FR2806436A1 - Opener for building window or door comprises arm with first end rotatably linked around rotary axis of pane or panel and second arm forming scissors linkage - Google Patents

Abstract

The window or door opener for a rotary/tip pane or panel (1), has an arm (23), the first end of which is rotatably linked around the rotary axis of the pane or panel. Its second end is rotatable and displaceably fixed to the pane or panel. An additional arm (24) is rotatably linked to the opening arm (23) between its two ends and to the pane or panel. An arrangement is provided with a guide slot (39) and a bolt (38) fixed to the pane or panel, which is movable by an operating gear for pressing the pane or panel to and fro within the guide slot. The guide slot is open at one end and the bolt within the guide slot fixes the pane or panel in a specific tip position near to the closed position.

Description

CROSS-ARM ARTICULATION FOR SWINGING FITTINGS

  The present invention relates to a leaf projection system for windows or doors with swinging leaves comprising a projection arm, the first end of which can pivot around the pivot axis of the leaf, while its other end is fixed to the leaf in a manner to be able to both pivot and move, an additional arm fixed so as to pivot on the one hand around a pivot between the two ends of the projection arm and on the other hand around a pivot on the leaf, thus an arrangement comprising a guide slot and a bolt fixed on the leaf, this bolt being able to move in the guide slot under the effect of a control mechanism, this arrangement being used to move the leaf away from or closer to the frame through

forced command.

  A projection device of this type is known, for example, from the documents DE 33 45 870 C3

and DT 1,708,852.

  In both cases, at least one bolt can be moved by a connecting rod along a cam inside one of the arms of the cross-arm joint, composed of a projection arm and a additional arm, this movement producing the forced opening and / or closing of the leaf under the effect of the actuation of a control member which is, in

  as a rule, the window handle.

  The advantage of forced control systems of this type is that they prevent almost any improper handling of the leaf. On traditional-designed leaves, the advantage of which is that forced control systems of this type have almost no improper handling of the leaf. On traditional design leaves whose tilting is controlled manually, the leaf may open unexpectedly in the direction of tilting, for example following a gust of wind,

  which can damage the crossed arms joint.

  In addition, the window handle can be turned from the tilting position to the pivoting position of the leaf before the leaf is completely closed. These two drawbacks are excluded in a system where the leaf opening movement is effected by a forced command. Any opening or closing of the leaf without rotation of the window handle is excluded due to the coupling between the movement of the rod fitting and the tilting position

leaf.

  In addition, the forced control facilitates the

tilting of heavy leaves.

  The disadvantage of the forced control of the tilting movement is the very tedious and expensive design of the fitting required for this purpose. Since the connecting rod fitting comprising a projection device according to the prior art must not only move locking bolts in their corresponding housings but also serve as a means of transmitting forces, it must be very robust. This applies analogously to the arms, bolts and pivots and other fittings, especially in the area

of the joint with arms crossed.

  -3- The object of the present invention is to propose a projection device of the type described in the preamble which makes it possible to produce a fitting more

  simple and more economical leaf.

  This object is achieved by the device according to the present invention which is characterized in that the guide slot is open at one end, in that the bolt is immobilized in the guide slot of the leaf in a tilting position which is located close to the closed position and in that the leaf tilting is released after the bolt comes out of the open end of the slot

guide.

  Because the guide slot is only open at one end, the forced control only acts on the leaf within a certain range of its tilting movement. The forced control preferably comprises a pivoting range which displaces the upper profile of the leaf by approximately 8 to 12 mm relative to the upper profile of the frame. Then, the bolt comes out of the guide slot, which releases the leaf opening movement at its

  upper edge under the effect of a manual command.

  In this case, the leaf can switch to the open or closed position. Consequently, the window fitting according to the present invention corresponds to a conventional manually operated tilt-and-turn fitting, but it includes the additional functionality that the upper edge of the leaf can be moved about 1 cm away from the frame so as to produce a slit-shaped opening. This slit-shaped opening ensures continuous ventilation of the room without letting in or

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  excessive volume of cold air or rainwater

through the ajar window.

  According to a preferred embodiment of the projection device, the guide slot used to obtain the slot-shaped opening is arranged on an additional arm molded in one piece on the projection arm. The additional arm and the projection arm constitute, in this case, a bar or rail-shaped element connected by a pivot to the other projection arm in the central zone of the latter. One of the two ends of this element is fixed by a pivot to the cover plate of the connecting rod fitting arranged in the rebate of the upper chassis, while the other free end of this element constitutes the arm of

  extension and includes the guide slot.

  To obtain the projection movement, it is preferable that the open end of the guide slot is oriented at an angle with respect to the longitudinal axis of the extension arm, this cross section of the guide slot being contiguous with a section. straight oriented parallel to the longitudinal direction of the extension arm and preferably located in its central area, this straight section allowing the bolt moved by the connecting rod to slide further when the connecting rod control mechanism is switched to the pivoting position of the leaf and in the leaf closed position

  o the latter is locked in the chassis.

  The molding of an extension arm on the additional arm makes it possible to avoid any weakening of the material of the additional arm by the guide slot, this additional arm carrying part of the mass of the leaf when the latter is open in the tilting position. The control of the projection device according to the present invention is preferably carried out by a bolt coupled to a song mechanism by means of a connecting rod and angle mechanism, the control of this song mechanism is effecting by the rotary movement of the door or window handle, the connecting rod mechanism comprising connecting rods located at least in the upper rebate and in the pivoting rebate of the leaf, when the leaf is in the pivoting position. A tilting pivot is fixed on the connecting rod which is in the pivoting rebate of the leaf and this, in the area of the lower corner of the leaf, this tilting pivot being introduced into a housing fixed on the lower part of the frame when the handle is turned from the pivoting position to the tilting position. During the introduction of the tilting pivot into its housing under the effect of the connecting rod, the tilting pivot preferably causes a movement of separation of the lower angle of the leaf relative to the plane of the frame. This movement has the consequence that the tipping point of the tilting pivot is moved in the direction of the opening. This causes on the one hand the approach of this tilting point to that of the housing in the other lower corner of the leaf, this housing generally being attached to the surface of the

  leaf; on the other hand, the leaf cover, that is

  say the strip placed all around the leaf to cover the surface of the frame, is slightly -6- moved so as to move away from the surface of the frame. This prevents the lower edge of the cover from hitting the surface of the frame when the leaf tilts. Consequently, this solution makes it possible to tilt the window without risk of damage even if the tilting pivot is guided by its housing without the lower edge of the cover striking the surface of the cover and damaging the latter. In addition, the opening movement of the tilting pivot results in the housing of the tilting pivot producing a slot of a certain width also at the bottom corner. The kinematics of the pivot pivot housing are optimized if the pivot pivot is moved a distance of 5 to 10 mm in the direction of the opening when the connecting rod is moved from the pivot position of the leaf to the tilt position of this last. Thus, the fittings produce, in a synchronous manner with the opening movement of the joint with the arms crossed, a slit opening on almost the entire periphery of the leaf, the relative movement between the leaf and the frame being only absent in the area of the fixed corner housing. As mentioned above, the slit with a width of approximately 5 to 10 mm over practically the entire periphery makes it possible to obtain a pleasant ventilation of the room while avoiding too excessive a draft and too strong cooling of

  the air of the room thanks to the narrow width of the slot.

  As a general rule, the manually operated oscillating swing fittings are controlled by a 180 ° rotation movement of the 7-window or door handle, the pivot axis of which is

  oriented perpendicular to the plane of the leaf.

  When the handle is facing down, the

  leaf is closed and locked in the frame.

  When it is facing upwards, the leaf can tilt in the vertical direction. When it is oriented horizontally, the leaf fitting is put in the pivoting position where the leaf can pivot vertically around its pivot axis

lateral.

  The ventilation slot produced using the projection device according to the present invention is preferably produced in an intermediate position of the handle where it is located approximately in the central angular range between the vertical position (tilting of the leaf)

  and the horizontal position (pivoting of the leaf).

  In this position, the tilting pivot, inserted in its housing, is in a position where it is spaced from the chassis, while the bolt is in the section of the guide slot which allows the leaf to be moved a few millimeters from the chassis without completely releasing the

subsequent tilting of the leaf.

  The projection device according to the present invention is preferably coupled with a system for locking the tilting movement which excludes any rotation of the handle from the tilting position to the pivoting position of the connecting rod fitting when the leaf is in the tilted position. . To achieve this locking, a movable constraint element which can move against the force of a return element is disposed at -8 the cover plate of the connecting rod fitting which is in the upper rebate, this element constraint cooperating with a latching element on the connecting rod. In the tilting position of the connecting rod fitting, when the leaf is in the tilted position, the latching element engages in the latching element of the connecting rod. This locking element of the connecting rod is preferably made

  in the form of a recess or a simple groove.

  In this latching position, any movement of the connecting rod in the longitudinal direction and, consequently, any rotation of the handle from the tilting position to the pivoting position of the leaf is blocked. When the leaf is closed, the latching element is pressed into an unlocked position by one of the arms of the cross-arm joint, position o it does not engage with the latching element of the connecting rod. Consequently, the tilting lock has the effect of preventing any movement of the connecting rod as long as the leaf is in the tilting position. It is only at the moment when the leaf is closed, that is to say at the moment when the arms of the cross-arm joint are located substantially above the cover sheet of the connecting rod fitting and o l the snap-in element is pressed in the unlocked position that the connecting rod can move, the arms of the cross-arm joint being locked with the cover plate of the connecting rod fitting by bolts

lock.

  Preferably, a control journal is arranged on one of the arms of the cross-arm joint, this journal pressing against the bearing face of the latching element when the joint is closed. crossed arms. The latching element is preferably fixed by a pivot on the cover plate, the restoring force being produced by a spiral screw, one end of which is connected to the cover plate and

  the other to the snap-in element.

  In the optimal case, the cross-arm joint rests against the latching element in the region of the articulated assembly between the projection arm and the additional arm, since in this region even a slight opening of the leaf causes a fairly significant relative movement of the arms of the joint relative to the cover sheet. Although the projection device according to the present invention comprises, in the optimal case, simultaneously the system producing the slot-shaped opening and the system for locking the tilting movement, any specialist will easily understand that both the system producing the opening in the form of a slot that the system for locking the tilting movement constitutes a definite advantage compared to oscillating swing fittings of the known type for windows or doors. Therefore, a hinged cross-link fitting mounted in the upper leaf rebate can be provided with a tilting movement locking system of the type described above which does not produce the leaf offset by forced control during passage of the leaf position in

tilt position.

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  The present invention is described below using several embodiments and with reference to the accompanying drawings. There is shown: - Figure 1: top view of a swing sash window; - Figure 2: the different elements of an oscillating swing fitting according to the state of the art for the window shown in Figure 1; - Figure 3: top view of the upper part of the fitting comprising a joint with arms crossed according to the present invention, this joint being shown both in the locked position and in the tilting position; - Figure 4: side sectional view and in the closed tilting position of the fitting of Figure 3; - Figures 5 to 9: top view of the fitting according to Figure 3 according to the different positions of the connecting rod mechanism; - Figure 10: top view of another embodiment of the fitting according to the present invention comprising an articulation with crossed arms and a system for locking the tilting movement in the tilted position; - Figure 11: fitting according to Figure 10 in the closed position; - Figure 12: sectional view of an enlarged detail of the tilting lock of the fitting according to Figures 10 and 11; - Figure 13: locking system of the tilting movement enlarged and seen from above; - Figure 14: top view of a variant of the pivot pivot housing according to the present

invention.

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  The window sash 1 shown in FIG. 1 is framed by a window sash 2 and comprises a window handle 4 disposed on the left sash profile 3. The right sash profile 5 is fixed to the right sash profile 8 by an upper hinge joint 6 and a lower corner housing 7. If the window handle 4 to 90 is turned to the right to bring it into a horizontal position, the leaf 1 can pivot around the pivot axis vertical 9 which passes through the upper hinge joint 6 and the

lower corner housing 7.

  If, in the closed position of leaf 1, the handle 4 is turned upwards in a vertical position, a tilting housing located in the lower left corner of leaf 1 is locked so that leaf 1 can tilt around the axis horizontal tilting 10 oriented along the

lower edge of the leaf.

  FIG. 2 shows a conventional system of link fittings enabling this type of oscillating movement to be achieved. This system comprises the articulations fixed on the chassis 2, that is to say: the articulation with upper hinge 6 and the lower corner housing 7, these two elements making it possible to carry out the oscillating movements. In addition, the system includes a connecting rod fitting inserted into each rebate of the four profiles of the leaf. The rod fitting essentially comprises a song mechanism 11 into which the square section axis of the handle 4 is introduced, this mechanism driving a rod hidden by a cover sheet 12 and inserted into a

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  groove in the rebate of the left leaf profile 3. The cover plate 12 and the connecting rod hidden by the latter can have variable lengths depending on the height of the leaf. In the end region of the pivot rebate, the connecting rod is connected to connecting rod sections which move closure pins 13 in the longitudinal direction of the rebate, located at the upper and lower ends of the pivot rebate. Another closing pin 13 located in the central region of the rebate is disposed near the edge mechanism 11. Housing 14 is provided for the upper closing pin 13 and the central closing pin 13, these housings being fixed in the opposite rebate face of the window frame. A closing element 15 'is located in the lower section of the frame rebate, this closing element comprising, according to the state of the art, an upper housing 16' provided for the upper closing pin and a housing

  lower 17 'provided for a tilting pivot 18.

  The illustration shows that the pivot pivot 18 is held in the housing 17 'while having a relatively large clearance so that it can move in this housing, when the leaf 1 is tilted in the open position, within a range of several millimeters in the direction perpendicular to the

chassis plan.

  A bevel gear 19 is mounted in the area of the lower angle to return the vertical movement of the connecting rod controlled by the edge mechanism 11 by a horizontal movement of the connecting rod 20 disposed in the lower rebate of the leaf. An additional closing pin 13 is arranged on the

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  connecting rod 20, this journal cooperating with a journal housing 14 fixed in the lower rebate of the chassis. Another angle gear 21 ensures the coupling between the connecting rod disposed in the pivoting vertical rebate and a joint with crossed arms 22 'fixed in the upper rebate of the leaf and comprising a projection arm 23' whose end is fixed on the chassis by the upper hinge joint 6 so that it can pivot. An additional arm 24 'is fixed by a pivot in the central area of the projection arm 23'; it is held in the cover sheet 25 of the upper leaf rebate so that it can slide in this sheet. If the leaf is open in the direction of pivoting, the projection arm 23 ′ is locked with the cover plate 25 by locking pins controlled by the connecting rod mechanism so that the upper edge of leaf 1 is held in the upper hinge joint 6 while being able to pivot in the latter. In the tilting position of the fitting, the projection arm 23 ′ can move relative to the cover plate 25 so that the upper edge of the leaf 1 can move away from the window frame 2 by a tilting movement. Figure 2 shows the fitting in the tilting position. An additional bevel gear 26 returns the movement of the edge mechanism 11 on a second vertical rod 27 whose vertical movement causes, in the closed position of the window, the locking between additional closing pins 13 and their respective housings 14. Figure 3 shows a variant of the cross arm joint 22 according to the present

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  invention and this, in two positions which, in reality, can only present themselves alternately but not simultaneously (as illustrated in Figure 3). These two positions are the pivoting position of the fitting, that is to say the position o the projection arm 23 is locked with the cover plate 25 of the fitting, on the one hand, and the tilting position o The articulation with crossed arms 22 is in the unfolded position and maintains the upper edge of the leaf at a given distance from the plane of the frame, on the other hand. The cover plate 25 encloses a groove formed in the upper rebate of the leaf 1 so that the position of this groove is substantially identical

  to that of the upper rebate of leaf 1.

  As mentioned above, one end (namely the right here) of the projection arm 23 of the cross-arm joint 22 is connected to the upper hinge joint 6 so as to pivot in the latter, while its other end is fixed in the cover sheet 25 of the upper rebate of the leaf by a junction pivot 28 so as to be able to both pivot and move. An additional arm 24 is fixed substantially in the middle of the projection arm 23 by an articulation bolt 29 so as to pivot around this bolt, the end of the additional arm being connected to the cover plate 25 by an articulation bolt 30 additional so as to pivot around the latter. A connecting rod 31 moves under the cover plate 25 in the rebate

upper leaf.

  Locking bolts 32 and 33 are connected to the connecting rod 31. When the locking mechanism

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  tilting is locked, the locking bolts 32, 33 are located in their respective housings 34, 35 formed in the underside of the projection arm 23. This position of the locking bolts 32, 33 is illustrated in the upper part of FIG. 3 , in Figure 4 and Figures and 6. Figure 5 shows the position of the fitting system in the fully closed position, the handle 4 (left in Figure 5) being oriented vertically downwards. The locking bolts 32, 33 are located near the closed end of their housings 34, 35. Figure 6 shows the fitting in the leaf pivoting position. In this position, the locking bolts 32, 33 are still in their housings 34, 35 but near the funnel-shaped ends 36, 37 of the housings 34, 35. If the rotational movement of the handle 4 is continued , the locking bolts 32, 33 come out of their housings 34, 35 so as to be completely free, thus releasing the tilting of the leaf (see FIG. 9 or the lower part of FIG. 3). In this position, the handle 4 is

  oriented vertically upwards (see figure 9).

  Another element fixed to the connecting rod 31 is the bolt 38 used for the forced control of the opening movement of the joint with crossed arms 22 causing the leaf to tilt. This bolt 38 is introduced into a guide slot 39 formed in an extension arm 40 molded in one piece on the additional arm 24. The guide slot 39 is open at one end. Starting from the open end, this slot comprises a first oblique section 41 inclined with respect to

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  the longitudinal extension axis 40. This oblique section 41 is contiguous to a straight section 42. The function of the guide slot 39 in combination with the bolt 38 is notably illustrated in FIGS. 5 to 9. In the closed position of the leaf ( 5), the bolt 38 is located on the side of the closed end of the guide slot 39 so as to immobilize the extension arm 40 and, consequently, to block the cross-arm joint 22 inside the upper leaf rebate. The projection arm 23, the additional arm 24 and the adjacent extension arm 40 are oriented parallel to each other and parallel to the longitudinal axis

  of the connecting rod 31 and of the cover plate 25.

  When the handle 4 is turned to the position where the leaf opens in the direction of pivoting (FIG. 6), the bolt 38 moves towards the oblique section 41 while remaining in the straight section 42. At the same time, the bolts of locking 32, 33 remain in their housings 34, and the joint with crossed arms remains blocked in the closed position. If, in this situation where the leaf is closed on its chassis, the handle 4 is continued to rotate, the bolt 38 slides towards the open end of the guide slot 39 (see FIG. 7) and passes into the section in bias 41 of the guide slot 39, which causes the pivoting of the extension arm 40 and, consequently, of the additional arm 24 molded in one piece on the latter, relative to the connecting rod 31 and, consequently, relative at the upper leaf rebate. This pivoting causes the opening of the cross-arm joint 22 to open so that the upper rebate of the leaf moves from

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  a few millimeters (preferably less than mm) from the chassis plane. During this movement, the bolt 38 remains in the bias section 41 so as to prevent any free tilting of the leaf. Figure 7 shows the bolt 38 in a substantially central position of the bias section 41. Figure 8 shows the bolt 38 near the end of the bias section, just before the position where it releases tilting of the leaf. In this position, the locking bolt 32 also ensures that the leaf is retained because it is introduced into the funnel-shaped end 36 of the corresponding journal housing 34. In this situation, the angular position of the handle 4 is substantially an intermediate position between the horizontal position where the leaf opens in the direction of pivoting (FIG. 6) and the vertical position where the leaf opens in the direction of

tilting (figure 9).

  If the handle 4 is turned upwards in the tilting position (FIG. 9), the bolt 38 comes out of the guide slot 39 and the cross-arm joint 22 can unfold in the position of

  maximum tilting (illustrated in figure 3).

  In parallel, the locking bolts 32 and 33 come out of their respective housings 34 and 35.

  The slot opening obtained by the position of the handle illustrated in Figures 7 and 8 o the upper edge of the leaf exceeds the plane of the frame by about 8 mm allows to obtain continuous ventilation of the room provided with this window without cause an unpleasant draft and / or excessive temperature drop. The width of the

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  opening slot can increase from the upper edge of the leaf downwards by replacing the closing element 15 'illustrated in FIG. 2. FIG. 14 shows a closing element 15 of new design which comprises, in its lower part, a housing pivot pivot 17 with an upper bias section 43 and a lower vertical section 44. If the handle 4 is turned from the pivot position to the leaf tilt position, the pivot pin 18

  illustrated in Figure 2 slides into this housing 17.

  In parallel, the pivot pivot 18, which remains in the rebate so that it can move in the longitudinal direction of the latter, moves in the direction of the open position of the leaf X (shown at the very top of FIG. 14) . This movement produces a slot in the lower corner of the leaf in the area of the pivot pivot housing, so that the ventilation efficiency increases. Because the movement of the tilt pivot 18 (Figure 2) is synchronous with the movement of the bolt 38 under the effect of the control of the connecting rod mechanism, the projection movement caused by the tilt pivot 18 in its housing 17 can also be synchronized with the projection movement of the upper edge of the leaf

  by the crossed arms joint 22.

  Figures 10 to 13 show other advantageous features of the present invention. A pivoting engagement element 45 is arranged on the cover plate 25 which encloses the connecting rod 31. The engagement element 45 is located substantially in the region of the articulated connection between the additional arm 24 and the arm of

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  projection 23. The latching element 45 comprises a bearing face 46 (FIG. 13). A downward-facing control pin 47 is arranged on the additional arm 24 of the cross-arm joint 22, near the articulation bolt 29. In FIG. 12, this control pin 47 is opposite the plane illustrated in section and is therefore represented by broken lines. As illustrated in FIG. 11, the control journal 47 bears, in the closed position of the cross-arm joint 22, against the bearing face 46 of the engagement element 45 so that the orientation of the latching element 45 is substantially straight relative to the longitudinal orientation of the upper rebate of the leaf. The latching element 45 comprises a tongue 48 oriented downwards and passing through the cover plate 25 and the connecting rod 31. This tongue 48 is, in the closed position of the cross-arm joint 22 (FIG. 11), substantially in the center of a recess 49

oblong formed in the connecting rod 31.

  The latching element 45 fixed on the cover plate 25 so as to be able to carry out a pivoting movement is put under prestressing by a spiral spring 50 fixed on the one hand to the latching element 45 and on the other hand on the cover plate 25 by means of the fixing bolt 51 of the latching element 45 so as to be held in the positions illustrated in FIGS. 10 and 13. In these positions, the tongue 48 of the element d snap 45 is pushed unilaterally against the edge of the oblong recess 49 of the connecting rod 31 so as to slide behind a snap nose 52 formed by a groove 53

  formed in the oblong recess 49 of the connecting rod 31.

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  This engagement is illustrated in FIG. 13. It makes it possible to block the connecting rod 31 when the fitting is in the tilting position and to prevent any movement of the connecting rod and, consequently, any rotation of the handle when the window is in

tilted position.

  It is only after closing the leaf and returning the cross-arm joint 22 in the position illustrated in FIG. 11 that the control pin 47 rests against the bearing face 46 of the engagement element 45 so that the tongue 48 of the latter comes out of the groove 53 to move to the center of the oblong recess 49 of the connecting rod. In this position, the connecting rod 31 can move freely in the longitudinal direction and the handle 4 can be freely rotated from the tilting position to the pivoting position of the leaf, the groove 53 of the connecting rod 31 being moved from the position of engagement illustrated in FIG. 13 towards the position illustrated in FIG. 12. The fact that the rotation of the handle 4 and the movement of the connecting elements of the connecting rod are released only when the joint with crossed arms is closed ( as illustrated in FIG. 11), guarantees that the rotary movement of the handle causes the alignment of the locking bolts 32 and 33 at the funnel-shaped ends 36, 37 of their housings 34 and respective ones. In addition, the bolt 38 is located in the region of the mouth of the guide slot 39, which guarantees that the consecutive movement of the connecting rod by the rotary movement of the handle 4 causes the upper edge of the leaf to be withdrawn by the introduction of the bolt 38 into the guide slot 39, on the one hand, and by the introduction of the bolts

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  locking 32, 33 in the funnel-shaped ends 36, 37 of their housings 34, 35, on the other hand. Then, the fitting of the cross-arm joint is securely locked in the leaf rebate.

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  List of benchmarks: 1 Window sash 2 Window sash 3 Right sash profile 4 Window handle Left sash profile 6 Upper hinge joint 7 Lower corner housing (tilt and turn housing) 8 Left frame profile 9 Vertical pivot axis Horizontal tilt axis 1l Edge mechanism 12 Cover plate 13 Closing pin 14 Closing pin housing, 15 'Closing element 16, 16' Closing pin housing 17, 17 'Tipping pivot housing 18 Tipping pivot 19 Connecting rod angle 21 Connecting angle 22, 22 'Cross arm joint 23, 23' Projection arm 24, 24 'Additional arm Cover plate 26 Angle transmission 27 Connecting rod 28 Junction pin 29 Bolt articulation Articulation bolt 31 Connecting rod 32 Locking bolt 33 Locking bolt

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  34 Bolt housing Bolt housing 36 Funnel-shaped end 37 Funnel-shaped end 38 Bolt 39 Guide slot Extension arm 41 Bias section 42 Straight section 43 Upper section 44 Lower section Interlocking element 46 Face d '' support 47 Control pin 48 Tab 49 Oblong recess Spiral spring 51 Fixing bolt 52 Interlocking nose 53 Groove

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Claims (10)

  1. Door leaf projection system for windows or doors with oscillating leaves (l) comprising a projection arm (23), the first end of which can pivot around the pivot axis of the leaf, while its other end is fixed to the leaf (1) so as to be able to pivot and move at the same time, an additional arm (24) fixed so as to pivot on the one hand around a pivot between the two ends of the projection arm (23) and on the other hand around a pivot on the leaf (1), as well as an arrangement comprising a guide slot (39) and a bolt (38) fixed on the leaf (1), this bolt being able to move in the slot guide (39) under the effect of a control mechanism, this arrangement being used to move the leaf (1) away from or closer to the frame by forced control, characterized in that the guide slot (39) is open at one end and that the bolt (38) is immobilized in the guide slot (39) of the van tail (1) in a tilting position which is close to the closed position and the tilting of the leaf (1) is released after the bolt comes out of the open end of the slot guide (39).   2. A projection device according to claim 1, characterized in that the additional arm (24) comprises an extension arm (40) projecting from the articulation bolt (29) on the projection arm (23), a guide slot (39) being formed in this additional arm.   3. projection device according to claim 2, characterized in that the slot - 25 -   guide (39), seen from the open end of the slot, comprises a first section (41) oriented obliquely to the longitudinal axis of the extension arm (40) followed by a second section (42) oriented parallel to the longitudinal axis of the arm of extension (40).   4. Projection device according to one of   previous claims, characterized in that the   bolt (38) is fixed to a connecting rod (31) and that it passes through an oblong hole made in the sheet metal   covering (25) which encloses the connecting rod (31).   5. A projection device according to claim 4, characterized in that the connecting rod (31) is coupled, by a bevel gear, to a second connecting rod on which a tilting pivot (18) is fixed in the region of the lower angle of the leaf relative to the pivot axis (9) of the leaf (1), the tilting pivot (18) cooperating with the housing (13) of the tilting pivot so that the angle of the leaf leaves the plane of the frame to move in the opening direction when the upper edge of the leaf is released from the frame by the movement of the   bolt (38) in the guide slot (39).   6. A projection device according to claim 5, characterized in that the two connecting rods are controlled by a handle (4) acting on a song mechanism (11), when this handle is turned from a closed position fixing the leaf ( 1) against the frame in a tilting position making it possible to tilt the leaf (1) passing through a pivoting position making it possible to pivot the leaf (1), an intermediate position of - 26 -   the handle (4) being provided before the tilting position in which the upper edge of the leaf emerges from the frame to create a slot of small width and o the pivoting pivot (18), while remaining in its housing (17) is maintained in a position offset from the plane of the chassis. 7. A projection device according to claim 6, characterized in that the handle (4) can rotate about an axis of rotation perpendicular to the plane of the leaf so that the handle (4) is oriented vertically downward relative to the pivot axis in the closed position or that it is oriented horizontally to the side relative to the pivot axis in the pivot position of the leaf or that it is oriented vertically upward relative to the axis of pivoting in the leaf tilting position and in this the handle (4) comprises an intermediate position o it is oriented at an angle of about 45 upward relative to   the horizontal and the pivot axis.   8. Projection device according to one   any of claims 4 to 7, characterized in   that a latching element (45) is arranged on a cover plate (25) of the connecting rod fitting mounted in the upper leaf rebate, this latching element being able to be moved against the force of an element of return and engage, in the tilting position of the connecting rod fitting when the leaf (1) is in the tilting position, with a locking nose (52) on the connecting rod (31) and blocks any movement of - 27 -   the connecting rod (31) towards the pivoting position and in that this latching member is pressed into an unlocking position by an arm of the cross-arm joint (22) when the leaf (1) is closed so that '' it does not break into   the engagement element (52) of the connecting rod (31).   9. A projection device according to claim 8, characterized in that a control pin (47) is disposed on an arm (24) of the cross-arm joint (22), this pin pressing against a face d '' support (46) of the latching element (45) when closing   the cross-arm joint (22).   10. A projection device according to claim 8 or 9, characterized in that the latching element (45) is fixed on the cover sheet (25) so as to be able to perform a pivoting movement and in that the force of return is produced by a spiral spring (50) one end of which is connected to the cover plate   (25) and the other to the latching element (45).