JP2017099157A - Laminate of magnetic plate and motor - Google Patents

Laminate of magnetic plate and motor Download PDF

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JP2017099157A
JP2017099157A JP2015229651A JP2015229651A JP2017099157A JP 2017099157 A JP2017099157 A JP 2017099157A JP 2015229651 A JP2015229651 A JP 2015229651A JP 2015229651 A JP2015229651 A JP 2015229651A JP 2017099157 A JP2017099157 A JP 2017099157A
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laminate
motor
ribbon
magnetic
amorphous
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JP2017099157A5 (en
JP6655787B2 (en
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西川　幸男
Yukio Nishikawa
幸男 西川
南尾　匡紀
Masanori Nano
匡紀 南尾
小島　徹
Toru Kojima
徹 小島
宝　晃
Akira Takara
晃 宝
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Panasonic Intellectual Property Management Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To facilitate handling against an external load stress while preventing degradation of motor characteristics.SOLUTION: In a laminate 10 including laminated metal strips 3 each having nanocrystal grains excellent in soft magnetic properties, soft magnetic amorphous thin ribbons 1 having high hardness and excellent bendability are arranged in an uppermost layer and a lowermost layer, whereby the metal strips 3 are protected while preventing deterioration of the magnetic characteristics of a motor. In addition, even when cracks occur inside the laminate 10, the outer shape of the laminate 10 is maintained, so that handling becomes easy.SELECTED DRAWING: Figure 2

Description

本発明は、モータ用鉄心として用いられる磁性板の積層体及びモータに関する。   The present invention relates to a laminated body of magnetic plates and a motor used as an iron core for a motor.

従来、モータ用鉄心には、純鉄や電磁鋼板が用いられている。また、より効率化を目的としたモータには、非晶質やナノ結晶粒を有する薄帯が鉄心に用いられたものがある（例えば、特許文献１参照）。   Conventionally, pure iron or electromagnetic steel sheets have been used for motor iron cores. In addition, there is a motor in which a thin ribbon having amorphous or nanocrystal grains is used for an iron core as a motor aiming at higher efficiency (for example, see Patent Document 1).

特許文献１の技術では、まず、単ロール法、双ロール法等の液体急冷法により作製された非晶質薄帯に対して巻回、切断、打ち抜き、エッチング等を行うことでモータ用鉄心を作製する。次に、そのモータ用鉄心を熱処理して微細なナノ結晶粒を有する金属薄帯とし、これらを積層することで、図６に示す固定子鉄心及び回転子鉄心を作製する。   In the technique of Patent Document 1, first, an iron core for a motor is formed by performing winding, cutting, punching, etching, etc. on an amorphous ribbon manufactured by a liquid quenching method such as a single roll method or a twin roll method. Make it. Next, the stator core and the rotor core shown in FIG. 6 are manufactured by heat-treating the motor core to form a metal ribbon having fine nanocrystal grains and laminating them.

特開平６−１４５９１７号公報Japanese Patent Laid-Open No. 6-145917

しかしながら、特許文献１の技術では、非晶質薄帯を熱処理して作製されたナノ結晶粒を有する金属薄帯は脆いため、積層後に外力（外部負荷応力）が加わった場合に破損しやすく、モータ特性（モータの磁気特性）の低下につながりやすいという課題を有している。   However, in the technique of Patent Document 1, since the metal ribbon having nanocrystal grains produced by heat treatment of the amorphous ribbon is brittle, it is easily damaged when an external force (external load stress) is applied after lamination, There is a problem that the motor characteristics (magnetic characteristics of the motor) are likely to deteriorate.

本発明の目的は、上述した課題を解決するものであり、モータ特性の低下を防ぎつつ、外部負荷応力に対して取扱いが容易となる磁性板の積層体及びモータを提供することである。   An object of the present invention is to solve the above-described problems, and to provide a laminated body of a magnetic plate and a motor that can be easily handled with respect to external load stress while preventing deterioration of motor characteristics.

本発明の一態様に係る磁性板の積層体は、軟磁性の非晶質薄帯と、結晶粒を有する軟磁性の金属薄帯とが積層され、少なくとも最上層と最下層が非晶質薄帯である構成を採る。   A laminate of a magnetic plate according to one embodiment of the present invention includes a soft magnetic amorphous ribbon and a soft magnetic metal ribbon having crystal grains, and at least an uppermost layer and a lowermost layer are amorphous thin. The structure which is a belt is taken.

本発明の一態様に係るモータは、上記磁性板の積層体を有する構成を採る。   The motor according to one embodiment of the present invention employs a configuration having a laminate of the magnetic plates.

本発明によれば、モータ特性の低下を防ぎつつ、外部負荷応力に対して取扱いが容易になる。   According to the present invention, it is easy to handle external load stress while preventing deterioration of motor characteristics.

本発明の実施の形態１に係る磁性板の積層体の構成図Configuration diagram of a laminate of magnetic plates according to Embodiment 1 of the present invention 本発明の実施の形態１に係る磁性板の積層体を用いたモータの構成図Configuration diagram of a motor using a laminated body of magnetic plates according to Embodiment 1 of the present invention 本発明の実施の形態１に係る金属薄帯の積層断面図Laminated cross-sectional view of a metal ribbon according to Embodiment 1 of the present invention 本発明の実施の形態２に係る磁性板の積層体の断面構成図Sectional block diagram of a laminate of magnetic plates according to Embodiment 2 of the present invention 本発明の実施の形態３に係る磁性板の積層体の断面構成図Cross-sectional configuration diagram of a laminate of magnetic plates according to Embodiment 3 of the present invention 特許文献１のモータを示す構成図Configuration diagram showing the motor of Patent Document 1

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.

（実施の形態１）
本発明の実施の形態１について説明する。 (Embodiment 1)
Embodiment 1 of the present invention will be described.

まず、図１を用いて、本発明の実施の形態１に係る磁性板の積層体（以下、単に「積層体」という）１０について説明する。図１は、本実施の形態の積層体１０の構成図である。図１（ａ）は、積層体１０の上面図である。図１（ｂ）は、図１（ａ）に示したＡ−Ｂ間の断面図である。図１に示す積層体１０は、モータ１００（図２参照）の磁心として用いられる。   First, a laminated body (hereinafter simply referred to as “laminated body”) 10 of magnetic plates according to Embodiment 1 of the present invention will be described with reference to FIG. FIG. 1 is a configuration diagram of a laminate 10 according to the present embodiment. FIG. 1A is a top view of the laminate 10. FIG.1 (b) is sectional drawing between AB shown to Fig.1 (a). A laminate 10 shown in FIG. 1 is used as a magnetic core of a motor 100 (see FIG. 2).

図１（ａ）、図１（ｂ）に示すように、積層体１０は、非晶質薄帯の固定子材（以下、単に「非晶質薄帯」ともいう）１、固定用穴２、軟磁性金属薄帯の固定子材（以下、単に「金属薄帯」ともいう）３、金属薄帯３を積層した積層部４を有する。   As shown in FIGS. 1 (a) and 1 (b), the laminated body 10 includes an amorphous ribbon stator material (hereinafter also simply referred to as “amorphous ribbon”) 1, a fixing hole 2 and the like. A soft magnetic metal ribbon stator material (hereinafter also simply referred to as “metal ribbon”) 3, and a laminated portion 4 in which the metal ribbon 3 is laminated.

図１（ｂ）に示すように、積層部４の上下には、それぞれ、軟磁性の非晶質薄帯１が配置されている。すなわち、積層体１０の最上層と最下層には、非晶質薄帯１が配置される。非晶質薄帯１の組成としては、例えば、鉄−珪素−ホウ素系を主体とする合金にニオブ、銅、燐などが添加されたものがあるが、知られている合金の種類は極限られている。   As shown in FIG. 1B, soft magnetic amorphous ribbons 1 are arranged above and below the laminated portion 4, respectively. That is, the amorphous ribbon 1 is disposed on the uppermost layer and the lowermost layer of the laminate 10. As the composition of the amorphous ribbon 1, for example, an alloy mainly composed of an iron-silicon-boron system is added with niobium, copper, phosphorus, etc., but the types of known alloys are limited. ing.

また、積層部４の上下方向（金属薄帯３の積層方向または厚さ方向ともいう）には、固定用穴２が形成されている。固定用穴２には、後述するボルト５、カラー１２（図２参照）が挿入される。   A fixing hole 2 is formed in the vertical direction of the laminated portion 4 (also referred to as the lamination direction or thickness direction of the metal ribbon 3). A bolt 5 and a collar 12 (see FIG. 2) described later are inserted into the fixing hole 2.

積層部４の面内方向の形状は、製品に応じて異なる。本実施の形態において、積層体１０は、例えば、冷蔵庫やエアコンに使用されるハーメチックモータに使用されるものとし、最大外径が８０ｍｍ、高さが３０ｍｍとする。   The shape of the laminated portion 4 in the in-plane direction varies depending on the product. In this Embodiment, the laminated body 10 shall be used for the hermetic motor used for a refrigerator or an air conditioner, for example, and the maximum outer diameter shall be 80 mm and height shall be 30 mm.

金属薄帯３は、非晶質薄帯１を熱処理して結晶粒を生成することで得られる。熱処理された金属薄帯３の軟磁気特性は、非晶質薄帯１よりも向上する。したがって、磁気特性を高めるために、積層する薄帯の組合せの比率は、非晶質薄帯１を最小限にする方が望ましい。   The metal ribbon 3 is obtained by heat-treating the amorphous ribbon 1 to generate crystal grains. The soft magnetic properties of the heat-treated metal ribbon 3 are improved as compared with the amorphous ribbon 1. Therefore, in order to improve the magnetic characteristics, it is desirable that the ratio of the combination of the thin ribbons to be laminated is minimized for the amorphous ribbon 1.

次に、図２を用いて、本発明の実施の形態１に係るモータ１００について説明する。図２は、本実施の形態のモータ１００の構成図である。図２（ａ）は、モータ１００の上面図である。図２（ｂ）は、図２（ａ）に示したＡ−Ｂ間の断面図である。   Next, the motor 100 according to the first embodiment of the present invention will be described with reference to FIG. FIG. 2 is a configuration diagram of the motor 100 according to the present embodiment. FIG. 2A is a top view of the motor 100. FIG. 2B is a cross-sectional view taken along the line A-B shown in FIG.

図２（ａ）、図２（ｂ）に示すように、モータ１００は、図１に示した積層体１０の他に、ボルト５、ワッシャ６、金属基板７、回転子８、巻線９、スペーサ１１、カラー１２を有する。   As shown in FIGS. 2A and 2B, the motor 100 includes, in addition to the laminate 10 shown in FIG. 1, a bolt 5, a washer 6, a metal substrate 7, a rotor 8, a winding 9, A spacer 11 and a collar 12 are provided.

図２（ｂ）に示すように、積層体１０は、金属基板７の上のスペーサ１１の上に配置される。   As illustrated in FIG. 2B, the stacked body 10 is disposed on the spacer 11 on the metal substrate 7.

また、図２（ｂ）に示すように、固定用穴２にはカラー１２が挿入され、そのカラー１２にはボルト５が挿入される。そして、図２（ｂ）に示すように、ボルト５は、ワッシャ６とともに金属基板７に締結される。カラー１２を用いることにより、ボルト５を締結する際の高さが一定となる。   Further, as shown in FIG. 2B, the collar 12 is inserted into the fixing hole 2, and the bolt 5 is inserted into the collar 12. Then, as shown in FIG. 2B, the bolt 5 is fastened to the metal substrate 7 together with the washer 6. By using the collar 12, the height when the bolt 5 is fastened is constant.

また、図２（ａ）、図２（ｂ）に示すように、巻線９は上下の非晶質薄帯１のそれぞれに施される。また、モータ１００の中央部分には、回転子８が設置される。   Further, as shown in FIGS. 2A and 2B, the winding 9 is applied to each of the upper and lower amorphous ribbons 1. A rotor 8 is installed at the center of the motor 100.

図１、図２において、例えば、積層体１０の厚さが２６ｍｍである場合、厚さが０．０３ｍｍである非晶質薄帯１および金属薄帯３を合計７５０枚積層できる。この場合、占積率は８７％となる。非晶質薄帯１は１８０度に曲げることができるほど、外力（外部負荷応力）に強い。その一方、金属薄帯３は、軟磁気特性が向上したり飽和磁束密度が大きくなったりするが、外力に対しては弱い。そこで、本実施の形態では、外装部である積層体１０の上下の表面層（最上層と最下層）を、外力に強い非晶質薄帯１で構成するようにした。これにより、上下の表面層である非晶質薄帯１に外力が加わっても金属薄帯３には力が直接加わらないため、割れ等が発生して積層体１０が崩れることを防ぐことができる。   1 and 2, for example, when the thickness of the laminate 10 is 26 mm, a total of 750 amorphous ribbons 1 and metal ribbons 3 having a thickness of 0.03 mm can be laminated. In this case, the space factor is 87%. The amorphous ribbon 1 is strong against external force (external load stress) so that it can be bent at 180 degrees. On the other hand, the metal ribbon 3 has improved soft magnetic properties and increased saturation magnetic flux density, but is weak against external force. Therefore, in the present embodiment, the upper and lower surface layers (the uppermost layer and the lowermost layer) of the laminate 10 that is the exterior portion are configured by the amorphous ribbon 1 that is strong against external force. Thereby, even if an external force is applied to the amorphous ribbon 1 which is the upper and lower surface layers, a force is not directly applied to the metal ribbon 3, so that it is possible to prevent the laminate 10 from collapsing due to a crack or the like. it can.

ここで、積層部４の内部での金属薄帯３の破損について、図３を用いて説明する。図３（ａ）および図３（ｂ）は、金属薄帯３の積層断面図である。   Here, the breakage of the metal ribbon 3 inside the laminated portion 4 will be described with reference to FIG. FIG. 3A and FIG. 3B are laminated cross-sectional views of the metal ribbon 3.

図３（ａ）に示すように、金属薄帯３に折り目１３があると、金属薄帯３の層間に隙間１４が生じる。このように隙間１４が生じると、金属薄帯３の厚さ方向の占積率が小さくなり、モータの効率が低下する。   As shown in FIG. 3A, when the metal ribbon 3 has a fold 13, a gap 14 is generated between the layers of the metal ribbon 3. When the gap 14 is generated in this way, the space factor in the thickness direction of the metal ribbon 3 is reduced, and the efficiency of the motor is reduced.

この隙間１４を無くすために、上下より圧力を加えると、図３（ｂ）に示すように亀裂１５が発生することがある。このような亀裂１５が存在すると、モータの動作時に、金属薄帯３に形成される磁気特性分布に不連続で磁気特性が低下した部分が生じ、モータ特性の低下の原因となる。積層体１０の上下面に非晶質薄帯１を設置すると外力に対する耐性は向上するが、非晶質薄帯１の剛性は小さい。したがってボルト５で締結する際には、締結部から離れたところでは、金属薄帯３間に生じた隙間１４を狭めるために働く圧力は小さいので、折り目１３を圧縮して亀裂１５の発生を防ぐことができる。   If pressure is applied from above and below to eliminate this gap 14, cracks 15 may occur as shown in FIG. When such a crack 15 exists, when the motor is operated, a magnetic characteristic distribution formed in the thin metal strip 3 has a discontinuous portion where the magnetic characteristics are deteriorated, which causes a reduction in motor characteristics. When the amorphous ribbon 1 is installed on the upper and lower surfaces of the laminated body 10, the resistance to external force is improved, but the rigidity of the amorphous ribbon 1 is small. Therefore, when fastening with the bolt 5, the pressure acting to narrow the gap 14 formed between the thin metal strips 3 is small at a position away from the fastening portion, so the crease 13 is compressed to prevent the generation of the crack 15. be able to.

以上説明したように、本実施の形態によれば、硬度が高く曲げ性に優れる軟磁性の非晶質薄帯１を最上層と最下層に設置することを特徴とする。これにより、軟磁気特性に優れる結晶粒を有する金属薄帯３が非晶質薄帯１間に積層した積層体１０を搭載したモータ１００の磁気特性の低下を防ぐことができ、金属薄帯３を保護することができる。また、積層体１０の内部で破損が起こった場合でも、積層体１０の外形の形状を保つことができ、取扱いを容易にすることができる。   As described above, according to the present embodiment, the soft magnetic amorphous ribbon 1 having high hardness and excellent bendability is provided in the uppermost layer and the lowermost layer. As a result, it is possible to prevent a decrease in the magnetic properties of the motor 100 on which the laminated body 10 in which the metal ribbons 3 having crystal grains having excellent soft magnetic properties are laminated between the amorphous ribbons 1 is mounted. Can be protected. Moreover, even when damage occurs inside the laminated body 10, the outer shape of the laminated body 10 can be maintained, and the handling can be facilitated.

（実施の形態２）
本発明の実施の形態２について説明する。 (Embodiment 2)
A second embodiment of the present invention will be described.

図４を用いて、本発明の実施の形態２に係る磁性板の積層体１０について説明する。図４は、本実施の形態の積層体１０の断面構成図（図１（ａ）のＡ−Ｂ間の断面図）である。図４に示す積層体１０は、図２に示したモータ１００の磁心として用いられる。なお、図４において、図１と同じ構成要素には同一符号を付し、その説明は省略する。   The laminated body 10 of the magnetic board which concerns on Embodiment 2 of this invention is demonstrated using FIG. FIG. 4 is a cross-sectional configuration diagram (a cross-sectional view between A and B in FIG. 1A) of the laminate 10 according to the present embodiment. The laminate 10 shown in FIG. 4 is used as the magnetic core of the motor 100 shown in FIG. In FIG. 4, the same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof is omitted.

図４に示す積層体１０は、図１（ｂ）に示した構成と比べて、非晶質薄帯１を上下各々で２枚重ねにした点が異なる。非晶質薄帯１を２枚重ねとすることで、外力に対する耐久性が増す。一方、非晶質薄帯１は、金属薄帯３よりも軟磁気特性が劣る。非晶質薄帯１の比率が増えるとモータ効率が低下するので、金属薄帯３が主構成となるように、積層体１０に占める非晶質薄帯１の比率は２０％以下が望ましい（実施の形態１、３も同様）。   A laminated body 10 shown in FIG. 4 is different from the structure shown in FIG. 1B in that two amorphous ribbons 1 are stacked one above the other. The durability against external force is increased by stacking two amorphous ribbons 1. On the other hand, the amorphous ribbon 1 is inferior in soft magnetic properties to the metal ribbon 3. When the ratio of the amorphous ribbon 1 increases, the motor efficiency decreases. Therefore, the ratio of the amorphous ribbon 1 in the laminated body 10 is desirably 20% or less so that the metal ribbon 3 is a main component ( The same applies to the first and third embodiments).

（実施の形態３）
本発明の実施の形態３について説明する。 (Embodiment 3)
Embodiment 3 of the present invention will be described.

図５を用いて、本発明の実施の形態３に係る磁性板の積層体１０について説明する。図５は、本実施の形態の積層体１０の断面構成図（図１（ａ）のＡ−Ｂ間の断面図）である。図５に示す積層体１０は、図２に示したモータ１００の磁心として用いられる。なお、図５において、図１と同じ構成要素には同一符号を付し、その説明は省略する。   The laminated body 10 of the magnetic plate which concerns on Embodiment 3 of this invention is demonstrated using FIG. FIG. 5 is a cross-sectional configuration diagram (a cross-sectional view between A and B in FIG. 1A) of the laminate 10 of the present embodiment. The laminate 10 shown in FIG. 5 is used as the magnetic core of the motor 100 shown in FIG. In FIG. 5, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof is omitted.

図５に示す積層体１０は、図１（ｂ）または図４に示した構成と比べて、非晶質薄帯１が金属薄帯３に挟まれるように設けた点が異なる。例えば、非晶質薄帯１は、積層体１０の中央部分（金属薄帯３の積層方向の中央部分）に設けられてもよい。図３を用いて説明したように金属薄帯３に亀裂１５が発生した場合、この亀裂１５は、上下の金属薄帯３にとって応力集中を起こしやすい場所となり、破壊の起点となりやすい。そのため、２次的に上下の金属薄帯３にも亀裂１５が発生しやすくなる。これに対し、図５に示すように、金属薄帯３の積層方向の中央部分に、破壊されにくい非晶質薄帯１を設けておけば、亀裂１５が金属薄帯３の積層方向に連鎖して発生することを防止できる。   The laminated body 10 shown in FIG. 5 is different from the structure shown in FIG. 1B or 4 in that the amorphous ribbon 1 is provided between the metal ribbons 3. For example, the amorphous ribbon 1 may be provided at the central portion of the laminated body 10 (the central portion of the metal ribbon 3 in the stacking direction). As described with reference to FIG. 3, when the crack 15 occurs in the metal ribbon 3, the crack 15 becomes a place where stress concentration tends to occur in the upper and lower metal ribbons 3, and tends to be a starting point of fracture. Therefore, cracks 15 are likely to occur secondarily in the upper and lower metal ribbons 3. On the other hand, as shown in FIG. 5, if the amorphous ribbon 1 that is not easily broken is provided in the central portion of the metal ribbon 3 in the stacking direction, the crack 15 is chained in the stacking direction of the metal ribbon 3. Can be prevented.

本発明の磁性板の積層体及びモータは、トランス等の磁気応用した電子部品の用途にも適用できる。   The laminated body and motor of the magnetic plate of the present invention can also be applied to the use of magnetic electronic components such as transformers.

１ 非晶質薄帯
２ 固定用穴
３ 金属薄帯
４ 積層部
５ ボルト
６ ワッシャ
７ 金属基板
８ 回転子
９ 巻線
１０ 積層体
１１ スペーサ
１２ カラー
１３ 折り目
１４ 隙間
１５ 亀裂
１００ モータ DESCRIPTION OF SYMBOLS 1 Amorphous ribbon 2 Fixing hole 3 Metal ribbon 4 Laminated part 5 Bolt 6 Washer 7 Metal substrate 8 Rotor 9 Winding 10 Laminated body 11 Spacer 12 Color 13 Fold 14 Gap 15 Crack 15 Motor 100

Claims (5)

軟磁性の非晶質薄帯と、結晶粒を有する軟磁性の金属薄帯とが積層され、
少なくとも最上層と最下層が前記非晶質薄帯である、
磁性板の積層体。 A soft magnetic amorphous ribbon and a soft magnetic metal ribbon having crystal grains are laminated,
At least the uppermost layer and the lowermost layer are the amorphous ribbons,
A laminate of magnetic plates. 前記磁性板の積層体に占める前記非晶質薄帯の比率は、２０％以下である、
請求項１記載の磁性板の積層体。 The ratio of the amorphous ribbon in the laminate of the magnetic plates is 20% or less,
The laminated body of the magnetic board of Claim 1. 前記非晶質薄帯が、前記金属薄帯に挟まれて配置された、
請求項１記載の磁性板の積層体。 The amorphous ribbon is disposed between the metal ribbons,
The laminated body of the magnetic board of Claim 1. 前記非晶質薄帯が、前記金属薄帯の積層方向の中央部分にさらに配置された、
請求項３記載の磁性板の積層体。 The amorphous ribbon is further disposed in a central portion of the metal ribbon in the stacking direction;
A laminate of magnetic plates according to claim 3. 請求項１から４のいずれか１項に記載の磁性板の積層体を有する、
モータ。 It has the laminated body of the magnetic board of any one of Claim 1 to 4,
motor.
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