JP2009017746A5 - - Google Patents
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- JP2009017746A5 JP2009017746A5 JP2007179548A JP2007179548A JP2009017746A5 JP 2009017746 A5 JP2009017746 A5 JP 2009017746A5 JP 2007179548 A JP2007179548 A JP 2007179548A JP 2007179548 A JP2007179548 A JP 2007179548A JP 2009017746 A5 JP2009017746 A5 JP 2009017746A5
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- core
- stator
- molding die
- motor
- brushless
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- 238000000465 moulding Methods 0.000 claims description 65
- 239000011347 resin Substances 0.000 claims description 37
- 229920005989 resin Polymers 0.000 claims description 37
- 239000002184 metal Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 238000003825 pressing Methods 0.000 claims description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 13
- 230000000875 corresponding Effects 0.000 claims description 4
- 239000012212 insulator Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims 2
- 238000007723 die pressing method Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000010030 laminating Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 229910052802 copper Inorganic materials 0.000 description 10
- 239000010949 copper Substances 0.000 description 10
- 210000001503 Joints Anatomy 0.000 description 6
- 230000001808 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000001070 adhesive Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Description
本発明は、分割構造の固定子コアを、モータ外被を形成するモールド樹脂にて一体的に
成形した、ファンモータ等の駆動に使用されるブラシレスＤＣモータに関する。
The present invention relates to a brushless DC motor used for driving a fan motor or the like, in which a stator core having a divided structure is integrally formed with a mold resin forming a motor casing.
従来、この種の固定子が分割コア構造であるモータは、ボビン等の電気絶縁処理を施してから、銅線を巻いたそれぞれの分割コアを、あらかじめ一体的に組み合わせて、その接合部を溶接や接着剤を利用して結合した後、成形金型にセットしてモータ外被を構成するモールド樹脂にて一体的に成形されるものが知られている（例えば、特許文献１参照）。 Conventionally, motors with this type of stator having a split core structure are subjected to an electrical insulation process such as bobbins, and then the split cores wound with copper wire are combined together in advance and the joints are welded. In addition, there is known a method in which a resin is bonded by using an adhesive and then integrally formed with a molding resin that is set in a molding die and forms a motor jacket (see, for example, Patent Document 1).
また、分割コアの結合の為に、溶接や接着剤等を利用せず、コア外周部に設けた突起を利用して一体的に組合せるとともに、コア外径より外側に延出させた絶縁樹脂の突起を、成形金型の内径部に当接させてセットし、モータ外被を構成するモールド樹脂にて一体的に成形していた（例えば、特許文献２参照）。 Insulating resin that is combined with the projections provided on the outer periphery of the core and integrated to the outside of the outer diameter of the core, without using welding, adhesives, etc. Were set in contact with the inner diameter portion of the molding die, and were integrally molded with a mold resin constituting the motor jacket (see, for example, Patent Document 2).
以下、分割コアの結合の為に、溶接や接着剤等を利用せず、コア外周部に設けた突起を利用して一体的に組合せたこの種のモータの構成について、図７および図８を参照しながら説明する。 Hereinafter, for the connection of the divided cores, FIG. 7 and FIG. 8 are used for the configuration of this type of motor that is integrally combined using the protrusions provided on the outer peripheral portion of the core without using welding or adhesive. The description will be given with reference.
図に示すように、２分割された固定子コア１０１に絶縁樹脂１０３を介して銅線１０２を巻装した後、絶縁樹脂１０３に設けられた結合用突起１０４にて一体的に結合する。その結合された状態で、成形金型１０６の芯金部１０７に、結合された固定子コア１０１の内径部を当接させるとともに、固定子コア１０１の外径より外側に延出させた絶縁樹脂１０３の突起１０５を成形金型１０６の内径に当接させてしてセットし、モータ外被を構成するモールド樹脂１０８にて一体的に成形していた。 As shown in the drawing, a copper wire 102 is wound around a stator core 101 divided into two through an insulating resin 103, and then integrally coupled by a coupling protrusion 104 provided on the insulating resin 103. In the joined state, the inner diameter portion of the joined stator core 101 is brought into contact with the core metal portion 107 of the molding die 106, and the insulating resin is extended outward from the outer diameter of the stator core 101. The projection 105 of 103 is set in contact with the inner diameter of the molding die 106, and is molded integrally with the mold resin 108 constituting the motor casing.
又、特許文献１に記載されているものは、２分割された固定子コア１０１をあらかじめ溶接にて結合して一体化した後、成形金型１０６の芯金部１０７に固定子コア１０１の内径部を当接させてセットしている。 In addition, what is described in Patent Document 1 is that a stator core 101 divided into two parts is previously joined and integrated by welding, and then the inner diameter of the stator core 101 is connected to a cored bar portion 107 of a molding die 106. The part is set in contact.
このような従来の構成では、あらかじめ分割コアを接合する為に、溶接や接着することが必要であり、手間がかかるとともに、その為の設備も必要になり、高コストになるという課題があった。 In such a conventional configuration, in order to join the split cores in advance, it is necessary to weld or bond them, which is troublesome and requires equipment for that, resulting in high costs. .
また、溶接や接着を必要とせずに結合できるものにおいても、その為に、コアの外径側に突起を設ける必要があり、コアが固定子スロット数と同数に分割されているインナーロータタイプのブラシレスＤＣモータには、適用できないという課題があった。 For those that can be joined without requiring welding or bonding, it is necessary to provide a protrusion on the outer diameter side of the core, and the inner rotor type is divided into the same number of stator slots as the core. The brushless DC motor has a problem that it cannot be applied.
本発明は、このような従来の課題を解決するもので、成形金型内にて分割コアを結合することにより、溶接や接着をせずに一体的に成形可能としたもので、これにより、結合部に磁気的ロスの発生しにくい、高品質のモータを実現するとともに、結合の為の特別な設備を必要としない低価格のモータを実現することを目的としている。 The present invention solves such a conventional problem, and can be formed integrally without welding or bonding by joining the split cores in the molding die. The objective is to realize a high-quality motor that is unlikely to cause magnetic loss in the coupling portion and a low-cost motor that does not require special equipment for coupling.
本発明のブラシレスＤＣモータの固定子鉄芯は、上記目的を達成するために、巻線を施
した複数の分割コアをそれぞれ成形金型内の所定の位置にセットし、成形金型内に組み込まれた押し当てピンにて、それぞれの分割コアを内径方向に押し、成形金型の芯金に押し当てた状態で、モールド樹脂で一体的に成形したものである。
In the stator core of the brushless DC motor of the present invention, in order to achieve the above object, a plurality of divided cores with windings are respectively set at predetermined positions in the molding die and incorporated in the molding die. Each of the split cores is pressed in the inner diameter direction with the pressed pin and pressed integrally with the core metal of the molding die, and is molded integrally with the mold resin.
この手段により、コアの結合の為に、接着や溶接の必要がなく、また絶縁樹脂に金型に当接させるための突起を設ける必要もないので、接着膜による磁気抵抗の増加やあるいは溶接による磁気歪の影響のない高品質のブラシレスDCモータの固定子鉄芯を、低価格で実現することができる。 By this means, it is not necessary to bond or weld the cores for bonding , and it is not necessary to provide a protrusion for contacting the mold with the insulating resin. A high quality brushless DC motor stator core that is free from the effects of magnetostriction can be realized at low cost.
また、他の手段は、複数の分割コアをそれぞれ成形金型内の所定の位置にセットし、成形金型内に組み込まれた押し当てピンにて、それぞれの分割コアを内径方向に押し、成形金型の芯金に押し当てた状態で、モールド樹脂で一体的に成形するとともに、モールド樹脂が金型内で硬化する前に、押し当てピン部にもモールド樹脂が充填されるようにしたものである。 Another means is to set a plurality of split cores at predetermined positions in the molding die, and press each split core in the inner diameter direction with a pressing pin incorporated in the molding die. Molded integrally with the mold resin while pressed against the core of the mold, and before the mold resin is cured in the mold, the mold pin is also filled with the mold resin It is.
この手段により、押し当てピン部にも樹脂が充填されるので、固定子コア表面が外部に露出することのない、防水性能の高い高品質のブラシレスＤＣモータの固定子鉄芯が得られる。 By this means, the pressing pin portion is also filled with resin, so that a high-quality stator iron core of a brushless DC motor with high waterproof performance can be obtained without exposing the stator core surface to the outside.
また、他の手段は、それぞれの分割コアの内径部に凹部を設けるとともに、成形金型の芯金外径部にその凹部に係合する凸部を設け、それぞれの分割コアを成形金型内にセットするときに、分割コアの凹部を芯金外径部の凸部に系合させるようにしたものである。 Another means is to provide a concave portion in the inner diameter portion of each divided core, and provide a convex portion that engages with the concave portion in the outer diameter portion of the core metal of the molding die. In this case, the concave part of the split core is aligned with the convex part of the outer diameter part of the cored bar.
この手段により、分割コアの成形金型内へのセットが容易になり、生産性の向上が図れる。 By this means, the division core can be easily set in the molding die, and productivity can be improved.
また、他の手段は、固定子分割コアを結合させたときに、隣り合ったコアとの間に生じるスロット開口部に対応する成形金型の芯金の外径部に、複数の固定子分割コアと同数の突起を設け、この突起を利用して固定子分割コアを成形金型内にセットするようにしたものである。 Another means is that when the stator split cores are joined, a plurality of stator splits are formed on the outer diameter portion of the core metal of the molding die corresponding to the slot opening formed between the adjacent cores. The same number of protrusions as the core are provided, and the stator split core is set in the molding die using the protrusions.
この手段により、分割コアの成形金型内へのセットが容易になり、生産性の向上が図れる。 By this means, the division core can be easily set in the molding die, and productivity can be improved.
また、他の手段は本固定子鉄芯を備えたブラシレスＤＣモータを換気送風装置に搭載したものである。 Another means is that a brushless DC motor provided with this stator iron core is mounted on a ventilation blower.
この手段により、低価格の換気送風装置の実現が可能になる。 By this means, it is possible to realize a low-cost ventilation blower.
また、他の手段は本固定子鉄芯を備えたブラシレスＤＣモータを基地局冷却機用熱交換ファンモータ装置に搭載したものである。 Another means is that a brushless DC motor provided with this stator iron core is mounted on a heat exchange fan motor device for a base station cooler.
この手段により、低圧駆動に対応した太い銅線径の巻線が可能な固定子鉄芯を備えた安価なブラシレスＤＣモータを搭載できるので、低価格の基地局冷却機用熱交換ファンモータ装置の実現が可能になる。 By this means, an inexpensive brushless DC motor equipped with a stator iron core capable of winding with a large copper wire diameter corresponding to low-voltage drive can be mounted. Therefore, a low-cost heat exchange fan motor device for a base station cooler Realization is possible.
本発明によれば、分割コアを結合する為に特別な作業をする必要がなく、また特別な設備や装置の必要もないので、低コストのブラシレスＤＣモータの固定子を提供することが可能になる。 According to the present invention, it is not necessary to perform a special work for joining the split cores, and there is no need for special equipment or devices, so that it is possible to provide a low-cost brushless DC motor stator. Become.
また、分割コアの結合部に溶接による熱ストレスが加わることがないので、コアに歪が発生せず、磁気損失の少ない、高性能のブラシレスＤＣモータの固定子を提供することが可能になる。 Further, since thermal stress due to welding is not applied to the joint portion of the split core, it is possible to provide a high-performance brushless DC motor stator that does not cause distortion in the core and has a small magnetic loss.
本発明の請求項１記載の発明は、積層鉄板にて構成され、絶縁物を介して巻線を施した複数の固定子分割コアを、モールド樹脂の成形金型に挿入した後、前記複数の固定子分割コアの各コアの外径部を、前記成形金型の押し当てピンにて押し、前記複数の固定子分割コアの内径側が接する前記成形金型の芯金に押し当てた状態で成形するので、分割コア結合の為に溶接をすることがないので、結合部に熱ストレスによる機械的歪が発生せず、結合による磁気特性の劣化が無い。また結合の為の特別な装置を使用することなく、ブラシレスDCモータの固定子鉄芯を製造することが可能になる。さらに、前記成形金型内にコアをセットする前に、あらかじめコアを仮組みしておく必要が無く、生産性が向上するとともに、成形時の樹脂の流動圧等によって、コア位置がずれることがなく、高精度の固定子の製造が可能になる。 The invention according to claim 1 of the present invention comprises a plurality of stator split cores that are formed of laminated iron plates and are wound with an insulator interposed therebetween, and then inserted into the molding resin mold. Molded in a state in which the outer diameter portion of each core of the stator split core is pressed by the pressing pin of the molding die and pressed against the core metal of the molding die in contact with the inner diameter side of the plurality of stator split cores Therefore, since welding is not performed for the split core connection, mechanical distortion due to thermal stress does not occur in the connection portion, and there is no deterioration in magnetic characteristics due to the connection. In addition, it is possible to manufacture a stator core of a brushless DC motor without using a special device for coupling. Furthermore, before setting the core in the molding die, it is not necessary to temporarily assemble the core in advance, the productivity is improved, and the core position may be shifted due to the flow pressure of the resin at the time of molding. In addition, a highly accurate stator can be manufactured.
また、押し当てピンを、モールド樹脂が成形金型内で硬化する前に、前記成形金型内に収納し、前記押し当てピン部にも前記モールド樹脂が充填されるようにしたので、前記固定子コアの表面が露出することがなく、耐湿性能や防水性能にすぐれた、高品質の固定子の製造が可能になる。 Furthermore, the push and against the pin, prior to the molding resin is cured in the molding die, and housed in the molding die, since the molding resin to the pressing pin has to be filled, the The surface of the stator core is not exposed, and it is possible to manufacture a high-quality stator having excellent moisture resistance and waterproof performance.
また、複数の固定子分割コアの各コアすべての内径部に凹部を設けるとともに、その凹部と係合する凸部を成形金型の芯金外径部に設け、この係合を利用して前記複数の固定子分割コアを前記成形金型内にセットするので、あらかじめコアを仮組みしておかなくても、成形金型内へのセットが容易になり、生産性が向上する。 Further, it provided with a recess in the core all the inner diameter portion of the multiple stator split cores, provided a convex portion to be engaged with the recess in the core metal outer diameter portion of the molding die, by utilizing this engagement Since the plurality of stator split cores are set in the molding die, setting in the molding die is facilitated and productivity is improved even if the cores are not temporarily assembled.
以下、本発明の実施の形態について図面を参照しながら説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
（参考例１）
図１は、本発明の参考例のブラシレスＤＣモータの固定子分割コア単体に銅線を巻装した概略説明図、図２は各分割コアを組み合わせ、金属リングで保持した状態の正面図、図３は同平面図である。
(Reference Example 1)
FIG. 1 is a schematic explanatory view in which a copper wire is wound around a stator split core of a brushless DC motor according to a reference example of the present invention. FIG. 2 is a front view of a state in which the split cores are combined and held by a metal ring. 3 is a plan view of the same.
図１において、１は固定子分割コアの単体を示したものであり、絶縁ボビン２を装着した後に、銅線３を巻装している。また、分割コアの両端には、隣りあったコアとの係合用に、凹部４と凸部５が設けられている。固定子分割コア１はそれぞれの係合用の凸部５、及び凹部４を隣合ったコアの凹部４および凸部５を合わせながら、一体の固定子コア組６に組み上げられる。この状態であらかじめ加熱して膨張させた図２および図３に示す金属リング７を、固定子コア組６の外径部に当接するようにはめた後、空冷し、収縮させるこ
とにより、固定子コア組６を強固に保持することが可能になる。この状態で、各固定子分割コア１の銅線を、プリント基板８を利用して結線した後、成形金型にセットし、モールド樹脂にて成形することにより、固定子コア組６が一体化するとともに、モールド樹脂外被が同時に形成される。
In FIG. 1, reference numeral 1 denotes a single stator split core, and a copper wire 3 is wound after the insulating bobbin 2 is attached. Moreover, the recessed part 4 and the convex part 5 are provided in the both ends of the split core for engagement with the adjacent core. The stator split core 1 is assembled into an integral stator core set 6 while aligning the concave portions 4 and convex portions 5 of adjacent cores with the convex portions 5 and concave portions 4 for engagement. The metal ring 7 shown in FIG. 2 and FIG. 3 that has been heated and expanded in this state in advance is fitted in contact with the outer diameter portion of the stator core set 6, and then air-cooled and contracted, thereby the stator. It becomes possible to hold the core set 6 firmly. In this state, after connecting the copper wire of each stator split core 1 using the printed circuit board 8, the stator core set 6 is integrated by setting it in a molding die and molding it with a molding resin. At the same time, a mold resin jacket is formed at the same time.
これにより、固定子コア組６の各固定子分割コア１どおしの各接合部を溶接や接着などをすることなく、各固定子分割コア１の結合が可能になり、低価格のブラシレスＤＣモータの分割コアの固定子が得られる。また、各固定子分割コア１の接合部に、溶接による熱が加わらないので、接合部に機械的な歪による磁気損失が発生せず、効率低下の少ない、高品質のブラシレスＤＣモータの分割コアの固定子が得られる。 As a result, the stator split cores 1 can be coupled without welding or bonding the respective joints of the stator split cores 1 of the stator core set 6, and a low-cost brushless DC The stator of the split core of the motor is obtained. In addition, since heat due to welding is not applied to the joints of the stator split cores 1, there is no magnetic loss due to mechanical distortion at the joints, and the split cores of a high-quality brushless DC motor with little reduction in efficiency. Can be obtained.
尚、本参考例では、金属リング７にて固定子コア組６を保持したが、特に金属製のリングとする必要はなく、ゴムやエラストマー等の樹脂でもよく、要は組み合わせた固定子コア組６を外径側から締め付けて保持する強度があればよい。 In this reference example , the stator core set 6 is held by the metal ring 7, but it is not necessary to use a metal ring in particular, and a resin such as rubber or elastomer may be used. It is sufficient if the strength is sufficient to tighten and hold 6 from the outer diameter side.
（実施の形態１）
図４は、本発明の第１の実施の形態におけるブラシレスＤＣモータの固定子分割コア単体に銅線を巻装した概略説明図、図５は各分割コアを成形金型内にセットした状態の説明図、図６は同一部の拡大説明図である。
(Embodiment 1 )
FIG. 4 is a schematic explanatory diagram in which a copper wire is wound around the stator split core of the brushless DC motor according to the first embodiment of the present invention, and FIG. 5 is a state in which each split core is set in a molding die. FIG. 6 and FIG. 6 are enlarged explanatory views of the same part.
図４、図５および図６において、９は固定子分割コアの単体を示したものであり、絶縁ボビン２を装着した後に、銅線３を巻装している。固定子分割コア９の両端は、参考例１における固定子分割コア１とは違い、隣りあったコアとの係合用の凹凸部は無く、平面状の端部で形成されている。また、固定子分割コア９の内径部には、成形金型１３の芯金１１の外形部に設けられた位置きめ用の突起１４に係合する位置に、位置きめ用の切欠き１０が設けられている。成形金型１３には、固定子分割コア９と同数の押し当てピン１２が組み込まれており、押し当てピン１２は成形金型１３内に固定子分割コア９をセットするときは、金型内に収納されており、固定子分割コア９のすべてのセットが終了し、成形金型１３が閉じられると同時に金型から飛び出し、固定子分割コア９の外径に押し当てられて、固定子分割コア９を成形金型１３の芯金１１に押し付ける。又、押し当てピン１２はモールド樹脂が成形金型１３内に充填され、熱硬化が始まる前に、再び成形金型１３の内部に収納される。 4, 5, and 6, reference numeral 9 denotes a single stator split core, and the copper wire 3 is wound after the insulating bobbin 2 is attached. Unlike the stator split core 1 in Reference Example 1 , both ends of the stator split core 9 are formed with planar end portions without an uneven portion for engagement with an adjacent core. Further, a notch 10 for positioning is provided on the inner diameter portion of the stator split core 9 at a position that engages with a positioning protrusion 14 provided on the outer shape of the core 11 of the molding die 13. It has been. The molding die 13 includes the same number of pressing pins 12 as the stator split core 9. When the stator split core 9 is set in the molding die 13, the pressing pin 12 is not included in the mold. All the sets of the stator split core 9 are finished, the molding die 13 is closed, and at the same time, the stator split core 9 pops out of the die and is pressed against the outer diameter of the stator split core 9 to split the stator. The core 9 is pressed against the core metal 11 of the molding die 13. Further, the pressing pin 12 is filled in the molding die 13 with mold resin and is stored in the molding die 13 again before thermosetting is started.
このような構成において、まず固定子分割コア９それぞれ単体を、その内径の切欠き１０を、成形金型１３の芯金１１の外径部に設けられた突起１４に係合するようにセットする。この状態のときには、押し当てピン１２は成形金型１３の内部に収納されている。次に、全部の固定子分割コア９のセットが終了し、成形金型の上型と下型が閉じる工程に移るときに、押し当てピン１２は成形金型１３内に組み込まれたスライド機構などを利用して、図６の矢印で示すように、成形金型１３から芯金１１の方向に飛び出し、固定子分割コア９の外径部に押し当てられ停止する。このとき、固定子分割コア９は押し当てピン１２によって芯金１１の方向に押されることによって、その両端の平面部が隣り合ったコアの同じく端部の平面部と強固に接合されることになる。そして、この状態で完全に成形金型が閉じられてから、モールド樹脂が金型内に充填される。押し当てピン１２は、モールド樹脂が成形金型１３内にほぼ完全に充填される直前に、再び成形金型１３の内部に収納され、収納されると同時にこの部分にもモールド樹脂が充填される。押し当てピン１２が収納されるとき、その他の部分には十分樹脂が充填されているので、固定子分割コア９は移動することなく、隣り合ったコアとの接合も強固な状態で保持されている。最後に成形金型１３内でモールド樹脂が熱硬化し、モータ外被が形成される。 In such a configuration, the stator divided cores 9 are first set so that the notches 10 of the inner diameter engage with the projections 14 provided on the outer diameter portion of the core metal 11 of the molding die 13. . In this state, the pressing pin 12 is housed inside the molding die 13. Next, when the setting of all the stator split cores 9 is completed and the process proceeds to the step of closing the upper mold and the lower mold of the molding die, the pressing pin 12 is incorporated into the molding die 13 or the like. As shown by the arrow in FIG. 6, it protrudes from the molding die 13 toward the core 11 and is pressed against the outer diameter portion of the stator split core 9 to stop. At this time, the stator split core 9 is pushed in the direction of the core metal 11 by the pressing pin 12 so that the flat portions at both ends thereof are firmly joined to the flat portions at the same end of the adjacent core. Become. In this state, the mold is completely closed, and then the mold resin is filled into the mold. Immediately before the molding resin is almost completely filled in the molding die 13, the pressing pin 12 is again accommodated in the molding die 13 and at the same time, this portion is filled with the molding resin. . When the pressing pin 12 is stored, the other portions are sufficiently filled with resin, so that the stator split core 9 does not move and the joint with the adjacent core is held in a strong state. Yes. Finally, the mold resin is thermally cured in the molding die 13 to form a motor jacket.
これにより、各固定子分割コア１どうしの各接合部を溶接や接着などをすることなく、
各固定子分割コア１の結合が可能になり、低価格のブラシレスDCモータの分割コアの固定子が得られる。また、各固定子分割コア１の接合部に、溶接による熱が加わらないので、接合部に機械的な歪による磁気損失が発生せず、効率低下の少ない、高品質のブラシレスDCモータの分割コアの固定子が得られる。また、固定子分割コア９をあらかじめ組み上げることなく、成形金型１３にセットすることが可能になり、固定子分割コア９の金型内へのセット作業が容易になり、生産性が向上する。又、押し当てピン１２の部分にも樹脂が充填されるので、固定子分割コア９の外径部分が表面に露出することがなく、耐湿および防水性能の高い、高品質のブラシレスＤＣモータの分割コアの固定子が得られる。
Thereby, without welding or bonding each joint part between the stator split cores 1,
Each stator split core 1 can be connected, and a low-cost split core stator of a brushless DC motor can be obtained. In addition, since no heat is applied to the joints of each stator split core 1 due to welding, magnetic losses due to mechanical distortion do not occur in the joints, and there is little reduction in efficiency. Can be obtained. In addition, the stator split core 9 can be set in the molding die 13 without being assembled in advance, and the setting work of the stator split core 9 into the die is facilitated, and the productivity is improved. Also, since the pressing pin 12 is filled with resin, the outer diameter portion of the stator split core 9 is not exposed on the surface, and the high-quality brushless DC motor is divided with high moisture resistance and waterproof performance. A core stator is obtained.
尚、本実施の形態においてはコアセットのために、固定子分割コア９の内径に切欠き１０を設け、芯金１１の外径の、その切欠き１０に対応する位置に突起１４を設けたが、突起１４はその位置に設ける以外にも、例えば、固定子分割コア９を組み上げたときに、隣り合ったコアとの間に生じるスロット開口部の位置に設けてもよく、コアのセットの位置決め効果に差異を生じない。又、本実施の形態においては押し当てピン１２をモールド樹脂が金型内に充填し、完全に熱硬化する前に成形金型１３内に収納して、押し当てピン１２部にも樹脂を充填させ、固定子分割コア９の外径部分が表面に露出することがないようにしているが、室内だけで使用される場合など、耐湿や防水性能が要求されないものは、完全にモールド樹脂が熱硬化してから押し当てピン１２を金型内に収納してもよく、その場合も固定子分割コア９の金型内へのセット作業の容易性に変化は無い。 In this embodiment, for core setting, a notch 10 is provided on the inner diameter of the stator split core 9, and a protrusion 14 is provided on the outer diameter of the core metal 11 at a position corresponding to the notch 10. However, in addition to providing the protrusion 14 at that position, for example, when the stator split core 9 is assembled, it may be provided at the position of the slot opening formed between adjacent cores. No difference in positioning effect. Further, in this embodiment, the pressing pin 12 is filled with mold resin in the mold, and is stored in the molding die 13 before being completely thermoset, and the pressing pin 12 is also filled with resin. However, the outer diameter portion of the stator split core 9 is not exposed on the surface. However, when the product is used only indoors and does not require moisture resistance or waterproof performance, the mold resin is completely heated. After the curing, the pressing pin 12 may be housed in the mold, and in that case, there is no change in the ease of setting the stator split core 9 in the mold.
また、本実施の形態によるブラシレスＤＣモータは、分割コアで太い銅線を巻くことができ、樹脂モールド外被によって耐湿、防水性能が高いので、低圧駆動で、屋外設置される基地局冷却機用熱交換装置などの電気機器に適している。 Also, the brushless DC motor according to the present embodiment can wind a thick copper wire with a split core, and has high moisture resistance and waterproof performance due to the resin mold outer cover. Suitable for electrical equipment such as heat exchangers.
以上のように、本発明によるブラシレスＤＣモータの固定子鉄芯は、分割コアをモールド樹脂成形時に同時に結合できるので、溶接や接着などの結合の為の特別な手段を必要とせず、低価格であるとともに、結合部に磁気的な損失の発生せず、高性能であり、熱交換型冷却機用のファンモータ駆動装置に搭載するブラシレスＤＣモータの固定子鉄芯として最適である。 As described above, the stator iron core of the brushless DC motor according to the present invention can combine the split cores at the same time as the molding resin molding, so that no special means for bonding such as welding or adhesion is required, and the price is low. In addition, there is no magnetic loss in the coupling portion, and it has high performance and is optimal as a stator iron core for a brushless DC motor mounted on a fan motor driving device for a heat exchange type cooler.
１ 固定子分割コア
２ 絶縁ボビン
３ 銅線
４ 凹部
５ 凸部
６ 固定子コア組
７ 金属リング
８ プリント基板
９ 固定子分割コア
１０ 切欠き
１２ 押し当てピン
１３ 成形金型
１４ 突起
DESCRIPTION OF SYMBOLS 1 Stator division | segmentation core 2 Insulation bobbin 3 Copper wire 4 Concave part 5 Convex part 6 Stator core group 7 Metal ring 8 Printed circuit board 9 Stator division | segmentation core 10 Notch 12 Pushing pin 13 Molding die 14 Protrusion
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| WO2010109515A1 (en) | 2009-03-23 | 2010-09-30 | 株式会社ハーモニック・ドライブ・システムズ | Segmented core motor stator |
| JP2013110921A (en) | 2011-11-24 | 2013-06-06 | Aisan Ind Co Ltd | Motor and electric pump |
| JP6510195B2 (en) * | 2013-11-08 | 2019-05-08 | 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． | Motor and method of manufacturing the same |
| JP6430266B2 (en) | 2015-01-20 | 2018-11-28 | 愛三工業株式会社 | Stator and electric pump |
| JP7048257B2 (en) * | 2017-10-27 | 2022-04-05 | トヨタ自動車株式会社 | Resolver stator |
| WO2021210173A1 (en) * | 2020-04-17 | 2021-10-21 | 三菱電機株式会社 | Stator manufacturing device and stator manufacturing method |
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