CN110556940A - Outer rotor motor applying arc-angle stator and application - Google Patents
Outer rotor motor applying arc-angle stator and application Download PDFInfo
- Publication number
- CN110556940A CN110556940A CN201910976529.XA CN201910976529A CN110556940A CN 110556940 A CN110556940 A CN 110556940A CN 201910976529 A CN201910976529 A CN 201910976529A CN 110556940 A CN110556940 A CN 110556940A
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- China
- Prior art keywords
- arc
- bearing
- rotor
- motor shaft
- angle stator
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- 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.)
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Classifications
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
-
- 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
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses an outer rotor motor applying an arc angle stator, which comprises a first bearing, a second bearing and a motor shaft, wherein the first bearing is arranged on the outer rotor shaft; the first bearing and the second bearing are respectively sleeved at two ends of the motor shaft, and an arc-angle stator is further sleeved on the motor shaft between the first bearing and the second bearing; the outer side of the arc-angle stator is sleeved with a rotor; the upper end of the rotor is provided with a fan blade, and the rotor is fixedly connected with the motor shaft through the fan blade; and a bearing seat is arranged on the outer side of the first bearing. The outer rotor motor of applied arc angle stator is applied to hand-held type electric tool, and hand-held type electric tool includes that alternating current-direct current brushless electric hammer, electric pick, electric grinder, electric planer, aircraft bore, mixes earth electromagnetic shaker, angle grinder, mixer, saw aluminium machine, wall polisher, water bore, brushless spanner, brushless hair-dryer, section bar cutting machine and marble machine. According to the invention, the head part of the arc-shaped winding arm can reduce wind resistance generated when the rotor rotates, so that noise and core wiping risks are reduced, power is improved, and the magnetic flux leakage phenomenon is avoided.
Description
Technical Field
The invention relates to an outer rotor motor and application thereof, in particular to an outer rotor motor applying an arc-angle stator and application thereof.
Background
The outer rotor motor is one kind of motor and features that the outer casing rotates as the rotor and the inner stator is fixed. It is often applied to electric appliances such as fans. However, in the prior art, the external rotor motor is usually noisy during operation, and high temperature is easily generated during operation, which is not favorable for maintaining the permanent magnetism inside the motor. In addition, in the prior art, the rotor easily causes friction between the magnet and the stator in the rotating process to damage the inside of the motor, so that the service life is shortened or the qualification rate of products when the motor leaves a factory is reduced.
The present invention was made in view of the above problems.
Disclosure of Invention
In order to solve the defects of the technology, the invention provides an outer rotor motor applying an arc-angle stator and application thereof.
In order to solve the technical problems, the invention adopts the technical scheme that: an outer rotor motor applying an arc angle stator comprises a first bearing, a second bearing and a motor shaft; the first bearing and the second bearing are respectively sleeved at two ends of the motor shaft, and an arc-angle stator is further sleeved on the motor shaft between the first bearing and the second bearing; the outer side of the arc-angle stator is sleeved with a rotor; the upper end of the rotor is provided with a fan blade, and the rotor is fixedly connected with the motor shaft through the fan blade;
A bearing seat is arranged on the outer side of the first bearing; the bearing seat is fixedly connected with the arc angle stator and used for fixing the arc angle stator;
The arc angle stator is formed by stacking a plurality of arc angle steel sheets; the arc angle steel sheet comprises a base body, and the middle part of the base body is provided with a through hole penetrating through the motor shaft; the substrate is fixedly connected with a plurality of winding arms which are arranged in a radial shape; winding coils on the winding arms; the free end of the winding arm is provided with heads protruding towards the left side and the right side, and the outer edge and the corner of the heads are both arc-shaped.
Further, the arc center of the arc-shaped outer edge of the head part is the same as the arc center of the arc-shaped corner.
Further, the arc center of the arc-shaped outer edge of the head part is different from the arc center of the arc-shaped corner.
Further, the first bearing comprises an outer ring, an inner ring and balls; the ball clamp is arranged between the outer ring and the inner ring; the outer ring is fixedly connected with the bearing seat; the inner ring is sleeved on the motor shaft.
The application of the outer rotor motor applying the arc-angle stator is applied to a handheld electric tool.
Further, the hand-held electric tool includes an ac/dc brushless electric hammer, an electric pick, an electric grinder, an electric planer, an aircraft drill, a concrete vibrator, an angle grinder, a blender, an aluminum saw, a wall grinder, a water drill, a brushless wrench, a brushless blower, a profile cutter, and a marble machine.
The invention can reduce the wind resistance generated when the rotor rotates, thereby reducing the noise and the risk of core wiping, improving the power and prolonging the service life, and avoiding the occurrence of magnetic leakage phenomenon.
Drawings
Fig. 1 is a schematic cross-sectional structure of the present invention.
FIG. 2 is a schematic structural diagram of a steel sheet with arc angle.
Fig. 3 is a schematic view of a head structure according to the first embodiment.
Fig. 4 is a schematic view of the head structure of the second embodiment.
1. A first bearing; 2. a bearing seat; 3. a motor shaft; 4. an arc angle stator; 5. a rotor; 6. a fan blade; 7. a second bearing; 41. a substrate; 42. a through hole; 43. a winding arm; 44. a head portion.
Detailed Description
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
An outer rotor motor using an arc angle stator is shown in fig. 1, and the motor comprises a first bearing 1, a second bearing 7 and a motor shaft 3; the first bearing and the second bearing are respectively sleeved at two ends of the motor shaft and are used for bearing the rotation of the motor shaft. An arc angle stator 4 is sleeved on the motor shaft between the first bearing and the second bearing; the outer side of the arc-angle stator is sleeved with a rotor 5; the upper end of the rotor 5 is provided with a fan blade 6, and the rotor is fixedly connected with the motor shaft through the fan blade, so that the fan blade and the motor shaft can be driven to rotate when the rotor rotates. Because the arc angle stator is sleeved on the motor shaft instead of being directly fixed with the motor shaft, the stator cannot be driven to rotate when the motor shaft rotates, and the stator is ensured to be stable and immobile.
A bearing seat 2 is arranged on the outer side of the first bearing 1; the bearing seat is fixedly connected with the arc angle stator and used for fixing the arc angle stator, so that the arc angle stator cannot fall off from the motor shaft.
The first bearing 1 comprises an outer ring, an inner ring and balls; the ball clamp is arranged between the outer ring and the inner ring, so that the outer ring and the inner ring can move relatively. The outer ring is fixedly connected with the bearing seat; the inner ring is sleeved on the motor shaft. The bearing seat can bear the arc angle stator and the motor shaft and simultaneously can not block the relative movement between the arc angle stator and the motor shaft.
as shown in fig. 2, the arc angle stator 4 is formed by stacking a plurality of arc angle steel sheets; the arc angle steel sheet comprises a base body 41, and the middle part of the base body is provided with a through hole 42 penetrating through the motor shaft; a plurality of winding arms 43 arranged in a radial shape are fixedly connected on the substrate; winding coils on the winding arms; the free end of the winding arm is provided with a head 44 projecting to the left and right. The base body is used for fixedly connecting a plurality of winding arms, the winding arms are wound with wire coils, and the heads of the winding arms protrude towards two sides to prevent the coils from sliding off from the free ends of the winding arms. The magnet is arranged on the inner side of the rotor, and the device is used by utilizing the electromagnetic induction principle.
The outer edge and the corner of the head are both arc-shaped, and researches show that the edges of the stator winding arms in the prior art are all sharp right-angle shapes, and when a rotor rotates, a large wind resistance can be caused, so that the power of a motor is reduced, and high temperature is generated by friction. The head of the arc-shaped winding arm can reduce wind resistance generated when the rotor rotates, so that noise and core wiping risks are reduced, power is improved, and the magnetic flux leakage phenomenon is avoided.
the outer rotor motor applying the arc-angle stator can be applied to all machines such as an outer rotor motor, an alternating current/direct current brushless electric hammer of a handheld electric tool, an electric pick, an electric grinder, an electric planer, an airplane drill, a concrete vibrator, an angle grinder, a stirrer, an aluminum sawing machine, a wall grinding machine, a water drill, a brushless wrench, a brushless blower, a section cutting machine, a marble machine and the like.
The first embodiment,
An outer rotor motor applying an arc angle stator comprises a first bearing 1, a second bearing 7 and a motor shaft 3; the first bearing and the second bearing are respectively sleeved at two ends of the motor shaft, and an arc-angle stator 4 is further sleeved on the motor shaft between the first bearing and the second bearing; the outer side of the arc-angle stator is sleeved with a rotor 5; the upper end of the rotor 5 is provided with a fan blade 6, and the rotor is fixedly connected with the motor shaft through the fan blade.
A bearing seat 2 is arranged on the outer side of the first bearing 1; the bearing seat is fixedly connected with the arc angle stator and used for fixing the arc angle stator, so that the arc angle stator cannot fall off from the motor shaft.
The first bearing 1 comprises an outer ring, an inner ring and balls; the ball clamp is arranged between the outer ring and the inner ring. The outer ring is fixedly connected with the bearing seat; the inner ring is sleeved on the motor shaft.
The arc angle stator 4 is formed by stacking a plurality of arc angle steel sheets; the arc angle steel sheet comprises a base body 41, and the middle part of the base body is provided with a through hole 42 penetrating through the motor shaft; a plurality of winding arms 43 arranged in a radial shape are fixedly connected on the substrate; winding coils on the winding arms; the free end of the winding arm is provided with a head 44 protruding to the left and right, and the outer edge and the corner of the head are both arc-shaped.
As shown in fig. 3, the arc center of the arc outer edge of the head 44 is the same as that of the arc corner, the head is circular, and the diameter of the head is larger than the width of the winding arm, so that on one hand, the coil can be prevented from sliding off the winding arm, on the other hand, the smooth edge can reduce the wind resistance, thereby reducing the friction force, improving the conditions of heating and noise, improving the working efficiency, and preventing the magnetic leakage caused by high temperature.
Example II,
The difference from the first embodiment is that: the arc center of the arcuate outer edge of the head 44 is different from the arc center of the arcuate corner. As shown in fig. 4. In the second embodiment, the head is oblate and thin, and the edges of the corners of the left side and the right side of the head are also arc-shaped, so that the arc-shaped stator can reduce wind resistance and effectively reduce the risk of wiping the core.
Because the thickness of head is showing and is reducing to increased the distance between head and the magnet on the rotor, thereby effectively avoided the risk of arc angle stator and magnet friction, improved product percent of pass and life.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (6)
1. An external rotor motor using arc angle stator is characterized in that: the motor comprises a first bearing (1), a second bearing (7) and a motor shaft (3); the first bearing and the second bearing are respectively sleeved at two ends of the motor shaft, and an arc-angle stator (4) is further sleeved on the motor shaft between the first bearing and the second bearing; the outer side of the arc-angle stator is sleeved with a rotor (5); the upper end of the rotor (5) is provided with a fan blade (6), and the rotor is fixedly connected with the motor shaft through the fan blade;
A bearing seat (2) is arranged on the outer side of the first bearing (1); the bearing seat is fixedly connected with the arc angle stator and used for fixing the arc angle stator;
The arc angle stator (4) is formed by stacking a plurality of arc angle steel sheets; the arc angle steel sheet comprises a base body (41), and the middle part of the base body is provided with a through hole (42) penetrating through the motor shaft; a plurality of winding arms (43) arranged in a radial shape are fixedly connected to the substrate; winding coils on the winding arms; the free end of the winding arm is provided with heads (44) protruding towards the left side and the right side, and the outer edge and the corner of each head are arc-shaped.
2. The external rotor electric machine using the arc angle stator as claimed in claim 1, wherein: the arc center of the arc-shaped outer edge of the head part (44) is the same as that of the arc corner.
3. The external rotor electric machine using the arc angle stator as claimed in claim 1, wherein: the arc center of the arc-shaped outer edge of the head part (44) is different from the arc center of the arc-shaped corner.
4. The external rotor electric machine using the arc angle stator according to claim 2 or 3, wherein: the first bearing (1) comprises an outer ring, an inner ring and balls; the ball clamp is arranged between the outer ring and the inner ring; the outer ring is fixedly connected with the bearing seat; the inner ring is sleeved on the motor shaft.
5. The application of the external rotor motor using the arc angle stator as claimed in claim 1, wherein: the outer rotor motor applying the arc-angle stator is applied to a handheld electric tool.
6. The external rotor electric machine using the arc angle stator as claimed in claim 5, wherein: hand-held type electric tool includes that the alternating current-direct current brushless electric hammer, electric pick, electric grinder, electric planer, aircraft bore, mixes earth electromagnetic shaker, angle grinder, mixer, saw aluminium machine, wall polisher, water drill, brushless spanner, brushless hair-dryer, section bar cutting machine and marble machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910976529.XA CN110556940A (en) | 2019-10-15 | 2019-10-15 | Outer rotor motor applying arc-angle stator and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910976529.XA CN110556940A (en) | 2019-10-15 | 2019-10-15 | Outer rotor motor applying arc-angle stator and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110556940A true CN110556940A (en) | 2019-12-10 |
Family
ID=68742855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910976529.XA Pending CN110556940A (en) | 2019-10-15 | 2019-10-15 | Outer rotor motor applying arc-angle stator and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110556940A (en) |
-
2019
- 2019-10-15 CN CN201910976529.XA patent/CN110556940A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 226000 88 tieanchor Road, Binhai New Area, Haimen District, Nantong City, Jiangsu Province Applicant after: Jiangsu anchor Tools Co.,Ltd. Address before: 226100 No.88 tieanchor Road, Binhai New Area, Haimen City, Nantong City, Jiangsu Province Applicant before: JIANGSU ANCHOR TOOLS Co.,Ltd. |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230718 Address after: 226100 Room 10, No. 88 Tiebao Road, Baochang Town, Haimen District, Nantong City, Jiangsu Province Applicant after: Jiangsu Tengya Iron Anchor Tool Co.,Ltd. Address before: 226000 88 tieanchor Road, Binhai New Area, Haimen District, Nantong City, Jiangsu Province Applicant before: Jiangsu anchor Tools Co.,Ltd. |