Lock, in particular tailgate lock, for a motor vehicle

Abstract

The invention relates to a motor vehicle lock (1), comprising a locking mechanism (2) having a rotary latch (4) and at least one pawl (5), wherein the rotary latch (4) can be latched in a main latching position and a pre-latching position, a closing and opening drive (3), wherein the locking mechanism (2) can be transferred from a pre-latching position into a main latching position by means of the closing and opening drive (3), and a closing pawl (10), wherein the closing pawl (10) moves into a holding position after the rotary latch (4) has reached the main latching position, and wherein an electrical unlocking of the locking mechanism can be carried out by means of the closing and opening drive (3).

Description

[0001] Kiekert Aktiengesellschaft

[0002] Description

[0003] LOCK, IN PARTICULAR TAILGATE LOCK, FOR A MOTOR VEHICLE

[0004] The invention relates to a lock, in particular a tailgate lock, for a motor vehicle comprising a locking mechanism with a rotary latch and at least one pawl, wherein the rotary latch can be locked in a pre-latching position and a main latching position, a closing and opening drive, wherein the locking mechanism can be moved from a pre-latching position to a main latching position by means of the closing drive, and a closing pawl, wherein the closing pawl enters a holding position after reaching the main latching position of the rotary latch.

[0005] Modern motor vehicles increasingly incorporate electrically assisted operating and functional elements. These electrically assisted systems make it easier for the user to operate the vehicle or, for example, to get in and out. The invention relates to motor vehicle locks, such as those used in doors, sliding doors, or tailgates. It is already common practice for these locks to be equipped with electric drives that enable the lock to be opened electrically and / or the door or tailgate to be closed electrically.

[0006] From DE 10 2009 020 488 A1, a motor vehicle lock with an electric drive is known. Such a motor vehicle lock typically has a rotary latch that includes at least one main detent. In the closed position, the rotary latch engages a locking bolt or a lock holder, which can be attached, for example, to a vehicle body. The rotary latch engages with a pawl, which secures the rotary latch against rotation in the main detent by means of a positive locking mechanism. Furthermore, the motor vehicle lock includes an electromechanical drive unit. Functional elements of the drive unit act on the Kiekert Aktiengesellschaft via a pawl mechanism.

[0007] Locking pawl of the vehicle lock. This allows the locking pawl to be moved around a pivot axis of the locking pawl using the drive element, thereby unlocking, for example, the rotary latch.

[0008] On the one hand, the end positions can be reliably maintained using, for example, friction devices; on the other hand, end stops are also used to decelerate the functional elements or to reach a defined holding position. For example, it is known from DE 10 2013006521 A1 to use an electric drive to unlock a lock, wherein the electric drive interacts with a locking lever, the locking lever representing a fixed stop for the drive.

[0009] A closing and opening device for a motor vehicle door lock is disclosed in DE 102013 106672 A1. The closing and opening device is equipped with a drive and a transmission element. A locking mechanism is also incorporated. The drive operates via the transmission element on the locking mechanism to open or close it. The closing drive can move the locking mechanism from a pre-lock position to a main lock position, with this movement being effected by means of a variable torque.

[0010] The generic prior art is defined by DE 102023 101 262 A1. This document discloses a lock, in particular a tailgate lock for a motor vehicle, comprising a locking mechanism with a rotary latch and at least one pawl, wherein the rotary latch can be engaged in a pre-engagement position and a main engagement position, a closing drive, wherein the locking mechanism can be moved from a pre-engagement position to a main engagement position by means of the closing drive, and wherein the closing drive can be moved to a holding position located before the main engagement position after reaching the main engagement position. The holding position is characterized by the fact that a closing pawl is moved into a position in which the closing pawl is able to immediately return to Kiekert Aktiengesellschaft.

[0011] The rotary latch engages. To open it, the locking mechanism is guided using the pull-tab.

[0012] The locking systems and automotive locks according to the invention utilize locking mechanisms that have a pre-latch position and a main latch position. In other words, the lock or locking system inherently incorporates a locking mechanism consisting of a rotary latch and at least one pawl. When closing, for example, a tailgate, and particularly when closing an electric tailgate, the tailgate moves into the area of ​​a lock holder, or vice versa, with the locking system and the lock holder interacting. Typically, when the tailgate is closed, the locking system first moves into the pre-latch position, in which the rotary latch is held by the pawl. The locking mechanism can then be moved into the main latch position by means of the closing drive.

[0013] When the lock is opened, the electric drive also releases the locking pawl from the rotary latch, thus freeing the rotary latch and allowing the tailgate to be opened, either manually or electrically. Depending on the load acting on the lock, the release of the locking pawl from the rotary latch can produce a more or less loud opening noise, sometimes referred to as a "pop." A constant goal for both automotive manufacturers and the developers of locking systems is to minimize the noise of the opening noise, thereby creating a perceived quality feature for the user. However, quiet opening is not the only desired outcome; the available space and the number of components used must also be considered. The aim is to achieve high functionality in a small space with the fewest possible components. This is where the invention comes in.

[0014] The object of the invention is to provide an improved motor vehicle lock. Furthermore, it is an object of the invention to provide a motor vehicle lock. Kiekert Aktiengesellschaft

[0015] The invention aims to provide a solution that achieves high functionality with the fewest possible components in a small installation space. Furthermore, it is the object of the invention to provide a structurally simple and cost-effective solution for the quiet opening of a motor vehicle lock.

[0016] The problem is solved by the features of independent claim 1. Advantageous embodiments are specified in the dependent claims. It should be noted that the exemplary embodiments described below are not limiting; rather, any number of variations of the features described in the description and the dependent claims are possible.

[0017] According to claim 1, the object of the invention is achieved by providing a lock, in particular a tailgate lock for a motor vehicle, comprising a locking mechanism with a rotary latch and at least one pawl, wherein the rotary latch can be engaged in a pre-engagement position and a main engagement position, a closing and opening drive, wherein the locking mechanism can be moved from a pre-engagement position to a main engagement position by means of a closing pawl of the closing drive, and wherein the closing pawl, after reaching the main engagement position of the rotary latch, enters a holding position, and the locking mechanism can be electrically unlocked by means of the closing and opening drive. The inventive design of the motor vehicle lock now makes it possible to use the closing drive to open the locking mechanism with minimal design effort.The lock's high functionality, achieved with a small number of components, allows it to be used in vehicle interiors where space is limited. While the drive unit can move the locking mechanism from a pre-locked position to a main position, it can also simultaneously unlock the lock and move the rotary latch to a release position. Kiekert Aktiengesellschaft.

[0018] When the invention refers to a lock for a motor vehicle, this means locks or motor vehicle locking systems used in motor vehicles. These can be locking systems for hoods, side doors, sliding doors, tailgates, covers, or other locking systems in motor vehicles, which are used wherever pivotally or slidably arranged components must be securely positioned and held during the operation of the motor vehicle. The terms "lock," "locking system," and "motor vehicle lock" are used synonymously.

[0019] The lock features a locking mechanism with a rotary latch and at least one pawl. Different pawls can be used, interacting with the rotary latch in various ways. For example, in a main locking position, a closing or opening torque might be present, so that in the case of an opening torque, the pawl could be additionally secured in the main locking position by an auxiliary pawl or a blocking lever.

[0020] The locking mechanism according to the invention has a pre-locking position and a main locking position. When, for example, a side door is closed for the first time, the locking mechanism, in conjunction with a lock holder, moves into a pre-locking position. From this pre-locking position, the locking mechanism or the rotary latch can be moved into the main locking position by means of the closing drive. The closing drive acts directly on the rotary latch and moves it from the pre-locking position to the main locking position. In the main locking position, the locking pawl rests against a main detent of the rotary latch.

[0021] The opening drive allows the rotary latch to be moved from its main detent position into an overtravel position, thus releasing the rotary latch from the pawl. In the overtravel position, the pawl is disengaged from the Kiekert Aktiengesellschaft.

[0022] The engagement area is moved outwards with the rotary latch, and then the rotary latch is moved into an open position via the pull-in pawl, past the main detent position. In other words, the rotary latch is opened in a guided manner, so that the lock holder is moved from the overtravel position of the rotary latches into its release position.

[0023] In the main detent position and especially in the overtravel position, high door seal pressures act on the locking mechanism, which can cause noise when the locking pawl is moved out of engagement by the rotary latch. According to the invention, if the rotary latch is first moved into an overtravel position, so that the door element is pressed further towards the door seal and the locking pawl is released from the rotary latch, the locking pawl can be moved out of engagement with the rotary latch without load. An opening noise or bang can be avoided or prevented by moving the rotary latch into the overtravel position to open the locking mechanism.

[0024] In a further embodiment of the invention, the closing and opening drive comprises a cam disc. The use of a cam disc offers the advantage that the mechanical components of the vehicle lock can be guided and moved along the inner or outer area of ​​the cam disc. The cam disc itself has a control contour into which a drive lever engages, thus enabling the closing and guided unlocking of the rotary latch. The control contour can therefore assist or initiate both the closing and unlocking of the lock. Furthermore, an outer contour of the cam disc can be used to initiate the groove opening function. In other words, the cam disc performs an additional function within the vehicle lock.The cam disc itself is rotatably mounted in the lock case of the motor vehicle lock and can be driven by an electric drive and at least a single-stage gearbox, preferably a worm gear. Kiekert Aktiengesellschaft.

[0025] If the cam disc has an opening cam, and the release lever can be actuated by means of this opening cam, a further embodiment of the invention results. The cam disc serves as the actuating element in the vehicle lock and thus reduces the number of components required for the full functionality of the vehicle lock to a minimum. Driven by the electric motor and the downstream gearbox or gearbox stages, the cam disc can, on the one hand, absorb the high forces required to move the rotary latch into the main detent or overtravel position, and, on the other hand, the release lever can initiate the unlocking of the lock at any time by means of the cam disc and the cam arranged on the cam disc.To enable the continued quiet and smooth opening of the lock, the drive is capable of moving the lock into the overtravel position, thus effortlessly disengaging the pawl from the engagement area of ​​the rotary latch. If the closing process needs to be interrupted due to an operator command or a signal from an anti-pinch device, the release lever can be directly actuated by means of the opening cam on the cam disc. The release lever moves the pawl, resulting in the immediate unlocking of the lock. Simultaneously, the release lever is also capable of disengaging the closing pawl from the rotary latch, particularly any engagement mechanism and / or the pre-latch. The opening cam is preferably located on an outer edge of the cam disc and extends from the cam disc into the movement area of ​​the release lever.

[0026] If the opening cam engages in a first actuating section, in particular a control cam, of the release lever, a further embodiment of the invention results. The release lever is designed such that an actuating section is present which engages with the opening cam, whereby a high force can be generated via a long lever arm. In other words, the opening cam engages at a point remote from the pivot axis of the Kiekert Aktiengesellschaft.

[0027] The first actuating section is integrated into the release lever. This ensures that sufficient force is available to directly move the locking pawl, as high forces are exerted on the rotary latch, particularly during closing. The opening cam moves the release lever, which simultaneously disengages the closing pawl from the rotary latch via an ejector arm on the release lever. The cam disc is designed such that, on the one hand, the release lever is actuated, and on the other hand, the locking pawl and the closing pawl are simultaneously disengaged from the rotary latch.

[0028] In a further embodiment of the invention, and in particular of the release lever, a further actuating section adjoins the first actuating area of ​​the release lever. The first actuating section is characterized by a straight path and a correspondingly large leverage torque for unlocking the locking mechanism and moving the locking pawl out of engagement with the rotary latch. The second actuating section adjoins the first actuating section directly and holds the release lever in a position in which, on the one hand, the locking pawl is kept out of engagement with the rotary latch, and on the other hand, the locking pawl cannot re-engage with the rotary latch. Consequently, the release lever, in combination with the opening cam, provides a snow load lever, thereby preventing the locking pawl from re-engaging with the rotary latch.Simultaneously, the ejector arm holds the locking pawl in a release position for the rotary latch. Release position here means that the locking pawl is held out of engagement with the rotary latch and / or any engagement mechanism on the rotary latch. The subsequent actuation section is preferably angled relative to the first actuation section on the release lever.

[0029] As explained above, the further actuation section forms a storage lever function for the locking mechanism. The release lever is moved by the opening cam or pivoted around its bearing axis. According to Kiekert Aktiengesellschaft

[0030] When the release lever is moved by the opening cam, the next actuating section engages with the opening cam on the cam disc. This further actuating section results in no or only a slight pivoting movement of the release lever and, due to its essentially parallel contact surface on the opening cam, provides a secure contact surface for the release lever in its deflected position. Holding the release lever in the deflected position prevents the pawl from entering the engagement area with the rotary latch. The release lever, in combination with the opening cam, thus forms the locking lever function for the lock mechanism or the vehicle lock.

[0031] In another embodiment, the opening cam is formed integrally with a control cam of the cam disc. The cam disc is driven by the electric drive or the downstream gearbox. The cam disc itself has an internal control cam into which a drive lever for the closing pawl engages. When the locking mechanism is moved from an open position to a pre-latch position, for example, when a side door or tailgate is closed, the spring-loaded locking pawl engages with the pre-latch on the rotary latch. Simultaneously, the closing pawl moves into a position in which it, also spring-loaded, can engage a locking element on the rotary latch.

[0032] In one embodiment, the influencing element can form the pre-latch position, but it is also conceivable that, for example, a separate bolt on the rotary latch serves as the engagement element for the closing pawl. Starting from the pre-latch position, the engaged pawl, and the engaged closing pawl, the closing process, i.e., the transfer of the locking mechanism from the pre-latch position to the main latch, can now begin. If, during the rotation of the cam disc and thus the guidance of the drive lever in the control cam, an opening command is sent to the vehicle lock, then a Kiekert Aktiengesellschaft

[0033] Reversing the direction of rotation of the cam disc initiates the unlocking of the locking mechanism.

[0034] It has proven advantageous for the control cam to have a first and a second control cam. To close the vehicle lock, the closing pawl moves the rotary latch from a pre-detent position, past the main detent position, into an overtravel position. In this overtravel position, the locking pawl engages in the main detent of the rotary latch. Closing, as well as subsequent opening, of the lock is again achieved by moving the rotary latch into the overtravel position, then moving the locking pawl out of the detent position, and finally guiding the rotary latch into a release position by means of the closing pawl. This allows for quiet or easy opening of the lock. The locking and opening of the lock is accomplished by a synchronous movement of the cam disc and thus of the control cam.

[0035] If an opening command is sent to the lock while it is closing—for example, if an anti-pinch device generates an opening signal—an emergency opening can be achieved by a counter-rotating movement of the cam disc. This counter-rotating movement engages a sleeve on the drive lever in the second control cam of the cam disc. The first control cam is therefore used for the regular opening and closing of the lock, while the second control cam is used for emergency opening or unlocking, accompanied by a loud bang. A loud bang is generated when a load is present between the rotary latch and the pawl, or between the rotary latch and the catch latch, and the pawl and / or catch latch can be mechanically disengaged from the rotary latch. The breaking of the pawl or catch latch produces a noise known as the opening bang.

[0036] If the second control curve is unclear due to a reversal of the direction of movement of the closing and opening drive, a further Kiekert Aktiengesellschaft results.

[0037] A further embodiment of the invention. As explained above, locking and unlocking, i.e., closing and / or opening the vehicle lock, can be achieved by means of a continuous and unidirectional movement of the cam disc. This unidirectional movement of the cam disc results in very fast opening times and thus a high level of convenience for the vehicle lock. In order to also initiate a rapid unlocking or opening of the lock, for example to prevent injuries, the second control cam and a reversal of the drive's direction of movement directly unlock the locking mechanism. A loud bang when opening the lock is intentionally accepted in this case.

[0038] Advantageously, the control cam and the opening cam are formed integrally with the cam disc. Furthermore, it can be advantageous, and constitute a further embodiment of the invention, if the first and subsequent actuating sections are formed integrally with the release lever and extend from a section of the release lever. This section of the release lever can then, for example, serve as an additional means of manual intervention in the release lever, such as in the event of a power outage or failure in the vehicle.

[0039] The invention is explained in more detail below with reference to the accompanying drawings and a preferred embodiment. However, it is important to note that this embodiment does not limit the invention but merely represents an advantageous configuration. The features shown can be implemented individually or in combination with other features described in the description and claims.

[0040] It shows: Kiekert Aktiengesellschaft

[0041] Fig. 1 shows a top view of an open motor vehicle lock designed according to the invention in a pre-locked position, with only essential components of the motor vehicle lock shown to illustrate this.

[0042] Fig. 2 shows a view of the release lever and the control curve of the cam disc in a position according to Fig. 1.

[0043] Fig. 3 shows the motor vehicle lock according to Fig. 1 in a closing movement of the rotary latch and

[0044] Fig. 4 shows the opening cam in a system on the further actuating section, in the storage lever position.

[0045] Figure 1 shows a top view of an open vehicle lock 1. Only those components of the vehicle lock 1 necessary for explaining the invention are shown. The vehicle lock 1 comprises a locking mechanism 2, a closing and opening drive 3, and an electric drive (not shown) for the closing and opening drive. The vehicle lock is shown in a pre-engaged position of the locking mechanism 2. A rotary latch 4 is engaged with a pawl 5, the pawl 5 being engaged with an engagement element as a pre-engagement 6. In this embodiment, the engagement element 6 is designed as a bend in a metallic part of the rotary latch 4 and simultaneously forms the pre-engagement 6 on the rotary latch 4. The locking mechanism 2 is thus locked in the pre-engagement 6 position.

[0046] The closing and opening drive 3 comprises a drive lever 7, a cam disk 8 (shown in Fig. 4), a control contour 9, and a closing pawl 10. In this embodiment, a release lever 11 is rotationally fixed to the locking pawl 5, as can be clearly seen in Fig. 2. The drive lever is pivotably mounted in a metallic lock case 13 via an axis 12. An engagement sleeve 14 connects the drive lever 7 to the Kiekert Aktiengesellschaft

[0047] The control cam 9 allows a torque generated in the cam disk 8 to be transmitted to the drive lever 7. In other words, the drive lever 7 is moved and controlled via the control cam 9. The control contour 9 is formed integrally with the cam disk 8, and a top view of the control contour 9 is shown in Figure 2.

[0048] The pull-in latch 10 is pivotably attached to the drive lever 7.

[0049] Fig. 1 shows a pre-latch position, i.e., the position in which, for example, a tailgate has been closed and a lock holder 15 engages with the rotary latch 4, pivoting the rotary latch 4 clockwise around the axis 16 so that the spring-loaded pawl 5 can engage in the pre-latch 6 on the rotary latch. When the rotary latch engages in the pre-latch position, the cam disc 8, and thus the control contour 9, is actuated, and the closing pawl 10 moves into the engagement position shown in Fig. 1. The control contour 9 then moves counterclockwise around the axis 17. Fig. 1 therefore shows the initial state before the lock is closed from the pre-latch position to a main latch position.

[0050] If, starting from the position shown in Fig. 1, the locking mechanism 2 is initiated to close, the closing pawl 10 engages the engagement means 6 and begins the closing process, i.e., the movement of the rotary latch 4 from the pre-lock position to a main locking position. Fig. 1 also shows the position of the engagement sleeve 14 in the pre-lock position of the locking mechanism 2. To close the locking mechanism, the engagement sleeve would move in the direction of arrow P1 within the control contour 9, causing a pivoting movement of the drive lever 7 about the axis 12.

[0051] Figure 2 shows a rear view of the release lever 11 and a view of the control contour 9 of the cam disc 8. Kiekert Aktiengesellschaft was incorporated into Figure 2.

[0052] The pre-detent position VR of the engagement sleeve 14 is also shown. As explained above, movement of the control cam 9 in the direction of arrow P1 causes the lock 2 to close. If an opening command is now generated by the operator or, for example, by a control unit of an anti-pinch device, the cam disk 8 is moved in the opposite direction, i.e., clockwise around the axis 17 in Fig. 2. The movement of the cam disk 8, and thus of the control cam 9, causes the engagement sleeve to move along the further control contour 18. The movement of the engagement sleeve 14 in the direction of arrow P2 causes an opening cam 19 to engage with a first actuating section 20 on the release lever 11.

[0053] The movement of the cam disk 8 consequently causes the opening cam 19 to move the pawl 5 directly around the axis 21 in the direction of arrow P3, and the pawl 5 is immediately moved out of the engagement area with the rotary latch 4. The opening command from the operator or the control system consequently causes the cam disk 8 to move in the opposite direction, thus interrupting the closing action and immediately initiating the unlocking of the lock 2. For this purpose, the engagement sleeve 14 is guided in the second control contour 18, initiating the opening of the vehicle lock 1. Simultaneously, an ejector arm 22 on the release lever 11 engages the closing pawl 10, so that the closing pawl 10 is also moved out of the engagement area with the rotary latch.

[0054] Figure 3 shows the vehicle lock 1 according to the invention in a closing movement. The engagement sleeve 14 is located in the first control contour 9 in the direction of arrow P1, so that the pawl is moved from the pre-latch position to the main latch position. If an opening command is now sent to the vehicle lock 1 during the closing process, the cam disk 8 is again driven counterclockwise, so that the engagement sleeve 14 is guided into the second control contour 18 in the direction of arrow P2. The insertion of the engagement sleeve 14 into the second control contour 18 is described by Kiekert Aktiengesellschaft.

[0055] The control contour 18 in turn causes the pull-in latch 10 to be moved out of engagement with the rotary latch and in particular out of engagement with 6 by means of the ejector arm 22 on the release lever 11.

[0056] Fig. 4 shows the movement of the engagement sleeve 14, starting from the closed position ZZ of the engagement sleeve 14 in the direction of arrow P2 to the open position OS in the second control contour 18. Fig. 4 shows the open position of the release lever 11, in which the opening cam 19 engages with the second actuating section 23 on the release lever 11. The second actuating section 23 connects directly to the first actuating section 20 and, in this embodiment, is angled at > 60°, preferably > 70°, relative to the first actuating section 20 on the release lever 11. The second actuating section 23 is designed such that nearly parallel surfaces of the opening cam 19 and the second actuating section 23 face each other, ensuring that the release lever 11 is held securely in the open position OS.

[0057] By reversing the direction of the drive of the drive lever 7 or the cam disc 8, the locking mechanism 2 can be unlocked immediately and quickly, thus enabling the vehicle lock 1 to be opened rapidly. A highly functional vehicle lock 1 can therefore be provided with minimal design effort and a small number of components. Kiekert Aktiengesellschaft

[0058] Reference symbol list

[0059] 1 motor vehicle lock

[0060] 2 locks

[0061] 3 Closing and opening drive 4 Rotary latch

[0062] 5 locking pawl

[0063] 6 intervention tools, pre-emergence

[0064] 7 Drive levers

[0065] 8 Cam disc

[0066] 9 Tax contour

[0067] 10 Pull handle

[0068] 11 Release lever

[0069] 12, 16, 17, 21 axis

[0070] 13 lock boxes

[0071] 14. Engagement sleeve

[0072] 15 lock holders

[0073] 18 Second tax contour

[0074] 19 opening cams

[0075] 20 First actuation section 22 Ejector arm

[0076] 23 Second actuation section

[0077] P, P2, P3 arrow

[0078] VR pre-position

[0079] OS disclosure

[0080] ZZ Pull-in position

Claims

Kiekert Aktiengesellschaft Patent claims 1. Lock (1), in particular tailgate lock (1), comprising a locking mechanism (2) with a rotary latch (4) and at least one locking pawl (5), wherein the rotary latch (4) can be locked in a main locking position and a pre-locking position, a closing and opening drive (3), wherein the locking mechanism (2) can be moved from a pre-locking position to a main locking position by means of the closing and opening drive (3), and a closing pawl (10), wherein the closing pawl (10) enters a holding position after the main locking position of the rotary latch (4) has been reached, characterized in that the locking mechanism (2) can be electrically unlocked by means of the closing and opening drive (3).

2. Motor vehicle lock (1) according to claim 1 , characterized in that the closing and opening drive (3) comprises a cam disk (8).

3. Motor vehicle lock (1) according to one of claims 1 or 2, characterized in that the cam disk (8) has an opening cam (19), wherein the release lever (11) can be actuated by means of the opening cam (19).

4. Motor vehicle lock (1) according to one of claims 1 to 3, characterized in that the opening cam (19) engages in a first actuating section (20) of the release lever (11).

5. Motor vehicle lock (1) according to one of claims 1 to 4, characterized in that the release lever (11) has a further actuating section (23), wherein the further actuating section (23) connects to the first actuating section (20). Kiekert Aktiengesellschaft 6. Motor vehicle lock (1) according to one of claims 1 to 5, characterized in that the further actuating section (23) forms a storage lever function for the locking mechanism (2).

7. Motor vehicle lock (1) according to one of claims 1 to 6, characterized in that the opening cam (19) is formed integrally with the cam disk (8).

8. Motor vehicle lock (1) according to one of claims 1 to 7, characterized in that the control cam (9,18) has a first and a second control cam (9,18).

9. Motor vehicle lock (1) according to claim 8, characterized in that the second control cam (18) can be approached by means of a reversal of a direction of movement of the closing and opening drive (3).

10. Motor vehicle lock (1) according to one of claims 1 to 9, characterized in that a first and second actuating section (20, 23) for the opening cam (19) is formed integrally with the release lever (11).

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