Indoor units and air conditioners

Abstract

This invention discloses an indoor unit and an air conditioner. The indoor unit includes a housing and a door assembly. The housing has an air outlet. The door assembly includes a mounting plate and a door. The mounting plate is disposed on the housing, and the door is movably disposed on the mounting plate to switch between a first position with the air outlet open and a second position with the air outlet closed. The door and the mounting plate are poweredly connected via a transmission structure. The mounting plate has a receiving groove, and the transmission structure is disposed within the receiving groove. The inner side of the door has a mounting portion extending toward the mounting plate, which extends into the receiving groove and is connected to a power output component of the transmission structure. Therefore, by providing a receiving groove on the mounting plate and connecting the mounting portion of the door to the power output component located within the receiving groove, the thickness of the door assembly can be reduced, the arrangement difficulty of the door assembly can be reduced, and the door assembly can meet the requirement of a slimmer indoor unit design.

Description

Technical Field

[0001] This invention relates to the field of household appliances, and in particular to an indoor unit and an air conditioner. Background Technology

[0002] In related technologies, an opening and closing door is provided on the air outlet of the indoor unit. The opening and closing door is mounted on the outer casing of the indoor unit and can be opened and closed via a transmission component. By controlling the movement of the opening and closing door relative to the outer casing, the opening and closing of the air outlet can be controlled.

[0003] However, during the opening and closing of the door, power needs to be transmitted through a transmission structure. The transmission structure occupies a large space, resulting in a large space occupation of the door opening and closing components, high layout difficulty, and difficulty in achieving a lightweight and thin design. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide an indoor unit whose door opening and closing assembly occupies less space and is easier to install.

[0005] The present invention further proposes an air conditioner using the above-described indoor unit.

[0006] An indoor unit according to a first aspect of the present invention includes: a housing and a door opening assembly. The housing has an air outlet. The door opening assembly includes: a mounting plate and a door. The mounting plate is disposed on the housing. The door is movably disposed on the mounting plate to switch between a first position with the air outlet open and a second position with the air outlet closed. The door is poweredly connected to the mounting plate via a transmission structure. The mounting plate has a receiving groove, and the transmission structure is disposed in the receiving groove. The inner side of the door has a mounting portion extending toward the mounting plate. The mounting portion extends into the receiving groove and is connected to a power output member of the transmission structure.

[0007] According to an embodiment of the present invention, by providing a receiving groove on the mounting plate and connecting the mounting part of the door switch to a power output component located in the receiving groove after extending into the receiving groove, the thickness of the door switch assembly can be reduced, the arrangement difficulty of the door switch assembly can be reduced, and the door switch assembly can meet the requirements of the indoor unit's slim design.

[0008] According to some embodiments of the present invention, the transmission structure is configured as a lead screw and nut transmission structure, wherein the lead screw is disposed on the mounting plate, the nut plate is connected to the switch door, and the axis of the lead screw is parallel to the movement direction of the switch door.

[0009] Furthermore, each end of the lead screw is provided with a bearing seat, a bearing is provided inside the bearing seat, the bearing is connected to the lead screw, and the bearing seat has a first mounting ear, which is connected to the mounting plate.

[0010] Furthermore, the first mounting ear is provided with a first limiting part and a first mounting hole, the mounting plate has a first mating part that positions and cooperates with the first limiting part and a first assembly part that cooperates with the first mounting hole, and the two first mounting holes on the two bearing seats are arranged adjacent to each other relative to the two first limiting parts.

[0011] According to some embodiments of the present invention, the indoor unit further includes: a power source, a fixed frame is provided in the receiving groove, the power source is disposed on the fixed frame, and the output shaft of the power source passes through the fixed frame to be poweredly connected to the lead screw through a coupling.

[0012] Furthermore, the coupling is located between the bearing and the power source.

[0013] According to some embodiments of the present invention, the nut plate includes: a plate body and a cylinder disposed on the centerline of the plate body, the cylinder body engaging with the lead screw, and the plate body being connected to the switch door.

[0014] Furthermore, the nut plate is provided with a second limiting part and a second mounting hole. The mounting part has a second mating part that cooperates with the second limiting part and a second assembly part that cooperates with the second mounting hole, and there are multiple second mounting holes.

[0015] In some embodiments, the housing includes a front panel defining the air outlet, and the front panel is connected to the mounting plate.

[0016] According to some embodiments of the present invention, an air outlet grille is further provided on the air outlet, and the mounting plate and the air outlet grille are arranged sequentially in the direction of movement of the door opening and closing, or the mounting plate and the air outlet grille are integrally formed.

[0017] Furthermore, the air outlet grille and the mounting plate are spaced apart in a direction perpendicular to the direction of movement.

[0018] In some embodiments, the indoor unit further includes a guide structure, through which the switch door and the mounting plate are guided in motion.

[0019] Furthermore, the guide structure is constructed as a guide rail slider structure, with the guide rail connected to the switch door and the slider connected to the mounting plate.

[0020] An air conditioner according to a second aspect of the present invention includes: the indoor unit described in the above embodiments.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of an indoor unit according to an embodiment of the present invention (the door is in the closed position);

[0024] Figure 2 This is another schematic diagram of the indoor unit according to an embodiment of the present invention (the door is in the open position);

[0025] Figure 3 This is a schematic diagram showing the disassembled indoor unit according to an embodiment of the present invention;

[0026] Figure 4 This is a partial cross-sectional schematic diagram of the indoor unit according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram illustrating the cooperation between the door opening / closing assembly, the guide rail slider structure, and the transmission structure according to an embodiment of the present invention.

[0028] Figure 6 This is a schematic diagram showing the opening and closing door assembly, guide rail slider structure, and transmission structure according to an embodiment of the present invention.

[0029] Figure 7 This is another schematic diagram showing the cooperation between the door opening and closing assembly, the guide rail slider structure, and the transmission structure according to an embodiment of the present invention.

[0030] Figure 8 This is a schematic diagram of the transmission structure according to an embodiment of the present invention;

[0031] Figure 9 This is a cross-sectional schematic diagram of the transmission structure according to an embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of a power output component according to an embodiment of the present invention;

[0033] Figure 11 This is a schematic diagram of a bearing housing according to an embodiment of the present invention;

[0034] Figure 12 This is a schematic diagram of the cooperation between the transmission structure and the mounting plate according to an embodiment of the present invention;

[0035] Figure 13 yes Figure 12 The center circle shows a magnified view of a portion of area A;

[0036] Figure 14 yes Figure 12 The center circle shows a magnified view of a portion of region B.

[0037] Figure 15 This is a schematic diagram of a mounting plate according to an embodiment of the present invention;

[0038] Figure 16 This is a schematic diagram of opening and closing a door according to an embodiment of the present invention;

[0039] Figure 17 It is based on Figure 16 The center circle shows a magnified view of a portion of region C.

[0040] Figure 18 This is a schematic diagram of the cooperation between the door opening / closing mechanism and the transmission structure according to an embodiment of the present invention;

[0041] Figure 19 yes Figure 18 The center circle shows a magnified view of a portion of area D;

[0042] Figure 20 This is a schematic diagram of the cooperation between the door opening and closing mechanism and the guide rail slider structure according to an embodiment of the present invention;

[0043] Figure 21 This is a schematic diagram of the guide rail slider structure at one angle according to an embodiment of the present invention;

[0044] Figure 22 This is a schematic diagram of the guide rail slider structure from another angle according to an embodiment of the present invention;

[0045] Figure 23 This is a schematic diagram of a guide rail at one angle according to an embodiment of the present invention;

[0046] Figure 24 This is a schematic diagram of the guide rail from another angle according to an embodiment of the present invention;

[0047] Figure 25 This is a schematic diagram of an angle of the slider according to an embodiment of the present invention;

[0048] Figure 26 This is a schematic diagram of the slider at another angle according to an embodiment of the present invention;

[0049] Figure 27 yes Figure 20 The center circle shows a magnified view of a portion of region E.

[0050] Figure 28This is a schematic diagram of the cooperation between the mounting plate and the guide rail slider structure according to an embodiment of the present invention;

[0051] Figure 29 This is a schematic diagram of the cooperation between the first positioning part and the first positioning hole in an embodiment of the present invention.

[0052] Figure label:

[0053] Indoor unit 100,

[0054] 10. Outer shell, 11. Front panel, 111. Air vent, 12. Back panel, 13. Base plate.

[0055] The components include: a door opening / closing assembly 20, a mounting plate 21, a receiving groove 211, a first mating part 212, a first assembly part 213, a fixing bracket 214, a second positioning hole 215, a second connecting hole 216, a door opening / closing assembly 22, a first positioning part 221, a first column 2211, a second column 2212, a first connecting part 222, a mounting part 223, a second mating part 224, a second assembly part 225, and a power source 23.

[0056] The guide rail slider structure includes: a guide rail 31, a body part 311, a slide groove 312, a first flange plate 313, a first positioning hole 3131, a second flange plate 314, a support column 315, a slider 32, a guide column 321, a first plate part 322, a second plate part 323, a second positioning part 324, and a second connecting part 325.

[0057] Air vent grille 40,

[0058] Transmission structure 50, power output component 51, plate 511, cylinder 512, second limiting part 513, second mounting hole 514, power input component 52, bearing seat 53, first mounting ear 531, first limiting part 532, first mounting hole 533, coupling 54, bearing 55, spline 56.

[0059] Air duct component 60. Detailed Implementation

[0060] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0061] The following is for reference. Figures 1-29 An indoor unit 100 and an air conditioner according to an embodiment of the present invention are described.

[0062] An indoor unit 100 according to a first aspect of the present invention includes: a housing 10 and a door opening assembly 20. The housing 10 has an air outlet 111. The door opening assembly 20 includes: a mounting plate 21 and a door opening 22. The mounting plate 21 is disposed on the housing 10 (e.g., located on the air outlet 111, or located below the inner side of the air outlet 111). The door opening 22 is movably disposed on the mounting plate 21 to switch between an open position with the air outlet 111 open and a closed position with the air outlet 111 closed.

[0063] See Figure 1 , Figure 2 and Figure 3 As shown, air outlets 111 can be opened on the front and left and right sides of the outer casing 10. An air duct component 60, a humidification unit, a heat exchanger, etc., can be installed inside the outer casing 10. The air duct component 60 can have multiple air duct outlets, which are arranged corresponding to the air outlets 111, with the air outlets 111 located downstream of the air duct outlets. This allows the air processed within the indoor unit 100 (e.g., after heating, cooling, or humidification) to be discharged into the indoor space through the air outlets 111. The door 22 can be opened and closed to allow air to pass through. Figure 1 The closing position shown and Figure 2 Switching between the shown open and closed positions allows air to be supplied when needed by opening or closing the door 22, and the door 22 can be stopped at any transition position between the open and closed positions to adjust the air volume and wind speed.

[0064] like Figure 4 and Figure 6 As shown, the switch door 22 is poweredly connected to the mounting plate 21 through the transmission structure 50, and the mounting plate 21 is provided with a receiving groove 211. The transmission structure 50 is disposed in the receiving groove 211. The inner side of the switch door 22 has a mounting part 223 extending toward the mounting plate 21. The mounting part 223 extends into the receiving groove 211 and is connected to the power output component 51 of the transmission structure 50.

[0065] It is understood that the switch door 22 and the mounting plate 21 are connected by a transmission structure 50. The transmission structure 50 transmits power and drives the switch door 22 to move relative to the mounting plate 21. At least a part of the transmission structure 50 is located between the switch door 22 and the mounting plate 21, resulting in a large size of the switch door assembly 20 in the front-to-back direction and a large space occupation. In this invention, a mounting part 223 is provided on the switch door 22. The mounting part 223 is used to connect with the power output component 51. The mounting part 223 protrudes towards the receiving groove 211. While the receiving groove 211 is used to receive the transmission structure 50, the mounting part 223 can also be received in the receiving groove 211, so that the gap between the switch door 22 and the mounting plate 21 is smaller, which can effectively reduce the thickness of the switch door assembly 20 and meet the design requirements of thinness and lightness.

[0066] According to an embodiment of the present invention, the indoor unit 100 can reduce the thickness of the door assembly 20 by providing a receiving groove 211 on the mounting plate 21 and connecting the mounting part 223 of the door switch 22 to the power output member 51 located in the receiving groove 211 after extending into the receiving groove 211. This reduces the difficulty of arranging the door assembly 20 and allows the door switch assembly 20 to meet the requirements of a thinner and lighter indoor unit 100.

[0067] like Figure 7 As shown, according to some embodiments of the present invention, the transmission structure 50 is constructed as a lead screw and nut transmission structure, and the lead screw (power input component 51) is disposed on the mounting plate 21, the nut plate is connected to the switch door 22, and the axis of the lead screw is parallel to the movement direction of the switch door 22, preferably the axis coincides with the center line of the switch door 22.

[0068] It should be noted that the transmission structure 50 in this embodiment of the invention is a screw and nut transmission structure. The screw meshes with the nut plate, and the nut plate is used to drive the opening and closing door 22 to rise and fall. The screw and nut transmission structure has high precision and good rigidity, and is set on the center line of the opening and closing door 22, which can achieve high-precision transmission and less noise during the transmission process. The axial force of the screw and nut transmission is greater, and the drive is more stable, which can drive the opening and closing door 22 with a larger weight. At the same time, in conjunction with the above-mentioned guide structure, the transmission stability of the opening and closing door 22 can be improved.

[0069] Of course, the position of the lead screw in this embodiment of the invention is not specifically limited. Based on the arrangement requirements of the door 22, it can be offset to the center line of the door 22.

[0070] More importantly, the screw and nut drive structure can achieve self-locking, so that the door 22 can be suspended at any position, making the door opening and closing assembly 20 safer.

[0071] like Figure 8 and Figure 9 As shown, further, bearing seats 53 are provided at both ends of the lead screw, bearings 55 are provided inside the bearing seats 53, the bearings 55 are connected to the lead screw, and the bearing seats 53 have first mounting ears 531, which are connected to the mounting plate 21.

[0072] Therefore, bearings 55 are provided at both ends of the lead screw, and the bearing housing 53 is provided on the mounting plate 21 through the first mounting ear 531, which can reduce the rotational resistance of the lead screw and improve the fixing stability and reliability of the lead screw in the receiving groove 211.

[0073] It should be noted that the receiving groove 211 can be configured as a through groove, with concave arc-shaped plates at both ends of the through groove. The arc-shaped plates are fitted to the bearing seat 53, and the first mounting ear 531 of the bearing seat 53 can be directly fixed to the flat plate 511 at both ends of the arc-shaped plate.

[0074] Combination Figure 11 , Figure 12 and Figure 13 As shown, the first mounting ear 531 is further provided with a first limiting part 532 and a first mounting hole 533, the mounting plate 21 has a first mating part 212 that is positioned and engaged with the first limiting part 532 and a first assembly part 213 that is engaged with the first mounting hole 533, and the two first mounting holes 533 on the two bearing seats 53 are arranged adjacent to each other relative to the two first limiting parts 532.

[0075] Specifically, the first limiting part 532 is positioned and engaged with the first mating part 212. For example, the first limiting part 532 is formed as a positioning protrusion, and the first mating part 212 is formed as a positioning hole that mates with it. The first mounting hole 533 is connected and engaged with the first assembly part 213. For example, the first assembly part 213 is formed as a threaded hole coaxially disposed with the first mounting hole 533, or as a mounting stud. Fasteners pass through the first mounting hole 533 and are connected to the first assembly part 213, so as to realize the installation and positioning of the bearing seat 53 through the first limiting part 532 and realize stable assembly through the first mounting hole 533, thereby improving the fixing stability and reliability of the lead screw on the mounting plate 21.

[0076] Furthermore, the two first mounting holes 533 on the two bearing seats 53 are arranged close to each other relative to the two first limiting parts 532, and the distance between the two first mounting holes 533 is closer, resulting in a better fixing effect on the lead screw.

[0077] like Figure 14 and Figure 15 As shown, according to some embodiments of the present invention, the indoor unit 100 further includes: a power source 23, a fixing frame 214 is provided in the receiving groove 211, the power source 23 is disposed in the fixing frame 214, and the output shaft of the power source 23 passes through the fixing frame 214 to be poweredly connected to the lead screw through the coupling 54.

[0078] Specifically, the mounting bracket 214 includes a U-shaped portion disposed in the receiving groove 211 of the mounting plate 21 and a plate 511 extending along the front-rear direction on the U-shaped portion. The plate 511 is provided with mounting studs. The power source 23 is constructed as a drive motor, and the motor housing 10 is fixed on the plate 511. The plate 511 is provided with a shaft hole. The motor shaft of the drive motor passes through the shaft hole and is connected to the first end of the coupling 54. The second end of the coupling 54 is connected to the lead screw to realize the power connection between the power source 23 and the lead screw. The power source 23 drives the lead screw to rotate, and the lead screw drives the nut plate (power output component 51) meshing with it to rise and fall linearly.

[0079] Therefore, by setting the fixing bracket 214, the fixing stability of the power source 23 can be improved, and by setting the coupling 54, a stable power connection between the power source 23 and the lead screw can be achieved, and overload of the power source 23 can be avoided, thereby improving the safety of the door opening and closing assembly 20 and effectively extending the service life of the door opening and closing assembly 20.

[0080] It should be noted that, see Figure 14 As shown, the coupling 54 is located between the bearing 55 and the power source 23. The end of the lead screw is provided with a spline groove, and a spline 56 is provided between the coupling 54 and the lead screw to achieve stable power transmission between the lead screw and the coupling 54 through keying, thereby improving the stability and reliability of power transmission.

[0081] like Figure 10 , Figure 16 , Figure 17 and Figure 18 As shown, according to some embodiments of the present invention, the nut plate includes: a plate body 511 and a cylinder 512 disposed on the centerline of the plate body 511, the cylinder 512 engaging with a lead screw, and the plate body 511 being connected to the switch door 22.

[0082] Therefore, the cylinder 512 is provided with an internal thread so that the cylinder 512 can mesh with the lead screw. The internal thread can be constructed as a trapezoidal tooth to achieve self-locking of the lead screw nut transmission structure. The plate 511 is located on the periphery of the cylinder 512 and is connected to the switch door 22 through the plate 511, which can also improve the connection stability and reliability between the switch door 22 and the nut plate.

[0083] See Figure 19 As shown, the nut plate is further provided with a second limiting part 513 and a second mounting hole 514. The mounting part 223 has a second mating part 224 that mates with the second limiting part 513 and a second assembly part 225 that mates with the second mounting hole 514. There are multiple second mounting holes 514 (e.g., each second limiting part 513 has a second mounting hole 514 at both ends).

[0084] Specifically, the second mating part 224 is formed as an elongated oval protrusion on the nut plate that protrudes towards the mounting plate 21, and the corresponding second limiting part 513 is formed as an elongated oval hole, so as to achieve positioning and mating with the second limiting part 513 and the second mating part 224 and to limit the rotation of the nut plate. The second assembly part 225 on the mounting part 223 is formed as a threaded hole, and the nut plate can be reliably and stably fixed on the opening and closing door 22 by fasteners passing through the second mounting hole 514 and threadedly fastened to the second assembly part 225.

[0085] Understandably, in order to improve the smoothness and reliability of the movement of the opening and closing door 22 relative to the mounting plate 21, a guide structure is generally provided. The guide structure achieves stable cooperation between the opening and closing door 22 and the mounting plate 21. However, during the guiding process of the guide structure, although the friction is much smaller than the friction of the opening and closing door 22 in direct contact with the mounting plate 21, it still has a certain amount of friction. This can easily lead to movement noise during the movement of the opening and closing door 22. In addition, the guide structure is heavy, requiring a matching structure to be set up for installation on the mounting door. A power source 23 with a large driving force is required for driving, which increases the cost.

[0086] Based on this, such as Figure 4 and Figure 5 As shown, the present invention constructs the guide structure as a guide rail slider structure 30, and the opening and closing door 22 is movably mounted on the mounting plate 21 via the guide rail slider structure 30 to switch between the open position of the air outlet 111 and the closed position of the air outlet 111. The slider 32 of the guide rail slider structure 30 is provided with multiple guide posts 321, and the guide posts 321 slide in cooperation with the guide rail 31 (see...). Figure 22 , Figure 26 and Figure 27 (As shown).

[0087] Specifically, the guide rail 31 can be set on the switch door 22, and the corresponding slider 32 can be set on the mounting plate 21; or the slider 32 can be set on the switch door 22, and the corresponding guide rail 31 can be set on the mounting plate 21, with the guide post 321 slidingly engaging with the guide rail 31 instead of directly contacting the guide rail 31. This allows the slider 32 to slide with the guide post 321 during the switching between the open and closed positions of the switch door 22, reducing the contact area between the slider 32 and the guide rail 31, further reducing the friction during the movement of the switch door 22 relative to the mounting plate 21, improving noise reduction, extending the service life of the switch door assembly 20, allowing for the selection of a smaller power source 23, and effectively reducing the cost of the indoor unit 100.

[0088] It should be noted that the guide post 321 can be configured to be fixed on the slider 32, so as to reduce the driving force required for the opening and closing of the door 22 by reducing the frictional contact area and improving the abnormal noise. The guide post 321 can also be configured to be rotatably mounted on the slider 32. While reducing the contact area, the rolling friction force is smaller, and the effect is better than the embodiment fixed on the slider 32.

[0089] According to the indoor unit 100 of the present invention, by making the guide rail 31 and the guide post 321 of the slider 32 slide together, the friction and friction loss during the opening and closing of the door 22 can be reduced. This not only extends the service life of the door assembly 20, thereby extending the service life of the indoor unit 100 and reducing abnormal noise, but also reduces the driving force required for the door 22 to move relative to the mounting plate 21. Correspondingly, a lower power source 23 can be selected to reduce the cost of the indoor unit 100.

[0090] It should be noted that the direction of movement of the switch door 22 is defined as the first direction, and the width direction of the switch door 22 is defined as the second direction perpendicular to the direction of movement. The switch door 22 and the mounting plate 21 are arranged opposite each other in the third direction, and the third direction is perpendicular to the first direction and different from the second direction. For example, when the switch door 22 moves in the up and down direction, the width direction (second direction) corresponds to the left and right direction. The switch door 22 and the mounting plate 21 are opposite each other in the front and back direction (third direction). At least part of the guide rail slider structure 30 and the transmission structure 50 can be located between the switch door 22 and the mounting plate 21. The inside and outside directions are relative concepts. The direction pointing towards the internal space of the outer shell 10 is the inside, and the direction away from the internal space of the outer shell 10 is the outside.

[0091] like Figure 23 and Figure 24 As shown, according to some embodiments of the present invention, the guide rail 31 includes a body portion 311, the body portion 311 having a sliding groove 312, the sliding groove 312 cooperating with the guide post 321.

[0092] Specifically, the main body 311 may include multiple plates 511. Two second plates are provided at both ends of the first plate, and a third plate is provided at the other end of the two second plates. The two third plates extend toward each other and are spaced apart. The extension direction of the two third plates is parallel to the extension direction of the first plate, so as to define a slide groove 312 by the first plate, the second plate and the third plate. The guide post 321 extends into the slide groove 312 and can slide in the slide groove 312. The surfaces of the third plate and the second plate that define the slide groove 312 can limit the guide post 321, which can improve the stability and reliability of the sliding cooperation between the guide rail 31 and the slider 32.

[0093] like Figure 6 , Figure 7 , Figure 20 and Figure 24 As shown, the guide rail 31 further includes a first flange plate 313 and a second flange plate 314 located on both sides of the opening of the slide groove 312, and both the first flange plate 313 and the second flange plate 314 are connected to the opening and closing door 22.

[0094] Specifically, a first flange plate 313 and a second flange plate 314 are respectively provided on the ends of the two third plates that are opposite to each other, and both the first flange plate 313 and the second flange plate 314 are connected to the opening and closing door 22.

[0095] In this way, on the one hand, the guide rail 31 is connected to the switch door 22 through the first flange plate 313 and the second flange plate 314, making the area where the guide rail 31 is connected to the switch door 22 larger, which can improve the connection stability between the guide rail 31 and the switch door 22. On the other hand, the first plate of the guide rail 31 is set near the switch door 22, while the first flange plate 313 and the second flange plate 314 of the guide rail 31 for connecting with the switch door 22 are set away from the switch door 22 relative to the first plate. The gap between the first flange plate 313 and the rear side of the switch door 22 can form a clearance space. The structure on the switch door 22 for connecting with the first flange plate 313 and the second flange plate 314 is set in the clearance space, which facilitates the connection between the switch door 22 and the guide rail 31, while the connection structure is not exposed on the outer surface of the switch door 22. This can also improve the aesthetics of the switch door assembly 20, and thus improve the aesthetics of the indoor unit 100.

[0096] Combination Figure 20 and Figure 21 As shown, the door 22 is further provided with a first positioning part 221 arranged in a row along the movement direction of the door 22 and a first connecting part 222 arranged in a row along the movement direction. The first flange plate 313 cooperates with the first positioning part 221, and the second flange plate 314 is connected to the first connecting part 222.

[0097] Specifically, the first connecting part 222 and the first positioning part 221 are arranged in a group. Each first connecting part 222 and the first positioning part 221 in each group are arranged with a guide rail 31. There can be multiple guide rails 31 between the opening and closing door 22 and the mounting plate 21. The first flange plate 313 on each guide rail 31 is connected to the corresponding first positioning part 221, and the second flange plate 314 on each guide rail 31 is connected to the corresponding first connecting part 222.

[0098] Furthermore, the first positioning part 221 can be formed as a positioning buckle, positioning protrusion, or other structure, and a positioning structure (such as a first positioning hole) that cooperates with the positioning buckle or positioning protrusion is provided on the first flange plate 313. The first connecting part 222 can be formed as a connecting stud, and a connecting structure (such as a first connecting hole) that cooperates with the connecting stud is provided on the second flange plate 314, so that the guide rail 31 is positioned and cooperated with the switch door 22 through the first flange plate 313 located on one side in the left-right direction, and the second flange plate 314 located on the other side in the left-right direction is fastened to the switch door 22, thereby improving the installation accuracy and fixing stability of the guide rail 31 on the switch door 22.

[0099] It is understood that the guide rail 31 is preferably in two columns, corresponding to two columns of the first connecting part 222 and the first positioning part 221. Each column of the first connecting part 222 may include multiple connecting structures extending along the length direction of the opening and closing door 22, and the first positioning part 221 may include multiple positioning structures extending along the length direction of the opening and closing door 22, so as to avoid the guide rail 31 from tilting relative to the opening and closing door 22 and improve the connection stability between the opening and closing door 22 and the guide rail 31.

[0100] Furthermore, the two rows of first connecting portions 222 are arranged adjacent to each other relative to the two rows of first positioning portions 221, that is, the distance between the first connecting portion 222 on the left and the first connecting portion 222 on the right is less than the distance between the first positioning portion 221 on the left and the first positioning portion 221 on the right. The first positioning portion 221 is constructed as a snap-fit, and the first positioning portion 221 includes a first column 2211 and a second column 2212 located at the end of the first column 2211. The first column 2211 is connected to the switch door 22, and the second column 2212 is arranged opposite to the switch door 22. The first flange plate 313 is provided with a first positioning hole 3131 suitable for the first column 2211 to pass through and to be positioned and engaged with the second column 2212 (see Figure 29 (As shown).

[0101] Specifically, the first positioning part 221 is constructed as an L-shaped buckle, including a first column 2211 and a second column 2212 located at the end of the first column 2211. The first column 2211 is connected to the opening and closing door 22. The second columns 2212 of the two rows of the first positioning parts 221 are arranged opposite to each other and extend towards or away from each other, or both extend upward, both extend downward, or one row extends upward and the other row extends downward, so as to limit the guide rail 31 through the second column 2212, so that the bending and torsional forces borne by the two rows of guide rails 31 can cancel each other out, and restrict the movement of the guide rails 31 in the front-back direction, the up-down direction and the left-right direction. In the embodiment of using a screw and nut transmission structure to output power to drive the opening and closing door 22, the connection stability and reliability between the guide rail 31 and the installation door can be further improved.

[0102] exist Figure 27 In the embodiment shown, the guide rail 31 further includes a support column 315 located on the base plate 13 of the slide groove 312. The guide rail 31 is disposed on the switch door 22, and the support column 315 pushes against the inner surface of the switch door 22.

[0103] Therefore, the support column 315 can push against the inner surface of the switch door 22. On the one hand, it can keep the distance between the guide rail 31 and the mounting plate 21 stable, so as to ensure the stable and reliable cooperation between the guide rail 31 and the guide column 321, avoid the phenomenon of offset, and improve the stability and reliability of the sliding cooperation between the guide rail 31 and the slider 32. On the other hand, it can effectively support the switch door 22, improve the structural strength of the switch door 22, avoid the local concave deformation of the switch door 22, and improve the aesthetics of the switch door 22.

[0104] It is understandable that there are multiple support columns 315, and the lengths of the multiple support columns 315 are different to adapt to the orthographic projection profile of the opening and closing door 22 in the direction of movement (see...). Figure 27 (As shown).

[0105] In other words, such as Figure 1 and Figure 2 As shown, in order to improve the aesthetics of the indoor unit 100, the outer casing 10 is mostly designed with a curved structure. The two ends of the front panel 11 may be curved, and the guide rail 31 is set on the curved area. This can improve the smoothness of the opening and closing of the door 22. As a result, the lengths of the multiple support columns 315 are different to adapt to the curved area of ​​the opening and closing door 22, providing better support for the opening and closing door 22. They can also push against the curved area of ​​the opening and closing door 22 to prevent deformation of the curved area of ​​the opening and closing door 22, effectively improving the aesthetics of the opening and closing door 22.

[0106] like Figure 22 , Figure 25 and Figure 26 As shown, according to some embodiments of the present invention, the slider 32 includes a first plate portion 322 and a second plate portion 323, and the guide post 321 is disposed on the first plate portion 322.

[0107] Specifically, in some embodiments, the orthographic projection profile of the first plate portion 322 in the direction of movement of the opening and closing door 22 is smaller than that of the second plate portion 323. The first plate portion 322 and the second plate portion 323 combine to form an orthographic projection profile with a convex shape. A guide post 321 is provided on the side of the first plate portion 322 away from the second plate portion 323. A groove is defined between the guide post 321 and the second plate portion 323. The third plate of the guide rail 31 extends into the groove. At least a portion of the guide post 321 and the first plate extends into the slide groove 312, so that the guide rail 31 and the slider 32 can limit and guide each other, thereby improving the stability of the cooperation between the guide rail 31 and the slider 32.

[0108] Furthermore, and more importantly, in the prior art, the first plate portion 322 has multiple plate-shaped segments, at least some of which slide in cooperation with the guide rail 31, resulting in low overall structural stability and strength of the slider 32, making it prone to deformation. In contrast, the first plate portion 322 of the present invention is an integral plate, and the guide posts 321 are arranged in multiple sets at intervals, which can take into account the structural strength of the slider 32, prevent the slider 32 from deforming, and improve the stability and reliability of the cooperation between the slider 32 and the guide rail 31.

[0109] like Figure 26 As shown, the guide posts 321 are further arranged in groups, with each group of guide posts 321 having at least one, and multiple groups of guide posts 321 are spaced apart in the direction of movement.

[0110] This makes the force distribution between the slider 32 and the guide rail 31 more uniform, and each slider 32 and guide rail 31 has at least one guide post 321 in the mating area, which can effectively improve the mating stability and reliability of the guide rail 31 and slider 32.

[0111] Furthermore, guide posts 321 are provided on both sides of the movement direction of the opening and closing door 22, and in both the open and closed positions, at least two guide posts 321 on each side of the movement direction of the opening and closing door 22 are located within the grooves 311 of the guide rail 31. This prevents the guide rail 31 from disengaging from the slider 32 in the two extreme positions of the opening and closing door 22, and ensures that the opening and closing door 22 does not rotate relative to the mounting plate 21 in the extreme positions, thus improving the stability and reliability of the sliding fit between the guide rail 31 and the slider 32.

[0112] In some embodiments, the slide can have multiple guide sections, the length of each guide section being consistent with the travel length of the opening and closing door 22, and each set of guide posts 321 extending into the corresponding guide section. While realizing sliding guidance and limiting, it can also improve the structural strength of the guide rail 31 and extend the service life of the guide rail slider structure 30.

[0113] like Figure 25 and Figure 28 As shown, the second plate portion 323 is further provided with a second positioning portion 324 and a second connecting portion 325, and the second plate portion 323 is positioned on the mounting plate 21 by the second positioning portion 324 and connected to the mounting plate 21 by the second connecting portion 325.

[0114] Specifically, the second positioning part 324 is formed as a positioning protrusion on the second plate part 323, and the second connecting part 325 is formed as a connecting hole on the second plate part 323. Correspondingly, a second positioning hole 215 that cooperates with the second positioning part 324 and a second connecting hole 216 that cooperates with the second connecting part 325 can be provided on the mounting plate 21. The second positioning part 324 realizes the initial positioning of the slider 32 on the mounting plate 21, and the second connecting part 325 realizes the fixed connection between the mounting plate 21 and the slider 32. While improving the structural strength of the slider 32, it can also improve the installation accuracy and connection stability of the slider 32 on the mounting plate 21.

[0115] Preferably, the second positioning part 324 is formed as a positioning protrusion with an elongated oval outline in the front-back direction, and the second positioning hole 215 is formed as an elongated hole, which has higher positioning accuracy and can resist a certain bending and torsional force, so as to prevent the guide rail 31 from disengaging from the mounting plate 21 after the door 22 is subjected to a lateral impact, and further improve the structural stability of the door opening and closing assembly 20.

[0116] like Figure 25 As shown, the second positioning part 324 and the second connecting part 325 are staggered in the direction of movement, which not only effectively improves the connection stability, but also makes the force distribution between the slider 32 and the mounting plate 21 more uniform.

[0117] like Figure 5 As shown, according to some embodiments of the present invention, the housing 10 includes a front panel 11, which defines an air outlet 111, and the front panel 11 is connected to the mounting plate 21.

[0118] Specifically, the front panel 11, the back panel 12, and the chassis define an installation space. The mounting plate 21 is disposed within the installation space and is located between the front panel 11 and the back panel 12. Mounting structures can be provided on the front panel 11 and / or the back panel 12, such as multiple mounting studs and mounting holes on the front panel 11. The mounting plate 21 is provided with mounting holes or mounting studs that cooperate with it to fix the mounting plate 21 on the front panel 11, thereby improving the stability of the mounting plate 21 on the housing 10.

[0119] The mounting plate 21 has mounting flanges located at least on both sides of the switch door 22 and connected to the front panel 11.

[0120] The peripheral edge of the mounting plate 21 is formed into a mounting flange. The mounting flange is provided with mounting holes or mounting studs that mate with the front panel 11. The mounting plate 21 is fixed to the front panel 11 by fasteners such as screws, which effectively improves the stability and reliability of the mounting plate 21 on the front panel 11.

[0121] like Figure 3 and Figure 5 As shown, according to some embodiments of the present invention, an air outlet 111 is further provided with an air outlet grille 40, and the mounting plate 21 and the air outlet grille 40 are arranged sequentially in the movement direction of the opening and closing door 22, or the mounting plate 21 and the air outlet grille 40 are integrally formed.

[0122] Specifically, in some embodiments, the air outlet grille 40 and the mounting plate 21 are separately arranged, and the air outlet grille 40 is arranged on the air outlet 111. In other embodiments, the air outlet grille 40 and the mounting plate 21 are integrally formed. In the open position, the air outlet grille 40 is located above the switch door 22, and the air outlet grille 40 and the switch door 22 are staggered or partially overlapped in the vertical direction. In the closed position, the air outlet grille 40 is completely blocked by the switch door 22 in the front-back direction, so as to effectively block the air outlet grille 40 and improve the blocking effect of the switch door 22 on the air outlet grille 40.

[0123] Furthermore, the air vent grille 40 and the switch door 22 are spaced apart in a direction perpendicular to the direction of movement, that is, the switch door 22 and the air vent grille 40 are spaced apart in the front-rear direction. This also allows the left and right edges of the switch door 22 to be spaced apart from the front panel 11. This prevents interference between the switch door 22 and the front panel 11 or between the switch door 22 and the air vent grille 40 during the movement of the switch door 22, improves the stability of the switch door 22's movement, avoids abnormal noises during the movement of the switch door 22, and improves the user experience of the switch door 22.

[0124] An air conditioner according to a second aspect of the present invention includes: an indoor unit 100 as described in the above embodiments, which has the same technical effects as the indoor unit 100 described above, and will not be repeated here.

[0125] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0126] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0127] In the description of this invention, "a plurality of" means two or more.

[0128] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0129] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0130] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. 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.

[0131] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An indoor unit, characterized in that, include: The outer casing (10) has an air outlet (111). A door opening / closing assembly (20) includes a mounting plate (21) and a door opening / closing door (22). The mounting plate (21) is disposed on the housing (10), and the door opening / closing door (22) is movably disposed on the mounting plate (21) to switch between a first position with the air outlet (111) open and a second position with the air outlet (111) closed. The switch door (22) and the mounting plate (21) are connected by a transmission structure (50). The mounting plate (21) is provided with a receiving groove (211) that is recessed away from the switch door (22). The transmission structure (50) is located in the receiving groove (211). The inner side of the switch door (22) has a mounting part (223) that extends toward the mounting plate (21). The mounting part (223) protrudes toward the receiving groove (211). The mounting part (223) extends into the receiving groove (211) and is connected to the power output component (51) of the transmission structure (50). The receiving groove (211) is used to accommodate the transmission structure (50), and the mounting part (223) is also accommodated in the receiving groove (211). The outer casing (10) includes a front panel (11) that defines the air outlet (111), the front panel (11) being connected to the mounting plate (21), the mounting plate (21) being located below the inner side of the air outlet (111); The guide structure guides the movement of the switch door (22) and the mounting plate (21). The guide structure is constructed as a guide rail slider structure (30), with the guide rail (31) connected to the switch door (22) and the slider (32) connected to the mounting plate (21). Multiple guide posts (321) are provided on the slider (32) of the guide rail slider structure (30), and the guide posts (321) slide in cooperation with the guide rail (31). The guide rail (31) includes a body part (311). The first flange plate (313) and the second flange plate (314) are located on both sides of the opening of the slide groove (312). The first flange plate (313) and the second flange plate (314) are both connected to the switch door (22). The switch door (22) is provided with a first positioning part (221) arranged in a row along the movement direction. The first positioning part (221) is constructed as an L-shaped buckle. The first flange plate (313) is provided with a first positioning hole (3131) that cooperates with the first positioning part (221). The transmission structure (50) is constructed as a screw and nut transmission structure, and the screw is set on the mounting plate (21), the nut plate is connected to the switch door (22), and the axis of the screw is parallel to the movement direction of the switch door (22); The nut plate includes: a plate body (511) and a cylinder (512) disposed on the centerline of the plate body (511), the cylinder (512) meshing with the lead screw, and the plate body (511) being connected to the switch door (22); The nut plate is provided with a second limiting part (513) and a second mounting hole (514). The mounting part (223) has a second mating part (224) that mates with the second limiting part (513) and a second assembly part (225) that mates with the second mounting hole (514). There are multiple second mounting holes (514).

2. The indoor unit according to claim 1, characterized in that, Both ends of the lead screw are provided with bearing seats (53), and bearings (55) are provided inside the bearing seats (53). The bearings (55) are connected to the lead screw, and the bearing seats (53) have a first mounting ear (531), which is connected to the mounting plate (21).

3. The indoor unit according to claim 2, characterized in that, The first mounting ear (531) is provided with a first limiting part (532) and a first mounting hole (533). The mounting plate (21) has a first mating part (212) that is positioned and engaged with the first limiting part (532) and a first assembly part (213) that is engaged with the first mounting hole (533). The two first mounting holes (533) on the two bearing seats (53) are arranged adjacent to each other relative to the two first limiting parts (532).

4. The indoor unit according to claim 2, characterized in that, Also includes: The power source (23) is provided with a fixed frame (214) in the receiving groove (211). The power source (23) is located in the fixed frame (214), and the output shaft of the power source (23) passes through the fixed frame (214) to be connected to the lead screw via a coupling (54).

5. The indoor unit according to claim 4, characterized in that, The coupling (54) is located between the bearing (55) and the power source (23).

6. The indoor unit according to claim 1, characterized in that, An air outlet grille (40) is also provided on the air outlet (111). The mounting plate (21) and the air outlet grille (40) are arranged sequentially in the direction of movement of the opening and closing door (22), or the mounting plate (21) and the air outlet grille (40) are integrally formed.

7. The indoor unit according to claim 6, characterized in that, The air outlet grille (40) and the mounting plate (21) are spaced apart in a direction perpendicular to the direction of movement.

8. An air conditioner, characterized in that, include: The indoor unit according to any one of claims 1-7.

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