CN105720781A - PM stepper motor stator and manufacturing method thereof - Google Patents
PM stepper motor stator and manufacturing method thereof Download PDFInfo
- Publication number
- CN105720781A CN105720781A CN201410720281.8A CN201410720281A CN105720781A CN 105720781 A CN105720781 A CN 105720781A CN 201410720281 A CN201410720281 A CN 201410720281A CN 105720781 A CN105720781 A CN 105720781A
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- CN
- China
- Prior art keywords
- pole pawl
- pawl
- claw
- motor stator
- blade tooth
- 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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Abstract
The invention relates to a PM stepper motor stator and a manufacturing method thereof. The stator comprises an upper polar claw, a lower polar claw and an enameled wire. After the upper polar claw and the lower polar claw are injection-molded as one through an injection molding material, a polar claw is formed. The enameled wire is wound on the polar claw in a radial manner. The PM stepper motor stator is characterized in that the claw tooth ends of the upper polar claw and the lower polar claw are respectively provided with a step part; and the injection molding material packages the step parts of the claw teeth of the upper polar claw and the lower polar claw to fix the radial position and deformation of the claw teeth of the polar claw. Compared with prior art, the PM stepper motor stator is advantageous in that through arranging the step on the end of the teeth of the polar claw, the polar claw is packaged by plastic during manufacture of the stator, and the polar claw is thoroughly prevented from twisting and deforming.
Description
Technical field
The present invention relates to a kind of motor stator, especially relate to a kind of PM step motor stator and manufacture method thereof.
Background technology
PM motor is a kind of rotor is the rotary stepped machine of permanent magnet, and its stator is for and integrally being completed by the combination of plastic mould injection moulding plastic particle by upper and lower two pole pawls, then radial windings frame mode.Blade tooth portion, existing pole is because of without step, so fixing without position in a radially inward direction, when processing technology, the stress of residual also cuts down its intensity, pole pawl is after punching drawing and forming, bottom tooth there is stress in R angle place, pressure that plastic pellet injects is had when plastic mould makes the process of stator and the inferior impact of mould hot environment strengthens residual stress further putting into, the radial envelope power bearing line is had during stator winding, after making motor, owing to having under the multifactor impacts such as the stress alternation of heating high temperature and magnetic pull when motor runs, when above several inside and outside make a concerted effort more than pole pawl stress time, have pole pawl at radial direction torsional deformation inside, deformation ledge and the friction of rotor outer circle face, motor is caused to run stuck exception.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and a kind of PM step motor stator and manufacture method thereof are provided.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of PM step motor stator, including upper pole pawl, lower pole pawl and enamel-covered wire, described upper pole pawl and lower pole pawl form pole pawl after being injection molded into one by injected plastics material, described enamel-covered wire is radially about on the pawl of pole, it is characterized in that, the blade tooth end of described upper pole pawl and lower pole pawl is provided with stage portion, and described injected plastics material encases pole pawl and the blade tooth stage portion of lower pole pawl, for position and the deformation of fixed pole pawl blade tooth radial direction, thoroughly prevent torsional deformation.
Described stage portion is radially arranged inwardly.
The L-shaped structure of described stage portion.
The height of described stage portion is the 1/10 to 1/5 of blade tooth height.
The manufacture method of PM step motor stator of the present invention, comprises the following steps:
(1) the blade tooth end of upper pole pawl and lower pole pawl is extruded a step；
(2) upper pole pawl and lower pole pawl being integrally combined formation pole pawl putting into injection mold injection moulding, wherein plastic particles encases lower pole pawl and the blade tooth step part of upper pole pawl；
(3) on the pawl of pole, it is fabricated to stator radially about enamel-covered wire.
Compared with prior art, the present invention, by extruding step on blade tooth end, pole, is encased by plastic rubber shaping when making stator, thoroughly prevents its pole pawl torsional deformation.
Accompanying drawing explanation
Fig. 1 is motor cross section view；
Fig. 2 is stator cross section view；
Fig. 3 is the part A partial enlarged drawing in Fig. 2；
Fig. 4 is stator strabismus stereogram；
Fig. 5 is rank stator poles pawl structural representation of presenting a theatrical performance as the last item on a programme；
Fig. 6 is not for presenting a theatrical performance as the last item on a programme rank stator poles pawl structural representation；
Wherein 1 is rotor, and 2 is stator, and 3 is casing, and 4 is injected plastics material, and 5 is lower pole pawl, and 6 is upper pole pawl, and 7 is enamel-covered wire.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figures 2 and 4, a kind of PM step motor stator, including upper pole pawl 6, lower pole pawl 5 and enamel-covered wire 7, described upper pole pawl 6 and lower pole pawl 5 form pole pawl after being injection molded into one by injected plastics material 4, described enamel-covered wire 7 is radially about on the pawl of pole, described upper pole pawl 6 and the blade tooth end of lower pole pawl 5 are provided with stage portion, and described injected plastics material encases pole pawl 6 and the blade tooth stage portion of lower pole pawl 5, for position and the deformation of fixed pole pawl blade tooth radial direction.
Described stage portion is radially arranged inwardly.The L-shaped structure of described stage portion.The height of described stage portion is the 1/10 to 1/5 of blade tooth height, and optimum is 1/8.
The manufacture method of PM step motor stator of the present invention, comprises the following steps:
(1) the blade tooth end of upper pole pawl 6 and lower pole pawl 5 is extruded a step；
(2) upper pole pawl 6 and lower pole pawl 5 being integrally combined formation pole pawl putting into injection mold injection moulding, wherein plastic particles encases lower pole pawl and the blade tooth step part of upper pole pawl；
(3) on the pawl of pole, it is fabricated to stator radially about enamel-covered wire.
As it is shown in figure 5, blade tooth end, pole extrudes a step；Under stator, on pole pawl 5 and stator, the pole pawl 6 parts of plastics 4 in putting into injection mold and stator integrally combines, then radial windings is fabricated to stator 2 again, the plastic particles of the parts of plastics 4 in its stator encases under stator pole pawl 6 tooth upper step part on pole pawl 5 and stator, secure pole blade tooth in radial direction position and deformation, thoroughly prevent torsional deformation, such as Fig. 3.
Claims (5)
1. a PM step motor stator, including upper pole pawl, lower pole pawl and enamel-covered wire, described upper pole pawl and lower pole pawl form pole pawl after being injection molded into one by injected plastics material, described enamel-covered wire is radially about on the pawl of pole, it is characterized in that, the blade tooth end of described upper pole pawl and lower pole pawl is provided with stage portion, and described injected plastics material encases pole pawl and the blade tooth stage portion of lower pole pawl, for position and the deformation of fixed pole pawl blade tooth radial direction.
2. a kind of PM step motor stator according to claim 1, it is characterised in that described stage portion is radially arranged inwardly.
3. a kind of PM step motor stator according to claim 1, it is characterised in that the L-shaped structure of described stage portion.
4. a kind of PM step motor stator according to claim 1, it is characterised in that the height of described stage portion is the 1/10 to 1/5 of blade tooth height.
5. the method for the PM step motor stator described in a manufacturing claims 1, it is characterised in that include
(1) the blade tooth end of upper pole pawl and lower pole pawl is extruded a step；
(2) upper pole pawl and lower pole pawl being integrally combined formation pole pawl putting into injection mold injection moulding, wherein plastic particles encases lower pole pawl and the blade tooth step part of upper pole pawl；
(3) on the pawl of pole, it is fabricated to stator radially about enamel-covered wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410720281.8A CN105720781A (en) | 2014-12-02 | 2014-12-02 | PM stepper motor stator and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410720281.8A CN105720781A (en) | 2014-12-02 | 2014-12-02 | PM stepper motor stator and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105720781A true CN105720781A (en) | 2016-06-29 |
Family
ID=56145355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410720281.8A Pending CN105720781A (en) | 2014-12-02 | 2014-12-02 | PM stepper motor stator and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105720781A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0417542A (en) * | 1990-05-08 | 1992-01-22 | Brother Ind Ltd | Structure of motor stator |
| CN2394368Y (en) * | 1999-09-06 | 2000-08-30 | 兴建东科技精密工业股份有限公司 | Step motor stator with multiple poles |
| JP2013009543A (en) * | 2011-06-27 | 2013-01-10 | Hitachi Industrial Equipment Systems Co Ltd | Method of molding green compact |
| CN102884713A (en) * | 2010-05-06 | 2013-01-16 | 标立电机有限公司 | Pump having an integrated electronically commutated direct-current motor |
| CN204258585U (en) * | 2014-12-02 | 2015-04-08 | 上海鸣志电器股份有限公司 | A kind of PM step motor stator |
-
2014
- 2014-12-02 CN CN201410720281.8A patent/CN105720781A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0417542A (en) * | 1990-05-08 | 1992-01-22 | Brother Ind Ltd | Structure of motor stator |
| CN2394368Y (en) * | 1999-09-06 | 2000-08-30 | 兴建东科技精密工业股份有限公司 | Step motor stator with multiple poles |
| CN102884713A (en) * | 2010-05-06 | 2013-01-16 | 标立电机有限公司 | Pump having an integrated electronically commutated direct-current motor |
| JP2013009543A (en) * | 2011-06-27 | 2013-01-10 | Hitachi Industrial Equipment Systems Co Ltd | Method of molding green compact |
| CN204258585U (en) * | 2014-12-02 | 2015-04-08 | 上海鸣志电器股份有限公司 | A kind of PM step motor stator |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160629 |
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| RJ01 | Rejection of invention patent application after publication |