CN207398939U - A kind of brushless motor stator iron core and brushless motor - Google Patents
A kind of brushless motor stator iron core and brushless motor Download PDFInfo
- Publication number
- CN207398939U CN207398939U CN201721180180.1U CN201721180180U CN207398939U CN 207398939 U CN207398939 U CN 207398939U CN 201721180180 U CN201721180180 U CN 201721180180U CN 207398939 U CN207398939 U CN 207398939U
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- China
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- support
- iron core
- brushless motor
- stator
- yoke portion
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Abstract
A kind of brushless motor stator iron core including annular yoke portion and the multiple teeth being extended in its yoke portion to its axle center, has straight flange to position side on yoke portion outer ring, it positions the adjacent edge on side as arc-shaped side in yoke portion, and pole shoe angular region is at 80 ° -89.5 °；A kind of motor, including stator core, its stator core, through the rotor at stator core center, for the first support of fixed stator iron core and rotor tip, the circuit board being fixed in first support, be connected the second support of cooperation with first support, most inside profile is consistent with stator exterior profile and has outer straight flange and outer positioning side for its first support and second support inner wall, further include the iron core bracket of package stator core, the movable vane wheel being connected with rotor, its movable vane wheel of annular encirclement determines impeller, it is determined impeller and is connected in inside housing, housing is connected with second support, circuit board is also fixed in its first support.The installation positioning of the utility model stator core is convenient, and commutation ability is preferable in finite size, smaller.
Description
Technical field
The utility model is related to a kind of brushless motor stator iron core and brushless motors.
Background technology
With micro-machine mostly using brushless motor, such brushless motor main direction of studying is household electrical appliance currently on the market
Miniaturization, mute, have formed general design method and approved product at present, but due to the iron core of one of core component
Still have further design optimization space, in addition, in overall structure all parts shape and connection structure design there is also
Further improved space, such as there are following defects mostly for small-sized brushless motor currently on the market：Overall dimensions are bigger than normal, commutation property
Can still it optimize, stator dimensions are bigger than normal, the positioning of stator is not very convenient.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of brushless motor stator iron core, including annular
Yoke portion and the multiple teeth being extended in the yoke portion to its axle center, multiple teeth are uniform along yoke portion inner ring circumferencial direction
Distribution, which is characterized in that further including has positioning side on yoke portion outer ring, straight flange is in the side that positions, and in yoke portion the positioning side
Adjacent edge is arc-shaped side, and arc-shaped side forms pole shoe, and pole shoe angular region is at 80 ° -89.5 °.
Advantageous effect is：The utility model on yoke portion outer ring by being equipped with positioning side, and it is straight flange to position side, positions side
Adjacent edge for arc-shaped side, can realize smaller size of design, and by straight flange and the integrated positioning of arc-shaped side, realize more
It accurately positions, improves brushless motor commutation ability additionally by the setting at pole shoe angle.
Preferably, the tooth is arc tips close to the one end at stator core center, and is provided in the centre position of arc tips
Rectangular notch, the arc tips of multiple teeth are located on same circle.
Advantageous effect is：The rectangular notch can increase magnetic conduction.
Preferably, each arc tips each side there are one angle of strike, the angle of strike includes the first side, the
Two while and when the 3rd, described second while with described first and the 3rd side passes through round-corner transition.
Advantageous effect is：By using round-corner transition, in coiling, which can play guiding role, make copper
Line can smoothly be wound from the both sides of tooth, in addition can increase the security of coiling, avoid the damage of copper wire exterior insulation skin.
The invention also discloses a kind of brushless motors, which is characterized in that including above-mentioned any one brushless motor
Stator core, the rotor through stator core center, are fixed at the first support for fixed stator iron core and rotor tip
Circuit board on one stent, the second support for the cooperation that is connected with first support, profile on the inside of the first support and second support
It is consistent with stator exterior profile and have outer straight flange and outer positioning side, it further includes the iron core bracket of fixed stator iron core, consolidate with rotor
Movable vane wheel even, further includes the impeller of determining that annular surrounds the movable vane wheel, described to determine impeller and be connected in inside housing, the housing
It is connected with second support.
Advantageous effect is：Stator facilitates installation to position in the motor, and commutation ability is preferable in finite size, smaller
Stator and electrical machine.
Preferably, the first support, second support, iron core bracket, movable vane wheel, determine impeller, housing, stator core, turn
Son is revolving body and coaxially arranged.
Preferably, first support and second support are designed with metal inserted piece, and the metal inserted piece is loop configuration, the gold
Belonging to mold insert outer ring includes tooth form circle and cylindrical surface, and the diameter on the cylindrical surface is straight more than or less than the outside circle of the tooth form circle
Footpath, the metal inserted piece is inside the first support and second support.
Advantageous effect is：Metal inserted piece is loop configuration, and convenient for the assembling of bearing, outer ring is tied for tooth form circle and cylindrical surface
It closes, by the structure that is embedded with injection molding support, on the one hand prevents from when rotor from rotating metal inserted piece being driven to be rotated about axis, the opposing party
Face, cylindrical surface can limit metal inserted piece axially movable, prevent metal inserted piece from coming off out of injection molding support, and can be to avoid rotor
It generates and jumps when rotating, so as to reduce the noise of brushless motor.
Preferably, it is described to determine impeller and be connected with the first support, it is described to determine impeller and include wind blade, the blade of annular
The /V shelves that frame and lock-joint and vane frame protrusion wind blade are formed, the lock-joint is the notch being opened on the inside of vane frame, institute
First support is stated equipped with spacer pin, the notch is engaged with the spacer pin.
Advantageous effect is：Coordinated by the spacer pin set on the lock-joint and grid spacer that are set on the inside of vane frame, kept away
Exempt to determine impeller to be rotated around motor center axis because of tangential wind-force and vibrations, so as to which the circumference for effectively preventing determining impeller turns
Dynamic, brushless motor noise is less than motor noise at the same level, ensures the long-term low noise operation of brushless motor.
Description of the drawings
Fig. 1 is one of the preferred embodiment in the utility model stator core schematic diagram；
Fig. 2 is one of the preferred embodiment in the utility model stator core stereogram；
Fig. 3 is the preferred embodiment exploded perspective view of the utility model motor；
Fig. 4 is first support in-profile schematic diagram in the preferred embodiment of the utility model；
Fig. 5 is to determine impeller schematic diagram in the preferred embodiment of the utility model；
The structure diagram of Fig. 6 positions angle of strike；
Fig. 7 is the structure diagram of metal inserted piece；
Fig. 8 is the structure diagram of spacer pin；
Wherein：1- yokes portion, 2- positioning side, 3- arc-shaped sides, 4- teeth, 5- rectangular notches, 6- stator cores, 7- rotors, 8- the
One stent, 9- second supports, the outer straight flanges of 10-, 11- position side, 12- movable vane wheels outside, and 13- determines impeller, 14- housings, 15- circuits
Plate, 16- iron core brackets, 17- metal inserted pieces, 19- vane frames, 20- lock-joints, the first sides of 101-, the second sides of 102-, 103- the 3rd
Side, 104- fillets, 105- angle of strike, 201- tooth form circles, 202- cylindrical surfaces, 191- limiting blocks, 192- wind blades, 193- limits
Position pin.
Specific embodiment
The utility model provides a kind of brushless motor stator iron core, including annular yoke portion 1 and in yoke portion 1 to it
Multiple teeth 4 that axle center is extended, multiple teeth 4 are uniformly distributed along 1 inner ring circumferencial direction of yoke portion, and further including has on 1 outer ring of yoke portion
Side 2 is positioned, positioning side 2 is straight flange, the adjacent edge on side 2 is positioned in yoke portion 1 as arc-shaped side 3, arc-shaped side 3 forms pole shoe, pole shoe angle
Scope α is at 80 ° -89.5 °.
Advantageous effect is：The utility model on yoke portion outer ring by being equipped with positioning side, and it is straight flange to position side, positions side
Adjacent edge for arc-shaped side, can realize smaller size of design, and by straight flange and the integrated positioning of arc-shaped side, realize more
It accurately positions, improves brushless motor commutation ability additionally by the setting at pole shoe angle.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
Tooth 4 is arc tips close to the one end at stator core center, and rectangular notch 5 is provided in the centre position of arc tips, multiple teeth 4
Arc tips are located on same circle.
Advantageous effect is：The rectangular notch can increase magnetic conduction.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
Each arc tips each side there are one angle of strike 105, angle of strike 105 includes first at 101, second 102 and the 3rd
Side 103, second at 102 and first 101 and the 3rd side 103 pass through 104 transition of fillet.
Advantageous effect is：By using round-corner transition, in coiling, which can play guiding role, make copper
Line can smoothly be wound from the both sides of tooth, in addition can increase the security of coiling, avoid the damage of copper wire exterior insulation skin.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
The inner circle and the exradius difference in yoke portion that the arc tips of multiple teeth are formed are in the range of 12mm--23.5mm.
It is using the advantageous effect of above-mentioned technical proposal：Ensure to meet coiling demand while overall dimensions.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
Second side of the angle of strike of two adjacent teeth is mutually parallel, and the distance between second side of the angle of strike of two adjacent teeth is 2.5--
5mm。
It is using the advantageous effect of above-mentioned technical proposal：Meet coiling demand, while meet functional requirement, such as output power
Deng requirement.Further, the distance between second side of the angle of strike of two adjacent teeth is 3.7--4mm, can further improve and leads
Magnetic efficiency, particularly 3.88mm magnetic conductions are better.
The invention also discloses a kind of brushless motors, including above-mentioned any one brushless motor stator iron core 6, wear
Cross 6 center of stator core rotor 7, for 7 end of fixed stator iron core 6 and rotor first support 8, be fixed on first
Circuit board 15 on frame 8, the second support 9 for the cooperation that is connected with first support 8, first support 8 and 9 inside profile of second support with
6 exterior contour of stator is consistent and has outer straight flange 10 and outer positioning side 11, further include fixed stator iron core 6 iron core bracket 16, with
The connected movable vane wheel 12 of rotor 7, further include annular encirclement movable vane wheel 12 determines impeller 13, determines impeller 13 and is connected in housing 14
Portion, housing 14 are connected with second support 9.
Advantageous effect is：Stator facilitates installation to position in the motor, and commutation ability is preferable in finite size, smaller
Stator and electrical machine.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
First support 8, second support 9, movable vane wheel 12, determine impeller 13, housing 14, stator core 6, rotor 7 and are iron core bracket 16
Revolving body and coaxially arranged.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
First support 8 and second support 9 are designed with metal inserted piece 17, and metal inserted piece 17 is loop configuration, and 17 outer ring of metal inserted piece includes
Tooth form circle 201 and cylindrical surface 202, the diameter on cylindrical surface 202 are more than or less than the tip diameter of tooth form circle 201, metal inserted piece
17 inside first support 8 and second support 9.
Advantageous effect is：Metal inserted piece is loop configuration, and convenient for the assembling of bearing, outer ring is tied for tooth form circle and cylindrical surface
It closes, by the structure that is embedded with injection molding support, on the one hand prevents from when rotor from rotating metal inserted piece being driven to be rotated about axis, the opposing party
Face, cylindrical surface can limit metal inserted piece axially movable, prevent metal inserted piece from coming off out of injection molding support, and can be to avoid rotor
It generates and jumps when rotating, so as to reduce the noise of brushless motor.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
Metal inserted piece and injection molding support maintain an equal level or protrude from injection molding support.
It is using the advantageous effect of above-mentioned technical proposal：Convenient for assembling, it additionally is able to facilitate the work in injection molding process
Skill is implemented, and prevents metal inserted piece two sides from fully falling in axle center when causing cooling strain in injection molding support and misplacing.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
The tooth of metal inserted piece tooth form circle is involute teeth.
It is using the advantageous effect of above-mentioned technical proposal：Manufacture easy to process can directly machine embryo material with gear hobbing, from
It is dynamic, quick.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
Tooth form circle is two, and cylindrical surface diameter is less than the tip diameter of tooth form circle and between two tooth form circles, cuts metal inserted piece
Face shape is concave shape.
It is using the advantageous effect of above-mentioned technical proposal：Form automatic stuck, this structure one of both direction above and below on axis
Denier is entirely limited with will not more be loosened after injection molding support integrated injection molding except otherwise non-demolition can not then remove with reference to tooth form circle
Frame circumferentially and axially moves.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
The inner ring of metal inserted piece is provided with installation chamfering in lower edge.
It is using the advantageous effect of above-mentioned technical proposal：Convenient for the installation assembling before interference fit.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
The root diameter of tooth form circle is bigger more than 3mm than cylindrical surface diameter.
It is using the advantageous effect of above-mentioned technical proposal：External force drawing will not damage before ensureing assembling, and anti-pulling damage is strong
Degree is big.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
Injection molding support is spoke-like, and injection molding support includes centre mount and disc, and centre mount diameter is bigger 2mm than the tip diameter of tooth form circle
More than.
It is using the advantageous effect of above-mentioned technical proposal：It prevents from all increasing wanting for cooling temperature using injection platy structure
It asks or increases technology difficulty, prevent that metal inserted piece is crooked with parts of plastics cooling strain wherein.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
Centre mount inner ring is tooth form, and the tooth form of centre mount and the tooth form circle of metal inserted piece match.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
Cylindrical surface is equipped with several blind holes or waist round hole, and blind hole or waist round hole are uniformly distributed along cylindrical surface peripheral.
It is using the advantageous effect of above-mentioned technical proposal：Further make metal inserted piece and injection molding support shape in injection molding
It is positioned into more firm axial and circumferential, ensures that metal inserted piece is connected with injection molding support and more stablize, securely.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
Determine impeller 13 and be connected 8 with first support, determining impeller 13 includes wind blade 192, the vane frame 19 of annular and lock-joint 20 and leaf
Horse 19 protrudes the /V shelves 191 that wind blade 192 is formed, and lock-joint 20 is the notch being opened on the inside of vane frame, and first support is set
There is spacer pin 193, notch is engaged with spacer pin.
Advantageous effect is：Coordinated by the spacer pin set on the lock-joint and grid spacer that are set on the inside of vane frame, kept away
Exempt to determine impeller to be rotated around motor center axis because of tangential wind-force and vibrations, so as to which the circumference for effectively preventing determining impeller turns
Dynamic, brushless motor noise is less than motor noise at the same level, ensures the long-term low noise operation of brushless motor.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
Wind blade is uniformly arranged in vane frame and is integrated design, in by center, shape disperses to arrange radially outward.
It is using the advantageous effect of above-mentioned technical proposal：Preferably dredging flow makes airflow smooth be avoided by determining impeller
Increase vibrations and noise.In other specific embodiments of utility model, remaining is identical with the above embodiment, difference
It is in the void dimension formed between adjacent wind blade is 1-3mm, it is ensured that in finite structure space, downstream is with most
Soon, most smoothly mode is discharged.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
Wind blade cross sectional shape is " L " shape.
It is using the advantageous effect of above-mentioned technical proposal：Air-flow is prevented to determining random loss around wheel bottom, and then
Cause unnecessary vibrations and noise.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
Wind blade generally arc and tangent with the concentric circles of annular blade frame.
It is using the advantageous effect of above-mentioned technical proposal：Convenient for inciting somebody to action the direct loss of tangential derived air-flow.
In other specific embodiments of utility model, remaining is identical with the above embodiment, the difference is that,
Wind blade is cutting edge shape away from vane frame one side outer edge position.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications of these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (7)
1. a kind of brushless motor stator iron core is extended more including annular yoke portion and in the yoke portion to its axle center
A tooth, multiple teeth are uniformly distributed along yoke portion inner ring circumferencial direction, which is characterized in that further including on yoke portion outer ring has positioning
Side, straight flange is in the side that positions, and the adjacent edge on the positioning side is arc-shaped side in yoke portion, and arc-shaped side forms pole shoe, pole shoe angle model
It is trapped among 80 ° -89.5 °.
2. a kind of brushless motor stator iron core according to claim 1, which is characterized in that the tooth is in stator core
One end of the heart is arc tips, and rectangular notch is provided in the centre position of arc tips, and the arc tips of multiple teeth are positioned at same
On circle.
A kind of 3. brushless motor stator iron core according to claim 2, which is characterized in that the left and right of each arc tips
Both sides respectively there are one angle of strike, the angle of strike include first while, second while and the 3rd side, described second while with described first
Pass through round-corner transition with the 3rd side.
4. a kind of brushless motor, which is characterized in that including described in claim 1-3 any one brushless motor stator iron core,
Rotor through stator core center, for fixed stator iron core and rotor tip first support, be fixed on first support
Circuit board, be connected the second support of cooperation with first support, on the inside of the first support and second support profile with outside stator
Contouring is consistent and has outer straight flange and outer positioning side, the iron core bracket for further including fixed stator iron core, the movable vane being connected with rotor
Wheel, further includes the impeller of determining that annular surrounds the movable vane wheel, described to determine impeller and be connected in inside housing, the housing and second
Frame is connected.
5. a kind of brushless motor according to claim 4, which is characterized in that the first support, second support, iron core branch
Frame, movable vane wheel, to determine impeller, housing, stator core, rotor be revolving body and coaxially arranged.
6. a kind of brushless motor according to claim 4, which is characterized in that first support and second support are designed with metal
Mold insert, the metal inserted piece be loop configuration, the metal inserted piece outer ring include tooth form circle and cylindrical surface, the cylindrical surface it is straight
Footpath is more than or less than the tip diameter of the tooth form circle, and the metal inserted piece is in the first support and second support
Portion.
7. according to a kind of brushless motor described in claim 4 or 5, which is characterized in that described to determine impeller and first support company
It connects, it is described to determine the /V that impeller includes wind blade, the vane frame of annular and lock-joint and vane frame protrudes wind blade formation
Shelves, the lock-joint are the notch being opened on the inside of vane frame, and the first support is equipped with spacer pin, the notch and the spacer pin
It is engaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721180180.1U CN207398939U (en) | 2017-09-14 | 2017-09-14 | A kind of brushless motor stator iron core and brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721180180.1U CN207398939U (en) | 2017-09-14 | 2017-09-14 | A kind of brushless motor stator iron core and brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207398939U true CN207398939U (en) | 2018-05-22 |
Family
ID=62416223
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|---|---|---|---|
| CN201721180180.1U Expired - Fee Related CN207398939U (en) | 2017-09-14 | 2017-09-14 | A kind of brushless motor stator iron core and brushless motor |
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|---|---|
| CN (1) | CN207398939U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134458A (en) * | 2017-09-14 | 2018-06-08 | 炬大科技有限公司 | A kind of brushless motor stator iron core and brushless motor |
-
2017
- 2017-09-14 CN CN201721180180.1U patent/CN207398939U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134458A (en) * | 2017-09-14 | 2018-06-08 | 炬大科技有限公司 | A kind of brushless motor stator iron core and brushless motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180522 Termination date: 20200914 |