Ceiling type air conditioner

Abstract

The utility model discloses a kind of ceiling type air conditioners, the bottom of shell is formed with installation port, heat exchanger is arranged in shell, panel is set in the bottom of shell and covers installation port, panel is provided with air outlet, air deflector is rotatably arranged at air outlet, the end of air deflector is provided with first extension connecting part, drive motor is set on panel, drive motor is configured to drive air deflector to rotate, first shaft sleeve is configured to connect the motor shaft of drive motor and first extension connecting part, installation shaft hole is formed in first shaft sleeve, motor shaft and first extension connecting part are inserted into installation shaft hole, axial limit structure is arranged between first extension connecting part and first shaft sleeve, axial limit structure is configured to limit the axial movement of air deflector, to avoid axial movement of air deflector.

Description

Technical Field

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

[0002] Air conditioners are common household appliances. They are categorized into floor-standing, wall-mounted, and ceiling-mounted types based on their installation method. Ceiling-mounted air conditioners, installed in the ceiling, make full use of ceiling space and are therefore widely used.

[0003] A ceiling-mounted air conditioner in the prior art has an air outlet on the panel, and an air guide plate is installed at the air outlet. The air guide plate is driven by a drive motor, and the rotation of the air guide plate adjusts the air outlet angle. The air guide plate is directly connected to the motor shaft, lacking an axial limiting structure, which makes the air guide plate prone to axial movement during transportation, installation, or operation of the air conditioner. After the air guide plate moves axially, the gap between the air guide plate on both sides of the air outlet becomes uneven, affecting the uniformity of air outlet, and the side with the narrower gap is more prone to condensation.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0005] In response to the problems mentioned in the background art, this utility model proposes a ceiling-mounted air conditioner to prevent the air guide plate from axially shifting.

[0006] To achieve the above-mentioned objectives, the present invention employs the following technical solution: In some embodiments of this application, a ceiling-mounted air conditioner is provided, comprising: The outer casing has a mounting opening formed at its bottom; A heat exchanger disposed in the housing and configured to perform heat exchange on the flowing airflow. A panel is disposed at the bottom of the housing and covers the mounting port, and an air outlet is provided on the panel; An air guide plate is rotatably disposed at the air outlet, the air guide plate is configured to adjust the air outlet direction, and a first extension connection portion is provided at the end of the air guide plate; A drive motor is disposed on the panel and configured to drive the air guide plate to rotate; A first bushing is configured to connect the first extended connecting portion and the motor shaft of the drive motor. A mounting shaft hole is formed in the first bushing, and the motor shaft and the first extended connecting portion are inserted into the mounting shaft hole. An axial limiting structure is provided between the first extended connecting portion and the first bushing, and the axial limiting structure is configured to restrict the axial movement of the air guide plate.

[0007] The above technical solution has the following advantages or beneficial effects: By setting an axial limiting structure between the first extended connecting part and the first bushing, a reliable constraint can be formed on the axial movement of the air guide plate, which fundamentally solves the problem that the air guide plate is prone to axial movement during transportation, installation or operation due to the lack of axial limiting in the prior art, and ensures the positional stability of the air guide plate under various working conditions.

[0008] Because the air guide plate does not move axially, the gap between the air guide plate and the two sides of the air outlet can always remain uniform. The uniform gap ensures that the airflow is more evenly distributed when it flows out of the air outlet, avoiding the situation where the local air volume is large and the local air volume is small due to uneven gaps. This significantly improves the air outlet uniformity of the air conditioner, and thus improves the uniformity of indoor temperature regulation.

[0009] Axial movement of the air guide plate can cause the gap on one side to narrow. This narrowed gap is more prone to condensation due to changes in airflow velocity and uneven temperature distribution. This invention limits the axial movement of the air guide plate, ensuring the uniformity of the gap and preventing excessive narrowing on one side. This effectively reduces the likelihood of condensation and lowers the risk of damage to indoor items or negative impact on user experience caused by condensation dripping.

[0010] Furthermore, the axial limiting structure makes the rotation of the air guide plate more stable, reducing additional friction and abnormal noise caused by lateral movement, and extending the service life of the air guide plate and related components such as the drive motor. At the same time, the stable position and uniform gap of the air guide plate also enhance the overall structural refinement and appearance quality of the air conditioner, increasing user trust and satisfaction with the product.

[0011] In some embodiments of this application, a first protrusion is provided on the outer peripheral wall of the first extended connecting portion, and a second protrusion is provided on the inner peripheral wall of the mounting shaft hole, wherein the first protrusion and the second protrusion are engaged.

[0012] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: The snap-fitting engagement between the first and second protrusions forms part of the axial limiting structure of the air guide plate. After the first and second protrusions snap together, a reliable limiting fit is formed in the axial direction. When the air guide plate is subjected to axial forces, such as the bumps during transportation, the accidental collision force during installation, or the axial force generated by vibration during operation, the first and second protrusions will abut against each other, thereby effectively preventing the air guide plate from moving axially. In some embodiments of this application, the first bushing is provided with a plurality of extensions, the plurality of extensions being arranged at circumferential intervals along the first bushing, and a second protrusion being provided on the inner wall of any of the extensions.

[0013] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: When the first extension connecting part is inserted into the mounting hole of the first bushing, the circumferentially spaced arrangement of multiple extensions provides a certain amount of elastic space. During assembly, when the first protrusion on the outer peripheral wall of the first extension connecting part contacts the second protrusion on the inner wall of the extension, the multiple extensions will undergo slight outward expansion deformation due to external force. This allows the first protrusion to slide in more smoothly and engage with the second protrusion, reducing assembly difficulty and improving assembly efficiency. After the first and second protrusions are fully engaged, the extensions will tightly adhere to the first extension connecting part with their own elastic restoring force, ensuring the stability of the engagement structure and preventing loosening during subsequent use. In some embodiments of this application, the first bushing is provided with an identification portion, and a gap is formed between two adjacent extension portions, one of which is a foolproof gap, the foolproof gap corresponding to the identification portion, and a limiting protrusion is provided on the outer peripheral wall of the first extension connection portion, the limiting protrusion being located within the foolproof gap.

[0014] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: When assembling the first extended connecting part with the first bushing, the assembler can quickly locate the position of the anti-foolproof gap using the marking part, and then align the limiting protrusion on the outer peripheral wall of the first extended connecting part with the anti-foolproof gap before inserting it. This design effectively avoids component damage or incomplete assembly caused by incorrect assembly direction.

[0015] In some embodiments of this application, a first step is provided on the outer peripheral wall of the first extended connection portion, and a second step is provided on the inner peripheral wall of the mounting shaft hole, with the first step abutting against the second step.

[0016] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: The abutting structure of the first and second steps constitutes another part of the axial limiting structure of the air guide plate. When the air guide plate is subjected to axial force and tends to move, the first step will abut tightly against the second step, directly blocking the axial movement of the air guide plate through the rigid contact between the two. This abutting fit, together with the aforementioned protruding snap-fit ​​structure, forms a double axial limiting, further enhancing the ability to limit the axial movement of the air guide plate. Even if the protruding snap-fit ​​structure experiences slight wear during long-term use, the step abutting structure can still play a reliable limiting role, ensuring that the air guide plate will not undergo significant axial displacement, thereby maintaining the uniformity of the gap between the air guide plate on both sides of the air outlet over a long period of time. In some embodiments of this application, a first irregularly shaped mounting shaft hole is provided in the mounting shaft hole, and the first extended connecting portion includes a first irregularly shaped connecting portion, which is inserted into the first irregularly shaped mounting shaft hole.

[0017] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: The non-circular structure design (such as D-shape, square, polygon, etc.) of the first irregularly shaped mounting shaft hole and the first irregularly shaped connecting part effectively prevents relative circumferential rotation between them. When the drive motor is working, the torque of the motor shaft is transmitted to the first extended connecting part through the first bushing. Since there is no space for circumferential rotation between the first irregularly shaped connecting part and the first irregularly shaped mounting shaft hole, the torque can be directly and stably transmitted to the air guide plate, ensuring that the air guide plate can accurately adjust the air outlet angle according to the rotation of the drive motor. Compared with the fit between a circular shaft hole and a circular shaft, this irregular structure eliminates the slippage caused by gaps, greatly improving the efficiency and stability of power transmission and ensuring the accuracy of air guide plate adjustment. In some embodiments of this application, a second irregularly shaped mounting shaft hole is provided in the mounting shaft hole, and the motor shaft includes an irregularly shaped shaft segment, which is inserted into the second irregularly shaped mounting shaft hole.

[0018] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: The second irregularly shaped mounting shaft hole and the irregularly shaped shaft segment use a non-circular structure for mating (e.g., spline, oblong, hexagonal, etc.), which completely eliminates circumferential relative sliding between them. When the drive motor is working, the rotational torque of the motor shaft is directly transmitted to the first bushing through the irregularly shaped shaft segment. Because the contours of the irregular structures fit each other perfectly, there is no "free-spinning" gap that may occur in circular mating, and the torque transmission is almost lossless, ensuring efficient power transmission from the motor shaft to the first bushing. This allows the air guide plate to quickly respond to the action commands of the drive motor, accurately adjust the air outlet angle, and improve the control sensitivity of the air conditioner. In some embodiments of this application, a motor mounting base is also included, wherein the motor mounting base is disposed on the panel, the motor is disposed on the motor mounting base, the motor is located on one side of the motor mounting base, the air guide plate is located on the other opposite side of the motor mounting base, and the motor mounting base is provided with a first mounting hole, through which the first bushing passes.

[0019] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: The motor mounting bracket integrates functions such as motor installation, air guide plate positioning, and first shaft sleeve insertion, making the connection between components tighter and more orderly. This integrated design effectively utilizes the space below the panel, avoiding space waste caused by scattered component installation, and making the bottom structure of the ceiling-mounted air conditioner more compact, meeting the high standards of space utilization required for ceiling-mounted air conditioners. In some embodiments of this application, the motor mounting base is provided with a stop protrusion, and the first bushing is provided with an extension limiting portion. The stop protrusion abuts against the extension limiting portion to limit the rotation angle of the air guide plate.

[0020] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: When the drive motor rotates the air guide plate to adjust the air outlet angle, the first bushing rotates along with the air guide plate, and the extended limiting part on the first bushing also rotates accordingly. When the air guide plate rotates to the preset maximum angle, the extended limiting part abuts against the stop protrusion on the motor mounting base, at which point the air guide plate can no longer rotate, thus achieving precise limitation of the air guide plate's rotation angle. This mechanical limiting method is more reliable than simply relying on the drive motor's control program to limit the rotation angle, effectively preventing the air guide plate from rotating beyond the specified angle due to motor control program malfunctions or deviations, ensuring that the air guide plate always adjusts the air outlet direction within a safe and reasonable angle range. In some embodiments of this application, the end of the air guide plate is provided with a second extension connection portion, a second bushing is fixedly sleeved on the second extension connection portion, a second mounting hole is provided on the panel, and the second bushing is rotatably disposed in the second mounting hole.

[0021] Another technical solution among the above-mentioned technical solutions has the following advantages or beneficial effects: The second bushing is rotatably positioned within the second mounting hole, providing a stable fulcrum for the rotation of the air guide plate. Made of POM, the second bushing offers excellent self-lubrication, reducing frictional resistance and allowing the air guide plate to rotate more smoothly and steadily under the drive motor, preventing any jamming. This not only ensures precise adjustment of the air outlet angle but also reduces noise during rotation, enhancing the user experience. Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural diagram of a ceiling-mounted air conditioner according to some embodiments; Figure 2 This is a cross-sectional view of a ceiling-mounted air conditioner according to some embodiments; Figure 3 This is a structural diagram of a panel according to some embodiments; Figure 4 for Figure 3 Enlarged view of section A in the middle; Figure 5 for Figure 3 Enlarged view of section B; Figure 6 This is yet another structural diagram of a panel according to some embodiments; Figure 7 for Figure 6 C-axis sectional view; Figure 8 for Figure 7 Enlarged view of section D in the middle; Figure 9 for Figure 7 Enlarged view of section E in the middle; Figure 10 This is a structural diagram of an air guide plate according to some embodiments; Figure 11 for Figure 10 Enlarged view of section F in the middle; Figure 12 for Figure 10 Enlarged view of section G in the middle; Figure 13 This is a structural diagram of a second bushing and a second extended connection portion according to some embodiments; Figure 14 This is a structural diagram of a motor mounting base, a drive motor, and an air guide plate according to some embodiments; Figure 15 for Figure 14 A structural diagram omitting the drive motor; Figure 16 This is a structural diagram of a first bushing according to some embodiments; Figure 17 A cross-sectional view of a first bushing according to some embodiments; Figure 18 This is a structural diagram of a motor mounting bracket according to some embodiments.

[0024] Figure label: 1. Outer casing; 2. Heat exchanger; 3. Fan; 41. Air inlet duct; 42. Air outlet duct; 100. Panel; 110. Air outlet; 120. Second mounting hole; 200. Air guide plate; 210. First extension connecting part; 211. First protrusion; 212. First step; 213. First irregular connecting part; 220. Second extension connecting part; 230. Limiting protrusion; 300. Drive motor; 310. Motor shaft; 311. Irregularly shaped shaft section; 400, Motor mounting base; 410, First mounting hole; 420, Screw post; 430, Stop protrusion; 500, First bushing; 510, Second protrusion; 520, Mounting shaft hole; 521, First irregularly shaped mounting shaft hole; 522, Second irregularly shaped mounting shaft hole; 530, Marking part; 540, Foolproof clearance; 550, Extension part; 560, Extension limiting part; 570, Second step; 600, Second bushing. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, 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 application 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 application.

[0027] 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. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0031] The ceiling-mounted air conditioner in this application typically includes a casing and a heat exchanger, a fan, and a drip tray disposed within the casing. The heat exchanger has an annular structure to surround the outside of the fan, and the surrounding structure of the heat exchanger forms an air inlet channel. An air outlet channel is formed between the heat exchanger and the inner wall of the casing. The drip tray is located at the bottom of the heat exchanger for collecting the condensate from the heat exchanger.

[0032] The bottom of the housing is normally open to form an installation port, which allows the heat exchanger, fan, and water tray to be assembled into the housing.

[0033] Ceiling-mounted air conditioners also include a panel assembly, which has an air inlet and an air outlet. The panel assembly is located at the bottom of the casing and covers the mounting opening. The air inlet is connected to the air inlet channel.

[0034] During use, after the fan starts running, outside air enters the air intake channel through the air inlet. After the air exchanges heat with the heat exchanger, the heat-exchanged air is delivered from the air supply channel to the air outlet. Finally, the heat-exchanged air is output to the indoor space from the air outlet.

[0035] A ceiling-mounted air conditioner in the prior art has an air outlet on the panel, and an air guide plate is installed at the air outlet. The air guide plate is driven by a drive motor, and the rotation of the air guide plate adjusts the air outlet angle. The air guide plate is directly connected to the motor shaft and lacks an axial limiting structure, which makes the air guide plate prone to axial movement during transportation, installation, or operation of the air conditioner. After the air guide plate moves axially, the gap between the air guide plate on both sides of the air outlet becomes uneven, affecting the uniformity of air outlet, and the side with the narrower gap is more prone to condensation.

[0036] In some embodiments of this application, the mounting structure of the air guide plate 200 is improved to prevent axial movement of the air guide plate 200. One embodiment of this application provides a ceiling-mounted air conditioner. Figure 1 This is a structural diagram of a ceiling-mounted air conditioner as viewed from the bottom. Figure 2 This is a cross-sectional view of a ceiling-mounted air conditioner.

[0037] The ceiling-mounted air conditioner includes a housing 1, and the bottom of the housing 1 has an installation opening.

[0038] The ceiling-mounted air conditioner also includes a heat exchanger 2, which is disposed in the outer casing 1 and configured to exchange heat with the flowing air. An air supply channel 42 is formed between the heat exchanger 2 and the inner wall of the outer casing 1, and an air inlet channel 41 is formed around the heat exchanger 2.

[0039] The ceiling-mounted air conditioner also includes a fan 3, which is located inside the air inlet duct 41.

[0040] The ceiling-mounted air conditioner also includes a panel 100, which is located at the bottom of the outer casing 1 and covers the mounting opening. An air outlet 110 is provided on the panel 100. For example, the panel 100 has a rectangular structure, and air outlets 110 are respectively provided on the four sides of the panel 100 to form a four-way air outlet pattern.

[0041] The ceiling-mounted air conditioner also includes an air guide plate 200, which is rotatably mounted at the air outlet 110 and configured to adjust the air outlet direction. A first extension connecting portion 210 is provided at the end of the air guide plate 200. Figure 10 This is a structural diagram of the air guide plate 200. Figure 11 for Figure 10 The enlarged view of section F shows the structure of the first extended connecting part 210. The first extended connecting part 210 serves as a connecting structure for the air guide plate 200, and is used to connect the air guide plate 200 to the drive mechanism.

[0042] The ceiling-mounted air conditioner also includes a drive motor 300, which is mounted on the panel 100 and is configured to drive the air guide plate 200 to rotate. Figure 3 This is a structural diagram of panel 100, air guide plate 200, and drive motor 300. Figure 4 for Figure 3 The enlarged view of section A shows an assembly structure diagram of panel 100, air guide plate 200, and drive motor 300. Figure 6 This is a partial structural diagram of the panel 100, the air guide plate 200, and the drive motor 300. Figure 7 for Figure 6 C-axis sectional view, Figure 8 for Figure 7 Enlarged view of section D in the middle. Figure 8 An assembly cross-sectional view showing the panel 100, the air guide plate 200, and the drive motor 300.

[0043] The ceiling-mounted air conditioner also includes a first bushing 500, which is configured to connect the first extended connecting part 210 and the motor shaft 310 of the drive motor 300. A mounting shaft hole 520 is formed in the first bushing 500, and the motor shaft 310 and the first extended connecting part 210 are inserted into the mounting shaft hole 520. Figure 16 This is a structural diagram of the first bushing 500. Figure 17 This is a sectional view of the first bushing 500.

[0044] An axial limiting structure is provided between the first extended connecting part 210 and the first bushing 500, and the axial limiting structure is configured to restrict the axial movement of the air guide plate 200.

[0045] By setting an axial limiting structure between the first extended connecting part 210 and the first bushing 500, a reliable constraint can be formed on the axial movement of the air guide plate 200, which fundamentally solves the problem that the air guide plate 200 is prone to axial movement during transportation, installation or operation due to the lack of axial limiting in the prior art, and ensures the positional stability of the air guide plate 200 under various working conditions.

[0046] Because the air guide plate 200 does not move axially, the gap between the air guide plate 200 and both sides of the air outlet 110 can always remain uniform. The uniform gap ensures that the airflow is more evenly distributed when it flows out of the air outlet 110, avoiding the situation where the local air volume is large and the local air volume is small due to uneven gaps. This significantly improves the air outlet uniformity of the air conditioner, and thus improves the uniformity of indoor temperature regulation.

[0047] Axial movement of the air guide plate 200 can cause the gap on one side to narrow. Condensation is more likely to occur at this narrowed gap due to changes in airflow velocity and uneven temperature distribution. This invention limits the axial movement of the air guide plate 200, ensuring the uniformity of the gap and preventing excessive narrowing on one side. This effectively reduces the likelihood of condensation and lowers the risk of damage to indoor items or negative impact on user experience caused by condensation dripping.

[0048] Furthermore, the axial limiting structure makes the rotation of the air guide plate 200 more stable, reducing additional friction and abnormal noise caused by lateral movement, and extending the service life of the air guide plate 200 and related components such as the drive motor 300. At the same time, the stable position and uniform gap of the air guide plate 200 also enhance the overall structural refinement and appearance quality of the air conditioner, increasing user trust and satisfaction with the product.

[0049] In some embodiments of this application, reference is made to Figure 11 A first protrusion 211 is provided on the outer peripheral wall of the first extended connecting portion 210. (Refer to...) Figure 16 A second protrusion 510 is provided on the inner peripheral wall of the mounting shaft hole 520. The first protrusion 211 engages with the second protrusion 510. For example, the first protrusion 211 is an annular rib structure, and the second protrusion 510 is an annular rib structure or a circumferentially spaced protrusion structure.

[0050] In actual use, when the air guide plate 200 is assembled with the first bushing 500 and the motor shaft 310 of the drive motor 300, the first extended connecting part 210 is inserted into the mounting shaft hole 520 of the first bushing 500. At this time, the first protrusion 211 on the outer peripheral wall of the first extended connecting part 210 will approach the second protrusion 510 on the inner peripheral wall of the mounting shaft hole 520. As the assembly proceeds, the first protrusion 211 and the second protrusion 510 gradually engage together.

[0051] The snap-fitting engagement between the first protrusion 211 and the second protrusion 510 forms part of the axial limiting structure of the air guide plate 200. After the first protrusion 211 and the second protrusion 510 snap together, a reliable limiting engagement is formed in the axial direction. When the air guide plate 200 is subjected to axial force, such as the bumping force during transportation, the accidental collision force during installation, or the axial force generated by vibration during operation, the first protrusion 211 and the second protrusion 510 will abut against each other, thereby effectively preventing the air guide plate 200 from moving axially.

[0052] This snap-fit ​​structure also enhances the connection stability between the first extended connecting part 210 and the first bushing 500. During the process of the air guide plate 200 rotating to adjust the air outlet direction, the snap-fit ​​between the first protrusion 211 and the second protrusion 510 makes the connection between the two more secure, reduces the possibility of relative slippage, ensures that the power can be stably transmitted from the drive motor 300 to the air guide plate 200, and ensures that the air guide plate 200 can rotate accurately according to the preset angle, thereby improving the reliability of the air guide plate 200 in adjusting the air outlet direction.

[0053] Furthermore, this snap-fit ​​structure is simple and ingeniously designed, facilitating assembly. Simply insert the first extension connecting part 210 into the mounting shaft hole 520 until the first protrusion 211 and the second protrusion 510 snap into place; no complex tools or processes are required, improving production and assembly efficiency. Simultaneously, during long-term use, this snap-fit ​​structure is not prone to loosening, maintaining stable performance and extending the service life of the air guide plate 200 and related components.

[0054] In some embodiments of this application, reference is made to Figure 16 The first bushing 500 is provided with a plurality of extensions 550, which are arranged at intervals along the circumference of the first bushing 500, and a second protrusion 510 is provided on the inner wall of any one of the extensions 550.

[0055] When the first extension connecting part 210 is inserted into the mounting shaft hole 520 of the first bushing 500, the circumferentially spaced arrangement of multiple extension parts 550 provides a certain amount of elastic space. During assembly, when the first protrusion 211 on the outer peripheral wall of the first extension connecting part 210 contacts the second protrusion 510 on the inner wall of the extension part 550, the multiple extension parts 550 will undergo slight outward expansion deformation due to external force. This allows the first protrusion 211 to slide in more smoothly and engage with the second protrusion 510, reducing assembly difficulty and improving assembly efficiency. After the first protrusion 211 and the second protrusion 510 are fully engaged, the extension parts 550 will tightly adhere to the first extension connecting part 210 with their own elastic restoring force, ensuring the stability of the engagement structure and preventing loosening during subsequent use.

[0056] The second protrusions 510 on the multiple extensions 550 form a circumferential multi-point snap-fit ​​engagement with the first protrusions 211. This multi-point snap-fit ​​structure can apply axial restraint force to the first extension connection 210 from multiple directions, greatly enhancing the axial limiting capability of the air guide plate 200. Compared with the limiting method of a single protrusion, the multi-point snap-fit ​​can make the axial force distribution more uniform, avoiding wear or deformation of the protrusion caused by excessive local force, thereby ensuring the stability of the axial limiting effect during long-term use and effectively preventing the air guide plate 200 from axially shifting.

[0057] Multiple extensions 550 are arranged circumferentially at intervals, providing uniform circumferential support to the first extension connection 210 when the air guide plate 200 is rotated by the drive motor 300. This uniform support reduces the swaying of the first extension connection 210 during rotation, ensuring the smooth rotation of the air guide plate 200 and thus ensuring the accuracy of the air outlet angle adjustment. Simultaneously, the uniform support force also reduces wear between the first bushing 500 and the first extension connection 210, extending the service life of the components.

[0058] Furthermore, the structural design of the multiple extensions 550 facilitates manufacturing. During the production of the first bushing 500, the multiple extensions 550 and the second protrusion 510 can be integrally molded using a mold, eliminating the need for complex processing steps and reducing manufacturing costs. Moreover, the circumferentially spaced arrangement allows for the relatively small size of each extension 550, reducing material usage and achieving lightweight design while maintaining structural strength.

[0059] In some embodiments of this application, reference is made to Figure 16 The first bushing 500 is provided with a marking portion 530. For example, the marking portion 530 is a symbol, a raised part, or a concave part.

[0060] A gap is formed between two adjacent extensions 550, one of which is a foolproof gap 540, which corresponds to the marking portion 530.

[0061] Reference Figure 11 A limiting protrusion 230 is provided on the outer peripheral wall of the first extended connecting portion 210. The limiting protrusion 230 is located within the anti-fooling gap 540.

[0062] The corresponding arrangement of the marking section 530 and the foolproof gap 540 provides assembly personnel with clear assembly guidance. When assembling the first extension connecting part 210 and the first bushing 500, the assembly personnel can quickly locate the position of the foolproof gap 540 through the marking section 530, and then align the limiting protrusion 230 on the outer peripheral wall of the first extension connecting part 210 with the foolproof gap 540 for insertion. This design effectively avoids component damage or incomplete assembly due to incorrect assembly direction. For example, if the first extension connecting part 210 and the first bushing 500 are assembled in the wrong direction, the limiting protrusion 230 will interfere with the extension part 550 and cannot be inserted smoothly, thus promptly reminding the assembly personnel to adjust the assembly direction, greatly reducing the assembly error rate, and is especially user-friendly for novice assembly personnel.

[0063] Thanks to the guidance of the marking section 530 and the cooperation of the mistake-proof clearance 540 and the limiting protrusion 230, assembly personnel do not need to spend too much time adjusting the relative position of the first extended connecting part 210 and the first bushing 500, and can quickly complete the alignment and insertion operations, significantly shortening the assembly time and improving the overall production efficiency. At the same time, this structural design also reduces the repeated adjustment and verification steps in the assembly process, making the assembly process smoother.

[0064] The limiting protrusion 230 is located within the anti-foolproof gap 540. After the first extension connecting part 210 and the first bushing 500 are assembled in place, the limiting protrusion 230 and the two side extensions 550 of the anti-foolproof gap 540 form a circumferential limiting fit. This effectively restricts the rotation of the first extension connecting part 210 relative to the first bushing 500 in the circumferential direction, ensuring that the first protrusion 211 on the first extension connecting part 210 and the second protrusion 510 on the inner wall of the extension 550 can be accurately and stably engaged, avoiding loosening of the engagement structure due to relative rotation between the two, and further ensuring the reliability of the connection between the first extension connecting part 210 and the first bushing 500, thereby ensuring the stability of power transmission during the rotation adjustment of the air guide plate 200.

[0065] Furthermore, the marking section 530 facilitates later maintenance and repair. When the air guide plate 200 or related components need to be disassembled and reassembled, maintenance personnel can quickly locate the position of the mistaken clearance 540 through the marking section 530 and operate in the correct direction, improving maintenance efficiency and preventing damage to components due to assembly errors during maintenance.

[0066] In some embodiments of this application, reference is made to Figure 10 A first step 212 is provided on the outer peripheral wall of the first extended connecting portion 210. (Refer to...) Figure 8 and Figure 17The inner peripheral wall of the mounting shaft hole 520 is provided with a second step 570, and the first step 212 abuts against the second step 570.

[0067] The abutting structure of the first step 212 and the second step 570 constitutes another part of the axial limiting structure of the air guide plate 200. When the air guide plate 200 is subjected to axial force and tends to move, the first step 212 will abut tightly against the second step 570, directly blocking the axial movement of the air guide plate 200 through the rigid contact between the two. This abutting fit, together with the aforementioned protruding snap-fit ​​structure, forms a double axial limiting, further enhancing the ability to limit the axial movement of the air guide plate 200. Even if the protruding snap-fit ​​structure experiences slight wear during long-term use, the step abutting structure can still play a reliable limiting role, ensuring that the air guide plate 200 will not undergo significant axial displacement, thereby maintaining the uniformity of the gap between the air guide plate 200 on both sides of the air outlet 110 for a long time.

[0068] During the insertion of the first extended connecting part 210 into the mounting shaft hole 520 of the first bushing 500, the assembly is complete when the first step 212 abuts against the second step 570. This provides a clear assembly termination signal for the assembler, preventing issues such as shallow assembly leading to an insecure connection or excessive assembly causing component deformation. This intuitive positioning method simplifies assembly operations, ensuring consistent assembly for each product without relying on additional measuring tools, and improving product quality stability.

[0069] During the rotation of the air guide plate 200, the power of the drive motor 300 is transmitted to the first extended connecting part 210 through the first bushing 500. The abutting surfaces of the first step 212 and the second step 570 can share part of the transmitted torque, making the force distribution more uniform. This reduces the load on the protruding snap-fit ​​structure, lowers the risk of damage to the protrusion due to force concentration, and extends the service life of the component. At the same time, the uniform force transmission also makes the rotation of the air guide plate 200 more stable, reducing vibration and noise during operation.

[0070] In some embodiments of this application, reference is made to Figure 17 A first irregularly shaped mounting shaft hole 521 is provided within the mounting shaft hole 520. (Refer to...) Figure 11 The first extended connecting portion 210 includes a first irregular connecting portion 213, which is inserted into the first irregular mounting shaft hole 521.

[0071] The non-circular structure design (such as D-shape, square, polygon, etc.) of the first irregularly shaped mounting shaft hole 521 and the first irregularly shaped connecting part 213 effectively prevents relative circumferential rotation between them. When the drive motor 300 is working, the torque of the motor shaft 310 is transmitted to the first extended connecting part 210 through the first bushing 500. Since there is no space for circumferential rotation between the first irregularly shaped connecting part 213 and the first irregularly shaped mounting shaft hole 521, the torque can be directly and stably transmitted to the air guide plate 200, ensuring that the air guide plate 200 can accurately adjust the air outlet angle according to the rotation of the drive motor 300. Compared with the fit between a circular shaft hole and a circular shaft, this irregular structure eliminates the slippage caused by gaps, greatly improves the efficiency and stability of power transmission, and ensures the accuracy of the adjustment of the air guide plate 200.

[0072] The irregular structure itself has a foolproof function. During assembly, the first irregular connecting part 213 can only be inserted into the first irregular mounting shaft hole 521 in a specific direction. If the direction is incorrect, assembly will not be successful. This effectively avoids component damage or functional failure caused by assembly direction deviation. At the same time, this structure also simplifies the alignment operation during assembly. Assemblers do not need to repeatedly adjust the angle; they only need to align the contours of the irregular structure to quickly complete the assembly, improving assembly efficiency, reducing assembly errors, and ensuring the consistency of each product assembly.

[0073] Furthermore, after the first irregularly shaped connecting part 213 is inserted into the first irregularly shaped mounting shaft hole 521, the contact surface between the two is larger and the fit is tighter, which can disperse the force during the transmission process and reduce local stress concentration. During the long-term repeated rotation and adjustment of the air guide plate 200, this uniform force distribution reduces component wear and extends the service life of the first extended connecting part 210 and the first bushing 500. In addition, the tight fit also reduces the gap between the two, reduces abnormal noise caused by vibration during operation, and improves the quietness of the air conditioner operation.

[0074] In some embodiments of this application, reference is made to Figure 17 A second irregularly shaped mounting shaft hole 522 is provided within the mounting shaft hole 520. (Refer to...) Figure 8 The motor shaft 310 includes an irregular shaft section 311, which is inserted into the second irregular mounting shaft hole 522.

[0075] The second irregularly shaped mounting shaft hole 522 and the irregularly shaped shaft segment 311 use a non-circular structure for mating (e.g., spline, waist-shaped, hexagonal, etc.), which completely eliminates circumferential relative sliding between them. When the drive motor 300 is working, the rotational torque of the motor shaft 310 is directly transmitted to the first bushing 500 through the irregularly shaped shaft segment 311. Because the contours of the irregular structures fit each other perfectly, there is no "free-spinning" gap that may occur in circular mating, and the torque transmission is almost lossless, ensuring efficient power transmission from the motor shaft 310 to the first bushing 500. This allows the air guide plate 200 to quickly respond to the action commands of the drive motor 300, accurately adjust the air outlet angle, and improve the control sensitivity of the air conditioner.

[0076] The fit between the irregularly shaped shaft segment 311 and the second irregularly shaped mounting shaft hole 522 is a surface contact rather than a line contact, resulting in a larger contact area. This allows the driving force of the motor shaft 310 to be evenly distributed onto the first bushing 500, preventing component deformation or wear caused by excessive localized stress. During long-term operation of the air conditioner, this evenly distributed stress effectively extends the service life of the first bushing 500 and the motor shaft 310, reduces malfunctions caused by loose connections, and ensures the long-term stable operation of the air guide plate 200 adjustment mechanism.

[0077] The irregularly shaped structure inherently prevents mistakes. When assembling the motor shaft 310 and the first bushing 500, the irregularly shaped shaft segment 311 can only be inserted into the second irregularly shaped mounting shaft hole 522 in the single correct direction. If the direction is off, the assembly cannot be completed, thus avoiding power transmission failure or component damage due to assembly errors. Furthermore, this structure achieves precise alignment without additional positioning marks, simplifying the assembly process and improving production efficiency, making it particularly suitable for mass production scenarios.

[0078] In some embodiments of this application, reference is made to Figure 4 The ceiling-mounted air conditioner also includes a motor mounting bracket 400, which is fixedly mounted on the panel 100 by screws or other means. The motor is fixedly mounted on the motor mounting bracket 400. Figure 18 This is a structural diagram of a motor mounting base 400. A screw post 420 is provided on one side of the motor mounting base 400, and the drive motor 300 is fixedly connected to the screw post 420 by screws.

[0079] The motor is located on one side of the motor mounting base 400, and the air guide plate 200 is located on the other opposite side of the motor mounting base 400. The motor mounting base 400 is provided with a first mounting hole 410, and the first bushing 500 passes through the first mounting hole 410 so that the first bushing 500 connects the motor shaft 310 to the first extension connection part 210.

[0080] The motor mounting bracket 400 provides a reliable mounting base for the motor. The motor is fixed to the panel 100 via the motor mounting bracket 400. Compared to directly mounting the motor to the panel 100, the motor mounting bracket 400 increases the contact area with the mounting surface, dispersing the vibration force generated during motor operation and reducing the possibility of the motor loosening due to vibration. This allows the motor to maintain a stable position during long-term operation, ensuring the stability of its output power and providing a continuous and reliable driving force for the normal rotation of the air guide plate 200.

[0081] The first bushing 500 passes through the first mounting hole 410 on the motor mounting base 400, which provides good support and guidance for the first bushing 500. During the rotation of the air guide plate 200, the first bushing 500 rotates together with the air guide plate 200 and the motor shaft 310. The first mounting hole 410 restricts the radial wobble of the first bushing 500, ensuring that the first bushing 500 always rotates on a preset axis. This not only ensures the stability of the connection between the first bushing 500 and the motor shaft 310 and the first extended connection 210, reducing wear caused by wobble, but also makes the rotation of the air guide plate 200 smoother and reduces noise during operation. The first bushing 500 is made of POM, which has good self-lubricating properties.

[0082] The motor mounting bracket 400 integrates functions such as motor mounting, air guide plate 200 position limitation, and first bushing 500 insertion, making the connection between components tighter and more orderly. This integrated design effectively utilizes the space below the panel 100, avoiding space waste caused by scattered component installation, and making the bottom structure of the ceiling-mounted air conditioner more compact, meeting the high standards of space utilization required for ceiling-mounted air conditioners.

[0083] In some embodiments of this application, reference is made to Figure 18 The motor mounting base 400 is provided with a stop protrusion 430, which is connected between the screw post 420 and the first mounting hole 410.

[0084] Reference Figure 16 and Figure 17 The first bushing 500 is provided with an extended limiting portion 560. (Refer to...) Figure 15 The stop protrusion 430 abuts against the extension limiting portion 560 to limit the rotation angle of the air guide plate 200.

[0085] When the drive motor 300 drives the air guide plate 200 to rotate to adjust the air outlet angle, the first bushing 500 rotates together with the air guide plate 200, and the extended limiting part 560 provided on the first bushing 500 also rotates accordingly. When the air guide plate 200 rotates to the preset maximum angle, the extended limiting part 560 abuts against the stop protrusion 430 on the motor mounting base 400, at which point the air guide plate 200 can no longer rotate, thus achieving precise limitation of the rotation angle of the air guide plate 200. This mechanical limiting method is more reliable than simply relying on the control program of the drive motor 300 to limit the rotation angle, and can effectively avoid the air guide plate 200 from rotating beyond the angle due to motor control program failure or deviation, ensuring that the air guide plate 200 always adjusts the air outlet direction within a safe and reasonable angle range.

[0086] If the rotation angle of the air guide plate 200 exceeds the design range, it may collide with the frame of the air outlet 110, the panel 100, or other adjacent components, causing damage to the air guide plate 200 or related components. The abutment structure of the stop protrusion 430 and the extended limiting part 560 can promptly stop the air guide plate 200 from continuing to rotate when it is about to reach a dangerous rotation angle, thereby avoiding the aforementioned collision. This not only protects components such as the air guide plate 200 and the panel 100, extending their service life, but also reduces the probability of needing repair or replacement due to component damage, lowering the user's operating costs.

[0087] The stop protrusion 430 can be integrally formed with the motor mounting base 400, and the extended limiting part 560 can also be integrally formed with the first bushing 500, without the need for additional complex parts, thus not significantly increasing manufacturing costs. Furthermore, this mechanical limiting structure has high reliability and is not easily affected by external environmental factors (such as temperature and humidity), maintaining stable performance during long-term use of the air conditioner.

[0088] In some embodiments of this application, reference is made to Figure 12 The end of the air guide plate 200 is provided with a second extension connecting portion 220. (Refer to...) Figure 13 A second bushing 600 is fixedly sleeved on the second extended connecting portion 220. (Refer to...) Figure 9 The panel 100 is provided with a second mounting hole 120, and the second bushing 600 is rotatably disposed in the second mounting hole 120.

[0089] One end of the air guide plate 200 is connected to the drive motor 300 via the first extension connecting part 210 and the first bushing 500, while the other end is connected to the second mounting hole 120 on the panel 100 via the second extension connecting part 220 and the second bushing 600, forming a structure supported at both ends. Compared to supporting only one end, this two-end support method can effectively distribute the weight of the air guide plate 200 and the force generated during rotation, preventing the air guide plate 200 from bending, deforming, or tilting due to excessive force on one end. Even during long-term use, it can ensure that the air guide plate 200 is always in the preset installation position, ensuring that the fit clearance between it and the air outlet 110 is uniform and maintaining a good air outlet effect.

[0090] The second bushing 600 is rotatably mounted within the second mounting hole 120, providing a stable fulcrum for the rotation of the air guide plate 200. The second bushing 600 is made of POM, which has good self-lubricating properties, reducing frictional resistance between the two components and allowing the air guide plate 200 to rotate more smoothly and steadily under the drive motor 300, preventing any jamming. This not only ensures the accuracy of the air outlet angle adjustment but also reduces noise generated during rotation, improving the user experience.

[0091] The second bushing 600 is fixedly sleeved on the second extension connection 220 and rotatably disposed within the second mounting hole 120. The wall of the second mounting hole 120 forms a radial constraint on the second bushing 600, indirectly limiting the axial movement of the air guide plate 200. In conjunction with the axial limiting structure at the first extension connection 210, this further enhances the overall axial limiting capability of the air guide plate 200, effectively preventing axial movement of the air guide plate 200 during transportation, installation, or operation, ensuring uniform gaps between the air guide plate 200 and both sides of the air outlet 110, and reducing the possibility of condensation.

[0092] The second bushing 600 is fixedly sleeved on the second extension connection 220, which enhances the structural strength of the second extension connection 220 and prevents the second extension connection 220 from breaking or being damaged due to concentrated force during the rotation of the air guide plate 200. At the same time, the second bushing 600 is rotatably disposed in the second mounting hole 120, and the wear between the two is mainly concentrated on the second bushing 600. When the second bushing 600 wears out, it can be replaced separately without replacing the entire air guide plate 200 or panel 100, which reduces maintenance costs and extends the overall service life of the air guide plate 200 and related components.

[0093] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0094] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A ceiling-mounted air conditioner, comprising: The outer casing has a mounting opening formed at its bottom; A heat exchanger disposed in the housing and configured to perform heat exchange on the flowing airflow. Its features are, It also includes: A panel is disposed at the bottom of the housing and covers the mounting port, and an air outlet is provided on the panel; An air guide plate is rotatably disposed at the air outlet, the air guide plate is configured to adjust the air outlet direction, and a first extension connection portion is provided at the end of the air guide plate; A drive motor is disposed on the panel and configured to drive the air guide plate to rotate; A first bushing is configured to connect the first extended connecting portion and the motor shaft of the drive motor. A mounting shaft hole is formed in the first bushing, and the motor shaft and the first extended connecting portion are inserted into the mounting shaft hole. An axial limiting structure is provided between the first extended connecting portion and the first bushing, and the axial limiting structure is configured to restrict the axial movement of the air guide plate.

2. The ceiling-mounted air conditioner according to claim 1, characterized in that, A first protrusion is provided on the outer peripheral wall of the first extended connecting part, and a second protrusion is provided on the inner peripheral wall of the mounting shaft hole, wherein the first protrusion and the second protrusion are engaged.

3. The ceiling-mounted air conditioner according to claim 2, characterized in that, The first bushing is provided with a plurality of extensions, which are arranged at intervals along the circumference of the first bushing, and a second protrusion is provided on the inner wall of any of the extensions.

4. The ceiling-mounted air conditioner according to claim 3, characterized in that, The first bushing is provided with an identification part, and a gap is formed between two adjacent extensions. One of the gaps is a foolproof gap, which corresponds to the identification part. A limiting protrusion is provided on the outer peripheral wall of the first extension connection part, and the limiting protrusion is located in the foolproof gap.

5. The ceiling-mounted air conditioner according to claim 2, characterized in that, A first step is provided on the outer peripheral wall of the first extended connecting part, and a second step is provided on the inner peripheral wall of the mounting shaft hole, with the first step abutting against the second step.

6. The ceiling-mounted air conditioner according to any one of claims 1 to 5, characterized in that, The mounting shaft hole is provided with a first irregular mounting shaft hole, and the first extended connecting part includes a first irregular connecting part, which is inserted into the first irregular mounting shaft hole. The mounting shaft hole is provided with a second irregular mounting shaft hole, and the motor shaft includes an irregular shaft section, which is inserted into the second irregular mounting shaft hole.

7. The ceiling-mounted air conditioner according to any one of claims 1 to 5, characterized in that, It also includes a motor mounting base, which is disposed on the panel. The motor is disposed on the motor mounting base and located on one side of the motor mounting base. The air guide plate is located on the opposite side of the motor mounting base. The motor mounting base is provided with a first mounting hole, and the first bushing passes through the first mounting hole.

8. The ceiling-mounted air conditioner according to claim 7, characterized in that, The motor mounting base is provided with a stop protrusion, and the first bushing is provided with an extension limiting part. The stop protrusion and the extension limiting part abut against each other to limit the rotation angle of the air guide plate.

9. The ceiling-mounted air conditioner according to any one of claims 1 to 5, characterized in that, The end of the air guide plate is provided with a second extension connection part, and a second bushing is fixedly sleeved on the second extension connection part. The panel is provided with a second mounting hole, and the second bushing is rotatably disposed in the second mounting hole.

10. A ceiling-mounted air conditioner, comprising: The outer casing has a mounting opening formed at its bottom; A heat exchanger disposed in the housing and configured to perform heat exchange on the flowing airflow. Its features are, It also includes: A panel is disposed at the bottom of the housing and covers the mounting port, and an air outlet is provided on the panel; An air guide plate is rotatably disposed at the air outlet. The air guide plate is configured to adjust the air outlet direction. A first extension connecting portion is provided at the end of the air guide plate, and a first protrusion is provided on the outer peripheral wall of the extension connecting portion. A drive motor is disposed on the panel and configured to drive the air guide plate to rotate; A first bushing is configured to connect the first extended connecting portion and the motor shaft of the drive motor. A mounting shaft hole is formed inside the first bushing, and the motor shaft and the first extended connecting portion are inserted into the mounting shaft hole. A second protrusion is provided on the inner peripheral wall of the mounting shaft hole, and the first protrusion engages with the second protrusion.

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