Sweeping structure of automotive air conditioner

Abstract

This application relates to a sweeping structure of an automotive air conditioner, belonging to the technical field of automotive interiors. The sweeping structure includes a fixed frame, a sweeping grille, and a rotating shaft; the sweeping grille includes a wheel frame, a plurality of support ribs, a plurality of air guiding vanes, and a second central member; the planes where the plurality of support ribs are located intersect at the axis of the second through hole, dividing the cylindrical space inside the wheel frame into a plurality of regions; the first end and the second end of each air guiding vane are respectively connected to two adjacent support ribs; in at least one first region of the wheel frame, the air guiding vane is not parallel to the axis of the second through hole, and the angle between the first end of the air guiding vane and the connected support rib is greater than the angle between the second end of the air guiding vane and the connected support rib. By adopting this application, it is possible to automatically and continuously switch the wind direction without the need for a motor to drive, thereby simplifying the sweeping structure of the automotive air conditioner and reducing costs.

Description

Technical Field

[0001] This application relates to the technical field of automotive interiors, and particularly to a sweeping structure for an automotive air conditioner. Background Art

[0002] Nowadays, almost all automobiles are equipped with automotive air conditioners to adjust the temperature of the interior space.

[0003] An automotive air conditioner includes a refrigerator, a heater, an air duct, and a sweeping structure. The sweeping structure is an important component connecting the air duct and the interior space. The sweeping structure generally includes a fixed frame and a sweeping grille.

[0004] For current automotive air conditioners, a motor is mainly used to drive the sweeping grille in the sweeping structure to continuously switch the air direction, which has a complex structure and high cost. Summary of the Invention

[0005] An embodiment of this application provides a sweeping structure for an automotive air conditioner, which can solve the problem that a motor is required to drive the continuous switching of the air direction in a current automotive air conditioner, and the structure is complex. The technical solution is as follows:

[0006] A sweeping structure for an automotive air conditioner is provided. The sweeping structure includes a fixed frame 1, a sweeping grille 2, and a rotating shaft 3;

[0007] The fixed frame 1 includes an outer frame 11, a plurality of fixing members 12, and a first central member 13; the plurality of fixing members 12 all have a strip-shaped structure; one end of the fixing member 12 is connected to the outer frame 11, the other end of the fixing member 12 is connected to the first central member 13, the first central member 13 has a first through hole 13A, and the first central member 13 is located at the center of the outer frame 11;

[0008] The sweeping grille 2 includes a wheel frame 21, a plurality of support ribs 22, a plurality of air guiding vanes 23, and a second central member 24; the wheel frame 21 has an annular structure; the plurality of support ribs 22 each have a plate-like structure; one end of the support rib 22 is connected to the inner cylindrical surface of the wheel frame 21, and the other end of the support rib 22 is connected to the second central member 24. The second central member 24 has a second through hole 24A, and the second central member 24 is located at the center of the wheel frame 21. The planes where the plurality of support ribs 22 are located intersect at the axis of the second through hole 24A. The plurality of support ribs 22 divide the cylindrical space inside the wheel frame 21 into a plurality of regions; the air guiding vane 23 has a plate-like structure, and the first end and the second end of each air guiding vane 23 are respectively connected to two adjacent support ribs 22; in at least one first region of the wheel frame 21, the air guiding vane 23 is not parallel to the axis of the second through hole 24A, and the included angle between the first end of the air guiding vane 23 and the connected support rib 22 is greater than the included angle between the second end of the air guiding vane 23 and the connected support rib 22, wherein the first end of each air guiding vane 23 is located in the clockwise direction of the second end, or the first end of each air guiding vane 23 is located in the counterclockwise direction of the second end;

[0009] The rotating shaft 3 is located in the first through hole 13A and the second through hole 24A and is connected to the first central member 13 and the second central member 24.

[0010] In a possible implementation manner, in at least one second region of the wheel frame 21, the air guiding vane 23 is parallel to the axis of the second through hole 24A.

[0011] In a possible implementation manner, in the wheel frame 21, there are a plurality of the first regions and a plurality of the second regions, and the plurality of the first regions and the plurality of the second regions are distributed at intervals.

[0012] In a possible implementation manner, the at least one first region is all the regions included in the wheel frame 21.

[0013] In a possible implementation manner, the sweeping grille 2 has at least one wind shield 25, and the wind shield 25 is located in the second region.

[0014] Optionally, each wind shield 25 is located in one second region and fills the second region.

[0015] In a possible implementation manner, in each region of the wheel frame 21, the plurality of air guiding vanes 23 in the region are parallel to each other.

[0016] In a possible implementation, within each region of the wheel frame 21, the distance between the air guiding vane 23 near the inner cylindrical surface of the wheel frame 21 and the inner cylindrical surface of the wheel frame 21 is greater than the distance between two adjacent air guiding vanes 23.

[0017] In a possible implementation, the outer frame 11 of the fixed frame 1 has an annular structure.

[0018] In a possible implementation, the rotating shaft 3 has a limiting structure.

[0019] The technical solutions provided by the embodiments of the present application at least include the following beneficial effects:

[0020] The embodiments of the present application provide a sweeping structure for an automotive air conditioner. In this sweeping structure, multiple air guiding vanes 23 are not parallel to the axis of the second through hole 24A, and the angle between the first end of the air guiding vane 23 and the connected support rib 22 is greater than the angle between the second end of the air guiding vane 23 and the connected support rib 22. In this structure, after the air flow contacts the air sweeping grille 2 and then contacts the air guiding vane 23, the air flow will further flow in the direction of the first end of the air guiding vane 23, generating a force biased towards the first end on the air guiding vane 23. Under the action of this force, the air sweeping grille 2 will rotate around the axis of the second through hole 24A. Thus, it is not necessary to use a motor for driving, and the automatic and continuous switching of the air direction can be achieved only by the drive of the air flow. Furthermore, the sweeping structure of the automotive air conditioner can be simplified and the cost can be reduced.

[0021] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 is a schematic structural diagram of a sweeping structure of an automotive air conditioner shown in the embodiments of the present application;

[0024] Figure 2 is a schematic structural diagram of a sweeping structure of an automotive air conditioner shown in the embodiments of the present application;

[0025] Figure 3 is a schematic structural diagram of a sweeping structure of an automotive air conditioner shown in the embodiments of the present application;

[0026] Figure 4It is a schematic structural diagram of the rotating shaft of a sweeping structure shown in an embodiment of the present application.

[0027] Legend Explanation

[0028] 1. Fixed frame; 2. Sweeping grille; 3. Rotating shaft;

[0029] 11. Outer frame; 12. Fixing part; 13. First central part; 21. Wheel frame; 22. Support rib;

[0030] 23. Air guiding vane; 24. Second central part; 25. Windshield; 31. First shaft section;

[0031] 32. Second shaft section; 33. Third shaft section; 34. Limiting part;

[0032] 13A. First through hole; 24A. Second through hole; 341. First limiting part; 342. Second limiting part. Detailed Embodiment

[0033] To make the purpose, technical solution and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0034] With the development of the automotive interior technology field, automotive air conditioners have gradually become essential components in automobiles. An automotive air conditioner usually includes a refrigerating machine, an air duct and a sweeping structure.

[0035] An embodiment of the present application provides a sweeping structure for an automotive air conditioner, as shown in Figure 1 、 Figure 2 any one of them. The sweeping structure may include a fixed frame 1, a sweeping grille 2 and a rotating shaft 3. Among them, the fixed frame 1 may include an outer frame 11, a plurality of fixing parts 12 and a first central part 13, and the sweeping grille 2 may include a wheel frame 21, a plurality of support ribs 22, a plurality of air guiding vanes 23 and a second central part 24. The first central part 13 and the second central part 24 are respectively provided with a first through hole 13A and a second through hole 24A.

[0036] Next, each part of the sweeping structure will be introduced separately:

[0037] I. Fixed frame 1

[0038] The fixed frame 1 is a component that fixes the entire sweeping structure at the air duct opening of the automotive air conditioner. In the sweeping structure, since the sweeping grille 2 needs to rotate frequently, if the sweeping grille 2 is directly installed at the air duct opening of the automotive air conditioner, it may cause wear to the air duct opening. And as a part of the automotive body, if the air duct opening is worn, the cost of replacement is relatively high. Therefore, it is necessary to set the fixed frame 1 between the air duct opening and the sweeping grille 2. The existence of the fixed frame 1 can prevent the air duct opening from contacting the sweeping grille 2, thereby effectively protecting the air duct opening.

[0039] As Figure 1 、 Figure 2 or Figure 3 As shown in any of them, the fixing frame includes an outer frame 11, a plurality of fixing members 12 and a first central member 13. The plurality of fixing members 12 all have a strip structure. For each fixing member 12, one end of the fixing member 12 is connected to the outer frame 11, and the other end is connected to the first central member 13. The first central member 13 has a first through hole 13A, and the first central member 13 is located at the center of the outer frame 11, and the first through hole 13A is located at the center of the first central member 13.

[0040] Wherein:

[0041] The outer frame 11 may include an outer wall, an inner wall and two side walls.

[0042] The plurality of fixing members 12 may have a bar structure, one end of each fixing member 12 is connected to the same side wall of the outer frame 11, and the other end is connected to the first central member 13.

[0043] In this way, the plurality of fixing members 12 and the outer frame 11 can be in different planes, and then the space surrounded by the inner wall of the outer frame 11 can be vacated for placing the air-sweeping grille 2.

[0044] The first central member 13 may have various structures, such as a spherical structure, a cylindrical structure or a hexahedron structure, etc. There may be a first through hole 13A at the center of the first central member 13, the shape of the first through hole 13A may be circular, and there may be threads on the inner wall of the first through hole 13A for fixing the rotating shaft 3.

[0045] The fixing frame 1 may be an integrally formed structure or a non-integrally formed structure.

[0046] When the fixing frame 1 is a non-integrally formed structure, the connection manner between the outer frame 11, the plurality of fixing members 12 and the first central member 13 may be a sticky connection or a connection through a mortise and tenon structure. The integrally formed structure can improve the connection strength of the fixing frame 1. The non-integrally formed structure enables the fixing frame 1 to be detachably connected. When a certain part of the fixing frame 1 is damaged, this part can be removed and replaced without the need to replace the entire fixing frame 1, thereby reducing the maintenance cost.

[0047] II. Air-sweeping grille 2

[0048] The air-sweeping grille 2 is a component for switching the wind direction.

[0049] As Figure 1 、 Figure 2 or Figure 3As shown in any of the figures, the sweeping grille 2 includes a wheel frame 21, a plurality of support ribs 22, a plurality of air guiding vanes 23, and a second central member 24. For each support rib 22, one end of the support rib 22 is connected to the wheel frame 21, and the other end is connected to the second central member 24. The second central member 24 has a second through hole 24A, and the second through hole 24A is located at the center of the wheel frame 21 and at the center of the second central member 24. In this way, the axes of the second through hole 24A and the first through hole 13A can coincide.

[0050] Wherein:

[0051] The wheel frame 21 may have an annular structure. The annular wheel frame 21 includes an outer cylindrical surface, an inner cylindrical surface, and two side surfaces.

[0052] The plurality of support ribs 22 may have a plate-like structure. One end of each support rib 22 is connected to the inner cylindrical surface of the wheel frame 21, and the other end is connected to the second central member 24, and the plane where each support rib 22 is located intersects the axis of the second through hole 24A. In this way, the plurality of support ribs 22 can divide the cylindrical space inside the wheel frame 21 into multiple regions. For different regions, the positional relationship between the support ribs 22 and the air guiding vanes 23 may be different. Accordingly, the cylindrical space inside the wheel frame 21 can be divided into a first region and a second region.

[0053] As an example, as Figure 1 shown, when there are 4 support ribs 22 in the inner cylindrical surface of the wheel frame 21, the cylindrical space inside the wheel frame 21 can be divided into 4 regions. The positional relationship between the support ribs 22 and the air guiding vanes 23 in the upper right and lower left regions is different from the positional relationship between the support ribs 22 and the air guiding vanes 23 in the upper left and lower right regions. Accordingly, the upper right and lower left regions can be called the first region, and the upper left and lower right regions can be called the second region.

[0054] The plurality of air guiding vanes 23 may have a plate-like structure. The first end and the second end of each air guiding vane 23 are respectively connected to two adjacent support ribs 22. Inside the first region of the wheel frame 21, the plurality of air guiding vanes 23 are not parallel to the axis of the second through hole 24A, and the angle between the first end of the air guiding vane 23 and the connected support rib 22 is greater than the angle between the second end of the air guiding vane 23 and the connected support rib 22, wherein, the first end of each air guiding vane 23 is located in the clockwise direction of the second end, or, the first end of each air guiding vane 23 is located in the counterclockwise direction of the second end.

[0055] As an example, as Figure 1As shown, in the two first regions, the plurality of air guiding vanes 23 are not parallel to the axis of the second through hole 24A, that is, there can be a certain angle between the plane where the plurality of air guiding vanes 23 are located and the axis of the second through hole 24A, and this angle can be any angle between 30° and 60°. Moreover, in these two first regions, for any one air guiding vane 23, the included angle between the first end of the air guiding vane 23 and the connected support rib 22 is α, and the included angle between the second end of the air guiding vane 23 and the connected support rib 22 is β, and α > β. Looking at the axis of the second through hole 24A, the first end of each air guiding vane 23 is located in the counterclockwise direction of the second end.

[0056] In this way, when the air flow in the air duct contacts the air sweeping grille 2, the air flow will blow out from the blade gaps along the inclined direction of the air guiding vanes 23. During this process, since the air guiding vanes 23 in the first region are inclined, and the included angle α between the first end of the air guiding vane 23 and the support rib 22 is not equal to the included angle β between the second end and the other support rib 22. Therefore, when the air flow contacts the air guiding vane 23, the air flow will further flow in the direction of the first end of the air guiding vane 23, generating a force F biased towards the first end on the air guiding vane 23. Under the action of this force F, the air sweeping grille 2 will rotate around the axis of the second through hole 24A. Based on the rotation of the air sweeping grille 2, at different moments, the direction of the air flow passing through the air sweeping grille 2 will change. Furthermore, without the need for a motor to drive, the automatic and continuous switching of the wind direction can be achieved only by the air flow driving. This greatly simplifies the air sweeping structure of the automotive air conditioner and reduces the cost at the same time.

[0057] The second central member 24 can have various structures, such as a spherical structure, a cylindrical structure, or a hexahedral structure, etc. There can be a second through hole 24A at the center of the second central member 24, and the shape of the second through hole 24A can be circular.

[0058] Since the function of the second through hole 24A is to cooperate with the rotating shaft 3 to realize the rotation of the air sweeping grille 2. Therefore, there can be a bearing in the inner wall of the second through hole 24A, and the outer ring of the bearing is fixedly connected to the inner wall of the second through hole 24A, and the fixed connection method can be key connection, etc. The types of bearings can be ball bearings, tapered roller bearings, etc. The outer diameter of the bearing can be the same as the diameter size of the second through hole 24A, and the inner diameter of the bearing can be the same as the diameter size of the rotating shaft 3, so as to realize the tight fit between the air sweeping grille 2 and the rotating shaft 3.

[0059] The air sweeping grille 2 can be an integrally formed structure or a non-integrally formed structure.

[0060] When the air-sweeping grille 2 has a non-integrally formed structure, the connection between the wheel frame 21, the plurality of support ribs 22, the plurality of air guide vanes 23, and the second central member 24 can be a sticky connection or can be connected by a mortise and tenon structure. The integrally formed structure can enhance the connection strength of the air-sweeping grille 2. The non-integrally formed structure enables the air-sweeping grille 2 to be detachably connected. When a certain part of the air-sweeping grille 2 is damaged, this part can be removed and replaced, without the need to replace the entire air-sweeping grille 2, thereby reducing the maintenance cost.

[0061] III. Rotating shaft 3

[0062] The rotating shaft 3 is a component for connecting the fixed frame 1 and the air-sweeping grille 2. The rotating shaft 3 can include a first shaft section 31 and a second shaft section 32.

[0063] As Figure 4 shown in Figure 1 the figure, the shaft diameter of the first shaft section 31 can be equal to the shaft diameter of the second shaft section 32.

[0064] Among them:

[0065] The first shaft section 31 can be fixedly connected to the first central member 13. The fixed connection method can be an adhesive connection, a key connection, a threaded connection, etc. Correspondingly, the first shaft section 31 can have a keyway or an external thread that matches the internal thread in the first through hole 13A. When the first shaft section 31 is fixedly connected to the first central member 13, since the entire rotating shaft 3 is rigid, the entire rotating shaft 3 is also fixedly connected to the first central member 13.

[0066] The second shaft section 32 can be fixedly connected to the inner ring of the bearing in the second central member 24. The fixed connection method can be a key connection, etc.

[0067] In this way, the fixed frame 1 and the air-sweeping grille 2 can both be installed on the rotating shaft 3, thereby realizing the tight installation of the air-sweeping structure.

[0068] Some optional structural features of the air-sweeping structure are elaborated in detail below:

[0069] Structural feature one, in at least one second region of the wheel frame 21, the air guide vane 23 is parallel to the axis of the second through hole 24A.

[0070] As Figure 1 shown in the figure, the upper right and lower left regions are the first regions, and the upper left and lower right regions are called the second regions. In the second region, the air guide vane 23 is parallel to the axis of the second through hole 24A.

[0071] In this way, since within the first region, the air guiding vane 23 is not parallel to the axis of the second through hole 24A, there will be an angular difference between the air guiding vane 23 in the first region and the air guiding vane 23 in the second region. Therefore, when the air sweeping grille rotates under the action of the air flow, the air sweeping structure can not only continuously switch the wind direction within a certain fixed range, but also increase the angular range of wind direction switching. In the actual application of automotive air conditioners, the body shapes of different users may vary, and increasing the angular range of wind direction switching can meet the actual needs of users with different body shapes.

[0072] Structural feature two: In the wheel frame 21, it includes a plurality of first regions and a plurality of second regions, and the plurality of first regions and the plurality of second regions are distributed at intervals.

[0073] As Figure 1 shown, when there are 4 support ribs 22 in the inner cylindrical surface of the wheel frame 21, the cylindrical space within the wheel frame 21 can be divided into two first regions and two second regions, and the two first regions and the two second regions are distributed at intervals.

[0074] In this way, under the action of the air flow, the air sweeping grille 2 will rotate. During the process of the air sweeping grille 2 rotating one week, the angular range of wind direction switching will change 4 times. Similarly, with the plurality of first regions and the plurality of second regions distributed at intervals, when there are N support ribs 22 in the inner cylindrical surface of the wheel frame 21, the cylindrical space within the wheel frame 21 can be divided into N regions. During the process of the air sweeping grille 2 rotating one week, the angular range of wind direction switching will change N times, thereby being able to accelerate the frequency of wind direction switching.

[0075] Structural feature three: All regions of the wheel frame 21 are first regions.

[0076] As Figure 2 shown, within each region of the wheel frame 21, each air guiding vane 23 is not parallel to the axis of the second through hole 24A, and the included angle between the first end of each air guiding vane 23 and the connected support rib 22 is greater than the included angle between the second end of the air guiding vane 23 and the connected support rib 22, and the first end of each air guiding vane 23 is located in the counterclockwise direction of the second end.

[0077] In this way, under the action of the air flow, the air sweeping grille 2 will automatically rotate. During the rotation of the air sweeping grille 2, it can make the wind direction continuously switch within a certain fixed range.

[0078] Structural feature four: The air sweeping grille 2 has at least one wind deflector 25, and the wind deflector 25 is located within the second region.

[0079] As Figure 3 Refer to Figure 1 shown, there are no longer air guiding vanes 23 in the second region of the wheel frame 21, but there are wind deflectors 25.

[0080] The function of the wind deflector 25 is to block the air flow, thereby generating intermittent wind. Under the action of the air flow, the air-sweeping grille 2 will automatically rotate. When the wind deflector 25 rotates to a certain position, it blocks the air flow at this position from passing through the air duct opening, and when the wind deflector 25 rotates out of this position, it allows the air flow at this position to pass through the air duct opening. Therefore, the presence of the wind deflector 25 enables the air flow to intermittently pass through a specific position of the air duct opening, generating intermittent wind.

[0081] Optionally, each wind deflector 25 can be located within a second region and fill the second region.

[0082] As Figure 3 shown, each wind deflector 25 fills the entire space of the second region of a wheel frame 21.

[0083] In this way, since the wind deflector 25 fills the second region, during the processing of the air-sweeping grille 2, there is no need to perform corresponding processing on the second region, which can simplify the processing process.

[0084] In addition, each wind deflector 25 may not fill the second region. When processing the wind deflector 25, the wind deflector 25 can be set as a folding fan structure. One end of the folding fan structure is connected to the support rib 22, and the other end has a protrusion, enabling the user to pinch the protrusion and stretch the size of the wind deflector 25 according to actual needs. Thus, the user can adjust the range of the wind deflector 25 covering the second region according to needs. Furthermore, when the range of the wind deflector 25 covering the second region is different, the range of the intermittent wind can be controlled according to actual needs.

[0085] Structural feature five: within each region of the wheel frame 21, the multiple air guide vanes 23 within the region are parallel to each other.

[0086] As Figure 1 、 Figure 2 or Figure 3 any one shown, the multiple air guide vanes 23 within the same region of the wheel frame 21 are parallel to each other.

[0087] In this way, the processing difficulty of the air guide vanes 23 can be reduced, thereby improving the processing efficiency of the air guide vanes 23 and reducing the processing cost.

[0088] Structural feature six: within each region of the wheel frame 21, the distance between the air guide vane 23 close to the inner cylindrical surface of the wheel frame 21 and the inner cylindrical surface of the wheel frame 21 is greater than the distance between adjacent two air guide vanes 23.

[0089] As Figure 1 、 Figure 2 or Figure 3As shown in any of the figures, in each area of the wheel rim 21, there are 4 air guiding vanes 23. Among these 4 air guiding vanes 23, the air guiding vane 23 closest to the inner cylindrical surface of the wheel rim 21 (for the convenience of reference, hereinafter referred to as the first air guiding vane) has a distance from the inner cylindrical surface of the wheel rim 21 greater than the distance between any two adjacent air guiding vanes 23.

[0090] Since the air flow will surely come into contact with the air guiding vanes 23 during the process of entering the vehicle interior space from the air duct, and it is inevitable that impurities such as dust are mixed in the air flow. Therefore, during long-term use, impurities such as dust may adhere to the side of the air guiding vane 23 close to the air duct. At this time, the user can remove the impurities adhering to the side of the air guiding vane 23 close to the air duct through the space between the first air guiding vane and the inner cylindrical surface of the wheel rim 21. Therefore, the distance between the air guiding vane 23 closest to the inner cylindrical surface of the wheel rim 21 and the inner cylindrical surface of the wheel rim 21 is greater than the distance between any two adjacent air guiding vanes 23, which increases the convenience for the user to clean the air sweeping structure.

[0091] Structural feature seven: The outer frame 11 of the fixed frame 1 can have an annular structure.

[0092] As Figure 1 shown, the outer frame 11 has an annular structure. The inner wall and the outer wall of the outer frame 11 are both cylindrical surfaces, and the axes of the inner cylindrical surface and the outer cylindrical surface coincide.

[0093] In practical applications, the outer frame 11 can also have other structures. For example, the specific shape of the outer wall of the outer frame 11 can be set according to the shape of the air duct opening on the vehicle. When the shape of the air duct opening is circular, correspondingly, the outer wall of the outer frame 11 can be circular. When the shape of the air duct opening is rectangular, correspondingly, the outer wall of the outer frame 11 can be rectangular. Thus, the tight fixation of the outer frame 11 to the air duct opening is achieved. The shape of the inner wall of the outer frame 11 matches the shape of the air sweeping grille 2, and its specific shape can be circular.

[0094] Optionally, the outer wall of the outer frame 11 can have a convex structure that matches the groove of the air duct opening to install the fixed frame 1 in the air duct opening.

[0095] Structural feature eight: The rotating shaft 3 can have a limiting structure.

[0096] As Figure 4 referred to Figure 1 shown, the rotating shaft 3 can further include a third shaft section 33 and a limiting member 34. The limiting member 34 can include a first limiting member 341 and a second limiting member 342. The third shaft section 33 is connected to the second limiting member 342, and the position of the second limiting member 342 on the third shaft section 33 is adjustable. The adjustable manner can be a sliding connection with a large damping, a threaded connection, etc.

[0097] Among them:

[0098] The first limiting member 341 may have a cylindrical structure, and the diameter of the first limiting member 341 is greater than that of the first shaft section 31. Also, the first limiting member 341 is connected to the first shaft section 31 for limiting the fixed frame 1.

[0099] The second limiting member 342 may have a conical boss structure. The diameter of the smaller circular area in the conical boss is smaller than the diameter of the second through hole 24A for passing in and out of the second through hole 24A. There may be a through hole in the conical boss, and the axis of the through hole coincides with the axis of the conical boss. There may be a plurality of annular grooves or internal threads on the inner wall of the through hole.

[0100] The shaft diameter of the third shaft section 33 is smaller than that of the second shaft section 32, and the third shaft section 33 is located at one end of the second shaft section 32 away from the first shaft section 31 and is connected to the second shaft section 32. The shaft diameter of the third shaft section 33 may be the same as the inner diameter of the through hole of the second limiting member 342. Correspondingly, there may be a plurality of annular protrusions on the third shaft section 33 for achieving a relatively large-damping sliding connection with the second limiting member 342. Alternatively, there may be external threads on the third shaft section 33 that cooperate with the internal threads of the through hole of the second limiting member 342 for achieving a threaded connection with the second limiting member 342.

[0101] In this way, by moving or rotating the second limiting member 342, the distance that the second limiting member 342 enters the second through hole 24A can be controlled, thereby controlling the distance between the second limiting member 342 and the air-sweeping grille 2. Furthermore, by utilizing the change in the frictional force between the second limiting member 342 and the air-sweeping grille 2, the rotation speed of the air-sweeping grille 2 can be adjusted.

[0102] With the air-sweeping structure of the present application, since in this air-sweeping structure, a plurality of air-guiding vanes 23 are not parallel to the axis of the second through hole 24A, and the included angle between the first end of the air-guiding vane 23 and the connected support rib 22 is greater than the included angle between the second end of the air-guiding vane 23 and the connected support rib 22. Therefore, after the air flow contacts the air-sweeping grille 2, due to the special positional relationship between the support rib 22 and the air-guiding vane 23, after the air flow contacts the air-guiding vane 23, it will further flow in the direction of the first end of the air-guiding vane 23, generating a force that biases towards the first end on the air-guiding vane 23. Under the action of this force, the air-sweeping grille 2 will rotate around the axis of the second through hole 24A. Thus, it is not necessary to be driven by a motor, and only by the air flow driving, the automatic and continuous switching of the wind direction can be realized. Furthermore, the air-sweeping structure of the automotive air conditioner can be simplified and the cost can be reduced.

[0103] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A sweeping structure of an automotive air conditioner, characterized in that The air-sweeping structure includes a fixed frame (1), an air-sweeping grille (2), and a rotating shaft (3). The fixed frame (1) includes an outer frame (11), a plurality of fixing members (12), and a first central member (13); the plurality of fixing members (12) each have a strip structure; one end of the fixing member (12) is connected to the outer frame (11), the other end of the fixing member (12) is connected to the first central member (13), the first central member (13) has a first through hole (13A), and the first central member (13) is located at the center of the outer frame (11). The air-sweeping grille (2) includes a wheel frame (21), a plurality of support ribs (22), a plurality of air guide vanes (23), and a second central member (24); the wheel frame (21) has an annular structure; the plurality of support ribs (22) each have a plate structure; one end of the support rib (22) is connected to the inner cylindrical surface of the wheel frame (21), the other end of the support rib (22) is connected to the second central member (24), the second central member (24) has a second through hole (24A), the second central member (24) is located at the center of the wheel frame (21), the planes where the plurality of support ribs (22) are located intersect at the axis of the second through hole (24A), and the plurality of support ribs (22) divide the cylindrical space inside the wheel frame (21) into a plurality of regions; the air guide vane (23) has a plate structure, and the first end and the second end of each air guide vane (23) are respectively connected to two adjacent support ribs (22); in at least one first region of the wheel frame (21), the air guide vane (23) is not parallel to the axis of the second through hole (24A), and in at least one second region of the wheel frame (21), the air guide vane (23) is parallel to the axis of the second through hole (24A), the wheel frame (21) includes a plurality of the first regions and a plurality of the second regions, the plurality of the first regions and the plurality of the second regions are distributed at intervals, the included angle between the first end of the air guide vane (23) and the connected support rib (22) is greater than the included angle between the second end of the air guide vane (23) and the connected support rib (22), wherein, the first end of each air guide vane (23) is located in the clockwise direction of the second end, or the first end of each air guide vane (23) is located in the counterclockwise direction of the second end, the air-sweeping grille (2) has at least one wind baffle (25), and the wind baffle (25) is located in the second region. The rotating shaft (3) is located in the first through hole (13A) and the second through hole (24A), and is connected to the first central member (13) and the second central member (24).

2. The air-sweeping structure according to claim 1, characterized in that Each wind baffle (25) is located in a second region and fills the second region.

3. The air-sweeping structure according to claim 1 or 2, characterized in that In each region of the wheel frame (21), the plurality of air guide vanes (23) within the region are parallel to each other.

4. The air-sweeping structure according to claim 1, wherein In each region of the wheel rim (21), the distance between the air guiding vane (23) close to the inner cylindrical surface of the wheel rim (21) and the inner cylindrical surface of the wheel rim (21) is greater than the distance between two adjacent air guiding vanes (23).

5. The air-sweeping structure according to claim 1, wherein The outer frame (11) of the fixed frame (1) has an annular structure.

6. The air-sweeping structure according to claim 1, wherein The rotating shaft (3) has a limiting structure.

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