CN206272374U - A kind of rotor structure of disc permanent-magnet brushless dc motor - Google Patents
A kind of rotor structure of disc permanent-magnet brushless dc motor Download PDFInfo
- Publication number
- CN206272374U CN206272374U CN201621425269.5U CN201621425269U CN206272374U CN 206272374 U CN206272374 U CN 206272374U CN 201621425269 U CN201621425269 U CN 201621425269U CN 206272374 U CN206272374 U CN 206272374U
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- permanent
- magnet pole
- magnetic conductive
- conductive board
- magnet
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Abstract
The utility model is a kind of disc permanent-magnet brushless dc motor rotor structure, and 3~5 pairs of identical permanent-magnet poles are symmetrically evenly distributed in the plate face of magnetic conductive board side, and each permanent-magnet pole center is on the circle concentric with magnetic conductive board, adjacent permanent-magnet pole opposite polarity.Magnetic conductive board is coated by an insulating material, and each permanent-magnet pole is embedded in the insulating materials of magnetic conductive board plate face.The thickness that the magnetic conductive board fixes insulating materials in the plate face of permanent-magnet pole is more than 2 millimeters.It is the 2/3 to 4/5 of permanent-magnet pole thickness that each permanent-magnet pole is embedded in the depth in insulating materials.The utility model permanent-magnet pole is embedded in the insulating materials of cladding magnetic conductive board, and the insulating materials of solidification surrounds permanent-magnet pole, and firmly permanent-magnet pole is fixed on magnetic conductive board；Accuracy of form and position requirement of this structure to magnetic conductive board and permanent-magnet pole is reduced, cost reduction；This structure can once realize that production efficiency is high with mould, and can guarantee that the surface of each permanent-magnet pole is in same plane, it is ensured that rotor quality.
Description
Technical field
The utility model is related to disc permanent-magnet brushless dc motor manufacturing technology, and it is straight that specially a kind of desk permanent-magnet is brushless
Flow the rotor structure of motor.
Background technology
Disc permanent-magnet brushless dc motor rotor sets up axial magnetic field using permanent-magnet material.Existing desk permanent-magnet is brushless
DC motor rotor is to fix some to permanent-magnet pole on magnetic conductive board, and magnetic conductive board is coupled with rotating shaft, stator winding surface with turn
Even air gap is kept between sub- permanent-magnet pole surface.This air gap is typically only 0.6 to 0.8 millimeter, and rotor speed is up to number per minute
Thousand turns, the required precision and matching requirements to magnetic conductive board and rotor permanent magnet pole are higher, it is desirable to the height on the permanent-magnet pole surface of rotor
It is completely the same, be and to require that permanent-magnet pole is Nian Jie with magnetic conductive board firmly in a plane, be will not fall off in high-speed rotation.Mesh
The permanent-magnet pole of preceding rotor structure is bonded on magnetic conductive board, it is desirable to which magnetic conductive board and permanent-magnet pole have the accuracy of form and position higher, ability
Ensureing the even air gap between rotor permanent magnet pole surface and stator winding surface after magnetic conductive board is fixed on rotating shaft.Particularly to make
Each permanent-magnet pole position meets the requirements, and magnetic pole technique for sticking efficiency is low, is difficult inspection, it is difficult to reach quality requirement.
Utility model content
The purpose of this utility model is a kind of disc permanent-magnet brushless dc motor rotor structure of design, some to permanent-magnet pole
It is embedded in the insulating materials of cladding magnetic conductive board, is overall structure.This rotor structure permanent-magnet pole is connected firmly with magnetic conductive board, can use mould
Tool one-shot forming, improve production efficiency and reliability.
A kind of disc permanent-magnet brushless dc motor rotor structure of the utility model design, including magnetic conductive board and permanent magnetism
Pole, magnetic conductive board is plectane, and center is the axle sleeve being engaged with machine shaft, and 3~5 pairs of identical permanent-magnet poles are symmetrically uniform
It is distributed in the plate face of magnetic conductive board side, each permanent-magnet pole center is on the circle concentric with magnetic conductive board, adjacent permanent-magnet pole polarity
Conversely.
The magnetic conductive board is coated by an insulating material, and each permanent-magnet pole is embedded in the insulating materials of magnetic conductive board plate face.
The thickness that the magnetic conductive board fixes insulating materials in the plate face of permanent-magnet pole is more than 2 millimeters.
It is the 2/3 to 4/5 of permanent-magnet pole thickness that each permanent-magnet pole is embedded in the depth in insulating materials.
The insulating materials is unsaturated polyester glass fiber enhancing BMC, phenolic glass fiber moulding compound, ring
Any one in oxygen tree fat.
Compared with prior art, a kind of advantage of disc permanent-magnet brushless dc motor rotor structure of the utility model is：
1st, permanent-magnet pole is embedded in the insulating materials of cladding magnetic conductive board, and the insulating materials of solidification surrounds permanent-magnet pole, firmly by permanent-magnet pole
It is fixed on magnetic conductive board；2nd, accuracy of form and position requirement of this structure to magnetic conductive board and permanent-magnet pole is reduced, therefore production cost reduction；3rd, originally
Structure can be once embedded in some in the insulating materials in magnetic conductive board plate face with mould to permanent-magnet pole, and production efficiency is high, and can protect
The surface for demonstrate,proving each permanent-magnet pole is in same plane, it is ensured that rotor quality.
Brief description of the drawings
Fig. 1 is the front view of this disc permanent-magnet brushless dc motor rotor structure embodiment；
Fig. 2 is the side view of this disc permanent-magnet brushless dc motor rotor structure embodiment.
In figure marked as：
1st, insulating materials, 2, permanent-magnet pole, 3, magnetic conductive board.
Specific embodiment
This disc permanent-magnet brushless dc motor rotor structure embodiment as shown in figure 1, including magnetic conductive board 3 and permanent-magnet pole 2,
Magnetic conductive board 3 is plectane, and center is the axle sleeve being engaged with machine shaft, and 4 pairs of identical permanent-magnet poles 2 are symmetrically uniformly distributed
In the plate face of the side of magnetic conductive board 3, the center of each permanent-magnet pole 2 is on the circle concentric with magnetic conductive board 3, the adjacent polarity of permanent-magnet pole 2
Conversely.
This example magnetic conductive board 3 is coated by insulating materials 1, and the insulating materials 1 of this example is unsaturated polyester glass fiber enhancing group
Shape moulding compound, the thickness that magnetic conductive board 3 fixes insulating materials 1 in the plate face of permanent-magnet pole 2 is 2.5 millimeters.Each permanent-magnet pole 2 is embedded in magnetic conduction
In the insulating materials 1 of the plate face of plate 3, the depth of the permanent-magnet pole 2 being embedded in insulating materials 1 is 2.5 millimeters, the insulation on magnetic conductive board 3
The surface of material 1 is to 1 millimeter of 2 surface distance of permanent-magnet pole.
Above-described embodiment, only further describes to the purpose of this utility model, technical scheme and beneficial effect
Specific case, the utility model is not limited to this.All any modifications made within scope of disclosure of the present utility model,
Equivalent, improvement etc., are all contained within protection domain of the present utility model.
Claims (4)
1. a kind of disc permanent-magnet brushless dc motor rotor structure, including magnetic conductive board (3) and permanent-magnet pole (2), magnetic conductive board (3) is
Plectane, center is the axle sleeve being engaged with machine shaft, and 3~5 pairs of identical permanent-magnet poles (2) are symmetrically evenly distributed on and lead
In the plate face of magnetic sheet (3) side, each permanent-magnet pole (2) center is on the circle concentric with magnetic conductive board (3), adjacent permanent-magnet pole (2)
Opposite polarity；It is characterized in that：
The magnetic conductive board (3) is coated by insulating materials (1), and each permanent-magnet pole (2) is embedded in the insulating materials of magnetic conductive board (3) plate face
(1) in.
2. disc permanent-magnet brushless dc motor rotor structure according to claim 1, it is characterised in that：
The thickness of insulating materials (1) is more than 2.5 millimeters in the plate face of the fixed permanent-magnet pole (2) of the magnetic conductive board (3).
3. disc permanent-magnet brushless dc motor rotor structure according to claim 1, it is characterised in that：
It is the 2/3 to 4/5 of permanent-magnet pole (2) thickness that each permanent-magnet pole (2) is embedded in the depth in insulating materials (1).
4. disc permanent-magnet brushless dc motor rotor structure according to claim 1, it is characterised in that：
The insulating materials (1) is unsaturated polyester glass fiber enhancing BMC, phenolic glass fiber moulding compound, epoxy
Any one in resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621425269.5U CN206272374U (en) | 2016-12-23 | 2016-12-23 | A kind of rotor structure of disc permanent-magnet brushless dc motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621425269.5U CN206272374U (en) | 2016-12-23 | 2016-12-23 | A kind of rotor structure of disc permanent-magnet brushless dc motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206272374U true CN206272374U (en) | 2017-06-20 |
Family
ID=59047539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621425269.5U Active CN206272374U (en) | 2016-12-23 | 2016-12-23 | A kind of rotor structure of disc permanent-magnet brushless dc motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206272374U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533010A (en) * | 2016-12-23 | 2017-03-22 | 桂林电器科学研究院有限公司 | Rotor structure of disc permanent magnet brushless DC motor |
-
2016
- 2016-12-23 CN CN201621425269.5U patent/CN206272374U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533010A (en) * | 2016-12-23 | 2017-03-22 | 桂林电器科学研究院有限公司 | Rotor structure of disc permanent magnet brushless DC motor |
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