Sunshade assembly of vehicle, vehicle and control method of vehicle

Abstract

According to the sunshade assembly of the vehicle, the vehicle and the control method of the vehicle, the structure of the sunshade assembly of the vehicle is improved, and the situation that the space in a vehicle cabin is occupied when a sunshade plate is not used is avoided. The vehicle comprises a roof metal plate, a top trim panel and a sunshade assembly, the top trim panel and the roof metal plate jointly define a containing cavity in an enclosing mode, the top trim panel is provided with an opening, and the containing cavity communicates with the outside through the opening; the sun-shading assembly is arranged in the containing cavity and comprises a driving part and a sun-shading plate, and the driving part is used for driving the sun-shading plate to stretch out of the containing cavity or retract into the containing cavity. By means of the mode, the space between the car roof metal plate and the top trim panel is used for containing the sunshade assembly, the sunshade plate can retract into the containing cavity in the state that the sunshade plate does not need to work, and therefore occupied space in a car cabin is reduced; when the plate needs to work, the plate can extend out of the opening for shading.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle design, and in particular to a sunshade assembly of a vehicle, a vehicle and a control method of the vehicle. Background Art

[0002] In traditional vehicle design, the sun visor of the vehicle's front glass is a common in-vehicle accessory, and its main function is to block the strong sunlight from the front to protect the driver and front passengers from glare. Traditional sun visors are usually designed to be installed on the outside of the roof trim.

[0003] However, the sun visor takes up a certain amount of space in the car, which is undoubtedly a waste of space resources for modern vehicle design that pursues space utilization efficiency and comfort. Especially in compact vehicles or models with compact space layout, the presence of the sun visor may further squeeze the passenger's leg space or head space, affecting the riding experience. Summary of the invention

[0004] The purpose of the present invention is to provide a sunshade assembly for a vehicle, a vehicle and a control method for the vehicle, and by improving the structure of the sunshade assembly for the vehicle, the sun visor is prevented from occupying space in the vehicle cabin when not in use.

[0005] To achieve the above-mentioned purpose, the present invention provides a sunshade assembly for a vehicle, the vehicle comprising a roof sheet metal, a top trim and a sunshade assembly, the top trim is fixedly connected to the roof sheet metal, and together encloses and defines a accommodating cavity, the top trim is provided with an opening, and the accommodating cavity is connected to the outside through the opening; the sunshade assembly is arranged in the accommodating cavity, the sunshade assembly comprises a driving unit and a sun visor, the driving unit is used to drive the sun visor to extend out of the accommodating cavity or retract into the accommodating cavity.

[0006] In this way, the space between the roof sheet metal and the top trim is used to accommodate the sunshade assembly, and when the sunshade does not need to work, it can be retracted into the accommodation cavity, thereby reducing the space occupied in the cabin; when the sunshade needs to work, it can be extended from the opening for sunshade.

[0007] Optionally, a rotation driving assembly is further included, the rotation driving assembly comprising a first guide portion arranged on one side of the sun visor and a gear shaft sleeved with a gear, the gear having a plurality of teeth circumferentially distributed around the gear shaft; the first guide portion has a plurality of tooth grooves in its extending direction that can mesh with the teeth in sequence; the plurality of tooth grooves are spaced apart. In this way, the sun visor is rotated around the gear shaft, thereby achieving the angle adjustment of the sun visor.

[0008] Optionally, one end of the sun visor is provided with a slot extending along the axial direction of the gear shaft, and the gear shaft is radially engaged in the slot and forms a circumferential stop with the slot, thereby realizing the rotation of the gear shaft and the sun visor and realizing the detachable connection between the gear shaft and the sun visor, which is convenient for subsequent maintenance and replacement.

[0009] Optionally, it also includes a second guide portion arranged on the other side of the sun visor and a connecting block that guides and cooperates with the second guide portion, the driving portion is transmission-connected to the connecting block to drive the connecting block to move along the extension direction of the second guide portion; the connecting block is connected to a connecting shaft, and the connecting shaft and the gear shaft form a stop fit in the radial direction.

[0010] The sun visor can be pushed out and retracted through the guiding cooperation between the connecting block and the second guide part. At the same time, the connecting shaft and the gear shaft radial stop cooperate to realize the following movement of the connecting shaft and the gear shaft. In addition, such a layout reduces the space occupied by the sunshade assembly in the accommodating cavity.

[0011] Optionally, the gear shaft is a tubular structure, and part of the connecting shaft is inserted into the gear shaft, thereby further simplifying the matching mode between the connecting shaft and the gear shaft.

[0012] Optionally, the connection block is fixedly connected to the connection shaft, and the gear shaft can rotate relative to the connection shaft. Thus, when the gear shaft rotates, the connection shaft and the connection block will not interfere with the rotation of the gear shaft.

[0013] Optionally, the connecting shaft is hinged to the connecting block, and the connecting shaft can rotate with the gear shaft and can rotate relative to the connecting block. Thus, when the gear shaft rotates, the connecting shaft and the connecting block will not interfere with the rotation of the gear shaft.

[0014] Optionally, the second guide part is a worm, the worm and the first guide part extend in the same direction; the worm is drivingly connected to the output end of the driving part; the connecting block is a turbine sleeved and adapted to the worm. Thus, not only the guiding function but also the transmission function is realized, and the structure of the sunshade assembly is further simplified.

[0015] Optionally, the first guide portion has a first rail section and a second rail section connected in the extension direction thereof, and a plurality of the tooth grooves are located in the second rail section. In this way, the slot is provided on part of the first guide portion, thereby increasing the guiding length of the first guide portion for the gear and ensuring the accuracy of the movement of the sun visor.

[0016] A vehicle includes the aforementioned sunshade assembly; the vehicle also includes a roof sheet metal top trim and a sunshade assembly, the top trim and the roof sheet metal together enclose and define the accommodating cavity.

[0017] A vehicle control method adapted for the aforementioned vehicle, wherein the sunshade assembly further comprises a controller connected to the drive unit signal and a sunlight sensor connected to the controller signal;

[0018] The control method comprises:

[0019] Step 1, detecting the ambient light intensity;

[0020] Step 2, obtaining the light intensity of human eyes;

[0021] Step 3, when the current ambient light intensity is greater than or equal to a set threshold, the length of the sun visor extending from the top trim is calculated according to the ambient light intensity and the human eye light intensity, and the driving unit is controlled to drive the sun visor to extend into place;

[0022] Step 4, after the sun visor extends out of the top trim, detecting the ambient light intensity again, and maintaining the position of the sun visor when the current ambient light intensity is greater than or equal to the set threshold;

[0023] When the current ambient light intensity is less than the set threshold, the driving unit is controlled to move in the reverse direction to reset the sun visor.

[0024] In this way, not only can the space occupied by the sun visor in the cabin be reduced when not working, but the intelligent control of the sun visor can also be achieved.

[0025] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0027] Figure 1 is a schematic structural diagram of a sunshade assembly in an embodiment of the present invention, an axonometric view;

[0028] Figure 2 yes Figure 1 A top view of

[0029] Figure 3 yes Figure 2 A partial enlarged schematic diagram of

[0030] Figure 4 is a schematic structural diagram of a sun visor, showing the trajectory of the sun visor rotating on the second surface;

[0031] Figure 5 It is a diagram showing the matching status of the vehicle's roof trim and sunshade assembly;

[0032] Figure 6 It is a partial schematic diagram of the vehicle.

[0033] Reference numerals:

[0034] 1-roof sheet metal; 2-top trim; 21-opening; 3-sunshade assembly; 31-sunshade; 31a-slot; 32-drive assembly; 32a-gear; 32b-gear shaft; 32c-first guide part; 32c-1-first rail section; 32c-2-second rail section; 32c-2a-tooth groove; 32d-drive part; 33-second guide part; 34a-connecting block; 34b-connecting shaft; 35-front windshield. DETAILED DESCRIPTION

[0035] The present invention provides a sunshade assembly of a vehicle, a vehicle and a control method of the vehicle. By improving the structure of the sunshade assembly of the vehicle, the sunshade is prevented from occupying the space in the vehicle cabin when not in use.

[0036] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] Relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0038] Please refer to Figures 1 to 6 , Figure 1 is a schematic structural diagram of a sunshade assembly 3 in an embodiment of the present invention, an isometric view; Figure 2 yes Figure 1 A top view of Figure 3 yes Figure 2 A partial enlarged schematic diagram of

[0039] Figure 4 is a schematic structural diagram of the sun visor 31, showing the trajectory of the sun visor 31 rotating on the second surface; Figure 5 is a diagram showing the matching state of the roof trim 2 and the sunshade assembly 3 of the vehicle; Figure 6 It is a partial schematic diagram of the vehicle.

[0040] As shown in the figure, the present invention provides a sunshade assembly for a vehicle and a vehicle, the vehicle comprising a roof sheet metal 1, a top trim 2 and a sunshade assembly 3. The top trim 2 is fixedly connected to the roof sheet metal 1, and together they enclose a receiving cavity, the top trim is provided with an opening 21, and the receiving cavity is connected to the outside through the opening 21.

[0041] The sunshade assembly 3 is arranged in the accommodating cavity, and the sunshade assembly 3 includes a driving part 32d and a sunshade 31. The sunshade 31 is movably connected to the roof sheet metal 1 or the top trim 2. The driving part 32d is used to drive the sunshade 31 to move linearly in the first plane to extend out of the accommodating cavity or retract into the accommodating cavity. The first plane can be a plane parallel to the front windshield 35 of the vehicle, or it can be a plane at a certain angle to the plane where the front windshield 35 is located. In the first plane, the sunshade 31 is braked along a straight line.

[0042] Alternatively, the sun visor 31 can rotate relative to the top panel 2 in addition to linear movement in the first plane, and the rotation plane of the sun visor 31 is the second plane. The above method is not specifically limited here, as long as the sun visor 31 can extend out of the accommodating cavity through the opening 21 when sunshade is required.

[0043] In this way, the space between the roof sheet metal 1 and the top trim 2 is used to accommodate the sunshade assembly 3. When the sunshade 31 does not need to work, it can be retracted into the accommodating cavity, thereby reducing the space occupied in the cabin; when the panel needs to work, it can be extended from the opening 21 for sunshade.

[0044] In an optional implementation, the sun visor 31 rotates in the second plane. Specifically, the sun visor assembly 3 also includes a driving assembly 32, which includes a first guide portion 32c arranged on one side of the sun visor 31 and a gear shaft 32b on which a gear 32a is sleeved, and the gear 32a has a plurality of teeth distributed circumferentially around the gear shaft 32b. The first guide portion 32c extends in the same direction as the first reference plane. The gear 32a is limitedly adapted in the first guide portion 32c, and when the sun visor 31 moves linearly in the first plane, the gear 32a slides in the first guide portion 32c. That is to say, in this embodiment, when the sun visor 31 moves linearly, the gear 32a does not rotate, and the wheel axle does not rotate.

[0045] In an embodiment of the present application, in order to simplify the structure of the driving assembly 32 and enable the structure of the sunshade assembly 3 to adapt to the narrow space in the accommodating cavity, the present application drives the sun visor 31 to rotate by driving the linear sliding gear 32a to rotate and drive the rotating gear shaft 32b through the first guide portion 32c, and the sun visor 31 fixedly connected to the gear shaft 32b can also rotate accordingly.

[0046] Specifically, the first guide portion 32c is provided with a plurality of tooth grooves 32c-2a which can mesh with the tooth portion in sequence in its extending direction; the plurality of tooth grooves 32c-2a are distributed at intervals, and the intervals between the tooth grooves 32c-2a are adjusted according to the rotation angle required to be achieved by the gear 32a.

[0047] In order to fix the first guide portion 32c to the roof sheet metal 1, the roof sheet metal 1 is fixedly connected with a base, and the base is used to support the first guide portion 32c and the driving portion 32d, and support and maintain them on the first plane.

[0048] Specifically, the first guide portion 32c has a first rail section 32c-1 and a second rail section 32c-2 connected in the extension direction thereof, a plurality of tooth grooves 32c-2a are located in the second rail section 32c-2, and the gear 32a is slidably adapted to the first rail section 32c-1. In this way, the tooth grooves 32c-2a are arranged in part of the first guide portion 32c, which increases the guiding length of the first guide portion 32c to the gear 32a, thereby ensuring the accuracy of the movement of the sun visor 31.

[0049] When the gear 32a slides in a straight line until the tooth part meshes with the tooth groove 32c-2a, the gear 32a is driven to rotate a certain angle. As the gear 32a moves further, the tooth part that first meshes with the tooth groove 32c-2a will be pulled out of the tooth groove 32c-2a as the gear 32a moves, and then the tooth part on the front side of its rotation direction will mesh with the corresponding tooth groove 32c-2a. Therefore, in the extension direction of the tooth groove 32c-2a, the tooth groove 32c-2a can mesh with the corresponding tooth groove 32c-2a in sequence as the gear 32a moves in a straight line along the first guide portion 32c, thereby forming a rotation. Among them, the tooth groove 32c-2a has a set depth, which can penetrate the first guide portion 32c or not penetrate the first guide portion 32c, and the technicians in this field can set it by themselves.

[0050] During this rotation process, the sun visor 31 extends out of the opening 21 in parallel with the extension direction of the first guide portion 32c. At this time, the sun visor 31 moves in a straight line along the first surface until the tooth portion engages with the tooth groove 32c-2a. Then, the sun visor 31 and the first guide portion 32c move clockwise from the initial position located in the same plane to the target angle. During this process, the angle between the sun visor 31 and the first guide portion 32c gradually decreases.

[0051] In this way, the sun visor 31 is rotated around the gear shaft 32 b , thereby achieving angle adjustment of the sun visor 31 .

[0052] In order to achieve a fixed connection between the sun visor 31 and the gear shaft 32b, a clamping connection, a shaft connection, etc. can be used; in a specific method, a clamping groove 31a extending along the axial direction of the gear shaft 32b is provided at one end of the sun visor 31, and the gear shaft 32b is clamped in the clamping groove 31a in the radial direction and forms a circumferential stop with the clamping groove 31a. The fixed connection in this section does not refer to welding, but refers to the sun visor 31 being able to rotate with the gear shaft 32b, and not to form axial movement. In this way, the gear shaft 32b and the sun visor 31 can rotate together and the detachable connection between the gear shaft 32b and the sun visor 31 is achieved, which is convenient for subsequent maintenance and replacement.

[0053] In the example shown in the figure, the second surface coincides with the radial direction of the gear shaft 32b, that is, in this embodiment, the sun visor 31 rotates around the gear shaft 32b. Specifically, the axial direction of the gear shaft 32b is defined as the width direction of the sun visor 31, and the radial direction of the gear shaft 32b is defined as the length direction of the sun visor 31. The card slot 31a is located at the rear end of the sun visor 31 in the length direction of the sun visor 31. The front and rear here are set by the distance between the sun visor 31 and the opening 21 when the sun visor 31 is retracted into the accommodating cavity. In the length direction, the side closer to the opening 21 is the front, and the side farther away from the opening 21 is the rear.

[0054] In order to realize the linear movement of the sun visor 31 on the first surface, the sunshade assembly 3 also includes a second guide portion 33 provided on the other side of the sun visor 31 and a connecting block 34a guiding and matching the second guide portion 33. In the example shown in the figure, the first guide portion 32c and the second guide portion 33 are provided on both sides of the sun visor 31 along the width direction of the sun visor 31, wherein as mentioned above, the width and length direction of the sun visor 31 are referenced to the gear shaft 32b, and do not reflect the size of the sun visor 31 itself. In this embodiment, one end of the sun visor 31 in the width direction is matched with the second guide portion 33 through the connecting block 34a, and the other end is matched with the first guide portion 32c through the gear 32a, and in the width direction, a set gap is formed between the sun visor 31 itself and the first guide portion 32c and the second guide portion 33.

[0055] The second guide portion 33 extends along the length direction of the sun visor 31 and is parallel to the first guide portion 32c. The driving portion 32d is transmission-connected to the connecting block 34a to drive the connecting block 34a to move along the extending direction of the second guide portion 33; the connecting block 34a is connected to a connecting shaft 34b, and the connecting shaft 34b forms a stopper match with the gear shaft 32b in the radial direction.

[0056] The sun visor 31 can be pushed out and retracted through the guiding cooperation between the connecting block 34a and the second guide part 33. At the same time, the radial stop cooperation between the connecting shaft 34b and the gear shaft 32b enables the connecting shaft 34b and the gear shaft 32b to follow each other. In addition, such a layout reduces the space occupied by the sunshade assembly 3 in the accommodating cavity.

[0057] The connecting block 34a and the second guide part 33 can be a gear rack of the gear 32a or a worm gear. The second guide part 33 is a worm, which extends in the same direction as the first guide part 32c; the worm is connected to the output end of the driving part 32d by transmission; the connecting block 34a is a turbine sleeved and adapted to the worm. In this way, not only the guiding function but also the transmission function is realized, and the structure of the sunshade assembly 3 is further simplified.

[0058] The connection relationship between the connecting shaft 34b, the gear shaft 32b and the sun visor 31 is further explained below. The gear shaft 32b is a tubular structure, and the gear 32a is sleeved on the outside thereof. It can be clamped and welded, or the gear 32a is fixedly connected to the end of the gear shaft 32b. No specific limitation is made here, as long as the gear 32a can drive the gear shaft 32b.

[0059] Part of the connecting shaft 34b is inserted into the gear shaft 32b, and a gap is formed between the outer wall of the connecting shaft 34b and the inner wall of the gear shaft 32b. The connecting shaft 34b is not provided with one end of the connecting block 34a inserted into the gear shaft 32b, and it will not interfere with the adaptation of the connecting block 34a and the second guide part 33.

[0060] When moving in a straight line, the connecting shaft 34b and the gear shaft 32b form a stop or lock in the radial direction, so that the motor drives the worm (connecting shaft 34b), and the worm drives the turbine (connecting block 34a) to move along its straight line. While the connecting shaft 34b forms a linkage, it drives the gear shaft 32b to move in a straight line in the first plane.

[0061] The connecting block 34a is fixedly connected to the connecting shaft 34b, and the gear shaft 32b can rotate relative to the connecting shaft 34b. Therefore, when the gear shaft 32b rotates, the connecting shaft 34b and the connecting block 34a will not interfere with the rotation of the gear shaft 32b.

[0062] After the toothed portion is meshed with the first tooth groove 32c-2a, the connecting shaft 34b is unlocked from the gear shaft 32b or is always kept circumferentially adapted, that is, when the gear shaft 32b rotates, it will not rotate with the connecting shaft 34b. In this way, when the gear 32a rotates the plate, the connecting block 34a can keep moving in a straight line.

[0063] As long as the connecting shaft 34b and the connecting block 34a can be hinged, the connecting shaft 34b can rotate with the gear shaft 32b, and can rotate relative to the connecting block 34a.

[0064] In the above-mentioned embodiment, as a specific example, the first plane is set at an angle with the horizontal plane, and the opening 21 and the tooth groove 32c-2a are projected in the height direction. The projection range of the tooth groove 32c-2a falls within the projection range of the opening 21, thereby ensuring the smooth extension of the sun visor 31.

[0065] In another aspect of the present application, a vehicle control method is also provided, adapted to the aforementioned vehicle, wherein the sunshade assembly 3 further comprises a controller connected to the driving portion 32d by signal and a sunlight sensor connected to the controller by signal;

[0066] Control methods include:

[0067] Step 1: Detect the ambient light intensity. In this step, the ambient light intensity is detected by the sunlight sensor. Specifically, the relationship between the output voltage Vsensor of the sunlight sensor and the ambient light intensity Ienv is defined as a linear relationship, and the relationship between the two is expressed as:

[0068] Vsensor=k*Ienv+b

[0069] Where: Vsensor is the output voltage of the light sensor. Ienv is the ambient light intensity. k is the proportional constant, which indicates the sensitivity of the sunlight sensor. b is the offset, which indicates the zero offset of the sunlight sensor. In the actual design process, the values ​​of k and b can be determined through calibration experiments. The output voltage of the sensor can be measured under different known light intensities, and then k and b can be fitted using the least squares method.

[0070] In this embodiment, the range of ambient light intensity is the area between the front passenger and the front window. Step 2: Obtain the light intensity of the human eye. In this step, since the human eye has different sensitivities to light of different wavelengths, the spectral response function of the human eye V(λ) is used to describe it. The spectral distribution of ambient light is defined as I(λ), and the light intensity of the human eye I(eye) can be expressed as:

[0071]

[0072] Where: λ1 and λ2 are the start and end wavelengths of the spectrum, respectively. I(λ) is the spectral distribution of ambient light. V(λ) is the spectral response function of the human eye.

[0073] Step 3: When the current ambient light intensity is greater than or equal to the set threshold, the length of the sun visor 31 extending out of the top trim 2 is calculated based on the ambient light intensity and the light intensity of the human eye, wherein the length extending out of the top trim 2 refers to the length of the portion of the sun visor 31 located outside the top trim 2 in the length direction. The control driving unit 32d drives the sun visor 31 to extend into place. In this embodiment, the extended length of the sun visor 31 can be calculated according to the following formula:

[0074]

[0075] Wherein, Lmax is the maximum extension length of the sun visor 31. α, β are weight coefficients that can be modified according to local environment, weather and other factors.

[0076] Step 4, after the sun visor 31 extends out of the top trim, the ambient light intensity is detected again, and when the current ambient light intensity is greater than or equal to the set threshold, the position of the sun visor 31 is maintained;

[0077] When the current ambient light intensity is less than the set threshold, the driving part 32 d is controlled to move in the reverse direction to reset the sunshade 31 .

[0078] In this way, not only can the space occupied by the sun visor 31 in the vehicle cabin when not in operation be reduced, but also the intelligent control of the sun visor 31 can be achieved.

[0079] In other embodiments, a method for controlling the rotation angle of the sun visor 31 is also provided:

[0080] The method includes:

[0081] Step 51: Obtain the shielding area A of the sun visor 31 and the driver's field of view Aview according to the extension length L of the sun visor 31

[0082] Step 52 : Obtain a blocking ratio R of the sun visor 31 within the driver's field of view according to the blocking area A of the sun visor 31 and the driver's field of view area Aview.

[0083] The blocking ratio refers to the blocking ratio of the sun visor 31 within the driver's field of view, and is calculated according to the following formula: R = (A*COS(θ)) / Aview; wherein θ is the angle of the sun visor 31 relative to the driver's line of sight. Aview is the driver's field of view, which refers to the field of view that the driver can obtain from the front windshield 35. Usually, the central field of view is about 1000cm 2 Of course, those skilled in the art can also define it according to different car models.

[0084] In the above-mentioned embodiment, the shielding area A of the sun visor 31 refers to the shielding area of ​​the sun visor 31 at different extension lengths L, which can be calculated according to the following formula: A=W*L.

[0085] In the above technical solution, in order to prevent the driver's field of vision from being seriously affected, a safety threshold Rmax is set. When the blocking ratio R of the sun visor 31 is greater than or equal to Rmax, the control driving unit 32d drives the sun visor 31 to retract in the opposite direction to reduce the blocking ratio. Usually, the safety threshold Rmax can be set to 0.2, and the specific value can be adjusted according to actual tests and user feedback.

[0086] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A sunshade assembly for a vehicle, the vehicle comprising a roof sheet metal (1), a top decorative plate (2) and a sunshade assembly (3), the top decorative plate (2) and the roof sheet metal (1) jointly enclosing a receiving cavity, characterized in that: The sunshade assembly (3) is arranged in the accommodating cavity, and the sunshade assembly (3) comprises a driving part (32d) and a sunshade plate (31), wherein the driving part (32d) is used to drive the sunshade plate (31) to extend out of the accommodating cavity or to retract into the accommodating cavity.

2. The sunshade assembly according to claim 1, characterized in that: The invention also comprises a rotation driving assembly (32), wherein the rotation driving assembly (32) comprises a first guide portion (32c) arranged on one side of the sun visor (31) and a gear shaft (32b) provided with a gear (32a), wherein the gear (32a) has a plurality of teeth distributed circumferentially around the gear shaft (32b); The first guide portion (32c) is provided with a plurality of tooth grooves (32c-2a) in its extending direction which can mesh with the tooth portion in sequence; the plurality of tooth grooves (32c-2a) are distributed at intervals.

3. The sunshade assembly according to claim 2, characterized in that: One end of the sunshade (31) is provided with a clamping groove (31a) extending along the axial direction of the gear shaft (32b); the gear shaft (32b) is clamped in the clamping groove (31a) in the radial direction and forms a circumferential stop with the clamping groove (31a).

4. The sunshade assembly according to claim 2, characterized in that: It also includes a second guide portion (33) arranged on the other side of the sun visor (31) and a connecting block (34a) guided and matched with the second guide portion (33), and the driving portion (32d) is transmission-connected with the connecting block (34a) to drive the connecting block (34a) to move along the extension direction of the second guide portion (33); The connecting block (34a) is connected to a connecting shaft (34b), and the connecting shaft (34b) forms a stop fit with the gear shaft (32b) in the radial direction.

5. The sunshade assembly according to claim 4, characterized in that: The gear shaft (32b) is a tubular structure, and a portion of the connecting shaft (34b) is inserted into the gear shaft (32b).

6. The sunshade assembly according to claim 5, characterized in that: The connecting block (34a) is fixedly connected to the connecting shaft (34b), and the gear shaft (32b) is rotatable relative to the connecting shaft (34b).

7. The sunshade assembly according to claim 5, characterized in that: The connecting shaft (34b) is hinged to the connecting block (34a), and the connecting shaft (34b) can rotate with the gear shaft (32b) and can rotate relative to the connecting block (34a).

8. The sunshade assembly according to any one of claims 4 to 7, characterized in that: The second guide portion (33) is a worm, and the worm and the first guide portion (32c) extend in the same direction; the worm is drivingly connected to the output end of the driving portion (32d); and the connecting block (34a) is a turbine adapted to the worm.

9. The sunshade assembly according to claim 8, characterized in that: The first guide portion (32c) comprises a first rail section (32c-1) and a second rail section (32c-2) which are connected in the extension direction thereof, and a plurality of tooth grooves (32c-2a) are located in the second rail section (32c-2).

10. A vehicle, characterized in that: The vehicle comprises the sunshade assembly according to any one of claims 1 to 9; the vehicle further comprises a roof sheet metal (1), a top trim (2) and a sunshade assembly (3), wherein the top trim (2) and the roof sheet metal (1) together enclose and define the accommodating cavity.

11. A vehicle control method, characterized in that: For adapting to the vehicle according to claim 9, the sunshade assembly (3) further comprises a controller connected to the driving unit (32d) by signal and a sunlight sensor connected to the controller by signal; The control method comprises: Step 1, detecting the ambient light intensity; Step 2, obtaining the light intensity of human eyes; Step 3, when the ambient light intensity is greater than or equal to a set threshold, the length of the sun visor (31) extending out of the top decorative plate (2) is calculated according to the ambient light intensity and the light intensity of the human eye, and the driving unit (32d) is controlled to drive the sun visor (31) to extend into place; Step 4, after the sun visor (31) extends out of the top decorative plate (2), the ambient light intensity is detected again, and when the current ambient light intensity is greater than or equal to the set threshold, the position of the sun visor (31) is maintained; When the current ambient light intensity is less than the set threshold, the driving part (32d) is controlled to move in the reverse direction to reset the sunshade (31).

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