CN215120432U - Rotating shaft limiting assembly and motor - Google Patents
Rotating shaft limiting assembly and motor Download PDFInfo
- Publication number
- CN215120432U CN215120432U CN202121298209.2U CN202121298209U CN215120432U CN 215120432 U CN215120432 U CN 215120432U CN 202121298209 U CN202121298209 U CN 202121298209U CN 215120432 U CN215120432 U CN 215120432U
- Authority
- CN
- China
- Prior art keywords
- magnet
- pivot
- sleeve
- shaft
- rotating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a spacing subassembly of pivot and motor relates to the motor field. The conventional air blower usually uses a radial sliding bearing as a radial supporting part of a rotating shaft, but the axial positioning of the rotating shaft cannot be considered, and the rotating shaft easily generates axial play in an inner hole of the radial bearing, so that the vibration and the noise are increased. The utility model discloses a be equipped with the spacing subassembly of pivot in the pivot of motor, the spacing subassembly of pivot includes axle sleeve, magnet and magnetic ring, the sleeve is equipped with cylindrical axle sleeve chamber and is located the cylindrical magnetic cavity of axle sleeve chamber below, the axle sleeve inlays in the axle sleeve chamber, the axle sleeve overcoat in the pivot and with pivot normal running fit, be equipped with magnet in the magnetic cavity, be equipped with the magnetic ring between magnet periphery and the magnetic cavity inner wall, magnetic ring, magnet and the coaxial core line of pivot, be equipped with wear-resisting gasket between pivot axle head portion and the magnet. Through the magnetic attraction effect of the magnet on the end part of the rotating shaft, the motor noise generated by the axial collision vibration of the rotating shaft and the shaft end part is avoided, and the vibration of the motor is reduced.
Description
Technical Field
The utility model relates to a motor field especially relates to a spacing subassembly of pivot and motor.
Background
The motor is widely applied to household appliances, and the motor and related products which are visible everywhere bring convenience to the life of people and bring problems, so that the life quality of people is influenced.
In order to achieve the purpose of high-speed operation, low vibration and low noise, the blower usually uses a radial sliding bearing as a radial supporting component of a rotating shaft, but the axial positioning of the rotating shaft cannot be considered, and the rotating shaft is easy to generate axial play in an inner hole of the radial bearing, so that the vibration and the noise are increased.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model and the technical task who provides are perfect and improve prior art scheme, provide a spacing subassembly of pivot and motor to realize that the axial of pivot is spacing for the purpose. Therefore, the utility model adopts the following technical scheme.
The spacing subassembly of pivot, including axle sleeve, magnet and magnetic ring, the sleeve be equipped with cylindrical axle sleeve chamber and be located the cylindrical magnetism chamber that the diameter of axle sleeve chamber below is less than the axle sleeve chamber, the axle sleeve inlay in the axle sleeve chamber, the axle sleeve overcoat in the pivot and with pivot normal running fit, the magnetism intracavity be equipped with magnet, be equipped with the magnetic ring between magnet periphery and the magnetism intracavity wall, magnetic ring, magnet and the coaxial axial lead of pivot, be equipped with wear-resisting gasket between pivot axle head portion and the magnet. Through the effect of magnetism of magnet to the pivot tip, the pivot can not take place the axial float when the operation, and it is spacing effectively to realize the axial of pivot, avoids the axial collision vibration production noise of pivot and axle head spare part.
As a preferable technical means: the magnet adopts a Halbach array structure, the upper surface of the magnet is of one polarity, the peripheral surface of the magnet is of one polarity different from that of the upper surface, and the lower surface of the magnet is non-polar. The magnetic flux of the magnet is along a closed loop of the upper surface of the magnet, the rotating shaft, the magnetic conduction ring and the peripheral surface of the magnet, so that the magnet generates attraction force on the rotating shaft.
As a preferable technical means: the middle upper part of the shaft sleeve is in interference fit with the sleeve, and a gap is arranged between the lower part of the shaft sleeve and the sleeve. The part through the axle sleeve periphery and sleeve interference fit, the rest is contactless, can effectively reduce the assembly degree of difficulty of axle sleeve.
As a preferable technical means: the height of the magnetic conduction ring is lower than that of the magnetic cavity. The upper end part of the magnetic conduction ring is prevented from touching the lower end surface of the shaft sleeve, and the assembly is easier.
As a preferable technical means: the height of the magnetic conduction ring is higher than that of the magnet. The magnetic flux is prevented from forming a short circuit between the upper surface of the magnet and the magnetic conduction ring, and the magnetic flux leakage is reduced.
As a preferable technical means: the shaft end part of the rotating shaft axially extends out of the lower end of the shaft sleeve and extends into the upper part of the magnetic cavity, and the end face of the shaft end part of the rotating shaft is provided with an arc chamfer. The friction contact area between the end part of the rotating shaft and the gasket can be reduced, the friction resistance is reduced, and the friction temperature rise is reduced.
As a preferable technical means: the upper end of the sleeve is provided with a cylindrical step hole with the diameter larger than that of the shaft sleeve cavity. The processing precision of the axial length of the shaft sleeve can be effectively reduced, the shaft sleeve is prevented from extending out of the upper end of the sleeve due to overlong, and the end part of the shaft sleeve is prevented from touching other parts.
As a preferable technical means: the surface of the magnetic conductive ring is coated with an oil-proof agent, and the surface of the magnet is coated with an oil-proof agent. Provides the protection function for the magnetic conduction ring and the magnet.
The utility model provides a motor, includes rotor subassembly and stator module, the rotor subassembly is equipped with the pivot be equipped with the spacing subassembly of pivot, stator module connect in the sleeve periphery of the spacing subassembly of pivot to it is rotatory to drive the rotor subassembly. The motor noise generated by the axial collision vibration of the rotating shaft and the shaft end part is avoided, and the vibration of the motor is reduced.
Has the advantages that: through the magnetic attraction effect of the magnet on the end part of the rotating shaft, when the motor operates, the rotating shaft cannot generate axial float, the axial limiting of the rotating shaft is effectively realized, the noise generated by the axial collision vibration of the rotating shaft and shaft end parts of the traditional motor is avoided, the vibration is reduced, and a better mute effect is obtained.
Drawings
Fig. 1 is a schematic radial sectional structural view of the present invention.
Fig. 2 is a schematic radial sectional structure view of the sleeve according to the present invention.
In the figure: 1-shaft sleeve; 2-a rotating shaft; 3-a sleeve; 4-a magnet; 5-a magnetic conductive ring; 6-a gasket; 301-a sleeve cavity; 302-a magnetic cavity; 303-stepped bore.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1-2, the rotating shaft limiting assembly, including a shaft sleeve 1, a sleeve 3, a magnet 4 and a magnetic conductive ring 5, the sleeve 3 is provided with a cylindrical shaft sleeve cavity 301 and a cylindrical magnetic cavity 302 with a diameter smaller than that of the shaft sleeve cavity 301 and located below the shaft sleeve cavity 301, the shaft sleeve 1 is embedded in the shaft sleeve cavity 301, the shaft sleeve 1 is externally sleeved on the rotating shaft 2 and is in running fit with the rotating shaft 2, the magnet 4 is arranged in the magnetic cavity 302, the magnetic conductive ring 5 is arranged between the periphery of the magnet 4 and the inner wall of the magnetic cavity 302, the magnetic conductive ring 5, the magnet 4 and the rotating shaft 2 share a common axis, and a wear-resistant gasket 6 is arranged between the shaft end of the rotating shaft 2 and the magnet 4.
In order to make the magnet 4 generate attraction force to the rotating shaft 2, the magnet 4 adopts a halbach array structure, the upper surface of the magnet 4 is of one polarity, the outer peripheral surface of the magnet 4 is of a different polarity from the upper surface, and the lower surface of the magnet 4 is non-polar. The magnetic flux of the magnet 4 is along a closed loop of the upper surface of the magnet 4, the rotating shaft 2, the magnetic conductive ring 5 and the outer peripheral surface of the magnet 4, so that the magnet 4 generates attraction force on the rotating shaft 2.
In order to reduce the assembly difficulty of the shaft sleeve 1, the upper middle part of the shaft sleeve 1 is in interference fit with the sleeve 3, and a gap is arranged between the lower part of the shaft sleeve 1 and the sleeve 3. The part through 1 periphery of axle sleeve and 3 interference fits of sleeve, and the rest does not contact, can effectively reduce axle sleeve 1's the assembly degree of difficulty.
For the convenience of assembly, the height of the magnetic conductive ring 5 is lower than that of the magnetic cavity 302. The upper end part of the magnetic conduction ring 5 is prevented from touching the lower end surface of the shaft sleeve 1, and the assembly is easy.
In order to reduce the magnetic leakage, the height of the magnetic conduction ring 5 is higher than that of the magnet 4. The short circuit between the upper surface of the magnet 4 and the magnetic conduction ring 5 is avoided, and the magnetic flux leakage is reduced.
In order to reduce the friction resistance, the shaft end part of the rotating shaft 2 axially extends out of the lower end of the shaft sleeve 1 and into the upper part of the magnetic cavity 302, and the end face of the shaft end part of the rotating shaft 2 is chamfered in an arc shape. The friction contact area between the shaft end part of the rotating shaft 2 and the gasket 6 can be reduced, the friction resistance is reduced, and the friction temperature rise is reduced.
In order to reduce the axial processing precision of the shaft sleeve 1, the upper end of the sleeve 3 is provided with a cylindrical stepped hole 303 with a diameter larger than that of the shaft sleeve cavity 301. The processing precision of the axial length of the shaft sleeve 1 can be effectively reduced, the shaft sleeve 1 is prevented from extending out of the upper end of the sleeve 3 due to overlong, and the upper end of the shaft sleeve 1 is prevented from touching other parts.
In order to realize the protection effect on the magnetic conductive ring 5 and the magnet 4, the surface of the magnetic conductive ring 5 is coated with an oil-proof agent, and the surface of the magnet 4 is coated with an oil-proof agent. Providing protection to the magnetic conductive ring 5 and the magnet 4.
The utility model provides a motor, includes rotor subassembly and stator module, and the rotor subassembly is equipped with 2 pivots 2 and is equipped with the spacing subassembly of pivot, and stator module connects in the 3 peripheries of the sleeve of the spacing subassembly of pivot to it is rotatory to drive the rotor subassembly. The motor noise generated by the collision of the rotating shaft 2 and shaft end parts is avoided, and the vibration of the motor is reduced.
Through the effect of magnet 4 magnetism to 2 axle head portions of pivot, when the motor operates, axial float can not take place for pivot 2, and it is spacing effectively to realize the axial of pivot 2, has avoided traditional motor because the noise that pivot 2 and axle head spare part axial collision vibration produced, has reduced the vibration, obtains better silence effect.
The above shaft limiting assembly and motor shown in fig. 1-2 are embodiments of the present invention, and it has been demonstrated that the substantial features and progress of the present invention can be modified according to the actual use requirements, and the modifications of the same in terms of shape, structure, etc. are all within the scope of protection of the present solution.
Claims (9)
1. The spacing subassembly of pivot, its characterized in that: including axle sleeve (1), sleeve (3), magnet (4) and magnetic ring (5), sleeve (3) be equipped with cylindrical axle sleeve chamber (301) and cylindrical magnetism chamber (302) that the diameter that is located axle sleeve chamber (301) below is less than axle sleeve chamber (301), axle sleeve (1) inlay in axle sleeve chamber (301), axle sleeve (1) overcoat in pivot (2) and with pivot (2) normal running fit, magnetism chamber (302) in be equipped with magnet (4), be equipped with magnetic ring (5) between magnet (4) periphery and magnetism chamber (302) inner wall, magnetic ring (5), magnet (4) and pivot (2) coaxial lead, be equipped with wear-resisting gasket (6) between pivot (2) axle head portion and magnet (4).
2. The shaft stop assembly of claim 1, wherein: the magnet (4) adopts a Halbach array structure, the upper surface of the magnet (4) has one polarity, the peripheral surface of the magnet (4) has one polarity different from that of the upper surface, and the lower surface of the magnet (4) has no polarity.
3. The shaft stop assembly of claim 1, wherein: the middle upper part of the shaft sleeve (1) is in interference fit with the sleeve (3), and a gap is arranged between the lower part of the shaft sleeve (1) and the sleeve (3).
4. The shaft stop assembly of claim 1, wherein: the height of the magnetic conduction ring (5) is lower than that of the magnetic cavity (302).
5. The shaft limiting assembly of claim 4, wherein: the height of the magnetic conductive ring (5) is higher than that of the magnet (4).
6. The shaft limiting assembly of claim 5, wherein: the shaft end part of the rotating shaft (2) axially extends out of the lower end of the shaft sleeve (1) and extends into the upper part of the magnetic cavity (302), and the end face of the shaft end part of the rotating shaft (2) is chamfered in an arc shape.
7. The shaft limiting assembly of claim 6, wherein: the upper end of the sleeve (3) is provided with a cylindrical step hole (303) with the diameter larger than that of the shaft sleeve cavity (301).
8. The shaft limiting assembly of claim 6, wherein: the surface of the magnetic conductive ring (5) is coated with an oil-proof agent, and the surface of the magnet (4) is coated with an oil-proof agent.
9. The utility model provides a motor, includes rotor subassembly and stator module, the rotor subassembly is equipped with its characterized in that of pivot (2): the rotating shaft (2) is provided with a rotating shaft limiting assembly according to any one of claims 1 to 8, and the stator assembly is connected to the periphery of the sleeve (3) of the rotating shaft limiting assembly and drives the rotor assembly to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121298209.2U CN215120432U (en) | 2021-06-10 | 2021-06-10 | Rotating shaft limiting assembly and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121298209.2U CN215120432U (en) | 2021-06-10 | 2021-06-10 | Rotating shaft limiting assembly and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215120432U true CN215120432U (en) | 2021-12-10 |
Family
ID=79305669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121298209.2U Active CN215120432U (en) | 2021-06-10 | 2021-06-10 | Rotating shaft limiting assembly and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215120432U (en) |
-
2021
- 2021-06-10 CN CN202121298209.2U patent/CN215120432U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1174623A2 (en) | Blower | |
| JP2004040926A (en) | Fan motor | |
| CN103178631B (en) | Rotor | |
| EP1134423B1 (en) | A blower | |
| CN215120432U (en) | Rotating shaft limiting assembly and motor | |
| CN107093938A (en) | Magnetic suspension motor and domestic air conditioning | |
| WO2023272963A1 (en) | Electric motor, fan and household appliance | |
| CN106921234A (en) | A kind of magnetic gear outer rotor mounting structure | |
| CN203868120U (en) | Composite bush | |
| CN201113625Y (en) | Automobile generator back end cover bearing base | |
| CN206283375U (en) | A kind of machine shaft | |
| CN207053310U (en) | Magnetic suspension motor and domestic air conditioning | |
| CN208738978U (en) | A kind of brushless motor | |
| CN111917207A (en) | Miniature integrated permanent magnet rotor | |
| CN206023439U (en) | A kind of adjustable motor bearings component of precompression | |
| CN205423283U (en) | Axle bush locking structure for magnetic drive pump | |
| CN211429097U (en) | Single-bearing motor and sewing machine | |
| CN220043127U (en) | Vibration isolation and vibration reduction structure of motor of blower | |
| CN214788603U (en) | Rotating shaft bearing kit, low-noise suspension motor and electric toothbrush | |
| CN217590491U (en) | Linear driver | |
| CN101865156B (en) | Connection structure of bearing cover and rotor shaft in hot-water recycle pump | |
| CN216721113U (en) | Mounting structure of motor with gear box | |
| CN214499852U (en) | Brake electromagnet | |
| CN207660897U (en) | A kind of high-precision brushless DC blower body construction | |
| JPH1198758A (en) | Bearing structure of small-sized motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |