Motor and handheld fan of portable rotating equipment

Abstract

The utility model provides a motor of portable rotating equipment, which is a high-speed three-phase motor, and comprises a cylinder body, the cylinder body comprises an outer ring part, an inner ring part and a plurality of connecting blades for connecting the outer ring part and the inner ring part, a substrate is formed in the inner ring part, a hollow shaft cylinder is formed by protruding and extending backwards from the substrate, and a first buffer part is arranged outside the outer ring part; the driving plate is mounted at the front end of the inner ring part; the driving plate is electrically connected with the stator assembly and drives the rotor assembly to rotate, and the stator assembly and the rotor assembly are fixed in a nested mode and fixed to the shaft barrel from the back. By using the high-speed three-phase motor in the portable rotating equipment, under the condition that the size of the portable rotating equipment is limited, the motor is stable in structure and reasonable in layout, and sufficient rotating speed and power are provided for the portable rotating equipment.

Description

Technical Field

[0001] The present application relates to the technical field of motors, and in particular to a motor for a small-sized portable rotating device. Background Art

[0002] With the development of technology, people have higher and higher requirements for the portability of equipment, so that it can meet the needs of business trips, travel, outdoor use, etc. in addition to home use. Common portable rotating equipment includes: portable fans, portable air pumps, portable hair dryers, portable food mixers, etc.

[0003] However, the motors of common portable rotating devices usually use conventional low-speed single-phase motors, which are low-cost but have poor performance. In order to provide sufficient power and speed, the motors are usually large in size, and the large motors make the overall size of these rotating devices larger, which greatly reduces the portability of these rotating devices. The balance between the performance and size of the motors of portable rotating devices is an urgent problem to be solved. Summary of the invention

[0004] In view of this, the present application provides a motor for a portable rotating device. By using a high-speed three-phase motor in the portable rotating device, the motor structure is stable and the layout is reasonable when the size of the portable rotating device is limited, thereby providing sufficient speed and power for the portable rotating device.

[0005] The present application provides a motor for a portable rotating device, which is a high-speed three-phase motor, comprising: a cylinder, comprising an outer ring portion, an inner ring portion and a plurality of connecting leaves connecting the outer ring portion and the inner ring portion, a base plate being formed inside the inner ring portion, a hollow shaft cylinder protruding and extending rearward from the base plate, and a first buffer member being provided outside the outer ring portion; a drive plate, mounted on the front end of the inner ring portion; a stator assembly and a rotor assembly, the drive plate being electrically connected to the stator assembly and driving the rotor assembly to rotate, the stator assembly and the rotor assembly being nested and fixed to each other and fixed to the shaft cylinder from the rear.

[0006] Furthermore, the cylinder has air intake at the rear end and outlet at the front end, the inner ring portion is shorter than the outer ring portion, the inner ring portion is located on the inner side corresponding to the front end portion of the outer ring portion, and the front end of the inner ring portion extends forward beyond the front end of the outer ring portion; a receiving portion and a buckle are provided at the front end of the inner ring portion, the receiving portion is used to receive the drive plate, and the buckle is used to buckle the drive plate; the base plate is provided with a wire passing notch, and the wire passes through the wire passing notch to electrically connect the drive plate and the stator assembly.

[0007] Furthermore, the rotor assembly includes a rotating shaft, a bearing and a limit member, the bearing, the limit member and the stator assembly are all inserted outside the rotating shaft, and the rotating shaft is inserted into the shaft cylinder from back to front; there are two bearings, one of which is clamped outside the rotating shaft and inside the shaft cylinder from back to front, and the other bearing is clamped outside the rotating shaft and inside the shaft cylinder from front to back, and the shaft cylinder is provided with a second buffer member between the two bearings, and the inner diameter of the shaft cylinder corresponding to the second buffer member is smaller than the inner diameter of the shaft cylinder corresponding to the bearing; a groove is provided radially outside the front part of the rotating shaft, and the limit member is clamped in the groove from front to back, and a third buffer member is provided between the front bearing and the limit member.

[0008] Furthermore, the rotor assembly also includes a casing, which is open toward the front and includes a rear portion and a side portion, the magnetic ring is fixed to the inner side of the casing side portion, and the stator assembly is fixed to the inner side of the magnetic ring; the shaft cylinder extends backward beyond the rear end of the inner ring portion but does not extend beyond the rear end of the outer ring portion, and in the radial direction, the stator assembly, the magnetic ring and the side portion of the casing are sleeved on the outer side of the shaft cylinder, and the front end of the casing side portion is closely spaced from the inner ring portion in the axial direction.

[0009] Furthermore, the rotor assembly also includes a fan, which is fixed at the rear end of the rotating shaft, and the front end of the fan is axially adjacent to the rear end of the casing; the fan includes a hub and a plurality of blades arranged around the outer side of the hub, rib blades are provided on the inner side of the hub, a notch is penetrated through the rear portion of the casing, a fourth buffer member passes through the notch at the rear portion of the casing, and is provided between the bearing at the rear and the rib blades of the fan, the rear end of the fourth buffer member abuts against the rib blades, and the front end of the fourth buffer member abuts against the bearing at the rear; a fifth buffer member is provided on the bearing outer sleeve.

[0010] Furthermore, the fan is a diagonal flow fan, comprising a hub and a plurality of blades arranged around the outside of the hub, the hub radially increasing and extending from back to front, and the hub is arc-shaped; the difference between any two of the diameter of the hub, the diameter of the casing and the diameter of the inner ring portion is less than 0.5 mm.

[0011] Furthermore, the distance between the side of the casing and the rear end of the inner ring part is smaller than the distance between the rear of the casing and the rear bearing; the distance between the side of the casing and the rear end of the inner ring part is smaller than the distance between the front end of the rotating shaft and the rear end of the driving plate.

[0012] Furthermore, the cylinder body also includes a plurality of extension leaves, which correspond to the plurality of connecting leaves one by one, and extend backward from the connecting leaves to form the extension leaves; the connecting leaves extend vertically forward, and the extension leaves are arc-shaped and extend, and the plurality of extension leaves surround the outside of the side of the casing.

[0013] Furthermore, the outer diameter of the cylinder is 23.71-24.05 mm, and the length of the cylinder is 30-33.05 mm.

[0014] The present application also provides a handheld fan, comprising a handheld portion and an air outlet portion, wherein the air outlet portion is provided with the motor of the above-mentioned portable rotating device.

[0015] Compared with the prior art, the motor of the portable rotating device of the present application has the following beneficial effects: by using a high-speed three-phase motor in the portable rotating device, the motor structure is stable and the layout is reasonable when the volume of the portable rotating device is limited, providing sufficient speed and power for the portable rotating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the structure of a portable fan provided by the present application;

[0017] Figure 2 is an exploded schematic diagram of a portable fan provided by the present application;

[0018] Figure 3 is an exploded schematic diagram of a portable fan provided by the present application from another perspective;

[0019] Figure 4 is a cross-sectional view of a portable fan provided by the present application;

[0020] Figure 5 is a cross-sectional view of a portable fan provided by the present application from another viewing angle;

[0021] Figure 6 It is a structural schematic diagram of the cylinder provided by this application;

[0022] Figure 7 It is a schematic diagram of the structure of the portable fan provided by the present application with some parts removed;

[0023] Figure 8 is a cross-sectional view of some parts of the portable fan provided by the present application removed;

[0024] Fig. 9 It is a schematic diagram of the exploded view of the portable fan air inlet cover assembly provided in the present application. DETAILED DESCRIPTION

[0025] In order to facilitate a better understanding of the purpose, structure, features, and functions of the present application, the present application is further described in conjunction with the accompanying drawings and specific implementation methods.

[0026] like Figures 1 to 4 As shown, the portable fan of the present application includes an air outlet portion 100 and a hand-held portion 200. The air outlet portion 100 is used for discharging air, and the hand-held portion 200 is used for being held by a user, so that the user can hold and move the portable fan for convenient use.

[0027] The air outlet 100 includes an outer shell 1, a casing 2, a first buffer 30 and a cylinder 4 from the outside to the inside. The cylinder 4 has air inlet at the rear end and air outlet at the front end. A motor 5 and a fan 6 are arranged inside the cylinder 4. The motor 5 is a high-speed three-phase motor. The high-speed three-phase motor can provide sufficient power and rotation speed to ensure the wind force of the portable fan. The first buffer 30 is arranged outside the cylinder 4, the casing 2 is arranged outside the first buffer 30, and the outer shell 1 is arranged outside the casing 2. By setting a four-layer structure of the cylinder 4, the first buffer 30, the casing 2 and the outer shell 1, the layers are fixed and the overall structure is stable. While using a high-speed three-phase motor, the overall shock absorption effect is guaranteed to be good. The first buffer 30 is arranged outside the cylinder 4. The first buffer 30 absorbs and reduces the vibration caused by the high-speed three-phase motor in time, so that the portable fan can rotate continuously and stably at a high speed.

[0028] In one embodiment, Figures 1 to 4 As shown, the casing 2 is integrally formed and connected from front to back, a limiting portion 20 is provided inside the casing 2, the cylinder 4 and the first buffer 30 are inserted into the casing 2 from back to front, and the limiting portion 20 limits the cylinder 4 and the first buffer 30. The outer diameter of the cylinder 4 is equal to or greater than the inner diameter of the first buffer 30, and the outer diameter of the first buffer 30 is equal to or greater than the inner diameter of the casing 2. The cylinder 4, the first buffer 30 and the casing 2 are tightly matched and have a stable structure. The outer shell 1 is integrally formed and connected from front to back, the outer diameter of the casing 2 is smaller than the inner diameter of the casing 1, and a plurality of ribs are equidistantly provided on the inner surface of the casing 1, so that the casing 2 can be easily inserted into the inner side of the casing 1, and a plurality of ribs can help tighten the casing 2. Of course, in other embodiments, a plurality of ribs can be equidistantly provided on the outer surface of the casing 2.

[0029] like Figure 2 and Figure 4As shown, the first buffer member 30 is used as an isolation buffer interface between the barrel 4 and the housing 2. In one embodiment, the first buffer member 30 is a smooth surface; in another embodiment, in order to enhance its isolation and buffering properties, a plurality of convex points may be arranged at intervals on the outer surface of the first buffer member. In addition, the first buffer member 30 may only cover part of the outer surface of the barrel 4, or the entire outer surface of the barrel 4, or the front end face and the rear end face of the barrel 4, but is not limited thereto.

[0030] In one embodiment, Figure 2 , Figure 4 and Figure 6 As shown, the cylinder 4 includes an outer ring portion 40, an inner ring portion 41, and a plurality of first connecting leaves 42 connecting the outer ring portion 40 and the inner ring portion 41. The inner ring portion 41 is shorter than the outer ring portion 40. The inner ring portion 41 is located at the inner side corresponding to the front end portion of the outer ring portion 40, and the front end of the inner ring portion 41 exceeds the front end of the outer ring portion 40. A base plate 44 is provided in the inner ring portion 41, and a hollow shaft cylinder 45 protrudes backward from the base plate 44. The motor 5 includes a stator assembly 51 and a rotor assembly. The stator assembly 51 and the rotor assembly are nested and fixed, and fixed to the shaft cylinder 45 from the rear. The fan 6 is installed on the rear side of the rotor assembly. The motor 5 also includes a drive plate 52. The front end of the inner ring portion 41 is provided with a receiving portion 46 and a buckle 47. The receiving portion 46 is used to receive the drive plate 52, and the buckle 47 is used to buckle and fix the drive plate 52. The base plate 44 is provided with a wire opening 440, through which a wire passes to electrically connect the drive plate 52 and the stator assembly 51. The drive plate 52 is electrically connected to the stator assembly 51, and drives the rotor assembly and the fan 6 to rotate.

[0031] In one embodiment, Figure 2 , Figure 4 , Figure 7 and Figure 8As shown, the rotor assembly includes a rotating shaft 501, a bearing 502 and a stopper 503, and the bearing 502, the stopper 503 and the stator assembly 51 are all inserted outside the rotating shaft 501. The shaft cylinder 45 extends backward beyond the rear end of the inner ring portion 41, but does not extend beyond the rear end of the outer ring portion 40. The rotating shaft 501 is inserted into the shaft cylinder 45 from back to front, and two bearings 502 are provided, one of which is clamped outside the rotating shaft 501 and inside the shaft cylinder 45 from back to front, and the other bearing 502 is clamped outside the rotating shaft 501 and inside the shaft cylinder 45 from front to back. The shaft cylinder 45 is provided with a second buffer (not shown, the same below) between the two bearings 502, and the inner diameter of the shaft cylinder 45 corresponding to the second buffer is smaller than the inner diameter of the shaft cylinder 45 corresponding to the bearing 502. A slot is provided radially outside the front of the rotating shaft 501, and the stopper 503 is fixed in the slot from front to back, and a third buffer 31 is provided between the front bearing 502 and the stopper 503. The second buffer and the third buffer 31 can effectively absorb and reduce the vibration between the rotating shaft 501 and the shaft cylinder 45, and the shock absorption effect is good.

[0032] In one embodiment, Figure 2 , Figure 4 , Figure 5 and Figure 8 As shown, the rotor assembly also includes a housing 504 and a magnetic ring 505, the housing 504 is open to the front, the housing 504 includes a rear portion and a side portion, the magnetic ring 505 is fixed to the inner side of the side portion of the housing 504, and the stator assembly 51 is fixed to the inner side of the magnetic ring 505. In the radial direction, the stator assembly 51, the magnetic ring 505 and the side portion of the housing 504 are sleeved on the outer side of the shaft cylinder 45, and the front end of the side portion of the housing 504 and the inner ring portion 41 are arranged in close proximity in the axial direction. The interval between the side portion of the housing 504 and the rear end of the inner ring portion 41 is smaller than the interval between the rear portion of the housing 504 and the rear bearing 502, so that even if the portable fan falls or is hit by other external impacts, the rear portion of the housing 504 will not impact and damage the rear bearing 502. The distance between the side of the casing 504 and the rear end of the inner ring portion 41 is smaller than the distance between the front end of the rotating shaft 501 and the rear end of the driving plate 52, so that even if the portable fan falls or is hit by other external impacts, the front end of the bearing 502 will not hit and damage the driving plate 52.

[0033] In one embodiment, Figure 2 , Figure 4 , Figure 5 and Figure 8As shown, the outer diameter of the barrel 4 is 23.71-24.05 mm, and the length of the barrel 4 is 30-33.05 mm. The volume of the barrel 4 is small, so that the overall volume of the portable fan can also be small, thereby improving the portability of the portable fan. The barrel 4 also includes a plurality of extension leaves 43, which correspond to the first connecting leaves 42 one by one, and extend backward from the first connecting leaves 42 to form the extension leaves 43. The first connecting leaves 42 extend vertically forward, and the extension leaves 43 extend in an arc shape, and the plurality of extension leaves 43 surround the outside of the side of the housing 504.

[0034] In one embodiment, Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, the fan 6 is fixedly arranged at the rear end of the rotating shaft 501, and the front end of the fan 6 is arranged adjacent to the rear end of the housing 504 in the axial direction. The fan 6 is arranged coaxially with the motor 5, and the fan 6 and the housing 504 are arranged adjacent to each other, so there is no need to arrange a transmission device between the motor 5 and the fan 6, which effectively improves the transmission efficiency of the fan 6. The fan 6 includes a hub 60 and a plurality of blades 61 arranged on the outside of the hub 60, and a rib blade 62 is arranged on the inner side of the hub 60. A notch is penetrated through the rear of the housing 504, and the fourth buffer 32 passes through the notch at the rear of the housing 504 and is arranged between the rear bearing 502 and the rib blade 62 of the fan 6. The rear end of the fourth buffer 32 abuts against the rib blade 62, and the front end of the fourth buffer 32 abuts against the rear bearing 502. The fourth buffer 32 effectively absorbs and reduces the vibration of the high-speed rotation of the fan 6, and has a good shock absorption effect.

[0035] In one embodiment, Figure 4 , Figure 5 and Figure 8 As shown, one of the two bearings 502 is sleeved with a fifth buffer (not numbered, the same below); in another embodiment, the outer sleeves of the two bearings 502 are sleeved with fifth buffers, and both are arranged in the shaft cylinder 45; in another embodiment, the outer sleeves of the two bearings 502 are sleeved with fifth buffers, the front bearing 502 is arranged in the shaft cylinder 45, and the rear bearing 502 is not arranged in the shaft cylinder 45, but is directly arranged in the rotor assembly. The fifth buffer effectively absorbs and reduces the vibration of the high-speed rotation of the bearing 502, and has a good shock absorption effect.

[0036] In one embodiment, Figures 3 to 5As shown, the fan 6 is a diagonal flow fan 6, the hub 60 radially increases and extends from the back to the front, and the hub 60 is arc-shaped. The diameter of the hub 60, the diameter of the housing 504, and the diameter of the inner ring portion 41 are less than 0.5 mm apart from each other, and in the axial direction, the housing 504 and the inner ring portion 41 are arranged closely spaced from front to back, and the hub 60 and the housing 504 are arranged closely. The rear end of the fan 6 does not extend backward beyond the rear end of the outer ring portion 40, and the fan 6 can be completely arranged in the four-layer structure of the outer ring portion 40, the first buffer 30, the casing 2, and the outer shell 1, which can effectively absorb and reduce the noise of the high-speed rotation of the fan 6. It should be understood that the channel between the inner ring portion 41 and the outer ring portion 40, and the channel between the side of the housing 504 and the outer ring portion 40 belong to the air duct of the portable fan. The fan 6 rotates, and the high-speed rotating blades 61 generate high-speed turbulence, which first flows through the bent and extended extension blades 43 to be initially combed, then flows through the first connecting blades 42 extending vertically forward to be combed again, and is guided to be ejected vertically forward to reduce kinetic energy loss and retain large air volume and high wind pressure.

[0037] In one embodiment, Figures 2 to 5 As shown, the air outlet portion 100 further includes an air inlet cover assembly 7 and an air outlet cover 8. The air inlet cover assembly 7 is fixed to the rear side of the casing 2 and is arranged at the rear side of the outer shell 1. The air outlet cover 8 is fixed to the front side of the casing 2 and is arranged at the front side of the outer shell 1. A first fixing portion 21 is provided at the front side of the casing 2, and a first matching portion 70 is provided on the outer side of the air outlet cover 8. The first fixing portion 21 and the first matching portion 70 are fixed in a corresponding manner. A second fixing portion 22 is provided at the rear side of the casing 2, and the air inlet cover assembly 7 is provided with a second matching portion 80. The second fixing portion 22 and the second matching portion 80 are fixed in a corresponding manner.

[0038] In one embodiment, Figures 2 to 5 As shown, the axial length of the shell 1 is 53.6-54mm, the rear end of the air inlet cover assembly 7 and the rear end of the hub 60 have a first spacing, the front end of the air outlet cover 8 and the front end of the hub 60 have a second spacing, and the first spacing is smaller than the second spacing, so that the airflow has sufficient air inlet distance and air outlet distance, so that the guide, rectification and pressurization structures are set in the air inlet distance and the air outlet distance, to ensure that the portable fan can increase the air volume, wind pressure and wind efficiency when the volume is limited.

[0039] In one embodiment, Figure 2 , Figure 3 , Figure 4 and Fig. 9As shown, the air inlet cover assembly 7 includes a rear shell 71, a fairing 72, a card shell 73 and a fastener 74, wherein the fastener 74 fixes the rear shell 71 and the card shell 73, and the rear shell 71, the card shell 73 and the fairing 72 are all located at the rear side of the wheel hub 60. The rear shell 71 is hollow, and a protrusion 710 and a first fixing hole 714 are provided at the front end of the rear shell 71. A card hole 721 is provided at the edge of the fairing 72, and the card hole 721 cooperates with the protrusion 710, and the fairing 72 covers the radial inner side of the rear shell 71. A second fixing hole 730 is provided at the rear end of the card shell 73, and the fastener 74 fixes the first fixing hole 714 and the second fixing hole 730, and the rear shell 71 and the card shell 73 clamp the fairing 72. The fairing 72 includes a plurality of air inlet through holes 720, and the thickness of the fairing 72 is 0.4 mm. The rear shell 71 includes a plane portion 711, a radial guide portion 712 and an axial guide portion 713 which are connected in sequence in a radial direction. The front end of the axial guide portion 713 is provided with a first step portion, the first step portion is provided with the protrusion 710, the edge of the fairing 72 is provided at the first step portion, and the clamping hole 721 cooperates with the protrusion 710. The rear end of the clamping shell 73 is provided corresponding to the first step portion to clamp the fairing 72 with the first step portion. The radial guide portion 712 is an arc surface, and is radially reduced from the plane portion 711 to the axial guide portion 713. The minimum inner diameter of the plane portion 711 is greater than the inner diameter of the axial guide portion 713. The inner side surface of the axial guide portion 713 extends forward substantially radially unchanged, and the inner side surface of the clamping shell 73 extends forward substantially radially unchanged. Of course, the inner side surface of the axial guide portion 713 and the inner side surface of the clamping shell 73 can also be radially gradually reduced and extended forward with a very small amplitude. The airflow is introduced from the arc-shaped radial guide portion 712, and the inner side surface of the axial guide portion 713 and the inner side surface of the housing 73 remain unchanged in radial direction, so that the airflow encounters less resistance and generates less turbulence, which can reduce the noise generated by airflow disturbance and help guide the airflow to flow forward. Under the condition that the overall volume of the portable fan is limited, the air volume and wind pressure are increased. At the same time, the fairing 72 with thickness and multiple air inlet holes 720 can organize the airflow well, so that the airflow can be more gathered and smoothly enter the portable fan.

[0040] In one embodiment, Figures 3 to 5, the minimum inner diameter of the flat portion 711 is R1, and the distance between the flat portion 711 and the rear end of the hub 60 is D1, where 0.5R < D1 < R1 < 2D1; the inner diameter of the axial flow guiding portion 713 is R2, and the distance between the rear end of the axial flow guiding portion 713 and the rear end of the hub 60 is D2, where 0.5R2 < D2 < R2 < 2D2. Excessive D1 and D2 will affect the layout distribution of the portable fan, while too small D1 and D2 will increase the intake loss of the portable fan and affect the performance of the portable fan. Therefore, by determining the numerical range of D1 and D2 corresponding to the values of R1 and R2, an excellent intake length can be designed, so that the resistance encountered by the air flow is smaller, the generated turbulence is less, the air volume, air pressure and air efficiency are improved, and the intake noise is reduced.

[0041] In one embodiment, as Figures 2 to 5 shown, the air outlet cover 8 includes an outer cover portion 81, an inner cover portion 82, and a plurality of second connecting blades 83 connecting the outer cover portion 81 and the inner cover portion 82. An air outlet of the portable fan is formed between the outer cover portion 81 and the inner cover portion 82. The second connecting blades 83 are axially spaced from the first connecting blades 42 by more than 3.5 mm. It should be understood that both the first connecting blades 42 and the second connecting blades 83 are stationary blades. Using double stationary blades instead of ordinary stationary blades, and there is also a gap between the double stationary blades. When the air flow passes through the double stationary blades, there will be enough buffer space to prevent a part of the air flow from rebounding and prevent the generation of turbulent flow, thereby reducing noise.

[0042] In one embodiment, as Figures 2 to 5 shown, the front end of the outer cover portion 81 is in front of the front end of the inner cover portion 82. The rear end of the inner cover portion 82 is open and the front end is sealed. A negative pressure surface 820 recessed backward is formed at the front end of the inner cover portion 82. The negative pressure surface 820 has the effects of wind gathering and air replenishment, making the wind blown out from the air outlet more concentrated and strong, and the blowing distance farther. The outer side surface of the inner cover portion 82 first extends radially and increases and then extends radially and decreases from the rear to the front. The part where the outer side surface of the inner cover portion 82 extends radially and increases is longer than the part where the outer side surface of the inner cover portion 82 extends radially and decreases. The diameter of the front end of the inner cover portion 82 is larger than the diameter of the rear end of the inner cover portion 82. The front end of the inner ring portion 41 is open, and a driving plate 52 is provided at the front end of the inner ring portion 41, which is convenient for installing the driving plate 52 and is beneficial for the wire to connect the driving plate 52. The rear end of the inner cover portion 82 is closely arranged adjacent to the front end of the inner ring portion 41 to shield and protect the driving plate 52 and reduce the entry of dust and impurities into the driving plate 52, affecting normal use.

[0043] In one embodiment, the thickness of the air hood 8 in the axial direction is 12.7-12.82 mm, which is conducive to enhancing wind pressure and making the air outlet distance longer. The front end of the housing 1 is protruding with a second step portion, and the front end of the outer cover portion 81 first expands and extends radially forward and outward, then bends and extends backward and wraps the second step portion, thereby strengthening the fit and fixation between the air hood 8 and the housing 1.

[0044] In one embodiment, Figure 1 , Figure 2 and Figure 4 As shown, the length of the housing 1 in the axial direction is 53.6-54 mm, at least part of the air inlet cover assembly 7 is arranged inside the housing 1, at least part of the air outlet cover 8 is arranged inside the housing 1, and the distance between the rear end of the air inlet cover assembly 7 and the front end of the air outlet cover 8 is 59.6-60 mm. The air outlet part 100 is compact in size and easy to carry.

[0045] In one embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8 As shown, the handheld part 200 is provided with a power supply 209 and a control panel 210, and the air outlet 100 and the handheld part 200 are fixed. The outer shell 1 is provided with a notch 10 corresponding to the handheld part 200, and a first fool-proof block 11 is provided in front of the inner side of the outer shell 1 corresponding to the notch 10. The inner cover part 82 and the inner ring part 41 are arranged adjacent to each other in the axial direction, and a fool-proof hole 23 is provided on the front side of the casing 2. One of the second connecting leaves 83 is provided with a wire groove 830, and the wire groove 830 radially passes through the inner cover part 82 and the outer cover part 81, and a second fool-proof block 810 is provided on the outer side of the outer cover part 81 corresponding to the wire groove 830. The sleeve 2 is inserted into the outer shell 1 from back to front, the first anti-foolproof block 11 and the second anti-foolproof block 810 are both matched with the anti-foolproof hole 23, the missing groove 10, part of the anti-foolproof hole 23 and the wire groove 830 are connected, and the wire passes through the missing groove 10, the anti-foolproof hole 23 and the wire groove 830 to electrically connect the control board 210 and the drive board 52.

[0046] In one embodiment, Figures 1 to 4As shown, the housing of the handheld part 200 includes a left shell 201 and a right shell 202 that match each other, and the air outlet 100 also includes a mounting frame 9 protruding from the outer surface of the housing 1. A connecting frame 203 is provided inside the handheld part 200, and the connecting frame 203 includes a connecting top plate 204, and a front mounting portion 205, a rear mounting portion 206, a left mounting portion 207 and a right mounting portion 208 that extend downward from four sides of the connecting top plate 204 respectively. The connecting top plate 204 is fixedly connected with the mounting frame 9, the left shell 201 is fixedly connected with the left mounting portion 207, the right shell 202 is fixedly connected with the right mounting portion 208, and the boss of the right shell 202 is inserted into the front mounting portion 205 and the rear mounting portion 206, and the control panel 210 is clamped at the bottom of the connecting frame 203. The handheld part 200 further includes a switch 211 electrically connected to the front side of the control panel 210, an interface 212 electrically connected to the rear side of the control panel 210, and an anti-mistaken touch device 213 electrically connected to the side of the control panel 210. The switch 211 is exposed to the front side of the handheld part 200, the interface 212 is provided on the rear mounting part 206 and is exposed to the rear side of the handheld part 200, and the anti-mistaken touch device 213 is exposed to the left or right side of the handheld part 200. The power supply 209 is provided below the control panel 210 and is electrically connected to the control panel 210. The power supply 209 can directly supply power to the motor 5 to drive the fan 6 to rotate without connecting to an external power source.

[0047] In one embodiment, a sixth buffer member (not shown, the same below) is provided on the rear side of the negative pressure surface 820 , and the sixth buffer member is used for pressurizing and connecting the drive plate 52 and the control plate 210 , and can absorb the noise generated by the operation of the motor 5 .

[0048] It should be understood that the first buffer 31, the second buffer, the third buffer 32, the fourth buffer 33, the fifth buffer and the sixth buffer are all elastic, but the specific material and form can be selected from existing elastic materials, for example, the first buffer 31 can be a silicone material or a foam material; the second buffer, the third buffer 32, the fourth buffer 33 and the fifth buffer can be a spring material or a silicone material; the sixth buffer can be a silicone material or a foam material. The specific elastic material is not limited to the above examples, as long as it is elastic and can provide a buffering and shock absorbing effect.

[0049] The above detailed description is only an explanation of the preferred embodiment of the present application, and does not limit the patent scope of the present application. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.

Claims

1. A motor for a portable rotating device, which is a high-speed three-phase motor, characterized in that: include: The cylinder body comprises an outer ring portion, an inner ring portion and a plurality of connecting leaves connecting the outer ring portion and the inner ring portion, wherein a base plate is formed inside the inner ring portion, a hollow shaft cylinder protrudes backwards from the base plate, and a first buffer is arranged outside the outer ring portion; A driving plate, mounted on the front end of the inner ring portion; The stator assembly and the rotor assembly, the driving plate is electrically connected to the stator assembly and drives the rotor assembly to rotate, the stator assembly and the rotor assembly are nested and fixed, and are fixed to the shaft cylinder from the rear.

2. The motor of the portable rotating device according to claim 1, characterized in that: The cylinder body has air intake at the rear end and outlet at the front end, the inner ring portion is shorter than the outer ring portion, the inner ring portion is located on the inner side corresponding to the front end portion of the outer ring portion, and the front end of the inner ring portion extends forward beyond the front end of the outer ring portion; a receiving portion and a buckle are provided at the front end of the inner ring portion, the receiving portion is used to receive the drive plate, and the buckle is used to buckle the drive plate; the base plate is provided with a wire passing notch, and the wire passes through the wire passing notch to electrically connect the drive plate and the stator assembly.

3. The motor of the portable rotating device according to claim 1, characterized in that: The rotor assembly includes a rotating shaft, a bearing and a limit member, the bearing, the limit member and the stator assembly are all inserted outside the rotating shaft, and the rotating shaft is inserted into the shaft cylinder from back to front; there are two bearings, one of which is clamped outside the rotating shaft and inside the shaft cylinder from back to front, and the other bearing is clamped outside the rotating shaft and inside the shaft cylinder from front to back, and the shaft cylinder is provided with a second buffer member between the two bearings, and the inner diameter of the shaft cylinder corresponding to the second buffer member is smaller than the inner diameter of the shaft cylinder corresponding to the bearing; a groove is provided radially outside the front part of the rotating shaft, and the limit member is clamped in the groove from front to back, and a third buffer member is provided between the front bearing and the limit member.

4. The motor of the portable rotating device according to claim 3, characterized in that: The rotor assembly also includes a casing, which is open toward the front and includes a rear portion and a side portion. The magnetic ring is fixed to the inner side of the casing side portion, and the stator assembly is fixed to the inner side of the magnetic ring. The shaft cylinder extends backward beyond the rear end of the inner ring portion but does not extend beyond the rear end of the outer ring portion. In the radial direction, the stator assembly, the magnetic ring and the side portion of the casing are sleeved on the outer side of the shaft cylinder, and the front end of the casing side portion is closely spaced from the inner ring portion in the axial direction.

5. The motor of the portable rotating device according to claim 4, characterized in that: The rotor assembly also includes a fan, which is fixed to the rear end of the rotating shaft, and the front end of the fan is axially adjacent to the rear end of the casing; the fan includes a hub and a plurality of fan blades arranged around the outer side of the hub, and rib blades are arranged on the inner side of the hub. A notch is penetrated through the rear part of the casing, and a fourth buffer member passes through the notch at the rear part of the casing and is arranged between the bearing at the rear and the rib blades of the fan, the rear end of the fourth buffer member abuts against the rib blades, and the front end of the fourth buffer member abuts against the bearing at the rear; a fifth buffer member is arranged on the bearing outer sleeve.

6. The motor of the portable rotating device according to claim 5, characterized in that: The fan is a diagonal flow fan, comprising a hub and a plurality of blades arranged around the outside of the hub, the hub radially increasing and extending from back to front, and the hub is arc-shaped; the difference between any two of the diameter of the hub, the diameter of the casing and the diameter of the inner ring portion is less than 0.5 mm.

7. The motor of the portable rotating device according to claim 4, characterized in that: The distance between the side of the casing and the rear end of the inner ring part is smaller than the distance between the rear of the casing and the rear bearing; the distance between the side of the casing and the rear end of the inner ring part is smaller than the distance between the front end of the rotating shaft and the rear end of the driving plate.

8. The motor of the portable rotating device according to claim 4, characterized in that: The cylinder also includes a plurality of extension leaves, which correspond to the plurality of connecting leaves one by one, and are formed by extending backward from the connecting leaves; the connecting leaves extend vertically forward, and the extension leaves are curved and extended in an arc shape, and the plurality of extension leaves surround the outside of the side of the casing.

9. The motor of the portable rotating device according to claim 1, characterized in that: The outer diameter of the cylinder is 23.71-24.05 mm, and the length of the cylinder is 30-33.05 mm.

10. A handheld fan, characterized in that: The portable rotating device comprises a hand-held portion and an air outlet portion, wherein the air outlet portion is provided with a motor of the portable rotating device as claimed in any one of claims 1 to 9.

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