Air conditioner and air inlet cover plate assembly thereof

Abstract

The utility model provides an air conditioner and an air inlet cover plate assembly thereof. The air inlet cover plate assembly comprises a first cover plate, a second cover plate and a supporting rod. The first cover plate rotatably covers an air inlet of the air conditioner around a first axis. The first axis is fixedly arranged and is parallel to the air inlet face of the air inlet. The end, close to the first cover plate, of the second cover plate is hinged to the first cover plate around a second axis. One end of the supporting rod is rotationally connected to the air inlet around a fixedly-arranged third axis, and the other end of the supporting rod is hinged to the second cover plate around a fourth axis. The second axis, the third axis and the fourth axis are parallel to the first axis, and the distance between the third axis and the fourth axis is smaller than 1 / 2 of the sum of the distance between the first axis and the second axis and the distance between the second axis and the fourth axis, so that the first cover plate, the second cover plate and the supporting rod form a planar four-rod mechanism. According to the air inlet cover plate assembly, the air outlet cannot be completely exposed, and the effects of reducing potential safety hazards and improving the attractiveness of the air conditioner are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an air conditioner and an air inlet cover plate assembly thereof. Background Art

[0002] The air inlet of the air conditioner is usually provided with a cover. The cover is flipped open when the air conditioner is working to fully expose the air inlet; when the air conditioner is not working, it is flipped closed to cover the air inlet to prevent dust and foreign objects from entering. For air conditioners with the air inlet on the front side (for example, the air inlet is set on the front panel), the components inside the air conditioner will be completely exposed when the cover is opened. Users (such as children) may put their fingers into the air inlet, causing safety hazards. Utility Model Content

[0003] In view of the above problems, the present invention is proposed to provide an air conditioner and its air inlet cover assembly that overcome the above problems or at least partially solve the above problems, aiming to solve the problem that the cover of the air inlet of the existing air conditioner will completely open the air inlet.

[0004] Specifically, the utility model provides the following technical solutions:

[0005] An air inlet cover plate assembly of an air conditioner comprises a first cover plate, a second cover plate and a support rod.

[0006] The first cover plate is rotatably arranged around a first axis to cover the air inlet of the air conditioner. The first axis is fixedly arranged and parallel to the air inlet surface of the air inlet.

[0007] One end of the second cover plate close to the first cover plate is hinged to the first cover plate around a second axis.

[0008] One end of the support rod is rotatably connected to the air inlet around a fixed third axis, and the other end is hinged to the second cover plate around a fourth axis.

[0009] The second axis, the third axis, and the fourth axis are all parallel to the first axis, and the distance between the third axis and the fourth axis is less than 1 / 2 of the sum of the distance between the first axis and the second axis and the distance between the second axis and the fourth axis, so that the first cover plate, the second cover plate, and the support rod form a planar four-bar mechanism.

[0010] Optionally, the air inlet extends vertically.

[0011] When the first cover plate and the second cover plate close the air inlet, the first cover plate is located on the upper side of the second cover plate.

[0012] Optionally, the first axis is located at the rear side of the air inlet.

[0013] The third axis is located at the rear side of the air inlet and at the lower side of the first axis.

[0014] Optionally, the distance between the first axis and the front surface of the first cover plate is equal to the distance between the first axis and the air inlet surface.

[0015] Optionally, when the first cover plate and the second cover plate close the air inlet, the first axis is located below the front upper edge of the air inlet. The distance between the first axis and the front upper edge of the first cover plate is equal to the distance between the first axis and the front upper edge of the air inlet.

[0016] Optionally, when the first cover plate and the second cover plate close the air inlet, the first axis is located behind the second axis, and the third axis is located behind the fourth axis.

[0017] Optionally, the air inlet cover assembly further includes a driving rod, one end of which is fixedly connected to the back side of the first cover, and the other end of which is provided with a first rotating shaft coaxial with the first axis.

[0018] The first rotating shaft is transmission-connected with a motor, and the motor is fixedly connected to the air inlet.

[0019] Optionally, the distance between the second axis and the fourth axis is greater than 3 times the distance between the first axis and the second axis.

[0020] Optionally, a distance between the fourth axis and the lower end of the second cover plate is greater than a distance between the fourth axis and the third axis.

[0021] Optionally, a step structure recessed backwards is provided at the lower end of the first cover plate.

[0022] The distance between the second axis and the front surface of the first cover plate is equal to the distance between the second axis and the front surface of the second cover plate.

[0023] The distance between the second axis and the front upper edge of the step structure is equal to the distance between the second axis and the front upper edge of the second cover plate.

[0024] On the other hand, the utility model further provides an air conditioner, which includes an air inlet and the above-mentioned air inlet cover assembly.

[0025] The air conditioner and its air inlet cover assembly of the utility model are provided with a first cover plate, a second cover plate and a support rod which are hingedly connected in sequence at the air inlet, and form a planar four-bar mechanism together with the casing at the air inlet. The first cover plate and the support rod form a connecting rod, and the second cover plate forms a connecting rod. The first cover plate rotates outwardly from the air inlet surface around the first axis and / or the support rod rotates outwardly from the air inlet surface around the fourth axis, which can drive the second cover plate to move outwardly from the air inlet surface, thereby opening the air inlet. Since the distance between the third axis and the fourth axis is less than 1 / 2 of the sum of the distance between the first axis and the second axis and the distance between the second axis and the fourth axis, the fourth axis of the planar four-bar mechanism will not exceed the range of the air inlet during movement. That is to say, on the projection of the air inlet surface, at least part of the second cover plate is always on the air inlet, and the air outlet will not be completely exposed. The effects of reducing safety hazards and improving the aesthetics of the air conditioner are achieved.

[0026] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0028] Figure 1 is a schematic front view of an air inlet cover assembly of an air conditioner in a closed state according to an embodiment of the utility model;

[0029] Figure 2 is a schematic front view of an air inlet cover assembly of an air conditioner in an open state according to an embodiment of the utility model;

[0030] Figure 3 is a schematic structural diagram of an air inlet cover assembly of an air conditioner in an open state according to an embodiment of the utility model;

[0031] Figure 4 is a schematic cross-sectional view of an air inlet cover assembly of an air conditioner in an open state according to an embodiment of the utility model;

[0032] Figure 5 is a schematic cross-sectional view of an air inlet cover assembly of an air conditioner in a closed state according to an embodiment of the utility model;

[0033] Figure 6 is a schematic partial side view of an air inlet cover assembly according to an embodiment of the utility model;

[0034] Figure 7is a schematic partial structural diagram of an air inlet cover plate assembly according to an embodiment of the utility model;

[0035] Figure 8 is a schematic partial side view of an air inlet cover assembly according to an embodiment of the utility model;

[0036] Fig. 9 It is a schematic partial structural diagram of an air inlet cover plate assembly according to an embodiment of the utility model.

[0037] List of reference numerals:

[0038] 100, air inlet; 200, air inlet cover assembly; 210, first cover; 220, second cover; 230, support rod; 240, drive rod; 251, first axis; 252, second axis; 253, third axis; 254, fourth axis; 260, first rotating shaft; 270, motor; 280, step structure; 291, hinged ear; 292, second rotating shaft; 300, front panel. DETAILED DESCRIPTION

[0039] Refer to the following Figures 1 to 9 To describe the air conditioner and the air inlet cover assembly thereof of the embodiment of the utility model. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0040] Unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix", "couple" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; 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. A person skilled in the art should be able to understand the specific meanings of the above terms in the present utility model according to the specific circumstances.

[0041] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 utility model. In this specification, the schematic representation of the above terms does 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.

[0043] Figure 1 FIG. 1 is a schematic front view of an air inlet cover assembly of an air conditioner in a closed state according to an embodiment of the utility model. Figure 1 As shown, and refer to Figure 2-9 The embodiment of the utility model provides an air inlet cover plate assembly 200 of an air conditioner. The air inlet cover plate assembly 200 includes a first cover plate 210 , a second cover plate 220 and a support rod 230 .

[0044] The first cover plate 210 is rotatably disposed around a first axis 251 at the air inlet 100 of the air conditioner. The first axis 251 is fixedly disposed and parallel to the air inlet surface of the air inlet 100.

[0045] One end of the second cover plate 220 close to the first cover plate 210 is hinged to the first cover plate 210 around a second axis 252 .

[0046] One end of the support rod 230 is rotatably connected to the air inlet 100 around a fixed third axis 253 , and the other end is hinged to the second cover plate 220 around a fourth axis 254 .

[0047] The second axis 252, the third axis 253, and the fourth axis 254 are all parallel to the first axis 251, and the distance between the third axis 253 and the fourth axis 254 is less than 1 / 2 of the sum of the distance between the first axis 251 and the second axis 252 and the distance between the second axis 252 and the fourth axis 254, so that the first cover plate 210, the second cover plate 220 and the support rod 230 form a planar four-bar mechanism.

[0048] The air conditioner can be a split type air conditioner, an integrated type air conditioner, a cabinet type air conditioner, a wall mounted type air conditioner, an embedded type air conditioner, etc. The air inlet 100 can be arranged horizontally (usually for a wall mounted type air conditioner), vertically (usually for a cabinet type air conditioner), or tilted.

[0049] The air conditioner is usually provided with a casing, an air inlet 100 and an air outlet are provided on the casing, and an air duct is connected between the air inlet 100 and the air outlet.

[0050] For example, a cabinet air conditioner is used as an example for description. The air inlet 100 may be disposed on the front side of the housing, such as on the front panel 300. The air inlet 100 may be disposed vertically, the width along the horizontal direction may be smaller than the height along the vertical direction, and the air inlet surface may be the front surface of the air inlet 100.

[0051] The first cover plate 210, the second cover plate 220 and the support rod 230 are hingedly connected in sequence, and together with the housing at the air inlet 100, form a planar four-bar mechanism. The first cover plate 210 and the support rod 230 form a connecting rod, and the second cover plate 220 forms a connecting rod. The first axis 251, the second axis 252, the third axis 253 and the fourth axis 254 can all extend in the transverse direction. The first cover plate 210 rotates around the first axis 251 to the outside of the air inlet surface and / or the support rod 230 rotates around the fourth axis 254 to the outside of the air inlet surface, which can drive the second cover plate 220 to move out of the air inlet surface, thereby opening the air inlet 100.

[0052] It should be understood that since the first cover plate 210 and the support rod 230 are both connecting rods, at least one of the first cover plate 210 and the support rod 230 can be connected to a power source (such as a motor, an electric push rod, etc.) through transmission.

[0053] In this embodiment, the first cover plate 210 can be located on the upper side of the second cover plate 220, or can be located on the lower side of the second cover plate 220. When the air inlet cover plate assembly 200 is in the closed state, Figure 1 and Figure 4 As shown, the first cover plate 210 and the second cover plate 220 are arranged at the air inlet 100 to completely cover the air inlet 100. When the air inlet cover plate assembly 200 is in the open state, as shown in FIG. Figure 2-3As shown, the first cover plate 210 rotates outwards, and the second cover plate 220 moves outwards to the front side of the air inlet 100 to open the air inlet 100. When the air inlet 100 is opened, the first cover plate 210 and the second cover plate 220 are still in front of the air inlet 100, which can keep a certain shielding on the air inlet 100 to prevent the air inlet 100 from being exposed.

[0054] Furthermore, since the distance L8 between the third axis 253 and the fourth axis 254 is less than 1 / 2 of the sum of the distance L6 between the first axis 251 and the second axis 252 and the distance L5 between the second axis 252 and the fourth axis 254, that is, L8 < (L6 + L5) / 2, the fourth axis 254 will not exceed the range of the air inlet 100 during the movement of the planar four-bar mechanism. In other words, on the projection of the air inlet surface, at least part of the second cover plate 220 is always on the air inlet 100, and the air outlet will not be completely exposed. The effects of reducing safety hazards and improving the aesthetics of the air conditioner are achieved.

[0055] In some embodiments of the air inlet cover assembly of the utility model, such as Figure 4 As shown, the air inlet 100 extends vertically.

[0056] When the first cover plate 210 and the second cover plate 220 close the air inlet 100 , the first cover plate 210 is located on the upper side of the second cover plate 220 .

[0057] In this embodiment, the height of the air inlet 100 in the vertical direction is greater than its width in the horizontal direction, and is applicable to a cabinet-type air conditioner.

[0058] The first cover plate 210 is located on the upper side of the second cover plate 220. In this way, when the first cover plate 210 rotates upward so that the first cover plate 210 and the second cover plate 220 open the air inlet 100, the first cover plate 210 will be connected between the upper end of the second cover plate 220 and the air inlet 100, covering the gap between the upper end of the second cover plate 220 and the air inlet 100, preventing dust, condensed water, foreign matter, etc. on the upper side from falling downward between the second cover plate 220 and the air inlet 100 and being sucked into the air inlet 100.

[0059] In some embodiments of the air inlet cover assembly of the utility model, such as Figure 4 As shown, the first axis 251 is located at the rear side of the air inlet 100 .

[0060] The third axis 253 is located at the rear side of the air inlet 100 and at the lower side of the first axis 251 .

[0061] In this embodiment, the first axis 251 and the third axis 253 are both located at the rear side of the air inlet 100 and may be located in the air duct within the air inlet 100, so that the structure (such as a hinge shaft) that can rotate relative to the first axis 251 and the third axis 253 is located within the air inlet 100 and will not be exposed to the outside. This can prevent it from being damaged by accidental collisions on the one hand, and can also improve the appearance of the air conditioner on the other hand.

[0062] In some embodiments of the air inlet cover assembly of the utility model, such as Figure 4-6 As shown, the distance L1 between the first axis 251 and the front surface of the first cover plate 210 is equal to the distance L2 between the first axis 251 and the wind inlet surface.

[0063] In this way, when the first cover plate 210 is rotated downward to close the air inlet 100, the front surface of the first cover plate 210 is flush with the air inlet surface, so that the first cover plate 210 can be installed in a hidden manner, thereby improving the appearance of the air conditioner.

[0064] In some embodiments of the air inlet cover assembly of the utility model, such as Figure 4-6 As shown, when the first cover plate 210 and the second cover plate 220 close the air inlet 100, the first axis 251 is located below the front upper edge of the air inlet 100. The distance L3 between the first axis 251 and the front upper edge of the first cover plate 210 is equal to the distance L4 between the first axis 251 and the front upper edge of the air inlet 100.

[0065] In this embodiment, L3=L4, when the first cover plate 210 is rotated downward to close the air inlet 100, the front upper edge of the first cover plate 210 is aligned with the front upper edge of the air inlet 100. This makes the gap between the first cover plate 210 and the upper side of the air inlet 100 smaller, which can prevent dust, foreign matter, etc. from entering the air duct through the gap on the upper side of the first cover plate 210. It can also enable the first cover plate 210 to be installed in a hidden manner, improving the appearance of the air conditioner.

[0066] In some embodiments of the air inlet cover assembly of the utility model, such as Figure 4-6 As shown, L4=√2*L2.

[0067] In this embodiment, the distance between the plane where the front upper edge of the air inlet 100 is located and the plane where the first axis 251 is located is equal to L2. In this way, when the first cover plate 210 rotates upward to open the air inlet 100, the first cover plate 210 stops rotating when the front surface meets the front upper side edge of the air inlet 100. In other words, the front upper side edge of the air inlet 100 will limit the first cover plate 210 to prevent the first cover plate 210 from rotating excessively upward.

[0068] Since L4=√2*L2, the angle between the plane where the first axis and the front upper edge of the air inlet are located and the vertical plane is 45 degrees. After the first cover plate 210 is rotated upward to open the air inlet 100, the upper surface of the first cover plate 210 will be in a horizontal state. When the air conditioner is working, the first cover plate 210 is not easily seen by the user in front of the air inlet, forming a hidden installation effect.

[0069] In some embodiments of the air inlet cover assembly of the utility model, such as Figure 5 As shown, when the first cover plate 210 and the second cover plate 220 close the air inlet 100 , the first axis 251 is located at the rear side of the second axis 252 , and the third axis 253 is located at the rear side of the fourth axis 254 .

[0070] In this way, when the second cover plate 220 is driven to move forward and upward by the first cover plate 210 or the support rod 230 as the active connecting rod, it will not pass through the dead point of the planar four-bar mechanism, thereby avoiding mechanical failure.

[0071] In some embodiments of the air inlet cover assembly of the utility model, such as Figure 3 and Figure 6 As shown, the air inlet cover assembly 200 further includes a driving rod 240 , one end of which is fixedly connected to the back of the first cover 210 , and the other end of which is provided with a first rotating shaft 260 coaxial with the first axis 251 .

[0072] The first rotating shaft 260 is transmission-connected with a motor 270. The motor 270 is fixedly connected to the air inlet 100.

[0073] In this embodiment, the motor 270 can be fixedly mounted on a housing in the air inlet 100, on a wall of the air duct, etc. The output shaft of the motor 270 can be coaxially fixedly connected to the first rotating shaft 260 to drive the first rotating shaft 260 to rotate. The output shaft of the motor 270 can also be transmission-connected to the first rotating shaft 260 through a gear, a rack, a conveyor belt, etc. The motor 270 can be a servo motor 270, so that the rotation angle of the first rotating shaft 260 can be accurately controlled, thereby accurately controlling the opening and closing states of the first cover plate 210 and the second cover plate 220.

[0074] The driving rod 240 is fixedly connected to the back of the first cover plate 210, and is used to transmit the torque of the first rotating shaft 260 to the first cover plate 210, so as to drive the first cover plate 210 to rotate. The driving rod 240 can be in the shape of a rod or a plate. The driving rod 240 can be integrally injection molded with the first cover plate 210, or can be installed on the first cover plate 210 by welding, bonding, clamping, fastener connection, etc.

[0075] In some embodiments of the air inlet cover assembly of the utility model, such as Figure 4-5As shown, the distance L5 between the second axis 252 and the fourth axis 254 is greater than 3 times the distance L6 between the first axis 251 and the second axis 252 .

[0076] In this embodiment, L5 is much larger than L6, that is, the length of the second cover plate 220 is much larger than the length of the first cover plate 210. In this way, when the air inlet 100 is opened, the distance between the upper end of the second cover plate 220 and the front and rear of the air inlet 100 is relatively small, and the air inlet 100 will not be excessively exposed from the side. On the other hand, the distance L6 between the first axis 251 and the second axis 252 is relatively small, which can limit the range of the second cover plate 220 moving forward and upward, thereby limiting the range of the opening of the air inlet 100 and avoiding excessive exposure of the lower end of the air inlet 100.

[0077] In some embodiments of the air inlet cover assembly of the utility model, such as Figure 4-5 As shown, the distance L7 between the fourth axis 254 and the lower end of the second cover plate 220 is greater than the distance L8 between the fourth axis 254 and the third axis 253, that is, L7>L8.

[0078] In this embodiment, the distance L7 between the fourth axis 254 and the lower end of the second cover plate 220 is relatively large, so that when the second cover plate 220 opens the air inlet 100, the support rod 230 is always at the rear side of the second cover plate 220 and always at the upper side of the lower end of the second cover plate 220, and will not be exposed to the outside. On the one hand, it can prevent damage caused by accidental collision, and on the other hand, it can improve the appearance of the air conditioner.

[0079] In some embodiments of the air inlet cover assembly of the utility model, such as Figure 6-9 As shown, a step structure 280 recessed backwards is provided at the lower end of the first cover plate 210 .

[0080] A distance L9 between the second axis 252 and the front surface of the first cover plate 210 is equal to a distance L10 between the second axis 252 and the front surface of the second cover plate 220 .

[0081] A distance L11 between the second axis 252 and the front upper edge of the step structure 280 is equal to a distance L12 between the second axis 252 and the front upper edge of the second cover plate 220 .

[0082] The step structure 280 is used to accommodate the upper end of the second cover plate 220. A second rotating shaft 292 may be provided on the step structure 280, and a hinged ear 291 may be correspondingly provided on the second cover plate 220 to realize the hinged connection between the first cover plate 210 and the second cover plate 220. Of course, in other embodiments of the utility model, a hinged ear may be provided on the step structure 280, and a rotating shaft may be provided on the second cover plate 220.

[0083] In this embodiment, L9=L10, so that when the first cover plate 210 and the second cover plate 220 are in a state of closing the air inlet 100, the front surfaces of the first cover plate 210 and the second cover plate 220 are flush, so that no step is generated between the first cover plate 210 and the second cover plate 220, thereby improving the appearance of the air conditioner.

[0084] In this embodiment, L11=L12, so when the first cover plate 210 and the second cover plate 220 are in a state of closing the air inlet 100, the front upper edge of the first cover plate 210 and the front upper side edge of the step structure 280 will be aligned. This makes the gap between the upper side of the second cover plate 220 and the step structure 280 smaller, which can prevent dust, foreign matter, etc. from entering the air duct through the gap on the upper side of the second cover plate 220. It can also enable the second cover plate 220 to be installed in a hidden manner, improving the appearance of the air conditioner.

[0085] In some embodiments of the air conditioner of the utility model, as Figure 1 As shown, the air conditioner includes an air inlet 100 and an air inlet cover assembly 200 of any one of the above embodiments or a combination of embodiments.

[0086] The air conditioner may be provided with a casing, and the casing is provided with an air inlet 100. The air inlet cover assembly 200 is provided at the air inlet 100, and the first axis 251 and the second axis 252 are fixedly provided on the casing. In the air conditioner of this embodiment, the air inlet cover assembly 200 does not completely expose the air inlet 100 when the air inlet 100 is opened.

[0087] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in 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 inlet cover assembly for an air conditioner, characterized in that: include: A first cover plate, wherein the first cover plate is rotatably arranged around a first axis to cover the air inlet of the air conditioner; the first axis is fixedly arranged and parallel to the air inlet surface of the air inlet; a second cover plate, wherein one end of the second cover plate close to the first cover plate is hinged to the first cover plate around a second axis; A support rod, one end of which is rotatably connected to the air inlet around a fixed third axis, and the other end of which is hinged to the second cover plate around a fourth axis; The second axis, the third axis, and the fourth axis are all parallel to the first axis, and the distance between the third axis and the fourth axis is less than 1 / 2 of the sum of the distance between the first axis and the second axis and the distance between the second axis and the fourth axis, so that the first cover plate, the second cover plate, and the support rod form a planar four-bar mechanism.

2. The air inlet cover assembly according to claim 1, characterized in that: The air inlet extends vertically; When the first cover plate and the second cover plate close the air inlet, the first cover plate is located on the upper side of the second cover plate.

3. The air inlet cover assembly according to claim 2, characterized in that: The first axis is located at the rear side of the air inlet; The third axis is located at the rear side of the air inlet and at the lower side of the first axis.

4. The air inlet cover assembly according to claim 3, characterized in that: The distance between the first axis and the front surface of the first cover plate is equal to the distance between the first axis and the wind inlet surface; and / or When the first cover plate and the second cover plate close the air inlet, the first axis is located at the lower side of the front upper edge of the air inlet; the distance between the first axis and the front upper edge of the first cover plate is equal to the distance between the first axis and the front upper edge of the air inlet.

5. The air inlet cover assembly according to claim 3, characterized in that: When the first cover plate and the second cover plate close the air inlet, the first axis is located behind the second axis, and the third axis is located behind the fourth axis.

6. The air inlet cover assembly according to claim 3, characterized in that: The air inlet cover assembly further comprises a driving rod, one end of which is fixedly connected to the back of the first cover, and the other end of which is provided with a first rotating shaft coaxial with the first axis; The first rotating shaft is transmission-connected with a motor; the motor is fixedly connected to the air inlet.

7. The air inlet cover assembly according to claim 3, characterized in that: The distance between the second axis and the fourth axis is greater than 3 times the distance between the first axis and the second axis.

8. The air inlet cover assembly according to claim 3, characterized in that: The distance between the fourth axis and the lower end of the second cover plate is greater than the distance between the fourth axis and the third axis.

9. The air inlet cover assembly according to claim 3, characterized in that: The lower end of the first cover plate is provided with a step structure recessed backwards; The distance between the second axis and the front surface of the first cover plate is equal to the distance between the second axis and the front surface of the second cover plate; The distance between the second axis and the front upper edge of the step structure is equal to the distance between the second axis and the front upper edge of the second cover plate.

10. An air conditioner, characterized in that: It comprises an air inlet and an air inlet cover plate assembly as described in any one of claims 1 to 9.

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