EP1223287B1 - Easy to mount checking assembly with additional functions - Google Patents

Abstract

The motor-powered articulated mechanism, to open/close a fanlight window or flap, has a longitudinal housing (1) to accommodate a drive and the articulated mechanism. A grip (40,40a) which is opened for release of its hold in or around a pin (Z), installed in the gap (12) between the window pane and the frame, acts on an opening/closing rod (49) for the window. The grip assembly is near the housing, and projects from it. The operation is through a wall nut on a spindle. A coupling is between the nut and a push member, to allow rotation (R) of the nut against the push member. The push member has an arm (40) to operate the rod at the window for the opening or closing movement.

Description

The invention relates to a motor scissor assembly. Such scissor assemblies have a Ausstellschere for the operation of wings, especially skylight wings that need to be operated at not easily accessible places, so must be opened and closed.

Motor-operated scissors are not unknown as such, eg described in DE-B 197 28 713 (W. Hautau ), and the mentioned therein EP-A 710 759 (W. Hautau ) . Two arms are hinged together, wherein in the housing of the one arm, an electric motor drive is placed, which allows the opening movement and the closing movement of the two scissor arms. In order to allow a tilting movement or compensation tilting movement of the scissor arms against each other, that is perpendicular to the plane of the scissor arms, multi-membered scissors are used, which have sufficient play in the joints or are pivotable about an axis of actuation. Such multi-link scissors usually have three pivot points, one of the main scissor arm, one of a control arm and a Ausstellgliedes, wherein one of the points is displaced by a control rod in the longitudinal direction and adjust the other joints and the scissor arms in accordance with this movement.

The DE-A 196 13 152 (Beikirch ) shows a ventilation window, which is driven by a motor and a spindle rod. A traveling nut moves on a spindle rod and releases via a driver (there 30) a rod coupled thereto (there 32) and this a claw-shaped pawl (there 31), which engages in the closed position on a pin of the wing, see , there Figures 3b, 3a. The shears of the local fitting are indirectly actuated by the Ausstellbewegung the wing, but not directly. On the other hand, the traveling nut directly actuates the driver, which slightly drops before opening the window, via the articulated rod, there 32, the latch raises and releases the wing to the opening, see. there the figure sequence 3a, 3b and 3c. The arranged on the driver (almost vertical) arm as a rod, there column 3, lines 6 to 44, in particular lines 24 to 30, is designed to actuate the latch, which in turn releases the pin (there 34) on the wing, but the Arm (link rod) is not designed to operate a wing locking or unlocking locking linkage on the wing; the latter is only indirectly functionally considered the consequence with the interposition of the pivotally mounted latch (there 31).

US-A 5,226,256 such as DE 199 38 253 (Winkhaus ) show a tilting device for a turn-tilt wing, wherein a single electric motor drive alternately actuates a tilting device and a locking device. For this purpose, two nuts are provided on the threaded spindle, cf. there column 5, lines 45 to 55. The US-A 5,535,551 shows a cross-shaped extension arm for an electrically operated Ausstellinrichtung for a wing. Two separate spindle rods, there 21, 22, are provided with opposing threads in order to achieve the raising movement of the X-arms, see. there FIG. 2 to FIG. 1 ,

It is an object of the invention to provide a compact arrangement of a motor-operated scissor assembly, which is easy to install. It should also have a low profile, be cost effective and have the ability to achieve additional locking or even locking of the wing via a linkage provided on the actuated wing without an actuating handle on the wing of this locking linkage linkage used in the longitudinal direction shifts.

This is achieved with claim 1. Its wording is included here.

The scissor assembly in this case has a locking arrangement (as engagement arrangement) so that it is arranged in the course of the housing length, exiting the housing and is shaped so that it can engage in the rebate (feature (a)). The scissor assembly, which is held and stored in the housing is laterally, in particular above the wing at a distance from the rebate arranged that the locking arrangement is able to engage in the rebate between the frame and sash with her arm and thereby detect a control pin in their longitudinal movement and can operate in the longitudinal direction. When opening the wing, the pin is first actuated by the arrangement by the motor actuation of the scissors in the initial Leerhubweg to then release the pin during the deployment movement of the wing. During the closing movement, this process is reversed. First, the pin is taken when closing and then in the course of Leerhubweges (the scissors) in the longitudinal direction of the locking (on the wing) moved.

The locking or additional locking is achieved via the actuating or locking linkage (also called locking linkage), where usually provided pins engage in closing pockets on the frame at a locking position.

A first locking can be achieved by the scissor assembly itself, which presses with its pulling force the wing to the frame. Usually, however, this initial locking is not sufficient in terms of the required closing force or the uniformity along the length of the operated wing, so that an additional locking on the locking linkage and distributed along the wing length arranged locking pin helps.

If corner baffles are used, the locking linkage can also extend around the corner of the wing, so that closure pins can also be provided in the vertical rebate chambers, actuated by the scissors arrangement via the described engagement arrangement, starting from the housing bottom, feature (b), via the locking linkage become.

The engine and the Anlenkböcke the articulation points of at least one Ausstellschere and a spindle rod are arranged in a common housing. In the course of the spindle rod, the housing is continuous, so requires no coupling pieces and is therefore easy to assemble. The mounting on the frame is done by fixing the housing with the motor and the scissors at the same time, with a few simple steps and a few screws the exact placement and good alignment of the housing held in the shears is possible.

Due to the combination of a longitudinal stroke movement for the pin of the actuating linkage and a deployment movement of the scissor arm, which allows a slight tilting or tilting movement to allow the lowering of the wing when opening, a compensating device is provided which allows a rotational movement of the traveling nut driving the scissors, without the described additional locking in their position perpendicular to the frame to change. The operation of the scissors assembly is carried out via the traveling nut, wherein the same traveling nut is coupled via a (circumferentially) loose coupling with the latching arrangement engaging from the housing (claim 1).

The coupling takes place via a sliding member, which is guided at the bottom of the housing.

The sliding member may be configured roof-shaped (claim 8), wherein it engages in a chord-shaped recess of the traveling nut.

A relative pivoting of the traveling nut around its axis, in which the spindle rod is arranged, thus brings the chord-shaped Recess with its flat bottom (claim 9) in relative positions to the roof-shaped formation. The wedge-shaped surfaces are either left or right in the end position near the flat bottom and can by their wedge slopes (which are flat) define the maximum Auslenkhub (the rotational position limit angle) of the traveling nut.

The engagement arrangement on the slider member, as a locking arrangement, may have an angular shape in order to improve the engagement in the rebate space between the flap of the wing and the frame on which the scissor assembly is fixed (claim 7).

There may be two or more shears arranged in a common housing. A central drive is provided (single-window solution). Here, a long spindle rod is the coupling element of the scissors. Can also be coupled via a tubular intermediate piece, which connects without rotation one driven via the spindle nut with the next nut, which operates the next pair of scissors. The intermediate tube does not rotate with the longitudinal movement, but couples the pushing movement to the next - and also further - scissors (s).

Likewise, two or more (spaced) individual shears may be sequentially coupled to a pipe (a profile), the drive being located only in a pair of shears (multi-window solution). Here, the tube can connect the traveling nuts of several scissors as a thrust piece and be inserted axially into the walking members.

To couple the tube as a profile to the respective traveling nut, (axial) recesses may be provided there, in which the tube is inserted or inserted with its end piece.

Figur 1

veranschaulicht eine geschlossene Scherenanordnung mit einem Motor 2, einer Spindelstange 3 sowie einem Ausstellarm 7, teilweise im Schnitt.

Figur 2

veranschaulicht die geöffnete Stellung der Scherenanordnung in spiegelbildlicher Darstellung.

Figur 3

veranschaulicht einen Schnitt senkrecht zur Ebene des Blendrahmens, wobei die Scherenanordnung am Blendrahmen angeordnet ist.

Figur 4

veranschaulicht den Eingriff eines Verriegelungsarms 40 einer Zusatzverriegelung in den Zapfen Z des Betätigungs- oder Verriegelungsgestänges (auch Verschlussgestänge genannt).

Figur 5

veranschaulicht einen Ausschnitt der Verriegelungsanordnung mit dem Arm 40 in Aufsicht mit der Wandermutter 4.

Figur 6

ist ein Schnitt entlang der Linie A-A von Figur 4, zur Veranschaulichung des Eingriffes eines dachförmigen Schiebeglieds 41, an dem der Verriegelungsarm 40 angeordnet ist, in die sehnenförmige Ausnehmung 4a der Wandermutter 4.

Figur 6a

ist eine perspektivische Ansicht der Funktionseinheit aus Verriegelungsanordnung, Schiebeglied und Wandermutter 4, ohne die Spindelstange.

Figur 7

sind Darstellungen der Funktion von Schiebeglied 41 sowie des Durchgriffs durch den Boden des Gehäuses 1.

Figur 7a

ist eine Aufsicht auf das Profil, teilweise geschnitten, zur Verdeutlichung der Führung eines ersten Abschnittes 40b des Armes 40 in einem in der Dicke reduzierten Abschnitt 1a, 1c des Gehäuses an der zum Blendrahmen weisenden Seite.

Figur 7b

ist eine Ansicht der Wandermutter 4 im Gehäuse 1.

Execution examples explain and supplement the invention.

FIG. 1

illustrates a closed scissor assembly with a motor 2, a spindle rod 3 and a stay 7, partially in section.

FIG. 2

illustrates the open position of the scissor assembly in a mirror image.

FIG. 3

illustrates a section perpendicular to the plane of the window frame, wherein the scissor assembly is arranged on the frame.

FIG. 4

illustrates the engagement of a locking arm 40 of an additional lock in the pin Z of the actuating or locking linkage (also called shutter linkage).

FIG. 5

illustrates a section of the locking arrangement with the arm 40 in plan view with the traveling nut 4th

FIG. 6

is a section along the line AA of FIG. 4 to illustrate the engagement of a roof-shaped sliding member 41, on which the locking arm 40 is arranged, in the chord-shaped recess 4a of the traveling nut 4th

FIG. 6a

is a perspective view of the functional unit of locking assembly, sliding member and traveling nut 4, without the spindle rod.

FIG. 7

are representations of the function of sliding member 41 and the passage through the bottom of the housing. 1

Figure 7a

is a plan view of the profile, partially cut, to illustrate the guidance of a first portion 40b of the arm 40 in a reduced-thickness portion 1a, 1c of the housing on the side facing the frame.

FIG. 7b

is a view of the traveling nut 4 in the housing. 1

In the FIGS. 1 and 2 is in the open and closed state a multi-unit scissors visible. A substantially rectangular housing 1 receives a drive unit 2, which rotatably actuates a spindle rod 3. The Spindle rod 3 extends to the scissor members, or the section in which the scissor assembly is placed. Between the scissor portion and the motor portion, the housing 1 is designed continuously. At both end portions is ever a mounting point 71, 70th

The spindle rod 3 engages with its spindle (its thread) in the thread of a traveling nut 4, which is arranged longitudinally displaceable in the housing 1. It has the ability to rotate through a certain angle to allow a compensating movement of the scissor arms of the multi-section scissors when lowering the wing (during its opening movement).

The traveling nut on the spindle moves via a connecting piece 31a a point of articulation 31, on which a Ausstellglied 5 is pivotally mounted, via a slot / pin connection (or more such compounds) actuates a control link 6, wherein provided in the web guide Leerhubweg 61 is. The control link is hinged to a fixed, immovable articulation point 32 on a support frame 9 and engages with its other end to the exhibitable scissor arm 7, which is pivotally coupled to another link 8 as another support bracket via another joint 30, wherein the joint piece , the traveling nut 4 and the coupling piece 9 are placed along an axis 20 extending in the spindle rod 3. The pivot piece 8 can be moved in the longitudinal direction, so it is not coupled to the thread of the spindle rod. The traveling nut 4 is only movable when the spindle rod rotates, so is with its thread in rotary engagement. The pivot point 32 on the support frame 9 is immovable.

When the traveling nut moves (as a "walking member"), the two inner links 5 and 6 move and move the second arm 7, guided by the scissor element 8, to the left to the closed position (cf. FIG. 2 ). The dashed line 7a shows the arm 7 can be displayed in the closed position.

The extension arm has a wing coupling point 10, which is designated in the closed position as 10a and which extends in the direction H perpendicular to the extension of the housing 1 from the frame B, to open the wing F. The attachment of the wing coupling point 10 via a sash bracket 50 on the wing F, as in FIG. 3 shown.

During the closing movement or the opening movement, the scissor arm 7 can move in a released direction R and back, pivoting about the axis 20. A slot 25 is provided on the housing 1 to the handlebars 5, 6 and the associated articulation points 31, 32, 30 to get a penetration. All three hinge points 30, 31, 32 can pivot about the axis 20 limited. Only the hinge point 32 maintains its longitudinally fixed position in an opening movement and a closing movement. The articulation points 30 and 31 are along the axis 20 at a rotation of the spindle rod 3 and a drive by the motor 2 longitudinally displaceable.

The closed state with the same reference numerals is in FIG. 1 shown. The motor is arranged on the left here, extends over a coupling region to the spindle rod 3, which actuates the traveling nut 4.

In supervision, an additional lock can be seen as an angle piece 40, which is coupled to the traveling nut in a manner to be described in more detail. The reference numerals of FIG. 1 match the ones above FIG. 2 described so that they will not be discussed here again. It should be noted too FIG. 1 but that the handlebar 5 is not shown in the sectional view, only one articulation point 31 on the traveling nut 4 can be seen.

A coupling 40, which is screwed to the traveling nut 4 and has a slot 40a which opens to the side, allows actuation of the locking or additional locking. It takes place via the coupling point 40, Z, wherein Z is the pin of a locking linkage 49, as in FIG. 4 shown.

During the idle stroke 61 of the scissors, a releasable coupling is achieved by engaging the lateral opening of the elbow 40 about the pin Z, which allows a longitudinal actuation when the wing is closed. When opening the pin Z is initially moved against the closing direction to the opening direction, with other locking pin on the linkage 49 solve the lock and the wing is issued at the beginning of the opening of the scissor arm 7.

In the end positions, the system has a mechanical stop internally and the motor is switched off via a load switch-off.

Screw fasteners 70, 71 are in Figures 2 and 3 and 1 can be seen. They are designed so that an additional alignment with the wing is possible, for which slots are provided in two directions.

Due to the compact design and the related construction of motor and scissors, the assembly time is significantly reduced. The components motor, scissors, shears holder, linkage and coupling need not be mounted and positioned separately in a particular sequence, but can be given by a single positioning of all the components the correct relative position and also the orientation to the wing and the sash 50 are respected ,

The engagement of the angular Eingreifarms 40 is for locking in the closed position in FIG. 3 shown. He engages in the closed position in the rebate 12 a. The position before engaging in the pin Z, or the encompassing of the pin Z is in FIG. 4 illustrated. At a decreasing distance H, the angular Eingreifarm 40 so moves with the traveling nut 4 that he - properly aligned - when hitting the wing F on the frame B (at H = zero) the pin Z (at least a piece) surrounds and then during the Leerhubweges 61 (corresponding to the parallel to the axis 20 recess in one of the handlebars) a longitudinal movement x of the drive rod 49 triggers, which is arranged under a cover rail 49a.

In a strong magnification is in FIGS. 5 and 6 and Figure 6a illustrates the coupling of the angled arm to the pin Z. The traveling nut 4 can be seen with the hinge point 31 on a molding 31a. Similarly, the axis 20. Between the traveling nut 4 and the protruding at the bottom of the housing 1 angle arm 40 is a loose coupling, which in section in FIG. 6 is recognizable. A roof-shaped intermediate piece as sliding member 41 is fixedly connected (via a screw connection) to the angle-shaped arm 40. The roof-shaped member has a shallow angle between 140 ° and 160 ° and engages in a chord-shaped recess 4a. The traveling nut 4 can thus perform a limited pivoting about the axis 20 without the angle arm 40 has to take this pivoting movement with, or pivots through it. In the longitudinal direction, the coupling takes place via the axial edges of the recess 4a (above and below the paper plane of FIG. 6 ), for transmitting a pushing movement to the angle arm 40 with its recess 40a for engagement in the pin Z on the drive rod 49. This tight coupling shows FIG. 5 in supervision.

The passage of the angle arm 40 through the bottom of the housing 1 is in FIG. 7 explained. The bottom of the housing 1 is recessed approximately in the center, wherein a slot 1c is formed, through which the connection point between the angle arm 40 and slide member 41 extends. The sliding member 41 is guided in the housing, wherein the remaining pieces of the floor 1b take over the guide to the frame.

A cutout 1a at the lower bottom of the housing 1 provides for a possible penetration of the portion 40b of the angle arm between the housing and the frame, on this and beyond the maximum sliding path of the angle arm 40, a greater floor thickness of the housing is provided to the space for the strength of the angle arm 40 in its section 40b to get its longitudinal movement. The section 40b so protrudes laterally.

A clearance through the cutout, perpendicular to the extension of the bottom 1b and the surface of the window frame, is small, so that too large pivoting of the angle arm 40 relative to the frame or the rest of the bottom 1b is not allowed, due to the free (loose) coupling and the roof-shaped forming of the sliding piece 41 to the traveling nut 4 is achieved.

The traveling nut 4 is provided at the other end with the handlebar Anlenkfortsatz 31 a, which determines the articulation point 31. All other reference numerals of FIGS. 7 are also recognizable from the other figures, so that they should not be discussed in detail.

In the area of the link armature extension 31a (symmetrically arranged) a circumferentially limited elevation 4b is provided, which is formed on the traveling nut. This has on both sides stepped heels with the following purpose to limit the circumferential pivotal movement of the traveling nut.

Usually, a traveling nut is not circumferentially pivotally guided or stored in order to move only in the longitudinal direction with a spindle rod and a rotational movement (motor, spindle rod, drive) in a longitudinal movement (Ausstellbewegung, scissors operation or joint displacement) implement. The lowering movement of the wing F described above during a deployment movement H, represented by the vector representation R in FIG. 3 , allows the traveling nut 4 to rotate slightly circumferentially, the projection 31a projecting through the gap 25 and allowing an angular pivoting movement of a few degrees (up to 10 ... 20 degrees). The provided on both sides paragraphs 4b 'and 4b "allow a support of the traveling nut on the inner contour or the inner surface of the housing in order to limit or limit the forces on the spindle rod.

The slot 25 leads on one side to the loss of the guide for the traveling nut in the profiled housing. If the extension 31a were loaded in the previously described direction, the spindle 3 would be loaded radially. To avoid this load, or the load is kept within limits, stepped heels are provided at an angular distance of between 40 ° to 50 ° from the plane in which the extension 31 is located. It would satisfy one of these paragraphs, but both paragraphs may be provided for a symmetric solution. With these paragraphs, the walking nut is supported by a circumferential movement on the inside of the profile.

From the sectional view of FIGS. 7 (right part of picture) is the in FIG. 3 previously described gap 25 clearly visible, through which the extension 31a of the traveling member 4 engages as well as the other Anlenkböcke 8 and 9, as described above, wherein the Anlenkbock 4 is designed as a traveling nut, guided on the spindle 3.

The opposing gap 1c for penetrating the joint between the engagement piece serving as elbow 40 and the slide member 41, which connection is rigid, is in Figure 7a more clearly visible. FIG. 7b illustrates the procedure 41 / 4a from a different angle.

A coupling piece as a profile tube can be plugged onto the traveling nut 4, as in FIG. 6 by axially free-standing openings 4f, which extend part of the circumference shown. This sliding piece is used to transmit a pushing movement of the walking member 4 to other moving members, which are then not operated with a spindle, but on the coupling piece.

This coupling tube may extend in the longer extending housing to actuate multiple scissors. This coupling tube as a profile can also extend over an existing gap between adjacently arranged scissors to impart also outside of the scissors housing an (axial) drive stroke, the rotational movement a spindle is caused only a wandering member in a scissors housing.

The coupling K, which in FIG. 5 is schematically outlined for use in the end face of the walking member 4, by a clamping device, represented by a screw guided in the thread 50 with a front tapered spine lug 50 a, held. In order not only to clamp the described coupling tube, but also to hold it firmly, the small spike projection 50a can penetrate under pressure into the tube material of the coupling piece so as to be able to transmit axial forces (positive fit). Other clamping devices are also possible. The described screwing with materialverdrängendem mandrel approach is not the only way.

To guide the traveling nut 4 in the housing profile, the lateral guide sections 4c, 4d are mentioned, which are arranged opposite each other. They are adapted to the shape of the traveling nut, allow their longitudinal movement and also their pivotal movement, which has been described above, limited by the shoulders 4 ', 4 "of the upper lug 4b in the vicinity of the extension 31a The pivoting movement can be increased if the sliding element 41 has a roof-shaped configuration hardly, if not no play exists.The longitudinal movement of the traveling nut 4 can thus be improved in their accuracy.

The section 40b of the angular engagement arrangement 40, with arm 40b and recess 40a extending perpendicular thereto in the angular arm section, is guided in a recess 1a of the housing, which can be a partial removal of a wall of the housing profile 1. In addition, a gap is also provided here, the 1c with the passage of a screw allows to fix the sliding sliding member 41 of the arm. The remaining wall on this side and beyond serves as a sliding bearing for the arm portion 40b and the sliding member 41. Within the housing, the traveling nut 4 is included and guided with bearings 4c, 4d.

Claims (17)

1. Motor-powered scissor-linkage arrangement for actuation of a casement (F), having an elongated housing (1) with a longitudinal drive (2, 3, 4) accommodated therein, to which an electric motor (2), a spindle rod (3) and a sliding nut (4) guided on the spindle rod (3) belong, and having a scissor-linkage arrangement (5, 6, 7) which can be actuated by the longitudinal drive (2, 3, 4) and comprising several scissor-linkage members; wherein

   (a) actuation of the scissor-linkage arrangement (5, 6, 7) is effected via the sliding nut (4), and wherein a slide member (41) coupled to the sliding nut (4) is provided which is provided with an arm (40; 40a, 40b) which is formed on the casement to actuate a closure linkage which locks or unlocks the casement (F);
   characterised in that

   (b) the slide member (41) is guided in the housing (1) essentially non-pivotably on the base (1a, 1b) of the housing;

   (c) the coupling between the longitudinal drive (2, 3, 4) and the slide member (41) driven thereby is a peripherally loose or movable coupling (41, 4a), having substantially no clearance in axial direction (20).
2. Scissor-linkage arrangement according to claim 1, having the housing (1), the electric motor (2), the at least one opening scissor linkage as scissor-linkage arrangement and the spindle rod between motor region and scissor-linkage region, to open the scissor linkage or its scissor-linkage members (5, 6, 7), wherein the housing (1) runs essentially continuously between the motor region and the scissor-linkage region in the course of the spindle rod (3).
3. Scissor-linkage arrangement according to claim 1, to actuate skylight casements or shutters as casements (1),

   - having an engagement arrangement (40; 40a, 40b) as an arm for engagement which releases during opening in a or around a pin (Z) - in the assembled state - placed in a rebate (12) between casement and a blind frame, on a locking or closure linkage (49) for the casement (1) which locks or unlocks the casement, wherein the engagement arrangement is arranged in the region of the housing and projects from the latter.
4. Scissor-linkage arrangement according to claim 2, wherein assembly points (70, 71) for attachment to the blind frame are arranged on the end sections of the housing outside of the motor region and outside of the scissor-linkage region.
5. Scissor-linkage arrangement according to one of the previous claims, wherein

   - the scissor-linkage is suitable for opening casements, in particular skylights; and/or

   - has at least three members, with a long scissor-linkage arm (7), a control guide and an opening member (5), which are arranged to be articulated on supports (4, 8, 9), wherein the opening member has a hinge point (31), which can be longitudinally displaced by the spindle rod synchronously with its rotation.
6. Scissor-linkage arrangement according to claim 1, wherein the casement is a skylight casement.
7. Scissor-linkage arrangement according to claim 1, wherein the scissor-linkage member (41) is coupled fixedly or non-rotatably to an angular section (40; 40b, 40a) as an arm for engagement in a rebate.
8. Scissor-linkage arrangement according to one of the previous claims, wherein the slide member (41) is designed like a roof.
9. Scissor-linkage arrangement according to claim 1 or 8, wherein the slide member, in particular with a roof-like section, projects into a recess (4a) of the sliding nut, and the base of the recess runs level.
10. Scissor-linkage arrangement according to claim 7, wherein the angular section is provided with an in particular angular recess (40a).
11. Scissor-linkage arrangement according to one of the previous claims, wherein the opening scissor linkage or its scissor-linkage members or arms (5, 6, 7) with an opening movement of the casement actuated by it, execute a rotary or inclined movement (R) following the lowering of the casement, in particular about an axis (20) of the spindle rod (3).
12. Scissor-linkage arrangement according to claim 11, wherein at least three hinge points (30, 31, 32) of the scissor-linkage arms or members (5, 6, 7) can be pivoted about the axis (20), or pivot during opening of the scissor linkage of the scissor-linkage arrangement assembled on the blind frame.
13. Scissor-linkage arrangement according to claim 9, wherein the roof-like section projects into a tendon-like recess (4a) of the sliding nut.
14. Scissor-linkage arrangement according to one of the preceding claims, wherein supports are placed essentially in the housing (1) and at least one of them can be moved longitudinally along the housing axis (20), which movable support is designed as a sliding nut (4) on a spindle rod (3), which sliding nut supports the hinge point (31) of the opening member (5), in particular on an extension (31a) projecting from the housing.
15. Scissor-linkage arrangement according to one of the preceding claims, wherein the sliding nut (4; 4a, 4b) has a projection (4b) close to an extension (31a) to couple a scissor-linkage arm (5), which projection comes to rest on inner surfaces of the housing during a peripheral rotation of the sliding nut about the axis (20) of the spindle rod.
16. Scissor-linkage arrangement according to one of the preceding claims 14 or 15, wherein the projection has peripherally spaced steps (4b', 4b") to limit the rotary movement about the axis.
17. Scissor-linkage arrangement according to one of the preceding claims, wherein the sliding nut is mounted (4c, 4d) several times in the housing profile guided in longitudinal direction, but the bearing points permit (R) a pivoting movement of the sliding nut.

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