Closing aid

Abstract

A closing aid (1) is proposed, comprising a base body (10), a receiving housing (11), a drive (12), and a gearbox (13), wherein the drive (12), the gearbox (13), and the receiving housing (11) are arranged on or in the base body (10), and wherein the drive (12) is connected to the receiving housing (11) via the gearbox (13), and wherein the receiving housing (11) is designed to receive a door opener (9) or a screw-on piece. It is essential that the receiving housing (11) is rotatably arranged on the base body (10) about an axis of rotation.

Description

[0001] The invention relates to a closing aid according to the features of the preamble of claim 1 and a method for closing a door according to the features of the preamble of claim 14.

[0002] To ensure the safe transfer of a pivoting door leaf into the closed position, doors are equipped with an additional hydraulic, electric, or mechanical door closer. The door closer transfers additional force to the door leaf during the closing movement, thus bringing the door into the closed position. A disadvantage is that, due to the changing lever arm during the rotation of the door leaf, only a small amount of force can be transferred to the door leaf shortly before the door is in the closed position.

[0003] Doors are also known to have a closing aid, which is arranged as separate components on the door leaf and the door frame and supports the secure closing of a door even in the final angular positions before the closed position. The disadvantage is that known closing aids are always arranged as separate components on the door frame and / or the door leaf. The closing aid components usually have to be attached and wired in specially designed additional openings on the door frame and door leaf.

[0004] The present invention is based on the object of providing a simple closing aid for doors that offers a high level of functional reliability despite its simple design, and of providing a reliable and safe method for closing a door. Preferably, the closing aid should be able to be integrated into existing door components in order to minimize installation effort and not compromise the design of the door.

[0005] The object is achieved according to the invention by a closing aid according to the features of claim 1.

[0006] According to the invention, a closing aid is proposed, comprising a base body, a receiving housing, a drive, and a gear mechanism. The drive, the gear mechanism, and the receiving housing are arranged on or in the base body, and the drive is connected to the receiving housing via the gear mechanism. The receiving housing is designed to accommodate a door opener or a screw-on piece. It is essential that the receiving housing is arranged on the base body so that it can rotate about a rotation axis by means of the drive, or is moved linearly toward the closed position by means of the drive.

[0007] Furthermore, the object is achieved according to the invention by a method for closing a door according to the features of claim 14.

[0008] Method for closing a preferably rotatably mounted door leaf with a closing aid arranged in a door frame, the closing aid preferably comprises a drive, a base body, a receiving housing and a gear, with the steps: i) Moving the door leaf, which is arranged movably in a door frame, into a closed position; ii) Closing the door;

[0009] What is important here is that in step ii) the engagement of a lock latch or a bolt in a door opener or a screw-on piece arranged in a receiving housing of the closing aid is first detected, and that subsequently in step ii) in order to close the door the receiving housing is rotated about a rotation axis by means of the drive or is moved towards the closed position by means of the drive.

[0010] In particular, the closing aid drives the door in the closing direction over the last few centimeters or millimeters before reaching the final closed position. This allows the door leaf to be pulled into a door seal, for example, by the closing aid. The closing aid can ensure that the closed position is reached safely, even in high wind pressure or with appropriate door seals. This occurs without increasing the manual force required to close the door leaf. This makes manual movement of the door easier. Automatic movement of the door can also be facilitated, particularly without increasing the force required by a door closer or door drive.

[0011] In particular, the door leaf has a latch or bolt on the leaf side, which interacts with a door opener or a screw-on piece to secure the door in the closed position. The latch on the leaf side can be designed in a conventional door lock, for example as a shooting latch or a deadbolt lock, or as a catch. In the closed position, the latch on the leaf side engages with the door opener of the closing aid or the screw-on piece of the closing aid. Rotating the receiving housing together with the door opener or screw-on piece accommodated therein causes the door opener latch or the screw-on piece to be moved towards the closed position, thereby taking the door leaf with it via the latch or bolt on the leaf side.

[0012] As an alternative to rotating the housing, it can also be provided to move the housing linearly toward the closed position via the drive. For this purpose, the drive can be designed as a linear drive.

[0013] An advantage of the closing aid according to the invention and the method according to the invention for closing a door leaf is that the closing aid can be mounted in or on a door frame and has a receiving housing that is rotatable about a rotation axis, and that the door leaf is closed by rotating the receiving housing. A door opener or a screw-on piece can be arranged in the receiving housing. By rotating the receiving housing, the door opener or the screw-on piece is also rotated, whereby the locked door opener latch of the door opener or the screw-on piece acts on a latch on the door leaf side to pull the door leaf into the closed position.

[0014] Preferably, any known door opener or screw-on piece can be used in combination with the closing aid, simply by adapting the housing of the closing aid to the dimensions of the door opener or screw-on piece. Another advantage is that no additional elements are required on the door leaf; instead, the closing aid interacts with an existing latch or bolt of a door leaf lock, and closing is achieved via the latch or bolt of the door leaf.

[0015] A further advantage of the closing aid according to the invention and the method according to the invention for closing a door is that the housing and thus the door opener or the screw-on piece are rotatably mounted and are rotated to close the door. Rotating the door opener or the screw-on piece has the advantage that tilting is impossible, since no additional elements attached to the frame and the door leaf interact with each other to close the door. Another advantage is that such rotation occurs with low friction. Compared to a linear drive, there is therefore no risk of tilting with the closing aid according to the invention and the method according to the invention.

[0016] The gear mechanism can be provided with an eccentric, a spindle drive, and / or a toggle lever for rotating the housing around its axis of rotation. The advantage of such a gear mechanism is that the eccentric drive, the spindle drive, and / or the toggle lever mechanism have a self-locking function. This means that the door reliably remains in the closed position even in the event of a power failure.

[0017] It can be provided that the eccentric has a control element that has a center point that is formed outside its axis of rotation. It can be provided that the eccentric, preferably the control element, has a shape that forms an eccentric outer surface or an eccentric inner surface. It can be provided that the eccentric, preferably the control element, is connected to the drive, preferably a drive axis, via its axis of rotation and interacts with its eccentric outer surface or an eccentric inner surface to rotate the receiving housing, preferably interacting with the receiving housing directly or via a lever arm. In this way, the force of the drive can be transmitted via the eccentric to the receiving housing in a simple manner that saves energy but still has a high level of force. The eccentric outer surface or the eccentric inner surface can be designed as a control curve.

[0018] The spindle drive may include a spindle axis and a spindle nut. The spindle axis may be connected to the drive, driven by the drive, or configured as the drive axis of the drive, and the spindle nut may cooperate with the receiving housing to rotate the receiving housing.

[0019] This allows the power of the drive to be transferred to the receiving housing via the spindle drive through such a simple design.

[0020] In an advantageous embodiment, the gear can be designed as a toggle lever gear or have a toggle lever gear. In an advantageous embodiment, the toggle lever gear can be provided for rotating the receiving housing. In particular, the toggle lever gear can have a first arm and a second arm, wherein the first arm is connected at one end to the drive, preferably a drive axle, and at its second end to the base body, and the second arm is connected at one end to the first arm and at its second end to the receiving housing for rotating the receiving housing. As a result, the power of the drive can be transmitted to the receiving housing via the toggle lever gear in a very fail-safe manner.

[0021] The toggle mechanism can be provided with a backlash compensation feature. The backlash compensation allows the toggle mechanism, which executes a linear movement via the drive, to compensate for the rotary movement of the receiving housing, thereby preventing jamming. The first arm for backlash compensation can be arranged on the drive so that it can be linearly displaced, with the linear displacement direction being perpendicular to the direction of application of the drive. This design makes it very easy to achieve backlash compensation for the rotary movement and prevent jamming.

[0022] It can be provided that the receiving housing is designed as a hollow body for receiving the door opener or the screw-on piece. A door opener or a screw-on piece can be arranged within the receiving housing and firmly connected to it, for example by screwing. The receiving housing can enclose the door opener and / or the screw-on piece on multiple sides. It can be provided that the receiving housing has an opening, in particular arranged on the faceplate side, through which a lock latch or bolt engages the door opener or the screw-on piece. It can be provided that the receiving housing has a housing body and a housing cover. Such a receiving housing can be adapted in terms of its shape and / or its receptacle and / or dimensions to the door opener or the screw-on piece used in each case, whereby the closing aid can be used for a very wide spectrum of existing components.It is also possible to upgrade existing systems.

[0023] The base body can be designed as a single piece or in multiple pieces. It can be designed for the base body to encompass the receiving housing. In a multi-piece design, the base body can be arranged on two opposite sides of the receiving housing. The encompassing or multi-piece design allows for secure mounting and rotation of the receiving housing.

[0024] The drive and / or the gear unit can be fixedly mounted on or within the base body. The fixed arrangement of the drive and the gear unit on the base body enables rotation of the housing relative to the base body, which is rotatably mounted within the base body. Thus, the fixed arrangement of the base body relative to a door frame is sufficient to ensure the closing rotation of the housing. For this purpose, the base body can be inserted into a recess in a door frame and screwed there. The base body can be used for both wooden and tubular frames.

[0025] The housing can be arranged on the base body so that it can rotate by at least 5°, preferably 10°, and most preferably at least 15°. Such a design can ensure that the door is securely closed in the closed position.

[0026] It can be provided that fastening devices for the door opener or the screw-on piece are formed in the housing, preferably screw or plug connections. This allows the door opener or the screw-on piece to be easily and securely fastened in the housing. Furthermore, by using several different screw or plug connections, the housing can be used for a variety of different door openers or screw-on pieces.

[0027] The drive for rotating the receiving housing can be provided with a motor, preferably an electric motor. Preferably, an electric motor with a rotating drive shaft or a motor with a linear drive can be used. This provides a very space-saving drive that can be installed in the door frame even in confined spaces.

[0028] The drive can be controlled via a switch and / or sensors, in particular proximity sensors, preferably via a first and / or second sensor. The advantage of control via a switch is that the closing aid function can be triggered individually as required. The advantage of control via sensors is that the closing aid function is activated automatically with every closing movement of the door leaf.

[0029] In an advantageous embodiment, the drive can be controlled via at least one sensor, in that a first sensor is arranged in the receiving housing, preferably in the door opener or in the screw-on piece, for detecting the lock latch or the bolt in the door opener or the screw-on piece, preferably in order to start the drive. It can be provided that a first sensor is arranged in the receiving housing, preferably in the door opener or in the screw-on piece. It can be provided that the first sensor is designed as a lock latch contact of the door opener or the screw-on piece for detecting the lock latch or the bolt in the door opener or the screw-on piece. When the lock latch or the bolt engages in the receiving housing and triggers the contact, the closing aid is activated by the motor. This ensures that the closing aid only becomes effective after the lock latch or the bolt has engaged in the receiving housing.

[0030] It can be provided that a second sensor is formed in the closing aid in order to detect the end position of the receiving housing. Such a second sensor can be designed as a position sensor, such as a button or a light barrier, or as a pressure sensor or force sensor, such as a strain gauge or film sensor. Such a second sensor can be formed on or in the receiving housing or on the base body. Such a second sensor can also be implemented via the drive by measuring the current of the drive. The torque applied can be calculated from the current measurement of the drive. Such a second sensor can ensure a desired closing pressure regardless of the position of the lock latch.

[0031] A spring may be provided between the gear and the housing as an elastic coupling. The spring may be designed as a compression spring, preferably preloaded with at least 45 N. This spring allows the drive to always travel to the stop, with the compression spring absorbing the load when the door leaf is blocked. In such a configuration, the drive's limit switch is preferably triggered via load detection, for example, by determining the motor's current consumption.

[0032] The object is further achieved by a door assembly comprising a door frame, a door, and a closing aid according to one of the previously described embodiments arranged in the door frame. A door opener or a screw-on piece can be arranged in the closing aid in the door frame.

[0033] The door opener can be provided with a door opener latch, which locks or releases a latch or bolt in a defined manner in the direction of door opening under the action of a controllable unlocking mechanism. One advantage of using a door opener is that the door is immediately unlocked via the door opener, so the user does not notice any delay when opening due to the resetting of the closing aid.

[0034] It can be provided that the closing travel by rotating the housing is at least 2 mm, preferably at least 4 mm. The closing travel represents the distance to which a door leaf is pushed toward a door frame via a latch or bolt by the closing aid. Such a closing travel enables the door leaf to be securely pressed shut while simultaneously requiring a short closing time.

[0035] The closing aid can be designed to pull the door with a force between 45 N and 100 N. This means the preload on the door opener is increased by a maximum of 100 N. With the appropriate design of the door opener, this type of design can be used on fire doors.

[0036] The screw-on piece can be provided with a screw-on piece housing and a replacement piece, wherein the replacement piece is arranged in the screw-on piece housing, preferably screwed in. The replacement piece can be arranged in various positions on the screw-on piece housing. The replacement piece serves to hold a lock latch or a bolt. The screw-on piece can be used to securely hold a lock latch or a bolt in an adjustable position.

[0037] It can be provided that one or more closing aids are arranged as counterparts to a main lock and / or one or more secondary locks. Such a design with multiple closing aids can also enable the door to be securely closed with multi-point locking systems.

[0038] Further embodiments of the invention are illustrated in the figures and described below. The figures show one possible embodiment of the invention by way of example. This embodiment serves to illustrate a possible implementation of the invention and is not intended to be limiting. They show: Fig. 1: Door arrangement with a closing aid according to the invention; Fig. 2: Closing aid according to the invention arranged on a strike plate with door opener; Fig. 3: Closing aid according to the invention made of Fig. 2 ; Fig. 4: enlarged view of the closing aid from Fig. 3 without base body; Fig. 5a: closing aid according to the invention on a strike plate in the basic position with door opener; Fig. 5b: closing aid according to the invention made of Fig. 5a in basic position; Fig. 5c: Sectional view of the closing aid from Fig. 5a without base body in basic position; Fig. 6a: closing aid according to the invention on a strike plate in end position with door opener; Fig. 6b: closing aid according to the invention from Fig. 6a in final position; Fig. 6c: Sectional view of the closing aid from Fig. 6a without base body in final position; Fig. 7: Arrangement of a closing aid according to the invention in an angled strike plate; Fig. 8: Closing aid according to the invention with spring for preload; Fig. 9: Enlarged section of the closing aid from Fig. 8 without base body; Fig. 10: enlarged section of the closing aid from Fig. 8 without base body; Fig. 11: Housing of the closing aid made of Fig. 8 ; Fig. 12: Lever of the closing aid Fig. 8 ; Fig. 13:Eccentric of the closing aid from Fig. 8 ; Fig. 14: enlarged section of the closing aid from Fig. 8 without base body; Fig. 15: Housing of the closing aid made of Fig. 8 with spring for preload; Fig. 16a: closing aid according to the invention with spring for preload in basic position; Fig. 16b: gear of the closing aid from Fig. 16a in basic position; Fig. 17a: closing aid according to the invention with spring for preload in an intermediate position; Fig. 17b: gear of the closing aid from Fig. 17a in an intermediate position; Fig. 18a: closing aid according to the invention with spring for preload in end position; Fig. 18b: gear of the closing aid from Fig. 18a in end position; Fig. 19a: closing aid according to the invention with knee lever in basic position; Fig. 19b: closing aid from Fig. 19a in a first plan view; Fig. 19c: Closing aid from Fig. 19a in a second plan view; Fig. 19d: Closing aid from Fig. 19a in a third plan view; Fig. 20a: closing aid according to the invention with knee lever in end position; Fig. 20b: closing aid from Fig. 20a in a first plan view; Fig. 20c: Closing aid from Fig. 20a in a second plan view; Fig. 20d: Closing aid from Fig. 20a in a third top view;

[0039] Fig. 1 shows a door 2 with a pivotally mounted leaf 3, which is arranged in a frame 4 via hinges and can be moved. The leaf 3 has a lock 5 with a lock latch 6. A closing aid 1 according to the invention is arranged in the frame 4, in which a door opener 9 or a screw-on piece is arranged. The lock latch 6 engages the door opener 9 when the door 2 is in the closed position.

[0040] Fig. 2 shows a closing aid 1 according to the invention arranged on a locking plate 7. As in Fig. 3 shown, the closing aid 1 is Fig. 2 a base body 10, a receiving housing 11 and a drive 12. The drive 12 and the receiving housing 11 are each arranged on the base body 10. In Fig. 3 For clarity, the door opener 9 is not shown. Instead of a door opener 9, a screw-on piece can also be arranged in the receiving housing 11 in all embodiments.

[0041] In the example of Fig. 2 The base body is fixedly arranged on the strike plate 7. In this embodiment, the base body is formed in two parts with an upper base body section, which holds the receiving housing 11 via a rotation axis, and a lower base body section, which also holds the receiving housing 11 via a rotation axis, wherein the lower base body section also accommodates a gear 13 as in Fig. 4 The receiving housing 11 is thus mounted between the two base body sections so that it can rotate about a rotation axis. In this embodiment, both sections of the base body 10 are fixedly arranged on the strike plate 7.

[0042] The housing 11 in the Fig. 2 und 3 is designed as a hollow body in which the door opener 9 is arranged and secured. The fastening can be achieved by plug-in and / or screw connections.

[0043] Fig. 4 shows the housing 11, the drive 12 and the gear 13 of the closing aid from the Fig. 2 und 3 , whereby for the sake of clarity the base body 10 is not shown. The gear 13 has an eccentric 14 which is connected to the drive 12. Fig. 4 The rotational axis 20 of the receiving housing 11 is shown offset from the eccentric 14. The receiving housing 11 is rotatably arranged in the base body 10 via the rotational axis 20.

[0044] To understand the rotation of the housing 11 to close the door 2 by the closing aid of the Fig. 2 bis 4 will refer to the following Figuren 5 and 6 referred to.

[0045] Fig. 5a shows the closing aid 1 according to the invention with a gear 13, which has the eccentric 14 as in Fig. 5c shown in a sectional view below the housing 11. The closing aid 1 in Fig. 5a is arranged on the strike plate 7, wherein in the receiving housing 11 in Fig. 5a the door opener 9 is arranged. In the Figuren 5 The closing aid 1 according to the invention is shown in its basic position. The basic position is understood to be the position in which the door 2 is not yet pressed against the frame 4 by the closing aid.

[0046] As in Fig. 5c In the basic position of the closing aid 1, the eccentric 14 is centrally connected to the axis 21 of the drive 12 and is arranged in the base body 10 so that it can rotate about the axis 21 of the drive 12 by the drive 12. As already described above, the receiving housing 11 is arranged about its axis of rotation 20 in the base body 10. On the underside of the receiving housing 11, a pin 18 is fixedly arranged, which cooperates with an outer contour 34 of the eccentric 14 to rotate the receiving housing 11. By rotating the eccentric 14 clockwise in Fig. 5c the receiving housing 11 can be rotated about the axis of rotation 20 via the pin 18.

[0047] The Figuren 6a, 6b und 6c show the closing aid 1 according to the invention of Figuren 5a, 5b und 5c in the end position of the closing aid 1, ie in the position in which the door 2 is pressed against the frame 4 by its lock latch 6 via the closing aid 1.

[0048] In Fig. 6c the eccentric 14 is rotated approximately 270° clockwise compared to the position in the Fig. 5c The outer contour 34 pushes the pin 18 of the housing 11 to the left, which Fig. 6c is shown by the arrow. Due to the rotatable mounting of the receiving housing 11 via the rotation axis 20 in the base body, the receiving housing 11 rotates by moving the pin 18 as shown in Fig. 6a und 6b represented by the arrows. In the Fig. 6a und 6b The rotated housing 11 is shown opposite the base body 10. By rotating the housing 11, the door opener 9 is rotated as well, whereby when the lock latch 6 is inserted in the door opener 9, the leaf 3 of the door 2 is moved in the direction of the arrow in Fig. 6a is pulled against the frame 4.

[0049] Fig. 7 shows the closing aid 1 according to the invention in an angled striking plate 7, wherein the angled striking plate has a larger latch receiving opening 8 for the automatic opening of the door 2 by the door opener 9 for engaging the latch in the closing direction and for releasing the lock latch in the opening direction of the door 2. In this embodiment, too, the closing aid 1 is fixedly arranged on the angled striking plate 7 via its base body 10, wherein the receiving housing 11 of the closing aid 1 accommodates the door opener 9.

[0050] The Fig. 8 bis 15 show a further embodiment of the closing aid according to the invention. In this embodiment, a spring 31 is formed between the gear 13 and the receiving housing 11, which serves as an elastic coupling. This allows the drive 12 to always move to the stop, whereby the compression spring 31 absorbs the load when the sash 3 is blocked. A blocked sash 3 means that the sash 3 cannot be pulled any further toward the frame 4, even though the end position for the drive 12 has not yet been reached. In such an embodiment, the limit switch of the drive 12 preferably takes place via load detection, for example, by determining the current consumption of a motor.

[0051] For the design of the receiving housing 11 with the spring 31, the receiving housing 11 has two housing arms 33, wherein one housing arm 33 is formed upwards and one housing arm 33 is formed downwards as in Fig. 11 Due to its symmetrical design, the housing 11 can be used for a left or right door arrangement. As shown in Fig. 8 As shown, in this embodiment only one housing arm 33 interacts with the gear 13 via the spring 31. The spring 31 is firmly connected to a lever 30 via a screw and can be pre-tensioned by the screw, whereby the housing arm 33 engages between the lever 30 and the spring 31 as in Fig. 14 und 15 The screw passes through an opening in the housing arm 33. Thus, the receiving housing 11 can be rotated against the spring force, i.e., the preload of the spring 31, independently of the movement of the lever 30, or the lever 30 can be independently acted upon by the eccentric 14 without further rotating the receiving housing 11. To securely close the door 2, the spring 31 is preloaded with at least 50 N.

[0052] As in Fig. 9 As shown, the gear 13 of this embodiment also has an eccentric 14, which is shown in detail in Fig. 13 The eccentric 14 is rotatably mounted on the axis 21 of the drive 12 as shown in Fig. 9 und 10 In this embodiment, a roller 32 (instead of the pin 18 of the receiving housing 11) acts in the Fig. 2 bis 6 ) with the outer contour 34 of the eccentric 14. The roller 32 is arranged on a lever 30 as in Fig. 12 The lever 30 is arranged in the base body 10 so that it can rotate about a rotation axis.

[0053] To understand the rotation of the housing 11 to close the door 2 by the closing aid 1 of the Fig. 8 bis 15 will refer to the following Figuren 16 bis 18 referred to.

[0054] In the Fig. 16a , 17a and 18a is the closing aid 1 of the Fig. 8 bis 15 depicted in various positions. In the Fig. 16b , 17b and 18bis a sectional view just below a bottom of the housing 11 of the closing aids 1 of the Fig. 16a , 17a and 18a shown in the respective positions. In the Fig. 16b , 17b and 18b For better understanding, the base body 10 is not shown.

[0055] In the Fig. 16a und 16b The closing aid 1 is shown in its basic position. The basic position is understood to be the position in which the door 2 is not yet pressed against the frame 4 by the closing aid. As shown in Fig. 16a In this position, the receiving housing 11 is shown arranged parallel to the base body 10. Fig. 16b shows a sectional view just below the bottom of the receiving housing 11. The rotation axis 20 of the receiving housing 11 is also shown, which has a fixed position in the base body 10. The receiving housing 11 can be rotated around this rotation axis 20 as shown below in the Fig. 17 and 18 shown. Next shows Fig. 16b the gear 13 with the eccentric 14 in the basic position, which is rotatably mounted via the drive 12 and the lever 30 in the basic position, which acts via the spring 31 on the receiving housing 11 via the housing arm 33, wherein the lever 30 is arranged rotatably about its axis 23 in the base body 10.

[0056] In the Fig. 17a und 17b The closing aid 1 is shown in an intermediate position, which is located between the basic position and the end position. In the intermediate position, the eccentric 14 is arranged so as to be rotated counterclockwise from the basic position by the drive 12, whereby the lever 30 is rotated about its axis of rotation 23 by its roller 32 via the contact with the outer contour 34 of the eccentric 14. The lever 30 takes the spring 31 in this direction, whereby the housing arm 33 of the receiving housing 11 is also taken along and thereby a rotation of the receiving housing 11 about its axis of rotation 20 takes place as in Fig. 17a indicated by the arrow.

[0057] In the Fig. 18a und 18b The closing aid 1 is shown in the end position, ie in the position in which the door 2 is pressed against the frame 4 by its lock latch 6 via the closing aid 1. In this end position, the eccentric 14 is arranged turned further counterclockwise as in Fig. 18b shown, whereby the outer contour 34 causes the roller 32 and thus the lever 30 to be further rotated about the rotational axis 23 of the lever 30. This acts via the spring 31 on the housing arm 33, whereby the receiving housing 11 is rotated about the rotational axis 20 to the end position as shown in Fig. 18a represented by the arrow.

[0058] If the end position is reached by the stop of the sash 3 in the frame 4 before the position in Fig. 18a und 18b is reached, the position of the eccentric 14 and the lever 30 would be as shown in the Fig. 18a und 18b shown, but the housing arm 33 would be arranged offset upwards against the spring force of the spring 31 and thus the receiving housing 11 would be arranged less rotated relative to the base body 10.

[0059] The Figuren 19 and 20 show a further embodiment of the closing aid according to the invention with a toggle lever as gear 13.

[0060] Fig. 19a shows the receiving housing 11 in the basic position, which is arranged between the base body 10 and the rotational axis 20 of the receiving housing 11. A door opener 9 is arranged in the receiving housing 11. Instead of a door opener 9, a replacement piece can also be arranged. As in Fig. 19a As shown further, the drive 12 and the gear 13 on the base body 10 are designed as toggle levers.

[0061] The design of the gear 13 as a toggle lever is described in detail in the Fig. 19b, 19c und 19d shown in the basic position. The Figuren 19b und 19c show two side views. Fig. 19d shows the top view of the gear 13, whereby it should be noted that the Fig. 19d to the Fig. 19b und 19c is rotated and the receiving housing 11 is located on the left side. The toggle lever 15 has a first arm 16 and a second arm 17, wherein the first arm 16 is arranged with one end rotatably on the base body 10 and with its other end on the drive 12. The second arm 17 is arranged with one end on the first arm 16 so as to be rotatable about an axis and with its second end on the receiving housing 11. The drive 12 is designed as a linear drive in this embodiment. The rotation of the receiving housing 11 is obtained by the fixed arrangement of the second end of the second arm 17 on the receiving housing 11, offset from the axis of rotation 20 of the receiving housing, and a lifting movement of the second arm 17.

[0062] The point of engagement of the first arm 16 with the drive 12 is designed in this embodiment with a play compensation. The play compensation is achieved by the first arm 16 interacting with the drive 12 in a laterally displaceable manner via an axis, whereby the toggle lever 15 can compensate the rotation of the receiving housing 11 by a lateral offset to the drive 12, which is fixedly arranged on the base body 10, as in the comparison of the Fig. 19d and 20d shown.

[0063] Fig. 20a , 20b, 20c und 20d show the closing aid 1 of the Fig. 19a , 19b, 19c und 19din the end position. In this end position, the leaf 3 is pressed against the frame 4 by the lock latch 6, which engages the door opener 9, and by the closing aid 1. In the end position, the first arm 16 is displaced by the drive 12 toward the receiving housing 11, causing the second arm 17 to perform a lifting movement and thereby rotate the receiving housing 11 about its axis of rotation 20. List of reference symbols

[0064] 1 Closing aid 2 Door 3 Leaf 4 Frame 5 Lock 6 Lock latch 7 Strike plate 8 Latch receiving opening 9 Door opener 10 Base body 11 Housing 12 Drive 13 Gear 14 Eccentric 15 Toggle lever 16 First arm 17 Second arm 18 Pin of the housing 20 Rotation axis of the housing 21 Drive axis 22 Toggle lever axis 23 Lever axis 30 Lever 31 Spring 32 Roller 33 Housing arm 34 Outer contour

Claims

1. Closing aid (1), in particular for a door leaf rotatably mounted on a door frame, comprising a base body (10), a receiving housing (11), a drive (12) and a gear (13), wherein the drive (12), the gear (13) and the receiving housing (11) are arranged on or in the base body (10), and wherein the drive (12) is connected to the receiving housing (11) via the gear (13), and wherein the receiving housing (11) is designed to accommodate a door opener (9) or a screw-on piece, characterized by that the receiving housing (11) is arranged on the base body (10) so as to be rotatable about a rotation axis by means of the drive (12) or is moved linearly in the direction of the closed position by means of the drive (12).

2. Closing aid (1) according to claim 1, characterized by that the gear (13) has an eccentric (14), a spindle drive and / or a toggle lever (15) for rotating the receiving housing (11) about its axis of rotation (20).

3. Closing aid (1) according to claim 2, characterized by that the eccentric (14) has a control element which has a center point which is formed outside its axis of rotation.

4. Closing aid (1) according to claim 2 or 3, characterized by that the eccentric (14), preferably the control element, is connected via its rotational axis to the drive (12), preferably a drive axis (21), and cooperates with an eccentric outer surface (34) or an eccentric inner surface for rotating the receiving housing (11) with the receiving housing (11), preferably directly or via a lever arm (30) with the receiving housing (11).

5. Closing aid (1) according to one of claims 2 to 4, characterized by thatthe spindle drive has a spindle axis and a spindle nut, preferably that the spindle axis is connected to the drive (12) or is driven by the drive (12) or is designed as a drive axis of the drive (12), and that the spindle nut cooperates with the receiving housing (11) to rotate the receiving housing (11).

6. Closing aid (1) according to one of claims 2 to 5, characterized by that the gear is designed as a toggle lever gear (15) or has a toggle lever gear (15), the toggle lever gear (15) has a first arm (16) and a second arm (17), the first arm (16) being connected at one end to the drive (12), preferably a drive axle, and at its second end to the base body (10), and the second arm (17) being connected at one end to the first arm (16) and at its second end to the receiving housing (11) for rotating the receiving housing (11).

7. Closing aid (1) according to one of claims 2 to 6, characterized by that the toggle lever mechanism (15) has a play compensation.

8. Closing aid (1) according to one of claims 1 to 7, characterized by that the receiving housing (11) is designed as a hollow body for receiving the door opener (9) or the screw-on piece, preferably that fastening devices for the door opener (9) or the screw-on piece are formed in the receiving housing (11), preferably screw or plug connections.

9. Closing aid (1) according to one of claims 1 to 8, characterized by that the drive (12) is designed as a motor, preferably as an electric motor, preferably with a rotating drive axis (21) or as a linear drive.

10. Closing aid (1) according to one of claims 1 to 9, characterized by thatthe drive (12) is controlled via at least one sensor, in that a first sensor is arranged in the receiving housing (11), preferably in the door opener (9) or in the screw-on piece, for detecting the lock latch (6) or the bolt in the door opener (9) or the screw-on piece, preferably in order to start the drive (12).

11. Closing aid (1) according to one of claims 1 to 10, characterized by that a second sensor is formed in the closing aid (1) to detect the end position of the receiving housing (11), preferably to stop the drive (12).

12. Closing aid (1) according to one of claims 1 to 11, characterized by that a spring (31) between the gear (13) and the receiving housing (11) is designed as an elastic coupling.

13. Door arrangement comprising a door frame, a door and a closing aid (1) according to one of the preceding claims 1 to 12 arranged in the door frame.

14. Door arrangement according to claim 13, characterized by that the closing aid (1) pulls the door with a force between 45 N and 100 N.

15. Method for closing a door leaf (3), in particular a rotatable one, with a closing aid (1) arranged in a door frame (4), the closing aid (1) preferably comprising a drive (12), a base body (10), a receiving housing (11) and a gear (13), with the steps: i) transferring the door leaf (3) arranged movably in a door frame (4) into a closed position; ii) closing the door; characterized by thatin step ii) first the engagement of a lock latch (6) or a bolt in a door opener (9) or a screw-on piece arranged in a receiving housing (11) of the closing aid (1) is detected, and that subsequently in step ii) in order to close the door the receiving housing (11) is rotated about a rotation axis by means of the drive (12) or is moved towards the closed position by means of the drive (12).

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