High-speed motor

Abstract

The utility model provides a high-speed motor, and the motor comprises a cylinder which comprises an outer ring part, an inner ring part, and a plurality of connecting blades connected with the outer ring part and the inner ring part, a substrate is formed in the inner ring part, and a hollow shaft cylinder protrudes and extends backwards from the substrate; 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, the rotor assembly and the shaft barrel are fixed in a nested mode; wherein the rotor assembly comprises a rotating shaft, a bearing and a magnetic ring, the rotating shaft extends into the shaft barrel, the bearing is arranged outside the rotating shaft, a buffer sleeve is arranged outside the bearing, and the magnetic ring is arranged on the outer side of the stator assembly. According to the high-speed motor, the buffering sleeve is arranged outside the bearing, and the buffering sleeve can fully absorb vibration generated by the bearing and noise generated by the vibration, so that the high-speed motor can continuously and stably work.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a high-speed motor with good vibration reduction effect. Background Art

[0002] At present, the existing high-speed fan motors on the market have very high speeds when they are working. In order to ensure continuous and stable high-speed rotation, the dynamic balance of the rotor inside the motor is also very high. However, in the existing high-speed fan motors, the rotor vibrates greatly under ultra-high-speed rotation, and the noise generated is also loud. Long-term vibration will also damage the bearings, thereby greatly shortening the life of the motor.

[0003] Moreover, when the motor falls or collides, the bearings are susceptible to strong impact and vibration, which may cause severe damage to the bearings and make the motor unable to work normally. Summary of the invention

[0004] In view of this, the present application provides a high-speed motor. By arranging the buffer sleeve outside the bearing, the buffer sleeve can fully absorb the vibration generated by the bearing and the noise generated by the vibration, so that the high-speed motor can work continuously and stably.

[0005] The present application provides a high-speed motor, comprising a cylinder, including 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, and a hollow shaft cylinder protrudes and extends backward from the base plate; a drive plate installed at the front end of the inner ring portion; a stator assembly and a rotor assembly, wherein the drive plate is electrically connected to the stator assembly and drives the rotor assembly to rotate, and the stator assembly, the rotor assembly and the shaft cylinder are nested and fixed; wherein the rotor assembly comprises a rotating shaft, a bearing and a magnetic ring, wherein the rotating shaft extends into the shaft cylinder, the bearing is provided outside the rotating shaft, a buffer sleeve is provided outside the bearing, and the magnetic ring is provided outside the stator assembly.

[0006] Furthermore, the bearing includes a first bearing and a second bearing, the first bearing and the second bearing are both arranged outside the rotating shaft, and the first bearing is located in front of the second bearing, and at least one of the first bearing and the second bearing is provided with the buffer sleeve.

[0007] Furthermore, the buffer sleeve is formed with a groove, and the groove is formed on one or more of the radial outer side, radial inner side, axial outer side, and axial inner side of the buffer sleeve; the outer diameter of the buffer sleeve is 5.96 mm, the depth of the groove is 0.1 mm, the width of the groove is 0.7 mm, and the groove is arranged on the buffer sleeve.

[0008] Furthermore, the rotor assembly also includes a casing, which is open to the front, and includes a first side wall, a second side wall and a rear wall, the first side wall is located radially inside the second side wall, and the first side wall is shorter than the second side wall, the rear wall connects the first side wall and the second side wall, the first side wall is fixed outside the rotating shaft, and the second side wall is outside the magnetic ring; a first step portion is formed on the outer side surface of the shaft cylinder, and the stator assembly is arranged outside the shaft cylinder and presses forward against the first step portion.

[0009] Furthermore, the second side wall and the inner ring portion are axially adjacent to each other, the first side wall and the second bearing are axially adjacent to each other, and a distance between the second side wall and the inner ring portion is smaller than a distance between the first side wall and the second bearing.

[0010] Furthermore, the spacing between the first side wall and the second bearing is 0.8 mm, and the spacing between the second side wall and the inner ring portion is 0.7 mm; a buffer pad is provided at the front end of the second side wall and / or the rear end of the inner ring portion, and the thickness of the buffer pad is 0.3 mm.

[0011] Furthermore, the buffer sleeves are both provided outside the first bearing and the second bearing, the first bearing is provided outside the first buffer sleeve, and the second bearing is provided outside the second buffer sleeve, the first bearing and the second bearing respectively have an inner wall, an outer wall, and balls arranged between the inner wall and the outer wall, and the rotating shaft is passed through the inner walls of the first bearing and the second bearing; a second step portion is formed on the inner side of the shaft tube, the first bearing and the first buffer sleeve are abutted against the second step portion from front to back, the first buffer sleeve covers the radial outer side and rear side of the outer wall of the first bearing, the second bearing and the second buffer sleeve are abutted against the rear end of the shaft tube from back to front, the second buffer sleeve covers the radial outer side and front side of the outer wall of the second bearing, and part of the stator assembly is arranged outside the second buffer sleeve.

[0012] Furthermore, a fan blade is fixedly provided at the rear end of the rotating shaft, and the fan blade includes a hub, and a plurality of blades arranged around the outer side of the hub at intervals. A shaft column is also provided on the inner side of the hub, and the shaft column is fixed outside the rotating shaft, and a plurality of ribs connect the shaft column and the hub; a notch is penetrated by the rear wall, and an elastic member passes through the notch of the rear wall, and the two ends of the elastic member are respectively abutted against the ribs and the second bearing.

[0013] Furthermore, the diameter of one end of the elastic member abutting against the rib leaf is larger than the diameter of the elastic member abutting against the second bearing, the maximum outer diameter of the elastic member is 7-7.8 mm, and the minimum inner diameter of the elastic member is 2.05 mm.

[0014] Furthermore, a distance between the second side wall and the inner ring portion is smaller than a distance between the rotating shaft and the driving plate.

[0015] Compared with the prior art, the high-speed motor of the present application has the following beneficial effects: by arranging the buffer sleeve outside the bearing, the buffer sleeve can fully absorb the vibration generated by the bearing and the noise generated by the vibration, so that the high-speed motor can work continuously and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional schematic diagram of the portable fan of the present application;

[0017] Figure 2 is a three-dimensional exploded view of the portable fan of the present application;

[0018] Figure 3 is a cross-sectional view of the portable fan of the present application;

[0019] Figure 4 yes Figure 3 A magnified view of part A;

[0020] Figure 5 It is a three-dimensional schematic diagram of the cylinder of the present application. DETAILED DESCRIPTION

[0021] 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.

[0022] It should be noted that when an element is considered to be “connected to” another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0023] In this application, descriptions such as “first”, “second”, etc. are only used for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0024] In the description of the present application, the terms "front", "back", "left", "right", "up", "down", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0025] In one embodiment, Figures 1 to 3As shown, the high-speed motor of the present application is used in a portable fan. The portable fan comprises an air outlet 100 and a hand-held part 200. The air outlet 100 is used to discharge air, and the hand-held part 200 is used for a user to hold the hand-held fan for easy use by the user.

[0026] In one embodiment, Figure 2 and Figure 3 As shown, the air outlet 100 includes a housing 1, a casing 2, a buffer 30 and the high-speed motor from the outside to the inside. The high-speed motor includes a barrel 4, a driving plate 55, a stator assembly 54, a rotor assembly and a fan blade 6. The high-speed motor can provide sufficient power and speed to ensure the wind force of the portable fan.

[0027] The buffer 30 is arranged outside the cylinder 4, the casing 2 is arranged outside the buffer 30, and the outer shell 1 is arranged outside the casing 2. By setting the cylinder 4, the buffer 30, the casing 2 and the outer shell 1 as a four-layer structure, the layers are fixed and the overall structure is stable. When using the high-speed motor, the overall vibration reduction effect is ensured to be good. The buffer 30 is arranged outside the cylinder 4, and the buffer 30 absorbs and reduces the vibration caused by the high-speed motor in time, so that the portable fan can continue to rotate at a high speed stably.

[0028] In one embodiment, Figure 2 and Figure 3 As shown, the buffer member 30 is used as an isolation and buffer interface between the barrel 4 and the housing 2. In one embodiment, the 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 buffer member 30. In addition, the buffer member 30 may only cover part of the outer surface of the barrel 4, or may cover the entire outer surface of the barrel 4, or may cover the front end face and the rear end face of the barrel 4, but is not limited thereto.

[0029] In one embodiment, Figure 3 and Figure 5 As shown, the cylinder 4 includes an outer ring portion 40, an inner ring portion 41, and a plurality of 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, 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 formed in the inner ring portion 41, and a hollow shaft cylinder 45 protrudes backward from the base plate 44 and extends backward. The shaft cylinder 45 exceeds the rear end of the inner ring portion 41, but does not exceed the rear end of the outer ring portion 40. The stator assembly 54, the rotor assembly and the shaft cylinder 45 are nested and fixed.

[0030] In one embodiment, Figure 3and Figure 4 As shown, a first step portion 451 is formed on the outer side of the shaft cylinder 45, and the stator assembly 54 is arranged outside the shaft cylinder 45 and abuts against the first step portion 451. The rotor assembly includes a rotating shaft 50, a bearing 51 and a magnetic ring 52. The rotating shaft 50 extends into the shaft cylinder 45, the bearing 51 is arranged outside the rotating shaft 50, the buffer sleeve 31 is arranged outside the bearing 51, and the magnetic ring 52 is arranged outside the stator assembly 54. By arranging the buffer sleeve 31 outside the bearing 51, the buffer sleeve 31 can fully absorb the vibration generated by the bearing 51 and the noise generated by the vibration, so that the high-speed motor can work continuously and stably.

[0031] In one embodiment, Figure 2 , Figure 3 and Figure 5 As shown, 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 55, and the buckle 47 is used to buckle and fix the drive plate 55. The base plate 44 is provided with a wire passing opening, and the wire passes through the wire passing opening to electrically connect the drive plate 55 and the stator assembly 54. The drive plate 55 is electrically connected to the stator assembly 54 and drives the rotor assembly to rotate.

[0032] In one embodiment, Figure 3 and Figure 4 As shown, the bearing 51 is provided with two, including a first bearing 511 and a second bearing 512, and the first bearing 511 and the second bearing 512 are both provided outside the rotating shaft 50. The first bearing 511 is located in front of the second bearing 512, and at least one of the first bearing 511 and the second bearing 512 is provided with the buffer sleeve 31. In this embodiment, the buffer sleeve 31 is provided outside the first bearing 511 and the second bearing 512. Of course, in other embodiments, the buffer sleeve 31 may be provided outside the first bearing 511, and the buffer sleeve 31 may not be provided outside the second bearing 512; or the buffer sleeve 31 may not be provided outside the first bearing 511, and the buffer sleeve 31 may be provided outside the second bearing 512.

[0033] In one embodiment, Figure 3 and Figure 4As shown, the buffer sleeve 31 is formed with a groove 313, and the groove 313 is formed on one or more of the radial outer side, radial inner side, axial outer side, and axial inner side of the buffer sleeve 31. In this embodiment, the groove 313 is formed on the radial outer side of the buffer sleeve 31, and the groove 313 is arranged around the buffer sleeve 31. The setting of the groove 313 can give the buffer sleeve 31 some deformation space, so that the buffer sleeve 31 has a stronger buffering absorption capacity. The outer diameter of the buffer sleeve 31 is 5.96 mm (millimeter, the same below), the depth of the groove 313 is 0.1 mm, and the width of the groove 313 is 0.7 mm.

[0034] In one embodiment, the first bearing 511 and the second bearing 512 are both provided with the buffer sleeve 31. The first bearing 511 is provided with the first buffer sleeve 311, and the second bearing 512 is provided with the second buffer sleeve 312. The first bearing 511 and the second bearing 512 respectively have an inner wall, an outer wall, and a ball disposed between the inner wall and the outer wall, and the rotating shaft 50 is penetrated through the inner walls of the first bearing 511 and the second bearing 512. A second step portion 452 is formed on the inner side of the shaft cylinder 45, and the first bearing 511 and the first buffer sleeve 311 are abutted against the second step portion 452 from front to back, and the first buffer sleeve 311 covers the radial outer side and rear side of the outer wall of the first bearing 511. The second bearing 512 and the second buffer sleeve 312 are abutted against the rear end of the shaft cylinder 45 from back to front, and the second buffer sleeve 312 covers the radial outer side and front side of the outer wall of the second bearing 512, and part of the stator assembly 54 is disposed outside the second buffer sleeve 312.

[0035] In one embodiment, Figure 3 and Figure 4 As shown, the rotor assembly further includes a housing 53. The housing 53 is open toward the front, and includes a first side wall 531, a second side wall 532, and a rear wall 533. The first side wall 531 is located radially inward of the second side wall 532, and the first side wall 531 is shorter than the second side wall 532, and the rear wall 533 connects the first side wall 531 and the second side wall 532. The first side wall 531 is fixedly arranged outside the rotating shaft 50, and the second side wall 532 is arranged outside the magnetic ring 52.

[0036] In one embodiment, Figure 3 and Figure 4As shown, the second side wall 532 and the inner ring portion 41 are adjacently arranged in the axial direction, and the first side wall 531 and the second bearing 512 are adjacently arranged in the axial direction. The spacing between the second side wall 532 and the inner ring portion 41 is smaller than the spacing between the first side wall 531 and the second bearing 512. In this embodiment, the spacing between the first side wall 531 and the second bearing 512 is 0.8 mm, and the spacing between the second side wall 532 and the inner ring portion 41 is 0.7 mm, which is of course not limited thereto.

[0037] In one embodiment, Figure 3 and Figure 4 As shown, the front end of the second side wall 532 and / or the rear end of the inner ring portion 41 is provided with a buffer pad 33. In this embodiment, the rear end of the inner ring portion 41 is provided with a buffer pad 33, and the buffer pad 33 is provided in plurality and distributed at the rear end of the inner ring portion 41, so that even when the high-speed motor falls or is impacted by the outside world, the front end of the second side wall 532 can be prevented from impacting and vibrating the rear end of the inner ring portion 41. The thickness of the buffer pad 33 is 0.3 mm, which can well absorb and reduce the impact vibration, but it is not limited to this. It should be understood that the front end of the second side wall 532 can also be provided with the buffer pad 33, and the buffer pad 33 can be a circle arranged around the front end of the second side wall 532 and / or the rear end of the inner ring portion 41. In addition, the spacing between the second side wall 532 and the inner ring portion 41 is smaller than the spacing between the rotating shaft 50 and the driving plate 55. In this way, even when the high-speed motor falls or is impacted by other outside world, the front end of the rotating shaft 50 will not impact and damage the driving plate 55.

[0038] In one embodiment, Figures 3 to 5 As 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 barrel 4 is small in size, 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, and the plurality of extension leaves 43 correspond to the plurality of connecting leaves 42 one by one, and the extension leaves 43 are formed by extending backward from the connecting leaves 42. The connecting leaves 42 extend vertically forward, and the extension leaves 43 are curved and extended in an arc shape, and the plurality of extension leaves 43 surround the outside of the second side wall 532.

[0039] In one embodiment, Figures 2 to 4As shown, the rear end of the rotating shaft 50 is also fixed with a fan blade 6. The front end of the fan blade 6 is arranged in close proximity to the rear wall 533 of the housing 53 in the axial direction. The fan blade 6 is coaxially arranged with the housing 53, the magnetic ring 52, and the bearing 51, and the fan blade 6 and the housing 53 are arranged in close proximity, and there is no need to set up a transmission device between the housing 53 and the fan blade 6, which effectively improves the transmission efficiency of the fan blade 6. The fan blade 6 includes a hub 60, and a plurality of blades 61 arranged around the outer side of the hub 60 at intervals. A shaft column 62 is also provided on the inner side of the hub 60, and the shaft column 62 is fixed outside the rotating shaft 50, and a plurality of ribs 63 connect the shaft column 62 and the hub 60. The rear wall 533 is penetrated with a notch, and the elastic member 32 passes through the notch of the rear wall 533, and the two ends of the elastic member 32 are respectively against the ribs 63 and the second bearing 512. The diameter of one end of the elastic member 32 abutting against the rib leaf 63 is larger than the diameter of the elastic member 32 abutting against the second bearing 512 . The maximum outer diameter of the elastic member 32 is 7-7.8 mm, and the minimum inner diameter of the elastic member 32 is 2.05 mm.

[0040] In one embodiment, Figure 2 and Figure 3 As shown, the fan blade 6 is a diagonal flow fan blade, 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 53 and the diameter of the inner ring portion 41 differ by less than 0.5 mm, and in the axial direction, the housing 53 and the inner ring portion 41 are arranged adjacent to each other in front and back intervals, and the hub 60 and the housing 53 are arranged in close proximity. The rear end of the fan blade 6 does not extend backward beyond the rear end of the outer ring portion 40, and the fan can be completely arranged in the four-layer structure of the outer ring portion 40, the buffer 30, the casing 2 and the outer shell 1, which can effectively absorb and reduce the noise generated by the high-speed rotation of the fan blade 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 second side wall 532 and the outer ring portion 40 belong to the air duct of the portable fan. The fan blades 6 rotate, and the high-speed turbulence generated by the high-speed rotating fan blades 6 first flows through the curved extension blades 43 to be initially combed, then flows through the connecting blades 42 extending vertically forward to be combed again, and is guided to be sprayed vertically forward to reduce kinetic energy loss and retain large air volume and high wind pressure.

[0041] In one embodiment, Figures 1 to 3 As shown, the air outlet 100 further includes an air inlet cover 7 and an air outlet cover 8. The air inlet cover 7 is fixed to the rear side of the casing 2 and is arranged on 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 on the front side of the outer shell 1.

[0042] In one embodiment, Figure 2 and Figure 3 As shown, a power supply 201 and a control board 202 are provided in the handheld part 200, and the air outlet 100 and the handheld part 200 are fixed. The control board 202 is electrically connected to the drive board 55 through a wire. The power supply 201 is provided below the control board 202, and the power supply 201 is electrically connected to the control board 202. The power supply 201 can directly supply power to the high-speed motor to drive the fan blade 6 to rotate without connecting to an external power supply.

[0043] It should be understood that the buffer 30, the buffer sleeve 31, and the elastic member 32 all have the ability to be elastically deformed, but the specific material, form, and deformation ability can be selected from existing elastic materials. For example, the buffer 30 can be a silicone material or a foam material, and the buffer sleeve 31 can be a silicone material or a foam material; the elastic member 32 can be a spring material or a silicone material. The specific elastic material is not limited to the above examples, as long as it has the ability to be elastically deformed and can provide a buffering and shock absorbing effect.

[0044] 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 high-speed 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 in the inner ring portion, and a hollow shaft cylinder protrudes backwards from the base plate; A driving plate, mounted on the front end of the inner ring portion; A stator assembly and a rotor assembly, wherein the driving plate is electrically connected to the stator assembly and drives the rotor assembly to rotate, and the stator assembly, the rotor assembly and the shaft cylinder are nested and fixed; Wherein, the rotor assembly comprises a rotating shaft, a bearing and a magnetic ring, the rotating shaft extends into the shaft cylinder, the bearing is arranged outside the rotating shaft, a buffer sleeve is arranged outside the bearing, and the magnetic ring is arranged outside the stator assembly; The rotor assembly also includes a casing, which is open to the front and includes a second side wall, which is arranged outside the magnetic ring; the distance between the second side wall and the inner ring part is smaller than the distance between the rotating shaft and the driving plate.

2. The high-speed motor according to claim 1, characterized in that: The bearing comprises a first bearing and a second bearing, wherein the first bearing and the second bearing are both arranged outside the rotating shaft, and the first bearing is located in front of the second bearing, and at least one of the first bearing and the second bearing is provided with the buffer sleeve.

3. The high-speed motor according to claim 2, characterized in that: The buffer sleeve is formed with a groove, and the groove is formed on one or more of the radial outer side, radial inner side, axial outer side, and axial inner side of the buffer sleeve; the outer diameter of the buffer sleeve is 5.96 mm, the depth of the groove is 0.1 mm, the width of the groove is 0.7 mm, and the groove is arranged on the buffer sleeve.

4. The high-speed motor according to claim 2, characterized in that: The casing includes a first side wall, a second side wall and a rear wall, the first side wall is located radially inward of the second side wall, and the first side wall is shorter than the second side wall, the rear wall connects the first side wall and the second side wall, the first side wall is fixed outside the rotating shaft; a first step portion is formed on the outer side surface of the shaft cylinder, the stator assembly is arranged outside the shaft cylinder, and presses forward against the first step portion.

5. The high-speed motor according to claim 4, characterized in that: The second side wall and the inner ring portion are axially adjacent to each other, the first side wall and the second bearing are axially adjacent to each other, and a distance between the second side wall and the inner ring portion is smaller than a distance between the first side wall and the second bearing.

6. The high-speed motor according to claim 5, characterized in that: The distance between the first side wall and the second bearing is 0.8 mm, and the distance between the second side wall and the inner ring portion is 0.7 mm; a buffer pad is provided at the front end of the second side wall and / or the rear end of the inner ring portion, and the thickness of the buffer pad is 0.3 mm.

7. The high-speed motor according to claim 5, characterized in that: The buffer sleeve is provided outside the first bearing and the second bearing. The first bearing is provided with a first buffer sleeve outside the first bearing, and the second bearing is provided with a second buffer sleeve outside the second bearing. The first bearing and the second bearing respectively have an inner wall, an outer wall, and a ball disposed between the inner wall and the outer wall, and the rotating shaft is passed through the inner walls of the first bearing and the second bearing; a second step portion is formed on the inner side of the shaft tube, the first bearing and the first buffer sleeve are abutted against the second step portion from front to back, the first buffer sleeve covers the radial outer side and rear side of the outer wall of the first bearing, the second bearing and the second buffer sleeve are abutted against the rear end of the shaft tube from back to front, the second buffer sleeve covers the radial outer side and front side of the outer wall of the second bearing, and part of the stator assembly is arranged outside the second buffer sleeve.

8. The high-speed motor according to claim 4, characterized in that: A fan blade is also fixedly provided at the rear end of the rotating shaft, and the fan blade includes a hub and a plurality of blades arranged around the outer side of the hub at intervals. A shaft column is also provided on the inner side of the hub, and the shaft column is fixed outside the rotating shaft, and a plurality of ribs connect the shaft column and the hub; a notch is passed through the rear wall, and an elastic member passes through the notch of the rear wall, and two ends of the elastic member are respectively abutted against the ribs and the second bearing.

9. The high-speed motor according to claim 8, characterized in that: The diameter of one end of the elastic member abutting against the rib leaf is larger than the diameter of the elastic member abutting against the second bearing. The maximum outer diameter of the elastic member is 7-7.8 mm, and the minimum inner diameter of the elastic member is 2.05 mm.

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