DE102010063952A1 - Drive for adjusting an adjustable element of a motor vehicle - Google Patents

Abstract

A drive (1) is used to adjust an adjustable element (2) of a motor vehicle. The drive (1) has a gear (32) and a helix (5), the helix (5) being connected to the adjustable element (2). Several teeth (43, 44, 45) of the gearwheel (32) mesh with the helix (5). Furthermore, a drive (1) for adjusting an element (2) of a motor vehicle is specified, in which a motor (3) and a further motor (4) are provided, the motor (3) and the further motor (4) together for Adjusting the element (2) act at least indirectly on the element (2). The action here preferably takes place via ascending spirals (5, 6) which can be subjected to tension and pressure.

Description

State of the art

The invention relates to a drive for adjusting at least one adjustable element of a motor vehicle. Specifically, the invention relates to the field of direct drives used to adjust a sunroof, blind, window, seat, flap, or other element of a motor vehicle.

From the EP 0 261 525 B1 a transmission arrangement for a window lift drive of a motor vehicle is known. The known gear arrangement has a rotatably mounted in a transmission housing output shaft. The output shaft is connected by means of a drive plate attached to this via an axially intermediate damping disk in rotary driving connection with a gear driven by a worm shaft. Further, it is axially supported directly or indirectly via the damping disk and the gear against the gear housing.

The from the EP 0 261 525 B1 known gear assembly is particularly suitable for automatic assembly, with a high operability and operating life of the gear assembly, in particular taking into account the given when used for window chopping large operational temperature differences, can be guaranteed.

The problem with gear arrangements for operating a window or the like is the space required to accommodate the components provided for this purpose. Since the available installation space is usually limited and already specified by other requirements, deflections of the actuation directions may be required. In addition, the use of correspondingly resilient components, in particular a metallic gear, may be required to transmit the required high forces and to ensure this transmission over the service life.

Disclosure of the invention

The drive according to the invention with the features of claim 1 and the drive according to the invention with the features of claim 11 have the advantage that an improved design is made possible. Specifically, an efficiency can be improved, deflections can be saved and / or the noise behavior can be improved.

The measures listed in the dependent claims advantageous developments of the drive specified in claim 1 and driven in claim 11 drive are possible.

It is advantageous that at least one gear rim is formed with the teeth of the gear at least substantially of a plastic. As a result, an at least partial embodiment of the gear made of plastic is possible, whereby the manufacturing costs are reduced. It is also advantageous that the gear with the teeth is at least substantially formed of a plastic. Here, the gear may be at least largely formed of plastic, so that it is possible to further reduce the manufacturing cost.

It is also advantageous that a two-stage motor is provided for driving the gear and that the gear has a correspondingly large number of teeth. In particular, the gear may have about 76 teeth. Due to the large gear with the large number of teeth can be caused in a revolution of the gear a long way of climbing spiral. Thus, a gear ratio can be provided.

It is also advantageous that the riser runs between the gear and the adjustable element in a tube and that the riser is radially supported by the tube. As a result, the riser can be guided in the pipe advantageous. Here, on the one hand deflections in different directions are possible. On the other hand, the riser can be loaded by the radial support in an advantageous manner to pressure. Moreover, it is advantageous that a free end of the riser is guided in a free pipe. As a result, the possibly very limited space can be used advantageously. In particular, the riser can be performed in a curved free pipe, the bends of the free pipe take into account the limited space.

Moreover, it is advantageous that an engagement angle between the gear and the ascending helix, via which the teeth of the gear mesh with the ascending helix, is not less than 45 °. As a result, a larger number of teeth engages in the riser, so that there is a sufficient coverage and thus a lower load of the individual tooth, especially in a plastic gear.

It is also advantageous that the pressure angle between the gear and the ascending helix, via which the teeth of the gear engage in the ascending helix, is not greater than 270 °. Preferably, such a pressure angle is about 90 °, about 180 ° or about 270 °.

It is also advantageous that a further toothed wheel and a further climbing helix are provided, that the further helix is at least indirectly connected to the adjustable element and that several teeth of the further toothed wheel engage in the further helix. Here, it is also advantageous that the gear and the further gear are arranged on an axis and are drivable in the same direction about the axis and that the riser and the further rising spiral in the same direction with the first gear or the other gear are engaged. As a result, the actuation of the element via the two risers can be done. Depending on the application, thereby the power transmission, for example, for adjusting a sunroof, can be improved. However, it is also possible that an arrangement is provided in which the gear is driven by a motor and in which the further gear is driven by another motor. As a result, actuation of the element of the motor vehicle can take place via two motors, which if appropriate can be dimensioned correspondingly smaller. This can be favorable in terms of the intended installation conditions.

The further gear can be configured as a wider and / or higher further gear than the gear or vice versa.

In addition, it is advantageous that the motor acts on the element by means of a loadable on train and pressure riser and that the further motor acts on the element by means of another loadable on train and pressure riser. Here, the risers are configured in an advantageous manner as resilient risers. Moreover, it is advantageous that the risers are configured with three juxtaposed and helically wound wires. The ascending helix is in this case designed similarly to a multi-pitch thread, wherein the three wires corresponding to three threads of a thread the triple speed compared to a correspondingly wound climbing helix with only one wire can be achieved. The leadership of the climbing spiral takes place here outside. Inside, the riser is preferably hollow, wherein an elongated, flexible cleaning element or the like may be provided within the risers. In the output, that is on the gear, a corresponding counter-geometry is designed for the riser.

Advantageously, the drive for flaps, a sunroof, a roller blind, a window or a seat of a motor vehicle can be used. In particular, the drive is suitable for roofs or roller blinds of sunroof systems, wherein the riser serves as a flexible coil. In this case, the pinion engagement in the riser can be realized in an advantageous manner, wherein the fixed installation space for the drive can be done by deflections of the rising spiral over corners by means of radii in the actual direction of movement. In this case, the efficiency can be improved, where necessary, necessary deflections can be reduced. Furthermore, the noise behavior can be improved. Especially in the case of an embodiment with two riser coils, a guided, standing shaft, in particular a climbing spiral, with a corresponding profile can be attached to each side of a sunroof, a cover, a disk, a seat frame or another element. This shaft can then be moved in an advantageous manner, in particular within a serving for guiding tube.

For movement, a separate profile wheel with a housing and a lid for guiding and transporting the shaft can be used. Also possible is the integration of the profile wheel in a gear drive, which is preferably designed in two stages. This results in noisy advantages, a variable design for the profile and the adjustment speeds and the adjustment forces. In addition, simple changes of the wrap angle between the riser and the profile wheel are possible. As a result, this simple form is very varied, so that there is a wide range of applications.

It is also possible to use a simple multi-speed worm gear drive, in the worm wheel for the drive, the counter profile of the multi-speed shaft is introduced. Since the output profile of the drive is designed as a hollow shaft, the same drive can be used for both sides. By means of a suitable sensor system in the drives, the two drives can be easily synchronized and operated via control electronics. This results in particular advantages in terms of noise, flexibility and cost.

Thus, there is a particular suitability for an element that is designed as a sunroof. But there are also other applications possible, for example, for flap adjustment in a cargo floor of the motor vehicle.

Brief description of the drawings

Preferred embodiments of the invention are explained in more detail in the following description with reference to the accompanying drawings, in which corresponding elements are provided with corresponding reference numerals. It shows:

1 a drive with two motors for adjusting an element of a motor vehicle in one schematic representation according to a first embodiment of the invention;

2 a riser for a drive for adjusting an element of a motor vehicle in an excerpt, schematic representation according to a possible embodiment of the invention;

3 a drive for adjusting an element of a motor vehicle in a schematic representation according to a second embodiment of the invention;

4 the in 3 with IV designated section of the drive for adjusting an element of a motor vehicle in a schematic representation according to the second embodiment of the invention;

5 a schematic representation of the engagement of a gear in a riser of a drive for adjusting an element of a motor vehicle according to a possible embodiment of the invention and

6 a schematic representation of the engagement of a gear in a riser of a drive according to a possible embodiment of the invention.

Embodiments of the invention

1 shows a drive 1 for adjusting an element 2 of a motor vehicle. Specifically, it may be at the element 2 to act a sunroof a motor vehicle. The element 2 can also be configured as a roller blind, window, seat element or the like.

Here is the drive 1 the particular advantage that with respect to a fixed, limited space an arrangement of the drive 1 is possible and optionally an adjustment of the arrangement of the components of the drive 1 in this limited space is possible.

The drive 1 has engines 3 . 4 on. Furthermore, the drive has 1 waves 5 . 6 on. The waves 5 . 6 are preferably as risers 5 . 6 designed. One possible embodiment, the climbing spirals 5 . 6 is based on the 2 described in more detail.

The motors 3 . 4 act via gears 7 . 8th on the waves 5 . 6 one. The gear 7 can do this together with the engine 3 in a common housing 9 be housed. Furthermore, the engine can also 4 together with the gearbox 8th in a common housing 10 be housed. The housing 9 . 10 can be arranged at different locations on the motor vehicle. Specifically, those in the housings 9 . 10 provided gear 7 . 8th with the engines 3 . 4 be arranged so that the waves 5 . 6 at least substantially rectilinearly oriented. This allows the actuation of the element 2 be improved. Specifically, a noise is reduced. In addition, the waves must 5 . 6 thus not be performed around corners or curves, which in the embodiment of the waves 5 . 6 as flexible risers 5 . 6 but it is possible.

The waves 5 . 6 have ends 11 . 12 on. Depending on the design of the waves 5 . 6 In particular, in a flexible embodiment, the ends can 11 . 12 in free pipes 13 . 14 ( 4 ). The free tube 13 . 14 This can optionally be designed bent, so that an adaptation to limited installation spaces is possible when flexible shafts 5 . 6 be used. The waves 5 . 6 However, they can also be configured as rigid spindles. If such rigid spindles are provided, then, for example, by an embodiment of the transmission 7 . 8th as worm gear via suitable worm wheels an operation, the waves 5 . 6 respectively.

2 shows the climbing spiral 5 for a drive 1 for adjusting an element 2 a motor vehicle in an excerpt, schematic representation according to a possible embodiment. Here is a short section of the climbing spiral 5 shown. The climbing spiral 5 has wires 15 . 16 . 17 on, which are arranged side by side and helically wound. This results in a sense a spiral configuration of each wire 15 . 16 , where the interior of the climbing spiral 5 remains free. The wires 15 . 16 . 17 are here in a spiral around a longitudinal axis 18 the climbing spiral 5 wound. A space around the longitudinal axis 18 in which the wires 15 . 16 . 17 are not provided, this can be left free. This is the climbing spiral 5 hollow inside. It is also possible that in the room 19 an elongated cleaning element is arranged, for example, via bristles, the spaces between the wires 15 . 16 . 17 cleans over the life.

3 shows a drive 1 for adjusting an element 2 of a motor vehicle in a schematic representation according to a second embodiment of the invention. In this embodiment, the waves 5 . 6 as flexible risers 5 . 6 designed. For example, the risers 5 . 6 according to the 2 be configured described configuration. The climbing spirals 5 . 6 are at attachment points 25 . 26 on long sides 27 . 28 of the element 2 are provided with the element 2 connected. Here are the climbing spirals 5 . 6 in pipes 29 . 30 ( 4 ), so that they can be loaded on train and pressure. This allows the element 2 in and against one direction 31 be operated. For example, the direction 31 the opening direction of a sliding roof 2 be.

The motor 3 acts via a gearbox 7 on gears 32 . 33 one. The gears 32 . 33 are here on an axis 34 arranged. The climbing spirals 5 . 6 are in the same direction around the gears 32 . 33 guided, so that according to the direction of rotation of the axis 34 the climbing spirals 5 . 6 the element 2 together in the direction 31 or against the direction 31 actuate.

4 shows the in 3 with IV designated section of the drive 1 according to the second embodiment of the invention. Here is the gear 33 over the gear 32 arranged. Accordingly, the climbing spiral runs 6 in the presentation of the 4 over the Steigwendel 5 around the axis 34 , Here the climbing spirals run 5 . 6 in the same direction around the gears 32 . 33 , The ends 11 . 12 the climbing spirals 5 . 6 are in the free pipes 13 . 14 guided. The free tube 13 . 14 can be suitably bent to take account of the limited installation conditions.

Like in the 3 shown are the pipes 29 . 30 around corners 35 . 36 guided. Here is a suitable bending radius of the pipes 29 . 30 selected.

Thus, in this embodiment advantageously with a motor 3 an actuation of the two climbing spirals 5 . 6 respectively. The power transmission to the element 2 is about the advantageous connection of the risers 5 . 6 at the attachment points 25 . 26 guaranteed.

5 shows a schematic representation of the engagement of the gear 32 in the climbing spiral 5 a drive 1 according to a possible embodiment of the invention. Here is the climbing spiral 5 over a pressure angle 40 around the axis 34 on the gear 32 is arranged, guided. Here are a footer 41 and a head circle 42 of the gear 32 illustrated. The gear 32 engages over several, schematically illustrated teeth 43 . 44 . 45 in the climbing spiral 5 one. Here are only three digits to simplify the presentation 43 . 44 . 45 shown at which the teeth of the gear 32 in the climbing spiral 5 intervention.

Thus, the gear can 32 over several teeth 43 to 45 in the climbing spiral 5 engage, reducing the load on the gear 32 , in particular on the sprocket 41 . 42 , is reduced. Thus, the gear can 32 be formed partially or entirely of plastic. Specifically, a sprocket 41 . 42 of the gear 32 be formed of plastic.

In this embodiment, the pressure angle 40 specified with a size of 270 °. The pressure angle 40 is preferably 90 °, 180 ° or 270 °. This is the pressure angle 40 preferably in a range of about 45 ° to about 270 °. The total number of teeth 43 to 45 of the gear 32 can be about 76 be. Of this accesses in this embodiment, a large proportion, namely ¾ of the teeth 43 to 45 in the climbing spiral 5 one.

6 shows a schematic representation of the engagement of the gear 32 in the climbing spiral 5 of the drive 1 according to a possible embodiment of the invention. Here is a section 50 a riser guide provided which the pipe 29 with the free pipe 13 combines. This is a riser guide 15 designed the pipe 29 , the section 50 and the free pipe 11 includes. Through the section 50 is the climbing spiral 5 also in the area of the gear 32 guided. The pressure angle 40 is given in this embodiment with a size of 90 °.

The invention is not limited to the described embodiments.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• EP 0261525 B1 [0002, 0003]

Claims (13)

Drive ( 1 ) for adjusting an adjustable element ( 2 ) of a motor vehicle with at least one toothed wheel ( 32 ) and a climbing spiral ( 5 ), whereby the climbing spiral ( 5 ) at least indirectly with the adjustable element ( 2 ) and wherein several teeth ( 43 . 44 . 45 ) of the gear ( 32 ) in the climbing spiral ( 5 ) intervene. Drive according to claim 1, characterized in that at least one gear rim ( 41 . 42 ) with the teeth ( 43 . 44 . 45 ) of the gear ( 32 ) is formed at least substantially of a plastic. Drive according to claim 1 or 2, characterized in that the gear ( 32 ) with the teeth ( 43 . 44 . 45 ) is formed at least substantially of a plastic. Drive according to one of claims 1 to 3, characterized in that a two-stage motor ( 3 ) for driving the gear ( 32 ) is provided and that the gear ( 32 ) a correspondingly large number of teeth ( 43 . 44 . 45 ), in particular about 76 teeth. Drive according to one of claims 1 to 4, characterized in that the riser ( 5 ) between the gear ( 32 ) and the adjustable element ( 2 ) in a pipe ( 29 ) and that the climbing spiral ( 5 ) through the pipe ( 29 ) is radially supported. Drive according to one of claims 1 to 5, characterized in that a pressure angle ( 40 ) between the gear ( 32 ) and the climbing spiral ( 5 ) over which the teeth ( 43 . 44 . 45 ) of the gear ( 32 ) in the climbing spiral ( 5 ), not less than 45 °. Drive according to one of claims 1 to 6, characterized in that a pressure angle ( 40 ) between the gear ( 32 ) and the climbing spiral ( 5 ) over which the teeth ( 43 . 44 . 45 ) of the gear ( 32 ) in the climbing spiral ( 5 ), does not exceed 270 °. Drive according to one of claims 1 to 7, characterized in that a further gear ( 33 ) and another climbing spiral ( 6 ) are provided that the further climbing spiral ( 6 ) at least indirectly with the adjustable element ( 2 ) and that several teeth of the further gear ( 33 ) in the further climbing spiral ( 6 ) intervene. Drive according to claim 8, characterized in that the gear ( 32 ) and the further gear ( 33 ) on one axis ( 34 ) are arranged and in the same direction about the axis ( 34 ) are drivable and that the riser ( 5 ) and the further climbing spiral ( 6 ) in the same direction with the gear ( 32 ) or the further gear ( 33 ) are engaged. Drive according to claim 8, characterized in that the gear ( 32 ) from a motor ( 3 ) is drivable and that the further gear ( 33 ) from another engine ( 4 ) is drivable. Drive ( 1 ) for adjusting at least one element ( 2 ) of a motor vehicle with a motor ( 3 ) and another motor ( 4 ), the engine ( 3 ) and the other engine ( 4 ) together for adjusting the element ( 2 ) at least indirectly on the element ( 2 ). Drive according to claim 11, characterized in that the engine ( 3 ) by means of a climbing spiral loadable on train and pressure ( 5 ) on the element ( 2 ) and that the further engine ( 4 ) by means of a further load-carrying on Zug and pressure riser ( 6 ) on the element ( 2 ) acts. Drive according to one of claims 1 to 10 or 12, characterized in that the riser ( 5 ) with several, in particular three, juxtaposed and helically wound wires ( 15 . 16 . 17 ) is configured.

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