ES2621795T3 - Easy to use hardware and procedure for a parallel sliding window (folding) - Google Patents

Abstract

Window with a window frame (1), a sliding and stationary sheet and a parallel sliding sheet hardware in the window frame (1), where during a sliding sheet unlocking by means of a handle the sliding sheet is It releases a little pressure on the sliding sheet exerted by the sealing elements, compressed together in the hermetic position, of the window frame, two carriages (4a, 4b), movable on a tread rail, coupled to each other remotely by means of a first link bar (16), and with upper sliding elements (5a, 5b), which can be moved together on a guide rail (27) and kept at a distance from each other by means of a second link bar (26), wherein each of both carriages (4a, 4b) and each of the two sliding elements (5a, 5b) has an extension scissor with an extension arm (10a, 10b; 20a, 20b); characterized in that at least one energy accumulator unit (E) in the form of a tension or compression spring (15, 25) is coupled to one of the extension arms (10a, 10b; 20A, 20b) of the carriages (4a, 4b) or the sliding elements (5a, 5b), during the parking movement of all extension arms (10a, 10b; 20a, 20b) from the closed position to the parking position of the accumulator unit of energy (E) absorbs energy, because the absorbed energy is accumulated or stored, when at least one of the extension arms (10a, 20a, 10b, 20b) has reached an embedded position, so that during a movement Sliding of the sliding door accumulates the energy, and because after a disconnection of the embedded extension arm or the embedded extension arms from its embedded position, the energy accumulator unit (E) releases accumulated energy for a pivotal movement of re greasing of the extension arms (10a, 10b; 20, 20b) to a closed position. and because the prestressing of the springs (15) in the closed position of the extension arms (10a, 10b; 20a, 20b) is manifestly lower than in the parked open position of the extension arms (10a, 10b; 20a, 20b).

Description

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

65

DESCRIPTION

Easy to use hardware and procedure for a parallel sliding window (folding)

The invention relates to a window with a window frame, a sliding and sliding sliding sheet and a hardware. This sliding sheet can move in parallel. It has a parking position (in its parallel parking) in which it can slide (to open and close). It has a closed position, in which it has been displaced in the window frame and is pressed against its sealing. Between the closing position and the parallel parking position there is a transition phase, during which the extension arms are deployed by pivoting or retracted by pivoting, depending on the direction of movement, that is, it is they pivot to open, and they retract by pivot to reach the closed position from the parallel parking of the leaf.

As for the hardware, the positions refer to the positions of the extension arms, that is to say its closing position and its position deployed by pivoting as well as the transition phase as the “parking movement” or the movement of positioning With the hardware mounted, these arm positions are transferred to the sliding blade.

The fittings for parallel adjustable windows are known, for example from EP 619 410 A1 or EP A1 1 959 080. These fittings have two lower carriages sitting on a sliding rail that can be fixed in the frame of the leaf for the sliding sheet. and kept separated at a fixed distance from each other by means of a tie bar and two upper sliding elements, movable on a sliding rail fixed to the window frame, kept separated from each other at a fixed distance by a link bar. The carriages and the sliding elements are linked, each of them, by means of an extension scissor to an extension arm. For the drive, the hardware has, on one of its sides, the front side of the blade, a drive handle, which, through drive rods and deflection pieces, is attached at the corners of the blade to the front carriage and to the element of anterior slip.

In assembled state, known hardware works reliably. However, for the person who opens or closes the blade there is a difficulty there are possibilities for improvement because it can be difficult to press the (heavy) blade vigorously during its movement to the sealing position (= positioning movement) and hold it safely during its movement to its position parallel to the window frame (parking movement).

EP 222 092 A2 discloses a tool for a folding sliding leaf, in which, by means of an operating lever, a leaf is initially moved to an inclination position and then, if the rotation is continued, it is moved to a position parallel parked. The blade is supported by two cars, each of which has a pivotable carrier arm. Document DE 87 07 044 U1 discloses a fitting for a slidable sliding sheet, in which the sheet on one hand is prestressed in the closed position in the closed position and in a parallel stationary position, in the parking direction. For this purpose, during pivoting the blade moves over a zero position of the prestressing equipment.

The objective of the invention is to at least simplify the closing process and configure it to be easier to operate.

This objective is achieved thanks to a window with the characteristics of the revindication 1. In the subsequent subordinate claims this solution is refined.

At least the beginning of a parking movement (removal pivot) of the sheet from its sealing position is relatively simple. Already during the unlocking of the blade by means of the handle, the blade receives some reduction in pressure due to its sealing position caused by the compressed sealing element in the sealing position, of the window frame. Also the movement within the scope of the transition phase (leaf parking) is relatively easy.

Before the parking movement, the energy storage unit, coupled to the extension arm, incorporates energy. During the entire sliding movement of the blade to its open position, the accumulator unit coupled to the pivoting extension arm stores this energy. The stored energy is released by the accumulator unit - coupled to the pivoting extension arm - only when the blade has been slid back and a positioning movement begins towards the closed position.

The release of the accumulated energy facilitates the positioning movement. It also supports the maintenance of the parallelism of the leaf with respect to the window frame, when above and below it has been planned and below an energy store of this type.

The energy accumulator can have such a robust configuration that it carries out the movement of

2

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

65

positioning by itself once the embedded position of the arms has been released. In this case, a prestressing is used in the energy accumulator that still makes a force available when the sliding blade is housed in the window frame and has reached its closing position.

Overcoming this basic force during opening can be left to the user

The invention is described below in greater detail and with the help of schematic drawings of various realization examples:

Figure 1 schematically and perspective shows essential parts of the hardware, the window frame and the leaf frame, in one embodiment.

Figure 2a shows the bottom part 4 of the hardware in top view in its open position.

Figure 2b shows the same extension part as in Figure 2a, seen in the direction of the opening (perpendicularly with respect to the plane of the paper). In this aspect, Figure 2b corresponds to the head. The blade extends down.

Figures 3a, 3b show the hardware in the same representation as in Figures 2a and 2b, but in their closed position.

Figure 4 shows the previous car 4b in open position, but in an enlarged representation and in greater detail

Figures 5 show the sequence of movements of the lower extension part in four images.

Figure 6a shows the upper extension part 5 of the hardware in the open position (seen upwards on the extension part, mounted, in the window frame 1).

Figure 6b shows the same extension part as Figure 5a, but as a cut in a middle plane M.

Figure 6c is the previous section of Figure 6a with the lock by the auxiliary arm 30, only seen in the direction from above (in Figure 6a from behind). It has not represented the corresponding control block 12a, but its function corresponds to that of the control block 12, cfs. Figure 1, above and below.

The Figures show the hardware in a preferred embodiment. Only Figure 1 also shows sheet 2 and the corresponding window frame.

Since the positions of the extension scissors (top and bottom) correspond to the positions of the sheet with respect to the window frame, in the other figures a representation of sheet and window frame is not necessary.

In Figure 1 the parts of the window and the hardware have been shown in a schematic form only and separated from each other, since the basic structure and the basic cooperation of the parts are generally known. The window frame 1 and a stationary and sliding leaf frame 2 have been shown. A bar not shown in the control handle 3 located in the vertical front leaf frame is provided for unlocking and unlocking.

The lower part 4 of the hardware comprises a front carriage 4b and a rear carriage 4a, each with an extension scissor. The upper part 5 of the hardware also comprises a front sliding element 5b and a rear sliding element 5a, both of which are also provided with an extension scissor. "Previous" is on the side of [GS, Griffseite].

So-called extension scissors are at least one extension arm. With each of the corresponding extension arms, an auxiliary handlebar is preferably pivotally coupled, so that the concept of "extension scissors" also encompasses these.

In accordance with Figure 2a, on the extension arm 10a of one of the carriages 4a, preferably - as shown in the rear carriage, an energy storage unit E is attached, preferably in the form of a compression spring 15.

A traction arm 13 is articulated by means of a coupling member 11a in a central region of the extension arm 10a. Its other end 13 'is slidably disposed on an adjustment ring 14 or similar sliding element on an element 16 (generally a round bar) that links both carriages 4a and 4b of the lower part 4 of the hardware.

In the direction of the corresponding carriage 4a, a support for the energy accumulator unit E is arranged on the binding element 16 in the form of a compression ring 16a arranged locally fixed with respect to the bar 16.

It can be seen that the adjusting ring 14 and the end, attached or fixed thereto, of the accumulation unit 15, undergoes compression with respect to the compression ring 16a during the movement of the extension arm 10a from the closing position of the Extension scissors according to Figure 3 even in the separate position according to Figure 2 and thereby enter an increase in energy (or accumulation of energy).

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

65

Said increase in energy is stored by the fact that the parked position of the extension arms of the hardware is embedded, as can be seen in Figure 4.

Figure 4 shows the extension arm 10b, which is arranged on the handle side (referred to as the front side) of the hardware, specifically of the bottom part 4 of the hardware. In a special configuration, the arm 10b is held in the extended position by means of an L-shaped groove 17, in an advanced sword 18 in the carriage 4b. In Figure 4, this slot 17 can only be seen in a linear section below a control piece 12, which houses the advanced sword 18 in the position shown in Figure 4 or in the position of the lower carriage 4b. For further explanations about this advancing sword 18 in the carriage and of the control piece 12, reference is made to the sequence of figures of Figure 5, where in addition, this control piece 12 can be observed separated and remote with respect to the sword advanced 18. The angled section 17 'angled in the form L 17 is coated in Figure 4, but the munon 11 c is housed in this angled section 17'.

The embedded position can be recognized in Figure 5a by the fact that the articulation 11c of the auxiliary handlebar 11b of the extension arm 10b is embedded or locked in the transversely oriented housing section 17 'of a control slot 17 of the sword 18. This lock is releasable when the articulation 11c is moved from the cross-sectional section of the control slot 17. This happens by means of the control block 12 which has a corresponding housing slot 12b for a munon aligned with the articulation 11c, with the that the articulation, which is guided in a munon protruding downward in the control slot 17, is removed from the bead (corresponding to the extremity section 17 'of the control slot 17 in the sword 18) and is transferred to the straight section 17 'of the control slot 17. This time interval of the disengagement is shown in Figure 4, corresponding to the representation of Figure 5b, in the that a state approximately equal to that shown in Figure 4 is achieved, only in this case the control block 12 has not been partially cut out, so that in this case it is not possible to observe the housing - the release slot 12b.

For a more detailed description of this type of release from an embedded state, refer to WO 2010/079461 (of HAUTAU), and all! to the control block specially formed in Figure 7a, the control slot provided in its transverse direction with an insert section 41b in Figure 1 in the advanced sword 40 and the corresponding embedded state of the arm stationed 30 in Figure 2 of the document mentioned. The time of entry of the arm embedded with the control shoulder 39a can be seen in Figure 6b of the mentioned document, where this shoulder 39a corresponds to the shoulder 11c as an articulation in Figure 4 of the present.

Therefore, in Figure 4 only the release of the blocked state can be observed.

In this regard it should be noted that the state of the recessed can only be carried out by one of the two lower arms. It can be the other arm in which the energy accumulator unit E is not articulated, that is to say the arm 10b, as shown in Figure 4 and in Figure 2a. However, the lock can also be arranged additionally in the accumulator unit E, in the same arm 10a. A blockage in only one of the upper arms 20a, 20b is also possible. From the functional point of view, it should be understood that the term "insert" means that the parked position must be embedded. In the upper part, the upper control block 12a functionally corresponding to the upper control block 12a, in relation to the arrangement 18a, 17a, 17a ', of Figure 6a is occupied.

This insert in the parked state is achieved for four extension arms, when only one of these extension arms has an insert according to the representation of Figure 4. If a high symmetry is desired, an insert can be provided both up and down. Due to the different configuration of the arms, it can be done with some small difference, but from a functional point of view it works in the same way. Also up, in Figure 6c the advanced sword 18a can be seen, which has the groove guide 17a of Figure 6a. The munon with articulation that enters the bead breaker, that is in the insertion section 17a 'of the control slot 17a, bears the reference number 30a in Figure 6c. It is a component of the auxiliary handlebar 30 on the extension arm 20b of the upper extension part 5. Cooperates in a blocking and unblocking manner with the upper control block 12a of Figure 1.

The sequence of the entry of the lower part 4 of the hardware in the closed position is shown in the sequence of Figures 5a, 5b, 5c and 5d. Figure 5a has already been mentioned. It shows the embedded state of the auxiliary arm 11b, which keeps the main arm 10b embedded as an extension arm in the offset 17 'of the control slot 17. This also maintains the other arm (coupled above the sheet not shown and of sheet supports P1 and P2) in the embedded position.

The other arm 10a is prestressed by the energy accumulator unit E, shown here as compression spring 15. In this regard, the energy accumulator unit 15 has a longitudinal extension b0, which is smaller than the disengaged state b2, shown in Figure 3b. The spring is therefore tensioned and the energy has been stored by the upper arm 10a. The insert is carried out by the anterior arm 10b.

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

65

For the purposes of Figures 5, this distribution of tasks from both arms should be accepted. However, according to the preceding exposition it can also be configured in another way, or the insert and the accumulation can be assigned to the same extension arm.

Figure 5a corresponds in inverted observation to Figure 2a. Figure 5a shows a fitting part 4 for a blade that hits the right, Figure 2a for a blade that hits the right, with the control block 12 shown on the left in the Figure.

The three comparative lines F, F1 and F2 represent the relative movement of the individual elements of the lower part 4 of the hardware. The reference line F extends centrally through the non-movable control block 12.

The accumulation of energy has taken place according to Figure 5a. It is associated with extension arm 10a. In Figure 5a the bottom part 4 of the hardware moves to the right. This corresponds to movement v1. In Figure 5b it reaches control block 12. Sword 18b has been entered and a recess in the control block (= control block), corresponding to that recess 12b of Figure 4, not visible in Figure 5b, releases the embedded state of the pivot joint 11c of the auxiliary arm 10b.

The energy accumulated by compression of the compression spring 15 with the storage length bo begins to release, bo grows, and the leaf supports P1 and P2 (usually each of them is metal profile) approach the closing state, as explained in Figure 5c. At the same time, cars 4a, 4b move a section in the direction to the left, corresponding to movement v2. This can be seen in Figures 5d in contrast to Figure 5c. In Figure 5d the movement speed v = 0.

In contrast to Figure 5b, in Figure 5c the length of the compressed spring 15 has grown to b1, whereby a corresponding potential energy has been transferred in the form of kinetic energy of the sheet (not shown in Figure 5c, but it is represented by the reduced angular position of the extension arms). b1 is now only slightly greater than bo, since the distance of the carriage 4b from the control block 12 is still reduced, but the release from the embedded state has already taken place, as can be seen in the modified pivot position of the pivoting arm 10b. Cfs also the reduced distance a1 with respect to the locked state with distance a0.

Corresponding to the extension of the energy storage unit 15, the separation of the leaf support, P2, usually a profile, and also the leaf support, PI, from the vertical plane of the tie bar 16. This difference with respect to the position previously approached with distance a0 can also be observed, such as the extension b1 with respect to b0 in the energy accumulator unit E, represented as compression spring 15 in Figures 5.

Between Figure 5c and Figure 5d the complete initial pivot movement has taken place, whereby the extension arms 10b and 10a are extended by pivot and have adopted a parallel position with respect to the link bar 16. The separation a1 it has been further reduced and represents a2 which is essentially zero. Correspondingly, the length of the spring under delivery of the stored energy has increased to b2.

In the time interval between Figure 5b, but in fact just between Figure 5c and Figure 5d the potential energy stored in the energy storage unit 15 / E has been delivered, to move the sheet with its gravitational weight towards its position of closing, or to support the user in guiding the sheet towards the closing position. This corresponds to an "upward movement" from a reducedly low position (considered in the vertical direction, due to the weight of the blade), which uphill is backed by the energy released from the accumulation unit E.

As a result, the user must exert less force. The energy released between especially the positions of Figures 5c and 5d is released during the return pivot movement of the arms. This happens after the disconnection, as shown in Figure 5b.

Other partial sections can be seen in the sequence of the figures. In Figures 5a and 5b it can be seen that the stored energy moves together with the lower part 4 of the hardware in a parallel direction. During the sliding movement, the energy storage unit stores the energy that should be released later.

This happens during the sliding movement of the carriages, and specifically in the direction towards a full opening, as well as in the direction towards the closing position. During this condition, at least one of the arms 10a, 10b is embedded, or it is also possible that none of these arms is embedded, when an upper scissor construction intervenes, having an insert in at least one of its arms.

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

55

60

65

Finally, in an inverted sequence from Figure 5d to Figure 5c it can be seen how energy is extracted from a closed position and accumulated. In this case, the energy accumulator unit is compressed from the closed position with the extension b2 when the parking arms 10a, 10b pivot unfolding. This happens by means of the traction arm 13, which is pulled to the left by the extension arm 10a in Figure 5c, and thereby loads the energy accumulator unit E, or compresses the spring 15. Continuous compression by pivoting of deploying the arms 10a, 10b ends in the engagement condition according to Figure 5b; in this state, the potential energy then achieved by the compression of the length of the spring to the length b0 "is stored in the embedded state".

All individual sections of the joint movement can be recognized with the aid of the sequences of Figures 5. Each of the sections is self-contained and can be implemented in the corresponding other sections in another way.

In Figures 6a to 6c, the upper part 5 of the hardware can be recognized.

All !, in the extension arm 20b of the anterior sliding element 5b a short arm 30 is articulated, the other end of which penetrates with a munon in the joint 30a in a guide groove 17a in the sword 18a and engages therein end of the extension movement of the extension scissors 30 / 20b in a lateral locking section 17a 'of the groove 17a where it is located - as can be seen in Figures 6a and 6c. By means of the control block 12a it is removed from there!, When the upper sword 18a enters a longitudinal housing of the control block 12a, as also explained in Figure 4 for the lower control block 12 with the release slot 12b

As for the upper part of the hardware, the link bar 26 is housed between both sliding elements 5b and 5a on its glide rail 27. At the end of the extension arms 20a, 20b, a link bar 28 is articulated arranged , which is arranged on the top sheet on its front side.

The traction member 21 acts as an auxiliary arm on the sliding ring 24, while the spring 25 is supported on the fixed support 24a.

The separation between the fixed support and the sliding ring and with it the tension of the compression spring can be harmonized with each other above and below.

It has previously been mentioned that from a functional point of view the storage by means of an auxiliary arm 13 in the case of the lower hardware part 4 is equal to that storage by the auxiliary arm 21 in the case of the upper part 5 of the hardware . From a constructive point of view there is some difference in the parallelogram formed by the link arms and bars of the upper part 5 of the hardware, as indicated in Figure 6a.

The ends of the extension scissors are linked to each other articulated by means of the link bar 28, and the separation of the link bar 26 which creates the separation of the sliding elements 5a, 5b has a plate configuration.

In said link bar 26, an elongated central groove, in which the spring unit 25 is placed, is arranged closest to the sliding element 5a. To this end, an intermediate bar 26a is fixed between two points 24a, 24b. In this example, on this intermediate bar, which can have a round configuration in cross section, the spring element 25 configured as a cylindrical spring is threaded. It is compressed on this intermediate bar 26a, when the articulation point as a slip ring 24 moves along this intermediate bar 26a, to shorten the separation between points 24,24a.

Although a cylindrical spring of a mechanical nature is shown in Figures 6, other types of spring are also suitable, which can absorb compression forces. Gas compression springs, wrapped mechanical springs, accumulation springs and other elongated spring-like members are possible, which are in a position to apply a compression force, after having been previously compressed or loaded in the longitudinal direction.

The enlarged cutout of Figure 6c shows the left region of Figure 6a, viewed from the rear side. In this case, the locked state is shown at the articulation place 30a of the auxiliary handlebar 30, as it penetrates the bead 17a 'of the guide groove 17a.

The energy absorptions by the springs 25.15 as examples of a corresponding energy storage unit E can be harmonized with each other by providing such an upper spring and such a lower spring, specifically based on the elastic characteristics of the springs.

In other words, the loading of the springs takes place by pivoting the unfolding arms of the parking arms according to a feature, which extends essentially in the same manner upwards as

5

10

fifteen

twenty

25

30

35

40

down.

Figures 3a and 3b show the lower fitting part 4 with the carriages 4b and 4a in the closed (locked) position of the extension arms. A comparison of the length b2 of the springs 15 in the closed position according to Figure 3b, which corresponds to the sealed position of the corresponding sheet, with the length bo of the springs in the extended position of the scissors of extension in Figures 2a, 2b shows that the length b2 of the springs is clearly greater than the length b0 of the springs.

This means that the prestressing of the springs 15 in the closed position of the arms (and of the blade) is manifestly smaller than in the parking position of the extension arms. The accumulated energy is released in the form of force, as soon as the end of the closing sliding movement of the lower part 4a, 4b of the hardware is achieved, the blocking of the extension scissors (and with it of the blade) is released from the position parked in the sealed position (locked). This pressing movement, caused and carried out by the operator - especially by means of the handle 3 - is markedly supported by the energy stored and thereby released from the compression spring.

This is useful, because the process of applying the pressure on the sheet in its sealed position requires more force than the parking movement. The latter is already facilitated because the sealing elements pressed together in the closing position press the parking process during the unlocking of the leaf away from the sealing position, while during the process of applying pressure to the leaf At the end of the pressure application it is necessary to press against the resistance of the sealing elements.

The parking movement is also simplified by the fact that the leaf, especially in the case of heavy leaves, has the tendency to "fall" from the closed position after unlocking by means of the handle, that is to say to counterbalance somewhat User action. The arms are requested by the high weight and settle somewhat, so that it is a downward movement for the leaf, which in this way can be extracted more easily from the window frame and from its closing position. The energy that is released in this way is absorbed by the energy storage unit, additionally completed by the traction force of the user who extracts the blade from its closed position. Therefore, the energy accumulator unit not only supports the opening movement, but through this opening movement consumes its accumulative energy in the form of potential energy, and stores it in the first instance in the arm lock state , which have been explained in greater detail with the help of Figures 5.

This applies regardless of whether the energy storage unit E is arranged in the lower part 4 of the hardware or in the upper part 5 of the hardware. It is advantageous that it is associated in each case with the rear carriage 4a or with the sliding element 5a.

Preferably, an energy storage unit is applied, as shown in the figures, both in the lower part 4 of the hardware and also in the upper part 5 of the hardware, especially in the case of using the so-called parallel sliding blades. In this way it is possible to improve the initial pivoting movement in terms of its parallelism.

Claims (10)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 55 60 65 1. Window with a window frame (1), a sliding and stationary sheet and a parallel sliding sheet hardware in the window frame (1), where during a unlocking of the sliding sheet by means of a handle the sheet The pressure on the sliding sheet exerted by the sealing elements, compressed together in the hermetic position, of the window frame, two carriages (4a, 4b), movable on a track rail, coupled to each other at a distance by means of a first link bar (16), and with upper sliding elements (5a, 5b), jointly movable on a guide rail (27) and kept at a distance from each other by means of a second link bar (26 ), where each of both carriages (4a, 4b) and each of the two sliding elements (5a, 5b) has an extension scissor with an extension arm (10a, 10b; 20a, 20b); characterized in that at least one energy accumulator unit (E) in the form of a tension or compression spring (15, 25) is coupled to one of the extension arms (10a, 10b; 20A, 20b) of the carriages (4a, 4b) or of the sliding elements (5a, 5b), during the parking movement of all extension arms (10a, 10b; 20a, 20b) from the closed position to the parking position the energy storage unit (E) absorbs energy, because the absorbed energy is accumulated or stored, when at least one of the extension arms (10a, 20a, 10b, 20b) has reached an embedded position, so that during a sliding movement of the sliding door the energy accumulates, and because after a disconnection of the embedded extension arm or the embedded extension arms from its embedded position, the energy accumulator unit (E) releases accumulated energy for a pivotal movement back of the extension arms (10a, 10b; 20 , 20b) to a closed position. and because the prestressing of the springs (15) in the closing position of the extension arms (10a, 10b; 20a, 20b) is manifestly lower than in the parked open position of the extension arms (10a, 10b; 20a, 20b). 2. Window according to claim 1, characterized in that the energy accumulator unit (E) is configured so robust that it carries out the parking movement itself as a return pivot movement, after the embedded position of the pivoting extension arms (10a, 10b; 20a, 20b). 3. Window according to claim 1 or 2, characterized in that a first energy accumulator unit (15) is coupled to an extension arm (10a) of the carriages and a second energy accumulator unit (25) is coupled to an arm extension (20a, 20b ') of the sliding elements. 4. Window according to one of the preceding claims, characterized in that the embedded position is associated with one of the extension arms (10b) of the carriages and is coupled through the other extension arm (10a) of the carriages to the unit energy accumulator (15). 5. Window according to one of the preceding claims, characterized in that the embedded position is associated with one of the extension arms (20b) of the sliding elements and is coupled through the other extension arm (20a) of the elements of sliding to the energy storage unit (25). 6. Window according to one of the preceding claims, characterized in that an extension arm (10b) of the carriages and an extension arm (20b) of the sliding elements are configured to fit at the same time. 7. Window according to one of the preceding claims, characterized in that an extension scissor of one of the carriages (4a, 4b) and / or of one of the sliding elements is articulated in the extension arm (10a, 20a) (5a, 5b) a traction arm (13, 21), whose free end is linked to an adjustment ring (14, 24) slidably driven along the tie bar (16,26) between both cars or sliding elements, and which is arranged at a distance with respect to the adjustment ring and - closer to the carriage or to the sliding element - a locally fixed compression ring (16a, 24a) is arranged in the connection means, between which and the adjustment ring is the energy storage unit (E) in the form of a pre-tensionable spring (15.25). 8. Window according to claim 7, characterized in that the traction arm (13, 21) is articulated in the extension arms (10a, 20a) of the carriage extension scissors (4a) or sliding element (5a) , seconds or later, that is, away from the handle, from the corresponding elements coupled together according to the movement, (4a, 4b; 5a, 5b). 9. Window according to claim 7, characterized in that the pressure ring (16a, 24a) is arranged in an adjustable manner to adapt the energy absorption by the energy accumulator unit (E; 15, 25) in the link bar ( 16, 26) in its position in the longitudinal direction. 10. Window according to one of the preceding claims, characterized in that an energy storage unit (15,25), especially for a parallel sliding leaf, is mounted to both the rear carriage (4a) and also to the rear sliding element (5a) and both are adapted to each other during their load in terms of their incorporation of energy or in terms of their characteristics.