An electric tail wing driving device, an electric tail wing assembly and a vehicle

Abstract

The application relates to the automobile technical field and discloses an electric tail wing driving device, an electric tail wing assembly and an automobile. The driving device comprises a motor, a planetary reduction gearbox is installed on an output shaft of the motor, a first transmission shaft is connected with the planetary reduction gearbox, a second transmission shaft is arranged in parallel with the first transmission shaft, a gear assembly comprises at least two transmission gears which are sequentially meshed, one transmission gear is installed on the first transmission shaft, and one transmission gear is installed on the second transmission shaft. The gear assembly parallel-transmits rotating power of the first transmission shaft to the second transmission shaft, and rotating power output by the second transmission shaft is used for driving the tail wing to lift and fall. The application can improve the transmission efficiency of the electric tail wing driving device.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to an electric rear wing drive device, an electric rear wing assembly, and an automobile. Background Technology

[0002] According to aerodynamics, cars encounter significant air resistance at high speeds, which has an adverse effect on the vehicle. To reduce the impact of air resistance at high speeds, an electric rear wing assembly is installed at the rear of the car. The raised wing counteracts some of the lift, reducing the drag coefficient and increasing the car's traction.

[0003] The electric rear wing can automatically adjust with vehicle speed; it retracts when the car is traveling at low speeds and rises when the car is traveling at high speeds. The wing's raising and lowering is driven by an electric drive system; however, existing electric rear wing drive systems have low transmission efficiency, affecting the wing's raising and lowering performance. Summary of the Invention

[0004] The purpose of this invention is to provide an electric rear wing drive device, an electric rear wing assembly, and an automobile, so as to improve the transmission efficiency of the electric rear wing drive device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This invention provides an electric tail wing drive device, comprising:

[0007] An electric motor, wherein a planetary gearbox is mounted on the output shaft of the electric motor;

[0008] A first drive shaft is connected to the planetary gearbox.

[0009] A second drive shaft is arranged parallel to the first drive shaft;

[0010] A gear assembly comprising at least two sequentially meshing transmission gears, one transmission gear mounted on a first transmission shaft and the other transmission gear mounted on a second transmission shaft;

[0011] The gear assembly transmits the rotational power of the first drive shaft to the second drive shaft in parallel, and the rotational power output by the second drive shaft is used to drive the tail wing to rise and fall.

[0012] Preferably, a magnet and a printed circuit board are installed at the tail of the motor, and a Hall element is provided on the printed circuit board for connecting to the vehicle computer.

[0013] Preferably, the electric tail wing drive device further includes a switch and a switch toggle block. The switch is used to connect to the vehicle computer. The switch toggle block is coaxially mounted on the second drive shaft. A groove is formed on one side surface of the switch toggle block. The contact of the switch can be placed in the groove. The switch toggle block rotates synchronously with the second drive shaft to trigger the switch.

[0014] Preferably, the electric tail wing drive device further includes a lower housing, in which the motor, the planetary gearbox, the gear assembly, the second drive shaft, the switch, and the switch toggle block are all installed, and the two ends of the second drive shaft extend axially out of the lower housing to both sides.

[0015] Preferably, a limiting groove is provided inside the lower shell, and the outer edge of the switch toggle block is inserted into the limiting groove.

[0016] Preferably, an elastic element is fixed on one side of the switch toggle block, the elastic element is coaxially sleeved on the second transmission shaft, and the elastic element abuts against the inner wall of the lower shell.

[0017] Preferably, a buffer rubber block is fixed on the lower shell.

[0018] Preferably, the gear assembly includes a first transmission gear and a second transmission gear, wherein the first transmission gear is mounted on the first transmission shaft; the second transmission gear is mounted on the second transmission shaft, and the second transmission gear meshes with the first transmission gear.

[0019] The present invention provides an electric tail wing assembly, including an electric tail wing and an electric tail wing drive device as described above, wherein the electric tail wing drive device is connected to the electric tail wing for driving the electric tail wing to rise and fall.

[0020] The present invention provides an automobile, including a body, wherein the body is provided with an electric rear wing assembly as described above.

[0021] Compared with the prior art, the electric rear wing drive device, electric rear wing assembly, and automobile of this invention have the following advantages:

[0022] The electric tail wing drive device of this invention connects a planetary gearbox to a motor. The rotational power of the first drive shaft is transmitted in parallel to the second drive shaft via a gear assembly. The rotational power output from the second drive shaft drives the tail wing to rise and fall. The motor drives the planetary gearbox to rotate, which reduces the speed and increases the torque of the motor. The torque of the planetary gearbox is then transmitted to the transmission gears via the first drive shaft. The second drive shaft rotates synchronously with the transmission gears mounted on it. The transmission gears mesh sequentially, transmitting torque and speed in parallel, thus improving transmission efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the electric tail wing drive device according to an embodiment of the present invention;

[0024] Figure 2 This is a side view of the electric tail wing drive device described in an embodiment of the present invention;

[0025] Figure 3 yes Figure 2 Sectional view along line A-A in the middle;

[0026] Figure 4 This is a schematic diagram of the electric tail wing drive device according to an embodiment of the present invention with the top cover removed;

[0027] Figure 5 yes Figure 4 A magnified view of part B in the middle section;

[0028] Figure 6 This is a schematic diagram of the connection between the first transmission gear and the second transmission gear in an embodiment of the present invention. Figure 1 ;

[0029] Figure 7 This is a schematic diagram of the connection between the first transmission gear and the second transmission gear in an embodiment of the present invention. Figure 2 ;

[0030] Figure 8 This is a schematic diagram of the structure of the switch and the switch toggle block in an embodiment of the present invention;

[0031] In the diagram, 1. Motor; 11. Magnet; 12. Printed circuit board; 13. Hall element; 14. Wiring harness; 15. Connector; 2. Planetary gearbox; 3. First drive shaft; 4. Second drive shaft; 5. Gear assembly; 51. First drive gear; 52. Second drive gear; 6. Switch; 7. Switch toggle block; 71. Groove; 72. Elastic element; 8. Lower shell; 81. Limiting groove; 82. Buffer rubber block; 83. Pressure plate; 9. Top cover. Detailed Implementation

[0032] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0035] like Figure 1 - Figure 8 As shown, an electric tail wing drive device according to an embodiment of the present invention includes a motor 1, a first transmission shaft 3, a second transmission shaft 4, and a gear assembly 5. A planetary gearbox 2 is mounted on the output shaft of the motor 1, which reduces speed and increases torque for the motor 1. The planetary gearbox 2 is a three-stage planetary gearbox. The first transmission shaft 3 is connected to the planetary gearbox 2. The second transmission shaft 4 is arranged parallel to the first transmission shaft 3. The gear assembly 5 includes at least two sequentially meshing transmission gears. One transmission gear is mounted on the first transmission shaft 3, and the other is mounted on the second transmission shaft 4. The rotation axes of each transmission gear are parallel to the first transmission shaft 3 and the second transmission shaft 4. Each transmission gear is a spur gear, and the transmission gears drive in parallel. The gear assembly 5 transmits the rotational power of the first transmission shaft 3 to the second transmission shaft 4 in parallel. The rotational power output from the second transmission shaft 4 is used to drive the tail wing to rise and fall, providing power to the tail wing.

[0036] In this invention, a planetary gearbox 2 is connected to a motor 1. The rotational power of the first drive shaft 3 is transmitted in parallel to the second drive shaft 4 via a gear assembly 5. The rotational power output from the second drive shaft 4 drives the tail fin to rise and fall. The motor 1 drives the planetary gearbox 2 to rotate, reducing speed and increasing torque for the motor 1. The torque of the planetary gearbox 2 is then transmitted to the transmission gears via the first drive shaft 3. The second drive shaft 4 rotates synchronously with the transmission gears mounted on it. The transmission gears mesh sequentially, transmitting torque and speed in parallel, thus improving transmission efficiency.

[0037] In this embodiment, as Figure 6 and Figure 7As shown, there are two transmission gears: a first transmission gear 51 and a second transmission gear 52. The first transmission gear 51 is mounted on the first transmission shaft 3, and the second transmission gear 52 is mounted on the second transmission shaft 4, meshing with the first transmission gear 51. The central axes of the first transmission gear 51 and the second transmission gear 52 are parallel, which reduces the overall size of the drive unit, minimizes its space occupation, and facilitates its placement within the electric tail wing assembly.

[0038] like Figure 3 - Figure 5 As shown, a magnet 11 and a printed circuit board 12 are mounted at the tail of the motor 1. A Hall element 13 is mounted on the printed circuit board 12 and is used to connect to the vehicle's computer. Both the magnet 11 and the printed circuit board 12 are disc-shaped, coaxially arranged. The magnet 11 is mounted on the motor 1, and the printed circuit board 12 is spaced apart on one side of the magnet 11. A wiring harness 14 is connected to the Hall element 13, with its end connected to a connector 15. The connector 15 connects to the vehicle's computer, enabling the Hall element 13 to receive commands from the computer. The Hall element 13 can sense changes in the magnetic field of the magnet 11 and feed back a signal to the vehicle's computer, allowing the computer to monitor the rotational speed of the motor 1. Monitoring the rotational speed of the motor 1 ensures stable raising of the tail fin and allows for timely control of the tail fin to stop rising and falling. When the monitored rotational speed of the motor 1 is too fast or too slow, the vehicle's computer can issue deceleration or acceleration commands to the motor 1 to ensure stable raising and lowering of the tail fin.

[0039] In this embodiment, the electric tail wing drive device further includes a switch 6 and a switch toggle block 7. The switch 6 is used to connect to the vehicle computer and send feedback signals to the vehicle computer. The switch toggle block 7 is coaxially mounted on the second drive shaft 4, and a groove 71 is formed on one side surface of the switch toggle block 7. Figure 8As shown, the contact of switch 6 can be placed in the groove 71. The switch actuating block 7 rotates synchronously with the second drive shaft 4 to trigger switch 6. Switch 6 is located on the lower side of the second drive shaft 4. When the contact of switch 6 is placed in the groove 71, the contact of switch 6 does not contact the switch actuating block 7, and the switch actuating block 7 does not trigger switch 6. When switch actuating block 7 is fixed to the second drive shaft 4, the rotation of the second drive shaft 4 will drive switch actuating block 7 to rotate synchronously. When switch actuating block 7 rotates, the position of groove 71 changes, and the surface of switch actuating block 7 contacts the contact of switch 6. Switch actuating block 7 presses the contact of switch 6, thereby triggering switch 6. In the closed state, the contact of switch 6 is placed in the groove 71. The status of the rear wing is fed back to the vehicle computer through switch 6. Not triggering switch 6 indicates that the contact of switch 6 is placed in the groove 71 and the rear wing is in the closed state; triggering switch 6 indicates that the rear wing is in the deployed state.

[0040] Furthermore, the switch toggle block 7 is annular in shape, and a groove 71 is formed on the surface of the switch toggle block 7, with the groove opening of the groove 71 facing the direction of the switch 6.

[0041] like Figure 4 and Figure 8 As shown, the electric tail wing drive device also includes a lower housing 8. The motor 1, the planetary gearbox 2, the gear assembly 5, the second transmission shaft 4, the switch 6, and the switch actuating block 7 are all installed inside the lower housing 8. Both ends of the second transmission shaft 4 extend axially out of the lower housing 8 to the sides. The lower housing 8 serves as a support for the various components of the drive device, providing installation space for each component. Further, a limiting groove 81 is provided inside the lower housing 8. The outer edge of the switch actuating block 7 is inserted into the limiting groove 81. The limiting groove 81 limits the axial movement of the switch actuating block 7, ensuring that the switch actuating block 7 can only rotate synchronously with the second transmission shaft 4. Two limiting grooves 81 can be provided, with the two limiting grooves 81 facing each other and their openings facing the switch actuating block 7. The switch toggle block 7 is annular in shape, and a step is provided in the axial direction of the switch toggle block 7. The step divides the switch toggle block 7 into a large diameter section and a small diameter section. The large diameter section of the switch toggle block 7 is placed in the limiting groove 81, and the groove 71 is opened on the surface of the small diameter section.

[0042] Furthermore, such as Figure 8 As shown, an elastic element 72 is fixed to one side of the switch toggle block 7. The elastic element 72 is coaxially sleeved on the second transmission shaft 4, and abuts against the inner wall of the lower shell 8. The elastic element 72 is a compression spring, which presses down on the switch toggle block 7 to eliminate the axial clearance of the switch toggle block 7, so as to obtain more accurate triggering precision.

[0043] A buffer rubber block 82 is fixed on the lower shell 8. The buffer rubber block 82 is used to block the vibration and noise transmission of the entire drive device. The buffer rubber block 82 is disposed on the outer edge of the lower shell 8 and is spaced apart along the length or width direction of the lower shell 8.

[0044] The electric tail wing drive device also includes an upper cover 9, which covers the lower shell 8.

[0045] A through-cavity is provided on one side of the lower shell 8, with the right end of the cavity communicating with the internal space of the lower shell 8. The gear assembly 5 is located within the cavity, which protects the gear assembly 5. A pressure plate 83 is provided at the left end of the cavity, enclosing the gear assembly 5 within it. The pressure plate 83 has a through hole for the second drive shaft 4 to extend out.

[0046] The electric tail wing assembly of the present invention includes an electric tail wing and an electric tail wing drive device as described above. The electric tail wing drive device is connected to the electric tail wing to drive the electric tail wing to rise and fall.

[0047] The automobile of the present invention includes a body, and the body is provided with an electric rear wing assembly as described above.

[0048] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. An electric tail fin drive device, characterized in that, include: An electric motor, wherein a planetary gearbox is mounted on the output shaft of the electric motor; A first drive shaft is connected to the planetary gearbox. A second drive shaft is arranged parallel to the first drive shaft; A gear assembly comprising at least two sequentially meshing transmission gears, one transmission gear mounted on a first transmission shaft and the other transmission gear mounted on a second transmission shaft; The gear assembly transmits the rotational power of the first drive shaft to the second drive shaft in parallel, and the rotational power output by the second drive shaft is used to drive the tail wing to rise and fall. The electric tail wing drive device also includes a switch and a switch actuation block. The switch is used to connect to the vehicle's computer. The switch actuation block is coaxially mounted on the second drive shaft. A groove is formed on one side surface of the switch actuation block, and the contact of the switch can be placed in the groove. When the contact of the switch is placed in the groove, the contact of the switch does not contact the switch actuation block. The switch actuation block rotates synchronously with the second drive shaft, so that the surface of the switch actuation block contacts the contact of the switch. The switch actuation block presses the contact of the switch to trigger the switch. When the tail fin is closed, the switch contacts are placed in the groove; when the tail fin is deployed, the surface of the switch toggle block is in contact with the switch contacts. The electric tail wing drive device also includes a lower housing, in which the motor, the planetary gearbox, the gear assembly, the second drive shaft, the switch, and the switch toggle block are all installed. The two ends of the second drive shaft extend axially out of the lower housing to both sides. The lower shell is provided with a limiting groove, and the outer edge of the switch toggle block is inserted into the limiting groove; an elastic element is fixed on one side of the switch toggle block, and the elastic element is coaxially sleeved on the second transmission shaft, and the elastic element abuts against the inner wall of the lower shell.

2. The electric tail wing drive device according to claim 1, characterized in that, The motor has a magnet and a printed circuit board installed at its tail. The printed circuit board has a Hall element, which is used to connect to the vehicle's computer.

3. The electric tail wing drive device according to claim 1, characterized in that, A cushioning rubber block is fixed on the lower shell.

4. The electric tail wing drive device according to claim 1, characterized in that, The gear assembly includes a first transmission gear and a second transmission gear. The first transmission gear is mounted on the first transmission shaft; the second transmission gear is mounted on the second transmission shaft and meshes with the first transmission gear.

5. An electric tail wing assembly, characterized in that, include: An electric tail wing and an electric tail wing drive device as described in any one of claims 1-4, wherein the electric tail wing drive device is connected to the electric tail wing in a transmission manner to drive the electric tail wing to lift and lower.

6. A car, characterized in that, The vehicle body includes an electric rear wing assembly as described in claim 5.

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