WO2005109605A1 - 分割コア式ステータおよび集中巻線モータ - Google Patents
分割コア式ステータおよび集中巻線モータ Download PDFInfo
- Publication number
- WO2005109605A1 WO2005109605A1 PCT/JP2004/005967 JP2004005967W WO2005109605A1 WO 2005109605 A1 WO2005109605 A1 WO 2005109605A1 JP 2004005967 W JP2004005967 W JP 2004005967W WO 2005109605 A1 WO2005109605 A1 WO 2005109605A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- winding
- printed circuit
- stator
- coil
- motor
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- 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
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
Definitions
- the present invention relates to a split core stator having a stator core formed by connecting a plurality of split cores in an annular shape, and a concentrated winding motor having the split core stator. . More specifically, the present invention relates to a connection structure of each coil wound around each divided core, which is advantageous for reducing the size and increasing the number of poles of a concentrated winding motor. Background art
- FIG. 5 is a front view showing a motor stator having such a configuration for a three-phase motor in a partial cross section.
- a motor stator 100 includes a stator core 103 formed by connecting a plurality of divided cores 102 in an annular shape, and a bobbin 104 made of an insulating resin at a salient pole portion 102a of each divided core 102.
- a coil winding 106 wound around the stator core 103, and an annular coil connection printed circuit board 107 mounted coaxially to one end of the stator core 103 in the direction of the center axis 103a.
- a coil-connection conductive pattern including a coil-connection joint land for connecting the coil winding 106 wound around each split core 102 is formed.
- a star-connected U, V, W three-phase coil winding is formed.
- the motor stator 100 is composed of nine divided cores 102. Therefore, there are also nine coil windings 106 wound around the split core 102. Therefore, the printed circuit board 107 table On the surface, it is necessary to form a plurality of connection patterns for star connection of the nine coil windings 106, and at least a connection land for coil connection to which both ends of each coil winding 106 are connected is provided. But it is necessary to form 18 pieces.
- the number of salient poles is increased to increase the number of coil windings.
- the printed circuit board for connection also has a small diameter, and its surface area is insufficient, making it impossible to form a connection pattern or land having a sufficient copper foil cross-sectional area. Les ,.
- the spacing between the connection patterns and the spacing between the lands cannot be sufficiently secured, and the dielectric strength may be reduced.
- a multilayer substrate In order to secure the area of the connection pattern, a multilayer substrate may be used. However, even when a multi-layer substrate is used, the bonding lands must be formed on the surface of the substrate, and a sufficient area for land formation cannot be secured. Thus, there is only force s to capable of forming the number of land.
- Another object of the present invention is to propose a concentrated winding motor having a powerful split core type stator.
- a plurality of split cores a coil winding wound on a salient pole portion of each split core, a stator core formed by connecting the split cores in an annular shape, and a state where the stator core is sandwiched therebetween.
- a first and a second printed circuit board arranged on both sides of the stator core in the direction of the center axis, and respective coil windings formed separately on the first and the second printed circuit boards, respectively.
- It is characterized by having a joint land formed in a connection pattern.
- first and second printed boards are arranged on both sides of the stator core as printed boards for connecting coil windings wound around each split core. Also, the required number of connection patterns and bonding lands are formed separately on the surfaces of the first and second printed circuit boards. Therefore, even when the outer diameter of the motor is reduced or the number of coil windings is increased, the surface area of the printed circuit board necessary for forming the connection pattern and the joining land can be secured. Therefore, a concentrated winding motor having a small diameter and a large number of coil windings can be manufactured. In addition, it is possible to manufacture a low-voltage, high-current small motor that requires a large cross-sectional area and land area of the connection pattern.
- connection patterns and bonding lands can be divided into the first and second print substrates as follows. That is, the winding start end of each coil wound around each split core is drawn out to the first printed circuit board side, and the winding end end of each coil is drawn out to the second printed circuit board side. Then, the connection pattern and the connection land for connecting the winding start end are formed on the first printed circuit board, and the connection pattern and the connection land are formed on the second printed circuit board for connecting the winding end end. The connection pattern and the joint land are formed.
- annular printed boards attached coaxially to both ends of the stator core in the central axis direction can be used.
- the coils include three-phase coils of U, V, and W, and these coils are formed on the first and second printed circuit boards. Star connection according to the connection pattern.
- the present invention relates to a concentrated winding motor, which is provided with a split core type stator having the above-described configuration.
- the coil winding wound around each split core is provided on both sides in the center axis direction of the stator core having a configuration in which a plurality of split cores are connected in an annular shape.
- First and second printed circuit boards on which connection patterns for connecting lines in a predetermined manner are formed are arranged.
- connection pattern and a connection land for connecting the coil windings are formed.
- Printed circuit board surface area can be secured. Therefore, it is possible to manufacture a concentrated winding motor having a small diameter and a large number of coil windings. In addition, it is possible to manufacture a small motor with a low voltage and a high current that requires a large cross-sectional area and land area of the connection pattern. Furthermore, since the spacing between the connection patterns and the spacing between the joining lands can be ensured, a small motor having high dielectric strength can be manufactured.
- FIG. 1 is a front view showing a concentrated winding motor, in which an upper half portion is shown as a cross section.
- the central winding motor 1 is a three-phase AC motor, and includes a rotor 3 having a rotating shaft 2, a split core type stator 4 arranged so as to surround the rotor 3, and a cylindrical motor case 5. Have. Openings at both ends of the motor case 5 are closed by end plates 7 and 8.
- the end plates 7 and 8 rotatably support the rotating shaft 2 via bearings 71 and 81, respectively.
- the split core type stator 4 includes a stator core 10 having a configuration in which a plurality of split cores 9 are connected in an annular shape, and a circle coaxially mounted on the stator core 10 on both sides of a center axis la of the stator core 10.
- First and second annular printed circuit boards 11 and 12 are provided.
- Each of the divided cores 9 is provided with a coil winding 13, and the coil winding 13 is connected by a connection pattern formed on the surface of the printed circuit boards 11 and 12 so as to be in a predetermined connection state. Have been.
- FIG. 2 (A), 2 (B) and 2 (C) are a left side view, a front view showing a part of the split core type stator in cross section, and a right side view showing the split core type stator of FIG. 1.
- FIG. 3 is a connection diagram of the coil winding.
- 4 (A), 4 (B) and 4 (C) are a left side view showing the split core type stator 4 with the printed circuit boards 11 and 12 removed, a front view showing a part in cross section, and a right side view.
- the stator core 10 of the present embodiment is composed of nine divided cores 9 (9 (1) to 9 (9)), and the salient poles formed on each of the divided cores 9
- the coil windings 13 (13 (1) and 13 (9)) are wound around the portions via bobbins 15 made of an insulating resin, as shown in Fig. 3.
- 13 (3) is a U-phase coil winding 13U
- coil windings 13 (4) -1 13 (6) are a V-phase coil winding 13V
- coil windings 13 (7)-13 (9) are W
- the phase coil winding is 13 W.
- the winding ends EU1, EU2, EU3, EV1, EV2, EV3, EW1, EW2, EW3 are drawn out toward the printed circuit board 11. It is drawn out toward the printed substrate 12.
- SV3, SW1 Conductive first to sixth connection patterns 18 to 23 to which SW3 is connected are formed.
- the first connection pattern 18 includes a first joint land 181 for soldering a lead wire 17U for supplying a U-phase current to the U-phase coil winding 13U and a winding of the coil winding 13 (1).
- a second joint land 182 for soldering the starting end SU1 is formed.
- the third joining land 191 for soldering the winding start end SU2 of the coil winding 13 (2) and the winding start end SU3 of the coil winding 13 (3) are soldered.
- a fourth bonding land 192 for attachment is formed.
- the third connection pattern 20 includes a fifth bonding land 201 for soldering a lead 17V for supplying an alternating current to the V-phase coil winding 13V and a winding start end SV1 of the coil winding 13 (4).
- a sixth bonding land 202 for soldering is formed.
- the fourth connection pattern 21 includes a seventh bonding land 211 for soldering the winding start end SV2 of the coil winding 13 (5) and a winding start end SV2 of the coil winding 13 (6).
- An eighth joint land 212 for soldering No. 3 is formed.
- the fifth connection pattern 22 includes a ninth bonding land 221 for soldering a lead wire 17W for supplying an alternating current to the W-phase coil winding 13W and a winding start of the coil winding 13 (7).
- a tenth joint land 222 for soldering the end SW1 is formed.
- the sixth connection pattern 23 includes the eleventh bonding land 231 for soldering the winding end SW2 of the coil winding 13 (8) and the winding end SW3 of the coil winding 13 (9).
- a twelfth joint land 232 for soldering is formed.
- the second printed circuit board 12 has winding ends EU1—EU3, EV1 of the coil windings 13 (1) -13 (3) as shown in FIG. EV3, EW1 A seventh to tenth connection pattern 2528 to which EW3 is connected is formed.
- the seventh connection pattern 25 includes a thirteenth joint land 251 for soldering the winding end EU1 of the coil winding 13 (1) and a winding end EU2 of the coil winding 13 (2).
- Fourteenth bonding lands 252 for soldering are formed.
- the eighth connection pattern 26 includes the 15th bonding land 261 for soldering the winding end EV1 of the coil winding 13 (4) and the winding end EV2 of the coil winding 13 (5).
- Sixteenth bonding lands 262 for soldering are formed.
- the ninth connection pattern 27 the 17th bonding land 271 for soldering the winding end EW1 of the coil winding 13 (7) and the winding end EW2 of the coil winding 13 (8) are soldered.
- An eighteenth bonding land 272 is formed.
- the 19th bonding land 281 for soldering the winding end EU3 of the coil winding 13 (3) and the winding end EV3 of the coil winding 13 (6) are soldered.
- the wiring patterns are separately arranged on each of the two first and second printed boards 11 and 12 attached to both sides of the stator core 10. . Therefore, the surface area where these can be formed can be doubled as compared with the conventional case where all the connection patterns and the joint lands are formed on a single printed circuit board. Therefore, the area for forming the connection pattern can be ensured without using a multilayer substrate as the print substrate. In addition, a place for forming the joining land can be secured. Furthermore, the connection pattern interval and the connection land Since the gap can be widened, insulation resistance can be improved.
- the split core type stator of the present example it is possible to manufacture a small motor having a small diameter and a large number of coil windings. In addition, it is possible to manufacture a small motor with a low voltage and a high current that requires a large cross-sectional area of a connection pattern and a large joint land area.
- the axial length of the motor stator 4 becomes slightly longer.
- the total length of one coil wound on each divided core can be shortened. Therefore, the axial length of the motor can be made substantially the same as that of a conventional motor having one printed circuit board.
- the cost increase by arranging two printed circuit boards is small compared to the case where the area for forming the connection pattern is secured by using a multilayer board.
- the present invention can be applied to, for example, a brushless motor, a VR type and an HB type stepping motor other than the three-phase AC motor. Of course, it can be applied to motors with less than three phases and more than three phases.
- FIG. 1 is a front view showing a split core type concentrated winding motor to which the present invention is applied.
- 2 (A), 2 (B) and 2 (C) are a left side view, a partial front view, and a right side view showing the split core type stator of FIG. 1.
- FIG. 3 is a connection diagram of coil windings of the concentrated winding motor of FIG. 1.
- FIG. 4 (A), (B) and (C) are left-side views, partly in section, showing the split core type stator of the concentrated winding motor shown in Fig. 1 with the printed board removed. It is the front view and right side view shown by.
- FIG. 5 is a front view showing a conventional split core concentrated winding motor.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2004/005967 WO2005109605A1 (ja) | 2004-05-06 | 2004-05-06 | 分割コア式ステータおよび集中巻線モータ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2004/005967 WO2005109605A1 (ja) | 2004-05-06 | 2004-05-06 | 分割コア式ステータおよび集中巻線モータ |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005109605A1 true WO2005109605A1 (ja) | 2005-11-17 |
Family
ID=35320511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/005967 Ceased WO2005109605A1 (ja) | 2004-05-06 | 2004-05-06 | 分割コア式ステータおよび集中巻線モータ |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2005109605A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208842A (zh) * | 2010-03-31 | 2011-10-05 | 株式会社日立制作所 | 电动机 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002034190A (ja) * | 2000-07-14 | 2002-01-31 | Hitachi Ltd | 回転機 |
| JP2002153005A (ja) * | 2000-11-09 | 2002-05-24 | Tokushu Denso Kk | 回転機 |
| JP2003018789A (ja) * | 2001-06-14 | 2003-01-17 | Shunho Kyo | 内固定子部にスイッチ手段を内蔵するドラム構造 |
-
2004
- 2004-05-06 WO PCT/JP2004/005967 patent/WO2005109605A1/ja not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002034190A (ja) * | 2000-07-14 | 2002-01-31 | Hitachi Ltd | 回転機 |
| JP2002153005A (ja) * | 2000-11-09 | 2002-05-24 | Tokushu Denso Kk | 回転機 |
| JP2003018789A (ja) * | 2001-06-14 | 2003-01-17 | Shunho Kyo | 内固定子部にスイッチ手段を内蔵するドラム構造 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208842A (zh) * | 2010-03-31 | 2011-10-05 | 株式会社日立制作所 | 电动机 |
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