Indoor unit of air conditioner

Abstract

The utility model provides an air conditioner indoor unit which comprises a shell, at least two air deflectors, at least two rotating plates, at least one linkage rod and a driving gear, and an air outlet is formed in the shell. The at least two air deflectors are rotatably arranged at the air outlet. Each rotating plate is provided with a rotating column, each rotating column is rotatably installed on the shell and connected with one air guide plate so as to drive the corresponding air guide plate to rotate, and each rotating plate is provided with teeth. The two ends of each linkage rod are rotationally arranged on the two rotating plates respectively, so that one rotating plate drives the other rotating plate to rotate through the linkage rod. The driving gear is rotatably installed on the shell and engaged with the teeth on one rotating plate. According to the air conditioner indoor unit, the problem that the transmission efficiency of a transmission structure of the air deflector is low can be solved, and the effect of improving the transmission efficiency of the transmission structure of the air deflector is achieved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and in particular to an indoor unit of an air conditioner. Background Technology

[0002] Air conditioners regulate and control parameters such as temperature, humidity, and airflow rate of indoor air to create a more comfortable indoor environment, making them indispensable household appliances. In some air conditioners, a planar four-bar linkage drives two or more air guide vanes to oscillate. This mechanism has two sets of mutually rotating linkages, with the links within each set being parallel to each other. However, the motion transmission path of these linkages is relatively long, which can lead to energy loss and reduce the transmission efficiency of the air guide vane's transmission structure. Furthermore, the individual components within the linkages have certain dimensional errors, which can cause significant cumulative errors during operation, further reducing transmission efficiency. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide an indoor unit of an air conditioner that overcomes or at least partially solves the above problems.

[0004] One objective of this invention is to solve the problem of low transmission efficiency in the transmission structure of the air guide plate, thereby improving the transmission efficiency of the air guide plate's transmission structure.

[0005] Another objective of this invention is to improve the firmness of the connection between the rotating plate and the air guide plate, so as to achieve the effect of the rotating plate driving the air guide plate to swing stably.

[0006] Specifically, this utility model provides an indoor unit for an air conditioner, comprising:

[0007] A housing, on which an air outlet is provided;

[0008] At least two air guide vanes, and at least two of the air guide vanes are rotatably disposed at the air outlet;

[0009] At least two rotating plates, each of the rotating plates having a rotating column, the rotating column being rotatably mounted on the housing and connected to one of the air guide plates to drive the corresponding air guide plate to rotate; each of the rotating plates is provided with teeth;

[0010] At least one linkage rod, with each linkage rod having its two ends rotatably mounted on two rotating plates, such that one of the rotating plates drives the other rotating plate to rotate via the linkage rod;

[0011] A drive gear, which is rotatably mounted on the housing and meshes with teeth on one of the rotating plates.

[0012] Optionally, each of the rotating plates further includes:

[0013] A motherboard is connected to the peripheral wall of the rotating column and is perpendicular to the rotating column; the rotating column is located on one side of the motherboard; the motherboard has an arc-shaped surface coaxial with the rotating column, and the teeth are disposed on the arc-shaped surface.

[0014] Optionally, the housing is provided with at least two first positioning structures, which are respectively arranged in correspondence with at least two rotating plates, and each first positioning structure is configured to limit the rotation stroke of one of the rotating plates;

[0015] Each of the first positioning structures includes two positioning plates spaced apart;

[0016] The motherboard also has a first positioning surface connected to one end of the peripheral wall of the rotating column and the arc-shaped surface, and a second positioning surface connected to the other end of the peripheral wall of the rotating column and the arc-shaped surface.

[0017] One of the positioning plates is configured to contact the first positioning surface for limiting, and the other positioning plate is configured to contact the second positioning surface for limiting.

[0018] Optionally, the housing includes a mounting plate and a flange connected to the edge of the mounting plate, the flange, the drive gear and the first positioning structure being located on one side of the mounting plate; at least two air guide plates being located on the other side of the mounting plate; the rotating column being mounted on the mounting plate; and the positioning plate being connected to the mounting plate and the flange.

[0019] Optionally, each of the linkage rods is rotatably connected to two corresponding rotating plates at both ends, and the plane containing the rotation axes at both ends of the linkage rod is a reference plane; the extension lines of both ends of each linkage rod intersect the reference plane.

[0020] Each of the linkages is a curved rod that arches away from the reference plane.

[0021] Optionally, each of the linkages includes:

[0022] The first section, one end of which is rotatably mounted on the rotating plate;

[0023] The second section, one end of which is rotatably mounted on another rotating plate;

[0024] The third section connects the other end of the first section and the other end of the second section;

[0025] The length of the first section is greater than the length of the second section, and the length of the second section is greater than the length of the third section; the rotating plate connected to the first section drives the rotating plate connected to the second section through the linkage rod.

[0026] Optionally, each end of the linkage rod is provided with a rotating cylinder or a rotating shaft, and the center of each end of the linkage rod is offset from the rotation axis at that end;

[0027] The centers of the two ends of the linkage are located on the same side of the reference plane, and the middle part of the extension direction of the linkage is located on the other side of the reference plane.

[0028] Optionally, each of the rotating columns is provided with a connecting block, and the corresponding air guide plate is provided with a connecting shaft. The connecting shaft is provided with a connecting hole in the middle, and the connecting block is inserted into the connecting hole.

[0029] An anti-detachment device is provided between the connecting block and the connecting shaft to prevent the connecting shaft from detaching from the connecting hole.

[0030] Optionally, the anti-detachment device includes:

[0031] An anti-detachment block, wherein the anti-detachment block is provided with an installation cavity;

[0032] An anti-detachment plate is disposed at one end of the mounting cavity. The anti-detachment plate is provided with a through hole for the insertion of the connecting block. The anti-detachment plate is configured to have a first rotational position and a second rotational position relative to the connecting block. In the first rotational position, the through hole is configured to allow the connecting block to pass through. In the second rotational position, the inner surface of the anti-detachment plate prevents the connecting block from disengaging from the connecting shaft.

[0033] A first snap-fit ​​structure is provided at the other end of the mounting cavity and engages with a second snap-fit ​​structure provided on the connecting shaft to prevent the connecting shaft from disengaging from the connecting block;

[0034] A second positioning structure is disposed between the connecting shaft and the anti-detachment block, at least at the second rotational position, preventing the connecting shaft from rotating relative to the anti-detachment block.

[0035] Optionally, the second snap-fit ​​structure includes:

[0036] A convex ring is disposed on the connecting shaft;

[0037] Multiple first protrusions are disposed on the convex ring and are evenly distributed along the circumferential direction of the convex ring;

[0038] The first snap-fit ​​structure includes a plurality of second protrusions disposed on the cavity wall of the mounting cavity; the second protrusions and the first protrusions engage.

[0039] The second positioning structure includes:

[0040] Multiple positioning protrusions extend along the axial direction of the connecting shaft and are disposed on the cavity wall of the mounting cavity;

[0041] Multiple positioning grooves extend along the axial direction of the connecting shaft, and each positioning groove is disposed on a first protrusion; the positioning protrusion is inserted into the positioning groove;

[0042] The number of the second protrusions is half the number of the first protrusions, and the number of the positioning protrusions is half the number of the positioning grooves;

[0043] The second protrusion and the positioning protrusion are alternately arranged along the circumferential direction of the protruding ring.

[0044] This invention relates to an indoor unit for an air conditioner, comprising a housing with an air outlet. At least two air guide plates are rotatably mounted at the air outlet, each connected to a rotating plate via a connecting post. Each rotating plate has an identical structure. The rotating plates are toothed, with one rotating plate meshing with a drive gear. A linkage rod connects the rotating plates, driving the other rotating plate to rotate. The rotation of the drive gear causes one rotating plate to rotate, and the connected rotating plate also rotates in the same direction. The rotating plate, via the connecting post, drives the air guide plates to rotate, thus achieving the oscillation of the air guide plates. The oscillation of the air guide plates is achieved through the meshing of the drive gear and the teeth on the rotating plates. Gear meshing provides high power transmission, high smoothness, and accurate and reliable motion transmission, thereby improving transmission efficiency. Furthermore, the oscillation of at least two air guide plates driven by a single drive gear is simple and compact, occupies little space, and saves costs.

[0045] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0046] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0047] Figure 1 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model;

[0048] Figure 2 This is a schematic structural diagram of the connection between the rotating plate, the linkage rod, and the driving gear according to an embodiment of the present invention;

[0049] Figure 3 This is a schematic structural diagram of a rotating plate according to an embodiment of the present utility model;

[0050] Figure 4 This is a schematic structural diagram of a linkage rod according to an embodiment of the present utility model;

[0051] Figure 5 This is a schematic structural diagram showing the connection between the rotating plate and the air guide plate according to an embodiment of the present invention;

[0052] Figure 6 This is a schematic structural diagram of a wind guide plate according to an embodiment of the present utility model;

[0053] Figure 7 This is a schematic structural diagram of an anti-detachment device according to an embodiment of the present invention;

[0054] Figure 8 This is a schematic structural diagram of the internal structure of an anti-detachment device according to an embodiment of the present invention. Detailed Implementation

[0055] The following reference Figures 1 to 8 This invention describes an indoor unit of an air conditioner according to an embodiment of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0056] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] Figure 1 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention, as shown below. Figure 1 As shown, and with reference Figures 2 to 8 This utility model provides an indoor unit 100 for an air conditioner, including a housing 10, at least two air guide vanes 30, at least two rotating plates 40, at least one linkage rod 50, and a drive gear 60. An air outlet 20 is provided on the housing 10. At least two air guide vanes 30 are rotatably disposed at the air outlet 20. Each rotating plate 40 has a rotating column 410, which is rotatably mounted on the housing 10 and connected to one air guide vane 30 to drive the corresponding air guide vane 30 to rotate. Each rotating plate 40 is provided with teeth 420. The two ends of each linkage rod 50 are rotatably disposed on two rotating plates 40, so that one rotating plate 40 drives the other rotating plate 40 to rotate via the linkage rod 50. The drive gear 60 is rotatably mounted on the housing 10 and meshes with the teeth 420 on one of the rotating plates 40.

[0060] In this embodiment, the indoor unit 100 of the air conditioner includes a housing 10, on which an air outlet 20 is provided. At least two air guide plates 30 are rotatably provided at the air outlet 20. Each air guide plate 30 is connected to a rotating plate 40 via a connecting post, and each rotating plate 40 has the same structure. The rotating plate 40 is provided with teeth 420. One rotating plate 40 meshes with a drive gear 60. A linkage rod 50 connects the rotating plates 40, thereby driving the other rotating plate 40 to rotate. When the drive gear 60 rotates, it drives one rotating plate 40 to rotate, and the rotating plate 40 connected to it also rotates in the same direction. The rotating plate 40 drives the air guide plate 30 to rotate via the connecting post, thereby realizing the oscillation of the air guide plate 30. The oscillation of the air guide plate 30 is achieved by the meshing of the drive gear 60 with the teeth 420 on the rotating plate 40. The gear meshing method transmits large power, has high smoothness of gear transmission, and transmits motion accurately and reliably, thereby improving transmission efficiency. Furthermore, the structure is simple and compact, taking up little space and saving costs, by driving at least two air guide plates 30 to swing through a drive gear 60.

[0061] In some embodiments of this utility model, such as Figure 3 As shown, each rotating plate 40 also includes a main plate 430, which is connected to the peripheral wall of the rotating column 410 and is perpendicular to the rotating column 410. The rotating column 410 is located on one side of the main plate 430. The main plate 430 has an arcuate surface 431 coaxial with the rotating column 410, and teeth 420 are disposed on the arcuate surface 431.

[0062] In this embodiment, the rotating plate 40 includes a main plate 430, a rotating column 410 perpendicular to the main plate 430, and teeth 420. The main plate 430 is connected to the peripheral wall of the rotating column 410. The main plate 430 has an arc-shaped surface 431, on which teeth 420 are provided. The axis of the arc-shaped surface 431 is coaxial with the rotating column 410, that is, the rotation center of the rotating plate 40 is coaxial with the rotating column 410. The teeth 420 mesh with the drive gear 60. The rotation of the drive gear 60 drives the rotating plate 40 to rotate, thereby driving the rotating column 410 to rotate, and thus causing the air guide plate 30 to rotate. The rotating plate 40 has a simple structure, and it does not need to be a whole circular plate, saving space and thus saving costs.

[0063] In some embodiments of this utility model, such as Figure 2As shown, the housing 10 is provided with at least two first positioning structures 70, each corresponding to one of the at least two rotating plates 40. Each first positioning structure 70 is configured to limit the rotation stroke of one rotating plate 40. Each first positioning structure 70 includes two spaced-apart positioning plates 710. The main board 430 also has a first positioning surface 432 connected to one end of the peripheral wall and the arcuate surface 431 of the rotating column 410, and a second positioning surface 433 connected to the other end of the peripheral wall and the arcuate surface 431 of the rotating column 410. One positioning plate 710 is configured to contact the first positioning surface 432 for limiting, and the other positioning plate 710 is configured to contact the second positioning surface 433 for limiting.

[0064] In this embodiment, a first positioning structure 70 is provided on the housing 10, which includes two spaced positioning plates 710. One side of the main board 430 is a first positioning surface 432, and the other side is a second positioning surface 433. The first positioning surface 432 connects one end of the rotating column 410 and the arc-shaped surface 431, and the second positioning surface 433 connects the other end of the rotating column 410 and the arc-shaped surface 431. One positioning plate 710 is located on the side of the rotating column 410 closest to the first positioning surface 432. When the rotating plate 40 rotates towards this positioning plate 710, the positioning plate 710 contacts and is limited by the first positioning surface 432. The other positioning plate 710 is located on the side of the rotating column 410 closest to the second positioning surface 433. When the rotating plate 40 rotates towards this positioning plate 710, the positioning plate 710 contacts and is limited by the second positioning surface 433. The positioning plate 710 restricts the rotation angle of the rotating plate 40, ensuring the stability of the meshing between the drive gear 60 and the teeth 420, thereby improving the structural stability of the rotating plate 40 and the stability of the swing of the air guide plate 30.

[0065] In some embodiments of this utility model, such as Figure 2 As shown, the housing 10 includes a mounting plate 110 and a retaining edge 120 connected to the edge of the mounting plate 110. The retaining edge 120, the drive gear 60, and the first positioning structure 70 are located on one side of the mounting plate 110. At least two air guide plates 30 are located on the other side of the mounting plate 110. A rotating column 410 is mounted on the mounting plate 110, and a positioning plate 710 is connected to the mounting plate 110 and the retaining edge 120.

[0066] In this embodiment, a mounting plate 110 is provided between the main board 430 and the air guide plate 30, and a connecting post passes through the mounting plate 110. A retaining edge 120 is provided on the edge of the mounting plate 110, and a first positioning structure 70 is connected to the mounting plate 110 and the retaining edge 120. The mounting plate 110 makes the installation of the rotating plate 40 more stable, improves the stability of the meshing between the rotating plate 40 and the drive gear 60, thereby improving the rotational stability of the rotating plate 40, and consequently improving the oscillation stability of the air guide plate 30.

[0067] Furthermore, the rotating plate 40 is disposed on the upper side of the air guide plate 30, the baffle 120, the drive gear 60 and the first positioning structure 70 are located on the upper side of the mounting plate 110, and at least two air guide plates 30 are located on the lower side of the mounting plate 110.

[0068] In some embodiments of this utility model, such as Figure 4 As shown, each linkage 50 is rotatably connected to two corresponding rotating plates 40 at both ends, and the plane containing the rotation axes at both ends of the linkage 50 is the reference plane 80. The extension lines of both ends of each linkage 50 intersect the reference plane 80. Each linkage 50 is a curved rod that arches away from the reference plane 80.

[0069] In this embodiment, the two ends of the linkage 50 are rotatably connected to two rotating plates 40. The plane containing the rotation axis of the linkage 50 is a reference plane. The linkage 50 arches away from the reference plane 80, and the extension lines of the two ends of the linkage 50 intersect the reference plane 80. When the rotating plate 40 rotates, it drives the linkage 50 to move, thereby driving the other rotating plate 40 at the other end of the linkage to rotate. When the linkage 50 drives the other rotating plate 40 to rotate, since the linkage 50 is a curved rod, the curved linkage 50 ensures that the transmission angle of the rotating plate 40 remains at a non-zero angle throughout the entire swing process, ensuring continuous operation of the mechanism and preventing the rotating plate 40 from jamming during rotation.

[0070] In some embodiments of this utility model, such as Figure 4 As shown, each linkage 50 includes a first segment 510, a second segment 520, and a third segment 530. One end of the first segment 510 is rotatably mounted on a rotating plate 40. One end of the second segment 520 is rotatably mounted on another rotating plate 40. The other ends of the first and second segments are connected. The length of the first segment 510 is greater than the length of the second segment 520, and the length of the second segment 520 is greater than the length of the third segment 530. The rotating plate 40 connected to the first segment 510 drives the rotating plate 40 connected to the second segment 520 via the linkage 50.

[0071] In this embodiment, the linkage includes a first section 510, a second section 520, and a third section 530, and the lengths of the first section 510, the second section 520, and the third section 530 are different. During the swinging process of the rotating plate 40, the transmission angle is always present. Even if the transmission angle is small at some special positions, the driving force can generate an effective rotational torque on the driven rotating plate 40, preventing the rotating plate 40 from jamming and maintaining the continuous and stable movement of the rotating plate 40, thereby maintaining the continuous and stable swinging of the air guide plate 30.

[0072] In some embodiments of this utility model, such as Figure 4 As shown, each end of the linkage 50 is provided with a rotating cylinder 540 or a rotating shaft, and the center of each end of the linkage 50 is offset from the rotation axis at that end. The centers of the two ends of the linkage 50 are on the same side of the reference plane 80, and the middle part of the extension direction of the linkage 50 is on the other side of the reference plane 80.

[0073] In this embodiment, the center of the end of the linkage 50 is offset from the axis of rotation, which means that the trajectory of the linkage 50 during movement is no longer a simple circular motion around the axis of rotation. When the linkage 50 is driven to move, due to the eccentric design of the end, the linkage 50 will generate a complex compound motion. In a traditional double-crank mechanism, when the driving crank and the driven crank are in certain specific positions, the transmission angle may be zero, causing the rotating plate 40 to have a dead point and jam. Because the center of the end of the linkage 50 is offset from the axis of rotation at that end, the complexity of its motion trajectory can avoid the situation where the transmission angle is zero, thereby effectively preventing the rotating plate 40 from jamming during rotation and improving the stability of the rotation of the rotating plate 40.

[0074] In some embodiments of this utility model, such as Figure 5 As shown, each rotating column 410 is provided with a connecting block 440, and the corresponding air guide plate 30 is provided with a connecting shaft 310. The connecting shaft 310 has a connecting hole 320 in the middle, and the connecting block 440 is inserted into the connecting hole 320. An anti-detachment device 90 is provided between the connecting block 440 and the connecting shaft 310 to prevent the connecting shaft 310 from detaching from the connecting hole 320.

[0075] In this embodiment, a connecting block 440 is provided on the rotating plate 40, and a connecting shaft 310 is provided on the air guide plate 30. A connecting hole 320 is provided on the connecting shaft 310, and an anti-detachment device 90 is provided between the connecting block 440 and the connecting shaft 310. When installing the rotating plate 40 and the air guide plate 30, the connecting block 440 is inserted into the connecting hole 320, and then the anti-detachment device 90 is installed between the connecting block 440 and the connecting shaft 310, thereby preventing the connecting shaft 310 from detaching from the connecting hole 320. The anti-detachment device 90 makes the connection between the rotating plate 40 and the air guide plate 30 more stable, thus allowing the rotating plate 40 to drive the air guide plate 30 to swing stably.

[0076] In some embodiments of this utility model, such as Figures 6 to 8As shown, the anti-detachment device 90 includes an anti-detachment block 910, an anti-detachment plate 930, a first snap-fit ​​structure 950, and a second positioning structure 960. The anti-detachment block 910 has an installation cavity 920. The anti-detachment plate 930 is disposed at one end of the installation cavity 920 and has a through hole 940 for inserting a connecting block 440. The anti-detachment plate 930 is configured to have a first rotational position and a second rotational position relative to the connecting block 440. In the first rotational position, the through hole 940 is configured to allow the connecting block 440 to pass through. In the second rotational position, the inner surface of the anti-detachment plate 930 prevents the connecting block 440 from detaching from the connecting shaft 310. The first snap-fit ​​structure 950 is disposed at the other end of the installation cavity 920 and engages with the second snap-fit ​​structure 330 disposed on the connecting shaft 310 to prevent the connecting shaft 310 from detaching from the connecting block 440. The second positioning structure 960 is disposed between the connecting shaft 310 and the anti-detachment block 910, and at least in the second rotation position, it prevents the connecting shaft 310 from rotating relative to the anti-detachment block 910.

[0077] In this embodiment, when installing the rotating plate 40 and the air guide plate 30, the anti-detachment block 910 is fitted onto the connecting shaft 310, and the connecting block 440 is inserted into the connecting hole 320 through the through hole 940. Rotating the anti-detachment block 910 causes the anti-detachment plate 930 to be in the second rotational position, so that the inner surface of the anti-detachment plate 930 contacts the connecting block 440. At this time, the first snap-fit ​​structure 950 is located at the end of the anti-detachment block 910 away from the anti-detachment plate 930, and the first snap-fit ​​structure 950 engages with the second snap-fit ​​structure 330 on the connecting shaft 310, preventing the connecting shaft 310 and the anti-detachment block 910 from moving axially along the connecting shaft 310. The second positioning structure 960 between the connecting shaft 310 and the anti-detachment block 910 prevents relative rotation between the connecting shaft 310 and the anti-detachment block 910. When disassembling the rotating plate 40 and the air guide plate 30, rotate the anti-detachment block 910 to bring the anti-detachment plate 930 to the first rotating position, and the connecting block 440 passes through the through hole 940 and detaches from the connecting hole 320. The installation and disassembly of the rotating plate 40 and the air guide plate 30 have a simple installation and fixing structure, and the installation and disassembly process is convenient, requiring only two steps, making it easy for personnel to operate.

[0078] Furthermore, through the snap-fit ​​of the first snap-fit ​​structure 950 and the second snap-fit ​​structure 330, and the second positioning structure 960, the connection between the rotating plate 40 and the air guide plate 30 is made more secure, thereby improving the stability of the rotation of the rotating plate 40 and the air guide plate 30, and improving the stability of the air outlet of the air conditioner.

[0079] In some embodiments of this utility model, such as Figures 6 to 8As shown, the second snap-fit ​​structure 330 includes a protruding ring 331 and a plurality of first protrusions 332. The protruding ring 331 is disposed on the connecting shaft 310. The plurality of first protrusions 332 are disposed on the protruding ring 331 and are evenly distributed along the circumferential direction of the protruding ring 331. The first snap-fit ​​structure 950 includes a plurality of second protrusions 951, which are disposed on the cavity wall of the mounting cavity 920. The second protrusions 951 and the first protrusions 332 are engaged. The second positioning structure 960 includes a plurality of positioning protrusions 961 and a plurality of positioning grooves 962. The plurality of positioning protrusions 961 extend along the axial direction of the connecting shaft 310 and are disposed on the cavity wall of the mounting cavity 920. The plurality of positioning grooves 962 extend along the axial direction of the connecting shaft 310, and each positioning groove 962 is disposed on a first protrusion 332. The positioning protrusions 961 are inserted into the positioning grooves 962. The number of second protrusions 951 is half the number of first protrusions 332, and the number of positioning protrusions 961 is half the number of positioning grooves 962. The second protrusions 951 and positioning protrusions 961 are alternately arranged along the circumferential direction of the protruding ring 331.

[0080] In this embodiment, the second snap-fit ​​structure 330 includes a convex ring 331 on the connecting shaft 310 and a first protrusion 332 on the peripheral wall of the convex ring 331. The first snap-fit ​​structure 950 includes a second protrusion 951 disposed on the end of the cavity wall of the mounting cavity 920 away from the anti-detachment plate 930. When the anti-detachment plate 930 is in the second rotational position, the first protrusion 332 is engaged with the second protrusion 951. The second positioning structure 960 includes a plurality of positioning protrusions 961 disposed on the peripheral wall of the mounting cavity 920 and a plurality of grooves disposed on the first protrusion 332, wherein the positioning protrusions 961 are inserted into the positioning grooves 962 for positioning. The number of the second protrusion 951 is half the number of the first protrusion 332, and the number of the positioning protrusion 961 is half the number of the positioning groove 962. The second positioning structure 960 has a simple structure. After rotation and connection or disconnection with the air guide plate 30, the anti-detachment block 910 is connected to the connecting shaft 310 to avoid loss of the anti-detachment block 910 and to make it easier to position the anti-detachment block 910.

[0081] For example, four first protrusions 332 are evenly arranged on the peripheral wall of the connecting shaft 310, and each protrusion is provided with a positioning groove 962. Two positioning protrusions 961 and two second protrusions 951 are provided on the cavity wall of the mounting cavity 920, with the two positioning protrusions 961 and the two second protrusions 951 arranged opposite each other.

[0082] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. An air conditioner indoor unit, characterized by comprising: include: A housing, on which an air outlet is provided; At least two air guide vanes, and at least two of the air guide vanes are rotatably disposed at the air outlet; At least two rotating plates, each of the rotating plates having a rotating column, the rotating column being rotatably mounted on the housing and connected to one of the air guide plates to drive the corresponding air guide plate to rotate; each of the rotating plates is provided with teeth; At least one linkage rod, with each linkage rod having its two ends rotatably mounted on two rotating plates, such that one of the rotating plates drives the other rotating plate to rotate via the linkage rod; A drive gear, which is rotatably mounted on the housing and meshes with teeth on one of the rotating plates.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, Each of the rotating plates also includes: A motherboard is connected to the peripheral wall of the rotating column and is perpendicular to the rotating column; the rotating column is located on one side of the motherboard; the motherboard has an arc-shaped surface coaxial with the rotating column, and the teeth are disposed on the arc-shaped surface.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, The housing is provided with at least two first positioning structures, which are arranged one-to-one with at least two rotating plates. Each first positioning structure is configured to limit the rotation stroke of one of the rotating plates. Each of the first positioning structures includes two positioning plates spaced apart; The motherboard also has a first positioning surface connected to one end of the peripheral wall of the rotating column and the arc-shaped surface, and a second positioning surface connected to the other end of the peripheral wall of the rotating column and the arc-shaped surface. One of the positioning plates is configured to contact the first positioning surface for limiting, and the other positioning plate is configured to contact the second positioning surface for limiting.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, The housing includes a mounting plate and a retaining edge connected to the edge of the mounting plate. The retaining edge, the drive gear, and the first positioning structure are located on one side of the mounting plate. At least two air guide plates are located on the other side of the mounting plate. The rotating column is mounted on the mounting plate. The positioning plate is connected to the mounting plate and the retaining edge.

5. The indoor unit of the air conditioner according to claim 1, characterized in that, Each of the linkage rods is rotatably connected to two corresponding rotating plates at both ends, and the plane containing the rotation axes at both ends of the linkage rod is a reference plane; the extension lines of both ends of each linkage rod intersect the reference plane. Each of the linkages is a curved rod that arches away from the reference plane.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, Each of the aforementioned linkages includes: The first section, one end of which is rotatably mounted on the rotating plate; The second section, one end of which is rotatably mounted on another rotating plate; The third section connects the other end of the first section and the other end of the second section; The length of the first section is greater than the length of the second section, and the length of the second section is greater than the length of the third section; the rotating plate connected to the first section drives the rotating plate connected to the second section through the linkage rod.

7. The indoor unit of the air conditioner according to claim 5, characterized in that, Each end of the linkage is provided with a rotating cylinder or a rotating shaft, and the center of each end of the linkage is offset from the axis of rotation at that end. The centers of the two ends of the linkage are located on the same side of the reference plane, and the middle part of the extension direction of the linkage is located on the other side of the reference plane.

8. The indoor unit of the air conditioner according to claim 1, characterized in that, Each of the rotating columns is provided with a connecting block, and the corresponding air guide plate is provided with a connecting shaft. The connecting shaft is provided with a connecting hole in the middle, and the connecting block is inserted into the connecting hole. An anti-detachment device is provided between the connecting block and the connecting shaft to prevent the connecting shaft from detaching from the connecting hole.

9. The indoor unit of the air conditioner according to claim 8, characterized in that, The anti-detachment device includes: An anti-detachment block, wherein the anti-detachment block is provided with an installation cavity; An anti-detachment plate is disposed at one end of the mounting cavity. The anti-detachment plate is provided with a through hole for the insertion of the connecting block. The anti-detachment plate is configured to have a first rotational position and a second rotational position relative to the connecting block. In the first rotational position, the through hole is configured to allow the connecting block to pass through. In the second rotational position, the inner surface of the anti-detachment plate prevents the connecting block from disengaging from the connecting shaft. A first snap-fit ​​structure is provided at the other end of the mounting cavity and engages with a second snap-fit ​​structure provided on the connecting shaft to prevent the connecting shaft from disengaging from the connecting block; A second positioning structure is disposed between the connecting shaft and the anti-detachment block, at least at the second rotational position, preventing the connecting shaft from rotating relative to the anti-detachment block.

10. The indoor unit of the air conditioner according to claim 9, characterized in that, The second snap-fit ​​structure includes: A convex ring is disposed on the connecting shaft; Multiple first protrusions are disposed on the convex ring and are evenly distributed along the circumferential direction of the convex ring; The first snap-fit ​​structure includes a plurality of second protrusions disposed on the cavity wall of the mounting cavity; the second protrusions and the first protrusions engage. The second positioning structure includes: Multiple positioning protrusions extend along the axial direction of the connecting shaft and are disposed on the cavity wall of the mounting cavity; Multiple positioning grooves extend along the axial direction of the connecting shaft, and each positioning groove is disposed on a first protrusion; the positioning protrusion is inserted into the positioning groove; The number of the second protrusions is half the number of the first protrusions, and the number of the positioning protrusions is half the number of the positioning grooves; The second protrusion and the positioning protrusion are alternately arranged along the circumferential direction of the protruding ring.

Images