Circulating fan easy to disassemble

Abstract

The utility model discloses a circulating fan easy to disassemble, which is characterized in that the front end of an air duct body is internally connected with a ventilation cover disc in a spinning manner, a fan blade motor is provided with a motor rotating shaft, the motor rotating shaft is provided with an axial stopper, turbine fan blades form a shaft sleeve part, the shaft sleeve part is adaptively sleeved on the motor rotating shaft, and the front end part of the motor rotating shaft is in threaded connection with a gland; the shaft sleeve part is clamped between the gland and the axial blocking piece, the gland is arranged in the front portion of the air duct body, the oscillating base assembly comprises a fixed base plate and a movable cylindrical shell, a spherical concave face is formed on the top of the movable cylindrical shell, inserting openings are formed in the spherical concave face, supporting feet are arranged on the lower portion of the fan shell assembly, the supporting feet are connected with the corresponding inserting openings in an inserted mode, and the rear spherical cover shell is arranged in the spherical concave face in a matched mode. A receding notch used for being matched with the receding air duct body is formed in the front portion of the spherical concave face, and the receding notch forwards penetrates through the movable cylindrical shell. The circulating fan can be well kept clean, and the circulating fan is easy to disassemble and more convenient to clean.

Description

Technical Field

[0001] The utility model relates to the field of circulation fans, in particular to a circulation fan that is easy to disassemble. Background Art

[0002] At present, a circulation fan is provided with a turbine fan blade. When the turbine fan blade rotates at a high speed, it can generate a relatively concentrated airflow with a relatively long range. However, if too much dust adheres to the turbine fan blade, it will significantly affect the rotation speed of the turbine fan blade, and it will also cause poor dynamic balance of the turbine fan blade, resulting in obvious shaking of the circulation fan. Therefore, during the daily use of the circulation fan, it is best to keep it clean. The Chinese utility model patent with the publication number of CN220850098U discloses "a desktop circulation fan that is easy to clean": the lower part of its spherical shell assembly is recessed into the concave cavity of the swing base assembly, and the concave cavity is located inside the upper end of the cylindrical shell, avoiding the need to set an exposed fork structure, which is beneficial to setting a smaller gap between the upper end of the swing base assembly and the spherical shell assembly, preventing dust from easily accumulating between the spherical shell assembly and the swing base assembly, and also preventing the dust between the spherical shell assembly and the swing base assembly from being easily seen, making the circulation fan convenient to clean and capable of maintaining cleanliness well; however, the turbine fan blade of the above circulation fan is not convenient to disassemble and wash, which is not conducive to maintaining cleanliness during daily use, so it is necessary to make improvements. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a circulation fan that is easy to disassemble and is more convenient to clean.

[0004] The purpose of the utility model is achieved through the following technical solutions.

[0005] The disclosed circulation fan that is easy to disassemble of the utility model includes a fan shell assembly and a swing base assembly. A fan blade motor and a turbine fan blade are arranged inside the fan shell assembly. Among them, the fan shell assembly includes a rear spherical cover shell and a wind cylinder body. The rear end of the wind cylinder body is installed and connected to the front end of the rear spherical cover shell. The front end of the wind cylinder body is internally screwed and connected with a ventilation cover plate. The fan blade motor is provided with a motor rotating shaft, and an axial stop is arranged on the motor rotating shaft. The turbine fan blade is formed with a sleeve part, and the sleeve part is sleeved on the motor rotating shaft in a matching manner. The front end of the motor rotating shaft is screwed with a gland, and the sleeve part is clamped between the gland and the axial stop. The gland is arranged inside the front part of the wind cylinder body. The swing base assembly includes a fixed chassis and a movable cylindrical shell. The movable cylindrical shell is swingably arranged on the upper side of the fixed chassis. A spherical concave surface is formed at the top of the movable cylindrical shell, and a socket is formed on the spherical concave surface. A support leg is arranged at the lower part of the fan shell assembly, and the support leg is inserted into the corresponding socket. The rear spherical cover shell is adapted to be arranged inside the spherical concave surface. An avoidance notch for adapting to avoid the wind cylinder body is formed at the front part of the spherical concave surface, and the avoidance notch penetrates through the movable cylindrical shell forward.

[0006] Preferably, the gland comprises a handwheel part and a flange part. The front end of the flange part is integrally connected with the rear end of the handwheel part, and the rear surface of the flange part abuts against the front side of the bushing part.

[0007] Preferably, the ventilation hood disc is formed with an air outlet pipe part. The front end part of the turbine fan blade is arranged in the air outlet pipe part. A rotary button is formed on the outer wall of the air outlet pipe part. An inner flange is formed in the front end part of the air cylinder body. A rotary button notch for the rotary button to pass through is formed on the inner flange. The rotary button buckles the edge part of one end of the rotary button notch.

[0008] Preferably, an arc-shaped through groove is formed on the inner flange, and the ventilation hood disc is formed with a positioning insertion piece. The positioning insertion piece is inserted backward into the corresponding arc-shaped through groove.

[0009] Preferably, the ventilation hood disc is formed with radial grid bars, and the radial grid bars are evenly distributed circumferentially.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: By arranging that the front end of the air cylinder body is connected with the ventilation hood disc by internal rotation buckling, an axial stop piece is arranged on the motor rotating shaft, the turbine fan blade is formed with a bushing part, the bushing part is adaptively sleeved on the motor rotating shaft, the front end part of the motor rotating shaft is screwed with a gland, the bushing part is clamped between the gland and the axial stop piece, the gland is arranged in the front part of the air cylinder body, the swing head base assembly comprises a fixed chassis and a movable cylindrical shell, the movable cylindrical shell is swingably arranged on the upper side of the fixed chassis, a spherical concave surface is formed on the top of the movable cylindrical shell, a socket is formed on the spherical concave surface, the lower part of the fan shell assembly is provided with a support leg, the support leg is inserted into the corresponding socket, the rear spherical cover shell is adaptively arranged in the spherical concave surface, and an avoidance notch for adaptively avoiding the air cylinder body is formed in the front part of the spherical concave surface, and the avoidance notch penetrates through the movable cylindrical shell forward, so that the circulation fan of the present utility model can be kept clean better, the circulation fan of the present utility model is easy to disassemble and is more convenient to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front three-dimensional structural schematic diagram of the circulation fan of the present utility model.

[0012] Figure 2 It is a left-view sectional structural schematic diagram of the circulation fan of the present utility model.

[0013] Figure 3 It is a three-dimensional structural schematic diagram of the swing head base assembly of the present utility model.

[0014] Figure 4 It is a front-view structural schematic diagram of the swing head base assembly of the present utility model.

[0015] Figure 5Exploded schematic view of the circulation fan of the present utility model with the ventilation hood disc and the swing base assembly removed.

[0016] Figure 6 Exploded schematic view of the circulation fan of the present utility model with the swing base assembly removed.

[0017] Figure 7 Rear view three-dimensional structural schematic view of the air cylinder body and the ventilation hood disc combination of the present utility model.

[0018] Figure 8 Exploded schematic view of the circulation fan of the present utility model.

[0019] Label description: fan housing assembly 1; rear spherical housing 11; support feet 111; air cylinder body 12; inner flange 121; snap notch 1211; arc through groove 1212; turbine fan blade 13; bushing portion 130; central hole 1301; fan blade motor 14; motor rotating shaft 141; axial stop 1411; gland 15; handwheel portion 151; flange portion 152; ventilation hood disc 16; air outlet pipe portion 160; snap button 161; positioning insert 162; radial grid 163; swing base assembly 2; fixed chassis 21; movable cylindrical shell 22; socket 2201; spherical concave surface 2202; avoidance notch 2203. Detailed implementation manners

[0020] The present utility model will be further described below with reference to the accompanying drawings.

[0021] The detachable circulation fan of the present utility model, as Figure 1 and Figure 2 shown, includes a fan housing assembly 1 and a swing base assembly 2. A fan blade motor 14 and a turbine fan blade 13 are provided inside the fan housing assembly 1. The fan housing assembly 1 includes a rear spherical housing 11 and an air cylinder body 12. The rear end of the air cylinder body 12 is installed and connected to the front end of the rear spherical housing 11. In other words, the outer shape of the rear spherical housing 11 is in the shape of the rear half of a sphere. The rear spherical housing 11 includes a plurality of arc-shaped grid bars, so that the incoming air flow can pass between the above-mentioned arc-shaped grid bars. The rear end of the air cylinder body 12 can be connected to the front end of the rear spherical housing 11 by corresponding screws. The air cylinder body 12 is generally cylindrical. The outer diameter of the front end of the air cylinder body 12 is slightly smaller than the outer diameter of the rear end of the air cylinder body 12. The ventilation hood disc 16 is rotationally buckled and connected to the front end inside the air cylinder body 12. In other words, the air flow generated by the operation of the turbine fan blade 13 can be discharged forward through the ventilation hood disc 16. As Figure 2 and Figure 5 shown, the fan blade motor 14 is provided with a motor rotating shaft 141, and an axial stop 1411 is provided on the motor rotating shaft 141 (it should be noted that only Figure 2Axially draw the axial stop 1411 schematically. The turbine fan blade 13 is formed with a bushing portion 130. The blades of the turbine fan blade 13 are integrally and circumferentially connected to the outer periphery of the bushing portion 130. The bushing portion 130 is adaptively sleeved on the motor rotating shaft 141. A gland 15 is screwed to the front end of the motor rotating shaft 141. The bushing portion 130 is clamped between the gland 15 and the axial stop 1411. The gland 15 is arranged inside the front part of the air cylinder body 12. Thus, the gland 15 is located at the rear side of the ventilation hood disc 16. For example, the axial stop 1411 can be a circlip, that is, an annular groove for installing the circlip is formed on the motor rotating shaft 141. The motor rotating shaft 141 and the bushing portion 130 can be connected by a flat key, or the front part of the motor rotating shaft 141 is a D-shaped shaft structure. Accordingly, as Figure 5 shown, the bushing portion 130 is formed with a central hole 1301. The central hole 1301 can be a D-shaped hole, which can enable the circumferential relative positioning of the bushing portion 130 and the motor rotating shaft 141. When the fan motor 14 operates, the motor rotating shaft 141 can drive the turbine fan blade 13 to rotate. As Figure 3 and Figure 4 shown, the swing base assembly 2 includes a fixed chassis 21 and a movable cylindrical shell 22. The movable cylindrical shell 22 is swingably arranged on the upper side of the fixed chassis 21. In other words, the movable cylindrical shell 22 is rotatably connected to the fixed chassis 21 around the vertical axis. The fixed chassis 21 is used to contact the tabletop. More specifically, a swing drive assembly is arranged inside the movable cylindrical shell 22. The swing drive assembly belongs to the prior art. The swing drive assembly includes a swing motor and a crank-link mechanism. The swing motor drives the movable cylindrical shell 22 to swing left and right relative to the fixed chassis 21 through the crank-link mechanism. Since the swing drive assembly is not the focus of the present invention, it will not be described in detail. As Figure 3 and Figure 4 shown, a spherical concave surface 2202 is formed on the top of the movable cylindrical shell 22, and a socket 2201 is formed on the spherical concave surface 2202. As Figure 5 shown, two supporting feet 111 are arranged at the lower part of the fan housing assembly 1. As Figure 8 shown, the supporting feet 111 are inserted into the corresponding sockets 2201. Thus, the movable cylindrical shell 22 can swing horizontally back and forth synchronously with the fan housing assembly 1; the lower ends of the supporting feet 111 can be buckled with the lower ends of the sockets 2201 or connected by screws. Therefore, under normal use conditions, the supporting feet 111 and the movable cylindrical shell 22 cannot move relative to each other. The fan housing assembly 1 is hinged to the upper ends of the supporting feet 111. Thus, during daily use, the fan housing assembly 1 and the movable cylindrical shell 22 cannot be separated.

[0022] As Figure 1 and Figure 2 shown, the rear spherical cover shell 11 is adaptively arranged inside the spherical concave surface 2202. As Figure 3 and Figure 4As shown, an avoidance notch 2203 for adapting to avoid the air duct body 12 is formed at the front part of the spherical concave surface 2202. The avoidance notch 2203 penetrates through the movable cylinder shell 22 forward. In other words, in Figure 1 the shown state, the lower part of the air duct body 12 is located in the avoidance notch 2203, and the avoidance notch 2203 is adapted to the outer shape of the air duct body 12. Thus, the avoidance notch 2203 includes a concave wall surface, and the above concave wall surface is roughly a part of an inner cylindrical surface. In Figure 1 the basis of the shown state, the fan housing assembly 1 can swing slightly upward relative to the movable cylinder shell 22 to adjust the air outlet angle.

[0023] As Figure 2 shown, by setting the structure of the above air duct body 12, it is beneficial to increase the length setting of the front part of the fan housing assembly 1, which is beneficial to accommodating the gland 15 in the front part of the fan housing assembly 1; as Figure 1 shown, by forming the avoidance notch 2203 structure, the upper part of the movable cylinder shell 22 can maintain the effect of wrapping the fan housing assembly 1 (in Figure 1 the shown state), avoiding dust from easily accumulating between the fan housing assembly 1 and the movable cylinder shell 22, and also avoiding the dust between the fan housing assembly 1 and the movable cylinder shell 22 from being easily seen, so that the circulation fan can maintain good cleanliness. Since the air duct body 12 is screwed and connected to the ventilation hood disc 16, the ventilation hood disc 16 can be unscrewed by hand for convenient disassembly. Then, hold the turbine fan blade 13 with one hand, and unscrew the gland 15 with the other hand to disassemble the gland 15. Then, pull the turbine fan blade 13 forward, and the turbine fan blade 13 can be placed in the water tray for rinsing. Combine with dishwashing liquid to remove the trace oil stains attached to the turbine fan blade 13, so as to avoid the turbine fan blade 13 from quickly sticking dust during subsequent use. After cleaning, install the turbine fan blade 13 back onto the motor rotating shaft 141, and then screw and install the gland 15 back onto the motor rotating shaft 141, so that the turbine fan blade 13 is axially positioned on the motor rotating shaft 141. Finally, install the ventilation hood disc 16 back into the front end of the air duct body 12; from the above, it can be seen that the circulation fan of the present utility model is easy to disassemble, more convenient to clean, and beneficial to keeping the circulation fan in good working condition.

[0024] Furthermore, as Figure 5As shown, the gland 15 includes a handwheel portion 151 and a flange portion 152. The front end of the flange portion 152 is integrally connected to the rear end of the handwheel portion 151. The rear surface of the flange portion 152 abuts against the front side of the bushing portion 130. Thus, it is convenient for the user to pinch the handwheel portion 151 with fingers to rotate the gland 15. After the gland 15 is tightened, since the flange portion 152 extends outward relative to the handwheel portion 151, the flange portion 152 has a larger radial contact range with the front end face of the bushing portion 130. The flange portion 152 can prevent the turbine fan blade 13 from shaking back and forth, which is beneficial to the stable operation of the turbine fan blade 13. Anti-slip lines can be formed on the handwheel portion 151 substantially parallel to the axis direction of the gland 15.

[0025] Furthermore, as Figure 2 and Figure 6 shown, the ventilation hood plate 16 is formed with an air outlet pipe portion 160. The front end portion of the turbine fan blade 13 is disposed within the air outlet pipe portion 160. Thus, the air outlet pipe portion 160 can guide the airflow generated by the operation of the turbine fan blade 13. A rotary button 161 is formed on the outer wall of the air outlet pipe portion 160. As Figure 5 shown, an inner flange 121 is formed within the front end portion of the air cylinder body 12. A rotary button notch 1211 for the rotary button 161 to pass through is formed on the inner flange 121. As Figure 7 shown (it should be noted that for easy viewing, Figure 7 the air cylinder body 12 in

[0026] is partially cut), one end edge portion of the rotary button 161 is buckled to the rotary button notch 1211; through the above arrangement, when the ventilation hood plate 16 needs to be disassembled, the ventilation hood plate 16 is rotated counterclockwise slightly to disengage the rotary button 161 from the edge portion of the rotary button notch 1211, and then the ventilation hood plate 16 is pulled forward to disengage the ventilation hood plate 16 from the air cylinder body 12. When the ventilation hood plate 16 needs to be installed, the ventilation hood plate 16 is inserted into the air cylinder body 12. During this period, the rotary button 161 correspondingly passes backward through the rotary button notch 1211, and then the ventilation hood plate 16 is rotated clockwise, so that one end edge portion of the rotary button 161 is buckled to the corresponding rotary button notch 1211. By arranging the rotary button 161 on the outer wall of the air outlet pipe portion 160, it is avoided that the rotary button 161 affects the outgoing air flow generated by the operation of the turbine fan blade 13. Figure 5 shown, an arc-shaped through groove 1212 is formed on the inner flange 121. As Figure 6 shown, the ventilation hood plate 16 is formed with a positioning insertion piece 162. The positioning insertion piece 162 is disposed outside the air outlet pipe portion 160. As Figure 7 shown, the positioning insertion piece 162 is inserted backward into the corresponding arc-shaped through groove 1212. In other words, in the radial direction of the ventilation hood plate 16, the arc-shaped through groove 1212 positions the ventilation hood plate 16, but in the circumferential direction, the positioning insertion piece 162 can slide within the corresponding arc-shaped through groove 1212.

[0027] Further, as Figure 6 shown, the ventilation hood disc 16 is formed with radial bars 163, that is to say, the radial bars 163 extend along the radius direction of the ventilation hood disc 16, and the radial bars 163 are evenly distributed circumferentially. Thus, the radial bars 163 are radially distributed, making the gap between the radial bars 163 in the central region of the ventilation hood disc 16 relatively narrow, while the gap between the radial bars 163 in the outer peripheral region of the ventilation hood disc 16 relatively wide. Then, the fingertips of a person can be relatively easily inserted into the gap between the radial bars 163 at the outer peripheral part of the ventilation hood disc 16, and it is relatively easy to apply a rotational force to the ventilation hood disc 16, facilitating the installation and disassembly of the ventilation hood disc 16.

Claims

1. An easily detachable circulation fan, comprising a fan housing assembly (1) and a swing base assembly (2). A fan blade motor (14) and a turbine fan blade (13) are arranged inside the fan housing assembly (1). It is characterized in that: The fan housing assembly (1) includes a rear spherical housing (11) and a wind cylinder body (12). The rear end of the wind cylinder body (12) is installed and connected to the front end of the rear spherical housing (11). A ventilation hood disc (16) is internally screwed and connected to the front end of the wind cylinder body (12). The fan blade motor (14) is provided with a motor rotating shaft (141). An axial stop member (1411) is provided on the motor rotating shaft (141). The turbine fan blade (13) is formed with a sleeve portion (130). The sleeve portion (130) is adaptively sleeved on the motor rotating shaft (141). A gland (15) is screwed to the front end of the motor rotating shaft (141). The sleeve portion (130) is clamped between the gland (15) and the axial stop member (1411). The gland (15) is arranged inside the front part of the wind cylinder body (12). The swing base assembly (2) includes a fixed chassis (21) and a movable cylindrical shell (22). The movable cylindrical shell (22) is swingably arranged on the upper side of the fixed chassis (21). A spherical concave surface (2202) is formed at the top of the movable cylindrical shell (22). An insertion opening (2201) is formed on the spherical concave surface (2202). The lower part of the fan housing assembly (1) is provided with support feet (111). The support feet (111) are inserted into the corresponding insertion openings (2201). The rear spherical housing (11) is adaptively arranged inside the spherical concave surface (2202). An avoidance notch (2203) for adaptively avoiding the wind cylinder body (12) is formed at the front part of the spherical concave surface (2202). The avoidance notch (2203) penetrates through the movable cylindrical shell (22) forward.

2. The detachable circulation fan according to claim 1, wherein: The gland (15) includes a handwheel portion (151) and a flange portion (152). The front end of the flange portion (152) is integrally connected to the rear end of the handwheel portion (151). The rear surface of the flange portion (152) abuts against the front side of the sleeve portion (130).

3. The detachable circulation fan according to claim 1, wherein: The ventilation hood disc (16) is formed with an air outlet pipe portion (160). The front end portion of the turbine fan blade (13) is arranged inside the air outlet pipe portion (160). Rotating buttons (161) are formed on the outer wall of the air outlet pipe portion (160). An inner flange (121) is formed inside the front end portion of the wind cylinder body (12). A rotating button notch (1211) for the rotating buttons (161) to pass through is formed on the inner flange (121). The rotating buttons (161) are buckled to the edge portion of one end of the rotating button notch (1211).

4. The detachable circulation fan according to claim 3, wherein: An arc-shaped through groove (1212) is formed on the inner flange (121). The ventilation hood disc (16) is formed with a positioning insertion piece (162). The positioning insertion piece (162) is inserted backward into the corresponding arc-shaped through groove (1212).

5. The detachable circulation fan according to claim 4, wherein: The ventilation hood disc (16) is formed with radial grid bars (163). The radial grid bars (163) are evenly distributed circumferentially.

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