Patent Application
20210238882
This patent application claims the benefit of priority to German Patent Application No. 10 2020 201 152.4, filed Jan. 30, 2020, the entire teachings and disclosures of the application are incorporated herein by reference thereto.
The invention relates to a door locking system for opening and closing a door lock in a door according to the preamble of claim 1.
A door locking system usually comprises a first door handle unit with a first door handle and a second door handle unit with a second door handle. In this case, the door handles are arranged on both sides of the door and are connected to each other in a pivotably fixed manner via a polygonal pin. As a result, the door handles can be pivoted together on the door. The polygonal pin is effectively connected here to a door lock so that when one of the door handles is pivoted, the closed door lock can be opened. In addition to the door locking system, a locking system can also be mounted on the door. In this case, the locking system can lock or unlock the door independently of the door locking system. A door with a door locking system and with an additional locking system is known, for example, from EP 2 182 144 A1. Such additional locking systems are usually installed below the door locking system and therefore require additional installation space.
It is therefore an object of the invention to provide an improved or at least alternative embodiment for a door locking system of the generic type with which the described disadvantages are overcome. In particular, the door locking system is to be compactly designed and to permit locking of the door lock.
This object is achieved according to the invention by the subject matter of independent claim 1. Advantageous embodiments are the subject matter of the dependent claims.
A door locking system is provided for opening and closing a door lock in a door. The door locking system comprises a first door handle unit with a first door handle and a second door handle unit with a second door handle. The first door handle and the second door handle are pivotable about a common pivot axis. The door locking system further comprises a coupling device with an axially aligned polygonal pin having a first pin piece and a second pin piece. The first pin piece is connected to the first door handle and the second pin piece is connected to the second door handle in a pivotably fixed manner. According to the invention, the pin pieces of the polygonal pin are separated from each other and only the first pin piece of the polygonal pin can be coupled to the door lock. In an installed state of the door locking system, thus with the door locking system installed in the door with a door lock, the first pin piece of the polygonal pin is coupled to the door lock for opening actuation thereof. The coupling device further comprises an axially aligned coupling pin which is arranged in the polygonal pin and is axially shiftable into a coupling position and into a decoupling position. The pin pieces of the polygonal pin are connected to each other in a pivotably fixed manner in the coupling position of the coupling pin and can be pivoted relative to each other in the decoupling position of the coupling pin.
Once the coupling pin is in the coupling position, the pin pieces and thus also the door handles are connected to each other in a pivotably fixed manner. When pivoting one of the two door handles, the two pin pieces of the polygonal pin and the other door handle are pivoted about the common pivot axis. In doing so, the door lock can be coupled to the first pin piece and can therefore be opened when one of the door handles is pivoted. If the coupling pin is in the decoupling position, the pin pieces and thus also the door handles can be pivoted relative to each other. When pivoting the second door handle, only the second pin piece is pivoted whereas the first pin piece and the first door handle do not pivot. Since the door lock can be coupled or is coupled to the first pin piece, the door lock cannot be opened when the second door handle is pivoted. However, when pivoting the first door handle, the first pin piece of the polygonal pin is always pivoted and thus the door lock that can be coupled thereto is opened.
With the door locking system according to the invention, the door lock can advantageously be opened by the two door handles in the coupling position of the coupling pin and can be opened only by the first door handle in the decoupling position of the coupling pin. This advantageous effect is achieved by the coupling pin which is arranged in the polygonal pin and thus requires no additional installation space. As a result, the door locking system according to the invention is constructed in a more compact manner compared to a conventional door locking system with an additional locking system. Expediently, the first door handle or the first door handle unit is provided for mounting on the interior side and the second door handle or the second door handle unit is provided for mounting on the exterior side.
The door closing system according to the invention can be used for implementing a privacy function. A person who wants privacy in a room—for example in a washroom or in a bathroom—can set the decoupling position. In this case, it is not possible in the decoupling position to open the door to this room with the second door handle on the outside room side. In addition, the door locking system according to the invention provides an emergency opening function since the trapped person can always open the door lock with the first door handle on the interior side. In particular, this can reduce the risk of children locking themselves in.
In an advantageous further development of the door locking system it is provided that the coupling pin projects axially outwardly from the first door handle and can be shifted manually from the outside from the coupling position into the decoupling position. As a result, the coupling pin can be shifted on the interior side into the decoupling position and the pin pieces can thus be pivotably connected to each other or decoupled from each other. Once the coupling pin is shifted into the decoupling position, the door lock can no longer be opened by the second door handle or on the exterior side. The coupling pin remains in the decoupling position until it is shifted into the coupling position.
Advantageously, the coupling device can comprise a resetting unit. When pivoting the first door handle, the resetting unit can shift the coupling pin from the decoupling position into the coupling position. Thus, once the coupling pin is in the decoupling position and the first door handle is pivoted, the coupling pin automatically transitions into the coupling position. Thereby, shifting the coupling pin from the decoupling position into the coupling position can be simplified. Furthermore, unintentional locking of the door can also be prevented, since as soon as a person pivots the first door handle on the interior side when leaving a room, the coupling pin automatically transitions into the coupling position and the door can also be opened on the exterior side. If the coupling pin is in the coupling position and the first door handle is actuated, the coupling pin remains in the coupling position. Shifting the coupling pin from the coupling position into the decoupling position can be done manually—as described above.
In a further development of the resetting unit, it can be provided that the resetting unit comprises a formation and a ramp. In this case, the formation can be formed or arranged on the coupling pin and project radially therefrom. The ramp can be formed on the first pin piece of the polygonal pin such that it is arranged transversely to the pivot axis and faces the first door handle. In the decoupling position of the coupling pin, the formation then rests against the ramp and slides axially along the ramp when the first door handle is pivoted. Since by pivoting the first door handle, the first pin piece is pivoted, the ramp also pivots about the pivot axis and axially displaces the formation from its position. As a result, the coupling pin is also axially displaced from the decoupling position into the coupling position.
Additionally, it can be provided that the resetting unit comprises a coil spring. The coil spring can be arranged around the coupling pin and is then supported axially on one side on the ramp and on the other side on a radially circumferentially extending stop edge of the coupling pin. The coil spring is axially clamped in the decoupling position of the coupling pin and supports the axial displacement of the coupling pin from the decoupling position into the coupling position when the first door handle is pivoted.
In an advantageous further development of the door locking system, it is provided that the coupling pin has a pivot area and a coupling area that is axially adjacent thereto and rotationally asymmetrical. The coupling pin and the first pin piece can then be pivotably connected to one another via the pivot area. The pivot area of the coupling pin can be cylindrical, for example. It is conceivable that for the pivot area of the coupling pin, a mating pivot contour is formed in the first pin piece. In this case, the pivot area of the coupling pin is accommodated within the mating pivot contour of the first pin piece in radially fixed, axially displaceable and pivotable manner. Moreover, a first mating contour is formed in the first pin piece, and a second mating contour is formed in the second pin piece for the coupling area. When the coupling area engages with the respective mating contour, the coupling pin and the respective pin piece can then be connected to each other in a pivotably fixed manner. In other words, the respective mating contour and the coupling area can form a pivotably fixed and positive connection with each other. The mating contours in the two pin pieces can be identical to each other.
Advantageously, in the decoupling position of the coupling pin, the coupling area can be arranged outside the first mating contour of the first pin piece and the pin pieces can therefore be pivoted relative to each other. The pivot area can be arranged in the first pin piece. In the coupling position of the coupling pin, the coupling area can then be arranged in certain section in the first mating contour of the first pin piece and in certain sections in the second mating contour of the second pin piece, and the pin pieces can therefore be connected to one another in a pivotably fixed manner In the coupling position of the coupling pin, the respective mating contours and the coupling area of the coupling pin form a pivotably fixed positive connection which allows the two pin pieces and also the door handles to pivot together about the common pivot axis. The pivot area of the coupling pin can be arranged completely in the first pin piece. By connecting the first mating contour of the first pin piece to the coupling area, the first pin piece nevertheless remains connected to the second pin piece in a pivotably fixed manner.
In an advantageous further embodiment of the door locking system, it is provided that the coupling device comprises a latching unit which axially fixes the coupling pin in the coupling position and in the decoupling position. This can prevent that the coupling pin transitions unintentionally from the decoupling position into the coupling position and vice versa.
Advantageously, the latching unit can comprise a radially resilient ball and two axially adjacent and radially aligned openings. In the coupling position, the ball is latched in the one opening and in the decoupling position it is latched in the other opening. The openings are formed in the coupling pin and the ball is fixed to the second pin piece of the polygonal pin or to the second door handle in a radially resilient manner and penetrates the second pin piece of the polygonal pin. Alternatively, it is also conceivable that the openings are formed in the coupling pin and the ball is fixed to the first pin piece of the polygonal pin or to the first door handle in radially resilient manner and penetrates the first pin piece of the polygonal pin. Alternatively, it is also conceivable that the openings are formed in the first or in the second pin piece and the ball is fixed to the coupling pin in a radially resilient manner.
In an advantageous configuration of the door locking system, it is provided that the door locking system comprises the door lock. In this case, the door lock is coupled to the first pin piece of the polygonal pin. In this case, the door lock can be opened in the decoupled position of the coupling pin exclusively by pivoting the first door handle, and can be opened in the coupled position of the coupling pin by pivoting the first door handle or by pivoting the second door handle.
Other important features and advantages of the invention are apparent from the sub-claims, from the drawings and from the associated description of figures with reference to the drawings.
It is to be understood that the aforementioned features and those to yet be explained below can be applied not only in the combination specified in each case, but also in other combinations or alone without departing from the scope of the present invention.
Preferred exemplary embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description, wherein identical reference signs refer to identical or similar or functionally identical components.
In the figures, in each case schematically:
In
In
As shown in
In
The coupling pin 8 can be manually shifted from the coupling position into the decoupling position. For this purpose, the coupling pin 8 projects axially from the first door handle 4a in the coupling position and can be shifted towards the second door handle 4b into the decoupling position. A resetting unit 17 is provided for shifting the coupling pin 8 from the decoupling position into the coupling position. The resetting unit 17 comprises a radial formation 18 on the coupling pin 8 and a ramp 19 formed transversely to the pivot axis DA on the first pin piece 11a. Once the coupling pin 8 is in the decoupling position and the first door handle 4a is pivoted, the first pin piece 11a also pivots. The ramp 19 is pivoted about the pivot axis DA and displaces the formation 18 and thereby the coupling pin 8 towards the first door handle 4a. In the process of this, a coil spring 20 of the resetting unit 17 supports the axial movement of the coupling pin 8. In the decoupling position, the coil spring 20 is clamped between the ramp 19 and a circumferentially extending stop edge 21 of the coupling pin 8 and the formation 18 rests against the ramp 19, as can be seen in
With the door locking system 1 according to the invention, the door lock 6 can advantageously be opened in the decoupling position of the coupling pin 8 by the two door handles 4a and 4b and can be opened in the decoupling position of the coupling pin 8 exclusively by the first door handle 4a. Compared to conventional door locking systems, the door locking system 1 according to the invention is constructed in a compact and material-saving manner.
All references, including publications, patent applications, and patents cited herein are hereby incorporated by reference to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety herein.
The use of the terms “a” and “an” and “the” and similar referents in the context of describing the invention (especially in the context of the following claims) is to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The terms “comprising,” “having,” “including,” and “containing” are to be construed as open-ended terms (i.e., meaning “including, but not limited to,”) unless otherwise noted. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.
Preferred embodiments of this invention are described herein, including the best mode known to the inventors for carrying out the invention. Variations of those preferred embodiments may become apparent to those of ordinary skill in the art upon reading the foregoing description. The inventors expect skilled artisans to employ such variations as appropriate, and the inventors intend for the invention to be practiced otherwise than as specifically described herein. Accordingly, this invention includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the invention unless otherwise indicated herein or otherwise clearly contradicted by context.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2020 201 152.4 | Jan 2020 | DE | national |
