EP4558743A1 - Antriebseinheit für kraftfahrzeugtechnische anwendungen - Google Patents
Antriebseinheit für kraftfahrzeugtechnische anwendungenInfo
- Publication number
- EP4558743A1 EP4558743A1 EP23764226.9A EP23764226A EP4558743A1 EP 4558743 A1 EP4558743 A1 EP 4558743A1 EP 23764226 A EP23764226 A EP 23764226A EP 4558743 A1 EP4558743 A1 EP 4558743A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive wheel
- unit according
- electric motor
- contour
- gear
- 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
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/02—Power-actuated vehicle locks characterised by the type of actuators used
- E05B81/04—Electrical
- E05B81/06—Electrical using rotary motors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
- E05B81/14—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
- E05B81/26—Output elements
- E05B81/30—Rotary elements
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
- E05B81/32—Details of the actuator transmission
- E05B81/34—Details of the actuator transmission of geared transmissions
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
- E05B81/32—Details of the actuator transmission
- E05B81/34—Details of the actuator transmission of geared transmissions
- E05B81/36—Geared sectors, e.g. fan-shaped gears
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B81/00—Power-actuated vehicle locks
- E05B81/24—Power-actuated vehicle locks characterised by constructional features of the actuator or the power transmission
- E05B81/32—Details of the actuator transmission
- E05B81/42—Cams
-
- 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
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/125—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising spiral gears only
-
- 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
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
- F16H2055/065—Moulded gears, e.g. inserts therefor
Definitions
- the invention relates to a drive unit for automotive technical applications, with an electric motor drive with an electric motor and drive wheel, and with an actuating element acted upon by the drive wheel, a crown gear gear stage being implemented between a pinion on an output shaft of the electric motor and the drive wheel.
- Drive units for automotive applications are typically operated with low-voltage direct voltage of, for example, 12 V, 24 V or even 48 V.
- Common areas of application for such drive units are that they can be used to move and operate mirrors, window panes, but also door leaves, tailgates, etc. They can also be used to adjust seats, adjust headlights or lock flaps for electrical connection devices.
- drive units are used particularly advantageously in connection with motor vehicle locks.
- the drive unit in question is actually located inside a housing or lock housing.
- different functions can be controlled, such as “locked/unlocked”, “theft-proof/theft-unlocked” and “child-locked/child-locked”.
- drive units are advantageously used for so-called “electric opening”. In this case, it works from the drive wheel
- the actuating element acts directly or indirectly on a pawl when the locking mechanism is closed and ensures that the pawl is lifted from its locking engagement with the rotary latch. As a result of this, the locking mechanism and therefore the motor vehicle lock go into its open state.
- Such drive units often work with a high transmission ratio or reduction ratio in order to be able to transmit large forces, for example in connection with a window regulator.
- a compact design is generally required because the installation conditions are typically cramped.
- the generic prior art according to DE 10 2020 102 362 A1 already proposes a drive unit for automotive applications in which the drive train has at least one crown gear stage.
- the pinion on the output shaft of the electric motor and the drive wheel are arranged at an angle and in particular at right angles to one another, so that the crown wheel gear stage is realized in this way.
- a comparable drive unit for automotive technical applications is pursued in DE 10 2017 211 803 A1.
- This is an angular gear designed as a crown gear.
- the driven gear can be designed as a plastic injection molded part in order to achieve particularly simple and cost-effective production in addition to high efficiency.
- the invention is based on the technical problem of further developing such a drive unit for automotive applications in such a way that the highest possible gear ratio or reduction ratio can be achieved, taking into account a compact and cost-effective structure.
- the invention proposes, based on a generic drive unit in the context of a first variant of the invention, that the drive wheel has a turning contour for acting on the Has actuating element.
- a gear wheel contour is provided instead of the turning contour for acting on the position element.
- the turning contour and the gear contour can also be combined with each other.
- the turning contour is advantageously found on a surface of the drive wheel opposite a crown toothing.
- the gear contour is usually arranged on the surface of the drive wheel equipped with the crown teeth.
- the drive wheel is, first of all, and according to the invention, equipped on one surface with the crown toothing, into which the pinion on the output shaft of the electric motor engages.
- the turning contour or gear wheel contour is provided on the opposite surface or on the same surface of the usually disk-shaped or circular disk-shaped drive wheel.
- the turning contour is a helical spiral surface which is wound around an axis or axis of rotation of the drive wheel and extends from a low point as the starting point of the turning contour to a high point of the turning contour.
- the gear contour is usually placed centrally in comparison to the drive wheel, which means that both axes of rotation coincide. This ultimately also applies in the case of the turning contour, in which the helix axis coincides with the axis or axis of rotation of the drive wheel.
- the actuating element is generally a pivot lever that is rotatably mounted about an axis.
- the axis is usually defined by a bearing mandrel for the pivot lever that stands largely vertically on a housing cover.
- the design can be such that the axis of the drive wheel and the axis of the pivot lever are largely arranged perpendicular to one another.
- Such an embodiment is usually implemented in connection with the turning contour.
- a gear wheel contour is provided, which typically interacts with an associated gear wheel contour on the pivoting lever or actuating element, the alternative procedure is such that the axis of the drive wheel and the axis of the pivoting lever or actuating element run largely parallel to one another.
- a further embodiment can be carried out in such a way that the pivoting lever rests on the turning contour with a stop on the head side.
- the procedure is also such that the turning contour at least partially overlaps the pivoting lever in an undeflected end position.
- This undeflected end position of the swivel lever corresponds to the fact that the head-side stop of the swivel lever rests at the low point of the turning contour. Since in this undeflected end position the turning contour at least partially overlaps the pivoting lever, a stop or end stop is defined in this way. An additional stop in this undeflected end position of the pivot lever is expressly not required, which reduces the effort and increases the compactness of the solution according to the invention.
- the design is advantageously such that the gear contour is provided as a central pinion on the drive wheel.
- This central pinion usually engages with a gear arch on the control element or pivot lever.
- This allows a desired translation to be realized and implemented between, on the one hand, the central pinion and, on the other hand, the gear arch.
- such a gear arch can easily be realized and implemented on the control element or pivot lever, which is usually made of plastic.
- the gear arch is usually equipped with a stop at the end in order to limit a pivoting movement of the adjusting element or pivoting lever if necessary.
- the procedure is usually such that the electric motor with its output shaft and the pinion there describes a predominantly right pressure angle to the drive wheel with the crown teeth.
- both the pinion and the crown teeth can be designed as straight teeth.
- an evoloid gearing can advantageously be implemented in order to provide particularly high transmission ratios.
- the design is advantageously such that the electric motor with its output shaft has a longitudinal extension that forms an acute angle with the axis of the pivoting lever, provided that the variant with the turning contour is considered.
- the design is typically such that the electric motor with its output shaft has a longitudinal extension that is predominantly tangentially oriented in comparison to the gear wheel arch on the actuating element or pivot lever.
- both variants are characterized by the fact that the electric motor with its output shaft and the longitudinal extent determined thereby is oriented towards the axis or the center of the disk-like drive wheel.
- a drive unit for automotive technical applications is provided within the scope of the invention, which has a particularly compact structure and at the same time offers high transmission ratios or reduction ratios.
- the whole thing is combined with cost-effective production. Since the crown gear gear stage allows a certain amount of axial play between the pinion on the output shaft of the electric motor and the drive wheel to act on the actuating element, installation is also made easier and long-term functional reliability is guaranteed. The axial freedom achieved in this way makes the crown gear gear stage insensitive to manufacturing and assembly errors as well as any housing deformations.
- the crown gear gear stage in conjunction with the helical gearing of both the pinion and the crown gearing on the drive wheel, which is usually implemented at this point, ensures the implementation of a high gear ratio to act on the actuating element. This is particularly true when the crown gear gear stage is the only gear stage of the drive unit according to the invention.
- the invention additionally takes advantage of the fact that, in principle, not only a pivoting movement of the adjusting element or pivoting lever can be realized by the turning contour on the drive wheel. Rather, in this context, it is additionally and advantageously conceivable that the turning contour includes a different gradient and consequently a varying angle with the axis of the drive wheel as viewed over its course.
- the turning contour works with a constant gradient, so that with its help the rotary movement of the drive wheel is converted into a rotary movement of the pivot lever about a vertical axis. This promotes the compact structure and at the same time provides the end stop in the undeflected end position of the pivot lever.
- FIG. 1 shows the drive unit according to the invention in connection with a motor vehicle lock for electrically opening a locking mechanism
- Fig. 2 shows the drive unit in a perspective front view and rear view as well
- Fig. 3 shows a variant of the drive unit according to the invention.
- the figures show a drive unit for automotive technical applications.
- the drive unit is used in conjunction with a motor vehicle lock 1 shown there. That is, the motor vehicle lock 1 is with the relevant one Drive unit equipped.
- the motor vehicle lock 1 has a locking device 2, 3 consisting of a rotary latch 2 and a pawl 3, each of which is rotatably mounted on a lock case 1.
- the axis for the pawl 3 is defined by a bearing mandrel 4, which for this purpose stands vertically on the lock case 1 or generally on a housing cover 1.
- a release lever 5 is also mounted on the bearing dome 4 on the same axis as the pawl 3.
- the release lever 5 is a specially designed actuating element 5, which in the context of the illustrations is a pivoting lever 5 that is rotatably mounted around the axis defined by the bearing mandrel 4 and specifically as a release lever 5 in the variant according to FIG is trained.
- the basic structure of the drive unit includes an electric motor drive 6, 7, 8.
- the electric motor drive 6, 7, 8 is in turn equipped with an electric motor 6 and a drive wheel 8.
- a pinion 7 is realized on an output shaft of the electric motor 6.
- a crown gear gear stage is provided between the pinion 7 on the output shaft of the electric motor 6 and the drive wheel 8, which can best be understood using the illustration on the right in FIG. In fact, at this point a helical toothing or evoloid toothing is used on the pinion 7 on the one hand and the drive wheel 8 on the other hand or a crown toothing 8a on the drive wheel 8 on the other.
- the drive wheel 8 is also equipped with a turning contour 9 on its surface opposite the crown toothing 8a in the exemplary embodiment according to FIG.
- the turning contour 9 serves to act on the actuating element 5.
- the actuating element 5 - as already explained - is designed as a pivoting lever or release lever 5.
- a counterclockwise rotational movement of the drive wheel 8 about its axis 10, indicated in FIG. 1 results in the release lever 5 there also completing a counterclockwise pivoting movement about its axis defined by the bearing dome 4.
- the counterclockwise rotation of the release lever 5 results in the locking pawl 3 being coupled to the release lever 5 in a rotationally fixed manner in the example case is also pivoted counterclockwise around the common bearing mandrel 4 and thereby leaves its locking position with the rotary latch 2.
- This allows the rotary latch 2 to swing open with spring support and release a previously caught and not shown locking bolt.
- the associated motor vehicle door and the locking mechanism 2, 3 are consequently opened by an electric motor.
- the pivoting lever 5 rests on the turning contour 9 with a stop 5a on the head side.
- the turning contour 9 has a constant gradient compared to the axis 10 of the drive wheel 8. In principle, an increasing or decreasing gradient can also be used here, depending on which force curve on the output side is desired.
- the crown gear gear stage between the pinion 7 and the drive wheel 8 or the crown toothing 8a there represents the only gear stage, so that a particularly compact structure is observed.
- the design is such that the electric motor s, together with its output shaft and the pinion 7 there, describes a predominantly right pressure angle compared to the drive wheel 8 with the crown toothing 8a.
- the electric motor 6, together with its output shaft and the pinion 7 in question, has a longitudinal extension which forms an acute angle a with the axis of the pivot lever 5 or the bearing mandrel 4 defining the axis.
- This can best be understood using the illustration on the right in Fig. 2.
- the angle a may take values from 10° to 40°.
- the turning contour 9 at least partially overlaps the pivoting lever 5 in an undeflected end position of the pivoting lever 5. This is shown in Fig. 1.
- the end position of the pivoting lever 5 in question corresponds to the fact that the pivoting lever 5 in this case rests with its head-side stop 5a at a low point of the turning contour 9.
- the turning contour 9 overlaps with its high point Pivoting lever 5.
- a stop for the electric motor drive 6, 7, 8 is automatically provided.
- At least the drive wheel 8 and the control element or the pivot lever 5 are each designed as plastic injection-molded parts.
- the pinion 7 on the output shaft of the electric motor 6 can also be designed as a plastic injection-molded part. This not only results in cost-effective production, but also results in an overall low weight. There are also low friction forces.
- the gear contour 11 is specifically designed as a central pinion 11, which is provided on the same side or surface as the crown gear 8a of the drive wheel 8.
- a gear arch 12 meshes with the central pinion 11 on the actuating element or pivoting lever 5. This causes the pivoting lever or the actuating element 5 to make pivoting movements, which are limited if necessary using a stop 13 on the actuating element 5. The pivoting movements of the adjusting element 5 are then transferred to the transmission lever 14 or act on it.
- the electric motor 6 including the pinion 7 is arranged in its longitudinal extent defined here relative to the drive wheel 8 and the crown toothing 8a in such a way that the relevant longitudinal extent is directed towards the center of the drive wheel 8.
- the longitudinal extension in question in the variant according to FIG. 3 is predominantly tangentially oriented compared to the gear arch 12.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
- Gear Transmission (AREA)
- Transmission Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022118120.0A DE102022118120A1 (de) | 2022-07-20 | 2022-07-20 | Antriebseinheit für kraftfahrzeugtechnische Anwendungen Kronenrand als Stellgetriebe im Schloss (Weiterentwicklung) |
| PCT/DE2023/100446 WO2024017429A1 (de) | 2022-03-29 | 2023-06-13 | Antriebseinheit für kraftfahrzeugtechnische anwendungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4558743A1 true EP4558743A1 (de) | 2025-05-28 |
Family
ID=89429720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23764226.9A Pending EP4558743A1 (de) | 2022-07-20 | 2023-06-13 | Antriebseinheit für kraftfahrzeugtechnische anwendungen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20260028859A1 (de) |
| EP (1) | EP4558743A1 (de) |
| JP (1) | JP2025524681A (de) |
| KR (1) | KR20250040034A (de) |
| CN (1) | CN119630902A (de) |
| DE (1) | DE102022118120A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6386599B1 (en) * | 1999-08-12 | 2002-05-14 | John Phillip Chevalier | Latch arrangement for automotive door |
| DE102017211803A1 (de) | 2017-07-11 | 2019-01-17 | Zf Friedrichshafen Ag | Hochübersetzendes Winkelgetriebe |
| DE102019107644A1 (de) * | 2018-04-06 | 2019-10-10 | Schaeffler Technologies AG & Co. KG | E-Achsenaktor mit Lagerung des Ritzels am Gehäuse und elektromotorisch aktuierbares Achsengetriebe |
| CN111511102B (zh) | 2019-01-31 | 2023-12-15 | 奥特斯奥地利科技与系统技术有限公司 | 在通孔中具有符合最小距离设计原则的桥结构的部件承载件 |
| DE102019109488A1 (de) * | 2019-04-10 | 2020-10-15 | Kiekert Aktiengesellschaft | SCHLIEßSYSTEM FÜR EIN KRAFTFAHRZEUG |
| DE102020101362A1 (de) * | 2020-01-21 | 2021-07-22 | Kiekert Aktiengesellschaft | Stellantrieb für kraftfahrzeugtechnische Anwendungen |
| DE102020105637A1 (de) * | 2020-03-03 | 2021-09-09 | Kiekert Aktiengesellschaft | Stellantrieb für kraftfahrzeugtechnische Anwendungen |
-
2022
- 2022-07-20 DE DE102022118120.0A patent/DE102022118120A1/de active Pending
-
2023
- 2023-06-13 KR KR1020257005209A patent/KR20250040034A/ko active Pending
- 2023-06-13 CN CN202380055093.5A patent/CN119630902A/zh active Pending
- 2023-06-13 EP EP23764226.9A patent/EP4558743A1/de active Pending
- 2023-06-13 JP JP2025502536A patent/JP2025524681A/ja active Pending
- 2023-06-13 US US18/994,650 patent/US20260028859A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN119630902A (zh) | 2025-03-14 |
| US20260028859A1 (en) | 2026-01-29 |
| DE102022118120A1 (de) | 2024-01-25 |
| KR20250040034A (ko) | 2025-03-21 |
| JP2025524681A (ja) | 2025-07-30 |
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