JP3482365B2 - Embedded magnet rotor - Google Patents
Embedded magnet rotorInfo
- Publication number
- JP3482365B2 JP3482365B2 JP33697699A JP33697699A JP3482365B2 JP 3482365 B2 JP3482365 B2 JP 3482365B2 JP 33697699 A JP33697699 A JP 33697699A JP 33697699 A JP33697699 A JP 33697699A JP 3482365 B2 JP3482365 B2 JP 3482365B2
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- hole
- permanent magnet
- laminated
- holes
- 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.)
- Expired - Lifetime
Links
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、板状磁性部材を
積層して形成された積層鉄心の外周部に設けられた穴部
に永久磁石で形成された複数の磁極が装着され、回転電
機の回転子として機能する磁石埋込型回転子に係り、特
に永久磁石を穴部内に固定するための構造に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary electric machine in which a plurality of magnetic poles formed of permanent magnets are mounted in holes provided in an outer peripheral portion of a laminated iron core formed by laminating plate-shaped magnetic members. The present invention relates to a magnet-embedded rotor that functions as a rotor, and particularly to a structure for fixing a permanent magnet in a hole.
【０００２】[0002]
【従来の技術】この種の従来の磁石埋込型回転子として
は、例えば特開平７−３２２５３８号公報に示されるよ
うに、永久磁石が装着される打抜き穴に沿って線状の穴
を形成し、この線状の穴と打抜き穴の縁との間に形成さ
れる柔軟に変形可能な線状の部位で永久磁石を押圧する
ことにより、又、特開平９−１６３６４９号公報に示さ
れるように、永久磁石の外周部に接着剤を含浸または塗
布した接着シートを配することにより、永久磁石を積層
鉄心に設けられた打抜き穴内に固定することがそれぞれ
提案されている。2. Description of the Related Art As a conventional magnet-embedded rotor of this type, as shown in, for example, Japanese Patent Laid-Open No. 7-322538, a linear hole is formed along a punched hole in which a permanent magnet is mounted. Then, by pressing the permanent magnet at the flexible deformable linear portion formed between the linear hole and the edge of the punched hole, as disclosed in JP-A-9-163649. It has been proposed to fix the permanent magnets in the punched holes provided in the laminated core by disposing an adhesive sheet impregnated or coated with an adhesive on the outer peripheral portion of the permanent magnets.
【０００３】[0003]
【発明が解決しようとする課題】従来の磁石埋込型回転
子は以上のように構成され、永久磁石を打抜き穴に装着
する際に、割れや欠けが発生するのを防止するために、
特開平７−３２２５３８号公報に示されるものでは、永
久磁石を押圧する線状の部位を柔軟に変形可能としてい
るので、固定が十分でなく回転電機の回転時に振動を発
生して、信頼性の低下を招き、又、特開平９−１６３６
４９号公報に示されるものでは、永久磁石の外周部に接
着剤を含浸または塗布した接着シートを配置しているの
で、各打抜き穴内における永久磁石の位置が一定せず、
磁気的バランスおよび重量バランスが悪くなり、性能の
低下を招くとともに接着剤の使用により自動化が困難と
なる等の問題点があった。The conventional magnet-embedded rotor is constructed as described above, and in order to prevent cracks and chips from occurring when the permanent magnet is mounted in the punching hole,
In Japanese Patent Application Laid-Open No. 7-322538, since the linear portion that presses the permanent magnet can be flexibly deformed, the fixing is not sufficient and vibration is generated during rotation of the rotating electric machine, resulting in reliability. In addition, it causes a decrease, and also, JP-A-9-1636.
In the one disclosed in Japanese Patent Publication No. 49, since an adhesive sheet impregnated with or coated with an adhesive is arranged on the outer peripheral portion of the permanent magnet, the position of the permanent magnet in each punched hole is not constant,
There is a problem that magnetic balance and weight balance are deteriorated, performance is deteriorated, and automation is difficult due to the use of an adhesive.
【０００４】この発明は上記のような問題点を解消する
ために成されたもので、永久磁石をバランス良く確実に
固定することにより、信頼性の向上を図ることが可能な
磁石埋込型回転子を提供することを目的とするものであ
る。The present invention has been made in order to solve the above problems, and it is a magnet-embedded rotation type which can improve reliability by securely fixing a permanent magnet in a well-balanced manner. The purpose is to provide children.
【０００５】[0005]
【課題を解決するための手段】この発明の請求項１に係
る磁石埋込型回転子は、板状磁性部材を積層して形成さ
れた積層鉄心と、積層鉄心の端面に周方向に所定の間隔
を介して配置されるとともに軸方向に貫通して形成され
た複数の穴部と、各穴部にそれぞれ嵌挿される永久磁石
と、各穴部の積層鉄心の中心側に沿ってそれぞれ延在し
永久磁石と対応する位置で穴部とスリット部を介し連通
して形成される注入穴部と、注入穴部およびスリット部
を介して注入され穴部と永久磁石の間に充填される樹脂
部材とを備えたものである。A magnet-embedded rotor according to claim 1 of the present invention has a laminated core formed by laminating plate-shaped magnetic members and a predetermined circumferential direction on an end face of the laminated core. A plurality of holes arranged at intervals and penetrating in the axial direction, permanent magnets fitted in the holes, and extending along the center side of the laminated core of each hole. An injection hole formed by communicating with the hole through the slit at a position corresponding to the permanent magnet, and a space filled between the hole and the permanent magnet injected through the injection hole and the slit. And a resin member to be used.
【０００６】又、この発明の請求項２に係る磁石埋込型
回転子は、請求項１において、注入穴部を穴部の周方向
中央部と対応する位置に形成したものである。According to a second aspect of the present invention, there is provided the magnet-embedded rotor according to the first aspect, wherein the injection hole portion is formed at a position corresponding to the central portion of the hole portion in the circumferential direction.
【０００７】又、この発明の請求項３に係る磁石埋込型
回転子は、請求項１または２において、注入穴部を穴部
から積層鉄心の中心側へ離れた位置に形成したものであ
る。The magnet-embedded rotor according to claim 3 of the present invention is the rotor according to claim 1 or 2, wherein the injection hole is formed at a position away from the hole toward the center of the laminated iron core. .
【０００８】又、この発明の請求項４に係る磁石埋込型
回転子は、請求項１において、樹脂部材を穴部と永久磁
石の積層鉄心中心側端面の間に充填したものである。According to a fourth aspect of the present invention, there is provided the magnet-embedded rotor according to the first aspect, wherein the resin member is filled between the hole and the end face of the permanent magnet on the center side of the laminated core.
【０００９】[0009]
【発明の実施の形態】実施の形態１．
以下、この発明の実施の形態を図に基づいて説明する。
図１はこの発明の実施の形態１における磁石埋込型回転
子の構成を示し、（Ａ）は正面図、（Ｂ）は（Ａ）にお
ける線Ｂ−Ｂに沿う断面を示す断面図、図２は図１にお
ける磁石埋込型回転子の積層鉄心の構成を示し、（Ａ）
は正面図、（Ｂ）は（Ａ）における線Ｂ−Ｂに沿う断面
を示す断面図、図３は図１における磁石埋込型回転子の
製造に適用される注入金型の構成を示す断面図、図４は
図３における注入金型に積層鉄心が嵌挿された状態を示
す断面図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. An embodiment of the present invention will be described below with reference to the drawings.
1A and 1B show the structure of a magnet-embedded rotor according to Embodiment 1 of the present invention. FIG. 1A is a front view, FIG. 1B is a cross-sectional view showing a cross section taken along line BB in FIG. 2 shows the structure of the laminated core of the magnet-embedded rotor in FIG. 1, (A)
Is a front view, (B) is a cross-sectional view showing a cross section taken along the line BB in (A), and FIG. 3 is a cross-sectional view showing the structure of an injection mold applied to the manufacture of the magnet-embedded rotor in FIG. 1. FIG. 4 and FIG. 4 are cross-sectional views showing a state in which the laminated iron core is fitted and inserted in the injection mold in FIG.
【００１０】図において、１は周方向に所定の間隔を介
して配置される磁石用穴部１ａ、この磁石用穴部１ａの
後述する積層鉄心の中心側の周方向中央部に配置される
注入用穴部１ｂ、および中心部に配置される軸用穴部１
ｃがそれぞれ形成された第１の板状磁性部材、２はこの
第１の板状磁性部材１の各穴部１ａ、１ｂ、１ｃと同様
の、磁石用穴部２ａ、注入用穴部２ｂ、軸用穴部２ｃ、
および磁石用穴部２ａと注入用穴部２ｂの間を連通する
スリット部２ｄがそれぞれ形成された第２の板状磁性部
材で、これら両板状磁性部材１、２を所定の組み合わせ
で積層し、各穴部１ａと２ａ、１ｂと２ｂ、１ｃと２ｃ
をそれぞれ一致させ、例えば抜きかしめ等で固着一体化
することにより積層鉄心３が構成される。In the figure, reference numeral 1 denotes a magnet hole portion 1a which is arranged at a predetermined interval in the circumferential direction, and an injection hole which is arranged at the center portion of the magnet hole portion 1a in the circumferential direction on the center side of a laminated core to be described later. Hole 1b and shaft hole 1 arranged at the center
The first plate-shaped magnetic member 2 in which c is formed is a magnet hole 2a, an injection hole 2b, which is similar to the holes 1a, 1b, and 1c of the first plate-shaped magnetic member 1, respectively. Shaft hole 2c,
And a second plate-shaped magnetic member in which a slit portion 2d for communicating between the magnet hole portion 2a and the injection hole portion 2b is formed, and both plate-shaped magnetic members 1 and 2 are laminated in a predetermined combination. , Each hole 1a and 2a, 1b and 2b, 1c and 2c
Are made to coincide with each other and are fixedly integrated by, for example, punching and caulking, so that the laminated core 3 is formed.
【００１１】４ａ、４ｂ、４ｃは両磁石用穴部１ａ、２
ａに対をなして嵌挿された永久磁石Ａ、Ｂ、Ｃで、例え
ば図１（Ｂ）に示すように第２の板状磁性部材２は、永
久磁石Ａ４ａと対応する位置に２枚、永久磁石Ｂ４ｂお
よび永久磁石Ｃ４ｃと対応する位置にはそれぞれ１枚ず
つが積層されている。５は各注入用穴部１ｂ、２ｂから
注入され、第２の板状磁性部材２のスリット部２ｄを介
して各磁石用穴部１ａ、２ａに充填された熱可塑性樹脂
でなる樹脂部材で、例えば鉄粉等の磁性粉体が混入され
ている。4a, 4b and 4c are holes 1a and 2 for both magnets.
With the permanent magnets A, B, and C that are fitted and inserted in a pair with a, for example, as shown in FIG. 1B, the second plate-shaped magnetic member 2 has two sheets at positions corresponding to the permanent magnet A4a. One piece is laminated at each position corresponding to the permanent magnet B4b and the permanent magnet C4c. Reference numeral 5 is a resin member made of a thermoplastic resin that is injected from the injection holes 1b and 2b and is filled in the magnet holes 1a and 2a through the slits 2d of the second plate-shaped magnetic member 2. For example, magnetic powder such as iron powder is mixed.
【００１２】６は積層鉄心３の軸用穴部１ｃ、２ｃに嵌
合された回転子軸、７は積層鉄心３に樹脂部材５を注入
するための注入金型で、図３に示すように樹脂供給穴部
８ａ、この樹脂供給穴部８ａから分岐する分岐穴部８
ｂ、およびこの分岐穴部８ｂから積層鉄心３の各注入用
穴部１ｂ、２ｂと対応する位置でそれぞれ開口される複
数の注入穴部８ｃを有する上型８と、積層鉄心３が嵌挿
可能な有底穴部９ａおよび、この有底穴部９ａの底部の
積層鉄心３の各磁石用穴部１ａ、２ａと対応する位置に
それぞれ突設され、各磁石用穴部１ａ、２ａと嵌合可能
な複数の突起部９ｂを有する下型９で構成されている。Reference numeral 6 denotes a rotor shaft fitted in the shaft holes 1c, 2c of the laminated iron core 3, and reference numeral 7 denotes an injection mold for injecting the resin member 5 into the laminated iron core 3, as shown in FIG. Resin supply hole 8a, branch hole 8 branched from this resin supply hole 8a
b, the upper die 8 having a plurality of injection hole portions 8c opened at positions corresponding to the injection hole portions 1b, 2b of the laminated iron core 3 from the branch hole portion 8b, and the laminated iron core 3 can be inserted and inserted. And a bottomed hole portion 9a and a bottom portion of the bottomed hole portion 9a, which are projectingly provided at positions corresponding to the magnet hole portions 1a and 2a of the laminated iron core 3 and are fitted into the magnet hole portions 1a and 2a. The lower mold 9 has a plurality of possible protrusions 9b.
【００１３】次に、上記のように構成される実施の形態
１における磁石埋込型回転子の製造方法について説明す
る。まず、打抜き加工により磁石用穴部１ａ、注入用穴
部１ｂ、軸用穴部１ｃを有する第１の板状磁性部材１、
および磁石用穴部２ａ、注入用穴部２ｂ、軸用穴部２
ｃ、スリット部２ｄを有する第２の板状磁性部材２をそ
れぞれ形成する。次いで、図２に示すように、第２の板
状磁性部材２を永久磁石Ａ４ａと対応する位置に２枚、
永久磁石Ｂ４ｂおよび永久磁石Ｃ４ｃと対応する位置に
はそれぞれ１枚ずつを配置するとともに、残りの部分に
は第１の板状磁性部材１を配置し、お互いの磁石用穴部
１ａ、２ａ、注入用穴部１ｂ、２ｂ、および軸用穴部１
ｃ、２ｃがそれぞれ一致するように積層して、例えば抜
きかしめ等により固着一体化することにより積層鉄心３
を形成する。Next, a method of manufacturing the magnet-embedded rotor according to the first embodiment having the above-described structure will be described. First, a first plate-shaped magnetic member 1 having a magnet hole portion 1a, an injection hole portion 1b, and a shaft hole portion 1c by punching,
And magnet hole 2a, injection hole 2b, shaft hole 2
c, and the second plate-shaped magnetic member 2 having the slit portion 2d is formed. Then, as shown in FIG. 2, two second plate-shaped magnetic members 2 are provided at positions corresponding to the permanent magnets A4a,
One sheet is arranged at each of the positions corresponding to the permanent magnet B4b and the permanent magnet C4c, and the first plate-shaped magnetic member 1 is arranged at the remaining portion, so that the magnet holes 1a, 2a, and the injection holes for the magnets are provided. Holes 1b, 2b, and shaft hole 1
c and 2c are laminated so that they coincide with each other, and the laminated core 3 is fixed and integrated by, for example, punching and caulking.
To form.
【００１４】次に、上記のようにして形成された積層鉄
心３を、図４に示すように各磁石用穴部１ａが各突起部
９ｂと一致するように下型９の有底穴部９ａ内に嵌挿す
る。次いで、積層鉄心３の各磁石用穴部１ａ、２ａ内に
永久磁石Ａ４ａ、永久磁石Ｂ４ｂ、永久磁石Ｃ４ｃの順
に挿入する。そして、上型８を各注入穴部８ｃが積層鉄
心３の注入用穴部１ｂの位置と一致するように下型９の
上部に載置し、図示はしないが締付治具により上型８お
よび下型９を固着させた後、所定の圧力により樹脂供給
穴部８ａから樹脂部材５を供給する。Next, as shown in FIG. 4, the laminated iron core 3 formed as described above has a bottomed hole portion 9a of the lower mold 9 so that each magnet hole portion 1a is aligned with each projection portion 9b. Insert it inside. Next, the permanent magnet A4a, the permanent magnet B4b, and the permanent magnet C4c are sequentially inserted into the magnet holes 1a and 2a of the laminated iron core 3. Then, the upper mold 8 is placed on the upper part of the lower mold 9 such that the respective injection holes 8c are aligned with the positions of the injection holes 1b of the laminated iron core 3, and the upper mold 8 is clamped by a tightening jig (not shown). After fixing the lower mold 9, the resin member 5 is supplied from the resin supply hole 8a by a predetermined pressure.
【００１５】すると、この樹脂部材５は上型８の分岐穴
部８ｂ、各注入穴部８ｃおよび積層鉄心３の各注入用穴
部１ｂ、２ｂ内を順に流れて、図１に示すようにスリッ
ト部２ｄを介して磁石用穴部１ａ、２ａ内に導かれ、各
永久磁石Ａ４ａ、Ｂ４ｂ、Ｃ４ｃを外周側に押圧した状
態で充填される。次に、この状態で加熱することにより
樹脂部材５を硬化させて積層鉄心３内に一体化する。次
いで、締付治具を緩めて上型８を外し、積層鉄心３を下
型９から取り出し軸用穴部１ｃ、２ｃに回転子軸６を嵌
合させて固着することにより磁石埋込型回転子が完成す
る。Then, the resin member 5 sequentially flows through the branch holes 8b of the upper die 8, the injection holes 8c, and the injection holes 1b, 2b of the laminated core 3 to form slits as shown in FIG. The permanent magnets A4a, B4b, and C4c are introduced into the magnet holes 1a and 2a through the portion 2d, and are filled while being pressed to the outer peripheral side. Next, by heating in this state, the resin member 5 is cured and integrated into the laminated core 3. Next, the tightening jig is loosened, the upper die 8 is removed, the laminated iron core 3 is taken out from the lower die 9, and the rotor shaft 6 is fitted and fixed in the shaft holes 1c and 2c. The child is completed.
【００１６】このように上記実施の形態１によれば、各
永久磁石Ａ４ａ、Ｂ４ｂ、Ｃ４ｃが嵌挿される各磁石用
穴部１ａ、２ａの中心側周方向中央部に注入用穴部１
ｂ、２ｂを形成するとともに、各永久磁石Ａ４ａ、Ｂ４
ｂ、Ｃ４ｃと対応する位置を各スリット部２ｄにより連
通させ、各注入用穴部１ｂ、２ｂおよびスリット部２ｄ
を介して、各磁石用穴部１ａ、２ａに樹脂部材５を充填
し、この樹脂部材５により各永久磁石Ａ４ａ、Ｂ４ｂ、
Ｃ４ｃを固定するようにしているので、バランス良く確
実に固定することができ、信頼性の向上を図ることが可
能になる。As described above, according to the first embodiment, the injection hole 1 is provided at the center of the magnet holes 1a, 2a into which the permanent magnets A4a, B4b, C4c are fitted and inserted in the center side circumferential direction.
b, 2b and each of the permanent magnets A4a, B4
b, C4c and the positions corresponding to C4c are communicated by each slit part 2d, and each injection hole part 1b, 2b and slit part 2d.
The resin member 5 is filled in each of the magnet holes 1a and 2a via the, and by the resin member 5, the permanent magnets A4a and B4b,
Since C4c is fixed, the C4c can be securely fixed in a well-balanced manner, and the reliability can be improved.
【００１７】又、注入用穴部１ｂ、２ｂを磁石用穴部１
ａ、２ａの中心側周方向中央部に形成したことにより、
図５からも明らかなように、注入用穴部１ｂ、２ｂが各
永久磁石Ａ４ａ、Ｂ４ｂ、Ｃ４ｃによって積層鉄心３内
を流れる磁束１０の通過を妨げることもなく、磁石埋込
型回転子の効率の低下を防止することが可能になり、さ
らに又、注入用穴部１ｂ、２ｂを磁石用穴部１ａ、２ａ
から離すことにより、磁束１０の通過をさらに妨げるこ
とがなくなり、より効率の低下を防止することが可能に
なる。Further, the injection holes 1b and 2b are replaced with the magnet holes 1.
Since it is formed in the central portion in the circumferential direction on the center side of a and 2a,
As is clear from FIG. 5, the injection hole portions 1b, 2b do not prevent passage of the magnetic flux 10 flowing through the laminated iron core 3 by the permanent magnets A4a, B4b, C4c, and the efficiency of the magnet-embedded rotor is improved. It is possible to prevent the decrease in the injection hole 1b, 2b and the magnet hole 1a, 2a.
By separating from, it is possible to prevent the passage of the magnetic flux 10 further, and to prevent the efficiency from lowering.
【００１８】さらに又、樹脂部材５を熱可塑性樹脂とし
たことにより、積層鉄心３への一体化が容易となり組立
作業性の向上を図ることが可能となり、又、樹脂部材５
に磁性粉体を混入、または樹脂部材５にプラスチックマ
グネットを用いることにより、樹脂部材５の層が形成さ
れたことによる磁路の透磁率の低下を抑制し、磁石埋込
型回転子の効率の低下を防止することができる。Furthermore, since the resin member 5 is made of a thermoplastic resin, the resin member 5 can be easily integrated with the laminated core 3 and the assembling workability can be improved.
By mixing magnetic powder in the resin or using a plastic magnet in the resin member 5, it is possible to suppress the decrease in the magnetic permeability of the magnetic path due to the formation of the layer of the resin member 5, and to improve the efficiency of the magnet-embedded rotor. The decrease can be prevented.
【００１９】なお、上記構成では永久磁石Ａ４ａと対応
する位置に、第２の板状磁性部材２を２枚配置すること
により、スリット部２ｄの開口面積を２倍にして、注入
用穴部１ｂ、２ｂの注入側から離れていても樹脂部材５
の注入が悪くならないように考慮されている。In the above structure, the two opening portions of the slit portion 2d are doubled by arranging two second plate-shaped magnetic members 2 at positions corresponding to the permanent magnets A4a, and the injection hole portion 1b is formed. Resin member 5 even if it is separated from the injection side of 2b.
The injections are taken into consideration so as not to deteriorate.
【００２０】実施の形態２．
図６はこの発明の実施の形態２における磁石埋込型回転
子の構成を示し、（Ａ）は正面図、（Ｂ）は（Ａ）にお
ける線Ｂ−Ｂに沿う断面を示す断面図である。図におい
て、上記実施の形態１におけると同様な部分は同一符号
を付して説明を省略する。１１は各注入用穴部１ｂ、２
ｂから注入され、第２の板状磁性部材２のスリット部２
ｄを介して、各磁石用穴部１ａ、２ａと各永久磁石Ａ４
ａ、Ｂ４ｂ、Ｃ４ｃの中心側端面との間に充填された熱
可塑性樹脂でなる樹脂部材で、例えば鉄粉等の磁性粉体
が混入されている。Embodiment 2. 6A and 6B show the structure of a magnet-embedded rotor according to Embodiment 2 of the present invention, FIG. 6A is a front view, and FIG. 6B is a sectional view showing a cross section taken along line BB in FIG. . In the figure, the same parts as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. 11 is each injection hole 1b, 2
b, and the slit portion 2 of the second plate-shaped magnetic member 2
through the magnet holes 1a, 2a and the permanent magnets A4.
A resin member made of a thermoplastic resin filled between a, B4b, and C4c and the end surface on the center side, and magnetic powder such as iron powder is mixed therein.
【００２１】このように上記実施の形態１によれば、各
永久磁石Ａ４ａ、Ｂ４ｂ、Ｃ４ｃが嵌挿される各磁石用
穴部１ａ、２ａの中心側周方向中央部に注入用穴部１
ｂ、２ｂを形成するとともに、各永久磁石Ａ４ａ、Ｂ４
ｂ、Ｃ４ｃと対応する位置を各スリット部２ｄにより連
通させ、各注入用穴部１ｂ、２ｂおよびスリット部２ｄ
を介して、各磁石用穴部１ａ、２ａと各永久磁石Ａ４
ａ、Ｂ４ｂ、Ｃ４ｃの中心側端面との間に樹脂部材１１
を充填し、この樹脂部材１１により各永久磁石Ａ４ａ、
Ｂ４ｂ、Ｃ４ｃを外周側に押圧して固定するようにして
いるので、より少ない量の樹脂部材１１でバランス良く
確実に固定することができ、信頼性の向上を図ることが
可能になる。As described above, according to the first embodiment, the injection hole 1 is formed in the central portion of the magnet holes 1a, 2a into which the permanent magnets A4a, B4b, C4c are fitted and inserted in the center side circumferential direction.
b, 2b and each of the permanent magnets A4a, B4
b, C4c and the positions corresponding to C4c are communicated by each slit part 2d, and each injection hole part 1b, 2b and slit part 2d.
Through the magnet holes 1a, 2a and the permanent magnets A4.
a, B4b, C4c and the resin member 11 between the end face on the center side.
Is filled with the resin member 11, and each permanent magnet A4a,
Since B4b and C4c are pressed and fixed to the outer peripheral side, the resin member 11 can be reliably fixed in a well-balanced manner with a smaller amount, and the reliability can be improved.
【００２２】[0022]
【発明の効果】以上のように、この発明の請求項１によ
れば、板状磁性部材を積層して形成された積層鉄心と、
積層鉄心の端面に周方向に所定の間隔を介して配置され
るとともに軸方向に貫通して形成された複数の穴部と、
各穴部にそれぞれ嵌挿される永久磁石と、各穴部の積層
鉄心の中心側に沿ってそれぞれ延在し永久磁石と対応す
る位置で穴部とスリット部を介し連通して形成される注
入穴部と、注入穴部およびスリット部を介して注入され
穴部と永久磁石の間に充填される樹脂部材とを備えたの
で、永久磁石をバランス良く確実に固定することにより
信頼性の向上を図ることが可能な磁石埋込型回転子を提
供することができる。As described above, according to claim 1 of the present invention, a laminated core formed by laminating plate-like magnetic members,
A plurality of hole portions formed on the end surface of the laminated core in the circumferential direction at a predetermined interval and penetrating in the axial direction,
A permanent magnet inserted into each hole, and an injection hole that extends along the center side of the laminated iron core of each hole and communicates with the hole through a slit at a position corresponding to the permanent magnet. And a resin member that is injected through the injection hole and the slit and filled between the hole and the permanent magnet, the reliability is improved by securely fixing the permanent magnet in a well-balanced manner. It is possible to provide a magnet-embedded rotor that can be used.
【００２３】又、この発明の請求項２によれば、請求項
１において、注入穴部を穴部の周方向中央部と対応する
位置に形成したので、永久磁石をバランス良く確実に固
定することにより信頼性の向上を図ることが可能である
ことは勿論、性能の低下を防止することが可能な磁石埋
込型回転子を提供することができる。According to the second aspect of the present invention, in the first aspect, the injection hole portion is formed at a position corresponding to the center portion in the circumferential direction of the hole portion, so that the permanent magnet can be securely fixed in a well-balanced manner. As a result, it is possible to provide a magnet-embedded rotor that can improve reliability and can prevent deterioration in performance.
【００２４】又、この発明の請求項３によれば、請求項
１または２において、注入穴部を穴部から積層鉄心の中
心側へ離れた位置に形成したので、信頼性の向上を図る
ことが可能であることは勿論、性能の低下をさらに防止
することが可能な磁石埋込型回転子を提供することがで
きる。According to a third aspect of the present invention, in the first or second aspect, the injection hole portion is formed from the hole portion to the inside of the laminated iron core.
Since it is formed at a position distant from the core side, it is possible to provide a magnet-embedded rotor capable of improving reliability and further preventing deterioration of performance.
【００２５】又、この発明の請求項４によれば、請求項
１において、樹脂部材を穴部と永久磁石の積層鉄心中心
側端面の間に充填したので、より少ない量の樹脂部材で
永久磁石をバランス良く確実に固定し、信頼性の向上を
図ることが可能な磁石埋込型回転子を提供することがで
きる。According to a fourth aspect of the present invention, in the first aspect, the resin member is filled between the hole and the end face of the permanent magnet on the center side of the laminated core, so that the permanent magnet can be made with a smaller amount of the resin member. Thus, it is possible to provide a magnet-embedded rotor that can be reliably fixed in a well-balanced manner and can improve reliability.
【図１】 この発明の実施の形態１における磁石埋込型
回転子の構成を示し、（Ａ）は正面図、（Ｂ）は（Ａ）
における線Ｂ−Ｂに沿う断面を示す断面図である。FIG. 1 shows a structure of a magnet-embedded rotor according to a first embodiment of the present invention, (A) is a front view, and (B) is (A).
3 is a cross-sectional view showing a cross section taken along line BB in FIG.
【図２】 図１における磁石埋込型回転子の積層鉄心の
構成を示し、（Ａ）は正面図、（Ｂ）は（Ａ）における
線Ｂ−Ｂに沿う断面を示す断面図である。2A and 2B show a structure of a laminated core of the magnet-embedded rotor in FIG. 1, FIG. 2A is a front view, and FIG. 2B is a cross-sectional view showing a cross section taken along line BB in FIG.
【図３】 図１における磁石埋込型回転子の製造に適用
される注入金型の構成を示す断面図である。FIG. 3 is a cross-sectional view showing a configuration of an injection mold applied to manufacture the magnet-embedded rotor in FIG.
【図４】 図３における注入金型に積層鉄心が嵌挿され
た状態を示す断面図である。FIG. 4 is a cross-sectional view showing a state in which a laminated iron core is inserted and inserted in the injection mold in FIG.
【図５】 図１における磁石埋込型回転子内を流れる磁
束の分布状を模式して示す図である。5 is a diagram schematically showing the distribution of magnetic flux flowing in the magnet-embedded rotor shown in FIG. 1. FIG.
【図６】 この発明の実施の形態２における磁石埋込型
回転子の構成を示し、（Ａ）は正面図、（Ｂ）は（Ａ）
における線Ｂ−Ｂに沿う断面を示す断面図である。FIG. 6 shows a structure of a magnet-embedded rotor according to a second embodiment of the present invention, (A) being a front view and (B) being (A).
3 is a cross-sectional view showing a cross section taken along line BB in FIG.
１ 第１の板状磁性部材、２ 第２の板状磁性部材、１
ａ，２ａ 磁石用穴部、１ｂ，２ｂ 注入用穴部、３
積層鉄心、４ａ 永久磁石Ａ、４ｂ 永久磁石Ｂ、４ｃ
永久磁石Ｃ、５，１１ 樹脂部材、６ 回転子軸、７
注入金型、８ 上型、９ 下型、１０ 磁束。1 1st plate-shaped magnetic member, 2 2nd plate-shaped magnetic member, 1
a, 2a magnet hole, 1b, 2b injection hole, 3
Laminated iron core, 4a Permanent magnet A, 4b Permanent magnet B, 4c
Permanent magnet C, 5,11 Resin member, 6 Rotor shaft, 7
Injection mold, 8 upper mold, 9 lower mold, 10 magnetic flux.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 長谷川 晃三 東京都千代田区丸の内二丁目２番３号 三菱電機株式会社内 (72)発明者 松原 浩樹 東京都千代田区丸の内二丁目２番３号 三菱電機株式会社内 (72)発明者 小島 直樹 東京都千代田区丸の内二丁目２番３号 三菱電機株式会社内 (72)発明者 相馬 雄介 東京都千代田区丸の内二丁目２番３号 三菱電機株式会社内 (72)発明者 鵜飼 義一 東京都千代田区丸の内二丁目２番３号 三菱電機株式会社内 (56)参考文献 特開 平５−83892（ＪＰ，Ａ) 特開 平10−304610（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H02K 1/27 H02K 1/22 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kozo Hasegawa 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Within Mitsubishi Electric Corporation (72) Inventor Hiroki Matsubara 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Incorporated (72) Inventor Naoki Kojima 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Yusuke Soma 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation ( 72) Inventor Yoshikazu Ukai 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (56) References JP-A-5-83892 (JP, A) JP-A-10-304610 (JP, A) ( 58) Fields surveyed (Int.Cl. 7 , DB name) H02K 1/27 H02K 1/22
Claims (4)
鉄心と、上記積層鉄心の端面に周方向に所定の間隔を介
して配置されるとともに軸方向に貫通して形成された複
数の穴部と、上記各穴部にそれぞれ嵌挿される永久磁石
と、上記各穴部の上記積層鉄心の中心側に沿ってそれぞ
れ延在し上記永久磁石と対応する位置で上記穴部とスリ
ット部を介し連通して形成される注入穴部と、上記注入
穴部およびスリット部を介して注入され上記穴部と上記
永久磁石の間に充填される樹脂部材とを備えたことを特
徴とする磁石埋込型回転子。1. A laminated iron core formed by laminating plate-shaped magnetic members, and a plurality of laminated iron cores which are arranged on an end surface of the laminated iron core at a predetermined interval in the circumferential direction and penetrate through in the axial direction. a bore, and a permanent magnet fitted respectively to each hole, said holes and Sri at a position corresponding to the extending Mashimashi the permanent magnet respectively along the center side of the laminated core of each hole
And a resin member which is injected through the injection hole and the slit and is filled between the hole and the permanent magnet. An embedded magnet type rotor.
る位置に形成されていることを特徴とする請求項１記載
の磁石埋込型回転子。2. The magnet-embedded rotor according to claim 1, wherein the injection hole portion is formed at a position corresponding to a central portion in the circumferential direction of the hole portion.
離れた位置に形成されていることを特徴とする請求項１
または２記載の磁石埋込型回転子。3. The injection hole portion is formed at a position apart from the hole portion toward the center side of the laminated iron core.
Alternatively, the magnet-embedded rotor according to the item 2.
心側端面の間に充填されていることを特徴とする請求項
１記載の磁石埋込型回転子。4. The magnet-embedded rotor according to claim 1, wherein the resin member is filled between the hole and the end surface of the permanent magnet on the center side of the laminated core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33697699A JP3482365B2 (en) | 1999-11-29 | 1999-11-29 | Embedded magnet rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33697699A JP3482365B2 (en) | 1999-11-29 | 1999-11-29 | Embedded magnet rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001157394A JP2001157394A (en) | 2001-06-08 |
| JP3482365B2 true JP3482365B2 (en) | 2003-12-22 |
Family
ID=18304343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33697699A Expired - Lifetime JP3482365B2 (en) | 1999-11-29 | 1999-11-29 | Embedded magnet rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3482365B2 (en) |
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|---|---|
| JP2001157394A (en) | 2001-06-08 |
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