Cam lock

Abstract

The invention relates to a cam lock (11), in particular a safety cam lock, having a lock housing (1) and a locking actuator (4) which is rotatably mounted in the lock housing and which is connected to a locking element (5), in particular to a bolt, the invention relates to a cam lock (1) for locking and unlocking a door, comprising a locking actuator (4) which can be rotated back and forth together with a locking element (5) about an axis of rotation (D) between a locking position and an unlocking position for locking and unlocking the door, having an anti-reversal lock (6) for fixing the locking actuator (4) in position at least in its locking position, the anti-reversal lock (6) has a first fixing element (6.1) and a second fixing element (6.2), and wherein the two fixing elements (6.1, 6.2) interact with each other to prevent accidental rotation of the locking actuator (4) wherein one fixing element (6.1) is arranged to rotate with the locking actuator (4) and the other is arranged on a sleeve (7), the sleeve is arranged in the lock housing in an anti-rotation manner.

Description

Technical Field

[0001] This invention relates to a turnbuckle lock, and more particularly to a security turnbuckle lock having a lock housing and a locking actuator rotatably mounted in the lock housing, the locking actuator being connected to a locking element (particularly the latch), and the locking actuator being rotatable with the locking element about a rotation axis between a locked position and an unlocked position for locking and unlocking a door, the turnbuckle lock having an anti-reverse lock for fixing the locking actuator at least in its locked position, wherein the anti-reverse lock has a first fixing element and a second fixing element, and wherein the two fixing elements interact with each other to prevent accidental rotation of the locking actuator. Background Technology

[0002] Rotary latches are used in various technical fields to lock doors so that they can no longer be opened. In some applications, special care must be taken to ensure that the rotary latch is not accidentally opened. For example, this can happen if the door is subjected to bumps or vibrations, which may cause the locking actuator of the rotary latch to move unexpectedly over a prolonged period of time, and in the worst case, even lead to accidental unlocking.

[0003] To ensure reliable locking in this regard, a so-called safety rotary latch lock is used, which has a safety device, at least in the locked position, so that the rotary latch lock will not be accidentally unlocked even during prolonged vibration or impact. A well-known safety rotary latch lock, proven to be very reliable in practice, is described, for example, in WO 2009 / 103 414 A1. This safety rotary latch lock has an anti-reverse locking mechanism consisting of a first fixing element and a fixed second fixing element, the first fixing element being rotatable with the actuation shaft. The first fixing element is designed as a sliding guide pre-tensioned in the axial direction and angled at 90 degrees at both ends. The second fixing element corresponds to a pin on the housing side guided in the sliding guide, which, when the locked position is reached, automatically moves into the end corner of the sliding guide and thereby interacts with the first fixing element, preventing the locking actuator from rotating and securing it in place. To rotate the locking actuator and move it from the locked position to the unlocked position, the sliding guide or locking actuator must first be moved in the axial direction such that the pin is moved to the upper part of the sliding guide, and the locking actuator can then rotate again.

[0004] While this design reliably prevents accidental movement of the locking actuator and thus accidental unlocking, the need to insert the pin through the housing wall into the sliding guide during assembly is not always straightforward. This is because it is not possible to determine from the outside whether the sliding guide inside the lock housing is aligned to allow the pin to engage; in particular, it is not easy to determine how the position of the sliding guide must be changed to allow the pin to engage. Overall, installation is therefore relatively complex. Summary of the Invention

[0005] Based on this, the present invention sets its own objective as providing a rotary lock, particularly a safe rotary lock, characterized by simpler assembly.

[0006] This task is solved in the type of rotary lock mentioned at the beginning by arranging one fixing element to rotate with the locking actuator, while arranging another fixing element on a sleeve arranged in the lock housing in an anti-rotation manner.

[0007] By arranging one of the fixing elements on a sleeve arranged in an anti-rotation manner within the lock housing, and with the corresponding fixing element also connected to the lock housing in an anti-rotation manner, rotation of the locking actuator can be reliably prevented when the two fixing elements interact. Furthermore, arranging one fixing element on the sleeve allows the two fixing elements to interact with each other even before assembly into the lock housing, thus enabling the locking actuator to be mounted in a fixed position within the lock housing. This significantly simplifies the assembly process overall.

[0008] Regarding the two fixing elements, it has proven advantageous to arrange the first fixing element on the locking actuator. By arranging the second fixing element on the sleeve fixed to the lock housing, the locking actuator can also be fixed relative to the lock housing when the two fixing elements interact. This position locking thus prevents movement of the locking actuator, and therefore also prevents movement of the locking element. The locking actuator can then be fixed in the lock housing so that it cannot rotate.

[0009] Furthermore, it has proven advantageous if the first fixing element is designed as a protrusion. The protrusion can be integrally formed with the locking actuator and, in this respect, can rotate back and forth with it about the axis of rotation. The first fixing element or protrusion can extend radially outward relative to the axis of rotation. Providing two protrusions may be advantageous, with these two protrusions located on opposite sides of the locking actuator relative to the axis of rotation. Overall, the locking actuator can be designed to be axially symmetrical with respect to the axis of rotation. The two protrusions reduce the force acting on each individual protrusion, thereby improving the bearing safety of the locking actuator.

[0010] Regarding the second fixing element, it has proven advantageous to design it as a sliding guide. Therefore, the first fixing element can be guided within the second fixing element or the sliding guide. The sliding guide can be designed such that it allows at least partial relative movement of the first fixing element within the sliding guide and prevents at least partial rotational movement. By preventing rotational movement, the locking actuator can be positioned in a fixed position, preventing accidental movement. Furthermore, the sliding guide also has a guiding function, ensuring that the locking actuator does not tilt during rotational movement.

[0011] It is advantageous if the locking actuator is fixed in both the locked and unlocked positions. This means that when in the locked position, the locking actuator cannot be accidentally moved in the direction of the unlocked position, and when in the unlocked position, the locking actuator cannot be accidentally moved in the direction of the locked position. Therefore, the locking element can be fixed at both ends to prevent accidental rotational movement.

[0012] According to an advantageous further improvement of the invention, a second fixing element for securing the locking actuator in the locked position is provided, having a first fixing profile. Furthermore, the second fixing element may also have a second fixing profile for securing the locking actuator in the unlocked position. Thus, each fixing profile can be assigned to one of the end positions (i.e., the locked position and the unlocked position). The fixing profiles allow the first fixing element to be reliably secured in place, thereby reliably preventing rotational movement of the locking actuator.

[0013] Regarding the locking mechanism, it also proves advantageous if the first fixing element can engage in one fixed profile in the locked position, and particularly in the unlocked position, can additionally engage in another fixed profile. This engagement allows for automatic position locking upon reaching one of the two end positions, preventing the locking actuator from being rotated after engagement. Therefore, manual intervention to fix the position is unnecessary.

[0014] Furthermore, it has proven advantageous if the first fixing element is arranged such that it can move axially between a fixed position and a released position relative to the second fixing element. The first fixing element can be preloaded in the direction of the fixed position. In this respect, the two fixing elements can interact with each other in the fixed position to prevent accidental rotation of the locking actuator, and the locking actuator can rotate about the axis of rotation in the released position.

[0015] This design allows the two fixing elements of the anti-reverse lock to automatically interact with each other to secure the locking actuator when the first fixing element reaches the fixed profile of the second fixing element or one of the fixed profiles. Specifically, this design means that when the first fixing element reaches one of the two fixed profiles, it automatically engages with it due to the movement of the second fixing element. The fixed profiles or both fixed profiles can be designed as fixed profiles in this respect. The first fixing element can move in the axial direction. In this respect, it is only necessary to move or rotate the locking actuator to the position to be secured, and the preload ensures that the anti-reverse lock automatically prevents rotational movement when it reaches the corresponding position. To move or rotate the locking actuator back, the first fixing element must first be moved back to the release position in the axial direction so that the two fixing elements disengage. Springs, particularly helical compression springs, can be provided to achieve preload on the two actuation units or the two fixing elements. The spring can preload the first fixing element to the fixed position and can move it to the release position by pressure that counteracts the spring force. The axial direction refers to movement along the axis of rotation.

[0016] Regarding fixed profiles, it has proven advantageous to design these profiles as notches extending in the axial direction. This design allows the first fixing element to engage with the fixed profile or profile by means of axial movement.

[0017] Furthermore, it has proven advantageous to connect the two fixed profiles to each other via a guide. Thus, the two fixed profiles and the guide can together form a second fixed element or a sliding guide. During rotational movement between the locked and unlocked positions, the first fixed element can move back and forth within the guide. The fixed profiles can represent the two end regions of the guide, making rotation beyond the sliding guide's rotation impossible. The guide can extend in the circumferential direction. Generally, the sliding guide can be designed in a U-shape.

[0018] For locking and unlocking, the first retaining element can move back and forth between two retaining profiles as the locking actuator rotates via the guide. When the first retaining element is in the guide, it is in the released position and can therefore rotate back and forth within the guide between the two end positions. When the first retaining element reaches one of the end positions, it can engage in the corresponding retaining profile due to preload. The first retaining element is then in the fixed position.

[0019] Since two fixed profiles are assigned to two end positions, the distance between the two fixed profiles in the circumferential direction also defines the rotation angle of the locking actuator and the locking element rotatably coupled thereto. It is advantageous if the locking element can move back and forth by 90 degrees between the locked and unlocked positions, so that the distance between the two fixed profiles in the circumferential direction can also be substantially 90 degrees. Therefore, the two fixed profiles can be arranged circumferentially offset from each other by 90 degrees.

[0020] Regarding the design of the second fixing element, it has proven advantageous that the second fixing element has at least one protrusion extending in the radial direction. The protrusion can extend from the inside of the sleeve along the direction of the rotation axis or the actuation axis, such that the first fixing element can engage behind the second fixing element or the corresponding protrusion. Thus, the protrusion can extend into a receiving space of the lock housing, in which the locking actuator can be accommodated. The protrusion can be part of a sliding guide that prevents movement of the first fixing element in a particular direction.

[0021] From a design perspective, it has proven advantageous for the protrusion to have a strip-like geometry. Therefore, the protrusion can extend primarily in the circumferential direction. This means that the geometric extension in the circumferential direction can be greater than the geometric extension in the axial direction. However, the protrusion can also have a block-like geometry. In this design, the geometric extension in the circumferential and axial directions can be approximately the same. Generally, the protrusion can be arranged such that it can be located in the lower half of the receiving space of the lock housing. This allows the actual locking of the locking actuator to occur quite deep inside the lock housing, making it less likely for dust or dirt to enter that area.

[0022] According to an advantageous further improvement, the protrusion is provided with an inner surface designed as a sliding surface on which the locking actuator is guided. Therefore, when actuated or rotated about the axis of rotation, the locking actuator can slide on the sliding surface. Thus, the protrusion can serve as a sliding bearing for the locking actuator (particularly for the first actuation unit). The inner surface can be the surface of the protrusion, which is aligned parallel to the inner surface of the lock housing and thus faces the axis of rotation. If multiple protrusions are provided (as will be described in more detail below), the corresponding sliding surfaces of the protrusions can collectively guide the locking actuator. Advantageously, the protrusions are evenly distributed in the circumferential direction.

[0023] A further advantageous improvement of the invention provides a second fixing element having at least two protrusions spaced apart from each other, with a gap arranged between the ends of the two protrusions. Due to the circumferential arrangement, two gaps can also be provided. The gaps can be located at the same height as the protrusions in the axial direction, and these gaps can be arranged circumferentially between the protrusions or between the ends of two adjacent protrusions. One or more gaps can be designed as a fixed profile, or the fixed profile can be formed by the gap between the ends of the protrusions.

[0024] From a functional perspective, it has proven advantageous if the first fixing element can move into one gap in the unlocked position and into another gap in the locked position (especially if the first fixing element can snap into these gaps). When the first fixing element is in one gap, the protrusion prevents the fixing element from rotating. Therefore, the unlocked position can be assigned to one gap, and the locked position of the fixing element or locking actuator can be assigned to the other gap. The two gaps can be offset from each other in the circumferential direction or arranged at a 90-degree interval, so that the locking actuator can subsequently also rotate 90 degrees back and forth between the locked and unlocked positions. The snap-fit ​​connection can be achieved by pre-tightening the first actuating unit relative to the second actuating unit. This means that the first fixing element can be moved into the gap by a spring disposed between the two actuating units. No further manual intervention is required for this.

[0025] Furthermore, it has proven advantageous if the first retaining element can engage behind the protrusion in the release position. In the release position, the locking actuator and the first retaining element can rotate back and forth between the locked and unlocked positions. During this process, the first retaining element can engage behind the protrusion, such that the first retaining element is subsequently positioned between the protrusion and the bottom of the lock housing. Due to the preload of the first retaining element, it can be pressed against the corresponding lower side of the protrusion from below (i.e., from the bottom of the lock housing) with a certain force. This preload then causes the first retaining element to automatically engage upon reaching the gap, thus securing it between the two protrusions. Therefore, the protrusion can act as a guide, or the first retaining element can be guided behind the protrusion in the release position, and the two gaps or retaining profiles can be connected to each other via the guide. This allows the first retaining element to move back and forth between the two gaps in a guided manner.

[0026] According to a further advantageous improvement, the second fixing element has four protrusions spaced apart from each other, with gaps between the ends of the protrusions. A particular feature of this design is its variability in height. This is because the four protrusions also create four gaps, thus creating four different positions where rotational movement of the first fixing element can be prevented. The gaps can be arranged offset from each other by 90 degrees in the circumferential direction and are distributed at regular intervals around the circumference. Overall, this design allows the same rotary latch lock to be used for both left-hinged and right-hinged doors.

[0027] Furthermore, it has proven advantageous if at least one protrusion has a stop surface for limiting the rotational movement of the locking actuator in the release position. The stop prevents excessive rotation and ensures that the first retaining element can move from the release position to the fixed position between the protrusions when the stop is reached. Due to the stop, the stop on the lock housing side that limits the movement of the locking element can sometimes be omitted. Advantageously, the locking element is rigidly coupled to the first retaining element in a rotational manner. This means there is no gearbox between them, but rather that rotation of the actuating unit at a certain angle results in the locking element performing the same movement. In this respect, limiting the movement of the actuating unit or the first retaining element can also simultaneously achieve reliable rotational limitation of the locking element.

[0028] Regarding the locking actuator, having a first actuating unit and a second actuating unit has proven advantageous. Furthermore, the first fixing element can be part of the first actuating unit. Therefore, the locking actuator can consist of two independent components. The two actuating units can be arranged one after the other in the lock housing along the axial direction. The first actuating unit can be arranged further outward in the lock housing than the second actuating unit. The second actuating unit can be fixed in the lock housing axially via the first actuating unit. In terms of design, the two actuating units can be cylindrical and rotationally symmetrical about the axis of rotation.

[0029] The rotary coupling of the first and second actuating units has also proven advantageous. Thus, the two actuating units can rotate together about a rotation axis. For the rotary coupling, the second actuating unit can have a profile (particularly a square profile) on the side facing the first actuating unit, and the first actuating unit can have a corresponding receiving section (particularly in the form of a square hole) that can be adapted to the geometry of the profile. The two actuating units can be connected to each other via the receiving section and the profile in a rotary coupling manner.

[0030] The second actuating unit can be connected to the locking element, particularly the latch, especially at the end opposite the profile, in an anti-rotation manner. At this end, the second actuating unit can also have a profile (particularly in the form of a square profile), on which the locking element can be arranged in an anti-rotation manner. Thus, the locking element can rotate in the same direction about the rotation axis together with the locking actuator or with both actuating units.

[0031] To secure the locking element to or onto the second actuating unit, the second actuating unit may have a threaded hole at its end into which a bolt can be screwed to secure the locking element axially. Therefore, the locking element can first be pushed axially against the second actuating unit or its corresponding profile in an anti-rotation manner, and then secured axially to the profile via bolts. In the locked position, the locking element can engage behind or within the door frame, preventing the door from moving relative to the door frame and thus preventing it from opening. If the locking element is rotated to the unlocked position via the locking actuator or both locking units, the lock is released, and the door can move relative to the door frame and be opened.

[0032] To rotate the locking actuator, the first actuation unit can be rotated back and forth about the axis of rotation from the outside (e.g., using a tool or directly by hand). The first actuation unit may have an actuating segment for this purpose. For example, the actuating segment can be designed as a protruding square, allowing the locking actuator and locking element to be rotated between a locked and unlocked position using a corresponding tool. Alternatively, actuation via different types of tools or keys can also be provided. Actuation via a latch or a rotatable door handle is also possible.

[0033] Furthermore, it has proven advantageous if the first actuating unit is arranged such that it can move axially relative to the second actuating unit. In this way, the first retaining element can move back and forth between a released position and a fixed position. The rotational coupling of the two actuating units can be designed so that torque can be transmitted through it, but axial relative movement is permitted. A spring can be placed between the two actuating units, preloading the first actuating unit relative to the second actuating unit. The spring ensures that when the end position is reached, the first actuating unit and the first retaining element can automatically interact with or engage with the fixed profile. The spring can push the two actuating units apart, thereby preloading the first retaining element outward.

[0034] For example, to rotate the locking actuator from the locked position to the unlocked position, the first actuating unit must first be moved axially relative to the second actuating unit. During this process, the first actuating unit can be pressed into the lock housing by axial pressure. During this movement, the first retaining element can enter the sliding guide of the second retaining element from its fixed profile, thus enabling the rotational movement of the locking actuator. When the first retaining element is positioned in the guide of the second retaining element, neither the first retaining element nor the first actuating unit can move axially. Maintaining pressure is not required during rotation.

[0035] Furthermore, regarding the two actuating units, it has proven advantageous if the first actuating unit has a hole (particularly a cylindrical hole) and / or the second actuating unit has a hole (particularly an elongated hole). A first fixing element can be specified to extend through the holes of the two actuating units, thereby connecting the two actuating units to each other. The holes of the two actuating units can be aligned to allow connection via the first fixing element. Thus, relative rotational movement can be prevented by extending the first fixing element through the two actuating units. The first fixing element can be designed as a pin, which can particularly have a circular cross-section. The first fixing element can protrude laterally (particularly on both sides) relative to the locking actuator or the two actuating units, and this protruding area can serve as a bulge that can interact with the second fixing element, as described above. Therefore, the protruding portion of the first fixing element can be designed as a bulge. In this design, the bulge is not integrally connected to the locking actuator.

[0036] Designing the hole in the second actuating unit as an elongated hole allows for axial movement of the two actuating units relative to each other. A pin or a first retaining element can move relative to the second actuating unit along with the first actuating unit. The first retaining element can move within the elongated hole, which in this respect can function as a guide. In the fixed position, the first retaining element can abut against one end of the elongated hole (particularly the outer end), and in the released position, the first retaining element can abut against the other end of the elongated hole (particularly the inner end). Therefore, the end of the elongated hole can serve as a stop for limiting the axial movement of the first actuating unit.

[0037] Furthermore, it has proven advantageous to design the locking actuator such that the first actuating unit must first move in the axial direction to rotate. Due to the axial movement, the two fixed elements can disengage, so the anti-reverse lock no longer prevents the movement of the locking actuator. This design allows for a push-turn mechanism, requiring the locking actuator to be pressed down before rotating, specifically whether rotating the locking actuator from the locked position to the unlocked position or vice versa.

[0038] Furthermore, providing two first fixing elements and two second fixing elements (each of which interacts with a second fixing element) has proven advantageous. The two pairs of fixing elements create redundancy, thereby achieving reliable positional fixation of the locking actuator. The fixing elements can be designed as described in more detail above and below. Advantageously, the two first fixing elements are opposite each other relative to the axis of rotation. The second fixing elements can also be arranged symmetrically relative to the axis of rotation, or arranged on opposite sides of the axis of rotation.

[0039] According to an advantageous further improvement of the invention, it is proposed that the locking actuator be rotatably mounted in the sleeve. Thus, the sleeve can function as a pivot bearing and ensure reliable rotational movement about the axis of rotation.

[0040] Regarding the sleeve, it has also proven advantageous to restrict the axial movement of the two actuating units. Both actuating units can be mounted in the sleeve, thereby allowing the first actuating unit to move between a released position and a fixed position, but preventing any further axial movement. The second actuating unit can be arranged so that it is immovable in the axial direction relative to the lock housing and relative to the sleeve.

[0041] According to an advantageous further improvement of the invention, it is proposed that the sleeve be designed as a one-piece sleeve. This design makes assembly very easy. This is because the locking actuator or two actuator units can be assembled in the sleeve first, and then the sleeve and locking actuator can be arranged together in the lock housing as an assembly unit. The one-piece, integral sleeve ensures simple assembly and reliable handling.

[0042] Furthermore, for the sleeve, having a closed cylindrical section (especially in the circumferential direction) and a flange section projecting radially from the cylindrical section has proven advantageous. Thus, the sleeve can have a basin-like geometry. The outer surface of the cylindrical section can be fitted to the inside of the lock housing, such that the cylindrical section or its outer surface can rest as flat as possible against the inside of the lock housing during assembly. The inner diameter of the lock housing and the outer diameter of the cylindrical section can therefore be equal or approximately equal. Thus, the cylindrical section can serve a guiding function during assembly into the lock housing. The flange section can project radially from its outer end relative to the cylindrical section in the circumferential direction. Thus, during assembly, the flange section is visible from the outside, while the cylindrical section can be arranged invisibly within the lock housing. The lock housing can have a notch adapted to the flange section, such that the flange section is flush with the top of the lock housing. Subsequently, the sleeve or flange section can be arranged within the contour of the lock housing.

[0043] According to an advantageous further improvement of the invention, the sleeve (particularly the flange section) can be connected to the lock housing in a form-fit manner. This form-fit connection ensures that the sleeve cannot rotate relative to the lock housing. Therefore, the sleeve can provide reliable, fixed support for the rotatable locking actuator. This also ensures fixed and predetermined locked and unlocked positions and prevents slippage.

[0044] From a design perspective, it has proven advantageous for the sleeve to have at least one (particularly four) lugs projecting in the axial direction. The lugs can engage in receiving sections on the lock housing to connect the sleeve to the lock housing in an anti-rotation manner. Thus, the lugs and receiving sections ensure a reliable positive connection between the sleeve and the lock housing. One or more lugs can extend in the axial direction, i.e., in the direction of the axis of rotation or actuation shaft. One or more receiving sections can be designed to correspond to one or more lugs and therefore also extend in the axial direction. One or more receiving sections can be designed as notches. It has been proven advantageous to have four lugs and corresponding four receiving sections in ensuring a reliable positive connection and preventing relative movement. Therefore, the sleeve can be secured to prevent rotation relative to the lock housing. One or more lugs and one or more receiving sections can each be designed as anti-rotation elements. In this case, the lugs represent the anti-rotation elements on the sleeve side, and the receiving sections represent the anti-rotation elements on the lock housing side. Further explanation regarding the design of the anti-rotation elements is provided below.

[0045] Regarding the arrangement of one or more lugs, it has proven advantageous to place them on the flange section of the sleeve. Therefore, the flange section reliably prevents any movement of the sleeve as a whole. The lugs can be arranged uniformly around the circumference of the flange section. Thus, notches can be arranged at the outer end of the lock case so that the lugs can engage in the corresponding notches. Furthermore, the sleeve can also be designed as a multi-part assembly.

[0046] According to a particularly advantageous further improvement of the invention, it is proposed that the sleeve comprises two sleeve segments that can be connected to each other. This two-piece design has proven advantageous in terms of assembly and allows for easy arrangement of the locking actuator or two actuation units within the sleeve. For this purpose, the two actuation units can be first arranged in one of the two sleeve segments, and then in a next step, the other sleeve segment can be connected to the first sleeve segment to secure the two actuation units within the sleeve. The sleeve can be designed as a tube or cylindrical shell and divided longitudinally into two sleeve segments. The two sleeve segments can be designed in a shell shape to allow rotation of the locking actuator or two actuation units. Each sleeve segment can have a second fixing element. This means that the first fixing element can be guided within one of the two sleeve segments.

[0047] Furthermore, it has proven advantageous to have two sleeve sections surrounding the locking actuator. The locking actuator can be arranged in the sleeve or in both sleeve sections before being installed into the lock housing, and in a next step, the locking actuator can be installed into the lock housing together with the sleeve.

[0048] With a favorable design, the two sleeve segments can be designed as identical components. This has proven particularly advantageous in terms of manufacturing costs. Each sleeve segment can have a 180-degree circumferential angle, resulting in a closed hollow cylinder shape when the two sleeve segments are joined together. To achieve reliable fastening within the lock housing, each sleeve segment can be specified to be equipped with at least one lug to ensure reliable rotational fastening.

[0049] According to a further advantageous embodiment of the invention, the sleeve is designed as a four-piece sleeve, consisting of four sleeve segments that can be connected to each other. This four-piece design may be advantageous in terms of assembly. To simplify assembly, the four sleeve segments can be connected to each other. In this regard, please refer to the description of the two-piece sleeve above. It is also advantageous that the sleeve segments of the four-piece sleeve are designed as identical components, which has particular advantages in terms of production and manufacturing costs. In this design, each sleeve segment can have a 90-degree circumferential angle, such that connecting the four sleeve segments forms a closed hollow cylinder in which the locking actuator can be arranged. Each sleeve segment can be designed with a lug to achieve a reliable positive connection with the lock housing.

[0050] Furthermore, it has proven advantageous to axially fix the second actuation unit within the sleeve. In this respect, the second actuation unit cannot move in the axial direction, but can only rotate back and forth about the axis of rotation.

[0051] To achieve axial locking, it has proven advantageous for the second actuating unit to have a flange projecting radially and guided by a rotary guide on the sleeve. The flange and rotary guide enable reliable rotational movement while preventing relative axial movement between the sleeve and the first actuating unit. The rotary guide can be designed as a radially extending notch, such as a groove, and the flange can be fitted into this notch in a form-fitting manner. The sleeve can be axially secured in the lock housing via the flange.

[0052] For connecting two sleeve segments, it has proven advantageous if they can be joined to each other in a form-fitting manner (particularly through mortise and tenon joints). Therefore, each sleeve segment can have a groove at one circumferential end and a tongue at the corresponding opposite circumferential end. This complementary design allows the two sleeve segments to be assembled in a fixed position. The tongue of one sleeve segment can engage in the groove of the other sleeve segment. This design enables easy assembly of the components, even blind assembly.

[0053] Further favorable developments envision the two sleeve sections being lockable together. This design further simplifies assembly, as there is no risk of the two sleeve sections accidentally separating when the lock case is inserted. The two sleeve sections can be locked together by inserting them together, eliminating the need for additional tools for connection.

[0054] Regarding the arrangement of the sleeve within the lock housing, it has proven advantageous to arrange it in an anti-rotation manner using an anti-rotation device. This prevents the sleeve from rotating when the locking actuator is turned. Instead, the sleeve can act as a fixed pivot point for the locking actuator. To achieve an anti-torsional arrangement within the lock housing, the sleeve and lock housing can be connected to each other in a form-fit manner. During assembly, the sleeve can be inserted axially into the lock housing until it reaches its final position and rests against the bottom of the lock housing. The sleeve can be secured in its final position at the latest to prevent rotation.

[0055] Regarding the anti-rotation device, it has proven advantageous in design to have anti-rotation elements on both the lock case side and the sleeve side, whereby the two anti-rotation elements can interact with each other in a form-fitting manner within the lock case to fix the sleeve and prevent rotation. Thus, the two anti-rotation elements can fix the sleeve relative to the lock case, allowing the sleeve to be arranged in a non-rotatable manner within the lock case.

[0056] From a design perspective, designing the anti-rotation element on the lock case side as a raised element has proven advantageous. The raised design reliably prevents the sleeve from rotating. The raised element can protrude from the cylindrical inner surface of the lock case, so that the inner surface, designed to be rotationally symmetrical about the axis of rotation, is not rotationally symmetrical in the raised area. Conversely, the raised element can create a non-circular cross-section. In this respect, the raised element can protrude relative to the circular cross-section of the lock case. Furthermore, the raised element can be designed in a circular chord-like flattening manner, so that the cross-section of the lock case in this flattened area is correspondingly non-circular.

[0057] Regarding the anti-rotation element on the sleeve side, designing it as a notch has proven advantageous. The notch can be formed by cutting or flattening the cylindrical outer surface of the sleeve in certain areas. In this respect, the notch can also be designed as a flattened portion. The notch can be adapted to a protrusion on the lock case, such that the notch and protrusion can be designed to correspond to each other. In particular, the protrusion and notch can interact in a manner of overlapping flat surfaces. This reliably prevents the sleeve from rotating within the lock case. The notch can be located in the connecting region of two sleeve segments, such that each of the two sleeve segments can have a portion of the notch in its circumferential end region, or the two end regions can be flattened accordingly. It is also advantageous if the lock case has not just one protrusion but two protrusions. The two protrusions can be identical in design and, like the notch, can be positioned relative to each other with respect to the axis of rotation. When the sleeve is pushed into the lock case during assembly, the protrusions and the notches or flattened areas can contact each other, preventing the sleeve from rotating. In alternative designs, the lock case can also have a notch, while the sleeve has a protrusion.

[0058] When the sleeve is installed in the lock case, the protrusion can be used as a guide so that the sleeve can only be installed in the lock case in one predetermined position (or in two predetermined positions due to its rotationally symmetrical design).

[0059] Furthermore, it has proven advantageous if one or more protrusions on the lock case side have radially inward thickenings in the region at the bottom of the housing. The thickenings can be arranged in the lower region of the protrusion, such that the protrusion can be L-shaped in longitudinal section. This thickening increases the contact area between the lock case and the sleeve to prevent rotational movement, ensuring that the sleeve will not slip even under significant force and deformation, but will still not rotate within the lock case. To accommodate the thickening, the sleeve or two sleeve sections can have corresponding notches in the lower region, into which the thickening can be fitted in a form-fit manner. The thickening can extend from below (i.e., axially) into the sleeve, thereby preventing rotational movement.

[0060] Furthermore, it has proven advantageous for the second actuating unit to extend through the bottom of the lock housing and be axially secured within the lock housing by a locking element. Thus, the flange of the second actuating unit retains the sleeve within the lock housing, and once the second actuating unit is axially secured, it can no longer be pulled out of the lock housing. Since the first actuating unit is guided through the sleeve via the first fixing element, the first actuating unit cannot be pulled out of the lock housing. The second actuating unit can extend through the bottom of the lock housing and connect to the locking element at its end. Therefore, the locking element secures the second actuating unit axially within the lock housing, such that essentially the entire locking actuator (including the sleeve) can be secured within the lock housing via the locking element. Therefore, no additional connection to the lock housing is required.

[0061] According to an advantageous further development of the invention, the two actuating units and the sleeve form a pre-assembleable assembly unit that can be mounted in the lock housing. This design simplifies assembly because the individual components (i.e., the actuating units and the sleeve) can be assembled in the lock housing before being actually assembled into it, and then inserted into the lock housing as a whole in the axial direction. Axial fixation in the lock housing can then be achieved by mounting a locking element on the second actuating unit portion protruding from the lock housing.

[0062] Regarding the lock housing, it has proven advantageous to have a flange that contacts the outer side of the door when the lock housing is installed on it. The flange can rest on the outer side of the door, thus acting as a stop for positioning the lock housing. To securely attach the lock housing to the door, it can also have threads, allowing a nut to be screwed onto the threads to secure the lock housing to the door. After the nut is tightened, the door is fixed between the flange and the nut, preventing any relative movement of the lock housing.

[0063] Furthermore, the lock housing may have a bottom and a recess in the bottom through which the locking actuator (particularly the second actuation unit) can extend. The bottom may be designed to project radially inward, forming an axial stop for the sleeve during assembly. Overall, the lock housing may have a cylindrical geometry, and the axis of rotation may extend centrally through the lock housing. To prevent gas exchange, a sealing ring may also be provided, which is arranged in the lock housing before the sleeve and locking actuator are assembled. The sealing ring seals the second actuation unit relative to the lock housing.

[0064] According to an advantageous further development of the invention, the lock housing has two stops for limiting the rotational movement of the locking element. One stop can be associated with a locked position, and the other with an unlocked position, such that the two stops ensure that the locking element can only rotate back and forth within a rotational angular range between the locked and unlocked positions. The two stops can be arranged circumferentially offset from each other by slightly more than 90 degrees, such that the rotational angular range of the locking element and the locking actuator is correspondingly limited to 90 degrees. The locking element can have a stop lug, which can be designed to project axially parallel to the axis of rotation and contact one of the stops in both the locked and unlocked positions. Due to the width of the stop lug, the two stops can be offset circumferentially by slightly more than 90 degrees to ensure 90-degree rotational movement.

[0065] Furthermore, regarding the task mentioned at the beginning, a door with a rotary latch is proposed, wherein the rotary latch is designed as described above. This results in the advantages of the rotary latch already described above. The door may have a hole through which the rotary latch can extend. Therefore, the rotary latch can be operated from the outside of the door, and the locking element can be arranged on the inside of the door and engage with or hook behind the door frame to lock the door. The term "door" also includes trapdoors, covers, hatches, windows, etc. Attached Figure Description

[0066] Further details and advantages of the invention will now be explained in more detail with reference to the illustrative embodiments shown in the accompanying drawings. These drawings illustrate:

[0067] Figure 1 An exploded three-dimensional view of the rotary tongue lock is shown;

[0068] Figure 2 It shows according to Figure 1 The rotary latch, some of the components of which are shown as assembled;

[0069] Figure 3 A cross-sectional view of a rotary tongue lock is shown;

[0070] Figure 4 A three-dimensional detailed view of the sleeve section is shown;

[0071] Figure 5 A detailed perspective view of the lock case is shown;

[0072] Figures 6a to 6c Various perspective views of a rotary latch with an integrated sleeve are shown;

[0073] Figures 7a to 7c Various perspective views of a rotary latch lock with a two-piece sleeve are shown;

[0074] Figures 8a to 8c Various perspective views of a rotary lock with a four-piece sleeve are shown. Detailed Implementation

[0075] Figure 1 The diagram shows an exploded view of a rotary latch 11, which is used to lock a door against a door frame. The rotary latch 11 has a locking element 5 in the form of a latch, which can rotate back and forth between a locked position and an unlocked position about a rotation axis D. In the locked position, the latch engages behind the frame of the door (not shown), fixing the door relative to the door frame and preventing it from opening. When the latch rotates back to the unlocked position, the door can move relative to the frame and open.

[0076] To allow the locking element 5 to rotate accordingly, the rotary latch 11 has a locking actuator 4, which is essentially composed of a first actuating unit 2 and a second actuating unit 3. The second actuating unit 3 extends through the bottom 1.2 of the lock housing 1 and is rotatably connected to the locking element 5 at its end, allowing the locking element 5 to rotate together with the two actuating units 2 and 3 about the axis of rotation D. To connect the locking element 5 to the locking actuator 4 or the second actuating unit 3, the second actuating unit 3 has a profile 3.3 with a square outline at its end, onto which the locking element 5 can be pushed in an anti-rotation manner. The corresponding profile 3.3 and the correspondingly designed receiving section of the locking element 5 can be... Figure 1 and Figure 2 As clearly seen in the diagram, to secure the locking element 5 to the second actuating unit 3 in the axial direction, the second actuating unit 3 has a hole at its end into which a bolt 5.2 can be screwed. The locking element 5 is then securely connected to the second actuating unit 3 or the locking actuator 4 via the bolt 5.2.

[0077] On the opposite side, the locking actuator 4 or the first actuation unit 2 has an actuation segment 2.2, through which the locking actuator 4 can be rotated back and forth about the rotation axis D using a suitable tool, thereby causing the locking element 5 to also rotate back and forth about the rotation axis D.

[0078] To achieve torque transmission between the two actuation units 2 and 3, and thus also from the actuation section 2.2 to the locking element 5, they are rotatably connected to each other via a square profile 3.1 arranged on the second actuation unit 3. The first actuation unit 2 has a correspondingly designed receiving section for accommodating the profile 3.1, which can, for example, be in... Figure 3 As seen in the sectional view, profile 3.1 is housed in a receiving section in a shape-fitting manner, allowing torque to be transmitted, and the two actuating units 2 and 3 rotate synchronously about the rotation axis D for locking and unlocking.

[0079] A special feature of the rotary latch 11 is that it is designed as a safety rotary latch, meaning that it is not possible to simply turn the locking actuator 4 from the locked position to the unlocked position, or from the unlocked position to the locked position. Instead, the locking actuator 4 and the locking element 5 are both secured in place in the locked and unlocked positions by an anti-reverse lock 6, thereby preventing accidental movement, such as movement that may occur due to vibration.

[0080] The anti-reverse lock 6 is basically composed of two components: a first fixing element 6.1 arranged on the first actuation unit 2 and a second fixing element 6.2 arranged on the sleeve 7.

[0081] In this embodiment, the first fixing element 6.1 is a protrusion integrally formed on the first actuation unit 2, which extends radially relative to the rotation axis D, for example, it can be... Figure 1 As seen in the attached diagram, the second fixing element 6.2 is designed as a sliding guide, in which the first fixing element 6.1 is guided. This sliding guide is particularly useful in… Figure 4 As seen in the illustration.

[0082] Sleeve 7 consists of two sleeve sections 7.1 and 7.2, one of which is located in... Figure 4 As shown in the diagram. The two sleeve sections 7.1 and 7.2 are designed as identical parts, therefore for... Figure 4 The explanation applies accordingly to the two sleeve sections 7.1 and 7.2. Sleeve section 7.1 has a generally U-shaped guide rail consisting of three parts: two axially extending fixed profiles 6.21 and 6.22, and a guide member 6.23 connecting the two fixed profiles 6.21 and 6.22, which extends circumferentially relative to the axis of rotation D. When the first fixed element 6.1 is located in the guide member 6.23, the locking actuator 4 can rotate freely back and forth about the axis of rotation D. The sleeve 7 is arranged in the lock housing 1 in an anti-rotation manner as described in more detail below, so that the sleeve 7 does not rotate together.

[0083] The lock housing 1 is cylindrical and has threads 1.3 on its outer side. For example, a nut can be screwed onto the threads 1.3 to secure the lock housing 1 to the door.

[0084] Two fixed profiles 6.21 and 6.22 are arranged in the end region of the guide 6.23 and extend axially relative to the axis of rotation D. Each fixed profile 6.21 and 6.22 is assigned to one of the end positions, namely a locked position or an unlocked position. Thus, when the locking actuator 4 or the first fixing element 6.1 reaches the locked position, the fixing element 6.1 is located in the region of one fixed profile 6.21, and when it reaches the unlocked position, it is correspondingly located in the region of the other fixed profile 6.22.

[0085] The two actuation units 2 and 3 of the locking actuator 4 are rotatably connected to each other in the manner described above, but the first actuation unit 2 can move axially (i.e., along the direction of the rotation axis D) between a released position and a fixed position relative to the second actuation unit 3. The corresponding receiving section of contour 3.1 and the first actuation unit 2 is designed to allow relative axial movement, as shown in... Figure 2 As shown in the diagram, a spring 9.1 is positioned between the two actuation units 2 and 3. This spring 9.1 biases the first actuation unit 2 axially outward to a fixed position. Therefore, as... Figure 4 As shown, the first fixing element 6.1 in the sliding guide is pushed upward by the spring 9.1. Therefore, when it reaches one of the two fixed contours 6.21 and 6.22, the first fixing element 6.1 automatically moves to a fixed position and thus into fixed contour 6.21 or 6.22, and then it is no longer possible to rotate the locking actuator 4 back. Instead, the fixing element 6.1 is locked in one of the fixed contours 6.21 and 6.22.

[0086] To rotate the locking actuator 4 back again, the snap-fit ​​connection between the two fixing elements 6.1 and 6.2 must first be released, and the fixing element 6.1 must first be moved back axially to the horizontal release position of the guide 6.23. For this, the first actuating unit 2 must be moved inward axially against the force of the spring 9.1, i.e., towards the second actuating unit 3. Only when the first actuating unit 3 moves accordingly and thus the snap-fit ​​connection is released can the locking actuator 4 be rotated again about the rotation axis D via the actuating section 2.2, thereby also moving the locking element 5. For user convenience, this mechanism is also indicated on the flange 1.4 of the lock housing 1 with "push and turn," for example, in... Figure 2 or Figure 5 As shown in the diagram, this means that pressure must be applied first before the locking actuator 4 can rotate back and forth between the locked and unlocked positions.

[0087] This means that the locking actuator 4 and the locking element 5 are fixed in place in both the locked and unlocked positions, and there is no risk of accidental movement of the elements even in the event of vibration or impact.

[0088] The lock housing 1 has a circumferential notch, the end regions of which each define a stop 1.5. The stops 1.5 are arranged at intervals of slightly more than 90 degrees in the circumferential direction, such that the locking element 5, with its axially projecting stop lug 5.1 along the direction of the lock housing 1, contacts one stop 1.5 in the locked position and the other stop 1.5 in the unlocked position, and can rotate back and forth within a 90-degree range. The positions of the stops 1.5 are adapted to the positions of the two fixed profiles 6.21, 6.22, such that when the locking element 5 abuts against one of the stops 1.5, the first fixed element 6.1 for preventing the locking actuator 4 from rotating engages in the fixed profiles 6.21, 6.22.

[0089] By comparison Figure 1 and Figure 2 The assembly of the rotary latch 11 is described below. First, before connecting the two actuation units 2 and 3 to form the locking actuator 4, the spring 9.1 is placed between the two actuation units. In the next step, two shell-shaped sleeve sections 7.1 and 7.2 are then placed around the locking actuator 4 and connected to each other, such that the locking actuator 4 is arranged in the cylindrical sleeve 7.

[0090] Sleeve 7 or two sleeve sections 7.1, 7.2 have a rotary guide 7.3 in the lower region, the rotary guide 7.3 in Figure 4 As can be seen in the illustration, the rotary guide 7.3 is at least partially designed as a groove extending particularly around the circumference. The second actuating unit 3 has a radially outwardly projecting flange 3.2, which... Figure 1 The illustration and Figure 3 As can be seen in the cross-sectional view, the flange 3.2 connects the second actuating unit 3 to the sleeve 7 or its rotary guide 7.3 in the axial direction, preventing them from moving relative to each other in the axial direction.

[0091] Since the second actuating unit 3 extends through the bottom 1.2 of the lock housing 1 and is fixed in the axial direction by bolts 5.2, the sleeve 7 is also fixed in the axial direction. Although the second fixing element 6.2 or the sliding guide allows a certain amount of relative axial movement between the first fixing element 6.1 and the first actuating unit 2, the first actuating unit 2 is still guided in the sleeve 7 via the second fixing element 6.2, so the first actuating unit 2 cannot be pulled out of the lock housing 1 after it is installed in the lock housing 1.

[0092] Two sleeve segments 7.1 and 7.2 are equipped with form-fitting elements at their circumferential end regions, allowing them to be joined together in a form-fitting manner to form sleeve 7. Specifically, each sleeve segment 7.1 and 7.2 has a tenon 7.5 at one end region and a groove 7.4 at the other end region. When assembling sleeve segments 7.1 and 7.2, the tenon 7.5 engages with the corresponding groove 7.4, allowing the sleeve segments 7.1 and 7.2 to be joined together. Then, the locking actuator 4 is fixed in the sleeve 7, and the two actuation units 2 and 3 can no longer be separated from each other in the axial direction. The assembly unit 10, consisting of the sleeve 7 and the locking actuator 4 arranged therein, can... Figure 2 As seen in the illustration.

[0093] Once the components are assembled in this manner, they can be pushed together as assembly unit 10 into the lock housing 1 in the axial direction. To prevent gas exchange between the interior and exterior, a sealing ring 9 is provided, which is disposed between the lock housing 1 or the bottom 1.2 of the lock housing 1 and the second actuating unit 3 extending through the bottom 1.2. The position of the sealing ring 9 can also be... Figure 3 As seen in the sectional view.

[0094] To prevent the sleeve 7 from rotating when the locking actuator 4 is rotated, an anti-rotation device 8 is provided. This anti-rotation device 8 mainly consists of an anti-rotation element 8.1 on the lock housing side and an anti-rotation element 8.2 on the sleeve side. These two anti-rotation elements 8.1 and 8.2 can interact in a form-fitting manner after the assembly unit 10 or the sleeve 7 is installed into the lock housing 1, so that the sleeve 7 is arranged in the lock housing 1 in a non-rotatable manner.

[0095] The anti-rotation element 8.1 is designed as a protrusion, so that the lock housing 1 no longer has a circular free internal cross-section in the area of ​​the anti-rotation element 8.1. On the other hand, the anti-rotation element 8.2 on the sleeve side is designed as a notch, which is formed by removing tangential material from the outside of the sleeve 7. Therefore, the removed area forms a notch relative to the remaining circular sleeve cross-section. When the sleeve 7 is inserted into the lock housing 1, the two anti-rotation elements 8.1, 8.2 come into contact with each other, and their respective flat surfaces fit together. The non-circular cross-section prevents the sleeve 7 from rotating in the lock housing 1.

[0096] Furthermore, sleeve 7 has two corresponding anti-rotation elements 8.2 or two corresponding flattening areas on its outer side, which are opposite to each other relative to the rotation axis D. The anti-rotation elements 8.2 are arranged in the two opposite end regions of sleeve sections 7.1 and 7.2, such as... Figure 4 As shown in the diagram. Accordingly, the lock case 1 also has two anti-rotation elements 8.2, which are also opposite to each other relative to the axis of rotation D. Therefore, this position is adapted to the position of the anti-rotation element 8.1 of the sleeve 7.

[0097] Furthermore, the anti-rotation element 8.1 on the lock case side, or the two anti-rotation elements 8.1 in the bottom 1.2 region of the lock case 1, have a thickened portion 8.11, which can... Figure 5 As shown in the illustration, the thickened portion 8.11 engages from below into the sleeve 7, or engages into... Figure 4 As can be seen in the illustration, the axial recess 8.21 ensures that the sleeve 7 is fixed in the lock housing 1 and cannot rotate. The sleeve 7 has two corresponding recesses 8.21 adapted to the geometry of the thickened portion 8.11, wherein portions of the recesses 8.21 are arranged in the corresponding end regions of the sleeve sections 7.1 and 7.2, as shown in... Figure 4 As can be seen in the illustration. This reliably prevents the sleeve 7 from slipping or undergoing unwanted rotational movement even when subjected to greater forces.

[0098] For example, as in Figure 3 As shown in the diagram, the rotary latch lock has not just one anti-reverse lock 6, but two anti-reverse locks 6, and correspondingly two first fixing elements and two second fixing elements 6.1, 6.2. Each sleeve segment 7.1, 7.2 has a second fixing element 6.2 or a sliding guide in which the associated first fixing element 6.1 is guided. The corresponding first and second fixing elements 6.1, 6.2 are opposite to each other relative to the axis of rotation D, such that the two first fixing elements 6.1 are also guided in the same direction in the sliding guide and the second fixing element 6.2.

[0099] Now, Figures 6a to 6c The illustration shows a rotary lock 11 that is slightly different from the rotary lock 11 shown in the above figures. This difference will be explained in more detail below; for similarities, please refer to the explanation above.

[0100] First, the locking actuator 4 is again composed of two actuation units 2 and 3, namely, the first actuation unit 2 arranged on the outside and the second actuation unit 3 arranged on the inside. Figure 1 In the design shown, the two actuation units 2 and 3 are connected to each other by a rotational connection via a square profile 3.1, while... Figures 6a to 6c The design shown also provides a corresponding rotary connection, allowing the two actuating units 2 and 3 to rotate together only about the axis of rotation D. However, a square profile 3.1 is not provided for this purpose; instead, the rotary connection is achieved by means of a first fixing element 6.1, which is designed as a pin. This pin extends laterally through the two actuating units 2 and 3, thereby connecting the two actuating units 2 and 3 to each other in a form-fitting manner.

[0101] The first actuating unit 2 has a hole 2.3 extending transversely to the rotation axis D, and the second actuating unit 3 has a hole 3.4 designed as an elongated hole. The elongated hole allows for a certain relative movement of the first actuating unit 2 with respect to the second actuating unit 3 in the axial direction. This is because when the first actuating unit 2 presses inward in the axial direction against the force of the spring 9.1 to move from the fixed position to the released position, the first fixing element 6.1 moves toward the bottom 1.2 of the lock housing 1 in the elongated hole until the first fixing element 6.1 reaches the lower end of the elongated hole. Therefore, the two ends of the elongated hole act as stops, with the first fixing element 6.1 resting against the lower end of the elongated hole in the released position when the locking actuator can rotate about the rotation axis D, and against the upper end in the fixed position.

[0102] The first fixing element 6.1 protrudes from opposite sides of the actuating units 2 and 3, such that the protruding portion of the fixing element 6.1 is designed as a bulge, essentially conforming to... Figure 1 The fixing element 6.1, which is integrally connected to the first actuation unit 2, is arranged in the same manner. Since the first fixing element 6.1 not only rotatably connects the two actuation units 2 and 3 to each other, but also prevents the two actuation units 2 and 3 from separating from each other in the axial direction, therefore... Figures 6a to 6c In the design shown, it is no longer necessary for the sleeve 7 to hold the two actuation units 2 and 3 together in the axial direction or to prevent them from separating axially.

[0103] In this respect, assembling the one-piece sleeve 7 may be simpler than assembling the multi-piece sleeve. Besides... Figure 6a The illustration in the image, Figure 6c The one-piece sleeve 7 can also be seen in the diagram on the right. Sleeve 7 has an integral can-shaped geometry and is characterized by a hollow cylindrical section 7.6 and a flange section 7.7, which is located at the outer end of the cylindrical section 7.6 and projects radially outward from it. Sleeve 7 is designed to be completely within the contour of the lock housing 1 during assembly. The outer surface of the cylindrical section 7.6 is approximately flush with the inner side 1.1 of the lock housing 1, or the cylindrical section 7.6 and the lock housing 1 are arranged concentrically relative to each other.

[0104] The lock case has a circumferential notch in the outer end region or in the flange 1.4 region, which, measured from the outer surface of the lock case 1, has a geometric extension with the same thickness as the flange segment 7.7. This allows the outer surface of the flange segment 7.7 to be flush with the outer surface of the lock case 1 during assembly. Figure 6a In the illustrated embodiment, therefore, the words "Push + Turn" also appear on the outer surface of flange segment 7.7, rather than on the lock housing 1 itself, as shown in Figure 5 As can be seen in the illustration.

[0105] To prevent the sleeve 7 from rotating when the locking actuator 4 is rotated, and to ensure that it is connected to the lock housing 1 in an anti-rotation manner, the sleeve 7 has a number of lugs 7.71 protruding in the axial direction in the region of the flange section 7.7. These lugs 7.71 or protrusions extend a short distance along the outer side of the cylindrical section 7.6 and engage in a correspondingly shaped receiving section 1.8 of the lock housing 1, which is also designed as a notch and extends in the axial direction, so that the receiving section 1.8 is parallel to the axis of rotation D.

[0106] As in Figure 6c As clearly seen in the diagram, there are a total of four corresponding lugs 7.71, and correspondingly four receiving sections 1.8 are provided on the lock housing side, which realizes the shape-fitting rotational connection between the sleeve 7 and the lock housing 1. In this respect, the lugs 7.71 and the receiving sections 1.8 each serve as anti-rotation elements 8.1 and 8.2, as already referred to above. Figure 4 and Figure 5 The diagram illustrates this.

[0107] To prevent rotational movement of the locking actuator 4 when it is in the fixed position, a second fixing element 6.2 is arranged inside the sleeve 7. The specific design of the fixing element 6.2 is as follows: Figure 6c As can be seen in the diagram on the right, a total of four protrusions 6.3 are provided, evenly distributed around the circumference, extending from the cylindrical segment 7.6 along the axis of rotation D. Corresponding gaps 6.4 exist between the protrusions 6.3, or at the ends of the protrusions 6.3, offset from each other by 90 degrees due to their regular arrangement in the circumferential direction.

[0108] In the fixed position, the first fixing element 6.1 or its lateral protrusion is now positioned in the gap 6.4, reliably preventing rotational movement of the first fixing element 6.1 and consequently the locking actuator 4. To move the locking actuator 4 and the locking element 5 from the unlocked position to the locked position, or vice versa, the first fixing element 6.1 must first be moved out of the gap 6.4 between the protrusions 6.3. This can be done by manually pressing the first actuating unit 2 from behind, causing it to move inward along with the first fixing element 6.1, i.e., towards the bottom 1.2 of the lock housing 1. This also moves the first fixing element 6.1 out of the area between the protrusions 6.3. In the released position, the locking actuator 4 can rotate about the axis of rotation D, and the first fixing element 6.1 can move behind the protrusions 6.3 or between the protrusions 6.3 and the bottom 1.2 of the lock housing 1.

[0109] However, the spring 9.1 then engages the first fixing element 6.1 in the next gap 6.4 when the first fixing element 6.1 reaches that gap. This is because the spring 9.1 pushes the first actuating unit 2 and thus also pushes the first fixing element 6.1 outward, thereby pushing it against the protrusion 6.3 from below in the released position. When the gap 6.4 is reached, the first fixing element 6.1 engages in the gap 6.4 under the drive of the spring 9.1, thus preventing the locking actuator 4 from rotating further. In order to further rotate the locking actuator 4 or rotate the locking actuator 4 back, the external actuating unit 2 must first be moved back into the lock housing 1 by means of pressure in the manner described above, so as to release the rotational fixation in the adjacent protrusion 6.3 or gap 6.4.

[0110] The protrusion 6.3 has a strip-shaped geometry and extends from the wall of the sleeve 7 along the direction of the rotation axis D, thus entering the receiving space 1.6 of the lock housing 1. The inner surface of the protrusion 6.3 pointing in the direction of the rotation axis D is designed as a sliding surface 6.31, which together form a sliding bearing for the locking actuator 4. The locking actuator 4 or the first actuation unit 2 is centered by the protrusion 6.3 or the sliding surface 6.31 and slides on the sliding surface 6.31 during rotational movement about the rotation axis.

[0111] Figures 7a to 7c The illustration shows a design with a two-piece sleeve 7, wherein the design of the locking actuator 4 is consistent with... Figures 6a to 6c This corresponds to the design in the original text. Therefore, for this two-piece sleeve 7, it is not necessary for the sleeve 7 to hold the two actuating units 3 and 4 together in the axial direction, because this task is performed by the pin-shaped first fixing element 6.1. (This is in accordance with...) Figures 6a to 6c Similar to the design, the second fixing element 6.2 of the sleeve 7 has several fixing profiles 6.21, 6.22, which are formed by protrusions 6.3 and gaps 6.4 arranged between the protrusions 6.3.

[0112] As from Figure 7a As shown in the diagram, each of the two sleeve segments 7.1 and 7.2 has two protrusions 6.3, resulting in four protrusions 6.3 and four corresponding gaps 6.4 in this design. The first fixing element 6.1 can engage into the gaps 6.4. Unlike the one-piece sleeve 7, the two-piece sleeve 7 shown does not have a flange segment 7.7. Instead, the two sleeve segments 7.1 and 7.2 have a shell-like geometry, so that the two sleeve segments 7.1 and 7.2 form a hollow cylinder when assembled, as referenced above. Figure 1 and Figure 4 The illustration explains it.

[0113] To ensure that the two-piece sleeve 7 is also arranged in an anti-rotation manner within the lock housing 1, each sleeve section 7.1, 7.2 has at least one lug 7.71 protruding in the axial direction. Figure 7c As can be clearly seen in the diagram, each sleeve segment 7.1 and 7.2 has a lug 7.71 in the middle area and half a lug 7.71 at each end area, so that during assembly, a total of four lugs 7.71 are evenly distributed circumferentially, basically conforming to... Figures 6a to 6c The design shown is the same.

[0114] Unlike the lug 7.71 which is arranged on the flange section 7.7, the lug 7.71 on the two-piece sleeve 7 is arranged on the cylindrical section 7.6, i.e., at the lower end. Correspondingly, the lock housing 1 also has a correspondingly designed receiving section 1.8 in the bottom 1.2 region, into which the lug 7.71 can engage in a form-fitting manner to prevent the sleeve 7 from rotating within the lock housing 1. These receiving sections 1.8 are... Figure 7b The right-hand illustration clearly shows a perspective sectional view of the inner side of the bottom of the lock case 1.2.

[0115] Figures 8a to 8c The illustration now shows a further design of the rotary tongue lock 11, which is largely consistent with... Figures 7a to 7c The design shown corresponds to this. The main difference is that sleeve 7 is designed as a four-piece sleeve 7. This means that according to Figure 7a The sleeve segments 7.1 and 7.2, as indicated in the diagram, are further subdivided. Therefore, each of the four sleeve segments 7.1 and 7.2 has a 90-degree circumferential angle and correspondingly has a protrusion 6.3 and a lug 7.71, as shown in... Figure 8c This can be clearly seen in the illustration.

[0116] Before being installed into the lock housing 1, the two actuating units 2 and 3 are connected to each other via the first fixing element 6.1. Then, the four sleeve sections 7.1 and 7.2 are installed from the outside, such that the protruding end of the first fixing element 6.1 is arranged in the guide 6.23 of the second fixing element 6.2 on the sleeve side. The assembly unit 10 can then be installed as a whole into the lock housing 1, and the lug 7.71 of the sleeve 7 engages in the receiving section 1.8 of the lock housing 1. During assembly, the lower end of the second locking actuator 4 extends through the bottom recess 1.7 of the lock housing 1 and then connects to the locking element 5 at the end, such that it is directly rotatably connected to the locking actuator 4, and a rotational movement of the locking actuator 4 at a certain angle directly causes a corresponding rotational movement of the locking element 5 at the same angle. The locking element 5 then prevents axial movement of the locking actuator 4 or prevents the assembly unit 10 from being pulled out of the lock housing 1, because it does not fit through the recess 1.7 of the lock housing 1.

[0117] In summary, the rotary latch 11 reliably prevents accidental rotation of the locking actuator 4 and the corresponding locking element 5, whether in the locked or unlocked position. Furthermore, the sleeve 7 allows for relatively easy installation within the lock housing 1. Figure label: 1 Lock case 1.1 Inner side 1.2 Bottom 1.3 Threads 1.4 Flange 1.5 Stopping component 1.6 Capacity 1.7 Notch 1.8 Accommodation Section 2 First Coherent Motion Unit 2.1 Accommodation Section 2.2 Actuation segment 2.3 Hole 3 Second Actuation Unit 3.1 Outline 3.2 Flange 3.3 Outline 3.4 Holes 4. Locking actuator 5 Locking elements 5.1 Stop lug 5.2 Bolts 6 Anti-reverse lock 6.1 First fixed element 6.2 Second fixing element 6.21 First Fixed Profile 6.22 Second Fixed Profile 6.23 Guide components 6.3 Protrusion 6.31 Sliding Surface 6.4 Clearance 7 sleeves 7.1 Sleeve Section 7.2 Sleeve Section 7.3 Rotary Guide 7.4 Groove 7.5 Tenon 7.6 Cylindrical segment 7.7 Flange Section 7.71 Protruding Ear 8 Anti-rotation device 8.1 Anti-rotation element 8.11 Thickened section 8.2 Anti-rotation element 8.21 Notch 9. Sealing ring 9.1 Springs 10 Assembly Units 11. Rotary tongue lock D. Rotation axis

Claims

1. A rotary latch lock, particularly a security rotary latch lock, the rotary latch lock having a lock housing (1) and a locking actuator (4) rotatably mounted in the lock housing (1), the locking actuator (4) being connected to a locking element (5), particularly to the latch, and the locking actuator (4), together with the locking element (5), being capable of rotating back and forth about a rotation axis (D) between a locked position and an unlocked position for locking and unlocking a door, the rotary latch lock having an anti-reverse lock (6) for securing the locking actuator (4) in place at least in its locked position, wherein, The anti-reverse lock (6) has a first fixing element (6.1) and a second fixing element (6.2), wherein the two fixing elements (6.1, 6.2) interact with each other to prevent accidental rotation of the locking actuator (4). Its features are, One fixing element (6.1) is arranged to rotate together with the locking actuator (4), while another fixing element (6.2) is arranged on the sleeve (7), which is arranged in the lock housing in an anti-rotation manner.

2. The rotary tongue lock according to claim 1, characterized in that, The first fixing element (6.1) is designed to be protruding.

3. The rotary lock according to any one of the preceding claims, characterized in that, The second fixing element (6.2) is designed as a sliding guide.

4. The rotary lock according to any one of the preceding claims, characterized in that, The second fixing element (6.2) has a first fixing profile (6.21) and a second fixing profile (6.22), the first fixing profile (6.21) for fixing the locking actuator (4) in the locked position, and the second fixing profile (6.22) for fixing the locking actuator (4) in the unlocked position, wherein the first fixing element (6.1) is capable of engaging in one fixing profile (6.21) in the locked position and is capable of engaging in the other fixing profile (6.22) in the unlocked position.

5. The rotary lock according to any one of the preceding claims, characterized in that, Two fixed profiles (6.21, 6.22) are connected to each other via a guide (6.23), wherein the first fixed element (6.1) is able to move back and forth between the two fixed profiles (6.21, 6.22) via the guide (6.23) when the locking actuator (4) rotates.

6. The rotary lock according to any one of the preceding claims, characterized in that, The second fixing element (6.2) has at least one protrusion (6.3) extending in the radial direction.

7. The rotary tongue lock according to claim 6, characterized in that, The protrusion (6.3) has a strip-shaped geometry.

8. The rotary tongue lock according to claim 6 or 7, characterized in that, The protrusion (6.3) has an inner surface designed as a sliding surface (6.31), on which the locking actuator (4) is guided.

9. The rotary lock according to any one of claims 6 to 8, characterized in that, The second fixing element (6.2) has at least two protrusions (6.3), wherein the protrusions (6.3) are spaced apart from each other, and a gap (6.4) is arranged between the ends of the two protrusions (6.3).

10. The rotary tongue lock according to claim 9, characterized in that, The first fixing element (6.1) is capable of engaging in one gap (6.4) in the unlocked position and in another gap (6.4) in the locked position.

11. The rotary lock according to any one of claims 6 to 10, characterized in that, The first retaining element (6.1) is capable of engaging behind the protrusion (6.3) in the release position.

12. The rotary lock according to any one of the preceding claims, characterized in that, The second fixing element (6.2) has four protrusions (6.3), wherein the protrusions (6.3) are spaced apart from each other, and gaps (6.4) are arranged between the ends of the protrusions (6.3).

13. The rotary lock according to any one of the preceding claims, characterized in that, The first fixing element (6.1) is arranged to be movable in the axial direction between a fixed position and a released position relative to the second fixing element (6.2), wherein the fixing element (6.1) is biased in the direction of the fixed position, wherein the two fixing elements (6.1, 6.2) interact with each other in the fixed position to prevent accidental rotation of the locking actuator (4), and wherein the locking actuator (4) is rotatable about the rotation axis (D) in the released position.

14. The rotary lock according to any one of the preceding claims, characterized in that, The locking actuator (4) has a first actuation unit (2) and a second actuation unit (3), wherein the first fixing element (6.1) is part of the first actuation unit (2).

15. The rotary tongue lock according to claim 14, characterized in that, The first actuation unit (2) is rotatably connected to the second actuation unit (3), wherein the first actuation unit (2) is arranged to be movable in the axial direction relative to the second actuation unit (3).

16. The rotary lock according to any one of the preceding claims, characterized in that, The locking actuator (4) is rotatably mounted in the sleeve (7).

17. The rotary lock according to any one of the preceding claims, characterized in that, The sleeve (7) has at least one, particularly four, axially projecting lugs (7.71) that can engage in a receiving section (1.8) on the lock housing side to connect the sleeve (7) to the lock housing (1) in an anti-rotation manner.

18. The rotary lock according to any one of the preceding claims, characterized in that, The sleeve (7) is designed as a one-piece sleeve (7).

19. The rotary lock according to any one of the preceding claims, characterized in that, The sleeve (7) has a cylindrical section (7.6) that is closed in the circumferential direction and a flange section (7.7) that protrudes radially from the cylindrical section (7.6).

20. The rotary tongue lock according to claim 19, characterized in that, The flange segment (7.7) can be connected to the lock housing (1) in a form-fit manner.

21. The rotary lock according to any one of claims 17 to 20, characterized in that, The lugs (7.1), and in particular a plurality of the lugs (7.1), are arranged on the flange section (7.7).

22. The rotary lock according to any one of the claims, characterized in that, The sleeve (7) consists of two sleeve segments (7.1, 7.2) that can be connected to each other, wherein the two sleeve segments (7.1, 7.2) are designed as identical components.

23. The rotary tongue lock according to claim 22, characterized in that, The two sleeve sections (7.1, 7.2) can be connected to each other, particularly via tenons and groove connectors, and can be locked together.

24. The rotary lock according to any one of the preceding claims, characterized in that, The sleeve (7) is designed as a four-piece sleeve (7) and consists of four sleeve segments (7.1, 7.2) that can be connected to each other, the four sleeve segments (7.1, 7.2) being specifically designed as identical components.

25. The rotary lock according to any one of the preceding claims, characterized in that, The sleeve (7) is arranged in the lock case (1) in an anti-rotation manner via an anti-rotation device (8).

26. The rotary tongue lock according to claim 25, characterized in that, The anti-rotation device (8) has an anti-rotation element (8.1) on the housing side and an anti-rotation element (8.2) on the sleeve side, wherein the two anti-rotation elements (8.1, 8.2) can interact with each other in a form-fitting manner to fix the sleeve (7) in the lock housing (1) in an anti-rotation manner.

27. The rotary lock according to any one of claims 14 to 26, characterized in that, The second actuation unit (3) extends through the bottom (1.2) of the lock housing (1) and is fixed in the lock housing (1) in the axial direction via the locking element (5), wherein the sleeve (7) is fixed in the lock housing (1) in the axial direction via the second actuation unit (3).

28. The rotary lock according to any one of claims 14 to 27, characterized in that, The two actuation units (2, 3) and the sleeve (7) form an assembly unit (10) that can be pre-assembled and can be installed in the lock housing (1).

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