Mobile door opening device

Abstract

Mobile door opening device (1) for assisted opening of a door (2), comprising a housing (3), an opening element (4) for opening a door leaf (2a) of a door (2) and at least one energy accumulator (5), wherein the opening element (4) can be acted upon by a force by means of the at least one energy accumulator (5), wherein at least one fastening device (6) is provided for releasably fastening the mobile door opening device (1) to a door frame (2b) of the door (2), characterized in that the opening element (4) has a gear or a gear segment (12), wherein the gear or the gear segment (12) engages with a rack (13) connected to the energy accumulator (5).

Description

[0001] The invention relates to a mobile door opening device for assisted opening of a door, in particular a swing door, comprising a housing, an opening element for opening a door leaf of the door and at least one energy accumulator, preferably arranged in the housing, wherein the opening element can be acted upon by a force by means of the at least one energy accumulator, as well as a method for assisted opening of a door with such a mobile door opening device and the use of such a mobile door opening device for assisted opening of a door during access to an apartment and / or building by special forces.

[0002] Devices for automatically closing doors are well documented in the state of the art. However, door-opening devices for assisted door opening are also already known. These door-opening devices can be structurally quite similar to devices for closing doors.

[0003] Typically, these door-opening devices are mounted on a door leaf or door frame and have a lever for transmitting an (opening) force to the door frame or door leaf. Door-opening devices are also known that can be mounted on the underside of a door lintel. For example, WO 2012 / 095 096 A2 discloses such a door-opening device. FR 2 850 287 A1 relates to a device for opening doors and windows. An opening device is known from US 4 657 225 A. US 4 890 818 A relates to a device for breaking open a door that is inserted into a doorpost.

[0004] Such door opening devices are usually arranged stationary on a door and thus make it easier to open the door.

[0005] However, mobile door opening devices are unknown in the state of the art. For the purposes of this application, a mobile door opening device is defined as a door opening device that can be easily and quickly attached to and removed from a wide variety of doors. In particular, a mobile door opening device should also be small and light enough to be easily transported by one person.

[0006] Such mobile door opening devices can be particularly advantageous when special forces access apartments and / or buildings, in order to assist in opening a door and also keep it open.

[0007] The object of the present invention is therefore to provide a mobile door-opening device that can be easily and quickly attached to a door. Furthermore, a method for assisted door opening using such a mobile door-opening device, as well as the use of such a mobile door-opening device for assisted door opening during access to apartments and / or buildings by special forces, is also to be specified.

[0008] This object is achieved by the features of claims 1, 13 and 14.

[0009] In a mobile door opening device according to the invention, at least one fastening device is provided for releasably, and preferably non-positively and / or positively, fastening the mobile door opening device to a door frame, preferably to vertical side parts of the door frame.

[0010] This makes it possible to easily attach and remove a door opening device to different doors.

[0011] A detachable connection in the sense of this application is a connection between two parts (door frame and mobile door opening device) which can be separated and re-fixed without damaging or destroying the parts.

[0012] As already explained, such a mobile door opening device can be used by special forces for access to apartments and / or buildings.

[0013] To do this, the mobile door opening device is mounted on a door. The door lock is then released (for example, by operating the door handle or by breaking the door), after which the door is opened by the mobile door opening device.

[0014] Opening the door lock can also represent an initial opening movement of the door.

[0015] Advantageously, the door can also be opened completely using the mobile door opening device.

[0016] This means no one has to open the door and thus avoid entering a danger zone. For example, all special forces involved can take cover to the side of the door when the door is opened.

[0017] If the mobile door opening device is mounted on vertical side panels of the door frame, and particularly between the vertical side panels, the door opening device can also achieve a blocking effect. This means that the door opening device can block or impede passage through the door, thereby reducing the danger posed by people escaping.

[0018] With regard to a method according to the invention, the following steps are provided: - Detachable fastening of the mobile door opening device to the door frame, preferably by clamping the mobile door opening device between the vertical side parts of the door frame, - Unlocking the locking device so that the opening element comes into contact with the door leaf, - Opening of the door lock by a user, and - Automatic opening of the door via the mobile door opening device.

[0019] Furthermore, protection is also sought for the use of a mobile door opening device according to the invention for assisted opening of a door during access to a home and / or building, preferably by special forces.

[0020] Further preferred embodiments are defined in the dependent claims.

[0021] Advantageously, the mobile door opening device can be attached to the door frame without tools.

[0022] Preferably, it can be provided that the fastening device has at least two contact elements for contacting the door frame.

[0023] A door frame can be contacted easily using the contact elements.

[0024] Advantageously, the contact elements can have contact surfaces that can be brought into contact with the door frame. These contact surfaces can have an anti-slip surface, for example, made of rubber, which can ensure a better grip of the contact elements.

[0025] Additionally, the contact elements can be pivoted. This makes it easier to attach the mobile door opening device, as it can also be mounted at an angle.

[0026] It can be provided that the fastening device has at least one spreader bar rotatably mounted on or in the housing, wherein the at least one spreader bar is movable relative to the housing by a rotational movement of the at least one spreader bar along its longitudinal extent.

[0027] By twisting the spreader bar, the mobile door opening device can be attached to the door frame. In particular, the mobile door opening device can be spread in the door frame (between the vertical side panels of the door frame) using the spreader bar.

[0028] It can further be provided that at least one of the contact elements is connected to the at least one spreader rod via a first threaded connection with a first direction of rotation, and wherein the at least one spreader rod is connected to the housing by a second threaded connection with a second direction of rotation opposite to the first direction of rotation.

[0029] This represents a simple way to convert a rotational movement of the spreader bar into a movement of the spreader bar along its longitudinal extent relative to the housing.

[0030] Due to the first threaded connection of one of the contact elements with the spreader bar, a rotational movement of the spreader bar also leads to a movement of the spreader bar relative to the contact element.

[0031] Preferably, it can also be provided that another of the at least two contact elements is arranged, preferably pivotably, on the housing.

[0032] It is therefore possible to achieve a movement of the contact elements relative to each other by turning the spreader bar, whereby the mobile door opening device can be spread in the door frame.

[0033] Particularly preferably, it can be provided that the fastening device is designed to be adjustable in length in order to adapt the fastening device to the door frame.

[0034] This allows the mobile door opening device to be used with a wide variety of doors. For example, the door opening device can be designed to be length-adjustable to fit door frames with an opening width between 760 mm and 1230 mm. Other adjustment ranges are also conceivable, of course.

[0035] Preferably, the length adjustment of the mobile door opening device can be carried out continuously and / or without tools.

[0036] It can also be provided that the at least one spreader bar has a first partial bar and a second partial bar, preferably wherein the first and the second partial bar are arranged concentrically to one another.

[0037] In one embodiment, it can be provided that the first threaded connection is arranged on the first partial rod and the second threaded connection is arranged on the second partial rod.

[0038] Particularly preferably, it can be provided that the fastening device has a locking device, wherein the first partial rod and the second partial rod can be locked relative to one another in a locking position of the locking device by means of the locking device and can be moved relative to one another in a release position of the locking device.

[0039] This represents a simple way to achieve length adjustment of the mobile door opening device.

[0040] In a release position, the two partial bars can be moved relative to each other and thus the length of the spreader bar and thus the mobile door opening device can be adapted to a door.

[0041] The locking device allows the individual bars to be secured to each other. The mobile door opening device can then be attached to the door frame.

[0042] In particular, it can also be provided that the two partial rods are designed to be telescopically connected to one another. For transporting the mobile door opening device, the partial rods can be telescoped into one another to keep the dimensions of the mobile door opening device as small as possible.

[0043] The mobile door opening device can be designed so compact that it can be easily carried by one person.

[0044] The weight of the mobile door opening device can also be kept low. Preferably, the mobile door opening device weighs less than 7 kg.

[0045] In one embodiment, it can be provided that the opening element has a gear or a gear segment, wherein the gear or the gear segment engages with a rack connected to the energy accumulator.

[0046] This is a simple way to apply force from the energy storage device to the opening element.

[0047] The energy storage device can be designed, in particular, as a gas spring. However, other energy storage device designs are also possible.

[0048] The energy storage device should be dimensioned in such a way that the door can always be opened reliably, even if the door has an automatic door closer, for example.

[0049] However, it may also be necessary to perform an initial opening movement of the door in order to initiate automatic opening of the door using the mobile door opening device.

[0050] The energy storage device can be dimensioned accordingly depending on the door and other circumstances.

[0051] Furthermore, a locking device can be provided which blocks movement of the opening element in an open position of the door.

[0052] Such a locking device can lock the door in an open position and thus prevent it from being closed accidentally or undesired.

[0053] Advantageously, the locking device can have a locking lever which can be brought into engagement with the gear or the gear segment.

[0054] The locking lever can form a ratchet with the gear or gear segment. When the opening lever is opened, the locking lever engages with the teeth of the gear or gear segment, thus preventing the opening lever from closing.

[0055] The locking lever can be pre-tensioned against the gear or gear segment via an additional force accumulator, for example in the form of a compression spring.

[0056] A locking device can also be provided, by means of which the opening element can be locked relative to the housing. The locking device serves to lock the opening element relative to the housing against the force of the energy accumulator. If the mobile door opening device is attached to the door frame, the opening element can be brought into contact with the door leaf by releasing the locking device.

[0057] The locking device can have a pin which is movably, preferably displaceably, mounted on the housing and which can engage in an opening in a locking element, whereby the opening element is locked relative to the housing.

[0058] The pin can be actuated, preferably moved, via an actuating element for locking and unlocking. The actuating element can be, for example, a knob or the like.

[0059] According to a further embodiment, it can be provided that a triggering device is provided by means of which the locking device can be actuated, preferably released.

[0060] More advantageously, the triggering device can be designed such that the locking device can be actuated from a point spatially spaced from the mobile door opening device.

[0061] This allows a user to maintain an even greater distance from a door being opened during the opening process, which can further reduce the risks for a user already described.

[0062] The triggering device can comprise a triggering part arranged on the mobile device and an actuating part that can be handled by a user.

[0063] The trigger part can, for example, comprise a trigger element which can actuate the actuating element and / or the pin of the locking device.

[0064] This can, for example, have a claw-shaped section by means of which a positive connection with the actuating element can be established.

[0065] The trigger element can be pre-tensioned via an energy accumulator, preferably a compression spring.

[0066] In one embodiment, it is conceivable that the trigger part and the actuating part are coupled via a coupling device, preferably a Bowden cable, preferably mechanically. However, it is also conceivable that the coupling takes place via corresponding data carrier signals, wirelessly or via cable.

[0067] For example, it can be provided that the actuating part comprises an actuating lever for actuating the coupling device.

[0068] Advantageously, the opening element is rotatably mounted on or in the housing.

[0069] The opening element can also have a tensioning lever. Using the tensioning lever, the opening element can be more easily pre-tensioned against the force of the energy storage device.

[0070] In particular, the clamping lever can be located essentially inside the opening lever when not in use. For use, the clamping lever can be folded out of the opening element, for example.

[0071] According to a further embodiment, a transport lock can be provided.

[0072] The transport lock allows the opening lever and / or the energy storage device to be secured relative to the housing. This prevents accidental activation of the mobile door opening device, especially during transport.

[0073] The transport lock can be implemented, for example, by one or more locking pins.

[0074] It is also conceivable for at least one of the contact elements to be actuated by an additional force accumulator. This force accumulator can be used to pre-tension the fastening device before the actual clamping. To do this, the additional force accumulator is manually compressed before the length is adjusted.

[0075] Alternatively or additionally, a pump lever can also be provided. By operating the pump lever, the fastening device can be pre-tensioned after the length has been adjusted.

[0076] Further details and advantages of the invention will be explained in more detail below with reference to the figures and the drawings, in which: Fig. 1 is a schematic perspective view of a mobile door opening device, a cover not being shown, Fig. 2 a schematic exploded view of the mobile door opening device Fig. 3a is a schematic perspective view of the mobile door opening device in a closed position, Fig. 3b is a schematic perspective view of the mobile door opening device in an open position, and Fig. 4 a schematic perspective view of the mobile door opening device and a door in an open position.

[0077] The Fig. 1 shows a schematic, perspective view of a mobile door opening device 1, wherein a cover of the housing 3 is not shown and the Fig. 2 is a schematic exploded view of the mobile door opening device 1. In these figures, the mobile door opening device 1 is shown in an open position.

[0078] The opening element 4 is rotatably mounted in the housing 3. In the open position, the opening element 4 rests against a stop 3a of the housing 3.

[0079] The opening element 3 is non-rotatably connected to a gear segment 12, which engages with a rack 13. The rack 13 is connected to the energy accumulator 5.

[0080] In this embodiment, the energy accumulator 5 is designed as a gas tension spring, wherein a piston rod 5a of the energy accumulator 5 is arranged on the housing 3.

[0081] The opening element 4 also has a locking element 15a. The locking element 15a is part of the locking device 15. A pin 15b of the locking device 15 can engage an opening in the locking element 15a, thereby locking the opening element 4 relative to the housing 3. For this purpose, the pin 15b is mounted on the housing 3.

[0082] An actuating element 15c in the form of a knob is arranged on the pin 15b, via which the pin 15c can be moved. A release device (not shown) can move the pin 15b via the actuating element 15c and thus release the locking device 15.

[0083] A fastening device 6 comprises a spreader bar 8, which has a first partial bar 8a and a second partial bar 8b. The two partial bars 8a and 8b are concentric and telescopic. In this embodiment, the second partial bar 8b has a larger diameter than the first partial bar 8a.

[0084] The second partial rod 8b is rotatably connected to the housing 3 via a second threaded connection 10. In this embodiment, the connection of the threaded connection 10 to the housing 3 is made via the pin 7b, which simultaneously also connects the contact element 7 to the housing 3 (see Fig. 2).

[0085] The first partial rod 8a is connected to a contact element 7 via a first threaded connection 9, wherein the first threaded connection 9 and the second threaded connection 10 have opposite directions of rotation.

[0086] The two partial rods 8a, 8b are connected to each other via a locking device 11. The locking device 11 allows the two partial rods 8a, 8b to be locked relative to each other in a locked position. In a released position, the partial rods 8a, 8b are movable relative to each other.

[0087] The two partial rods 8a, 8b can be locked using various known locking systems. Advantageously, however, the locking can be achieved tool-free and continuously over the length of the first partial rod 8a.

[0088] The locking device 11 has an actuating element 11a for actuating the locking device 11, i.e., for locking and unlocking the two partial rods 8a, 8b. The actuating element 11a can also serve as a lever for rotating the spreader bar 8.

[0089] It can be seen that both contact elements 7 are pivotally mounted. This makes it possible to position the mobile door opening device 7 at an angle. It is also conceivable that the contact elements 7 are pivotally mounted about three axes, for example, via a ball joint.

[0090] The contact elements 7 have contact surfaces 7a, which are fixed to a door frame 2b (see Fig. 4) can come into contact. The contact surfaces 7a advantageously have a slip-resistant rubber surface. Of course, other slip-resistant materials can also be used.

[0091] A locking device 14 is also provided. The locking device 14 has a locking lever 14a, which forms a ratchet with the gear segment 12. This means that when the opening element 4 opens, the locking lever 14a engages with the teeth of the gear segment 12, thus preventing the opening element 4 from closing accidentally. In an open position, the locking lever 14a then secures the opening element 4. In this embodiment, the locking lever 14a itself can be used to unlock the locking device 14.

[0092] The Fig. Figure 3a shows a schematic perspective view of the mobile door opening device 1 in a closed position and the Fig. 3b the mobile door opening device 1 in an open position.

[0093] The configuration according to Fig. 3a corresponds to the one in which the mobile door opening device 1 is transported.

[0094] The opening element 4 is fixed relative to the housing 3 via the locking device 15, the energy accumulator 5 is preloaded.

[0095] A transport lock 16 is provided, which has two locking pins 16a, 16b. A first locking pin 16a can be inserted into openings 3b of the housing and into an opening 4a of the opening element 4. The first locking pin 16a thus secures the opening element 4 in addition to the locking device 15.

[0096] The second locking pin 16b can be inserted into second openings 3c of the housing 3 and blocks the movement of the energy accumulator 5.

[0097] Furthermore, it can also be seen that the two partial rods 8a, 8b are fully telescoped, so that the mobile door opening device 1 has compact dimensions.

[0098] To activate the mobile door opening device 1, the transport lock 16 is first released. The locking device 15 can then be released by retracting the pin 15a, thereby releasing the opening element 4. The force accumulator 5 relaxes and pivots the opening element 4 via the racks 12 and the gear segment 13.

[0099] The Fig. 4 shows a schematic perspective view of a mobile door opening device 1 and a door 2 in an open position.

[0100] The mobile door opening device 1 is attached to the door frame 2b by means of the fastening device 6. To achieve this attachment, the locking device 11 is released in a first step. This is done by actuating the actuating element 11a.

[0101] The partial rods 8a, 8b are therefore movable relative to each other. The first partial rod 8a can be extended until both contact elements 7 rest with their contact surfaces 7a against the vertical side parts 3c of the door frame 2.

[0102] Subsequently, the two partial rods 8a, 8b are locked together, and the spreader bar 8 is rotated. Due to the two threaded connections 9, 10 with opposing rotation directions, the rotation of the spreader bar 8 causes the contact elements 7 to move apart. The mobile door opening device 1 is thus clamped between the vertical side parts 2c of the door frame 2.

[0103] To assist in opening the door 2, the transport lock 16 is removed and the locking device 15 is released. The opening element 4 is pivoted by the energy accumulator 5 and comes into contact with the door leaf 2a.

[0104] A user must now open the lock on door 2. This can be done by simply turning a door handle or, for example, by forcing open door 2.

[0105] The door 2 is then opened by the opening element 4 until either the door 2 is blocked by a wall or the like or the opening element 4 rests against the stop 3a.

[0106] To release the mobile door opening device 1, the spreader bar 8 is simply turned again and the first partial bar 8a is telescoped into the second partial bar 8b.

[0107] The mobile door opening device 1 can then be made ready for use again by manually folding in the opening element 4. List of reference symbols: 1 Mobile door opening device 2 doors 2a Door leaf 2b door frame 2c vertical side panels 3 housings 3a stop 3b Opening 3c second openings 4 opening element 4a Opening 5 energy storage 6 Fastening device 7 Contact element 8 spreader bar 8a first partial bar 8b second part of the bar 9 First threaded connection 10 Second threaded connection 11 Locking device 11a Actuating element 12 gear segment 13 Rack 14 Locking device 14a locking lever 15 locking device 15a locking element 15b pen 15c Actuating element 16 Transport security

Claims

[1] Mobile door opening device (1) for assisted opening of a door (2), comprising a housing (3), an opening element (4) for opening a door leaf (2a) of a door (2) and at least one energy accumulator (5), wherein the opening element (4) can be subjected to a force by means of the at least one energy accumulator (5), wherein at least one fastening device (6) is provided for releasably fastening the mobile door opening device (1) to a door frame (2b) of the door (2), characterized by that the opening element (4) has a gear or a gear segment (12), wherein the gear or the gear segment (12) engages with a rack (13) connected to the energy accumulator (5). [2] Mobile door opening device (1) according to claim 1, wherein the fastening device (6) has at least two contact elements (7) for contacting the door frame (2b). [3] Mobile door opening device (1) according to one of claims 1 or 2, wherein the fastening device (6) has at least one spreader bar (8) rotatably mounted on or in the housing, wherein the at least one spreader bar (8) is movable by a rotational movement of the at least one spreader bar (8) relative to the housing (3). [4] Mobile door opening device (1) according to claims 2 and 3, wherein at least one of the contact elements (7) is connected to the at least one spreader bar (8) via a first threaded connection (9) with a first direction of rotation, and wherein the at least one spreader bar (8) is connected to the housing (3) by a second threaded connection (10) with a second direction of rotation opposite to the first direction of rotation. [5] Mobile door opening device (1) according to claim 4, wherein another of the at least two contact elements (7) is arranged on the housing (3). [6] Mobile door opening device (1) according to one of claims 1 to 5, wherein the fastening device (6) is designed to be adjustable in length for adapting the fastening device (6) to the door frame (2b). [7] Mobile door opening device (1) according to one of claims 3 to 5, wherein the at least one spreader bar (8) has a first partial bar (8a) and a second partial bar (8b). [8] Mobile door opening device (1) according to claims 4 and 7, wherein the first threaded connection (9) is arranged on the first partial rod (8a) and the second threaded connection (10) is arranged on the second partial rod (8b). [9] Mobile door opening device (1) according to one of claims 7 or 8, wherein the fastening device (6) has a locking device (11), wherein the first partial rod (8a) and the second partial rod (8b) can be locked relative to one another in a locking position of the locking device (11) by means of the locking device (11) and can be moved relative to one another in a release position of the locking device (11). [10] Mobile door opening device (1) according to one of claims 1 to 9, wherein a locking device (14) is provided which blocks a movement of the opening element (4) in an open position of the door (2). [11] Mobile door opening device (1) according to claim 10, wherein the locking device (14) has a locking lever (14a) which can be brought into engagement with the gear or the gear segment (12). [12] Mobile door opening device (1) according to one of claims 1 to 11, wherein a locking device (15) is provided by means of which the opening element (4) can be locked relative to the housing (3). [13] Method for opening a door by means of a mobile door opening device (1) according to claim 12, characterized by following steps: - Detachable fastening of the mobile door opening device (1) to the door frame (2b), preferably by clamping the mobile door opening device (1) between the vertical side parts (2c) of the door frame (2b), - Unlocking the locking device (15) so that the opening element (4) comes into contact with the door leaf (2a) and thus contacts it, - Opening of the door lock by a user, and - Automatic opening of the door (2) via the mobile door opening device (1). [14] Use of a mobile door opening device (1) according to one of claims 1 to 12 for assisted opening of a door (2) during access to an apartment and / or building.

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