CN115874879A - Motor vehicle lock, in particular motor vehicle door lock - Google Patents

Abstract

The invention relates to a motor vehicle lock, in particular a motor vehicle door lock. The motor vehicle lock is equipped with a locking device (1, 2) which is essentially composed of a rotary catch (1) and a pawl (2). Furthermore, a control lever system (3, 4) is realized, which has an electric control drive (11, 12) for emergency control of the locking device (1, 2). Furthermore, a locking unit (7, 8) is provided, which has an electric locking drive (11, 12). According to the invention, the actuating drive (11, 12) and the blocking drive (11, 12) are designed as single electric drives (11, 12) and are functionally combined.

Description

Motor vehicle locks, especially motor vehicle door locks

technical field

The invention relates to a motor vehicle lock, in particular to a motor vehicle door lock, which has: a locking device, which mainly consists of a rotating lock fork and a locking pawl; An electric actuating drive; a locking unit with an electric locking drive.

Background technique

In motor vehicle locks, in particular motor vehicle door locks, which have an electric actuating drive, the locking device is usually opened, for example after “keyless entry”. In principle, however, it is also possible, for example, to act on a sensor or a switch associated with the outer door handle, so that the electric actuating drive then opens the locking device. This so-called "electric opening" has proven to be particularly advantageous in practice for reasons of comfort.

In order to be able to open the locking device even in the event of a possible failure of the vehicle-side battery or the vehicle-side on-board electrical system voltage, an actuating lever system for emergency actuation or emergency opening of the locking device is usually additionally provided. As a result, the associated motor vehicle door can also be opened if the actual electric drive cannot be opened due to a discharged battery or a fault. This also applies in particular if the electrical energy supply is interrupted or destroyed due to a collision.

For this purpose, the prior art according to DE 10 2017 124 518 A1 works with an adjusting element which locks the actuating lever system during normal operation and releases the actuating lever system for emergency opening. For this purpose, the adjusting element is equipped with an electric actuation drive for emergency actuation of the locking device. Furthermore, a further electric drive is realized, which is used for opening the locking device during normal operation. For this purpose, the rotational movement of the associated adjusting drive or opening drive is transmitted to the release lever indirectly or directly during normal operation. The release lever itself in turn ensures that the locking pawl is disengaged from its locking engagement with the rotary locking fork. The pin that was caught earlier disengages. Accordingly, the associated motor vehicle door can be opened.

In the prior art of this type according to US 2003/0178859 A1, in addition to the opening drive for normal operation, a further electric drive is provided for emergency actuation of the locking device. Corresponding to the above, this is therefore an electric actuation drive for the emergency actuation locking device. Finally, the known teaching also works with a further electric drive, which belongs to the locking unit and is therefore designed as an electric locking drive in the above sense. The actuating lever system can be selectively disconnected or closed by means of an electric locking drive.

The prior art has largely proven itself, however, there is still room for improvement. In fact, such a teaching according to US 2003/0178859 A1 works with a total of three electric drives, namely an opening drive for normal operation, an electric steering drive for emergency actuation and finally an electric locking drive. This is technically costly, resulting in a protruding structure and increased manufacturing costs. The present invention makes a remedy in its entirety.

Contents of the invention

The technical problem addressed by the present invention is to further improve such a motor vehicle lock, and in particular a motor vehicle door lock, so that the structural and technical costs are reduced and thus the production costs are reduced.

In order to solve this technical problem, the invention proposes for such a motor vehicle lock and in particular a motor vehicle door lock that the actuating drive and the locking drive are functionally combined or functionally identical and are designed as a single drive. device.

According to the invention, therefore, the function of the electric actuation drive for emergency actuation of the locking device and the function of the electric lock drive as a component of the locking unit are linked and combined with one another. Since only a single drive is used here, the construction costs are thus reduced. Furthermore, the production costs are simultaneously reduced in this way.

Within the scope of the present invention, for the relevant unique drive both for emergency actuation of the locking device and as an integral part of the locking unit, an electric drive or an opening drive can be added as an additional drive in order to Used to actuate the locking device during normal operation. In principle, however, the function of the opening drive during normal operation can also be assumed by a single drive, which in this case is used not only for emergency actuation of the locking device, but also in principle for actuating the locking device.

In this case, the actuation of the locking device and the emergency actuation of the locking device generally correspond to an opening process and an emergency opening process, respectively. At least according to an advantageous design solution. In principle, however, the actuation or emergency actuation of the locking device can also belong to other functional sequences. In any case, within the scope of the invention it is in particular possible to combine the emergency actuation function or the emergency opening function and the locking function electrically, ie via a single drive. In principle, this single drive can then also be used to open or actuate the locking device during normal operation.

According to an advantageous refinement, the only drive for this purpose is usually equipped with an electric motor and an output wheel. An electric motor is usually used to rotate the output wheel. For this purpose, the electric motor can engage, via a worm arranged on its output shaft, into a toothing on the outer circumference of the output wheel. Here, either a worm gear or a helical gear or a spur gear can be used to work respectively. It is particularly advantageous if the external toothing of the worm and the output wheel on the output shaft of the electric machine each have a helical toothing. Since such a toothing is characterized by low friction, the output wheel can easily be shifted back into its initial position by means of a spring assigned to the output wheel when the motor is brought into motion.

In order to implement and implement not only the emergency actuation or emergency opening of the locking device but also the locking function by means of a single drive according to the invention, the output wheel is generally equipped with locking profiles and emergency actuation profiles. In this case, the two profilings are generally opposite with respect to the output wheel located opposite them. Furthermore, it is usually designed such that, starting from the basic position of the single electric drive, the emergency actuation or emergency opening of the locking device takes place in the direction of the output wheel, while the other second direction of the output wheel corresponds to situation, that is, to realize and implement the blocking function.

For this purpose, it is often provided that the locking profile on the output wheel acts on the locking lever as a component of the locking unit. In addition to the locking lever, the locking unit is generally and additionally equipped with a coupling lever. The coupling rod itself is used in turn to selectively open/close the lever train to load the locking device. In practice, the "disengaged" functional position of the coupling lever corresponds to the lever train being opened. Thus, the blocking unit is in its "blocked" state. However, this is the case for the "engaged" state of the coupling lever if the locking unit assumes its "unlocked" functional position.

In this case, the locking unit is generally not only switchable by means of an electric locking drive into the “unlocked” or “locked” functional position. Instead, fuse elements are often and additionally implemented here. With the aid of the safety element, the locking lever can be switched—independently of the electric drive—into the “unlocked” or “locked” position. In this case, the fuse element is generally designed as an internal fuse element. In the simplest case, the securing element can here be an "unlock/lock button".

The emergency actuation profile, which is additionally arranged on the output wheel, acts on the emergency actuation lever in turn. If the coupling lever is "engaged" or the locking unit assumes its "unlocked" state, the locking device can be opened by means of the emergency lever. In this case, generally (in the locked state of the locking device) the unlocking process takes place first, followed by emergency actuation or emergency opening of the locking device.

According to a further advantageous refinement, the motor vehicle lock is additionally equipped with a control unit and an energy source for emergency actuation or an emergency energy source. In this case, the relevant energy source or emergency energy source can also be used to supply energy to a plurality of motor vehicle locks of the motor vehicle. For this purpose, the energy source or emergency energy source can be arranged centrally and for example for two motor vehicle locks, for example on the one hand on the driver's side and on the other hand on the passenger side. The same approach can be used for a control unit which can likewise be used jointly by several vehicle locks of a motor vehicle.

Either way, the emergency actuation or emergency opening according to the invention offers the possibility of basically eliminating mechanically redundant linkages. Because the motor vehicle lock according to the invention can be opened or emergency opened by means of the energy source or the emergency energy source even in the event of a failure of the main energy source in the vehicle or the failure of the vehicle electrical system. All this is achieved with regard to a particularly simple and compact and therefore cost-effective construction, since in this context generally only a single electric drive is used both for emergency actuation and locking of the locking device. This is the main advantage of the invention.

Description of drawings

The present invention is described in detail below according to the accompanying drawing that only shows one embodiment; Shown in the figure:

FIG. 1 shows a perspective overview of a motor vehicle lock according to the invention,

FIG. 2 shows the installed state of the motor vehicle lock according to FIG. 1 in the associated motor vehicle.

List of reference signs:

Locking device 1, 2 Motor vehicle door lock K

Turn lock fork 1 Spring F

Lock claw 2

Joystick system 3, 4

curved rod 3

Curved Rod 4

Joystick 4

Axis 5

Lockbox 6

Locking unit 7, 8

Locking lever 7

Protrusion 7a

Coupling rod 8

Axis 9

axis 10

Steering drives 11, 12

Locking drive 11, 12

motor 11

output wheel 12

Lock forming part 13

Forming part 13, 13'

inner joystick 14

Emergency control forming part 13'

axis 15

Emergency joystick 16

motor vehicle 17

Emergency Energy Source 18

control unit 19

Shell 20

Detailed ways

The drawing shows a motor vehicle lock K which is a motor vehicle door lock. It is clear from a comparison of FIGS. 1 and 2 that the relevant motor vehicle door lock K can be used in each case in a motor vehicle side door. In fact, it can be seen in the view according to FIG. 2 that the motor vehicle 17 equipped with this motor vehicle door lock has a total of four such motor vehicle door locks K, that is, on the driver's door, the front passenger's in a rear door. This is of course only exemplary and not mandatory.

The basic structure of the motor vehicle lock K or motor vehicle door lock according to the invention is now shown on the basis of the perspective view in FIG. 1 . Here, the locking device 1 , 2 essentially comprising the rotary latch 1 and the pawl 2 is seen first. Furthermore, a joystick system 3, 4 is implemented. For this purpose, the actuating lever system 3 , 4 has a crank lever 3 mounted about an axis 5 in a lock box 6 , which is coupled in a rotationally fixed manner to a further crank lever 4 in the axis 5 . Thus, the rotational movement of the crank lever 3 shown in FIG. 1 in the clockwise direction about the axis 5 corresponds to a corresponding clockwise rotation of the other crank lever 4 .

Furthermore, locking units 7 , 8 can also be seen in FIG. 1 . The locking units 7 , 8 are equipped with a locking lever 7 on the one hand and a coupling lever 8 on the other hand. The locking lever 7 is likewise mounted rotatably about an axis 9 in the lock box 6 . The coupling lever 8 can also pivot about an axis 10 , which in turn is mounted rotatably on the pawl 2 .

In addition, electric actuation drives 11 , 12 for emergency actuation of locking devices 1 , 2 can also be seen in the figures. In addition, electric locking drives 11 , 12 are realized, which interact with the locking units 7 , 8 . According to the invention, the actuating drive 11 , 12 and the locking drive 11 , 12 are functionally combined and are therefore designed as a single electric drive 11 , 12 .

For this purpose, the single electric drive 11 , 12 has an electric motor 11 and an output wheel 12 . The output wheel 12 is equipped with a locking profile 13 on the one hand and with an actuation or emergency actuation profile 13 ′ on the other hand. Here, the two profiled parts 13 , 13 ′ are opposite with respect to the output wheel 12 situated opposite them.

Here, overall, the design is such that the locking profile 13 engages the locking lever 7 as a component of the locking units 7 , 8 . In fact, the clockwise movement of the output wheel 12 indicated in FIG. 1 corresponds to the fact that the locking lever 7 and thus the locking units 7 , 8 assume their “locked” state. Because during the described clockwise movement of the output wheel 12 , the locking profile 13 ensures that the locking lever 7 pivots about its axis 9 in the counterclockwise direction. As a result, the end-side projection 7 a of the locking lever 7 is moved against the end of the coupling lever 8 . As a result, the coupling lever 8 pivots about its axis 10 in the clockwise direction and can therefore (no longer) interact with the actuating lever 4 , but is spaced apart from it. This corresponds to the "disconnected" functional position of the coupling lever 8 .

If in the functional position of the coupling lever 8 "disengaged" and therefore in the functional position of the locking units 7, 8 "locked", the inner lever 14 is loaded in the counterclockwise direction about its axis 15, then for the locking device 1, 2, the connected joystick system 3, 4 idles/does not act. As a result of the counterclockwise movement of the inner actuating lever 14 , the two actuating levers 3 , 4 pivot in the clockwise direction about their common axis 5 . However, this pivoting movement of the two actuating levers 3 , 4 cannot be used to disengage the locking pawl 2 from its locking engagement with the rotary locking fork 1 because the coupling lever 8 is spaced therebetween. Thus, the locking device 1 , 2 remains in its locked or blocked position.

Therefore, in order to be able to open the locking devices 1 , 2 , the electric drives 11 , 12 need to be moved into their starting position shown in FIG. 1 . Thus, the locking lever 7 assumes its “unlocked” position shown there—when loaded by the spring F. The coupling lever 8 is then “engaged” and the locking device 1 , 2 can be opened by means of the inner lever 14 .

Furthermore, an emergency actuation or emergency opening of the locking device 1 , 2 is also possible according to the invention. For this purpose, the single electric drive 11 , 12 is acted upon in such a way that—contrary to the previously described locking process—the output pulley 12 is acted on in the counterclockwise direction by means of the electric motor 11 . As a result, the actuation profile or emergency actuation profile 13 ′ provided on the rear side in the region of the illustration according to FIG. 1 acts on the emergency actuation lever 16 . In this case, the emergency lever 16 is rotatably mounted coaxially with respect to the common shaft 15 with respect to the aforementioned inner lever 14 . The activation of the single electric drive 11 , 12 for emergency actuation or emergency opening then causes the emergency lever 16 to pivot about the axis 15 in the counterclockwise direction. As a result, the emergency lever 16 can act on both levers 3 , 4 and swivel them about their common axis 5 in the clockwise direction.

Since the locking unit 7, 8 assumes its "unlocked" position and thus the coupling lever 8 assumes its "engaged" functional state relative to the actuating lever system 3, 4 during this process, the two actuating levers 3, 4 rotate about their common axis 5 Pivoting in the clockwise direction causes the locking pawl 2 to disengage from its locking engagement with the rotary locking fork 1 . As a result, the rotary lock 1 opens under spring support and releases the previously caught locking pin.

An emergency maneuver or emergency operation is usually carried out when the main energy source present in the interior of the motor vehicle 17 shown in FIG. Emergency opening as described. In this case, the sole electric drive 11 , 12 is activated by means of an energy source 18 or an emergency energy source. The energy source or emergency energy source 18 is one or more capacitors or supercapacitors. Furthermore, the control unit 19 can also be seen here. The control unit 19 and the energy source or emergency energy source 18 can be accommodated here on a common circuit board and combined into a unit.

The module comprising control unit 19 and energy source 18 can be realized centrally in the interior of motor vehicle 17 . According to this embodiment, the modules 18 , 19 are each assigned to one side of the vehicle, according to this embodiment not only to the driver's side but also to the passenger's side. In this case, the modules 18 , 19 can be accommodated inside a housing 20 which accommodates the motor vehicle lock according to FIG. . Both are shown in FIG. 2 . That is to say, the energy source 18 or emergency energy source is used to supply a plurality of vehicle locks K of the motor vehicle 17 with energy. This solution is obviously only a preference and should not be construed as restrictive.

Claims (10)

1. A motor vehicle lock, particularly a motor vehicle door lock, has: a locking device (1, 2), which mainly consists of a rotating lock fork (1) and a locking pawl (2); 4), the joystick system has an electric operating drive (11, 12) for emergency actuation of the locking device (1, 2); a locking unit (7, 8), which has an electric locking drive (11 , 12), It is characterized in that, The actuating drive ( 11 , 12 ) and the locking drive ( 11 , 12 ) are functionally combined and designed as a single electric drive ( 11 , 12 ). 2. The motor vehicle lock according to claim 1, characterized in that the drive (11, 12) has an electric motor (11) and an output wheel (12). 3. The motor vehicle lock according to claim 2, characterized in that the output wheel (12) is equipped with a locking profile (13) and an emergency release profile (13'). 4. The motor vehicle lock according to claim 3 or 4, characterized in that the two profiles (13, 13') lie opposite each other with respect to the central output wheel (12). 5. The motor vehicle lock according to claim 1, characterized in that the locking profile (13) acts on the locking lever (7) as a component of the locking unit (7, 8). 6. The motor vehicle lock according to claim 5, characterized in that the locking unit (7, 8) has a coupling lever (8) in addition to the locking lever (7). 7. The motor vehicle lock according to claim 6, characterized in that the coupling lever (8) selectively opens or closes the lever train (3, 4) for loading the locking device (1, 2). 8. The motor vehicle lock according to any one of claims 1 to 7, characterized in that the emergency actuation profile (13') acts on the emergency actuation lever (16). 9. The motor vehicle lock according to any one of claims 1 to 8, characterized in that a control unit (19) and an energy source (18) for emergency actuation are provided. 10. The motor vehicle lock according to claim 9, characterized in that the energy source (18) is used for supplying energy to a plurality of motor vehicle locks of a motor vehicle (17).

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