DE102020101806A1 - Positioning device for a motor vehicle door - Google Patents

Abstract

The invention relates to a positioning device (1) for a motor vehicle door element (4) having an electric drive (8) and an adjusting means (7), the adjusting means being actuatable by means of the electric drive (8), and wherein the electric drive (8 ) and the adjusting means (7) a spring accumulator (18) is arranged.

Description

The invention relates to a positioning device for a movably arranged component on the motor vehicle, in particular a motor vehicle door element, in particular a side door, having an electric drive and an adjusting means, the adjusting means being actuatable by means of the electric drive.

Motor vehicle doors are consistently equipped with locking members for fixing the door leaf in predetermined angular positions in comparison to the motor vehicle body. For this purpose, the locking member is articulated to the motor vehicle body, mostly in such a way that its pivot point lies outside the pivot axis of the door leaf, which is predetermined by the hinge axes. The locking member generally protrudes into the interior of the door leaf via an opening on a side edge. Due to its articulation on the motor vehicle body, which is eccentric with respect to the hinge axes, the locking member executes extension and retraction movements relative to the door leaf when the door leaf is moved. The locking member is also generally referred to as a tether.

Such tethers usually have a locking arm or locking arm with several locking recesses. Locking elements attached to the door leaf can dip into the locking recesses. As a result, the predetermined angular positions of the door leaf in comparison to the motor vehicle body can be realized when the door is opened. Such a procedure is well known, for which purpose only refer to the DE 41 30 782 A1 is referred.

Vehicles according to the current state of the art sometimes have no outside door handles on the side doors for opening. In order to be able to take hold of these motor vehicle doors and open them completely, positioning devices have become known. Setting up a door is to be understood as moving the door towards an opening gap in the range from 20 mm to 200 mm, preferably from 50 mm to 160 mm, with respect to the motor vehicle body. This enables the operator of the motor vehicle to grasp the door element and to open it completely. The at least one electric drive operating on the door leaf ensures that the door leaf is opened at least in a gap with respect to the motor vehicle body.

In the prior art according to DE 10 2013 202 801 A1 a device for actuating a motor vehicle door with a locking function is described. The device has an actuator which can be fastened to the motor vehicle door and a pivot lever which can be pivoted about an actuator axis by the actuator. In addition, an actuating arm is provided for fixing the motor vehicle door in predetermined angular positions compared to the motor vehicle body.

the DE 10 2015 103 830 A1 discloses a linear actuator cooperating with the locking member. An adjusting nut, which is driven by an electric motor, is able to operate the unlocked door through an opening gap. For this purpose, an adjusting rod is provided which moves a latching arm, as a result of which the door element is moved from an initial position into an open position. In addition to erecting the door, the document also discloses a system for fully opening the door element.

The solutions known from the prior art for erecting a door element are based on electrical drives, by means of which the door element can be moved from a closed position into an open position. One problem that arises when setting up a door element is that the actuating forces can vary, with the electric drive always being able to provide a predetermined opening force.

In order to provide sufficient power in every case, even in the case where, for example, a frozen door or flap has to be opened, the motors must be correspondingly large or equipped with upstream gears. Large engines are expensive and gearboxes require a corresponding amount of space. This is where the invention comes into play.

Based on the known prior art, the object is to provide an improved positioning device for a component that is movably arranged on the motor vehicle, in particular a motor vehicle door element. The object is to provide an erecting device in which the electric drive can work independently of the erecting force to be made available. In addition, the electric drive is intended to enable the actuating movement to be controlled at the same time. Ultimately, the task arises of providing an inexpensive and structurally simple solution for actuating the door element.

The object is achieved according to the invention by the features of independent claim 1. Advantageous embodiments of the invention are specified in the subclaims. It is pointed out that the exemplary embodiments described below are not restrictive; rather, any possible variations of the features described in the description and the subclaims as well as the figures are possible.

The object of the invention is achieved in that a positioning device is provided for a component movably arranged on the motor vehicle, in particular a motor vehicle door element, comprising an electric drive and an actuating means, the actuating means being actuatable by means of the electric drive and wherein between the drive and the actuating means a spring accumulator is arranged. The construction of the erecting device according to the invention now creates the possibility of moving the motor vehicle door element independently of the erecting force to be made available. In particular, the object is achieved in that the movement of the actuating means is controlled by means of the drive during erection. The spring accumulator serves to support the movement of the actuating means. The electric drive controls the movement of the actuating means and at the same time the spring accumulator is relieved, whereby sufficient force can be made available to move the door element with the lowest possible drive forces.

The electric drive is preferably an electric direct current motor which interacts with the actuating means via, for example, a worm gear. Of course, it is also conceivable that the electric motor acts directly and, for example, in a toothing on the actuating means and thus enables the actuating means to be actuated.

The spring accumulator is characterized by a spring element which has at least one spring element, the spring element being able to be tensioned by means of the adjusting means and with the aid of the electric drive. The spring element is preferably designed as a spiral spring and preferably as a compression spring. Of course, the spring element can also be a tension spring, the tension spring being arranged in the spring accumulator in such a way that the spring accumulator can be tensioned by means of the adjusting means. For this purpose, the spring accumulator accommodates the first spring element and the actuating means. By moving the spring accumulator and in particular the housing of the spring accumulator, the spring element can be tensioned against a fixed stop.

The component that is movably arranged on the motor vehicle is preferably a side door of a motor vehicle, which can be moved from a closed position to an open position by means of the positioning device. However, it is also conceivable that the component is a flap or cover or a rear door on a motor vehicle or a utility vehicle.

By means of the installation device, a z. B. a flap or a door element can be set up slightly so that the operator can grasp the door element and open it completely. The positioning device preferably interacts with an electric motor vehicle lock, so that the operator can electrically unlock the motor vehicle lock by means of, for example, a radio remote control, whereby the door element can be freely pivoted. The positioning device combines the electrical opening of the lock with the opening of the door element in certain areas.

In an initial position, in particular a basic position, the spring accumulator is tensioned, which results in an advantageous embodiment variant of the invention. The spring accumulator is tensioned after the motor vehicle door element has been erected. In other words, after the door element has been completely opened, the spring store is moved by means of the electric drive in such a way that the spring element arranged in the spring store is tensioned.

In the unactuated state of the erecting device, the spring accumulator is thus in a pretensioned position. If the door is now closed, the spring accumulator is in the basic position or starting position in which the spring element is tensioned in the spring accumulator. If, based on this, the operator gives the opening signal for the door element, the locking system is unlocked, whereby the door element is released. By means of the erecting device, the spring accumulator is then released in parallel by means of the electric drive.

The electric drive continuously adjusts the spring accumulator, which means that the motor vehicle door element can be set up evenly and with the aid of springs. The spring accumulator supports the erecting movement by relieving the spring element, which means that only small forces have to be made available in the electric motor. The electric motor or the electric drive thus only controls the release of the force of the spring element, the actual erecting force being provided by the spring element. The door element is therefore set up under spring tension. At the same time, however, an at least supporting opening movement can also be initiated in the motor vehicle door element by the movement of the spring energy store. Essentially, however, the electric drive is used to control the release of the spring force, the spring force acting on the actuating means.

In an advantageous embodiment variant, the spring accumulator can be tensioned and released by means of the drive. The electric drive can move the spring accumulator, namely move it in such a way that a spring element arranged in the spring accumulator is tensioned. For this purpose, the spring energy store or a housing of the spring energy store can be moved. In the case in which the spring element is designed as a compression spring, tensioning of the Spring element take place in that the spring accumulator is moved in one direction, so that the spring element is compressed. In the compressed state of the compression spring, the spring store then acts as an energy store. The compressed state of the compression spring in the spring accumulator defines the starting position of the positioning device.

If the operator gives an opening command to the positioning device or initiates an opening signal, the energy stored in the spring energy store can be released by means of the drive. The released energy can then be used to erect the motor vehicle door element. A tensile force is preferably generated by means of the adjusting means. The tensile force can then be used to mechanically initiate an adjusting movement of the motor vehicle door element. Depending on the design of the positioning device, it is of course also conceivable to provide a pressure and / or pushing force in the positioning device when the spring accumulator is released.

It can also be advantageous if the door element can be actuated, in particular pivoted, by means of a relaxation of the spring accumulator. The spring store can be integrated into the motor vehicle door element, so that the relaxation movement of the spring store, which is controlled and initiated by the electric drive, can be converted into a movement of the door element. The spring accumulator and in particular the positioning device itself can be part of the motor vehicle lock. In other words, the positioning device can be integrated into the motor vehicle lock, so that a structural unit is formed which can be easily mounted in the motor vehicle door element. It is also conceivable, however, that the erecting device is arranged as a separate component in the motor vehicle door element and erects the motor vehicle door element by means of a pulling or pushing movement. Preferably, however, a pulling movement is initialized by means of the spring accumulator, the actuating means being moved by means of the relaxation of the spring element in the spring accumulator in such a way that the erecting device generates a pulling force that can be used to erect the door element.

In a further embodiment variant, the door element can be transferred from a closed position to an open position by means of the positioning device. In the starting position, the spring energy store is tensioned. This starting position maps the closed position of the door element in which the motor vehicle door element is held in the closed position by means of the motor vehicle lock. The closed position of a motor vehicle side door lock is determined by a main locking position of the motor vehicle lock. Starting from this closed position, the main locking position can preferably be left by electrically opening the motor vehicle lock, the motor vehicle lock being unlocked and a rotary latch contained in the motor vehicle lock being released. A ratchet made up of a rotary latch and a pawl and arranged in the motor vehicle lock usually works together with a lock holder; the rotary latch and pawl form a ratchet that can be locked in a pre-latching position and a main latching position. When the locking mechanism is unlocked, the pawl is released from the rotary latch and releases the lock holder. The door can then be moved or pivoted. After unlocking the locking mechanism, the positioning device is able to move the motor vehicle door element from the closed position or starting position into an open position in which an operator of the motor vehicle is able to grasp the door element and further open it completely. This way of setting up the motor vehicle door element makes it possible, for example, to design a motor vehicle door element without an outer door handle.

If the spring accumulator has a first spring element and at least one second spring element, this results in a further embodiment variant of the invention. A combination of two spring elements in the spring accumulator makes it possible to vary the force for erecting the motor vehicle door element. A first spring element can then be tensioned in a first position of the spring accumulator by means of the electric drive. If, on the other hand, the spring store is moved into a second position, the second spring element is also tensioned, as a result of which different energy stores can be generated in the spring store. This can be particularly advantageous if, for example, higher erecting forces are required in the erecting device, as occur, for example, with icy doors.

The spring elements can be actuated sequentially and by means of the electric drive, that is to say can be tensioned and / or relaxed. The spring constants of the spring elements can vary so that different forces can be achieved, but it is also conceivable that the spring elements have the same spring constants, which can be tensioned one after the other by moving the spring accumulator alone. In an advantageous manner, the spring forces of the spring elements add up in such a way that actuation of the door element can be controlled by means of the electric drive. For this purpose, the spring energy store and in particular the housing of the spring energy store can be moved by means of the electric drive.

This results in a significant advantage of the invention, since the force for setting up comes from the spring, the speed of the Can be controlled by the motor. In other words, high adjusting speeds can be achieved, with only a small motor having to be used. In an emergency, low speeds but high forces can be realized. An emergency exists, for example, if the movable component cannot be erected due to jamming or freezing. In this case, only the force of the first spring element is available for setting up. The motor controls the release of the energy stored in the spring.

According to the invention, however, in the tensioned state of the first spring, the second spring element can additionally build up a force when the second spring element is additionally tensioned by means of the drive. In this emergency situation, the motor must tension the second spring against the force of the first spring in order to generate an additional actuating force. Low speeds but high forces can be achieved by coupling the two springs.

The structure according to the invention has a further advantage, namely that the installation device and in particular the electric drive are protected against incorrect actuation. If, for example, a door element is gripped by an operator during the ongoing opening process and closed again at excessive speed, the resulting movement of the actuating means is absorbed by the spring elements without damaging the motor and / or a gear. The spring element (s) thus has a double function: on the one hand, the spring elements provide the necessary force for erecting the door element and, on the other hand, the spring elements serve as a means of securing against incorrect operation.

The spring elements, which are preferably arranged in an interior of the spring accumulator, are relaxed or tensioned during the process. In this case, the first spring element can be tensioned in an initial position of the spring energy store and put the actuating means under tension. By releasing the first spring element by moving the housing of the spring energy store, the actuating means can then initialize a movement and open the door. If the compressive force of the first spring element is not sufficient to set up the door element, for example because the door seal is frozen, the housing of the spring accumulator can be moved further in order to now tension the second spring element. This second spring force can then increase the tensile force on the adjusting means and generate a high force in the positioning device. This shows a further advantage of the construction of the installation device according to the invention, namely that the drive only has to tension a spring element in order to generate different forces in the installation device.

If the door element cannot be set up, a tensile stress acts in the adjusting means, which is held by the frozen door. If the spring energy store or the housing of the spring energy store is now moved and the second spring element is tensioned, then only a force has to be provided which tension the second spring element. In this case, however, the forces of the spring elements add up, so that high forces can be made available for breaking the ice and setting up the door element. Spring forces of 0 to approx. 200 N, preferably 80 to 160 N, are preferably provided by means of the first spring element, with forces of 0 to approx. 400 N, preferably up to 350 N, being able to be provided by means of the second spring element. In total, the forces of the spring elements can add up to approx. 500 N.

In a further embodiment variant of the invention, the spring accumulator has a traction means, in particular a traction element, wherein a traction force can be transmitted to a drive unit for the door element by means of the traction means. The spring accumulator can be arranged in the motor vehicle lock or separately in the motor vehicle door element. The erection device is preferably designed in such a way that an adjusting means in the spring accumulator serves as a traction means. This preferred embodiment makes it possible to generate tensile forces which can be used to erect the motor vehicle door element by relaxing the spring element or the spring elements. A drive unit is arranged downstream of the traction means and mechanically erects the door by means of the actuating means or traction means or pulling element. In the simplest case, the drive unit can be designed as a lever element, the lever element acting, for example, on a door strap. A door catch strap is present in the motor vehicle lock and usually secures the opening movement of the door element, with different latching positions likewise usually being achievable by means of the door catch strap. The door can be held in different locking positions by means of the door strap. If the drive unit now acts on the door stop strap, the door element can be erected with the smallest possible number of components.

It is of course also conceivable that the drive unit itself has an adjusting rod which makes it possible to exert a force on the door element in order to set up the door element. The drive unit or the control rod for erecting the door element can be arranged in the area of the door hinges, but it is also conceivable that the drive unit arranged downstream of the spring accumulator in the Is arranged in the area of the motor vehicle lock and acts in the area of the door lock on the body and / or the lock holder.

In a further advantageous embodiment variant, a Bowden cable is arranged between the spring accumulator and the drive unit. The arrangement of a Bowden cable between the spring store and the drive unit enables the spring store to be arranged in the motor vehicle door element at a distance from the drive unit. Tensile forces can easily be transmitted by means of the Bowden cable. Depending on the arrangement of the Bowden cable, it is of course also conceivable that compressive forces are transmitted to the drive unit by means of the Bowden cable. The inventive construction of the erecting device now creates the possibility of providing an energy store with which a door can be erected, while the spring energy store can be tensioned independently of the erecting force to be made available. This offers the advantage that it is possible to work with the smallest possible motors, which always only have to provide low forces for tensioning the spring elements. In this way, the spring elements, and in particular the forces of the spring elements, can be added without having to provide large motors for tensioning the spring elements. In addition, the structure according to the invention of the erection device offers the possibility of controlling the erection by a controlled relaxation of the spring elements. For this purpose, only small forces are to be made available in the electric drive, since the relaxation of the spring accumulator is accompanied by a relaxation of the spring element, whereby the adjusting movement of the spring accumulator or the housing of the spring accumulator is supported by the spring force.

The invention is explained in more detail below with reference to the accompanying drawings using an exemplary embodiment. However, the principle applies that the exemplary embodiment does not limit the invention, but merely represents an advantageous embodiment. The features shown can be carried out individually or in combination with further features of the description as well as the claims individually or in combination.

• 1 eine prinzipielle Darstellung einer Aufstellvorrichtung für ein Kraftfahrzeugtürelement in einer Seitenansicht und in einer Schnittdarstellung des Federspeichers, wobei der Federspeicher in einer Grundstellung wiedergegeben ist,
• 2 die Aufstellvorrichtung in einer Normalbetätigung, das heißt einer Offenstellung des Türelements, und
• 3 die Aufstellvorrichtung bzw. den Federspeicher in einer Betätigungsstellung mit erhöhter Kraft.

It shows:

• 1 a basic illustration of a positioning device for a motor vehicle door element in a side view and in a sectional illustration of the spring energy store, the spring energy store being shown in a basic position,
• 2 the positioning device in a normal actuation, that is to say an open position of the door element, and
• 3 the positioning device or the spring accumulator in an actuating position with increased force.

In the 1 is a set-up device 1 reproduced in a schematic representation. The installation device 1 is done with a Bowden cable 2 together, the Bowden cable with a drive unit 3 cooperates. The installation device 1 , Bowden cable 2 and drive unit 3 in this embodiment together form the positioning device for the motor vehicle door element 4th . The drive unit 3 has an adjusting rod 5 on, with the control rod 5 again with the motor vehicle body 6th connected is. The installation device 1 is in this embodiment with a Bowden cable 2 and a drive unit 3 equipped, but this is only to be understood as an example, since the installation device 1 and that in the installation device 1 contained adjusting agents 7th also directly with the vehicle body 6th can be engaged.

The installation device 1 is by means of an electric drive 8th driven. The electric drive 8th has a snail 9 on, taking the snail 9 with a worm wheel 10 combs and the worm wheel 10 a means of transmission 11 drives. The means of transmission 11 can be a spindle, for example. The means of transmission 11 turn is solid with a housing 12th connected so that by means of the electric drive 8th and about the gearbox 9 , 10 , 11 the case 12th can be moved in the direction of arrow P1.

Inside 13th of the housing 12th is a first spring element 14th and a second spring element 15th arranged. For actuation or support of the spring elements 14th , 15th has the actuating means 7th a preferably circular contact surface 16 on. The first spring element is thereby 14th between the contact surface 16 and a fixed mounting surface 17th held or tense. The mounting surface 17th can be part of a motor vehicle, but can also be part of the motor vehicle door element 4th form. The mounting surface 17th forms a fixed system and can also be used as a mounting surface for the installation device 1 serve.

In the 1 is the starting position A. reproduced in which the motor vehicle door element 4th is in the closed position. The case 12th , the actuating agent 7th , the first spring element 14th , the second spring element 15th and the mounting surface 17th form the spring accumulator in this exemplary embodiment 18th . The spring accumulator 18th is designed such that by means of the adjusting means 7th a pulling force F. in the Bowden cable 2 or the drive unit 3 can be initiated.

the 1 shows the starting position A. where the transmission medium 11 or the housing 12th in the direction of arrow P1 and in the 1 was driven to the right. By moving the case 12th in the direction of the mounting surface 17th became the first spring element designed as a compression spring 14th curious; excited. The first spring element 14th forms an energy store between the mounting surface 17th and the contact surface 16 of the adjusting agent 7th . Shall now proceed from the starting position A. the motor vehicle door element 4th in an open position E. are transferred, so will the housing 12th by means of the electric drive 9 in the direction of arrow P1 and in the 1 move to the left.

The open position O is in the 2 reproduced. The case 12th of the spring accumulator 18th was moved in the direction of the arrow P1 to the left, whereby the first spring element 14th relaxed and the energy to the actuating agent 7th transmits. The electric drive 8th insofar only controls the release of the energy from the spring energy store 18th . For setting up the door element 4th only a low motor power is therefore required, since the motor is the spring element 14th relaxed, which in turn advantageously results in short positioning times for setting up the door element 4th result. Will the actuator 7th , like in the 2 As shown, move in the direction of arrow P1 to the left, the actuating movement of the actuating element 7th by means of the Bowden cable 2 to the drive unit 3 transfer. One in the drive unit 3 included pivotable lever 19th can about its pivot axis 20th be pivoted around, in the direction of the arrow P2 . The pivoting movement of the lever 19th then leads in interaction with the control rod 5 to the fact that the motor vehicle door element 4th is set up.

In the 3 the state is now reproduced in which the motor vehicle door element 4th can be opened with increased force. For the usual opening of the motor vehicle door element 4th became the case 12th of the spring accumulator 18th in the direction of arrow P1 into the open position O procieedings. For example, due to an iced door seal, the actuating agent 7th the movement of the housing 12th under the force of the first spring element 14th do not follow. In this case, the second spring element is now 15th activated.

A method of housing 12th about the open position O out in the direction of arrow P1 to the left into an icebreaking position E. leads to the fact that, in addition, the second spring element 15th is tensioned. The spring forces of the first and second spring elements 14th , 15th in this case add up to an increased force, so that even in the event of the motor vehicle door element being trapped or frozen 4th a sufficient and increased strength FH is available.

Advantageously, by means of the electric drive 8th only one spring is always tensioned or a relaxation of the spring elements 14th , 15th take place so that you can work with low electrical power. Low electrical power only requires small motors and small dimensions of the drive elements. After setting up the motor vehicle door element 4th becomes the spring accumulator 18th back in its in the 1 shown starting position A. transferred back.

List of reference symbols

1

Installation device

2

Bowden cable

3

Drive unit

4th

Motor vehicle door element

5

Control rod

6th

Motor vehicle body

7th

Thickening agent

8th

electric drive

9

snail

10

Worm wheel

11

Means of transmission

12th

casing

13th

Inside of the case

14th

first spring element

15th

second spring element

16

Contact surface

17th

Mounting surface

18th

Spring accumulator

19th

lever

20th

Swivel axis

P, P2

arrow

A.

Starting position

O

Open position

E.

Icebreaking position

F, FH

traction

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 4130782 A1 [0003]
• DE 102013202801 A1 [0005]
• DE 102015103830 A1 [0006]

Claims (10)

Positioning device (1) for a motor vehicle door element (4) having an electric drive (8) and an adjusting means (7), wherein the adjusting means (7) can be actuated by means of the electric drive, characterized in that between the drive (8) and the adjusting means (7) a spring accumulator (18) is arranged. Installation device (1) Claim 1 , characterized in that the spring accumulator (18) is tensioned in an initial position (A). Installation device (1) according to one of the Claims 1 or 2 , characterized in that the spring accumulator (18) can be tensioned and relaxed by means of the drive (8). Installation device (1) according to one of the Claims 1 until 3 , characterized in that the door element (4) can be actuated, in particular pivoted, by means of a relaxation of the spring accumulator (18). Installation device (1) according to one of the Claims 1 until 4th , characterized in that the door element (4) can be transferred from a closed position to an open position (O) by means of the positioning device (1). Installation device (1) according to one of the Claims 1 until 5 , characterized in that the spring accumulator (18) has a first spring element (14) and at least one second spring element (15). Installation device (1) according to one of the Claims 1 until 6th , characterized in that the spring elements (14, 15) can be actuated sequentially from one another and by means of the electric drive (8). Installation device (1) according to one of the Claims 1 until 7th , characterized in that the spring elements (14, 15) can be actuated with the drive (8) in such a way that the spring forces (F, FH) add up. Installation device (1) according to one of the Claims 1 until 8th , characterized in that the spring accumulator (18) has a traction means (7), whereby a traction force (F, FH) can be transmitted to a drive unit (3) of the door element (4) by means of the traction means (7). Installation device (1) one of the Claims 1 until 9 , characterized in that a Bowden cable (2) is arranged between the spring accumulator (18) and the drive unit (3).

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