Automobile air outlet with multiple air outlet modes

Abstract

The application discloses a kind of automobile air outlet with multiple air outlet modes, comprising: shell assembly is provided with air outlet passage;Multiple first vane and second vane, in air outlet passage, around center line A circumferentially alternate arrangement, first vane is equipped with the gear with pivot, second vane is equipped with eccentric shaft deviating from its pivot, rotating member, by drive assembly driven can rotate around center line A, rotating member is circumferentially equipped with the alternate distribution of tooth portion and transmission groove, gear is transmission connection with tooth portion, to form continuous transmission, eccentric shaft is slidably connected with transmission groove, to form intermittent transmission, when the circumferential end of transmission groove and eccentric shaft contact and push its rotation, rotating member drives first vane and second vane swing in same direction, adjacent first vane and second vane between form spiral channel along center line A spiral extension, output spiral airflow, the present application has multiple air outlet modes, and simple and compact structure;The application relates to the technical field of passenger car air conditioning system.

Description

Technical Field

[0001] This invention relates to the field of passenger vehicle air conditioning system technology, and more specifically to an automotive air vent with multiple air outlet modes. Background Technology

[0002] Car air conditioning vents are interior components of a car, typically located in the driver's cabin or diagonally above the passenger seat. The vent's air duct is connected to a device that provides airflow. When airflow is needed, the device delivers airflow to the duct, and the airflow is discharged from the vent's outlet.

[0003] Existing circular air outlets only have conventional functions such as left-right and up-down airflow and damper closure, and do not have the function of enhancing the airflow, resulting in a poor user experience. Summary of the Invention

[0004] In view of the shortcomings and defects of the existing technology, the present invention provides an air outlet with multiple air outlet modes and a simple and compact structure.

[0005] A car air vent with multiple air outlet modes, including:

[0006] The housing assembly is provided with an air outlet duct extending along the centerline A;

[0007] Multiple first and second blades are arranged alternately around the center line A in the air outlet duct. Each of the first and second blades is rotatably connected to the housing assembly via a pivot, and the axis F of the pivot intersects the center line A.

[0008] The first blade is equipped with a gear coaxial with the rotating shaft, and the second blade is equipped with an eccentric shaft offset from its rotating shaft.

[0009] The rotating component, driven by a drive assembly, can rotate around center line A.

[0010] The rotating component has alternating teeth and transmission grooves distributed along its circumference.

[0011] The gears and toothed parts are connected to form a continuous transmission, while the eccentric shaft and the transmission groove are slidably fitted to form an intermittent transmission.

[0012] During the rotation of the rotating component:

[0013] When the circumferential end of the transmission groove is not in contact with the eccentric shaft, the second blade remains stationary, the rotating component reciprocates, driving the first blade to oscillate back and forth, so that the air outlet area defined by the second blade outputs disturbed airflow.

[0014] When the circumferential end of the transmission groove contacts the eccentric shaft and pushes it to rotate, the rotating component drives the first blade and the second blade to swing in the same direction. A spiral channel extending along the center line A is formed between adjacent first blades and second blades, and spiral airflow is output.

[0015] Compared with existing technologies, the present invention, employing the above structure, has the following advantages: it features both a natural wind mode and a gentle breeze mode.

[0016] In natural wind mode: the rotating component reciprocates within a preset rotation angle range.

[0017] When the circumferential end of the transmission groove is not in contact with the eccentric shaft, the second blade remains stationary.

[0018] The first blade is oscillating back and forth, which can output disturbed airflow within the air outlet area defined by the second blade. The airflow is continuously sheared and split by the first blade, making the output airflow similar to natural wind, thus achieving a natural wind mode that is gentle to the touch and free from mechanical regularity.

[0019] In breeze mode: The rotating component rotates in one direction until it contacts the eccentric shaft at the circumferential end of the transmission groove and drives it to rotate.

[0020] The rotating component drives the first and second blades to oscillate in the same direction. Adjacent first and second blades form a channel spirally extending along the centerline A. When the airflow passes through this channel, it generates an initial circumferential velocity component, creating a spiral airflow. This forms a stable, low-speed, continuously outward-diffusing vortex-like airflow field downstream of the outlet. The diameter of this airflow field is much larger than the outlet itself, gently agitating a large area of ​​surrounding air to achieve efficient energy exchange, providing a wide-coverage, non-directly blowing, gentle airflow.

[0021] Two airflow modes are available for users to choose from, to meet various usage scenarios and physical needs, resulting in a better user experience.

[0022] As an improvement of the present invention, the housing assembly includes a housing and a nozzle.

[0023] The outer shell is provided with a flow channel, and a spherical space is provided at the end of the flow channel.

[0024] The nozzle has a spherical outer periphery and is embedded in a spherical space.

[0025] A cover is provided inside the nozzle, and the outer wall of the cover and the inner wall of the nozzle define an air outlet channel with a circular cross-section.

[0026] As an improvement of the present invention, the rotating member is disposed inside the cover.

[0027] The inner end of the first blade shaft is inserted into the inner side of the cover, and the gear is fixed at its insertion end. The inner end of the second blade shaft is inserted into the inner side of the cover, and the eccentric shaft is fixed at its insertion end.

[0028] As an improvement of the present invention, the drive assembly is disposed on the housing and includes an actuator and a power shaft driven by the actuator and rotating along the center line A.

[0029] The power shaft extends parallel to the center line A, with one end extending into the inner hole of the rotating component.

[0030] The power shaft has a radially protruding transmission part on its outer periphery, and the inner wall of the rotating part has a groove for the transmission part to be embedded in.

[0031] As an improvement of the present invention, a spherical pair is provided between the power shaft and the inner hole. The rotating part can be deflected relative to the power shaft by the spherical pair, and the air outlet direction can be adjusted by the synchronous deflection of the cover, the first blade, the second blade and the nozzle.

[0032] As an improvement of the present invention, the outer wall of the cover and the inner wall of the nozzle are both tapered structures that gradually expand outward from front to back.

[0033] As an improvement of the present invention, the inner wall of the nozzle is provided with a plurality of first guide portions distributed in a ring at intervals, and the outer wall of the casing is provided with a plurality of second guide portions distributed in a ring at intervals.

[0034] The first guide section and the second guide section each extend spirally along the center line A, and the spiral directions are the same.

[0035] As an improvement of the present invention, when outputting the spiral airflow, the first blade and the second blade rotate until their outer ends tend to contact the first guide portion, and their inner ends tend to contact the second guide portion.

[0036] Furthermore, the angles between the first blade, the second blade, and the centerline A tend to be close to the helix angles of the first guide section and the second guide section.

[0037] As an improvement of the present invention, the eccentric shaft is provided with a slider.

[0038] When the end of the transmission groove is not in contact with the eccentric shaft, the slider forms a planar contact with the wall of the transmission groove to restrict the rotation of the second blade.

[0039] An clearance space is provided near the end of the transmission groove. When the slider is aligned with the clearance space, the end of the transmission groove contacts the eccentric shaft, which can drive the second blade to rotate.

[0040] As an improvement of the present invention, a torsion spring is sleeved on the rotating shaft of the second blade, one end of the torsion spring is fixed to the housing assembly, and the other end is fixed to the rotating shaft of the second blade.

[0041] The torsion spring is preloaded when the second blade rotates;

[0042] When the end of the transmission groove disengages from the eccentric shaft, the torsion spring releases its preload, driving the second blade to reset. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the structure of the present invention, and the diagram shows the position of the first blade rotating clockwise in natural wind mode.

[0044] Figure 2 This is a schematic diagram of the half-section structure of the present invention.

[0045] Figure 3 This is the invention Figure 2 A schematic diagram of the three-dimensional structure.

[0046] Figure 4 This is the invention Figure 3 A magnified schematic diagram of the structure at point G.

[0047] Figure 5 This is a schematic diagram of the nozzle of the present invention and the first blade, second blade, etc. installed on the nozzle.

[0048] Figure 6 This is a schematic diagram of the structure of the first blade, the second blade, the rotating component, and the power shaft of the present invention.

[0049] Figure 7 This is the invention Figure 6 Enlarged schematic diagram of the structure at point B.

[0050] Figure 8 This refers to the position of the first blade rotating counterclockwise in the natural wind mode of this invention.

[0051] Figure 9 This refers to the positional state of the first and second blades in the light breeze mode of this invention.

[0052] Figure 10 This is a partial view of the present invention.

[0053] Figure 11 This is the invention Figure 10 A schematic diagram of the cross-sectional structure along the CC direction is shown in the figure, which also illustrates the positional state between the eccentric shaft and the circumferential end of the transmission groove under natural wind mode.

[0054] Figure 12 This is the invention Figure 11 Enlarged schematic diagram of the structure at point D.

[0055] Figure 13 This is a schematic diagram showing the positional state between the eccentric shaft and the circumferential end of the transmission groove in the breeze mode of the present invention.

[0056] Figure 14 This is the invention Figure 13 Enlarged schematic diagram of the structure at point E in the middle.

[0057] The figure shows: 1. Housing assembly; 1.1. Outer shell; 1.11. Flow channel; 1.111. Spherical space; 1.2. Nozzle; 1.21. Air outlet channel; 1.22. First guide section; 2. First blade; 3. Second blade; 4. Gear; 5. Eccentric shaft; 5.1. Slider; 6. Rotating component; 6.1. Tooth; 6.2. Transmission groove; 6.21. Clearance space; 6.3. Inner hole; 6.31. Groove; 7. Actuator; 7.1. Output gear; 8. Power shaft; 8.1. Transmission section; 8.2. Input gear; 9. Spherical pair; 10. Cover; 10.1. Second guide section; 10.2. Control body; 11. Torsion spring. Detailed Implementation

[0058] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0059] Please see Figure 1 , Figure 2 , Figure 8 , Figure 9 , Figure 11 , Figure 12 , Figure 13 , Figure 14 As shown,

[0060] A car air vent with multiple air outlet modes, including:

[0061] The housing assembly 1 is provided with an air outlet duct 1.21 extending along the center line A;

[0062] Multiple first blades 2 and second blades 3 are arranged alternately around the center line A in the air outlet channel 1.21. Each of the first blades 2 and second blades 3 is rotatably connected to the housing assembly 1 via a rotating shaft, and the axis F of the rotating shaft intersects the center line A. In some embodiments, the axis F of the rotating shaft is perpendicular to the center line A to shorten the axial length of the device.

[0063] The first blade 2 is equipped with a gear 4 coaxial with the rotating shaft, and the second blade 3 is equipped with an eccentric shaft 5 offset from its rotating shaft.

[0064] Rotating component 6, driven by the drive assembly, can rotate around center line A.

[0065] The rotating component 6 has alternating teeth 6.1 and transmission grooves 6.2 distributed along its circumference.

[0066] The gear 4 meshes with the tooth 6.1 to form a continuous transmission, and the eccentric shaft 5 slides with the transmission groove 6.2 to form an intermittent transmission. In this application, the counterclockwise end of the transmission groove 6.2 is shown as the mating end with the eccentric shaft 5. In some embodiments, the clockwise end of the transmission groove 6.2 may also be used as the mating end with the eccentric shaft 5.

[0067] The rotating component 6 has a natural wind mode during rotation:

[0068] The rotating component 6 reciprocates within a preset rotation angle range.

[0069] During rotation, the circumferential end of the transmission groove 6.2 does not contact the eccentric shaft 5, or contacts it but does not drive the eccentric shaft 5 to rotate. The second blade 3 remains stationary. This position is the initial position of the second blade 3. Preferably, at this time, the main body of the second blade 3 is an extension parallel to the center line A to define the direct airflow area.

[0070] Because the gear 4 on the shaft of the first blade 2 meshes with the teeth 6.1 on the rotating part 6, the first blade 2 oscillates back and forth, and can output turbulent airflow within the air outlet area defined by the second blade 3.

[0071] Preferably, the drive assembly can control the rotating component 6 to perform non-periodic, random, minute oscillations via a program.

[0072] This causes the first blade 2 to oscillate slightly and randomly, without a periodic pattern. Instead of regularly sweeping the airflow, the first blade 2 oscillates continuously and subtly around a preset average angle with randomly varying frequencies (e.g., 0.1-2 Hz) and amplitudes (±3° to ±10°), thereby continuously shearing and splitting the airflow.

[0073] The speed and direction fluctuations of the output airflow are made to approximate the Fourier spectrum of natural wind in the frequency domain, thereby simulating the gentleness and randomness of wind in the open field or forest in terms of body sensation, and realizing a natural wind mode that is gentle in body sensation and free from mechanical regularity.

[0074] During rotation, the rotating component 6 also features a gentle breeze mode: the rotating component 6 rotates in a single direction until the circumferential end of the transmission groove 6.2 contacts the eccentric shaft 5 and pushes it to oscillate in the same direction as the first blade 2.

[0075] Furthermore, after the rotating component 6 stops rotating, the first blade 2 and the second blade 3 can be maintained at the angle after swinging. A channel extending spirally along the center line A is formed between adjacent first blades 2 and second blades 3. When the airflow passes through the channel, it generates an initial circumferential velocity component, forming a spiral airflow to create a stable, low-speed, and continuously outward-diffusing vortex-like airflow field downstream of the air outlet. The diameter of this airflow field is much larger than the air outlet itself, which can gently stir a large area of ​​surrounding air, achieving efficient energy exchange and providing a gentle airflow with wide coverage and no direct blowing.

[0076] Preferably, the first blade 2 and the second blade 3 swing at the same angle, so that the channel has a better effect on the airflow;

[0077] This application offers two airflow modes for users to choose from, in order to meet various usage scenarios and tactile needs, resulting in a better user experience.

[0078] In addition, this application uses only a rotating member 6 that rotates around the center line A to drive the first blade 2 to swing continuously using a continuous transmission mechanism composed of its teeth 6.1 and gear 4, and the second blade 3 to swing intermittently using an intermittent transmission mechanism composed of the transmission groove 6.2 and eccentric shaft 5, so that the air outlet has a natural wind mode and a light wind mode, which has the characteristics of simple structure, compactness and low cost.

[0079] Please see Figure 2 , Figure 3 As shown, housing assembly 1 includes a housing 1.1 and a nozzle 1.2.

[0080] The outer casing 1.1 is provided with a flow channel 1.11, and a spherical space 1.111 is provided at the tail end of the flow channel 1.11.

[0081] The nozzle 1.2 has a spherical outer periphery and is embedded in the spherical space 1.111 to reduce the axial length and lateral width of the device, making the structure more compact and aesthetically pleasing, and can be easily embedded in confined spaces such as car dashboards, center consoles or roofs.

[0082] A cover 10 is provided inside the nozzle 1.2. The outer wall of the cover 10 and the inner wall of the nozzle 1.2 define an air outlet channel 1.21 with a cross-section of a circle, so that the airflow is discharged in a 360° ring shape, with a large diffusion angle and a wider coverage area. The passenger's head and shoulders can be evenly exposed to the wind, which improves the user experience of the passengers in the vehicle.

[0083] In some embodiments, the outer end of the rotating shaft of each blade forms a rotating pair with the nozzle 1.2, so that each blade can rotate, thereby making the structural layout more reasonable.

[0084] Please see Figure 2 , Figure 5 , Figure 7As shown, the rotating component 6 is located inside the housing 10, and the teeth 6.1 and the transmission groove 6.2 are both located on the front side of the rotating component 6.

[0085] The inner end of the first blade 2's rotating shaft passes through the inner side of the cover 10, and a gear 4 is fixed at its insertion end. The inner end of the second blade 3's rotating shaft passes through the inner side of the cover 10, and an eccentric shaft 5 is fixed at its insertion end. The transmission mechanism adopts a compact arrangement and is located inside the cover 10 to avoid structural leakage and has a better aesthetic appearance.

[0086] Please see Figure 2 , Figure 3 , Figure 4 As shown, the drive assembly is mounted on the housing 1.1 and includes an actuator 7 and a power shaft 8 driven by the actuator 7 and rotating along the center line A.

[0087] Specifically, a fixing frame is provided inside the flow channel 1.11 of the outer casing 1.1, and the power shaft 8 is mounted on the fixing frame to be axially limited.

[0088] The drive shaft 8 is equipped with an input gear 8.2. The output shaft of the actuator 7 passes through the flow channel 1.11 and is equipped with an output gear 7.1. The output gear 7.1 meshes with the input gear 8.2. When the output gear 7.1 rotates, it drives the drive shaft 8 to rotate through the input gear 8.2.

[0089] The drive shaft 8 extends parallel to the center line A, with one end extending into the inner hole 6.3 of the rotating member 6. The outer circumference of the drive shaft 8 is provided with a radially protruding transmission part 8.1.

[0090] The inner hole 6.3 of the rotating component 6 has a groove 6.31 for the transmission part 8.1 to be inserted.

[0091] When the power shaft 8 rotates, the transmission part 8.1 abuts against the side wall of the groove 6.31 to achieve continuous torque transmission, thereby driving the rotating part 6 to rotate synchronously.

[0092] Please see Figure 2 , Figure 4 As shown, a spherical joint 9 is provided between the power shaft 8 and the inner hole 6.3. The rotating part 6 can be deflected relative to the power shaft 8 by means of the spherical joint 9.

[0093] In this application, the groove 6.31 is configured as a structure extending front and back, and the engagement position of the groove 6.31 and the transmission part 8.1 is located on the upper and lower sides of the rotating member 6. Therefore, the rotating member 6 can deflect left and right and up and down relative to the power shaft 8, and the transmission part 8.1 remains engaged with the groove 6.31 throughout the deflection process.

[0094] The cover 10 is sleeved on the rotating part 6 and is fixed relative to the nozzle 1.2 via the rotating shaft of the blade.

[0095] A rearwardly protruding control body 10.2 is provided at the center of the rear end of the cover 10. The user can apply a torque to offset the axis by the control body 10.2, which can cause the rotating part 6 to deflect relative to the power shaft 8. At the same time, the cover 10 drives the first blade 2, the second blade 3 and the nozzle 1.2 to deflect synchronously to adjust the air outlet direction. When deflecting left and right, the left and right air outlet angle can be adjusted. When deflecting up and down, the up and down air outlet angle can be adjusted, which enriches the functionality of the device and further enhances the user experience.

[0096] Since the transmission part 8.1 is always engaged with the slot 6.31, the device can be put into natural wind mode or light wind mode by rotating the rotating part 6 in any air outlet direction.

[0097] Please see Figure 2 As shown, the outer wall of the housing 10 and the inner wall of the nozzle 1.2 are both tapered structures that gradually expand outward from front to back, forming a horn-shaped outward-expanding air outlet channel 1.21. This gradually increases the cross-sectional area of ​​the air outlet channel 1.21, thereby reducing the airflow speed and achieving a gentler, wider-range, imperceptible air delivery, while effectively suppressing high-speed jet noise.

[0098] Please see Figure 2 , Figure 5 , Figure 8 , Figure 9 As shown, the inner wall of the nozzle 1.2 is provided with several first guide portions 1.22 distributed in a ring at intervals, and the outer wall of the cover 10 is provided with several second guide portions 10.1 distributed in a ring at intervals.

[0099] The first guide section 1.22 and the second guide section 10.1 each extend spirally along the center line A, and the spiral directions are the same;

[0100] In the light breeze mode, when the spiral airflow is output, the first blade 2 and the second blade 3 rotate until their outer ends tend to contact the first guide section 1.22 and their inner ends tend to contact the second guide section 10.1, reducing the gap between the blades and the inner wall of the nozzle 1.2 and the outer wall of the casing 10, so as to avoid airflow leakage and weakening of the air outlet effect;

[0101] Furthermore, at this time, the angles between the first blade 2, the second blade 3, and the centerline A tend to approach the helix angles of the first guide section 1.22 and the second guide section 10.1.

[0102] When the airflow passes through the channel between the first blade 2 and the second blade 3, the spiral groove formed between the first guide section 1.22 sorts and straightens the airflow near the outside, eliminates irregular turbulence, converts the tangential momentum of the airflow into static pressure, and guides the airflow to move along a more stable and consistent rotation direction, making the airflow more orderly.

[0103] The spiral groove formed between the second guide section 10.1 applies an additional tangential force to the airflow near the center, acting as a vortex generator to enhance and stabilize the vortex core. It also works in conjunction with the horn-shaped outward-expanding air outlet channel 1.21 to prevent the airflow from concentrating too much in the central area and forming the Coanda effect, which would affect the blowing and diffusion effect.

[0104] All of the above improvements are aimed at enhancing airflow and providing a better user experience.

[0105] Please see Figure 6 , Figure 7 , Figure 10 , Figure 11 , Figure 12 As shown, the eccentric shaft 5 is equipped with a slider 5.1, which is a rectangular structure and has a height greater than the diameter of the eccentric shaft 5.

[0106] During the rotation of the rotating part 6, when the end of the transmission groove 6.2 is not in contact with the eccentric shaft 5, the bottom wall of the slider 5.1 forms a planar contact with the bottom wall of the transmission groove 6.2 to restrict the rotation of the second blade 3 and keep the second blade 3 in the initial position.

[0107] Please see Figure 12 , Figure 13 , Figure 14 As shown, a clearance space 6.21 is provided on the bottom wall of the transmission groove 6.2 near the end of the groove 6.31. When the slider 5.1 is aligned with the clearance space 6.21, the bottom wall of the slider 5.1 disengages from the bottom wall of the transmission groove 6.2, thus releasing the restriction on the rotation of the second blade 3.

[0108] At this time, the end of the transmission groove 6.2 contacts the eccentric shaft 5, which can drive the second blade 3 to rotate.

[0109] Please see Figure 2 , Figure 6 As shown, a torsion spring 11 is sleeved on the rotating shaft of the second blade 3. One end of the torsion spring 11 is fixed to the inner wall of the nozzle 1.2 of the housing assembly 1, and the other end is fixed to the rotating shaft of the second blade 3.

[0110] When the second blade 3 rotates, the torsion spring 11 is preloaded;

[0111] When the end of the transmission groove 6.2 disengages from the eccentric shaft 5, the torsion spring 11 releases its preload, driving the second blade 3 back to its initial position, so that the device can operate stably and reliably.

[0112] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A car air vent with multiple air outlet modes, characterized in that, include: The housing assembly (1) is provided with an air outlet duct (1.21) extending along the centerline A. Multiple first blades (2) and second blades (3) are arranged alternately around the center line A in the air outlet channel (1.21). Each of the first blades (2) and second blades (3) is rotatably connected to the housing assembly (1) via a rotating shaft, and the axis F of the rotating shaft intersects the center line A. The first blade (2) is provided with a gear (4) coaxial with the rotating shaft, and the second blade (3) is provided with an eccentric shaft (5) offset from its rotating shaft. Rotating component (6), driven by the drive assembly, can rotate around center line A. The rotating component (6) has alternating teeth (6.1) and transmission grooves (6.2) along its circumference. The gear (4) is connected to the tooth section (6.1) to form a continuous transmission, and the eccentric shaft (5) is slidably engaged with the transmission groove (6.2) to form an intermittent transmission. During the rotation of the rotating component (6): When the circumferential end of the transmission groove (6.2) is not in contact with the eccentric shaft (5), the second blade (3) remains stationary, the rotating part (6) rotates back and forth, driving the first blade (2) to swing back and forth, so that the air outlet area defined by the second blade (3) outputs disturbed airflow; When the circumferential end of the transmission groove (6.2) contacts the eccentric shaft (5) and pushes it to rotate, the rotating component (6) drives the first blade (2) and the second blade (3) to swing in the same direction. A spiral channel is formed between the adjacent first blade (2) and second blade (3) along the center line A, and a spiral airflow is output.

2. A car air vent with multiple air outlet modes according to claim 1, characterized in that: The housing assembly (1) includes a housing (1.1) and a nozzle (1.2). The outer shell (1.1) is provided with a flow channel (1.11), and a spherical space (1.111) is provided at the tail end of the flow channel (1.11). The nozzle (1.2) has a spherical structure on its outer periphery and is embedded in a spherical space (1.111). A cover (10) is provided inside the nozzle (1.2), and an air outlet channel (1.21) with a circular cross-section is defined between the outer wall of the cover (10) and the inner wall of the nozzle (1.2).

3. A car air vent with multiple air outlet modes according to claim 2, characterized in that: The rotating component (6) is located inside the casing (10). The inner end of the first blade (2) shaft is inserted into the inner side of the cover (10), and the gear (4) is fixed at its insertion end. The inner end of the second blade (3) shaft is inserted into the inner side of the cover (10), and the eccentric shaft (5) is fixed at its insertion end.

4. A car air vent with multiple air outlet modes according to claim 2, characterized in that: The drive assembly is mounted on the housing (1.1) and includes an actuator (7) and a power shaft (8) driven by the actuator (7) and rotating along the center line A. The power shaft (8) extends parallel to the center line A and one end extends into the inner hole (6.3) of the rotating part (6). The power shaft (8) has a radially protruding transmission part (8.1) on its outer periphery, and the inner hole (6.3) of the rotating part (6) has a groove (6.31) for the transmission part (8.1) to be inserted.

5. A car air vent with multiple air outlet modes according to claim 4, characterized in that: A spherical pair (9) is provided between the power shaft (8) and the inner hole (6.3). The rotating part (6) can deflect relative to the power shaft (8) through the spherical pair (9), and deflect synchronously with the first blade (2), the second blade (3) and the nozzle (1.2) through the cover (10) to adjust the air outlet direction.

6. A car air vent with multiple air outlet modes according to claim 2, characterized in that: The outer wall of the cover (10) and the inner wall of the nozzle (1.2) are both tapered structures that gradually expand outward from front to back.

7. A car air vent with multiple air outlet modes according to claim 2, characterized in that: The inner wall of the nozzle (1.2) is provided with a plurality of first guide portions (1.22) distributed in an annular interval, and the outer wall of the cover (10) is provided with a plurality of second guide portions (10.1) distributed in an annular interval. The first guide section (1.22) and the second guide section (10.1) extend spirally along the center line A, and the spiral directions are the same.

8. A car air vent with multiple air outlet modes according to claim 7, characterized in that: When the spiral airflow is output, the first blade (2) and the second blade (3) rotate until their outer ends tend to contact the first guide section (1.22) and their inner ends tend to contact the second guide section (10.1). Furthermore, the angle between the first blade (2), the second blade (3) and the center line A tends to be close to the helix angle of the first guide section (1.22) and the second guide section (10.1).

9. A car air vent with multiple air outlet modes according to claim 1, characterized in that: The eccentric shaft (5) is equipped with a slider (5.1). When the end of the transmission groove (6.2) is not in contact with the eccentric shaft (5), the slider (5.1) forms a planar contact with the wall of the transmission groove (6.2) to restrict the rotation of the second blade (3). A clearance space (6.21) is provided near the end of the transmission groove (6.2). When the slider (5.1) is aligned with the clearance space (6.21), the end of the transmission groove (6.2) contacts the eccentric shaft (5) and drives the second blade (3) to rotate.

10. A car air vent with multiple air outlet modes according to claim 9, characterized in that: A torsion spring (11) is fitted on the shaft of the second blade (3). One end of the torsion spring (11) is fixed to the housing assembly (1), and the other end is fixed to the shaft of the second blade (3). When the second blade (3) rotates, the torsion spring (11) is preloaded; When the end of the transmission groove (6.2) disengages from the eccentric shaft (5), the torsion spring (11) releases its preload, driving the second blade (3) to reset.

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