WO2022243183A1

WO2022243183A1 - Opening a motor vehicle door

Info

Publication number: WO2022243183A1
Application number: PCT/EP2022/063012
Authority: WO
Inventors: Michael Kidd; Andrew Lakerdas
Original assignee: Brose Schliesssysteme Gmbh & Co. Kommanditgesellschaft
Priority date: 2021-05-17
Filing date: 2022-05-13
Publication date: 2022-11-24

Abstract

According to the invention, in order to provide a maximally compact device for presenting a motor vehicle door, an opening module (10) for a motor vehicle door is provided. The opening module has an opening device (12) having an actuator unit (14) and a transfer element (16). The transfer element can be extended in an extension direction (RA) from a retracted position (P0) to an at least partially extended position (P1) and can be moved in a retraction direction (RE) from the at least partially extended position to the retracted position. The actuator unit is designed to move the transfer element from the retracted position to the at least partially extended position and in the process to provide an opening force (FA) for a motor vehicle door via the transfer element. Between the actuator unit and the transfer element a coupling element (18) is arranged and, when a defined threshold speed is exceeded and/or when a defined maximum load to be transferred is exceeded, which load acts on the opening device in the retraction direction, said coupling element at least partially decouples a force transfer between the transfer element and the actuator unit.

Description

Installation of a motor vehicle door

FIELD OF THE INVENTION

The present invention deals with the opening of a motor vehicle door and relates in particular to a positioning module for a motor vehicle door, a motor vehicle door module and a method for moving a motor vehicle door.

BACKGROUND OF THE INVENTION

In connection with increased user comfort and also in connection with new vehicle design concepts in which door handles are only arranged in a concealed manner, there are proposals for opening motor vehicle doors by means of an electric drive. For example, WO 2017/160787 A1 describes opening the vehicle door into a slightly raised position. However, it has been shown that, on the one hand, there is a need for larger installation distances and, on the other hand, less installation space is available due to other components.

SUMMARY OF THE INVENTION

One object of the present invention is therefore to provide a device for opening a motor vehicle door that is as compact as possible.

This object is solved by the subject matter of the independent claims. Further examples are given in the dependent claims. The following Aspects described also apply to the installation module for a motor vehicle door, the motor vehicle door module and the method for moving a motor vehicle door.

According to the invention, a positioning module for a motor vehicle door is provided. The erection module has an erection device with an actuator unit and a transmission element. The transmission element can be extended from a retracted position in an extension direction to an at least partially extended position, and can be moved from the at least partially extended position to the retracted position in a retraction direction. The actuator unit is designed to move the transmission element from the retracted position into the at least partially extended position and thereby to provide an opening force for a motor vehicle door via the transmission element. A coupling element is arranged between the actuator unit and the transmission element, which at least partially decouples a power transmission between the transmission element and the actuator unit when a specified limit speed is exceeded and/or when a specified limit load to be transmitted is exceeded, which acts on the positioning device in the retracting direction.

According to one example, the actuator unit has an electric motor and a gearbox arranged between the electric motor and the transmission element. The coupling element forms an overload protection for at least one of the group consisting of the electric motor and the transmission.

According to one example, the clutch element is designed as at least one from the group of i) freewheel, e.g. roller clutch, and ii) loop spring clutch.

According to one example, a return element is provided to move the transmission element from the extended position to the retracted position.

According to one example, the transmission element is a latch that is mounted so as to be displaceable in the longitudinal direction. The transmission has a rack and at least one gear that meshes with the rack. The rack is provided on the latch and the pinion is rotationally driven by the actuator unit. As an option, it is provided that the clutch element is provided on a rotationally driven gear wheel of the transmission.

According to one example, the actuator unit has a spindle drive with a worm wheel and a spindle drive, with the spindle drive forming the transmission element. The worm wheel is driven in rotation by the actuator unit and the coupling element is provided between the worm wheel and the spindle drive.

According to one example, the actuator unit has an axis of rotation on an output side and the axis of rotation of the actuator unit is arranged perpendicularly to the extension and retraction direction of the transmission element.

The actuator is, for example, an electric actuator, for example as an electromagnetic actuator that can be operated linearly (electromagnetic control element) or as an electromagnetic actuator that can be operated in a rotary manner (electric motor).

According to the invention, a motor vehicle door module is also provided. The motor vehicle door module has a positioning module according to one of the preceding examples and a frame structure element of a motor vehicle door opening. The installation module is held on the frame structure element and is designed to move a motor vehicle door, which is movably held on a frame structure, from a closed position to an open position.

According to one example, the raising module raises the motor vehicle door by at least 50 mm. For example, the raising module raises the motor vehicle door by at least 75 mm.

According to the invention, a method for moving a motor vehicle door is also provided. The procedure has the following steps:

Generating an opening force for the movement of a motor vehicle door with an actuator unit of an opening device;

Introduction of the raising force in a transmission element of the raising device, wherein the transmission element can be extended from a retracted position in an extension direction into an at least partially extended position, and from the at least partially extended position in a retraction direction into the retracted position is movable; and

Transmitting the opening force to open an automobile door.

The transmission element is extended by the actuator unit from the retracted position in the extension direction into an at least partially extended position and the motor vehicle door is opened.

A coupling element is arranged between the actuator unit and the transmission element, which at least partially decouples a power transmission between the transmission element and the actuator unit when a specified limit speed is exceeded and/or when a specified limit load to be transmitted is exceeded, which acts on the positioning device in the retracting direction.

It should be pointed out that the features of the exemplary embodiments of the positioning module for a motor vehicle door also apply to embodiments of the motor vehicle door module and the method for moving a motor vehicle door and vice versa. In addition, those features can also be freely combined with one another where this is not explicitly mentioned.

BRIEF DESCRIPTION OF THE DRAWINGS

Exemplary embodiments of the invention will be discussed in more detail below with reference to the attached drawings.

1 schematically shows an example of a positioning module for a motor vehicle door.

Fig. 2 shows schematically an example of a motor vehicle door module with a

Installation module according to Fig. 1.

Fig. 3 shows steps of an example of a method for moving a

motor vehicle door.

Fig. 4 shows another example of a positioning module for a motor vehicle door in a schematic horizontal section.

Fig. 5 shows the example of FIG. 4 in a schematic vertical section.

Fig. 6 shows a perspective view of another example of a

Installation module for a motor vehicle door in an exploded view. FIG. 7 shows the example from FIG. 6 in the assembled state.

DETAILED DESCRIPTION OF EMBODIMENTS

1 schematically shows an example of a positioning module 10 for a motor vehicle door. The erection module 10 has an erection device 12 . The positioning device 12 has an actuator unit 14 and a transmission element 16 . The transmission element 16 can be extended from a retracted position Po in an extension direction RA into an at least partially extended position Pi, and can be moved from the at least partially extended position Pi in a retraction direction R _E into the retracted position Po.

The actuator unit 14 is designed to move the transmission element 16 from the retracted position Po into the at least partially extended position Pi and to provide an opening force FA for a motor vehicle door via the transmission element 16 . A coupling element 18 is arranged between the actuator unit 14 and the transmission element 16, which, when a specified limit speed is exceeded and/or when a specified limit load to be transmitted, which acts on the positioning device 12 in the retracting direction R _E , is exceeded, initiates a power transmission between the transmission element 16 and the actuator unit 13 is at least partially decoupled.

The installation module 10 refers to a device with which the motor vehicle door can be set up, i.e. opened, at least a small distance. Setting up can also be referred to as exhibiting or offering the motor vehicle door. The set-up module 10 can also be referred to as a set-up unit or stand.

The actuator unit 14 relates to a drive for generating the raising force. The actuator unit 14 provides the driving force. For example, the actuator unit 14 can generate the driving force itself, for example when the actuator unit 14 comprises a motor. For example, the actuator unit 14 can also transmit the driving force from another component, for example as a transmission element of the driving force. The actuator unit 14 can also be referred to as an actuator or drive. The transmission element 16 refers to the parts or components with which the opening force FA is introduced to the motor vehicle door and into it. In one example, the transmission element 16 is designed as a rigid but movably held bolt. In another example, the transmission element 16 is a (gear) element that changes when a force is applied. The transmission element 16 can also be referred to as a transmission unit or extension ram or extension bolt.

The at least partially retracted position Po refers to a position of the transmission element 16 in which no force is transmitted, i.e. a starting position or rest position or rest position or rest position. In the starting position, the transmission element 16 can be fully retracted against a stop, for example in a housing. The term retracted refers to retraction relative to the body, but not necessarily retraction into an enclosure. The at least partially retracted position Po can also be referred to as the retracted position or drive-in position.

The at least partially extended position Po refers to a position of the transmission element 16 in which force is transmitted to the motor vehicle door or the motor vehicle door is open, i.e. a set-up position or working position or working location or working position. In the set-up position, the transmission element 16 can be extended completely against an internal stop, for example almost completely out of a housing. The term "deployed" refers to deployment relative to the body, but not necessarily deployment from a housing. The at least partially extended position can also be referred to as the extended position or extended position.

The direction of extension R _A refers to the direction of movement of the transmission element 16 for opening the motor vehicle door when the transmission element 16 moves from the starting position in the direction of the opening position. The extension direction R _A is, for example, a linear movement direction. In another example, the transmission element 16 moves along a movement path during extension, for example with a pivoting movement. The retraction direction RE relates to the direction of movement of the transmission element 16 when the transmission element 16 moves from the set-up position back towards the starting position (back). The retraction direction RAE is, for example, a linear movement direction. In another example, the transmission element 16 moves along a movement path when retracting, for example with a pivoting movement.

The coupling element 18 refers to an arrangement within the force curve with which the force curve can be temporarily suppressed, for example by blocking the force curve or by interrupting the force curve. The coupling element 18 can also be referred to as a coupling unit or coupling.

In one example it is provided that the coupling element 18 completely decouples the power transmission between the transmission element 16 and the actuator unit 14 .

In one example it is provided that the coupling element 18 decouples the power transmission between the transmission element 16 and the actuator unit 14 at least temporarily.

The term "vehicle doors" refers to doors and flaps of a vehicle that are used to access a vehicle interior, trunk or engine compartment, e.g. on pivoting or sliding doors, but also wing doors, but also includes vehicle flaps, vehicle lids or vehicle hoods, such as tailgates , boot lids or engine compartment hoods.

The limit speed in the entry direction RE can also be referred to as the entry limit speed.

The opening force for a motor vehicle door from the actuator unit 14 is transmitted via a free end of the transmission element 16 . The transmission element 16 is designed to be movable in a translatory manner, for example.

The installation module 10 is designed to transmit an opening or opening force to the motor vehicle door in such a way that it is opened so far that the user can open the door in the rebate or on a handle accommodated there. The formation of an external handle for normal handling of the door can thus be dispensed with. The positioning module 10 is able to offer or present the motor vehicle door to the user, so to speak. The installation module can therefore also be referred to as a door presenter.

The activation can take place, for example, via an interactive user interface, for example via an in-vehicle application or a remote-controlled activation. The activation can take place, for example, by proximity sensors, wireless signal transmitters, touch-sensitive sensors, etc.

2 schematically shows an example of a motor vehicle door module 100 with an example of the positioning module 10 described above and below. The motor vehicle door module 100 also has a frame structure element 102 of a motor vehicle door opening. The installation module 100 is held on the frame structure element 102 and is designed to move a motor vehicle door 104 movably held on a frame structure from a closed position to an open position. The motor vehicle door is indicated in dashed lines with a single line. A double arrow 106 indicates the movement of the transmission element 16 .

In one example it is provided that the positioning module 10 raises the motor vehicle door by at least 50 mm. For example, a set-up area of at least 75 mm is provided.

3 shows steps of an example of a method 200 for moving a motor vehicle door. The method 200 includes the following steps.

In a first step 202, an opening force for the movement of a motor vehicle door is generated with an actuator unit of an opening device;

In a second step 204, the raising force is introduced into a transmission element of the raising device. The transmission element 16 is extended from the retracted position Po in the extension direction RA into an at least partially extended position Pi, and can be moved from the at least partially extended position Pi in a retraction direction RE into the retracted position Po.

In a third step 206, the opening force is transmitted in order to open a motor vehicle door. The transmission element 16 is extended by the actuator unit 14 from the retracted position Po in the extension direction RA into an at least partially extended position Pi and the motor vehicle door is opened. The coupling element 18 is arranged between the actuator unit 14 and the transmission element 16 and, when a specified limit speed is exceeded and/or when a specified limit load to be transmitted, which acts on the positioning device 12 in the retracting direction, is exceeded, a force is transmitted between the transmission element 16 and the actuator unit 14 at least partially decoupled.

In one example, the actuator unit 14 has a drive element for generating a drive force for the transmission element 16 in the extension direction RA, for example a motor. In one example, the clutch element 18 is arranged for the power transmission of the driving force between the drive element and the transmission element 16 .

FIG. 4 shows a further example of the installation module 10 for a motor vehicle door in a schematic horizontal section. Fig. 5 shows the example of FIG. 4 in a schematic vertical section.

As an option, it is provided in FIGS. 4 and 5 that the actuator unit 14 has an electric motor 20 and a gear 22 arranged between the electric motor 20 and the transmission element 16 . The coupling element 18 forms an overload protection for at least one of the group of electric motor 20 and transmission 22.

For example, the limit speed is a maximum number of revolutions of the electric motor 20.

The coupling element 18 is designed, for example, to transmit an opening force to the motor vehicle door which is capable of deicing the motor vehicle door, i.e. breaking up the ice. This function is also known as the ice breaker function.

In one example, the limit speed relates to an actuation speed of the transmission element 16. In a further example, the limit speed relates alternatively or additionally to a speed of the actuator unit 14 driven by the transmission element 16.

The coupling element 18 is decoupled, for example, in the event of a sudden peak load, for example when a motor vehicle door is slammed shut or thrown shut.

In one example, the limit load to be transmitted relates to the force acting from the transmission element 16 on the coupling element 18 and/or the actuator unit 14 .

In the example shown in FIG. 4, the coupling element 18 is designed as a loop spring coupling.

The snare spring clutch is formed, for example, by a cylindrical spiral spring, in which a cylindrical counterpart engages at both ends. Due to the spiral winding of the spring, the cylindrical counterparts are clamped by the spring in one direction of rotation, and thus power is transmitted; in the other direction of rotation, the spring is loosened, so that there is no longer a clamping effect and no or at least less force is transmitted.

The loop spring clutch is also referred to as a wrap spring clutch.

In another example, the clutch element 18 is designed as a freewheel. The freewheel can also be referred to as a one-way clutch. The freewheel is configured to transmit power in one direction of rotation and not to transmit power in the other direction of rotation. In a roller freewheel, for example, rolling elements, so-called pinch rollers, are provided between a rotating inner part and an outer part. For this purpose, the receiving spaces for the pinch rollers are designed with a rising surface, so that the pinch rollers wedge in one direction of rotation between the inner part and the outer part and transmit the force. Another variant of the freewheel is the so-called sprocket freewheel with spring-loaded Latching elements that latch in one direction of rotation in a surface with a toothed profile and cannot be held in the direction of rotation.

The coupling element 18 is designed, for example, as a roller freewheel clutch (or needle bearing clutch) or an overrunning clutch (sprag clutch).

In one example, the clutch element 18 is a slip clutch.

In the example shown in FIG. 4, a return element 24 is provided as an option in order to move the transmission element 16 from the at least partially extended position Pi into the retracted position Po. The return element 24 is, for example, a spring that is tensioned when it is extended. The transmission element 16 is retracted again, for example, after the open motor vehicle door has been offered, for example if the motor vehicle door is opened further by the user or if the user has not opened the motor vehicle door further within a specified presentation time.

The return element 24 can also be referred to as a retraction element or retraction drive.

In the example shown in Fig. 4, the transmission element 16 is a longitudinally displaceably mounted bolt 26. In the retracted position, the bolt 26 is at least partially accommodated in a housing 28 and, in the at least partially extended position Pi, projects further out of the housing 28 than in the retracted position Po.

In an alternative example, the actuator unit 14 is designed to provide a retraction force for the transmission element 16 . In such a case, the coupling element 18 is not designed as a freewheel.

The transmission 22 has a rack 30 and at least one gear 32 which meshes with the rack 30 . The rack 30 is provided on the latch 26 and the pinion 32 is rotationally driven by the actuator unit 14, i.e. the motor 20. The clutch member 18 is provided on a rotationally driven gear of the transmission 22 .

In Fig. 4, the electric motor 20 is formed with an output shaft 34 on which a first gear 36 is provided. The transmission also has a second (larger) gear wheel 38 on a shaft 40 for translation, ie adjustment of the speed and torque. On the shaft 40, in turn, a third (smaller) gear is provided for Example, the gear 32 forms, which meshes with the rack 30. A movement arrow 42 indicates the entry direction RE and exit direction RA.

For example, the clutch element 18 is provided on the first gear wheel 36 that is driven in rotation by the actuator unit 14 .

In FIG. 5 the rotation of the first gear wheel 36 is indicated with a first rotation arrow 48, for example in a clockwise direction. The rotation of the second gear 38 is indicated with a second rotation arrow 50, for example counterclockwise.

In an alternative embodiment (not shown), the actuator unit has a spindle drive with a worm wheel and a spindle drive, with the spindle drive forming the transmission element. The worm wheel is rotated by the actuator unit. The coupling element is provided, for example, between the worm wheel and the spindle drive. In one example, a gear is provided between the worm wheel and the actuator unit. In a further example, the coupling element is provided between the worm wheel and the gearbox instead of between the worm wheel and the spindle drive. In a further example, the coupling element is provided between the gearbox and the actuator unit, instead of between the worm wheel and the gearbox.

In an example indicated in FIG. 4, the bolt is at least partially accommodated in a housing 44 in the retracted position Po and protrudes further out of the housing 44 in the at least partially extended position Pi than in the retracted position Po.

In an option also shown in FIG. 4 , the actuator unit 14 has an axis of rotation 46 on an output side. The axis of rotation 46 of the actuator unit 14 is arranged perpendicular to the extension and retraction direction RA, RE of the transmission element 16 .

FIGS. 6 and 7 show a perspective view of a further example of the positioning module 10 for a motor vehicle door. Fig. 6 shows an exploded view; FIG. 7 shows the example from FIG. 6 in the assembled state.

A latch 52 is formed with a front stop 54 for abutting the door or body. The bolt 52 also has an internal Rack 56 on. The rib structure 57 shown is used for stability and attachment of the toothed rack 56 and can also not be provided. The bolt 52 can be moved into a housing 58 and a receptacle 60 provided therein. Gears 62 and shafts 64 of a transmission are also provided. The tooth profiles of the gears are not shown.

As a variant, it is provided that the toothed rack points downwards with the tooth profile when installed and the gear wheel meshes with the toothed rack from below.

In a further option, the transmission element 18 can be arranged with the actuator unit 14 for a specified period of time in the at least partially extended position Pi. This enables the door to be offered to the user. If the operator does not open the door further manually, the transmission element of the positioning device moves back into the retracted position and the door closes again.

In one variant, it is provided that the positioning device is designed as a closing aid, and the actuator unit is able to move the transmission element from the at least partially extended position in the retracting direction in the direction of the retracted position until the motor vehicle door is released from a closing aid or a motor vehicle door lock is detected and can be closed with a closing force; for example, the motor vehicle door is pressed against the door seals by the closing force and brought into a closed position of the motor vehicle door.

In a further variant, it is provided that the positioning device is designed as a closing aid, and the actuator unit is able to move the transmission element from the at least partially extended position in the retracting direction into the retracted position, thereby providing a closing force for the motor vehicle door position, for example to press the door against the door seals.

In one example, the stand may be attached to the vehicle body, for example. In another example, the positioning device can be attached to the motor vehicle door, for example.

In one example, the positioning device can be fastened to a supporting structure of a vehicle body in the area of the opening of the motor vehicle door to be positioned. For example, a stop is provided on the motor vehicle door that is to be opened, so that the transmission element can rest against it.

In another example, the positioning device can be fastened to a supporting structure of the motor vehicle door that is to be opened. A stop for abutting the transmission element can then be provided, for example, at a suitable point on the supporting structure of the vehicle body.

For example, the positioning device is arranged on a side opposite a movable door support, e.g. For example, the positioning device is arranged centrally in the vertical, for example in the vicinity of a motor vehicle door lock of the motor vehicle door.

The exemplary embodiments described above can be combined in different ways. In particular, aspects of the devices can also be used for the embodiments of the method and vice versa.

It should also be noted that "comprising" does not exclude other elements or steps, and "a" or "an" does not exclude a plurality. Furthermore, it should be pointed out that features or steps that have been described with reference to one of the above exemplary embodiments can also be used in combination with other features or steps of other exemplary embodiments described above. Any reference signs in the claims should not be construed as limiting.

Claims

EXPECTATIONS:

1. A positioning module (10) for a motor vehicle door, the positioning module having a positioning device (12) with: an actuator unit (14); and a transmission element (16); wherein the transmission element can be extended from a retracted position (Po) in an extension direction (RA) into an at least partially extended position (Pi), and can be moved from the at least partially extended position in a retraction direction (RE) into the retracted position; wherein the actuator unit is designed to move the transmission element from the retracted position into the at least partially extended position and thereby to provide an opening force (FA) for a motor vehicle door via the transmission element; and wherein a coupling element (18) is arranged between the actuator unit and the transmission element, which, when a specified limit speed is exceeded and/or when a specified limit load to be transmitted, which acts on the positioning device in the retracting direction, is exceeded, causes a power transmission between the transmission element and the actuator unit at least partially decoupled.

2. Installation module according to claim 1, wherein the actuator unit has an electric motor (20) and a gear (22) arranged between the electric motor and the transmission element; and wherein the coupling element forms an overload protection for at least one of the group of electric motor and transmission.

3. Installation module according to claim 1 or 2, wherein the limit speed relates to: i) an actuation speed of the transmission element; and or ii) a rotational speed of the driven by the transmission element

actuator unit.

4. Installation module according to claim 1, 2, or 3, wherein the limit load to be transmitted relates to the force acting on the coupling element and/or the actuator unit from the transmission element.

5. Installation module according to one of the preceding claims, wherein the coupling element is designed as at least one from the group of: i) freewheel; and ii) sling spring clutch.

6. erection module according to any one of the preceding claims, wherein a

Return element (24) is provided in order to move the transmission element from the at least partially extended position to the retracted position.

7. Installation module according to one of the preceding claims, wherein the

The transmission element is a latch (26) mounted so as to be displaceable in the longitudinal direction; wherein the gear has a rack (30) and at least one gear (32) meshing with the rack; wherein the rack is provided on the latch and the pinion is rotationally driven by the actuator unit; and wherein the clutch member is provided on a rotationally driven gear of the transmission.

8. Installation module according to one of the preceding claims, wherein the actuator unit has a spindle drive with a worm wheel and a spindle drive, the spindle drive forming the transmission element; wherein the worm wheel is rotationally driven by the actuator unit; and wherein the coupling element is provided between the worm wheel and the spindle drive.

9. Installation module according to claim 7 or 8, wherein the bolt is at least partially housed in a housing (28) in the retracted position and protrudes further from the housing in the at least partially extended position than in the retracted position.

10. Installation module according to one of the preceding claims, wherein the actuator unit has an axis of rotation (46) on an output side; and wherein the axis of rotation of the actuator unit is arranged perpendicularly to the extending or retracting direction of the transmission element.

11. Installation module according to one of the preceding claims, wherein the transmission element can be arranged with the actuator unit for a specified period of time in the at least partially extended position.

12. Installation module according to one of the preceding claims, wherein the installation device can be fastened to one of the group consisting of the motor vehicle door and the vehicle body.

13. A motor vehicle door module (100), comprising: a positioning module (10) according to any one of the preceding claims; and a frame structural member (102) of an automotive vehicle door opening; wherein the installation module is held on the frame structure element and is designed to move a motor vehicle door movably held on a frame structure from a closed position to an open position.

14. Motor vehicle door module according to claim 13, wherein the raising module raises the motor vehicle door by at least 50 mm; preferably by at least 75 mm.

15. A method (200) for moving a motor vehicle door, wherein the

procedure has the following steps:

Generating (202) an opening force for the movement of a motor vehicle door with an actuator unit of an opening device;

introducing (204) the raising force into a transmission element of the raising device, wherein the transmission element can be extended from a retracted position in an extension direction into an at least partially extended position, and can be moved from the at least partially extended position in a retraction direction into the retracted position;

transmitting (206) the popping force to pop a motor vehicle door; wherein the transmission element is extended by the actuator unit from the retracted position in the extension direction into an at least partially extended position and the motor vehicle door is opened; and wherein between the actuator unit and the transmission element

Coupling element is arranged, which at least partially decouples a power transmission between the transmission element and the actuator unit when a specified speed limit is exceeded and/or when a specified limit load to be transmitted is exceeded, which acts on the installation device in the retraction direction.