CN114825768A - Rotor magnet steel fixing structure and motor - Google Patents
Rotor magnet steel fixing structure and motor Download PDFInfo
- Publication number
- CN114825768A CN114825768A CN202210554363.4A CN202210554363A CN114825768A CN 114825768 A CN114825768 A CN 114825768A CN 202210554363 A CN202210554363 A CN 202210554363A CN 114825768 A CN114825768 A CN 114825768A
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- China
- Prior art keywords
- magnetic steel
- retaining ring
- fixing structure
- bottom plate
- rotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention relates to a rotor magnetic steel fixing structure, which comprises a flywheel, wherein the flywheel comprises an annular side plate and a bottom plate which are connected, an air inlet hole is formed in the bottom plate, a plurality of magnetic steels are uniformly distributed on the circumference of the inner annular surface of the annular side plate, a first magnetic steel protective ring is arranged on the end surface, far away from the bottom plate, of the magnetic steels in a clinging manner, and blades which are uniformly distributed on the circumference of the first magnetic steel protective ring are arranged on the side surface, far away from the magnetic steels, of the first magnetic steel protective ring; the motor has the rotor magnetic steel fixing structure with the structure and has the same technical effect.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a rotor magnetic steel fixing structure and a motor.
Background
The motor rotor is provided with a circle of ferrite magnetic steel outside a rotor core, and an alternating magnetic field is generated between the ferrite magnetic steel and an electrified stator coil to drive the rotor to rotate. In practical application, in order to fix the magnetic steel, a flywheel is usually provided, the magnetic steel is adhered to the inner ring surface of the flywheel, and two ends of the whole circle of magnetic steel are provided with guard rings for fixing. The heat dissipation of above-mentioned structure is relatively poor, among the prior art, it is serious that the motor generates heat when using for a long time, and the temperature risees and leads to motor copper to consume to increase, and the efficiency and the life-span of motor all can descend.
Disclosure of Invention
The first object of the present invention is to: aiming at the problems that the rotor magnetic steel fixing structure in the prior art has poor heat dissipation performance and the efficiency and the service life of the motor are reduced due to serious heating when the motor is used for a long time, a rotor magnetic steel fixing structure is provided; a second object of the invention is to provide an electric machine.
In order to achieve the first object, the invention adopts the technical scheme that:
the utility model provides a rotor magnet steel fixed knot constructs, includes the flywheel, the flywheel is including the cyclic annular curb plate and the bottom plate that are connected, the inlet port has been seted up to the bottom plate, the circumference equipartition has a plurality of magnet steel on the interior anchor ring of cyclic annular curb plate, keep away from on the magnet steel hug closely on the terminal surface of bottom plate and be equipped with first magnet steel retaining ring, keep away from on the first magnet steel retaining ring be equipped with the flabellum of circumference equipartition on the side of magnet steel.
By adopting the technical scheme, the blades are uniformly distributed on the circumference of the first magnetic steel retaining ring, when the motor rotor rotates, the blades can play the role of a centrifugal fan, that is, the fan blades drive the air on the outer ring to flow at high speed, the pressure intensity is small, the air inside can be discharged out of the flywheel along the radial direction due to the action of the difference of the internal pressure and the external pressure, after the air inside is discharged, the external air enters the inside from the opening on the bottom plate of the flywheel, thereby continuously taking out the internal heat to play a role of heat dissipation, compared with the problems that the rotor magnetic steel fixing structure in the prior art has poor heat dissipation performance, and the motor generates heat seriously during long-term use to cause the efficiency and the service life to be reduced, the invention can effectively discharge the heat generated by the motor during work, greatly reduce the temperature rise of the motor, thereby reduce motor copper consumption, promote motor efficiency and life, simultaneously, thereby can suitably improve motor line load and reduce motor cost and volume when the design.
Further, the flabellum is platelike structure, arbitrary the normal direction of flabellum face is located rather than the position the tangential direction of first magnet steel retaining ring is parallel, so set up for when electric motor rotor rotated and drives first magnet steel retaining ring and rotate, the flabellum was bigger at the area of contact of tangential direction and air, driven more air flows, realized better centrifugal exhaust effect.
Furthermore, a second magnetic steel guard ring is arranged on the end face, close to the bottom plate, of the magnetic steel in a clinging manner; first partition plates which are uniformly distributed on the circumference of the first magnetic steel retaining ring and are close to the side faces of the magnetic steels are arranged, and one ends of the magnetic steels, which are far away from the bottom plate, are clamped in gaps among the first partition plates; hug closely on the second magnet steel retaining ring be equipped with the second baffle of circumference equipartition on the side of magnet steel, the magnet steel is close to the one end joint of bottom plate is in the clearance between the second baffle, first baffle and second baffle are used for separating and spacing the magnet steel at the circumferencial direction, guarantee that the magnet steel is along the circumferencial direction equipartition.
Furthermore, the number of the fan blades is the same as that of the first partition plates, the fan blades are arranged on two sides of the first magnetic steel retaining ring in a one-to-one correspondence mode, any fan blade and the first partition plate corresponding to the fan blade are connected to form a plate-shaped structure, and the fan blades and the first partition plates are connected to form one plate-shaped structure, so that the production and the manufacturing are easier.
Furthermore, the first magnetic steel retaining ring is provided with a supporting part which is abutted against any one of two side surfaces of the fan blade, and the supporting part is arranged for preventing the root part of the fan blade connected with the first magnetic steel retaining ring from deforming.
Furthermore, the supporting part is in the shape of an inwards concave arc, the supporting part is in smooth transition between the first magnetic steel protective ring and the side surface of the fan blade, the supporting part is in the shape of the inwards concave arc, the radial exhaust area is increased, more hot air is discharged, and the heat dissipation effect is better.
Furthermore, the fan blades and the first partition plates are both rectangular plate-shaped structures, the radial width of the fan blades is greater than that of the first partition plates, and the fan blades and the first partition plates are rectangular, so that the fan blades and the first partition plates are convenient to produce and manufacture; the fan blades are designed to be larger along the radial width, so that the contact area between the fan blades and air is larger, more air is driven to flow, and a better centrifugal exhaust effect is realized.
Furthermore, keep away from on the second magnet steel retaining ring be equipped with the cushion of circumference equipartition on the side of magnet steel, the cushion with the bottom plate butt, the design of cushion has reduced the area of contact of second magnet steel retaining ring with the bottom plate, has reduced the heat of flywheel heat-conduction to second magnet steel retaining ring, and then has reduced the heat of transmission to the magnet steel, reduces the magnet steel bonding agent and is heated the molten possibility.
Furthermore, first magnet steel retaining ring and second magnet steel retaining ring are the nylon material, and this material has good comprehensive properties, including mechanical properties, heat resistance, wearability, chemical resistance and self-lubricity, and easily processing.
In order to achieve the second purpose, the invention adopts the following technical scheme:
a motor comprises the rotor magnetic steel fixing structure.
The invention has the beneficial effects that: the heat generated by the work of the motor can be effectively discharged, the temperature rise of the motor is greatly reduced, the copper consumption of the motor is reduced, the efficiency of the motor is improved, the service life of the motor is prolonged, and meanwhile, the linear load of the motor can be properly improved during design, so that the cost and the volume of the motor are reduced; the motor has the technical effect that the rotor magnetic steel fixing structure is the same.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
fig. 3 is an enlarged view of a in fig. 2.
The labels in the figure are: 1-first magnetic steel retaining ring, 2-magnetic steel, 3-second magnetic steel retaining ring, 4-flywheel, 5-fan blade, 6-first partition plate, 7-supporting part, 8-second partition plate, 9-annular side plate, 10-bottom plate and 11-cushion block.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Embodiment 1, this embodiment provides a rotor magnetic steel fixing structure, as shown in fig. 1-3, including a flywheel 4, where the flywheel 4 includes an annular side plate 9 and a bottom plate 10 that are connected, the bottom plate 10 is provided with an air inlet, a plurality of magnetic steels 2 are uniformly distributed on the inner annular surface of the annular side plate 9, a first magnetic steel guard ring 1 is closely attached to the end surface of the magnetic steel 2 far away from the bottom plate 10, and fan blades 5 are uniformly distributed on the side surface of the first magnetic steel guard ring 1 far away from the magnetic steel 2;
the fan blades 5 are of plate-shaped structures, and the normal direction of the surface of any fan blade 5 is parallel to the tangential direction of the first magnetic steel retaining ring 1 at the position of the fan blade;
a second magnetic steel guard ring 3 is arranged on the end surface, close to the bottom plate 10, of the magnetic steel 2 in a clinging manner; first partition plates 6 which are uniformly distributed on the circumference are arranged on the side surface of the first magnetic steel retaining ring 1, which is close to the magnetic steel 2, and one end of the magnetic steel 2, which is far away from the bottom plate 10, is clamped in a gap between the first partition plates 6; second partition plates 8 which are uniformly distributed on the circumference are arranged on the side faces, close to the magnetic steel 2, of the second magnetic steel retaining ring 3, and one end, close to the bottom plate 10, of the magnetic steel 2 is clamped in a gap between the second partition plates 8;
the number of the fan blades 5 is the same as that of the first partition plates 6, the fan blades 5 are arranged on two sides of the first magnetic steel retaining ring 1 in a one-to-one correspondence manner, and any fan blade 5 is connected with the corresponding first partition plate 6 to form a plate-shaped structure;
the fan blades 5 and the first partition plates 6 are both rectangular platy structures, and the radial width of the fan blades 5 is larger than that of the first partition plates 6;
the first magnetic steel retaining ring 1 is provided with a supporting part 7 which is abutted against two side surfaces of any fan blade 5;
the supporting part 7 is in an inward concave arc shape and is smoothly transited between the first magnetic steel retaining ring 1 and the side surface of the fan blade 5;
the side surface of the second magnetic steel retaining ring 3 far away from the magnetic steel 2 is provided with cushion blocks 11 which are uniformly distributed on the circumference, and the cushion blocks 11 are abutted against the bottom plate 10;
the first magnetic steel retaining ring 1 and the second magnetic steel retaining ring 3 are both made of nylon materials.
By adopting the technical scheme, the blades are uniformly distributed on the circumference of the first magnetic steel retaining ring, when the motor rotor rotates, the blades can play the role of a centrifugal fan, that is, the fan blades drive the air on the outer ring to flow at high speed, the pressure intensity is small, the air inside can be discharged out of the flywheel along the radial direction due to the action of the difference of the internal pressure and the external pressure, after the air inside is discharged, the external air enters the inside from the opening on the bottom plate of the flywheel, thereby continuously taking out the internal heat to play a role of heat dissipation, compared with the problems that the rotor magnetic steel fixing structure in the prior art has poor heat dissipation performance, and the motor generates heat seriously during long-term use to cause the efficiency and the service life to be reduced, the invention can effectively discharge the heat generated by the motor during work, greatly reduce the temperature rise of the motor, thereby reduce motor copper consumption, promote motor efficiency and life, simultaneously, thereby can suitably improve motor line load and reduce motor cost and volume when the design.
Embodiment 2, a motor, this motor includes above-mentioned rotor magnet steel fixed knot constructs.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a rotor magnet steel fixed knot constructs which characterized in that: including flywheel (4), flywheel (4) are including cyclic annular curb plate (9) and bottom plate (10) that are connected, the inlet port has been seted up in bottom plate (10), the circumference equipartition has a plurality of magnet steel (2) on the interior anchor ring of cyclic annular curb plate (9), keep away from on magnet steel (2) hug closely on the terminal surface of bottom plate (10) and be equipped with first magnet steel retaining ring (1), keep away from on first magnet steel retaining ring (1) be equipped with flabellum (5) of circumference equipartition on the side of magnet steel (2).
2. The rotor magnetic steel fixing structure according to claim 1, wherein: the fan blades (5) are of plate-shaped structures, and the normal direction of the surface of each fan blade (5) is parallel to the tangential direction of the first magnetic steel retaining ring (1) at the position of the normal direction.
3. The rotor magnetic steel fixing structure according to claim 1, wherein: a second magnetic steel guard ring (3) is arranged on the end face, close to the bottom plate (10), of the magnetic steel (2) in a clinging manner; first partition plates (6) which are uniformly distributed on the circumference are arranged on the side surface, close to the magnetic steel (2), of the first magnetic steel retaining ring (1), and one end, far away from the bottom plate (10), of the magnetic steel (2) is clamped in a gap between the first partition plates (6); second magnet steel retaining ring (3) go up the subsides be equipped with second baffle (8) of circumference equipartition on the side of magnet steel (2), magnet steel (2) are close to the one end joint of bottom plate (10) is in the clearance between second baffle (8).
4. The rotor magnetic steel fixing structure according to claim 3, wherein: the fan blades (5) are the same as the first partition plates (6) in number and are arranged on two sides of the first magnetic steel retaining ring (1) in a one-to-one correspondence mode, and any fan blade (5) and the first partition plate (6) corresponding to the fan blade are connected to form a plate-shaped structure.
5. The rotor magnetic steel fixing structure according to claim 1, wherein: and a supporting part (7) which is abutted against any two side surfaces of the fan blade (5) is arranged on the first magnetic steel retaining ring (1).
6. The rotor magnetic steel fixing structure according to claim 5, wherein: the supporting part (7) is in an inwards concave arc shape and is in smooth transition between the first magnetic steel retaining ring (1) and the side surface of the fan blade (5).
7. The rotor magnetic steel fixing structure according to claim 4, wherein: the fan blades (5) and the first partition plates (6) are both rectangular plate-shaped structures, and the radial width of the fan blades (5) is larger than that of the first partition plates (6).
8. The rotor magnetic steel fixing structure according to claim 3, wherein: and cushion blocks (11) which are uniformly distributed in the circumferential direction are arranged on the side surface, far away from the magnetic steel (2), of the second magnetic steel retaining ring (3), and the cushion blocks (11) are abutted to the bottom plate (10).
9. The rotor magnetic steel fixing structure according to claim 3, wherein: the first magnetic steel retaining ring (1) and the second magnetic steel retaining ring (3) are both made of nylon materials.
10. An electric machine characterized by: a rotor magnetic steel fixing structure comprising the rotor magnetic steel fixing structure of any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210554363.4A CN114825768A (en) | 2022-05-20 | 2022-05-20 | Rotor magnet steel fixing structure and motor |
| PCT/CN2023/083827 WO2023221648A1 (en) | 2022-05-20 | 2023-03-24 | Rotor magnetic steel fixing structure and electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210554363.4A CN114825768A (en) | 2022-05-20 | 2022-05-20 | Rotor magnet steel fixing structure and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114825768A true CN114825768A (en) | 2022-07-29 |
Family
ID=82517667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210554363.4A Pending CN114825768A (en) | 2022-05-20 | 2022-05-20 | Rotor magnet steel fixing structure and motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114825768A (en) |
| WO (1) | WO2023221648A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221648A1 (en) * | 2022-05-20 | 2023-11-23 | 神驰机电股份有限公司 | Rotor magnetic steel fixing structure and electric motor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594023B (en) * | 2012-01-17 | 2015-03-11 | 东莞永立电机有限公司 | Self-radiating motor |
| US20130342053A1 (en) * | 2012-06-25 | 2013-12-26 | Georges A.M. Van Gansen | Rotor of Brushless Motor and Brushless Motor Using the Same |
| CN104533830B (en) * | 2014-09-25 | 2017-05-03 | 苏州圆能动力科技有限公司 | Fan structure for electricity generator |
| CN207200500U (en) * | 2017-07-31 | 2018-04-06 | 深圳市速马电机科技有限公司 | A kind of motor of self-contained radiator structure |
| CN112994321B (en) * | 2021-05-08 | 2021-07-30 | 北京三快在线科技有限公司 | Motor end cover, motor and unmanned aerial vehicle |
| CN114825768A (en) * | 2022-05-20 | 2022-07-29 | 神驰机电股份有限公司 | Rotor magnet steel fixing structure and motor |
-
2022
- 2022-05-20 CN CN202210554363.4A patent/CN114825768A/en active Pending
-
2023
- 2023-03-24 WO PCT/CN2023/083827 patent/WO2023221648A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221648A1 (en) * | 2022-05-20 | 2023-11-23 | 神驰机电股份有限公司 | Rotor magnetic steel fixing structure and electric motor |
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| Publication number | Publication date |
|---|---|
| WO2023221648A1 (en) | 2023-11-23 |
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