EP4652389A1 - Elektromotorische antriebseinheit für kraftfahrzeug-technische anwendungen - Google Patents
Elektromotorische antriebseinheit für kraftfahrzeug-technische anwendungenInfo
- Publication number
- EP4652389A1 EP4652389A1 EP23813277.3A EP23813277A EP4652389A1 EP 4652389 A1 EP4652389 A1 EP 4652389A1 EP 23813277 A EP23813277 A EP 23813277A EP 4652389 A1 EP4652389 A1 EP 4652389A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- ring gear
- drive unit
- contour
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/06—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes
- F16H1/10—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes one of the members being internally toothed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/12—Arrangements for adjusting or for taking-up backlash not provided for elsewhere
Definitions
- the invention relates to an electromotive drive unit for automotive applications, in particular a closing aid actuator, with an electric motor, a transmission downstream of the electric motor and an actuating element following the transmission, wherein the transmission has at least one spur gear stage with a ring gear and a gear engaging in the ring gear and rotating about an axis.
- Electric motor drive units for automotive applications are generally characterized by low-voltage direct current operation. For this reason, it is usually necessary to reduce the rotary movements of the electric motor using the downstream gearbox. This means that small and inexpensive electric motors can also be used for energy-consuming adjustment movements. These adjustment movements are observed on the adjustment element following the gearbox.
- This adjustment element can be a mechanical intermediate element that converts the rotary adjustment movements of the gearbox into, for example, a swivel movement or linear adjustment.
- electromotive drive units are used in a wide variety of ways in the automotive sector and in increasing numbers. Examples of corresponding areas of use are mirror adjustments, seat adjustments, window lifters, charging socket locks, etc.
- an electromotive drive unit can be used in particular as a closing aid actuator.
- the drive unit in question then works, for example, on a locking element which engages in a rotary latch and ensures that the The rotary latch is acted upon in a tightening direction.
- WO 2004/040089 A1 concerns the actuation of a pawl using such an electromotive drive unit. This allows the pawl to be actuated and in particular to be released from its engagement with the rotary latch. This generally causes the locking mechanism to go into its open state.
- a normal voltage motor for electromechanically actuating an actuating mechanism and at least one low voltage motor are provided.
- the drive train for electromechanical actuation implemented here is equipped with a gear that has two gear ratios.
- the gear can be designed as a spur gear.
- EP 1 074 681 A1 proceeds in such a way that the motor vehicle door lock described there is equipped with an electric drive motor which, in normal operation, only works in one direction of rotation and with a low reduction ratio via a normal actuating element on a pawl.
- the electric drive motor works with a significantly higher reduction ratio via an emergency actuating element on the pawl in question.
- the reduction gear is designed in detail as a planetary gear.
- the planetary gear has a ring gear into which individual planetary gears engage, which in turn act on an additional sun gear.
- the individual planetary gears are mechanically connected to one another via a planetary gear carrier. This leads to a bulky and complicated structure.
- the invention aims to remedy this.
- the invention is based on the technical problem of further developing such an electromotive drive unit for automotive applications and in particular a closing aid actuator in such a way that the greatest possible torque can be transmitted in a small installation space.
- a generic electric motor drive unit for automotive applications is characterized according to the invention in that the axis of the gear engaging in the ring gear is mounted on a contour of the ring gear.
- the axis of the ring gear is preferably mounted both axially and radially with the help of the contour.
- At least one gear stage or spur gear of the transmission is initially equipped with the ring gear and the gear that engages with it.
- the gear stage in question is usually the last gear stage of the transmission, i.e. the one that works on the output side of the transmission on the actuating element that is acted upon by it.
- the observed torque is the greatest at this last gear stage.
- the gear stage in question is designed according to the invention in such a way that a gear engages in the ring gear and both the ring gear and the gear engaging in the ring gear rotate about an axis
- the ring gear and the gear can be arranged with a small axial distance from each other.
- the axial distance of the two axes running parallel to each other, on the one hand of the ring gear and on the other hand of the gear engaging in the ring gear is smaller than the axial distance which is observed when the gear in question does not engage in the ring gear, but rather meshes with an external toothing of the ring gear.
- the ring gear is usually directly or indirectly connected to the Actuating element.
- the actuating element can be designed as an attachment that can be connected to the ring gear or is connected to it and that corresponds in size to the ring gear.
- a flexible connecting element such as a cable, can then be connected to the corresponding attachment.
- the cable can be used to tighten a locking mechanism of a motor vehicle lock that is remote from it. To do this, the cable can be mechanically coupled from the attachment directly to a rotary latch or indirectly to the rotary latch via intermediate elements in order to apply a tightening force to the rotary latch in the pre-locking position of the locking mechanism.
- the ring gear and the pot- or lid-like attachment are usually coupled together in a rotationally fixed manner, while the gear engaging the ring gear performs a rotational movement along the internal teeth in the ring gear, it is generally necessary to support the axis of the gear engaging the ring gear, which is free in the direction of the attachment. According to the invention, this is ensured by the contour of the ring gear, on which the axis of the gear engaging the ring gear is mounted.
- the additional guide ensures that the axis of the driving gear engaging the ring gear is usually guided and held perfectly on both sides, both radially and axially.
- the previously mentioned contour of the ring gear ensures the guidance of the free end of the axle or a guide pin provided at this point.
- the opposite end of the axle or the guide pin of the gear is generally connected to another Gearwheel connected or the guide pin for both gearwheels can be supported, for example, against a housing that accommodates the electric motor drive unit.
- the housing may be of modular construction so that the electric motor drive unit can be arranged and placed in accordance with the invention at practically any location, for example inside a motor vehicle door.
- the actuating movements provided by the electric motor drive unit are transmitted via the attachment rotating together with the ring gear to the cable pull and in particular the Bowden cable that is detachably connected to the attachment.
- the desired elements in or on the vehicle can then be moved using the cable pull or Bowden cable.
- This can be, but is not limited to, the rotary latch of a locking mechanism in order to implement a closing aid actuator in this way.
- any other actuating movement can also be implemented using the electromotive drive unit according to the invention, for example the mirror adjustment mentioned above, a seat adjustment, a window movement, etc.
- the contour of the ring gear is generally ring-shaped for supporting the free axis of the gear in particular.
- the design is usually such that the contour in question and the ring gear are arranged concentrically to a common axis.
- the pot-shaped attachment is also generally arranged concentrically to this common axis and is connected to the ring gear in a rotationally fixed manner.
- the design is advantageously such that the contour is arranged at a distance from the ring gear of the ring gear inside the ring gear.
- the gear engaging in the ring gear with the guide pin defining the axis ensures that the guide pin in question slides along the contour of the ring gear in a rotating manner.
- the design is also such that the guide pin overlaps the gear on the head side.
- the guide pin which is typically arranged in the center of a gear ring of the gear, can overlap the gear ring of the gear engaging in the ring gear.
- the design is particularly advantageously such that the contour at least partially overlaps the gear ring in question.
- the guide pin defining the axis of the gear engaging in the ring gear projects over the gear rim of the gear with its head end.
- This allows the head end of the guide pin to interact with the contour of the ring gear and, in particular, to slide along the contour in question in a rotating manner when the gear engaging in the ring gear rotates.
- the design is advantageously such that the contour at least partially overlaps and can overlap the gear rim of the gear engaging in the ring gear due to the projecting nature of the free end of the guide pin.
- This provides additional axial securing for the guide pin and with it the gear engaging in the ring gear. This is because the gear rim of the gear moves as it rotates along the internal teeth of the ring gear “under” the contour along the ring gear that at least partially overlaps the gear rim.
- a cost-effective and weight-optimized design is characterized by the fact that the contour and the ring gear are made of the same material. The same can apply to the pot-shaped attachment. Overall, a one-piece design of the attachment including the ring gear and contour made of plastic has proven to be particularly favorable.
- the gear that engages the ring gear and the other gears of the transmission downstream of the electric motor can also be made of plastic.
- the individual spur gears of the intermeshing gears of the transmission may mesh with one another via spur gearing or helical gearing. Combinations are also conceivable. In most cases, the design is such that a total of two spur gear stages are provided for the transmission.
- the second gear stage that follows it has spur gearing.
- This following gear stage is the end or last gear stage of the transmission, which is equipped with the ring gear and the driving gear that meshes with it.
- an electric motor drive unit for automotive applications and in particular a closing aid actuator is provided, which has a compact and at the same time cost-effective design, but also provides a large torque on the output side, with the help of which even the forces required for a closing function are provided.
- This can ultimately be explained by the combination of the ring gear with the driving gear engaging therein in connection with the last gear stage, whereby the contour of the ring gear ensures that the axis of the gear is mounted on the relevant contour of the ring gear. This applies in particular to a free end of the axis of the gear or the part of the guide pin that overlaps the gear rim of the gear on the head side.
- Fig. 1 the electromotive drive unit according to the invention in a perspective overview with partially opened housing
- Fig. 2 shows the object according to Fig. 1 in the area of the electric motor including gear box and
- Fig. 3 shows a detail from Fig. 2 with the ring gear provided according to the invention including the annular contour provided thereon.
- the figures show an electric motor drive unit for automotive applications.
- a motor vehicle lock 1 which is only indicated here and is arranged away from the electric motor drive unit, can be actuated.
- the motor vehicle lock 1 is equipped with a locking mechanism (not shown) inside, which can be closed using the electric motor drive unit according to Fig. 1.
- the locking mechanism is first transferred to a pre-locking position and then closed using the electric motor drive unit shown.
- the drive unit in question works by way of example and not limited to a rotary latch as a component of the locking mechanism inside the motor vehicle lock 1. This is described in detail in DE 10 2013 108 156 A1, which can be cited as a reference.
- the electromotive drive unit according to Fig. 1 is equipped with an enclosing housing 2, which has or can have a lower housing shell shown here and an upper housing shell that closes the lower housing shell.
- the drive unit can be installed in a modular manner and at practically any location, for example inside a motor vehicle door.
- the mechanical coupling between the drive unit and the motor vehicle lock 1 is provided by a cable 3, which is or can be designed as a Bowden cable. With the help of the cable 3, linear adjustment movements can be transmitted to the motor vehicle lock 1, with the help of which the rotary latch of the locking mechanism is transferred from a pre-locking position to a main locking position, comparable to the previously mentioned prior art according to DE 10 2013 108 156 A1.
- the drive unit is equipped with an adjusting element 4, which according to the exemplary embodiment and not restrictively is an attachment 4.
- Fig. 1 shows that the cable pull 3 has one end of its cable inserted into a recess in the adjusting element 4 or attachment 4.
- rotary movements of the attachment 4 indicated in Fig. 1 in the clockwise direction indicated here result in the cable of the cable pull 3, for example, pulling on the rotary latch inside the motor vehicle lock 1 and moving this from the pre-locking position to the main locking position.
- the drive unit shown in the overview in Fig. 1 is equipped with an electric motor 5.
- a gear 6, 7, 8, 9, 10 is connected downstream of the electric motor 5.
- the electric motor 5 works via a worm 8 arranged on its output shaft on an intermediate gear 9, which is arranged after the Embodiment is designed as a double gear 9 and meshes with a first gear stage 6.
- the first gear stage 6 is in turn designed as a double gear and has a gear 10 engaging in a ring gear 7.
- the gears 6, 7, 9, 10 are all designed as spur gears and consequently the transmission 6, 7, 8, 9, 10 as a spur gear.
- the ring gear 7 provided as part of the final or last or second gear stage 7 is now coupled in a rotationally fixed manner to the previously mentioned attachment 4 as an adjusting element 4.
- rotary movements of the ring gear 7 directly lead to the attachment 4 being acted upon in this way, for example, performing the counterclockwise movement shown in Fig. 1, so that the cable pull 3 is subjected to pulling force as described with the help of the attachment or adjusting element 4.
- the worm 8, the intermediate gear 9 and the first gear stage 6 each have helical gearing.
- This provides a noise-optimized course of the gear 6 to 10.
- the last or second gear stage 7 on the output side is equipped with helical gearing.
- the design in this context is such that the spur gear stage or last gear stage 7 is equipped with the ring gear 7 and the gear 10 that engages the ring gear 7 and rotates about an axis. This already provides a compact structure because the gear 10, for example, does not mesh with the teeth of the ring gear 7 on the outside.
- the ring gear 7 can be arranged and placed in overlap with the first gear stage 6 or the double gear 6 realized at this point.
- the design is such that the axis of the gear 10 is mounted on a contour 11 of the ring gear 7, which has been omitted from the illustration in Fig. 2 for reasons of clarity, but is expressly shown in Fig. 3.
- the ring gear 7 is additionally equipped with the contour 11 in question in an intermediate region between the outer peripheral toothing and a central region 12 defining the axis of the ring gear 7.
- the contour 11 now serves to mount the axis of the gear 10 engaging in the ring gear 7.
- the gear 10 is equipped with a guide pin 13, which can be seen in particular in Fig. 3 and which overlaps a gear ring of the gear 10 on the head side.
- the guide pin 13 not only defines the axis of the gear 10 engaging in the ring gear 7, but also the axis of the gear 6 interacting with the gear 10 and functions as a continuous guide pin 13 for the double gear 6, 10 realized at this point.
- the guide pin 13 in question can be supported on the base side on a housing shell or a corresponding receiving hole in the lower housing shell shown in Fig. 1.
- the upper end of the guide pin 13 and thus also the axis of the gear 10 engaging in the ring gear 7 is free.
- the contour 11 is provided on the ring gear 7.
- the contour 11 ensures axial and radial bearing of the guide pin 13 and thus the axis of the gear 10.
- the contour 11 is ring-shaped.
- the contour 11, like the ring gear 7, is arranged concentrically to the common axis, which runs centrally through the central element or the central region 12 of the ring gear 7.
- the contour 11 in question is arranged at a distance from the ring gear of the ring gear 7 inside the ring gear 7.
- the gear 10 engaging in the ring gear 7 is now guided by the guide pin 13, which slides along the contour 11 in question in a rotating manner. This results in a radial bearing of the guide pin 13.
- the design is also such that the guide pin 13 overlaps the gear 10 in question or a gear ring implemented at this point on the head side.
- the guide pin 13 is arranged in the center of the previously described gear ring of the gear 10. This additionally axially supports the gear 10 in question.
- a look at Fig. 3 makes it clear that the contour 11 of the ring gear 7 at least partially overlaps the gear rim of the gear 10. This can be attributed to the fact that the guide pin 13 not only overlaps the gear rim on the head side, but is also equipped with a diameter compared to which the individual teeth of the gear rim of the gear 10. As a result, the contour 11 can overlap at least two teeth of the respective gear ring of the gear 10 engaging in the ring gear 7. In this way, the respective gear 10 is additionally secured axially.
- contour 11 of the ring gear 7 not only ensures that the gear 10 engaging in the ring gear 7 is guided or radially supported along the contour 11, but also that the guide pin 13 or the gear 10 in question is secured axially between, on the one hand, a bearing point (not shown) in the lower housing shell of the housing 2 and, on the other hand, by the contact of individual teeth on the underside of the contour 11 in the relevant axial direction.
- the contour 11 and the ring gear 7 are usually made of the same material, for example from plastic.
- the housing 2 can house the electromotive drive unit shown in a media-tight manner if necessary, which can be achieved by a seal (not shown) inserted into a groove 14 of the lower housing shell of the housing 2 shown in Fig. 1.
- the entire electromotive drive unit can also be housed as a modular closing aid actuator, for example in the so-called wet room inside a motor vehicle door.
- the cable 3 is introduced into the housing 2 in question via a sealing grommet 15 in order to ensure the media-tight design.
- this modular character is paired with a high reduction ratio, a compact design and a particularly cost-effective embodiment, which overall and in summary are the essential advantages. List of reference symbols
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
- Lock And Its Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023100950.8A DE102023100950A1 (de) | 2023-01-17 | 2023-01-17 | Elektromotorische Antriebseinheit für kraftfahrzeug-technische Anwendungen |
| PCT/DE2023/100872 WO2024153277A1 (de) | 2023-01-17 | 2023-11-14 | Elektromotorische antriebseinheit für kraftfahrzeug-technische anwendungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4652389A1 true EP4652389A1 (de) | 2025-11-26 |
Family
ID=88969784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23813277.3A Pending EP4652389A1 (de) | 2023-01-17 | 2023-11-14 | Elektromotorische antriebseinheit für kraftfahrzeug-technische anwendungen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4652389A1 (de) |
| CN (1) | CN120476267A (de) |
| DE (1) | DE102023100950A1 (de) |
| WO (1) | WO2024153277A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5829320Y2 (ja) * | 1979-12-26 | 1983-06-27 | クラリオン株式会社 | バツクラツシユ防止機能を有する軸可変伝達機構 |
| DE3705135A1 (de) * | 1987-02-18 | 1988-09-08 | Bosch Siemens Hausgeraete | Getriebe, insbesondere fuer eine haushalts-kuechenmaschine |
| DE19935589A1 (de) | 1999-08-02 | 2001-02-15 | Bosch Gmbh Robert | Kraftfahrzeug-Türschloß o. dgl. |
| JP2001327122A (ja) * | 2000-05-17 | 2001-11-22 | Jidosha Denki Kogyo Co Ltd | 減速機構付モータ |
| DE10251382A1 (de) | 2002-11-01 | 2004-05-13 | Siemens Ag | Verfahren zur Betätigung einer Sperrklinke in einem Schloss mit Drehfalle für ein Kraftfahrzeug |
| DE102013108156A1 (de) | 2013-07-30 | 2015-02-05 | BROSE SCHLIEßSYSTEME GMBH & CO. KG | Antriebsanordnung |
| JP6197453B2 (ja) * | 2013-08-05 | 2017-09-20 | 株式会社今仙電機製作所 | ギヤボックスおよびシート装置 |
| DE102020121519A1 (de) | 2020-08-17 | 2022-02-17 | Kiekert Aktiengesellschaft | Elektrisch betreibbare Vorrichtung für ein Kraftfahrzeugzugangssystem |
-
2023
- 2023-01-17 DE DE102023100950.8A patent/DE102023100950A1/de active Pending
- 2023-11-14 WO PCT/DE2023/100872 patent/WO2024153277A1/de not_active Ceased
- 2023-11-14 CN CN202380091384.XA patent/CN120476267A/zh active Pending
- 2023-11-14 EP EP23813277.3A patent/EP4652389A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024153277A1 (de) | 2024-07-25 |
| CN120476267A (zh) | 2025-08-12 |
| DE102023100950A1 (de) | 2024-07-18 |
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