EP3045634B1 - Checking device for a window or a door comprising an energy storage device - Google Patents

Description

The invention relates to a display device for a window or a door with an energy storage device according to the preamble of claim 1. The invention further relates to a window or a door with such a display device and a method for mounting the display device to a window or a door.

Ausstellvorrichtungen of this type are known per se, so from the WO 2013/135545 A or the US 2 6988 173 A , The energy storage - which preferably has one or more springs for energy storage - serves to facilitate the opening and closing by an energy storage and energy release, in particular such that the movement of the wing is damped when closing, so that too hard and possibly loud striking the frame is prevented. In addition, the energy storage are used to release the energy stored in them when opening again to facilitate the opening of the wing from the closed position. The handling of the known Ausstellvorrichtungen with energy storage has not proved sufficiently pleasant.

It is therefore a Ausstellvorrichtung be created with energy storage, which is characterized by a more harmonious and perceived as more pleasant for the user opening and closing movement of the wing.

The solution to this problem is the object of the invention.

The invention solves this problem by the subject matter of claim 1.

According to claim 1, the following object is provided: an opening device for a window or a door with a frame and a relatively movable wing with a sash having at least the following features: one or more articulated to the wing and the frame at least at one point A. connectable handlebars, an energy accumulator having one or more springs, and a pull and push rod attached directly to a point B on the handlebar of the deploying device, one or more of the springs being provided for movement of the handlebar the Ausstellvorrichtung on To assist the point A at least in a first direction of movement X by a force on the push rod and / or the movement of the handlebar of the display device at point A by a force on the push and pull rod in at least one second opposite the first direction of movement X. To dampen movement direction -X. The Ausstellvorrichtung is designed as a Ausstellschere, with a main link and an auxiliary link, wherein the handlebar, which acts on the pull and push rod, the main link, and wherein the pull and push rod is mounted at a location B to the main link, which is spaced from the location A, to which the main link is articulated to the wing, further wherein the energy storage device comprises at least one housing in which a carriage is displaceably guided, acts on the pull and push rod, wherein the housing of the energy storage a elongated shape and parallel to the main extension direction X of a sash frame spar is disposed thereon, and wherein an end face of the housing has an opening from which the push and pull rod protrudes longitudinally and pivotally, wherein the outwardly projecting from the housing end of the pull and Push rod is arranged on the main link of the display device and wherein the location B of the articulation of the pull and push rod so offset from the location A of the articulation of the main link on the casement is that the place B when opening and closing the wing describes an arc around the place A.

It is the pull and push rod at the location B attached to the handlebar, which is spaced from the location A, at which the handlebar is articulated to the wing and / or the frame (and there preferably also linearly displaceably guided). The thus formed Ausstellvorrichtung is easy to install and supported by this type of arrangement particularly effective and harmonious opening and closing movement of the wing. Preferably and advantageously, the opening device is thereby moved in the first direction of movement X in an open position and in the second direction of movement -X in a closed position.

It is structurally simple that the energy storage device has at least one housing in which a carriage is displaceably guided, on which the pull and push rod engages.

It is the Ausstellvorrichtung as a Ausstellschere - in particular a rotary and / or rotary / tilting scissors - formed, with at least one main link and an auxiliary link, wherein the handlebar on which the pull and push rod attacks, preferably the main link. Because such Ausstellscheren are particularly suitable for use of energy storage with spring.

Particularly preferably, the main link is pivotally mounted with its one end on the frame and with its other end hinged to the sash. It is also advantageous if it is guided at the end to which it is articulated on the casement, in addition to this displaceable, in particular parallel to the main extension direction X a corresponding spar of the casement.

According to a further advantageous variant, with which the opening and closing movement of the wing can be supported particularly advantageous, the pull and push rod is arranged relative to the housing of the energy storage linearly movable and limited pivoting.

• als Schraubenfedern oder als Elastomerfedern ausgebildet sind, und/oder
• die eine oder mehreren Federn als Druckfedern ausgebildet sind, und/oder
• die eine oder mehreren Federn eine lineare oder eine progressive Federkennlinie aufweisen.

According to preferred and structurally advantageous variants of the invention are the one or more springs

• are designed as coil springs or as elastomer springs, and / or
• the one or more springs are designed as compression springs, and / or
• the one or more springs have a linear or a progressive spring characteristic.

It is also advantageous if two or more of the springs are arranged parallel to each other.

In order to adapt the energy storage device optimally to the respective installation situation, it is advantageous according to a further variant if at least one adjusting device for adjusting the spring tension of the spring (s) of the energy store is present in a rest position.

• die Federspannung ist mit der Justiervorrichtung in Offenstellung des Fensters einstellbar, und/oder
• zur Einstellung der Federspannung ist die Position des Widerlagerschuhs oder der Widerlagerschuhe im Gehäuse mittels der Justiervorrichtung einstellbar, und/oder
• die Justiervorrichtung weist eine oder mehrere Stellschraube(n) aufweist, wobei die Stellschraube(n) vorzugsweise drehbar durch Formschluss im Gehäuse gehalten ist/sind.

Advantageous variants of this adjusting device, which allow a good adjustment of the spring tension, are configured as follows:

• the spring tension is adjustable with the adjusting device in the open position of the window, and / or
• to adjust the spring tension, the position of the abutment shoe or the abutment shoes in the housing by means of the adjusting device is adjustable, and / or
• the adjusting device has one or more adjusting screw (s), wherein the adjusting screw (s) is preferably rotatably held by positive engagement in the housing / are.

Preferably, the springs designed as helical springs are penetrated by rods

The invention also provides an advantageous window or door according to claim 11, preferably with at least one advantageous Ausstellvorrichtung according to any one of claims 1 to 10.

The invention also provides a method for mounting a window according to claim 12 and 13, wherein the energy storage is mounted in time after the display device at the window. This simplifies the installation of the energy storage and allows in particular a simple way of retrofitting the energy storage at the window.

Further advantageous embodiments can be found in the remaining claims and dependent claims.

Fig. 1

eine perspektivische Ansicht eines Abschnitts eines sich in einer Kippstellung befindlichen Fensters mit einer Ausstellvorrichtung mit einem Energiespeicher;

Fig. 2

in a) eine Ausstellvorrichtung nach Art jener der Fig. 1 mit einem Energiespeicher mit abgenommenen Gehäusedeckel und an der Ausstellvorrichtung angeordneten weiteren Beschlagteilen, dargestellt in einer Offenstellung, in b) in einer zu a) entsprechenden Ansicht, aber in einer erweiterten teilweisen Sprengansicht; und in c) die Ausstellvorrichtung aus a) und b) in einer Geschlossenstellung;

Fig. 3

in a) den Energiespeicher der Ausstellvorrichtung aus Fig. 1 und Fig. 2 ohne Gehäusedeckel, in b) den Energiespeicher aus a) mit dem Gehäusedeckel und in c) den Energiespeicher aus b) in einer Sprengansicht; und

Fig. 4

eine Sprengansicht eines weiteren Energiespeichers für eine Ausstellvorrichtung insbesondere nach Art der Fig. 1a).

The invention will be described in more detail below with reference to the drawing with reference to exemplary embodiments. It shows:

Fig. 1

a perspective view of a portion of a located in a tilted window with a display device with an energy storage device;

Fig. 2

in a) a display device in the manner of those of Fig. 1 with an energy store with removed housing cover and arranged on the display further fitting parts, shown in an open position, in b) in a view corresponding to a), but in an extended partial blasting view; and in c) the display device of a) and b) in a closed position;

Fig. 3

in a) the energy storage of the display device Fig. 1 and Fig. 2 without housing cover, in b) the energy store from a) with the housing cover and in c) the energy store from b) in a blasting view; and

Fig. 4

an explosive view of another energy storage device for a display device in particular according to the type Fig. 1a) ,

It should be noted at this point that the following explanations also apply analogously to doors, whereby in each case the term window is to be replaced by that of the door.

This in Fig. 1 shown window is designed as a tilting window, this term also includes the variant of the turn / tilt window. It has a preferably circumferentially closed frame 2 and a wing 1 with a circumferential closed sash 3, which encloses a Flächenelemerit not shown here, in particular an insulating glass pane. In the closed state of the wing 1 defines this one level, which is also referred to below as a window level.

The casement 3 and the frame 2 are each preferably formed as a rectangular frame of horizontal profile struts 4 and 5 and vertical profile struts 6 and 7, which are interconnected in corner regions (eg in joint areas with corner connectors, not shown here). The other profile spars are in Fig. 1 not shown.

The wing 1 or the sash 3 is movable, in particular pivotally hinged, arranged on the frame 2. The opening direction in which the wing 1 is opened is denoted by Y.

In a tilting window to a swivel joint is provided that the wing 1 and the frame 2 in the lower (in Fig. 1 not shown area) hingedly interconnects. The invention is not limited thereto but can also be used in rotary windows with a vertical axis of rotation or in Parallelausstellfenstern or the like. Between the frame 2 and the wing 1, a circumferential rebate is formed.

To realize a defined movement of the wing 1 - in particular around the axis of rotation - in its open position and its closed position, a display device 8 is provided ( Fig. 1 . Fig. 2 ). The display device 8 can in turn be constructed in various ways.

To Fig. 1 the display device 8 is formed in the manner of a Ausstellschere with at least two links. It has for this purpose a main link 9 and preferably one (or more) articulated thereto supporting link 10 ( Fig. 2a . b ).

The main link 9 is pivotally attached at one end to the sash 3 (at location A) and hinged at its other end to the frame 2 (location C). At the end to which it is hinged to the casement 3, it is also guided on this displaceable, in particular parallel to the main extension direction X of a horizontally extending profile spar 4 of the casement 3. Realized this is simply characterized in that on the main link 9 at the end of the wing frame 3 facing a sliding pin or shoe 11 (see in particular Fig. 2c ; or a roller or the like.) Is arranged or formed, which projects from this in a slot-like setting 12 on the sash 3. The gate 12 may be formed directly in a spar or in a fitting part 13 that in or on a fitting groove 14 (FIG. Fig. 1 ) of the profile spar 4 of the sash 3, in particular is fixed.

It should be noted at this point that in Fig. 1 and 2 other fitting parts such as a locking pin 15 and a corner drive 16 are shown, but functionally not directly related to the movement of the display device 8 here. Rather, these fittings serve to lock and unlock the window - which is preferably manually operated by hand or electromechanically - in its closed position. The actual moving of the Wing 1 in its closed position and in its open position by hand, preferably by means of the already mentioned (not shown here) handle, or just motor. Not only in a manually operated window or door but also in a window or door with a motor drive, an opening and / or closing aid and / or a damping function when opening and / or closing the wing, as described below will be useful and useful.

The support arm 10 is hinged here in a preferred embodiment with its one end (and thereby immovable) on the sash 3 (here on a fitting 17 on the sash 3 and with its other end on the main link 9 between the two on the sash and frame 3, the first hinged ends.

As in Fig. 2 To recognize the articulation of the main link 9 can be done on the frame 3 by means of one or more other fitting parts 18 which are fixed to the frame 3, for example, in a fitting. In addition, further articulated arms 19, 20 may be formed in this area between the fitting part 18 and the main link 9 in order to optimize the movement and stability of the opening device 8.

The Ausstellvorrichtung 8 is advantageously designed so that it is in the closed position (preferably on the sash 3) completely in the rebate between the blend and sash 2, 3 is arranged and is not visible from the outside in this closed position.

The opening device 8 also has an energy store 21. This energy storage 21 has a housing 22 and a pull-out and push rod 23 which can be extended out of the housing (which by way of example (and advantageously simple) is formed from a flat bled strip).

Also, the entire energy storage 21 is advantageously designed such that it is arranged as a part or additional component of the opening in the closed position completely in the rebate between the blend and sash 2, 3 and iin this closed position is not visible from the outside.

It is advantageous if the entire energy storage is mounted in time after the raising device 8 at the window. Because this makes it possible to form the energy storage 21 as a retrofittable optional device and use.

The housing 22 of the energy store 21 engages here with a kind of mounting foot 24 webs 25 of the sash 3 on the fitting groove 14 of the wing frame 1. It is also simple and stable with screws 26, 27 (FIG. Fig. 1 . Fig. 3c ) screwed to the sash 1. This type of attachment is simple, stable and advantageous, but not mandatory. Alternatively, a latching attachment or such with rivets or the like. Imagine. Particularly preferably, the energy storage 21 is arranged on the blend or casement 1, 3, that it can be retrofitted.

The housing 22 has a preferably elongated shape. An end face 28 ( Fig. 3a ) of the housing 22 is aligned perpendicular to the main extension direction X of the sash profile rail 4. This end face has an opening 29 from which the pull and push rod 23 protrudes. The outwardly projecting from the housing 22 end of the pull and push rod 23 is disposed on the display device 8, in particular on one of the handlebars of the Ausstellvorrichtung 8. Preferably, the outwardly projecting end of the pull and push rod 23 to the main link 9 of the display device. 8 hinged. This articulation is carried out in particular in a simple manner with the aid of a pin and the push rod 23 and main link 9 passing through pin 30 (see in particular Fig. 2b ). This pin 30 may for example be a threaded pin or a screw.

In this case, the location B of the articulation of the pull and push rod 23 on the main link 9 is preferably offset to the location A of the articulation of the main link 9 on the sash 1. In particular, the location B of the articulation of the pull and push rod 23 on the main link 9 (considered in the closed Condition of the wing 1) between the location A of the articulation of the main link 9 on the sash 3 and the location C of the articulation of the main link 9 on the frame 2. When opening the wing 1 in the opening direction Y and sweeping back the wing 1 in its closed position the place B or the place B around the place A an arc or a curve with a constant radius here, in turn here the distance AB equivalent. As a result, the pull and push rod 23 changes its direction of action during opening and closing, which becomes more and more oblique (angle> 0 °) when opening to the main extension direction X. The point B is then in the direction -Y by the IBetrag Y '> 0 offset to the point A ( Fig. 2b ).

Particularly preferably, the location B of the articulation of the pull and push rod 23 is close to the location A of the articulation of the main link 9 on the casement 1, in particular by 2 to 100 mm offset to this place. Due to the fact that the two articulation locations or points A and B on the main link 9 are arranged separately from each other, they are advantageously relieved each time. The movement of the wing 1 is hereby also particularly well supported or damped. In addition, the assembly is simple and clear. The pin 30 can engage in the main link 9 in a cylindrical hole 31, 31 'respectively on the main link 9 and the pull and push rod 23, wherein it is rotatable in one of the two or both or in a slot or the like., Depending on the interpretation , Preferably, the pin 30 is provided with a head and mounted, so to speak, "from above", which makes the assembly easy and facilitates the retrofitting of the energy storage 21.

Hereinafter, the structure of the particularly preferred energy storage 21 will be described in more detail with reference to FIGS Figures 2 and 3 explained. One end of the pull and push rod 23 is arranged on the opening device 8, in particular on its main link 9. The other end of the pull and push rod 23, which lies in the interior of the housing 22, mounted in the housing 22 on a slidably guided in the housing 22 (in the main direction X parallel to the Flügelrahmenholm 4) carriage 32, in particular articulated. The arrangement is such that the carriage 32 in the main extension direction X and opposite to this direction (-X) in the housing 22 is displaceable. For this purpose, it has a geometry which corresponds to that of the interior of the housing 22.

First, consider the function of the carriage 32. Preferably, a pin 33 is formed on the carriage 32, which engages in a hole 34 of the pull and push rod 23. Acts a force in the direction - X or in the direction + X (on the pin 31 and thus) the carriage 32, with the pull and push rod 23 once the movement of the main link 9 in the closed position of Fig. 2c and once supported the movement of the main link 9 in the direction of the open position. Because the train and Push rod 23 is attached to the Ausstellvorrichtung 8, in particular to the main link 9, that when exercising a Kaft in the direction + X or in the direction -X on the carriage 32 parallel to the sash profile rail 4 always a force component acts such that the Movement of the main link 9 in the gate 12 of the sash 3 in the corresponding direction X and in the direction -X is supported. The direction of action of the pressure and tension rod 23 is always obliquely to the direction X except in the closed position.

The type of configuration of the energy store 21 opens up several advantageous options and design options.

In order to form the energy store 21, it is initially advantageous if one or more springs 35, 36, 37, 38 are formed in or on the energy store 21.

Preferably, the one or more springs 35, 36, 37, 38 are arranged in the interior of the housing 22. The housing 22 has - in order to allow the arrangement of components in its interior - advantageously a base housing 39 and a closure cover 40, preferably one which is simple and stable with edges in longitudinal grooves of the housing can be inserted.

The one or more springs 35, 36, 37, 38 are formed in a preferred embodiment as coil springs. Alternatively, the springs are formed as elastomer springs. Because with these types of springs, the described functionality can be easily realized with low space requirement.

The one or more springs 35, 36, 37, 38 are further formed in a further preferred embodiment as compression springs. The one or more springs 35, 36, 37, 38 also preferably have a linear characteristic with a constant spring constant, which is advantageous in a manner to be described. Alternatively, it is also conceivable to provide another (suitable) spring characteristic, such as a progressive spring characteristic.

According to a further preferred and simple construction embodiment, the one or more springs 35, 36, 37, 38 are preferably arranged between the carriage 32 and the housing 22 or a part in the housing 22.

According to a simple embodiment, only a single, two or more springs, in particular helical springs 35, 36, 37, 38 between another in at least one position on an inner side of the housing 22 supporting component - an abutment shoe 41 - in the housing 22 or directly an inner wall of one of the end faces of the housing 22 (FIG. Fig. 4 ).

According to a further advantageous embodiment are on both sides of the carriage 32, one or more of the springs 35, 36, 37, 38 respectively between each in at least one position on an inner side of the housing 22 supporting abutment shoe 41, 42 or other component in the housing 22nd or directly on an inner wall of one of the end sides of the housing 22 (FIG. Fig. 1 . 2 . 3 ).

If two or more springs 35, 36, 37, 38 are used on each side of the carriage 32, they are preferably parallel to one another. The use of two or more parallel springs 35, 36, 37, 38 (and parallel) springs 35, 36, 37, 38 allows the use of springs 35, 36, 37, 38 of smaller diameter than when using only a single Spring 35, 36, 37, 38 on one or each side of the carriage 32. Thus, the energy storage is designed to assist in opening and / or closing the wing (1) and moving to the maximum open position and / or To close the closed position of the wing (1).

The basic function of the arrangements Fig. 1 to 3 is as follows. The wing 1 is tilted when opening or closing by hand. When moving the wing 1 in its closed position of the carriage 32 is moved over the pull and push rod 23. Here, the two springs 35, 36, which lie on one side of the carriage 32 (here on the side facing away from the pull rod side). This dampens the closing movement. Too hard striking is avoided. The springs 35, 36 store energy (see Fig. 2c ). When opening the wing 1, this energy is released again, which is the opening in the position of Fig. 2a facilitated. When moving the wing 1 in its open position against or after Fig. 1-3 at the same time the two on the side of the pull and push rod 23 lying down springs 37, 38 stretched. This dampens the movement of the wing 1 before reaching the open position. Too hard striking in this open position is avoided in this way. In the renewed closing now support these two springs 37, 38 on the side of the pull and push rod 23 by the energy stored in them the closing movement.

Although the forces of the springs 35, 36 and 37, 38 act on both sides of the carriage 32 so to speak against each other, i. the forces of the springs 35, 36 on one side of the carriage 32 reduce the forces of the springs 37, 38 on the other side of the carriage 32. However, since the force curve depends linearly on the way, the spring effects lift only in one (here middle ) Neutral position on and not otherwise (if the springs are designed the same, which is advantageous, but not mandatory). Rather, the result is a particularly harmonious opening and closing behavior over the entire opening angle of the sash.) In this case, the entire design is such that the springs do not move the sash out of the open or closed position from the outside without the user applying force can.

The abutment shoes 41, 42 are substantially stationary relative to the housing 22 in the interior of the housing 22 in the X direction. This means that although it may be provided to change their position for adjustment and adjustment purposes (this option will be described in more detail below, but that they are stationary in the X direction after setting in operation when opening and closing in the housing 22. Preferably, only the carriage 32 is displaceable with the pull and push rod 23 when opening and closing in the housing 22 as a whole.

It is advantageous if the helical springs 35-38 are penetrated by one or more rods 43, 44. This protects them in a simple manner from buckling. In this case, the one or more rods 43, 44 preferably both one or more of the components slide 32 and abutment shoes 41, 42 and the springs 35 - 38 enforce. You can also be set in the housing 22 in the end faces.

It is also conceivable and advantageous and expedient to provide the energy storage 21 with an adjusting device which serves to adjust the location of the abutment of the springs 35-38 and thus a spring preload. To Fig. 3 and 4 This adjusting device is formed by the fact that the abutment shoes 40, 41 and the carriage 32 by an adjusting screw 45 - a spindle screw - are interspersed. The distance of the abutment shoes 41, 42 and thus the spring preload is adjustable with the adjusting screw 45. Preferably, a provided with a torque transmission contour head 49 of the adjusting screw 45 from a location outside the housing 22 is accessible and rotatable. As can be seen, the head 49 can also be outside of the housing 21. The position of the adjusting screw 45 in the X direction is thus substantially invariable. The adjusting screw 45 is rotatable. This can be achieved (in a simple way) by means of a small plate 51 with a recess 52 which engages in an edge groove 53 of the adjusting screw 45.

In this case, the adjusting screw 45 preferably passes through the middle slide 32 in a (here central) hole 46, which is not provided with an internal thread. The other two outer abutment shoes 41, 42, however, preferably have holes 47, 48 with an external thread of the adjusting screw 45 corresponding internal thread, so that the adjusting screw 45 engages screwing into the abutment shoes. By turning the adjusting screw 45, the distance between the outer abutment shoes 41, 42 to each other and their position in the housing 22 in the X direction can now be changed. In this way, the spring bias of the provided between these abutment shoes 41, 42 springs in a certain frame - simple and advantageous - be preset.

In simplified versions of the energy accumulator 21, springs are not arranged on both sides of the carriage 32, but only one or more of the three springs 35, 36, 50 (considered relative to the main extension direction X of the wing frame spar 4) will only be opened one side of the carriage 32 between the carriage 32 and then only one available abutment shoe 41 is arranged, on which the pull and push rod 23 engages. One of these variants shows Fig. 4 , Here, the arrangement is such that only from the achievement of the closed position damping and reopening from this closed position supporting this movement is realized. Then fall the springs 37, 38 and the abutment shoe 42 of the arrangement Fig. 3 path. Although the abutment shoe 41 is adjustable with the adjusting screw in the X direction. Its position, however, is fixed in the housing 22 when opening and closing the wing, when the adjusting screw 45 is not twisted. By twisting the spring preload can in turn be easily adjusted.

According to an alternative embodiment (not shown here), however, the arrangement is such that only before reaching the open position damping and closing the wing from the open position supporting this movement is realized. Then, the springs 35, 36 and the abutment shoe 41 of the arrangement fail Fig. 3 path. <B> reference numerals </ b> wing 1 frame 2 casement 3 profile Holme 4 - 7 A stay mechanism 8th main link 9 support links 10 spigot 11 scenery 12 fitting part 13 fitting groove 14 locking pin 15 Corner transmission 16 fitting part 17 fitting part eighteen articulated arms 19, 20 energy storage 21 casing 22 Pull and push rod 23 Mounting foot 24 Stege 25 screw 26, 27 front 28 bolt 29 pen 30 hole 31, 31 ' carriage 32 pen 33 hole 34 feathers 35, 36, 37, 38 Headers 39 cap 40 Shoes 41.42 rods 43, 44 adjusting screw 45 holes 46 - 48 head 49 feather 50 plate 51 recess 52 edge groove 53

Claims (13)

1. An extension device for a window or a door having a frame (2) and a sash (1) movable in relation thereto having a sash frame (3), which comprises at least the following features:

   a. one or more connectable connecting rods (9, 10) which can be articulated with the sash (1) and the frame (2) at least at one point (A),

   b. an energy accumulator (21), which comprises one or more springs (35-38) and a pull and push rod (23), which is attached directly at a point (B) to the connecting rod (9) of the extension device,

   c. wherein one or more of the springs (35-38) are provided to assist the movement of the connecting rod (9) of the extension device at the point (A) at least in a first movement direction (X) by way of a force exertion on the push and pull rod (23) and/or to damp the movement of the connecting rod (9) of the extension device at the point (A) by way of a force exertion on the push and pull rod (23) in at least one second movement direction (-X) opposite to the first movement direction (X),

   d. wherein the extension device (8) is designed as an extension scissors hinge, having a main connecting rod (9) and an auxiliary connecting rod (10), wherein the connecting rod on which the pull and push rod (23) engages is the main connecting rod (9),

   e. wherein the energy accumulator (21) comprises at least one housing (22), which has an elongated shape and in which a carriage (32) is displaceably guided, on which the pull and push rod (23) engages,
   characterized in that

   f. the pull and push rod (23) is attached at a location (B) on the main connecting rod (9), which is located spaced apart from the location (A) at which the main connecting rod (9) can be linked to the sash (1),

   g. the housing (22) of the energy accumulator is arranged parallel to the main extension direction (X) of a sash frame spar (4) on said spar in the installed state, and

   h. an end face (28) of the housing (22) comprises an opening (29), out of which the pull and push rod (23) protrudes in a longitudinally-displaceable and pivotable manner, wherein the end of the pull and push rod (23) protruding outward out of the housing (22) is arranged on the main connecting rod (9) of the extension device (8), and

   i. the location (B) of the linking of the pull and push rod (23) is located offset from the location (A) of the linking of the main connecting rod (9) on the sash frame (1) in such a manner that the location (B) describes an arc around the location (A) during the opening and closing of the sash.
2. The extension device according to Claim 1, characterized in that the extension device is moved into an open position in the first movement direction (X) and is moved into a closed position in the second movement direction (-X).
3. The extension device according to any one of the preceding claims, characterized in that, in the installed state, the main connecting rod (9) is articulated at its one end at the location (A) on the sash frame (3) and is articulated at its other end on the frame (2) at the location C, and at the end at the location A at which it is linked on the sash frame (3), it is moreover displaceably guided thereon, in particular parallel to the main extension direction X of the sash frame (1).
4. The extension device according to any one of the preceding claims, characterized in that the pull and push rod (23) is linearly movable and pivotable to a limited extent in relation to the main extension direction, so that the action direction of the pull and push rod (23) in relation to the main extension direction changes during the opening and closing of the sash (2).
5. The extension device according to any one of the preceding claims, characterized in that the location (B) of the linking of the pull and push rod (23) on the main connecting rod (9) is located between the location (A) of the linking of the main connecting rod (9) on the sash frame (3) and the location (C) of the linking of the main connecting rod (9) on the frame (2), wherein preferably the location (B) of the linking of the pull and push rod (23) is located close to the location (A) of the linking of the main connecting rod (9) on the sash frame (1), in particular offset by 2 to 100 mm in relation to this location.
6. The extension device according to any one of the preceding claims, characterized in that

   a. the one or more springs (35, 36, 37, 38) are formed as coiled springs or as elastomeric springs, and/or

   b. the one or more springs (35, 36, 37, 38) are formed as compression springs, and/or

   c. the one or more springs (35, 36, 37, 38) have a linear or a progressive spring characteristic curve, and/or

   d. two or more of the springs (35, 36, 37, 38) are arranged parallel to one another.
7. The extension device according to any one of the preceding claims, characterized in that

   a. the one or more springs (35, 36, 37, 38) all - observed in relation to the main extension direction X - are arranged on a common side of the carriage (32) in the housing (22), and/or

   b. the one or more springs (35, 36, 37, 38) - observed in relation to the main extension direction X - are provided distributed in the housing (22) on both sides of the carriage (32).
8. The extension device according to any one of the preceding claims, characterized in that the one or more springs (35, 36, 37, 38) are each supported on the sides thereof facing away from the carriage (32) on an abutment part, in particular on an abutment shoe (41, 42) between the carriage and the inner side of the housing (22).
9. The extension device according to any one of the preceding claims, characterized in that the one or more springs (35, 36, 37, 38) are each supported on the sides thereof facing away from the carriage (32) directly on the inner side of the housing (22).
10. The extension device according to any one of the preceding claims, characterized in that the energy accumulator (21) is designed to assist opening and/or closing of the sash (1) and to damp of movement into the maximally open position and/or the closed position of the sash (1).
11. A window or a door, characterized by an extension device according to any one of Claims 1 to 10.
12. A method for installing a window according to Claim 11, characterized in that the energy accumulator is installed on the window after the extension device.
13. The method according to Claim 12, characterized in that the energy accumulator is installed on the window by retrofitting on the extension device.

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