Locking device for a movable vehicle roof and movable vehicle roof

Abstract

A locking device (10) for a movable vehicle roof (20), comprising a locking hook (12) and a locking bolt (14), wherein the locking hook (12) engages the locking bolt (14) in a closed and locked state of the vehicle roof (20), wherein the locking hook (12) is arranged on the vehicle side on a cross member (30) and the locking bolt (14) is arranged on the roof side of the vehicle roof (20), wherein a drive (16) is coupled to the locking hook (12) via coupling elements (18) and moves the locking hook (12) between a rest position, a waiting position, a closed position and a locked position, characterized in that the locking hook (12) is arranged in a receptacle (32) of the cross member (30) in the rest position, wherein a cover (33) in the rest position of the locking hook (12) covers the receptacle (32) covers.

Description

[0001] The invention relates to a locking device for a movable vehicle roof according to the preamble of claim 1 and a corresponding movable vehicle roof according to the preamble of claim 11.

[0002] Locking devices for a movable vehicle roof are known in numerous variations. These locking devices can comprise a locking hook and a locking bolt, with the locking hook engaging the locking bolt when the vehicle roof is closed and locked. In this way, the movable vehicle roof is detachably fixed to a body component of the corresponding vehicle when closed and locked.

[0003] Corresponding movable vehicle roofs are also known in numerous variations and comprise at least a roof cap, a convertible top frame, at least one covering roof element and at least one locking device which, in the closed state, detachably fixes the vehicle roof to a vehicle body.

[0004] From DE 10 2012 108 531 A1, a movable vehicle roof is known which includes a convertible top frame that is adjustable between a closed position spanning the vehicle interior and a released position opening the vehicle interior. With respect to a vertical longitudinal center plane of the vehicle, the vehicle roof comprises a linkage assembly on each side, to which a locking unit is assigned. The locking unit is adjustable between a locked position and an unlocked position by means of an actuating device. In the closed position of the convertible top frame, the locking unit secures a front mirror, which connects the two linkage assemblies, to a front cowl of the vehicle via a locking hook. The locking hook is located on the roof side.

[0005] From DE 10 2013 100 868 A1, a convertible vehicle is known which includes an openable soft top. The soft top is adjustable between a closed position spanning the vehicle interior and a stowed position that opens the vehicle interior upwards. It comprises a soft top frame which, with respect to a vertical longitudinal center plane of the vehicle, includes a frame assembly on each side, which is pivotably mounted on a rear-facing, vehicle-fixed main bearing. In the closed position of the soft top, the frame assembly extends through a frame opening located in a vehicle edge area, which can be covered by a flap assembly in the stowed position of the soft top. The soft top also includes a locking assembly that secures the soft top in its stowed position.

[0006] From DE 10 2013 113 388 A1 a locking device for a convertible top is known, which is adjustable between a closed position covering a vehicle interior and a stowed position releasing this interior and which has a rigid roof element on its front edge, on which the locking device is arranged to fix the closed position to a fixed vehicle structure.The locking device comprises a base fixed to the roof element and an operating lever pivotably connected to the base fixed to the roof element for actuating the locking device, which can pivot between a locking and a release position, a push button element by which the operating lever can be released from the locking position for actuation, a spring element cooperating with the push button element, which biases the push button element towards a zero position, and a detent element which secures the operating lever in the locking position.The spring element is designed as a leaf spring and the locking element is a locking lug which is formed integrally with the leaf spring and is arranged in such a way that it engages with an engagement element of the roof element-fixed base in the locked position of the operating lever and disengages from the engagement element of the roof element-fixed base by actuating the push button element, so that the operating lever can be pivoted into a release position.

[0007] From DE 10 2015 202 185 B3, a locking device is known which comprises a roof-side locking mechanism for an opening convertible top and a cover for the roof-side locking mechanism. The cover has a cover shell with a flap that can be opened and closed via a lever system.

[0008] From DE 10 2005 034 723 A1 a convertible vehicle is known with a roof whose front end of the roof is held in the closed position by means of securing devices which extend through the side pillars of the windshield frame.

[0009] From DE 10 2015 216 923 A1 a system for detecting the positions of a locking element of a motor vehicle with a folding roof relative to the locking mechanism is known.

[0010] From DE 199 44 615 A1 a lock for a pivoting motor vehicle convertible top for catching a bracket arranged on a convertible top is known.

[0011] From DE 297 03 603 U1, a locking device for a convertible top that can be detachably fixed to a body frame component is known. The locking device comprises two lateral retaining elements associated with the convertible top and the body frame component, respectively, which, in the closed position of the convertible top, secure it to a body frame component, and a central locking element. The locking element comprises a catch hook that pivots about an axis extending substantially horizontally and parallel to the longitudinal axis of the vehicle and which interacts with a support to lower and secure the convertible top.

[0012] German patent DE 10 2005 034 726 A1 discloses a convertible vehicle with a roof that can be secured to an upper cross member of the windshield frame and a generic locking device for a movable roof. The locking device comprises a locking hook and a locking bolt. In a closed and locked position, the locking hook engages the locking bolt. The locking hook is mounted on a cross member on the vehicle side, and the locking bolt is mounted on the roof side. A drive mechanism is coupled to the locking hook via coupling elements and moves the locking hook between different positions.

[0013] The invention is based on the objective of providing a locking device for a movable vehicle roof which reduces the weight of the vehicle roof while maintaining reliable fixation of the vehicle roof to a vehicle body in the closed state.

[0014] The invention also aims to provide a movable vehicle roof which has a reduced weight and which can be reliably fixed to a body in a closed state.

[0015] According to the invention, the problems are solved by providing a locking device for a movable vehicle roof with the features of claim 1 and by providing a movable vehicle roof with the features of claim 11. Advantageous embodiments and further developments of the invention are specified in the dependent claims.

[0016] To provide a locking device for a movable vehicle roof that reduces the roof's weight while maintaining reliable fixation to the vehicle body in the closed position, a locking hook is mounted on a crossmember on the vehicle side, and the locking bolt is mounted on the roof side. A drive mechanism is coupled to the locking hook via coupling elements and moves the locking hook between a rest position, a waiting position, a closed position, and a locked position. Advantageously, the position of the locking hook can be varied via the drive mechanism. Furthermore, a gearbox can be arranged between the drive mechanism and at least one coupling element. The drive mechanism and the coupling elements are advantageously located within the crossmember of the vehicle body, in which the locking hook is also located.This advantageously allows for a further reduction in the weight of the movable vehicle roof. Furthermore, the locking hook is arranged in a receptacle in the crossmember in its rest position, with a cover plate concealing the receptacle when the locking hook is in its rest position. The locking hook is in its rest position when the vehicle roof is open. When the vehicle roof is open, the side of the crossmember facing the roof is visible from the outside. Therefore, the cover plate conceals an opening for the locking hook and improves the appearance of the crossmember when the vehicle roof is open. Additionally, the cover plate advantageously prevents the ingress of dirt or moisture into the receptacle.

[0017] In order to provide a movable vehicle roof which has a reduced weight and which can be reliably fixed to a body in a closed state, the vehicle roof includes a locking device which has a locking hook arranged on a cross member on the vehicle side and a locking bolt arranged on the roof side of the vehicle roof.

[0018] In the following, a movable vehicle roof is understood to be a vehicle roof that can be moved between a closed state, covering the vehicle interior, and an open state, exposing the vehicle interior. For this purpose, the movable vehicle roof includes a roof cap facing a body panel. In the closed state, the roof cap is secured to this body panel by a locking mechanism. When the vehicle roof opens, the roof cap can be moved away from the body panel. When the vehicle roof closes, the roof cap can be moved towards the body panel. The vehicle roof also includes a convertible top frame to which at least one covering roof panel is attached. The movable vehicle roof can be designed as a so-called soft top or a hard top.In a soft top, at least one covering roof element is made of convertible top fabric, forming the outer skin of the vehicle roof and foldable between the frame's struts. In a hard top, at least one covering roof element is a rigid roof segment that can be pivoted by the frame.

[0019] The term "locking device" as used below refers to an assembly comprising a locking hook and a locking bolt. When the vehicle roof is closed and locked, the locking hook engages the locking bolt. Since one element of the locking device is located on the vehicle side and the other on the roof side, the movable vehicle roof is fixed to the vehicle body when closed. The locking hook can be moved to release the locking bolt. This allows the locking mechanism to be released and the vehicle roof to be moved.

[0020] Advantageously, the weight of the roof cap, and thus the weight of the vehicle roof, can be reduced by arranging the lighter locking bolt on the roof side of the vehicle roof or roof cap instead of the locking hook. Since the locking hook is located on the crossmember on the body side, a corresponding drive and coupling elements for moving the locking hook are also located on the crossmember on the body side. This reduces the moving mass of the roof cap and its deflection in the transverse direction of the vehicle, thereby advantageously facilitating the closing of the roof while driving at speeds below 50 km / h.Furthermore, reinforcements to the roof cap, convertible top frame, or at least one covering element, which would otherwise hinder lateral deflections of the vehicle roof during driving, can be omitted. Eliminating these reinforcements allows for a further advantageous reduction in the vehicle roof's weight. This enables the optimization of the vehicle roof components in terms of stiffness and weight. Additionally, the roof cap's design can be geometrically modified, improving occupant headroom when the vehicle roof is closed. Since the locking principle employed in the inventive locking device involves a locking hook engaging or releasing a locking bolt, reliable locking and unlocking of the corresponding movable vehicle roof according to the invention is ensured.

[0021] In a further advantageous embodiment of the locking device according to the invention, the locking hook can be rotatably mounted about a fixed pivot axis and, upon transitioning from the rest position to the waiting position, push the cover away and, in the waiting position, project out of the receptacle. Advantageously, the opening of the receptacle can be easily released by moving the locking hook, thereby pushing away the cover. The locking hook can remain in the waiting position until the vehicle roof or the roof cap with the locking bolt is at a predetermined distance from the locking hook or the cross member.

[0022] In a further advantageous embodiment of the locking device according to the invention, the locking hook, in the closed position, can engage the locking bolt and pull the vehicle roof towards the cross member. In this case, the locking hook provides the drive for the closing movement of the vehicle roof in the final stage of the movement. Because the locking hook engages the locking bolt, a reliable closing of the vehicle roof can be achieved advantageously.

[0023] In a further advantageous embodiment of the locking device according to the invention, the drive and a first coupling element, which is connected to the drive via a gear, can have a first over-center position in the locked position. Additionally or alternatively, a second coupling element and a third coupling element, which is connected to the second coupling element and to the locking hook, can have a second over-center position in the locked position. An over-center position is understood here to be a state in which movement of the locking hook and the coupling elements from the locked position is blocked, thus preventing an unintentional unlocking movement.As an alternative or additional safeguard against an unintentional unlocking movement, a guide contour can be formed on the locking hook, which, in combination with a predetermined position of the locking bolt in relation to the pivot point of the locking hook in the locked position, results in a closing torque.

[0024] In a further advantageous embodiment of the locking device according to the invention, a centering receptacle can be arranged on the cross member, into which a centering element arranged on the vehicle roof can be inserted during the closing movement of the vehicle roof. The centering element can be designed as a bolt or as a pin. The centering receptacle can have beveled or funnel-shaped walls that guide the centering element and thereby enable alignment or guidance of the vehicle roof connected to the centering element. This advantageously facilitates the engagement of the locking bolt by the locking hook, since the vehicle roof with the locking bolt moves towards the cross member and the locking hook with a predetermined movement defined by the centering element and the centering receptacle.

[0025] In a further advantageous embodiment of the locking device according to the invention, the cross member can have at least one stop against which at least one element of the vehicle roof rests when the vehicle roof is closed. The centering receptacle can form a stop for the centering element. In addition, a stop for the vehicle roof can be arranged, for example, next to the receptacle for the locking hook.

[0026] In a further advantageous embodiment of the locking device according to the invention, at least one sensor can indicate the current position of the locking hook and / or the centering element. The respective displayed position can then be evaluated to trigger the various movements of the locking hook.

[0027] An embodiment of the invention is shown in the drawing and is explained in more detail in the following description. In the drawing, identical reference numerals denote components or elements that perform the same or analogous functions. Here, the drawing shows: Fig. 1 A schematic perspective view of a partially transparent crossbeam with the vehicle-side components of an embodiment of a locking device according to the invention for a movable vehicle roof in a rest position Fig. 2 a schematic perspective view of the partially transparent crossbeam with the locking device according to the invention Fig. 1 in a waiting position, Fig. 3 a schematic perspective view of a partially transparent section of an embodiment of a vehicle roof according to the invention with an embodiment of a locking device according to the invention in a locked position, and Fig. 4 a schematic perspective detail view of the locking device according to the invention Fig. 3 in a locked position.

[0028] As from Fig. 1, Fig. 2, Fig. 3 to Fig. As can be seen in Figure 4, a locking device 10 for a movable vehicle roof 20 in the illustrated embodiment comprises a locking hook 12 and a locking bolt 14. In a closed and locked state of the vehicle roof 20, the locking hook 12 engages the locking bolt 14.

[0029] In this case, the locking hook 12 is located on the vehicle side on a cross member 30 and the locking bolt 14 is located on the roof side of the vehicle roof 20.

[0030] In the illustrated embodiment, the movable vehicle roof 20 comprises a roof cap 21, a convertible top frame (not shown in detail), at least one covering roof element (not shown in detail), and at least one releasable locking device 10, which, in the closed state, releasably fixes the vehicle roof 20 to a vehicle body.

[0031] As from Fig. 1, Fig. 2, Fig. 3 to Fig. As can be seen further in Figure 4, the cross member 30 in the illustrated embodiment is designed as a windshield support or windshield cowl against which a windshield 31 rests with its upper edge and is attached.

[0032] As from Fig. 1, Fig. 2, Fig. 3 to Fig. As can be seen further in Figure 4, a drive 16 is coupled to the locking hook 12 via several coupling elements 18 and moves the locking hook 12 between a in Fig. 1 shown resting position, one in Fig. 2 shown waiting positions, one not shown pulling position and one in Fig. 3 and Fig. 4. Locking position shown. In the illustrated embodiment, the drive 16 has a gear 16.1 which is rotatably mounted at its center about a fixed first axis of rotation. In the illustrated embodiment, the gear 16.1 is part of a transmission for the drive 16. The transmission can be designed, for example, as a transmission or reduction transmission. In the illustrated embodiment, the locking hook 12 is coupled to the drive 16 and to the gear 16.1, respectively, via three coupling elements 18.1, 18.2, 18.3. Offset outwards from the center point, the gear 16.1 is connected to a first coupling element 18.1 via a movable first pivot bearing DL1. The first coupling element 18.1 is L-shaped, with the shorter leg connected at one end to the gear 16 via the movable first pivot bearing DL1.1 is connected and the longer leg is connected at one end region to a second coupling element 18.2 via a movable second pivot bearing DL2. In the illustrated embodiment, the second coupling element 18.2 is designed as an equilateral triangle rotatably mounted about a fixed second axis of rotation D2, which has a connection area at each of its vertices. A first connection area of ​​the second coupling element 18.2 is connected to the longer leg of the first coupling element 18.1 via the movable second pivot bearing DL2. A second connection area of ​​the second coupling element 18.2 is rotatably mounted about the fixed second axis of rotation D2. As shown in the illustration. Fig. 1, Fig. 2, Fig. 3 to Fig. As can be seen further in Figure 4, the fixed second axis of rotation D2 is arranged between a first retaining plate 11.1 and a second retaining plate 11.2. A third connection area of ​​the second coupling element 18.2 is connected via a sliding third pivot bearing DL3 to a first end area of ​​an arc-shaped third coupling element 18.3. At its second end area, the third coupling element 18.3 is connected to the locking hook 12 via a sliding fourth pivot bearing DL4. The locking hook 12 is also rotatably mounted about a fixed third axis of rotation D3. Analogous to the fixed second axis of rotation D2, the fixed third axis of rotation D3 is arranged between the first retaining plate 11.1 and the second retaining plate 11.2, which is designed as a fixed triangle. The two retaining plates 11.1 and 11.2 are fixed to the crossbeam 30 by suitable connection techniques. The coupling elements 18.1, 18.2, 18.3 transmit the rotary motion of the gear 16.The rotational movement of gear 16.1 about the fixed first axis of rotation D1 is transferred to the first coupling element 18.1, which in turn pivots the second coupling element 18.2 about the fixed second axis of rotation D2. This pivots the second coupling element 18.2, which in turn moves the third coupling element 18.3. The third coupling element 18.3, in turn, pivots the locking hook 14 about the fixed third axis of rotation D3. When the locking hook 12 moves from its rest position to the locked position, gear 16.1 of the drive 16 rotates counterclockwise about the fixed first axis of rotation D2. This causes gear 16.1 to move the first coupling element 18.1 to the left in the illustration. This movement of the first coupling element 18.1 rotates the second coupling element 18.2 clockwise about the fixed second axis of rotation D2. This makes the third coupling element 18.In the illustration, the locking hook 12 is shifted to the right, pressed against it, and causes the locking hook 12 to tilt about the fixed third axis of rotation D3. In its rest position, the locking hook 12 is located in a receptacle 32 of the cross member 30, which is formed in a cover part 13 of the cross member 30. A cover plate 33, rotatably mounted on a third retaining plate 11.3, covers the receptacle 32 in the cover part 13 in the rest position. When the locking hook 12 transitions from its rest position to its waiting position, it folds the cover plate 33 downwards and protrudes from the receptacle 32 in the waiting position. The described coupling elements 18.1, 18.2, 18.3 and the transmission of the force from the drive 16 to the locking hook 12 are to be understood as examples. It is also possible to implement a different number of coupling elements 18.1, 18.2, 18.3 as well as a different arrangement and other suitable geometries.

[0033] As from Fig. 3 and Fig. As can be seen further in Figure 4, the front area of ​​the vehicle roof 20 is designed as a roof cap 21, which has a receptacle in which a retaining plate 24.1, 24.2 for the locking bolt 14 is arranged. The retaining plate 24.1, 24.2 is designed in two parts and comprises a lower retaining plate 24.1 and an upper retaining plate 24.2, which are attached to the roof cap 21. During a closing movement, the vehicle roof 20, or the roof cap 21, moves towards the locking hook 12 in the waiting position. When the vehicle roof 20, or the roof cap 21, is at a predetermined distance from the cross member 30, the closing movement of the vehicle roof 20 is stopped and the locking hook 12 engages in the receptacle in the vehicle roof 20. In the closed position, the locking hook 12 engages the locking bolt 14, which is preferably designed as a rotating roller, and pulls the vehicle roof 20 towards the cross member 30. As shown in the diagram... Fig. 3 and Fig. As can be seen further in Figure 4, the locking bolt 14 is arranged between the two retaining plates 24.1, 24.2. The in Fig. 3 and Fig. The locking position shown in Figure 4 corresponds to the end position of the locking hook 12. In the locking position, the locking hook 12 blocks the movement of the locking bolt 14 in the opening direction of the vehicle roof 20. For this purpose, a guide contour 12.1 is formed on the locking hook 12, which, in combination with a predetermined position of the locking bolt 14 in relation to the fixed third axis of rotation D3 of the locking hook 12, results in a closing torque in the locking position.

[0034] As from Fig. As can be seen further in Figure 4, the drive 16 and the first coupling element 18.1, which is connected to the drive 16 via the gear 16.1, have a first over-center position ÜT1 in the locking position, in which the movable first rotary bearing DL1 is arranged below a first line of action L1, which connects the center point of the fixed first axis of rotation D1 with the center point of the movable second rotary bearing DL2. As can be seen from Fig. As can be seen further in Figure 4, the second coupling element 18.2 and the third coupling element 18.3, which is connected to the second coupling element 18.2 and to the locking hook 12, have in the illustrated embodiment a second over-center position ÜT2 in the locking position, in which the movable third rotary bearing DL3 is arranged above a second line of action L2, which connects the center of the fixed second axis of rotation D2 with the center of the movable fourth rotary bearing DL4. If the gear is rotated clockwise, the first over-center position UT1 between the fixed first axis of rotation D1 of the gear 16.1 and the movable second pivot bearing DL2 of the second coupling element 18.2 is resolved, and with further rotation of the gear 16.1 clockwise, the second over-center position ÜT2 between the fixed second axis of rotation D2 of the second coupling element 18.2 and the movable fourth pivot bearing DL4 of the third coupling element 18.3 are released, and the locking hook 12 is moved from the locked position to the rest position. This prevents any unintentional movement of the locking hook 12 from the locked position.

[0035] As from Fig. 1, Fig. 2, Fig. 3 to Fig. As can be seen further in Figure 4, at least one sensor S1, S2, S3 determines the current position of the locking hook 12. The locking hook 12 has a sensor element G1 on the hook-forming area. In the rest position of the locking hook 12, the sensor element G1 is aligned with a first sensor S1. In the waiting position, the sensor element G1 is aligned with a second sensor S2. A third sensor S3 interacts with a second sensor G2, which is formed on the third coupling element 18.3. The second sensor G2 is aligned with the third sensor S3 when the locking hook 12 is in the locked position. These three sensors S1, S2, S3 reliably indicate or determine the current position of the locking hook 12.

[0036] As from Fig. 1, Fig. 2, Fig. 3 to Fig. As can be seen further in Figure 4, a centering receptacle 34 is arranged on the cross member 30, into which a centering element 22, arranged on the vehicle roof 20, can be inserted during the closing movement of the vehicle roof 20. The centering element 22 is designed as a bolt, which is held between the two retaining plates 24.1, 24.2. The centering receptacle 34 has a funnel-shaped wall. The shape of the centering receptacle 34 determines a direction of movement for the centering element 22, and the vehicle roof 20 can be aligned in the transverse direction of the vehicle. In an alternative embodiment not shown, the centering element 22 can be arranged on the cross member 30 and the centering receptacle 34 on the roof cap 24. A vehicle roof 20 according to the invention can have at least two centering receptacles 34 and two corresponding centering elements 22, each forming a centering pair.The two pairs of centering elements can preferably be arranged symmetrically to a longitudinal axis of the vehicle.

[0037] As from Fig. 1, Fig. 2, Fig. 3 to Fig. As can be seen further in Figure 4, the cross member 30 has at least one stop 36, 38 against which at least one element of the vehicle roof 20 rests when the vehicle roof 20 is closed. The stop can be arranged in the centering receptacle 34, with the centering element 22 resting against this stop. Alternatively or additionally, the stop 38 can be arranged next to the receptacle for the locking hook 12 and covered by the cover 33 in the rest position. In the locked position, the locking hook 12 pulls the locking bolt 14 towards the cross member 30. This presses the elements opposite the stops 36, 38 against the stops 36, 38, resulting in a tight seal of the roof cap 24 against the cross member 30. Furthermore, the locking device 10 can have a stop A1 against which the second coupling element 18.2 rests in the rest position, as shown in Figure 4. Fig. 1 is evident.

[0038] In the illustrated embodiment, a fourth sensor S4 determines the current position of the centering element 22. Additionally, a sensor (not shown) can determine the position of the roof cap 24. For this purpose, the centering element 22 can have a further sensor 22.1 at its tip, which interacts with the fourth sensor S4 to detect approach and / or determine the current position of the centering element 22.

[0039] A vehicle roof 20 according to the invention can have two or more locking devices 10 according to the invention. In a preferred embodiment of the movable vehicle roof 20, two releasable locking devices 10 are provided, which are arranged symmetrically about a longitudinal axis of the vehicle. REFERENCE MARK LIST 10 Locking device 11.1, 11.2, 11.3 Retaining plate 12 locking hooks 13. Covering 14 locking bolts 16 Drive 16.1 Gear 18, 18.1, 18.2, 18.3 coupling element 20 vehicle roof 21 Roof cap 22 Centering element 22.1 Transmitter for sensor S4 24.1, 24.2 Retaining plate 30 crossbeams 31 Windscreen 32 recording 33 aperture 34 Centering mount 36 Stop in centering mount 38 stop in the recording area S1, S2, S3 Sensor S4 Sensor G1 encoder for sensor S1, S2 G2 encoder for sensor S3 D1, D2, D3 fixed axis of rotation DL1, DL2, DL3, DL4 sliding pivot bearing A1 Stop for coupling element L1, L2 line of action

Claims

A locking device (10) for a movable vehicle roof (20), comprising a locking hook (12) and a locking bolt (14), wherein the locking hook (12) engages the locking bolt (14) in a closed and locked state of the vehicle roof (20), wherein the locking hook (12) is arranged on the vehicle side on a cross member (30) and the locking bolt (14) is arranged on the roof side of the vehicle roof (20), wherein a drive (16) is coupled to the locking hook (12) via coupling elements (18) and moves the locking hook (12) between a rest position, a waiting position, a closing position and a locked position, characterized in that the locking hook (12) is arranged in a receptacle (32) of the cross member (30) in the rest position, wherein a cover (33) in the rest position of the locking hook (12) covers the receptacle (32) covers. Locking device according to claim 1, characterized in that the locking hook (12) is rotatably mounted about a fixed axis of rotation (D3) and, when transitioning from the rest position to the waiting position, pushes the aperture (33) away and, in the waiting position, projects out of the receptacle (32). Locking device according to claim 1 or 2, characterized in that the locking hook (12) in the closed position engages the locking bolt (14) and pulls the vehicle roof (20) in the direction of the cross member (30). Locking device according to one of claims 1 to 3, characterized in that the drive (16) and a first coupling element (18.1), which is connected to the drive (16) via a gear (16.1), have a first over-center position (ÜT1) in the locking position. Locking device according to one of claims 1 to 4, characterized in that a second coupling element (18.2) and a third coupling element (18.3), which is connected to the second coupling element (18.2) and to the locking hook (12), have a second over-center position (ÜT2) in the locking position. Locking device according to one of claims 2 to 5, characterized in that a guide contour (12.1) is formed on the locking hook (12), which in combination with a predetermined position of the locking bolt (14) in relation to the axis of rotation (D3) of the locking hook (12) results in a closing torque in the locked position. Locking device according to one of claims 1 to 6, characterized in that a centering receptacle (34) is arranged on the cross member (30), into which a centering element (22) arranged on the vehicle roof (20) can be inserted during the closing movement of the vehicle roof (20). Locking device according to one of claims 1 to 7, characterized in that the cross member (30) has at least one stop (36, 38) against which at least one element of the vehicle roof (20) rests in the closed state of the vehicle roof (20). Locking device according to one of claims 1 to 8, characterized in that at least one sensor (S1, S2, S3, S4) indicates the current position of the locking hook (12). Locking device according to claim 7, characterized in that at least one sensor (S1, S2, S3, S4) indicates the current position of the centering element (22). Movable vehicle roof (20) with a convertible top frame, at least one covering roof element and at least one releasable locking device (10) which, in the closed state, releasably fixes the vehicle roof (20) to a vehicle body, characterized in that the locking device (10) is designed according to one of claims 1 to 10.

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