EP0628690B1 - Corner support for a tilt-and-turn wing of a window, a door or the like and method for manufacturing the same - Google Patents

Abstract

A corner bearing block (2) for the pivotable and tiltable mounting of a sash/leaf of a window, of a door or the like on a fixed frame (1) comprises a basic plate (6) with screw-on holes (17 to 21), retaining bolts (15 and 16) and a bearing bolt (3) which is mounted rotatably on bearing lugs (7 and 8). Due to the production method, according to the invention, of the basic plate (6) with the bearing lugs (7 and 8), reinforcement borders (23 and 24) are provided in extension of the two bearing lugs (1 and 8). This results in the rear surface (25) of the basic plate (6) having a constant width over the entire length of the corner bearing block (2) and in a rear surface (25), in addition, being essentially planar. This configuration contributes to the considerable reinforcement and thus higher loadability and optimum attachment of the corner bearing block (2) on the frame (1). <IMAGE>

Description

The invention relates to a corner bracket for the rotatable and tiltable mounting of a wing of a window, a door or the like on a fixed frame or the like, with a screw hole base plate, the lower end of which is provided in the position of use with two mounting brackets, one of which Bearing pin is rotatably mounted in a pivoting plane perpendicular to the plane of the base plate. Such corner brackets are known in various designs (EP-A-0 421 126). In such a known embodiment, the base plate with the two mounting brackets is made of a suitable material punched out. As a result, the mounting brackets are initially in the plane of the base plate and must therefore be bent upwards by 90 °. For various reasons, particularly in terms of bending technology, a notch is punched out during the punching at the transition from the base plate to each bearing bracket. A uniform width of the finished corner bracket is thereby achieved, but this width is reduced at the transition to the bearing brackets in accordance with the depth of the notches. But there the corner bracket is particularly stressed in use. There is also the fact that in order to obtain the aforementioned uniform width over the entire length of the corner bracket, the bending of the bearing brackets has to be set at a distance from the imaginary extended edge line, that is to say somewhat offset inwards. The distance from the imaginary edge line depends on the material thickness and the bending radius. This results in the disadvantage of a curved back in the area of the bearing plates.

It is therefore the task of developing a corner bracket of the type described at the outset in such a way that it can be subjected to higher loads with the same material and material cross section, without this being associated with higher costs.

To solve this problem it is proposed according to the invention that in a corner bracket according to the preamble of claim 1 that can be put on the fixed frame Back surface of the base plate has a constant width over the entire length. Since this corner bracket has no reduction in cross-section and no corresponding notch points, it is more resilient than the previously known corner bracket with the same dimensions and the same material at the highly stressed point. Nevertheless, this corner bracket is made of a flat material, after which the bearing brackets must be bent up after punching out. However, this does not require any punching out of notches at the transition to the bearing plates if a suitable punching and bending process is used.

In a particularly preferred manner, the back surface of the base plate of this corner bracket is at least essentially flat. "Essentially flat" means that the back surface in the area of the bearing brackets is not curved, but is flat, so that the bearing block also lies flat against the spar in this area. There may be some deviations from a mathematically flat surface due to the manufacturing process, but this ensures that the entire base plate lies flat over its entire length.

A further development of the invention provides that each bearing tab directly in a reinforcing edge arranged in its plane on the front of the Base plate merges. This reinforcing edge can be due to the manufacturing process. In any case, it stiffens the base plate at its longitudinal edges, so that a higher load capacity can be achieved with the same width.

A particularly preferred embodiment of the invention results from claim 4. The resultant advantage lies above all on the assembly side. This applies in particular if the base plate is also symmetrical in the longitudinal direction with regard to the features of claim 4, i.e. when all the holes for the retaining bolts and the fastening screws lie on a straight line. In addition, this corner bracket is particularly narrow and therefore visually not very annoying.

Another important embodiment of the invention is that the one retaining bolt is arranged in the region of the bearing straps and both retaining bolts are formed by stamping. Since the bearing brackets are located at the lower end of the base plate during use, the other bearing bolt is of course located at the upper end of the base plate due to the symmetrical arrangement with respect to the transverse central plane. The diameter of the shape depends on which spar this corner bracket is to be attached to. The length is determined by the thickness of the base plate and the material properties.

In particular, in order to be able to hang the wing easily, it is advantageous if the bearing pin can be locked in a predetermined inclined position. According to a development of the invention, this is made possible by further developing the corner bracket according to claim 6. If the bearing block is brought into a rotational position suitable for engaging the latching member, it maintains it. After the wing has been hooked in, the latter can of course be tilted back while overcoming the relatively low spring force with which the latching element engages in the latching notch. If there are several locking notches, several defined holding positions of the bearing block can be achieved.

According to a preferred variant of the invention, the latching member is attached to an approximately U-shaped latching bracket, in particular integrally formed thereon, the U-legs of which are penetrated by the bearing axis of the bearing pin. When installing this corner bracket, insert the latch bracket into the space between the two bearing lugs. Then insert the bearing pin. Finally, the bearing axle is assembled. This can be provided with a transverse adjustment device in a known manner. With the mounting of the bearing axis, the locking bracket is also secured in position. If necessary, a corresponding receptacle can also be provided in the area of the base plate in question, which improves the securing of the position.

In order to reduce the manufacturing and assembly costs, it is provided in a very expedient manner that the latching element is formed by a punched-out and angularly bent tongue of the U-central web of the latching block. The latter is advantageously made of plastic with suitable material properties.

A particularly preferred embodiment of the invention results from claim 9. The advantage of this embodiment lies above all in the fact that in a series production the frame, in particular the fixed frame, can be drilled irrespective of whether the fitting parts in question later a turn fitting or a turn -Tilt hardware and whether this fitting is intended for a wing hinged on the right or on the left. Of course, in the case of a turn-tilt fitting, the corresponding hole must also be drilled for the opening-side bearing parts, which enable the sash to be tilted about the lower horizontal transverse axis. The holes for the vertical axis are always the same. In this respect, there is still no differentiation between right-hinged and left-hinged as well as between rotating sash and turn-tilt sash in a series production of the fixed frame.

The invention is further based on the object of providing a method for producing the corner bracket, according to which a stable, heavy-duty base plate with bearing tabs can be produced in a simple, quick and precise manner.

To achieve this object, a method according to claim 10 is proposed. The blank can be punched out in a known manner from a suitable material, whereby, as usual, care must be taken to ensure that the starting material is used as well as possible. The punched part can be punched at the same time as the blank is punched out or separately. Process step c) is expediently carried out as a separate process step.

The gradual upward bending of the longitudinal edges with the bearing brackets is carried out in a suitable follow-up bending tool, four bending steps being sufficient until complete upward bending by 90 °.

This stamping and bending process is the basis for the advantageous design of the corner bracket according to claims 1 to 9. It ensures that with the same dimensions of the fitting parts and use of the same materials, higher sash weights can be carried and this is possible at a lower manufacturing price. If one dispenses with higher sash weights, this means, conversely, a far reduced risk of corner bearing breaks compared to the known designs of Corner blocks. The combined bending and pressing processes naturally also lead to a corresponding solidification of the material, which benefits the increased resilience and safety. Above all, however, this method makes it possible to implement the configurations according to claims 2 and 3. Due to the largely flat contact surface of the corner bracket on the frame, there can be no undesired rocking due to rounding of the base plate, ie a rich, flat fit is also achieved in the area of the bearing tabs. Moreover, between suitable steps of the method, it is possible to provide for the riveting of holding bolts if one wants or has to do without holding bolts formed by stamping. The latter can be the case, for example, if long retaining bolts are required.

Appropriate further developments of the method result from claims 11 and 12.

Figur 1

perspektivisch die untere rechte Ecke eines festen Rahmens mit anmontiertem Ecklagerbock;

Figur 2

der Ecklagerbock der Figur 1 in perspektivischer Darstellung;

Figur 3

eine vertikalen Längsmittelschnitt durch die Figur 2 bei schrägstehendem Lagerbolzen;

Figur 4

eine der Figur 3 entsprechende Darstellung mit um 90° nach unten geschwenktem Lagerbolzen;

Figuren 5-9

verschiedene, beim Biege-Preß-Verfahren durchlaufende Stadien der Grundplatte mit den Lagerlaschen in leicht räumlicher Darstellung;

Figuren 10-13

analog zu den Figuren 5-9 vier verschiedene Stadien beim Biege-Preß-Verfahren in etwas anderer, abgebrochener Darstellung, jedoch ohne die Bohrungen der Lagerlaschen;

Figur 14

eine Vorderansicht des U-förmigen Verrastbocks mit dem integrierten Verrastglied;

Figur 15

einen Schnitt gemäß der Linie XV-XV der Figur 14.

The invention is explained below with reference to the drawing. The drawing shows an embodiment of the invention. Here represent:

Figure 1

in perspective the lower right corner of a fixed frame with a corner bracket attached;

Figure 2

the corner bracket of Figure 1 in perspective;

Figure 3

a vertical longitudinal central section through Figure 2 with angled bearing pin;

Figure 4

a representation corresponding to Figure 3 with pivoted 90 ° down bearing pin;

Figures 5-9

Various stages of the base plate with the bearing plates in a slightly spatial representation that run through the bending-pressing process;

Figures 10-13

analogous to FIGS. 5-9, four different stages in the bending-pressing process in a slightly different, broken-off representation, but without the holes in the bearing plates;

Figure 14

a front view of the U-shaped latch with the integrated latch;

Figure 15

a section along the line XV-XV of Figure 14.

In the exemplary embodiment, the corner bracket serves for rotatably and tiltably mounting a wing, a window, a door or the like on a fixed frame 1. In a so-called right-hinged wing, the corner bracket 2 is therefore located on the lower right corner of the fixed frame 1. The axis of rotation of the wing is defined by the geometric axis of the bearing pin 3 of the corner bracket 2 in its rotational position shown in FIGS. 1 and 2, and it is designated by 4 in FIG. The horizontal geometric axis of rotation 5 is predetermined by the axis of rotation of the bearing pin 3 of the corner bracket 2. Accordingly, the corner bracket 2 forms one half of a lower turn-tilt bearing. In a known manner, a bearing sleeve is attached to the wing, which is pushed onto the bearing pin, which is advantageously in a tilted position according to FIG. 3, as will be explained in more detail below. In addition to this lower corner bearing, there is also an upper pivot bearing and a lower left tilt bearing and, of course, a known opening device.

The corner bracket 2 has a flat base plate 6, on the lower end of which, in the position of use, two molded mounting brackets 7 and 8 are attached, projecting vertically to the plane of the base plate into the interior of the room. They are used for the rotatable mounting of the bearing pin 3 mentioned about the geometric axis 5. The bearing pin 3 consists of a cylindrical part which engages in the mentioned bearing sleeve of the bearing part on the wing and a bearing eye 9 attached to the lower end thereof, which is located between the bearing plates 7 and 8. Bore holes 10 and 11 (FIG. 5) for receiving a known bearing axis 12 are provided on the bearing brackets. The exemplary embodiment is a special but known bearing axis 12, with the aid of which the bearing pin 3 can be screwed in the sense of FIG Adjust double arrow 13 and thus make the appropriate correction of the sash position compared to the fixed frame. Furthermore, there are two retaining bolts 15 and 16 on the rear side, that is to say on the surface of the base plate 6 that can be placed on the surface 14 of the fixed frame 1, which are preferably assigned to the upper and lower ends of the base plate in the position of use. According to FIG. 3, they can be riveted into the base plate or formed by stampings. According to, for example, FIG. 3, the lower retaining bolt 16 is located in the area of the bearing brackets 7 and 8. Between the retaining bolts 15 and 16, countersunk screw holes 17 to 20 are preferably provided on the base plate. In a deviation from this, in the illustration according to FIGS. 5 to 9, there is a middle screw hole 21 between the outer screw holes 17 and 20. In any case, however, the screw holes are each arranged symmetrically to an imaginary transverse center plane 22 of the base plate 6. The same thing also applies to the two retaining bolts 15 and 16. A difference between the representations of FIGS. 2 and 5, which is likewise insignificant for the design of this corner bracket, is that the base plate 6 is rounded at its upper end in use in the variant shown in FIG and the reinforcing edges 23 and 24 do not extend there to the upper edge.

According to the configuration of the corner bracket according to the invention and also the method for its production, as can be seen in particular in FIG. 2, each bearing bracket changes directly into a reinforcing edge 23 or 24. In addition, according to, for example, FIG. 2, the back surface 25 of the base plate 3 (FIG. 3) that can be placed on the frame has a constant width over its entire length, i.e. it is also the same width in the area of the two bearing brackets as in the area above it, and above all, according to, for example, FIG. 13, the back surface 25 of the base plate 6 is at least substantially flat over its entire length. So there are no rounding of the back in the area of the bearing brackets 7 and 8 as can be found in the known corner brackets.

The holding bolts 15 and 16 and the screw holes 17 to 20 or 17, 20 and 21 are, as said, arranged along a longitudinal center plane of symmetry, which is shown in FIG is symbolized by line 26. Due to the additionally symmetrical arrangement with respect to the transverse center plane 22, a special drilling pattern results for the five or six holes of the variants according to FIG. 5 or FIG. 2. An identical drilling pattern can be provided for the upper pivot bearing of this turn-tilt wing and both drilling patterns symmetrical Attach to a longitudinal central transverse plane through the vertical spar of the fixed frame 1 on the bearing side. This is advantageous insofar as the frames for the right-wing and left-wing hinged can be designed in the same way with regard to these two drilling patterns or, in other words, the frame production is simplified.

The inventive method and the inventive design of the base plate 6 with the two mounting brackets 7 and 8 can be seen clearly from FIGS. 5 to 13. A blank 27 (FIG. 5) is stamped out of a suitable starting material, for example sheet steel, in a material-saving manner and has a T-shaped shape. At the same time or subsequently, the holes 10 and 11 and 17 to 20 or 17, 20 and 21 are attached to it. These holes can also be punched out and the countersinks can also be made without cutting.

According to FIG. 10, two longitudinal grooves 28 and 29, which extend over the entire length, are attached to the blank 27 near the longitudinal edge 30 and 31 of the narrow blank part, respectively extend into the two tabs for the bearing plates 7 and 8 (FIG. 5). These longitudinal grooves form bending lines during the subsequent plastic deformation. According to FIGS. 6 to 9, the outer area located on the left or right of the longitudinal groove 28 or 29 is bent up in steps by 90 ° until the parallel position of the two bearing brackets 7 and 8 is finally reached (FIG. 9). This also results in the reinforcing edges 23 and 24 extending in the extension of the bearing plates 7 and 8. According to FIG. 3, the longitudinal grooves 28 and 29 have at least largely disappeared as a result of this embossing and bending process after reaching the final stage (FIGS. 9 and 13). In this way, the largely flat back surface 25 is reached. It is obvious that this back surface may be essentially flat, but not in a strictly mathematical sense due to the deformation process.

Before bending, the retaining bolts 15 and 16 are created by stamping or, in the case of separate production, these elements are riveted into corresponding bores (FIG. 3). In the exemplary embodiment, the mounting pin 3 is attached in a known manner, which is why detailed explanations for this are unnecessary. FIGS. 14 and 15 result in a latching block 32 with a latching member 33 which is produced in one piece therewith in the exemplary embodiment. The whole is made of plastic. The locking member 33 is a cross section according to FIG approximately angular, punched out and bent out of the U-center web 34.

In the exemplary embodiment, two locking notches 36 and 37 arranged symmetrically to the longitudinal center plane of the bearing pin 3 are attached to the outer casing 35 of the bearing eye 9 (FIG. 4). If the bearing pin 3 is in a suitable rotational position, for example that according to FIG. 3, the latching member 33 can enter the associated latching notch and thereby secure this rotational position of the bearing pin 3.

15, the two U-legs 38 and 39 of the latching block 32 are provided with a hole 40, the bearing axis 12 being inserted through these coaxial holes 40, whereby the latching block 32 is held on the corner bearing block 2.

Claims (11)

1. A corner mounting bracket (2) for the turn-and-tilt mounting of a leaf of a window, a door or the like on a fixed frame (1) or the like comprising a base plate (6) which has screw mounting holes (17 to 21) and whose end which is the lower end in the position of use is provided with two mounting lugs (7, 8) on which a mounting pin (3) is mounted rotatably in a pivot plane which is perpendicular to the plane of the base plate (6), wherein the rear face (25) of the base plate (6) which can bear against the fixed frame (1) is of a constant width over the entire length, characterised in that each mounting lug (7, 8) goes directly into a reinforcing edge (23, 24) arranged in its plane, at the front side of the base plate (6).
2. A corner mounting bracket according to claim 1 characterised in that the rear face (25) of the base plate (6) is at least substantially flat.
3. A corner mounting bracket according to at least one of the preceding claims characterised in that the base plate (6) is symmetrical relative to a transverse central plane (22) and holding pins (15, 16) are arranged symmetrically relative to said transverse central plane and the screw mounting holes (17, 21) are arranged between the holding pins.
4. A corner mounting bracket according to claim 3 characterised in that the one holding pin (16) is arranged in the region of the mounting lugs (7, 8) and the two holding pins (15, 16) are formed by outwardly shaped portions.
5. A corner mounting bracket according to at least one of the preceding claims characterised in that the mounting eye (9) of the mounting pin (3) has at its outside peripheral surface (35) a plurality of detent notches (36, 37) which are displaced in the peripheral direction, for the selective engagement of a resilient detent member (33).
6. A corner mounting bracket according to claim 5 characterised in that the detent member (33) is provided on an approximately U-shaped detent bracket (32), in particular integrally formed thereon, the two limbs (38, 39) of the U-shape of which have the mounting spindle (12) of the mounting pin (3) passing therethrough.
7. A corner mounting bracket according to claim 6 characterised in that the detent member (33) is formed by a stamped-out and angularly bent tongue of the central web (34) of the U-shape of the detent bracket (32).
8. A leaf (2) of a window, a door or the like, which leaf is rotatable at least about a vertical axis (3) but is preferably mounted turnably and tiltably on a fixed frame (1), wherein the lower mounting of the turn axis side has a corner mounting bracket (2) according to at least one of the preceding claims characterised in that the drilling configurations for the upper and the lower fitments are identical and disposed symmetrically relative to the centre of the vertical frame member, at the turn axis side, of the fixed frame (1).
9. A process for the production of a corner mounting bracket (2) according to at least one of the preceding claims characterised by the following steps:

   a) stamping out the blank (27);

   b) perforating the stamping or blank (27);

   c) impressing a respective continuous longitudinal groove (28, 29) near each longitudinal edge (30, 31) of the stamping (27) at the front face thereof;

   d) bending up in stages the longitudinal edges (30, 31) with the mounting lugs (7, 8) with the longitudinal grooves (28, 29) as bending lines; and

   e) fitting the mounting pin (3).
10. A process according to claim 9 characterised in that prior to the operation of fitting the mounting spindle (12) of the mounting pin (3) the U-shaped detent bracket (32) is fitted into position.
11. A process according to claim 9 or claim 10 characterised in that the holding pins (15, 16) are pressed out prior to the fitting operation and preferably prior to step d).

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