EP0683295A2 - Fitting for pivoting and tiltable windows, doors or the same - Google Patents

Abstract

The scissor unit (10) connects a window casement to a fixed frame has a control arm (18) movably mounted on the pane and a bolt member (30) movably mounted on casement and interacting with a control curve (32) on an underneath side of the control arm facing the casement. The control arm has a shank angled towards the casement at least in the area of the control curve and/or in the area of an arm length adjustment device on its front longitudinal edge relative to the first tilting direction (A). The bolt member can leave and enter the area of the control curve underneath the arm unimpeded by the angled shank. The control arm at least in the area of the control curve preferably has an L, U or C shaped cross-section perpendicular to arm length direction.

Description

The invention relates to a turn-tilt fitting for windows, doors or the like, comprising a folding scissor unit connecting a wing with a fixed frame with a control arm movably mounted on the wing and a movably mounted on the wing, with a control curve on a bottom of the wing facing the wing Control arm cooperating locking member, wherein the control arm can be fixed by the locking member in parallel position on the wing to open the wing, and wherein the control arm can be released by the locking member to move the control arm in a first direction in a tilted position to tilt the wing.

Such turn-tilt fittings are known. The opening scissor unit has at least one, often also several arms, one arm, the opening arm, connecting the sash to the fixed frame, for which purpose one end is movably mounted on the sash and the other end a pivot bearing part of the upper pivot bearing of the window, the door or The like. In order to limit the possible tilt opening angle, the opening scissor unit usually has another arm, the connecting link, which is articulated to the wing and to the opening arm. In order to fix the opening arm in parallel position on the sash to open the sash, this or the connecting link is provided with the control cam, which cooperates in a corresponding manner with the locking member. Bolt link and control arm including the control cam must find space in the relatively limited installation space between the sash and the fixed frame. In a known turn-tilt fitting, this installation space is further reduced by the fact that the control curve is formed by a separate C-profile-shaped control curve part on the underside of the extension arm with attachment of the middle leg of the C-profile shape to the extension arm. The thickness of the middle leg increases the vertical installation space accordingly. In order to ensure a reliable interaction of the locking element and the control cam, only small manufacturing and assembly tolerances are permissible in relation to the mutual vertical position of the locking element and the control curve. Problems may also arise with the available installation space height (= vertical rebate clearance) in the area of an arm length adjustment device that may be provided.

The invention is based on the technical problem of providing a turn-tilt fitting with reduced vertical installation space.

To solve this problem, it is proposed that the control arm, at least in the area of the control curve and / or in the area of an arm length adjustment device, have a leg which is angled toward the wing on its longitudinal edge which is at the front with respect to the first direction.

The angled leg of the control arm leads to a substantial increase in the mechanical strength, in particular flexural strength, of the control arm in this area, so that its material thickness can be reduced accordingly. The thickness of the part of the control arm which forms the underside with the control curve and which extends in a plane containing the first direction also determines the vertical height in a corresponding manner. The angled leg does not impede the emergence or entry of the control element into the area of the control curve below the opening arm when the wing opens or tilts, since this is arranged on the specified front longitudinal edge of the control arm. The vertical installation space required in the area of the arm length adjustment device, if applicable, is reduced in the same way by the invention.

It is preferably provided that the control arm has an L-shape or U-shape or C-shape in cross section perpendicular to the arm length direction, at least in the area of the control curve. In the case of the U-shape or C-shape, the leg opposite the angled leg must be recessed accordingly for the exit or entry of the locking member. In order to obtain the specified cross-sectional shape, the control arm or the corresponding section of the control arm is accordingly produced in a profiled manner, in particular by bending sheet metal, which fulfills the essential condition of cost-effective manufacture in the mass-produced turn-tilt fitting. With special fittings, the control arm can U. also be formed by a corresponding molded part, in particular die-cast part.

The control curve can possibly be formed by the side edges of the control arm, provided that it has a C-shape in cross section. In many cases, however, it is more favorable if the control curve is formed by a separate control curve part on the underside of the extension arm next to the angled leg. The control cam part can be formed by a molded part, so that more complicated shapes can be achieved without difficulty. The cam part on the extension arm can also be designed to be adjustable essentially parallel to the first direction, so that the position of the cam can be adjusted relative to the locking element in order to ensure reliable interaction of the cam and locking part. The wing contact pressure can also be optionally corrected during assembly or after extended use.

A compact, mechanically stable design is obtained if the control part with the free edge of the angled leg is essentially Chen is flush and / or when the control part is essentially flush with the edge of the deployment arm facing away from the angled leg.

It is particularly preferably provided that the control curve part is essentially L-shaped or U-shaped in cross section with the free leg ends abutting on the control arm. So there is no leg flat on the underside of the extension arm. The locking member can therefore use the entire space below the extension arm down to the bottom. The vertical installation space required for the stay scissor unit is therefore correspondingly low, and the manufacturing and assembly tolerance for the relative position for the wing member and stay arm can accordingly be chosen to be large. The turn-tilt fitting can therefore be used with different window profile shapes and different vertical rebate clearance.

In order to be able to implement the already mentioned adjustment of the control part on the extension arm, which can also be used with advantage regardless of the above-mentioned angular shape of the extension arm, it is proposed that the control part be pivotably attached to the extension arm and optionally fixable in different pivot positions, preferably by means of an adjusting spindle engaging in a toothing of the control cam part with a spindle axis essentially parallel to the adjustment direction.

A corresponding adjustment device is provided on the extension arm for optional change of the effective extension arm length for leaf adjustment or leaf readjustment after prolonged use. This can comprise an adjusting screw, which is movably mounted in a sheet metal holding the adjusting spindle on the underside of the raising arm, with the advantage of a compact design.

For this purpose, it can be provided that the adjusting screw engages with an external thread section in an internal thread of an adjusting part carrying a pivot bearing part of the swivel joint and that the adjusting part is mounted on the extension arm so as to be displaceable in the longitudinal direction of the arm.

In order to again take up little vertical installation space, it is proposed that the adjustment part have a guide projection which engages in a guide slot of the extension arm.

Various known embodiments are possible for the locking member. However, it is particularly preferably provided that the locking member is formed by a mushroom head. In this way, a reliable cohesion of the locking member and the cam part is achieved; a deflection of the locking member from the control curve part down is excluded.

In another, simpler embodiment, the locking member can also be formed by a substantially circular-cylindrical bolt due to the increased vertical tolerance of the orientation between the locking member and extension arm according to the invention. The invention further relates to a window, a door or the like. With a turn-tilt fitting of the type described above.

• Fig. 1 eine Seitenansicht einer Ausstellschereneinheit samt Oberschiene in vertikaler Richtung auseinandergezogen im Schnitt nach Linie I-I in Fig. 2;
• Fig. 2 eine Draufsicht auf die Anordnung in Fig. 1 mit seitlichem Versatz;
• Fig. 3 einen Teilschnitt mit Anordnung in Fig. 1 nach Linie 111-111;
• Fig. 4-7 Schnittansichten nach der Linie IV-IV, V-V, VI-VI, VII-VII mit unterschiedlichen Riegelgliedpositionen; und
• Fig. 8-10 Schnitte entsprechend den Fig. 4 und 6, jedoch mit abgeändeter Form des Riegelelements.

The invention is explained below using preferred exemplary embodiments with reference to the drawings. It shows:

• Fig. 1 is a side view of a scissor unit together with the top rail pulled apart in the vertical direction in section along line II in Fig. 2;
• FIG. 2 shows a top view of the arrangement in FIG. 1 with a lateral offset;
• Fig. 3 is a partial section with arrangement in Figure 1 along line 111-111.
• Fig. 4-7 sectional views along the line IV-IV, VV, VI-VI, VII-VII with different locking member positions; and
• Fig. 8-10 sections corresponding to FIGS. 4 and 6, but with a modified shape of the locking element.

In the figures, a stay scissor unit 10 together with top rail 12 is shown as part of a turn-tilt fitting, not shown. The upper rail 12 is formed by a drive rod section 14, of which only one part is shown which has the part on the pivot bearing side (right end in the figures). The other end is coupled to a force transmission element of an upper corner deflection remote from the pivot bearing.

The top rail 12 also has a faceplate section 16 which covers the drive rod section 14 upwards and whose end, not shown in the figures, is connected to a corner angle of the upper corner deflection, which is remote from the bearings.

In the exemplary embodiment shown, the opening scissor unit 10 is formed by an opening arm 18 and a connecting link 20. The extension arm 18 is mounted with its wing-side, in the Fig. Left end on the faceplate section 16 movable in the longitudinal direction of the rail. For this purpose, the deployment arm 18 is provided with a downwardly projecting guide pin 22 which engages in an elongated hole 25 of a beveled section 16a of the faceplate section 16. The connecting link 20 is rotatably attached at one end to a hinge pin 23 on the underside 18a of the extension arm 18. Its other end is with a hinge pin 24 the faceplate section 16 articulated. 1 and 2, in order to clarify the structure, the deployment arm 18 is shown detached from the faceplate section 16 and the connecting link 20 from the deployment arm 18.

In the exemplary embodiment shown, the connecting link 20 controls a misuse protection 26 from a pawl 26b which is pivotally mounted on the drive rod via a leaf spring 26a and which interacts with a stop projection 26c on the underside of the faceplate section 16 when the connecting link 20 moves out of its parallel position according to FIGS. 1 and 2 is turned out with the window open. The drive rod section 14 can therefore not be moved beyond the stop projection 26c, to the right in the figures. When the window is closed, however, with the connecting link 20 parallel to the wing, a control pin 26d which is movably mounted in the connecting rod section 16 is pressed downward by the connecting link 20 against the pawl 26a, so that this can be moved past the stop projection 26c.

The setting of the extension arm 18 in a parallel position on the sash frame (ie parallel to the faceplate section 16) in the ready-to-turn position of the turn-tilt fitting for opening the sash about a vertical axis D is achieved by the interaction of a locking bar-fixed locking member 30 with a control curve 32 on the underside of the Extension arm 18. The locking member 30 may have the shape of a mushroom head shown in FIGS. 1-6 or may be formed by an essentially circular cylindrical bolt (locking member 30 ') corresponding to FIGS. 8-10.

It can be seen that the locking member 30 passes through an elongated hole 34 in the faceplate section 16 and is riveted to the drive rod section 14.

The locking member 30 does not necessarily have to be provided on a top rail 12. It can also be part of an upper corner drive on the pivot bearing side. For this purpose, the patent application filed on the same day as the present application with the title "Fitting system for windows, doors or the like that can be attached automatically" referenced, the content of which is part of the disclosure content of the present application. Furthermore, this corner deflection together with the folding scissor unit 10 described here can also be attached to the wing in an advantageous manner with the assistance of automatic assembly machines according to the German patent application also filed on the same day with the title "Method for automatic assembly-assisted mounting of fitting parts on the wings of a window of a door or Like. "; their content also belongs to the disclosure content of the present application.

1 to 3, the possible adjustment positions of the locking member 30 are indicated, namely with the solid outline the tilt ready position KS and with broken outline the rotation ready position DS and the locking position VS. In the locking position VS and the ready-to-turn position DS, the locking member 30 is located within an elongated hole 38 of a control curve part 40 forming the control curve 32 on the underside 18a of the control arm 18. The control arm 18 can therefore not pivot from its parallel position about its wing-side end (bolt 22) . It is attached to the wing. In the tilt-ready position KS, on the other hand, the extension arm 18 can pivot about its wing-side end until it assumes a tilting position 18 ′ which is defined by the length of the connecting link 20 and the length of the elongated hole 25 and is indicated by the broken line in FIG. 2. An arrow A symbolizes the direction of movement. This movement is possible because the locking member 30 is moved out of the elongated hole 38 in the tilt position KS and thus releases the opening arm 18.

The extension arm 18 is formed by a first section 42, which carries the bolts 22 and 23, in the form of a flat profile sheet metal strip and by a second section 46, rigidly connected to it by means of two connecting rivets 44, in the form of a sheet metal strip with an L profile (FIGS. 4 to 7) ). The sheet thickness b of the second angled section 46 is approximately 1/3 to 1/2 of the sheet thickness a of the first section 42. This reduction in sheet thickness is possible because the leg 46a protruding downward for the required mechanical strength, in particular bending stiffness , cares. The leg length c of the leg 46a is approximately 1/3 of the width d of the extension arm 18 (i.e. the horizontal leg 46b of the L-profile shape).

The control part 40 is fitted into the space formed between the legs 46a and 46b, so that the rectangular cross-section which can be seen in FIGS. 4 to 6 results with a substantially flush termination with the outer edges of the legs 46a and 46b. 1 and 3, the control cam part 40 is stepped on its upper side, with a thicker main section 40a and a left-hand bearing section 40b in FIGS. 1 and 3. The main section 40a bears on the underside 18a of the deployment arm 18, ie on the underside of the leg 46b. Its overall height thus corresponds to the leg length c in FIG. 7. The bearing section 40b, on the other hand, has a reduced thickness and lies on the undersides of the connecting rivets 44. A rivet bolt 48, which extends between the two connecting rivets 44, connects the bearing section 40b around the The rivet pin axis B is rotatable with the deployment arm 18. The bearing section 40b is provided with a semicircular rounded end in accordance with FIG. 3 in order to permit rotation about the axis B in spite of the laterally adjacent leg 46a.

At the opposite end of the control cam part 40, an adjusting spindle 50 is rotatably mounted within a block 52 about an axis C perpendicular to the longitudinal direction L and parallel to the leg 46b. It engages in a correspondingly designed toothing 54 at the end of the main section 40a of the control cam part 40 facing it. By turning the spindle 50 by means of a turning tool inserted into a polygonal recess 50a on the spindle end facing away from the leg 46a, the control curve part 40 can be pivoted clockwise around the axis C, for example in FIG. 3; a corresponding pivot position 40 'is indicated in FIG. 3 with a dotted outline. In order to be able to pivot relative to the extension arm in the opposite direction from the parallel position of the control cam part 40 shown in FIG. 3, the main section 40a is formed towards the spindle 50 with side surfaces 56 that converge slightly towards one another.

The main section of the control cam part 40 has a central recess 60 which extends parallel to the longitudinal direction of the control cam part 40. It is open at the top in FIGS. 4 to 6 or is covered by the leg 46b. Due to the recess 60, the cross-sectional shape that can be seen in FIGS. 4 to 6 is obtained (U shape open at the top). The left side leg 62a of the U-shape lies against the leg 46a or is at a corresponding horizontal distance from it, depending on the setting by the adjusting spindle 50. The opposite side leg 62b is more or less exactly flush with the edge of the leg 46b. In the center leg 62c of the U-shape, the already mentioned elongated hole 38 is formed, which extends in the longitudinal direction of the control cam part 40 and opens out freely at its left end in FIG. 3 to the lower edge of the control cam part 40 in FIG. 3. Since here also the side leg 62b is completely interrupted by a recess 64, in the tilt-ready position KS of the locking member 30 according to FIG. 4, the control part 40 together with the deployment arm 18 can be easily moved away from the locking element 30 in the direction of arrow A. As already mentioned, this movement occurs when the sash is tilted open.

4 to 6 demonstrate that the locking element 30 can assume different height positions relative to the extension arm 18 without endangering the functional reliability. The tolerance range corresponds to the leg height c minus the thickness e of the middle leg 62c and minus the height f of the diameter-enlarged head 30a of the mushroom-shaped locking member 30.

The latter deduction value f does not apply if a locking member 30 'in the form of an essentially circular-cylindrical bolt is used in the embodiment according to FIGS. 8 to 10.

In order to ensure that the locking member 30 or 30 'can be retracted smoothly into the control part 40 when the wing is tilted, even if the locking element 30 is still somewhat higher than the control part 40 as shown in FIG. 5, as can be seen in FIGS. 4 and 8 is indicated, the edge of the leg 46b may be provided with a corresponding pointing chamfer 66.

In order to be able to optionally change the effective length of the extension arm 18, in particular even if the sash should have lowered after a long period of operation, the end of the extension arm near the axis of rotation, i.e. An adjusting device 70 is provided at the corresponding end of the angled section 46. This is formed by an adjusting screw 72 which, in the block 52 already mentioned, is rotatable about an axis E parallel to the longitudinal direction L of the raising arm 18, but is axially immovable. For this purpose, the adjusting screw 72 is inserted into a corresponding cylindrical bore in the block 52. The axial fixing takes place, for example, by means of two pins 74 which are parallel to one another and which engage in a circumferential groove 72a of the adjusting screw 72 and are inserted into the block 52. Two further pins 76 serve to guide the adjusting screw 42 laterally.

An external thread section 72b at the right end of the adjusting screw 72 in FIG. 3 engages in a corresponding, continuous internal thread of an adjusting part 78. The adjustment part 78 has a leg 78a projecting downward in FIG. 1. 2, which is formed at its free end with a bearing sleeve 80a as part of the upper wing pivot bearing 82. In FIG. 7, the part 80 is for the sake of simplicity omitted.

In order to guide the adjustment part 78 on the deployment arm in a space-saving and reliable manner, the adjustment part 78 is designed with a guide projection 78b projecting upwards. 7 engages in a slot 84 in the leg 46b. The slot runs in the longitudinal direction L and is dimensioned such that the desired adjustment play for the effective length of the extension arm 18 is available. For length adjustment, the adjusting screw 72 is to be turned accordingly by means of a turning tool inserted into a polygonal recess 72c at the outer end of the adjusting screw 72. Also will when mounting the sash on the fixed frame, the control cam part 40, if necessary, is pivoted out of its illustrated parallel position by rotating the spindle 50 in order to ensure reliable interaction between the control cam part 40 and the locking member 30, in particular correct sash pressure.

Overall, a folding scissor unit with locking element on the top rail or a corner deflection, which is characterized by simple producibility, high mechanical stability and small installation space requirement, is obtained.

Claims (18)

1. Tilt-and-turn fitting for windows, doors or the like, comprising a stay scissor unit (10) connecting a wing to a fixed frame with a control arm (18) movably mounted on the wing and a movably mounted on the wing with a control cam (32) on an underside (18a) of the control arm (18) facing the wing cooperating locking member (30), wherein the control arm (18) can be fixed in parallel position on the wing by the locking member (30) in order to open the wing, and wherein for tilting opening of the wing Control arm (18) can be released by the locking element (30) for moving the control arm (18) in a first direction (A) into a tilted position (18 '), characterized in that the control arm (18) at least in the region of the control curve (32) and / or in the region of an arm length adjustment device has on its front longitudinal edge with respect to the first direction (A) an angled leg toward the wing. 2. Turn-tilt fitting according to claim 1, characterized in that the control arm (18) at least in the region of the control curve (32) in cross section perpendicular to the longitudinal direction of the arm L-shape or U-shape or C-shape. 3. Turn-tilt fitting according to claim 1 or 2, characterized in that the control cam (32) is formed by a separate control cam part (40) on the underside (18a) of the control arm (18) next to the angled leg (46a). 4. Turn-tilt fitting according to claim 3, characterized in that the control part (40) with the free edge of the angled leg (46a) is essentially flush. 5. Turn-tilt fitting according to claim 3 or 4, characterized in that the control part (40) with the edge of the control arm (18) facing away from the angled leg (46a) is essentially flush. 6. Turn-tilt fitting according to one of claims 3 to 5, characterized in that the control part (40) is substantially L-shaped or U-shaped in cross section, with the free leg ends on the control arm (18). 7. Turn-tilt fitting according to one of claims 3 to 6 or the preamble of claim 1, characterized in that the control part (40) or a control cam (32) carrying a separate control part on the control arm (18) substantially parallel to first direction (A) is adjustable. 8. Turn-tilt fitting according to claim 7, characterized in that the control part (40) on the control arm (18) is pivotally attached and can be fixed in different pivot positions. 9. Turn-tilt fitting according to claim 8, characterized in that the control cam part (40) has a toothing which is rotatable in an on the underside of the control arm (18), but axially immovable adjustment spindle (50) with the first direction ( A) engages essentially parallel spindle axis (C). 10. Turn-tilt fitting according to one of the preceding claims, characterized in that the control arm designed as an extension arm (18) is designed with an adjusting device (70) for changing the effective extension arm length. 11. Turn-tilt fitting according to claim 10, characterized in that the adjusting device (70) comprises an adjusting screw (72) which in a the adjusting spindle (50) holding block (52) on the underside (18a) of the extension arm (18th ) is movably mounted. 12. Turn-tilt fitting according to claim 11, characterized in that the adjusting screw (72) with an external thread portion (72b) engages in an internal thread of a pivot bearing part (80a) of the turn-tilt fitting adjusting part (78) and that Adjustment part (78) is mounted on the extension arm (18) so as to be displaceable in the longitudinal direction of the arm (L). 13. Turn-tilt fitting according to claim 12, characterized in that the adjusting part (78) has a guide projection (78b) which engages in a guide slot (84) of the extension arm (18). 14. Turn-tilt fitting according to one of the preceding claims, characterized in that the locking member (30) is formed by a mushroom head. 15. Turn-tilt fitting according to one of claims 1-12, characterized in that the locking member (30 ') is formed by a substantially circular cylindrical bolt. 16. Tilt-and-turn fitting according to one of the preceding claims, characterized in that the control arm (18) is designed as an opening arm connecting the wing to the fixed frame (18) and a first section formed by a flat profile (42) and one second section (46) formed by an L-profile is formed in the area of the control cam (32). 17. Turn-tilt fitting according to claim 16, characterized in that the material thickness (b) of the second section (46) is approximately 1/3 to 1/2 times the material thickness (a) of the first section (42) . 18. Window, door or the like. With a turn-tilt fitting according to one of the preceding claims.

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