CN112240138A

CN112240138A - Drive device for a motor vehicle door

Info

Publication number: CN112240138A
Application number: CN202011015402.0A
Authority: CN
Inventors: 克里斯蒂安·胡卡; 黄庆
Original assignee: Hcs Enntech German GmbH
Current assignee: Hcs Enntech German GmbH
Priority date: 2017-06-14
Filing date: 2017-06-14
Publication date: 2021-01-19
Also published as: CN109138706A; CN109138706B

Abstract

The invention discloses a drive device for a motor vehicle door, comprising: a housing; a drive unit having a motor; a spindle nut; and a multi-spindle drivable in rotation by said spindle nut. The invention provides a drive device for a motor vehicle door, which has relatively small external dimensions, so that the motor-driven opening and closing of the motor vehicle door is realized.

Description

Drive device for a motor vehicle door

The filing date of the original application of the divisional application is as follows: 14/06/2017, with the application numbers: 201710446487X, name: a drive device for a motor vehicle door and a motor vehicle.

Technical Field

The invention relates to a drive device for the motorized adjustment of two motor vehicle components which can pivot relative to one another, one of which is a motor vehicle door.

Background

It is known in the prior art to open and close motor vehicle doors in a motorized manner. In particular, motor vehicles of different manufacturers are commercially available, the trunk of which can be opened and closed in a motorized manner. Motor vehicles with two doors, which open and close in a motorized manner, are also provided. The same applies to motor vehicles with sliding doors. Conventional motor vehicle doors (i.e., doors having a substantially vertical pivot axis) are mostly opened and closed manually. The reason is primarily that the drive devices currently available on the market require a lot of construction space, which is not available in most constructions of conventional doors.

On the basis of this prior art, the object of the invention is to create a drive device of the aforementioned type with relatively small external dimensions.

Disclosure of Invention

In order to achieve this object, the invention provides a drive device of the type mentioned above for the motorized adjustment of two motor vehicle components which can be pivoted relative to one another, one of which is a motor vehicle door, comprising: a housing configured to be swingably fixed to one of the vehicle components; a drive unit having a motor fixed to the housing; a spindle nut with an internal thread, which is mounted in a translatory manner in the housing in a positionally fixed and rotatable manner and which can be driven in rotation by the drive unit; and a multi-spindle drivable in rotation by the spindle nut, the free ends of which are designed to be pivotably fastened to one another of the motor vehicle components in a rotationally fixed manner relative to the longitudinal axis thereof, wherein the multi-spindle comprises a first spindle part having an external thread which engages with the internal thread of the spindle nut and at least one second spindle part which is in threaded engagement with the first spindle part, such that the spindle parts form a nestable construction.

The use of such multiple spindles enables a very compact design of the drive arrangement according to the invention, which enables the drive arrangement according to the invention to be installed also in very small motor vehicle doors, in particular also in conventional motor vehicle doors with a substantially vertically extending pivot axis.

The motor is preferably an electric motor. A large number of suitable electric motors of small dimensions are commercially available, which can also be supplied together with integrated transmissions of different transmission ratios, which facilitates the design and manufacture of the drive device according to the invention.

Furthermore, the drive unit has a transmission downstream of the motor. Accordingly, the transmission ratio can also be adjusted over a wide range by appropriately selecting the transmission.

The driven shaft of the drive unit preferably extends transversely, in particular perpendicularly, to the longitudinal axis of the multi-spindle, so that the linear drive overall has a substantially L-shaped design, which requires only a small amount of installation space and can be integrated in particular without problems in different motor vehicle doors of different motor vehicle manufacturers.

According to a configuration of the invention, a gear wheel, in the form of a bevel gear or a worm wheel, is arranged on the outer circumference of the spindle nut, which is driven in rotation by a gear wheel driven in rotation by the drive unit or a worm driven in rotation. In this way, a simple construction of the drive device is achieved.

Preferably, the direction of the spiral of the engagement of the spindle nut between the internal thread of the spindle nut and the external thread of the first spindle part on the one hand and the first spindle part and the second spindle part on the other hand is the same. In other words, a right or left thread in both cases. This allows the first spindle unit and the second spindle unit to always move in the same direction.

Still further, the pitch is greater than or equal to 5mm/U (millimeters per revolution), and in particular between 5 and 7 mm/U. This thread pitch enables, on the one hand, a motor vehicle door provided with the drive according to the invention to be opened and closed manually without problems. On the other hand, the resistance is also sufficiently large that the vehicle door does not open or close automatically if the vehicle is, for example, parked on a slope.

According to a configuration of the invention, the first spindle part is hollow and provided with an internal thread, and the second spindle part is provided with an external thread which meshes with the internal thread of the first spindle part. In this way, a good installation of the drive is ensured in particular.

Further, one or more stops are provided which limit the relative movement between the nut and the first spindle unit and/or between the first spindle unit and the second spindle unit. Such a stop prevents the individual parts from engaging with each other.

Preferably, the pivot axes extend parallel to each other, and the housing and the multiple spindles are pivotable about the pivot axes. In this way, a simple design of the drive according to the invention is achieved.

The invention also relates to a motor vehicle having a vehicle frame, at least one motor vehicle door pivotably mounted on the vehicle frame, and at least one drive device according to one of the preceding claims, the housing of which is pivotably mounted on the at least one motor vehicle door and the main shafts of which are pivotably mounted on the motor vehicle door, or vice versa.

A controller is provided for controlling the motor.

Furthermore, it is provided that, in particular in the region of the at least one motor vehicle door, a plurality of sensors are provided, the raw signals of which are transmitted to a control unit, wherein the control unit can be designed to control the motor taking into account the received raw information. The sensors are in particular arranged such that they monitor the surroundings of the motor vehicle door in order to prevent or stop the opening or closing of the motor vehicle door, for example, as soon as an obstacle is detected in the surroundings of the motor vehicle door. A sensor can also be provided which records the force or acceleration acting on the motor vehicle door in order to be able to detect a manual and therefore intentional actuation of the motor vehicle door. Furthermore, due to the force or acceleration profile, intentional and unintentional maneuvers (such as maneuvers caused by a storm) can also be distinguished, so that appropriate measures can be taken.

Drawings

Further features and advantages of the invention are apparent from the following description of a drive according to an exemplary embodiment of the invention and with reference to the drawings. Wherein:

FIG. 1 shows a schematic perspective view of a drive device according to an embodiment of the invention with multiple spindles in a retracted position;

FIG. 2 shows a cross-sectional view of the drive device shown in FIG. 1;

FIG. 3 shows a perspective view of the drive device shown in FIG. 1 with the multi-spindle in a pulled-out position;

FIG. 4 shows a cross-sectional view of the drive device shown in FIG. 3;

fig. 5 shows a schematic top view of a motor vehicle, the side door of which is provided with the drive device shown in fig. 1 to 4, wherein the multiple spindles of the left front door are in the retracted position thereof;

FIG. 6 shows a top view similar to FIG. 5 with the multi-spindle in its withdrawn position; and

fig. 7 shows a schematic perspective view of a drive device according to a further exemplary embodiment of the invention, without the housing for ease of understanding.

Description of the drawings

1 drive device

2 casing

3 receiving pin

4 drive unit

5 bearing

6 spindle nut

7 Gear

8 driven shaft

9 Gear

10 internal screw thread

11 step

12 multi-spindle

13 first spindle unit

14 external screw thread

15 stop block

16 end face

17 internal thread

18 steps

19 second spindle unit

20 external screw thread

21 stop block

22 end face

23 bump

24 through hole

25 bearing body

26 bolt

27 through hole

28 vehicle door

29 automobile frame

30 motor vehicle

31 controller

32 sensor

S1 first swing axis

S2 second swing axis

Detailed Description

These figures show a drive device 1 according to an exemplary embodiment of the invention for the motorized adjustment of two motor vehicle components which can pivot relative to one another, one of which is a motor vehicle door.

The drive device 1 comprises a housing which is fastened to one of the motor vehicle components in a pivotable manner about a pivot axis S1. For this purpose, receiving pins 3 are formed on the upper and lower side of the housing 2, which receiving pins are arranged flush with one another and by means of which corresponding sleeves (not shown) of the associated first motor vehicle component are firmly connected when the drive device is installed as intended.

The drive device 1 also has a drive unit 4, which is fastened to the housing 2 and has a motor and a transmission downstream of the motor. The motor and the transmission are not shown separately here, since they are integrated in the drive unit 4, which is purchased as a commercial part.

In the housing 2, a spindle nut 6 is mounted in a translatory manner in a stationary manner and rotatably about its longitudinal axis by means of a respective bearing 5, which can be driven in rotation by the drive unit 4. For this purpose, a gear wheel 7 is arranged on the outer circumference of the spindle nut 6, which gear wheel meshes with a gear wheel 9 fixed on a driven shaft 8 of the drive unit 4. The

gear wheels

7 and 9 are here designed as bevel gears, so that a very simple and robust construction is achieved. The spindle nut 6 is further provided with an internal thread 10 which is arranged in the region of a hollow step 11 which projects radially inwards.

The other components of the drive 1 comprise a multi-spindle 12 which can be rotated by means of the spindle nut 6 and can be pulled in and out accordingly.

The multi-spindle 12 has, on the one hand, a first hollow spindle part 13, which has an external thread 14, which engages with the internal thread 10 of the spindle nut 6. In order to limit the translational movement of the first spindle part 13, it is provided in the region of its free end with a stop 15, which here has the shape of an outwardly protruding bulge and which, in the maximally extended state of the first spindle part 13, strikes against an end face 16 of the step 11 of the spindle nut 6. Furthermore, the first spindle part has an internal thread 17 which is arranged on a hollow cylindrical step 18 of the first spindle part 13 which protrudes radially inwards.

On the other hand, the multi-spindle 12 further comprises a second spindle unit 19 in threaded engagement with said first spindle unit 13, so that said

spindle units

13 and 19 constitute a nestable structure. For this purpose, the second threaded part 10 is provided with an external thread 20 which meshes with the internal thread 17 of the first spindle part 13. The second spindle part 19 is provided in its rear end region with a stop 21 which, when the second spindle part 19 is completely pulled out, strikes against an end face 22 of the step 18 of the first spindle part 13. A bulge 23 is provided at the front free end of the second spindle part 19, through which a through-hole 24 extends vertically.

Between the internal thread 10 of the spindle nut 6 and the external thread 14 of the first spindle part on the one hand and the first spindle part 13 and the second spindle part 19 on the other hand, the helical direction of their engagement is the same, i.e. two right-hand threads or two left-hand threads, so that the two

spindle parts

13 and 19 always move in the same direction.

The output shaft 8 of the drive unit 4 extends here transversely, to be precise perpendicularly, to the longitudinal axis of the multi-shaft 12, so that the drive 1 has a substantially L-shaped form, which is characterized by a compact design.

In the case of the application of a spiral 26 extending through the through hole 24, the bearing body 25 is retained on the protuberance 23, which defines a second axis of oscillation S2 parallel to the first axis of oscillation S1. The bearing body 25 has the effect that the free end of the multi-spindle 12 is fixed to a second vehicle part, relative to which the first vehicle part is to be swiveled. For the purpose of fixing, the fixing means are provided with through-going holes 27, through which, for example, fastening screws or the like can be passed.

Fig. 5 and 6 show the drive device 1 in a state of being installed as intended. The housing 2 of the drive unit 1 is fastened in this case to a conventional lateral vehicle door 28 so as to be pivotable about a pivot axis S1, and the fastening element 25 is fastened to a vehicle frame 29 of a vehicle 30 so as to be pivotable about a pivot axis S2. If the drive now changes from the position shown in fig. 1 and 2 with the multi-spindle 12 pulled in to the position shown in fig. 3 and 4 with the multi-spindle 12 pulled out, the procedure is: the multi-spindle 12 is driven in rotation by the drive unit 4 and the spindle nut, which opens the motor vehicle door 28, see fig. 5 and 6. If the multi-spindle 12 is then driven in rotation again in the opposite direction, the motor vehicle door 28 is closed again. A control unit 31 for controlling the drive unit 1 is arranged at a suitable location in the motor vehicle 30, in this case in the motor vehicle door 28. Which can be actuated in a known manner by means of a switch (not shown) provided on the dashboard of the motor vehicle 30 and/or on a motor vehicle key in order to open and close the motor vehicle door 28, to name just one example. It should be clear that the controller 31 is integrated in the controller (which is already present in the motor vehicle 30) or can be provided as a separate controller.

In order to increase the safety of the drive device 1 according to the invention, in particular, a sensor 31 is provided on the motor vehicle 30, in particular in the region of the vehicle door 28, the raw signals of which are transmitted to a controller 31, wherein the controller 31 can be designed to control the motor of the drive device 1 taking into account the received raw information. The sensors 32 are in particular arranged here such that they monitor the external and/or internal surroundings of the motor vehicle door 28, in order to prevent or stop the opening or closing of the motor vehicle door 28, for example, as soon as an obstacle is detected in the surroundings of the motor vehicle door. A sensor 32 can also be provided, which records the force or acceleration acting on the vehicle door 28, in order to be able to detect a manual and thus intentional actuation of the vehicle door 28, which the drive device 1 can assist. Furthermore, due to the force or acceleration profile, intentional actuation can also be distinguished from unintentional actuation (as in the case of actuation caused by a storm), so that appropriate measures can be taken, for example, the closing of the vehicle door 28 is prevented when an unintentional actuation is detected.

Fig. 7 shows a drive 1 according to a further exemplary embodiment of the invention, which differs from the exemplary embodiments described above only in that the gear wheel 7 of the spindle nut 6 is designed as a worm wheel and the gear wheel 9 is designed as a worm which meshes with it.

It should be clear that the foregoing embodiments of the drive device 1 according to the invention are intended as examples only and are not limiting. Modifications and variations are possible without departing from the scope of the invention, which is defined by the appended claims. Thus, multi-spindle 12 can also be made up of more than two spindle parts, to name just one example.

Claims

1. Drive device for a motor vehicle door, characterized in that it comprises:

a housing (2) which is arranged to be pivotably fastened to one of the motor vehicle components (28, 29);

a drive unit (4) having a motor and fixed to the housing (2);

a spindle nut (6) which is mounted in a translatory manner in the housing (2) in a positionally fixed and rotatable manner and which is drivable in rotation by the drive unit (4) and has an internal thread (10);

and a multi-spindle (12) which can be driven in rotation by the spindle nut (6) and whose free end is designed to be pivotably fastened to the other of the motor vehicle components (29, 28) in a rotationally fixed manner relative to its longitudinal axis, wherein the multi-spindle (12) comprises a first spindle part (13) having an external thread (14) which engages with the internal thread (10) of the spindle nut (6), and at least one second spindle part (14) which is in threaded engagement with the first spindle part (13) in such a way that the spindle parts (13, 19) form a nestable construction.

2. The drive device for a motor vehicle door according to claim 1, characterized in that the motor is an electric motor.

3. The drive device for a motor vehicle door according to claim 1, characterized in that the drive unit (4) has a transmission following the motor.

4. The drive device for a motor vehicle door according to claim 1, characterized in that the driven shaft (8) of the drive unit (4) extends perpendicularly to the longitudinal axis of the multiple main shafts.

5. The drive device for a motor vehicle door according to claim 1, characterized in that a gear (7) in the shape of a bevel gear or a worm wheel is provided on the outer circumference of the spindle nut (6), the spindle nut (6) being rotationally driven by a gear rotationally driven by the drive unit (4) or a rotationally driven worm.

6. The drive device for a motor vehicle door according to any one of claims 1 to 5, characterized in that the helical direction of their threaded engagement is the same between, on the one hand, the internal thread (10) of the spindle nut (6) and the external thread (14) of the first spindle part (13) and, on the other hand, between the first spindle part (13) and the second spindle part (19).

7. A drive arrangement for a motor vehicle door according to any one of claims 1 to 5, characterised in that the pitch is between 5mm/U and 7 mm/U.

8. The drive device for a motor vehicle door according to any one of claims 1 to 5, characterized in that the first spindle part (13) is hollow and provided with an internal thread (17), and the second spindle part (19) is provided with an external thread (20) which meshes with the internal thread (17) of the first spindle part (13).

9. Drive arrangement for a motor vehicle door according to any one of claims 1-5, characterized in that one or more stops (15, 21) are provided, which limit the relative movement between the spindle nut (6) and the first spindle part (13) and/or between the first spindle part (13) and the second spindle part (19).

10. The drive device for a motor vehicle door according to any one of claims 1 to 5, characterized in that the oscillation axes (S1, S2) about which the housing (2) and the multi-spindle (12) are oscillatable extend parallel to each other.