CN1612447A - Linear electric motor stator assembly - Google Patents
Linear electric motor stator assembly Download PDFInfo
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- CN1612447A CN1612447A CN 200310106783 CN200310106783A CN1612447A CN 1612447 A CN1612447 A CN 1612447A CN 200310106783 CN200310106783 CN 200310106783 CN 200310106783 A CN200310106783 A CN 200310106783A CN 1612447 A CN1612447 A CN 1612447A
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Abstract
Stator subassembly comprises outer stator and inner stator. The outer stator comprises winding body, several magnetism core bodies, two pieces of pole seats and retaining ring of magnetic core. The said winding body appears in hollow annular form and winding is imbedded inside the winding body. The body of magnetic core stacked from sheet of magnetic core of stator is inserted into lateral surface of winding body along radial direction. Pole seats are inserted into two sides of inner circle in winding body, and outer circumferential surface is contacted with inner end face of each magnetism core body. Retaining ring of magnetism core tightens on outer end face of each magnetism core body. Advantages are: reasonable structure, simplifying technique for assembling magnetism core so as to lower preparing cost and raise reliability of product.
Description
Technical field
The present invention relates to a kind of linear electric motors, particularly relate to a kind of stator module of linear electric motors.
Background technology
Linear electric motors are a kind of devices that electric energy are directly changed into oscillating rectilinear motion mechanical energy.Linear electric motors generally comprise stator and mover, and mover is made oscillating rectilinear motion under the effect of the variation magnetic field that stator produces.
In linear electric motors, stator module is made up of external stator cylindraceous and internal stator, has certain interval between external stator and the internal stator; Mover assembly is installed between external stator and the internal stator; On described external stator or the internal stator coil is installed; On the position corresponding to stator coil on the mover assembly, magnet is installed; Magnet on the mover assembly drives mover assembly and makes oscillating rectilinear motion under the action of a magnetic field that stator coil produces.
Fig. 1 is the cutaway view of existing linear electric motors; Fig. 2 is the front view of existing linear electric motors; Fig. 3 is existing linear electric motors partial enlarged drawings under assembled state.
As depicted in figs. 1 and 2, existing linear electric motors comprise stator module 10 and mover assembly 20; The magnetic field that stator module 10 is used for changing, mover assembly 20 is following in the effect of the variation magnetic field that stator module 10 produces, and makes oscillating rectilinear motion.
Described stator module 10 is made up of external stator 11 and internal stator 12; External stator 11 cylindrical shapes, the inboard of external stator 11 embeds coil C, the also cylindrical shape of internal stator 12; External stator 11 is enclosed within the outside of internal stator 12, leaves certain interval between the two.
Described external stator 11 is made up of winding body 11a, several magnetic core arrays 11b and moulding bodies 11c; Be inlaid with coil C on the winding body 11a; These magnetic core arrays 11b is formed by stacking by the stator magnet chip respectively, is separately positioned on the outside of winding body 11a, and winding body 11a is clipped in the middle; Moulding bodies 11c is fixed on the connecting portion molding of magnetic core array 11b on the winding body 11a.
Described winding body 11a is toroidal, is made by insulating material such as plastics.
Described magnetic core array 11b has " positive hook " and corresponding with it " anti-hook ", is clipped in the both sides of winding body 11a respectively.
Described moulding bodies 11c is formed by insulating material epoxy resin, the outer circumference surface of winding body 11a and the connecting portion of magnetic core array 11b can be fixed together.
Described mover assembly 20 is made up of magnet framework 21 and magnet 22; Magnet framework 21 is arranged between external stator 11 and the internal stator 12; Magnet 22 is arranged on the outer circumference surface of magnet framework 21 equally spacedly, and its position is corresponding with the coil C of stator module 10.
The course of work to above-mentioned existing linear electric motors is illustrated below:
After the linear electric motors energising starts, electric current among the coil C produces the variation magnetic field of closo between external stator 11 and internal stator 12, change along with the sense of current among the coil C, the direction of variation magnetic field also changes thereupon, magnet 22 drives magnet framework 21 and whole mover assembly 20 and makes reciprocating type straight line back and forth movement vertically under the effect of this variation magnetic field.
In order to make this linear electric motors, at first need to go out many and have " positive hook " and the stator magnet chip of " the anti-hook " of correspondence with it with steelplate punching, then these stator magnet chips are overlapped into magnetic core array 11b; Then, magnetic core array 11b is inserted in the outside of the winding body 11a that has coil C; Then, at the outer circumference surface of winding body 11a and connecting portion coating one deck moulding material epoxy resin of magnetic core array 11b, the sclerosis back forms moulding bodies 11c, and moulding bodies 11c just firmly fixes the connecting portion of magnetic core array 11b and the outer circumference surface of winding body 11a together.
But, there is following shortcoming in above-mentioned existing linear electric motors: as shown in Figure 3, the convergent force that produces when pressure during the coating moulding material and moulding material sclerosis, might cause magnetic core array 11b to be pressed into or to be out of shape to the center position of external stator 11, thereby make the gap smaller between external stator 11 and the internal stator 12, cause stator module 10 and mover assembly 20 to clash, the motion of mover assembly 20 is obstructed, reduce the reliability and the operating efficiency of linear electric motors.
In addition, the magnetic core array 11b that is built up need make inner peripheral surface and the outer circumference surface curved surface bending in accordance with regulations of magnetic core array 11b with independent anchor clamps (not shown), and not only processing technology complexity, and production efficiency is lower, causes production cost to increase.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of above-mentioned existing linear electric motors, and a kind of stator module that can simplify magnetic core array coincidence process, production efficiency height, linear electric motors that production cost is low is provided.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: the stator module of linear electric motors of the present invention comprises: external stator and internal stator; Described external stator comprises: winding body, several magnetic core arrays, two utmost point seats and magnetic core retainer ring; Described winding body is the hollow ring shape, and inside is inlaid with coil; Described magnetic core array is formed by stacking by the stator magnet chip, radially is inserted in respectively on the lateral surface of winding body; Described utmost point seat is inserted in the both sides of winding body inner peripheral surface respectively, and its outer peripheral face contacts with the inner face of each magnetic core array respectively; Described magnetic core retainer ring lock ring is on the outer face of each magnetic core array.
Described magnetic core retainer ring be shaped as the annular that its cross section is a regular polygon.
Described magnetic core retainer ring can also be formed between the outer face of the outer circumference surface of winding body and each magnetic core array by molding process planning.
Described magnetic core array is rectangular shape on the whole, and its outer face and inner face be rectangle plane respectively; The cross section of the outer peripheral face of described utmost point seat is regular polygon, and magnetic core array radially is arranged on the outer peripheral face of utmost point seat; The inner peripheral surface of utmost point seat is the face of cylinder concentric with the inner peripheral surface of winding body.
The shape of described magnetic core retainer ring is identical with the shape of the outer peripheral face of utmost point seat, and the two fixes each magnetic core array.
The invention has the beneficial effects as follows: because the present invention adopts utmost point seat is installed on the inner peripheral surface of winding body, and on the outer circumference surface that each magnetic core array is inserted in winding body the time, the inner face of each magnetic core array is contacted respectively with the outer peripheral face of utmost point seat; And make magnetic core retainer ring lock ring on the outer face of each magnetic core array; Utmost point seat supports winding body, can prevent the distortion of winding body; Utmost point seat is the annular shape of regular polygon for its cross section, is convenient to combine with magnetic core array, thereby has simplified the packaging technology of magnetic core array greatly, has not only reduced production cost, and has improved reliability of products.
Description of drawings
Fig. 1 is the cutaway view of existing linear electric motors;
Fig. 2 is the front view of existing linear electric motors;
Fig. 3 is existing linear electric motors partial enlarged drawings under assembled state;
Fig. 4 is the cutaway view of the embodiment of linear electric motors involved in the present invention;
Fig. 5 is the cutaway view of the external stator in the linear electric motors embodiment involved in the present invention;
Fig. 6 is the decomposition texture schematic diagram of the external stator in the linear electric motors embodiment involved in the present invention;
Fig. 7 is the partial enlarged drawing of the external stator in the linear electric motors embodiment involved in the present invention.
Among the figure:
100: stator module 110: external stator
111: winding body 112: magnetic core array
113: utmost point seat 113a: magnetic core installed surface
114: magnetic core retainer ring 120: internal stator
200: mover assembly
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Fig. 4 is the cutaway view of the embodiment of linear electric motors involved in the present invention; Fig. 5 is the cutaway view of the external stator in the linear electric motors embodiment involved in the present invention; Fig. 6 is the decomposition texture schematic diagram of the external stator in the linear electric motors embodiment involved in the present invention; Fig. 7 is the partial enlarged drawing of the external stator in the linear electric motors embodiment involved in the present invention.
As shown in Figure 4, the stator module 100 of present embodiment linear electric motors comprises: external stator 110 and internal stator 120; External stator 110 is fixed on the framework (not shown); Internal stator 120 is arranged in the external stator 110, leaves the gap between the inner peripheral surface of the outer peripheral face of internal stator 120 and external stator 110.
Described external stator 110 comprises: winding body 111, two magnetic core arrays 112, utmost point seat 113 and magnetic core retainer rings 114; Described winding body 111 is the hollow ring shape, and inside is inlaid with coil C; Described magnetic core array 112 is formed by stacking by the stator magnet chip, radially is inserted in respectively on the lateral surface of winding body 111; Described utmost point seat 113 is inserted in the both sides of winding body 111 inner peripheral surfaces respectively, and its outer peripheral face contacts with the inner face of each magnetic core array 112 respectively; Described magnetic core retainer ring 114 lock rings are on the outer face of each magnetic core array 112.
Described winding body 111 is made the toroidal of hollow by plastic material.
As shown in Figure 5 and Figure 6, the stator magnet chip of forming each magnetic core array 112 is " ∏ " shape, the magnetic core array 112 that forms is rectangular shape on the whole, its outer face and inner face are respectively rectangle plane, and each magnetic core array 112 is radially inlayed on the outer circumference surface that is fixed on winding body 111 respectively; The inner face of each magnetic core array 112 contacts with the magnetic core installed surface 113a of utmost point seat 113 respectively.
Described utmost point seat 113 is made annular by magnetic material by sintering process, is formed with several magnetic core installed surfaces 113a on its outer circumference surface, and the inner face with magnetic core array 112 contacts respectively; Consider mover assembly 120 cylindrical shapes, the inner peripheral surface of utmost point seat 113 is the face of cylinder, and the cross section of the outer peripheral face of described utmost point seat 113 is regular polygon, and magnetic core array 112 radially is arranged on the outer peripheral face of utmost point seat 113; The inner peripheral surface of utmost point seat 113 is faces of cylinder concentric with the inner peripheral surface of winding body 111.
In addition, the inner peripheral surface of described utmost point seat 113 prolongs along the axial direction of winding body 111, thereby makes the width of inner peripheral surface bigger than the width of outer circumference surface.
Described magnetic core retainer ring 114 is made by nonmagnetic substance epoxy resin, and it is shaped as the annular that its cross section is a regular polygon, and lock ring is on the outer face of each magnetic core array 112; Though do not illustrate in the accompanying drawing, magnetic core retainer ring 114 also can form in the following way: insert winding body 111, magnetic core array 112 and utmost point seat 113 respectively in mould after, inject moulding material, make moulding material be molded into the outer face of outer circumference surface He each magnetic core array 112 of winding body 111 equably, thereby form magnetic core retainer ring 114.
Described mover assembly 200 comprises: magnet framework 210 and several magnets 220; Magnet framework 210 is arranged between external stator 110 and the internal stator 120, leaves the gap respectively and between external stator 110 and the internal stator 120; These magnets 220 are corresponding with the position of coil C on the stator module 100 respectively, and equidistant is fixed on the outer circumference surface of magnet framework 210.
The manufacturing process of the stator module of present embodiment linear electric motors is as follows:
In external stator 110, behind the damascene wiring C, utilize molding methods to make winding body 111; Meanwhile, with steel plate in accordance with regulations size be cut into " ∏ ", be built up magnetic core array 112 then; Utilize independent mould to make utmost point seat 113 by sintering process; Utilize independent mold injection molding magnetic core retainer ring 114.
Then, respectively two utmost point seats 113 are inserted the inner peripheral surface of winding body 111 from the left and right sides.
Then, magnetic core array 112 is set radially on the outer circumference surface of winding body 111, the inner face of each magnetic core array 112 is contacted with the outer peripheral face of utmost point seat 113 respectively.
Then, on the outer face of each magnetic core array 112, make each magnetic core array 112 fixing magnetic core retainer ring 114 lock rings, deviate to prevent magnetic core array 112.So far, the stator module assembly working of linear electric motors promptly comes to an end.
After the stator module of present embodiment linear electric motors is assembled as stated above, be combined with ring pole seat 113 on the winding body 111, simultaneously, supporting each magnetic core array 113, make magnetic core array 112 and winding body 111 form one with utmost point seat 113.Thereby replaced fixing with moulding bodies in the stator module of existing linear electric motors the mode of magnetic core array 112, the present invention uses magnetic core retainer ring 114 lock rings of making in advance on fixed magnetic core body 112, the convergent force that produces in the time of can avoiding moulding pressure that moulding bodies produced in the stator module of existing linear electric motors and moulding material sclerosis, not only the phenomenon that winding body 111 is pressed into or is out of shape to the center position to external stator 110 can be prevented, and built-up time can be shortened.
In addition, even adopt molding mode fixed magnetic core body 112, because there is the utmost point seat 113 of becket shape supporting the inner peripheral surface of winding body 111, so can resist the influence of moulding pressure and convergent force; Reduce moving and metaboly of winding body 111 to greatest extent.
In addition, be built up after each magnetic core array 112, each magnetic core array 112 can be assembled on the outer peripheral face of utmost point seat 113, need not curved surface is processed in the inner face and the outer face of magnetic core array 112, both be easy to carry out the size management, can also improve the efficient of making and assembling magnetic core array 112 greatly, reduce production costs.
Claims (5)
1. the stator module of linear electric motors comprises: external stator and internal stator; It is characterized in that: described external stator (100) comprising: winding body (111), several magnetic core arrays (112), two utmost point seats (113) and magnetic core retainer ring (114); Described winding body (111) is the hollow ring shape, and inside is inlaid with coil (C); Described magnetic core array (112) is formed by stacking by the stator magnet chip, radially is inserted in respectively on the lateral surface of winding body (111); Described utmost point seat (113) is inserted in the both sides of winding body (111) inner peripheral surface respectively, and its outer peripheral face contacts with the inner face of each magnetic core array (112) respectively; Described magnetic core retainer ring (114) lock ring is on the outer face of each magnetic core array (112).
2. the stator module of linear electric motors according to claim 1 is characterized in that: described magnetic core retainer ring (114) be shaped as the annular that its cross section is a regular polygon.
3. the stator module of linear electric motors according to claim 1 and 2 is characterized in that: described magnetic core retainer ring (114) is to be formed between the outer face of the outer circumference surface of winding body (111) and each magnetic core array (112) by molding process planning.
4. the stator module of linear electric motors according to claim 1 and 2, it is characterized in that: described magnetic core array (112) is rectangular shape on the whole, and its outer face and inner face be rectangle plane respectively; The cross section of the outer peripheral face of described utmost point seat (113) is regular polygon, and magnetic core array (112) radially is arranged on the outer peripheral face of utmost point seat (113); The inner peripheral surface of utmost point seat (113) is the concentric face of cylinder of inner peripheral surface with winding body (111).
5. the stator module of linear electric motors according to claim 5, it is characterized in that: the shape of described magnetic core retainer ring (114) is identical with the shape of the outer peripheral face of utmost point seat (113), and the two is fixing with each magnetic core array (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101067833A CN100466425C (en) | 2003-10-30 | 2003-10-30 | Linear electric motor stator assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101067833A CN100466425C (en) | 2003-10-30 | 2003-10-30 | Linear electric motor stator assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1612447A true CN1612447A (en) | 2005-05-04 |
| CN100466425C CN100466425C (en) | 2009-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101067833A Expired - Fee Related CN100466425C (en) | 2003-10-30 | 2003-10-30 | Linear electric motor stator assembly |
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| Country | Link |
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| CN (1) | CN100466425C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715784A (en) * | 2012-09-29 | 2014-04-09 | 海尔集团公司 | Motor and linear compressor provided with motor |
| CN107112884A (en) * | 2014-12-26 | 2017-08-29 | Thk株式会社 | Linear actuators |
| CN107534378A (en) * | 2014-10-23 | 2018-01-02 | 磁转换技术股份有限公司 | Brushless slotless d.c. motor/actuator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100320217B1 (en) * | 2000-02-17 | 2002-01-10 | 구자홍 | Structure for preventing vibration of lamination sheet in stator of linear motor |
| KR100374837B1 (en) * | 2001-02-02 | 2003-03-04 | 엘지전자 주식회사 | Stator for linear motor |
| KR100386271B1 (en) * | 2001-02-02 | 2003-06-02 | 엘지전자 주식회사 | Structure for engaging lamination core of linear motor |
| JP3636454B2 (en) * | 2001-05-24 | 2005-04-06 | エルジー エレクトロニクス インコーポレイティド | Reciprocating motor stator |
-
2003
- 2003-10-30 CN CNB2003101067833A patent/CN100466425C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715784A (en) * | 2012-09-29 | 2014-04-09 | 海尔集团公司 | Motor and linear compressor provided with motor |
| CN107534378A (en) * | 2014-10-23 | 2018-01-02 | 磁转换技术股份有限公司 | Brushless slotless d.c. motor/actuator |
| CN107534378B (en) * | 2014-10-23 | 2020-03-06 | 磁转换技术股份有限公司 | Slotless brushless DC motor/actuator |
| CN107112884A (en) * | 2014-12-26 | 2017-08-29 | Thk株式会社 | Linear actuators |
| US10003247B2 (en) | 2014-12-26 | 2018-06-19 | Thk Co., Ltd. | Linear actuator |
| CN107112884B (en) * | 2014-12-26 | 2018-10-02 | Thk株式会社 | Linear actuators |
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| Publication number | Publication date |
|---|---|
| CN100466425C (en) | 2009-03-04 |
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Granted publication date: 20090304 Termination date: 20091130 |