SLIDING DOOR

Description

[0001] The invention relates to a sliding door with a locking device, in particular an unlocking device that can be triggered by pressure on a door leaf of the sliding door.

[0002] DE 101 63 061 B4 discloses a sliding door comprising a door leaf support that can be moved horizontally between two wall panels, on which two door leaves that can be spread apart in opposite directions are mounted. When the sliding door is closed, the outer surfaces of the spread-apart door leaves are flush with the outer surfaces of the two wall panels. The door leaf support can be moved horizontally along a linear guide and is driven by a traction drive driven by an electric motor.The door leaves are connected in their upper area to the movable door leaf support via guide levers each forming a parallelogram guide system, so that a distance measured at right angles to the outer surfaces of the wall elements between the door leaf and the door leaf support frame can be changed so that the outer surface of the door leaf can be positioned between the two wall elements when the sliding door is open and in the door opening and flush with the outer surface of the wall element assigned to the door leaf when it is closed.

[0003] WO 2020 / 182513 A1 and AT 507 815 A1 disclose further sliding doors.

[0004] Such sliding doors can be used as entrance doors for apartments, for example, or as room dividers. Such doors thus demarcate a private area from a non-private area and, when closed, are usually automatically locked or lockable to prevent unauthorized access to the private area. A power failure while the door is closed or locked thus results in the sliding door not being able to be unlocked or opened by the electric drive. The object of the invention is to create a sliding door with a locking device which, even when de-energized, allows the sliding door to be opened or unlocked from a private room, but which, on the other hand, cannot be unlocked from a non-private room.

[0005] The problem is solved by a sliding door according to claim 1.

[0006] The invention is based on the finding that a displacement movement of the door leaf can be used to unlock the door leaf. For this purpose, the latch is connected to the door leaf that triggers the unlocking in such a way that the displacement of the door leaf can be used to release the latch from the latch catch and, accordingly, unlock the sliding door. Accordingly, by moving the door leaf from a private room, the closed and locked sliding door can be unlocked and thus opened, particularly manually, even in a power-off state. The sliding door is preferably locked in its closed position at all times.

[0007] The bolt is connected to the door leaf in such a way that the bolt can be released in the direction of the normal to the door leaf plane by pressing against the closed door leaf in the first space, essentially in the direction of the normal to the door leaf plane. Accordingly, the bolt and bolt latch are arranged such that the bolt executes an essentially horizontal movement in order to be transferred from its unlocked position to its locked position or from its locked position to its unlocked position. Specifically, such a movement is easily carried out by pressing against the door leaf in the first space. Accordingly, the locking device comprising the bolt and the bolt latch is arranged such that the bolt can be moved out of the bolt latch by the movement executed in the direction of the normal to the door leaf plane, and the sliding door is thus unlocked.

[0008] The bolt is connected to the door leaf in such a way that the bolt remains in its locked position when pushed against the closed door leaf in the direction of the normal to the door leaf plane in the second room. This ensures that a person standing at the sliding door in the non-private room cannot unlock this sliding door by simply pushing against the door leaf. Consequently, privacy and security within the private room, i.e., the first room, are guaranteed.

[0009] In a further development of the sliding door, a static spring element fixed to the latch or the door frame is arranged between the door frame and the latch in such a way that the latch is pressed into its locked position. This ensures that the sliding door is securely locked in its closed position without the need for additional measures, and that the latch engages the latch latch, locking the sliding door securely. This is particularly necessary because the latch pivots horizontally for locking or unlocking and therefore cannot fall into its locked position due to gravity.

[0010] According to the invention, the door leaf is movable via a parallelogram guide system forming a guide lever such that a distance measured in the direction of the normal of the door leaf plane between the door leaf and the bolt can be changed .Preferably, this distance is less in a position of the sliding door that does not correspond to the closed position of the sliding door than the measured distance in the closed position of the sliding door, wherein each of the link levers extends from the door leaf to the latch proportionally in the opening direction of the sliding door. Accordingly, by pressing or displacing the door leaf with a force directed essentially in the direction of a normal to the plane of the door leaf, both unlocking and movement of the door leaf in the opening direction can be achieved. Accordingly, in the closed position of the sliding door, the door leaf can be designed to be flush with the wall elements located to the side of the door opening and, from the user's perspective, can be moved behind the corresponding wall element when the sliding door is opened.Preferably, such a sliding door comprising the parallelogram guide system comprises a second door leaf, which second door leaf is arranged on the other side of the bolt, wherein the second door leaf remains in its locked position by a pressing carried out in the second space against the closed second door leaf in the direction of the normal of the door leaf plane.

[0011] For example, the international application PCT / EP2020 / 055411 describes such a sliding door in which the door leaf can be moved via guide levers forming a parallelogram guide system.

[0012] As an alternative to the parallelogram guide system, the door leaf or the door leaves can also be guided on, preferably telescopic, linear guide systems according to embodiments not according to the invention.

[0013] Such linear guide systems can be designed, for example, as a round bar in a bore, or as a linear ball bearing.

[0014] In a further development of the sliding door, the door frame has a second latch, which second latch is arranged on the other side of the latch with respect to the first latch, such that the latch is arranged substantially centrally between the first and second latches. Accordingly, the position of the latch can be changed such that the latch engages with the second latch instead of the first when the sliding door is in the locked position. In this way, the sliding door can be unlocked by pressing from the second space instead of from the first space. Before installation of the sliding door, such a change in the position of the latch can cause the subsequently installed sliding door to open in the opposite direction. Furthermore, such a second latch can be used to press the latch into interaction, for example by means of the spring element of the first latch.

[0015] Additionally, the bolt can be pre-installed in a third position such that the bolt cannot engage the latch(es) to lock the sliding door. This can deactivate the function of the locking device. If a spring element as described above is present, its effect can also be deactivated.

[0016] Preferably, the first and second latch bolts may be formed as an integral element to facilitate installation of the locking device within the door frame.

[0017] In a further development of the sliding door, the bolt has a recess, wherein the sliding door is locked in its closed position when the bolt latch engages in the recess of the bolt, wherein the bolt has a contact surface designed as a flank, which contact surface comes into contact with the bolt latch when the bolt is moved in the opening direction of the sliding door, and the contact surface forms a phase angle. In this way, the position of the bolt can be changed such that, in a simple arrangement, the sliding door can be unlocked from the first space by moving the door leaf. By means of a contact surface designed as such a flank, it is possible for an electric drive acting exclusively in the opening direction of the at least one door leaf to transfer the sliding door from its closed position into an opening movement.At least one door leaf can be moved from its unlocked position without the sliding door having to be unlocked by means of an additional drive. This means that no additional device is required to move the bolt perpendicular to the opening or closing direction of the sliding door in order to unlock it.

[0018] In a further development of the sliding door, the guide lever forms an acute angle to the door leaf plane, with the acute angle being greater than the phase angle. This ensures that the door leaf cannot be moved from its unlocked position if a push applied in the direction of the normal to the door leaf plane in the second space is essentially directed against the closed door leaf in the direction of the normal to the door leaf plane, but the door leaf can nevertheless be moved from its unlocked position by means of an electric drive acting exclusively in the door opening direction.

[0019] The invention is explained in more detail below with reference to the figures. They show: Figure 1: an external view of a sliding door installed in a doorway; Figure 2: a horizontal section of the Fig. 1 shown sliding door; Figure 3A: a first embodiment of a locking device of the door; Figure 3B: a second embodiment of the sliding door.

[0020] Figure 1 shows a sliding door 2. The sliding door 2 comprises a door frame 12, which comprises wall elements. Within these wall elements, a door opening 4 is recessed. The sliding door 2 further comprises at least one door leaf 6, which is arranged in a Figure 1shown closing or opening direction SR. The door opening 4 and the door frame 12 are delimited at their respective lower ends by a floor 5. The sliding door 2 is shown in a partially open position, so that the door leaf 6 is partially concealed by the door frame 12. Accordingly, the edges of the door leaf concealed by the door frame 12 are shown by dashed lines. In addition to a large number of other components of the sliding door not shown, a locking device 8, 10 of the sliding door 2 is indicated. The locking device 8, 10 comprises a bolt 8 and a bolt latch 10. The bolt 8 can be arranged above the door opening 4 connected to the door leaf 6. Alternatively, the bolt 8 can be arranged at the lower end of the door leaf 6 or between the upper and lower ends.In a corresponding manner, the latch bolt 10 is arranged at the lower end of the door frame 12 in order to be able to interact with the latch bolt 8 in the closed position of the door leaf 6.

[0021] Figure 2 shows a horizontal section of an exemplary sliding door 2 in its closed position. The door leaf of the sliding door 2 is in its locked position. Regarding the design features of the Figure 2 For the embodiment shown, reference is made to the figure description in the international application PCT / EP2020 / 055411. The key difference in Figure 2 compared to this earlier international application is the locking device 8, 10. The sliding door has a support frame 9, two door leaves 6, 6', link levers 30.1, 30.2, 30.3', 30.4', and a door frame 12, which elements interact in the manner described in PCT / EP2020 / 055411.

[0022] Furthermore, the exemplary sliding door comprises a locking device 8, 10, 10', wherein the bolt 8 can be fixed to the support frame 9 and can interact with locking latches 10, 10'. The bolt 8 and the locking latches 10, 10' are arranged at the same height, with the bolt 8 being arranged between the locking latches 10, 10' in the closed position of the sliding door 2. Consequently, it is possible for the bolt 8 to be pre-fixed in two different positions, so that the bolt 8 can interact with one of these locking latches 10, 10' to lock the sliding door. If necessary, during installation of the sliding door, the bolt 8 can be repositioned by rotating it through 180° about an axis arranged parallel to the closing or opening direction SR, so that the bolt 8 engages in the second bolt latch 10' instead of the first bolt latch 10 in the locked position of the sliding door 2.

[0023] Alternatively, the second latch 10', with which the bolt 8 is not engaged in the locked position of the sliding door 2, can be replaced by any element of the door frame 12. Alternatively, the second latch 10' can be omitted.

[0024] Figure 3A shows a detail of the Figure 2 The bolt 8 has a recess 20 that engages with the latch 10 when the sliding door 2 is in the closed position, locking the sliding door 2. To assist the engagement of the bolt 8 with the latch 10, a spring element 22 can interact with a component 10' of the door frame on the opposite side of the recess 20, so that the bolt 8 interacts with the recess 20 of the latch 10 such that the sliding door is in its locked position. Optionally, this component 10' can be formed by a second latch 10'.

[0025] The bolt 8 can be releasably fixed to the support frame 9 in such a way that the arrangement of the bolt 8 can be changed by rotating it 180° around the axis arranged parallel to the closing or opening direction. Accordingly, the recess 20 can also interact with the second bolt latch 10'.

[0026] For the purpose of locking when closing the sliding door, the bolt 8 can have a bevel on its front edge 11 which, in the case of an electric drive acting only in the closing direction S, causes the bolt 8 to be deflected by the latch 10 and is consequently transferred into its locked position by the bolt 8 snapping back when the sliding door is completely closed.

[0027] The locking mechanism can be released by means of a force P1 acting on the support frame 9, which acts essentially in the direction of the normal to the door leaf plane. This means that by displacing the bolt 8, the recess 20 of the bolt 8 does not interact with the latch 10 during a door opening or closing movement SR. After unlocking, the sliding door can be opened.

[0028] If, however, a force P2 acting opposite to force P1 acts on the support frame 9, the bolt 8 is pressed into the latch 10. Accordingly, the locking mechanism is not released, so the sliding door remains in its locked position. Both the force P1 and the force P2 can be exerted by pressing on the corresponding door leaf, essentially in the direction of the normal to the door leaf plane.

[0029] Figure 3B shows a Figure 3A alternative design variant of a locking device. The Figure 3BThe bolt 8 shown has a recess 20 with a contact surface 40 formed as a flank. The contact surface 40 forms a phase angle b. If the bolt 8 connected to the door leaf support frame is driven in the opening direction of the door, the bolt 8 can slide out of the locking mechanism.

[0030] A force P1 acting on the door leaf, which triggers the unlocking, acts on the door leaf 6. The guide lever 30.1, 30.2 mounted on the support frame 9 forms an acute angle to the support frame 9 in the closed or locked position of the sliding door. Accordingly, the force acting on the support frame, which essentially acts in the direction of the normal to the door leaf, also acts in the opening direction O of the sliding door. This means that only the force P1, which essentially acts in the direction of the normal to the door leaf plane TE, causes both the unlocking and the subsequent opening movement of the sliding door.

[0031] However, if a force P2 acting on the second door leaf 6' is essentially directed in the direction of the normal to the door leaf plane TE, i.e. a force, locking of the sliding door is ensured if

[0032] an acute angle a formed between the control lever 30.3', 30.4' and the door leaf plane TE is greater than the phase angle b. If, however, the phase angle b were greater than the acute angle a, there would be a risk that a force exerted on the second door leaf 6' could unlock the sliding door, so that a private space behind the closed or locked sliding door would no longer be secured.

Claims

1. A sliding door (2) with a bar (8) which is movable in the closing and opening direction (SR) of a door leaf (6) of the sliding door (2), wherein the sliding door (2) in its closed state separates a first space from a second space, and a door frame comprising a bar catch, wherein the bar (8) engages in the bar catch when the door leaf (6) is in its closed state, the door leaf is movable via control arms forming a parallelogram guide system (30.1,30.2, 30.3', 30.4')in such a way that a distance between the door leaf and the bar measured in the direction of the normal to the door leaf plane is changeable, and the engagement can be released by movement of the door leaf (6), and therefore of the bar, in the direction of the normal of the door leaf plane (TE), and that the releasing of the bar (8) in the direction of the normal of the door leaf plane (TE) can be brought about by pressing performed in the first space substantially in the direction of the normal of the door leaf plane against the closed door leaf (6), wherein the bar is connected to the door leaf (6) in such a way that the bar (8) remains in its locked position substantially in the direction of the normal of the door leaf plane against the closed door leaf (6) by pressing performed in the direction of the normal of the door leaf plane in the second space.

2. The sliding door (2) according to one of the preceding claims, wherein a static spring element fixed to the bar or the door frame is arranged between the door frame and the bar in such a way that the bar is pressed into its locked position.

3. The sliding door (2) according to one of the preceding claims, wherein the distance between the door leaf (6, 6') and the bar (8) measured in the direction of the normal of the door leaf plane (TE) is changeable such that this distance, when the sliding door (2) is in a position that does not corresponding to the closed position of the sliding door (2), is less than the measured distance when the sliding door (2) is in the closed position, wherein each of the control arms (30.1, 30.2, 30.3', 30.4') extends from the door leaf (6) to the bar (8) proportionally in the opening direction of the sliding door (2).

4. The sliding door (2) according to claim 3, comprising a second door leaf (6'), which second door leaf (6') is arranged on the other side of the bar (8), wherein the second door leaf (6') remains in its locked position in the direction of the normal of the door leaf plane by pressing in the second space against the closed second door leaf (6').

5. The sliding door (2) according to one of claims 3 and 4, the door frame (12) comprising a second bar catch (10'), which second bar catch (10') is arranged on the other side of the bar (8) with respect to the first bar catch (10), so that the bar (8) is arranged substantially in the middle between the first and second bar catch (10, 10').

6. The sliding door (2) according to one of claims 3 to 5, wherein the bar (8) has a recess (20), wherein the sliding door (2) is locked in its closed position when the bar catch (10) engages in the recess (20) of the bar (8), wherein the bar catch (10) has a contact surface (40) designed as a flank, which contact surface (40) comes into contact with the bar catch (10) when the bar (8) is moved in the opening direction (O) of the sliding door (2), and the contact surface (40) forms a phase angle (b).

7. The sliding door (2) according to claim 6, wherein the control arm (30.1, 30.2, 30.3', 30.4') forms an acute angle (a) to the door leaf plane (TE), wherein the acute angle (a) is greater than the phase angle (b).