Cooling and heating switching support mechanism and dual-purpose cooling and heating fan

Abstract

This application relates to a cooling and heating switching support mechanism and a dual-purpose cooling and heating fan. The cooling and heating switching support mechanism includes: a support frame with a receiving groove; an elastic component disposed within the receiving groove; a first slider connected to the elastic component and sliding along the side wall of the receiving groove; a pin assembly disposed on the support frame and close to the receiving groove; a second slider sleeved on the pin assembly and moving axially along the pin assembly; a connecting rod assembly connected to the first slider and the second slider respectively; and a drive assembly disposed on the support frame to drive the second slider to reciprocate along the pin assembly. Specifically, the drive assembly pushes the second slider axially, converting it into a pulling or pushing force on the connecting rod assembly, which is then converted into vertical movement of the first slider, causing the elastic component to be continuously compressed or released. When the drive assembly moves in the opposite direction, the elastic component is continuously compressed or released to push the first slider back to its original position, allowing the connecting rod assembly to drive the second slider back to its original position. This provides dual protection through mechanical guidance and elastic buffering, preventing jamming.

Description

Technical Field

[0001] This application relates to the field of household fan equipment technology, and in particular to a cooling and heating switching support mechanism and a dual-purpose cooling and heating fan. Background Technology

[0002] Currently, many air evaporators operate with both cooling and heating functions, suitable for different seasons and environments. To achieve this switching between cooling and heating, air evaporators are equipped with a cooling / heating conversion device. Traditional air evaporators mostly use manual mechanical cooling / heating conversion devices, requiring users to apply considerable force to turn the lever, which is inconvenient and provides a poor user experience. Although some products have attempted to use automatic cooling / heating conversion devices, due to unreasonable structural design, problems such as heating element jamming, incomplete movement, or unstable operation often occur, seriously affecting product reliability and user experience.

[0003] Specifically, existing automatic switching devices mostly rely on complex transmission mechanisms or direct motor drive, which not only increases manufacturing costs but also, due to the lack of effective guiding and buffering mechanisms, makes moving parts prone to jamming or misalignment. Furthermore, inaccurate control of the heating element's movement trajectory may result in poor coordination with the air outlet, affecting the switching effect between hot and cold air and energy efficiency.

[0004] Therefore, there is an urgent need for a simple, stable, and easy-to-use cooling and heating switching support mechanism and a dual-purpose cooling and heating fan. Summary of the Invention

[0005] This application provides a cooling and heating switching support mechanism and a dual-purpose cooling and heating fan, which can realize the cooling and heating switching of the dual-purpose cooling and heating fan.

[0006] Therefore, this application provides a heating / cooling switching support mechanism, comprising:

[0007] The support frame is provided with an upward-opening receiving slot;

[0008] An elastic component is disposed within the receiving groove;

[0009] A first slider is connected to the elastic component and slides along the side wall of the receiving groove;

[0010] A pin assembly is provided on the support frame and is positioned close to the receiving groove;

[0011] The second slider is sleeved on the pin assembly and moves axially along the pin assembly;

[0012] A linkage assembly, the two ends of which are respectively connected to the first slider and the second slider;

[0013] A drive assembly is disposed on the support frame and connected to the second slider to drive the second slider to reciprocate along the pin assembly.

[0014] In some embodiments, the end of the connecting rod assembly facing away from the second slider is provided with a mounting groove, and the first slider is provided with a first protrusion, which engages with the mounting groove to place the connecting rod assembly on the first slider.

[0015] In some embodiments, the second slider is provided with a groove, and the connecting rod assembly is provided with a second protrusion; the second protrusion is inserted into the groove and slides along the groove to drive the second slider to move.

[0016] In some embodiments, the support frame includes a first support portion, a second support portion, and a connecting portion, with the first support portion and the second support portion respectively connected to both ends of the connecting portion; the connecting portion is provided with the receiving groove; one end of the pin assembly is provided with the first support portion, the other end is provided with the second support portion, and it is located on one side of the connecting portion.

[0017] In some embodiments, the second slider is provided with multiple pairs of mounting holes spaced apart along the axial direction, and each pair of mounting holes is through which a pin assembly passes, the axis of the mounting holes being perpendicular to the moving direction of the second slider.

[0018] In some embodiments, a limiting block is integrally formed at the end of the receiving groove away from the pin assembly, and the limiting block is provided corresponding to the receiving groove.

[0019] A dual-purpose fan for both cooling and heating includes:

[0020] A heating and cooling switching support mechanism, wherein the driving component of the heating and cooling switching support mechanism is used to drive the second slider to move axially along the pin assembly;

[0021] The housing assembly is connected to the heating and cooling switching support mechanism and forms a receiving cavity for an airflow channel; the housing assembly is provided with a first air inlet and a first air outlet communicating with the receiving cavity;

[0022] The air duct assembly is disposed within the receiving cavity;

[0023] A heating element is connected to the second slider and located within the receiving cavity;

[0024] The driving component moves the heating component closer to or away from the first air outlet by reciprocating along the axial direction of the pin component via the second slider.

[0025] In some embodiments, the heating component includes:

[0026] A heating bracket is connected to the second slider and located within the receiving cavity; the heating bracket is provided with multiple parallel air outlet grilles;

[0027] The heating element is disposed on the heating support.

[0028] In some embodiments, the system further includes two microswitches, which are respectively disposed at both ends of the support frame and located outside the receiving cavity. Each microswitch has a trigger end that is disposed toward the pin assembly.

[0029] In some embodiments, a baffle assembly is further included, disposed between the air duct assembly and the heating assembly; the baffle assembly includes:

[0030] The first baffle extends around the air duct assembly;

[0031] The second baffle portion is integrally formed with the first baffle portion; the second baffle portion is provided with a second air outlet on the side near the first baffle portion, and the second air outlet is coaxially arranged with the first air outlet; when the heating component moves to the position corresponding to the second air outlet, the heating component abuts against the first baffle portion.

[0032] The beneficial effects of this application are:

[0033] The heating / cooling switching support mechanism includes a support frame, an elastic component, a first slider, a pin assembly, a second slider, a connecting rod assembly, and a drive assembly. The support frame has an upward-opening receiving groove. The elastic component is disposed within the receiving groove. The first slider is connected to the elastic component and slides along the side wall of the receiving groove. The pin assembly is disposed on the support frame and located close to the receiving groove. The second slider is sleeved on the pin assembly and moves axially along the pin assembly. The two ends of the connecting rod assembly are respectively connected to the first slider and the second slider. The drive assembly is disposed on the support frame and connected to the second slider to drive the second slider to reciprocate along the pin assembly.

[0034] In this heating and cooling switching support mechanism, the drive assembly pushes the second slider to move axially along the pin assembly. The movement of the second slider is converted into lateral tension or thrust through the connecting rod assembly, which in turn converts the axial movement into the vertical movement of the first slider, which slides up and down within the receiving groove. Since one end of the elastic component is fixed to the inner wall of the receiving groove and the other end is fixedly connected to the first slider, the elastic component is continuously compressed or released during this process. When the drive assembly moves in the opposite direction, the elastic component pushes the first slider to reset by being continuously compressed or released, so that the connecting rod assembly synchronously drives the second slider back to its original position. This provides a dual guarantee of mechanical guidance and elastic buffering, preventing jamming. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a structural diagram of a heating and cooling switching support mechanism according to this application;

[0037] Figure 2 for Figure 1 A structural diagram from another perspective;

[0038] Figure 3 for Figure 1 Decomposition structure diagram;

[0039] Figure 4 This is a perspective view of a dual-purpose cooling and heating fan according to this application, specifically a diagram showing the state of cold air output.

[0040] Figure 5 for Figure 4 Top view;

[0041] Figure 6 for Figure 4 Decomposition structure diagram;

[0042] Figure 7 for Figure 4 Assembly structure diagram of the cooling and heating switching support mechanism, air duct assembly and baffle assembly;

[0043] Figure 8 for Figure 4 A partially enlarged view of the assembly of the cooling and heating switching support mechanism and the heating element;

[0044] Figure 9 This is another 3D diagram of a dual-purpose fan that can both cool and heat, specifically a diagram showing the state of blowing warm air;

[0045] Figure 10 for Figure 9 Top view.

[0046] Explanation of reference numerals in the attached figures:

[0047] 10. Heating / cooling switching support mechanism; 1. Support frame; 11. First support part; 12. Second support part; 13. Connecting part; 131. Receiving groove; 132. Limiting block; 2. First slider; 21. First protrusion; 3. Elastic component; 4. Linkage assembly; 41. Mounting groove; 5. Second slider; 51. Slide groove; 52. Assembly hole; 6. Pin assembly; 7. Drive assembly;

[0048] 20. Housing assembly; 201. Air inlet; 202. First air outlet; 30. Air duct assembly; 40. Baffle assembly; 401. First baffle part; 402. Second baffle part; 4021. Second air outlet; 50. Heating element; 501. Heating bracket; 502. Heating element; 60. Micro switch. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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, 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.

[0050] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. 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 this application. 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.

[0051] like Figures 1 to 3 As shown, a heating / cooling switching support mechanism includes a support frame 1, an elastic component 3, a first slider 2, a pin assembly 6, a second slider 5, a connecting rod assembly 4, and a drive assembly 7. The support frame 1 has an upward-opening receiving groove 131. The elastic component 3 is disposed within the receiving groove 131. The first slider 2 is connected to the elastic component 3 and slides along the side wall of the receiving groove 131. The pin assembly 6 is disposed on the support frame 1 and is located close to the receiving groove 131. The second slider 5 is sleeved on the pin assembly 6 and moves axially along the pin assembly 6. The two ends of the connecting rod assembly 4 are respectively connected to the first slider 2 and the second slider 5. The drive assembly 7 is disposed on the support frame 1 and connected to the second slider 5 to drive the second slider 5 to reciprocate along the pin assembly 6.

[0052] In this design, the heating / cooling switching support mechanism 10 drives the second slider 5 to move axially along the pin assembly 6 via the drive component 7 (such as a motor or cylinder). The movement of the second slider 5 is converted into lateral tension or thrust through the connecting rod assembly 4 (allowing for angle changes if the connecting rod is telescopic). The connecting rod assembly 4 converts the axial movement into the vertical movement of the first slider 2, which slides up and down within the receiving groove 131. Since one end of the elastic component 3 is fixed to the inner wall of the receiving groove 131 and the other end is fixedly connected to the first slider 2, the elastic component 3 is continuously compressed or released during the up-and-down movement of the first slider 2 within the receiving groove 131. When the drive component 7 moves in the opposite direction, the elastic component 3 pushes the first slider 2 back to its original position by being continuously compressed or released, so that the connecting rod assembly 4 synchronously drives the second slider 5 back to its original position. This provides dual protection through mechanical guidance and elastic buffering, reducing the complexity of the transmission mechanism and preventing jamming. Furthermore, it can be adapted to heating components 50 with different power ratings, allowing for flexible design by adjusting the connecting rod ratio or elastic coefficient.

[0053] Furthermore, the elastic component 3 is a compression spring or an elastic rubber pad; it is known that the compression spring or elastic rubber pad stores elastic potential energy, and the spring or elastic rubber pad releases energy to assist in reset; the elastic component 3 automatically compensates for thermal expansion and contraction displacement, and when the pressure is too high, the elastic component 3 compresses and buffers, especially when the drive component 7 suddenly starts and stops, the elastic component 3 absorbs the impact and plays a buffering role, avoiding mechanical jamming or vibration noise. Preferably, the linkage assembly 4 is a telescopic linkage or a rigid linkage; that is, the rigid linkage will forcibly change the motion trajectory, while the telescopic linkage can adapt to different angles while maintaining force transmission; the pin assembly 6 ensures that the second slider 5 maintains a linear motion trajectory and avoids deviation; the side wall of the receiving groove 131 provides a guiding function to prevent the first slider 2 from swaying; in addition, the dual-track system of the pin assembly 6 and the receiving groove 131 ensures motion stability. That is, by cleverly converting linear drive into elastic support, it has both active control and passive adjustment capabilities.

[0054] In this embodiment, as Figure 1 As shown, the connecting rod assembly 4 has a mounting groove 41 at the end opposite to the second slider 5, and the first slider 2 has a first protrusion 21. The first protrusion 21 engages with the mounting groove 41 to mount the connecting rod assembly 4 on the first slider 2. The engaging structure between the first protrusion 21 and the mounting groove 41 allows for quick separation of the connecting rod assembly 4 from the first slider 2, facilitating individual replacement or maintenance of any component without disassembling the entire mechanism, thus simplifying the assembly process and reducing installation complexity.

[0055] Furthermore, when the drive assembly 7 pushes the second slider 5, the connecting rod assembly 4 drives the first protrusion 21 to compress the elastic assembly 3 upwards via the mounting groove 41. At this time, the upper wall of the mounting groove 41 contacts the top surface of the first protrusion 21 to transmit pressure. Then, the elastic assembly 3 releases downwards and pushes the first slider 2 downwards, and the bottom of the first protrusion 21 contacts the lower wall of the mounting groove 41 to achieve reset. Throughout the process, the snap-fit ​​structure ensures efficient force transmission while allowing small swings to avoid rigid collisions of the mechanism. That is, when the connecting rod is under tension, the first protrusion 21 is in close contact with the inner wall of the mounting groove 41 to ensure that the thrust / tension is effectively transmitted to the first slider 2; during reverse movement, the rebound force of the elastic assembly 3 helps to maintain contact.

[0056] In this embodiment, as Figure 1 As shown, the second slider 5 is provided with a groove 51, and the connecting rod assembly 4 is provided with a second protrusion; the second protrusion is inserted into the groove 51 and slides along the groove 51 to drive the second slider 5 to move, ensuring that the movement of the connecting rod assembly 4 is converted into the axial linear movement of the second slider 5 (along the direction of the pin assembly 6), avoiding lateral offset or jamming.

[0057] To ensure smooth and stable sliding, preferably, the slide groove 51 is a straight slide groove 51, and the side wall of the slide groove 51 is provided with a through hole; the second protrusion includes a first protrusion and a second protrusion, the first protrusion is provided on the connecting rod assembly 4, the second protrusion is provided on the first protrusion, and the diameter of the first protrusion is smaller than the diameter of the second protrusion; this allows the second protrusion to pass smoothly through the through hole of the slide groove 51 when inserted into the slide groove 51, without the need for additional fasteners, facilitating maintenance or replacement of the connecting rod. When the second protrusion is fully inserted into the slide groove 51, the second protrusion will pass through the through hole of the slide groove 51, while the first protrusion will be embedded in the slide groove 51; this allows the second slider 5 to reciprocate within the slide groove 51, and also effectively prevents the second protrusion from accidentally dislodging from the slide groove 51 during movement, thereby ensuring the stability and reliability of the entire mechanical system.

[0058] It is clear that when the linkage assembly 4 changes angle due to the lifting and lowering of the first slider 2, the second protrusion automatically adjusts its sliding position within the groove 51 to avoid interference caused by rigid connection. For example, if the linkage assembly 4 is a rigid rod, its swinging motion will force the second protrusion to slide within the groove 51, rather than forcibly twisting the second slider 5. When the drive assembly 7 (such as a motor) pushes the second slider 5, the second slider 5 moves linearly along the pin assembly 6, and the second protrusion drives the linkage assembly 4 to deflect through its groove 51; the other end of the linkage assembly 4 pulls the first slider 2 onto the elastic assembly 3 via the first protrusion 21; if there is assembly error or thermal deformation, the sliding of the second protrusion within the groove 51 can be adaptively adjusted to avoid the mechanism from jamming. In other words, the second slider 5 forms a sliding engagement with the second protrusion of the linkage assembly 4 through the groove 51, further optimizing the motion transmission efficiency and adaptability of the mechanism.

[0059] In this embodiment, the support frame 1 includes a first support part 11, a second support part 12, and a connecting part 13. The two ends of the connecting part 13 are respectively connected to the first support part 11 and the second support part 12, adopting a split design to form a stable structure with stronger resistance to lateral forces or torsional loads. The connecting part 13 is provided with the receiving groove 131. In order to further enhance the stability and functionality of the structure, one end of the pin assembly 6 is connected to the first support part 11, and the other end is connected to the second support part 12, ensuring the stability and reliability of the entire support frame 1 and forming a second cross-support line, which together with the connecting part 13 constitutes a double anti-deformation barrier and is located on one side of the connecting part 13. This not only optimizes space utilization but also ensures the convenience and efficiency of the pin assembly 6 during use.

[0060] Furthermore, the connecting portion 13 is dedicated to accommodating the elastic component 3 and the first slider 2, providing vertical movement space; the pin assembly 6 is independently arranged on the side of the connecting portion 13 to avoid interference with the moving parts in the receiving groove 131, maximizing space utilization. The pin assembly 6 can be quickly disassembled from the side supports, facilitating the replacement of worn sliders or connecting rod assemblies 4.

[0061] When the supported object thermally expands, the elastic component 3 compresses or releases, while the rigid bridging of the pin assembly 6 ensures that the mechanism does not shift laterally. Specifically, the drive assembly 7 pushes the second slider 5 along the pin, the connecting rod assembly 4 pulls the first slider 2 to press against the elastic component 3, and the force is transmitted to the two support parts through the connecting part 13, which can withstand bidirectional loads and avoid local deformation caused by single-point force. The two support parts keep the pin absolutely horizontal, preventing movement jamming due to unilateral deformation. The rebound force of the elastic component 3 is evenly transmitted to the support frame 1 through the connecting part 13, preventing local stress exceeding limits. In other words, the support frame 1 adopts a split design, including the first support part 11, the second support part 12, and the connecting part 13, and combined with the bridging fixing method of the pin assembly 6, significantly improving the overall structural performance.

[0062] In this embodiment, the second slider 5 is provided with multiple pairs of mounting holes 52 at axial intervals, and each pair of mounting holes 52 is through which a pin assembly 6 passes. The axis of the mounting holes 52 is perpendicular to the moving direction of the second slider 5.

[0063] When the second slider 5 is subjected to asymmetrical loads (such as lateral impacts or eccentric forces), multiple sets of pin assemblies 6 share the torque, preventing a single pin from deforming and failing due to excessive bending moment. After the load is distributed, the contact pressure between a single pin and the slider decreases, extending its service life; even if a pin develops a gap due to wear, the remaining pins can still maintain their guiding function. In other words, by providing multiple pairs of mounting holes 52 on the second slider 5 to accommodate the pin assemblies 6, this multi-axis collaborative support significantly improves the mechanism's load capacity and motion accuracy.

[0064] In this embodiment, a limiting block 132 is integrally formed at the end of the receiving groove 131 away from the pin assembly 6, and the limiting block 132 is provided corresponding to the receiving groove 131; wherein, the limiting block 132 includes a stop surface perpendicular to the axial direction of the receiving groove 131, which is used to limit the maximum displacement of the first slider 2.

[0065] Furthermore, when the first slider 2 is driven to slide by the elastic component 3 or an external force, the limiting block 132 acts as a physical barrier, forcibly limiting its maximum displacement to prevent the slider from sliding out of the receiving groove 131 and causing mechanism failure. In particular, the limiting block 132 ensures that the spring will not be over-compressed and fail; that is, by limiting the compression limit of the elastic component 3 through the limiting block 132, the first slider 2 is prevented from further compressing the elastic component 3, preventing spring compression failure or permanent deformation of the rubber pad, and maintaining its long-term stable elastic performance. In addition, the connection part 13 between the limiting block 132 and the support frame 1 is integrally cast or machined. When the first slider 2 impacts the limiting block 132, the impact force is directly transmitted to the entire structure of the support frame 1, rather than a local connecting part, avoiding the risk of fracture caused by stress concentration. In other words, the design of the limiting block 132 integrally formed at the end of the receiving groove 131 significantly improves the safety and stability of the mechanism through mechanical hard limiting and precise control of the range of motion.

[0066] like Figures 1 to 10 As shown, a dual-purpose cooling and heating fan includes a cooling / heating switching support mechanism 10, a housing assembly 20, an air duct assembly 30, and a heating element 50. The driving component 7 of the cooling / heating switching support mechanism 10 drives a second slider 5 to move axially along a pin assembly 6. The housing assembly 20 is connected to the cooling / heating switching support mechanism 10 and forms a receiving cavity for an airflow channel. The housing assembly 20 has a first air inlet 201 and a first air outlet 202 communicating with the receiving cavity. The air duct assembly 30 is disposed within the receiving cavity. The heating element 50 is connected to the second slider 5 and located within the receiving cavity. The driving component reciprocates along the axial direction of the pin assembly 6 via the second slider 5, causing the heating element 50 to move closer to or further away from the first air outlet 202.

[0067] When the user selects the warm air mode, such as Figure 9 and Figure 10 As shown, when the drive assembly 7 (such as a motor or cylinder) pushes the second slider 5 to move axially to the right along the pin assembly 6, the linear movement of the second slider 5 drives the connecting rod assembly 4 to move to the right. The connecting rod assembly 4 then drives the first slider 2 to first compress the elastic component 3 upwards. Afterwards, the elastic component 3, through its released elastic potential energy, pushes the first slider 2 downwards, simultaneously driving the connecting rod assembly 4 to further move the second slider 5 to the right. Driven by the second slider 5, the heating component 50 approaches the first air outlet 202, meaning the heating component 50 and the first air outlet 202 are correspondingly positioned. At this time, airflow from the duct assembly 30 through the heating component 50 generates warm air, which then flows to the first air outlet 202, achieving the warm air function. When the user selects the cold air mode, as... Figure 4 and Figure 5As shown, when the drive component 7 moves in the opposite direction, i.e., to the left, the drive component 7 (such as a motor or cylinder) pushes the second slider 5 to move to the left along the pin assembly 6. The linear movement of the second slider 5 drives the connecting rod assembly 4 to move to the left, and the connecting rod assembly 4 drives the first slider 2 to first compress the elastic component 3 upward. Then, the elastic component 3 pushes the first slider 2 downward through its released elastic potential energy, while simultaneously pushing the connecting rod assembly 4 to further drive the second slider 5 to move to the left. Under the action of the second slider 5, the heating component 50 moves away from the first air outlet 202. At this time, the air blown out by the air duct assembly 30 does not pass through the heating component 50, but flows directly to the first air outlet 202, realizing the cooling function. In other words, this dual-purpose fan, by combining with the cooling and heating switching support mechanism 10, realizes efficient switching between cooling mode and heating mode.

[0068] In this embodiment, as Figure 8 As shown, the heating assembly 50 includes a heating bracket 501 and a heating element 502; the heating bracket 501 is connected to the second slider 5 and located within the receiving cavity; the heating bracket 501 is provided with a plurality of parallel air outlet grilles; the heating element 502 is disposed on the heating bracket 501. Preferably, the heating element 502 is a PTC heating element 502.

[0069] In this embodiment, the heating component 50 adopts a split design, including a heating bracket 501 and a heating element 502. An air outlet grille is integrated on the heating bracket 501. Multiple parallel air outlet grilles force airflow through the surface of the heating element 502 in a laminar flow state. Compared to a grille-less design, this results in more uniform heat distribution and avoids localized high temperatures, thus achieving multiple benefits such as efficient heat conduction, uniform heat dissipation, and safety protection. Furthermore, the heating element 502 is modularly installed; that is, the heating element 502 is fixed to the heating bracket 501 by clips or screws, allowing for independent disassembly of a single damaged heating element 502 without the need for complete disposal.

[0070] In this embodiment, two micro switches 60 are also included. The two micro switches 60 are respectively disposed at both ends of the support frame 1 and located outside the receiving cavity. Each micro switch 60 has a trigger end, which is disposed towards the pin assembly 6.

[0071] In the cold air mode, the drive component 7 pulls the slider to its left limit, pressing the trigger of the left micro switch 60 to cut off the power to the heating element 502 and start the fan motor. The air blown out by the air duct component 30 directly passes through the first air outlet 202, achieving the cold air function. Switching from cold air mode to warm air mode, the drive component 7 pushes the slider to its right limit, triggering the trigger of the right micro switch 60 to connect the heating power to the heating element 50. The heating element 50 is positioned between the air outlet of the air duct component 30 and the first air outlet 202. At this time, the air blown out by the air duct component 30 first flows through the heating element 50 and then to the first air outlet 202, achieving the warm air function. This dual micro switch 60 limit position detection design achieves safe switching between cold and hot modes and circuit interlocking. In particular, when the heating element 50 moves to its limit position, directly pressing the trigger of the micro switch 60 makes the detection more reliable.

[0072] In this embodiment, as Figure 7 As shown, it also includes a baffle assembly 40, disposed between the air duct assembly 30 and the heating element 50; the baffle assembly 40 includes an integrally formed first baffle portion 401 and a second baffle portion 402; the first baffle portion 401 extends toward the air duct assembly 30 and surrounds the outer periphery of the air duct assembly 30; the second baffle portion 402 has a second air outlet 4021 on the side near the first baffle portion 401, and the second air outlet 4021 is coaxially arranged with the first air outlet 202; when the heating element 50 moves to correspond to the second air outlet 4021, the heating element 50 abuts against the first baffle portion 401, and the end of the first baffle portion 401 facing away from the air duct assembly 30 is flush with the heating element 50.

[0073] Furthermore, the first baffle portion 401 extends toward the air duct assembly 30, that is, the first baffle portion 401 surrounds the outer periphery of the air duct assembly 30. This ensures that the airflow can only flow from the air inlet 201, under the action of the blower and motor of the air duct assembly 30, from the air outlet of the air duct assembly 30 to the second air outlet 4021, and then through the second air outlet 4021 to the first air outlet 202, thereby achieving directional airflow guidance and backflow blocking. Specifically, in the cold air mode, when the heating element 50 is far away, the first baffle portion 401 and the air duct assembly 30 form a relatively sealed air duct, and the airflow can flow directly from the first air outlet 202 in a straight line. In the first air outlet 202, the airflow is concentrated and flows out from the air outlet, thus achieving the cooling function. In the heating mode, the heating element 50 abuts against the first baffle 401, and the edge of the first baffle 401 is flush with the heating element 50, forming a semi-enclosed space. This traps air on the heating element 50, improving heat exchange efficiency. At this time, the heating element 50 is located between the second air outlet 4021 and the first air outlet 202. That is, the air generated by the air duct assembly 30 can only flow through the second air outlet 4021 and the heating element 50 to generate hot airflow. Then, the hot airflow flows to the first air outlet 202, making the hot airflow more concentrated and blowing out, thus achieving the heating function. Preferably, the second air outlet 4021 is designed with a narrowing opening to accelerate its jet speed and create a negative pressure zone in the second air outlet 4021 to further suppress backflow. In other words, the dual-structure design of the baffle assembly 40, which includes a first baffle part 401 and a second baffle part 402, achieves efficient isolation and backflow prevention control of hot and cold modes through dynamic reconstruction of airflow path and enhanced sealing.

[0074] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0075] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this 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.

[0076] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0077] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0078] In this application, unless otherwise expressly 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 being 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 being 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.

[0079] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0080] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0081] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A cold and warm switching support mechanism characterized by, include: The support frame is provided with an upward-opening receiving slot; An elastic component is disposed within the receiving groove; A first slider is connected to the elastic component and slides along the side wall of the receiving groove; A pin assembly is provided on the support frame and is positioned close to the receiving groove; The second slider is sleeved on the pin assembly and moves axially along the pin assembly; A linkage assembly, the two ends of which are respectively connected to the first slider and the second slider; A drive assembly is disposed on the support frame and connected to the second slider to drive the second slider to reciprocate along the pin assembly.

2. The heating and cooling switching support mechanism according to claim 1, characterized by The connecting rod assembly has a mounting groove at one end away from the second slider, and the first slider has a first protrusion that engages with the mounting groove to mount the connecting rod assembly on the first slider.

3. The heating and cooling switching support mechanism according to claim 1, wherein The second slider is provided with a groove, and the connecting rod assembly is provided with a second protrusion; the second protrusion is inserted into the groove and slides along the groove to drive the second slider to move.

4. The heating and cooling switching support mechanism according to claim 1, wherein The support frame includes a first support part, a second support part, and a connecting part. The first support part and the second support part are respectively connected to both ends of the connecting part. The connecting part is provided with the receiving groove. One end of the pin assembly is provided with the first support part, and the other end is provided with the second support part, and it is located on one side of the connecting part.

5. The heating and cooling switching support mechanism according to claim 1, wherein The second slider is provided with multiple pairs of mounting holes spaced apart along the axial direction, and each pair of mounting holes is fitted with a pin assembly. The axis of the mounting holes is perpendicular to the moving direction of the second slider.

6. The heating and cooling switching support mechanism according to claim 1, wherein The end of the receiving groove away from the pin assembly is integrally formed with a limiting block, and the limiting block is set corresponding to the receiving groove.

7. A dual-purpose fan, characterized by include: The heating and cooling switching support mechanism as described in any one of claims 1-6; the driving component of the heating and cooling switching support mechanism is used to drive the second slider to move axially along the pin assembly; The housing assembly is connected to the heating and cooling switching support mechanism and forms a receiving cavity for an airflow channel; the housing assembly is provided with a first air inlet and a first air outlet communicating with the receiving cavity; The air duct assembly is disposed within the receiving cavity; A heating element is connected to the second slider and located within the receiving cavity; The driving component moves the heating component closer to or away from the first air outlet by reciprocating along the axial direction of the pin component via the second slider.

8. The dual-purpose fan as claimed in claim 7, wherein, The heating component includes: A heating bracket is connected to the second slider and located within the receiving cavity; the heating bracket is provided with multiple parallel air outlet grilles; The heating element is disposed on the heating support.

9. The dual-purpose fan as claimed in claim 7, wherein, It also includes two microswitches, which are respectively located at both ends of the support frame and outside the receiving cavity. Each microswitch has a trigger end, which is positioned towards the pin assembly.

10. The dual-purpose fan as claimed in claim 7, wherein, It also includes a baffle assembly disposed between the air duct assembly and the heating assembly; the baffle assembly includes: The first baffle extends around the air duct assembly; The second baffle portion is integrally formed with the first baffle portion; the second baffle portion is provided with a second air outlet on the side near the first baffle portion, and the second air outlet is coaxially arranged with the first air outlet; when the heating component moves to the position corresponding to the second air outlet, the heating component abuts against the first baffle portion.

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