A magnetic suspension rotating device without friction resistance and its application

Abstract

The present invention belongs to the technical field of fans, and specifically discloses a frictionless magnetic suspension rotating device and its application. The frictionless magnetic suspension rotating device includes a magnetic shell and a rotating drive member. The fixed portion of the rotating drive member and the magnetic shell are arranged in a contactless suspension. The outer periphery of the fixed end of the rotating drive member is elastically connected to the magnetic suspension end of the magnetic shell via an elastic ring. The magnetic suspension end of the magnetic shell is limited to the fixed end of the rotating drive member via a limiting column. The rotating end of the rotating drive member is provided with a rotating member. The frictionless magnetic suspension rotating device of the present invention uses magnetic suspension to completely separate the magnetic shell from the rotating drive member and elastically limit the connection, thereby achieving contactless and frictionless rotation of the rotating member. When the rotation speed of the rotating drive member is increased, no noise or vibration is generated.

Description

Technical Field

[0001] The present invention belongs to the technical field of fans, and in particular relates to a magnetic suspension rotating device without friction resistance and application thereof. Background Art

[0002] The existing fan directly drives the blades to rotate through the motor, and the rear mesh cover of the fan is fixed on the motor. When the fan is working, it will produce a certain amount of noise. The "eccentricity" of the fan blades is the main reason for the high noise.

[0003] High-quality fans have less deviation, and the center of gravity of the fan blades is on the axis. They are very stable when running and have little noise. However, there will still be resonance problems when placed on a flat surface. Generally, it is necessary to install soft rubber to filter the vibration at the bottom, but the effect is not complete. Inferior fans have larger deviations, and the center of gravity of the fan blades is not on the axis, causing "eccentricity". When such a fan is turned, it is equivalent to an eccentric (an eccentric is an eccentric wheel added to the motor shaft). As the use time increases, the fan bearings gradually wear out, or the fan heat sink is not installed firmly and becomes loose, which will cause The fan is unstable, the noise becomes louder, and the vibration is intensified, especially for portable fans. The higher the speed, the greater the wind force, but the vibration and noise (above 70 decibels) will also be greater. The resonance between the portable fan body and the placement surface will also be stronger, causing the portable fan to gradually move and shift on the placement surface, and then emit a resonant sound, which directly affects user use. Due to the volume limitation of the portable fan, the wind force cannot be increased by changing the shape and size of the fan blades, and the speed can only be increased. Therefore, the noise and vibration problems of the portable fan directly limit the increase in the wind force of the portable fan.

[0004] Therefore, the inventor is committed to designing a shock-absorbing device and a fan to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a magnetic suspension rotating device without friction resistance, which completely separates the rotating driving member from the magnetic shell and does not generate noise and vibration when the rotating speed of the rotating driving member is increased.

[0006] Another object of the present invention is to provide a magnetic suspension rotating device without friction resistance for use in a magnetic suspension portable fan.

[0007] In order to achieve the above object, a technical solution adopted by the present invention is:

[0008] A magnetic suspension rotation device with no friction resistance includes a magnetic shell and a rotating drive member. The fixed part of the rotating drive member is suspended without contact with the magnetic shell. The magnetic suspension end of the magnetic shell is limited and elastically connected to the fixed end of the rotating drive member. The rotating end of the rotating drive member is provided with a rotating member.

[0009] As an improvement of the frictionless magnetic levitation rotating device of the present invention, the rotating driving member is a motor, the stator base of the motor forms the fixed part of the rotating driving member, and the rotating shaft of the motor and the outer casing of the motor are fixedly connected to form the rotating end of the rotating driving member.

[0010] As an improvement to the friction-free magnetic suspension rotating device of the present invention, a plurality of pairs of magnets are provided at intervals on the suspension surfaces of the rotation driving member and the magnetic shell.

[0011] As an improvement to the frictionless magnetic levitation rotating device of the present invention, a plurality of hooks are provided at intervals on the periphery of the fixed part of the rotating drive component, and a plurality of hanging platforms are provided at intervals on the magnetic levitation end of the magnetic shell. The hooks correspond to the hanging platforms one by one and the two are elastically connected by an elastic ring.

[0012] As an improvement to the friction-free magnetic suspension rotating device of the present invention, the magnetic shell is limited by a limiting column and the rotating drive component. The limiting column is vertically arranged on the magnetic shell and extends into the rotating drive component with a gap. The limiting end of the limiting column is provided with an elastic sleeve.

[0013] In order to achieve the above-mentioned another object, a technical solution adopted by the present invention is:

[0014] The invention discloses an application of a magnetic suspension rotating device without friction resistance, wherein the magnetic suspension rotating device without friction resistance is applied to a magnetic suspension portable fan.

[0015] As an improvement to the application of the frictionless magnetic levitation rotating device of the present invention, the magnetic shell is mesh-shaped to form a rear mesh cover, the lower end of the rear mesh cover is hinged with a base, the base is rotatably connected to a charging base through a rotating member, and the charging base is electrically connected to the rotating drive member through the rotating member.

[0016] As an improvement to the application of the frictionless magnetic levitation rotating device of the present invention, one end of the rotating part is located inside the base and is rotationally limited by a limiting protrusion, and the other end of the rotating part extends outside the base and is inserted into the slot of the charging base, and the contact terminal in the rotating part elastically presses against the contact pin at the bottom of the slot.

[0017] As an improvement to the application of the frictionless magnetic suspension rotating device of the present invention, a card block is slidably and elastically connected in the charging seat, and the buckle of the card block extends into the slot and engages with the card slot on the side of the rotating part.

[0018] As an improvement to the application of the frictionless magnetic levitation rotating device of the present invention, a hinged end of the rear mesh cover is slidably connected to a limit block, the limit block slides and extends into the base to rotate and limit, a strap seat or a clip is movably connected to the charging seat, and an abutment block is hinged on the connecting surface of the strap seat or the clip, and the abutment block abuts the charging seat, the rear mesh cover is detachably connected to the front mesh cover through a connecting frame, and an elastic member is provided on the side of the front mesh cover close to the rotating drive member, and the rotating member and the rotating member are located between the rear mesh cover and the front mesh cover.

[0019] Compared with the prior art, the frictionless magnetic suspension rotating device of the present invention completely separates the rotating driving part from the magnetic shell through a contactless suspension setting between the rotating driving part and the magnetic shell, and does not generate friction resistance, thereby avoiding noise and vibration when the rotating driving part rotates at high speed. At the same time, the fixed end of the rotating driving part and the magnetic shell are limited and elastically connected, so that the rotating part can be suspended in a specified position during rotation, and will not produce large piece offsets in both axial and radial directions. It also has good shockproof and shock filtering characteristics. At the same time, the vibration of the rotating driving part will not be transmitted to the magnetic shell, making the high-speed rotation of the rotating driving part smoother, further avoiding noise and vibration.

[0020] Since the frictionless magnetic levitation rotating device of the present invention can rotate the rotating part in contactless suspension without changing the shape and size of the rotating part, the required rotation speed of the fan can be achieved. Therefore, the frictionless magnetic levitation rotating device can be applied to magnetic levitation portable fans. While increasing the wind speed of the portable fan, it does not generate noise and vibration, and will not cause collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an enlarged perspective cross-sectional view of the fan head of the magnetic levitation portable fan of the present invention;

[0022] Figure 2 This is a three-dimensional exploded view of the fan head of the magnetic levitation portable fan of the present invention;

[0023] Figure 3 This is a three-dimensional exploded view of the fan head of the magnetic levitation portable fan of the present invention from another perspective;

[0024] Figure 4 It is a partial exploded perspective view of the fan head of the magnetic levitation portable fan of the present invention;

[0025] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle;

[0026] Figure 6 It is a three-dimensional enlarged view of the internal structure of the base of the present invention;

[0027] Figure 7 This is a three-dimensional assembly and partial exploded view of the fan head, base, charging base and strap base of the present invention;

[0028] Figure 8 yes Figure 7 A partial enlarged view of point B in the middle;

[0029] Figure 9 It is a three-dimensional assembly diagram of the fan head, base and charging station of the present invention;

[0030] Figure 10 is a perspective view of the strap seat of the present invention;

[0031] Figure 11 This is a three-dimensional assembly diagram of the fan head, base, charging stand and clip of the present invention;

[0032] Figure 12 is a perspective view of the clip of the present invention;

[0033] Figure 13 It is another three-dimensional assembly of the fan head, base, charging seat and strap seat of the present invention.

[0034] Illustration:

[0035] 1. Rear mesh, 11. Hanging table, 12. First magnet, 13. Limit block, 14. Limit column, 141. Elastic sleeve, 2. Fan blade, 21. Hook, 22. Stator base, 221. Second magnet, 3. Connecting frame, 31. Snap-on slot, 4. Front mesh, 41. Snap-on block, 42. Elastic part, 5. Elastic ring, 6. Base, 61. Limit seat, 62. Rotating body, 621. Positioning slot, 6 22. Card slot, 623. Contact terminal, 624. Limiting protrusion, 7. Charging base, 71. Card block, 711. Card switch, 712. Buckle, 72. Charging shell, 721. Slot, 7211. Positioning column, 7212. Contact pin, 722. Slide groove, 8. Clip, 81. First abutment block, 82. First slide column, 9. Strap seat, 91. Second abutment block, 92. Second slide column. DETAILED DESCRIPTION

[0036] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings, which are for reference and illustration only and do not limit the scope of patent protection of the present invention.

[0037] Reference Figures 1 to 5 A magnetic suspension rotating device with no friction resistance includes a magnetic shell, a rotating drive member and a rotating member. The fixed part of the rotating drive member and the magnetic shell are arranged in a contactless suspension. The magnetic suspension end of the magnetic shell is limited and elastically connected to the fixed end of the rotating drive member. The rotating end of the rotating drive member is provided with a rotating member.

[0038] Reference Figure 1 、 Figure 2 、 Figure 4 and Figure 5 The rotating drive member is specifically a motor (not shown), which has a stator winding (not shown), a stator base 22, a rotating shaft and a housing (not shown). The stator winding is fixed to the stator base 22 to form a fixed part of the rotating drive member. The rotating shaft and the housing are fixed together to form a rotor. The rotor is the rotating end of the rotating drive member. The rotating member is fixedly sleeved on the housing. A plurality of pairs of magnets are spaced apart on the floating surfaces of the stator base 22 and the magnetic shell. The plurality of pairs of magnets are specifically located between the stator base 22 and the magnetic shell. This embodiment is preferred. Four pairs of magnets are selected, and the same pair of magnets repel each other. Each pair of magnets is specifically composed of a first magnet 12 and a second magnet 221. The four first magnets 12 are fixed at intervals on the floating surface of the magnetic shell and are arranged around the center of the magnetic shell. The four second magnets 221 are fixed on the floating surface of the stator base 22 and are arranged around the rotating shaft of the motor. The positions of the four first magnets 12 and the four second magnets 221 correspond one to one. A limiting hole is provided at the bottom center of the stator base 22, and the four second magnets 221 are arranged at intervals around the limiting hole of the stator base 22.

[0039] Reference Figures 1 to 5, the outer periphery of the stator base 22 is provided with a plurality of hooks 21 at intervals, all of which are L-shaped, and the magnetic suspension end of the magnetic shell is provided with a plurality of hanging platforms 11 at intervals, all of which are T-shaped, and the number of hooks 21 is equal to the number of hanging platforms 11 and the two are arranged in a one-to-one correspondence. In this embodiment, four hooks 21 and four hanging platforms 11 are preferably selected. The four hooks 21 are specifically fixed on the side surfaces of the stator base 22 and are arranged at intervals around the four second magnets 221, and the four hanging platforms 11 are specifically fixed on the magnetic shell and are arranged at intervals around the four first magnets 12. Each hook 21 is elastically connected to the corresponding hanging platform 11 through an elastic ring 5 (that is, one end of the elastic ring 5 is hung on the hook 21, and the other end of the elastic ring 5 is hung on the corresponding hanging platform 11), so that the motor is elastically connected to the magnetic shell, preventing the motor from deviating from the magnetic shell during operation, affecting the magnetic suspension effect between the motor and the magnetic shell, and controlling the smooth operation of the motor. In this embodiment, the elastic ring 5 is preferably a circular rubber ring, and the material is hydrogenated nitrile rubber or It is made of fluorine rubber, which is resistant to fracture and aging, and has a good shock absorption effect. Since the magnetic levitation shock absorber of the present invention is floating, when the rotating part rotates too fast, the rotating part will produce a large radial offset. Therefore, the magnetic shell needs to be limited by the limiting column 14 and the rotating drive part. Specifically, the limiting column 14 is vertically arranged on the magnetic shell and the gap extends into the limiting hole of the rotating drive part. The four first magnets 12 are spaced around the limiting column 14. In order to prevent the limiting column 14 from contacting and wearing too much with the limiting hole, the limiting column The limiting end of 14 is also provided with an elastic sleeve 141. When the rotating part rotates normally, the radial displacement distance of the rotating part is small. At this time, there is a certain gap between the elastic sleeve 141 and the inner wall of the limiting hole. The limiting column 14 and the elastic sleeve 141 do not contact the inner wall of the limiting hole. When the rotating part rotates too fast or is affected by external force, the rotating part will deviate to a larger position in the radial direction. At this time, the limiting column 14 elastically contacts the inner wall of the limiting hole through the elastic sleeve 141, limiting the rotating part from further deviating in its radial direction.

[0040] Reference Figures 1 to 5 The working principle of the frictionless magnetic suspension rotating device of the present invention is as follows: the stator base 22 of the motor and the magnetic shell are suspended under the mutual repulsion of four pairs of magnets, so that the stator base 22 and the magnetic shell are completely separated. When the motor shell rotates relative to the stator base 22, the shell drives the rotating part to rotate, and the four elastic rings 5 elastically pull the stator base 22 to avoid noise and vibration.

[0041] The frictionless magnetic suspension rotating device of the present invention completely separates the motor from the magnetic shell through a contactless suspension setting between the motor and the magnetic shell, thereby avoiding noise and vibration when the motor rotates at high speed. At the same time, the fixed end of the motor is elastically connected to the magnetic shell, so that the magnets that repel each other can be fixed in a specified position and suspended. Since the elastic ring 5 has good shockproof and shock filtering properties, the vibration of the motor will not be transmitted to the magnetic shell, and the high-speed rotation of the motor is more stable, further avoiding noise and vibration. Generally, suspended products will fall off when exposed to a little external force, so they can only be used as decorations. The frictionless magnetic suspension rotating device of the present invention can make good use of the repulsive characteristics of the magnet and will not fall off. It is suitable for application in product-type functional components that are frequently moved. It has good balance and will not swing significantly.

[0042] Reference Figures 1 to 13 , an application of a magnetic suspension rotating device without friction resistance, the magnetic suspension rotating device without friction resistance is mainly used in a magnetic suspension portable fan (that is, the magnetic suspension portable fan is based on the above-mentioned magnetic suspension rotating device without friction resistance), the magnetic suspension portable fan comprises a front mesh cover 4, a base 6, a charging base 7 and the above-mentioned magnetic suspension rotating device without friction resistance, the magnetic shell is mesh-shaped and concave to form a rear mesh cover 1, the front mesh cover 4 is connected to the rear mesh cover 1 through a connecting frame 3, the motor and the rotating member are located between the rear mesh cover 1 and the front mesh cover 4, in this embodiment, the rotating member is the fan blade 2, which is directly sleeved on the outer shell of the motor, the front mesh cover 4, the motor, the fan blade 2, the rear mesh cover 1 and the connecting frame 3 together constitute the fan head of the fan of the present invention, the base 6 is hinged to the lower end of the rear mesh cover 1 and the connecting frame 3, the charging base 7 is located at the bottom of the base 6 and is electrically connected to the base 6, the battery in the charging base 7 drives the motor to work normally, and the outer shell of the motor drives the fan blade 2 to rotate.

[0043] Reference Figure 2 、 Figure 3 and Figure 6The rear grille 1 is connected to the connecting frame 3 by a hook, and the hinge ends of the rear grille 1 and the connecting frame 3 are respectively extended with two L-shaped hinge parts at intervals. When the rear grille 1 is buckled with the connecting frame 3, the four hinge parts cooperate with each other and form two symmetrical hinge shafts at their ends. At least one hinge part of the rear grille 1 is slidably connected to a limit block 13. The limit block 13 is located on the back of the hinge part at the lower end of the rear grille 1. The limit block 13 is used to limit the rotation of the fan head and prevent the fan head from rotating during use. The mesh cover 4 makes the groove on the clamping block 41 cooperate with the protrusion at the bottom of the clamping groove 31, and the front mesh cover 4 is smoothly installed on the connecting frame 3. Since the magnetic levitation shock absorber is floating, during operation, if there is a violent collision, the fan blade 2 will collide with the outer shell composed of the front mesh cover 4, the connecting frame 3, and the rear mesh cover 1, causing the fan blade 2 to break at the middle position of the front mesh cover 4. Therefore, the present invention fixes a cylindrical elastic member 42 on the side of the middle of the front mesh cover 4 close to the rotating drive member to limit the axial floating range of the fan blade 2, thereby avoiding direct collision between the fan blade 2 and the front mesh cover 4. At the same time, the limiting column 14 on the rear mesh cover 1 is used to elastically limit the radial offset position of the stator base 22 to prevent the fan blade 2 from radially offsetting and colliding with the rear mesh cover 1 and the connecting frame 3 during rapid rotation, and the elastic sleeve 141 sleeved on the limiting column 14 can limit the radial floating range of the fan blade 2.

[0044] Reference Figure 6 The base 6 is formed by two shell covers. The base 6 is located between the hinged portion of the rear mesh cover 1 and the connecting frame 3. The two hinge shafts formed by the combination of the rear mesh cover 1 and the connecting frame 3 extend into the base 6 from the two sides of the base 6 to realize the hinged connection between the fan head and the base 6. When the fan head does not need to rotate, the limit block 13 is directly dialed to make the head of the limit block 13 slide into the base 6. The rotation of the shell of the base 6 is limited to limit the rotation of the fan head. In order to realize the rotation and electrical connection between the base 6 and the charging base 7, the bottom plug of the base 6 is inserted A rotating part is provided, which has a rotating body 62. Two cylindrical contact terminals 623 are provided at intervals at the rotation center of the rotating body 62. The two contact terminals 623 are electrically connected to the motor. A limiting protrusion 624 for limiting the rotation angle of the fan head is provided on the upper end side surface of the rotating body 62. The lower end of the rotating body 62 is square and extends outside the base 6. A positioning groove 621 is vertically provided at the lower end of the back side of the rotating body 62, and a card groove 622 is horizontally provided at the lower end of the side surface of the rotating body 62.

[0045] Reference Figures 7 to 9The charging base 7 is assembled by a charging shell 72 and a cover. A circuit board is provided in the charging shell 72. A battery compartment (not shown) for installing a battery is provided on the back of the charging shell 72. A charging socket for charging the battery is provided on one side of the charging shell 72. A slot 721 is provided on the other side and top of the charging shell 72. Each slot 721 is provided with a positioning column 7211 on the side wall away from the cover. The bottom of the slot 721 is also elastically connected to two contact pins 7212. The two contact pins 7212 are electrically connected to the circuit board. There are also two sliding and elastically connected card blocks 71 in the charging base 7. The two card blocks 71 are respectively located beside the two slots 721. A card switch 711 is protruded on the card block 71. The card switch 711 passes through the cover. A spring (not shown) is sleeved on the protruding part of one side of the card block 71. A card buckle 712 is provided on the other side of the card block 71. The card buckle 712 can be moved with the sliding of the card block 71 When the charging base 7 is removed, the corresponding latch 721 is directly pressed, and the latch 712 is pressed down, so that the charging base 7 is not rotated.

[0046] Reference Figures 10 to 13 The charging base 7 may also be movably connected to a strap base 9 or a clip 8 , and both the strap base 9 and the clip 8 may slide relative to the charging base 7 .

[0047] Reference Figure 7 、 Figure 10 and Figure 13 A second abutment block 91 and two second slide posts 92 are provided on the connecting surface of the strap seat 9. The two second slide posts 92 are arranged at intervals. The two second slide posts 92 can extend into the corresponding two slide grooves 722 from the side grooves respectively, so that the second slide posts 92 slide in the corresponding slide grooves 722. The second abutment block 91 is hinged to the strap seat 9. The second abutment block 91 can abut the charging seat 7, and the two side surfaces of the strap seat 9 can be connected to the straps (not shown).

[0048] Reference Figure 11 and Figure 12A lower magnet, two first slide posts 82 and a first abutment block 81 are provided on the connecting surface of the clip 8. The two first slide posts 82 are arranged at intervals. The two first slide posts 82 can extend into the corresponding two slide grooves 722 from the side grooves respectively, so that the first slide posts 82 slide in the corresponding slide grooves 722. The lower magnet is located between the two first slide posts 82. The lower magnet can attract the upper magnet. The first abutment block 81 is hinged to the clip 8. The first abutment block 81 can abut the charging seat 7 to prevent the charging seat 7 from sliding out.

[0049] Reference Figures 1 to 13 The working principle of the magnetic levitation portable fan of the present invention is as follows: the circuit board in the charging base 7 controls the rotation of the motor housing, thereby driving the fan blades 2 to rotate. Since the motor and the rear mesh cover 1 are completely isolated by magnetic levitation, no noise or vibration will be generated when the wind speed of the portable fan is increased.

[0050] The magnetic levitation portable fan of the present invention can be used in the following ways:

[0051] When the rotating member at the bottom of the base 6 is plugged into the slot 721 at the top of the charging station 7, the fan head, the base 6 and the charging station 7 form a first combination ( Figure 8 ), the fan of the first combination can be placed directly on the desktop for use;

[0052] On the basis of the first combination, the bottom of the charging base 7 can also be connected to the strap base 9 to form a second combination ( Figure 6 ), the second combination of fans can also be placed on the desktop for use, but also can be connected to the strap seat 9 strap, tied to the arm for use;

[0053] On the basis of the first combination, the bottom of the charging stand 7 can also be connected to the clip 8 to form a third combination ( Figure 10 ), the third combination of fans can be clamped on the partitions of bedside or office;

[0054] When the rotating member at the bottom of the base 6 is plugged into the slot 721 on the side of the charging station 7, the fan head, the base 6 and the charging station 7 form a fourth combination (not shown), which can be used as a handheld fan.

[0055] On the basis of the fourth combination, the side of the charging base 7 can also be connected to the strap base 9 to form the fifth combination ( Figure 12 ), the fifth combination of fans can be tied to pillars in offices and other places for use.

[0056] In the above five combinations, in order to prevent the fan head from tilting backward or forward, the user can move the limit block 13 according to needs to fix the fan head.

[0057] The magnetic levitation portable fan of the present invention completely separates the motor from the rear mesh cover 1 without changing the shape and size of the fan blades 2, thereby increasing the wind speed of the portable fan without generating noise and vibration, and having good balance and stability.

[0058] The above disclosure is only a preferred embodiment of the present invention and cannot be used to limit the scope of protection of the present invention. Therefore, equivalent changes made within the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A magnetic suspension rotating device without friction resistance, characterized in that: The invention comprises a magnetic shell and a rotary drive member, wherein the fixed portion of the rotary drive member is arranged in a non-contact suspension with the magnetic shell, the outer periphery of the fixed end of the rotary drive member is elastically connected to the magnetic suspension end of the magnetic shell via an elastic ring, the magnetic suspension end of the magnetic shell is limited to the fixed end of the rotary drive member via a limiting post, and the rotating end of the rotary drive member is provided with a rotating member; Multiple pairs of magnets are spaced apart on the suspension surfaces of the rotary drive member and the magnetic shell, and the multiple pairs of magnets are arranged in a circle around the limiting pillar; The fixed part of the rotating drive member is provided with a plurality of hooks at intervals on the periphery thereof, and the magnetic suspension end of the magnetic shell is provided with a plurality of hooks at intervals on the periphery thereof. There are multiple hanging platforms, the hooks correspond to the hanging platforms one by one and the two are elastically connected through the elastic ring; The limiting post is vertically arranged on the magnetic shell and extends into the rotating drive member through a gap. The limiting end sleeve is provided with an elastic sleeve.

2. The frictionless magnetic levitation rotating device according to claim 1, characterized in that: The rotary driving member is a motor, the stator base of the motor forms the fixed part of the rotary driving member, and the rotating shaft of the motor and the housing of the motor are fixedly connected to form the rotating end of the rotary driving member.

3. An application of a frictionless magnetic suspension rotating device according to any one of claims 1 to 2, characterized in that: The magnetic suspension rotating device without friction resistance is applied to a magnetic suspension portable fan.

4. The application of the frictionless magnetic levitation rotating device according to claim 3, characterized in that: The magnetic shell is mesh-shaped to form a rear mesh cover, the lower end of the rear mesh cover is hinged with a base, the base is rotatably connected to a charging base via a rotating member, and the charging base is electrically connected to the rotating drive member via the rotating member.

5. Application of the frictionless magnetic levitation rotating device according to claim 4, characterized in that: One end of the rotating member is located in the base and is rotationally limited by a limiting protrusion, and the other end of the rotating member extends out of the base and is inserted into the slot of the charging seat, and the contact terminal in the rotating member elastically presses against the contact pin at the bottom of the slot.

6. Application of the frictionless magnetic levitation rotating device according to claim 5, characterized in that: A card block is slidably and elastically connected in the charging seat, and the buckle of the card block extends into the slot and is engaged with the card slot on the side of the rotating member.

7. Application of the frictionless magnetic levitation rotating device according to claim 4, characterized in that: A hinged end of the rear mesh cover is slidably connected to a limit block, and the limit block slides and extends into the base to rotate and limit. A strap seat or a clip is movably connected to the charging seat, and an abutment block is hinged on the connecting surface of the strap seat or the clip, and the abutment block abuts the charging seat. The rear mesh cover is detachably connected to the front mesh cover through a connecting frame, and an elastic member is provided on the side of the front mesh cover close to the rotating drive member, and the rotating member and the rotating member are located between the rear mesh cover and the front mesh cover.

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