Locking device for sliding door installation and sliding door installation

Abstract

The present invention relates to a locking device for securing a belt of a sliding door installation. The locking device includes a housing, an actuator and a travel device accommodated in the housing. The travel device can be linearly displaced in the housing by means of the actuator. A guide mechanism is provided on the travel device, the guide mechanism being guided in a first guide slot. A locking slider is provided in or on the housing, the locking slider being movable toward the belt into a locked position and away from the belt into a released position. A second guide slot is formed in the locking slider, and a pawl is accommodated in the locking slider. The pawl is configured to engage with the belt and can be displaced on the locking slider in the direction of extension of the belt. According to the present invention, the first guide slot has a section extending obliquely toward the pawl, whereby a ramp is formed in the first guide slot so that when a tensile force is applied to the belt in the locking direction, the pawl is pressed further toward the belt in the locked position by the guide mechanism moving toward the ramp.

Description

Technical Field

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

[0002] Various 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 the locking pin difficult and requires a lot of structural space, as can be seen, for example, in WO 2015 / 188209 A1.

[0003] Other types of locking rely on the engagement of a locking pin with a gear, for example, on a deflecting roller of a belt drive. This requires complex control of the locking pin to ensure locking. If someone pulls on the door leaf, for example, this can result in very high loads on or in the locking mechanism due to the lever effect.

[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 displaced linearly in the housing by means of the actuator, and wherein at least one guide mechanism is provided at the travel device, which is guided in a first guide slot in the housing, and wherein a locking slider is provided in or at the housing, the locking slider can be moved toward the belt along the direction of movement into a locking position for locking the belt and can be moved 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 on the locking slider, which pawl is configured to engage in the belt and can be displaced on 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 locked position and a released position. In the locked position, a belt with a toothed structure facing the locking slide or the pawl is held between the pawl and the housing section of the housing. In this holding position, according to conventional regulations, a tensile force of approximately 1800 N must be applied to the belt without the belt slipping between the pawl and the housing section for reliable locking. Slippage must also be reliably prevented if, for example, grease or oil is present on the belt or if the locking device has been in use for an extended period of time.

[0007] However, a disadvantage is that the position of the locking slide or pawl in the locked position is subject to tolerances, so that even when the belt is tightened, there can still be lateral residual air in the locked position of the pawl, for example between the belt and the housing. This residual air of a few tenths of a millimeter can result in the minimum tensile force of 1800 N on the belt not being maintained for reliable locking, and the belt slipping. Summary of the Invention

[0008] The object of the present invention is therefore to overcome the aforementioned 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 present invention includes the following technical teaching: a locking device for fixing a belt of a sliding door system comprises a housing in which an actuator and a travel device are accommodated. The travel device is linearly displaceable in the housing by means of an actuator, and at least one guide mechanism is provided on the travel device, which is guided in a first guide slot in the housing. A locking slide is arranged in or on the housing so that it can be moved in a direction of movement toward the belt into a locking position for locking the belt and away from the belt into a release position for releasing the belt. To this end, at least one second guide slot is formed in the locking slide, in which the guide mechanism is similarly guided. A pawl is movably accommodated on the locking slide, which is designed to engage with the belt and, due to its movability, can be displaced on the locking slide in the direction of extension of the belt.

[0011] According to the present invention, the first guide slot in the housing has a section extending obliquely toward the pawl, whereby a ramp is formed in the first guide slot so that when a tensile force is applied to the belt in the locking direction, the pawl is further pressed toward the belt in the locking position by the guide mechanism moving toward the ramp.

[0012] The section of the first guide slot that runs obliquely toward the pawl has the effect that the pawl, via the oblique section, is moved laterally and additionally toward the belt, engaging even deeper with the belt and pressing or squeezing the belt toward the rear housing surface. This effect is due to the fact that the locking slide is laterally displaced by the introduced tensile force, and the dual guide mechanism, via the travel device, follows this movement due to the residual magnetism present in the actuator. This effect can also be achieved when the actuator is de-energized.

[0013] When the belt is pulled and the locking slide is displaced, the guide mechanism, due to residual magnetism, moves along with the locking slide into the inclined section of the first guide slot. This not only causes the locking slide to shift laterally, but also forces out the air space between the pawl and the belt, which is limited by the tolerance. As a result, the minimum closing force of 1800 N is maintained because the belt is tightened more strongly due to its own tension.

[0014] If the sliding doors are kinematically coupled to one another via a transmission mechanism, such as a belt drive, this allows for reliable locking of related sliding doors, for example in the form of sliding door leaves or multi-leaf sliding door systems. This eliminates the need for precise end position of the door leaves during locking. The related door leaves can even be slightly outside the actual locked position. Furthermore, the locking mechanism can then be easily integrated into existing door leaf systems.

[0015] According to an embodiment of the present invention, the section extending obliquely toward the pawl generates movement of the locking slide toward the pawl and applies a tensile force to the belt in the locking direction, whereby the tensile force causes the belt to be held more strongly, and through the residual magnetism in the actuator, the two existing guide mechanisms move with the aid of the travel device as the locking slide is laterally displaced by the introduction of the tensile force.

[0016] Preferably, the inclined section is connected in the first guide link to a position in which the guide means is located when the locking slide is in the locking position.

[0017] 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 rests on the locking slide in a form-fitting manner and engages in the toothing of the belt, and the second spring element is compressed between the locking slide and the housing component.

[0018] Here, the guide mechanism can be moved further in the first guide link into the segment connected according to the present invention, which is achieved by the residual magnetism in the actuator designed as a linear motor. The segment in the first guide link is angled toward the belt, resulting in a ramp-like shape in the contour of the guide link, along which the guide mechanism can be moved. As a result, the locking slide is also pressed against the belt with the pawl, which, as an alternative, also eliminates some tolerances in the tensioning of the belt between the pawl and the housing component, since the locking slide is kinematically coupled to the guide mechanism via the second guide link.

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

[0020] Additionally and in order to support the further clamping action, at least one ramp can be 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.

[0021] The locking slide preferably has a guide surface by means of which the pawl is guided on the locking slide in the direction of extension of the belt. In this case, at least one ramp is formed in the guide surface. The ramp causes the locking slide to move via the pawl toward the belt, so that the locking slide reliably engages with the belt in a non-positive and / or positive manner and achieves a minimum closing force.

[0022] The guide surface has in particular a first slope and a second slope 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 on the slopes, and the guidance of the pawl provided on the locking slide is statically defined and does not wobble.

[0023] The pawl has a counter-guide surface that is essentially 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 only together form a ramp arrangement with the desired effect to a certain extent, wherein alternatively, a guide edge on the locking slide can also run towards a flat ramp on the locking slide.

[0024] Furthermore, it is proposed that a first spring element be provided between the locking slide and the pawl, which preloads the pawl in the locking direction. This results in 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 released position, the pawl does not remain in any arbitrary position on the locking slide, but rather assumes a neutral position which is already known.

[0025] Furthermore, a second spring element can be provided, which is arranged between the locking slide and the pawl and preloads the pawl against 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 the pawl is reliably disengaged from the belt even when moving in the unlocking direction.

[0026] The pawl is preferably made of a metallic material, including a silicon-copper-zinc alloy (Siliziumtombak) material, which has been shown to be particularly low-loss, in particular when forming a friction pair with a steel material.

[0027] The invention also relates to a sliding door system having the above-mentioned locking device. The sliding door system can be designed as a single leaf or multiple leaves.

[0028] 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 in the opening direction, a tensile force is applied to the belt in the locking direction. This means that the locking mechanism must engage the belt with the pawl only when the door leaves are opened. This creates a bistable solution, where electrical energy is only required if the locking mechanism is to be unlocked or if locking is not permitted. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Further measures for improving the present invention are described in detail below together with the description of preferred embodiments of the present invention with reference to the accompanying drawings. The accompanying drawings show:

[0030] Figure 1a and Figure 1b Two views showing a locking device according to a first embodiment of the invention,

[0031] Figure 2 1 shows the drive section of the locking device,

[0032] Figure 3a and Figure 3b Two exploded views of the locking section of the locking device according to FIG. 1 are shown,

[0033] Figure 4 1 shows a diagram of a locking device with a locking slide,

[0034] Figure 5 In the vertical longitudinal section, a further vertical longitudinal section through the locking device of FIG. 1 is shown.

[0035] Figure 6 A vertical longitudinal section showing a locking device according to a second embodiment of the present invention,

[0036] Figure 7a 、 Figure 7b An exploded view of the locking device is shown,

[0037] Figure 8 A vertical longitudinal section through a locking device according to a third embodiment of the invention is shown. DETAILED DESCRIPTION

[0038] exist Figure 1ashows a perspective view of the locking device 100. The locking device 100 comprises a housing 11, in which and on which the locking components are accommodated. A cover element 26 and a sensor holder 30 are arranged on the front side of the housing 11. The housing 11 has a belt guide space 25 for the tensioning edge of the belt 10 (not shown here). The lower slack edge of the belt 10 can be guided via another belt guide space 25. A projection of the travel device 13, which will be described in detail later, protrudes from the right side of the housing 11. This projection can be actuated to manually release the lock in an emergency.

[0039] The illustrated pawl 18 can lock a belt (not shown) in the belt guide space 25 in a locking direction SR by reducing the width of the belt guide space 25. For this purpose, the pawl 18 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 that faces the pawl 18 in the upper belt guide space 25. The pawl 18 can thereby achieve an advantageously positive locking with the belt 10 in order to secure the belt and thereby lock one or more connected door leaves of the door leaf arrangement.

[0040] Figure 1b A partially exploded view of the locking device 100 is shown. The housing has a rear part 11a, which closes or encloses the rest of the locking device 100 toward the rear. The housing part 11b fastened thereto accommodates components of the locking device 100, namely the actual locking element in the form of a pawl 18, which moves between an unlocked position and a locked position. An actuator 12, exemplarily in the form of a coil with an iron core, is mounted on the side of the housing part 11b facing away from the cover element 26. A travel device 13 interacts electromagnetically with the actuator 12 and, when current is supplied to the actuator 12, moves it to the left or right in the locking direction SR or counter to the locking direction SR, depending on the polarization direction, between a closed position and an open position.

[0041] Two guides 14 are formed on the travel device 13, projecting toward the cover element 26. The guides 14 are pins with a bearing, particularly a rolling bearing, of circular cross-section, mounted thereon for free rotation. The guides 14 are thereby guided in the respective first guide slots 15 of the housing part 11c in or against the locking direction SR. This also guides the travel device 13.

[0042] The locking slide 16 that is present can be vaguely seen between the cover element 26 and the pawl 18 .

[0043] exist Figure 2, a detailed enlarged view of the actuator 12 connected to the travel device 13 of the locking device 100 is shown. The travel device 13 is preferably formed from a ferromagnetic material, and approximately in the center on the right and left are respective sections in the form of travel device elements 13a, between which permanent magnets are arranged in a manner not shown in detail.

[0044] The carriage 13 is guided along the closing direction SR on the side facing away from the housing part 11 c by means of quadruple guide rollers 28 arranged on the actuator 12. 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.

[0045] Figure 3a and Figure 3b The locking device 100 is shown interacting with the belt 10, once in an unlocked position and once in a locked position. A comparison of the figures clearly shows how the second 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 element 14, which is provided on the travel device, is displaced horizontally in and against the locking direction SR. To guide the guide element 14 horizontally in and against the locking direction SR, a first, horizontally extending, straight guide slot 15 is incorporated into the housing, in which the guide element 14 runs, and a second, curved guide slot 17, so that when the guide element 14 is displaced horizontally, the locking slide 16 with the pawl 18 moves toward the belt 10 for locking and away from the belt 10 for unlocking. If a tensile force acts on the belt 10 in the locking direction SR in the locked position of the locking slide 16 , the pawl 18 moves a small catch-up distance along the guide surface 21 in the locking direction SR and squeezes air out of the effective connection between the pawl 18 and the belt 10 .

[0046] Figure 4 A detailed view of a locking device 100 having features essential to the present invention is shown. The housing 11 accommodates the locking slide 16 in a vertically movable manner in the drawing plane via a cover element 26, wherein the locking slide 16 can also perform small horizontal movements relative to a second spring element 24b. The second spring element 24b is formed on the cover element 26 and presses the locking slide 16 to the left.

[0047] The second spring element 24 b on the cover element 26 is arranged in the space between the locking slide 16 and an inner surface 27 of the housing 11 facing the locking slide.

[0048] The first spring element 23 is arranged between the pawl 18 and the locking slide 16 and fixes the pawl 18 in a defined position on the locking slide 16. The locking slide 16 is designed without a slope, and the pawl 18 is therefore prestressed against the stop on the locking slide 16 by means of the first spring element 23. If the pawl 18 is to be inserted into the belt 10 for locking, the pawl 18 can be displaced to the left as the first spring element 23 is compressed and, together with the locking slide 16, to the right as the second spring element 24b is compressed, so that a relative lateral movement between the components between the belt 10 and the pawl 18 is possible when the tooth tips are placed on the tooth tips.

[0049] In the locked position, when a tensile force is applied to the belt 10 to the right, the entire locking slide 16 can be easily displaced to the right along with the pawl 18, while the second spring element 24b is compressed. The guide mechanism 14 can also be moved to the right because the actuator 12 still retains residual magnetism, which can cause the travel device to catch up to the right along with the guide mechanism 14. This allows the pawl 18 to catch up further toward the belt, thereby increasing the clamping force applied to the belt.

[0050] Figure 5 The locking device 100 according to the present invention is shown to illustrate the catch-up effect. The first guide slot 15 is formed with a ramp 20 in the housing 11. At its end facing the second spring element 24b, the guide slot has a region that rises toward the pawl 18. This region forms the ramp 20, which presses the guide mechanism 14 toward the pawl 18 or the upper tensioning edge of the belt 10. The guide mechanism 14 then drives the locking slide 16 in the same direction via the second guide slot 17 (see the figure above). The residual magnetism of the actuator 12 is sufficient to hold the travel device 13 in the rightmost position, achieving the desired effect. 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 further toward the belt 10.

[0051] exist Figure 6 A perspective detail view of the cover element 26 is shown in FIG. The second spring element 24 b is molded on the inside of the cover element 26 and is formed if the cover element 26 is arranged on the housing, as in FIG. Figure 4 As shown in , the second spring element 24 b can then exert a spring action on the locking slide 16 in the gap between the locking slide 16 and the inner surface 27 on the housing 11 .

[0052] Figure 7a and Figure 7bTwo 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 toward one end and closed toward the opposite end. The guide groove 16b is laterally surrounded by two flange-shaped projections 16a extending away from each other.

[0053] The pawl 18 includes mutually facing guide grooves 18b with a C-shaped cross section, which surround the projection 16a. This allows the pawl 18 to be guided along the locking slide 16 in the locking direction SR, but with a small amount of clearance transverse to the locking direction SR and transverse to the projection 16a. The pawl 18 also includes a projection (not shown) formed between and spaced apart from the guide grooves 18b. The projection is received in the guide groove 16b in such a manner that it is guided. At one end, the projection has a protrusion 18a that projects toward the locking slide 16 or the guide groove 16b, thereby forming the ramp according to the present invention.

[0054] A first spring element 23 is tensioned between the projection 18a and the spring stop 29. The first spring element 23 presses the pawl 18 against the locking slide 16 in the closing direction SR.

[0055] In an approximately central region, the locking slide 16 comprises two second guide slots 17 of arcuate curvature, through which the guide element 14 is guided and, by means of bearings, is guided on the inside in the second guide slots 17. The particular curvature of the second guide slots 17 ensures that, when the guide element 14 is moved transversely to the locking direction SR, the locking slide 16 moves with the pawl 18 toward the belt and can thereby clamp the belt.

[0056] 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 .

[0057] To automatically displace air when a tensile force is applied to belt 10 in locking direction SR, projection 18a is guided by a contact section 22 formed on the projection on a guide surface 21 of locking slide 16 facing the projection. Guide surface 21 includes two ramps 19a, 19b, and when a tensile force is applied to belt 10 in locking direction SR, contact section 22 runs obliquely at ramps 19a, 19b, with the first ramp being at projection 18a and the second ramp being at the lateral end of locking slide 16. As a result, air is displaced from belt 10, and a minimum locking force of 1800 N can be maintained.

[0058] The second spring element 24a is provided between the locking slider 16 and the pawl 18 so that the second spring element presses the pawl 18 in the unlocking direction, i.e., acts against the locking direction SR. The second spring element serves as a counterspring relative to the first spring element 23 so that the pawl 18 can be inserted into the belt 10 if the tooth tops are located on the tooth tops between the pawl 18 and the belt 10. 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 to both sides in the locking direction SR despite the defined position to enable insertion.

[0059] Figure 8 An alternative or additional embodiment of the present invention is shown with a vertical longitudinal section through the locking device 100 in the locked position, without showing the belt in the guide space 25. This embodiment shows two ramps 19a and 19b on the locking slide 16, toward which the contact section 22 of the pawl 18 extends. The first spring element 23 presses the pawl 18 against the stronger second spring element 24a. If a tensile force is applied to the belt (not shown) to the right, the pawl 18 also moves to the right due to the compression of the second spring element 24b. Due to the inclination of the ramps 19a and 19b, the pawl 18 moves upward toward the belt on the locking slide 16, thereby displacing any remaining air in the belt guide space. This variant can also include a ramp 20 in the first guide slot 15 in addition to the additional tensioning of the belt according to the present invention.

[0060] The present invention is not limited in its implementation to the preferred exemplary embodiments described above. Rather, numerous variations are conceivable, which can be used with the illustrated solution even in fundamentally different implementations. All features and / or advantages disclosed in the description or drawings, including structural details or spatial arrangements, can be essential to the present invention both individually and in a wide variety of combinations. For example, the second spring elements 24a and 24b can be combined or interchanged. Instead of a positive, positive engagement with the belt, a pure force flow can also be provided.

[0061] Reference Signs List

[0062] 100 Locking device

[0063] 10 belt

[0064] 11 Housing

[0065] 11a-11c Housing components

[0066] 12 Actuators

[0067] 13 Travel device

[0068] 13a Travel device components

[0069] 14 Guidance Agency

[0070] 15 First guide chute

[0071] 16 Locking slide

[0072] 16a Guide protrusion

[0073] 16b guide groove

[0074] 17 Second guide chute

[0075] 18 Pawl

[0076] 18a bulge

[0077] 18b Guide groove

[0078] Slopes 19a and 19b

[0079] 20 Slope

[0080] 21 Guide surface

[0081] 22 contact section

[0082] 23 First spring element

[0083] 24a, 24b second spring element

[0084] 25 Belt guide space

[0085] 26 Cover element

[0086] 27 inside

[0087] 28 guide rollers

[0088] 29 Spring stop

[0089] 30 Sensor holder

[0090] SR locking direction

Claims

1. A locking device (100) for securing 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 wherein at least one guide mechanism (14) is provided on the travel device (13), which guides in a first guide slot (15) in the housing (11), and wherein a locking slide (16) is provided in or on the housing (11), which can be moved toward the belt in a direction of movement to a locking position for locking the belt (10) and can be moved away from the belt to a release position for releasing the belt (10), for this purpose, at least one second guide slot (17) is formed in the locking slide (16), in which the guide mechanism (14) is also guided, and wherein a pawl (18) is accommodated on the locking slide (16), which pawl is formed to engage in the belt (10) and can be displaced on the locking slide (16) in the extension direction of the belt (10), It is characterized by: The first guide slot (15) in the housing has a section extending obliquely toward the pawl (18), thereby forming a ramp (20) in the first guide slot (15), so that when a tensile force is applied to the belt (10) in the locking direction (SR), the pawl (18) is pressed further toward the belt (10) in the locking position by the guide mechanism (14) moving toward the ramp (20).

2. The locking device (100) according to claim 1, It is characterized by: The section extending obliquely toward the pawl (18) is connected to the position of the guide mechanism (14) in the first guide slot (15) which is in the position when the locking slide (16) is in the locking position.

3. The locking device (100) according to claim 1 or 2, It is characterized by: The first guide slot (15) is implemented in a straight line on the movement path of the guide mechanism (14), and the section extending obliquely relative to the pawl (18) encloses an angle of 5° to 45° with the first guide slot, or the oblique section has a curvature radius.

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

5. The locking device (100) according to claim 4, It is characterized by: A second spring element is provided between the locking slide (16) and the pawl (18), which preloads the pawl (18) against the locking direction (SR), wherein the spring force of the second spring element is greater than the spring force of the first spring element (23).

6. The locking device (100) according to claim 4, It is characterized by: A cover element (26) is provided on the housing (11), on which a second spring element is formed.

7. The locking device (100) according to claim 1 or 2, It is characterized by: At least one further ramp (19a, 19b) is formed in the receptacle 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).

8. The locking device (100) according to claim 1 or 2, It is characterized by: 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 direction of extension of the belt (10), wherein at least one further ramp (19a, 19b) is formed in the guide surface (21).

9. The locking device (100) according to claim 8, It is characterized by: The guide surface (21) has a first further slope (19a) and a second further slope (19b) which is spaced apart from the first further slope (19a).

10. The locking device (100) according to claim 8, It is characterized by: The pawl (18) has a counter-guide surface that is substantially complementary to the guide surface (21), wherein the counter-guide surface has at least one contact section (22) for traversing the at least one further ramp (19a, 19b).

11. The locking device (100) according to claim 6, It is characterized by: The second spring element on the cover element (26) is designed as a spring clip, which is arranged or molded on the cover element (26) and is arranged in a gap between the locking slide (16) and an inner surface (27) of the housing (11).

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

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

14. The sliding door apparatus according to claim 13, It is characterized by: 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 pulled open, a pulling force can be generated on the belt (10) in a locking direction (SR).

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