EP3452681B1 - Sealing device for sliding doors - Google Patents

Description

TECHNICAL AREA

The present invention relates to a sealing device for a sliding door.

STATE OF THE ART

Lowering seals are used to seal doors and windows. They prevent light transmission and offer sound insulation and protection against drafts and smoke. For exterior doors, they also serve as splash protection in the rain and, depending on the design, can also protect against flooding.

Lowerable door and window seals usually consist essentially of a housing in the form of a hat-shaped or U-shaped profile rail which is open at the bottom, a sealing strip held and raised in this housing with a sealing profile and an actuating mechanism for raising and lowering the sealing strip. In proven lowering seals, the actuating mechanism has leaf springs which are attached to the housing at a first point, to the sealing strip at a second point and to a slide at a third point. The slide usually merges into an actuation button which projects on one or both sides of the housing. When the door is closed, the operating button on the door frame is pressed in and the sealing strip is automatically lowered against the spring force of the leaf springs and pressed against the floor in a sealing manner. When the door is opened, the operating button is released again and the sealing strip is raised automatically. Other types of actuation mechanisms are known, for example lever arrangements. Such door seals are made of, for example EP 0 338 974 , DE 299 16 090 U and EP 0 509 961 known. EP 2 085 559 discloses an automatically lowerable sealing device, in which the actuating mechanism is activated by lateral force.

EP 2 476 857 discloses a lowering seal for sliding doors. The lowering seal is designed as described above and has an actuating button protruding from the seal housing. In the area of the secondary closing edge, the door frame has a stop element with an inclined surface that slopes downward and a receiving pocket that runs in a straight line. When the door leaf is closed, a first roller attached to the door leaf runs along this inclined surface and pulls a spring-loaded slide downwards. A second roller arranged on the slide presses a lever on the actuation button, which thereby activates the actuation mechanism and lowers the sealing strip. When the door leaf is closed further, the first roll gets into the receiving pocket and the lowering movement is stopped. The door leaf is completely closed in this state. Thanks to the receiving pocket, the lowering seal remains in the closed position without the need for further blocking devices. Only when the door leaf is opened is the roller guided out of the pocket, which enables the sealing strip to be raised automatically. This arrangement has the disadvantage that a relatively large amount of force is required by the user when the door is closed, because the slide has to be lowered against the spring force and the resistance of the lever pressing the actuating button. Another disadvantage is that when the door is opened, the automatic lifting of the slide leads to the door opening automatically and the user thus not having full control over the opening. Another disadvantage is that the slide is arranged behind the lowering seal in the running direction of the sliding door, so that the sealing strip must be of a shortened design and cannot seal completely in the region of the secondary closing edge. Furthermore, the end position allows little play, so that precise guidance of the door leaf and precise positioning of all elements are imperative.

Lowering seals with an actuating button that can be activated at the front have proven themselves in practice for pivoting door leaves. The power transmission ratio when closing the door leaf is already around 1:30 without further mechanisms, so that the actuation button can be pressed in when the door leaf is closed without any noticeable expenditure of force. The use of such lowering seals for sliding doors is more problematic, since the power transmission to the actuating button is only 1: 1 and thus more force has to be applied in order to also press the actuation button when the door leaf is closed.

PRESENTATION OF THE INVENTION

It is therefore an object of the invention to provide an improved sealing device for sliding doors.

This object is achieved by a sealing device with the features of patent claim 1.

The sealing device for a sliding door with a displaceably mounted door leaf has a lowering seal with a sealing strip and with an actuating mechanism for automatically lowering and raising the sealing strip. The lowering takes place against a restoring force. The sealing device has an activation unit for activating the lowering seal, the activation unit having a first contact surface, a pivotable contact element and a pivotable force transmission element. The contact element contacts the first contact surface when the door leaf is closed and moves along the first contact surface during the closing movement of the door leaf while pivoting the contact element. A pivoting movement of the contact element results in a pivoting movement of the force transmission element, as a result of which the force transmission element actuates the lowering seal.

In this text, terms such as "upwards" and "downwards" designate the directions in which the sealing strip of the lowering seal moves. "Up" is thus the direction in which the sealing strip is raised and inserted into its housing rail, "down" is the direction in which the sealing strip is lowered to seal the door gap, that is to say it is moved out of its housing rail. The “downward” direction preferably denotes the direction of the gravitational force, that is to say toward a building floor. In cases where the gravitational direction is meant, this is noted in the text.

If in the following we speak of contacting through a contact surface, the respective contact can be point-shaped or linear and does not have to be flat.

According to the invention, the second contact surface of the contact element moves, preferably rolls, slidingly along the first contact surface. When it rolls, it thus unwinds along the first contact surface and each point of the first contact surface is contacted with a different point on the second contact surface.

The force to be exerted when the door is closed is thus minimized, the configuration of the two contact surfaces and the position of the first pivot axis being able to be selected in such a way that optimum force transmission for lowering the sealing strip can be achieved.

The first contact surface is preferably directed upwards and the contact element lies on this first contact surface when the door leaf is closed, whereby it slides, preferably rolls, and thereby actuates the lowering seal. In this context, the indication of direction “upward” preferably refers to the direction opposite to the gravitational force.

The first contact surface (taking into account the direction of the gravitational force) has the advantage that the weight of the door leaf presses partially or completely on the contact element. A person who closes the sliding door has to use relatively little or no additional force to lower the sealing strip. Despite the lowering seal, the sliding door can be closed without increased effort.

The contact element is preferably connected or operatively connected to the actuating mechanism. It can also be part of the actuating mechanism itself.

The first contact surface and the contact element are preferably designed in such a way that when the door leaf is closed, an upward force, preferably opposite to the gravitational force, is obtained, which force is deflected such that it the actuating mechanism acts.

The arrangement according to the invention is preferably arranged on the side of the secondary closing edge of the sliding door. However, it can also be arranged on the main closing edge.

Like the actuation mechanism, the activation unit preferably consists exclusively of mechanical means and preferably does not include any magnets and / or electric motors and / or sensors.

Since the first contact surface can be arranged next to the lowering seal in the sliding direction, the sealing strip can extend over the entire length of the door leaf and can therefore seal optimally.

Another advantage is that the activation unit holds the sealing strip in a lowered position without the restoring force influencing a sliding movement of the door leaf in the longitudinal direction of the sealing strip. As a result, no additional locking mechanisms are necessary to keep the door leaf in its closed position.

Furthermore, the restoring force of the lowering seal does not prevent the sliding door from closing completely. Because of their heavy weight, many sliding doors have a braking mechanism which slows down the closing movement of the door leaf shortly before the complete closing position is reached. This prevents fingers or other parts of the body from being pinched too tightly. In preferred embodiments of the invention, this braking mechanism should not be influenced by the restoring force of the lowering seal or by the force required to lower the seal. In addition or alternatively, it should not be necessary to use even more force to close the door. In these embodiments, the lowering seal can therefore be completely lowered before reaching the fully closed position and held in this position without any additional external force. The sealing strip grinds over the floor during the further closing movement, but only over a short distance.

This "zero force position" can be achieved in different ways. There is preferably a position of the contact element on the first contact surface, in which position the sealing strip is completely lowered and in which position the restoring force acting on the sealing strip is deflected in a direction perpendicular to the longitudinal direction of the sealing strip.

The first contact surface preferably runs at least partially in the longitudinal direction of the lowering seal in an oblique direction, preferably running from bottom to top in the closing direction of the door leaf. The slope can be constant or changing. The gradient can be used to set the force which has to be used to lower the sealing strip. Force ratios can thus be selected in order to optimize the force to be applied.

The first contact surface preferably has a horizontally running section on which the contact element rests in order to hold the sealing strip in the lowered position. The horizontal section preferably adjoins the sloping section. The door leaf can be closed completely by first moving the contact element up the inclined surface and thereby lowering the sealing strip and then moving along with the lowered sealing strip along the horizontal surface until the door leaf contacts the door frame laterally.

In preferred embodiments, the contact element actuates the actuating mechanism in order to lower the sealing strip. It can do this directly or indirectly, for example by means of a force transmission element.

The contact element is preferably firmly connected to the lowering seal and the first contact surface is formed in a module separate from the lowering seal for arrangement in a stationary part of the sliding door.

The second contact surface is preferably curved over its entire length. In alternative embodiments, it has one or more flat intermediate areas. Preferably, only the second contact surface is curved and the first contact surface has a flat surface that is oblique and / or is horizontal. The power transmission can be set by selecting the slope of the first contact surface.

The first or second contact surface preferably has a length over which the contact element contacts or rolls, the curvature of the first or second contact surface having a radius of curvature which changes over this length. The curved surface preferably forms an involute.

The contact element is preferably pivotable about a first axis and the force transmission element about a second axis. The axes are preferably not identical. The first axis is preferably arranged perpendicular to the longitudinal direction of the lowering seal and perpendicular to the lowering direction of the sealing strip, and the second axis runs parallel to the first axis.

The first axis is preferably arranged eccentrically with respect to the second contact surface in the contact element, the contact element having a base body and a contacting arm arranged thereon and a free end of the contacting arm making first contact with the first contact surface when the sliding door is closed. This optimizes the leverage effect and thus minimizes the effort.

The force transmission element is preferably operatively connected to the contact element, the force transmission element actuating an actuation button of the actuation mechanism via a third contact surface when the door leaf is closed.

Preferably, the force transmission element is pivotable about the second axis when the door leaf is closed. The second axis is preferably arranged eccentrically with respect to the third contact surface. The third contact surface is preferably curved and preferably forms an involute.

Depending on the embodiment, the force transmission element and the contact element are operatively connected to one another differently. For example, they can be connected to one another via swivel axes and / or levers. However, the contact element and the force transmission element are preferably in meshing engagement with each other, in particular they are partially designed as gear wheels. This is a simple, space-saving and inexpensive way of power transmission. The base bodies of the contact element and of the force transmission element are preferably designed as gear wheels over at least part of their circumference.

The first axis is preferably arranged perpendicular to the longitudinal direction of the lowering seal and perpendicular to the lowering direction of the sealing strip. The second axis preferably runs parallel to the first axis.

In preferred embodiments, the force transmission element has a base body and a force transmission arm offset laterally to the base body, the force transmission arm activating the actuating mechanism. The transmission arm preferably has the curved third contact surface for contacting the lowering mechanism, in particular the actuating button mentioned below.

In preferred embodiments, the actuation mechanism of the lowering seal has an actuation button which activates the actuation mechanism by external force. The contact element preferably acts directly or indirectly on this actuating button and thereby lowers the sealing strip. The force transmission element, more precisely its force transmission arm and more precisely the third contact surface, preferably acts directly on this actuation button. Since many known lowering seals have such an actuating button, the activation unit according to the invention can be used with these known lowering seals without the latter having to be changed significantly.

In preferred embodiments, the lowering seal has a housing in which the sealing strip can be raised and lowered. The actuating button can protrude from the front of this housing. In other embodiments, it is flush with the end face of the housing or it is arranged set back. The reset arrangement is the most preferred. It is preferably displaceable relative to the housing in the longitudinal direction of the sealing strip.

The force transmission element preferably acts on the end face of this actuation button a, usually by pressing it in directly or indirectly when the door is closed and then releasing it when the door is opened.

The activation unit according to the invention can also be used with other types of lowering mechanisms, the contact element acting directly or indirectly on a suitable location of the lowering seal.

In further embodiments, the sealing device for a sliding door with a displaceably mounted door leaf has a lowering seal with a sealing strip and with an actuating mechanism for automatic lowering and raising of the sealing strip, the lowering taking place against a restoring force. The sealing device has an activation unit for activating the lowering seal, the activating unit having a contact element which contacts a first contact surface of the activating unit when the door leaf is closed and thereby actuates the lowering seal. The activation unit has a force transmission element. The contact element is designed to be pivotable about a first axis and the force transmission element is designed to be pivotable about a second axis. The contact element and the force transmission element are in meshing engagement with one another, so that when the door leaf closes, a pivoting movement of the contact element about the first axis results in a pivoting movement of the force transmission element about the second axis. The power transmission element actuates the lowering seal when the door leaf is closed by its pivoting movement.

Since the contact element and the force transmission element mesh like gears, a space-saving and inexpensive design of the activation unit is possible, the advantages of contacting a first contact surface still being present, in particular if it is oriented upwards and in particular if it is an inclined and has a horizontal portion. Preferably, the contact element with a second contact surface slides, and more preferably rolls, when the door leaf is closed, along the first contact surface.

In further embodiments, the sealing device for a sliding door with a displaceably mounted door leaf has a lowering seal with a sealing strip and an actuating mechanism for automatically lowering and raising the sealing strip. The lowering takes place against a restoring force.

The sealing device has an activation unit for activating the lowering seal, the activating unit having a contact element which contacts a first contact surface of the activating unit when the door leaf is closed and thereby actuates the lowering seal. The activation unit has a pivotable force transmission element which is operatively connected to the contact element. The force transmission element has a curved contact surface which, when the door leaf is closed, actuates an actuation button of the actuation mechanism in order to lower the sealing strip.

The curved design of the contact surface enables optimal power transmission to the actuation button, in particular if it forms an involute and in particular if the pivot axis of the power transmission element is arranged eccentrically to this contact surface.

In further embodiments, the sealing device for a sliding door with a displaceably mounted door leaf has a lowering seal with a sealing strip and with an actuating mechanism for automatically lowering and raising the sealing strip. The lowering takes place against a restoring force.

The sealing device has an activation unit for activating the lowering seal, the activation unit having a contact element which, when the door leaf closes, has a first contact surface of the activation unit contacted and thereby actuated the lowering seal. The contact element is designed to be pivotable about a first axis and has a second contact surface which moves along the first contact surface during the closing movement of the door leaf. Either the second contact surface and / or the first contact surface is curved. The second contact surface preferably rolls along the first contact surface during the closing movement. The first contact surface is preferably designed as an inclined surface over at least one region. During the closing movement, the contact element is preferably pivoted about the first axis, as a result of which the force for lowering the sealing strip is transmitted, preferably to the lowering mechanism of the sealing strip.

Further embodiments are specified in the dependent claims.

An advantage of many of these embodiments, in particular if a power transmission by means of a gear connection is selected, is that, apart from the first contact surface, all elements for triggering and actuating the seal can be arranged within the seal housing (housing rail with additional wall) without the seal housing being made higher must than with classic lowering seals.

BRIEF DESCRIPTION OF THE DRAWINGS

Figur 1

eine Ansicht einer erfindungsgemässen Dichtungsvorrichtung von vorne mit angehobener Dichtleiste gemäss einer ersten Ausführungsform;

Figur 2

einen Teillängsschnitt durch die Dichtungsvorrichtung gemäss Figur 1 mit abgesenkter Dichtleiste von einer ersten Seite;

Figur 3

einen Teillängsschnitt durch die Dichtungsvorrichtung gemäss Figur 1 mit abgesenkter Dichtleiste von einer zweiten Seite;

Figur 4

eine perspektivische Darstellung eines Teils der Dichtungsvorrichtung gemäss Figur 2;

Figur 5

eine perspektivische Darstellung eines Teils der Dichtungsvorrichtung gemäss Figur 3;

Figur 6

eine Ansicht einer erfindungsgemässen Dichtungsvorrichtung von vorne mit abgesenkter Dichtleiste gemäss einer zweiten Ausführungsform;

Figur 7

einen Teillängsschnitt durch die Dichtungsvorrichtung gemäss Figur 6 mit angehobener Dichtleiste von einer ersten Seite;

Figur 8

einen Teillängsschnitt durch die Dichtungsvorrichtung gemäss Figur 6 mit angehobener Dichtleiste von einer zweiten Seite;

Figur 9

eine perspektivische Darstellung eines Teils der Dichtungsvorrichtung gemäss Figur 7;

Figur 10

eine perspektivische Darstellung eines Teils der Dichtungsvorrichtung gemäss Figur 8;

Figur 11

einen Teillängsschnitt durch die Dichtungsvorrichtung gemäss Figur 6 mit abgesenkter Dichtleiste von einer ersten Seite;

Figur 12

einen Teillängsschnitt durch die Dichtungsvorrichtung gemäss Figur 6 mit abgesenkter Dichtleiste von einer zweiten Seite;

Figur 13

eine perspektivische Darstellung eines Teils der Dichtungsvorrichtung gemäss Figur 11;

Figur 14

eine perspektivische Darstellung eines Teils der Dichtungsvorrichtung gemäss Figur 12;

Figur 15

eine perspektivische Darstellung eines erfindungsgemässen Kontaktmoduls gemäss einer ersten Ausführungsform und

Figur 16

eine perspektivische Darstellung eines erfindungsgemässen Kontaktmoduls gemäss einer zweiten Ausführungsform.

Preferred embodiments of the invention are described below with reference to the drawings, which serve only for explanation and are not to be interpreted restrictively. The drawings show:

Figure 1

a view of a sealing device according to the invention from the front with raised sealing strip according to a first embodiment;

Figure 2

a partial longitudinal section through the sealing device according to Figure 1 with lowered sealing strip from a first side;

Figure 3

a partial longitudinal section through the sealing device according to Figure 1 With lowered sealing strip from a second side;

Figure 4

a perspective view of part of the sealing device according to Figure 2 ;

Figure 5

a perspective view of part of the sealing device according to Figure 3 ;

Figure 6

a view of a sealing device according to the invention from the front with lowered sealing strip according to a second embodiment;

Figure 7

a partial longitudinal section through the sealing device according to Figure 6 with raised sealing strip from a first side;

Figure 8

a partial longitudinal section through the sealing device according to Figure 6 with raised sealing strip from a second side;

Figure 9

a perspective view of part of the sealing device according to Figure 7 ;

Figure 10

a perspective view of part of the sealing device according to Figure 8 ;

Figure 11

a partial longitudinal section through the sealing device according to Figure 6 with lowered sealing strip from a first side;

Figure 12

a partial longitudinal section through the sealing device according to Figure 6 with lowered sealing strip from a second side;

Figure 13

a perspective view of part of the sealing device according to Figure 11 ;

Figure 14

a perspective view of part of the sealing device according to Figure 12 ;

Figure 15

a perspective view of an inventive contact module according to a first embodiment and

Figure 16

a perspective view of an inventive contact module according to a second embodiment.

DESCRIPTION OF PREFERRED EMBODIMENTS

In the Figures 1 to 5 A first embodiment of a sealing device according to the invention is shown. In the Figures 4 and 5 some elements, such as the housing rail 10 and the additional wall 100 for better readability of the figures are not shown.

The sealing device has a lowering seal 1 of a known type, as described for example at the beginning. The lowering seal 1 has a housing rail 10, which is fastened in a lower groove of a sliding sliding door leaf by means of known means, here by means of a mounting bracket 13 inserted into a groove of the housing rail 10 at the end. Other types of fastening, for example using side clips, are also possible.

In contrast to the prior art, the housing rail 10 is not only hat-shaped or U-shaped, with the formation of a first chamber open at the bottom. It preferably has a second chamber which is delimited by an outer additional wall 100. A sealing strip can be lowered and raised in the first chamber. For this purpose, a mechanical actuation mechanism of a known type, also arranged in the first chamber, is present. It is often called the lowering mechanism. It is not shown here, but is known from the prior art. It preferably has one or more leaf springs, each of the leaf springs being fastened to the housing 10, to the sealing strip and to a slide 15. The slider 15 is connected to an actuation button 14, which on at least one side, preferably only on one side, the housing rail 10 is arranged. It can protrude from the housing rail 10, be aligned with its end face or be arranged set back. If the actuating button is arranged inside the housing 10, it can be moved by pushing or pulling. However, it can also be contacted and moved, for example, through a side or top window in the housing rail 10. Trigger mechanisms which are alternative to the actuating button can also be used in the sealing device according to the invention. The inventive teaching can also be implemented without such a second chamber and without an additional wall 100.

The sealing strip preferably has a carrier rail 12 and an elastomeric sealing profile 11 fastened thereon. The housing rail 10 and the carrier rail 12 are preferably made of aluminum or another suitable metal. The sealing profile 11 is preferably made of rubber or silicone.

In the lowered state of the sealing strip, the sealing profile 11 seals a gap between the underside of the door leaf and a floor.

The sealing device according to the invention further comprises an activation unit for activating the actuating mechanism of the lowering seal. The activation unit preferably acts on the actuation button 14 of the lowering seal, preferably by pushing it in. Depending on the activation unit and actuation mechanism, it can also move the button or pull it out to lower the sealing strip.

As in Figure 2 can be seen, the activation unit has a contact module 2, which is designed here as a support module. This contact module 2 is arranged next to the lowering seal 1. It is fixed in place, preferably on floor B or on a building wall or on the door frame. The through holes available for this are provided with the reference number 24. It can also be attached in another way, for example by latching into an upwardly open C-rail.

The contact module 2 is located next to the lowering seal 1, wherein it is received when the door leaf is moved into the second chamber, formed by the additional wall 100 of the housing rail 10.

In this example, the contact module 2 is designed as an angle element, it being fastened to the floor or door frame with one leg and the second leg protruding upward. The contact module 2 has an upwardly directed first contact surface. The first contact surface is designed here as a contact surface. In this example, it has an inclined surface 21 and an adjacent horizontal surface 22. The contact module 2 also has an upwardly projecting guide lug 23 which is inserted into the second space between the additional wall 100 and the housing rail 10 when the door leaf is closed.

The contact module 2 is preferably made of plastic, metal or a coated metal or wood.

The activation unit further comprises a power transmission module which is arranged with the lowering seal on the sliding door leaf. It comprises a contact element 3 and a force transmission element 4, both of which are pivotable about an axis 30, 40 each. The axes 30, 40 are held in the housing 10, 100 of the lowering seal. In the area of this power transmission module, the housing rail preferably has a passage window into the second chamber.

The first axis 30 of the contact element 3 and the second axis 40 of the force transmission element 4 are preferably arranged perpendicular to the longitudinal direction of the lowering seal and preferably perpendicular to the lowering direction of the sealing strip. They run parallel and offset from one another. The first and / or the second axis 30, 40 are arranged eccentrically in relation to their contact surfaces 320, 420 in the corresponding element 3, 4.

The contact element 3 has a base body 31 and a contacting arm 32 arranged thereon and extending the contact element 3. The contact arm 32 preferably extends in the same plane as the base body 31.

The contact element 3 is preferably in one piece and preferably made of plastic or metal.

An outer jacket section of the contacting arm 32 forms, together with an outer jacket section of the base body 31, a second contact surface 320 which is continuous and preferably forms an involute. The second contact surface 320 preferably has a radius of curvature that changes over its length. Depending on the embodiment, flat areas are also possible, a curvature existing over the entire length of the second contact surface 320 being preferred.

The base body 31 has a few teeth 310 of a gearwheel. These engage in teeth 410 of the force transmission element 4. These latter teeth 410 are molded onto a base body 41 of the force transmission element 4. The force transmission element 4 is also preferably made in one piece and preferably made of plastic or metal. It has a force transmission arm 42, which forms an extension of the base body 41, but is arranged offset thereto in the direction of the second axis 40. This force transmission arm 42 has a third contact surface 420, which is directed towards the actuation button 14 and contacts the latter when the door leaf is closed. This third contact surface 420 can be flat. However, it is preferably also curved.

As in the Figures 2 and 4th Is clearly recognizable, the teeth 310, 410 of the contacting element 3 and the force transmission element 4 are oriented such that the teeth 410 of the force transmission element 4 are oriented in the closing direction of the door leaf and the teeth 310 of the contacting element 3 are oriented opposite thereto. The closing direction of the door leaf is indicated by an arrow in the figures.

Based on Figures 2 to 4 the functioning of this sealing arrangement is clearly visible. When the door leaf is closed, it slides over the fixed contact module 2, which is arranged at the secondary closing edge. The guide lug 23 serves as a guide for the sliding door leaf. Shortly before the door leaf closes, the power transmission module 3, 4 reaches the contact module 2. The contact element 3 lies with its contact arm 32 and more precisely with its second contact surface 320 on the first contact surface, ie first on the inclined surface 21 and then on the horizontal surface 22. It lies on this first contact surface, whereby the Contact element 3 slidably moves on the contact module 2 when the door leaf is closed, whereby it rotates about the first axis 20 due to the movement along the inclined surface 21.

By pivoting the contact element 3 about the first axis 30, the force transmission element 4 is rotated thanks to the toothing. The force transmission arm 42 is pressed against the actuation button 14 and presses it into the seal. This is the activation of the gasket actuation mechanism. The leaf springs are tensioned and the sealing strip is lowered.

The contact element 3 slides on the horizontal surface 22, preferably without further pivoting movement, so that no further force transmission takes place to the lowering mechanism.

The lowering thus takes place during the movement on the inclined surface 21. When the horizontal surface 22 is reached, the door leaf can still be moved depending on the design, but the seal is already lowered.

The contact element 3 rests with the contact arm 32 on the horizontal surface 22. Because the force vector is at a 90 ° angle, it is prevented that the restoring force of the operating button 14 can push open the door leaf again.

Thanks to the eccentric arrangement of the first and / or second axis and the shape of the second contact surface 320 of the contact element 3, it is achieved that when the door leaf is closed, the button 14 is first displaced by a small path and, when it is closed further, the path by which the button is moved 14 compared to the closing path of the sliding door leaf, is larger.

The power transmission module 3, 4 is arranged at least partially on the front side in front of the lowering seal. So that the usual settings on the lowering seal can be made, such as setting the stroke, the force transmission element 3 has a through opening 43. This is in the Figures 5 and 8th good to see.

In addition, a stop 5 is present in the area of the contacting element 3, here in the form of a pin. The contacting element 3 can be pivoted into a position until it abuts this stop. This is in Figure 8 good to see. In this position, the through opening 43 of the force transmission element 4 is aligned horizontally and forms a passage to a thread 140 of the actuating button 14. With an appropriate tool, for example an Allen key, the through opening 43 can now be penetrated and the basic position of the actuating button 14 in the longitudinal direction can be adjusted adjust in a known manner by appropriate rotation, the elements of the power transmission module being held in position almost without play thanks to the stop 5.

A further setting can be achieved by changing the height of the contact module 2 and / or the slope of the inclined surface 21. This can be achieved, for example, by offering a set of differently shaped contact modules 2 with a lowering seal. Such a set consisting of two elements 2 is in the Figures 15 and 16 shown.

These sets can also be used with the second exemplary embodiment described below, which is shown in FIGS Figures 6 to 14 is shown.

The individual elements correspond to the elements of the first exemplary embodiment and are therefore no longer explained in detail. The same parts are provided with the same reference numerals. However, the arrangement of the contact element 3 or its teeth 310 and the force transmission element 4 or its teeth 410 are different. In this example, the teeth 310 of the contact element 3 are in front of those of the force transmission element 4 in the closing direction of the sliding door leaf and end in the closing direction. The contact element 3 is thus located behind the force transmission element 4 in the closing direction. The gearwheel of this arrangement is thus better protected to the outside, since it is covered by the force transmission element 3, in particular by the contact arm 32. As in the Figures 9 and 10 is clearly visible, the stop 5 is again present, but arranged at another suitable location.

The Figures 7 to 9 show the situation with the door wing still partially open and the sealing strip not yet lowered, the Figures 11 to 14 the situation with the door leaf closed and the sealing strip lowered. In Figure 6 the power transmission module 3, 4 is pivoted such that the through opening 43 is brought into the horizontal setting position.

In the Figures 13 and 14 a guide sleeve 16 is also clearly visible, which surrounds the actuating button 14 over at least part of its length and which is fixed to the housing rail 10. This guide rail 16 ensures that the actuating button 14 is only displaced in the longitudinal direction of the lowering seal despite the vertical force components acting on it from the pivoted force transmission arm. This guide sleeve 16 can also be used in the first exemplary embodiment and in further examples not described in detail here.

The device according to the invention enables a relatively simply constructed, robust and nevertheless extremely effective sealing device for sliding doors, the effort to lower the seal being minimized and the sliding door also being held in its closed position in the unlocked position. <b> List of reference symbols </b> 1 Lowering seal 3rd Contact element 10th Housing rail 30th first axis 100 Additional wall 31 Basic body 11 Sealing profile 310 tooth 12th Carrier rail 32 Low contacting 13 mounting brackets 320 second contact area 14 Control button 140 thread 4th Power transmission element 15 Slider 40 second axis 16 Guide sleeve 41 Basic body 410 tooth 2nd Contact module 42 Power transmission arm 21 Sloping surface 420 third contact area 22 Horizontal surface 43 Through opening 23 Leader 24th Through hole 5 attack

Claims (15)

1. A sealing device for a sliding door having a displaceably mounted door leaf, wherein the sealing device has a drop-down seal having a sealing strip (11, 12) and having an activation mechanism for automatically lowering and lifting the sealing strip (11, 12), wherein the lowering is performed counter to a restoring force, and wherein the sealing device has an activation unit (2, 3, 4) for activating the drop-down seal,
   characterized
   in that the activation unit has a first contact face (21, 22), a pivotably configured contact element (3), and a pivotably configured force transmission element (4) operatively connected to it,
   in that the contact element (3) in the closing of the door leaf contacts the first contact face (21, 22) and in the closing movement of the door leaf moves along the first contact face (21, 22) while pivoting the contact element (3), and
   in that a pivoting movement of the contact element (3) results in a pivoting movement of the force transmission element (4), on account of which the force transmission element (4) activates the drop-down seal.
2. The sealing device as claimed in claim 1, wherein the contact element (3) is pivotable about a first axis (30) and the force transmission element (4) is pivotable about a second axis (40).
3. The sealing device as claimed in claim 2, wherein the first axis (30) is disposed so as to be perpendicular to the longitudinal direction of the drop-down seal and perpendicular to the lowering direction of the sealing strip (11, 12), and wherein the second axis (40) runs so as to be parallel with the first axis (30).
4. The sealing device as claimed in one of claims 1 to 3, wherein the contact element (3) has a second contact face (320) which in the closing movement of the door leaf moves along the first contact face (21, 22) while pivoting the contact element (3), and wherein either the second contact face (320) and/or the first contact face (21, 22) are/is configured so as to be curved.
5. The sealing device as claimed in one of claims 1 to 4, wherein the first contact face (21, 22) is directed upward and the contact element (3) in the closing of the door leaf bears on said first contact face (21, 22) and moves along the latter and on account thereof activates the drop-down seal.
6. The sealing device as claimed in one of claims 1 to 5, wherein the first contact face in the direction of the closing movement has a first region which is configured as an oblique face (21).
7. The sealing device as claimed in claim 6, wherein the first contact face has a horizontally running region that follows the oblique face (21).
8. The sealing device as claimed in one of claims 1 to 7, wherein the force transmission element (4) activates the activation mechanism in order for the sealing strip (11, 12) to be lowered.
9. The sealing device as claimed in one of claims 1 to 8, wherein contact element (3) and the force transmission element (4) mesh with one another.
10. The sealing device as claimed in one of claims 1 to 9, wherein the force transmission element (4) in the closing of the door leaf activates an activation button (14) of the activation mechanism.
11. The sealing device as claimed in one of claims 1 to 10, wherein the force transmission element (4) has a main body (41) and a force transmission arm (42) that is laterally offset in relation to the main body (41), wherein the force transmission arm (42) activates the activation mechanism.
12. The sealing device as claimed in claim 11, wherein the force transmission arm (42) has a curved third contact face.
13. The sealing device as claimed in one of claims 1 to 12, wherein contact element (3) has a main body (31) and a contacting arm (32) disposed thereon, and wherein a free end of the contacting arm (32) in the closing of the sliding door first contacts the first contact face (21, 22).
14. The sealing device as claimed in claims 11 to 13, wherein the main bodies (31, 41) of the contact element (3) and of the force transmission element (4) at least across part of the circumference thereof are configured as gearwheels.
15. The sealing device as claimed in one of claims 1 to 14, wherein the contact element (3) is fixedly connected to the drop-down seal, and the first contact face (21, 22) is configured in a module which is separate from the drop-down seal and which is intended for disposal in a locationally fixed part of the sliding door.

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