CN-116547433-B - Locking device for a motor vehicle lock

Abstract

The invention relates to a locking device for a motor vehicle lock, in particular to a locking auxiliary device for a motor vehicle lock. The basic construction of the tightening device comprises a locking mechanism (1, 2) which mainly comprises a rotary lock fork (1) and a locking claw (2). A motor (4) and a transmission (5, 6, 7, 8, 9) following the motor (4) are also realized. The transmission (5 to 9) acts on the rotary locking fork (1) at least during the closing process. According to the invention, the transmission (5 to 9) has a force flow element (8) which can be selectively engaged and disengaged in order to mechanically interrupt the tightening process.

Inventors

• J Zeyeda

Assignees

• 开开特股份公司

Dates

Publication Date

20260508

Application Date

20211202

Priority Date

20201203

Claims (10)

1. 1. A closing device for a motor vehicle lock, comprising a locking mechanism (1, 2) which essentially comprises a rotary locking fork (1) and a locking claw (2), a motor (4) and a transmission (5, 6, 7, 8, 9) following the motor (4), wherein the transmission (5, 6, 7, 8, 9) acts on the rotary locking fork (1) at least during the closing process, It is characterized in that the method comprises the steps of, In order to mechanically interrupt the closing process, the transmission (5, 6, 7, 8, 9) has a force flow element (8) which can be selectively engaged and disengaged, The force flow element (8) can be transferred from the engagement position to the disengagement position by means of a handle (13, 14), the handle (13, 14) being composed of a pivoting lever (13) which can be pivoted about an axis (15) and a projection (14) which is coupled to the pivoting lever (13) in a rotationally fixed manner, the pivoting movement of the pivoting lever (13) about its axis (15) being such that the projection (14) acts on the force flow element (8), The force flow element (8) is designed as a gear element (8), the gear element (8) being mounted in the transmission element (7) in an axially displaceable manner.
2. 2. Device according to claim 1, characterized in that the force flow element (8) is designed to be loaded linearly for engagement and disengagement.
3. 3. Device according to claim 1 or 2, characterized in that the force flow element (8) is preloaded in the engagement position by means of a spring.
4. 4. Device according to claim 1 or 2, characterized in that the force flow element (8) can be loaded indirectly or directly by means of the handle (13, 14) or its own electric drive.
5. 5. Device according to claim 1 or 2, characterized in that the gear element (8) is coupled in a rotationally fixed manner with the transmission element (7).
6. 6. Device according to claim 1 or 2, characterized in that the gear element (8) engages with at least one radial peg (8 c) into a peg receiver (16) of the transmission element (7).
7. 7. Device according to claim 6, characterized in that a plurality of radial pegs (8 c) on the gear element (8) engage in a rotationally fixed but simultaneously axially movable manner in corresponding peg receptacles (16) of the transmission element (7).
8. 8. Device according to claim 6, characterized in that the gear element (8) is equipped with radial pegs (8 c) on the bottom side, also with intermediate pieces (8 a) connected to the radial pegs (8 c), and with teeth (8 b) on the top side.
9. 9. The device of claim 1, wherein the locking device for a motor vehicle lock is a motor vehicle door lock locking assist device.
10. 10. Device according to claim 4, characterized in that the locking pawl (2) can be loaded indirectly or directly by means of the handle (13, 14) or its own electric drive.

Description

Locking device for a motor vehicle lock Technical Field The invention relates to a closing device for a motor vehicle lock, in particular a motor vehicle door lock closing auxiliary device, comprising a locking mechanism, which essentially comprises a rotary locking fork and a locking claw, and a motor and a drive following the motor, wherein the drive acts on the rotary locking fork at least during the closing process. Background Closure devices for motor vehicle locks and in particular motor vehicle door locking aids have already been widely used, for example as disclosed in the prior art of the type described in DE 198 28 040a 1. In this case, a motor is provided which rotates the control disk via the motor shaft and the worm. In this case, the rotary latch has a stop element which interacts with the control disk during the closing process. In this case, the transmission is defined by the motor shaft, the control disk and a peg on the control disk. Within the scope of the application, the concept "transmission" is therefore to be interpreted in a broad sense, i.e. a transmission is typically used in the broadest sense for the transmission ratio of the rotational movement of the motor shaft of the motor. This can be achieved and implemented by the combined action of the worm with the control disk and the peg. Furthermore, other designs of the transmission are of course also conceivable. Another prior art, which likewise belongs to this class, according to DE 10 2019 107 845 A1 therefore acts on a traction mechanism by means of an electric drive, which acts on the rotary locking fork with the required tightening force by tightening the pawl. In order to achieve and implement the anti-pinch protection, voltage pulses and/or current pulses are generated during the tightening process. In this connection, the control device may switch off the electric drive. In this case, the driving device can be reversed. Thus, although effective anti-pinch protection may be achieved and implemented. However, the structural design is complex. However, such anti-pinch protection is in fact essential for such tightening devices in order to avoid injuries. This is basically explained by the fact that the locking pin gripped by the rotary fork is also acted upon in the closing sense during the closing process. Since the locking pin is typically connected to the corresponding motor vehicle door, the closing movement of the corresponding motor vehicle door corresponds directly to this. Clamping may result when an operator's finger enters a gap between the motor vehicle door and the motor vehicle body during this process. At the same time, the required effectiveness should of course be constantly provided, the closing device being able in particular to overcome the reaction forces which are generated during closing by the door rubber sealing strip to be compressed in this case between the respective motor vehicle door and the motor vehicle body. Disclosure of Invention The object of the present invention is therefore to further develop such a tightening device such that a simple and cost-effective embodiment for interrupting the tightening movement is simultaneously provided without changing the effectiveness. In order to solve this problem, within the scope of the invention, such a closing device for a motor vehicle lock is characterized in that the transmission has a selectively engageable and disengageable force flow element in order to mechanically interrupt the closing process. Within the scope of the invention, therefore, no complex sensor solutions are used, as the subject matter of DE 102019 107 845a1, in order to achieve, for example, anti-pinch protection. More precisely, in the end effect, the force flow from the motor through the transmission to the rotating fork is straightforward and is very normally mechanically interrupted without a sensor inquiry. For this purpose, the transmission has at least one force flow element which can be engaged and disengaged according to the invention. In the engaged state, the force flow element serves to convert a rotational movement of the motor output shaft by means of the transmission and is then transmitted to a rotary locking fork which can be acted upon by means of the transmission during the closing operation. Unlike the exemplary engageable and disengageable engagement device, the engageable and disengageable force flow element assists in achieving the desired gear ratio in the present invention. In other words, when the engagement device is also used or can be used for breaking a force flow, for example, this is provided according to the invention by an engageable and disengageable force flow element, wherein the force flow element itself is a transmission-aid component of the transmission device. For this reason, according to the invention, the additional engagement means are clearly superfluous and are not provided. The disengaged state of the force flow element corresponds