LOCKING ARRANGEMENT, PARTICULARLY FOR A VEHICLE HOOD

Description

[0001] The invention relates to a lock arrangement, in particular for a bonnet or a tailgate of a vehicle.

[0002] A locking arrangement of the type mentioned above, known for example from DE 197 39 977 A1, is used, for example, in motor vehicles for locking engine hoods, backrests, doors, hoods, tailgates, trunk lids, or the like. To unlock the locking arrangement, a locking mechanism consisting of a pawl, a rotary latch, and a locking element is set in motion by means of an actuator, for example a servomotor, or manually in order to move the pawl from a locked position to an unlocked position. In the unlocked position of the pawl, the rotary latch is released so that it can be rotated from a closed position to an open position and release the locking element, for example a striker.From DE 10 2018 214 355 A1 and DE 10 2017 001 559 A1, further lock arrangements with alternative unlocking mechanisms by means of a two-way actuator or by means of a Bowden cable are known.

[0003] The invention is based on the object of providing an improved lock arrangement which is simple to construct, can be opened safely and can be easily installed.

[0004] The object is achieved according to the invention by a lock arrangement having the features of claim 1.

[0005] Advantageous embodiments of the invention are the subject of the subclaims.

[0006] The object is achieved according to the invention with a lock arrangement, in particular for a bonnet or a tailgate of a vehicle, wherein the lock arrangement comprises a rotary latch for a locking element, wherein the rotary latch and the locking element are coupled in a closed position of the lock arrangement.Furthermore, the lock arrangement comprises a safety element for securing the locking element in a secured position of the lock arrangement, a cam for unlocking and locking and at least one actuator which is designed as a two-way actuator and which cooperates with the cam, wherein the cam is designed such that upon a first actuation of the actuator both in one step and in separate steps and in a different order, the cam unlocks the rotary latch and locks the safety element or conversely the cam locks the safety element and unlocks the rotary latch in order to bring the lock arrangement into the secured position.

[0007] The advantages achieved by the invention are, in particular, that the additional cam enables several variants in the temporal sequence of unlocking and / or locking of the rotary latch and safety element.

[0008] For example, with the lock assembly closed, the rotary latch can be unlocked and the safety element locked simultaneously during the first actuation of the actuator using the cam. Alternatively, the rotary latch can be unlocked first and then the safety element locked during the first actuation of the actuator. In another alternative, the cam can lock the safety element and unlock the rotary latch in one step or in separate steps.

[0009] In a simple embodiment, the cam can have two surfaces with different cam contours. The cam can, for example, have a first surface and a second surface, each designed as a blocking surface and / or an opening surface. For example, upon first actuation, the opening surface engages directly or indirectly, for example by means of a pawl, with the rotary latch to unlock and open the rotary latch. The blocking surface, for example, directly engages the safety element to lock it, or disengages it to unlock it.

[0010] Furthermore, the actuator and / or the cam can be actuated in a first actuating direction upon the first actuation and can be actuated in an actuating direction opposite to the first actuating direction upon a second actuation.

[0011] In one possible embodiment, the cam releases (unlocks) the safety element upon the second actuation of the actuator and opens the safety element. This allows the locking element to move into an open position of the lock assembly.

[0012] When the actuator is first actuated, the cam unlocks the rotary latch, which automatically moves from a locked position to a free position and releases the locking element. The locking element moves to the secured position, in which the safety element secures or locks the locking element. This ensures that even if the rotary latch is open, the lock assembly does not spring open or fully open, as the locking element is held in the secured position by the safety element, such as a safety hook.

[0013] For example, the rotary latch comprises a spring element, in particular a return spring. For example, the rotary latch is held in the position blocking the locking element (= locked position of the rotary latch) by means of a spring-loaded spring element and the locking mechanism. When the rotary latch is unlocked, the spring element automatically moves the rotary latch to a position releasing the locking element, so that this locking element is unlocked and released from the rotary latch, but can still be moved to a position secured by the safety element and held there.

[0014] Upon the second actuation of the actuator, the cam unlocks the safety element. The safety element releases the locking element. The locking element moves into the open position of the lock assembly. Thus, the locking element can move into the open position of the lock assembly, in particular automatically, for example, spring-assisted or hydraulically assisted. In particular, the movable element of the vehicle, such as a hood, is automatically moved into an open position with the locking element, such as a striker.

[0015] In addition, the security element can comprise a spring element, in particular a return spring. For example, the security element is held in a position securing the locking element (= secured position of the locking element) by means of the spring element and locked by means of the cam. If the security element is actuated by means of the cam and the security element is moved into a position that unlocks or releases the locking element, the spring element is tensioned. When the lock arrangement is closed, the locking element closes automatically by means of the spring element and is moved or brought, in particular pivoted, into the position that secures or secures the locking element. For example, the spring element is designed as a tension spring or compression spring.

[0016] Another aspect provides a locking mechanism for locking the rotary latch in the closed position of the lock assembly. For example, the locking mechanism is designed as a pawl. The actuator is motion-coupled to the locking mechanism for unlocking or locking the rotary latch.

[0017] The actuator is designed as a servomotor that interacts with a spindle drive. The spindle drive is, in particular, a spindle with a thread or tooth profile (also called a threaded spindle), which is driven by the servomotor. A gear, in particular a toothed gear, engages with the thread. The toothed gear is, for example, a gear with external teeth or a disc or wheel segment with external teeth that engages and rolls on the thread. When the servomotor is actuated, the gear is moved between two end positions by means of the spindle.

[0018] The actuator is designed as a two-way actuator. During the first actuation and the second actuation, the actuator actuates and drives the cam. Additionally, during the first movement, the actuator can actuate the locking mechanism, in particular the pawl, directly or indirectly via the cam to unlock the rotary latch. Furthermore, the actuator's movement in the respective actuation direction can be limited by an end stop.

[0019] To securely unlock the rotary latch, release and open the rotary latch, and to simultaneously or sequentially lock the safety element, the actuator is operated in a first direction, for example, clockwise. To subsequently release or open the safety element, the actuator is operated in a second direction, opposite to the first direction, for example, counterclockwise. Thus, the lock assembly can be opened stepwise and thus securely using a single actuator.

[0020] In addition, the actuator, in particular the cam coupled thereto or a cam contour of the cam, can perform further functions. The cam and / or its cam contour are or are configured and coupled, for example, to the actuator in such a way that this cam or this cam contour is actuated by the actuator upon the first and / or second actuation of the latter. The cam, in particular its cam contour, can engage with the locking mechanism, in particular the pawl, and / or the rotary latch and / or the safety element. The cam, in particular its cam contour, can, for example, directly or indirectly actuate the locking mechanism, the rotary latch and / or the safety element upon the first actuation, such that the rotary latch is unlocked and the safety element is locked, or vice versa.This can occur simultaneously in a single step or sequentially in separate steps. During the second actuation, particularly the reverse actuation, of the actuator, the cam, particularly its cam contour, engages with the safety element and actuates it, so that the locking element is released and can be moved to the open position.

[0021] Additionally, the actuator can interact with a mechanism for secure, multi-stage opening or closing of the locking assembly. Such a mechanism is described, for example, in DE 10 2018 214 355 A1.

[0022] A further aspect of the invention provides that the lock arrangement comprises a locking module which comprises at least the locking element, the rotary latch, the safety element, the cam and the locking mechanism for locking the rotary latch in the closed position of the lock arrangement and a drive module which comprises the at least one actuator which is designed as a two-way actuator, wherein the locking module and the drive module are each pre-assembled and are then coupled to one another.

[0023] Alternatively, the drive module can comprise two actuators, each designed as a two-way actuator, each driving a cam. A first actuator is provided, for example, for unlocking and locking the safety element. A second actuator is provided, for example, for opening and closing the rotary latch. The two actuators can be operated synchronously or asynchronously.

[0024] For example, the elements or components of the locking module are arranged and secured on a support element, in particular a support plate, wherein the components of the locking module are mounted on the support element in a mechanically coupled manner. The drive module comprises a holding element, in particular a holding plate, on which the components of the drive module are arranged and mounted in a mechanically coupled manner. The locking module and the drive module are held together by means of fastening elements, in particular fastening rivets or fastening bolts.

[0025] The invention enables a simple, compact and modular design of the locking assembly, particularly an electrically actuated one, which consists of two modules: a locking module and a drive module. The locking assembly is variable in its actuation thanks to the separate cam and allows for multiple variations in the temporal sequence of unlocking and / or locking of the rotary latch and security element.

[0026] Another embodiment provides two actuators instead of one. This configuration of the lock arrangement with two actuators for actuating the rotary latch and safety element allows for further variations in the temporal sequence of unlocking and / or locking the rotary latch and safety element.

[0027] Embodiments of the invention are explained in more detail with reference to the drawings. Figure 1 shows a schematic perspective view of a first embodiment of a lock arrangement with an actuator, wherein the lock arrangement is shown in a closed position (locked and closed) and before a simultaneous unlocking of the rotary latch and locking of the security element for the locking element. Figure 2 shows a schematic perspective view of the lock arrangement with an actuator, wherein the lock arrangement is shown in the closed position (locked and closed). Figure 3 shows a schematic view of a lock arrangement in a secured position (unlocked and secured). Figure 4 shows a schematic view of the lock arrangement in an open position (opened). Figure 5 shows a schematic view of a lock arrangement in a closed position (initial position, locked and closed) and before a simultaneous unlocking of the rotary latch and locking of a security element for the locking element.Figure 6 shows a schematic view of the lock assembly in a secured position (unlocked and securely locked) after simultaneous unlocking of the rotary latch and locking of the safety element for the locking element. Figure 7 shows a schematic view of a second embodiment of a lock assembly in a closed position (initial position, locked and secured) and before sequentially unlocking the rotary latch and locking of the safety element for the locking element. Figure 8 shows a schematic view of the lock assembly in a secured position (unlocked and secured) after unlocking the rotary latch and before locking of the safety element for the locking element. Figure 9 shows a schematic view of the lock assembly in the secured position (unlocked and securely locked) after locking of the safety element for the locking element.Figure 10 shows a schematic view of a lock arrangement in a closed position (initial position, closed) and before sequential locking of the safety element for the locking element and unlocking of the rotary latch. Figure 11 shows a schematic view of the lock arrangement in the closed position (closed and securely locked) after locking of the safety element for the locking element and before unlocking of the rotary latch. Figure 12 shows a schematic view of the lock arrangement in the secured position (unlocked and securely closed) after unlocking the rotary latch while maintaining the locking of the safety element for the locking element. Figure 13 shows a schematic perspective view of an alternative embodiment of a lock arrangement with two actuators, wherein the lock arrangement is shown in a closed position (locked and secured).Figure 14 schematically shows in a further perspective view the lock arrangement with two actuators according to , Figure 13 , wherein the lock arrangement is shown in the closed position (locked and secured), and Figure 15 schematically shows a perspective view of the lock arrangement according to Figure 13 in the closed position as initial position, Figure 16 schematically shows the lock arrangement according to Figure 15 in a further view, Figure 17 schematically shows the lock arrangement according to Figure 16 after a one-stage unlocking, Figure 18 schematically shows a lock arrangement for a bonnet in an initial position, Figure 19 schematically shows the lock arrangement according to Figure 18 in an open position, and Figure 20 schematically shows a mechanical emergency release for a lock arrangement, in particular for a trunk lid.

[0028] Corresponding parts are provided with the same reference numerals in all figures.

[0029] Figure 1 shows schematically in perspective a first embodiment of a lock arrangement 1 for, for example, a bonnet of a vehicle and before a simultaneous unlocking of a, in particular pre-assembled, locking module 1.1 of the lock arrangement 1 and locking of a security element 5.

[0030] The lock assembly 1 is formed in particular from the pre-assembled locking module 1.1 and a pre-assembled drive module 1.2, which are mechanically coupled and connected to one another. The lock assembly 1 is electrically operated, in particular electrically motorized. As an alternative to the electrically motorized opening and closing of the lock assembly 1, it can also be opened and closed by means of an electrically actuated hydraulic system. This hydraulic system (not shown in detail) interacts with a mechanism 12 described below, in particular an unlocking mechanism and locking mechanism, for a stepped, in particular single-stage or multi-stage, opening or closing of the lock assembly 1, as described here for interaction with an actuator 6.

[0031] The locking module 1.1 comprises at least one rotary latch 2, a locking mechanism 3 for locking the rotary latch 2 in a closed position P1 of the lock assembly 1, a locking element 4 and the security element 5. The closed position P1 is also referred to as the initial position.

[0032] In the closed position P1 (= closed state of the lock assembly 1), the rotary latch 2 and the locking element 4 are coupled in a closing manner. The rotary latch 2 and the safety element 5 are locked against unlocking by means of the locking mechanism 3. For example, the rotary latch 2 and the safety element 5 are in a releasable force-locking connection, in particular a frictional connection, with an outer contour of the locking mechanism 3. The rotary latch 2 is in a releasable force-locking connection with an outer contour of a pawl 3.1 of the locking mechanism 3. The safety element 5, in particular an outer contour of a claw-shaped hook 5.1, is in a releasable force-locking connection, for example, with an outer contour of an extension 3.3 protruding from the pawl 3.1.

[0033] The drive module 1.2 comprises a single actuator 6, which is designed, for example, as a two-way actuator, and the cam 7. The actuator 6 comprises, for example, a servomotor 6.1, which is coupled on the output side to a spindle drive 6.2. The spindle drive 6.2 comprises a spindle 6.2.1 with a thread 6.2.2.

[0034] The locking module 1.1 and the drive module 1.2 are each preassembled. In the preassembled state, they are coupled to one another and form the lock assembly 1. For example, the above-described elements or components of the locking module 1.1 can be arranged and fastened on a carrier element, in particular a carrier plate, wherein the components of the locking module 1.1 can be mounted on the carrier element in a mechanically coupled manner.

[0035] The drive module 1.2 can comprise a holding element, in particular a holding plate, on which the components of the drive module 1.2 can be arranged and mounted in a mechanically coupled manner. The locking module 1.1 and the drive module 1.2 are held together by means of fastening elements, in particular fastening rivets or fastening bolts.

[0036] In the figures, the locking module 1.1 and the drive module 1.2 are shown without their support element or holding element for a better overview of the functions of the lock arrangement 1.

[0037] Figure 1 shows a perspective view of the lock arrangement 1 with the actuator 6. The actuator 6 is designed, for example, as a two-way drive with two actuating directions R1 and R2 for opening or closing the lock arrangement 1, in particular a single-stage or multi-stage opening or closing of the lock arrangement 1. Figure 2shows a slightly modified perspective view of the lock arrangement 1 according to Figure 1 .

[0038] Figures 1 and 2 each show the lock arrangement 1 in the closed position P1.

[0039] The lock arrangement 1 comprises at least the locking element 4, for example a striker or a locking bolt, the rotary latch 2, the safety element 5 and the locking mechanism 3 for locking the rotary latch 2 and the safety element 5 in the closed position P1, in which the rotary latch 2 and the locking element 4 are closingly coupled.

[0040] The actuator 6 is coupled to the locking mechanism 3 and the cam 7 and interacts with them in such a way that opening and closing of the lock arrangement 1 is possible by means of a single actuator 6.

[0041] The spindle drive 6.2 comprises the spindle 6.2.1 with the thread 6.2.2 or a tooth profile. The spindle 6.2.1 is also called a threaded spindle. The spindle 6.2.1 is coupled to the actuator 6.1 and is driven by the actuator 6.1.

[0042] A gear 6.3, in particular a toothed gear, engages in the thread 6.2.2. The toothed gear is, for example, a wheel segment 6.3.1, in particular a semicircular wheel segment 6.3.1, with an external toothing 6.3.2, in particular a semicircular external toothing 6.3.2, which engages in the thread 6.2.2 and rolls on it. The gear 6.3 is moved between two end positions by means of the spindle 6.2.1 when the servo motor 6.1 is actuated. Alternatively, the wheel segment 6.3.1 can be designed as a, in particular semicircular, disc segment or a, in particular semicircular or circular, gear 6.3.3 (shown in Figure 13) with an external toothing, in particular semi-circular or circular, 6.3.2.

[0043] The locking mechanism 3 is designed as a pawl 3.1 which is rotatably mounted on a bearing pin 3.2.

[0044] The cam 7 is non-rotatably coupled to the gear 6.3. The gear 6.3 is mounted for rotation about a rotation axis 6.4, for example, on the support element.

[0045] The actuator 6, in particular the actuator motor 6.1, actuates and drives the cam 7 during a first actuation in a first actuation direction R1 and a second actuation in a second actuation direction R2. Additionally, during the first actuation, the actuator 6 can actuate the locking mechanism 3, in particular the pawl 3.1, directly or indirectly via the cam 7, according to arrow PF3 in order to unlock the rotary latch 2.

[0046] The actuator 6 interacts with the cam 7, wherein the cam 7 is designed such that upon the first actuation of the actuator 6, both in one step and in separate steps and in a different sequence, the cam 7 unlocks the rotary latch 2 and locks the safety element 5 or, conversely, the cam 7 locks the safety element 5 and unlocks the rotary latch 2.

[0047] For this purpose, the cam 7 can, for example, have at least two surfaces with different cam contours 7.1. For example, the cam 7 has a first surface 7.01 and a second surface 7.02, which can each be designed as an opening surface and / or as a blocking surface. The invention understands an opening surface to mean that the respective first surface 7.01 or second surface 7.02 presses against a movable element, such as the rotary latch 2 and / or the pawl 3, in order to move it. The invention understands a blocking surface to mean that the respective first surface 7.01 or second surface 7.02 presses against a movable element, such as the safety element 5, in order to block it and thus prevent movement.

[0048] The first surface 7.01 and the second surface 7.02 can, for example, have different curvatures and / or dimensions. For example, the cam 7 comprises a round base region from which the first surface 7.01 and the second surface 7.02 protrude to different distances. The first surface 7.01 is, for example, a protruding lug in the shape of a segment of a circle. The second surface 7.02 protrudes more strongly from the round base region of the cam 7 as another separate protruding lug in the shape of a segment of a circle. In other words: the two surfaces 7.01, 7.02 have different heights.

[0049] Depending on the arrangement (initial alignment) of the surfaces 7.01, 7.02 relative to the safety element 5, the pawl 3 and the rotary latch 2, for example the first surface 7.01 o as an opening surface for the rotary latch 2 directly (not shown) or directly for the safety element 5 (shown in the example according to Figure 4) or indirectly via the pawl 3 (shown in the example after Figure 6 ) or o as a blocking area for the safety element 5 (shown in the example according to Figure 3 ) and / or the second surface 7.02 o as an opening surface for the rotary latch 2 directly (not shown) or indirectly via the pawl 3 (shown in the example according to Figure 3 ) or as a blocking surface directly (not shown) or indirectly (by means of the blocking element 8, shown in the example according to Figure 6 ) must be trained.

[0050] In addition, the movement of the actuator 6 in the respective actuation direction R1 or R2 can be limited by an end stop.

[0051] To securely unlock the rotary latch 2 and release and open the rotary latch 2, and to simultaneously lock the safety element 5 of the first embodiment of the lock assembly 1, the actuator 6 is actuated in the first actuation direction R1. The movement of the actuator 6 is transmitted via the gear 6.3 to the cam 7, which is subsequently moved, for example, clockwise according to arrow PF1.

[0052] When the actuator 6 is actuated in the first actuation direction R1, the cam 7 unlocks the rotary latch 2 and locks the safety element 5, as shown in Figure 6 shown.

[0053] In other words: The actuator 6 interacts with the cam 7 such that, upon this first actuation of the actuator 6, the cam 7 unlocks the rotary latch 2 and locks the safety element 5, or vice versa, in one step, so that the locking element 4 is released but still held securely. The cam 7 has a corresponding cam contour 7.1, which, in a first locking area 7.2.1, comes into a releasable locking connection with the pawl 3.1 and locks it, and / or, in a second locking area 7.2.2, comes into a releasable locking connection with a locking element 8 and locks the safety element 5.

[0054] For this purpose, the cam contour 7.1 has, for example, a first locking contour 7.1.1 and a second locking contour 7.1.2. The locking contours 7.1.1, 7.1.2 are each designed, for example, as contours projecting radially from the cam 7, in particular as curved or arcuate contours.

[0055] The safety element 5 is locked against unlocking by means of the cam 7. The locking pawl 3.1 is locked against unlocking by means of the cam 7.

[0056] The first locking contour 7.1.1 comes into locking engagement with the pawl 3.1, in particular a pawl counter-contour 3.5, in the associated first locking area 7.2.1. The second locking contour 7.1.2 comes into locking engagement with the locking element 8, in particular a corresponding counter-contour 5.5, in the associated second locking area 7.2.2.

[0057] By means of the cam 7, several variants in the temporal sequence of unlocking and / or locking of the rotary latch 2 and safety element 5 are possible.

[0058] For example, when the lock assembly 1 is closed, during the first actuation of the actuator 6 by means of the cam 7, the rotary latch 2 can be unlocked and the safety element 5 and the pawl 3.1 can be locked at the same time, as shown in the sequence of Figures 1 to 6 is shown.

[0059] Alternatively, by means of the cam 7 during the first actuation of the actuator 6, the rotary latch 2 can be unlocked in a first step and then the safety element 5 can be locked in a second step, as shown in the sequence of Figures 7 to 12 is shown. In a further alternative, the cam 7 can lock the safety element 5 and unlock the rotary latch 2 in one step or in separate steps.

[0060] By unlocking the rotary latch 2, it automatically moves from a locked position to a free position as indicated by arrow PF4. This releases the locking element 4.

[0061] The locking element 4 goes into a secured position PS, in which the safety element 5 secures the locking element 4 against release, and the cam 7 locks the safety element 5 and the pawl 3.1 against unlocking (as in Figures 6 , 8 , 9 and 12 shown). This ensures that, despite the rotary latch 2 being open, the lock assembly 1 does not spring open or open completely, since the locking element 4 is or is held in the secured position PS by means of the safety element 5, for example a safety hook, and the safety element 5 and / or the pawl 3.1 is locked against unlocking by means of the cam 7.

[0062] A spring element, in particular a return spring, can be provided for the automatic movement of the rotary latch 2. For example, the rotary latch 2 is held in the position blocking the locking element 4 (= locked position of the rotary latch 2) by means of the spring element and the locking mechanism 3. If the rotary latch 2 is unlocked, the spring element automatically moves the rotary latch 2 into a position releasing the locking element 4. As a result, the locking element 4 is released from the rotary latch 2 and is unlocked, but is still moved into a position PS secured by the safety element 5 and held there securely. For this purpose, the safety element 5 is locked by means of a releasable locking connection, in particular a releasable non-positive connection, between cam 7 and locking element 8.

[0063] To subsequently unlock and open the safety element 5, the actuator 6 is moved further in the actuation direction R1. This movement is transmitted via the gear 6.3 to the cam 7, which is then moved further according to arrow PF1, for example, clockwise. The cam 7 releases the safety element 5, which is unlocked and opens, for example, automatically, in particular spring-assisted. The locking element 4 is thus released and is moved automatically, for example, spring-assisted, from the secured position PS to an open position P2 of the lock assembly 1 (shown in Figure 4 ). Thus, the lock arrangement 1 can be opened step by step and securely by means of a single actuator 6.

[0064] The locking element 4 is designed, for example, as a conventional locking bar, which is particularly attached to a movable part of the vehicle, such as a hood. The lock assembly 1 is, for example, attached to a frame on the body side (not shown in detail).

[0065] The rotary latch 2 is designed, for example, as a claw 2.1, which is rotatably mounted on the support element of the locking module 1.1 by means of a fastening rivet 2.2. The rotary latch 2 additionally comprises a spring element, for example a return spring or tension spring. By means of the spring element, the rotary latch 2, and thus in particular the claw 2.1, is automatically released from a locked position, as shown in Figures 1 , 5 , 7 and 8 shown in an open position, as in Figure 4shown. The open position of the rotary latch 2 is a position that unlocks the locking element 4, in which the locking element 4 can be and is set in an unlocked position, but still secured by the safety element 5, as for example in Figures 3 , 8 , 9 and 12 shown.

[0066] The locking mechanism 3 is formed, for example, by the locking pawl 3.1, which is rotatably mounted on the support element (not shown) via a fastening rivet or the bearing pin 3.2. The locking mechanism 3 can also comprise a pawl spring element (not shown in detail). The pawl spring element is designed, for example, as a return spring or tension spring. By means of the pawl spring element, the locking pawl 3.1 is automatically returned to the locked position, in which it locks the rotary latch 2 against opening the lock assembly 1.

[0067] The safety element 5 is designed, for example, as a claw-shaped hook 5.1. The safety element 5 is mounted on a support so as to be rotatable about an associated rotation axis 5.2.

[0068] The cam 7 can be formed separately. The cam 7 can be part of the locking module 1.1 or the drive module 1.2. In the exemplary embodiment, the cam 7 is part of the drive module 1.2 and, for example, is non-rotatably coupled to the gear 6.3. For example, the cam 7 and the gear 6.3 are mounted on an associated bearing pin 9 for rotation about the rotation axis 6.4.

[0069] The cam 7 is designed, for example, as a circular segment or a rotating arm with an outer cam contour 7.1.

[0070] The locking element 8 is arranged, for example, on the safety element 5, in particular molded thereon. The locking element 8 is designed, for example, as a locking arm protruding from the safety element 5 and pointing in the direction of the cam 7.

[0071] Figure 3 shows the lock arrangement 1 in an initial position before opening the lock arrangement 1, for example in the secured position PS, in which the rotary latch 2 is unlocked and the locking element 4 is secured by means of the safety element 5.

[0072] Figures 3 and 4 show the sequence of a one-step process with a simultaneous opening of the rotary latch 2 and locking of the safety element 5 by means of the cam 7 in the open position P2, shown in Figure 4 .

[0073] Figure 4shows the lock assembly 1 in its open position P2, in which the rotary latch 2 remains unlocked and the safety element 5 is unlocked and opened according to arrow PF6, in particular pivoted about the rotation axis 5.2, and the locking element 4 is released to move into the open position P2 according to arrow PF5.

[0074] Upon the second actuation of the actuator 6, the spindle drive 6.2 is rotated by the actuator motor 6.1 in the second actuation direction R2, which rotates in the opposite direction to the first actuation direction R1. The safety element 5 is thereby unlocked or released and pivots automatically about the rotation axis 5.2. The locking element 4 is released and can be moved to the open position P2 of the lock assembly 1, for example, by the movable element opening the hood.

[0075] At the same time, the cam 7, in particular its second locking contour 7.1.2 in a third locking area 7.2.3, engages with a counter contour 5.5 on the safety element 5, so that the safety element 5 is held in the open position P2.

[0076] Figures 5 and 6 show a one-step process with simultaneous opening of the rotary latch 2 and locking of the safety element 5 by means of the cam 7 in the secured position PS of the lock arrangement 1.

[0077] Figure 5 shows the lock assembly 1 in the closed position P1, an initial position of the lock assembly 1, in which the rotary latch 2 is locked and coupled to the locking element 4. Figure 5shows the lock arrangement 1 before a simultaneous unlocking of the rotary latch 2 and locking of the safety element 5 for the secured position PS of the lock arrangement 1, in which the locking element 4 is released but still held secured.

[0078] Figure 6 shows the lock arrangement 1 in the secured position PS, in which the rotary latch 2 is unlocked and the locking element 4 is secured, after simultaneous unlocking of the rotary latch 2 and locking of the safety element 5 for a secure holding of the released locking element 4 by means of the cam 7.

[0079] The actuator 6 is actuated in the first actuation direction R1, whereby the gear 6.3 and the cam 7 are moved according to arrow PF1 and the pawl 3.1 according to arrow PF3. The rotary latch 2 is unlocked, so that the locking element 4 is released and moves according to arrow PF5. The first locking contour 7.1.1 and the second locking contour 7.1.2 of the cam 7 simultaneously come into locking engagement with the pawl 3.1, in particular with its counter-pawl contour 3.5, in the first locking area 7.2.1 and with the locking element 8 on the safety element 5 in the second locking area 7.2.2, so that the safety element 5 is locked against unlocking.

[0080] Figures 7 to 9 show the second embodiment of the lock arrangement 1 with a multi-stage method for opening the rotary latch 2 and locking the safety element 5 by means of the cam 7 in the secured position PS.

[0081] Compared to the first embodiment of the lock assembly 1, the gear 6.3 has a wheel segment 6.3.1, in particular a wheel segment 6.3.1 round between 190 degrees and 270 degrees, with an external toothing 6.3.2, in particular a three-quarter round toothing, in particular a semicircular external toothing 6.3.2, which engages in the thread 6.2.2 of the spindle drive 6.2 and rolls on it. The gear 6.3 is moved between two end positions by means of the spindle 6.2.1 when the servo motor 6.1 is actuated. Alternatively, the wheel segment 6.3.1 can be designed as a disc segment, in particular a three-quarter round or circular disc segment, or a gear 6.3.3, in particular a three-quarter round or circular disc segment (shown in Figure 13 ) with an external toothing, in particular three-quarter round or circular, 6.3.2.

[0082] Figure 7shows the lock assembly 1 in the closed position P1, for example in an initial position of the lock assembly 1, in which the rotary latch 2 is locked and coupled to the locking element 4, and before a sequential unlocking of the rotary latch 2 and locking of the safety element 5.

[0083] The actuator 6 is actuated in the first actuation direction R1, causing the gear 6.3 and the cam 7 to move according to arrow PF1. As a result, the first locking contour 7.1.1 of the cam 7 engages with the counter-contour 3.5 of the pawl 3.1 in the corresponding first locking area 7.2.1, locking the pawl and thus also the safety element 5.

[0084] Figure 8 shows the various component movements to bring the lock assembly 1 into the secured position PS, in which the rotary latch 2 is unlocked and the locking element 4 is held secured by means of the safety element 5. The Figure 8 shows the lock arrangement 1 after unlocking the rotary latch 2 and securing the pawl 3.1 by means of the first locking contour 7.1.1 on the pawl counter-contour 3.5 in the associated first locking area 7.2.1 and before locking the safety element 5 by the cam 7.

[0085] The actuator 6 is actuated, for example, in the first actuation direction R1, whereby the gear 6.3 and the cam 7 are moved according to arrow PF1 only far enough that the pawl 3.1 is moved according to arrow PF3 such that the rotary latch 2 is unlocked and the locking element 4 is released and moves according to arrow PF5. The first locking contour 7.1.1 engages with the counter-contour 3.5 of the pawl in the first locking area 7.2.1 and locks the pawl 3.1 and, via this, the safety element 5, as shown in Figure 8shown. The cam 7 and the locking element 8 are still disengaged. The locking element 4 is secured by means of the safety element 5, in particular a safety hook 5.3. For this purpose, the safety hook 5.3 closes an upwardly open receptacle 11 for the locking element 4. The receptacle 11 is formed by the safety element 5, in particular a slot-shaped area for guiding the locking element 4.

[0086] Figure 9 shows the lock arrangement 1 in the secured position PS and after the safety element 5 has been locked directly by the cam 7. To lock the safety element 5, the actuator 6 is moved further in the first actuating direction R1 in a subsequent step and consequently the gear 6.3 and the cam 7 are moved further according to arrow PF1.

[0087] The locking mechanism 3, in particular the pawl 3.1, the rotary latch 2, the safety element 5 and the locking element 4 remain in their positions according to Figure 8 .

[0088] The cam 7, in particular its second locking contour 7.1.2, in particular a locking cam 7.3, comes into locking engagement with the locking element 8 on the safety element 5, in particular in the second locking area 7.2.2. As a result, the safety element 5 is directly locked against unlocking by means of the cam 7.

[0089] Figures 7 to 9 show a variant of a temporal sequence of release of the rotary latch 2 and locking of the safety element 5.

[0090] Figures 10 to 12 show an alternative with a reversed time sequence, first blocking of the safety element 5 by means of the second blocking contour 7.1.2 in the second blocking area 7.2.2, then release of the rotary latch 2.

[0091] Figure 10shows the lock assembly 1 in the closed position P1, an initial position in which the rotary latch 2 is locked, the locking element 4 is coupled to the rotary latch 2 and the safety element 5 is not locked by the cam 7, and before a sequential locking of the safety element 5 by the cam 7 and subsequent unlocking of the rotary latch 2 when the safety element 5 is locked by means of the cam 7 (as in Figure 11 shown).

[0092] To lock the safety element 5, the actuator 6 is moved in the first actuating direction R1 and consequently the gear 6.3 and the cam 7 are moved further according to arrow PF1.

[0093] As a result, the locking cam 7.3 comes into locking engagement with the locking element 8 of the safety element 5.

[0094] The locking mechanism 3, in particular the pawl 3.1, the rotary latch 2, the safety element 5 and the locking element 4 remain in their positions.

[0095] Figure 11 shows the lock assembly 1 after movement according to arrow PF 1 in the closed position P1, with the safety element 5 locked by the cam 7. The rotary latch 2 remains closed and holds the locking element 4 in the closed position P1.

[0096] Figure 12shows the lock assembly 1 after the rotary latch 2 has been unlocked and thus in the secured position PS, in which the rotary latch 2 is unlocked and the locking element 4 is held securely by the safety element 5 and the pawl 3.1 is locked by the cam 7, in particular its first locking contour 7.2.1. For this purpose, the actuator 6 has been actuated further in the first actuation direction R1. The gear 6.3 and the cam 7 thereby move according to arrow PF1, in particular clockwise, and the pawl 3.1 moves according to arrow PF3 to release the rotary latch 2 and thus the locking element 4, so that the latter can move into the secured position PS according to arrow PF5. The locking of the safety element 5 is maintained by means of the cam 7. For this purpose, the cam 7 has an arcuate extended cam contour 7.1 with the associated second locking area 7.2.2, which comes into locking engagement with the locking element 8 on the safety element 5.

[0097] Figure 13 shows a schematic perspective view of an alternative embodiment of a lock assembly 10 with two actuators 6. The lock assembly 10 is shown in the closed position P1 (locked and closed). The locking module 1.1 with the associated components rotary latch 2, locking mechanism 3, locking element 4 and safety element 5 is analogous to the locking module 1.1 according to Figures 1 to 12 built.

[0098] The embodiment of the lock arrangement 10 differs in the drive module 1.2, which comprises two actuators 6, two gears 6.3 and two cams 7.

[0099] An actuator 6 is provided for the safety element 5 and an actuator 6 for the rotary latch 2. The respective actuator 6 is similar to the actuator 6 according to Figures 1 to 12and comprises the actuator 6.1, which is coupled on the output side to a spindle drive 6.2. The spindle drive 6.2 comprises a spindle 6.2.1 with a thread 6.2.2.

[0100] The gear 6.3 comprises a gear 6.3.3, in particular a circular gear 6.3.3, with an external toothing 6.3.2.

[0101] Figure 13 shows the lock arrangement 10 in perspective view with coupling of the drive module 1.2 and the locking module 1.1.

[0102] Figures 14 and 15 show the lock arrangement 10 in the same representation as in Figure 13 in the closed position P1 with the locking module 1.1 and only parts of the drive module 1.2, in particular its cam 7 and a drive pin 6.5 for each actuator 6 for coupling the cam 7 with the associated actuator 6.

[0103] One actuator 6 is provided for each cam 7 to drive it for various combinations of locking and unlocking of the rotary latch 2 and the safety element 5. For this purpose, a first cam 70 is assigned to the rotary latch 2. A second cam 700 is assigned to the safety element 5.

[0104] The respective actuator 6 is designed as a two-way actuator and can be operated in two actuation directions R1 and R2. This allows the cams 70 and 700 to be actuated in two directions according to arrows PF1 and PF2.

[0105] By means of the additional cams 70, 700, driven by the associated actuators 6, further variations in the temporal sequence of unlocking and / or locking the rotary latch 2 and the safety element 5 are possible. The actuators 6 can be operated synchronously or asynchronously for this purpose. The first cam 70 is configured to control the opening and closing of the rotary latch 2. The second cam 700 is configured to control the opening, closing, and locking of the safety element 5.

[0106] Figure 16 shows the lock assembly 10 in an initial position, in the closed position P1.

[0107] The method further provides that before actuating the actuators 6 to unlock and open the lock assembly 10, a check is made to determine whether the vehicle is stationary. For this purpose, a control unit (not shown in detail) checks, for example, the vehicle's speed to determine whether it is zero. It can also be checked whether the handbrake is activated. Only if one or both conditions are met can the actuators 6 be activated. This requirement for unlocking and opening the lock assembly 10 can also be applied to the individual actuator 6 for the lock assembly 10 according to Figures 1 to 12 be adapted.

[0108] Figures 16 and 17show a one-stage unlocking of the locking arrangement 10 (also called primary release). After activating the one-stage unlocking of the locking arrangement 10, for example by pressing a button or selecting a corresponding function via a human-machine interface in the vehicle, the actuator 6 for the rotary latch 2 is actuated in the first actuation direction R1. Due to the coupling of the actuator 6 to the first cam 70, the latter is moved according to arrow PF1, thereby releasing the rotary latch 2. The pawl 3.1 is moved according to arrow PF3 in the same direction as the cam 70, in particular pivoted about the rotation axis 3.4. The rotary latch 2 opens according to arrow PF4 and releases the locking element 4.

[0109] The safety element 5 is locked against unlocking by means of the locking mechanism 3.

[0110] Figure 17shows the lock arrangement 10 after the release of the rotary latch 2 and the setting of the locking element 4 in the secured position PS according to arrow PF5 along the holder 11. In this secured position PS, the locking element 4 is held by means of the safety element 5.

[0111] The actuator 6 and the first cam 70 can then be returned to the starting position or initial position.

[0112] Figures 18 and 19 show a method for opening the lock arrangement 10, in particular a hood.

[0113] The lock arrangement 10 is in the initial position in the secured position PS, in which the locking element 4 is held securely by means of the safety element 5.

[0114] A preliminary check can be made to determine whether the vehicle is stationary. Additionally, a proximity sensor can detect the approach of a user who wants to fully open the hood and thus the lock assembly 10.

[0115] If both conditions are met, the actuator 6 for the second cam 700 is activated and actuated in the first actuation direction R1. As a result, the second cam 700 moves according to arrow PF1, in particular in the same direction as for unlocking the rotary latch 2. The second cam 700 has a driving area 7.4 to drive the safety element 5 along during this movement according to arrow PF1 and to open the lock arrangement 10. The safety element 5 has a corresponding driving contour 5.4 and moves according to arrow PF6. The locking element 4 is free and moves out of the receptacle 11 in the direction of the open position P2 of the lock arrangement 10 according to arrow PF7, as shown in Figure 19shown. The lock assembly 10 is now open.

[0116] Figure 20 shows an example of a trunk lock, in particular a mechanical emergency release of the lock assembly 10, for example, for a trunk. For example, the secured position PS must be locked if the vehicle speed exceeds 5 km / h.

[0117] For example, a lever (not shown) for the lock arrangement 10 of the trunk lock is pulled, whereby the lever can be braked by dampers.

[0118] The actuator 6 for the second cam 700 is rotated counterclockwise according to arrow PF2, so that the safety element 5 is locked by the second cam 700, in particular the locking cam 7.3. The locking cam 7.3 engages with the locking element 8 on the safety element 5, thereby preventing it from being unlocked according to arrow PF6.

[0119] The actuator 6 can stop for a few seconds and then turns back to the right and takes the second cam 700 with it to the starting position. LIST OF REFERENCE SYMBOLS

[0120] 1, 10 Lock arrangement 1.1 Locking module 1.2 Drive module 2 Rotary latch 2.1 Claw 2.2 Fastening rivet 3 Locking mechanism 3.1 Pawl 3.2 Bearing bolt 3.3 Extension 3.4 Rotation axis 3.5 Pawl counter contour 4 Locking element 5 Safety element 5.1 Claw-shaped hook 5.2 Rotation axis 5.3 Safety hook 5.4 Driving contour 5.5 Counter contour 6 Actuator 6.1 Actuator 6.2 Spindle drive 6.2.1 Spindle 6.2.2 Thread 6.3 Gear 6.3.1 Wheel segment 6.3.2 External toothing 6.3.3 Gear 6.4 Rotation axis 6.5 Drive pin 7, 70, 700 Cam 7.01 First surface 7.02 Second surface 7.1 Cam contour 7.1.1 First locking contour 7.1.2 Second locking contour 7.2.1 First locking area 7.2.2 Second locking area 7.2.3 Third locking area 7.3 Locking cam 7.4 Driving area 8 Locking element 9 Bearing pin 11 Mount 12 Mechanism P1Closed position of the lock assembly PSSecured position of the lock assembly P2Open position of the lock assembly PF1...PF7Arrow R1, R2Actuating directions

Claims

1. Lock arrangement (1, 10), in particular for a bonnet or a tailgate of a vehicle, comprising at least: - a rotary catch (2) for a locking element (4), wherein the rotary catch (2) and the locking element (4) are coupled to one another in a closed position (P1) of the lock arrangement (1), - a safety element (5) to secure the locking element (4) in a secured position (PS) of the lock arrangement (1), - a cam (7) for unlocking and locking, and - at least one actuating drive (6) which is designed as a two-way actuating drive and which cooperates with the cam (7) and actuates it during a first actuation, wherein the cam (7) is designed in such a way that, when the actuating drive (6) is first actuated, both in one step and in separate steps and in a different sequence, the cam (7) unlocks the rotary catch (2) and locks the safety element (5), or vice versa, the cam (7) locks the safety element (5) and unlocks the rotary catch (2), in order to move the lock arrangement (1) into the secured position (PS).

2. Lock arrangement (1, 10) according to Claim 1, wherein the cam (7) has at least two surfaces (7.01, 7.02) with different cam contours (7.1).

3. Lock arrangement (1, 10) according to Claim 2, wherein the cam (7) has a first surface (7.01) and a second surface (7.02), which are each formed as an opening surface and / or a locking surface.

4. Lock arrangement (1, 10) according to Claim 3, wherein the opening surface, upon the first actuation, directly or indirectly enters into engagement with the rotary catch (2) for unlocking and opening the rotary catch (2), and the locking surface directly or indirectly enters into engagement with the safety element (5), in order to lock it.

5. Lock arrangement (1, 10) according to one of the preceding claims, wherein the actuating drive (6) and / or the cam (7), upon the first actuation, can be actuated in a first actuation direction (R1) and, upon a second actuation, can be actuated in a reverse actuation direction (R2) to the first actuation direction (R1).

6. Lock arrangement (1, 10) according to one of the preceding claims, wherein, upon the first actuation of the actuating drive (6), the cam (7) unlocks the rotary catch (2) and this automatically moves from a locked position into a free position, wherein the rotary catch (2) releases the locking element (4) and this moves into the secured position (PS), in which the safety element (5) secures the locking element (4).

7. Lock arrangement (1, 10) according to one of the preceding claims or according to Claim 5 or 6, wherein the cam (7) is designed in such a way that, upon a second actuation or upon the second actuation of the actuating drive (6), both in one step and in separate steps, the cam (7) unlocks the safety element (5) and opens the locking element (4).

8. Lock arrangement (1, 10) according to Claim 7, wherein, upon the second actuation of the actuating drive (6), the cam (7) unlocks the safety element (5) and this releases the locking element (4), and this moves into the open position (P2) of the lock arrangement (1).

9. Lock arrangement (1, 10) according to one of the preceding claims, wherein a locking mechanism (3) for locking the rotary catch (2) in the closed position (P1) of the lock arrangement (1) is provided.

10. Lock arrangement (1, 10) according to Claim 9, wherein the locking mechanism (3) is formed as a locking pawl (3.1).

11. Lock arrangement (1, 10) according to Claim 9 or 10, wherein the actuating drive (6) and the cam (7) are motion-coupled to the locking mechanism (3) in order to unlock the rotary catch (2).

12. Lock arrangement (1, 10) according to one of the preceding claims, wherein the actuating drive (6) is formed as an actuating motor (6.1) which interacts with a spindle drive (6.2) and a gear mechanism (6.3).

13. Lock arrangement (10) according to one of the preceding claims, wherein a drive module (1.2) is provided, which comprises two actuating drives (6) which are each designed as two-way actuating drives and each drive a cam (70, 700).

14. Lock arrangement (10) according to Claim 13, wherein a first actuating drive (6) is provided for unlocking and locking the safety element (5), and a second actuating drive (6) is provided for opening and closing the rotary catch (2).

15. Lock arrangement (10) according to Claim 13 or 14, wherein the two actuating drives (6) can be actuated synchronously or asynchronously.