ES2699781T3 - Hardware for windows or similar doors - Google Patents

Abstract

Hardware between a sheet (1) and a fixed frame (2) of a door, a window or the like, which is arranged hidden and includes at least one leaf bearing (3) that has a base plate (4) to fix it on the fixed frame (2) of the door or window, as well as with an extension arm (5) and a control arm (6), which are respectively joined by one end (5a, 6a) with the base plate ( 4) in a tilting manner and which can be coupled at its other end (5b, 6b) respectively in a mobile manner with the blade (1), the extension arm (5) being coupled with the control arm (6) rotatably between yes forming an X scissor, the base plate (4) being connected by forced connection with a bearing plate (7) that is movably connected with the end (5a) of the extension arm (5), presenting the plate bearing (7) a guide (8) with a central axis (9) and the guide (8) being configured as a slide in which a cylindrical guide pin (10) which is connected The extension arm (5) is guided in a mobile way, at least with a section (11), along the guide (8) in a limited way in relation to the control arm (6), being arranged in the base plate (4), in coincidence with the central axis (9) of the guide (8), a second guide (12) with a slide that houses a head portion (13) of the guide pin (10), characterized in that the second guide (12) with the guide (8) of the bearing plate (7), which is configured in an arc shape, configures in cross-section a stepped shape or a bead groove, wherein the slide (8 ) of the bearing plate (7) is completely trimmed and the slide (12) is embedded in the base plate (4) and corresponds at least to the height of the head portion (13) of the guide pin ( 10), and houses said head portion (13) in geometric connection by means of the connection of the base plate (4) and the bearing plate (7), forming a closed space.

Description

DESCRIPTION

Hardware for windows or similar doors

[0001] The invention relates to a fitting according to the preamble of claim 1.

[0002] A fitting arrangement of this type can for example constitute a blade bearing for a door leaf, a window or the like, which is arranged hidden between the frame of the blade and the fixed frame. In order to avoid a collision of the blade with the fixed frame during the opening rotation of the blade despite the internal arrangement of the blade bearing, during the opening rotation of the blade the extension arm separates the leaf frame in a direction perpendicular to the blade. main plane of the fixed frame. In addition to the movement of separation of the frame of the blade controlled by the extension arm, during the opening rotation of the blade a movement of rotation of the blade occurs, which is controlled by the control arm. In this context, the extension arm and the control arm are coupled together forming the scissor in X so that the simultaneous separation and rotation movement that occurs during the opening rotation corresponds to a desired path of the blade.

[0003] A fitting of this type is already known from EP 1788 178 B1. Known hardware acts between a sheet and a fixed frame of a door or a window. By means of a concealed arrangement of the hinge fins, the general impression of the door or of the window has to be improved. For this purpose, a bearing is provided for a door, a window or the like, with a first and a second bearing part and a control flange that is pivotably connected to one bearing part and movable with respect to the other. part of bearing in a limited manner along a guide configured in the form of an arc, the guide being configured as a slide in which is guided, at least with a section, a sliding part that is rotatably connected to the flange of control, and, during operation, at least one lateral bearing surface of the slide piece rests flatly on an inner wall of the slide.

[0004] Due to this arrangement, when the leaf is opened, it moves in its main leaf plane away from the leaf tilt bearing, so that there is no collision of the overlap with the frame.

[0005] Although the geometry of the configuration is relatively simple, due to the arrangement of the components this configuration can be fragile in case of high leaf weights, since the connections of the components present little space for a stable hold and the components have a design that is too weak in particular in the thickness of the material. This can affect the security of the door or the window, which also has a negative effect on the maximum possible weight of the sheet to be supported.

[0006] US 1920898 A discloses a bearing for a door or a window, with a first and a second bearing part and a control flange that is pivotally connected to a bearing part and can be moved with respect to the other bearing part in a limited manner along a guide configured in the form of an arc, the guide being configured as a slide in which, at least with a section, a sliding piece is guided which is connected to rotating shape with the control flange.

[0007] The arrangement is also not capable of supporting high sheet weights, since, because of the geometry, the configuration has relatively long and thin components.

[0008] Finally, EP 2615232 A2 discloses a configuration with a fitting arrangement for a door, a window or the like and with a frame part. The fitting includes a base plate for fixing it to a fixed frame of the door, the window or the like, as well as an extension arm and a control arm, which are respectively movably connected at one end to the base plate. At their other end they can be coupled respectively movably with a leaf of the door, the window or the like. The extension arm and the control arm are rotatably coupled together to form a scissor in X and can move between a closed position, which corresponds to a closed position of the blade, and an open position, corresponding to a open position by turning the blade. The extension arm is connected to the base plate by means of an intermediate connecting rod which is connected to both the extension arm and the base plate. An additional clamping device consisting of other components has to absorb the force of the weight of the blade and direct the application of the force thereof to the frame part.

[0009] Although the fitting arrangement enables the support of larger leaf weights, the fitting is expensive to manufacture due to the numerous additional components. As a result, the assembly is also more expensive, which also has a negative impact on the costs of fitting hardware.

[0010] Furthermore, according to EP 1918498 A1, a fitting according to the preamble of claim 1 is known, with a concealed hinge for the articulated mobile assembly of a leaf in a fixed frame of a window, said hinge essentially consisting of two hinge parts with a first hinge part held in the fixed frame and a second hinge part held in the leaf. The hinge parts are movably mounted to each other by means of a first arm, which is mounted at one end in a movable manner hinged with a hinge connection on the first hinge part, and which is mounted at its other end. mobile form articulated in the second hinge part. The hinge further includes a second arm, which on the one hand is movably mounted hinged with a hinge connection on said first hinge part, at a distance from the hinge connection of the first arm on the first hinge part, and on the other hand it is movably mounted with a hinge connection on the first arm, so that, in an open position of the hinge, an imaginary triangle can be defined between the hinge connections of the first and second arm with the first hinge part, on the one hand, and the hinge connection of the two arms to each other, on the other hand. A connection of the second hinge part with the first arm is outside this imaginary triangle, the free end of the second arm being provided with a swiveling sliding part which is configured to move in a groove of a plate and which is part of the second part of hinge that provides a connection mechanism to tilt the leaf with respect to the fixed frame. The plate further includes a longitudinal slot into which a pin provided in a window locking mechanism can be moved.

[0011] Due to the arrangement of the material and the thickness of the material, the configuration requires a lot of installation space and can only be assembled with little installation space by means of a subsequent processing on the sheet or the frame. On the other hand, the hardware can be modified by reducing the thickness of the material. However, in case of high leaf weights, the material savings can have a negative impact on the fitting, since the connections of known components show little space for a stable grip and the components have a too weak design in concrete in the thickness of the material. This can affect the security of the door or the window, which also has a negative effect on the maximum possible weight of the sheet to be supported.

[0012] Therefore, the object of the invention is to provide a concealed arranged hardware, which on the one hand has a simple structure, which has an improved wear resistance and which can withstand a greater weight of the blade.

[0013] This objective is solved by a fitting according to claim 1.

[0014] Therefore, the total weight of the sheet is transmitted at all times to the frame through the fixed hardware. Accordingly, by increasing the material thickness of the support elements of the base plate with the bearing plate, which at the same time correspond to the control elements for the movement of the blade, the blade forces that have to to be absorbed can be considerably larger than in the case of a mobile articulated connection with the extension arm consisting exclusively of a base plate. In addition, the articulated connection has a stronger and safer configuration by undercutting the guide pin and through the geometric connection of the head portion by means of the connection of the base plate with the bearing plate.

[0015] In another configuration it is provided that the bearing plate is connected to the base plate, resting on the visible side of the base plate facing away from the frame, away from the perpendicular frame rail forming a component, with what the material thickness of the base plate is increased by the bearing plate and enables a greater load support. In this way, a particularly stable grip on the blade can be achieved.

[0016] Advantageously, the control arm, in the end area of the side of the frame, is housed rotatably about an axis of rotation by means of a turning bearing on the base plate, and presents in the direction of the end of the blade side a gradation that is at a distance from the base plate that depends on the material thickness of the bearing plate, the control arm and the bearing plate being disposed in the closed position one on the other in the area of the connection between the extension arm and the bearing plate. By means of the overlapping arrangement of the bearing plate, the extension arm and the control arm, a particularly compact construction of the fitting arrangement is achieved. In this way, a particularly small space is required in the direction perpendicular to the axis of rotation.

[0017] In another advantageous configuration of the fitting, it is provided that the bearing plate is designed in the form of an L view from above, in which a first section configured across the width of the base plate has a first hole and receives the guide, and the second section, which faces the frame and extends approximately over half the width of the base plate, has a second hole. The configuration in the form of L allows to configure the control arm taking advantage of the necessary space to all the width of the base plate and only reduces from half of its total length due to the site required by the extensor arm. In this way, a flat support of the extension arm on the control arm is made possible in any fitting position of the fitting, and therefore stability is increased.

[0018] In order to achieve a stable and forced connection of the base plate with the bearing plate, corresponding holes are provided in the bearing plate which are placed in coincidence with holes of the base plate. In this context, the holes constitute a housing for corresponding fastening means, for example riveted bolts. A weld joint could allow another clamping possibility that guarantees a comparable secure hold between the base plate and the bearing plate. The forced union absorbs the force exerted by the weight of the blade and a torque caused by this force in the extension arm, which prevents wear or a deviation of the connection through the guide pin with the plate of bearing and base plate, and increases the stability and wear resistance of the fitting. Particularly in the case of large sheet weights, the force exerted on the fitting by the weight of the blade in the position opened by rotation is so great that the control arm could strike against the bearing plate in the closing direction. In order to allow a perfect entry, free of possible obstacles, of the blade on the fitting, the bearing plate has a cross section in a bevel on the face facing towards the blade, so that the control arm through the bevel or a radius orients the fitting or the blade in the optimal position with respect to the frame.

[0019] According to the invention, the slide of the bearing plate with the slide of the base plate is configured stepwise in cross section or as an undercut groove, the slide of the bearing plate being completely cut out and the slide being embedded in the base plate and corresponding thereto at least at the height of the head portion of the guide pin. In this way, the guide pin, which is clamped in the extension arm and is guided in the slide of the bearing plate and of the base plate, has two bearing surfaces in cross section in which the guide pin Can support in case of loading. The head portion of the guide pin, which is located in a closed space, is limited in height by the drawing and constitutes a geometric connection that keeps the guide pin in position in the area of the head portion in case of loading by the weight of the blade, in particular in the position of opening by rotation, perpendicular to the bearing plate, with which a flexion of the extension arm is avoided even in the presence of a flexion load.

[0020] To achieve the bearing surface of the guide pin, both of the center section in the bearing plate and of the head portion in the base plate, over the entire travel of the slide, the guide preferably in the form The circular arc of the bearing plate and the guide, preferably in the form of a circle arc, of the base plate may have the same pivot point. In this way, with the same pivot point of the central axis of the guides, the same movement curve and, with the same length, the same limit of rotation of the blade with respect to the frame. In addition, the linear support of the central section of the guide pin on the bearing plate and of the head portion on the base plate produces a movement development that reduces friction to a minimum.

[0021] Preferably, the extension arm has at the leaf-side end a housing, in particular a corner hinge pin, for the rotary coupling with the corner hinge arranged on the leaf. In this way, the weight of the blade can be transmitted to the extension arm. Since the extension arm in turn rests on the control arm and is therefore supported by it, the extension arm transmits the load of the sheet to be absorbed to the control arm, which in turn is housed in the control arm. the base plate as a rotating joint through a rivet connection. By means of the chosen scissor geometry there is a relatively large overlap of the extension arm with the control arm, so that the bending moments produced are advantageously reduced.

[0022] The bearing plate is preferably made of a metal strip material to reduce the bearing forces exerted by the weight of the blade and the frictional forces that occur during the displacement movement, and to increase the stability.

[0023] To simplify the assembly and through the kinematic development of the fitting, the control arm is connected in a rotatable and displaceable manner, by means of a guide pin arranged at the end of the side of the blade, with a longitudinal hole located in the crossbar of horizontal sheet of the corner hinge, a flat sheet metal being disposed between the base plate and the control arm to reduce the friction at the end of the frame side in the area of the rotation bearing. The sheet constitutes a sliding surface between the control arm and the base plate. Through this measure other lubricants become unnecessary.

[0024] According to an advantageous embodiment, the sheet has a leaf overlap that rests on the fixed frame when the leaf is closed, the fitting being arranged between the leaf and the fixed frame when the leaf is closed. Through the concealed arrangement an optically attractive fitting solution is created, and at the same time attractive due to the layout of the components and the type of kinematics.

[0025] Other advantageous configurations are apparent from the drawings. In them:

Figure 1 shows a perspective view of a lower corner of the leaf and frame of a window opened by tilting, in a view from the outside of the building, with a resistant fitting according to the invention,

- figure 2 shows the representation of figure 1 without corner of sheet,

- figure 3 shows a perspective view of a fitting according to the invention without a lower corner of the leaf and frame, - figure 4 shows a partially exploded representation of the fitting according to figure 3, - figure 5 shows a partially exploded representation of the fitting according to figure 3, - figure 6 shows a top view of the visible section of a fitting arranged horizontally in the frame, and

- figure 7 shows a section along line B-B of figure 6.

[0026] In figure 1, the sheet is identified with the reference symbol 1 and the frame with the reference symbol 2. The sheet 1 is pivotably connected to the frame 2 through a fitting. Only a lower blade bearing 3 which, together with a second upper blade bearing (not shown here), constitutes a vertical blade pivoting axis is visible here. In this context, when the blade 1 is closed, the upper and lower blade bearings 3 are concealed by a leaf overlap 30 in an intermediate crease space of the blade 1 and the frame 2. To be able to direct the weight of the blade 1 to frame 2 at all times, the lower blade bearing 3 is configured as an articulated suspension. In the closed position, the blade 1 overlaps the fixed frame 2, at least on the side of the pivot axis, with the leaf overlap 30 parallel to the main sheet plane. According to FIG. 1, the blade bearing 3 has a base plate 4 mounted on the frame 2 and a corner hinge 26 fixed on the blade 1. The holding of the blade bearing 3 on the frame 2 takes place through of housing holes located in the base plate 4 for fastening screws not shown. In order to be able to open the leaf 1, the leaf 1 has to be separated from the frame 2. For this purpose, the leaf bearing 3 has an extension arm 5 configured on the base plate 4 and a control arm 6, which are joined at each in a pivotable manner at one end 5a, 6a with the base plate 4, and which can be movably connected at each other end at their other end 5b, 6b with the corner hinge 26 mounted on the leaf 1. The extension arm 5 and the control arm 6 intersect and are connected with the base plate 4 in a rotatable manner about a pivot axis 31 to form a scissor in X. The control arm 6 is further connected to the base plate 4 of rotating shape about a pivot axis 16 through a pure turn bearing 15.

[0027] According to FIG. 3, the extension arm 5 is connected at the end 5a movably with the base plate 4 and with a bearing plate 7 held in a forced connection in the base plate 4. For this purpose, as shown in FIG. 5, the bearing plate 7 has a guide 8 configured in the form of an arc with a central axis 9. The guide 8 is configured as a slide inside which a cylindrical guide pin 10 connected with the extension arm 5 is guided, in a limited manner with respect to the control arm 6, at least with a central section 11 along the guide 8 configured in the form of an arc.

[0028] In the base plate 4 there is also located a second guide 12 with a slide, in coincidence with the central axis 9 of the guide 8, which with an enlarged extension houses the head portion 13 of the guide pin 10. Depending on the measurement adjustment between the base plate 4 and the head portion 13 of the guide pin 10, the slide 12 can form together with the slide 8 an operative lateral and support guide connection.

[0029] The bearing plate 7 is connected to the base plate 4 (FIG. 2), resting on the visible face of the base plate 4 facing away from the frame 2, away from the perpendicular frame rail 14 forming a component, whereby the material thickness of the base plate 4 is at least doubled by the bearing plate 7 and enables a greater load bearing.

[0030] According to figure 3, the control arm 6, housed in the area of the end 6a on the side of the frame rotatably about the axis of rotation 16 through the pivot bearing 15 in the base plate 4, in the direction of the end 6b on the side of the blade a gradation 17 is at a distance from the base plate 4 which depends on the material thickness of the bearing plate 7, the control arm 6 and the plate bearing 7 in the closed position - not shown - one above the other in the area of the connection between the extension arm 5 and the bearing plate 7. By the overlapping arrangement of the bearing plate 7, the extension arm 5 and the arm 6 a particularly compact construction of the fitting arrangement is achieved. In addition, a particularly small space is required in the direction perpendicular to the axis of rotation.

[0031] According to FIG. 4 to FIG. 6, it is provided in the fitting that the bearing plate 7 is configured in the form of an L view from above, wherein a first section 18 is formed in the width of the base plate. 4 presents a first hole 19 and houses the guide 12, and the second section 20, which faces the frame 2 and extends approximately over half the width of the base plate 4, has a second hole 21. The configuration L-shaped allows the control arm 6 to be configured taking advantage of the necessary space across the width of the base plate 4 and is only reduced from half of its total length due to the site required by the extension arm 5. As FIGS. 1 to 3 show, the extension arm 5 rests on the control arm 6 and on the bearing plate 7 in any fitting position of the fitting. In this way, especially in the position opened by rotation and tilted outwardly of the leaf 1, the bending stress present due to the weight of the leaf 1 is intercepted by the leaf bearing 3.

[0032] Figure 4 shows an exploded depiction of the fitting of Figure 3 in the open turning position of the blade bearing 3, in which the stable and forced connection of the base plate 4 to the plate is shown. bearing 7. For this, corresponding holes 19, 21 are provided on the bearing plate 7, which are located in register with holes 22, 23 of the base plate 4. In this context, the holes 19, 21; 22, 23 constitute a housing for corresponding fastening means (not shown), for example riveted bolts. A weld joint could also allow a secure hold. The forced connection absorbs the force exerted by the weight of the blade 1 and a torque caused by this force in the extension arm 5, thereby preventing wear or a deviation of the connection through the guide pin 10. with bearing plate 7 and base plate 4.

[0033] Starting from the position opened by tilting, shown in figure 1 to figure 3, of the leaf bearing 3 arranged in the window or in the door, to avoid a possible collision, in particular in the case of large weight As a result of the force exerted by the weight of the blade 1 during the closing process between the control arm 6 and the bearing plate 7, an inclined plane is provided, which is designed as a bevel 24 on the bearing plate 7 in FIG. cross section in the face facing towards the leaf 1, in such a way that the control arm 6 through the bevel 24 or a radius not shown orientates the fitting or the sheet 1 in the optimum position with respect to the frame 2.

[0034] According to FIG. 7, the slide 8 of the bearing plate 7 together with the slide 12 of the base plate 4 form, in a cross section, as a structural unit, a stepped or undercut groove. For this, the slide 8 of the bearing plate 7 is completely cut off, the slide 12 preferably having a cavity in the base plate 4, for example by drawing, which corresponds at least to the height of the head portion 13 of the guide pin 10. The head portion 13 of the guide pin 10 is in a closed space, resulting in two bearing surfaces for the guide pin 10. In the case of loading, the guide pin 10 held in the arm Extender 5 rests laterally on the slide of the bearing plate 7 and of the base plate 4. Furthermore, the head portion 13 of the guide pin 10 is limited in height by the embossing, so that it holds the head portion 13 when loaded by the weight of the blade 1, in particular in the rotational opening position, perpendicular to the bearing plate 7, and prevents bending in the presence of a flexion load of the extension arm 5.

[0035] To achieve the bearing surface of the guide pin 10, both of the central section 11 on the bearing plate 7 and of the head portion 13 on the base plate 4, throughout the travel of the slide, the guide 8 in the form of an arc of a circle of the bearing plate 7 and the guide 12 in the form of an arc of a circle of the base plate 4 have, according to FIG. 4, the same turning point - not shown. In this way, with the same pivot point of the central axis 9 of the guides 8, 12 the same movement curve and, with the same length, the same limit of rotation limitation of the sheet 1 with respect to the frame 2 results. Furthermore, the linear support of the central section 11 of the guide pin 10 on the bearing plate 7 and of the head portion 13 on the base plate 4 produces a movement development without friction.

[0036] The blade bearing 3 shown in FIGS. 1 to 3 has at the end 5b of the blade-side extension arm 5 a housing, in particular a corner hinge pin 25, for the rotary coupling with the hinge of the hinge. corner 26 disposed in the sheet 1. In this way, the weight of the sheet 1 can be transmitted to the extension arm 5. Since the extension arm 5 in turn rests on the control arm 6 and is therefore supported by this, the extension arm 5 transmits the load of the blade 1 to be absorbed to the control arm 6, which in turn is housed in the base plate 4 as a pivoting joint by means of the pivot bearing 15 through of a connection by rivet. By means of the chosen scissor geometry there is a relatively large overlap of the extension arm 5 with the control arm 6, so that the bending moments produced are advantageously reduced.

[0037] The bearing plate 7 is preferably made of a metal strip material to reduce the bearing forces exerted by the weight of the blade 1 and the frictional forces that occur during the movement of displacement in the guide 8, and to increase stability.

[0038] As shown in figure 2 to figure 5, to simplify the assembly and through the kinematic development of the fitting, the control arm 6 is connected in a rotatable and displaceable manner, by means of a guide pin 27 arranged in the end 6b on the side of the blade, with a longitudinal hole located - but not shown - on the horizontal leaf beam 27 of the corner hinge 26.

Furthermore, in the area of the pivot bearing 15, a flat sheet 29 is arranged between the base plate 4 and the control arm 6 to reduce the friction at the end 6a of the side of the frame. The plate 29 constitutes a sliding surface between the control arm 6 and the base plate 4. In this context, the plate 29 surrounds the base plate 4 according to FIG. 4 in the corresponding recesses, in particular in a bend 32, for positioning and clamping at the same time. With the plate 29 a sliding surface is created which reduces the friction between the control arm 6 and the base plate 4 during the operation of the fitting. The control arm 6 slides on the sheet 29 and is further supported by the sheet 29 by the bend 32 at the visible front edge of the base plate 4. At the same time, the bend 32 of the sheet 29 reduces the friction produced by the leading edges present in the base plate 4. Advantageously, a combination of materials with particularly low friction and wear values between the plate 29 and the control arm 6 can also be provided here. Through this measure they become unnecessary other lubricants Instead of the bend 32 located on three sides, another fastening - not shown - of the sheet 29 is achieved in that the plate 29 is fixed in position with bearing housing of rotation 15 on the axis of rotation 16 by means of a hole 33, and is secured against rotation with a side 34 supported on a side 35 of the bearing plate 7.

List of reference symbols

[0040]

1 Sheet

2 Marco

3 Sheet bearing

4 Base plate

5 Extendable arm

5a, 6a End of frame side

5b, 6b End of the leaf side

7 Bearing plate

8 Guide

9 Central axis

10 Guide pin

11 Section

12 Guide

13 Head portion

14 Frame stringer

15 Turning bearing

16 Spindle

17 Gradation

18 Section

19 Orifice

20 Section

21 Orifice

22 Orifice

23 Orifice

24 Bevel

25 Corner hinge pin

26 Corner hinge

27 Guide pin

28 Leaf stringer

29 Chapa

30 Leaf overlap

31 Spindle

32 Bending

33 Orifice

34 Side

35 Side

Claims (10)

1. Hardware between a leaf (1) and a fixed frame (2) of a door, a window or the like, which is arranged concealed and includes at least one blade bearing (3) having a base plate (4) for fixing it to the fixed frame (2) of the door or of the window, as well as to an extension arm (5) and a control arm (6), which are respectively joined at one end (5a, 6a) to the mounting plate. base (4) in a tilting manner and which can be coupled at its other end (5b, 6b) respectively movably with the blade (1), the extension arm (5) being coupled with the control arm (6) in such a way that rotating relative to each other forming a scissor in X, the base plate (4) being connected by forced connection with a bearing plate (7) which is movably connected to the end (5a) of the extension arm (5), presenting the bearing plate (7) a guide (8) with a central axis (9) and the guide (8) being configured as a slide in which a cylindrical guide pin (10) that is joined with the extension arm (5) is guided movably, at least with a section (11), along the guide (8) limited in relation to the control arm (6), being arranged in the base plate (4), in coincidence with the central axis (9) of the guide (8), a second guide (12) with a slide that receives a head portion (13) of the guide pin (10), characterized in that the second guide (12) with the guide (8) of the bearing plate (7), which is formed in the form of an arc, forms a stepped shape or an undercut groove in cross section, wherein the slide (8) ) of the bearing plate (7) is completely cut off and the slide (12) is embedded in the base plate (4) and corresponds at least to the height of the head portion (13) of the guide pin ( 10), and receives said head portion (13) in geometric connection by means of the connection of the base plate (4) and the bearing plate (7), forming a closed space. The fitting according to claim 1, characterized in that the bearing plate (7) is connected to the base plate (4), resting on the visible face of the base plate (4) facing away from the frame (2). ), at a distance from the perpendicular frame beam (14) forming a component, whereby the material thickness of the base plate (4) is increased by the bearing plate (7). The fitting according to claim 1, characterized in that the control arm (6), in the area of the end (6a) of the side of the frame, is housed in a rotatable manner about an axis of rotation (16) by means of a bearing (15) on the base plate (4), and presents in the direction of the end (6b) on the side of the blade a gradation (17) that is at a distance from the corresponding base plate (4), at least, the material thickness of the bearing plate (7), the control arm (6) and the bearing plate (7) being disposed in the closed position one over the other in the area of the connection between the arm Extender (5) and the bearing plate (7). The fitting according to claim 1, characterized in that the bearing plate (7) is configured in the form of an L viewed from above, wherein a first section (18) configured across the width of the base plate (4) presents a first hole (19) and housing the guide (12), and the second section (20), which faces the frame (2) and extends approximately over half the width of the base plate (4), presents a second hole (21). The fitting according to claim 4, characterized in that the holes (19, 21) of the bearing plate (7) are placed in register with holes (22, 23) of the base plate (4) and constitute a housing for corresponding fastening means, for example riveted bolts. The fitting according to claim 1, characterized in that the bearing plate (7) has a cross section in a bevel (24) on the face facing towards the leaf (1). The fitting according to claim 1, characterized in that the guide (8) in the form of a circular arc of the bearing plate (7) and the guide (12) in the form of an arc of a circle of the base plate (4) they present the same point of rotation. 8. Fitting according to claim 1, characterized in that the extension arm (5) has at the end (5b) on the side of the leaf a housing, in particular a corner hinge pin (25), for the rotary coupling with the corner hinge (26) disposed on the sheet (1). The fitting according to claim 1, characterized in that the bearing plate (7) is made of a metal strip material. The fitting according to claim 1, characterized in that the control arm (6) is connected in a rotatable and displaceable manner, by means of a guide pin (27) arranged at the end (6b) on the side of the leaf, with a hole longitudinally located on the horizontal leaf beam (27) of the corner hinge (26), a sheet (29) being arranged flat between the base plate (4) and the control arm (6) at the end ( 6a) on the side of the frame in the area of the rotation bearing (15).