CN210517914U - External rotor motor using arc-angle stator - Google Patents
External rotor motor using arc-angle stator Download PDFInfo
- Publication number
- CN210517914U CN210517914U CN201921728901.7U CN201921728901U CN210517914U CN 210517914 U CN210517914 U CN 210517914U CN 201921728901 U CN201921728901 U CN 201921728901U CN 210517914 U CN210517914 U CN 210517914U
- Authority
- CN
- China
- Prior art keywords
- arc
- bearing
- motor shaft
- stator
- arc angle
- 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
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The utility model discloses an external rotor motor using arc angle stator, which 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. The utility model discloses well curved winding arm head can reduce the windage that the rotor produced when rotatory to the noise reduction with wipe the core risk, raise the power, avoid the emergence of magnetic leakage phenomenon.
Description
Technical Field
The utility model relates to an external rotor electric machine especially relates to an external rotor electric machine who uses arc angle stator.
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.
To above problem, the utility model discloses research manufacturing.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides an external rotor motor using an arc angle stator.
In order to solve the technical problem, the utility model discloses a technical scheme is: 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 utility model discloses can reduce the windage that the rotor produced when rotatory to the noise reduction with wipe the core risk, raise the power and life avoid the emergence of magnetic leakage phenomenon.
Drawings
Fig. 1 is a schematic sectional view 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. And the utility model discloses well curved winding arm head can reduce the windage that produces when the rotor is rotatory to noise reduction and core risk of wiping improve power, avoid the emergence of magnetic leakage phenomenon.
The outer rotor motor applying the arc-angle stator can be applied to hand-held electric tools, including alternating current/direct current brushless electric hammers, electric picks, electric grinders, electric planers, aircraft drills, concrete vibrators, angle grinders, mixers, aluminum sawing machines, wall grinding machines, water drills, brushless wrenches, brushless hair dryers, section cutting machines, marble machines 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 the technical personnel in the technical field are in the present invention, which can also belong to the protection scope of the present invention.
Claims (4)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921728901.7U CN210517914U (en) | 2019-10-15 | 2019-10-15 | External rotor motor using arc-angle stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921728901.7U CN210517914U (en) | 2019-10-15 | 2019-10-15 | External rotor motor using arc-angle stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210517914U true CN210517914U (en) | 2020-05-12 |
Family
ID=70572934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921728901.7U Active CN210517914U (en) | 2019-10-15 | 2019-10-15 | External rotor motor using arc-angle stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210517914U (en) |
-
2019
- 2019-10-15 CN CN201921728901.7U patent/CN210517914U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200204019A1 (en) | Rotor lamination assembly | |
| US20100264769A1 (en) | Induction motor having rotors arranged concentrically and being able to used to generator | |
| EP2527098B1 (en) | Electric power tool | |
| CN103580428B (en) | Half magnetic sheet external-rotor-type asynchronous starting permanent magnet synchronous motor | |
| CN210703926U (en) | Motor rotor grinding device | |
| KR20200029495A (en) | Electric machine | |
| CN210517914U (en) | External rotor motor using arc-angle stator | |
| JP2010531132A (en) | Winding body for electric motor and method for producing winding body for electric motor | |
| WO2019113882A1 (en) | Direct-current brushless low-speed electric motor, and manufacturing process involving combining fan, magnet and yoke strip | |
| CN104440437A (en) | Sander | |
| CN114600348A (en) | Axial flux machine for an electrical machining device and electrical machining device having an axial flux machine | |
| CN110556940A (en) | Outer rotor motor applying arc-angle stator and application | |
| CN210518019U (en) | External rotor motor using multi-groove rotor | |
| JP4666526B2 (en) | Commutator motor and vacuum cleaner | |
| CN204349755U (en) | A kind of unidirectional series-wound motor | |
| CN110601445A (en) | Outer rotor motor applying multi-groove rotor and application | |
| JP2017118648A (en) | Electric motor for cleaner | |
| JP2011101444A (en) | Commutator motor, electric blower, power tool, and vacuum cleaner | |
| CN107046354B (en) | Brushless motor and electric tool | |
| CN107733117B (en) | A kind of angle grinder reluctance machine | |
| CN217307364U (en) | Electric tool brushless DC motor | |
| CN221058070U (en) | Stator punching sheet and motor | |
| KR20210064473A (en) | Outer-rotor type bldc motor | |
| CN2783620Y (en) | Brushless dc motor with magnetic short circuit structure | |
| CN103683723A (en) | Bearing removing device for motor rotor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 226100 No.88 tieanchor Road, Binhai New Area, Haimen City, Nantong City, Jiangsu Province Patentee after: Jiangsu anchor Tools Co.,Ltd. Address before: 226100 No.88 tieanchor Road, Binhai New Area, Haimen City, Nantong City, Jiangsu Province Patentee before: JIANGSU ANCHOR TOOLS Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230724 Address after: 226100 Room 10, No. 88 Tiebao Road, Baochang Town, Haimen District, Nantong City, Jiangsu Province Patentee after: Jiangsu Tengya Iron Anchor Tool Co.,Ltd. Address before: 226100 No.88 tieanchor Road, Binhai New Area, Haimen City, Nantong City, Jiangsu Province Patentee before: Jiangsu anchor Tools Co.,Ltd. |
|
| TR01 | Transfer of patent right |