Wall-mounted air conditioner indoor unit

Abstract

This utility model provides a wall-mounted air conditioner indoor unit, belonging to the field of air conditioning technology. The wall-mounted air conditioner indoor unit includes: a casing, which includes a base; a cross-flow fan, disposed on the base; an external rotor motor, disposed inside the casing and connected to one end of the cross-flow fan; a motor bracket, connected to the base, the motor bracket being sleeved on the outside of a portion of the external rotor motor; an elastic locking part, disposed at the end of the motor bracket away from the cross-flow fan; a motor cover, the outer periphery of which has a first locking part, the first locking part being adapted to connect with the elastic locking part; an anti-disassembly component, which is locked on the elastic deformation stroke of the elastic locking part; when the anti-disassembly component is installed, the anti-disassembly component restricts the elastic deformation of the elastic locking part to prevent the elastic locking part from separating from the first locking part, thereby improving assembly firmness; after the anti-disassembly component is removed, the elastic locking part can be pried and undergo elastic deformation, causing the elastic locking part to separate from the first locking part, thereby removing the motor cover and improving maintenance efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning technology, and in particular relates to a wall-mounted air conditioner indoor unit. Background Technology

[0002] As the indoor unit of a split-type air conditioning system, the wall-mounted air conditioner indoor unit is mainly used for indoor air circulation and heat exchange. A typical wall-mounted air conditioner indoor unit includes core components such as a casing, an indoor heat exchanger, a cross-flow fan, and a drive motor. The casing includes a base on which the indoor heat exchanger is fixedly mounted for heat exchange with the flowing air. The cross-flow fan extends along the length of the casing and is located on the base, on the leeward side of the indoor heat exchanger. Driven by the motor, it rotates to create airflow circulation, thus achieving the air conditioning function in the room.

[0003] Currently, most drive motors are external rotor motors, which consist of a stator and an external rotor with spacer rings located outside the stator. The external rotor motor is directly connected to the axial end of the cross-flow fan. The stator of the external rotor motor is fixed to the base by a motor bracket, which is fitted over the stator to provide support. To facilitate axial removal of the motor without disassembling the indoor heat exchanger during after-sales maintenance, the end of the motor bracket away from the cross-flow fan usually uses a removable motor cover structure.

[0004] In existing technologies, motor covers and motor brackets generally employ a snap-fit ​​structure for quick connection. While snap-fit ​​structures offer advantages in terms of ease of maintenance, they present an inherent technical contradiction: to ensure ease of assembly and disassembly, the fit margin of the snap-fit ​​structure needs to be controlled at a high level; however, when the fit margin is too large, the elastic snap-fit ​​portion of the structure is prone to elastic deformation under the impact load of drops during air conditioner transportation, leading to disengagement, causing the motor cover to loosen, the external rotor motor to fail to be fixed, and consequently affecting the normal performance of the product. Although related technologies can improve the reliability of the snap-fit ​​by adjusting the dimensions of the snap-fit ​​structure or increasing the interference fit, this directly leads to disassembly difficulties and reduces after-sales maintenance efficiency. Therefore, how to balance maintenance convenience while ensuring transportation reliability is a pressing technical problem that needs to be solved in this field. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, This utility model provides a wall-mounted air conditioner indoor unit, which includes: The housing includes a base; An indoor heat exchanger, mounted on the base, is used to exchange heat with the air inside the casing; A cross-flow fan is mounted on the base and located on the leeward side of the indoor heat exchanger, and the cross-flow fan extends along the length of the casing. An external rotor motor, disposed within the housing and connected to one axial end of the cross-flow fan, the external rotor motor comprising: stator; The outer rotor has a spacer ring disposed around the periphery of the stator; A motor bracket is connected to the base and is located outside the external rotor motor for mounting the external rotor motor. An elastic snap-fit ​​part is provided at the end of the motor bracket away from the cross-flow fan; The motor cover has a first snap-fit ​​portion on its outer periphery. The first snap-fit ​​portion is adapted to and connected with the elastic snap-fit ​​portion so that the motor cover is placed on the end of the motor bracket to fix the outer rotor motor. The anti-disassembly component is positioned on the elastic deformation stroke of the elastic locking part; When the anti-disassembly component is installed, it restricts the elastic locking portion from elastically deforming, thereby preventing the elastic locking portion from disengaging from the first locking portion. After the anti-tampering component is removed, the elastic locking part can be pried open and undergo elastic deformation, causing the elastic locking part to separate from the first locking part, so as to remove the motor cover.

[0006] The above technical solution has the following advantages or beneficial effects: By adapting the elastic locking part to the first locking part, the motor cover can be "quickly installed" and "quickly removed," avoiding the problems of cumbersome operation, time-consuming and labor-intensive operation, and strong tool dependence caused by the use of screws and other fasteners in related technologies, significantly improving the efficiency of production assembly lines and after-sales maintenance. By setting a detachable anti-disassembly part, the elastic locking part is locked during transportation and use, physically blocking the deformation space of the elastic locking part, eliminating the risk of disengagement, and improving the locking firmness of the motor cover. During maintenance, the anti-disassembly part can be removed, and the elastic locking part can be freely moved to make it elastically deformed, so as to easily remove the motor cover and take out the outer rotor motor from the side. It takes into account both reliability and maintenance convenience, perfectly solving the contradiction between "reliable fixation" and "convenient disassembly."

[0007] According to embodiments of this disclosure, the resilient snap-fit ​​portion includes: An elastic arm, one end of which is fixed to the motor bracket, is elastically deformable relative to the motor bracket in the radial direction of the motor bracket; A first slot is provided through the elastic arm for the first snap-fit ​​part to be inserted and fastened.

[0008] The above technical solution has the following advantages or beneficial effects: the elastic snap-fit ​​part is designed as an elastic arm with a first snap-fit ​​groove fixed to the motor bracket. The structure is simple and the elastic deformation path is clear. It not only ensures the snap-fit ​​strength, but also makes the elastic deformation controllable, thereby improving the durability and repeated disassembly and assembly life of the elastic snap-fit ​​part.

[0009] According to an embodiment of this disclosure, the first snap-fit ​​portion is a protrusion on the motor cover, and the protrusion is inserted into the first slot to limit the displacement of the motor cover in the axial direction of the cross-flow fan.

[0010] The above technical solution has the following advantages or beneficial effects: the protrusion of the motor cover and the first slot on the elastic arm are engaged to form a clear axial limiting structure, which significantly enhances the axial fixing ability of the motor cover on the motor and further improves the positional stability of the external rotor motor under transportation and working vibration conditions.

[0011] According to an embodiment of this disclosure, the indoor unit of the wall-mounted air conditioner further includes a motor cover, which is connected to the base to define a motor mounting cavity, and the external rotor motor and the motor bracket are housed within the motor mounting cavity.

[0012] The above technical solution has the following advantages or beneficial effects: by setting up a motor guard to protect the outer rotor motor and motor bracket from the outside, the electrical safety and protection level of the outer rotor motor are improved. According to an embodiment of this disclosure, one end of the anti-tampering component is inserted into the gap between the motor cover and the motor bracket along the axial direction of the cross-flow fan.

[0013] The above technical solution has the following advantages or beneficial effects: one end of the anti-disassembly component is axially inserted into the gap between the motor cover and the motor bracket to form a root fixation, which improves the ease of installation of the anti-disassembly component and can accurately block the opening stroke of the elastic snap-fit ​​part.

[0014] According to an embodiment of this disclosure, the elastic locking portion is provided with a second locking groove near the actuating end, and the anti-tampering component is adapted to and locked into the second locking groove through a limiting locking portion.

[0015] The above technical solution has the following advantages or beneficial effects: a second slot is provided on the elastic snap-fit ​​part to form a snap-fit ​​engagement with the limiting snap-fit ​​part of the anti-disassembly part, which improves the anti-disassembly part's ability to resist falling off under harsh transportation conditions, while the snap-fit ​​method facilitates the installation and disassembly of the anti-disassembly part.

[0016] According to an embodiment of this disclosure, the other end of the tamper-evident component wraps around the actuating end of the elastic latching portion, and the tamper-evident component is an integrally formed structure comprising: The main body extends along the axial direction of the cross-flow fan and is located on the side of the elastic snap-fit ​​portion away from the motor cover; A limiting part is disposed opposite to the main body part, and the limiting part is provided with the limiting engagement part on the side of the limiting part facing the main body; A connecting portion is connected to the end of the main body and the limiting portion away from the cross-flow fan to form a receiving groove that encloses the toggle end.

[0017] The above technical solution has the following advantages or beneficial effects: the other end of the anti-tamper component wraps around the movable end of the elastic locking part to form a limit, making the installation of the anti-tamper component more stable and reliable, less prone to falling off, and improving the anti-detachment performance. The one-piece molded anti-tamper component has strong structural strength and reduces manufacturing costs. By optimizing the structure of the anti-tamper component, it can effectively limit the elastic deformation of the elastic locking part and facilitate disassembly and assembly.

[0018] According to an embodiment of this disclosure, a slide rail is provided on the side of the elastic snap-fit ​​portion away from the motor cover, the slide rail extending along the axial direction of the cross-flow fan and slidably connected to the anti-disassembly component.

[0019] The above technical solution has the following advantages or beneficial effects: by setting up a slide rail, the anti-disassembly component can slide into the installation position along the slide rail, realizing guided assembly, avoiding the problem of blind assembly and positioning difficulties, improving assembly efficiency and accuracy, and reducing the operation difficulty of assembly workers.

[0020] According to an embodiment of this disclosure, a first guide surface is provided on the opposite side walls of the slide at the end away from the cross-flow fan, and a second guide surface adapted to the first guide surface is provided on the opposite side walls of the anti-disassembly member.

[0021] The above technical solution has the following advantages or beneficial effects: by setting a matching first guide surface and second guide surface, the anti-disassembly component can be guided smoothly into the slide, reducing the assembly difficulty.

[0022] According to embodiments of this disclosure, a wall-mounted air conditioner indoor unit is also provided, comprising: The housing includes a base; An indoor heat exchanger, mounted on the base, is used to exchange heat with the air inside the casing; A cross-flow fan is mounted on the base and located on the leeward side of the indoor heat exchanger, and the cross-flow fan extends along the length of the casing. An external rotor motor, disposed within the housing and connected to one axial end of the cross-flow fan, the external rotor motor comprising: stator; The outer rotor has a spacer ring disposed around the periphery of the stator; A motor bracket is connected to the base and is located outside the external rotor motor for mounting the external rotor motor. The second snap-fit ​​part is located at the end of the motor bracket away from the cross-flow fan; The motor cover has a first snap-fit ​​portion on its outer periphery. The first snap-fit ​​portion and the second snap-fit ​​portion are adapted to be connected so that the motor cover is placed on the end of the motor bracket to fix the outer rotor motor. Among them, one of the first snap-fit ​​portion and the second snap-fit ​​portion is an elastic snap-fit ​​portion. The anti-disassembly component is positioned on the elastic deformation stroke of the elastic locking part; When the anti-disassembly component is installed, it restricts the elastic deformation of the elastic locking portion to prevent the second locking portion from disengaging from the first locking portion. After the anti-tampering component is removed, the elastic locking part can be pried open and undergo elastic deformation, causing the second locking part to separate from the first locking part, so as to remove the motor cover.

[0023] The above technical solution has the following advantages or beneficial effects: By securing the anti-tamper component within the deformation stroke of the elastic locking part, dual-state control is achieved: when the anti-tamper component is installed, the deformation space of the elastic locking part is physically blocked, ensuring the reliability of the locking connection between the motor cover and the motor bracket during transportation and use, and eliminating the risk of disengagement; during maintenance, after removing the anti-tamper component, the elastic locking part can freely deform, allowing the motor cover to be easily disassembled and the outer rotor motor removed. This solution solves the inherent problems of reliability and convenience with minimal structural modifications (only adding a detachable anti-tamper component), balancing transportation safety and after-sales maintenance efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the appearance of a wall-mounted air conditioner indoor unit according to one embodiment of the present disclosure; Figure 2 This is a structural schematic diagram of a wall-mounted air conditioner indoor unit according to one embodiment of this disclosure; Figure 3 This is a cross-sectional view of a wall-mounted air conditioner indoor unit according to one embodiment of this disclosure; Figure 4 This is a schematic diagram of the structure of the cross-flow fan and motor bracket mounted on the base according to one embodiment of the present disclosure; Figure 5 This is a partial structural schematic diagram of a wall-mounted air conditioner indoor unit according to one embodiment of the present disclosure; Figure 6 This is a partial cross-sectional view of a wall-mounted air conditioner indoor unit according to one embodiment of the present disclosure; Figure 7This is a partial structural schematic diagram of a wall-mounted air conditioner indoor unit according to another embodiment of this disclosure; Figure 8 This is an assembly diagram of the motor bracket, motor cover, and anti-disassembly component according to one embodiment of this disclosure; Figure 9 This is a partial exploded view of the motor bracket, motor cover, and anti-disassembly components according to one embodiment of this disclosure; Figure 10 This is a structural schematic diagram of the motor bracket according to one embodiment of the present disclosure; Figure 11 This is a structural schematic diagram of the anti-disassembly component according to one embodiment of the present disclosure.

[0025] In the above figures: indoor unit of wall-mounted air conditioner 100; casing 1; base 11; outer cover 12; air inlet 13; air outlet 14; indoor heat exchanger 2; cross-flow fan 3; external rotor motor 4; motor bracket 5; slot 51; motor cover 6; elastic snap-fit ​​part 7; elastic arm 71; first slot 72; third guide surface 73; second slot 74; protruding ridge 75; first guide surface 751; first snap-fit ​​part 8; anti-disassembly part 9; body part 91; limiting part 92; connecting part 93; limiting snap-fit ​​part 94; second guide surface 95; motor cover 10. Detailed Implementation

[0026] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0027] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0028] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The wall-mounted air conditioner indoor unit 100 provided in this utility model embodiment can have various implementation forms, as detailed below. Figures 1-11 The indoor unit 100 of the wall-mounted air conditioner is described.

[0032] It should be noted that the indoor unit 100 of the wall-mounted air conditioner is the indoor unit of the air conditioner. The indoor unit 100 is installed indoors and is used for heat exchange with the indoor environment. In addition, the air conditioner also includes an outdoor unit, which is usually installed outdoors and is used to carry the heat from indoors to outdoors.

[0033] refer to Figure 1 The wall-mounted air conditioner indoor unit 100 may include a housing 1. The housing 1 is disposed at the top of the room or in the upper space of the room, with the front side of the housing 1 facing the user and the rear side of the housing 1 facing the wall, and is suitable for connection to the wall.

[0034] The casing 1 forms the overall appearance of the wall-mounted air conditioner indoor unit 100. The casing 1 is rectangular, with the left and right ends being the two ends of the casing 1 along its own length.

[0035] The casing 1 has an internal accommodating space. This space is used to house and fix various components in the wall-mounted air conditioner indoor unit 100, which can prevent external objects from colliding with the various components inside the casing 1, thereby improving the reliability of the wall-mounted air conditioner indoor unit 100 during transportation or installation.

[0036] Continue to refer to Figure 1 The housing 1 may include an air inlet 13. The air inlet 13 is connected to the housing space and serves as the inlet for external air to flow into the housing 1, allowing indoor air to enter the housing space through the air inlet 13.

[0037] refer to Figure 2The housing 1 may include an air outlet 14. The air outlet 14 is connected to the receiving space and serves as an outlet for airflow within the housing 1, allowing airflow within the receiving space to flow out through the air outlet 14.

[0038] In some embodiments of this application, the air inlet 13 can be located at the top of the housing 1. The air outlet 14 can be located at the bottom front side of the housing 1. The air outlet 14 is elongated and extends along the length of the housing 1, improving the aesthetics of the wall-mounted air conditioner indoor unit 100. When the wall-mounted air conditioner indoor unit 100 is operating, it draws air in from the top and discharges air towards the bottom front side, facilitating installation.

[0039] It should be noted that the directions described in the text are based on the direction in which the user faces the indoor unit 100 of the wall-mounted air conditioner. Specifically, the side of the indoor unit 100 facing the user when in use is defined as the front side, and the opposite side is defined as the rear side. The left and right sides are distinguished by the direction in which the user faces the indoor unit 100 of the wall-mounted air conditioner.

[0040] In some embodiments of this application, reference is made to Figure 3 The indoor unit 100 of the air conditioner may include an indoor heat exchanger 2. The indoor heat exchanger 2 extends along the length of the casing 1, is disposed within the housing space and located inside the air inlet 13, and is used to exchange heat with the airflow entering the casing 1 through the air inlet 13.

[0041] In some embodiments of this application, reference continues to be made to Figure 3 The indoor unit 100 of the air conditioner may include a cross-flow fan 3.

[0042] The cross-flow fan 3 is installed in the housing space and located on the leeward side of the indoor heat exchanger 2. The axial direction of the cross-flow fan 3 extends along the length of the housing 1.

[0043] When the indoor unit 100 of the air conditioner is running, the indoor air enters the casing 1 through the air inlet 13 under the action of the cross-flow fan 3. The indoor air in the casing 1 flows through the indoor heat exchanger 2 for heat exchange. The heat exchanged airflow is discharged to the outside through the air outlet 14, thereby enabling the air conditioner to cool and heat, play a role in regulating the indoor temperature, and achieve the user's comfortable temperature.

[0044] refer to Figure 3 In some embodiments of this application, the housing 1 may include a base 11. The base 11 forms the rear side of the indoor air conditioning unit 100 and is adapted to be mounted on a wall.

[0045] Continue to refer to Figure 3 The housing 1 may include an outer cover 12. The outer cover 12 is mounted on the base 11, and a receiving space is formed between the outer cover 12 and the base 11.

[0046] The outer cover 12 is roughly rectangular frame-shaped. The rear side of the outer cover 12 is open, and the outer cover 12 covers the front side of the base 11 and is connected to the base 11 to form the housing 1. In this embodiment, the air inlet 13 and the air outlet 14 are both opened on the outer cover 12, and the indoor heat exchanger 2 and the cross-flow fan 3 are both installed on the base 11.

[0047] In some embodiments of this application, the outer cover 12 may be integrally formed. Of course, in other embodiments, the outer cover 12 may be divided into two parts.

[0048] In some embodiments of this application, the wall-mounted air conditioner indoor unit 100 may include an external rotor motor 4. (See reference...) Figure 4 , Figure 5 The external rotor motor 4 and the cross-flow fan 3 are arranged along the length of the casing 1. The external rotor motor 4 is connected to one end of the cross-flow fan 3 in the axial direction to drive the cross-flow fan 3 to rotate.

[0049] The external rotor motor 4 may include a stator and an external rotor with spacer rings disposed around the stator. The external rotor is connected to the cross-flow fan 3, and when the external rotor motor 4 is working, the external rotor rotates relative to the stator.

[0050] It should be noted that the specific structure of the external rotor motor 4 is existing technology and will not be described in detail here.

[0051] In some embodiments of this application, the wall-mounted air conditioner indoor unit 100 may include a motor bracket 5. The motor bracket 5 is connected to the base 11 for mounting the external rotor motor 4.

[0052] refer to Figure 5 The motor bracket 5 is located outside the external rotor motor 4. Specifically, the motor bracket 5 covers the outer periphery of the stator of the external rotor motor 4, and the stator is connected to the base 11 through the motor bracket 5. The connection method between the motor bracket 5 and the base 11 can be screwed, riveted, or snap-fitted. No specific limitation is made here on the connection method between the motor bracket 5 and the base 11.

[0053] In this embodiment, by setting the motor bracket 5, an independent support module can be formed, which facilitates the modular assembly and subsequent maintenance positioning of the external rotor motor 4.

[0054] The motor bracket 5 has a motor cavity formed inside. (Reference) Figure 5 The motor bracket 5 has an opening at the end away from the cross-flow fan 3, and the stator is installed in the motor cavity inside the motor bracket 5 through the opening.

[0055] In this embodiment, the opening is located at the end of the motor bracket 5 away from the cross-flow fan 3, which can form an axial installation channel, allowing the outer rotor motor 4 to be pushed into the motor cavity as a whole along the axial direction, simplifying the assembly action, and providing a path for the subsequent axial removal of the outer rotor motor 4.

[0056] In some embodiments of this application, reference is made to Figure 4 , Figure 5 The indoor unit 100 of the wall-mounted air conditioner may include a motor cover 6. Part of the motor cover 6 is embedded in the motor bracket 5 through an opening. The motor cover 6 and the motor bracket 5 are adapted to each other to cover the opening and fix the external rotor motor 4.

[0057] In this embodiment, the motor cover 6 is installed on the open end of the motor bracket 5, and can press the end face of the outer rotor motor 4 to achieve axial fixation. At the same time, the motor cover 6 can cover the open end, reduce the entry of foreign objects and dust into the motor cavity, avoid interfering with the operation of the outer rotor motor 4, thereby improving its safety protection level and operational reliability.

[0058] In some embodiments of this application, the motor cover 6 and the motor bracket 5 are connected by a snap-fit ​​structure. This snap-fit ​​structure improves assembly line efficiency, significantly enhances after-sales maintenance convenience, and reduces the difficulty of on-site service.

[0059] Specifically, refer to Figure 5 , Figure 6 The snap-fit ​​structure may include an elastic snap-fit ​​part 7, which is located at the end of the motor bracket 5 away from the cross-flow fan 3.

[0060] By placing the elastic snap-fit ​​part 7 at the far end of the cross-flow fan 3, the snap-fit ​​operation point is far away from the cross-flow fan 3, providing a large operating space for the hand during maintenance and avoiding interference with the cross-flow fan 3.

[0061] refer to Figure 6 The snap-fit ​​structure may include a first snap-fit ​​part 8, which is located on the outer periphery of the motor cover 6. The first snap-fit ​​part 8 is adapted to and connected with an elastic snap-fit ​​part 7, so that the motor cover 6 is placed on the end of the motor bracket 5 to fix the outer rotor motor 4. The first snap-fit ​​part 8 is located on the outer periphery of the motor cover 6, making the snap-fit ​​point close to the edge of the motor cover 6. This results in a short snap-fit ​​lever arm, even force distribution on the motor cover 6, and reduced warping. The outer periphery snap-fit ​​facilitates direct observation of the snap-fit ​​status, improving the first-time assembly success rate and maintenance identifiability.

[0062] In this embodiment, the elastic snap-fit ​​part 7 is adapted to connect with the first snap-fit ​​part 8, enabling quick installation and removal of the motor cover 6. Compared with the traditional fixing method using screws and other fasteners, this technical solution is simple to operate, saves time and effort, and does not rely on tools, significantly improving the efficiency of production assembly and after-sales maintenance.

[0063] After removing the motor cover 6, the outer rotor motor 4 can be removed along the axial direction of the motor bracket 5. The motor cover 6 is detachably connected to the motor bracket 5 via a snap-fit ​​structure. However, this design has the following inherent contradiction: to ensure ease of disassembly and assembly, the fit margin of the snap-fit ​​structure needs to be controlled at a high level; but if the fit margin is too large, it is prone to loosening under the impact load during transportation, causing the outer rotor motor 4 to fail to be fixed, thereby affecting the normal performance of the product.

[0064] In related technologies, in order to improve the fixing firmness of the external rotor motor 4, there are technical solutions that use fasteners such as bolts and screws to further fix the motor cover 6 and the motor bracket 5. However, such solutions have the following significant drawbacks: First, the assembly efficiency is low, making it difficult to meet the needs of large-scale production. Threaded connections require the use of special tools (such as screwdrivers and wrenches) to assemble one by one, which is time-consuming and cannot meet the high-frequency, fast-paced assembly requirements of air conditioning production lines, resulting in a significant increase in manufacturing costs.

[0065] Second, the after-sales service is inconvenient and the user experience is poor. Tools are required for disassembly during repairs, and the compact internal space of the air conditioner indoor unit makes it difficult to disassemble and reassemble threaded fasteners due to the limited operating angle, which significantly prolongs repair time and reduces the efficiency of after-sales service.

[0066] Third, the complexity of the structure and the increase in material costs. The assembly process requires additional bolts and other parts, which not only increases material costs, but also requires the forming of threaded holes or the pre-embedding of inserts on the motor cover 6 and the motor bracket 5, which increases the complexity of the mold and the cost of parts processing.

[0067] Fourth, the lifespan of the reusable parts is limited. Threads are prone to stripping after repeated disassembly and assembly, affecting the effectiveness of re-fixing after repair and reducing the maintainability and service life of the product.

[0068] To address the aforementioned technical problems, in some embodiments of this application, the wall-mounted air conditioner indoor unit 100 may include an anti-tampering component 9. (See reference...) Figures 4-6 The anti-disassembly component 9 is placed on the elastic deformation stroke of the elastic locking part 7 to limit the elastic deformation of the elastic locking part 7.

[0069] In this embodiment, the anti-disassembly component 9 blocks the deformation space of the elastic snap-fit ​​part 7 by physically occupying it, forming a rigid limit, so that the snap-fit ​​structure cannot be disengaged under transportation impact, fundamentally solving the contradiction between reliability and convenience.

[0070] Specifically, when the anti-disassembly component 9 is installed, the anti-disassembly component 9 restricts the elastic locking portion 7 from elastic deformation, so as to prevent the elastic locking portion 7 from disengaging from the first locking portion 8.

[0071] After the anti-tampering part 9 is removed, the elastic locking part 7 can be moved and undergo elastic deformation, so that the elastic locking part 7 is separated from the first locking part 8, so as to remove the motor cover 6 and facilitate the maintenance of the outer rotor motor 4.

[0072] In this embodiment, a detachable anti-disassembly component 9 is provided to lock the elastic locking part 7 during transportation and use, physically blocking its deformation space, eliminating the risk of disengagement, and improving the locking firmness of the motor cover 6. During maintenance, removing the anti-disassembly component 9 allows the elastic locking part 7 to be freely moved to undergo elastic deformation, easily removing the motor cover 6 and taking out the outer rotor motor 4 from the side. This design balances reliability and maintenance convenience, perfectly resolving the contradiction between "reliable fixation" and "easy disassembly."

[0073] In some embodiments of this application, the first snap-fit ​​portion 8 and the motor cover 6 are integrally injection molded, and the motor bracket 5 and the elastic snap-fit ​​portion 7 are integrally injection molded. This helps to reduce the number of parts, simplify the molding process of related molds, and at the same time improve the versatility of molds, reduce manufacturing costs and assembly errors.

[0074] Furthermore, to improve the installation stability of the external rotor motor 4, multiple elastic snap-fit ​​parts 7 can be provided, and similarly, multiple first snap-fit ​​parts 8 are also provided. The multiple first snap-fit ​​parts 8 correspond one-to-one with the multiple elastic snap-fit ​​parts 7 and are adapted to connect, so that the motor cover 6 and the motor bracket 5 form multi-point constraints, which significantly improves the overall rigidity and impact resistance of the snap-fit ​​structure and prevents the motor cover 6 from loosening due to single-point failure.

[0075] In some embodiments of this application, the resilient latching portion 7 may include a resilient arm 71. (See reference...) Figure 9 One end of the elastic arm 71 is fixed on the motor bracket 5, and the other end is a free end. The elastic arm 71 can undergo elastic deformation relative to the motor bracket 5 along the radial direction of the motor bracket 5.

[0076] In this embodiment, the free end serves as the actuating end. The use of the elastic arm 71 makes the deformation path of the elastic locking part 7 clear and controllable, the fixed end has high strength and is not easy to break, and the free end serves as the actuating end, which is convenient for manual operation during maintenance, thus achieving a balance between elasticity and strength.

[0077] The elastic locking part 7 may include a first locking groove 72, which is disposed through the elastic arm 71 for the first locking part 8 to be inserted and fastened. The first locking part 8 is engaged with the first locking groove 72 that passes through the elastic arm 71. The structure is simple and the elastic deformation path is clear, which not only ensures the locking strength, but also makes the elastic deformation controllable, thereby improving the durability and repeated disassembly and assembly life of the elastic locking part 7.

[0078] In some embodiments of this application, the first snap-fit ​​portion 8 may be a protrusion on the motor cover 6, which is inserted into the first snap-fit ​​groove 72 to limit the displacement of the motor cover 6 in the axial direction of the cross-flow fan 3.

[0079] In this embodiment, the protrusion of the motor cover 6 is engaged with the first slot 72 on the elastic arm 71 to form a clear axial limiting structure, which significantly enhances the axial fixing ability of the motor cover 6 to the motor and further improves the positional stability of the external rotor motor 4 under transportation and working vibration conditions.

[0080] In some embodiments of this application, at least one side of the elastic arm 71 is provided with a slot 51. By providing the slot 51, a portion of the peripheral wall of the motor bracket 5 where the elastic arm 71 is located becomes elastic, thereby improving the elasticity of the elastic arm 71 and facilitating the motor cover 6 with the protrusion to be at least partially embedded in the motor bracket 5, thus realizing the press assembly of the motor cover 6.

[0081] The slot 51 can be formed by a recess in the open end of the motor bracket 5, facing towards the cross-flow fan 3. (Reference) Figure 9 The slot 51 is provided on the motor bracket 5 and located on both sides of the elastic arm 71. The depth of the slot 51 is set according to the actual structure.

[0082] In this embodiment, when the motor cover 6 is inserted into the motor bracket 5 through the opening, the protruding part squeezes the elastic arm 71. Through the elastic deformation of the elastic arm 71, the protruding part squeezes through the opening end and smoothly enters the first slot 72, thereby making the protruding part engage in the first slot 72.

[0083] In some embodiments of this application, reference is made to Figure 10 A third guide surface 73 is provided on the side of the elastic snap-fit ​​part 7 facing the motor cover 6, and the third guide surface 73 is located near the actuating end of the elastic snap-fit ​​part 7.

[0084] A fourth guide surface is provided on the protrusion, which is located on the side wall of the protrusion facing the cross-flow fan 3. The third guide surface 73 and the fourth guide surface cooperate to guide each other, so that the motor cover 6 can be assembled into place under pressure, reducing the assembly difficulty and thus improving the assembly efficiency of the air conditioner indoor unit.

[0085] In some embodiments of this application, reference is made to Figure 7 The wall-mounted air conditioner indoor unit 100 may include a motor cover 10, which, together with the base, defines a motor mounting cavity. The external rotor motor 4 and the motor bracket 5 are housed within the motor mounting cavity.

[0086] In this embodiment, by providing a motor cover 10, the outer rotor motor 4 and the motor bracket 5 are protected from the outside, thereby improving the electrical safety and protection level of the outer rotor motor 4. In some embodiments of this application, one end of the anti-disassembly member 9 is inserted into the gap between the motor cover 10 and the motor bracket 5 along the axial direction of the cross-flow fan 3.

[0087] Furthermore, the other end of the anti-tamper component 9 can wrap around the actuating end of the elastic latching part 7. The two ends of the anti-tamper component 9 are positioned opposite each other along the axial direction of the cross-flow fan 3.

[0088] In this embodiment, the anti-disassembly component 9 adopts a dual-point fixing method of axial insertion and end wrapping. One end is axially inserted into the gap between the motor cover 10 and the motor bracket 5 to form a root fixation, and the other end is wrapped around the actuating end of the elastic locking part 7 to form a limit and self-locking. This fixing method makes the anti-disassembly component 9 installed firmly and reliably, and it is not easy to fall off. It can also accurately block the prying stroke of the elastic locking part 7, thus strengthening the anti-disassembly function of the anti-disassembly component 9 in the installed state.

[0089] In some embodiments of this application, the elastic snap-fit ​​part 7 is provided with a second snap-fit ​​groove 74 near the toggle end, and the anti-tampering member 9 is adapted to snap-fit ​​with the second snap-fit ​​groove 74 through the limiting snap-fit ​​part 94.

[0090] In this embodiment, a second slot 74 is provided on the elastic locking part 7 to form a locking engagement with the limiting locking part 94 of the anti-disassembly part 9, increasing axial and radial constraints and improving the anti-disassembly part 9's resistance to detachment under harsh transportation conditions. Furthermore, this locking method also facilitates the installation and removal of the anti-disassembly part 9.

[0091] refer to Figure 9 The second slot 74 is positioned away from the cross-flow fan 3 relative to the first slot 72. The size of the first slot 72 and the first snap-fit ​​part 8 is larger than the size of the second slot 74, so as to prevent the first snap-fit ​​part 8 from getting stuck in the second slot 74 during the pressing of the motor cover 6.

[0092] In this embodiment, the dual differentiation in position and size between the first slot 72 and the second slot 74 prevents the motor cover 6 from being mistakenly inserted into the second slot 74 during assembly. This prevents assembly failure or insufficient clamping strength, ensures that the clamping process does not interfere with each other, and improves the success rate of assembly on the first attempt.

[0093] In some embodiments of this application, the tamper-evident component 9 can be a one-piece molded structure. The one-piece molded tamper-evident component 9 not only has strong structural strength but also reduces the number of parts and assembly steps, thus lowering manufacturing costs.

[0094] refer to Figure 11The anti-tamper component 9 may include a body portion 91, which extends along the axial direction of the cross-flow fan 3. The body portion 91 is located on the side of the elastic snap-fit ​​portion 7 away from the motor cover 6.

[0095] The main body 91 serves as the main support for the anti-disassembly component 9 and extends axially to bridge the gap between the motor cover 10 and the elastic snap-fit ​​part 7. It is located on the side of the elastic snap-fit ​​part 7 away from the motor cover 6 to avoid interfering with the assembly of the motor cover 6.

[0096] The anti-tampering component 9 may include a limiting part 92, which is disposed opposite to the main body 91. The main body 91 and the limiting part 92 are located on opposite sides of the elastic locking part 7.

[0097] A limiting engagement part 94 is provided on the side of the limiting part 92 facing the main body, and the limiting engagement part 94 is adapted to be connected in the second slot 74.

[0098] The anti-tampering component 9 may include a connecting portion 93, which is connected to the end of the main body 91 and the limiting portion 92 that is away from the cross-flow fan 3. The main body 91, the connecting portion 93, and the limiting portion 92 are enclosed to form a receiving groove that encloses the toggle end.

[0099] By optimizing the structure of the anti-disassembly component 9, it can effectively limit the elastic deformation of the elastic locking part 7 and facilitate disassembly and assembly.

[0100] In some embodiments of this application, a slide rail is provided on the side of the elastic snap-fit ​​portion 7 away from the motor cover 6, and the slide rail extends along the axial direction of the cross-flow fan 3. The slide rail is used to allow the anti-tamper component 9 to slide along its own extending direction.

[0101] In this embodiment, the slide rail is slidably connected to the anti-disassembly component 9. By setting the slide rail, the anti-disassembly component 9 can slide into the installation position along the slide rail, realizing guided assembly, avoiding the problem of blind assembly and positioning difficulties, improving assembly efficiency and accuracy, and reducing the operation difficulty for assembly workers.

[0102] For example, refer to Figure 11 The slide can be formed by two opposing protrusions 75 protruding from the elastic snap-fit ​​portion 7.

[0103] In some embodiments of this application, a first guide surface 751 is provided on the opposite side walls of the slide away from the cross-flow fan, and a second guide surface 95 adapted to the first guide surface 751 is provided on the opposite side walls of the anti-disassembly member 9.

[0104] By setting a matching first guide surface 751 and second guide surface 95, the anti-disassembly component 9 can be guided smoothly into the slide, reducing the assembly difficulty.

[0105] In some other embodiments, the wall-mounted air conditioner indoor unit 100 may include a first snap-fit ​​portion 8 and a second snap-fit ​​portion. The second snap-fit ​​portion is located at the end of the motor bracket 5 away from the cross-flow fan 3, and the first snap-fit ​​portion 8 is located on the outer periphery of the motor cover 6. The first snap-fit ​​portion 8 and the second snap-fit ​​portion are adapted to be connected so that the motor cover 6 covers the end of the motor bracket 5 to fix the external rotor motor 4. One of the first snap-fit ​​portion 8 and the second snap-fit ​​portion is a resilient snap-fit ​​portion 7.

[0106] Furthermore, the wall-mounted air conditioner indoor unit 100 may include an anti-disassembly member 9, which is engaged within the elastic deformation stroke of the elastic locking portion 7. With the anti-disassembly member 9 installed, it restricts the elastic deformation of the elastic locking portion 7 to prevent the second locking portion from disengaging from the first locking portion 8. After the anti-disassembly member 9 is removed, the elastic locking portion 7 can be pried open and undergo elastic deformation, causing the second locking portion to separate from the first locking portion 8, thereby allowing the motor cover 6 to be removed.

[0107] In this embodiment, a dual-state control is achieved by inserting an anti-disassembly piece 9 along the deformation stroke of the elastic locking part 7. When the anti-disassembly piece 9 is installed, it physically blocks the deformation space of the elastic locking part 7, ensuring the reliability of the engagement between the motor cover 6 and the motor bracket 5 during transportation and use, and eliminating the risk of disengagement. During maintenance, after removing the anti-disassembly piece 9, the elastic locking part 7 can be freely moved and deformed, allowing the motor cover 6 to be easily disassembled and the outer rotor motor 4 to be removed. This solution solves the inherent problems of reliability and convenience with minimal structural modifications (only adding a detachable anti-disassembly piece 9), balancing transportation safety and after-sales maintenance efficiency.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0109] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A wall-mounted air conditioner indoor unit, characterized in that, include: The housing includes a base; An indoor heat exchanger, mounted on the base, is used to exchange heat with the air inside the casing; A cross-flow fan is mounted on the base and located on the leeward side of the indoor heat exchanger, and the cross-flow fan extends along the length of the casing. An external rotor motor, disposed within the housing and connected to one axial end of the cross-flow fan, the external rotor motor comprising: stator; The outer rotor has a spacer ring disposed around the periphery of the stator; A motor bracket is connected to the base and is located outside the external rotor motor for mounting the external rotor motor. An elastic snap-fit ​​part is provided at the end of the motor bracket away from the cross-flow fan; The motor cover has a first snap-fit ​​portion on its outer periphery. The first snap-fit ​​portion is adapted to and connected with the elastic snap-fit ​​portion so that the motor cover is placed on the end of the motor bracket to fix the outer rotor motor. The anti-disassembly component is positioned on the elastic deformation stroke of the elastic locking part; When the anti-disassembly component is installed, it restricts the elastic locking portion from elastically deforming, thereby preventing the elastic locking portion from disengaging from the first locking portion. After the anti-tampering component is removed, the elastic locking part can be pried open and undergo elastic deformation, causing the elastic locking part to separate from the first locking part, so as to remove the motor cover.

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The elastic snap-fit ​​portion includes: An elastic arm, one end of which is fixed to the motor bracket, is elastically deformable relative to the motor bracket in the radial direction of the motor bracket; A first slot is provided through the elastic arm for the first snap-fit ​​part to be inserted and fastened.

3. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that, The first snap-fit ​​portion is a protrusion on the motor cover, which is inserted into the first slot to limit the displacement of the motor cover in the axial direction of the cross-flow fan.

4. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, It also includes a motor cover, which, together with the base, defines a motor mounting cavity, and the external rotor motor and the motor bracket are housed within the motor mounting cavity.

5. The wall-mounted air conditioner indoor unit according to claim 4, characterized in that, One end of the anti-tampering component is inserted into the gap between the motor cover and the motor bracket along the axial direction of the cross-flow fan.

6. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, The elastic locking part is provided with a second locking groove near the toggle end, and the anti-tampering part is adapted to and locked with the second locking groove through the limiting locking part.

7. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that, The other end of the tamper-proof component wraps around the actuating end of the elastic latching portion, and the tamper-proof component is an integrally molded structure comprising: The main body extends along the axial direction of the cross-flow fan and is located on the side of the elastic snap-fit ​​portion away from the motor cover; A limiting part is disposed opposite to the main body part, and the limiting part is provided with the limiting engagement part on the side of the limiting part facing the main body; A connecting portion is connected to the end of the main body and the limiting portion away from the cross-flow fan to form a receiving groove that encloses the toggle end.

8. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, A slide rail is provided on the side of the elastic snap-fit ​​part away from the motor cover. The slide rail extends along the axial direction of the cross-flow fan and is slidably connected to the anti-disassembly component.

9. The wall-mounted air conditioner indoor unit according to claim 8, characterized in that, The slide rail has a first guide surface on each of its opposite side walls at the end furthest from the cross-flow fan, and the anti-disassembly component has a second guide surface on each of its opposite side walls that is adapted to the first guide surface.

10. A wall-mounted air conditioner indoor unit, characterized in that, include: The housing includes a base; An indoor heat exchanger, mounted on the base, is used to exchange heat with the air inside the casing; A cross-flow fan is mounted on the base and located on the leeward side of the indoor heat exchanger, and the cross-flow fan extends along the length of the casing. An external rotor motor, disposed within the housing and connected to one axial end of the cross-flow fan, the external rotor motor comprising: stator; The outer rotor has a spacer ring disposed around the periphery of the stator; A motor bracket is connected to the base and is sleeved on the outside of the external rotor motor for mounting the external rotor motor. The second snap-fit ​​portion is located at the end of the motor bracket away from the cross-flow fan; The motor cover has a first snap-fit ​​portion on its outer periphery. The first snap-fit ​​portion and the second snap-fit ​​portion are adapted to be connected so that the motor cover is placed on the end of the motor bracket to fix the outer rotor motor. Among them, one of the first snap-fit ​​portion and the second snap-fit ​​portion is an elastic snap-fit ​​portion. The anti-disassembly component is positioned on the elastic deformation stroke of the elastic locking part; When the anti-disassembly component is installed, it restricts the elastic deformation of the elastic locking portion to prevent the second locking portion from disengaging from the first locking portion. After the anti-tampering component is removed, the elastic locking part can be pried open and undergo elastic deformation, causing the second locking part to separate from the first locking part, so as to remove the motor cover.

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