Vehicle instrument panel air outlet pipe and vehicle

Abstract

The present invention discloses a vehicle dashboard air outlet duct and a car, belonging to the technical field of vehicle-mounted air conditioning air outlet structure, and solves the technical problem that the existing electric air sweeping mechanism has a complicated installation method and a high cost. The air outlet duct includes a main body, a first blade assembly, a first fan and a first gear-link mechanism. The main body is arranged at the air outlet of the air outlet duct, and the side wall of the main body is provided with at least one vent; the first blade assembly is arranged at the air outlet of the main body, the first blade assembly includes a first rotating shaft and a plurality of linked first blades, and one end of the first rotating shaft is connected to a first blade; the first fan is arranged at a vent, and the first fan is coaxially provided with a first drive shaft; one end of the first gear-link mechanism is connected to the first drive shaft, and the other end of the first gear-link mechanism is connected to the first rotating shaft; the car includes the above-mentioned air outlet duct. The present application can improve the installation efficiency of the air outlet duct and reduce the assembly cost of the car.

Description

Technical Field

[0001] The invention belongs to the technical field of air outlet structures of vehicle air conditioners, and in particular relates to an air outlet pipe of a vehicle dashboard and a vehicle. Background Art

[0002] In order to meet the air needs of passengers, most vehicles nowadays are equipped with electric air sweeping mechanisms to supply air to passengers in different positions. The electric air sweeping mechanisms mostly use motors to drive blades to sweep the air, which requires multiple wires to be installed on the dashboard to power the motor. At the same time, the vehicle also needs to integrate control systems and control devices related to the electric air sweeping mechanisms, which is relatively costly. Summary of the invention

[0003] The present application aims to at least to some extent solve the technical problem that the installation method of the existing electric air sweeping mechanism is complicated and costly. To this end, the present application provides a vehicle dashboard air outlet duct and a vehicle.

[0004] The technical solution of this application is as follows:

[0005] A vehicle instrument panel air outlet duct, comprising:

[0006] A main body, arranged at the air outlet of the air outlet duct, wherein the side wall of the main body is provided with at least one vent;

[0007] A first blade assembly is arranged at the air outlet of the main pipe body, the first blade assembly comprises a first rotating shaft and a plurality of linked first blades, one end of the first rotating shaft is connected to one of the first blades;

[0008] A first fan is disposed at one of the vents, wherein the first fan is coaxially provided with a first driving shaft;

[0009] A first gear-linkage mechanism, one end of which is connected to the first drive shaft, and the other end of which is connected to the other end of the first rotating shaft, wherein the first fan rotates to drive the plurality of first blades to swing back and forth.

[0010] In some embodiments, a side wall of the main pipe body is further provided with a side pipe body, and at least one of the ventilation openings is provided on the side wall of the side pipe body.

[0011] In some embodiments, the axis of the first fan is parallel to the air outlet direction of the main pipe, and the axis of the first rotating shaft is perpendicular to the axis of the first fan;

[0012] The first gear-linkage mechanism includes a first gear, a second gear, a third cam, a fourth cam and a second connecting rod. The first gear is coaxially arranged at one end of the first rotating shaft, the second gear is coaxially arranged at the first end of the first driving shaft, the second gear is a bevel gear, the third cam is provided with a gear meshing with the first gear, the fourth cam is provided with a bevel gear meshing with the second gear, and both ends of the second connecting rod are respectively hinged to the protrusions of the third cam and the protrusions of the fourth cam.

[0013] In some embodiments, a second blade is further disposed in the main pipe, and the second blade is provided with a second rotating shaft, and the second rotating shaft is perpendicular to the first rotating shaft;

[0014] The side wall of the main pipe is provided with two ventilation openings, the other ventilation opening is provided with a second fan, and the second fan is coaxially provided with a second driving shaft;

[0015] A second gear-linkage mechanism, one end of the second gear-linkage mechanism is connected to the second drive shaft, and the other end of the second gear-linkage mechanism is connected to the second rotating shaft, wherein the rotation of the second fan drives the second blade to swing back and forth.

[0016] In some embodiments, an axis of the second fan is parallel to an axis of the second rotating shaft.

[0017] In some embodiments, the air outlet duct further includes at least two ventilation opening and closing structures, and the ventilation opening and closing structures include:

[0018] A damper, the damper being rotatably disposed at the vent;

[0019] A toggle member is arranged on a panel at the air outlet of the main pipe;

[0020] A connecting rod mechanism connects the damper and the toggle member, wherein the toggle member is toggled forward and reverse to drive the damper to open and close the vent.

[0021] In some embodiments, the connecting rod mechanism includes a first cam, a second cam and a first connecting rod, the first cam is connected to the damper, the second cam is connected to the toggle member, the axis of the first cam and the axis of the second cam are parallel, and the two ends of the first connecting rod are respectively hinged to the protrusion of the first cam and the protrusion of the second cam.

[0022] In some embodiments, a through hole is provided on the panel, the shifting member is a roller, the roller is rotatably disposed in the through hole, and the second cam is coaxially disposed with the roller.

[0023] In some embodiments, a damper of the ventilation opening and closing structure is disposed in the main pipe to open and close the main pipe.

[0024] A car is provided with a dashboard, and the air outlet pipe is arranged on the dashboard.

[0025] The embodiments of the present application have at least the following beneficial effects:

[0026] It can be seen from the above technical scheme that the vehicle dashboard air outlet duct disclosed in the present application utilizes the wind discharged from the air outlet duct to drive the first fan to rotate, so that the rotation of the first fan can drive multiple first blades to swing back and forth, and utilizes the wind energy in the air outlet duct and realizes automatic blowing of the air outlet of the air outlet duct through a purely mechanical structure, so that the air outlet duct does not need to be equipped with electrical structures such as motors to realize the swing of the first blades, thereby reducing the number of wires on the dashboard, reducing the time spent on wiring during installation, and reducing material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic diagram of the three-dimensional structure of the air outlet duct in an embodiment of the present application is shown;

[0029] Figure 2 Shows Figure 1 A structural schematic diagram of the first blade assembly and the first gear linkage mechanism from another perspective;

[0030] Figure 3 Shows Figure 1 A schematic diagram of the structure of the second blade, the second fan and the second gear-link mechanism;

[0031] Figure 4 Shows Figure 1 Structural schematic diagram of the ventilation opening and closing structure;

[0032] Markings in the figure: 1-main body, 101-panel, 2-auxiliary body, 3-first blade assembly, 301-first blade, 302-first rotating shaft, 400-first fan, 401-first driving shaft, 5-first gear-linking mechanism, 501-first gear, 502-second gear, 503-third cam, 504-fourth cam, 505-second connecting rod, 601-second blade, 602-second rotating shaft, 700-second fan, 701-second driving shaft, 8-second gear-linking mechanism, 801-fifth cam, 802-sixth cam, 803-third connecting rod, 9-ventilation opening and closing structure, 901-throttle, 902-roller, 910-connecting rod mechanism, 911-first cam, 912-second cam, 913-first connecting rod. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0034] In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0035] Figure 1 A schematic diagram of the three-dimensional structure of the air outlet duct in an embodiment of the present application is shown; Figure 2 Shows Figure 1 A structural schematic diagram of the first blade assembly and the first gear linkage mechanism from another perspective; Figure 3 Shows Figure 1 A schematic diagram of the structure of the second blade, the second fan and the second gear-link mechanism; Figure 4 Shows Figure 1 Structural schematic diagram of the ventilation opening and closing structure.

[0036] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0037] like Figure 1-Figure 4 As shown, this embodiment provides a vehicle dashboard air outlet duct to reduce material costs. Figure 1 The air outlet duct includes a main body 1, a first blade assembly 3, a first fan 400 and a first gear connecting rod mechanism 5.

[0038] The main body 1 is arranged at the air outlet of the air outlet duct to replace the pipe head of the existing air outlet duct; the first blade assembly 3 is arranged at the air outlet of the main body 1, and the first blade assembly 3 includes a first rotating shaft 302 and a plurality of linked first blades 301, the first blades 301 can be rotatably mounted on the inner wall of the main body 1, and the gaps between adjacent first blades 301 are used to guide the wind discharged from the air outlet duct, and connecting rods with the same number of rows and columns are provided according to the arrangement of the first blades 301, and one end of the plurality of second blades 601 in the same row is respectively hinged to the connecting rod, and if there are more than two connecting rods, the two or more connecting rods are fixedly connected to ensure that the plurality of first blades 301 can swing synchronously. One end of the first rotating shaft 302 is connected to a first blade 301, specifically, the axis of the first rotating shaft 302 is parallel to the surface of the first blade 301, and the first rotating shaft 302 is arranged in the middle of one side of the first blade 301.

[0039] The side wall of the main body 1 is provided with at least one vent, the first fan 400 is arranged in a vent, the first fan 400 is coaxially provided with a first drive shaft 401, the first drive shaft 401 and the first fan 400 are fixedly connected by bolts or welding, so that when the first fan 400 rotates, the first drive shaft 401 will rotate synchronously with the first fan 400.

[0040] One end of the first gear-link mechanism 5 is connected to the first drive shaft 401, and the other end of the first gear-link mechanism 5 is connected to the first rotating shaft 302. A plurality of connecting rods, cams and gears can be set according to the opening position of the vent and the position of the first rotating shaft 302, so that when the wind discharged from the air outlet duct drives the first fan 400 to rotate, the rotation of the first fan 400 can drive the plurality of first blades 301 to swing back and forth, and the wind energy of the wind discharged from the air outlet duct is utilized to realize automatic blowing of the air discharged from the air outlet duct through a purely mechanical structure, so that the air outlet duct does not need to be provided with an electrical structure such as a motor to realize the automatic swing of the plurality of first blades 301, thereby reducing the number of wires at the air outlet duct of the dashboard, reducing the time spent on wiring during installation, and reducing material costs.

[0041] In order to better utilize the wind energy of the air outlet duct, a sub-tube body 2 is also provided on the side wall of the main body 1, and at least one ventilation port is provided on the side wall of the sub-tube body 2. The ventilation duct can be provided on the side wall of the sub-tube body 2 facing the air outlet of the air outlet duct. Furthermore, the angle between the side wall of the sub-tube body 2 facing away from the air outlet of the air outlet duct and the side wall of the main body 1 is an obtuse angle, so that the wind in the air outlet duct flows toward the sub-tube body 2, thereby providing stronger wind energy for the first fan 400.

[0042] Reference Figure 1, a vent is provided on the side wall of the auxiliary pipe body 2 facing the air outlet of the air outlet pipe. At this time, the axis of the first fan 400 installed at the vent is parallel to the air outlet direction of the main pipe body 1, and the first rotating shaft 302 is perpendicular to the axis of the first fan 400. Therefore, this embodiment requires the first gear linkage mechanism 5 to have a bevel gear to change the transmission direction of the first fan 400. Figure 2 The first gear linkage mechanism 5 includes a first gear 501, a second gear 502, a third cam 503, a fourth cam 504 and a second connecting rod 505. The first gear 501 is coaxially arranged at one end of the first rotating shaft 302, the second gear 502 is coaxially arranged at one end of the first driving shaft 401, the second gear 502 is a bevel gear, the third cam 503 is provided with a gear meshing with the first gear 501, the fourth cam 504 is provided with a bevel gear meshing with the second gear 502, and the two ends of the second connecting rod 505 are respectively hinged to the protrusions of the third cam 503 and the protrusions of the fourth cam 504, which can It is understood that when the wind in the air outlet duct drives the fan blades to rotate, the second gear 502 rotates and drives the fourth cam 504 to rotate, so that the protrusion of the fourth cam 504 rotates, but due to the existence of the second connecting rod 505, the third cam 503 does not rotate. Under the action of the fourth cam 504 and the second connecting rod 505, the third cam 503 only rotates back and forth, and the number of rotations each time does not exceed 1 circle. As a result, the gear on the third cam 503 will also drive the first gear 501 to rotate clockwise and counterclockwise, thereby realizing the clockwise rotation of the first rotating shaft 302, and then the first blade 301 swings to realize wind sweeping.

[0043] Considering the demand for air outlet comfort, refer to Figure 3 In this embodiment, a second blade 601 is further provided in the main body 1, and the second blade 601 is provided with a second rotating shaft 602. The second blade 601 is rotatably arranged in the main body 1 around the second rotating shaft 602, and the second rotating shaft 602 is perpendicular to the first rotating shaft 302. It can be understood that if the first blade 301 sweeps the air out of the air outlet pipe in the left and right directions, then the second blade 601 will sweep the air out of the air outlet pipe in the up and down directions, thereby increasing the turbulence intensity of the airflow and improving the comfort of the user.

[0044] When the first blade 301 is driven by the wind energy of the air outlet duct itself, two vents are provided on the side wall of the main body 1, one vent is provided with a first fan 400, and the other vent is provided with a second fan 700. It can be understood that in this embodiment, the second blade 601 is also driven by the wind energy of the air outlet duct itself.

[0045] Specifically, the second fan 700 is coaxially provided with a second drive shaft 701; a second gear-linkage mechanism 8 is provided, one end of the second gear-linkage mechanism 8 is connected to the second drive shaft 701, and the other end of the second gear-linkage mechanism 8 is connected to the second rotating shaft 602, wherein the rotation of the second fan 700 will drive the second blade 601 to swing back and forth.

[0046] Considering the volume of the air outlet pipe and the direction of the air flow, in this embodiment, two vents are arranged on two adjacent side walls of the auxiliary pipe body 2 to reasonably utilize wind energy. Figure 1 and 2 In this embodiment, the axis of the second fan 700 is parallel to the axis of the second rotating shaft 602, that is, there is no need to use a bevel gear to change the direction of transmission. Figure 3 The second gear linkage mechanism 8 includes a fifth cam 801, a sixth cam 802 and a third connecting rod 803. The fifth cam 801 is connected to the second drive shaft 701, the sixth cam 802 is connected to the second rotating shaft 602, and the two ends of the third connecting rod 803 are respectively hinged to the protrusions of the fifth cam 801 and the protrusions of the sixth cam 802. When the airflow drives the second fan 700 to rotate, the second drive shaft 701 rotates and drives the fifth cam 801 to rotate. Due to the existence of the third connecting rod 803, the sixth cam 802 will not rotate in the same direction but rotate clockwise and counterclockwise, and the number of revolutions each time is less than one circle, so that the second rotating shaft 602 rotates clockwise and counterclockwise, thereby realizing the swing of the second blade 601, and sweeping the airflow in the up and down directions.

[0047] The height of the second blade 601 is smaller than the height of the air outlet pipe to avoid the second blade 601 blocking the air outlet during the air sweeping process.

[0048] In view of the fact that passengers may not need to use the air outlet, in this embodiment, the air outlet duct also includes at least two ventilation opening and closing structures 9, one ventilation opening and closing structure 9 is used to open and close the air outlet duct, and at least one ventilation opening and closing structure 9 is used to open and close the vent, so as to facilitate passengers to operate whether air sweeping is needed.

[0049] The ventilation opening and closing structure 9 includes a damper 901 , a toggle member and a connecting rod mechanism 910 .

[0050] When the ventilation opening and closing structure 9 opens or closes the vent, the damper 901 can be rotatably arranged at the vent. It should be noted that there is a space between the damper 901 and the first fan 400 or the second fan 700 for the damper 901 to rotate. The toggle member is arranged on the panel 101 at the air outlet of the main body 1, and the connecting rod mechanism 910 connects the damper 901 and the toggle member. The damper 901 can be driven to open and close the vent by toggling the toggle member forward or backward. When the vent is arranged on the side wall of the auxiliary body 2 facing the air outlet of the air outlet pipe, the connecting rod mechanism 910 can be directly a straight rod, and the toggle member can be directly an end of the straight rod located on the dashboard, and the straight rod can be moved to drag the damper 901 to cover the vent.

[0051] Considering the convenience of operation, refer to Figure 4 The connecting rod mechanism 910 includes a first cam 911, a second cam 912 and a first connecting rod 913. The first cam 911 is connected to the damper 901, and the second cam 912 is connected to the toggle member. The axis of the first cam 911 is parallel to the axis of the second cam 912. The two ends of the first connecting rod 913 are respectively hinged to the protrusions of the first cam 911 and the protrusions of the second cam 912. It can be understood that when the toggle member drives the second cam 912 to rotate, one end of the first connecting rod 913 rotates with the second cam 912, and the other end of the first connecting rod 913 is pulled to drive the second cam 912 to rotate, so that the door body rotates, thereby opening or closing the vent.

[0052] Furthermore, a through hole is provided on the panel 101, and the driving member is a roller 902. The roller 902 can be rotatably set in the through hole, and the second cam 912 is coaxially arranged with the roller 902. The passenger can more accurately adjust the size of the door opening and closing vent by rotating the roller 902, and then adjust the swinging frequency of the first blade 301, so that the turbulence of the air outlet from the air duct can better meet the needs of different passengers.

[0053] When the ventilation opening and closing structure 9 is used to open and close the air outlet duct, the damper 901 of the through-hole opening and closing mechanism is arranged in the main body 1. When the plane where the damper 901 is located is perpendicular to the air outlet direction of the main body 1, the damper 901 just seals the main body 1, so that the airflow output by the air conditioner cannot flow out. In order to avoid the mutual influence of the connecting rod mechanisms 910 of multiple ventilation opening and closing structures 9, the connecting rod mechanisms 910 of different ventilation opening and closing structures 9 can be arranged on the outside of different sides of the main body 1. Furthermore, in order to maintain the state of the door body from being affected by the airflow, in this embodiment, the roller 902 is rotatably arranged on the panel 101 through the rotating shaft, and the friction between the rotating shaft and the panel 101 is greater than the thrust of the airflow on the door panel.

[0054] This embodiment also provides a car, which is provided with a dashboard, on which the above-mentioned vehicle dashboard air outlet duct is provided, and the panel 101 of the air outlet duct is provided on the dashboard. Based on the same inventive concept, the car provided by this embodiment also has the same beneficial effects as the vehicle dashboard air outlet duct.

[0055] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0057] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0058] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0061] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0062] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A vehicle dashboard air outlet duct, characterized in that: include: A main body is arranged at the air outlet of the air outlet duct, and the side wall of the main body is provided with at least one vent; the side wall of the main body is also provided with a secondary body, and at least one vent is provided on the side wall of the secondary body; A first blade assembly is arranged at the air outlet of the main pipe body, the first blade assembly comprises a first rotating shaft and a plurality of linked first blades, one end of the first rotating shaft is connected to one of the first blades; A first fan is disposed at one of the vents, and a first driving shaft is coaxially disposed on the first fan; an axis of the first fan is parallel to an air outlet direction of the main pipe, and an axis of the first rotating shaft is perpendicular to an axis of the first fan; a first gear-linkage mechanism, wherein one end of the first gear-linkage mechanism is connected to the first drive shaft, and the other end of the first gear-linkage mechanism is connected to the other end of the first rotating shaft, wherein the first fan rotates to drive the first blades to swing back and forth; A second blade is disposed in the main pipe, the second blade is provided with a second rotating shaft, and the second rotating shaft is perpendicular to the first rotating shaft; The side wall of the main body is provided with two vents, the other vent is provided with a second fan, the second fan is coaxially provided with a second driving shaft, and the axis of the second fan is parallel to the axis of the second rotating shaft; A second gear-linkage mechanism, one end of the second gear-linkage mechanism is connected to the second drive shaft, and the other end of the second gear-linkage mechanism is connected to the second rotating shaft, wherein the rotation of the second fan drives the second blade to swing back and forth.

2. The vehicle dashboard air outlet duct according to claim 1, characterized in that: The first gear-linkage mechanism includes a first gear, a second gear, a third cam, a fourth cam and a second connecting rod. The first gear is coaxially arranged at one end of the first rotating shaft, the second gear is coaxially arranged at the first end of the first driving shaft, the second gear is a bevel gear, the third cam is provided with a gear meshing with the first gear, the fourth cam is provided with a bevel gear meshing with the second gear, and both ends of the second connecting rod are respectively hinged to the protrusions of the third cam and the protrusions of the fourth cam.

3. The vehicle dashboard air outlet duct according to claim 1, characterized in that: The air outlet duct further comprises at least two ventilation opening and closing structures, and the ventilation opening and closing structures comprise: A damper, the damper being rotatably disposed at the vent; A toggle member is arranged on a panel at the air outlet of the main pipe; A connecting rod mechanism connects the damper and the toggle member, wherein the toggle member is toggled forward and reverse to drive the damper to open and close the vent.

4. The vehicle dashboard air outlet duct according to claim 3, characterized in that: The connecting rod mechanism includes a first cam, a second cam and a first connecting rod, the first cam is connected to the damper, the second cam is connected to the toggle member, the axis of the first cam is parallel to the axis of the second cam, and the two ends of the first connecting rod are respectively hinged to the protrusion of the first cam and the protrusion of the second cam.

5. The vehicle dashboard air outlet duct according to claim 4, characterized in that: The panel is provided with a through hole, the shifting member is a roller, the roller is rotatably arranged in the through hole, and the second cam is coaxially arranged with the roller.

6. The vehicle dashboard air outlet duct according to claim 3, characterized in that: A damper of the ventilation opening and closing structure is arranged in the main pipe to open and close the main pipe.

7. A car, characterized in that: A dashboard is provided, and an air outlet duct as described in any one of claims 1 to 6 is provided on the dashboard.

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