CN101527480A - Brushless electric motor insulation rotor and manufacture method thereof - Google Patents
Brushless electric motor insulation rotor and manufacture method thereof Download PDFInfo
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- CN101527480A CN101527480A CN200910095688A CN200910095688A CN101527480A CN 101527480 A CN101527480 A CN 101527480A CN 200910095688 A CN200910095688 A CN 200910095688A CN 200910095688 A CN200910095688 A CN 200910095688A CN 101527480 A CN101527480 A CN 101527480A
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- rotor
- electric motor
- brushless electric
- armature spindle
- insulation
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Abstract
The invention discloses a brushless electric motor insulation rotor and a manufacture method thereof, resolving the current problems that the rotor shaft accuracy requirement for the arrangement of insulating bush is high and the shift between a rotor and a rotor shaft is easy to occur. For the brushless electric motor insulation rotor, an insulating layer is arranged at the gap between the rotor and the rotor shaft, the two ends of the insulating layer are provided with insulating pads which are connected with the two ends of the rotor; the insulating rotor is manufactured according to the following method: 1) sheathing rotor 1 at the rotor shaft 2 followed by being put into a die; 2) pouring insulant into the gap between the rotor 1 and the rotor shaft 2 by an injection machine; and 3) cooling and taking out the whole. The invention has the advantages of firm structure, high safety and reliability, relatively low rotor shaft accuracy requirement, reduced manufacture cost and improved productivity, in addition, the invention prevents the shift between the rotor and the rotor shaft from occurring and enhances the overall safety of the brushless electric motor.
Description
Technical field
The present invention relates to a kind of brushless electric motor insulation rotor and manufacture method thereof.
Background technology
Voltage is higher than the above brushless electric machine of 36V and is applied to fields such as mobile device, handheld tool, table tool, does not have the axle insulation to be easy to generate electric leakage, and jeopardizes user's personal safety.
People are provided with an insulating sleeve between rotor and armature spindle now, earlier with rotor axle sleeve in insulating sleeve, sheathed rotor outside insulating sleeve again, such setting is because the thickness of insulating sleeve is done in advance, so the required precision to armature spindle is higher, if armature spindle is too small, then rotor can not rotate together with armature spindle, and when armature spindle was subjected to axial force, rotor was sent out easily into axial endplay; If armature spindle is excessive, then insulating sleeve and armature spindle can not normally cooperate, and insulating sleeve is broken, and lose insulation effect.
Summary of the invention
The object of the present invention is to provide a kind of brushless electric motor insulation rotor and manufacture method thereof, can effectively solve and insulating case is set at present, send out problem between rotor and the armature spindle easily into play to armature spindle required precision height.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: a kind of brushless electric motor insulation layer manufacturing method, comprise rotor and armature spindle, and it is characterized in that: may further comprise the steps:
1) rotor is enclosed within on the armature spindle, puts into mould;
2) with injection molding machine insulating material is injected gap between rotor and the armature spindle;
3) after the cooling, integral body is taken out.
With a kind of brushless electric motor insulation rotor that said method produces, the gap between described rotor and the armature spindle is provided with insulating barrier; Insulating barrier with the injection moulding mode is provided with can closely contact with armature spindle with rotor, is difficult for loosening.
Preferably, described insulating barrier two ends are provided with the insulation boss, and described insulation boss is connected with the two ends of rotor; Prevent that play from axially appearring in rotor when motion.
Preferably, described rotor is provided with the magnet steel groove of some insertion magnet steel, and the radius of described insulation boss is greater than 1.15 times armature spindle radius and less than the distance of magnet steel trench bottom to the armature spindle center; Undersized boss insufficient strength, the oversize magnet steel that influences is packed in the magnet steel groove.
Preferably, described thickness of insulating layer is greater than 1 millimeter; Just can play the good insulation performance effect greater than 1 millimeter.
Preferably, described insulating barrier and insulation boss are single injection-molded; Single injection-molded, good reliability.
Compared with prior art, advantage of the present invention is: Stability Analysis of Structures, and safe and reliable, lower to the armature spindle required precision, reduced production cost, improved production efficiency, and the problem of rotor and armature spindle play can not take place, improved the brushless electric machine overall security.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of a kind of brushless electric motor insulation rotor of the present invention;
Fig. 2 is the half sectional view of a kind of brushless electric motor insulation rotor of the present invention;
Embodiment
A kind of brushless electric motor insulation rotor, comprise rotor 1, armature spindle 2 and insulating barrier 3, described rotor 1 is connected by insulating barrier 3 with armature spindle 2, described insulating barrier 3 two ends are provided with insulation boss 31, and described insulation boss 31 is connected with the two ends of rotor, and described rotor is provided with the magnet steel groove 11 of some insertion magnet steel, the radius of described insulation boss 31 is greater than 1.15 times armature spindle 2 radiuses and less than the distance of magnet steel groove 11 bottoms to armature spindle 2 centers, thickness of insulating layer is 1.5 millimeters.
Above-mentioned insulation rotor is produced in accordance with the following methods: 1) rotor 1 is enclosed within on the armature spindle 2, puts into mould; 2) with injection molding machine insulating material is injected gap between rotor 1 and the armature spindle 2; 3) after the cooling, integral body is taken out.Described insulating layer material contains the insulating material that lid is applicable to injection molding machine and can meets safety standard.
The above only is the specific embodiment of the best of the present invention, but architectural feature of the present invention is not limited thereto, and any those skilled in the art is in the field of the invention, and the variation of being done or modify all is encompassed among the claim of the present invention.
Claims (6)
1. a brushless electric motor insulation layer manufacturing method comprises rotor (1) and armature spindle (2), it is characterized in that: may further comprise the steps:
1) rotor (1) is enclosed within on the armature spindle (2), puts into mould;
2) with injection molding machine insulating material is injected gap between rotor (1) and the armature spindle (2);
3) after the cooling, integral body is taken out.
2. a kind of brushless electric motor insulation rotor that adopts the described method of claim 1 to produce, it is characterized in that: the gap between described rotor (1) and the armature spindle (2) is provided with insulating barrier (3).
3. a kind of brushless electric motor insulation rotor as claimed in claim 2 is characterized in that: described insulating barrier (3) two ends are provided with insulation boss (31), and described insulation boss (31) is connected with the two ends of rotor (1).
4. a kind of brushless electric motor insulation rotor as claimed in claim 3, it is characterized in that: described rotor is provided with the magnet steel groove (11) of some insertion magnet steel, and the radius of described insulation boss (31) is greater than 1.15 times armature spindle (2) radius and less than the distance of magnet steel groove (11) bottom to armature spindle (2) center.
5. as claim 2 or 3 described a kind of brushless electric motor insulation rotors, it is characterized in that: described insulating barrier (3) thickness is greater than 1 millimeter.
6. a kind of brushless electric motor insulation rotor as claimed in claim 3 is characterized in that: described insulating barrier (3) and insulation boss (31) are single injection-molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910095688A CN101527480A (en) | 2009-01-15 | 2009-01-15 | Brushless electric motor insulation rotor and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910095688A CN101527480A (en) | 2009-01-15 | 2009-01-15 | Brushless electric motor insulation rotor and manufacture method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101527480A true CN101527480A (en) | 2009-09-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910095688A Pending CN101527480A (en) | 2009-01-15 | 2009-01-15 | Brushless electric motor insulation rotor and manufacture method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101527480A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787311A (en) * | 2016-11-24 | 2017-05-31 | 广东威灵电机制造有限公司 | Rotor and motor |
| CN107492965A (en) * | 2017-09-11 | 2017-12-19 | 广东威灵电机制造有限公司 | Insulation rotor and motor |
| CN107634598A (en) * | 2017-09-30 | 2018-01-26 | 广东威灵电机制造有限公司 | Rotor and motor |
-
2009
- 2009-01-15 CN CN200910095688A patent/CN101527480A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787311A (en) * | 2016-11-24 | 2017-05-31 | 广东威灵电机制造有限公司 | Rotor and motor |
| CN107492965A (en) * | 2017-09-11 | 2017-12-19 | 广东威灵电机制造有限公司 | Insulation rotor and motor |
| CN107492965B (en) * | 2017-09-11 | 2020-06-30 | 广东威灵电机制造有限公司 | Insulating rotor and motor |
| CN107634598A (en) * | 2017-09-30 | 2018-01-26 | 广东威灵电机制造有限公司 | Rotor and motor |
| CN107634598B (en) * | 2017-09-30 | 2019-11-15 | 广东威灵电机制造有限公司 | Rotor and motor |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Open date: 20090909 |