CLOSING DEVICE

Abstract

The invention relates to a locking device (10) for locking a door, in particular a door of a caravan or motorhome, against a door frame, with at least two bolt latches (1), each of which has a bolt slide (1.1) biased by a spring (4) in the direction of a locking position (V) and automatically locking, and with an actuating element (3) which is coupled to the bolt slides (1.1) for unlocking the bolt latches (1), wherein the actuating element (3) has a locking indicator (3.2) and the bolt latches (1) are each mechanically coupled to the actuating element (3) to indicate correct locking of the bolt slides (1.1) by means of the locking indicator (3.2).

Description

[0001] The invention relates to a locking device for locking a door, in particular a door of a caravan or mobile home, against a door frame with at least two locking latches, each having a locking slide that is pre-tensioned by a spring in the direction of a locking position and automatically locking, and with an actuating element that is coupled to the locking slides for unlocking the locking latches.

[0002] Corresponding locking devices can be used in various technical fields. One possible application is the doors of a caravan or motorhome. These doors usually have to be locked to a door frame at several locking points to ensure that the sometimes large doors are reliably locked and that the seal arranged between the door and the door frame can be reliably compressed. Accordingly, corresponding locking devices often also have several deadbolts arranged one below the other on the inside of the door in the area of ​​the door edge opposite the door hinges so that the door can be reliably locked to the door frame across its entire height. In practice, at least two deadbolts are used, one in the upper area and the other in the lower area of ​​the door.A door does not necessarily have to be a door in the true sense of the word, but also flaps, in particular storage flaps, hatches, lids or windows are grouped under the term door.

[0003] The deadbolts each have a movable locking slide, particularly in a linear direction, which can be moved back and forth between a locking position and an unlocking position. In the locking position, the locking slide can engage behind the door frame and thus secure the door relative to the door frame. In the unlocking position, the locking slides are retracted so that they no longer engage behind the door frame, allowing the door to be opened. Furthermore, it is known to pre-tension the locking slides of the deadbolts into the locking position; for this purpose, each deadbolt can be equipped with a spring.

[0004] When an open door is to be closed and locked, the pre-tensioning of the locking slides in the locked position eliminates the need to actively move them to the unlocked position. Instead, the locking slides automatically come into contact with the door frame when the door is closed and are then moved toward the unlocked position by the frame, counter to the force of the spring.

[0005] Once the door is closed far enough that the locking slides have passed the door frame, they automatically return to the locked position, driven by the spring, and engage behind the door frame, locking the door accordingly. The locking device thus enables automatic locking of the door. To lock the door, simply close it or slam it shut with a certain amount of force, depending on the spring's preload. Active operation of the locking latches or locking slides is not required.

[0006] To reopen a locked door, it is first necessary to unlock all deadbolts and move the respective locking slides into the unlocked position. To move the locking slides accordingly, they are coupled to a common actuating element, which is usually accessible from the outside of the door. By moving the actuating element, the locking slides can then be moved in unison toward the unlocked position. Once the locking slides are retracted far enough so that they no longer engage behind the door frame, the door can be opened.

[0007] Although corresponding locking devices have proven themselves in practice, it can happen, especially with large or tall doors, that when the door is closed, not all of the locking slides reliably engage behind the frame and the door is therefore not locked at all points, even after the door has been slammed firmly. In such a case, it may be necessary to press the door against the frame in the area of ​​the unlocked deadbolt so that the locking slide of the unlocked deadbolt also engages in or behind the frame. Although the door can be reliably locked by pressing it this way, it is not always immediately apparent from the outside whether the door is reliably locked and all of the locking slides engage behind the frame or whether the door needs to be pushed further.Especially when it is already dark, it can happen that an unlocked deadbolt remains undetected, especially in the case of caravan and motorhome doors, and it is mistakenly assumed that the door is reliably locked at all locking points.

[0008] The invention is based on the Aufgabe, to specify a locking device that ensures reliable locking of the door.

[0009] This object is achieved in a locking device of the type mentioned above in that the actuating element has a locking indicator and the locking latches are each mechanically coupled to the actuating element by means of the locking indicator to indicate correct locking of the locking slides.

[0010] The locking indicator makes it very easy to determine whether all deadbolts are in the locked position and, accordingly, whether all deadbolts are reliably engaging behind the door frame to lock the door. This makes it easy to determine at a glance whether the door needs to be pushed in further or whether the door is already securely locked at all locking points.

[0011] The coupling between the operating element and the locking latches or the locking slides is therefore bidirectional in nature. This means that it is not only possible to move the locking slides into the unlocked position via the operating element, but that a movement of the locking slides also leads to a movement of the operating element. When the door is closed, the locking slides are moved by the door frame against the force of the spring towards the unlocked position and thus also the operating element. This movement of the locking slides towards the unlocked position can therefore be detected on the operating element. When the locking slides then engage behind the frame and jump back into the locked position, the operating element also moves accordingly. The bidirectional coupling of the locking latches or the locking slidesThe position of the locking slide and the actuating element can thus be used to directly determine the position of the locking slide and to determine at a glance whether the door is reliably locked or not.

[0012] Furthermore, it has proven advantageous if the actuating element is bidirectionally coupled to the or all of the locking slides. Such coupling does not make it possible to move the locking slides independently of the actuating element. Rather, the actuating element can be coupled to the locking slides both in the direction of the locking position and in the direction of the unlocking position. Since, when the door is closed, the locking slides are first pressed by the frame towards the unlocking position and then spring back towards the locking position by the spring, both movements also result in a movement of the actuating element and it is not possible to move the locking slides or the actuating element independently of one another. The actuating element and the locking slides can therefore be forcibly coupled to one another. Minor relative movements, e.g.due to tolerances or a certain amount of play between the components are of course possible.

[0013] Similar to the locking latches or locking slides, the actuating element can also be movable back and forth between a locking position and an unlocking position, in particular, can be rotated back and forth. The coupling between the actuating element and the locking latches or

[0014] With locking slides, both a movement of the actuating element directly leads to a corresponding movement of the locking slide, and a movement of the locking slide leads to a corresponding movement of the actuating element. A rotating movement of the actuating element allows intuitive unlocking of the locking latches, similar to a latch or knob operation. To move the actuating element accordingly, it can have an actuating handle, which can be used to move the actuating element manually, in particular to rotate it back and forth.

[0015] Furthermore, it has proven advantageous if the actuating element is pre-tensioned into the locking position by the springs of the locking latches. Due to the positive coupling of the locking latches or the locking slides with the actuating element, the actuating element can be pre-tensioned into the locking position by the springs of the locking slides. Thus, if the actuating element is manually moved from the locking position to the unlocking position, it can automatically return to the locking position after being released. Therefore, it is not necessary for the actuating element itself to be pre-tensioned by its own pre-tensioning element or spring.

[0016] With regard to the actuating element, it has further proven advantageous if the locking indicator has an indicator surface that is only visible in the unlocked position. The indicator surface can provide visual feedback on the position of the actuating element and thus also on the locking state of the locking latches. The indicator surface can therefore be visible when at least one locking slide is not in the locking position, so that the indicator surface can be used to directly detect when the door is not locked or is not yet correctly locked. The indicator surface can have a signal color so that an incorrect locking state cannot be overlooked. The locking indicator can have a fixed section and a rotatable section, whereby the rotatable section can be rotated using the actuating handle.The indicator surface can be part of the fixed section so that it can be released and thus identified when the rotatable section is rotated into the unlocked position. In the locked position, the indicator surface can be covered by the rotatable section. In order to cover or identify the corresponding surface depending on the position, the rotatable section or the actuating handle can have an asymmetrical geometry. Furthermore, the indicator surface can be arranged on a ring that is only visible in the unlocked position. For example, the ring can protrude outwards in the unlocked position so that a lateral surface designed as an indicator surface becomes visible.

[0017] According to an advantageous development of the invention, it is proposed that the actuating element have a locking device, in particular a locking device in the manner of a locking cylinder. The locking device can prevent movement of the actuating element and, due to the positive coupling, also prevent movement of the locking slide. To move the actuating element, it is therefore necessary to first ensure that movement is not blocked by the locking device. The locking device can be locked or unlocked using a suitable key. The locking device can be integrated into the actuating handle and thus be accessible from the outside.

[0018] Furthermore, it has proven advantageous for the actuating element to have a rotatable actuating shaft. The actuating shaft can extend through the door, allowing movements, particularly rotational movements, on the outside of the door to be transmitted via the shaft to the inside of the door. The actuating shaft can thus be rotationally coupled to the actuating handle.

[0019] To connect the actuating element to the deadbolts, it has proven advantageous if the actuating element has several connection points, each connecting to a deadbolt. Rotation can be transmitted via the actuating shaft to the connection points, which can also rotate around the axis of rotation of the actuating shaft. The connection points can be rotationally coupled to the actuating handle via the actuating shaft.

[0020] It has also proven advantageous if the deadbolts are motion-coupled to one another via the actuating element. By coupling the deadbolts to one another, the locking slides of the deadbolts move in parallel with one another and there is no relative movement. In this respect, one can also speak of a positive coupling. It is not possible for the actuating element of one deadbolt to be moved into the locking position if another deadbolt is still in the unlocked position. A deadbolt slide in the unlocked position, which, for example, has not completely engaged behind the door frame and is therefore pushed in by the door frame, instead blocks the other deadbolt slide(s) and prevents them from being automatically moved into the locking position by the spring and engaging behind the frame.

[0021] With regard to the coupling of the deadbolts to the actuating element, it has proven advantageous if the deadbolts are each coupled to the actuating element via a coupling device. The coupling device can transmit the movement of the actuating element or the actuating handle, the actuating shaft, and the connection points to the deadbolt slides. At the same time, the coupling device can also transmit movement in the opposite direction, i.e., from the deadbolt slides to the connection points and via the actuating shaft to the actuating handle. Each deadbolt can be assigned a coupling device, so that the number of deadbolts and the number of coupling devices can match. This enables a reliable movement coupling between the various deadbolt slides and the common actuating element.

[0022] It can be provided that the actuating element is directly coupled to a deadbolt via a coupling device. This means that the coupling device is coupled at one end to the actuating element and at the other end to the deadbolt. Furthermore, it can also be possible for the actuating element to be indirectly coupled to a deadbolt. This can be the case if the actuating element is directly coupled to a deadbolt and this deadbolt is then coupled to another deadbolt via a further coupling device. The deadbolts can therefore also be connected in series and it is not absolutely necessary for all deadbolts to be directly coupled to the actuating element. Such a configuration is particularly advantageous if more than two deadbolts are provided. This can be particularly the case with very high doors.However, due to the coupling of the deadbolts and the actuating element, the locking slides of all deadbolts can move in the same direction and therefore without any significant relative movement, regardless of whether the deadbolt is directly or indirectly coupled to the actuating element.

[0023] From a design perspective, it is proposed that the coupling device be designed as a rod coupling. This design allows the distance between the locking latches and the actuation to be comparatively large, which offers correspondingly great design flexibility with regard to the arrangement of the locking latches and the actuation element. Specifically, the actuation element can be arranged on the door, for example at a medium height, and two locking latches can be provided, for example, which can be arranged at the same distance from the actuation element above and below the actuation element. A large distance between the locking latches ensures reliable locking of the door across its entire height. Furthermore, a rod coupling has proven to be reliable and robust in practice, which is particularly advantageous for mobile home and caravan doors.

[0024] Furthermore, it has proven advantageous if the coupling device has a coupling rod. The coupling rod can be coupled on one side to the actuating element, in particular to a connection point, and on the other side to the locking slide. There can be a separate connection point for each coupling rod or for each coupling device. In the case of two coupling devices, the two connection points of the actuating element can be opposite one another with regard to the axis of rotation. The coupling rod can be pivotally hinged to the connection points so that the coupling rods can move in the longitudinal direction of the rod, for example upwards or downwards, when the actuating element rotates. The coupling rods can extend essentially in the vertical direction or in the direction of the main extension direction of the door.The primarily linear movement of the coupling rod can be redirected into a linear vertical movement of the locking slides in the area of ​​the locking slides.

[0025] In the case of an indirect coupling of a deadbolt with the actuating element, i.e. a coupling via an intermediate deadbolt, the coupling rod can be coupled to a deadbolt slide on both sides so that the movement of one deadbolt slide can be transferred to the other deadbolt slide.

[0026] With regard to the locking latch, it has proven advantageous if it has a locking housing in which the locking slide is guided. The locking housing can thus serve as a linear guide and ensure that the locking slide can be reliably moved back and forth between the locking position and the unlocking position. The locking housing can have a lateral opening so that the locking slide can protrude from the locking housing, at least with its locking area that engages behind the frame. The locking housing can have a recess so that the coupling device or the coupling rod can extend into the interior of the locking housing and move the locking slide. Furthermore, several recesses can also be provided so that the coupling rod can be connected to different linkage eyes. This is particularly advantageous in a series connection or an indirect coupling.Overall, the bolt housing can be box-shaped and located on the inside of the door. Alternatively, it is also possible for the bolt housing to be located inside the door and thus integrated into the door.

[0027] Furthermore, it has proven advantageous with regard to the deadbolt if it has an actuation for moving the deadbolt slide. The actuation can represent an alternative actuation or movement option for the deadbolt slide, so that it can be moved not only via the actuating element. The deadbolt slide can also be actuated from the inside of the door or from inside the caravan or mobile home. The actuation can have a rotary handle, via which a coupling element can be rotated, which is described in more detail below and is coupled to the deadbolt slide for linear movement. By coupling a deadbolt slide with the other deadbolt slides or with the actuation element, all the deadbolt slides and also the actuation element can be moved accordingly via the actuation.

[0028] The locking slide can have a locking area that can engage behind the door frame in the locked position. This locking area can be equipped with a starting bevel so that the locking slide can automatically deflect when the door is closed and contact is made with the door frame and can be moved towards the unlocked position against the force of the spring. Therefore, it is not necessary to manually move the locking slide to the unlocked position to close and lock the door. Instead, when the door is closed, the locking slides are automatically moved to the unlocked position by the starting bevel. The actuating element or the actuating handle visible from the outside can rotate accordingly.

[0029] With regard to the design of the coupling device, it has proven advantageous if it has a coupling element that is coupled to the coupling rod and the locking slide. Via the coupling element, a linear movement of the coupling rod, in particular a movement in the horizontal direction, can be converted into a linear movement of the locking slide, in particular a movement in the vertical direction. Furthermore, the coupling element can ensure not only a movement of the actuating element onto the locking slide, but also a movement in the opposite direction, namely from the locking slide via the coupling element and the coupling rod onto the actuating element.

[0030] With regard to the coupling element, it has also proven advantageous if the locking slide is coupled to the coupling element in such a way that it can be moved in a linear direction via a rotational movement of the coupling element. The coupling element can thus be rotatable. Accordingly, a linear movement of the locking slide can lead to a rotational movement of the coupling element, which in turn can be redirected into a linear movement of the coupling rod.

[0031] With regard to the design of the coupling element, it has proven advantageous if it has two coupling projections and if the locking slide has a driver arranged between the two coupling projections. The locking slide and the coupling device or the coupling element can be coupled to one another via the two coupling projections and the driver. The coupling projections can extend in the axial direction and be designed to project in the direction of the locking slide. When the actuating element is moved, the driver can be moved by one of the two coupling projections into the locking position or into the unlocking position, depending on the direction of rotation of the actuating element or the actuating handle.If the locking slide itself is moved, for example, by contact with the door frame when closing the door, the locking slide can rotate the coupling element via the driver and via contact between the driver and one of the two coupling projections, thereby also moving the actuating element into the respective position. When moving toward the unlocked position, the driver can come into contact with one of the two coupling projections, and when moving toward the locked position, it can come into contact with the other coupling projection.

[0032] With regard to the design of the coupling projections, it has proven advantageous if the first coupling projection is designed as a coupling nose projecting in the axial direction. The second coupling projection can be designed, in particular, as a sickle-shaped guide hook. When the locking slide moves from the locking position into the unlocking position, the driver can come into contact with the second coupling projection and thereby rotate the coupling element. When the locking slide moves from the unlocking position into the locking position, in particular due to the spring, the driver can come into contact with the first coupling projection and thereby rotate the coupling element in the opposite direction. By designing it as a guide hook, it is achieved that the driver, during a linear movement,can slide off the corresponding coupling projection, which leads to a smooth and low-impact rotation of the coupling element.

[0033] Furthermore, it has proven advantageous for the coupling element to be designed as a coupling ring. This design allows for easy back-and-forth rotation around the rotation axis.

[0034] It is advantageous if the guide hook protrudes radially from the coupling element or the contour of the coupling ring. This also leads to a smooth rotation of the coupling element and to the driver sliding on the coupling projection. The guide hook advantageously protrudes outward from the coupling ring or the contour of the coupling ring, which allows for a comparatively large angle of rotation. It is advantageous if the coupling ring must be rotated approximately 45 degrees to move the locking slide back and forth between the locking and unlocking positions.

[0035] Furthermore, the corresponding coupling projection or guide hook can be designed such that, in the unlocked position, it prevents movement of the locking slide in at least one direction. In this respect, it is not possible to move the locking slide beyond the unlocked position; instead, movement beyond the unlocked position can be prevented by the guide hook. From the unlocked position, the locking slide can thus only be moved back toward the locked position.

[0036] To connect the coupling element to the coupling rod, the latter may have a linkage eyelet. The linkage eyelet may be designed to protrude radially and thus be at a comparatively large distance from the axis of rotation extending centrally through the coupling ring. This allows the coupling ring to be reliably rotated back and forth during a linear movement of the coupling rod. The coupling rod may be rotatably connected to the linkage eyelet. In particular, the coupling rod is hooked into the linkage eyelet at one end. Furthermore, it has proven advantageous to provide several, in particular two, linkage eyes. Two linkage eyes may be located opposite one another with respect to the axis of rotation and thus also be arranged on opposite sides of the coupling element.This design makes it possible, on the one hand, to use the same coupling element in different installation situations, with the appropriate linkage eyelet being used depending on the installation situation. Furthermore, the multiple linkage eyes also mean that the corresponding locking latch can be coupled not only to the actuating element via one coupling device, but also to another locking slide via a further coupling device. For this purpose, for example, one connection eyelet can be coupled to the actuating element via a coupling rod, and the other connection eyelet can be coupled to the coupling element or the connection eyelet of another locking latch via a further coupling rod. The locking slides of the two locking slides can then move in the same direction and be moved back and forth together between the locked position and the unlocked position.This basically corresponds to a series connection of the two locking slides.

[0037] Furthermore, it has proven advantageous if the coupling element is rotatably mounted in the locking housing. The locking housing can be fixedly mounted on the door, particularly on the inside of the door, thus ensuring reliable rotational movement of the coupling element or the coupling ring. The locking housing can have a bearing projection on which the coupling element can be rotatably mounted. Furthermore, in addition to such a plain bearing, a bearing via a rolling bearing can also be provided.

[0038] Furthermore, the locking housing can be provided with stops to limit the movement of the coupling element. The corresponding stops can limit the movement of the coupling element such that the locking slide can only move back and forth between the locking position and the unlocking position. Alternatively, the stops can also be arranged on the locking slide side, so that any movement of the locking slide is immediately prevented. The movement coupling between the locking slide and the coupling element then prevents any further movement of the coupling element.

[0039] Furthermore, with a suitable design of the coupling projections and the driver, corresponding stops can be omitted. This is due to the fact that the linearly movable driver and the rotatable coupling projections can only be moved within a certain range due to their coupling. Advantageously, the coupling element, and thus especially the coupling projections, can be rotated by approximately 45 degrees. Therefore, the actuating element must also be rotated by approximately 45 degrees to move the locking slides from the locked position to the unlocked position.

[0040] With regard to the coupling of the actuating element and the locking latch, it has proven advantageous if a tensile force is exerted on the coupling rod when the actuating element moves from the locked position to the unlocked position. The coupling rod can be pulled toward the actuating element by a corresponding movement, whereby the coupling element or coupling ring can be rotated and the locking slide can be retracted into the locking latch or into the locking housing. Once the locking slide is retracted sufficiently so that it no longer engages behind the door frame, the door can be opened.

[0041] Furthermore, it can be provided that the locking latch or latches are coupled to the actuating element in such a way that a compressive force is exerted on the coupling rod when the locking slide moves from the locking position to the unlocking position. When the door is closed and the locking slides are pressed in by contact with the door frame, a compressive force can be applied to the coupling rod by the locking slide(s), so that these can essentially be moved in the direction of the actuating element. The coupling rod or rods can therefore rotate or press the actuating element about its actuating axis into the unlocking position by means of a compressive force emanating from the locking slides. In the unlocking position, the indicator surface of the locking indicator can then be seen, so that it is clear that the locking slide(s) are in the unlocking position.

[0042] Furthermore, with regard to the object mentioned above, a door for a caravan or motorhome with a locking device is proposed, wherein the locking device is designed as described above. This results in the advantages already described with regard to the locking device. The door can be, for example, an entrance door of the caravan or motorhome, but can also be a storage flap, a hatch, or a window.

[0043] With regard to the door, it has proven advantageous if the operating element is accessible from the outside of the door and the deadbolts are arranged on the inside of the door. The operating shaft of the operating element can therefore extend through the door, and by actuating the operating handle on the outside of the door, the deadbolts arranged on the inside can engage behind the door frame to lock the door. The inside of the door does not necessarily mean the innermost surface of the door, but the door can also have an additional panel on the inside so that the mechanism or coupling devices are not immediately visible. Furthermore, the deadbolts and the coupling device can also be arranged inside the door, depending on how thick the door is.

[0044] Further advantages and details of the invention will be explained in more detail below using an exemplary embodiment. In the following: Fig. 1a to 1e a locking device in a locking position in different views; Fig. 2a to 2e the locking device according to Fig. 1 in an unlocking position in different views; Fig. 3a, 3b an exploded view of a locking latch.

[0045] To lock the door of a caravan or motorhome against a door frame, the lock shown in the illustration of the Fig. 1a illustrated locking device 10. The locking device 10 essentially consists of three elements, namely two locking latches 1 and an actuating element 3 arranged between the two locking latches 1. The actuating element 3 is coupled to one of the two locking latches 1 via a coupling device 2 and can be rotated back and forth by hand about an actuating axis of rotation between a locking position VB and an unlocking position VE via an actuating handle 3.5. By rotating the actuating element 3 or the actuating handle 3.5, the locking slides 1.1 of the locking latches 1 can be moved back and forth in a linear direction between a locking position V and an unlocking position E. When the actuating element 3 is in the locking position VB, the locking slides 1.1 of the locking latches 1 are also in the locking position V.The same applies to the unlocking positions E, VE.

[0046] The locking slides 1.1 are connected to the Fig. 1d und 1e shown spring 4 is preloaded in its locking position V, so that an active movement of the locking slide 1.1 into the locking position V via the actuating element 3 is not necessary. Rather, the coupling between the locking latches 1 and the actuating element 3 ensures that the actuating element 3 is also preloaded into the locking position VB via the springs 4.

[0047] When the door is opened, the locking slides 1.1 of the locking latches 1 are now initially in the locking position V due to the spring preload, without any further force being applied, meaning they protrude laterally from the door. Similarly, the actuating element 3 is also in the locking position VB.

[0048] When the door is now closed, the locking slides 1.1, which are still in the locking position V, come into contact with the door frame. At their outer ends, the locking slides 1.1 are equipped with a locking area 1.12 designed like a ramp, which can be clearly seen, for example, in the illustration in Figure 1a. When this locking area 1.12 comes into contact with the frame, it ensures that the locking slides 1.1 are automatically moved against the force of the spring 4 in the direction of the unlocking position E when the door is closed via the stationary frame. Due to the movement of the locking slides 1.1, the actuating element 3 is also rotated from the locking position VB to the unlocking position EB.

[0049] As soon as the door is closed far enough that the locking slides 1.1 have passed the frame, they automatically engage behind the door frame in the locking position V due to the pre-tensioning force of the springs 4. The locking slides 1.1 or the locking latches 1 connected to the door then ensure that the door can no longer be opened due to this rear engagement. Due to the spring pre-tensioning force, it is not necessary to actively move the locking slides 1.1 into the locking position V; rather, it is basically sufficient if the door is slammed or slammed shut with a certain force, so that the locking slides 1.1 are moved by the frame against the force of the spring 4. During the spring-driven transfer of the locking slides 1.1 from the unlocked position E back to the locking position V, the actuating element 3 then also rotates automatically back to the locking position VB.

[0050] To open the door again, the locking slides 1.1 must first be moved back into the unlocking position E against the force of the spring 4, in which they no longer engage behind the door frame. For this purpose, the actuating handle 3.5 of the actuating element 3 can be moved as shown in the Fig. 1c and 2cturned counterclockwise. This rotary movement is passed on via the two coupling devices 2 to the two locking latches 1 or to the corresponding locking slides 1.1 and results in the locking slides 1.1 being retracted in the same direction. As soon as the locking slides 1.1 have been retracted far enough that they no longer engage behind the frame, the locking slides 1.1 have reached the unlocking position E and the door can then be opened, with the locking slides 1.1 being guided past the door frame. Once the locking slides 1.1 have passed the door frame, the actuating element 3 or the actuating handle 3.5 can be released again and, thanks to the springs 4, the locking slides 1.1 jump back to the locking position V and the actuating element 3 back to the locking position VB.

[0051] As is the case, for example, in the presentation of the Fig. 1b As can be seen, the actuating element 3 or the actuating handle 3.5 has a locking device 3.4 in the manner of a locking cylinder. This locking device 3.4 can prevent movement of the actuating handle 3.5 from the locking position VB to the unlocking position VE, so that the door can be secured in its closed position against unwanted or unauthorized unlocking and opening via the locking device 3.4. Due to the positive coupling between the actuating element 3 and the locking slides 1.1, which is described in more detail below, the locking device 3.4 can also prevent movement of the locking slides 1.1.

[0052] As can be seen, for example, from the illustrations in the Fig. 2b and 2cAs can be seen, the actuating element 3 further comprises a locking indicator 3.2. This locking indicator 3.2 has an indicator surface that is only visible when the actuating element 3 is in the unlocking position EB, in order to signal that the locking slides 1.1 of the locking latches 1 are then also in the unlocking position E and the door is not locked. To ensure that it can be seen at first glance that the door is not properly locked, the indicator surface 3.2 has a signal color. If the signal color is therefore visible, the actuating element 3 and thus also the locking latches 1 are not in the locking position V, VB.

[0053] When the door is closed, the two locking slides 1.1 are first moved in the manner described above through the door frame from the extended locking position V towards the oppositely retracted unlocking position E. Due to the movement coupling between the locking latches 1 or the locking slides 1.1 and the actuating element 3, the actuating handle 3.5 then also moves, so that the indicator surface 3.2 becomes visible and it is evident that the locking slides 1.1 of the locking latches 1 are in the unlocking position E.

[0054] If the door is closed and the locking slides 1.1 engage behind the door frame, the actuating element 3 is rotated back into the locking position VB by the pretensioning force of the springs 4, so that the indicator surface is no longer visible. Since the two locking latches 1 are bidirectionally coupled to the actuating element 3, the locking latches 1 are also bidirectionally coupled to each other. A movement of the locking slide 1.1 of one locking latch 1 therefore automatically leads to a movement of the other locking slides 1.1. It is therefore not possible to move the locking slides 1.1 or the actuating element 3 independently of each other.

[0055] This also means that even if one of the two locking slides 1.1 could engage behind the frame to lock the door, a corresponding movement is prevented if the other locking slide 1.1 cannot be moved accordingly. Especially with larger doors, it can happen, for example due to manufacturing or assembly tolerances or even due to slight warping of the door or frame, that when the door is closed, not all locking slides 1.1 engage behind the door frame, but rather one locking slide 1.1, for example, is still pressed in by the door frame. Since this locking slide 1.1 is then not in the locking position V, this locking slide 1.1 also prevents the usual locking slides 1.1 from moving into the locking position V and thus also a corresponding movement of the actuating element 3. Accordingly, the locking indicator 3.2 signals that the locking slides 1.1 are not properly locked.However, if the door is pushed further in the area of ​​the latch 1 of the not yet correctly positioned locking slide 1.1, this locking slide 1.1 can also engage behind the frame. Due to the pretension of the spring 4, all locking slides 1.1 then move simultaneously into the locking position V.

[0056] The individual components of the locking device 10 will now be discussed in more detail. First, the design of the locking latches 1 will be described, in particular with reference to the Fig. 1d, 1e as well as 2d, 2e and 3a, 3b. The locking latches 1 have a box-shaped locking housing 1.2 in which the locking slide 1.1 is mounted so as to be movable in a linear direction. The control housings 1.2 have a lateral opening, which can be used, for example, in the Fig. 3b can be clearly seen, and from which the end of the locking slide 1.1 having the locking area 1.12 protrudes in the locking position V. The spring 4 is coupled on one side to the locking slide 1.1 and on the other side to the locking housing 1.2, so that the locking slide 1.1 can be moved relative to the locking housing 1.2 under the action of the spring 4.

[0057] The locking slides 1.1 are overall of elongated geometry and have a driver 1.11 in the lower area, which interacts with the coupling device 2 in order to ensure a movement coupling between the locking slide 1.1 and the actuating element 3 in both directions.

[0058] The coupling device 2 essentially consists of an elongated coupling rod 2.1 and a coupling element 2.2 arranged at the latch-side end of the coupling rod 2.1, which coupling element is designed as a coupling ring. The coupling element 2.2 is mounted in the latch housing 1.2 so as to be rotatable about a rotation axis extending in the normal direction to the door plane. For mounting the coupling element 2.2, the latch housing 1.2 has a bearing projection 1.21 designed in the manner of a projecting pin, which in the illustration of the Fig. 3b can be seen. Due to the rotatable mounting of the coupling element 2.2 in the locking housing 1.2, the latter can be rotated back and forth around the rotation axis by a substantially vertical movement of the coupling rod 2.1. To connect the coupling element 2.2 with the coupling rod 2.1, the coupling element 2.2 has a linkage eyelet 2.21, which is shown in the illustration of the Fig. 3a und 3b can be seen and into which the coupling rod 2.1 can pivotably engage. To enable the coupling element 2.2 to be used in other installation situations or to couple the coupling element 2.2 to another coupling rod 2.1 with another coupling element 2.2, two linkage eyes 2.21 are provided. However, in the illustrated embodiment, only one of the two linkage eyes 2.21 is used.

[0059] Projecting in the axial direction, the coupling element 2.2 has two coupling projections 2.22, 2.23, which are shown, for example, in the illustration of the Fig. 3b can be seen and between which the driver 1.11 of the locking slide 1.1 is arranged. In this respect, the driver 1.11 is coupled to the two coupling projections 2.22, 2.23 in such a way that a rotary movement of the coupling element 2.2 is converted into a linear movement of the locking slide 1.1. Furthermore, a linear movement of the locking slide 1.1 results in a rotary movement of the coupling element 2.2. A bidirectional movement coupling of the elements is thus enabled via the two coupling projections 2.22, 2.23 and the driver 1.11.

[0060] If a locking slide 1.1 in the locking position V is to be moved into the unlocking position E, the actuating element 3 or the actuating handle 3.5 is rotated from the locking position VB into the unlocking position EB, whereby a tensile force is applied to the two coupling rods 2.1. According to the illustration of the Fig. 2c This tensile force causes the two coupling rods 2.1 to move in the direction of the actuating element 3, ie the upper coupling rod 2.1 moves downwards and the lower coupling rod 2.1 moves upwards accordingly. Due to this movement, the coupling element 2.2 rotates as shown in the Fig. 2 counterclockwise and the coupling projection 2.22 pushes the driver 1.11 and thus the bolt slide 1.1 from the locking position V towards the unlocking position E. The bolt slide 1.1 or its locking area 1.12 protruding from the bolt housing 1.2 is thus at least partially retracted into the bolt housing 1.2. This retracted unlocking position E is shown in the illustration of the Fig. 2a to recognize.

[0061] The movement of the actuating element 3 via the locking slides 1.1 now functions in the same way. If the locking slides 1.1 are each in the locking position V and the door is closed, the locking slides 1.1 are moved towards the unlocking position E by contact with the door frame. The driver 1.11 comes into contact with the other coupling projection 2.23, which causes the coupling element 2.2 to rotate in the locking housing 1.2. This rotation pushes the coupling rod 2.1 towards the actuating element 3, and the actuating handle 3.5 is accordingly moved from the locking position VB to the unlocking position EB, so that the indicator surface also becomes visible.

[0062] When the locking slides 1.1 then engage behind the door frame, they jump from the corresponding unlocking position E into the locking position V due to the preload force of the spring 4. The driver 1.11 pushes the coupling projection 2.22 outward, and the coupling element 2.2 rotates in the opposite direction. Accordingly, the coupling rods 2.1 are subjected to a tensile force, pulling them away from the actuating element 3. The actuating handle 3.5 is then also rotated back to the locking position VB, so that the indicator surface is no longer visible.

[0063] When the door is pushed or slammed shut, the actuating element 3 or the actuating handle 3.5 rotates from the locking position VB to the unlocking position VB and then automatically returns to the locking position VB due to the pretensioning force of the spring 4. This happens very quickly, especially when the door is slammed shut.

[0064] The design of the two coupling projections 2.22, 2.23 is shown, for example, in the illustration of the Fig. 3b Both coupling projections 2.22, 2.23 are designed to project axially relative to the contour of the coupling element 2.2, so that the driver 1.11 can be arranged between the two coupling projections 2.22, 2.23. The driver 1.11 has two surfaces, so that when the locking slide 1.1 moves toward the locking position V, one surface comes into contact with the first coupling projection 2.22, and when the locking slide moves in the opposite direction, the second surface comes into contact with the second coupling projection 2.23.

[0065] The first outer coupling projection 2.22, which faces the locking area 1.12 of the locking slide 1.1, is designed as a coupling lug. The inner coupling projection 2.23, which faces away from the locking area 1.12 of the locking slide 1.1, has a somewhat more complex geometry, as can also be seen from the illustration of the Fig. 3b The second coupling projection 2.23 is designed as a guide hook and protrudes radially from the annular contour of the coupling element 2.2. This projection is also shown in the illustration of the Fig. 3a clearly visible. When the bolt slide 1.1 moves from the locking position V to the unlocking position E, the driver 1.11 pushes the second guide projection 2.23 backwards. This is clearly visible when comparing the Fig. 1d Locking position V shown and the one shown in the illustration of the Fig. 2d The unlocking position E shown in the drawing is clearly visible. During this movement, the driver 1.11 slides on the sickle-shaped inner surface of the guide hook and thereby rotates the coupling element 2.2 about its axis of rotation. Since the driver 1.11 can only be moved in a linear direction and the coupling projection 2.23 can only be rotated, the rotational movement of the coupling element 2.2 is limited by a linear movement of the locking slide 1.1. As can be seen from the Fig. 2d As can be imagined, it is not possible to move the locking slide 1.1 further back from this locking position V, since the guide hook actually prevents such movement. The guide hook therefore has a dual function, and with regard to the movement of the locking slide 1.1, it also has a locking or stop function.

[0066] The actuating element 3 has a connection point 3.1 for each of the coupling rods 2.1, which is arranged on the inside of the door. These connection points 3.1 can be rotated about the actuating axis by means of an actuating shaft 3.3 extending through the door and by means of an actuating handle 3.5 that can be rotated manually about the actuating axis from the outside of the door. The coupling rods 2.1 are pivotally coupled to the actuating element 3 via the connection points 3.1, so that the coupling rods 2.1 can be moved up or down via a rotational movement of the actuating element 3 or the connection points 3.1. The connection points 3.1 of the actuating element 3 and the linkage eyes 2.21 move or rotate largely in parallel to one another.

[0067] Alternatively, the locking latches 1 or the locking slides 1.1 of the locking latches 1 can also be operated from the inside of the door or from the inside of the caravan or mobile home. For this purpose, the locking latches 1 are equipped with an additional actuation 1.3, which is designed like a rotary handle and which, for example, is shown in the illustration of the Fig. 1a can be seen. The respective locking slide 1.1 can be moved back and forth between the locking position V and the unlocking position E via the actuation 1.3. Due to the positive coupling of the locking slide 1.1 with the actuating element 3 and also with the other locking slides 1.1, all locking slides 1.1 can be moved via an actuation 1.3. Bezugszeichen:

[0068] 1 Latch 1.1 Bolt slide 1.11 Driver 1.12 Locking area 1.2 Bolt housing 1.21 Bearing projection 1.3 Actuation 2 Coupling device 2.1 Coupling rod 2.2 Coupling element 2.21 Linkage eyelet 2.22 Coupling projection 2.23 Coupling projection 3 Actuating element 3.1 Connection point 3.2 Locking indicator 3.3 Actuating shaft 3.4 Locking device 3.5 Actuating handle 4 Spring 10 Locking device VBLocking position EBUnlocking position VClocking position EEnlocking position

Claims

1. Locking device for locking a door, in particular a door of a caravan or mobile home, against a door frame with at least two locking latches (1), each having a locking slide (1.1) pre-tensioned by a spring (4) in the direction of a locking position (V) and automatically locking, and with an actuating element (3) which is coupled to the locking slides (1.1) for unlocking the locking latches (1), characterized by that the actuating element (3) has a locking indicator (3.2) and the locking latches (1) are each mechanically coupled to the actuating element (3) by means of the locking indicator (3.2) to indicate correct locking of the locking slides (1.1).

2. Closure device according to claim 1, characterized in that the actuating element (3) is bidirectionally coupled to the locking slides (1.1).

3. Closure device according to one of the preceding claims, characterized in that the actuating element (3) is pre-tensioned into the locking position (VB) via the springs (4) of the locking latches (1).

4. Closure device according to one of the preceding claims, characterized in that the locking latches (1) are coupled to one another via the actuating element (3).

5. Closure device according to one of the preceding claims, characterized in that the locking latches (1) are each coupled to the actuating element (3) via a coupling device (2), wherein the coupling device (2) is designed as a rod coupling.

6. Closure device according to claim 5, characterized in that the coupling device (2) has a coupling rod (2.1) and a coupling element (2.2) designed as a coupling ring, which is coupled to the coupling rod (2.1) and to the locking slide (1.1).

7. Closure device according to claim 6, characterized in thatthe locking slide (1.1) is coupled to the coupling element (2.2) in such a way that it can be moved in a linear direction via a rotational movement of the coupling element (2.2).

8. Closure device according to one of claims 6 or 7, characterized in that the coupling element (2.2) has two coupling projections (2.22, 2.23) and the locking slide (1.1) has a driver (1.11) arranged between the two coupling projections (2.22, 2.23).

9. Closure device according to claim 8, characterized in that one of the coupling projections (2.23) is designed as a guide hook.

10. Closure device according to claim 9, characterized in that the guide hook protrudes radially from the coupling element (2.22).

11. Closure device according to one of claims 9 or 10, characterized in that the guide hook is designed such that in the unlocking position (E) it prevents movement of the locking slide (1.1) in at least one direction.

12. Closure device according to one of claims 6 to 11, characterized in that the coupling element (2.2) has a linkage eyelet (2.21) for linking a coupling rod (2.1).

13. Closure device according to one of the preceding claims, characterized in that the actuating element (3) is coupled to the locking latch (1) in such a way that a tensile force is exerted on the coupling rod (2.1) when the actuating element (3) moves from the locking position (VB) to the unlocking position (EB).

14. Closure device according to one of the preceding claims, characterized in that the locking latch (1) is coupled to the actuating element (3) in such a way that when the locking slide (1.1) moves from the locking position (V) to the unlocking position (E), a compressive force is exerted on the coupling rod (2.1).

15. Door for a caravan or a mobile home with a locking device (10) according to one of the preceding claims.