JP3515912B2 - Motor stator - Google Patents
Motor statorInfo
- Publication number
- JP3515912B2 JP3515912B2 JP30701498A JP30701498A JP3515912B2 JP 3515912 B2 JP3515912 B2 JP 3515912B2 JP 30701498 A JP30701498 A JP 30701498A JP 30701498 A JP30701498 A JP 30701498A JP 3515912 B2 JP3515912 B2 JP 3515912B2
- Authority
- JP
- Japan
- Prior art keywords
- stator
- resin
- electric motor
- boundary
- split cores
- 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)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、複数個の分割コア
を環状に配置して固定子鉄心を構成し、この固定子鉄心
を樹脂によりモールド成形するようにした構成の電動機
の固定子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator of an electric motor having a structure in which a plurality of split cores are annularly arranged to form a stator core, and the stator core is molded with resin.
【０００２】[0002]
【発明が解決しようとする課題】この種の電動機の固定
子の従来例について図９ないし図１３を参照して説明す
る。これらのうち、図９の（ａ）ないし（ｄ）は、固定
子鉄心を組み立てるまでの工程を示し、図１０は組みて
られた固定子鉄心を示し、図１１は樹脂モールドした後
のモールド成形体を示している。A conventional example of a stator for an electric motor of this type will be described with reference to FIGS. 9 to 13. Of these, FIGS. 9A to 9D show steps up to assembling the stator core, FIG. 10 shows the assembled stator core, and FIG. 11 shows the molding after resin molding. Showing the body.
【０００３】固定子鉄心を組み立てる場合、まず、図９
（ａ）に示すように、打ち抜き加工により、鋼板１から
多数枚の分割コア用素子２を打ち抜く。そして、図９
（ｂ）に示すように、打ち抜かれた分割コア用素子２を
所定枚数（例えば４２枚）積層し、かしめ部３にてかし
めることにより分割コア４を形成する。分割コア４は、
図１０にも示すように、円弧状をなすヨーク部４ａと、
このヨーク部４ａの外周部に設けられた複数個のティー
ス４ｂと、ヨーク部４ａの周方向の両端部に設けられた
嵌合凸部４ｃ及び嵌合凹部４ｄとを有している。When assembling the stator core, first, referring to FIG.
As shown in (a), a large number of split core elements 2 are punched from the steel plate 1 by punching. And in FIG.
As shown in (b), a predetermined number (for example, 42) of punched-out split core elements 2 are stacked and crimped by a crimping portion 3 to form a split core 4. The split core 4 is
As shown in FIG. 10, a yoke portion 4a having an arc shape,
It has a plurality of teeth 4b provided on the outer peripheral portion of the yoke portion 4a, and a fitting convex portion 4c and a fitting concave portion 4d provided on both ends of the yoke portion 4a in the circumferential direction.
【０００４】このような構成の分割コア４をこの場合６
個用意し、隣り合った分割コア４同士を、隣り合った嵌
合凸部４ｃと嵌合凹部４ｄとを嵌合することにより連結
する（図９（ｃ）参照）。このようにして６個の分割コ
ア４を環状に連結することにより、固定子鉄心５を構成
する（図９（ｄ）及び図１０参照）。In this case, the split core 4 having such a structure is
Individually prepared, the adjacent split cores 4 are connected to each other by fitting the adjacent fitting protrusions 4c and fitting recesses 4d (see FIG. 9C). In this way, the stator core 5 is configured by connecting the six split cores 4 in an annular shape (see FIGS. 9D and 10).
【０００５】この後、固定子鉄心５を図示しない成形型
に入れて、絶縁性の樹脂によりモールド成形することに
より、図１１に示すモールド成形体６を得る。モールド
成形体６は、上記固定子鉄心５の外面のほぼ全体を樹脂
７で覆っていると共に、取付部６ａを一体に形成してい
る。この後、モールド成形体６の各ティース部６ｂに図
示しないコイルを巻装することにより、固定子が完成す
る。この固定子は、アウターロータ形の電動機の固定子
として使用される。このような方法により固定子を製造
した場合には、鋼板１の材料取りが良く、ロスが少ない
利点がある。Thereafter, the stator core 5 is put into a molding die (not shown) and molded with an insulating resin to obtain a molded body 6 shown in FIG. In the molded body 6, almost the entire outer surface of the stator core 5 is covered with the resin 7, and the mounting portion 6a is integrally formed. Then, a coil (not shown) is wound around each tooth 6b of the molded body 6 to complete the stator. This stator is used as a stator of an outer rotor type electric motor. When the stator is manufactured by such a method, there is an advantage that the material of the steel plate 1 is well taken and the loss is small.
【０００６】ところで、上記固定子鉄心５を樹脂７でモ
ールド成形する際に、図１２に示すように、隣り合った
分割コア４間の境界部８に隙間９が生じるが、成形状態
などにより、この隙間９は境界部８ごとにまちまちとな
るため、次のような問題点がある。By the way, when the stator core 5 is molded with the resin 7, as shown in FIG. 12, a gap 9 is formed at the boundary portion 8 between the adjacent split cores 4. Since the gap 9 is different for each boundary portion 8, there are the following problems.
【０００７】上記境界部８において、隙間９が形成され
ず、図１３に示すように、隣り合った分割コア４の端面
同士が積厚方向にずれた状態で接触していた場合には、
各分割コア用素子２の端面２ａに、その積厚方向にうず
電流が発生し、効率が低下してしまう。これとは逆に、
上記隙間９が大きい場合には、分割コア４間の磁気抵抗
が大きくなりすぎて、やはり効率が低下し、また、機械
的な強度も低下してしまう。When the gap 9 is not formed in the boundary portion 8 and the end faces of the adjacent split cores 4 are in contact with each other while being displaced in the stacking direction as shown in FIG. 13,
An eddy current is generated in the end face 2a of each split core element 2 in the stacking thickness direction, and the efficiency is reduced. On the contrary,
When the gap 9 is large, the magnetic resistance between the split cores 4 becomes too large, and the efficiency also decreases, and the mechanical strength also decreases.
【０００８】一方、上記隙間９が極微小な場合、或いは
分割コア４の端面同士が僅かに接触していたような場合
には、励磁振動により分割コア４の端面同士が微妙に当
たり、異常音が発生することがある。この場合、隙間９
には樹脂７はほとんど入らない。また、分割コア４のヨ
ーク部４ａの内周部及び外周部は樹脂７で覆われている
が、分割コア４は樹脂７に対して動き得る状態にある。On the other hand, when the gap 9 is extremely small, or when the end faces of the split cores 4 are slightly in contact with each other, the end faces of the split cores 4 subtly touch each other due to the exciting vibration, and an abnormal sound is produced. May occur. In this case, the gap 9
Almost no resin 7 enters. Further, the inner peripheral portion and the outer peripheral portion of the yoke portion 4a of the split core 4 are covered with the resin 7, but the split core 4 is in a state of being movable with respect to the resin 7.
【０００９】本発明は上記した事情に鑑みてなされたも
のであり、その目的は、隣り合った分割コア間の境界部
の隙間を極力安定させることができて、効率や機械的強
度を安定させることができると共に、異常音の発生を防
止できる電動機の固定子を提供するにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to stabilize the gap at the boundary between adjacent split cores as much as possible, thereby stabilizing efficiency and mechanical strength. (EN) Provided is a stator of an electric motor that can prevent abnormal noise from occurring.
【００１０】[0010]
【課題を解決するための手段】上記の目的を達成するた
めに、請求項１の発明は、複数個の分割コアを環状に配
置して固定子鉄心を構成し、この固定子鉄心を樹脂によ
りモールド成形するようにした構成の電動機の固定子に
おいて、隣り合った前記分割コア間の境界部に、当該境
界部に形成される主たる隙間より大きくて前記樹脂が入
り込む樹脂収容部を設けたことを特徴とするものであ
る。In order to achieve the above object, the invention according to claim 1 forms a stator core by arranging a plurality of split cores in an annular shape, and the stator core is made of resin. in the configuration of the motor stator which is adapted to molding the boundary portion between the divided cores adjacent, the boundary
It is characterized in that a resin accommodating portion which is larger than a main gap formed in the boundary portion and into which the resin enters is provided.
【００１１】上記した手段によれば、固定子鉄心を樹脂
によりモールド成形した際に、上記樹脂収容部に樹脂が
入り込むようになる。これにより、隣り合った分割コア
間の境界部において、樹脂収容部を除いた部分の主たる
隙間が極力一定になるように確保されるようになると共
に、樹脂収容部に入り込んだ樹脂により隣り合った分割
コアが強固に固定されるようになる。According to the above-mentioned means, when the stator core is molded with resin, the resin enters the resin containing portion. As a result, in the boundary portion between the adjacent split cores, the main gap of the portion excluding the resin containing portion is ensured to be as constant as possible, and the resin that has entered the resin containing portion is adjacent to each other. The split core becomes firmly fixed.
【００１２】この場合、樹脂収容部は、開口部の幅が
０．３ｍｍ以上で、断面積が０．３ｍｍ２以上となるよ
うに設定することが好ましい（請求項２の発明）。これ
によれば、樹脂収容部に樹脂を良好に入り込ませること
ができる。また、境界部において、樹脂収容部を除いた
部分の主たる隙間が０．０２〜０．１ｍｍとなるように
設定することが好ましい（請求項３の発明）。これによ
れば、隣り合った分割コアの端面同士が接触することに
よるうず電流の発生を防止できると共に、分割コア間の
磁気抵抗が大きくなりすぎることを防止でき、効率の低
下を防止できる。In this case, it is preferable that the resin accommodating portion has a width of the opening of 0.3 mm or more and a cross-sectional area of 0.3 mm 2 or more (the invention of claim 2). According to this, the resin can be satisfactorily made to enter the resin housing portion. Further, it is preferable to set the main gap of the boundary portion excluding the resin containing portion to be 0.02 to 0.1 mm (the invention of claim 3). According to this, it is possible to prevent the generation of an eddy current due to the contact between the end faces of the adjacent split cores, prevent the magnetic resistance between the split cores from becoming too large, and prevent a decrease in efficiency.
【００１３】各分割コアは、ヨーク部の外周部または内
周部に、コイルが巻装されるティースを有し、樹脂収容
部は、前記ヨーク部において前記ティースとは反対側に
設けることが好ましい（請求項４の発明）。これによれ
ば、ヨーク部を通る磁束の最短経路を確保でき、境界部
で磁気抵抗が大きくなりすぎることを防止できるように
なる。It is preferable that each split core has teeth around which a coil is wound on the outer peripheral portion or the inner peripheral portion of the yoke portion, and the resin accommodating portion is provided on the yoke portion on the side opposite to the teeth. (Invention of Claim 4). According to this, the shortest path of the magnetic flux passing through the yoke portion can be secured, and it becomes possible to prevent the magnetic resistance from becoming too large at the boundary portion.
【００１４】隣り合った分割コアのうちの一方には、先
端部が基端部よりも幅広な嵌合凸部を設けると共に、他
方には、前記嵌合凸部に対応する形状の嵌合凹部を設け
ていて、隣り合った分割コア同士は、前記嵌合凸部と嵌
合凹部とを嵌合することにより連結することが好ましい
（請求項５の発明）。これによれば、境界部の隙間が必
要以上に大きくなることを防止できる。One of the adjacent split cores is provided with a fitting projection whose tip is wider than the base, and the other is fitted with a fitting recess having a shape corresponding to the fitting projection. It is preferable that the split cores adjacent to each other are connected to each other by fitting the fitting convex portion and the fitting concave portion together (claim 5). According to this, it is possible to prevent the gap at the boundary portion from becoming larger than necessary.
【００１５】樹脂収容部を、境界部において分割コアの
ヨーク部の内周部と外周部の両方に設けたり（請求項６
の発明）、境界部に臨む両分割コアにそれぞれ設けたり
（請求項７の発明）、或いは固定子鉄心の複数箇所の境
界部のうち、周方向に１箇所おきの境界部に設けたり
（請求項８の発明）することもできる。また、樹脂収容
部の開口部から奥行き方向に延びた面と、相手側の分割
コアの樹脂収容部に臨む面とを対向させることが好まし
い（請求項９の発明）。The resin accommodating portion may be provided at both the inner peripheral portion and the outer peripheral portion of the yoke portion of the split core at the boundary portion (claim 6).
Of the invention), or each of the split cores facing the boundary portion (invention of claim 7), or among the boundary portions at a plurality of positions of the stator core, at every other boundary portion in the circumferential direction (claim). (Invention of item 8)). Further, it is preferable that the surface extending in the depth direction from the opening of the resin housing portion and the surface of the split core on the opposite side facing the resin housing portion are opposed to each other (the invention of claim 9).
【００１６】[0016]
【発明の実施の形態】以下、本発明の第１実施例につい
て、図１ないし図５を参照して説明する。まず、図３に
おいて、固定子鉄心１１は、複数個この場合６個の分割
コア１２を環状に配置して構成されている。BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of the present invention will be described below with reference to FIGS. First, in FIG. 3, the stator core 11 is configured by arranging a plurality of, in this case, six split cores 12 in an annular shape.
【００１７】各分割コア１２は、従来と同様に、鋼板か
ら打ち抜かれた分割コア用素子１３を所定枚数（例えば
４２枚）積層し、かしめ部１４にてかしめることにより
形成されたものであり、図２にも示すように、円弧状を
なすヨーク部１５と、このヨーク部１５の外周部に設け
られた複数個のティース１６，１７と、ヨーク部１５の
周方向の一方の端部に設けられた嵌合凸部１８と、ヨー
ク部１５の周方向の他方の端部に設けられた嵌合凹部１
９及び樹脂収容部２０とを有した構成となっている。Each of the split cores 12 is formed by stacking a predetermined number (for example, 42) of split core elements 13 punched out from a steel plate and crimping the crimped portions 14, as in the conventional case. As shown in FIG. 2, the yoke portion 15 having an arc shape, the plurality of teeth 16 and 17 provided on the outer peripheral portion of the yoke portion 15, and one end portion of the yoke portion 15 in the circumferential direction. The fitting convex portion 18 provided and the fitting concave portion 1 provided at the other end of the yoke portion 15 in the circumferential direction.
9 and the resin accommodating portion 20.
【００１８】このうち、ティース１６とティース１７と
は形状が異なっていて、これらティース１６とティース
１７は周方向に交互に配置されている。また、嵌合凸部
１８は、図１にも示すように、平面形状が、先端部が基
端部よりも幅広となる台形状に形成され、嵌合凹部１９
は、その嵌合凸部１８に対応して、開口部が底部よりも
幅狭となる台形状に形成されている。そして、樹脂収容
部２０は、ヨーク部１５においてティース１６，１７と
は反対側の内周部側に、Ｌ字形に切り欠くように形成さ
れている。Of these, the teeth 16 and the teeth 17 have different shapes, and the teeth 16 and the teeth 17 are alternately arranged in the circumferential direction. Further, as shown in FIG. 1, the fitting protrusion 18 is formed in a trapezoidal shape in which the front end is wider than the base end, and the fitting recess 19 is formed.
Has a trapezoidal shape in which the opening is narrower than the bottom, corresponding to the fitting protrusion 18. The resin containing portion 20 is formed in the yoke portion 15 on the inner peripheral side opposite to the teeth 16 and 17 so as to be cut out in an L shape.
【００１９】このような構成の分割コア１２同士を、隣
り合った嵌合凸部１８と嵌合凹部１９とを嵌合すること
により連結し、６個の分割コア１２を環状に連結するこ
とにより、図３の固定子鉄心１１が形成される。The split cores 12 having such a structure are connected by fitting the adjacent fitting protrusions 18 and fitting recesses 19, and the six split cores 12 are connected in an annular shape. The stator core 11 of FIG. 3 is formed.
【００２０】次に、上記固定子鉄心１１を図示しない成
形型に入れて、絶縁性の樹脂２１（図１参照）によりモ
ールド成形することにより、モールド成形体（図１１参
照）を得る。これにより、固定子鉄心１１の外面のほぼ
全体が樹脂２１により覆われる。このとき、図１に示す
ように、隣り合った分割コア１２間の各境界部２２にお
ける各樹脂収容部２０にも樹脂２１が入り込んだ状態と
なる。また、各樹脂収容部２０に樹脂２１が入り込むこ
とにより、各境界部２２において、樹脂収容部２０を除
いた部分の主たる隙間２３にも樹脂２１が入りやすくな
る。Next, the stator core 11 is put into a molding die (not shown) and molded with an insulating resin 21 (see FIG. 1) to obtain a molded body (see FIG. 11). As a result, almost the entire outer surface of the stator core 11 is covered with the resin 21. At this time, as shown in FIG. 1, the resin 21 also enters each resin housing portion 20 at each boundary portion 22 between the adjacent split cores 12. Further, when the resin 21 enters the resin housing portions 20, the resin 21 easily enters the main gaps 23 of the boundary portions 22 except the resin housing portion 20.
【００２１】ここで、図１において、上記樹脂収容部２
０の開口部２０ａから奥行き方向に延びた面２０ｂと、
相手側の分割コア１２の樹脂収容部２０に臨む面１２ａ
とは対向している。そして、この場合、樹脂収容部２０
の開口部２０ａの幅寸法Ａ１は、０．３ｍｍ以上、例え
ば約１ｍｍ、奥行き寸法Ａ２も約１ｍｍに設定されてい
て、樹脂収容部２０の断面積Ｓ１は、約１ｍｍ２に設定
されている。Here, referring to FIG. 1, the resin container 2
A surface 20b extending from the opening 20a of 0 in the depth direction,
Face 12a of the split core 12 on the other side facing the resin containing portion 20
Is opposed to. And in this case, the resin containing portion 20
The width dimension A1 of the opening 20a is set to 0.3 mm or more, for example, about 1 mm, and the depth dimension A2 is also set to about 1 mm, and the cross-sectional area S1 of the resin containing portion 20 is set to about 1 mm 2 .
【００２２】このようにして得られたモールド成形体の
各ティース部に、コイル２４（図５参照）を巻装するこ
とにより、固定子が完成する。The stator is completed by winding the coil 24 (see FIG. 5) around each tooth portion of the molded body thus obtained.
【００２３】上記した実施例によれば、次のような効果
を得ることができる。まず、上記した実施例において、
６個の分割コア１２を環状に連結して構成された固定子
鉄心１１を樹脂２１によりモールド成形した際に、隣り
合った分割コア１２間の各境界部２２に設けられた樹脂
収容部２０に樹脂２１が入り込むようになる。これによ
り、各境界部２２において、樹脂収容部２０を除いた部
分の主たる隙間２３が極力一定になるように確保される
ようになる。本実施例においては、境界部２２における
上記隙間２３を、０．０２ｍｍ〜０．１ｍｍの範囲、好
ましくは０．０５ｍｍとなるようにしている。According to the above-mentioned embodiment, the following effects can be obtained. First, in the above embodiment,
When the stator core 11 formed by connecting the six split cores 12 in an annular shape is molded with the resin 21, the resin cores 20 are provided in the boundary portions 22 between the adjacent split cores 12. The resin 21 comes to enter. As a result, in each of the boundary portions 22, the main gap 23 in the portion excluding the resin containing portion 20 is ensured to be as constant as possible. In the present embodiment, the gap 23 at the boundary portion 22 is set in the range of 0.02 mm to 0.1 mm, preferably 0.05 mm.
【００２４】ここで、図４に示すように、境界部２２に
おける上記隙間２３が、０．０２ｍｍよりも小さい場合
には、隣り合った分割コア１２の端面同士が接触しやす
くなり、接触することに基づくうず電流の発生により効
率が低下し、また、０．１ｍｍよりも大きい場合には、
隣り合った分割コア１２間の磁気抵抗が大きくなりすぎ
て、やはり効率が低下してしまうが、上記隙間２３を
０．０２ｍｍ〜０．１ｍｍの範囲とすることにより、効
率を安定させることができる。Here, as shown in FIG. 4, when the gap 23 at the boundary portion 22 is smaller than 0.02 mm, the end faces of the adjacent split cores 12 are likely to come into contact with each other, and they should come into contact with each other. Efficiency decreases due to the generation of eddy current due to
Although the magnetic resistance between the adjacent split cores 12 becomes too large and the efficiency also decreases, the efficiency can be stabilized by setting the gap 23 in the range of 0.02 mm to 0.1 mm. .
【００２５】また、樹脂収容部２０に入り込んだ樹脂２
１により隣り合った分割コア１２が強固に固定されると
共に、隣り合った分割コア１２間に樹脂２１が介在する
ようになるため、機械的強度をアップできると共に、隣
り合った分割コア１２間で励磁振動による異常音が発生
することを防止できるようになる。Further, the resin 2 that has entered the resin accommodating portion 20.
1, the adjacent split cores 12 are firmly fixed, and the resin 21 is interposed between the adjacent split cores 12. Therefore, the mechanical strength can be increased and the adjacent split cores 12 can be connected to each other. It becomes possible to prevent the generation of abnormal sound due to the excitation vibration.
【００２６】さらに、上記実施例において、樹脂収容部
２０の開口部２０ａの幅寸法Ａ１は、０．３ｍｍ以上、
例えば約１ｍｍ、奥行き寸法Ａ２も約１ｍｍに設定され
ていて、樹脂収容部２０の断面積Ｓ１は、約１ｍｍ２に
設定していることにより、樹脂収容部２０に樹脂２１が
良好に入り込むようになる。ちなみに、樹脂収容部２０
の開口部２０ａの幅寸法Ａ１が０．３ｍｍよりも小さい
場合には、樹脂収容部２０に樹脂２１が入りにくく、ま
た、樹脂収容部２０の断面積Ｓ１が０．３ｍｍ２よりも
小さい場合には、樹脂収容部２０に樹脂２１が入り込ん
でも、上記効果を十分には得ることができない。Further, in the above embodiment, the width dimension A1 of the opening 20a of the resin containing portion 20 is 0.3 mm or more,
For example, the depth dimension A2 is also set to about 1 mm, and the cross-sectional area S1 of the resin containing portion 20 is set to about 1 mm 2 , so that the resin 21 can enter the resin containing portion 20 well. Become. By the way, the resin container 20
When the width dimension A1 of the opening 20a is smaller than 0.3 mm, it is difficult for the resin 21 to enter the resin housing portion 20, and when the cross-sectional area S1 of the resin housing portion 20 is smaller than 0.3 mm 2. However, even if the resin 21 enters the resin container 20, the above effect cannot be sufficiently obtained.
【００２７】また、樹脂収容部２０の開口部２０ａから
奥行き方向に延びた面２０ｂと、相手側の分割コア１２
の樹脂収容部２０に臨む面１２ａとを対向させているの
で、樹脂２１が樹脂収容部２０に入り込む際には、それ
ら面２０ｂ及び面１２ａに対する樹脂２１の圧力が極力
均等に作用し、また、励磁振動により分割コア１２が振
動した際には、それらの面２０ｂ，１２ａから樹脂１２
に対して圧力が極力均等に作用するようになる。このた
め、樹脂収容部２０部分、ひいては境界部２２部分の状
態を極力安定させることができる。Further, the surface 20b extending in the depth direction from the opening 20a of the resin containing portion 20 and the split core 12 on the mating side.
Since the surface 12a of the resin 21 faces the resin containing portion 20, the pressure of the resin 21 against the surface 20b and the surface 12a acts as evenly as possible when the resin 21 enters the resin containing portion 20, and When the split core 12 vibrates due to the excitation vibration, the resin 12 passes through the surfaces 20b and 12a.
The pressure will be applied as evenly as possible. Therefore, it is possible to stabilize the state of the resin containing portion 20 and eventually the boundary portion 22 as much as possible.
【００２８】さらに、隣り合った分割コア１２同士は、
一方に設けた嵌合凸部１８と他方に設けた嵌合凹部１９
とを嵌合させることにより連結しているので、それら隣
り合った分割コア１２間の隙間２３が必要以上に大きく
なることを防止できる。Furthermore, the adjacent split cores 12 are
Fitting convex portion 18 provided on one side and fitting concave portion 19 provided on the other side
Since they are connected by fitting and, it is possible to prevent the gap 23 between the adjacent split cores 12 from becoming larger than necessary.
【００２９】加えて、樹脂収容部２０は、ヨーク部１５
においてティース１６，１７とは反対側である内周部に
設けているので、図５に示すように、ヨーク部１５を通
る磁束２５の最短経路を確保でき、境界部２２で磁気抵
抗が大きくなりすぎることを防止できるようになる。In addition, the resin containing portion 20 has a yoke portion 15
In FIG. 5, since it is provided on the inner peripheral portion opposite to the teeth 16 and 17, the shortest path of the magnetic flux 25 passing through the yoke portion 15 can be secured, and the magnetic resistance increases at the boundary portion 22. You will be able to prevent too much.
【００３０】図６は本発明の第２実施例を示したもので
あり、この第２実施例は、請求項６に対応する実施例で
あり、上記した第１実施例とは次の点が異なっている。
すなわち、樹脂収容部２０を、境界部２２において、図
６中、左側の分割コア１２のヨーク部１５の内周部と外
周部との両方に設けていて、各樹脂収容部２０に樹脂２
１が入り込んでいる。FIG. 6 shows a second embodiment of the present invention. This second embodiment is an embodiment corresponding to claim 6, and the following points are different from the first embodiment described above. Is different.
That is, the resin housing portions 20 are provided at the boundary portion 22 at both the inner peripheral portion and the outer peripheral portion of the yoke portion 15 of the split core 12 on the left side in FIG.
1 is in.
【００３１】このような構成とした第２実施例によれ
ば、境界部２２において、樹脂収容部２０を除いた部分
の主たる隙間２３を一層確実に確保できて、異常音の発
生を一層防止でき、また、機械的強度を一層向上でき
る。According to the second embodiment having such a structure, in the boundary portion 22, the main gap 23 other than the resin containing portion 20 can be more surely secured, and the generation of abnormal sound can be further prevented. Moreover, the mechanical strength can be further improved.
【００３２】図７は本発明の第３実施例を示したもので
あり、この第３実施例は、請求項７に対応する実施例で
あり、上記した第１及び第２実施例とは次の点が異なっ
ている。すなわち、樹脂収容部２６を、境界部２２に臨
む両分割コア１２の内周部側にそれぞれ設けている。こ
の場合、１個の樹脂収容部２６の大きさは、第１実施例
の樹脂収容部２０よりも少し小さく形成している。この
ような構成とした第３実施例によれば、機械的強度が一
層向上し、また、樹脂収容部２６，２６が、境界部２２
において周方向のほぼ中央部となり、バランスが良くな
る。FIG. 7 shows a third embodiment of the present invention. This third embodiment corresponds to claim 7 and is different from the first and second embodiments described above. Is different. That is, the resin accommodating portion 26 is provided on the inner peripheral side of each of the split cores 12 facing the boundary portion 22. In this case, the size of one resin housing portion 26 is made slightly smaller than that of the resin housing portion 20 of the first embodiment. According to the third embodiment having such a configuration, the mechanical strength is further improved, and the resin accommodating portions 26, 26 have the boundary portion 22.
At the center of the circumferential direction, the balance is improved.
【００３３】図８は本発明の第４実施例を示したもので
あり、この第４実施例は、請求項８に対応する実施例で
あり、上記した第１実施例とは次の点が異なっている。
すなわち、樹脂収容部２０を、固定子鉄心１１の６箇所
の境界部２２のうち、周方向に１箇所おきの境界部２２
に設けている。FIG. 8 shows a fourth embodiment of the present invention. This fourth embodiment is an embodiment corresponding to claim 8, and the following points are different from the above-mentioned first embodiment. Is different.
That is, among the six boundary portions 22 of the stator core 11, the resin accommodating portion 20 is divided into the boundary portions 22 at every other position in the circumferential direction.
It is provided in.
【００３４】本発明は、上記した各実施例にのみ限定さ
れるものではなく、次のように変形または拡張すること
ができる。上記した実施例では、分割コア１２のヨーク
部１５の外周部にティース１６，１７を設けた構成の固
定子（アウターロータ形の電動機の固定子）を例示した
が、本発明は、ヨーク部の内周部にティースを設けた構
成の固定子（インナーロータ形の電動機の固定子）に適
用することもできる。The present invention is not limited to the above-mentioned embodiments, but can be modified or expanded as follows. In the above-described embodiment, the stator (the stator of the outer rotor type electric motor) having the teeth 16 and 17 provided on the outer peripheral portion of the yoke portion 15 of the split core 12 is illustrated, but the present invention is not limited to this. It can also be applied to a stator having inner teeth provided with teeth (stator of an inner rotor type electric motor).
【００３５】[0035]
【発明の効果】以上の説明から明らかなように、本発明
によれば次のような効果を得ることができる。請求項１
の電動機の固定子によれば、複数個の分割コアを環状に
配置して構成された固定子鉄心を樹脂によりモールド成
形した際に、隣り合った分割コア間の境界部に設けられ
た樹脂収容部に樹脂が入り込むようになるので、隣り合
った分割コア間の境界部の隙間を極力安定させることが
できて、効率や機械的強度を安定させることができると
共に、異常音の発生を防止できるようになる。As is apparent from the above description, according to the present invention, the following effects can be obtained. Claim 1
According to the stator of the electric motor, when the stator core, which is formed by arranging a plurality of split cores in an annular shape, is molded with resin, the resin housing is provided at the boundary between the adjacent split cores. Since the resin comes into the part, the gap at the boundary between the adjacent split cores can be stabilized as much as possible, the efficiency and mechanical strength can be stabilized, and abnormal noise can be prevented. Like
【００３６】請求項２の電動機の固定子によれば、樹脂
収容部に樹脂を良好に入り込ませることができる。請求
項３の電動機の固定子によれば、隣り合った分割コアの
端面同士が接触することによるうず電流の発生を防止で
きると共に、分割コア間の磁気抵抗が大きくなりすぎる
ことを防止でき、効率の低下を防止できる。According to the stator of the electric motor of the second aspect, the resin can be satisfactorily introduced into the resin containing portion. According to the stator of the electric motor of claim 3, it is possible to prevent generation of an eddy current due to contact between the end faces of the adjacent split cores, and it is possible to prevent the magnetic resistance between the split cores from becoming too large. Can be prevented.
【００３７】請求項４の電動機の固定子によれば、ヨー
ク部を通る磁束の最短経路を確保でき、境界部で磁気抵
抗が大きくなりすぎることを防止できるようになる。請
求項５の電動機の固定子によれば、境界部の隙間が必要
以上に大きくなることを防止できる。According to the stator of the electric motor of claim 4, the shortest path of the magnetic flux passing through the yoke can be secured, and the magnetic resistance at the boundary can be prevented from becoming too large. According to the stator of the electric motor of claim 5, it is possible to prevent the gap at the boundary portion from becoming larger than necessary.
【００３８】請求項６の電動機の固定子によれば、境界
部において、樹脂収容部を除いた部分の主たる隙間を一
層確実に確保できて、異常音の発生を一層防止でき、ま
た、機械的強度を一層向上できる。請求項７の電動機の
固定子によれば、機械的強度を一層向上でき、また、バ
ランスも良くできるようになる。請求項８の電動機の固
定子においても、請求項１とほぼ同様な作用効果を得る
ことができる。According to the stator of the electric motor of claim 6, in the boundary portion, the main gap of the portion excluding the resin accommodating portion can be more surely secured, and abnormal noise can be further prevented from occurring. The strength can be further improved. According to the stator of the electric motor of claim 7, the mechanical strength can be further improved and the balance can be improved. Also in the stator of the electric motor of claim 8, it is possible to obtain substantially the same operational effect as in claim 1.
【図１】本発明の第１実施例を示す要部の拡大横断面図FIG. 1 is an enlarged cross-sectional view of a main part showing a first embodiment of the present invention.
【図２】分割コアの平面図FIG. 2 is a plan view of a split core.
【図３】固定子鉄心の斜視図FIG. 3 is a perspective view of a stator core.
【図４】境界部における隙間と効率との関係を示す特性
線図FIG. 4 is a characteristic diagram showing the relationship between the clearance at the boundary and efficiency.
【図５】作用説明用の要部の平面図FIG. 5 is a plan view of the main part for explaining the operation.
【図６】本発明の第２実施例を示す図１相当図FIG. 6 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.
【図７】本発明の第３実施例を示す図１相当図FIG. 7 is a view corresponding to FIG. 1 showing a third embodiment of the present invention.
【図８】本発明の第４実施例を示す図３相当図FIG. 8 is a diagram corresponding to FIG. 3 showing a fourth embodiment of the present invention.
【図９】従来例において、固定子鉄心の組み立て工程を
示す図FIG. 9 is a diagram showing a process of assembling a stator core in a conventional example.
【図１０】図３相当図FIG. 10 is a view corresponding to FIG.
【図１１】モールド成形体の斜視図FIG. 11 is a perspective view of a molded body.
【図１２】図１相当図FIG. 12 is a view equivalent to FIG.
【図１３】分割コアの端面同士が積厚方向にずれて接触
した状態の縦断面図FIG. 13 is a vertical cross-sectional view showing a state where the end faces of the split core are in contact with each other while being displaced in the stacking direction.
１１は固定子鉄心、１２は分割コア、１２ａは面（分割
コアの樹脂収容部に臨む面）、１５はヨーク部、１６、
１７はティース、１８は嵌合凸部、１９は嵌合凹部、２
０は樹脂収容部、２０ａは開口部、２０ｂは面（樹脂収
容部の開口部から奥行き方向に延びた面）、２１は樹
脂、２２は境界部、２３は隙間、２４はコイル、２６は
樹脂収容部を示す。Reference numeral 11 is a stator core, 12 is a split core, 12a is a surface (a surface of the split core facing the resin containing portion), 15 is a yoke portion, 16,
Reference numeral 17 is a tooth, 18 is a fitting convex portion, 19 is a fitting concave portion, 2
0 is a resin housing portion, 20a is an opening portion, 20b is a surface (a surface extending in the depth direction from the opening portion of the resin housing portion), 21 is resin, 22 is a boundary portion, 23 is a gap, 24 is a coil, and 26 is resin. The accommodation part is shown.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02K 1/18 ─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) H02K 1/18
Claims (9)
子鉄心を構成し、この固定子鉄心を樹脂によりモールド
成形するようにした構成の電動機の固定子において、 隣り合った前記分割コア間の境界部に、当該境界部に形
成される主たる隙間より大きくて前記樹脂が入り込む樹
脂収容部を設けたことを特徴とする電動機の固定子。1. A stator of an electric motor having a structure in which a plurality of split cores are annularly arranged to form a stator core, and the stator core is molded with resin. the boundary between the shape on the boundary portion
A stator for an electric motor, characterized in that a resin accommodating portion which is larger than a main gap formed therein and into which the resin enters is provided.
以上で、断面積が０．３ｍｍ２以上であることを特徴と
する請求項１記載の電動機の固定子。2. The resin containing portion has an opening width of 0.3 mm.
The stator of the electric motor according to claim 1, wherein the sectional area is 0.3 mm 2 or more.
分の主たる隙間が０．０２〜０．１ｍｍであることを特
徴とする請求項１記載の電動機の固定子。3. The stator for an electric motor according to claim 1, wherein a main gap in the boundary portion excluding the resin containing portion is 0.02 to 0.1 mm.
内周部に、コイルが巻装されるティースを有し、樹脂収
容部は、前記ヨーク部において前記ティースとは反対側
に設けられていることを特徴とする請求項１記載の電動
機の固定子。4. Each of the split cores has a tooth around which a coil is wound on the outer peripheral portion or the inner peripheral portion of the yoke portion, and the resin accommodating portion is provided on the opposite side of the yoke portion from the tooth. The stator of the electric motor according to claim 1, wherein
先端部が基端部よりも幅広な嵌合凸部を設けていると共
に、他方には、前記嵌合凸部に対応する形状の嵌合凹部
を設けていて、隣り合った分割コア同士は、前記嵌合凸
部と嵌合凹部とを嵌合することにより連結されているこ
とを特徴とする請求項１記載の電動機の固定子。5. One of the split cores adjacent to each other,
The distal end portion is provided with a fitting convex portion wider than the base end portion, and the other is provided with a fitting concave portion having a shape corresponding to the fitting convex portion, and adjacent split cores are The stator of the electric motor according to claim 1, wherein the fitting convex portion and the fitting concave portion are connected to each other by fitting.
のヨーク部の内周部と外周部の両方に設けたことを特徴
とする請求項１記載の電動機の固定子。6. The stator of an electric motor according to claim 1, wherein the resin accommodating portion is provided at both the inner peripheral portion and the outer peripheral portion of the yoke portion of the split core at the boundary portion.
にそれぞれ設けたことを特徴とする請求項１記載の電動
機の固定子。7. The stator of an electric motor according to claim 1, wherein the resin containing portion is provided on each of the split cores facing the boundary portion.
境界部のうち、周方向に１箇所おきの境界部に設けたこ
とを特徴とする請求項１記載の電動機の固定子。8. The stator of an electric motor according to claim 1, wherein the resin containing portion is provided at every other boundary portion in the circumferential direction among the boundary portions at a plurality of positions of the stator core.
びた面と、相手側の分割コアの樹脂収容部に臨む面とが
対向していることを特徴とする請求項１記載の電動機の
固定子。9. The electric motor according to claim 1, wherein a surface extending in the depth direction from the opening of the resin containing portion and a surface of the mating split core facing the resin containing portion are opposed to each other. stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30701498A JP3515912B2 (en) | 1998-10-28 | 1998-10-28 | Motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30701498A JP3515912B2 (en) | 1998-10-28 | 1998-10-28 | Motor stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000134832A JP2000134832A (en) | 2000-05-12 |
| JP3515912B2 true JP3515912B2 (en) | 2004-04-05 |
Family
ID=17963993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30701498A Expired - Lifetime JP3515912B2 (en) | 1998-10-28 | 1998-10-28 | Motor stator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3515912B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4965202B2 (en) * | 2006-09-08 | 2012-07-04 | 三菱電機株式会社 | Armature core and manufacturing method of the armature core |
| WO2011101986A1 (en) * | 2010-02-22 | 2011-08-25 | トヨタ自動車株式会社 | Stator and method for producing same |
| JP2013138589A (en) * | 2011-12-28 | 2013-07-11 | Toyota Motor Corp | Rotary electric machine stator core and rotary electric machine |
| KR101307029B1 (en) * | 2012-03-06 | 2013-09-11 | 한양대학교 에리카산학협력단 | Permanent magnet motor |
| JP6008781B2 (en) * | 2013-04-01 | 2016-10-19 | アスモ株式会社 | Rotating electrical machine laminated iron core |
| CN103746476A (en) * | 2013-12-20 | 2014-04-23 | 合肥凯邦电机有限公司 | External rotor three-phase motor |
| JP6497121B2 (en) * | 2014-07-23 | 2019-04-10 | 株式会社デンソー | Multi-rundel motor |
| US20160028277A1 (en) * | 2014-07-23 | 2016-01-28 | Asmo Co., Ltd. | Multi-lundell motor |
| JP6639105B2 (en) * | 2015-04-28 | 2020-02-05 | 株式会社イムラ材料開発研究所 | Superconducting rotating electric machine stator |
-
1998
- 1998-10-28 JP JP30701498A patent/JP3515912B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000134832A (en) | 2000-05-12 |
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