DE102020109074A1 - DEVICE TO ASSIST THE CLOSING AND OPENING OF A LIFT-SLIDING ELEMENT - Google Patents

Abstract

The present invention relates to a device for assisting the closing and opening of a lift and slide element. The device comprises a base body for attachment to a sash of a lift-slide element, an axially extending first prestressing element with a first end and a second end which is hinged to a base body, an axially extending second prestressing element with a first end and a second End which is articulated to the base body, and a switching mechanism with a first and a second defined limit switch position, is coupled via the first end of the first prestressing element to the first end of the second prestressing element. The switching mechanism has an unstable equilibrium position between its two end switch positions, the two preloading elements being aligned with one another only in the unstable equilibrium position.

Description

The present invention relates to a device for assisting the closing and opening of a lift and slide element. According to the invention, the device particularly supports the closing of the lift and slide element to the effect that the lift and slide element or its sliding sash can be moved as gently as possible into its closed position. The device also supports the opening of the lift and slide element in that it can be moved from the closed position in the direction of its open position with as little effort as possible.

Conventional lift-and-slide elements such as lift-and-slide doors, for example, can have a significant weight of up to 400 kg or more. This can have the consequence that a correspondingly large amount of force is required to set the sliding sash of such a lift-slide door in motion, as is the case, for example, when the lift-slide door is opened from its closed position. Once the sash of such a lift-and-slide door has been set in motion, on the other hand, due to its weight, it has a not inconsiderable kinetic energy, which when closing such a lift-and-slide door can lead to the sliding sash hitting the frame when it reaches the closed position, This can lead to damage to the lift / slide door, especially at higher impact speeds. The same problem arises when such a lift-and-slide door is opened completely, since the sliding sash can also collide with the frame when it reaches the open position.

The invention is therefore based on the object of specifying a device with which a lift and slide element can be opened with only a small amount of force and which at the same time enables the lift and slide element to be closed gently.

This object is achieved with a device with the features of claim 1 to assist in the closing and opening of a lift-and-slide element such as a lift-and-slide door or a lift-and-slide window.

The device according to the invention for supporting the closing and opening of a lift and slide element comprises a base body which is designed to be attached to a casement of a lift and slide element. Two axially extending prestressing elements are articulated on the base body, so that they do not have to be mounted individually on the sash of the lift-slide element. In particular, the device has an axially extending first prestressing element, such as a first gas pressure spring, which has a first end and a second end which is hinged to the base body. Furthermore, the device has an axially extending second prestressing element, such as a second gas pressure spring, which has a first end and a second end which is hinged to the base body. Because the two preload elements are hinged to the base body and are thus carried by the same, the device can thus be handled in its entirety and mounted on a lift-slide element or its sliding sash, so that for this purpose the two preload elements are not individually handled and attached must be installed on the lift & slide element.

Furthermore, the device has a switchover mechanism which can be switched between a first limit switch position and a second limit switch position. If, for example, the switchover mechanism is transferred from its first limit switch position to its second limit switch position, the switchover mechanism cannot move beyond the second limit switch position. The same applies to a switchover process of the switchover mechanism starting from its second limit switch position in the direction of its first limit switch position in which the switchover mechanism cannot be moved beyond its first limit switch position.

The switching mechanism serves to a certain extent as a coupling element between the two prestressing elements, since the first end of the first prestressing element is coupled to the first end of the second prestressing element via the switching mechanism under a prestressing of the first and / or the second prestressing element. Regardless of the position or deflection of the two prestressing elements, they are therefore always in interaction with one another, since one prestressing element applies a prestressing force to the other prestressing element via the switching mechanism and vice versa.

The switching mechanism is designed in such a way that it has only a single unstable equilibrium position between its two limit switch positions. The two prestressing elements are therefore only aligned with one another in the unstable equilibrium position in question and are thus axially aligned with one another. Beyond or outside the unstable equilibrium position of the switching mechanism, however, the two preloading elements are not axially aligned with one another, with the result that only that force component of one preloading element which is in the direction of the axial extension of the other preloading element acts, interacts with it. If, for example, the second prestressing element is deflected with respect to the first prestressing element, then only that force component is transmitted from the second prestressing element to the first prestressing element which is aligned with it.

If in one position of the device, for example, the second biasing element is deflected relative to the first biasing element, which is more heavily compressed than the second biasing element, then in this position the biasing force exerted by the first biasing element is always greater than the force component of the second biasing element, which is directed in the direction of the first biasing element acts. This can be used to the effect that when the device is mounted on a lift-slide element, the first biasing element in the first limit switch position of the switching mechanism pushes the lift-slide element against the biasing force of the second biasing element in the direction of its closed position when the first end of the first Biasing element is supported on a fixed or stationary abutment.

In contrast, the second biasing element in the second limit switch position of the switching mechanism can urge the lift-slide element against the biasing force of the first biasing element in the direction of its open position when the first end of the second biasing element is supported on a stationary or stationary abutment.

The device can also be used to ensure that the lift-slide element gently assumes its open position without hitting the frame. In this case, the second biasing element in the second limit switch position of the switching mechanism urges the lift-slide element against the biasing force of the first biasing element in the direction of its open position when the first end of the second biasing element is supported on a stationary or stationary abutment. In contrast, the first biasing element in the first limit switch position of the switching mechanism can urge the lift-slide element against the biasing force of the second biasing element in the direction of its closed position when the first end of the first biasing element is supported on a stationary or stationary abutment.

As already explained above, the function of the switching mechanism consists essentially in deflecting one pretensioning element with respect to the other pretensioning element. If, for example, the second prestressing element is deflected relative to the first prestressing element during the closing process of the lift and slide element, the first prestressing element urges the sliding sash of the lift and slide element into its closed position, preferably until the prestressing force exerted by the first prestressing element corresponds to the force component of the second biasing element is in balance, which is aligned with the first biasing element. As a result, the lift and slide element can be closed gently by means of the first prestressing element without the risk of the sliding sash of the lift and slide element hitting the frame.

If it were not possible to switch the switching mechanism, the device according to the invention would not support subsequent opening of the lift-slide element, since in this case the sliding sash would always be pushed towards its closed position by the first biasing element.

If, therefore, the switching mechanism is transferred in the manner according to the invention in the closed position of the lift-slide element into its second limit switch position, the first preload element is then deflected relative to the second preload element with the result that the force component exerted by the first preload element, which in Direction of the second biasing element acts, is less than its biasing force. Thus, the second pretensioning element is now able to open the sliding sash of the lift-slide element against the pretensioning effect of the first pretensioning element or to urge it in the direction of its open position.

It is therefore due to the integration of the switching mechanism in the device according to the invention that a lift-slide element can be closed gently by means of the device according to the invention and opened without any significant expenditure of force.

So that the stationary abutment, on which either the first or the second biasing element is supported depending on the direction of movement of the lift and slide element, does not collide with the first biasing element when the lift and slide element is opened, it can be provided according to one embodiment that the abutment is perpendicular to Axial extension of the two prestressing elements is designed to be axially flexible. The abutment can thus, for example, be pushed back by the first prestressing element if it comes into contact with this during the opening process of the lift-slide element.

According to one embodiment, the switching mechanism can, for example, be L-shaped have angled switching element, which is also referred to here as an angle element and which in turn can be pivoted between the two limit switch positions. In this embodiment, the switchover or angle element has a first and a second leg, which are preferably aligned essentially perpendicular to one another. The first end of the first prestressing element is hinged to the free end of the first leg, whereas the first end of the second prestressing element is hinged to the free end of the second leg. Therefore, if the switchover mechanism and in particular its switchover element is in the first limit switch position, for example, the first pretensioning element can be supported on the abutment indirectly via the first leg of the switchover element. If, on the other hand, the switchover mechanism and in particular the switchover element are in the second limit switch position, the second pretensioning element can be supported on the abutment indirectly via the second legs of the switchover element.

In order to ensure that the respective preload element has a defined deflection compared to the other preload element, it can be provided according to a further embodiment that the first leg forms a first stop with which the first preload element comes into contact in the first limit switch position. The second leg can equally form a second stop with which the second preload element comes into contact in the second limit switch position. The stops in question can thus ensure that the switchover element cannot be pivoted beyond its respective limit switch position, so that the respective deflected pretensioning element has a defined deflection relative to the other pretensioning element.

Since the two biasing elements are hinged to the base body at their respective second ends and are under mutual biasing, it can be provided according to a further embodiment that the switching mechanism is mounted displaceably on the base body and is secured against lifting forces thereon. This can prevent the two prestressing elements from being deflected or buckling relative to one another at the same time. In particular, a swivel joint which can be displaced along the base body can be provided for this purpose, on whose axis of rotation the intersection of the two legs of the switching element lies.

According to yet another embodiment, the two prestressing elements can be constructed identically and in particular have the same spring stiffness. The fact that identical components can be used for the two prestressing elements is in particular due to the function of the switching mechanism, as this can ensure that, depending on the switching position of the latter, the spring force of one prestressing element, the force component of the other prestressing element acting in the direction of the same prestressing element overcomes.

As already explained above, the switchover mechanism is in its first limit switch position while the lift-slide element is opening, whereas the switchover mechanism has to be moved into its second limit switch position to open the lift-slide element. This switchover of the switchover mechanism into its second limit switch position can take place in that the wing of the lift-slide element is given an opening impulse, with the result that the switchover mechanism is switched to its second limit switch position due to the fact that it is in the closed position of the lift-slide element. Sliding element is supported on the abutment.

In addition or as an alternative to this, however, the device according to the invention can also comprise an actuation mechanism with which the switchover mechanism interacts in the closed position of the lift-slide element in such a way that when the lift-slide element is lowered, the switchover mechanism is pivoted from its first limit switch position to its second position. For example, the switchover element can be positively coupled to the transmission of the lift-slide element, by means of which it can be raised and lowered, in such a way that when the lift-slide element or its sliding sash is lowered, the switchover element is automatically switched to its second limit switch position. If the wing of the lift-slide element is therefore raised again in its closed position after it has been lowered, the switching element is already in its second end position, with the result that the first prestressing element is deflected relative to the second prestressing element and the second prestressing element thus moves the wing into its Can push open position.

• 1 eine Ansicht einer erfindungsgemäßen Hebe-Schiebetür ohne einen Festflügel zeigt;
• 2 das Detail „A“ der Figur in vergrößerter Darstellung zeigt;
• 3 eine Ansicht der erfindungsgemäßen Vorrichtung zeigt;
• 4 in drei Darstellungen unterschiedliche Zustände der erfindungsgemäßen Vorrichtung während des Schließens eines Hebe-Schiebeelements zeigt;
• 5 in drei Darstellungen unterschiedliche Zustände der erfindungsgemäßen Vorrichtung während des Öffnens eines Hebe-Schiebeelements zeigt; und
• 6 in zwei Darstellungen zwei weitere Zustände der erfindungsgemäßen Vorrichtung während des weiteren Öffnens eines Hebe-Schiebeelements zeigt.

In the following, the invention will now be described purely by way of example with reference to the drawings, in which:

• 1 shows a view of a lift-slide door according to the invention without a fixed leaf;
• 2 the detail "A" of the figure shows in an enlarged representation;
• 3 shows a view of the device according to the invention;
• 4th shows in three representations different states of the device according to the invention during the closing of a lift-slide element;
• 5 shows in three representations different states of the device according to the invention during the opening of a lift-slide element; and
• 6th shows in two representations two further states of the device according to the invention during the further opening of a lift-slide element.

In the following, first with reference to the 1 , 2 and 3 on the basic structure of the device according to the invention 50 as well as their positioning on a lift and slide door 10 received before afterwards with reference to the 4th until 6th the functioning of the device according to the invention 10 is explained.

the 1 shows a lift-and-slide element and, more precisely, a lift-and-slide door 10 with a surrounding frame 12th , which has a sliding sash 14th takes up the inside of the window frame 12th displaceable along an upper leg 18th and a lower leg 20th of the frame 12th is led. The sliding sash 14th in turn comprises a sash 16 , which is the glazing of the sliding sash 14th records.

Like the one in particular 2 can be removed is in the upper leg 22nd of the sash 16 an elongated recess that is open at the top 24 designed, which for receiving the base body 52 the device according to the invention 50 including their prestressing elements 54 , 56 and their switching mechanism 58 serves. In the upper thigh 18th of the frame 12th however, is a recess that is open at the bottom 26th formed in which the abutment 60 the device according to the invention 50 is arranged and mounted. As an alternative to the embodiment shown here, however, the base body can also be used 52 the device according to the invention 50 including their prestressing elements 54 , 56 and their switching mechanism 58 in the recess that is open at the bottom 26th the frame and the abutment 60 in the recess that is open at the top 24 of the sash frame 16 be arranged without this affecting the function of the device.

In the following, with reference to the 3 the structure of the device according to the invention 50 explained in more detail. Like depicting the 3 can be removed, has the device according to the invention 50 as already mentioned a base body 52 on, which as it were as a kind of housing or carrier of the device according to the invention 50 serves as this base body 52 the other components of the device 50 records. In particular, the device 50 an axially extending first biasing element 54 , which is a first gas spring 54 acts, and an axially extending second biasing member 56 on, which is a second gas spring 56 acts. The two gas springs 54 , 56 have a conventional design, each with a plunger that is guided in a cylinder. The first gas spring 54 has a first end 62 and a second end 64 on, with that being the second end 64 articulated with the main body 52 connected is. The second gas pressure spring 56 a first ending 66 and a second end 68 on, with the second end 68 articulated with the main body 52 is connected, see in particular also the 4th . In contrast, the first end is 62 the first gas spring 54 via the switching mechanism to be described in more detail 58 with the first ending 66 the second gas spring 56 coupled.

In the in the 3 shown state of the device 50 is the first gas spring 54 almost completely tensioned or compressed, whereas the second gas pressure spring 56 is almost fully extended, which means that the two gas struts 54 , 56 via the switching mechanism 58 are coupled together under bias.

With the switching mechanism 58 it is essentially an L-shaped angled angle element 70 , which has a first leg 72 and a second leg extending substantially perpendicular thereto 74 having. At the free end of the first leg 72 is the first end 62 the first gas spring 54 hinged, whereas at the free end of the second leg 74 the first ending 66 the second gas spring 56 is hinged.

As indicated by the static symbol of a floating bearing, the angle element is 70 thereby by means of a along the base body 52 sliding swivel joint 26th displaceable on the base body 52 stored and thus secured against lifting forces on it. The axis of rotation of the swivel joint 76 coincides with the intersection of the two legs 72 , 74 of the angle element 70 together so that the angle element 70 around the axis of rotation of the swivel joint 76 between a first limit switch position according to the third illustration of FIG 4th and a second limit switch position according to the third illustration of FIG 3 can be switched.

In the following, with reference to the 3 until 6th on the functioning of the device according to the invention 50 received, in this case also on further features of the device 50 is received.

Will the sliding sash 14th a lift and slide door 10 with one on the sliding sash 14th mounted device 50 closed as shown in the first illustration of the 4th is indicated by the arrow to the right, the angle element arrives 70 of the switching mechanism 58 and in particular the second leg 74 of the angle element 70 with the one on the frame 70 fortified abutment 60 according to the first representation of the 4th in Appendix. If the closing movement is now continued, this leads to the angular element 70 from its second limit switch position according to the first illustration of the 4th counterclockwise around the swivel joint 76 up to its first limit switch position according to the third illustration of the 4th is pivoted.

In the first limit switch position according to the third illustration of the 4th The first gas spring is now supported 54 at the abutment 60 from what due to the fact that the first gas spring 54 is almost completely compressed, causing the first gas spring 54 the sliding sash 14th pushes further to the right into its closed position, until the in the first representation of the 5 The position shown is reached in which the first gas pressure spring 54 almost fully extended and the second gas spring 56 is almost completely compressed.

Since in the first limit switch position according to the third representation of the 4th of the angle element 70 the second gas spring 56 opposite the longitudinal axis of the first gas pressure spring 54 is deflected, the biasing force of the first gas pressure spring acts 54 only the horizontal component of the preload force of the second gas spring 56 against, so that despite the decreasing pre-tensioning force when extending the first gas pressure spring 54 the second gas spring 56 can be compressed almost completely, as is the first representation of the 5 shows. In the first representation of the 5 there is thus the pretensioning force of the first gas pressure spring 54 in equilibrium with the horizontal component of the second gas spring 56 which affects the sliding sash 14th can be closed gently without hitting the frame 12th to bounce.

Should now the sliding sash 14th be opened again, an opening impulse can be manually applied to the sliding sash 14th applied as shown in the first illustration of the 5 is indicated by the arrow pointing to the left. This has the consequence that the angle element 70 around the swivel joint 76 is pivoted clockwise until the second leg 74 of the angle element 70 with the abutment 60 according to the third representation of the 5 arrives in plant. Since in this position the first gas pressure spring 54 compared to the second gas spring 56 is deflected, the biasing force of the compressed second gas spring is available 56 only the force component of the preload force of the first gas pressure spring 54 contrary to that with the second gas spring 56 is aligned. The second gas spring 56 can thus correspond to the transition from the third representation of the 5 for the first presentation of the 6th expand and thereby at the abutment 60 with the result that the sliding sash 14th is opened automatically after the opening impulse.

As was explained above, with the device according to the invention 50 prevent the sliding sash from closing 14th hits the frame 70 . With the same device 50 can also prevent the sliding sash 14th hits the frame on the other side when opening 70 , for which a second abutment would only have to be provided near the open position, on which the two gas pressure springs are located 54 , 56 can alternately support in a corresponding manner.

As can be seen from the above representations, the angle element 70 between its two end positions an unstable equilibrium position, as shown in the middle illustration of the 4th and 5 is shown. Beyond this unstable equilibrium position is either the first gas pressure spring 54 compared to the second gas spring 56 or the second gas spring 56 compared to the first gas spring 54 deflected with the result that the gas pressure spring is not deflected 54 , 56 the sliding sash 14th can push in the direction of its open or closed position, for which purpose the respectively undeflected gas pressure spring 54 , 56 at the abutment 60 and thereby the force component of the respectively deflected gas pressure spring 56 , 54 that with the non-deflected gas spring 54 , 56 is aligned, overcomes. The first gas spring 54 thus pushes in the first limit switch position of the angle element 70 the sliding sash 14th against the pretensioning force of the second gas pressure spring 56 towards its closed position, whereas the second gas pressure spring 56 in the second limit switch position of the angle element 70 the sliding sash 14th of the lift and slide element 10 against the pretensioning force of the first gas pressure spring 54 urges towards its open position.

So that the angle element 70 cannot be pivoted beyond its first or second limit switch position, can on the first leg 72 of the angle element 70 a first stop, which cannot be seen more precisely here, can be formed with which the first gas pressure spring comes into contact in the first end switch position. In a corresponding manner, on the second leg 74 of the angle element 70 a second stop, which cannot be seen in more detail here, can be formed with which the second gas pressure spring 56 comes into contact in the second limit switch position.

Although the angle element 70 of the switching mechanism 58 be transferred into its second limit switch position in the manner described above by a manually induced opening pulse; the device 50 can, however, also have an actuating mechanism with which the switching mechanism 58 and in particular its angle element 70 at least in the closed position of the lift-slide element cooperates in such a way that when the sliding sash is lowered 14th of the lift and slide element 10 the angle element 70 is transferred from its first limit switch position to its second limit switch position. For example, the angle element 70 with the gear of the lift and slide element 10 , by means of which the sliding sash 14th can be raised and lowered, be positively coupled in such a way that when the sliding sash is lowered 14th the angle element 70 is transferred to its second limit switch position.

List of reference symbols

10

Lift and slide door

12th

Frame

14th

Sliding sash

16

Casement

18th

upper leg of 12

20th

lower leg of 12

22nd

upper leg of 16

24

Recess in 22

26th

Recess in 18

50

contraption

52

Base body

54

first biasing element, first gas pressure spring

56

second preload element, second gas pressure spring

58

Switching mechanism

60

Abutment

62

first end of 54

64

second end of 54

66

first end of 56

68

second end of 56

70

Angle element / switching element

72

first leg of 70

74

second leg of 70

76

Swivel joint

Claims (14)

Device (50) for supporting the closing and opening of a lift and slide element (10) such as a lift and slide door (10) or a lift and slide window, comprising: - A base body (52) which is designed for attachment to a sash frame (16) of a lift-slide element (10); - an axially extending first biasing element (54), in particular a first gas pressure spring (54), which has a first end (62) and a second end (64) which is hinged to the base body (52), - An axially extending second biasing element (56), in particular a second gas pressure spring (56), which has a first end (66) and a second end (68) which is hinged to the base body (52); and - A switching mechanism (58) with a first and a second defined limit switch position, via which the first end (62) of the first prestressing element (54) under a prestress of the first and / or the second prestressing element (56) with the first end (66) the second biasing member (56) is coupled; the switching mechanism (58) having an unstable equilibrium position between its two end switch positions, the two preloading elements (54, 54) only being aligned with one another in the unstable equilibrium position. Device according to Claim 1 , characterized in that when the device is mounted on a lift-slide element (10), the first biasing element (54) in the first limit switch position of the switching mechanism (58) moves the lift-slide element (10) against the biasing force of the second biasing element (56) Urges towards its closed position and the second biasing element (56) in the second limit switch position of the switching mechanism (58) urges the lift-slide element against the biasing force of the first biasing element (54) in the direction of its open position. Device according to Claim 1 or 2 , characterized in that the device (50) further comprises an abutment (60) which is designed for attachment to a fixed component, in particular to a ceiling or a frame (12) of the lift-and-slide element (10), the first end (62) of the first biasing element (54) is supported on the abutment (60) to urge the lift-slide element (10) against the biasing force of the second biasing element (56) in the direction of its closed position, and the first end (66) of the second biasing element (56) on the Abutment (60) is supported in order to urge the lift-slide element (10) against the biasing force of the first biasing element (54) in the direction of its open position. Device according to Claim 3 , characterized in that the abutment (60) is designed to be elastically flexible perpendicular to the axial extension of the two prestressing elements (54, 56). Device according to one of the preceding claims, characterized in that the switching mechanism (58) has an L-shaped angled switching element (70) with a first and a second leg (72, 74), which are preferably aligned substantially perpendicular to one another, wherein the the first end (62) of the first prestressing element (54) is hinged to the free end of the first leg (72) and the first end (66) of the second prestressing element (56) is hinged to the free end of the second leg (74). Device according to Claim 5 , characterized in that the first leg (72) forms a first stop with which the first preload element (54) comes into contact in the first limit switch position, and the second leg (74) forms a second stop with which the second preload element ( 56) comes into contact in the second limit switch position. Device according to one of the preceding claims, characterized in that the switchover mechanism (58), in particular its switchover element (70), is slidably mounted on the base body (52) and is secured thereon against lifting forces, in particular by means of a relative to the base body (52) ) displaceable swivel joint (76), on whose axis of rotation the intersection of the two legs of the switching element lies. Device according to one of the preceding claims, characterized in that the two prestressing elements (54, 56) are structurally identical and in particular have the same spring stiffness. Device according to one of the preceding claims, characterized in that the two prestressing elements (54, 56) are prestressed regardless of their position / deflection. Device according to one of the preceding claims, characterized in that in the closed position of the lift-slide element (10) the prestressing force of the first prestressing element (54) with the force component of the prestressing force of the second prestressing element (56) acting in the direction of the first prestressing element (54) Balance is. Device according to one of the preceding claims, characterized in that the device (50) comprises an actuating mechanism with which the switching mechanism (58) interacts in the closed position of the lift-slide element (10) in such a way that when the lift-slide element (10) is lowered the switching mechanism (58) is pivoted from its first limit switch position into its second limit switch position. Lift and slide element (10), in particular lift and slide door (10) or lift and slide window, with a device (50) according to at least one of the preceding claims, the base body (52) of which on the sash frame (16) or on the frame (12) of the lift -Sliding element (10) is attached. Lift and slide element after Claim 12 , characterized in that the sash frame (16) comprises an upper wing limb (22) in which an upwardly open recess (24) is formed in which the base body (52) of the device (50) including the two prestressing elements (54 , 56) and the switching mechanism (58) or the abutment (60) is arranged. Lift and slide element after Claim 13 , characterized in that the abutment (60) or the base body (52) of the device (50) including the two biasing elements (54, 56) and the switching mechanism (58) is arranged in a recess (26) which is open at the bottom is formed in an upper leg (18) of a frame (21) of the lift-slide element (10).

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