EP3617432A1 - Closure device for a door - Google Patents

Abstract

The invention relates to a locking device for a door (2), in particular for a door of a caravan or a mobile home, with a movable locking element (3) which, in the closed position (S), engages in a locking counterpart (4) and the door (2) Pre-locked, the locking element (3) and the locking counterpart (4) being designed in such a way that they work together as a push-push locking, a blocking device (5) which, for the main locking of the door (2), causes a movement of the locking element (3) can block.

Description

The invention relates to a locking device for a door, in particular for a door of a caravan or a mobile home according to the preamble of claim 1. Furthermore, the invention relates to a door with a locking device.

The invention can be used in particular in the case of doors of caravans or mobile homes, which usually have a plurality of doors on the outside thereof, for example to lock stowage and service rooms. Luggage or camping utensils can sometimes be stored in the storage rooms and the service rooms can be used to hold gas bottles or water containers.

Because of the diverse use of such rooms, modern mobile homes and caravans in particular also have a whole series of doors of different sizes, which are correspondingly distributed over the outside, so that the visual effect of the caravans and mobile homes also depends in part on the design of the doors.

For the purposes of this application, the term “door” is understood quite generally to mean devices for closing an opening, in particular on the outside of a vehicle, that is also flaps, such as stowage flaps or service flaps, covers, hatches and the like. The term "door" not only includes the movable door leaf, but also the generally fixed door frame. If, however, a movement of the door is referred to below, this means only a movement of the door leaf and not a movement of the door frame.

In order to lock doors, it is known to provide locking devices on these in order to hold the doors or the door leaves in a closed position. For this purpose, locking devices usually have one or more locking elements and correspondingly configured locking counterparts, in which the locking elements can engage. One of the two elements is arranged on the door leaf and the corresponding other element on the door frame. In a closed position, movement of the two elements relative to one another is then prevented in such a way that the door is held in the closed position.

In particular, in areas where the optics and aerodynamics play an important role, doors that can be opened or closed via a push-push mechanism have been used more and more recently, since such doors on the outside of the door leaves do not have any handle elements for opening the door need more. With such push-push mechanisms the locking element and the locking counterpart are then designed such that they interact as a push-push lock.

To open as well as to close the door, it is sufficient to apply a pushing force, ie a "push", to the door leaf. When opening, this leads to the door leaf initially moving further in the closing direction before the door leaf springs back over the closed position when the force is removed and the door leaf then protrudes over the frame of the door and the door can be opened. To implement such a push-push mechanism, the locking element must be able to move when the door is opened and closed. A door that can be opened and closed via a corresponding locking device according to the push-push principle is, for example, in the EP 3 287 579 A1 described.

Since such doors can be opened very easily by means of a corresponding “push” and in this respect are only pre-locked in the closed position, however, the door can also be opened unintentionally comparatively easily. If such doors are arranged on the outside of a caravan and the caravan quickly enters a tunnel, it can happen, for example, that the door is blown by a sufficient amount of air to open the door.

Due to the possibility of simply opening such a door, it is necessary to secure it in the pre-locked closed position against unintentional opening. Although it is known to provide additional devices for the main locking of the door, such as sash locks or locking bolts, so that the door can no longer be opened unintentionally, however, it is associated with a comparatively great outlay In addition to the push-push lock, such additional devices must also be provided.

Proceeding from this, the object of the invention is to provide a locking device which itself enables the door to be securely locked in such a way that the door cannot be opened unintentionally.

This object is achieved in a closure device of the type mentioned at the outset by the features of patent claim 1.

The door can be securely locked by a blocking device, which can block a movement of the locking element, so that it can no longer be opened unintentionally. The blocking device is itself part of the locking device and acts on the locking element, so that in addition to the locking device, no additional elements are required. In order to secure the door accordingly, it must first be brought into the closed position by a "push". In this position, the door is initially in a pre-locked position and could be opened again by a further "push". In order to then lock the door at all so that it can no longer be opened, the blocking device can block a movement of the locking element. A further "push" on the door then no longer leads to the door being opened due to the blocking of the locking element. To open the door again, the blocking device must first release the locking element.

It has proven to be advantageous if the blocking device interacts with the locking element. The blocking device can interact directly or indirectly with the locking element and thus reliably prevent movement of the locking element.

Furthermore, the blocking device can form a structural unit with the locking element, which enables a compact design. In the case of locking devices which are secured against unintentional opening by means of an additional blocking device which is not associated with the locking device itself, such a compact design cannot be achieved.

It has proven to be advantageous if the locking counterpart has a guide for the locking element. The locking element can be guided in the guide and pass through the guide during a closing or opening process. The guide can be designed as a control curve, in particular as a cardiac tract, as is known from closure devices which operate according to the push-push principle. To produce a corresponding guide, it can be milled into the locking counterpart.

From a design point of view, it has proven to be advantageous if the locking counterpart is flat, for example in the form of a plate, so that it takes up very little space.

The locking counterpart can have fastening means, in particular recesses such as bores, via which it can be connected, for example with screws or bolts, to the door leaf or to the door frame. Such an attachment is characterized by a low installation effort.

With regard to the guidance in particular, it has proven to be advantageous if the locking counterpart has a locking area into which the locking element can engage when the door is moved in the closing direction. The blocking area can be designed in such a way that the door is pre-locked in this position, that is to say not by a tensile force can be opened. The blocking area can have a contour corresponding to the locking element, so that the locking element can rest against this contour of the blocking area.

Furthermore, it has proven to be advantageous, in particular with regard to the guidance, if the locking counterpart has a release area into which the locking element can engage when the door is moved out of the blocking area when the door is closing. When the locking element is in the release area, the door can be opened.

With regard to the opening process, it has proven to be advantageous if the locking element automatically falls out of the blocking area into the release area during a movement in the closing direction of the door. When the door moves in the closing direction, the locking element can independently leave the closing area and then move over the opening area into the release area.

Furthermore, it has proven to be advantageous if the locking counterpart has a closing area which is arranged between the release area and the blocking area and which is traversed by the locking element when the door moves in the closing direction. The closing area can be designed in such a way that the locking element is transferred from the release area into the blocking area. Furthermore, the closing area can have a run-up contour against which the locking element strikes when the door moves in the closing direction and is then transferred along the run-up contour from the closed area in the closed area.

Furthermore, it has proven to be advantageous if the locking counterpart has an opening area which is between the blocking area and the release area is arranged and is traversed by the locking element when the door leaf moves in the opening direction. In order to move the locking element from the blocking area into the opening area, this can first be moved by moving in the closing direction of the door, which leads to the locking element striking a stop and then being transferred from the locking position into the opening area. The locking element can pass through the opening area independently and then come to rest in the release area. The release area and the blocking area can be the areas in which the locking element rests when no force acts on the door. In the closed position of the door, the locking element can be in the blocking area and in a leaned position of the door in the release area. It is advantageous if the locking element does not rest in the opening and closing areas, but only passes through these areas.

From a design point of view, it has proven to be advantageous if the closing area has a run-on slope. A malfunction of the closure device can be avoided by means of this run-on slope. The run-up slope can be arranged in the end of the closing area facing the release area, so that the locking element has to pass through the start-up slope when it is transferred from the release area into the closing area. The opening area, which is also in direct contact with the release area, preferably does not have a run-on slope, but rather an edge which can prevent the locking element from being moved out of the release area into the opening area. In this respect, the chamfer ensures that the locking element always enters the closing area during a closing movement from the release position.

With regard to the movement of the locking element, it has also proven to be advantageous if it can be moved in the radial direction. A radial movement enables the locking element to be reliably guided in the guide when the door is being closed or opened. During a closing process or an opening process, the locking element can move in the radial direction in the guide. The locking element can pass through the different areas of the guide. The locking element can be biased in the radial direction and move against the force of a spring when the guide moves. It is particularly advantageous if the locking element can move both in the radial direction and in the axial direction. The locking element can be guided in a straight line both in the radial direction and in the axial direction.

Furthermore, it has proven to be advantageous if the closure device has a housing in which the locking element and the blocking device are mounted. By storing the locking element and the blocking device in a housing, a compact construction of the closing device can be realized. It is preferably a common housing. The blocking device and the locking element are advantageously arranged largely in the housing. The housing can have a recess through which a part of the locking element can extend and in this respect can protrude from the housing. This part can be a locking area of the locking element which is guided in the guide. The recess can be designed as an elongated hole in which the locking area of the locking element can move in the radial direction. The blocking device can be guided in the housing. It is advantageous if the blocking device and the locking device are mounted or guided on different, in particular on opposite sides, of the housing.

The locking element or the locking area of the locking element can be designed in the manner of a locking pin and have a cylindrical shape. This enables smooth movement of the locking area in the guide.

The housing can have a centering device for centering the locking counterpart. The centering device can be configured such that the locking counterpart is centered when the door is closed. The centering lock can be arranged on the side of the housing from which the locking area of the locking element protrudes.

It has also proven to be advantageous if the locking element is mounted in a movable slide. The storage in a carriage enables a reliable movement of the locking element in the radial direction. The carriage can be guided in the housing and the housing can have stops for limiting the movement of the carriage. The locking element can be mounted on the slide, in particular the slide has a guide in which the locking element is guided axially. It is advantageous if the locking element can move relative to the slide in the axial direction.

With regard to a blocking of the locking element, it has proven to be advantageous if the blocking device blocks the in particular radial movement of the locking element in the blocking position. By blocking the, in particular, radial movement of the locking element, it can no longer move in the recess in the housing and therefore also no longer in the guide. If the locking element is in the restricted area of the guide and on one radial movement is prevented, the door can no longer be opened and is securely locked.

With regard to the blocking of the movement of the locking element, it has turned out to be advantageous if the blocking device can engage in the slide to block the locking element and can prevent the slide from moving radially. By blocking the carriage movement, the locking element mounted on the carriage can also be blocked at the same time. The blocking device can engage in the manner of a locking bolt in the carriage and prevent it from moving in the blocking position. The carriage can have a recess or a recess, for example in the form of a bore or a blind hole, into which the blocking device can engage. It is advantageous if the bore is designed as an elongated hole, since manufacturing tolerances can also be compensated for by such a configuration. In the blocking position, there can be a positive connection between the blocking device and the slide. Since the blocking device cannot move in the radial direction relative to the housing, the slide is thus also prevented from corresponding radial movement. To block or to remove the blockage, the blocking device can move relative to the carriage. It is advantageous if this movement takes place orthogonally to the radial movement of the slide and parallel to the axial movement of the locking element.

In an alternative embodiment, it is possible for the blocking device to be arranged on the locking counterpart and to be retractable into the guide. In this embodiment, the blocking device can comprise a blocking element which can be extended in the manner of a blocking pin or a blocking wall. The blocking element can move the locking element from the blocking area into the opening area or into prevent the release area. Furthermore, two blocking elements can also be provided. If the locking element is in the blocking area of the guide, the two blocking elements can be inserted into the guide in such a way that the locking element can no longer move in the guide. By moving the blocking elements into the guide, the guide is thus closed and the locking element is thus prevented from moving radially.

The blocking device can be actuated by a drive, that is to say moved back and forth. The drive can be designed as an electric motor. The motor can be arranged in the same housing as the blocking device. The motor can be coupled to the central locking system of the vehicle if the locking device is used on a vehicle. The closure device can have a corresponding connection point for this. The motor can be coupled to the blocking device via a rotatable eccentric disk. Alternatively, however, other couplings between the motor and the blocking device are also possible, for example the motor and the blocking device can cooperate in the manner of a rack and pinion gear.

Furthermore, it has proven to be advantageous if the blocking device can be unlocked in an emergency. The blocking device can also be released by an emergency release if the drive is defective, for example, or the blocking device cannot be moved over it for another reason. The blocking device can have a corresponding emergency release for this. The blocking device can be moved manually from the blocking position via the emergency release, so that the locking element can thereby be released and this can then move radially again. The blocking device can be connected to a rope or a Bowden cable, via which the blocking device can be emergency unlocked, in particular manually.

Furthermore, it has proven to be advantageous if the blocking device for emergency unlocking can be moved out of the blocking position against the force of a spring element. The blocking device can be biased in the direction of the blocking position by the spring element. In the blocking position, the blocking device can be moved manually against the force of the spring independently of the function of the motor and can thus be unlocked in an emergency. As soon as the emergency release force no longer acts on the blocking device, it can move automatically into the blocking position again due to the spring force. It is advantageous if the blocking device can be unlocked from the inside of a vehicle.

Furthermore, it has proven to be advantageous if the closure device has a detection unit that can detect the position of the blocking device. The detection unit enables a statement to be made as to whether the blocking device is in the blocking position or not. The detection unit can be connected to a display which can indicate the status or the position of the blocking device. The detection unit can also detect the position of the locking element and coordinate this with the position of the blocking device. In particular, if the blocking device is designed such that it can be moved into the guide, collisions of the blocking elements and the locking element can be prevented. The detection unit can comprise one or more light barriers. In addition, the detection unit can also detect the position of the motor.

Furthermore, it has proven to be advantageous if the locking counterpart is arranged on a carrier and is movable to adjust the position of the locking counterpart relative to the carrier. The position of the locking counterpart relative to the locking element in the closed position can be adjusted by positioning the locking counterpart can be set. In this way it is possible to adjust the door so that the door leaf does not protrude over the frame of the door in the closed position. For example, when using the locking device for the door of a motorhome, it can be set so that the door does not protrude over the outer contour of the motorhome. Furthermore, the contact pressure of the door leaf in the closed position can also be set by adjusting the position of the locking counterpart.

Furthermore, a door with a locking device is proposed, the locking device being designed in the manner described above. The advantages already described with regard to the closure device result.

With regard to the arrangement of the locking device, it has proven to be advantageous if the locking element is arranged on the door frame and the locking counterpart on the door leaf. It is particularly advantageous if the locking element is arranged on the face of the door frame and the locking counterpart on the face of the door leaf. The locking element and the locking counterpart can be arranged on the door such that both elements are not visible from the outside when the door is closed.

Alternatively, it is also possible to arrange the locking element on the door leaf and the locking counterpart on the door frame.

Fig. 1

die Verschlussvorrichtung in einer perspektivischen Ansicht;

Fig. 2

das Gehäuse der Verschlussvorrichtung in einer Ansicht gemäß Fig. 1;

Fig. 3

das an einem Träger angeordnete Verrieglungsgegenstück;

Fig. 4

die Verschlussvorrichtung gemäß Fig. 1 ohne Abdeckung;

Fig. 5a

das an dem Träger angeordnete Verriegelungsgegenstück in einer oberen Stellung in einer perspektivischen Ansicht;

Fig. 5b

das Verriegelungsgegenstück gemäß Fig. 5a in einer Seitenansicht;

Fig. 6a

das an dem Träger angeordnete Verriegelungsgegenstück in einer unteren Stellung in einer perspektivischen Ansicht und in einer Seitenansicht;

Fig. 6b

das Verriegelungsgegenstück gemäß Fig. 6a in einer Seitenansicht;

Fig. 7

einen Querschnitt durch das Gehäuse der Verschlussvorrichtung

Fig. 8a

einen Querschnitt durch das Gehäuse der Verschlussvorrichtung, wobei das Verriegelungselement blockiert ist;

Fig. 8b

einen Längsschnitt durch das Gehäuse gemäß Fig. 8a;

Fig. 9a

einen Querschnitt durch das Gehäuse der Verschlussvorrichtung, wobei das Verriegelungselement nicht blockiert ist;

Fig. 9b

einen Längsschnitt durch das Gehäuse gemäß Fig. 9a;

Fig. 10a

einen Querschnitt durch das Gehäuse der Verschlussvorrichtung, wobei die Blockiervorrichtung notentriegelt ist;

Fig. 10b

einen Längsschnitt durch das Gehäuse gemäß Fig. 10a;

Fig. 11a

eine perspektivische Ansicht des Verriegelungsgegenstücks mit ausgefahrenen Blockierelementen;

Fig. 11b

eine perspektivische Ansicht des Verriegelungsgegenstücks mit eingefahrenen Blockierelementen;

Fig. 12

eine Draufsicht auf das Verriegelungsgegenstück gemäß der Fig. 11a und 11b.

Further details and advantages of the invention are described below with reference to the Figures 1 to 12 are explained in more detail. In it show:

Fig. 1

the closure device in a perspective view;

Fig. 2

the housing of the closure device in a view according to Fig. 1 ;

Fig. 3

the locking counterpart arranged on a carrier;

Fig. 4

the closure device according to Fig. 1 without cover;

Fig. 5a

the locking counterpart arranged on the carrier in an upper position in a perspective view;

Fig. 5b

the locking counterpart according to Fig. 5a in a side view;

Fig. 6a

the locking counterpart arranged on the carrier in a lower position in a perspective view and in a side view;

Fig. 6b

the locking counterpart according to Fig. 6a in a side view;

Fig. 7

a cross section through the housing of the closure device

Fig. 8a

a cross section through the housing of the closure device, wherein the locking element is blocked;

Fig. 8b

a longitudinal section through the housing Fig. 8a ;

Fig. 9a

a cross section through the housing of the closure device, wherein the locking element is not blocked;

Fig. 9b

a longitudinal section through the housing Fig. 9a ;

Fig. 10a

a cross section through the housing of the closure device, wherein the blocking device is emergency unlocked;

Fig. 10b

a longitudinal section through the housing Fig. 10a ;

Fig. 11a

a perspective view of the locking counterpart with extended blocking elements;

Fig. 11b

a perspective view of the locking counterpart with retracted blocking elements;

Fig. 12

a plan view of the locking counterpart according to the 11a and 11b ,

Motorhomes and caravans have various doors on the outside, which mostly serve to lock stowage or service rooms. For example, luggage, folding furniture or similar camping utensils can be arranged in the storage spaces. Service rooms can, for example, be used to hold gas bottles, waste water containers or the like. A large number of corresponding storage and service rooms and therefore therefore also a large number of corresponding doors are therefore often arranged on the outside of residential homes and caravans.

Due to the positive appearance and the aerodynamics, such doors have no handles on the outside to open or close them, but a push-push lock is used. Such a lock enables both the closing and opening of the door only a compressive force needs to be applied to the door for which no handles are required.

A closure device 1, which works according to the push-push principle, is in the Fig. 1 shown. For reasons of clarity, the door leaf 2.1 and the door frame are not shown. In this exemplary embodiment, however, the locking counterpart 4 is arranged on the door leaf side and the locking element 2 is arranged correspondingly on the frame side. The closing direction is in the Fig. 1 denoted by S, so that the locking counterpart 4 arranged on the door leaf 2.1 during a closing operation from below against that in the Fig. 2 locking element 3 starts up.

Like this in the Fig. 3 can be seen, the locking counterpart 4 has a guide 6 in the form of a heart curve, in which the locking element 3 moves when the door is closed or in which the locking element 3 is guided. During a closing movement, the locking element 3 moves back and forth in the recess 8.2 due to the course of the guide 6 in the radial direction R. This is discussed below with regard to the Fig. 12 to be explained in more detail.

At the front end of the housing 8, in which the locking element 3 is mounted, the housing 8 has two fin-like projections which serve as a centering device 9 and ensure that the locking counterpart 4 and thus also the door leaf 2.1 are centered when the door is closed.

In the Fig. 4 is the closure device 1, as in the Fig. 1 , shown in the position in which the door is closed. The locking counterpart 4 according to Fig. 3 was accordingly from below between the two centering devices 9 according to the Fig. 2 emotional. The representation of the Fig. 4 differs from the representation of the Fig. 1 only to the extent that that the cover 8.1 in the Fig. 4 is not shown. In the position according to Fig. 4 the door is closed and locked. It can be opened again in the closing direction S by a “push”, that is to say by a pressure force, on the door leaf 2.1.

In the 5a and 5b and 6a and 6b the locking counterpart 4 mounted on a door leaf 2.1 is shown in different positions. Since the position of the locking counterpart 4 relative to the locking element 3 in the closed position also defines the position of the door leaf 2.1 in the door frame, the position of the locking counterpart 4 can also be used to set the position of the door leaf 2.1 relative to the door frame in the closed position. For this purpose, the locking counterpart 4 is not connected directly to the door leaf 2.1, but rather is mounted on a carrier 7 which is connected to the door leaf 2.1. The carrier 7 has corresponding guides for the locking counterpart 4, in which the locking counterpart 4 can move relative to the carrier 7, as in FIG Fig. 6a can be seen. The locking counterpart 4 can thus also be moved relative to the door leaf 2.1 via the carrier 7.

In the 5a and 5b is the locking counterpart 4 in an upper maximum position and in the 6a and 6b shown in a lower maximum position.

Appropriate positioning can compensate for manufacturing and assembly tolerances, for example. Nevertheless, the contact pressure of the door or of the door leaf 2.1 can also be set in this way on a seal arranged in the door frame. The contact pressure would be significantly lower in the upper maximum position than in the lower maximum position.

The inner structure of the housing 8 and the mode of operation and the movement of the locking element 3 are now to be described with reference to FIG Fig. 7 be described before using the 8 to 10 the functioning of the blocking device 5 is explained in more detail, by means of which a movement of the locking element 3 can be blocked.

In the Fig. 7 is that in Fig. 2 shown housing 8 shown in a sectional view. A linearly movable slide 3.2 is arranged in the housing 8 and can be moved back and forth in the radial direction R. In the position shown, the carriage 3.2 is in an end position in which the carriage 3.2 rests against a stop of the housing 8. In this position it is therefore according to the orientation of the representation in Fig. 7 only possible to move the carriage 3.2 in the radial direction R upwards. The carriage 3.2 is in the in via a spring 5.2 Fig. 7 biased position shown. For the sake of clarity, this spring 5.2 is not shown in the figure, but it is located between the other stop of the housing 8 and the slide 3.2.

The locking element 3, which is movable in the axial direction A, is arranged in the slide 3.2. The carriage 3.2 has a corresponding guide 6 for the locking element 3, which enables axial movement. This guide 6 is also in the others 8a, 9a and 10a easy to see, since the locking element 3 is not shown in these. The locking element 3 is biased by a spring 3.1 and can be moved in the axial direction A against the spring force into the housing 8 or into the carriage 3.2. However, the dimensioning of the locking element 3 is such that a locking region 3.3 of the locking element 3, which is designed as a locking pin, always protrudes from the housing 8.

So that the locking region 3.3 protruding from the housing 8 can move in the radial direction R together with the slide 3.2, the housing 8 has a recess 8.2 designed as an elongated hole, which is also in the perspective view of FIG Fig. 2 is easy to see. The ends of this recess 8.2 form radial stops for the locking element 3 or for the protruding locking area 3.3 and limit the linear movement of the locking element 3 in the radial direction R. In a closing process, the locking area 3.3 of the locking element 3 dips into the locking counterpart 4 or into the guide 6 of the locking counterpart 4, as this with regard to 1 to 4 has already been explained. Because of the guide 6, the locking element 3 then moves back and forth together with the slide 3.2 in the radial direction R in the housing 8. Furthermore, due to the design of the guide 6, the locking element 2 also moves in the axial direction A, which with regard to the Fig. 12 will be explained in more detail.

In order to move the door leaf 2.1 relative to the door frame into the closed position or to open the door again accordingly, the locking element 2 must move in the radial direction R. By preventing movement in the radial direction R, the door can also be prevented from being opened unintentionally. In order to open a closed and thus main locked door again, the locking element 3 must first be released again before the door can then be opened via a "push".

Since a door that has been pre-locked in the closed position can be opened very easily using a "push", precautions must be taken to secure the door against unintentional opening, since in many situations such a simple door opening is not desired. For example, if a motorhome enters a tunnel at high speed, Because of the compressive forces acting on the outside of the motorhome, it can happen that doors arranged on the outside open automatically. In order to prevent such an unintentional opening, a blocking device 5, which interacts with the locking element 3, is provided, with which the door can be locked in the pre-locked position. The blocking device 5 is subsequently based on the 8 to 10 described, in which the blocking device 5 is shown in different positions. The in the 8a, 9a and 10a Cross sections shown correspond to the cross section of Fig. 7 in a slightly different cross-sectional height, which is why the blocking device 5 in the Fig. 7 is not so clearly recognizable. For the sake of clarity, the locking element 3 is in the 8a, 9a and 10a not shown, only the carriage 3.2.

In the 8a and 8b the blocking device 5 is shown in a blocking position in which the slide 3.2 and thus also the locking element 3 cannot be moved in the radial direction R. The blocking device 5 has a blocking element 5.1 designed in the manner of a locking bolt, which can engage in a recess 3.4 of the carriage 3.2 designed as a blind hole. Since the blocking device 5 or the blocking element 5.1 cannot be moved in the radial direction R, movement of the carriage 3.2 in the radial direction R is thus also blocked.

In order to release the carriage 3.2 again, the blocking element 5.1 must be pulled out of the carriage 3.2 again. A motor drive is provided for a corresponding actuation of the blocking device 5, which is not shown in the figures, however. The drive is connected to an external energy source via connection 8.3 and can be controlled accordingly. About the drive, the blocking element 5.1 between the in 8a and 8b blocking positions shown and in the 9a and 9b shown release positions, in which a movement of the carriage 3.2 is made possible to move linearly back and forth.

The blocking element 5.1 of the blocking device 5 is biased by a spring 5.2 in the direction of the blocking position. In order to transfer the blocking element 5.1 from the blocking position into the release position, it must be moved accordingly against the force of the spring 5.2. If the motor should fail and movement of the locking element 3 is blocked, the door can only be opened again when the blocking element 5.1 has been pulled out of the slide 3.2. So that the door can still be opened even if the motor has failed, the blocking device 5 has an emergency release 5.3, via which the carriage 3.2 can also be released again manually.

The emergency release 5.3 is connected to the blocking element 5.1. This can be used to move the blocking element 5.1 counter to the force of the spring 5.2 and to release the carriage 3.2 again. For this purpose, the emergency release 5.3 can be moved manually via a cable pull (not shown in the figures).

In an alternative embodiment, the blocking device 5 is not arranged in the housing 8, but in or on the locking counterpart 4. The corresponding locking counterpart 4 is in the 11a and 11b shown. If the locking element 3 or the locking area 3.3 guided in the guide 6 is in the blocking area 6.3 of the guide 6, the door cannot be opened by a pulling force, but only by a “push” in the closing direction S. In this embodiment, the blocking device 5 has two blocking elements 5.1, which can be inserted into the guide 6 to block a movement of the locking element 3. In the in the Fig. 11a blocking position shown is therefore a movement of the locking area 3.3 of the locking element 3 prevented due to the blocking elements 5.1 and the door can not be opened. In order to open the door again, the blocking elements 5.1 must release the guide 6 again, so that the locking element 3 can then move again in the guide 6.

The mode of operation of the push-push locking mechanism and the various areas of the guide 6 will now be explained in more detail below.

The locking counterpart 4 has a guide 6, in which the locking element 3 is guided during a relative movement between the door leaf 2.1 and the door frame. This guide 6 essentially consists of four different areas 6.1 to 6.4. According to the orientation of the Fig. 12 the release area 6.1 is arranged in the upper area of the guide 6. If the locking element 3 is in this release area 6.1, the door leaf 2.1 can be moved relative to the door frame. In this position, the door leaf 2.1 protrudes above the door frame, so that the door can be opened, for example, by a manual pulling movement or by the force of a spring that supports the opening of the door.

If a pressure force is applied to the door in this position, the locking element 3 can be transferred from the release area 6.1 into the closing area 6.2 via the run-up slope 6.5. The locking element 3 moves in the axial direction A.

The guide 6 also has a blocking area 6.3, in which the locking element 3 is arranged in a locking position. Furthermore, the guide 6 has an opening area 6.4, which connects the blocking area 6.3 to the release area 6.1.

In the open position, the locking element 3 is initially in the release area 6.1 of the locking counterpart 4. In this position, the door can be moved in the opening direction and thus opened. To close the door, it and thus the locking element 3 are inserted into the closing area 6.2 via the run-up slope 6.5. During this movement, the locking element 3 is moved in the recess 8.2. As soon as the locking element 3 has reached the lower end of the closing area 6.2, it moves further to the left into the blocking area 6.3 due to the spring 5.2 acting on the slide 3.2. Opening the door by a pulling force is no longer possible in this position. The bowl-shaped design of the contour of the guide 6 in the blocking area 6.3 ensures that the locking element 3 cannot move any further. The spring 5.2 acting on the slide 3.2 ensures that the locking element 3 or the locking area 3.3 according to the orientation of the Fig. 12 is pushed to the left.

If the door is to be opened again, a force in the closing direction S must be exerted on the locking element 3. A movement of the locking element 3 in the closing direction S will strike it from the blocking area 6.3 onto the outer, left contour of the opening area 6.4, so that the locking element 3 can then be transferred again into the release area 6.1 via the opening area 6.4. The areas 6.2 to 6.4 are higher than the area 6.1. This means that the locking element 3 cannot move from the release area 6.1 into the opening area 6.4 during a movement in the closing direction S, but rather is moved into the closing area 6.2 via the run-up slope 6.5. When the corresponding edge 6.6 is passed, the locking element 3 therefore moves in the axial direction A.

The design of the guide 6 and the functioning of the corresponding areas are admittedly shown in Fig. 12 in connection with a blocking device 5, which can be moved into the guide 6, but they are not restricted to this embodiment. Rather, it can with regard to Fig. 12 described design of the guide 6 can also be used when the blocking device 5 cooperates with the carriage 3.2.

Reference numerals :

1

Locking device

2.1

Door leaf

3

Locking element

3.1

feather

3.2

carriage

3.3

Locking area

3.4

deepening

4

Locking counterpart

4.1

Fasteners

5

Blocking device

5.1

Blocking element

5.2

feather

5.3

Emergency release

6

guide

6.1

Release area

6.2

Closing area

6.3

Restricted area

6.4

Opening area

6.5

Ramp

6.6

edge

7

carrier

8th

casing

8.1

cover

8.2

Recess

8.3

connection

9

Centering device

A

Axial direction

R

Radial direction

S

Closing direction

Claims (15)

Locking device for a door, in particular for a door of a caravan or a mobile home, with a movable locking element (3), which engages in a locking counterpart (4) in the closed position and pre-locks the door, the locking element (3) and the locking counterpart (4 ) are designed such that they interact as a push-push lock, characterized by
a blocking device (5) which can block a movement of the locking element (3) for the main locking of the door. Device according to claim 1, characterized in that the blocking device (5) forms a structural unit with the locking element (3). Device according to one of the preceding claims, characterized in that the locking counterpart (4) has a guide (6) for the locking element (3). Device according to one of the preceding claims, characterized in that the locking element (3) is movable in the axial direction (A). Device according to one of the preceding claims, characterized in that the locking element (3) is movable in the radial direction (R). Apparatus according to claim 5, characterized in that the blocking device (5) blocks a radial movement of the locking element (3) in the blocking position. Device according to one of the preceding claims, characterized by a housing (8) in which the locking element (3) and the blocking device (5) are mounted. Device according to one of the preceding claims, characterized in that the locking element (3) is mounted in a movable carriage (3.2). Device according to claim 8, characterized in that the blocking device (5) for blocking the locking element (3) can engage in the slide (3.2) and prevent it from moving. Device according to one of claims 3 to 6, characterized in that the blocking device (5) is arranged on the locking counterpart (4) and can be moved into the guide (6). Device according to one of the preceding claims, characterized in that the blocking device (5) is emergency unlockable. Apparatus according to claim 11, characterized in that the blocking device (5) for emergency release against the force of a spring element is movable from the blocking position. Device according to one of the preceding claims, characterized in that the locking counterpart (4) is arranged on a carrier (7) and is movable to adjust the position of the locking counterpart (4) relative to the carrier (7). Door with a locking device (1) according to one of the preceding claims. Door according to claim 14, characterized in that the locking element (3) on the door frame and the locking counterpart (4) on the door leaf (2.1) are arranged.

Images