electric fan

Abstract

To provide an electric fan in which the electric fan head can be removed as a whole from a drive assembly, improving the convenience of removing the electric fan head and thus improving the convenience and efficiency of cleaning the electric fan. [Solution] The electric fan according to the present invention comprises a drive assembly 100, a fan head 200, and a locking mechanism 300. The fan head is detachably connected to the drive assembly, and a movable locking mechanism is provided on the fan head, which can be selected to be in a locked or unlocked state. When the fan head is connected to the drive assembly and the locking mechanism is in the locked state, the fan head can be interconnected and fixed to the drive assembly. When the locking mechanism is in the unlocked state, the fan head can be separated from the drive assembly.

Description

[Technical Field]

[0001] The present invention relates to the technical field of household appliances, and in particular to electric fans. [Background technology]

[0002] Electric fans are widely used in daily life and industry. Their working principle is that the blades rotate under the drive of an electric motor, accelerating the flow of surrounding air, thereby generating wind force and achieving the purpose of cooling or circulating air.

[0003] The electric fan generally includes a fan head and a drive assembly that are connected to each other, and the fan head mainly includes a front guard, a rear guard, and a blower blade. When cleaning an existing electric fan, it is necessary to remove the front guard, the rear guard, and the blower blade one by one from the drive assembly, which makes the removal process more complicated. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention aims to propose a fan that solves the problem that when cleaning an existing fan, the front guard, rear guard, and blower blades must be removed one by one from the drive assembly, making the removal process more complicated. [Means for solving the problem]

[0005] This invention proposes an electric fan; a drive assembly; The fan head comprises a fan head detachably connected to the drive assembly; and a movable locking mechanism provided on the fan head, the locking mechanism being selectably in a locked state or an unlocked state, such that the fan head is connected to the drive assembly and, when the locking mechanism is in the locked state, the fan head can be fixedly connected to the drive assembly; and, when the locking mechanism is in the unlocked state, the fan head can be separated from the drive assembly.

[0006] As a further solution, the locking mechanism further comprises a locking member, the locking member being movably mounted on the fan head and having a locking groove in the drive assembly, the fan head being connected to the drive assembly, and when the locking mechanism is in the locked state, a portion of the locking member is located within the locking groove, and when the locking mechanism is in the released state, the locking member is located outside the locking groove, and the fan head can be separated from the drive assembly.

[0007] As a further solution, the locking mechanism further comprises an elastic member and a connecting member; the connecting member is fixed to the fan head, the locking member is attached between the connecting member and the fan head, and the elastic member is attached between the connecting member and the locking member.

[0008] As a further solution, the locking groove is located on the outside of the drive assembly, and the locking groove is fitted with the locking member.

[0009] As a further solution, the fan head has a fan housing, a blower blade, and a rotating member, the blower blade is located in the fan housing, the rotating member is rotatably connected to the fan housing via a bearing, and the rotating member penetrates the blower blade and the fan housing, thereby fixing the blower blade relative to the rotating member;

[0010] When the drive assembly has a drive housing and an electric motor, the electric motor is located within the drive housing, the electric motor has a rotating shaft, the fan housing is detachably connected to the drive housing, the rotating shaft is detachably connected to the rotating member, and the rotating shaft is connected to the rotating member, the rotating shaft can rotate the rotating member.

[0011] As a further solution, the rotating member has a first rotating end and a second rotating end connected to each other, the first rotating end is rotatably connected to the fan housing via the bearing, the first rotating end penetrates the blower blade and the fan housing, thereby fixing the blower blade relatively to the first rotating end, and a notch groove is provided in the second rotating end;

[0012] An axle pin is provided at the end of the rotating shaft, and when the axle pin penetrates the rotating shaft along the radial direction of the rotating shaft and connects the rotating shaft to the driving member, the axle pin is positioned in the notched groove of the second rotating end, thereby causing the rotating shaft to rotate the driving member.

[0013] As a further solution, the fan head further comprises a position limiting member, the position limiting member is connected to the rotating member, and the blower blade is located between the position limiting member and the bearing.

[0014] As a further solution, the position limiting member is placed on the end of the rotating member and is screwed onto the rotating member.

[0015] As a further solution, a mounting through hole is provided in the blower impeller, the rotating member passes through the mounting through hole, the rotating member fits into the mounting through hole, and both the cross section of the mounting through hole and the cross section of the rotating member are non-circular.

[0016] As a further solution, the fan housing has a front guard and a rear guard, the front guard is detachably connected to the rear guard, and the rotating member is rotatably connected to the rear guard via a bearing and passes through the rear guard. [Effects of the Invention]

[0017] The beneficial effects of the present invention are as follows: The present invention differs from current technology in that the fan head is detachably connected to the drive assembly, allowing the fan head to be removed as a whole from the drive assembly, thereby avoiding the complicated process of removing each component included in the fan head from the drive assembly one by one. Second, the present invention is equipped with a movable locking mechanism on the fan head. Because the locking mechanism can be selected to be locked or unlocked, when the drive assembly is assembled with the fan head, the fan head is connected and fixed to the drive assembly. Locking the locking mechanism makes the connection between the fan head and the drive assembly more stable, thereby improving the safety of the fan and reducing safety risks caused by loose or detached components. When the fan needs to be removed, the fan head can be separated from the drive assembly simply by moving the locking mechanism to the unlocked state. This means that the fan head can be removed as a whole from the drive assembly in a single step, improving the convenience of fan head removal and thereby improving the convenience and efficiency of fan cleaning. [Brief explanation of the drawings]

[0018] In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required for the description of the embodiments or the prior art are briefly introduced below. It goes without saying that those skilled in the art can further obtain other accompanying drawings from these accompanying drawings without any creative effort.

[0019] [Figure 1] FIG. 1 is a schematic assembly diagram of an embodiment of an electric fan according to the present invention. [Figure 2] FIG. 2 is a partial cross-sectional view of an embodiment of the electric fan according to the present invention. [Figure 3] FIG. 3 is an exploded view of a portion of an embodiment of the electric fan according to the present invention. [Figure 4] FIG. 4 is a structural schematic diagram of an embodiment of the blower impeller according to the present invention. [Figure 5] FIG. 5 is a structural schematic diagram of one embodiment of a rotating member according to the present invention. [Figure 6] FIG. 6 is a structural schematic diagram of one embodiment of the rear guard according to the present invention. [Figure 7] FIG. 7 is a structural schematic diagram of one embodiment of the drive assembly and locking mechanism according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] In order to make the purpose, technical means and advantages of the embodiments of the present invention clearer, the technical means of the embodiments of the present invention will be described below clearly and completely with reference to the drawings in the embodiments of the present invention, and it goes without saying that the described embodiments are not all embodiments but only some embodiments of the present invention. Any other embodiments that a person skilled in the art can obtain based on the embodiments of the present invention without any creative effort shall all be within the scope of protection of the present invention.

[0021] The following disclosure provides various embodiments or examples for achieving different configurations of the present invention. In the following examples, only specific components and configurations are described to simplify the disclosure of the present invention. Of course, these examples are merely illustrative and do not limit the present invention. Moreover, the present invention may repeat numerical and / or letter designations in different examples. Such repetition is for the purpose of simplicity and clarity and does not itself indicate a relationship between the various examples and / or configurations mentioned.

[0022] Electric fans are widely used in daily life and industrial production. Their working principle is that the blades rotate under the drive of an electric motor, accelerating the surrounding air into a flow and generating wind power, thereby achieving the purpose of cooling or circulating the air.

[0023] The electric fan generally includes a fan head and a drive assembly that are connected to each other, and the fan head mainly includes a front guard, a rear guard, and a blower blade. When cleaning an existing electric fan, it is necessary to remove the front guard, the rear guard, and the blower blade one by one from the drive assembly, which makes the removal process more complicated.

[0024] Therefore, this invention proposes a fan to solve the problem that cleaning existing fans requires removing the front guard, rear guard, and fan blades one by one from the drive assembly, making removal more complicated. It improves the convenience of removing the fan head, thereby improving the convenience and efficiency of cleaning the fan. The technical means are as follows.

[0025] As shown in FIGS. 1-7, the electric fan 10 according to the present invention comprises a drive assembly 100, a fan head 200, and a locking mechanism 300.

[0026] The fan head 200 is detachably connected to the drive assembly 100, and is provided with a movable locking mechanism 300 that can be selectively set to a locked or unlocked state. When the fan head 200 is connected to the drive assembly 100 and the locking mechanism 300 is in the locked state, the fan head 200 can be interconnected and fixed to the drive assembly 100. When the locking mechanism 300 is in the unlocked state, the fan head 200 can be separated from the drive assembly 100.

[0027] In the present invention, the fan head 200 is detachably connected to the drive assembly 100, so that the fan head 200 can be removed as a whole from the drive assembly 100, thereby avoiding the complicated process of removing each component of the fan head 200 from the drive assembly 100 one by one. Next, a movable locking mechanism 300 is installed on the fan head 200, and the locking mechanism 300 can be selected to be in a locked or unlocked state. Therefore, when assembling the drive assembly 100 with the fan head 200, the locking mechanism 300 can be moved to lock the locking mechanism 300, thereby making the connection between the fan head 200 and the drive assembly 100 more stable, thereby improving the safety of use of the fan 10 and helping to reduce safety risks caused by loose or detached components. When it is necessary to remove the electric fan 10, the electric fan head 200 can be separated from the drive assembly 100 simply by moving the locking mechanism 300 to the unlocked state. In other words, the electric fan head 200 can be removed entirely from the drive assembly 100 in a single step, improving the convenience of removing the electric fan head 200 and thereby improving the convenience and efficiency of cleaning the electric fan 10.

[0028] In some embodiments, the fan head 200 can be removably connected to the drive assembly 100 by engaging it with fasteners, screws, a removable connection, or the like.

[0029] The following description will be given taking the insertion / removal connection between the fan head 200 and the driving assembly 100 as an example.

[0030] For example, during installation, the fan head 200 can be aligned with the connection port of the drive assembly 100. The connection end of the fan head 200 is inserted into the corresponding connection port of the drive assembly 100 until they are completely fitted together. At this time, the locking mechanism 300 can be manually adjusted to a locked state. For example, the locking mechanism 300 can be snapped, twisted, or otherwise used to lock the connection between the fan head 200 and the drive assembly 100.

[0031] In the case of removal, in other words, when it is necessary to remove the fan head 200, first adjust the locking mechanism 300 to the unlocked state, and then gently pull the fan head 200 to remove it from the connection port of the drive assembly 100, thereby allowing the fan head to be removed as a whole from the drive assembly.

[0032] In this manner, the plug-and-play method allows for quick connection and disconnection between the drive assembly 100 and the fan head 200, simplifying the assembly and disassembly process.

[0033] In some embodiments, the locking mechanism 300 is attached to the drive assembly 100 or fan head 200 in a rotating, sliding, moving, or other manner.

[0034] In some embodiments, there may be a plurality of locking mechanisms 300 , each with a locking member 310 movably attached between a connecting member 330 and the rear guard 212 .

[0035] The number of locking grooves 110 can be multiple, and the multiple locking grooves 110 are arranged on the outside of the drive housing, and each locking groove 110 is connected to a locking member 310 of the locking mechanism 300 in a one-to-one correspondence, and can be fitted together.

[0036] In this way, by arranging a plurality of interlocking locking grooves 110 and locking members 310, the stability of the connection between the drive assembly 100 and the fan head 200 can be improved.

[0037] 2-3 , in some embodiments, the locking mechanism 300 further includes a locking member 310, which is movably mounted on the fan head 200, and the drive assembly 100 is provided with a locking groove 110, and when the fan head 200 is connected to the drive assembly 100 and the locking mechanism 300 is in a locked state, a portion of the locking member 310 is located within the locking groove 110. When the locking mechanism 300 is in an unlocked state, the locking member 310 is located outside the locking groove 110, and the fan head 200 can be separated from the drive assembly 100.

[0038] Because the locking member 310 is movably mounted on the fan head 200, when the fan head 200 is connected to the drive assembly 100, the locking member 310 is moved toward the locking groove 110, so that a portion of the locking member 310 is located within and inserted into the locking groove 110, thereby ensuring a stable connection between the fan head 200 and the drive assembly 100. When it is necessary to remove the fan head 200 from the drive assembly 100, the locking member 310 is moved in the opposite direction of the locking groove 110, so that the locking member 310 is completely removed from the locking groove 110, and the fan head 200 is then moved in the opposite direction of the locking groove 110 and separated from the drive assembly 100, which improves the convenience of removing the fan head 200.

[0039] As shown in FIGS. 2 and 7, in some embodiments, the locking mechanism 300 further comprises an elastic member 320 and a connecting member 330; the connecting member 330 is fixed to the fan head 200, the locking member 310 is attached between the connecting member 330 and the fan head 200, and the elastic member 320 is attached between the connecting member 330 and the locking member 310.

[0040] In some embodiments, the connecting member 330 may be secured to the fan head 200 in a manner such as with a screw.

[0041] In some embodiments, the resilient member 320 can be a spring or other material or component with resilient properties.

[0042] For example, when the locking member 310 is moved in the opposite direction to the locking groove 110, compression is applied to the elastic member 320, causing the locking member 310 to disengage from the locking groove 110, and thus the fan head 200 can be operatively separated from the drive assembly 100. When the locking member 310 is released, the locking member 310 is restored under the action of the elastic member 320, and the locking mechanism 300 is in the locked state, with a portion of the locking member 310 positioned within the locking groove 110 and connecting with the locking groove 110.

[0043] By arranging the elastic member 320 in this manner, the user can simply move the locking member 310 to the unlocked state and then release their hand, which will cause the locking member 310 to automatically return to the locked state under the action of the elastic member 320, thereby eliminating the need to manually reset the locking member 310, simplifying the operation of the locking member 310 and making the assembly and disassembly of the fan 10 easier and faster.

[0044] Furthermore, the elastic member 320 ensures that the position of the locking member 310 is stable in the locked state, reducing the possibility of accidental unlocking, and thus reducing the risk of accidental unlocking due to vibration or collision during use of the fan 10, thereby improving the safety of use of the fan 10.

[0045] As shown in FIGS. 2 and 7, in some embodiments, the locking groove 110 is located on the exterior of the drive assembly 100 and the locking groove 110 mates with a locking member 310 .

[0046] The locking groove 110 may extend around the circumference of the drive assembly 100 .

[0047] The shape and size of the locking member 310 are adapted to fit into the locking groove 110, and the locking member 310 positioned in the locking groove 110 extends along the outer periphery of the drive assembly 100. In this way, a portion of the locking member 310 can be inserted into the locking groove 110 and adapted to fit therewith, thereby achieving the locked state.

[0048] In addition, the locking groove 110 and the locking member 310 extend along the outer periphery of the drive assembly 100, thereby increasing the contact area between the locking member 310 and the drive assembly 100 and improving the stability of the lock.

[0049] As shown in Figures 2-3, in some embodiments, the fan head 200 has a fan housing 210, blower blades 220, and a rotating member 230, where the blower blades 220 are located within the fan housing 210, the rotating member 230 is rotatably connected to the fan housing 210 via a bearing 233, and the rotating member 230 penetrates the blower blades 220 and the fan housing 210, thereby making the blower blades 220 fixed relative to the rotating member 230.

[0050] In other words, the blower impeller 220 rotates with the rotating member 230. When the rotating member 230 rotates, the blower impeller 220 rotates accordingly; when the rotating member 230 stops, the blower impeller 220 stops.

[0051] The drive assembly 100 has a drive housing 120 and an electric motor 130, the electric motor 130 is located in the drive housing 120, the electric motor 130 has a rotating shaft 131, the fan housing 210 is detachably connected to the drive housing 120, the rotating shaft 131 is detachably connected to a rotating member 230, and when the rotating shaft 131 is connected to the rotating member 230, the rotating shaft 131 can rotate the rotating member 230 to rotate the fan blades 220.

[0052] Rotating member 230 is rotatably connected to fan housing 210 via bearing 233, and rotating member 230 passes through blower blades 220. In other words, blower blades 220 are fixed onto rotating member 230 of fan housing 210, and do not need to be directly coupled with rotating shaft 131 of motor 130. Therefore, when fan housing 210 is removed from fan housing 210, rotating member 230 connected to fan housing 210 is also separated from rotating shaft 131, and blower blades 220 fixed to rotating member 230 can also be removed at the same time.

[0053] The fan housing 210 may be connected to the drive housing 120 by fasteners, screws, inserting / removing, or other methods, thereby realizing a detachable connection with the drive housing 120.

[0054] The rotary shaft 131 is removably connected to the rotary member 230 .

[0055] As shown in Figures 2-3, in some embodiments, the fan housing 210 has a front guard 211 and a rear guard 212, the front guard 211 is detachably connected to the rear guard 212, and the rotating member 230 is rotatably connected to the rear guard 212 via a bearing 233 and passes through the rear guard 212.

[0056] The following description will be given taking as examples the removable connection between the rear guard 212 and the drive housing 120, and the removable connection between the rotating shaft 13 and the rotating member 230.

[0057] For example, during assembly, the rotating shaft 131 can be aligned with and inserted into the rotating member 230, then the rear guard 212 of the fan housing 210 is aligned with the connection port of the drive assembly 100 until both are completely in contact, and then the locking member 310 connected to the fan head 200 is moved, so that part of the locking member 310 is positioned in the locking groove 110, thereby placing the locking mechanism 300 in a locked state.

[0058] When removing the fan head 200, the locking member 310 can be pulled in the opposite direction (i.e., away from the locking groove 110) to adjust the locking mechanism 300 to the unlocked state, and then the rear guard 212 can be pulled and removed from the connection port of the drive assembly 100, and at the same time the rotating shaft 131 can be pulled out from the rotating member 230, thereby removing the entire fan head 200 from the drive assembly 100.

[0059] In some embodiments, the front guard 211 may be connected to the drive housing 120 by fasteners, screws, removable components, or the like, allowing the front guard 211 and rear guard 212 to be individually removed for cleaning.

[0060] As shown in Figures 2 and 5, in some embodiments, the rotating member 230 has a first rotating end 231 and a second rotating end 232 connected to each other, the first rotating end 231 is rotatably connected to the fan housing 210 via a bearing 233, the first rotating end 231 penetrates the fan blade 220 and the fan housing 210, thereby fixing the fan blade 220 relative to the first rotating end 231, and the second rotating end 232 has a notch 2321.

[0061] A pin 400 is provided at the end of the rotating shaft 131, and the pin 400 penetrates the rotating shaft 131 along the radial direction of the rotating shaft 131. When the rotating shaft 131 is connected to the driving member 230, the pin 400 is located in the notch groove 2321 of the second rotating end 232, thereby causing the rotating shaft 131 to rotate the driving member 230.

[0062] By simply gently pulling the rotating shaft 131 in the opposite direction to the notched groove 2321, the shaft pin 400 comes out of the notched groove 2321. In other words, the shaft pin 400 can be easily inserted and removed, eliminating the need for an auxiliary tool and greatly simplifying the removal process.

[0063] As shown in FIG. 2-3, in some embodiments, the fan head 200 further includes a position limiting member 240, which is connected to the rotating member 230, and the fan blades 220 are located between the position limiting member 240 and the bearing 233.

[0064] By covering the end of the rotating member 230 with the position limiting member 240, it is possible to prevent the blower blade 220 from slipping out of the rotating member 230.

[0065] In some embodiments, a position limiting member 240 is placed over the end of the rotating member 230 and threadedly engages with the rotating member 230 .

[0066] By using the screw connection method, the connection between the position limiting member 240 and the rotating member 230 is more stable, and thus the blower blade 220 is prevented from slipping out of the rotating member 230 .

[0067] As shown in Figures 3-4, in some embodiments, the blower impeller 220 has a mounting through-hole 221, the rotating member 230 passes through the mounting through-hole 221, the rotating member 230 fits into the mounting through-hole 221, and the cross-sections of the mounting through-hole and the rotating member 230 are both non-circular.

[0068] The cross section of the mounting through-hole and the cross section of the rotation member 230 may be oval, polygonal, or other shapes.

[0069] By providing a non-circular cross section, slippage of the rotating member 230 can be avoided during rotation, which increases the safety of use of the fan 10 and also reduces wear caused by slippage of the rotating member 230, thereby extending the life of the fan 10.

[0070] The above-described device embodiments are merely suggestive, and elements described as a single component may or may not be physically separable. Elements shown as components may or may not be physically separable, i.e., they may be located in one place or distributed across multiple network units. In practice, some or all of these modules may be selected to achieve the objectives of the present embodiment, as desired.

[0071] It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a," "an," and "said" have their plural meanings unless the context clearly indicates otherwise. The terms "comprise," "contain," "include," and "comprise" have an inclusive meaning and indicate the presence of stated features, steps, operations, components, and / or elements, but do not exclude the presence or addition of one or more other features, steps, operations, components, elements, and / or combinations thereof.

[0072] The above is merely a specific embodiment of the present invention, sufficient to enable one skilled in the art to understand or realize the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments set forth herein, but is to be accorded the widest scope consistent with the principles and novel features of the present invention. [Explanation of symbols]

[0073] 10 - electric fan; 100 - drive assembly; 110 - locking groove; 120-drive housing; 130-Electric motor; 131 - axis of rotation; 200-Fan head; 210-Fan housing; 211-Front guard; 212-rear guard; 220 - blower blades; 221 - mounting through-hole; 230 - rotating elements; 231-First rotating end; 232-second rotating end; 2321 - notched groove; 233-bearings; 240-position limiting member; 300-locking mechanism; 310-locking member; 320 - Elastic members; 330-connecting members; 400-axis pin.

Claims

1. a drive assembly; a fan head detachably connected to the drive assembly; and a movable locking mechanism provided on the fan head, the locking mechanism being selectably in a locked state or an unlocked state, such that the fan head is connected to the drive assembly and, when the locking mechanism is in the locked state, the fan head can be fixedly connected to the drive assembly; and, when the locking mechanism is in the unlocked state, the fan head can be separated from the drive assembly. A fan characterized by:

2. the locking mechanism further comprises a locking member, the locking member being movably mounted on the fan head and having a locking groove in the drive assembly, the fan head being connected to the drive assembly, and when the locking mechanism is in the locked state, a portion of the locking member is located within the locking groove, and when the locking mechanism is in the released state, the locking member is located outside the locking groove, allowing the fan head to be separated from the drive assembly; 2. The electric fan according to claim 1 .

3. The locking mechanism further includes an elastic member and a connecting member; the connecting member is fixed to the fan head, the locking member is attached between the connecting member and the fan head, and the elastic member is attached between the connecting member and the locking member.

3. The electric fan according to claim 2.

4. 3. The electric fan according to claim 2, wherein the locking groove is located on the outside of the drive assembly, and the locking groove is fitted with the locking member.

5. The fan head has a fan housing, a blower blade, and a rotating member, the blower blade is located within the fan housing, the rotating member is rotatably connected to the fan housing via a bearing, and the rotating member penetrates the blower blade and the fan housing, thereby fixing the blower blade relative to the rotating member; the drive assembly includes a drive housing and an electric motor, the electric motor is located within the drive housing, the electric motor has a rotating shaft, the fan housing is detachably connected to the drive housing, the rotating shaft is detachably connected to the rotating member, and when the rotating shaft is connected to the rotating member, the rotating shaft can move the rotating member in rotation; 5. The electric fan according to claim 1, wherein the electric fan is a fan having a plurality of openings.

6. the rotating member has a first rotating end and a second rotating end connected to each other, the first rotating end is rotatably connected to the fan housing via the bearing, the first rotating end penetrates the fan blade and the fan housing, thereby fixing the fan blade relatively to the first rotating end, and the second rotating end is provided with a notched groove; a pin is provided at the end of the rotating shaft, and the pin penetrates the rotating shaft along the radial direction of the rotating shaft, and when the rotating shaft is connected to the driving member, the pin is positioned in the notched groove of the second rotating end, so that the rotating shaft rotates the driving member; 6. The electric fan according to claim 5.

7. The fan head further includes a position limiting member, the position limiting member is connected to the rotating member, and the blower blade is located between the position limiting member and the bearing.

6. The electric fan according to claim 5.

8. The electric fan according to claim 7, wherein the position limiting member is placed over an end of the rotating member and is screwed to the rotating member.

9. a mounting through hole is provided in the blower impeller, the rotating member passes through the mounting through hole, the rotating member is fitted into the mounting through hole, and both the cross section of the mounting through hole and the cross section of the rotating member are non-circular; 6. The electric fan according to claim 5.

10. The fan housing has a front guard and a rear guard, the front guard is detachably connected to the rear guard, and the rotating member is rotatably connected to the rear guard via a bearing and penetrates the rear guard.

6. The electric fan according to claim 5.

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