Fan blade assembly structure and air supply device

Abstract

The invention relates to a fan blade assembly structure and an air supply device, and the fan blade assembly structure comprises a bearing seat, a bearing wheel and a pressing piece. A mounting groove is formed in the bearing seat, and one end, in the first direction, of the mounting groove is a mounting opening. The bearing wheel is arranged in the mounting groove and is provided with a shaft hole and a slot; the axis of the shaft hole is parallel to the first direction, and one end of the shaft hole in the first direction faces the mounting port. The groove depth direction of the insertion groove is parallel to the first direction, and the groove opening of the insertion groove faces the installation opening. The pressing piece is inserted into the inserting groove and is configured to enable the bearing wheel to deform to increase the size of the bearing wheel in the second direction when the pressing piece is inserted into the inserting groove, so that the bearing wheel is in interference fit with the mounting groove. Wherein the second direction intersects with the first direction. According to the fan blade assembly structure, the interference fit between the bearing wheel and the bearing seat is generated after the pressing piece is inserted into the inserting groove. Therefore, when the bearing wheel is assembled to the mounting groove of the bearing seat, the resistance needing to be overcome is small, and mounting can be achieved more easily.

Description

Technical Field

[0001] This application relates to the field of assembly structure technology, and in particular to a fan blade assembly structure and an air supply device. Background Technology

[0002] The blades of a cross-flow fan are generally long and cylindrical. When the blades rotate, air enters from the fan's opening, passes through the blades, and then exits from the other side, forming a supply airflow. Cross-flow fans have advantages such as uniform and comfortable airflow and low noise.

[0003] In related technologies, cross-flow fans typically also have an assembly structure consisting of a bearing wheel and a bearing housing, with the assembly mechanism used for mounting the cross-flow fan blade shaft. Specifically, the bearing wheel is fixed to the bearing housing, and the shaft of the cross-flow fan blade is inserted into the bearing wheel. The assembly method between the bearing wheel and the bearing housing is usually direct forced insertion or hammering insertion; however, this method suffers from difficulties in assembly and low assembly efficiency. Summary of the Invention

[0004] Therefore, it is necessary to provide a fan blade assembly structure and air supply device that can reduce the difficulty of assembling the bearing wheel and bearing housing, in order to address the above problems.

[0005] A wind turbine blade assembly structure, the wind turbine blade assembly structure comprising:

[0006] A bearing housing having a mounting groove therein, wherein one end of the mounting groove in a first direction is a mounting opening;

[0007] A bearing wheel is disposed in the mounting groove and has a shaft hole and a slot; the axis of the shaft hole is parallel to the first direction, and one end of the shaft hole in the first direction faces the mounting opening; the groove depth direction of the slot is parallel to the first direction, and the groove opening of the slot faces the mounting opening;

[0008] A pressing member is inserted into the slot and configured to deform the bearing wheel when inserted into the slot to increase the size of the bearing wheel in a second direction, thereby causing the bearing wheel to form an interference fit with the mounting groove; wherein the second direction intersects the first direction.

[0009] In one embodiment, the bearing wheel includes a main body and an interference fit, the main body having the shaft hole;

[0010] The interference fit is provided on the main body and is configured to move relative to the main body in the second direction; the pressing member is configured to drive the interference fit to move in the second direction when inserted into the slot, so as to increase the size of the bearing wheel in the second direction.

[0011] In one embodiment, the main body has a movable groove, the movable groove having a first end and a second end disposed opposite to each other in the second direction, the first end being formed in the groove wall of the slot, and the second end being formed in the peripheral side of the main body surrounding the first direction;

[0012] The interference fit is disposed in the movable groove and is configured to move along the movable groove in the second direction.

[0013] In one embodiment, the slot has a first groove wall and a second groove wall disposed opposite to each other in the second direction, and the first end is formed in the first groove wall; the pressing member has a plug end and a pressing end disposed opposite to each other in the first direction, the plug end has a driving surface, the driving surface intersects the first direction obliquely, and in the direction away from the pressing end, the driving surface is configured to gradually move away from the first groove wall.

[0014] And / or, the interference portion has a driven end and an exposed end disposed opposite to each other in the second direction, the driven end being located within the slot, and the exposed end being exposed to the peripheral side of the main body via the second end; the driven end has a driven surface that intersects obliquely with the first direction, and in the direction away from the exposed end, the driven surface is configured to gradually move away from the slot opening of the slot.

[0015] In one embodiment, the bearing wheel includes at least two interference fits, the main body has at least two movable grooves, all the interference fits correspond one-to-one with all the movable grooves, and each interference fit is respectively provided in one of the corresponding movable grooves.

[0016] In one embodiment, the interference fit has a limiting overlap located within the slot, wherein when the pressing member is inserted into the slot, the limiting overlap is limited to the space between the pressing member and the slot wall of the slot having the first end.

[0017] In one embodiment, the slot wall has a groove, and the pressing member includes a pressing body and a protrusion; the protrusion is disposed on the surface of the pressing body, and when the pressing member is inserted into the slot, the protrusion can engage with the groove.

[0018] In one embodiment, the protrusion has a guide surface; in the first direction, the guide surface is located on the side of the protrusion facing the bottom of the slot;

[0019] The pressing body has a plug end and a pressing end that are disposed opposite to each other in the first direction; the guide surface intersects the first direction at an angle, and in the direction from the plug end to the pressing end, the guide surface is configured to gradually move away from the pressing body.

[0020] In one embodiment, the slot is an annular groove surrounding the shaft hole, and the pressing body is an annular structure surrounding the shaft hole.

[0021] An air supply device includes a cross-flow fan blade and the aforementioned fan blade assembly structure, wherein the shaft portion of the cross-flow fan blade is engaged with the fan blade assembly structure.

[0022] In one embodiment, the air supply device is a fan, a heater, or an air conditioner.

[0023] In the aforementioned fan blade assembly structure and air supply device, the interference fit between the bearing wheel and the bearing housing is achieved after the pressing component is inserted into the slot. Therefore, the resistance required to assemble the bearing wheel into the mounting groove of the bearing housing is relatively small, allowing for easier installation. Furthermore, after the bearing wheel is installed in the mounting groove, inserting the pressing component through the mounting port into the slot causes deformation of the bearing wheel, achieving the interference fit between the bearing wheel and the bearing housing and ensuring the stability of the bearing wheel's position relative to the bearing housing. Attached Figure Description

[0024] 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, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a partial cross-sectional structural diagram of an air supply device with a fan blade assembly structure in one embodiment of this application.

[0026] Figure 2 for Figure 1 The diagram shows an enlarged view of the air supply device at point A.

[0027] Figure 3 for Figure 1 The diagram shows the structural schematic of the fan blade assembly structure in the air supply device.

[0028] Figure 4 for Figure 3 The diagram shows a cross-sectional view of the wind turbine assembly structure.

[0029] Figure 5 for Figure 3 The diagram shows the structure of the fan blade assembly after the bearing housing is hidden.

[0030] Figure 6 for Figure 5 The diagram shows a cross-sectional view of the wind turbine assembly structure.

[0031] Figure 7 for Figure 1 The diagram shows the structure of the fan blade assembly in the air supply device during the insertion of the pressing component into the slot.

[0032] Figure 8 for Figure 7 The diagram shows a cross-sectional view of the wind turbine assembly structure.

[0033] Figure 9 for Figure 7 The diagram shows the structure of the fan blade assembly after the bearing housing is hidden.

[0034] Figure 10 for Figure 9 The diagram shows a cross-sectional view of the wind turbine assembly structure.

[0035] Figure 11 for Figure 1 The diagram shows the structural schematic of the main body of the bearing wheel in the air supply device.

[0036] Figure 12 for Figure 1 A schematic diagram of the interference fit of the bearing wheel in the air supply device shown.

[0037] Figure 13 for Figure 12 The diagram shows the structure of the interference section from another angle.

[0038] Figure 14 for Figure 1 The diagram shows the structure of the pressing component in the air supply device.

[0039] Figure 15 for Figure 14 The diagram shows the structure of the pressing component at another angle.

[0040] Explanation of reference numerals in the attached drawings: 100, fan blade assembly structure; 10, bearing housing; 11, mounting groove; 13, mounting port; 30, bearing wheel; 31, shaft hole; 33, slot; 331, first groove wall; 333, second groove wall; 335, slot; 35, main body; 351, movable groove; 3511, first end; 3513, second end; 37, interference fit; 371, driven end; 3711, driven surface; 373, exposed end; 375, limiting overlap; 50, pressing part; 51, pressing body; 511, plug end; 5111, driving surface; 513, pressing end; 53, locking protrusion; 531, guide surface; 200, air supply device; 201, fan blade; 203, shaft; 205, motor; 207, air duct shell. Detailed Implementation

[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0042] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application.

[0043] Furthermore, where the term "and / or" appears, it merely describes the relationship between related objects and indicates that three relationships can exist. For example, A and / or B can represent the relationship between A and B: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates an "or" relationship between the related objects before and after it. Where the terms "first" and "second" appear, these terms 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 specified with "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, four, five, etc., unless otherwise explicitly specified.

[0044] 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 fixed 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0047] As described in the background section, the installation of cross-flow fan blades relies on the bearing wheel and bearing housing. The bearing wheel has a spherical convex shape on its circumference, with a central hole for the cross-flow fan shaft to pass through. The bearing housing has a mounting groove for installing the bearing wheel, and the shape of the mounting groove matches that of the bearing wheel. If the bearing wheel is slightly larger than the size of the mounting groove to achieve an interference fit, installation using methods such as forced insertion requires significant external force to overcome installation resistance, resulting in assembly difficulties, low assembly efficiency, and even potential damage to the bearing housing during installation. Conversely, using a smaller bearing wheel makes it difficult to guarantee the stability of the fit between the bearing wheel and the bearing housing. Furthermore, when installing cross-flow fan blades at an angle on the subsequent production line, misalignment of the cross-flow fan shaft can easily cause the bearing wheel to flip. A flipped bearing wheel can cause operating noise, fan blade failure, motor overload, and even burnout. These problems not only affect product performance but can also reduce the overall reliability of the machine and increase after-sales maintenance costs. Therefore, the bearing wheel needs to ensure installation stability while reducing installation difficulty.

[0048] Please see Figures 1 to 10 An embodiment of this application provides a fan blade assembly structure 100, including a bearing housing 10, a bearing wheel 30, and a pressing member 50. The bearing housing 10 has a mounting groove 11, and one end of the mounting groove 11 in a first direction is a mounting opening 13. The bearing wheel 30 is disposed within the mounting groove 11 and has a shaft hole 31 and a slot 33. The axis of the shaft hole 31 is parallel to the first direction (e.g., ...). Figure 2 The X-direction is shown), and one end of the shaft hole 31 in the first direction faces the mounting opening 13. The groove depth direction of the slot 33 is parallel to the first direction, and the groove opening of the slot 33 faces the mounting opening 13. The pressing member 50 is inserted into the slot 33 and is configured to deform the bearing wheel 30 when inserted into the slot 33 to increase the bearing wheel 30 in the second direction (e.g., in the X direction). Figure 2 The dimensions (shown in the Y direction) cause the bearing wheel 30 to form an interference fit with the mounting groove 11. The second direction intersects the first direction.

[0049] Understandably, during the installation of the fan blade assembly structure 100, the bearing wheel 30 is first installed into the mounting groove 11 of the bearing housing 10 through the mounting port 13. At this time, the bearing wheel 30 and the mounting groove 11 are in a clearance fit. Then, the pressing member 50 is inserted into the slot 33 through the mounting port 13, pressing the bearing wheel 30 and causing it to deform in a second direction, thus changing the fit between it and the mounting groove 11 to an interference fit. The bearing housing 10 can be made of rubber, and the second direction can be perpendicular to the first direction.

[0050] The fan blade assembly structure 100 is used for the air supply device 200, and specifically for fixing the fan blade 201 of the air supply device 200. The air supply device 200 can be, but is not limited to, an air conditioner, a cooling fan, an air curtain machine, a heater, etc., and the fan blade 201 of the air supply device 200 can be, but is not limited to, a cross-flow fan blade, an axial flow fan blade, etc.

[0051] In one embodiment, the fan blade assembly structure 100 is used to fix the cross-flow fan blade of the air supply device 200. One end shaft portion 203 of the cross-flow fan blade is driven and engaged with the motor 205 of the air supply device 200, and the other end shaft portion 203 is inserted into the shaft hole 31 through the mounting port 13.

[0052] In the aforementioned fan blade assembly structure 100, the interference fit between the bearing wheel 30 and the bearing housing 10 is achieved after the pressing member 50 is inserted into the slot 33. Therefore, when assembling the bearing wheel 30 into the mounting groove 11 of the bearing housing 10, the resistance required is smaller, allowing for easier installation. Simultaneously, after the bearing wheel 30 is installed into the mounting groove 11, inserting the pressing member 50 into the slot 33 through the mounting port 13 causes deformation of the bearing wheel 30, achieving the interference fit between the bearing wheel 30 and the bearing housing 10 and ensuring the stability of the bearing wheel 30 relative to the bearing housing 10. Thus, the probability of the bearing wheel 30 flipping during subsequent fan blade 201 installation is reduced, consequently lowering the probability of problems such as operating noise, fan blade 201 not rotating, motor 205 overload, or even burnout in the air supply device 200.

[0053] In some embodiments, the bearing wheel 30 includes a main body 35 and an interference fit 37, the main body 35 having a shaft hole 31. The interference fit 37 is disposed in the main body 35 and configured to be movable relative to the main body in a second direction. The pressing member 50 is configured to drive the interference fit 37 to move in the second direction when inserted into the slot 33, thereby increasing the size of the bearing wheel 30 in the second direction.

[0054] Understandably, the dimension of the main body 35 in the second direction is smaller than the dimension of the mounting groove 11 in the second direction, and the two are in a clearance fit. When the pressing member 50 is inserted into the slot 33, the pressing member 50 can press the interference portion 37 outward from the main body 35, causing it to move outward, resulting in an increase in the dimension of the bearing wheel 30 in the second direction. In other words, under the drive of the pressing member 50, the interference portion 37 and the mounting groove 11 form an interference fit.

[0055] In this way, the bearing wheel 30 achieves its deformation effect through the movement of a local structure, without requiring the material to deform, thus maintaining the material's rigid state and reducing material requirements. Furthermore, since no material deformation is required, there is less structural damage to the bearing wheel 30, which helps to extend the service life of the fan blade assembly structure 100.

[0056] Specifically, the interference fit 37 can be made of a hard material, such as POM, which is not easily deformed or worn.

[0057] Please refer to the following: Figures 11 to 13 In some embodiments, the main body 35 has a movable groove 351, which has a first end 3511 and a second end 3513 disposed opposite to each other in a second direction. The first end 3511 is formed in the groove wall of the slot 33, and the second end 3513 is formed on the peripheral side of the main body 35 surrounding the first direction. An interference fit 37 is provided in the movable groove 351 and is configured to move along the movable groove 351 in the second direction.

[0058] Thus, one end of the interference portion 37 in the second direction can receive the driving force of the pressing member 50 through the first end 3511 of the movable groove 351, while the other end of the interference portion 37 in the second direction can extend through the second end 3513 of the movable groove 351 to abut against the groove wall of the mounting groove 11, thus achieving an interference fit.

[0059] In some embodiments, the interference portion 37 has a limiting overlap 375 located within the slot 33. When the pressing member 50 is inserted into the slot 33, the limiting overlap 375 can be limited between the pressing member 50 and the slot wall (i.e., the first slot wall 331) of the slot 33 having a first end 3511.

[0060] Understandably, the size of one end of the interference fit 37 with the limiting overlap 375 is larger than the first end 3511 of the movable groove 351. After the pressing member 50 is inserted, even if it is squeezed by the pressing member 50, the limiting overlap 375 can be located between the pressing member 50 and the first groove wall 331, and cannot enter the movable groove 351 through the first end 3511.

[0061] Thus, under the constraint of the limiting edge 375, even if the interference part 37 is subjected to external forces such as compression, it will not completely detach from the movable groove 351, making the structure of the bearing wheel 30 more stable.

[0062] In some embodiments, the slot 33 has a first groove wall 331 and a second groove wall 333 disposed opposite to each other in a second direction, and a first end 3511 of the movable slot 351 is formed in the first groove wall 331. The pressing member 50 has a plug end 511 and a pressing end 513 disposed opposite to each other in a first direction. The plug end 511 has a driving surface 5111, which intersects the first direction obliquely, and in the direction away from the pressing end 513, the driving surface 5111 is configured to gradually move away from the first groove wall 331.

[0063] Thus, with the drive surface 5111 angled, when the pressing member 50 is inserted along the slot 33, its movement in the first direction can be converted into an oblique force acting on the interference block 37, thereby driving the interference block to move outward from the main body 35 in the second direction. At the same time, the angled drive surface 5111 can also play a certain guiding role, reducing the difficulty of inserting the pressing member 50 and the difficulty of the pressing member 50 driving the interference block 37.

[0064] Please refer to the following: Figure 14 and Figure 15 In some embodiments, the interference fit 37 has a driven end 371 and an exposed end 373 disposed opposite each other in the second direction. The driven end 371 is located within the slot 33, and the exposed end 373 is exposed on the peripheral side of the main body 35 via a second end 3513. The driven end 371 has a driven surface 3711, which intersects obliquely with the first direction, and in the direction away from the exposed end 373, the driven surface 3711 is configured to gradually move away from the slot opening of the slot 33.

[0065] Understandably, the driven end 371 is used to receive the drive of the pressing member 50, while the exposed end 373 is used to press against the groove wall of the mounting groove 11. The limiting overlap 375 is located at the driven end 371.

[0066] Thus, the driven surface 3711 can convert the movement of the pressing member 50 along the first direction into an oblique force, causing the interference block to move outward from the main body 35 along the second direction. Simultaneously, the inclined driven surface 3711 also provides a guiding function, reducing the difficulty of inserting the pressing member 50 and driving the interference part 37. The inclined driven surface 3711 can also cooperate with the inclined driving surface 5111, further reducing the difficulty of inserting the pressing member 50 and driving the interference part 37.

[0067] In some embodiments, the bearing wheel 30 includes at least two interference portions 37, the main body 35 has at least two movable grooves 351, all interference portions 37 correspond one-to-one with all movable grooves 351, and each interference portion 37 is respectively provided in one of the corresponding movable grooves 351.

[0068] Specifically, all the movable slots 351 can be evenly arranged in the circumferential direction of the main body 35.

[0069] In this way, the bearing wheel 30 can abut against different positions of the mounting groove 11 wall through multiple interference parts 37, which helps to improve the stability of the interference fit between the bearing wheel 30 and the mounting groove 11.

[0070] Specifically, the bearing wheel 30 includes two interference fits 37, and the main body 35 has two movable grooves 351. The two interference fits 37 are respectively provided in the two movable grooves 351, and the two movable grooves 351 are symmetrically arranged.

[0071] In some embodiments, the slot 33 has a groove 335 in its wall, and the pressing member 50 includes a pressing body 51 and a latching protrusion 53. The latching protrusion 53 is disposed on the surface of the pressing body 51. When the pressing member 50 is inserted into the slot 33, the latching protrusion 53 can engage with the groove 335.

[0072] Thus, when the pressing member 50 is inserted into the slot 33, the pressing member 50 moves until the latching protrusion 53 engages with the slot 335 of the bearing wheel 30, indicating that the pressing member 50 is installed in place. The engagement between the slot 335 and the latching protrusion 53 prevents the pressing member 50 from popping out backward after being inserted into the slot 33, thereby maintaining the interference fit between the interference portion 37 and the bearing seat 10 and restricting the movement and rotation of the bearing wheel 30.

[0073] In some embodiments, the slot 33 is an annular groove surrounding the shaft hole 31, and the pressing body 51 is an annular structure surrounding the shaft hole 31.

[0074] Thus, the manufacturing difficulty of the bearing wheel 30 and the pressing part 50 is lower, and one pressing part 50 can drive multiple interference blocks, which facilitates the improvement of installation efficiency.

[0075] Specifically, at least one of the first groove wall 331 and the second groove wall 333 has a slot 335. At least two slots 335 may be provided on the groove wall of the slot 33, and the pressing member 50 includes at least two protrusions 53, which are correspondingly arranged one-to-one with the slots 335. All slots 335 and protrusions 53 may be evenly arranged in the circumferential direction of the bearing wheel 30.

[0076] Thus, the engagement between the multiple slots 335 and the protrusions 53 makes the engagement between the bearing wheel 30 and the pressing member 50 more reliable.

[0077] In some other embodiments, the slot 335 may also be a circumferential annular groove surrounding the bearing wheel 30, and the protrusion 53 may be an annular protrusion surrounding the pressing body 51.

[0078] In some embodiments, the latch 53 has a guide surface 531. In a first direction, the guide surface 531 is located on the side of the latch 53 facing the bottom of the slot 33. The pressing body 51 has a plug end 511 and a pressing end 513 disposed opposite to each other in the first direction. The guide surface 531 intersects the first direction obliquely, and in the direction from the plug end 511 to the pressing end 513, the guide surface 531 is configured to gradually move away from the pressing body 51.

[0079] Understandably, the plug end 511 is the tip of the pressing member 50 when it is inserted into the slot 33, while the pressing end 513 serves as its force-bearing end. During assembly, the plug end 511 of the pressing member 50 is aligned with the opening of the slot 33, and force is applied to the pressing end 513 to drive the pressing member 50 into the slot 33.

[0080] Thus, the guide surface 531 of the protrusion 53 can guide the protrusion 53 into the slot 33 first, so that it can engage with the slot 335 located on the slot wall of the slot 33.

[0081] In some embodiments, the opening of the slot 33 is gradually widened in the direction away from the bottom of the slot 33.

[0082] In this way, the plug end 511 of the press member 50 can be more easily aligned with the socket of the slot 33 so that the press member 50 can be inserted into the slot 33.

[0083] The aforementioned fan blade assembly structure 100 includes a bearing housing 10, a bearing wheel 30, and a pressing member 50. The bearing wheel 30 includes a main body 35 and two interference fit parts 37. The two interference fit parts 37 are arranged in a ring around the circumference of the bearing wheel 30. Each interference fit part 37 has a limiting overlap 375 at its driven end 371 to prevent it from detaching from the main body 35 via its movable groove 351. The pressing member 50 is inserted circumferentially into the slot 33 of the bearing wheel 30, and the driving surface 5111 of its plug end 511 has a guiding function. When the pressing member 50 is pressed, the interference fit parts 37 expand outward under the action of the pressing member 50, forming an interference fit with the bearing housing 10. A locking protrusion 53 is provided on the side of the pressing member 50. When the pressing member 50 moves into the slot 33, the locking protrusion 53 moves until it engages with the locking groove 335 of the bearing wheel 30, indicating that the pressing member 50 is properly installed. The slot 335 engages with the protrusion 53 to prevent the pressing part 50 from popping out, maintain the interference fit between the interference part 37 and the bearing seat 10, and limit the movement and rotation of the bearing wheel 30.

[0084] When assembling the fan blade assembly structure 100, the bearing wheel 30 can be first installed into the mounting groove 11 of the bearing housing 10, and then the pressing member 50 can be inserted into the slot 33. The pressing member 50 can be pressed using a tool or manually to make the bearing wheel 30 and the bearing housing 10 form an interference fit. In use, simply insert the shaft part 203 of the fan into the shaft hole 31 of the bearing wheel 30.

[0085] The fan blade assembly structure 100 divides the bearing wheel 30 into two parts: a main body 35 and an interference fit 37. This allows the bearing wheel 30 to smoothly enter the bearing housing 10 during assembly. Then, pressure is applied by the pressing member 50, causing the interference fit 37 to move towards the circumference of the wheel and form an interference fit with the bearing housing 10, thereby achieving a tight assembly of the bearing wheel 30. The pressing member 50 and the bearing wheel 30 are further enhanced by the fixed fit between the locking protrusion 53 and the locking groove 335.

[0086] In this way, the fan blade assembly structure 100 can not only make the bearing wheel 30 enter the bearing seat 10 with less effort, but also prevent the bearing wheel 30 from turning over due to the shaft part 203 when the cross-flow fan blade is installed at an angle on the production line, which would cause noise, the whole machine not to rotate, and the motor 205 to burn out. This achieves the technical effect of improving product assembly efficiency and reliability.

[0087] This application also provides an air supply device 200, including a cross-flow fan blade and the aforementioned fan blade assembly structure 100, wherein the shaft portion 203 of the cross-flow fan blade is engaged with the fan blade assembly structure 100.

[0088] To achieve its normal function, the air supply device 200 also includes a motor 205, a duct housing 207, etc. An air duct is formed inside the duct housing 207, and mounting holes are provided at the ends of the air duct for mounting the fan blade assembly structure 100.

[0089] When assembling the air supply device 200, the fan blade assembly structure 100 is first installed relative to the air duct shell 207, and then the shaft part 203 at one end of the cross-flow fan blade is obliquely inserted into the shaft hole 31 of the bearing wheel 30, while the other end is connected to the motor 205 for transmission.

[0090] In some embodiments, the air supply device 200 is a fan, heater, or air conditioner.

[0091] Thus, when the fan blade 201 is installed, the probability of the bearing wheel 30 flipping is reduced, and the probability of the air supply device 200 experiencing operating noise, the fan blade 201 not turning, the motor 205 being overloaded or even burning out is correspondingly reduced.

[0092] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A fan blade assembly structure, characterized in that, The fan blade assembly structure includes: The bearing housing (10) has a mounting groove (11) therein, and one end of the mounting groove (11) in the first direction is a mounting opening (13). A bearing wheel (30) is disposed in the mounting groove (11) and has a shaft hole (31) and a slot (33); the axis of the shaft hole (31) is parallel to the first direction, and one end of the shaft hole (31) in the first direction faces the mounting opening (13); the groove depth direction of the slot (33) is parallel to the first direction, and the groove opening of the slot (33) faces the mounting opening (13). A pressing member (50) is inserted into the slot (33) and configured to deform the bearing wheel (30) to increase the size of the bearing wheel (30) in the second direction when inserted into the slot (33), so that the bearing wheel (30) forms an interference fit with the mounting groove (11); wherein the second direction intersects the first direction.

2. The wind turbine assembly structure according to claim 1, characterized in that, The bearing wheel (30) includes a main body (35) and an interference fit (37), the main body (35) having the shaft hole (31); The interference portion (37) is provided on the main body portion (35) and is configured to be movable relative to the main body in the second direction; the pressing member (50) is configured to drive the interference portion (37) to move in the second direction when inserted into the slot (33) to increase the size of the bearing wheel (30) in the second direction.

3. The wind turbine assembly structure according to claim 2, characterized in that, The main body (35) has a movable groove (351), which has a first end (3511) and a second end (3513) disposed opposite to each other in the second direction. The first end (3511) is formed in the groove wall of the slot (33), and the second end (3513) is formed on the peripheral side of the main body (35) surrounding the first direction. The interference portion (37) is provided in the movable groove (351) and is configured to be movable along the movable groove (351) in the second direction.

4. The wind turbine assembly structure according to claim 3, characterized in that, The slot (33) has a first groove wall (331) and a second groove wall (333) disposed opposite to each other in the second direction, and the first end (3511) is formed in the first groove wall (331); the pressing member (50) has a plug end (511) and a pressing end (513) disposed opposite to each other in the first direction, the plug end (511) has a driving surface (5111), the driving surface (5111) intersects the first direction obliquely, and in the direction away from the pressing end (513), the driving surface (5111) is configured to gradually move away from the first groove wall (331). And / or, the interference portion (37) has a driven end (371) and an exposed end (373) disposed opposite to each other in the second direction, the driven end (371) being located in the slot (33), and the exposed end (373) being exposed on the peripheral side of the main body portion (35) via the second end (3513); the driven end (371) has a driven surface (3711) that intersects obliquely with the first direction, and in the direction away from the exposed end (373), the driven surface (3711) is configured to gradually move away from the slot opening of the slot (33).

5. The wind turbine assembly structure according to claim 3, characterized in that, The bearing wheel (30) includes at least two interference fits (37), and the main body (35) has at least two movable grooves (351). All the interference fits (37) correspond one-to-one with all the movable grooves (351), and each interference fit (37) is respectively provided in one of the corresponding movable grooves (351).

6. The wind turbine assembly structure according to claim 3, characterized in that, The interference portion (37) has a limiting edge (375) located inside the slot (33). When the pressing member (50) is inserted into the slot (33), the limiting edge (375) can be limited between the pressing member (50) and the slot wall of the slot (33) with the first end (3511).

7. The wind turbine assembly structure according to any one of claims 2-6, characterized in that, The slot (33) has a groove (335) in its wall. The pressing member (50) includes a pressing body (51) and a protrusion (53). The protrusion (53) is located on the surface of the pressing body (51). When the pressing member (50) is inserted into the slot (33), the protrusion (53) can engage with the groove (335).

8. The wind turbine assembly structure according to claim 7, characterized in that, The protrusion (53) has a guide surface (531); in the first direction, the guide surface (531) is located on the side of the protrusion (53) facing the bottom of the slot (33); The pressing body (51) has a plug end (511) and a pressing end (513) disposed opposite to each other in the first direction; the guide surface (531) intersects the first direction obliquely, and in the direction from the plug end (511) to the pressing end (513), the guide surface (531) is configured to gradually move away from the pressing body (51).

9. The wind turbine assembly structure according to claim 7, characterized in that, The slot (33) is an annular groove surrounding the shaft hole (31), and the pressing body (51) is an annular structure surrounding the shaft hole (31).

10. An air supply device, characterized in that, It includes a cross-flow fan blade and a fan blade assembly structure as described in any one of claims 1-9, wherein the shaft portion (203) of the cross-flow fan blade is engaged with the fan blade assembly structure.

11. The air supply device according to claim 10, characterized in that, The air supply device is a fan, heater, or air conditioner.

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