14, 15 along the short sides 10 is about 77% of the length A of the length of the short sides 10 of the block bridge 6, ie the width of the block bridge 6. In particular, this extension B is greater than half the width A and even greater than three quarters of the width A of the pad bridge 6. Between the recesses 14, 15 and the locking lugs 12, 13 each have an elastically deformable web 16th

The recesses 14, 15 each have the shape of a spherical triangle, are thus approximated to the shape of an equilateral triangle and have rounded corners and convex arcuate sides. The webs 16 each extend parallel to a base of the recesses 14 and 15, respectively.

The cross-sectional view of the pad bridge 6 of FIG. 5 and the bottom view of FIG. 4 it can be seen that the pad bridge 6 has a total of four along the long sides 11 spaced apart support or stiffening ribs 17. Adjacent support or stiffening ribs 17 have an approximately equal distance from each other. The two outer supporting or stiffening ribs 17 extend along the long side walls 11. The two inner supporting or stiffening ribs 17 are interrupted three times in each case by the recesses 14, 15.

The support or stiffening ribs 17 have in FIG. 5 from left to right a decreasing height, so that an oblique support surface pad bridge 6 results towards Falzgrund 4, which compensates for the oblique course of Falzgrunds 4 itself, so that the support surface 8 perpendicular to the main level 7 is.

Between adjoining the recesses 14, 15 run respective webs 18 of the main body 9 of the block bridge 6. Along these webs 18 extend between the edge side Supporting or stiffening ribs 17 further stiffening ribs 19. Further stiffening ribs 20 extend along the edges along the short sides 10 of the main body 9 of the block bridge 6. The stiffening ribs 19, 20 all have the same height, which is less than the height of the lowest support or stiffening rib 17th , which is shown in Fig. 6 in cross section right.

In the course of the webs 18, the inner support or stiffening ribs 17 intersect with the stiffening ribs 19. The support and / or stiffening ribs 17, 19, 20 extend parallel to a main plane of the block bridge 6.

Fig. 6 shows the cross-sectional shape of one of the two locking lugs 13 in detail. This is limited in cross-section of two 45 ° bevels 21, 22 of different lengths, wherein the chamfer 21 shown in Fig. 6 above is longer than the bevel 22 shown in Fig. 6 below.

Fig. 7 shows an enlarged cross-sectional shape of the locking lug 12. This cross section is also limited by two 45 ° bevels 23, which have the same length in the case of locking lug 12.

Attached to the short sides 10 in one piece at the edge are retaining lugs or retaining clips 24 for securing against a displacement of the support block 5 relative to the block bridge 6.

In the window frame 1 a total of, for example, up to six or eight such block bridges 6 are installed, the arrangement of the block bridges is made depending on the type of opening or function.

The window frame 1 is mounted as follows: First, the sash profile 2 is connected at the corners and the resulting sash frame is placed on a mounting table, with that side of the rebate base 4 facing upward, in the later a glass bar 25 (see FIG ) is engaged. Subsequently, for example, six block bridges 6 are latched into the rabbet base 4 of the wing profile frame. For this purpose, each block bridge with the long side 11, which has the two locking lugs 13, set in Falzgrund 4. Then, the block bridge 6 is pivoted about a pivot axis which passes through a connecting line of the two locking lugs 13, in the rabbet base 4. By pressure on the locking lug 12 is achieved that this resiliently springs, wherein the web 16 deforms correspondingly elastic. The displacement path of the Rastna se 12 is doing so far until the locking lug 12 passes by a locking projection 26 of the Falzgrundes 4 and the block bridge 6 can engage in the Falzgrund 4 latching.

In the embodiment of FIG. 2 with a total of three recesses 14, 15 not only deforms the pressure associated with the locking lug 12 of this associated web 16, but it deform the two other webs 16 which are associated with the locking lugs 13.

In an alternative embodiment of the pad bridge 6, only the recess 14 is present, while the base body 9 is made of solid material at the location of the recesses 15. In this case, only the web 16 assigned to it deforms when pressure is applied to the detent nose 12.

After latching the block bridge 6 into the rabbet base 4, the double glazing 3 is inserted and held and positioned with the aid of the spacer or supporting blocks 5. Finally, the glazing beads 25 are snapped on. The sash is then assembled.

Claims

claims

1. block bridge (6) for supporting a surface support element in a frame (1) having a plurality of elastically displaceable relative to each other latching lugs (12, 13) for latching the block bridge (6) in a rabbet base (4) of the frame (1) in that at least one of the latching lugs (12, 13) has a recess (14, 14) extending over at least half the width (A) of the block bridge (6).

15) is adjacent, wherein between the latching lug (12, 13) and the recess (14, 15) an elastically deformable web (16) remains.

2. block bridge according to claim 1, characterized in that the recess (14, 15) is approximated to the shape of a particular equilateral triangle, wherein the

Web (16) parallel to a base of the recess (14, 15).

3. block bridge according to claim 2, characterized in that the recess (14, 15) has the shape of a spherical triangle.

4. block bridge according to one of claims 1 to 3, characterized in that each latching lug (12, 13) is associated with exactly one adjacent recess (14, 15).

5. block bridge according to claim 4, characterized by exactly three locking lugs (12, 13) each having associated recesses (14, 15), wherein two latching lugs (13) relative to a single third latching lug (12) are arranged.

6. block bridge according to claim 5, characterized in that the three recesses (14, 15) are arranged side by side, wherein the individual latching lug (12) associated recess (14) between the two other recesses (15).

7. block bridge according to one of claims 1 to 6, characterized by support and / or stiffening ribs (17, 19, 20) which extend parallel to a main plane of the block bridge (6).

8. block bridge according to claim 7, characterized in that at least one stiffening rib (19) along a web (18) between two recesses (14, 15).

9. block bridge according to claim 7 or 8, characterized in that at least one support and / or stiffening rib (17, 20) parallel to a side edge (10, 11) of the block bridge (6).

10. Framed surface support element - with a profile frame (1), in the rebate base (4) of the profile frame (1) arranged block bridges (6) according to one of claims 1 to 9.

11. A surface support member according to claim 10, characterized by on the block bridges (6) arranged spacer and / or supporting blocks (5).