WO2024240482A1 - Actionneur électromécanique - Google Patents
Actionneur électromécanique Download PDFInfo
- Publication number
- WO2024240482A1 WO2024240482A1 PCT/EP2024/062486 EP2024062486W WO2024240482A1 WO 2024240482 A1 WO2024240482 A1 WO 2024240482A1 EP 2024062486 W EP2024062486 W EP 2024062486W WO 2024240482 A1 WO2024240482 A1 WO 2024240482A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support element
- actuator
- torque output
- rolling member
- output element
- 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.)
- Ceased
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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/92—Hybrid vehicles
-
- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force
- F16H2063/3066—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force using worm gears
-
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
-
- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3458—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire
- F16H63/3466—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire using electric motors
Definitions
- the invention relates to an electromechanical actuator. More specifically, the invention relates to an actuator for a parking lock system of a vehicle gearbox, in particular a motor vehicle equipped with an automatic gearbox, for example a hybrid vehicle.
- the invention also applies to a parking lock system of a reducer associated with an electric vehicle motor.
- the gearbox or reducer will more generally be called a transmission box. This locking system is better known by its English term “park-lock” or “parking lock”.
- Such an actuator allows the transmission box to be locked in parking by means of a lever engaging with a toothing on the transmission box.
- Actuators of this type are known and are conventionally designed with a gear system of toothed wheel and worm screw for transmitting the rotational movement of an electric motor to a torque output element of the actuator.
- Such an actuator is described in application DE 102019100300 A1.
- This actuator comprises a housing, an electric motor, a gear power transmission system with a worm screw system and a torque output element rotatable between a locking position and an unlocking position. This torque output element is guided in rotation by a support element.
- This prior art actuator has a first drawback in terms of the transmissible torque.
- the torque output element and the support element are made of plastic and the torque output element is guided in rotation by the support element by plastic/plastic contact.
- This design does not allow a high torque to be transmitted.
- One solution would be to use a more powerful electric motor but this implies a greater weight at the risk of degrading the power transmission system by gears.
- the invention proposes an electromechanical actuator comprising a housing, an electric motor, a gear power transmission system, a torque output element rotatable about a Z axis between two extreme positions and a support element.
- the torque output element is guided in rotation by a rolling member and this rolling member is mounted in the support element.
- the two extreme positions are a locking position and an unlocking position.
- the rolling member is distinct from the support element.
- the rolling member is an additional element.
- the housing is made of plastic and the support element is made of metal.
- the housing is made of glass fiber reinforced PA or PBT.
- the support element is made of aluminum alloy.
- the support element is obtained by die casting.
- the support element comprises a barrel and the rolling member is mounted in this barrel.
- the barrel extends along the Z axis.
- the rolling member is crimped into the barrel of the support element.
- the barrel is obtained by machining, which allows better precision for integrating the rolling member.
- the torque output element comprises a toothing which partly covers the barrel axially along the Z axis so that the toothing and the rolling member are in the same plane P.
- This characteristic has the effect of stiffening the toothing of the torque output element.
- the rolling member comprises an inner ring and an outer ring, said outer ring is in axial abutment against a shoulder of the support element and the inner ring is in axial abutment against a shoulder of the torque output element.
- axial abutment is meant a stop along the Z axis.
- the rolling member is for example a ball bearing or roller bearing. Other types of bearing are of course possible.
- the torque output element comprises a metal core on which a toothing, in particular a toothed sector, is overmolded.
- the metal core comprises a coupling means in the form of a male or female imprint.
- a magnetic target is overmolded on the torque output element, said magnetic target faces a sensor mounted on an electronic card fixed on the support element.
- said gear power transmission system comprises a shaft having a worm system and a toothed wheel, said toothed wheel meshes with a motor pinion of the electric motor and the worm system meshes with the torque output element.
- the worm system is rotatable about an X axis.
- the electric motor extends along an X' axis parallel to the X axis.
- the support element carries the electric motor and the gear power transmission system.
- the support element comprises means for locking the electric motor in the housing.
- the support element comprises means for guiding the rotation of the shaft, in particular two bearings.
- the actuator comprises a cover defining with the housing an internal volume in which the support element is located, the support element being fixed to the housing.
- the electric motor and the gear power transmission system are obviously also in the internal volume because they are mounted on the support element.
- Figure 2 shows a perspective view from below of the support element of the actuator according to the invention
- the actuator 1 mainly comprises an electric drive motor (not shown), a gear power transmission system, a support element 20 and a torque output element 10.
- the torque output element 10 is rotatable between two extreme positions and is guided in rotation by a rolling member 30 mounted in the support element 20.
- the support element can also be called an intermediate frame.
- the role of this support element 20 is to support the components of the actuator 1 so that they have a common reference, which facilitates assembly and functional dimensioning.
- This support element 20 is made of metal, in particular of aluminum alloy obtained by die casting. Certain parts of this support element 20 are then machined in order to obtain surfaces requiring precise tolerances.
- the support element 20 comprises in particular a barrel 21 and the rolling member 30 is mounted in this barrel 21.
- the barrel 21 has previously been machined to receive the rolling member 30.
- the mounting of the rolling member 30 and its retention in the barrel 21 will be described in relation to [ Figure 4].
- FIG. 2 provides a better visualization of the gear power transmission system.
- an X, Y, Z reference is illustrated.
- the X direction or axis corresponds to a longitudinal direction.
- the Y direction or axis, transverse is defined as being perpendicular to the direction longitudinal X. More specifically, the longitudinal and transverse directions X and Y can, for example, belong substantially to a substantially horizontal plane.
- the direction or axis Z corresponds to a vertical direction.
- the geared power transmission system reduces the speed and increases the torque of the electric motor and comprises a motor pinion mounted on the output shaft of the electric motor, a gear wheel 4 which meshes with the motor pinion, a shaft 5 with a worm 51 which is connected to the gear wheel 4, a toothed sector 12 which meshes with the worm 51.
- the torque output element 10 is connected to the toothed sector 6.
- the shaft 5 extends along an axis X.
- the support element 20 extends substantially in the XY plane.
- the support element 20 comprises an extension 26 which extends in the YZ plane in which there is an opening 27 capable of receiving the electric motor, in particular its front face.
- the electric motor extends along an axis X’ parallel to the X axis. The electric motor is thus blocked axially along the X axis and transversely along the Y axis.
- the rear face of the electric motor is held by a fixing plate screwed into the support element 20, in particular in the inserts 29.
- the shaft 5 is guided in rotation by two bearings 24, 25 made of the same material as the support element 20.
- the bearing surfaces of the bearings 24, 25 have been machined beforehand.
- the shaft 5 comprises a shoulder 28 serving as an axial stop along the axis X of the shaft 5 against a face of one of the bearings 25.
- the housing 2 and the cover 3 form, once assembled together, an internal volume in which the electric motor, the gear power transmission system, the support element 20, the torque output element 10 and an electronic card 40 are housed.
- the housing 2 and the cover 3 can be assembled together by any type of sealed fastening, for example screwing, gluing or by laser welding, ultrasound.
- the housing 2 and the cover 3 are made of plastic, in particular reinforced with fiberglass.
- the housing 2 also comprises an electrical connector 6 in order to connect the actuator 1 to an electrical source of the vehicle.
- the electronic card 40 is connected both to the electrical connector 6 and to the electric motor via conductive pins.
- the actuator 1 is adapted to be attached to a transmission box of the vehicle.
- the torque output element 10 is made in the form of a shaft, one end of which has the shape of a star-shaped female socket in which an actuating rod (not shown) of a locking system is capable of engaging so as to lock or unlock a toothing of the transmission box (not shown) via an actuating lever or latch (not shown).
- the torque output element 10 can be made in the form of a male socket.
- the torque output element 10 comprises a metal core 11 on which the toothed sector 12 is overmolded.
- This toothed sector 12 has a semi-global toothing, that is to say that the toothing is the combination of half a helical toothing and half a global toothing. This toothing has the advantage of being able to transmit a higher torque than a conventional helical toothing.
- the torque output element 10 partly covers the barrel 21 axially along the Z axis.
- the teeth of the toothed sector 12 and the rolling member 30 are in the same plane P defined along the X, Y directions.
- the housing 2 comprises an opening in the form of a guide barrel 7 in which the torque output element 10 is mounted.
- the support element 20 further comprises an opening coaxial with the axis of rotation Z of the torque output element 10, in order to allow the passage of a system for detecting the angular position of the torque output element 10.
- the detection system comprises a magnetic target 14 arranged on the torque output element 10 and a sensor 41 arranged on the electronic card 40.
- the magnetic target 14 is overmolded on the toothed sector 12 at the end of the torque output element 10 opposite the female socket.
- the electronic card 40 is fixed to the support element 20, in particular by screws.
- Figure 4 shows more precisely the mounting of the rolling member 30 in the barrel 21 of the support element 20.
- the rolling member 30 is inserted in the barrel 21 following a machining operation of the support element 20 in order to create a rolling surface.
- the rolling member 30 is a ball bearing and thus comprises an inner ring 31 and an outer ring 32 between which the balls are arranged.
- the outer ring 32 is in axial abutment against a shoulder 22 of the support element 20 and the inner ring 31 is in axial abutment against a shoulder 13 of the torque output element 10.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202480030527.0A CN121057905A (zh) | 2023-05-24 | 2024-05-06 | 机电致动器 |
| EP24723887.6A EP4720548A1 (fr) | 2023-05-24 | 2024-05-06 | Actionneur électromécanique |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2305124 | 2023-05-24 | ||
| FR2305124A FR3149065A1 (fr) | 2023-05-24 | 2023-05-24 | Actionneur électromécanique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024240482A1 true WO2024240482A1 (fr) | 2024-11-28 |
Family
ID=87748206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/062486 Ceased WO2024240482A1 (fr) | 2023-05-24 | 2024-05-06 | Actionneur électromécanique |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4720548A1 (fr) |
| CN (1) | CN121057905A (fr) |
| FR (1) | FR3149065A1 (fr) |
| WO (1) | WO2024240482A1 (fr) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2362196A (en) * | 1997-05-30 | 2001-11-14 | Luk Getriebe Systeme Gmbh | Device for operating an automated shift transmission |
| US20190107197A1 (en) * | 2017-10-06 | 2019-04-11 | MAGNETI MARELLI S.p.A. | Electromechanical, active dual-redundancy, twin-motor actuator to operate a component of a vehicle |
| WO2020065088A1 (fr) * | 2018-09-28 | 2020-04-02 | Sonceboz Mechatronics Boncourt Sa | Actionneur électrique |
| DE102019100300A1 (de) | 2019-01-08 | 2020-07-09 | Küster Holding GmbH | Parksperraktuator |
| CN114791041A (zh) * | 2022-04-30 | 2022-07-26 | 法可赛(太仓)汽车配件有限公司 | 换挡执行器 |
| US20220325792A1 (en) * | 2021-04-13 | 2022-10-13 | Valeo Systemes De Controle Moteur | Actuator for the actuation of at least one movable member, in particular for changing gear ratios in a motor vehicle transmission |
-
2023
- 2023-05-24 FR FR2305124A patent/FR3149065A1/fr active Pending
-
2024
- 2024-05-06 WO PCT/EP2024/062486 patent/WO2024240482A1/fr not_active Ceased
- 2024-05-06 EP EP24723887.6A patent/EP4720548A1/fr active Pending
- 2024-05-06 CN CN202480030527.0A patent/CN121057905A/zh active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2362196A (en) * | 1997-05-30 | 2001-11-14 | Luk Getriebe Systeme Gmbh | Device for operating an automated shift transmission |
| US20190107197A1 (en) * | 2017-10-06 | 2019-04-11 | MAGNETI MARELLI S.p.A. | Electromechanical, active dual-redundancy, twin-motor actuator to operate a component of a vehicle |
| WO2020065088A1 (fr) * | 2018-09-28 | 2020-04-02 | Sonceboz Mechatronics Boncourt Sa | Actionneur électrique |
| DE102019100300A1 (de) | 2019-01-08 | 2020-07-09 | Küster Holding GmbH | Parksperraktuator |
| US20220325792A1 (en) * | 2021-04-13 | 2022-10-13 | Valeo Systemes De Controle Moteur | Actuator for the actuation of at least one movable member, in particular for changing gear ratios in a motor vehicle transmission |
| CN114791041A (zh) * | 2022-04-30 | 2022-07-26 | 法可赛(太仓)汽车配件有限公司 | 换挡执行器 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4720548A1 (fr) | 2026-04-08 |
| FR3149065A1 (fr) | 2024-11-29 |
| CN121057905A (zh) | 2025-12-02 |
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