Locking device for sliding door installation and sliding door installation

Abstract

The present invention relates to a locking device for fixing a belt of a sliding door device, the locking device comprising a housing, an actuator and a travel device are accommodated in the housing, the travel device can be linearly displaced in the housing by means of the actuator, a guide mechanism is arranged at the travel device, the guide mechanism guides in a first guide slot, a locking slider is arranged in or at the housing, the locking slider can be moved toward the belt to a locking position and can be moved away from the belt to a release position, a second guide slot is formed in the locking slider, in the second guide slot, the guide mechanism also guides, and a pawl is accommodated at the locking slider, the pawl is configured to engage in the belt and can be displaced at the locking slider in the extension direction of the belt. According to the present invention, a ramp is formed in the receiving portion between the pawl and the locking slider, and when a tensile force is applied to the belt in the locking direction, an additional closing path beyond the locking position of the pawl can be generated by means of the ramp.

Description

Technical Field

[0001] The invention relates to a locking device for a sliding door device and a sliding door device equipped with the locking device. Background Art

[0002] A variety of locking devices are known for such devices. For example, there are locking devices that are integrated into the door leaf drive. This makes the modification and use of locking pins, for example, difficult and requires a lot of structural space, as can be seen, for example, in WO 2015 / 188209A1.

[0003] Other types of locking are based on the engagement of a locking pin with a gear, for example, on a deflection roller of a belt drive. This requires complex control of the locking pin in order to ensure locking. If someone pulls on the door leaf, for example, this causes very high loads on or in the locking device due to the lever effect. Furthermore, the adjustment of the locked position of the door is complex.

[0004] For example, CN 108131063 A discloses a simple design of a locking device for securing a belt of a sliding door installation with a locking slide.

[0005] From the subsequently disclosed DE 10 2019 108 270 A1, a locking device for fixing the belt of a sliding door device is known, the locking device comprising a housing in which an actuator and a travel device are accommodated, wherein the travel device can be linearly displaced in the housing by means of the actuator, and wherein at least one guide mechanism is provided at the travel device, the guide mechanism being guided in a first guide slot in the housing, and wherein a locking slider is provided in or at the housing, the locking slider being movable toward the belt along a movement direction into a locking position for locking the belt and movable away from the belt into a release position for releasing the belt, for this purpose, at least one second guide slot is formed in the locking slider, in which the guide mechanism is likewise guided, and wherein a pawl is accommodated at the locking slider, the pawl being configured to engage in the belt and being displaceable at the locking slider in the extension direction of the belt.

[0006] A disadvantage is that the locking slide can only be moved back and forth between a locking position and a release position. In the locked position, a belt having a toothed structure facing the locking slide or the ratchet is held between the pawl and the housing section of the housing. In this holding position, for the sake of locking reliability, a tensile force of a predetermined magnitude must be applied to the belt without the belt slipping between the pawl and the housing section, for example, during a breaking test. Slippage must also be reliably prevented if, for example, grease or oil is present on the belt or if the locking device has been used for a longer period of time.

[0007] However, a disadvantage is that the position of the locking slide or the pawl in the locked position is subject to tolerances, so that even when the belt is tightened, in the locked position of the pawl there can still be lateral residual air, for example between the belt and the housing. This residual air of a few tenths of a millimeter can have the result that the tensile force on the belt required for the closing security cannot be maintained by the locking security and the belt slips. Summary of the invention

[0008] The object of the present invention is therefore to overcome the above-mentioned disadvantages and to further improve the clamping of the belt between the pawl and the housing in the locked position of the pawl.

[0009] This object is achieved based on the locking device according to the invention and based on the sliding door arrangement according to the invention. Advantageous developments of the invention are described below.

[0010] The invention includes the following technical teaching: a locking device for fixing a belt of a sliding door installation comprises a housing in which an actuator and a travel device are accommodated. The travel device is hereby displaceable linearly in the housing by means of an actuator, and at least one guide mechanism is provided at the travel device, which guides in a first guide slot in the housing. The locking slide is arranged in the housing or at the housing so as to be movable toward the belt in a locking position for locking the belt and away from the belt to a release position for releasing the belt along a movement direction. For this purpose, at least one second guide slot is formed in the locking slide, in which the guide mechanism is likewise guided. A pawl is movably accommodated at the locking slide, which pawl is designed to engage in the belt and can be displaced at the locking slide in the extension direction of the belt due to the movability of the pawl.

[0011] According to the invention, at least one ramp is formed in the receptacle between the pawl and the locking slide, by means of which an additional closing path beyond the locking position of the pawl can be generated when a tensile force is applied to the belt in the locking direction. The ramp has the following effect: the pawl moves laterally and additionally toward the belt via the inclined portion of the ramp, engages even more deeply with the belt and presses or presses the belt toward the rear housing surface, so that the air gap is thereby reduced or even eliminated.

[0012] If the sliding doors are kinematically coupled to one another via a transmission mechanism, such as a belt drive or the like, this allows for a reliable locking of the associated sliding doors, for example in the form of sliding door leaves or multi-leaf sliding door installations. This means that when locking, the end position of the door leaves does not have to be achieved exactly. The associated door leaves can also be slightly outside the actual locked position. In addition, the locking can then also be easily integrated into existing door leaf installations and can comply with minimum closing forces.

[0013] Preferably, the locking slide has a guide surface, by means of which the pawl is guided on the locking slide in the extension direction of the belt. Here, at least one ramp is formed in the guide surface. The ramp causes the locking slide to move toward the belt via the pawl, so that the locking slide reliably engages with the belt in a force-fitting and / or form-fitting manner and a minimum closing force is achieved.

[0014] The guide surface has in particular a first slope and a second slope which is spaced apart from the first slope. This type of guide has the advantage of a particularly low-friction guide, since only small discrete contact surfaces are formed at the slope and the guidance of the pawl arranged on the locking slide is statically defined and does not wobble. Due to the flat slope, self-locking during rebound is kept low.

[0015] The pawl has a counter-guide surface which is substantially complementary to the guide surface. The counter-guide surface can run towards a ramp which is particularly or preferably formed on the locking slide, wherein the ramp and the counter-guide surface together form a ramp arrangement with the desired effect to a certain extent, wherein alternatively, the guide edge on the locking slide can also run towards a flat ramp on the locking slide.

[0016] Furthermore, it is proposed that a first spring element is provided between the locking slide and the pawl, which preloads the pawl in the locking direction. This achieves a defined position of the pawl on the locking slide, so that, in particular if the pawl is not engaged with the belt in the release position, the pawl does not remain in any arbitrary position on the locking slide, but rather assumes a neutral position known in advance.

[0017] Furthermore, a second spring element can be provided, which is arranged between the locking slide and the pawl and which preloads the pawl in the direction opposite to the locking direction. The spring force of the second spring element is advantageously greater than the spring force of the first spring element. This ensures that, when moving in the unlocking direction, the pawl is also reliably disengaged from the belt and the position is not impeded by the first spring element.

[0018] According to a second embodiment, a cover element can be provided at the housing, the second spring element being formed at the cover element, and the variant provides a simple one-piece structure with the cover element. When the cover element thus formed is placed, the spring element reaches effective engagement due to contact with the locking element.

[0019] Here, the second spring element on the cover element can be designed as a spring clip. The spring clip is arranged or molded on the cover element and is set in the gap between the locking slide and the inner surface of the housing. This is a very simple and cost-effective design so that the cover module can be produced and can be effectively connected to the locking element simply by placing it on the housing.

[0020] According to an alternative second embodiment, in each of the above-mentioned locking devices, the ramp is formed as a section in the first guide slot. Preferably, the section in the first guide slot is connected to the following position: when the locking slide is in the locking position, the guide mechanism is in the position.

[0021] If a tensile force is applied to the belt in the locking direction, the locking slide is also displaced in the locking direction when the pawl is in a positive fit against the locking slide and the pawl engages in the toothing of the belt, and the second spring element is compressed between the locking slide and the part of the housing. Here, the guide mechanism can be moved further in the first guide slot into the section connected according to the invention, which is achieved by the residual magnetism in the linear motor. The section in the first guide slot is designed to be bent toward the belt, so that an alternative shape of a ramp is formed in the contour of the guide slot, along which the guide mechanism can be moved. As a result, the locking slide is also pressed against the belt with the pawl, whereby, in an alternative manner, the tolerance of the belt in the clamping between the pawl and the housing part is also squeezed out to a certain extent.

[0022] Preferably, the pawl, which is received and guided in or on the locking slide via a ramp, is made of a metallic material, including a silicon-copper-zinc alloy (Siliziumtombak) material. This material is particularly low-loss and friction-optimized, especially when forming a friction pair with a steel material. In a second alternative embodiment, the pawl can be made of plastic, because the guidance for tolerance compensation is not performed by means of the pawl, but by means of the housing cover composed of plastic.

[0023] The invention also relates to a sliding door device having the above-mentioned locking device. The sliding door device can be designed as a single leaf or multiple leaves.

[0024] If the sliding door system is designed as a multi-leaf sliding door system, its door leaves can be connected to a belt so that when the door leaves in the closed position are pulled apart and thus pulled in the opening direction, a tensile force can be generated on the belt in the locking direction. In other words, the locking device must only engage with the pawl in the belt when the door leaves are opened. This makes it possible to achieve a bistable solution, in which electrical energy is only required if the locking device is to be unlocked or if locking is not permitted. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other measures for improving the present invention are described in detail below together with the description of preferred embodiments of the present invention according to the accompanying drawings. The accompanying drawings show:

[0026] Figure 1a and Figure 1b Two views showing a locking device according to a first embodiment of the invention,

[0027] Figure 21 shows a drive section of the locking device,

[0028] Figure 3a and Figure 3b Two exploded views of the locking section of the locking device of FIG. 1 are shown,

[0029] Figure 4a and Figure 4b 1 shows a respective vertical longitudinal section through the locking device of FIG. 1 in two operating positions,

[0030] Figure 5 In the vertical longitudinal section, a further vertical longitudinal section through the locking device of FIG. 1 is shown.

[0031] Figure 6 A vertical longitudinal section showing a locking device according to a second embodiment of the present invention,

[0032] Figure 7 Show Figure 6 A detailed view of the cover element of the locking device, and

[0033] Figure 8 A vertical longitudinal section through a locking device according to a second exemplary embodiment of the invention is shown. DETAILED DESCRIPTION

[0034] Figure 1a A three-dimensional view of a locking device 100 according to a first embodiment of the invention is shown. The locking device 100 comprises a housing 11 in which a locking part is accommodated. A cover element 26 and preferably a sensor holder 30 are arranged on the front side of the housing 11. The housing 11 and the cover element 26 enclose a belt guide space 25 for the tensioning edge of the belt 10 (not shown here). The housing 11 and the sensor holder 30 enclose a belt guide space 25 for the lower slack edge (Freitrum) of the belt 10. A projection of the travel device 13, which will be described in detail later, protrudes from the right side of the housing 11. The projection can be actuated by means of an actuating mechanism in a manner of squeezing to the left, so that the lock can be released manually in an emergency.

[0035] The illustrated pawl 18 is accommodated on the housing 11 and can lock a belt (not shown) in the belt guide space 25 in a locking direction SR. The pawl 18 preferably has a tooth profile on the side facing away from the cover element 26, which is substantially complementary to the tooth profile of the belt 10, which faces the pawl 18 in the upper belt guide space 25. By this, the pawl 18 can be locked with the belt 10 in an advantageously form-fitting manner in order to fix the belt and thus in order to lock one / more connected door leaves of the door leaf device.

[0036] Figure 1bA partially exploded view of a locking device 100 is shown. The housing has a rear part 11a, which closes or encloses the other locking device 100 toward the rear. The housing part 11b fastened thereto serves to accommodate a part of the locking device 100, namely an element which moves the actual locking element in the form of a pawl 18 between an unlocked position and a locked position. An actuator 12, exemplarily in the form of a coil with an iron core, is accommodated between the housing part 11a and the housing part 11b, wherein the rear housing part 11a is shown removed. The travel device 13 interacts electromagnetically with the actuator 12 and moves between a closed position and an open position to the left or right in a closing direction SR or against the closing direction SR depending on the polarization direction when the actuator 12 is energized.

[0037] Two guide means 14 are formed on the travel device 13 in a manner that they protrude toward the cover element 26. The guide means 14 are pins that have a bearing, in particular a rolling bearing, that is arranged thereon so as to be freely rotatable and has a circular cross-section. The guide means 14 are thereby guided in the respective first guide slots 15 of the housing part 11c in the closing direction SR or in the opposite direction of the closing direction SR. The travel device 13 is thereby also guided.

[0038] The locking slide 16 that is present can be vaguely seen between the cover element 26 and the latch 18 .

[0039] Figure 2 A detailed enlarged view of an actuator 12 connected to a travel device 13 of a locking device 100 is shown, in particular without a housing 11. The travel device 13 is preferably formed from a ferromagnetic material, with corresponding sections in the form of travel device elements 13a approximately centrally located on the right and left, between which permanent magnets are arranged in a manner not shown in detail.

[0040] The carriage 13 is guided in the closing direction SR on the side facing away from the housing part 11b by means of guide rollers 28 arranged quadruple on the actuator 12 (not shown). The axes of rotation of the guide rollers 28 extend perpendicularly to the closing direction SR and preferably transversely to the direction of movement of the carriage 13. The guide rollers 28 are arranged to be freely rotatable so that the carriage 13 is guided with low friction.

[0041] Figure 3a and Figure 3b Two exploded views of the components of the locking device 100 are shown. The locking slide 16 has a guide groove 16b on its side facing the pawl 18, which is open to the end side and closed to the opposite end side. The guide groove 16b is surrounded laterally by two projections 16a extending away from each other in a flange-like manner.

[0042] The pawl 18 comprises mutually facing guide grooves 18b of C-shaped cross section, which surround the projection 16a. As a result, the pawl 18 is guided along the closing direction SR at the locking slide 16, but with a small gap in a direction transverse to the closing direction SR and transverse to the projection 16a. The pawl 18 also comprises a projection, not shown, which is formed between the guide grooves 18b and is formed spaced apart from the guide grooves 18b. The projection is accommodated in a guided manner in the guide groove 16b. At one end, the projection has a projection 18a that protrudes toward the locking slide 16 or the guide groove 16b in order to form a ramp according to the invention.

[0043] A first spring element 23 is tensioned between the projection 18a and the spring stop 29. The spring element 23 presses the pawl 18 on the locking slide 16 in the closing direction SR.

[0044] In an approximately central region, the locking slide 16 comprises two second guide slots 17 of arcuate curvature, into which the guide means 14 projects and is guided on the inside by means of bearings in the guide slots 17. The particular curvature of the guide slots 17 causes that, when the guide means 14 moves transversely to the closing direction SR, the locking slide 16 moves with the pawl 18 toward the belt and can thereby clamp the belt.

[0045] In the locked position, the pawl 18 is therefore pressed against the belt 10 , but the belt can still contain air due to tolerances relative to the pawl 18 .

[0046] In order to automatically displace the air when a tensile force is applied to the belt 10 in the locking direction SR, the projection 18a is guided by means of a contact section 22 formed at the projection on a guide surface 21 of the locking slide 16 facing the projection. The guide surface 21 comprises two slopes 19a, 19b, and at the slopes 19a, 19b, when a tensile force is applied to the belt 10 in the locking direction SR, the contact section 22 runs obliquely, wherein the first slope is at the projection 18a and the second slope is at the lateral end of the locking slide 16. As a result, the air is displaced relative to the belt 10 and the minimum locking force can be maintained.

[0047] If a tensile force is applied to the belt, the second spring element 24a arranged between the locking slide 16 and the pawl 18 opposes the first spring element 23 with a higher spring rate but with a smaller spring travel and compresses when the locking element 23 moves in the locking direction SR. At the same time, the first spring element 23 relaxes slightly at the same time. Since the spring force of the first spring element 23 is smaller than the spring force of the second spring element 24a, the pawl 18 can be displaced toward the first spring element 23 even in the defined position of the pawl 18 between the two spring elements 18 and 24a, so that the toothing of the belt can be inserted into the toothing of the pawl 18.

[0048] Figure 4a and Figure 4b Shown once in the unlocked position ( Figure 4a ) and once in the locked position ( Figure 4b ) in a locking device 100 that interacts with the belt 10. A comparison of the figures clearly shows how the guide slot 17 moves the locking slide 16 and thus the pawl 18 toward or away from the upper tensioning edge of the belt 10 when the guide mechanism 14 provided on the travel device is displaced horizontally in the locking direction SR and against the locking direction SR. In order to guide the guide mechanism 14 horizontally in the locking direction SR and against the locking direction SR, a first, horizontally extending, straight guide slot 15 is introduced into the housing, in which the guide mechanism 14 runs, and a second guide slot 17 is designed in a curved manner, so that when the guide mechanism 14 is displaced horizontally, the locking slide 16 moves with the pawl 18 toward the belt 10 for locking and away from the belt 10 for unlocking. If, in the locked position of the locking slide 16 , a tensile force acts on the belt 10 in the locking direction SR, the pawl 18 is still displaced a small catch-up distance along the guide surface 21 in the locking direction SR and presses air out of the operative connection between the pawl 18 and the belt 10 .

[0049] Figure 5 The locking device 100 is shown in a vertical longitudinal section in the locked position without showing the belt in the belt guide space 25. The interaction of the guide slots 15, 17 with the guide means 14 and the pawl 18 can be seen particularly well. The pawl 18 preferably has a counter-surface in the form of a corresponding contact section 22 in the guide surface 21 for running onto the ramps 19a, 19b, which belongs to each ramp 19a, 19b.

[0050] Figure 6The locking device 100 according to the second embodiment of the present invention is shown. In contrast to the first embodiment, the second spring element 24b is formed on the cover element 26 and presses the locking slide 16 in the unlocking direction. The second spring element 24b on the cover element 26 is arranged in the space between the locking slide 16 and the inner surface 27 of the housing 11 facing the locking slide and acts against the first spring element 23. The locking slide 16 is formed in a ramp-free manner and the pawl 18 is preloaded relative to the stopper on the locking slide 16 by means of the first spring element 23, wherein the preload direction acts against the force direction of the second spring element 24b, wherein, as shown, the guide mechanism 14 is displaced to the right with the travel device 13 and the locking slide 16 is placed in the locked position.

[0051] Figure 7 A perspective detail view of the cover element 26 is shown. The spring element 24 b is integrally formed on the inside of the cover element 26 , wherein the spring element 24 b can also be arranged separately on the cover element 26 .

[0052] Figure 8 A locking device 100 according to a second embodiment of the invention is shown. In this embodiment, the guide slot 15 is formed in the housing 11 with a ramp 20, which is formed by a corresponding section A. Section A has an area that rises toward the pawl 18 at the end facing the spring element 24b. The area forms a ramp 20 on the bottom side, which presses the guide mechanism 14 toward the pawl 18 or the upper tensioning edge of the belt 10. In this case, the guide mechanism 14 drives the locking slide 16 in the same direction via the guide slot 17 (see the figure above). The residual magnetism of the actuator 12 is sufficient to keep the travel device 13 in the rightmost position, so that the desired effect is achieved, that is, if a tensile force is applied to the belt 10 toward the ramp 20, to the right in the image plane, the pawl 18 is caught up with the belt 10, which is achieved when the spring element 24b is compressed, and if the tensile force is removed again, the compression also sends the movement back. This embodiment represents an alternative to the ramps 19 a , 19 b formed between the locking slide 16 and the pawl 18 .

[0053] The invention is not restricted to the above-described preferred embodiments in its embodiment. Rather, a large number of variants are conceivable, which can also be used by the solution shown even in a fundamentally different type of embodiment. All features and / or advantages known from the description or the drawings, together with structural details or spatial arrangements, can be important for the invention not only individually but also in a wide variety of combinations. For example, the spring elements 24a, 24b can be arranged in combination with one another or can be exchanged with one another. Instead of a positive engagement with the belt form fit, a pure force flow can also be provided.

[0054] Reference numerals list

[0055] 100 Locking device

[0056] 10. Belt

[0057] 11 Housing

[0058] 11a-11c Housing parts

[0059] 12 Actuator

[0060] 13 Travel device

[0061] 13a Travel device components

[0062] 14 Guidance Agency

[0063] 15 First guide chute

[0064] 16 Locking slide

[0065] 16a Guide protrusion

[0066] 16b Guide groove

[0067] 17 Second guide chute

[0068] 18 Pawl

[0069] 18a Raised

[0070] 18b Guide groove

[0071] 19a, 19b Slope

[0072] 20 Slope

[0073] 21 Guide surface

[0074] 22 contact section

[0075] 23 First spring element

[0076] 24a, 24b Second spring element

[0077] 25 Belt guide space

[0078] 26 Cover element

[0079] 27 inside

[0080] 28 Guide roller

[0081] 29 Spring stop

[0082] 30 Sensor holder

[0083] SR Locking direction

[0084] Section A

Claims

1. A locking device (100) for fixing a belt (10) of a sliding door device, the locking device comprising a housing (11) in which an actuator (12) and a travel device (13) are accommodated, wherein: The travel device (13) can be linearly displaced in the housing (11) by means of the actuator (12), and at least one guide mechanism (14) is provided on the travel device (13), the guide mechanism being guided in a first guide slot (15) in the housing (11), and a locking slide (16) is provided in or on the housing (11), the locking slide being movable toward the belt along a movement direction to a locking position for locking the belt (10) and being movable away from the belt to a release position for releasing the belt (10), for which purpose at least one second guide slot (17) is formed in the locking slide (16), in which the guide mechanism (14) is likewise guided, and a pawl (18) is accommodated on the locking slide (16), the pawl being configured to engage in the belt (10) and being displaceable on the locking slide (16) in the extension direction of the belt (10), It is characterized in that At least one ramp (19a, 19b) is formed in the receiving portion between the pawl (18) and the locking slide (16), by means of which an additional closing path beyond the locking position of the pawl (18) can be generated when a tensile force is applied to the belt (10) in the locking direction (SR).

2. The locking device (100) according to claim 1, It is characterized in that The locking slide (16) has a guide surface (21), by means of which the pawl (18) is accommodated and guided on the locking slide (16) in the extension direction of the belt (10), wherein at least one ramp (19a, 19b) is formed in the guide surface (21).

3. The locking device (100) according to claim 2, It is characterized in that The guide surface (21) has a first slope (19a) and a second slope (19b) which is spaced apart from the first slope (19a).

4. The locking device (100) according to claim 2, It is characterized in that The pawl (18) has a counter-guide surface which is substantially complementary to the guide surface (21), wherein the counter-guide surface has at least one contact section (22) for running against the at least one ramp (19a, 19b).

5. The locking device (100) according to claim 1 or 2, It is characterized in that A first spring element (23) is provided between the locking slide (16) and the pawl (18), and the first spring element preloads the pawl (18) in the locking direction (SR).

6. The locking device (100) according to claim 5, It is characterized in that A second spring element (24a, 24b) is provided between the locking slide (16) and the pawl (18), the second spring element preloads the pawl (18) against the locking direction (SR), wherein the spring force of the second spring element (24a, 24b) is greater than the spring force of the first spring element (23).

7. The locking device (100) according to claim 6, It is characterized in that A cover element (26) is arranged on the housing (11), on which the second spring element (24b) is formed.

8. The locking device (100) according to claim 7, It is characterized in that The second spring element (24b) on the cover element (26) is designed as a spring clip which is arranged or molded on the cover element (26) and is provided in a gap between the locking slide (16) and an inner surface (27) of the housing (11).

9. The locking device (100) according to claim 1 or 2, It is characterized in that The pawl (18) is made of a metal material including a silicon-copper-zinc alloy material.

10. A locking device (100) for fixing a belt (10) of a sliding door installation, the locking device comprising a housing (11) in which an actuator (12) and a travel device (13) are accommodated, wherein: The travel device (13) can be linearly displaced in the housing (11) by means of the actuator (12), and at least one guide mechanism (14) is provided on the travel device (13), the guide mechanism being guided in a first guide slot (15) in the housing (11), and a locking slide (16) is provided in or on the housing (11), the locking slide being movable toward the belt along a movement direction to a locking position for locking the belt (10) and being movable away from the belt to a release position for releasing the belt (10), for which purpose at least one second guide slot (17) is formed in the locking slide (16), in which the guide mechanism (14) is likewise guided, and a pawl (18) is accommodated on the locking slide (16), the pawl being configured to engage in the belt (10) and being displaceable on the locking slide (16) in the extension direction of the belt (10), It is characterized in that At least one ramp (20) is formed as a section (A) in the first guide slot (15), by means of which an additional closing path beyond the locking position of the pawl (18) can be generated when a tensile force is applied to the belt (10) in a locking direction (SR).

11. The locking device (100) according to claim 10, It is characterized in that The section is connected to a position of the guide mechanism (14) when the locking slide (16) is in the locking position.

12. The locking device (100) according to claim 10 or 11, It is characterized in that A first spring element (23) is provided between the locking slide (16) and the pawl (18), and the first spring element preloads the pawl (18) in the locking direction (SR).

13. The locking device (100) according to claim 12, It is characterized in that A second spring element (24a, 24b) is provided between the locking slide (16) and the pawl (18), the second spring element preloads the pawl (18) against the locking direction (SR), wherein the spring force of the second spring element (24a, 24b) is greater than the spring force of the first spring element (23).

14. The locking device (100) according to claim 13, It is characterized in that A cover element (26) is arranged on the housing (11), on which the second spring element (24b) is formed.

15. The locking device (100) according to claim 14, It is characterized in that The second spring element (24b) on the cover element (26) is designed as a spring clip which is arranged or molded on the cover element (26) and is provided in a gap between the locking slide (16) and an inner surface (27) of the housing (11).

16. The locking device (100) according to claim 10 or 11, It is characterized in that The pawl (18) is made of a metal material including a silicon-copper-zinc alloy material.

17. A sliding door installation having a locking device (100) according to any one of the preceding claims.

18. The sliding door device according to claim 17, It is characterized in that The door leaf of the sliding door device is connected to the belt (10) so that when the door leaf in the closed position is violently pulled open, a pulling force applied to the belt (10) can be generated in a locking direction (SR).

Images