CN108988541A - A kind of drag cup brushless motor of injection molding protection - Google Patents
A kind of drag cup brushless motor of injection molding protection Download PDFInfo
- Publication number
- CN108988541A CN108988541A CN201810882724.1A CN201810882724A CN108988541A CN 108988541 A CN108988541 A CN 108988541A CN 201810882724 A CN201810882724 A CN 201810882724A CN 108988541 A CN108988541 A CN 108988541A
- Authority
- CN
- China
- Prior art keywords
- stator
- enameled wire
- injection molding
- glass
- polybutylene terephthalate
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/47—Air-gap windings, i.e. iron-free windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
A kind of drag cup brushless motor of injection molding protection; belong to specific type of electric machine technical field; it is made of cupuliform outer rotor, inner stator and axis, it is characterised in that: the stator punching of inner stator has the riveted holes of prime number alignment, and is stator core using rivet hole riveting assembly；It dipping lacquer and is dried after the groove edge chamfering of stator core；The enameled wire cross section is rectangle, and enameled wire is inserted into stator slot after being shaped to U-shaped.Stator coil is handled by Shooting Technique, the Shooting Technique is press machine implantation glass fiber-reinforced polybutylene terephthalate into injection mold, Glass-fiber-reinforcpolybutylene polybutylene terephthalate is mixed into the Glass Fiber Reinforcement that mass ratio is 10%-40% and is modified, and preferably 30%.After supercooling, Glass-fiber-reinforcpolybutylene polybutylene terephthalate is finally solidified as thermally conductive hardened plastic.Technology of the invention makes stator highly reliable, heat-proof water, bases, acids, oils, will not wear short circuit because of vibration between each enameled wire.
Description
Technical field
The present invention relates to a kind of drag cup brushless motors of injection molding protection, belong to specific type of electric machine technical field.
Background technique
Drag cup brushless motor breaches the rotor structure form of conventional motors in structure, turns using iron-core-free
Son.Drag cup brushless electric motor rotor low rotor inertia, slotless, low friction and very compact exchange system, these advantages will
Bring faster acceleration, higher efficiency, lower joule loss and bigger lasting torque.
Drag cup brushless motor overall volume is small, alleviate weight and reduces calorific value, therefore is portable or small-sized sets
The ideal chose in the similar applications field such as standby.It just realizes in this way and obtains superior motor in a smaller rack
Performance, to provide better comfort level and convenience.In addition, automobile etc. with storage battery power supply application in, drag cup without
Brush motor can also extend the service life of equipment and improve energy efficiency.
There are many introductions about drag cup brushless motor, such as patent of invention for existing technology: a kind of hollow-cup motor,
Publication No.: 107306073 A of CN discloses a kind of hollow-cup motor magnet ring, and the magnet ring is by several magnetic patch according to Halbach battle array
Column are arranged in a combination.
In addition, undeniable be, the prior art is about the method for winding casting protection, such as patent of invention one
The poured with epoxy resin technique of kind electric motor electron winding, Patent publication No CN107276342A disclose a kind of electronic electromechanics
The poured with epoxy resin technique of sub- winding, specifically takes three steps, and this method is that this application provides parts to enlighten really.
But this method relates merely to how to be poured, there is no the enlightenments about winding, silicon steel sheet, casting formula and curing process.
Existing motor can generate a large amount of heat when operating, can be to stator and machine when the heat transfer to stator is with casing
Shell causes different dilations, more or less will appear gap in winding additionally, due to coil, so that have loosening between coil,
In motor operation course, stator coil will appear vibration, be easy to produce failure of insulation and short-circuit.
Summary of the invention
For solving the above problems, the invention proposes a kind of drag cup brushless motors of injection molding protection, by turning outside cupuliform
Son, inner stator and axis composition, it is characterised in that:
The stator punching of inner stator has the riveted holes of prime number alignment, and is stator core using rivet hole riveting assembly；It is fixed
It dipping lacquer and is dried after the groove edge chamfering of sub- iron core.
Cupuliform outer rotor is fixed on axis.
Enameled wire turns to stator coil around stator teeth, and distance of the stator coil apart from stator outer circle is 3 mm -5mm,
Adjacent stators coil around to opposite.
The enameled wire cross section is rectangle, and enameled wire is inserted into stator slot after being shaped to U-shaped；The U-shaped enameled wire of same-phase
End be connected together using Resistance Welding.
The width of the stator slot is 0.4mm -0.8mm wider than the length of enameled wire cross section rectangle.
Stator coil is handled by Shooting Technique, and the Shooting Technique is press machine implantation glass fiber into injection mold
Enhance polybutylene terephthalate (PBT), it is 10%-40% that Glass-fiber-reinforcpolybutylene polybutylene terephthalate, which is mixed into mass ratio,
Glass Fiber Reinforcement it is modified, preferably 30%.
After supercooling, Glass-fiber-reinforcpolybutylene polybutylene terephthalate is finally solidified as thermally conductive hardened plastic, leads
Heat-curing plastic surrounds enameled wire completely, and exposes stator tooth.
Cooling procedure after injection molding are as follows: open injection mold after injection molding, be dried in 85 DEG C of hot-air；Such as
Fruit humidity is greater than 0.2%, it is also necessary to carry out 105 DEG C, vacuum drying in 12 hours；Glass fiber reinforced polyamide 66 finally solidifies
For thermally conductive hardened plastic.
Compared to existing motor stator structure, the present invention has remarkable advantage and beneficial effect, embodies are as follows:
Stator entirety heat-proof water, bases, acids, oils；
It can be crystallized rapidly under low temperature, good forming ability；
It is modified to be mixed into Glass Fiber Reinforcement, tensile strength, bending strength are enhanced about more than once, and heat distortion temperature also substantially mentions
It is high；
Can the long-term work at 140 DEG C, product vertical, horizontal shrinking percentage is inconsistent after fiberglass reinforced, is not easy to stick up product
It is bent；
Stator after injection molding is dried in 80 DEG C of hot-air, is not affected by temperature deformation；
Rectangle enameled wire internal resistance is small, and gap is few and big between winding, easily infiltrates into injected plastics material, will not be because between each enameled wire
Short circuit is worn for vibration；
The not traditional insulating paper of stator slot will not generate wearout caused by vibration rubs.
Detailed description of the invention
Fig. 1 is the drag cup brushless motor embodiment one of present invention injection molding protection.
Fig. 2 is the drag cup brushless motor embodiment two of present invention injection molding protection.
Fig. 3 is the injection moulded stator manufacturing method of present invention injection molding protection.
In above-mentioned figure, 1, Glass-fiber-reinforcpolybutylene polybutylene terephthalate, 2, stator coil, 3, stator core；4,
Outer rotor.
Specific embodiment
Specific implementation method of the invention is as follows:
The drag cup brushless motor embodiment one of present invention injection molding protection as shown in Figure 1, is molded the drag cup brushless motor of protection
It is made of cupuliform outer rotor, inner stator and axis, the stator punching of inner stator has the riveted holes of prime number alignment, and utilizes rivet
Hole riveting assembly is stator core；It dipping lacquer and is dried after the groove edge chamfering of stator core.
Cupuliform outer rotor is fixed on axis.
Enameled wire turns to stator coil around stator teeth, and distance of the stator coil apart from stator outer circle is 3 mm -5mm,
Adjacent stators coil around to opposite.
The enameled wire cross section is rectangle, and enameled wire is inserted into stator slot after being shaped to U-shaped；The U-shaped enameled wire of same-phase
End be connected together using Resistance Welding.
The width of the stator slot is 0.4mm -0.8mm wider than the length of enameled wire cross section rectangle.Protection scope is molded to contain
It has covered on the inside of stator.
If Fig. 2 present invention is molded the drag cup brushless motor embodiment two of protection, injection molding protection scope is only limitted to nail line
Circle, the inside of stator core are not injection molding material encirclement.
Fig. 3 is the injection moulded stator manufacturing method of present invention injection molding protection, is comprised the concrete steps that:
The stator punching of inner stator is stamped out first, and the riveted holes of prime number alignment are set on stator punching, and utilize
Rivet hole riveting assembly is stator core；
Secondly, by dipping lacquer after the groove edge chamfering of stator core and drying, the insulation between silicon steel sheet and enameled wire is realized.
Again, stator coil is subjected to Shooting Technique processing, the Shooting Technique is that press machine is injected into injection mold
Glass-fiber-reinforcpolybutylene polybutylene terephthalate, Glass-fiber-reinforcpolybutylene polybutylene terephthalate are mixed into mass ratio and are
The Glass Fiber Reinforcement of 10%-40% is modified, and preferably 30%.
Finally, injected plastics material is cooled to thermally conductive hardened plastic.After supercooling, glass fiber reinforced polyester terephthalic acid (TPA)
Butanediol ester is finally solidified as thermally conductive hardened plastic, and thermally conductive hardened plastic surrounds enameled wire completely, and exposes stator tooth.
Cooling procedure after injection molding are as follows: open injection mold after injection molding, be dried in 85 DEG C of hot-air；Such as
Fruit humidity is greater than 0.2%, it is also necessary to carry out 105 DEG C, vacuum drying in 12 hours；Glass fiber reinforced polyamide 66 finally solidifies
For thermally conductive hardened plastic.
Claims (2)
1. a kind of drag cup brushless motor of injection molding protection, is made of cupuliform outer rotor, inner stator and axis, it is characterised in that:
The stator punching of inner stator has the riveted holes of prime number alignment, and is stator core using rivet hole riveting assembly；It is fixed
It dipping lacquer and is dried after the groove edge chamfering of sub- iron core；
Cupuliform outer rotor is fixed on axis；
Enameled wire turns to stator coil around stator teeth, and distance of the stator coil apart from stator outer circle is 3 mm -5mm, adjacent
Stator coil around to opposite；
The enameled wire cross section is rectangle, and enameled wire is inserted into stator slot after being shaped to U-shaped；The end of the U-shaped enameled wire of same-phase
End is connected together using Resistance Welding；
The width of the stator slot is 0.4mm -0.8mm wider than the length of enameled wire cross section rectangle；
Stator coil is handled by Shooting Technique, and the Shooting Technique is press machine implantation glass fiber reinforcement into injection mold
Polybutylene terephthalate (PBT), Glass-fiber-reinforcpolybutylene polybutylene terephthalate are mixed into the glass that mass ratio is 10%-40%
Glass fiber enhancer is modified, and preferably 30%；
After supercooling, Glass-fiber-reinforcpolybutylene polybutylene terephthalate is finally solidified as thermally conductive hardened plastic, thermally conductive solid
Change plastics and surround enameled wire completely, and exposes stator tooth.
2. a kind of drag cup brushless motor of injection molding protection as described in claim 1, which is characterized in that cooled after injection molding
Journey are as follows: open injection mold after injection molding, be dried in 85 DEG C of hot-air；If humidity is greater than 0.2%, it is also necessary to
105 DEG C are carried out, vacuum drying in 12 hours；Glass fiber reinforced polyamide 66 is finally solidified as thermally conductive hardened plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810882724.1A CN108988541A (en) | 2018-08-06 | 2018-08-06 | A kind of drag cup brushless motor of injection molding protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810882724.1A CN108988541A (en) | 2018-08-06 | 2018-08-06 | A kind of drag cup brushless motor of injection molding protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108988541A true CN108988541A (en) | 2018-12-11 |
Family
ID=64555736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810882724.1A Withdrawn CN108988541A (en) | 2018-08-06 | 2018-08-06 | A kind of drag cup brushless motor of injection molding protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108988541A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1413823A (en) * | 2001-10-19 | 2003-04-30 | 住友重机械工业株式会社 | Injection moulding machine and protection method for the injection moulding machine |
| CN102504497A (en) * | 2011-09-28 | 2012-06-20 | 哈尔滨中大型材科技股份有限公司 | Modified PBT material and preparation method thereof |
| CN102934336A (en) * | 2010-06-10 | 2013-02-13 | 丰田自动车株式会社 | Stator manufacturing method and stator |
| CN105162293A (en) * | 2015-09-29 | 2015-12-16 | 哈尔滨东安发动机（集团）有限公司 | Motor stator core processing method |
| CN107306074A (en) * | 2016-04-25 | 2017-10-31 | 深圳市科卫泰实业发展有限公司 | A kind of drag cup brushless electric machine |
| CN207117343U (en) * | 2017-08-22 | 2018-03-16 | 锦州富山密封科技有限公司 | New-energy automobile is molded winding with permasyn morot |
-
2018
- 2018-08-06 CN CN201810882724.1A patent/CN108988541A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1413823A (en) * | 2001-10-19 | 2003-04-30 | 住友重机械工业株式会社 | Injection moulding machine and protection method for the injection moulding machine |
| CN102934336A (en) * | 2010-06-10 | 2013-02-13 | 丰田自动车株式会社 | Stator manufacturing method and stator |
| CN102504497A (en) * | 2011-09-28 | 2012-06-20 | 哈尔滨中大型材科技股份有限公司 | Modified PBT material and preparation method thereof |
| CN105162293A (en) * | 2015-09-29 | 2015-12-16 | 哈尔滨东安发动机（集团）有限公司 | Motor stator core processing method |
| CN107306074A (en) * | 2016-04-25 | 2017-10-31 | 深圳市科卫泰实业发展有限公司 | A kind of drag cup brushless electric machine |
| CN207117343U (en) * | 2017-08-22 | 2018-03-16 | 锦州富山密封科技有限公司 | New-energy automobile is molded winding with permasyn morot |
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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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181211 |