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CN-121995687-A - Vehicle projection curtain device, control method and vehicle

CN121995687ACN 121995687 ACN121995687 ACN 121995687ACN-121995687-A

Abstract

The application relates to the technical field of vehicle projection, in particular to a vehicle projection curtain device, a control method and a vehicle thereof. The utility model provides a vehicle projection curtain device, includes box body, coil pipe, curtain, drive mechanism and clutch, the coil pipe install in the box body, the curtain roll-up in the coil pipe, the clutch set up in the box body and with pass through between the coil pipe drive mechanism is connected, wherein, the clutch includes brake disc, base and friction disc, the brake disc is fixed in drive mechanism, the base is installed in the box body, the friction disc be used for with the brake disc separation is in order to relieve to the braking of coil pipe, perhaps the friction disc be used for with the full linkage of brake disc, in order to lock the coil pipe. The control method is realized based on the vehicle projection curtain device. A vehicle includes a vehicle projection curtain device. The application can reduce the noise of the start and stop of the clutch and effectively improve the vehicle experience.

Inventors

  • LI GUOLIN
  • NA XIAO
  • WU CHENQING
  • ZHANG LIGUANG

Assignees

  • 浙江极氪智能科技有限公司
  • 浙江吉利控股集团有限公司

Dates

Publication Date
20260508
Application Date
20260206

Claims (13)

  1. 1. The vehicle projection curtain device is characterized in that the vehicle projection curtain device (100) comprises a box body (10), a winding pipe (20), a curtain (30), a transmission mechanism (40) and a clutch (50), wherein the winding pipe (20) is installed in the box body (10), the curtain (30) is wound in the winding pipe (20), and the clutch (50) is arranged in the box body (10) and is in transmission connection with the winding pipe (20) through the transmission mechanism (40); The clutch (50) comprises a brake disc (51), a base (52) and a friction disc (53), wherein the brake disc (51) is fixed on the transmission mechanism (40), the base (52) is arranged on the box body (10), the friction disc (53) is used for being separated from the brake disc (51) so as to release braking on the coil pipe (20), or the friction disc (53) is used for being in full linkage with the brake disc (51) so as to lock the coil pipe (20).
  2. 2. The vehicle projection curtain device according to claim 1, characterized in that the clutch (50) further comprises an elastic mechanism (54) and an electromagnet (55), one end of the elastic mechanism (54) is mounted on the base (52), and the other end is connected with the friction disc (53); The electromagnet (55) is arranged on the base (52), in an electrified state, the electromagnet (55) and the friction disc (53) are attracted, the acting force is F 1 , the acting force of the elastic mechanism (54) on the friction disc (53) is F 2 , and the direction of F 1 is opposite to the direction of F 2 .
  3. 3. The vehicle projection curtain device according to claim 2, characterized in that the electromagnet (55) is de-energized in a step-down voltage during a step-down movement of the friction disc (53) in the direction of the brake disc (51).
  4. 4. A vehicle projection curtain device according to claim 2 or 3, characterized in that the elastic means (54) is configured as an elastic member (543), the friction disc (53) is made of ferromagnetic material and is located at a side of the base (52) facing the brake disc (51), a first mounting hole (521) extending along an axial direction of the winding tube (20) is opened at a side of the base (52) facing the brake disc (51), the elastic member (543) is mounted in a compressed manner, and one end of the elastic member (543) is limited in the first mounting hole (521) and the other end is limited in the friction disc (53); Wherein, in the electromagnet (55) energized state, the electromagnet (55) and the friction disk (53) are attracted to each other.
  5. 5. A vehicle projection curtain device according to claim 2 or 3, characterized in that the elastic means (54) comprises a first magnet (541) and a second magnet (542), a first mounting hole (521) extending along the axial direction of the winding tube (20) is formed in one side of the base (52) facing the brake disc (51), the first magnet (541) is accommodated in the first mounting hole (521), one end of the second magnet (542) is disposed in the first mounting hole (521) and is repulsive to and spaced from the first magnet (541), the other end of the second magnet (542) extends out of the first mounting hole (521) and is connected to the friction disc (53), and the friction disc (53) is made of ferromagnetic material and is disposed on one side of the base (52) facing the brake disc (51).
  6. 6. The vehicle projection curtain device of claim 2, wherein the number of elastic mechanisms (54) is configured as group a, the elastic mechanisms (54) of group a being spaced along the circumference of the base (52) and 2-a-6.
  7. 7. The vehicle projection curtain device according to claim 2, characterized in that one or more of the surfaces of the brake disc (51), the friction disc (53) and the electromagnet (55) are wrapped with a damping layer.
  8. 8. The vehicle projection curtain device of claim 2, wherein the clutch (50) further comprises a sliding sleeve (56), the sliding sleeve (56) being sleeved on the base (52) and rotatably coupled to the roller tube (20).
  9. 9. The vehicle projection curtain device according to claim 2, characterized in that the transmission mechanism (40) comprises a reduction gearbox (41) and a coupling (42), the reduction gearbox (41) has an output shaft (411) and an input shaft (412), the output shaft (411) is fixedly connected with the brake disc (51), and the input shaft (412) is connected with the winding tube (20) through the coupling (42).
  10. 10. The vehicle projection curtain device of claim 2, wherein the curtain (30) has a fixed end (31) and a depending end (32), the fixed end (31) being connected to the roller tube (20), the depending end (32) being extendable or retractable into the box (10); the vehicle projection curtain device (100) further comprises an arm lever mechanism (70), wherein the arm lever mechanism (70) is installed on the box body (10) and connected with the hanging end (32), the arm lever mechanism (70) is in a folded state and an unfolded state, and the arm lever mechanism (70) can be correspondingly folded in the box body (10) or unfolded outside the box body (10) when being switched between the folded state and the unfolded state so as to drive the hanging end (32) to move in the lifting direction of the curtain (30).
  11. 11. A control method implemented on the basis of the vehicle projection curtain device (100) of any one of claims 2-10, characterized in that the control method (200) comprises: In the process that the friction disc (53) moves gradually towards the brake disc (51), acquiring voltage U of the electromagnet (55) in an electrified state at the current moment t 0 , wherein the voltage U is more than or equal to U 1 , and the voltage U 1 is set to be the voltage accessed by the electromagnet (55) when F 1 is equal to F 2 ; And gradually reducing the voltage U by a preset amplitude threshold until the voltage U is zero.
  12. 12. The control method according to claim 11, wherein the step of stepping down the voltage U by a preset amplitude threshold until the voltage U is zero comprises: Gradually reducing the voltage U to U 1 by a first preset amplitude threshold value so that F 1 is equal to F 2 ; Continuously gradually reducing the voltage U 1 to U 2 by a second preset amplitude threshold value, and gradually resetting the elastic mechanism (54) and reducing F 1 、F 2 when the voltage is U 2 , wherein the friction disc (53) starts to contact the brake disc (51) when the voltage is U 2 ; And continuously gradually reducing U 2 by a third preset amplitude threshold until zero, wherein the friction disc (53) presses the brake disc (51) and forms friction fit under the action of the elastic mechanism (54).
  13. 13. A vehicle comprising a vehicle body and a vehicle projection curtain device (100) as claimed in any one of claims 1 to 10, the vehicle projection curtain device (100) being mounted to the vehicle body.

Description

Vehicle projection curtain device, control method and vehicle Technical Field The application relates to the technical field of vehicle projection, in particular to a vehicle projection curtain device, a control method and a vehicle thereof. Background The projection curtain on the vehicle is one of the core components of the vehicle-mounted entertainment system and is mainly used for improving the in-vehicle video viewing experience. When the projection curtain is used in a vehicle and is fully opened or fully closed or hovered, the curtain winding pipe is required to be braked so as to realize the curtain tightening effect. The braking of the existing winding pipe is generally realized through a motor and a gear box, but the noise in the running process of the motor is overlarge, so that the automobile use experience is greatly affected. Disclosure of Invention Based on this, it is necessary to provide a vehicle projection curtain device, a control method and a vehicle thereof, which can realize the steady-state braking of the winding tube and reduce or eliminate noise, and promote the vehicle experience. In order to solve the technical problems, the application provides the following technical scheme: The vehicle projection curtain device comprises a box body, a winding pipe, a curtain, a transmission mechanism and a clutch, wherein the winding pipe is arranged in the box body, the curtain is wound in the winding pipe, and the clutch is arranged in the box body and is in transmission connection with the winding pipe through the transmission mechanism; The clutch comprises a brake disc, a base and a friction disc, wherein the brake disc is fixed on the transmission mechanism, the base is mounted on the box body, and the friction disc is used for being separated from the brake disc so as to release braking of the coiled tube, or is used for being in full linkage with the brake disc so as to lock the coiled tube. In one embodiment, the clutch further comprises an elastic mechanism and an electromagnet, one end of the elastic mechanism is mounted on the base, the other end of the elastic mechanism is connected with the friction disc, the electromagnet is mounted on the base, in an electrified state, the electromagnet and the friction disc attract each other, the acting force is F 1, the acting force of the elastic mechanism on the friction disc is F 2, and the direction of F 1 is opposite to the direction of F 2. In one embodiment, the electromagnet is de-energized by gradually decreasing the voltage during the step-wise movement of the friction disc in the direction of the brake disc. In one embodiment, the elastic mechanism is configured as an elastic piece, the friction disc is made of ferromagnetic materials and is located on one side, facing the brake disc, of the base, a first mounting hole extending along the axial direction of the winding pipe is formed in one side, facing the brake disc, of the base, the elastic piece is installed in a compressed mode, one end of the elastic piece is limited in the first mounting hole, and the other end of the elastic piece is limited in the friction disc, and in the electromagnet electrified state, the electromagnet and the friction disc attract each other. In one embodiment, the elastic mechanism comprises a first magnet and a second magnet, a first mounting hole extending along the axial direction of the winding pipe is formed in one side of the base, facing the brake disc, of the base, the first magnet is contained in the first mounting hole, one end of the second magnet is located in the first mounting hole and is arranged in a repulsive mode and in a spaced mode with the first magnet, the other end of the second magnet extends out of the first mounting hole and is connected with the friction disc, and the friction disc is made of ferromagnetic materials and is located on one side of the base, facing the brake disc. In one embodiment, the number of the elastic mechanisms is configured into A groups, the elastic mechanisms in A groups are spaced along the circumferential direction of the base, and 2≤A≤6. By arranging the N groups of elastic mechanisms, the acting force of the elastic mechanisms on the friction disc in the circumferential direction of the base is relatively uniform, and the running stability of the friction disc is improved. In one embodiment, one or more surfaces of the brake disc, the friction disc and the electromagnet are coated with a damping layer. So set up, utilize the damping layer to help reducing mechanical structure's resonance amplitude, reduce contact noise, further reduce the noise that clutch "opens and stops", promote the car and experience. In one embodiment, the clutch further comprises a sliding sleeve, and the sliding sleeve is sleeved on the base and is rotatably connected with the winding pipe. In one embodiment, the transmission mechanism comprises a reduction gearbox and a coupling, the reduction gearbox is provided with