Fan assembly

Abstract

A fan assembly includes: an impeller; the circuit module is used for controlling the operation of the impeller; the impeller is rotatably connected to the fixing part, the fixing part is provided with an opening part, and at least part of the opening part exposes the circuit module; the cover part is used for opening or closing the opening part; the fan assembly further comprises a wing part and a protruding part which are oppositely arranged on at least one side of the cover part. The sliding part is arranged on at least one side wall forming the opening part, and at least part of the sliding part is located between the wing part and the protruding part in the vertical direction when the cover part is located at the closing position for closing the opening part; and a first gap is formed between the sliding part and the end wall forming the opening part, so that the vertical movement stroke of the protruding part relative to the opening part is avoided when the opening part is opened or closed by the cover part. By the adoption of the technical scheme, the cover part of the fan assembly can be more convenient and faster to disassemble and assemble.

Description

Technical Field

[0001] The utility model embodiment relates to the technical field of household appliances, and in particular to a fan assembly. Background Art

[0002] Most household appliances are equipped with fan assemblies to solve the heating problem and ensure the normal operation of household appliances. Existing fan assemblies usually include a housing, a rotatable fan portion housed in the housing, and a circuit module (e.g., a PCB (Printed Circuit Board)). The circuit module can be used to control the fan switch and the speed of the fan. In order to avoid short circuits and other faults caused by dust on the circuit module, the circuit module is usually set in the housing. When inspecting and repairing the circuit module, the entire fan assembly needs to be disassembled to expose the circuit module, which is very troublesome.

[0003] A fan assembly A100 is currently used as follows Figure 1 The structure shown, in order to make the above-mentioned inspection and maintenance operations simpler and easier to operate, by opening an opening A2 on the shell A1 and cooperating with a pressure cover A3 for opening or closing the opening A2, the circuit module can be exposed without disassembling the entire fan assembly A100, making it easy to inspect the internal structure of the circuit module or other fan assemblies A100.

[0004] However, continue to refer to Figure 1 When assembling the existing pressure cover A3, it is necessary to first clamp one end of the pressure cover A3 into the predetermined position of the shell A1, and then manually press the pressure cover A3 with the thumb to rotate downward with the aforementioned end as the axis to perform interference installation with the shell A1. Since the pressure cover A3 and the shell A1 are interference fit, it is necessary to manually apply a large pressing force (about 60N (Newton)) to the pressure cover A3, and it is necessary to continue to press the pressure cover A3 downward until the pressure cover A3 is completely flush with the shell A1 and no longer rebounds, before the installation is completed. This assembly method is a hard connection, and excessive pressing force can easily cause the buckle on the side of the pressure cover A3 to break, and the pressure cover A3 can only be scrapped. In addition, this assembly method is not ergonomic, and long-term pressing and assembly will cause discomfort to employees' hands.

[0005] In addition, the existing fan assembly has the following objective factors: small overall size, compact internal component layout, and large space required for wiring harness of circuit module, which results in small operating space for disassembling the cover. Therefore, there is an urgent need for a fan assembly that can disassemble the cover conveniently and quickly in a limited operating space. Utility Model Content

[0006] An object of an embodiment of the utility model is to provide an improved fan assembly.

[0007] Therefore, an embodiment of the utility model provides a fan assembly, comprising: an impeller; a circuit module for controlling the operation of the impeller; a fixed portion, the impeller is rotatably connected to the fixed portion, the fixed portion is provided with an opening portion, and the opening portion at least partially exposes the circuit module; a cover portion, for opening or closing the opening portion; the fan assembly also includes: a wing portion and a protrusion portion, which are relatively arranged on at least one side of the cover portion; a sliding portion, which is arranged on at least one side wall forming the opening portion, and when the cover portion is in a closed position closing the opening portion, the sliding portion is at least partially located between the wing portion and the protrusion portion along the up and down direction; and a first gap is provided between the sliding portion and the end wall forming the opening portion to avoid the up and down movement stroke of the protrusion portion relative to the opening portion when the cover portion opens or closes the opening portion.

[0008] Considering that the internal space of the fan assembly is compact, and there are other components (e.g., wiring harnesses, etc.) around the opening that block the cover, which makes it impossible for the cover to be installed in place by sliding from the side of the opening (in a direction parallel to the plane where the opening is located), this embodiment clamps the sliding part by the wing part and the protrusion part to reliably keep the cover in a position to close the opening to protect the circuit module from being exposed. Further, a clearance space (e.g., a first gap) is provided on the rear side of the sliding part, so that when installing, the cover can first move downward so that it at least partially enters the opening (e.g., obliquely inserts into the opening), and then slides forward to be installed in place. This installation method can ensure that the cover is reliably installed in place when the front and rear sides of the opening are blocked. Similarly, when disassembling the cover, first slide the cover in the opposite direction of the installation direction so that the protrusion enters the clearance space, and then lift the cover upward to complete the disassembly. The disassembly and assembly operation of the cover is simple and convenient, and more ergonomic.

[0009] Optionally, the protrusion can enter or leave the opening from the first gap, thereby making the operation of opening and closing the opening by the cover simpler and more convenient.

[0010] Optionally, the protrusion includes a first convex portion and a second convex portion arranged at intervals, the sliding portion includes a first slider and a second slider arranged at intervals, the first gap is used to avoid the up and down movement of the first convex portion relative to the opening, and the second gap between the first slider and the second slider is used to avoid the up and down movement of the second convex portion relative to the opening. Thus, through the mutual cooperation between the first convex portion and the corresponding first slider, and the mutual cooperation between the second convex portion and the corresponding second slider, the stability and firmness of the connection between the cover and the fixing portion are greatly enhanced.

[0011] Optionally, when the cover is in the closed position, the first slider is located between the wing and the first protrusion, and the second slider is located between the wing and the second protrusion. Thus, the cover can be reliably kept in the closed position, preventing the cover from being accidentally opened.

[0012] Optionally, the length of the second gap is not less than the length of the first protrusion, and the length of the first gap is not less than the length of the second protrusion. Thus, it is ensured that the first protrusion and the second protrusion have enough space to move during the movement, so that the cover will not be hindered during the up and down movement, thereby improving the convenience of operation.

[0013] Optionally, the surface of the protrusion facing the wing is provided with a guide surface, the guide surface extends obliquely in a direction away from the wing, and at least a portion of the sliding portion moves along the guide surface to between the wing and the protrusion. Thus, the guide surface provided on the protrusion enables at least a portion of the sliding portion to smoothly move along the guide surface to between the wing and the protrusion, which helps to smoothly close the opening of the cover, avoids collision between the protrusion and the sliding portion during the disassembly of the cover, and prolongs the service life of the components.

[0014] Optionally, the cover includes: an upper panel, the shape of which is matched with the shape of the opening; a pair of side panels, which extend from the upper panel toward the impeller, respectively, the wing is formed by the portion of at least one side of the upper panel that exceeds the corresponding side panel, and the protrusion protrudes outward from the side panel. Thus, the shape of the upper panel is matched with the shape of the opening to ensure a good closing effect, and the arrangement of the side panel, the wing and the protrusion enhances the structural strength and stability of the cover. Furthermore, the wing is formed by the portion of at least one side of the upper panel that exceeds the corresponding side panel. This design not only simplifies the production process, but also makes the appearance of the cover more concise and beautiful.

[0015] Optionally, along the first direction, the cover portion includes a tail portion and a main body portion in sequence, the wing portion and the protrusion portion are arranged on the main body portion, and the tail portion can be bent relative to the main body portion in a direction away from the fixing portion to form a handle portion. Thus, the tail portion can be bent relative to the main body portion to form a handle portion, which is convenient for users or maintenance personnel to grasp and operate the cover portion to move to open and close the opening portion.

[0016] Optionally, the main body is made of plastic material, thereby ensuring the structural strength of the cover.

[0017] Optionally, the tail is made of elastic material, so that the tail can be easily bent to form a handle, which is convenient for users or maintenance personnel to operate.

[0018] Optionally, the tail portion and the main body portion are movably connected. Thus, the movably connected tail portion and the main body portion can increase the structural flexibility of the cover portion.

[0019] Optionally, the tail portion and the main body portion are integrally formed, and the cover portion is made of an elastic material, thereby enhancing the structural integrity, practicality and durability of the cover portion.

[0020] Optionally, the tail portion and the main body portion are insert-molded or secondary-molded, thereby flexibly selecting suitable materials for the main body portion and the tail portion according to actual needs.

[0021] Optionally, the fan assembly further comprises a stop structure, and the stop structure is arranged on the end wall of the opening along the first direction to limit the maximum displacement of the cover along the first direction. Thus, the setting of the stop structure limits the maximum displacement of the cover along the first direction, and prevents the cover from being over-closed and hitting the wiring harness and other components in front of the push-in direction, causing structural damage.

[0022] Optionally, the fan assembly further comprises a sealing portion, which is fixed to the surface of the fixing portion facing away from the impeller and at least covers the gap between the cover portion and the opening portion. Thus, the sealing portion covers the gap between the cover portion and the opening portion, thereby enhancing the dustproof and waterproof performance of the fan assembly and protecting the circuit module from external damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of a fan assembly in the prior art;

[0024] Figure 2 It is an exploded view of a fan assembly according to an embodiment of the utility model;

[0025] Figure 3 yes Figure 2 A schematic diagram of the local structure of the middle opening;

[0026] Figure 4 yes Figure 2 A schematic diagram of the middle cover;

[0027] Figure 5 yes Figure 2 A schematic diagram of the matching process between the middle cover and the opening;

[0028] In the attached figure:

[0029] 100-fan assembly; 1-impeller; 11-rotating shaft; 2-circuit module; 21-fixing plate; 22-motor; 23-through hole structure; 3-fixing part; 31-opening; 311-side wall; 310-end wall; 3101-first end wall; 3102-second end wall; 32-center disk; 33-bracket structure; 312-sliding part; 3121-first slider; 3122-second slider; 313-first gap; 314-second gap; 4-cover; 41- Wing; 42-protrusion; 421-first convex portion; 4211-first end; 4212-second end; 422-second convex portion; 4221-third end; 4222-fourth end; 420-guide surface; 4201-first guide surface; 4202-second guide surface; 43-upper panel; 431-groove structure; 44-side panel; 45-main body; 46-tail; 5-stop structure; 6-sealing portion; 7-wiring harness; D1-first direction; D2-second direction. DETAILED DESCRIPTION

[0030] As mentioned in the background technology, the existing fan assembly cover assembly method is a hard connection. Excessive pressing force can easily cause the buckle on the side of the cover to break, and the cover has to be scrapped. In addition, this assembly method is not ergonomic, and long-term pressing and assembly will cause discomfort to employees' hands. In addition, the fan assembly also has objective factors such as small overall size, compact spatial layout of internal components, and the wiring harness of the circuit module taking up a lot of space, all of which result in a small operating space available for disassembly and assembly of the cover. Therefore, there is an urgent need for a fan assembly that can disassemble and assemble the cover conveniently and quickly in a limited operating space.

[0031] To solve the above technical problems, an embodiment of the utility model provides a fan assembly, which includes: an impeller; a circuit module for controlling the operation of the impeller; a fixed part, the impeller is rotatably connected to the fixed part, the fixed part is provided with an opening, and the opening at least partially exposes the circuit module; a cover part, for opening or closing the opening; the fan assembly also includes: a wing part and a protrusion part, which are relatively arranged on at least one side of the cover part; a sliding part, which is arranged on at least one side wall forming the opening part, and when the cover part is in a closed position closing the opening part, the sliding part is at least partially located between the wing part and the protrusion part along the up and down direction; and a first gap is provided between the sliding part and the end wall forming the opening part to avoid the up and down movement stroke of the protrusion part relative to the opening part when the cover part opens or closes the opening part.

[0032] In summary, the opening and the cover are connected to each other in a cooperative manner, and a sliding portion and an escape space (first gap) are provided at a position of the opening corresponding to the cover, which are used to fix the two on the one hand, and on the other hand, enable the cover to have two operating strokes relative to the opening when opening or closing the opening, including up and down movement and left and right movement. Specifically, when the cover closes the opening, the cover first at least partially enters the opening, and then slides and installs in place relative to the sliding portion; when the cover opens the opening, the cover first slides in the opposite direction relative to the sliding portion to the escape space, and then leaves the opening.

[0033] Compared with the prior art, this embodiment uses the wing and the protrusion to clamp the sliding part, so that the cover is reliably kept in the position of closing the opening to protect the circuit module from being exposed. Furthermore, a clearance space (first gap) is provided on the rear side of the sliding part, so that when installing, the cover can first move downward so that it at least partially enters the opening, and then slide forward to be installed in place. This installation method can ensure that the cover is reliably installed in place when the front and rear sides of the opening are blocked. Similarly, when disassembling the cover, first slide the cover in the opposite direction of the installation direction to allow the protrusion to enter the clearance space, and then lift the cover upward to complete the disassembly, which is simple and convenient to operate.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] Figure 2 1 is an exploded view of a fan assembly 100 according to an embodiment of the utility model. Figure 3 yes Figure 2 A schematic diagram of the partial structure of the middle opening 31, Figure 4 yes Figure 2 Schematic diagram of the middle cover 4. For ease of description, Figure 2 The direction from the middle fixing part 3 to the impeller 1 is recorded as the second direction D2. In this embodiment, the upper side, the upper part and the upper portion refer to the opposite direction of the second direction D2, and the lower side, the lower part and the lower portion refer to the second direction D2.

[0036] The fan assembly 100 described in this embodiment can be widely used in various household appliances, such as refrigerators, range hoods, and other household appliances that need to dissipate heat from key components in a timely manner during operation. By arranging the fan assembly 100 at key components, such as the control panel, the motor 22, etc., it is possible to effectively avoid local overtemperature damage to the above key components. Thus, the service life of the household appliance can be extended.

[0037] refer to Figure 2The fan assembly 100 may include: an impeller 1; a circuit module 2 for controlling the operation of the impeller 1; a fixing portion 3, the impeller 1 being rotatably connected to the fixing portion 3, the fixing portion 3 being provided with an opening portion 31, the opening portion 31 at least partially exposing the circuit module 2; a cover portion 4 for opening or closing the opening portion 31; the fan assembly 100 further includes: a wing portion 41 and a protrusion 42, which are relatively arranged on at least one side of the cover portion 4; a sliding portion 312, which is arranged on at least one side wall 311 forming the opening portion 31, when the cover portion 4 is in a closed position closing the opening portion 31, the sliding portion 312 is at least partially located between the wing portion 41 and the protrusion 42 along the up and down direction; and a first gap 313 is provided between the sliding portion 312 and the end wall 310 forming the opening portion 31, so as to avoid the up and down movement stroke of the protrusion 42 relative to the opening portion 31 when the cover portion 4 opens or closes the opening portion 31.

[0038] Specifically, the impeller 1 is a core component of the fan assembly 100, and can generate wind flow (or airflow) when the impeller 1 rotates. The impeller 1 can be, for example, an axial flow impeller, a centrifugal impeller, a mixed flow impeller, and a blade impeller. Those skilled in the art can select a suitable impeller type according to the specific application scenario and requirements of the fan assembly 100. At the same time, when selecting the impeller type, it is also necessary to comprehensively consider the material, size, speed and other parameters of the impeller to ensure that it can meet the heat dissipation function of household appliances.

[0039] Furthermore, the circuit module 2 can be connected to the impeller 1 through a wire to achieve control of the impeller 1 .

[0040] In a typical application scenario, the circuit module 2 may include electronic components such as a motor driver, a control circuit, and a sensor, and connect them together through a circuit board. The motor driver receives a signal from the control circuit to control the rotation, stop, and speed regulation of the impeller 1. The control circuit may receive an external signal (such as a remote control, a switch, etc.) or an internal signal (such as a temperature sensor) and control the operating state of the impeller 1 according to the signal.

[0041] Furthermore, the circuit module 2 can be electrically connected to electrical components (such as a power supply, etc.) outside the fan assembly 100 through a plurality of wire harnesses 7 .

[0042] Further reference Figure 2 The circuit module 2 may include a fixing plate 21 and a motor 22. The motor 22 is used to drive the impeller 1 to rotate. Further, the fixing plate 21 is located above the motor 22 and is in a disc shape. The motor 22 is connected to the surface of the fixing plate 21 facing the second direction D2.

[0043] Furthermore, a surface of the fixing plate 21 facing away from the motor 22 is fixedly connected to the fixing portion 3 .

[0044] Furthermore, the fixing portion 3 is a supporting structure of the fan assembly 100 and is used to fix the impeller 1 and the circuit module 2 .

[0045] In some embodiments, the fixing portion 3 may be made of a solid material such as metal or plastic, so that the fixing portion 3 has sufficient strength to ensure the structural stability of the fan assembly 100 .

[0046] Furthermore, the fixing portion 3 may include a central disk 32 and a plurality of bracket structures 33 extending from the central disk 32. The bracket structure 33 may be used to fix the fan assembly 100 as a whole at a preset position, and the wiring harness 7 of the fan assembly 100 may also be wound around the bracket structure 33. The preset position may be determined according to the actual setting position of the component that needs to dissipate heat.

[0047] Furthermore, the circuit module 2 may be provided with a through-hole structure 23 extending along the second direction D2, and the impeller 1 may be rotatably connected to the fixing portion 3 by the rotating shaft 11 passing through the through-hole structure 23. Thus, it can be ensured that the impeller 1 can rotate smoothly, and the rotating shaft 11 can also withstand a certain load and vibration, further improving the structural stability of the fan assembly 100.

[0048] Combination Figure 2 and Figure 3 The fixing part 3 has an opening 31, and the cover 4 is adapted to the opening 31, and the cover 4 is detachable. Therefore, it is convenient to inspect and repair the circuit module 2. Furthermore, the cover 4 can be used to protect the circuit module 2 from external factors such as dust and moisture when the opening 31 is closed.

[0049] In some non-limiting embodiments, the cover 4 may be made of metal, plastic or other materials to have higher strength and corrosion resistance.

[0050] Furthermore, at least one side of the cover 4 may be provided with a wing portion 41 and a protrusion 42. For example, Figures 2 to 5 In the illustrated embodiment, both sides of the cover 4 may be provided with wing portions 41 and protrusions 42 .

[0051] In a variation, the wing portion 41 and the protrusion 42 may be provided on one side of the cover portion 4. The other side of the cover portion 4 may be in surface contact with the side wall 311 forming the opening portion 31.

[0052] Furthermore, along the second direction D2, a track is formed between the wing 41 and the protrusion 42 for the sliding portion 312 to slide. When the cover 4 is located at a position to close the opening 31, along the second direction D2, at least a portion of the sliding portion 312 is located between the wing 41 and the protrusion 42. In other words, when the cover 4 closes the opening 31, the sliding portion 312 is clamped by the wing 41 and the protrusion 42. Thus, the sliding portion 312, the wing 41 and the protrusion 42 cooperate to limit the displacement of the cover 4 and the fixing portion 3 in the second direction D2 and the opposite direction thereof.

[0053] Further, in the process of installing the cover 4 to close the opening 31, the movement direction of the cover 4 can be recorded as the first direction D1. In this scenario, the front-to-back direction can be, for example, the first direction D1 and the opposite direction thereof. Further, along the first direction D1, the opening 31 can have two opposite end walls 310, for example, a first end wall 3101 and a second end wall 3102. Among them, the second end wall 3102 is located in front of the first end wall 3101 along the first direction D1. Further, a first gap 313 is formed between the sliding portion 312 and the first end wall 3101.

[0054] Furthermore, the protrusion 42 can enter or leave the opening 31 from the first gap 313. Thus, the operation of opening and closing the opening 31 by the cover 4 can be made simpler and more convenient.

[0055] In a typical application scenario, during the installation of the cover 4, the cover 4 needs to first move along the second direction D2 to the first position, and then move along the first direction D1 to the second position. In the process of moving along the second direction D2 to the first position, the protrusion 42 will pass through the first gap 313 when moving with the cover 4 as a whole. Therefore, the first gap 313 is used to avoid the up and down movement of the protrusion 42.

[0056] Specifically, when the cover 4 is located at the first position, the protrusion 42 is located below the sliding portion 312 along the second direction D2 and behind the sliding portion 312 along the first direction D1. Further, during the movement of the cover 4 from the first position to the second position, at least a portion of the sliding portion 312 moves in the track formed by the wing 41 and the protrusion 42. Further, when the cover 4 is located at the second position, the cover 4 completely closes the opening 31. At this time, the sliding portion 312 is located between the protrusion 42 and the wing 41, and the sliding portion 312, the protrusion 42 and the wing 41 cooperate with each other to limit the relative displacement of the cover 4 and the fixing portion 3 in the second direction D2, so that the cover 4 can firmly close the opening 31.

[0057] From the above, the wing 41 and the protrusion 42 cooperate to clamp the sliding part 312, so that the cover 4 is reliably kept in the position of closing the opening 31 to protect the circuit module 2 from being exposed. Further, a clearance space (for example, a first gap 313) is provided at the rear side of the sliding part 312, so that when installing, the cover 4 first moves downward to at least partially enter the opening 31, and then slides forward to be installed in place. This installation method can ensure that the cover 4 is reliably installed in place when the front and rear sides of the opening 31 are blocked. Similarly, when disassembling the cover 4, first slide the cover 4 in the opposite direction of the installation direction to allow the protrusion 42 to enter the first gap 313, and then lift the cover 4 upward to complete the disassembly. The disassembly and assembly operation of the cover 4 is simple, convenient, and more ergonomic.

[0058] In one embodiment, there may be two or more protrusions 42 , and there may be two or more corresponding sliding portions 312 .

[0059] For example, refer to Figures 2 to 4 The protrusion 42 includes a first convex portion 421 and a second convex portion 422 arranged at intervals, the sliding portion 312 includes a first slider 3121 and a second slider 3122 arranged at intervals, the first gap 313 is used to avoid the up and down movement of the first convex portion 421 relative to the opening portion 31, and the second gap 314 between the first slider 3121 and the second slider 3122 is used to avoid the up and down movement of the second convex portion 422 relative to the opening portion 31. Therefore, through the mutual cooperation between the first convex portion 421 and the corresponding first slider 3121, and the mutual cooperation between the second convex portion 422 and the second slider 3122, the stability and firmness of the connection between the cover portion 4 and the fixing portion 3 are greatly enhanced.

[0060] Specifically, the first convex portion 421 may be located behind the second convex portion 422 along the first direction D1 , and the first sliding block 3121 may be located behind the second sliding block 3122 along the first direction D1 .

[0061] Furthermore, when the cover 4 is located at the closed position (e.g., the second position), the first slider 3121 is located between the wing 41 and the first convex portion 421, and the second slider 3122 is located between the wing 41 and the second convex portion 422. Thus, the cover 4 can be reliably maintained at the closed position, preventing the cover 4 from being accidentally opened.

[0062] Furthermore, along the first direction D1, the length of the second gap 314 is not less than the length of the first convex portion 421, and the length of the first gap 313 is not less than the length of the second convex portion 422. Thus, it is ensured that the first convex portion 421 and the second convex portion 422 have enough space to move during the movement, so that the cover 4 will not be hindered during the up and down movement, thereby improving the convenience of operation.

[0063] Continue to refer Figure 4 The surface of the protrusion 42 facing the wing 41 is provided with a guide surface 420, and the guide surface 420 extends obliquely in a direction away from the wing 41, and at least a portion of the sliding portion 312 moves along the guide surface 420 to between the wing 41 and the protrusion 42. Thus, the guide surface 420 provided on the protrusion 42 enables at least a portion of the sliding portion 312 to smoothly move along the guide surface 420 to between the wing 41 and the protrusion 42, which helps the cover 4 to smoothly close the opening 31, avoids collision between the protrusion 42 and the sliding portion 312 when disassembling the cover 4, and thus prolongs the service life of the components.

[0064] In a non-limiting embodiment, the guide surface 420 may include a first guide surface 4201 and a second guide surface 4202 , wherein the first guide surface 4201 is formed on the first protrusion 421 , and the second guide surface 4202 is formed on the second protrusion 422 .

[0065] In this scenario, along the first direction D1, the first protrusion 421 may include a first end 4211 and a second end 4212 opposite to each other, wherein the second end 4212 is located in front of the first end 4211. Further, along the second direction D2, the distance between the first end 4211 and the wing 41 is smaller than the distance between the second end 4212 and the wing 41. Further, the first guide surface 4201 is formed between the second end 4212 and the first end 4211. Thus, the first slider 3121 can enter the track between the first protrusion 421 and the wing 41 more smoothly along the guide surface 420.

[0066] Similarly, the second protrusion 422 may include a third end 4221 and a fourth end 4222 opposite to each other, wherein the fourth end 4222 is located in front of the third end 4221. Further, along the second direction D2, the distance between the third end 4221 and the wing 41 is smaller than the distance between the fourth end 4222 and the wing 41. Further, the second guide surface 4202 is formed between the fourth end 4222 and the third end 4221. Thus, the second slider 3122 can enter the track between the second protrusion 422 and the wing 41 more smoothly along the guide surface 420.

[0067] In some embodiments, when the cover 4 moves to the first position, the cover 4 can enter the opening 31 in an oblique manner. In this process, at least a portion of the first slider 3121 can slide into the track formed between the wing 41 and the first protrusion 421 along the first guide surface 4201. Similarly, at least a portion of the second slider 3122 can slide into the track formed between the wing 41 and the second protrusion 422 along the second guide surface 4202. In other words, when the cover 4 is located at the first position, along the second direction D2, at least a portion of the first slider 3121 is located between the wing 41 and the first protrusion 421, and at least a portion of the second slider 3122 is located between the wing 41 and the second protrusion 422.

[0068] Continue to refer Figure 4 The cover 4 includes: an upper panel 43, the shape of which is adapted to the shape of the opening 31; a pair of side panels 44, which extend from the upper panel 43 toward the impeller 1, respectively; the wing 41 is formed by the portion of at least one side of the upper panel 43 that exceeds the corresponding side panel 44, and the protrusion 42 protrudes outward from the side panel 44. Therefore, the shape of the upper panel 43 is adapted to the shape of the opening 31 to ensure a good closing effect, and the arrangement of the side panel 44, the wing 41 and the protrusion 42 enhances the structural strength and stability of the cover 4. Furthermore, the wing 41 is formed by the portion of at least one side of the upper panel 43 that exceeds the corresponding side panel 44. This design not only simplifies the production process, but also makes the appearance of the cover 4 more concise and beautiful.

[0069] In some non-limiting embodiments, the upper panel 43 may be provided with a plurality of groove structures 431, which are formed on the upper surface of the upper panel 43 along the second direction D2. Thus, when the worker pushes the cover 4 from the first position to the second position, the plurality of groove structures 431 can increase the friction between the hand and the upper panel 43 to avoid slipping.

[0070] Continue to refer Figure 4 , along the first direction D1, the cover 4 sequentially includes a tail portion 46 and a main body portion 45, the wing portion 41 and the protrusion portion 42 are arranged on the main body portion 45, and the tail portion 46 can be bent relative to the main body portion 45 in a direction away from the fixing portion 3 to form a handle portion. Thus, the tail portion 46 can be bent relative to the main body portion 45 to form a handle portion, which is convenient for users or maintenance personnel to grasp and operate the cover 4 to move to open and close the opening portion 31.

[0071] In a typical application scenario, when the cover 4 is in the first position, the tail 46 can be bent in the opposite direction of the second direction D2 to form a handle. In this scenario, the cover 4 can be moved from the first position to the second position by pushing the handle or directly pushing the main body 45.

[0072] Furthermore, the tail portion 46 and the main body portion 45 together form an upper panel 43 of the cover portion 4 .

[0073] In some non-limiting embodiments, the opening shape of the opening portion 31 may be substantially consistent with the shape of the upper panel 43. Thus, when the cover 4 is located at the second position, the tail portion 46 contacts the first end wall 3101 to limit the cover 4 from moving relative to the fixing portion 3 in the opposite direction of the first direction D1. When the cover 4 needs to be removed, the tail portion 46 is lifted, and the cover 4 can be easily pulled out in the opposite direction of the first direction D1.

[0074] In some non-limiting embodiments, the main body 45 is made of plastic material, thereby ensuring the structural strength of the cover 4.

[0075] In some non-limiting embodiments, the tail portion 46 is made of elastic material. Thus, the tail portion 46 can be easily bent to form a handle portion, which is convenient for users or maintenance personnel to operate.

[0076] In some non-limiting embodiments, the tail portion 46 and the main body portion 45 are movably connected. Thus, the movably connected tail portion 46 and the main body portion 45 can increase the structural flexibility of the cover portion 4.

[0077] In some non-limiting embodiments, the tail portion 46 and the main body portion 45 are integrally formed, and the cover portion 4 is made of an elastic material, thereby enhancing the structural integrity, practicality and durability of the cover portion 4.

[0078] In some non-limiting embodiments, the tail portion 46 and the main body portion 45 are insert-molded or overmolded. Thus, the main body portion 45 and the tail portion 46 can be flexibly selected from respective suitable materials according to actual needs.

[0079] Continue to refer Figure 3 The fan assembly 100 further includes a stop structure, wherein the stop structure 5 is disposed on the end wall 310 of the opening 31 along the first direction D1 to limit the maximum displacement of the cover 4 along the first direction D1. Thus, the setting of the stop structure 5 limits the maximum displacement of the cover 4 along the first direction D1, thereby preventing the cover 4 from being over-closed and hitting the components such as the wiring harness 7 in front of the push-in direction (e.g., the first direction D1), causing structural damage.

[0080] In some embodiments, reference Figure 2The fan assembly 100 further includes a sealing portion 6, which is fixed to the surface of the fixing portion 3 facing away from the impeller 1 and at least covers the gap between the cover portion 4 and the opening portion 31. Thus, the setting of the sealing portion 6 covers the gap between the cover portion 4 and the opening portion 31, enhances the dustproof and waterproof performance of the fan assembly 100, and protects the circuit module 2 from external damage. The sealing portion 6 can be, for example, a sealing sticker, which is attached to the upper side of the cover portion 4 and the opening portion 31 in the second direction D2 to close the gap between the cover portion 4 and the opening portion 31.

[0081] In a typical application scenario, refer to Figure 5 , the assembly process of the cover 4 may include the following steps.

[0082] First, the cover 4 is moved to above the opening 31 along the second direction D2 , and then gradually moved in the second direction D2 to a position close to the opening 31 .

[0083] Then, after aligning the first protrusion 421 with the first gap 313 and the second protrusion 422 with the second gap 314 respectively, the cover 4 enters the opening 31 along the second direction D2 to the first position. In this process, the first protrusion 421 passes through the first gap 313 and the second protrusion 422 passes through the second gap 314.

[0084] Furthermore, the cover 4 is pushed along the first direction D1 to move from the first position to the second position. At this time, along the first direction D1, the two ends of the cover 4 are respectively in contact with the first end wall 3101 and the stop structure 5; along the second direction D2, the sliding portion 312 is located between the wing portion 41 and the protrusion 42.

[0085] Thus, the cover portion 4 can be firmly connected to the fixing portion 3 and close the opening 31 .

[0086] In another typical application scenario, the disassembly process of the cover 4 may include the following steps.

[0087] First, the user or maintenance personnel can lift or hook the tail portion 46 with their hands or a tool (such as a hook-shaped tool) so that the tail portion 46 can be bent in the opposite direction of the second direction D2 to form a handle portion.

[0088] Then, the cover 4 is gradually pulled from the second position to the first position along the opposite direction of the first direction D1 by pulling the handle. At this time, the first protrusion 421 is aligned with the first gap 313, and the second protrusion 422 is aligned with the second gap 314.

[0089] Furthermore, the cover 4 is pulled up in the opposite direction of the second direction D2 to separate the cover 4 from the opening 31. In this process, the first protrusion 421 passes through the first gap 313 and the second protrusion 422 passes through the second gap 314 in the opposite direction of the second direction D2.

[0090] Therefore, the cover 4 can be easily disassembled to open the opening 31, which is convenient for inspection and maintenance of the internal structure of the fan assembly 100. Figure 5 The installation process of the cover 4 is only exemplified. For the structures and functions of other components of the fan assembly 100, reference can be made to the above description. Figures 2 to 4 The relevant description is not repeated here.

[0091] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even when only a single embodiment is described with respect to specific features. The feature examples provided in this disclosure are intended to be illustrative rather than limiting, unless otherwise stated. In specific implementations, the technical features of one or more dependent claims may be combined with the technical features of the independent claims, and the technical features from the corresponding independent claims may be combined in any appropriate manner rather than just by the specific combinations listed in the claims.

[0092] The relational terms appearing in the embodiments of the present application, such as first, second, etc., are only used to distinguish an entity or operation from another entity or operation, and do not require or imply any actual relationship or order between these entities or operations. In addition, the words "include", "have" and "comprise" and other similar forms are intended to be equivalent in meaning, and are open-ended, and one or more items behind any of these words are not meant to be an exhaustive list of such one or more items, or mean to be limited to one or more items listed. In the accompanying drawings and the specification, exemplary embodiments have been disclosed. However, many changes and modifications can be made to these embodiments. Therefore, although specific terms have been adopted, they are only used in a general and descriptive sense, not for the purpose of limitation.

[0093] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. A fan assembly, comprising: Impeller (1); A circuit module (2) for controlling the operation of the impeller (1); a fixing portion (3), the impeller (1) being rotatably connected to the fixing portion (3), the fixing portion (3) being provided with an opening portion (31), the opening portion (31) at least partially exposing the circuit module (2); A cover portion (4), used for opening or closing the opening portion (31); Characterized in that the fan assembly also includes: The wing portion (41) and the protrusion portion (42) are arranged opposite to each other on at least one side of the cover portion (4); a sliding portion (312) disposed on at least one side wall (311) forming the opening portion (31), wherein when the cover portion (4) is located at a closed position closing the opening portion (31), the sliding portion (312) is at least partially located between the wing portion (41) and the protrusion (42) in the up-down direction; and A first gap (313) is provided between the sliding portion (312) and the end wall (310) forming the opening portion (31) so as to prevent the protrusion (42) from moving up and down relative to the opening portion (31) when the cover portion (4) opens or closes the opening portion (31).

2. The fan assembly according to claim 1, characterized in that: The protrusion (42) can enter or leave the opening (31) from the first gap (313).

3. The fan assembly according to claim 1, characterized in that: The protrusion (42) includes a first convex portion (421) and a second convex portion (422) arranged at intervals, the sliding portion (312) includes a first slider (3121) and a second slider (3122) arranged at intervals, the first gap (313) is used to avoid the up and down movement of the first convex portion (421) relative to the opening portion (31), and the second gap (314) between the first slider (3121) and the second slider (3122) is used to avoid the up and down movement of the second convex portion (422) relative to the opening portion (31).

4. The fan assembly according to claim 3, characterized in that: When the cover (4) is located at the closed position, the first slider (3121) is located between the wing (41) and the first convex portion (421), and the second slider (3122) is located between the wing (41) and the second convex portion (422).

5. The fan assembly according to claim 3, characterized in that: The length of the second gap (314) is not less than the length of the first protrusion (421), and the length of the first gap (313) is not less than the length of the second protrusion (422).

6. The fan assembly according to claim 1, characterized in that The protrusion (42) is provided with a guide surface (420) on the surface facing the wing (41), and the guide surface (420) extends obliquely in a direction away from the wing (41), and at least a portion of the sliding portion (312) moves along the guide surface (420) to between the wing (41) and the protrusion (42).

7. The fan assembly according to claim 1, characterized in that The cover (4) comprises: An upper panel (43), the shape of the upper panel (43) being adapted to the shape of the opening (31); a pair of side panels (44), respectively extending from the upper panel (43) toward the impeller (1); the wing portion (41) being formed by a portion of at least one side of the upper panel (43) extending beyond the corresponding side panel (44); and the protrusion (42) protruding outward from the side panel (44).

8. The fan assembly according to claim 1, characterized in that Along the first direction (D1), the cover portion (4) comprises a tail portion (46) and a main body portion (45) in sequence, the wing portion (41) and the protrusion portion (42) are arranged on the main body portion (45), and the tail portion (46) can be bent relative to the main body portion (45) in a direction away from the fixing portion (3) to form a handle portion.

9. The fan assembly according to claim 8, characterized in that: The main body (45) is made of plastic material, and / or The tail portion (46) is made of elastic material, and / or The tail portion (46) and the main body portion (45) are movably connected, and / or The tail portion (46) and the main body portion (45) are integrally formed, the cover portion (4) is made of an elastic material, and / or The tail portion (46) and the main body portion (45) are insert-molded or secondary-molded.

10. The fan assembly according to claim 1, characterized in that It also comprises a stop structure (5), wherein the stop structure (5) is arranged on the end wall of the opening portion (31) along the first direction (D1) to limit the maximum displacement of the cover portion (4) along the first direction (D1).

11. The fan assembly according to claim 1, characterized in that It also comprises a sealing portion (6) which is fixed to the surface of the fixing portion (3) facing away from the impeller (1) and covers at least a gap between the cover portion (4) and the opening portion (31).

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