Electric control box and air conditioner indoor unit

Abstract

The utility model discloses electric control box and air conditioner indoor unit, electric control box includes: main part box, function extension box, wherein, the function extension box is provided with mounting panel, and the first side of function extension control panel thickness direction is placed in mounting panel, and the function extension box is provided with limit stop and elastic buckle, and limit stop and elastic buckle all are opposite setting with mounting panel, and the second side of function extension control panel thickness direction is limited with limit stop and is limited with elastic buckle elastic joint cooperation. Therefore, through make the first side of function extension control panel thickness direction be placed in mounting panel, and the second side is limited with limit stop and is limited with elastic buckle elastic joint cooperation, like this not only can make function extension control panel's installation more simple and direct, steady and reliable, and, the whole installation process of function extension control board does not need to use screwdriver and other tools, also does not need accurate alignment multiple screw holes, can simplify function extension control board's installation difficulty, promotes installation efficiency.

Description

Technical Field

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

[0002] The control box is the core control unit of the air conditioner, responsible for coordinating and controlling the operation of the entire air conditioning system. The performance of the control box directly affects the comfort, energy efficiency and service life of the air conditioner.

[0003] In related technologies, when installing the circuit control board in the electrical control box, it is not only difficult to accurately install the circuit control board into the preset position, but also the installation steps are cumbersome, the installation efficiency is low, and problems such as loosening or shaking are easy to occur after installation. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide an electrical control box with a simple and reliable structure, which can improve the structural stability and assembly efficiency of the functional expansion control board within the electrical control box.

[0005] According to the present invention, an electrical control box is provided inside the electrical control box, the main control board being adapted to be electrically connected to relevant electrical components in an air conditioner; the electrical control box includes: a main body box, in which the main control board is disposed; a function expansion box, the function expansion box being disposed on one side of the main control board, the function expansion box being provided with at least one function expansion control board, the function expansion control board being electrically connected to relevant electrical components in the air conditioner; and / or the function expansion control board being electrically connected to the main control board; wherein, a mounting plate is provided inside the function expansion box, a first side of the function expansion control board in the thickness direction is placed on the mounting plate, a limiting block and an elastic buckle are provided inside the function expansion box, the limiting block and the elastic buckle are both disposed opposite to the mounting plate, and a second side of the function expansion control board in the thickness direction is limited and engaged with the limiting block and elastically engaged with the elastic buckle.

[0006] The above technical solution has the following advantages or beneficial effects: by placing the first side of the function expansion control board in the thickness direction on the mounting plate, and the second side being limited and engaged with the limiting block and elastically engaged with the elastic buckle, the installation of the function expansion control board can be made simpler, more direct, more stable and reliable. Moreover, the entire installation process of the function expansion control board does not require the use of tools such as screwdrivers, nor does it require precise alignment of multiple screw holes, which simplifies the installation difficulty of the function expansion control board and improves the installation efficiency.

[0007] In some examples of this utility model, the limiting block is disposed opposite to at least one end of the function expansion control board along its length and is engaged with it in a limiting manner; the elastic buckle is spaced apart from the limiting block along the length of the function expansion control board and is elastically engaged with the function expansion control board.

[0008] The above technical solution has the following advantages or beneficial effects: it not only makes the installation of the function expansion control board simple, direct, stable and reliable, but also facilitates the installation and disassembly of the function expansion control board, and facilitates the subsequent improvement and maintenance of the function expansion control board. Moreover, the entire installation process of the function expansion control board does not require the use of tools such as screwdrivers, nor does it require precise alignment of multiple screw holes, which simplifies the installation difficulty of the function expansion control board and improves installation efficiency.

[0009] In some examples of this utility model, the mounting plate is provided with a plurality of guide limiting pieces, which are spaced apart along the circumference of the functional expansion control plate. In a direction that gradually approaches the mounting plate along the thickness direction of the functional expansion control plate, the distance between the guide limiting pieces on both sides of the length direction of the functional expansion control plate gradually decreases; and / or the distance between the guide limiting pieces on both sides of the width direction of the functional expansion control plate gradually decreases, so as to guide and limit the functional expansion control plate.

[0010] The above technical solution has the following advantages or beneficial effects: it can not only improve the stability and reliability of the function expansion control board after installation, but also ensure the accuracy of the installation position of the function expansion control board and improve the installation efficiency of the function expansion control board.

[0011] In some examples of this utility model, the guide limiting piece includes a guide portion and an abutment portion, the abutment portion being connected between the guide portion and the mounting plate, and the abutment portion abutting against a first side of the functional expansion control plate in the thickness direction; in a direction that gradually approaches the mounting plate along the thickness direction of the functional expansion control plate, the distance between the guide portions on both sides of the functional expansion control plate in the length direction gradually decreases; and / or the distance between the guide portions on both sides of the functional expansion control plate in the width direction gradually decreases.

[0012] The above technical solution has the following advantages or beneficial effects: it can not only ensure the structural stability of the function expansion control board after installation, but also prevent the first side of the function expansion control board in the thickness direction from being in contact with the mounting plate, which would make it difficult to dissipate heat, thus facilitating the heat dissipation of the function expansion control board.

[0013] In some examples of this utility model, the functional expansion box includes: a box body, wherein one side in the left-right direction and one side in the up-down direction of the box body are both open to form a first open side and a second open side; and a cover, which is snapped into the box body and covers the first open side and the second open side.

[0014] The above technical solution has the following advantages or beneficial effects: it can not only prevent external dust, moisture and other foreign objects from entering the box, but also prevent external physical impacts from directly acting on the functional expansion control board and devices inside the box.

[0015] In some examples of this utility model, the cover includes: a first cover portion covering the first open side; a second cover portion covering the second open side; one side of the first cover portion in the vertical direction connected to the second cover portion; a first snap-fit ​​portion and a first positioning portion provided on the side of the first cover portion in the vertical direction away from the second cover portion; the box body is provided with a second snap-fit ​​portion and a second positioning portion; one of the first snap-fit ​​portion and the second snap-fit ​​portion is a first buckle, and the other is a first slot, the first buckle and the first slot engaging; one of the first positioning portion and the second positioning portion is a positioning protrusion, and the other is a positioning groove, the positioning protrusion and the positioning groove positioning.

[0016] The above technical solution has the following advantages or beneficial effects: the snap-fit ​​between the first buckle and the first slot not only makes the connection between the first cover and the box simple, direct, stable and reliable, but also facilitates the installation and disassembly of the first cover; the positioning fit between the positioning protrusion and the positioning groove can quickly determine the installation position of the first cover on the box, improving the installation efficiency and accuracy of the first cover.

[0017] In some examples of this utility model, at least one side of the second cover portion in the vertical direction is provided with a third latching portion, the third latching portion is provided away from the first cover portion in the horizontal direction, the box body is provided with a fourth latching portion, one of the third latching portion and the fourth latching portion is a second buckle, and the other is a second slot, the second buckle and the second slot engage with each other.

[0018] The above technical solution has the following advantages or beneficial effects: it not only makes the connection between the second cover and the box simple, direct, stable and reliable, but also facilitates the installation and disassembly of the second cover.

[0019] In some examples of this utility model, the functional expansion control board includes a first expansion control board and a second expansion control board. The first expansion control board and the second expansion control board both extend in the front-back direction and are arranged perpendicular to each other. The first expansion control board and the second expansion control board are electrically connected to each other.

[0020] The above technical solution has the following advantages or beneficial effects: it can not only improve the structural compactness and space utilization of the function expansion box, but also improve the complexity of the function of the function expansion box and reduce the circuit density and load pressure on a single function expansion control board.

[0021] In some examples of this utility model, the functional expansion control board includes at least one of a display screen control board, a human sensor control board, and a voice control board.

[0022] The above technical solution has the following advantages or beneficial effects: it can not only improve the flexibility of the control box, enabling the control box to be flexibly configured with corresponding functional modules according to actual application scenarios and actual needs, but also facilitate the maintenance and improvement of the display control board, human sensor control board and voice control board.

[0023] The indoor unit of the air conditioner according to an embodiment of the present utility model includes: the electrical control box described above.

[0024] The above technical solution has the following advantages or beneficial effects: it can not only improve the assembly efficiency of the indoor unit of the air conditioner, but also improve the structural stability of the indoor unit of the air conditioner.

[0025] Additional aspects and advantages of this 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

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a functional expansion box according to an embodiment of the present utility model; Figure 2 This is an exploded view of the functional expansion box according to an embodiment of the present utility model; Figure 3 This is an exploded view of the functional expansion box according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of a functional expansion box according to an embodiment of the present utility model; Figure 5 yes Figure 5 Cross-sectional view along the AA direction; Figure 6 yes Figure 5Cross-sectional view along the BB direction; Figure 7 This is a partial schematic diagram of a functional expansion box according to an embodiment of the present utility model; Figure 8 This is a partial schematic diagram of a functional expansion box according to an embodiment of the present utility model; Figure 9 This is a partial schematic diagram of a functional expansion box according to an embodiment of the present utility model; Figure 10 This is a partial schematic diagram of a functional expansion box according to an embodiment of the present utility model; Figure 11 This is a cross-sectional view of the functional expansion box according to an embodiment of the present utility model; Figure 12 This is a schematic diagram of the limiting guide plate according to an embodiment of the present utility model.

[0027] Figure label: 100. Function expansion box; 10. Function expansion control board; 101. First expansion control board; 102. Second expansion control board; 20. Mounting plate; 30. Limiting block; 40. Elastic buckle; 50. Guide limit plate; 501. Guide part; 502. Abutment part; 60. Box body; 601. First open side; 602. Second open side; 603. Second snap-fit ​​part; 604. Second positioning part; 605. Fourth snap-fit ​​part; 70. Cover; 701. First cover part; 7011. First snap-fit ​​part; 7012. First positioning part; 702. Second cover part; 7021. Third snap-fit ​​part. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0029] The following is for reference. Figures 1-12 The present invention describes an electrical control box according to an embodiment of the present invention, which can be applied to an indoor unit of an air conditioner.

[0030] Combination Figures 1-12 As shown, the electrical control box according to this utility model can mainly include: a main body box and a function expansion box 100.

[0031] The electrical control box contains a main control board, which is suitable for electrical connection with relevant electrical components in the air conditioner. The main control board can send control commands to relevant electrical components in the air conditioner and receive feedback signals or data information from these components in order to monitor and regulate the operating status of these components.

[0032] The electrical control box includes a main box and a function expansion box 100. The main box contains a main control board; the function expansion box 100 is located on one side of the main control board, and the function expansion box 100 contains at least one function expansion control board 10, which is electrically connected to relevant electrical components in the air conditioner; and / or the function expansion control board 10 is electrically connected to the main control board.

[0033] Specifically, the main control box houses the main control board. The main control box not only provides the necessary installation space and mechanical support for the main control board, ensuring its stable installation, but also effectively blocks external dust, moisture, oil, and other impurities, preventing these impurities from adhering to the surface of the main control board. At the same time, the main control box can also prevent external physical impacts from directly acting on the main control board, thereby improving the stability and reliability of the main control board during operation.

[0034] Furthermore, the function expansion box 100 is disposed on one side of the main control board, and at least one function expansion control board 10 is disposed in the function expansion box 100. Specifically, the function expansion box 100 is disposed on the side of the main box where the main control board is installed, and at least one function expansion control board 10 is disposed in the function expansion box 100. This can help shorten the electrical connection lines between the main control board and the function expansion control board 10, and facilitate the realization of electrical connection between the main control board and the function expansion control board 10.

[0035] Furthermore, the function expansion control board 10 is electrically connected to the relevant electrical components in the air conditioner. This allows the function expansion control board 10 to send control commands to the electrically connected components and receive feedback signals or data information from these components, thereby monitoring and regulating the operating status of these components.

[0036] Furthermore, the function expansion control board 10 is electrically connected to the main control board, so that the main control board can send control commands to the function expansion control board 10. At the same time, the main control board also receives feedback signals or data information from the function expansion control board 10, thereby coordinating the work of different function expansion control boards 10 through the main control board and realizing the coordinated work of related components in the air conditioner.

[0037] Furthermore, the electrical control box is divided into two parts: a main box and a function expansion box 100. The main box contains core components such as a main control board to realize the basic control functions of the electrical control box, while the function expansion box 100 contains additional components such as a function expansion control board 10 to supplement the functions of the electrical control box.

[0038] In this way, when the function of the control box needs to be expanded or improved, only the function expansion box 100 needs to be designed or replaced without modifying the main box. This not only shortens the development cycle and reduces development costs, but also enables the main box to be universal. By matching different function expansion boxes 100 with the same main box, control boxes that meet different customer needs or different application scenarios can be quickly derived, which can improve the design flexibility of the control box. In addition, if the function expansion box 100 has a problem, only the function expansion box 100 needs to be replaced or repaired. If the main box is damaged, only the main box needs to be replaced or repaired, which can reduce the maintenance difficulty and spare parts cost of the control box.

[0039] The function expansion box 100 is provided with a mounting plate 20. The first side of the function expansion control plate 10 in the thickness direction is placed on the mounting plate 20. The function expansion box 100 is provided with a limiting block 30 and an elastic buckle 40. The limiting block 30 and the elastic buckle 40 are both arranged opposite to the mounting plate 20. The second side of the function expansion control plate 10 in the thickness direction is limited by the limiting block 30 and elastically engaged with the elastic buckle 40.

[0040] Specifically, the mounting plate 20 can be used to support the first side of the function expansion control board 10, providing a stable mounting base for the function expansion control board 10; the limiting block 30 and the elastic buckle 40 are both arranged opposite to the mounting plate 20, thereby forming a gap area between the limiting block 30 and the elastic buckle 40 and the mounting plate 20, providing installation space for the function expansion control board 10; moreover, the limiting block 30 and the elastic buckle 40 can be used to limit the position of the second side of the function expansion control board 10, preventing the function expansion control board 10 from moving in the thickness direction.

[0041] Furthermore, when installing the function expansion control board 10, first align the first side of the function expansion control board 10 in the thickness direction with the mounting plate 20 to ensure that the installation direction and position of the function expansion control board 10 are correct. Then, place the function expansion control board 10 in the gap area between the limiting block 30 and the elastic buckle 40 and the mounting plate 20. Through the combined action of the limiting block 30 and the elastic buckle 40 and the mounting plate 20, the two sides of the mounting plate 20 in the thickness direction can be limited, thereby completing the installation of the function expansion control board 10 in the function expansion box 100.

[0042] This not only makes the installation process of the function expansion control board 10 simpler and more direct, but also ensures the stability and reliability of the function expansion control board 10 after installation. Moreover, the entire installation process of the function expansion control board 10 does not require the use of tools such as screwdrivers, nor does it require precise alignment of multiple screw holes, which simplifies the installation difficulty of the function expansion control board 10 and improves installation efficiency.

[0043] Combination Figures 2-10 As shown, the limiting block 30 is disposed opposite to at least one end of the function expansion control board 10 in the length direction and is engaged with it in a limiting manner. The elastic buckle 40 is spaced apart from the limiting block 30 in the length direction of the function expansion control board 10 and is elastically engaged with the function expansion control board 10.

[0044] Specifically, the limiting block 30 is limited and engaged with one side of the function expansion control board 10 in the length direction, and the elastic buckle 40 is elastically engaged with the other side of the function expansion control board 10 in the length direction.

[0045] Furthermore, when installing the function expansion control board 10, first align the first side of the function expansion control board 10 in the thickness direction with the mounting plate 20 to ensure that the installation direction and position of the function expansion control board 10 are correct. Then, insert the side of the function expansion control board 10 in the length direction that is limited and engaged with the limiting block 30 into the gap area between the limiting block 30 and the mounting plate 20. Then, apply force to the function expansion control board 10 so that the other side of the function expansion control board 10 in the length direction is elastically engaged with the elastic buckle 40, thereby completing the installation of the function expansion control board 10 in the function expansion box 100.

[0046] Furthermore, when disassembling the function expansion control board 10, an appropriate external force is first applied to press the elastic buckle 40, causing the elastic buckle 40 to deform and simultaneously disable the limiting effect of the elastic buckle 40 on the second side of the function expansion control board 10. Then, the side of the function expansion control board 10 corresponding to the elastic buckle 40 in the length direction is moved away from the mounting plate 20 in the thickness direction. At the same time, the side of the function expansion control board 10 corresponding to the limiting block 30 in the length direction is also moved away from the limiting block 30 in the length direction, thereby completing the disassembly of the function expansion control board 10. In this way, the installation of the function expansion control board 10 can be simple, direct, stable and reliable, and it is convenient to install and disassemble the function expansion control board 10, as well as to improve and maintain the function expansion control board 10 in the future. Moreover, the entire installation process of the function expansion control board 10 does not require the use of tools such as screwdrivers, nor does it require precise alignment of multiple screw holes, which can simplify the installation difficulty of the function expansion control board 10 and improve the installation efficiency.

[0047] Combination Figures 2-10As shown, the mounting plate 20 is provided with a plurality of guide limiting pieces 50. The plurality of guide limiting pieces 50 are spaced apart along the circumferential direction of the functional expansion control plate 10. In the direction that gradually approaches the mounting plate 20 along the thickness direction of the functional expansion control plate 10, the distance between the guide limiting pieces 50 on both sides of the length direction of the functional expansion control plate 10 gradually decreases; and / or the distance between the guide limiting pieces 50 on both sides of the width direction of the functional expansion control plate 10 gradually decreases, so as to guide and limit the functional expansion control plate 10.

[0048] Specifically, multiple guide limit plates 50 are spaced apart in the circumferential direction of the function expansion control board 10, and one or more guide limit plates 50 are correspondingly provided around the four sides of the function expansion control board 10. This can limit the movement and shaking of the function expansion control board 10 around its four sides, thereby improving the stability and reliability of the function expansion control board 10 after installation.

[0049] Furthermore, the distance between the guide limit pieces 50 on both sides of the length direction of the function expansion control board 10 gradually decreases, and / or the distance between the guide limit pieces 50 on both sides of the width direction of the function expansion control board 10 gradually decreases. In other words, the guide limit pieces 50 on both sides of the length direction and / or width direction of the function expansion control board 10 are inclined surfaces that are inclined towards the mounting plate 20 in the thickness direction.

[0050] Thus, during installation, as the function expansion control board 10 moves closer to the mounting plate 20 in the thickness direction, the distance between the guide limit plates 50 on both sides of the function expansion control board 10 in the length and / or width direction gradually decreases. This allows the function expansion control board 10 to be guided quickly and accurately to the preset position by the inclined surface of the guide limit plates 50, thereby not only ensuring the accuracy of the installation position of the function expansion control board 10, but also improving the installation efficiency of the function expansion control board 10.

[0051] In some embodiments of this utility model, combined with Figures 2-10 and Figure 12 As shown, the guide limiting piece 50 includes a guide portion 501 and an abutment portion 502. The abutment portion 502 is connected between the guide portion 501 and the mounting plate 20, and the abutment portion 502 abuts against the first side of the function expansion control plate 10 in the thickness direction. In the direction that gradually approaches the mounting plate 20 along the thickness direction of the function expansion control plate 10, the distance between the guide portions 501 on both sides of the function expansion control plate 10 in the length direction gradually decreases; and / or the distance between the guide portions 501 on both sides of the function expansion control plate 10 in the width direction gradually decreases.

[0052] Specifically, the guide portion 501 is located on the side of the guide limiting piece 50 away from the mounting plate 20, and the abutting portion 502 is located on the side of the guide limiting piece 50 close to the mounting plate 20. The end of the abutting portion 502 away from the guide portion 501 is fixedly connected to the mounting plate 20, and the end of the abutting portion 502 close to the guide portion 501 is fixedly connected to the guide portion 501, thereby connecting the abutting portion 502 between the guide portion 501 and the mounting plate 20.

[0053] Furthermore, after the function expansion control board 10 is installed in place, the abutting part 502 will abut against the first side of the function expansion control board 10 in the thickness direction to restrict the movement of the first side of the function expansion control board 10 in the thickness direction and prevent the function expansion control board 10 from continuing to move closer to the mounting plate 20 in the thickness direction. This not only ensures the structural stability of the function expansion control board 10 after installation, but also prevents the first side of the function expansion control board 10 in the thickness direction from being in contact with the mounting plate 20, which would make it difficult to dissipate heat. This can help dissipate heat from the function expansion control board 10.

[0054] Furthermore, the abutment portion 502 allows for a certain gap between the function expansion control board 10 and the mounting plate 20. This not only prevents the lines or devices on the first side of the function expansion control board 10 from being squeezed and damaged, but also facilitates the modification or repair of the line design and device settings on the first side of the function expansion control board 10 in the thickness direction.

[0055] Furthermore, as the functional expansion control plate 10 gradually approaches the mounting plate 20 along its thickness direction, the distance between the guide portions 501 on both sides of the functional expansion control plate 10 in the length direction gradually decreases, and / or the distance between the guide portions 501 on both sides of the functional expansion control plate 10 in the width direction gradually decreases. In other words, the guide portion 501 of the guide limit piece 50 is an inclined surface that is inclined towards the mounting plate 20 in the thickness direction. As the functional expansion control plate 10 gradually approaches the mounting plate 20 in the thickness direction, the guide portion 501 can guide the functional expansion control plate 10 to quickly and accurately reach the preset position. This not only ensures the accuracy of the installation position of the functional expansion control plate 10, but also improves the installation efficiency of the functional expansion control plate 10.

[0056] Furthermore, the angle of the guide portion 501, the height of the contact portion 502, and the number of guide limit plates 50 can all be adjusted so that the guide limit plates 50 can be adapted to the functional expansion control boards 10 of different sizes and weights.

[0057] In some other embodiments of this utility model, the abutting portion 502 of some guide limiting pieces 50 does not abut against the first side in the thickness direction of the function expansion control plate 10, but only abuts against one side in the length or width direction of the function expansion control plate 10, so as to limit the shaking or movement of the function expansion control plate 10 in the length or width direction, thereby further improving the stability of the function expansion control plate 10 after installation.

[0058] Combination Figures 1-3 and Figure 11 As shown, the function expansion box 100 includes: a box body 60 and a cover 70.

[0059] The box 60 is open on one side in the left-right direction and one side in the up-down direction to form a first open side 601 and a second open side 602, which facilitates the installation and removal of the functional expansion control board 10 and devices inside the box 60.

[0060] Furthermore, the cover 70 is snap-fitted into the box 60, covering the first open side 601 and the second open side 602. Specifically, the cover 70 and the box 60 are snap-fitted together, which not only makes the connection between the cover 70 and the box 60 simple, direct, stable and reliable, but also facilitates the installation and removal of the cover 70, and facilitates the inspection and replacement of the functional expansion control board 10 and components inside the box 60.

[0061] In addition, the cover 70 is provided on the first open side 601 and the second open side 602 to close the box 60. This not only prevents foreign objects such as dust and moisture from entering the box 60 and affecting the working performance of the function expansion box 100, but also prevents external physical impacts from directly acting on the function expansion control board 10 and devices inside the box 60, thereby reducing the risk of mechanical damage to the function expansion control board 10 and devices inside the box 60.

[0062] Combination Figures 1-6 and Figure 11 As shown, the cover 70 includes a first cover portion 701 and a second cover portion 702.

[0063] The first cover portion 701 covers the first open side 601, and the second cover portion 702 covers the second open side 602. One side of the first cover portion 701 in the vertical direction is connected to the second cover portion 702. This can form a complete seal for the internal structure of the box 60, which can not only effectively prevent external dust, moisture and other foreign objects from entering the box 60 and affecting the working performance of the function expansion box 100, but also prevent external physical impacts from directly acting on the function expansion control board 10 and devices inside the box 60, thereby reducing the risk of mechanical damage to the function expansion control board 10 and devices inside the box 60.

[0064] Furthermore, the first cover portion 701 is provided with a first snap-fit ​​portion 7011 and a first positioning portion 7012 on the side away from the second cover portion 702 in the vertical direction. The box body 60 is provided with a second snap-fit ​​portion 603 and a second positioning portion 604. One of the first snap-fit ​​portion 7011 and the second snap-fit ​​portion 603 is a first buckle and the other is a first slot. The first buckle and the first slot are snap-fitted together. One of the first positioning portion 7012 and the second positioning portion 604 is a positioning protrusion and the other is a positioning groove. The positioning protrusion and the positioning groove are positioned together.

[0065] Thus, the engagement of the first latch and the first slot not only ensures a simple, direct, and reliable connection between the first cover 701 and the box 60, preventing the cover 70 from loosening or detaching from the box 60, but also facilitates the installation and removal of the first cover 701, and allows for the inspection and replacement of the functional expansion control board 10 and other components within the box 60. The positioning engagement of the positioning protrusion and the positioning groove allows for quick determination of the installation position of the first cover 701 on the box 60, improving the installation efficiency and accuracy of the first cover 701.

[0066] Moreover, the entire installation process of the first cover 701 does not require the use of tools such as screwdrivers, nor does it require precise alignment of multiple screw holes, which simplifies the installation difficulty of the first cover 701 and improves installation efficiency.

[0067] Combination Figures 1-6 As shown, at least one side of the second cover portion 702 in the vertical direction is provided with a third latching portion 7021. The third latching portion 7021 is provided away from the first cover portion 701 in the horizontal direction. The box body 60 is provided with a fourth latching portion 605. One of the third latching portion 7021 and the fourth latching portion 605 is a second buckle, and the other is a second slot. The second buckle and the second slot engage with each other.

[0068] Specifically, the engagement of the second latch and the second slot not only ensures a simple, direct, and reliable connection between the second cover 702 and the housing 60, preventing the cover 70 from loosening or detaching from the housing 60, but also facilitates the installation and removal of the second cover 702, enabling maintenance and replacement of the functional expansion control board 10 and components within the housing 60. Furthermore, the entire installation process of the second cover 702 requires no screwdrivers or other tools, and eliminates the need for precise alignment of multiple screw holes, simplifying the installation process and improving efficiency.

[0069] Combination Figure 2 , Figure 5 , Figure 7 and Figure 8As shown, the function expansion control board 10 includes a first expansion control board 101 and a second expansion control board 102. The first expansion control board 101 and the second expansion control board 102 both extend in the front-back direction and are arranged perpendicular to each other. The first expansion control board 101 and the second expansion control board 102 are electrically connected to each other.

[0070] Specifically, the first expansion control board 101 and the second expansion control board 102 both extend in the front-to-back direction and are arranged perpendicular to each other. This can reduce the space occupied by the first expansion control board 101 and the second expansion control board 102 in the front-to-back direction, and improve the structural compactness and space utilization of the function expansion box 100.

[0071] Furthermore, the first expansion control board 101 and the second expansion control board 102 are electrically connected to each other. This allows the first expansion control board 101 and the second expansion control board 102 to integrate circuits and devices with different functions respectively. In turn, the electrical connection between the first expansion control board 101 and the second expansion control board 102 can achieve functional complementarity and synergy. This can not only improve the complexity of the function expansion box 100, but also reduce the circuit density and load pressure on a single function expansion control board 10, and reduce the failure risk of the function expansion control board 10.

[0072] In addition, the electrical connection wires are uniformly led out from the second expansion control board 102, which can simplify the wiring layout inside the function expansion box 100 and avoid messy wiring inside the function expansion box 100.

[0073] It should be noted that, Figure 2 The width and thickness directions are referenced to the installation position of the first expansion control board 101, and only represent the width and thickness directions of the first expansion control board 101. The width and thickness directions of the second expansion control board 102 are still based on its own width and thickness directions.

[0074] Combination Figure 2 and Figure 3 As shown, the function expansion control board 10 includes at least one of a display screen control board, a human sensor control board, and a voice control board. Specifically, by allowing the function expansion control board 10 to integrate one or more of the display screen control board, human sensor control board, and voice control board, not only can the flexibility of the control box be improved, enabling the control box to flexibly configure corresponding functional modules according to actual application scenarios and actual needs, but it can also facilitate the maintenance and improvement of the display screen control board, human sensor control board, and voice control board.

[0075] In some embodiments of this utility model, a temperature and humidity sensor is provided on the outer wall of the front side of the function expansion box 100 so that the temperature and humidity sensor can directly contact the air in the environment, thereby monitoring the temperature and humidity in the environment in real time and accurately, which can help improve the intelligent settings of the indoor unit of the air conditioner.

[0076] The indoor unit of the air conditioner according to this utility model mainly includes the aforementioned electrical control box. Specifically, because the electrical control box has a simpler and more reliable structure, is easier to assemble, and has good stability, applying the electrical control box to the indoor unit of the air conditioner can not only improve the assembly efficiency of the indoor unit, but also improve the structural stability of the indoor unit.

[0077] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0078] 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., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0079] Although embodiments of the present 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 present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electrical control box, wherein a main control board is disposed therein, the main control board being adapted to be electrically connected to relevant electrical components in an air conditioner; Its features are, The electrical control box includes: The main body box contains the main control board; A function expansion box is disposed on one side of the main control board. The function expansion box contains at least one function expansion control board, which is electrically connected to relevant electrical components in the air conditioner; and / or the function expansion control board is electrically connected to the main control board. The function expansion box contains an installation plate. The first side of the function expansion control plate in the thickness direction is placed on the installation plate. The function expansion box contains a limit block and an elastic buckle. The limit block and the elastic buckle are both arranged opposite to the installation plate. The second side of the function expansion control plate in the thickness direction is limited by the limit block and elastically engaged with the elastic buckle.

2. The electrical control box according to claim 1, characterized in that, The limiting block is disposed opposite to at least one end of the functional expansion control board along its length and is engaged with it in a limiting manner. The elastic buckle is spaced apart from the limiting block along the length of the functional expansion control board and is elastically engaged with the functional expansion control board.

3. The electrical control box according to claim 1, characterized in that, The mounting plate is provided with a plurality of guide limiting pieces, which are spaced apart along the circumference of the functional expansion control plate. In the direction that gradually approaches the mounting plate along the thickness direction of the functional expansion control plate, the distance between the guide limiting pieces on both sides of the functional expansion control plate in the length direction gradually decreases. And / or the distance between the guide limiting pieces on both sides of the width direction of the function expansion control board gradually decreases to guide and limit the function expansion control board.

4. The electrical control box according to claim 3, characterized in that, The guide limiting piece includes a guide portion and an abutting portion. The abutting portion is connected between the guide portion and the mounting plate, and the abutting portion abuts against a first side of the functional expansion control plate in the thickness direction. In the direction that gradually approaches the mounting plate along the thickness direction of the functional expansion control board, the distance between the guide portions on both sides of the length direction of the functional expansion control board gradually decreases; and / or the distance between the guide portions on both sides of the width direction of the functional expansion control board gradually decreases.

5. The electrical control box according to claim 1, characterized in that, The functional expansion box includes: The box body is open on one side in the left-right direction and one side in the up-down direction to form a first open side and a second open side; The cover is snapped into the box body and covers the first open side and the second open side.

6. The electrical control box according to claim 5, characterized in that, The cover includes: A first cover portion, the first cover portion covering the first open side; The second cover portion covers the second open side. One side of the first cover portion in the vertical direction is connected to the second cover portion. The side of the first cover portion in the vertical direction away from the second cover portion is provided with a first snap-fit ​​portion and a first positioning portion. The box body is provided with a second snap-fit ​​portion and a second positioning portion. One of the first latching part and the second latching part is a first buckle and the other is a first slot. The first buckle and the first slot engage with each other. One of the first positioning part and the second positioning part is a positioning protrusion and the other is a positioning groove. The positioning protrusion and the positioning groove engage with each other.

7. The electrical control box according to claim 6, characterized in that, The second cover portion has a third latching portion on at least one side in the vertical direction. The third latching portion is located away from the first cover portion in the horizontal direction. The box body has a fourth latching portion. One of the third latching portion and the fourth latching portion is a second buckle, and the other is a second slot. The second buckle and the second slot engage with each other.

8. The electrical control box according to claim 1, characterized in that, The functional expansion control board includes a first expansion control board and a second expansion control board. The first expansion control board and the second expansion control board both extend in the front-back direction and are arranged perpendicular to each other. The first expansion control board and the second expansion control board are electrically connected to each other.

9. The electrical control box according to claim 1, characterized in that, The functional expansion control board includes at least one of a display screen control board, a human sensor control board, and a voice control board.

10. An indoor unit of an air conditioner, characterized in that, include: The electrical control box according to any one of claims 1-9.

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