DOOR CLOSING SYSTEM

Description

[0001] The invention relates to a door closing system for opening and closing a door according to the preamble of claim 1.

[0002] A door locking system typically comprises a first door handle unit with a first door handle and a second door handle unit with a second door handle. The door locking system also usually includes two mounting plates that are screwed together through the door. The door handles are firmly connected to each other by means of a multi-sided spindle and are pivotally mounted on the mounting plates. Furthermore, the door locking system includes two cover caps that cover the mounting plates on the outside and are firmly attached to them. A disadvantage of a conventional door locking system is that the cover caps can be easily removed from the mounting plate. This allows access to the interior of the door locking system, potentially damaging the system and / or allowing the cover cap to be removed and / or damaging / scratching the door handle with the removed cover cap.The problem described can be particularly relevant in a publicly accessible building – such as a school.

[0003] EP 2 840 203 A1 discloses a door locking system and a door handle unit comprising a door handle and a cover cap. The cover cap is two-part, consisting of a part attached to the door handle and a removable trim ring.

[0004] DE 10 2019 200 115 A1 discloses a door closing system comprising a door handle unit with a door handle and a cover cap. The cover cap is connected to a mounting plate via an externally accessible unit in a rotationally fixed manner, so that when the unit is actuated, the cover cap can be rotated on the door handle.

[0005] DE 10 2013 205 061 A1 discloses a door closing system comprising a door handle unit, a door handle, and a cover cap. The cover cap can be freely rotated on the door handle.

[0006] KR 2004 0059933 A discloses a door locking system and a door handle unit comprising a door handle and a cover cap. The door handle is connected to the cover cap and a mounting plate via two sleeves that can be screwed together. The door handle and the sleeve can be axially detached together and separately from the cover cap.

[0007] EP 2 182 144 A1 discloses a door locking system and a door handle unit comprising a door handle and a cover cap. The cover cap is rotatably connected to the door handle via a handle mounting plate. This allows the cover cap to be freely rotated on the door handle.

[0008] DE 10 2018 201 186 A1 discloses a door locking system and a door handle unit comprising a door handle and a cover cap. The cover cap is two-part and includes a part attached to the door handle and a trim ring.

[0009] The object of the invention is therefore to provide an improved or at least alternative embodiment for a door closing system of the generic type, in which the described disadvantages are overcome.

[0010] This problem is solved according to the invention by the subject matter of independent claim 1. Advantageous embodiments are the subject matter of the dependent claims.

[0011] A door locking system is designed for opening and closing a door. The door locking system comprises a first door handle unit with a first door handle pivotable about a pivot axis and a cover cap oriented transversely to the pivot axis. The door locking system also comprises a second door handle unit, either identical to or different from the first, with a second door handle. Furthermore, the door locking system comprises a first mounting plate and a second mounting plate, both oriented transversely to the pivot axis. The first and second mounting plates are axially and rotationally fixed to each other. The first door handle unit is axially fixed to the first mounting plate, and the second door handle unit is axially fixed to the second mounting plate. The cover cap is axially fixed to the first mounting plate and axially and rotatably connected to the first door handle.The cover cap can only be removed axially from the first mounting plate together with the entire first door handle unit.

[0012] According to the invention, the cover cap has a thread circumferential to the pivot axis, and the first mounting plate has a mating thread circumferential to the pivot axis. The cover cap and the first mounting plate are then screwed together. This screw connection can only be established and removed if the axially fixed arrangement of the first door handle unit on the first mounting plate—for example, by an axially fixed connection of the door handles to the polygonal spindle—is not established. Afterward, the cover cap can no longer be unscrewed from the first mounting plate. The screw connection additionally stabilizes the axially fixed connection between the first door handle unit and the first mounting plate.

[0013] According to the invention, the cover cap is a single piece and cup-shaped. The cover cap covers the mounting plate on one side facing the first door handle and oriented transversely to the pivot axis, and on the other side extending outwards around the pivot axis. Compared to conventional multi-part cover caps, the one-piece cover cap leaves no gaps through which access to the interior of the door locking system could be gained. Furthermore, this improves the external performance of the door locking system.

[0014] In the context of the present invention, the terms "axial" and "radial" always refer to the pivot axis of the first door handle and / or the second door handle.

[0015] The cover cap can be directly and axially fixed to the first mounting plate. In other words, there can be direct contact between the cover cap and the first mounting plate, or the cover cap and the first mounting plate can engage axially without any further elements. The cover cap can be screwed to the first mounting plate. The cover cap can be directly or indirectly connected to the first door handle. For example, the cover cap can be rotatably and axially fixed to the first door handle via a support ring. The support ring can be arranged radially and / or axially between the first door handle and the cover cap, rotatably and axially fixedly supporting the cover cap. Therefore, the cover cap can be axially fixed and rotatably connected to the first door handle independently of its axial fixation to the mounting plate.In other words, the cover cap remains axially fixed and rotatable with the first door handle, even if the cover cap is axially detached from the mounting plate. It is understood that the axially fixed connection is always a detachable axially fixed connection. This is because the door locking system is composed of individual, separate elements that can be detached from one another during disassembly. The crucial point, however, is whether the elements can be individually detached from other still-mounted elements during disassembly.

[0016] In the door locking system according to the invention, the cover cap cannot be detached from the mounting plate as long as an axially fixed arrangement between the first mounting plate and the entire door locking unit is not enabled for release. This prevents simplified access to the interior of the door locking system from the outside and avoids damage to the door locking system. Furthermore, the cover cap cannot be easily removed, and / or the door handle cannot be damaged or scratched by the detached cover cap.

[0017] The door closing system according to the invention is designed and intended for installation on a door. When the door closing system is mounted on a door, the two mounting plates are aligned transversely to the pivot axis and coaxially to each other, and are positioned against the door on both sides. The mounting plates can be screwed together through the door by means of two mounting screws. Two through-holes can be provided in one mounting plate and two screw holes in the other mounting plate for the mounting screws. The mounting screws can then pass through the through-holes to the other mounting plate and be screwed to the other mounting plate via the screw holes. For this purpose, the mounting screws can have a thread and the screw holes a complementary mating thread. The mounting screws can be inserted into the door or...in a lock inside the door, the mounting plates must be arranged in a way that prevents radial and axial displacement and rotation, and thus also prevents radial and axial displacement and rotation on the door.

[0018] Advantageously, the door locking system can be designed with a polygonal spindle aligned parallel to the pivot axis. The first and second door handles are each axially and rotationally fixed to the polygonal spindle. This can be achieved by connecting each handle to the spindle via a radially oriented setscrew. The polygonal spindle effectively connects the two handles, allowing them to pivot together around the pivot axis. This enables the door locking system, or a lock effectively connected to the door locking system via the polygonal spindle, to be operated by either of the two handles.

[0019] If the two door handles are axially fixed to the polygonal spindle, the spindle fixes the two door handles at a predefined axial distance from each other. Accordingly, the polygonal spindle axially fixes the first door handle relative to the first mounting plate and the second door handle relative to the second mounting plate. This achieves the axially fixed arrangement of the first door handle unit on the first mounting plate and the second door handle unit on the second mounting plate, as described above.

[0020] Advantageously, the cover cap cannot be axially detached from the first mounting plate after the polystyrene spindle has been axially fixed to the first and second door handles. As explained above, the polystyrene spindle axially secures the first door handle relative to the first mounting plate. Since the cover cap is axially fixed to the first door handle, it is also axially fixed relative to the first mounting plate. The described axially fixed arrangement of the first door handle unit on the first mounting plate can be created and removed independently of the cover cap. Therefore, once the connection between the door handle and the polystyrene spindle is established, the cover cap, which is axially fixed to the first door handle, cannot be detached from the first mounting plate.

[0021] Advantageously, the first door handle assembly can have a support ring, which is arranged radially and / or axially between the cover cap and the first door handle and rotatably supports the cover cap. This prevents direct contact between the cover cap and the first door handle, thus preventing unwanted damage or scratches to the first door handle during transport and installation. If the first door handle and the cover cap are made of metal, the support ring advantageously prevents metal-on-metal contact. Furthermore, the support ring forms a sliding bearing between the first door handle and the cover cap, allowing the first door handle to rotate easily relative to the cover cap.

[0022] In an advantageous further development of the door locking system, the first door handle unit may include a handle support plate. This support plate is arranged axially between the mounting plate and the cover cap. Furthermore, the support plate is axially fixed and rotatable with the first door handle and rotationally fixed to the mounting plate. The support plate effectively connects the first door handle unit to the first mounting plate already installed on the door. The support plate allows the cover cap to be rotatably mounted and the first door handle to pivot on the first mounting plate. If the axially fixed arrangement of the first door handle unit on the first mounting plate is achieved—for example, by an axially fixed connection of the door handles to the spindle—then the support plate, and consequently also the cover cap and the first door handle, are additionally axially fixed to the first mounting plate.

[0023] Additionally, the handle support plate can be connected to the first mounting plate via a positive-locking, interlocking unit with at least one axially aligned pin and at least one opening complementary to the pin. The opening can be located in the handle support plate and the pin in the first mounting plate, or vice versa. The pin preferably engages axially in the opening, so that the handle support plate and the first mounting plate are connected to each other via the positive-locking unit in a rotationally fixed, yet axially detachable, manner.

[0024] In one possible embodiment of the door locking system, the first door handle unit may include a pivoting unit. This pivoting unit connects the first door handle to the handle mounting plate in a pivoting manner. In other words, the pivoting unit secures the first door handle pivotably within the first door handle unit. Advantageously, the pivoting unit can be arranged on the handle mounting plate described above and pivot the first door handle to the mounting plate. The pivoting unit may include a return spring. The first door handle can then be manually pivoted from a closed position to an open position against the spring force of the return spring, and automatically pivoted from the open position to the closed position by means of the return spring.

[0025] The first door handle unit was described in detail in the preceding section. As explained above, the second door handle unit in the door locking system can be identical or different in design to the first. However, in identically constructed door handle units, the door locking units are mirror images of each other with respect to the door surface.

[0026] Further important features and advantages of the invention will become apparent from the dependent claims, the drawings and the associated description of the figures based on the drawings.

[0027] It is understood that the features mentioned above and those to be explained below can be used not only in the combination specified, but also in other combinations without leaving the scope of the invention defined by the claims.

[0028] Preferred embodiments of the invention are shown in the drawings and are explained in more detail in the following description, wherein identical reference numerals refer to identical or similar or functionally identical components.

[0029] They show, schematically, each one Fig. 1 a partial exploded view of a door closing system according to the invention; Fig. 2 a view of an assembled door closing system according to the invention; Figs. 3 and 4 partial exploded views of the door closing system according to the invention; Figs. 5 and 6 partial exploded views of a first door handle unit of the door closing system according to the invention and a first mounting plate.

[0030] Fig. 1Figure 1 shows a partial exploded view of a door locking system 1 according to the invention. The door locking system 1 comprises a first door handle unit 2a with a first door handle 3a and a second door handle unit 2b with a second door handle 3b. The door handles 3a and 3b are pivotable about a common pivot axis SA. The door locking system 1 also comprises a first mounting plate 4a and a second mounting plate 4b, the respective mounting plates 4a and 4b being arranged transversely to the pivot axis SA and axially spaced apart from each other. The mounting plates 4a and 4b are screwed together through a door (not shown here for clarity) by means of two mounting screws 5 and are thus fixed to the door in a rotationally and axially fixed manner. The respective door handle units 2a and 2b are arranged axially fixed to the respective mounting plates 4a and 4b, facing away from each other.

[0031] In Fig. 1The first door handle unit 2a and the first mounting plate 4a are shown separated in an exploded view, and the second door handle unit 2b is shown connected to the mounting plate 4b. The construction of the first door handle unit 2a is discussed in detail below. The second door handle unit 2b can be identical or different from the first door handle unit 2a.

[0032] The first door handle unit 2a comprises a support ring 6 and a cover cap 7, the support ring 6 being arranged radially and axially between the cover cap 7 and the first door handle 3a. A handle carrier plate 8 is arranged between the cover cap 7 and the first mounting plate 4a, and this carrier plate can be connected to the mounting plate 4a in a rotationally fixed manner via a positive locking unit 9. The positive locking unit 9 is formed by openings 10 in the handle carrier plate 8 and by pins 11 on the first mounting plate 4a. The first door handle unit 2a also comprises a pivot unit 12 with a return spring 13 and a stop element 14. For attaching the individual elements to the door handle 3a, the first door handle unit 2a also includes a washer 15 and a retaining ring 16. The washer 15 advantageously compensates for manufacturing deviations and tolerances.It is also conceivable that the first door closing unit 2a has several axially adjacent washers 15.

[0033] In the first door handle unit 2a, the support ring 6, the cover cap 7, the handle carrier plate 8, the return spring 13, the stop element 14, the washer 15, and the retaining ring 16 are arranged axially from the door handle 3a to the first mounting plate 4a in the order mentioned. The individual elements are axially fixed to the door handle 3a between a stop 17 circumferentially around the pivot axis SA and the retaining ring 16. The retaining ring 16 is axially fixed in a circumferential groove 20 of the door handle 3a.

[0034] The cover cap 7 is rotatably mounted on the door handle 3a and can be screwed to the mounting plate 4a via a lateral thread. The pivoting unit 12 pivots the door handle 3a onto the handle support plate 8, allowing the door handle 3a to be pivoted manually from a closed position to an open position against the spring force of the return spring 13, and automatically from the open position to the closed position by means of the return spring 13. The handle support plate 8 is fixed to the mounting plate 4a by means of the positive locking unit 9. Thus, the door handle 3a is pivotally mounted on the mounting plate 4a and on the door (not shown here).

[0035] The axially fixed arrangement of the first door handle unit 2a on the first mounting plate 4a is achieved by a polygonal pin 18 of the door locking system 1. The polygonal pin 18 engages axially with the two door handles 3a and 3b and is positively locked to them by its shape, preventing rotation. Due to the polygonal pin 18, the two door handles 3a and 3b can pivot together about the pivot axis SA when one of the door handles 3a and 3b is pivoted. The first door handle 3a, and thus the entire door handle unit 2a, is axially fixed to the polygonal pin 18 by means of a setscrew (not shown) in a manner known to those skilled in the art. This axially fixes the first door handle unit 2a, and in particular the cover cap 7, to the mounting plate 4a. The aforementioned screw connection between the mounting plate 4a and the cover cap 7 further secures the door locking unit 2a to the mounting plate 4a.However, since the cover cap 7 is axially fixed to the door handle 3a, the cover cap 7 cannot be detached from the mounting plate 4a as long as the axially fixed connection between the polygonal pin 18 and the first door handle 3a is not released.

[0036] According to the invention, the cover cap 7 is formed in one piece and axially fixed to the door handle 3a, so that the cover cap 7 cannot be removed without the door handle 3a, or as long as the connection between the polygonal pin 18 and the first door handle 3a is not released. Therefore, in the door locking system 1 according to the invention, no simplified access to the interior of the door locking system 1 can be gained from the outside, and the door locking system 1 cannot be damaged. Furthermore, the cover cap 7 cannot be easily removed, and / or the door handle 3a cannot be damaged or scratched with the removed cover cap 7.

[0037] Fig. 2Figure 1 shows a view of the assembled door closing system 1 according to the invention. Here it is particularly easy to see that the two mounting plates 4a and 4b are screwed together via the two mounting screws 5 and are thus axially spaced apart from each other and coaxially aligned.

[0038] Fig. 3 and Fig. 4The figures show partially exploded views of the door locking system 1 according to the invention. Here, the first door handle unit 2a and the second door handle unit 2b are shown during the assembly of the door locking system 1. The first door handle unit 2a is assembled ready for installation, and the second door handle unit 2b is pre-assembled on the mounting plate 4b. During the installation of the door locking system 1 on the door – not shown here – the first mounting plate 4a is first fixed to the second mounting plate 4b with the pre-assembled second door handle unit 2b using the screws 5. Then, the first door handle unit 2a, or the first door handle 3a, is engaged with the polygonal spindle 18 and moved axially towards the mounting plate 4a. Simultaneously, the cover cap 7 is screwed to the first mounting plate 4a.The first door handle 3a is then screwed onto the multi-sided pin 18 via the grub screw - not shown here - thereby axially fixing the first door handle unit 2a to the mounting plate 4a.

[0039] Fig. 5 and Fig. 6 The figures show partially exploded views of the first door handle unit 2a of the door closing system 1 according to the invention on the first mounting plate 4a. Fig. 5 It is particularly evident that a handle stop 19 is formed on the handle support plate 8, with which the stop element 14 of the swivel unit 12 interacts via the return spring 13.

Claims

1. Door closure system (1) for opening and closing a door, - wherein the door closure system (1) has a first door handle unit (2a) with a first door handle (3a) that is pivotable about a pivot axis (SA) and with a covering cap (7) oriented transversely to the pivot axis (SA), - wherein the door closure system (1) has a second door handle unit (2b) which is identical to or differs from the first door handle unit (2a) and which has a second door handle (3b), - wherein the door closure system (1) has a first mounting plate (4a) oriented transversely to the pivot axis (SA) and a second mounting plate (4b) oriented transversely to the pivot axis (SA), - wherein the first mounting plate (4a) and the second mounting plate (4b) are connected to each other in an axially fixed and rotationally fixed manner, and - wherein the first door handle unit (2a) is axially fixedly arranged on the first mounting plate (4a) and the second door handle unit (2b) is axially fixedly arranged on the second door handle unit (4b), - wherein the covering cap (7) is connected to the first mounting plate (4a) in an axially fixed manner and to the first door handle (3a) in an axially fixed and rotatable manner, and - wherein the covering cap (7) is only axially detachable together with the first door handle (3a) from the first mounting plate (4a), characterised in that - the covering cap (7) has a thread running around the pivot axis (SA) and the first mounting plate (4a) has a mating thread running around the pivot axis (SA), and - the covering cap (7) and the first mounting plate (4a) are screwed together, and - the covering cap (7) is formed in one piece and in the shape of a pot and covers the mounting plate (4a) from the outside on a side which faces the first door handle (3a) and which is oriented transversely to the pivot axis (SA) and on a side running around the pivot axis (SA).

2. Door closure system according to claim 1, characterised in that - the door closure system (1) has a polygonal pin (18) oriented parallel to the pivot axis (SA), and - the first door handle (3a) and the second door handle (3b) are each connected to the polygonal pin (18) in an axially fixed and rotationally fixed manner.

3. Door closure system according to claim 2, characterised in that after the polygonal pin (18) has been connected in an axially fixed manner to the first door handle (3a) and to the second door handle (3b), the covering cap (7) cannot be axially detached from the first mounting plate (4a).

4. Door closure system according to any one of the preceding claims, characterised in that the first door handle unit (2a) has a supporting ring (6), wherein the supporting ring (6) is arranged radially and / or axially between the covering cap (7) and the first door handle (3a) and rotatably supports the covering cap (7).

5. Door closure system according to any one of the preceding claims, characterised in that - the first door handle unit (2a) has a handle carrier plate (8) which is arranged axially between the mounting plate (4a) and the covering cap (7), and - the handle carrier plate (8) is connected to the first door handle (3a) in an axially fixed and rotatable manner and to the mounting plate (4a) in a rotationally fixed manner.

6. Door closure system according to claim 5, characterised in that - the handle carrier plate (8) is formed with the first mounting plate (4a) by way of a form-fitting form-fit unit (9) with at least one axially oriented pin (11) and with at least one opening (10) complementary to the pin (11), and - the opening (10) is formed in the handle carrier plate (8) and the pin (11) is formed on the first mounting plate (4a) or vice versa.

7. Door closure system according to any one of the preceding claims, characterised in that the first door handle unit (2a) has a pivoting unit (12), wherein the pivoting unit (12) pivotably connects the first door handle (3a) to the handle carrier plate (8).

8. Door closure system according to claim 5 and 7, characterised in that - the pivoting unit (12) has a return spring (13), and - the first door handle (3a) can be manually pivoted on the handle carrier plate (8) from a closed position into an open position counter to a spring force of the return spring (13), and - the first door handle (3a) can be automatically pivoted on the handle carrier plate (8) from the open position into the closed position by means of the return spring (13).