JP4169621B2 - Commutator motor stator - Google Patents

Commutator motor stator Download PDF

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Publication number
JP4169621B2
JP4169621B2 JP2003093007A JP2003093007A JP4169621B2 JP 4169621 B2 JP4169621 B2 JP 4169621B2 JP 2003093007 A JP2003093007 A JP 2003093007A JP 2003093007 A JP2003093007 A JP 2003093007A JP 4169621 B2 JP4169621 B2 JP 4169621B2
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JP
Japan
Prior art keywords
coil
stator core
end portion
stator
outer end
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 - Fee Related
Application number
JP2003093007A
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Japanese (ja)
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JP2004304890A (en
Inventor
利夫 大谷
隆夫 樽谷
規明 木村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP2003093007A priority Critical patent/JP4169621B2/en
Publication of JP2004304890A publication Critical patent/JP2004304890A/en
Application granted granted Critical
Publication of JP4169621B2 publication Critical patent/JP4169621B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【0001】
【発明の属する技術分野】
本願発明は、整流子モータのステータコアに関し、特にステータコアの磁極に券回されるコイルを保持するためのコイル枠体に関するものである。
【0002】
【従来の技術】
従来、この種の整流子モータのステータとしては、例えば特許文献1に記載された構成が知られている。この特許文献には、ステータコアの両背向面にコイルを一定形状に保持するためのコイル枠体が取り付けられ、コイルがステータコアの磁極と枠体に形成された湾曲部とに巻回された整流子モータのステータ構成が示されている。
【0003】
ところで、特許文献1の構成において、コイルの巻回作業を自動機で加工しようすると、磁極がステータコアの内面に形成されているので、巻線ガイドとなるチャックを湾曲部の側面から挿入させる必要があるが、湾曲部の側面にはチャックを挿入するための穴がないため、コイルの巻回作業を自動機で加工できないという問題があった。
【0004】
この問題を解決するために、コイル枠体100を、図9に示すように湾曲部101の根元にステータコア105の内面と連通する切欠部102を形成し、該切欠部102からチャックを挿入して、コイル103の巻回作業を自動機で加工できるような構成がとられている。そして、切欠部102の両端には、コイル103とステータコア105との間で放電を防止すると共に、コイル102をスムーズに巻くための段部104が形成されている。
【0005】
しかしながら、上記構成では、段部104の外側端部104aがエッジとなっているので、コイル103を巻く際、図10に示すようにコイル103を外側端部104aで傷つけて皮膜が剥がれ、耐圧不良を引き起こすという問題があった。
【0006】
【特許文献1】
特開平3−226253号公報
【0007】
【発明が解決しようとする課題】
本願発明は、このような課題を解決するためになされたものであり、コイルの巻回加工において、コイルが傷つけられることを防止し、耐圧不良の発生を抑えることができる整流子モータのステータを提供することを目的とするものである。
【0008】
【課題を解決するための手段】
上記のような目的を達成するために、内面に磁極が形成されたステータコアと、前記磁極の外形に対応する湾曲部が形成され、前記ステータコアの両背向面に取り付けられるコイル枠体と、前記磁極及び前記湾曲部に巻回されたコイルとを備え、前記コイル枠体は、前記湾曲部の根元には前記ステータコアの内面と連通する切欠部、該切欠部の両端には前記コイルとステータコアとの間で放電を防止するように前記コイルを受ける為の段部が形成されると共に、前記段部の外側端部を円弧状に形成し、外側端部の位置を内側端部の位置よりも高くしたことを特徴とする。
【0009】
また、内面に磁極が形成されたステータコアと、前記磁極の外形に対応する湾曲部が形成され、前記ステータコアの両背向面に取り付けられるコイル枠体と、前記磁極及び前記湾曲部に巻回されたコイルとを備え、前記コイル枠体は、前記湾曲部の根元には前記ステータコアの内面と連通する切欠部、該切欠部の両端には前記コイルとステータコアとの間で放電を防止するように前記コイルを受ける為の段部が形成されると共に、前記段部の外側端部を円弧状に形成し、外側端部から内側端部に向かって漸次下方に傾斜させたことを特徴とする。
また、前記外側端部から前記内側端部に向かう傾斜角度を、前記段部の軸方向に対し、70〜85度にしたことが好ましい。
【0010】
【発明の実施の形態】
本願発明の実施例について、図面に基づき詳述する。
【0011】
図1は、本願発明の実施例に係る整流子モータのステータの正面図、図2は、同ステータの側面図、図3は、同ステータコアの正面図、図4は、同ステータに装着されるコイル枠体の正面図、図5は、同コイル枠体の側面図、図6は同ステータの要部拡大図、図7は同ステータの要部拡大図である。
【0012】
1は、複数枚の鉄心板を積層してVICSかしめで固定して形成されたステータコアで、該ステータコア1の内面には後述する湾曲部5と共にコイル2が巻回される一対の磁極3が突出形成されている。
【0013】
4は、前記ステータコア1のそれぞれの背向面1a、1bに取り付けられるコイル枠体で、該コイル枠体4は、4個の辺4a、辺4b、辺4c、辺4dを有し、図4に示すように前記ステータコア1の外形に対応してほぼ四角形状をしている。そして前記辺4a、辺4cには2つの爪4eがそれぞれ形成され、該爪4eを前記ステータコア1の外側に係合することにより、前記コイル枠体4を前記ステータコア1に取り付けできるようになっている。
【0014】
5は、前記磁極3の外形に対応し、前記ステータコア1の辺4a、辺4cから外側に向かって延びる凸曲面状の湾曲部で、該湾曲部5の上方には、前記コイル2の巻回加工時に前記コイル2が前記コイル枠体4の枠外へ飛び出すことを防止する位置決めリブ6が形成されている。
【0015】
7は、前記コイル2の巻き始めの端部2aと巻き終わり端部2bを離脱可能に保持する保持部である。
【0016】
8は、前記湾曲部5の根本に形成された切欠部で、前記コイル枠体4が前記ステータコア1に取り付けられた時、前記切欠部8は、前記ステータコア1の内面と連通するようになっている。
【0017】
9は、前記切欠部8の両端に突出して形成された段部で、該段部9は、外側端部9aに円弧状のR付けが行われると共に、内側端部9bに向かって漸次下方に傾斜する傾斜面9cが形成され、前記外側端部9aに形成された円弧状の終端位置が前記内側端部9bの位置よりも高くなるように形成されている。そして、前記傾斜面9cの角度は、図7に示すようように、前記段部8の軸方向Aに対し、70〜85度になるように形成されている。
【0018】
上記構成によって、前記コイル2のガイドとなるチャックを前記切欠部8から前記ステータコア1の内面に向かって挿入し、前記コイル2を自動の巻回機等にて前記磁極3と前記湾曲部5とに巻回することができる。この時、前記コイル2は前記段部9を支点として巻回されるが、図6に示すように前記外側端部9aが円弧状になっているため、前記コイル2に傷が付きにくくなり、更に、前記外側端部9aに形成された円弧状の終端位置を前記内側端部9bの位置よりも高くしているので、前記コイル2が前記内側端部9bに当接することがないため、前記内側端部9bで前記コイル2を傷つけることもない。従って、前記コイル2の巻回作業において、前記段部9で前記コイル2が傷付けられることを防止し、前記コイル2の皮膜剥がれによる耐圧不良の発生を抑制することができる。
【0019】
また、前記傾斜面9cの角度は、前記段部9の軸方向Aに対し、70〜85度になるよう設定されているので、前記段部9の部分の金型パート面が鋭角とならないので、金型強度が低下することもなく、また前記内側端部9bに前記コイル枠体4の成形時におけるバリが発生しても、前記傾斜面9cによって前記内側端部9bから前記コイル2までの距離が十分確保されており、バリが前記コイル2に当接することがないため、バリで前記コイル2の被膜を剥がすこともない。
【0020】
本実施例では、前記段部9に傾斜面9cを形成したが、図8に示すように前記外側端部9aに円弧状のR付けを行い、前記外側端部9aから前記内側端部9bにかけて平面の形状であっても、上記同様の効果を有することができる。
【0021】
【発明の効果】
本発明の請求項1によると、段部の外側端部を円弧状に形成し、外側端部の位置を内側端部の位置よりも高くしたので、コイルの巻回作業の際、前記外側端部で前記コイルを傷付きることを防止できると共に、前記コイルが前記内側端部に当接することもないので、前記内側端部でも前記コイルを傷つけることを防止することができ、前記コイルの皮膜剥がれによる耐圧不良の発生を抑制することができる等の効果を奏する。
【0022】
本発明の請求項2によると、段部の外側端部を円弧状に形成し、外側端部から内側端部に向かって漸次下方に傾斜させたので、コイルの巻回作業の際、前記外側端部で前記コイルを傷付きることを防止できると共に、前記コイルが前記内側端部に当接することもないので、前記内側端部でも前記コイルを傷つけることを防止することができ、前記コイルの皮膜剥がれによる耐圧不良の発生を抑制することができる。また、前記内側端部に前記コイル枠体の成形時におけるバリが発生しても、前記傾斜面によって前記内側端部から前記コイルまでの距離を十分に確保することができ、バリによって前記コイルの被膜を剥がすこともなくなり、前記コイルの耐圧不良の発生を確実に抑制することができる等の効果を奏する
本発明の請求項3によると、前記外側端部から前記内側端部に向かう傾斜角度を、前記段部の軸方向に対し、70〜85度にしたので、前記段部の部分の金型パート面が鋭角とならないので、金型強度が低下することを防止することができる等の効果を奏する。
【図面の簡単な説明】
【図1】本願発明の実施例に係る整流子モータのステータの正面図である。
【図2】同ステータの側面図である。
【図3】同ステータコアの正面図である。
【図4】同ステータに装着されるコイル枠体の正面図である。
【図5】同コイル枠体の側面図である。
【図6】同ステータの要部拡大図である。
【図7】同ステータの要部拡大図である。
【図8】他のコイル枠体の要部拡大図である。
【図9】従来のコイル枠体の側面図である。
【図10】同要部の拡大図である。
【符号の説明】
3 磁極
1 ステータコア
5 湾曲部
4 コイル枠体
2 コイル
8 切欠部
9 段部
9a 外側端部
9b 内側端部
9c 傾斜面
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stator core of a commutator motor, and more particularly to a coil frame for holding a coil wound around a magnetic pole of a stator core.
[0002]
[Prior art]
Conventionally, for example, a configuration described in Patent Document 1 is known as a stator of this type of commutator motor. In this patent document, a coil frame for holding a coil in a fixed shape is attached to both back surfaces of a stator core, and the coil is wound around a magnetic pole of the stator core and a curved portion formed in the frame. The stator configuration of the slave motor is shown.
[0003]
By the way, in the structure of patent document 1, when it is going to process a coil winding operation | work with an automatic machine, since the magnetic pole is formed in the inner surface of a stator core, it is necessary to insert the chuck | zipper used as a winding guide from the side surface of a curved part. However, since there is no hole for inserting the chuck on the side surface of the bending portion, there is a problem that the coil winding operation cannot be processed by an automatic machine.
[0004]
In order to solve this problem, the coil frame 100 is formed with a notch 102 communicating with the inner surface of the stator core 105 at the base of the bending portion 101 as shown in FIG. The configuration is such that the winding operation of the coil 103 can be processed by an automatic machine. At both ends of the notch portion 102, step portions 104 are formed for preventing the discharge between the coil 103 and the stator core 105 and smoothly winding the coil 102.
[0005]
However, in the above configuration, since the outer end 104a of the step 104 is an edge, when the coil 103 is wound, the coil 103 is damaged at the outer end 104a as shown in FIG. There was a problem of causing.
[0006]
[Patent Document 1]
JP-A-3-226253
[Problems to be solved by the invention]
The present invention has been made to solve such a problem. A stator of a commutator motor that can prevent a coil from being damaged and suppress the occurrence of defective withstand voltage in coil winding processing. It is intended to provide.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a stator core having a magnetic pole formed on the inner surface thereof, a curved portion corresponding to the outer shape of the magnetic pole, and a coil frame attached to both back surfaces of the stator core; A coil wound around the curved portion, and the coil frame has a cutout portion communicating with the inner surface of the stator core at the base of the curved portion, and the coil and the stator core at both ends of the cutout portion. A step portion for receiving the coil is formed so as to prevent discharge between the outer end portion, the outer end portion of the step portion is formed in an arc shape, and the position of the outer end portion is more than the position of the inner end portion. It is characterized by being raised.
[0009]
Further, a stator core having a magnetic pole formed on the inner surface, a curved portion corresponding to the outer shape of the magnetic pole, a coil frame attached to both back surfaces of the stator core, and wound around the magnetic pole and the curved portion. The coil frame body has a cutout portion communicating with the inner surface of the stator core at the base of the bending portion, and discharge between the coil and the stator core at both ends of the cutout portion. A step portion for receiving the coil is formed, an outer end portion of the step portion is formed in an arc shape, and is gradually inclined downward from the outer end portion toward the inner end portion.
In addition, it is preferable that an inclination angle from the outer end portion toward the inner end portion is set to 70 to 85 degrees with respect to the axial direction of the stepped portion.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described in detail with reference to the drawings.
[0011]
1 is a front view of a stator of a commutator motor according to an embodiment of the present invention, FIG. 2 is a side view of the stator, FIG. 3 is a front view of the stator core, and FIG. 4 is attached to the stator. FIG. 5 is a side view of the coil frame, FIG. 6 is an enlarged view of the main part of the stator, and FIG. 7 is an enlarged view of the main part of the stator.
[0012]
Reference numeral 1 denotes a stator core formed by laminating a plurality of iron core plates and fixing them by VICS caulking. A pair of magnetic poles 3 around which a coil 2 is wound together with a curved portion 5 to be described later project on the inner surface of the stator core 1. Is formed.
[0013]
Reference numeral 4 denotes a coil frame attached to the respective back-facing surfaces 1a and 1b of the stator core 1, and the coil frame 4 has four sides 4a, 4b, 4c and 4d. As shown in FIG. 2, the stator core 1 has a substantially square shape corresponding to the outer shape of the stator core 1. The sides 4a and 4c are formed with two claws 4e, respectively, and the coil frame 4 can be attached to the stator core 1 by engaging the claws 4e with the outside of the stator core 1. Yes.
[0014]
Reference numeral 5 denotes a convex curved portion that corresponds to the outer shape of the magnetic pole 3 and extends outward from the sides 4a and 4c of the stator core 1. Above the curved portion 5, the winding of the coil 2 is provided. Positioning ribs 6 for preventing the coil 2 from jumping out of the frame of the coil frame 4 during processing are formed.
[0015]
Reference numeral 7 denotes a holding portion that detachably holds the winding start end portion 2a and the winding end end portion 2b of the coil 2.
[0016]
Reference numeral 8 denotes a notch formed at the base of the bending portion 5. When the coil frame 4 is attached to the stator core 1, the notch 8 communicates with the inner surface of the stator core 1. Yes.
[0017]
9 is a stepped portion formed at both ends of the cutout portion 8, and the stepped portion 9 is provided with an arc-shaped rounded end portion 9a and gradually downward toward the inner end portion 9b. An inclined surface 9c that is inclined is formed, and an arcuate end position formed at the outer end 9a is formed higher than the position of the inner end 9b. As shown in FIG. 7, the angle of the inclined surface 9 c is formed to be 70 to 85 degrees with respect to the axial direction A of the step portion 8.
[0018]
With the above configuration, a chuck that serves as a guide for the coil 2 is inserted from the notch 8 toward the inner surface of the stator core 1, and the coil 2 is inserted into the magnetic pole 3 and the bending portion 5 with an automatic winding machine or the like. Can be wound on. At this time, the coil 2 is wound with the step portion 9 as a fulcrum, but the outer end portion 9a has an arc shape as shown in FIG. Furthermore, since the arcuate end position formed on the outer end 9a is higher than the position of the inner end 9b, the coil 2 does not contact the inner end 9b. The coil 2 is not damaged at the inner end 9b. Therefore, in the winding operation of the coil 2, it is possible to prevent the coil 2 from being damaged at the stepped portion 9, and to suppress the occurrence of a breakdown voltage failure due to the film peeling of the coil 2.
[0019]
Moreover, since the angle of the inclined surface 9c is set to be 70 to 85 degrees with respect to the axial direction A of the step portion 9, the mold part surface of the step portion 9 does not become an acute angle. Even if the mold strength does not decrease and burrs are generated at the time of molding the coil frame body 4 in the inner end portion 9b, the inclined surface 9c leads the inner end portion 9b to the coil 2. Since the distance is sufficiently secured and the burr does not come into contact with the coil 2, the film of the coil 2 is not peeled off by the burr.
[0020]
In the present embodiment, the inclined surface 9c is formed on the step portion 9, but as shown in FIG. 8, the outer end portion 9a is arc-shaped and attached to the inner end portion 9b from the outer end portion 9a. Even a planar shape can have the same effects as described above.
[0021]
【The invention's effect】
According to the first aspect of the present invention, the outer end portion of the step portion is formed in an arc shape and the position of the outer end portion is higher than the position of the inner end portion. The coil can be prevented from being damaged at the portion, and the coil is not abutted against the inner end portion, so that the coil can be prevented from being damaged even at the inner end portion. There are effects such as suppression of the occurrence of defective pressure resistance due to peeling.
[0022]
According to the second aspect of the present invention, the outer end portion of the step portion is formed in an arc shape and is gradually inclined downward from the outer end portion toward the inner end portion. The coil can be prevented from being damaged at the end, and the coil does not come into contact with the inner end, so that the coil can also be prevented from being damaged at the inner end. Occurrence of a breakdown voltage failure due to film peeling can be suppressed. In addition, even if burrs are generated at the time of molding the coil frame body at the inner end portion, a sufficient distance from the inner end portion to the coil can be secured by the inclined surface. According to the third aspect of the present invention, in which the coating film is not peeled off and the occurrence of a breakdown voltage failure of the coil can be reliably suppressed, the inclination angle from the outer end portion toward the inner end portion is set. Since the angle of the stepped portion is set to 70 to 85 degrees, the mold part surface of the stepped portion does not become an acute angle. Play.
[Brief description of the drawings]
FIG. 1 is a front view of a stator of a commutator motor according to an embodiment of the present invention.
FIG. 2 is a side view of the stator.
FIG. 3 is a front view of the stator core.
FIG. 4 is a front view of a coil frame attached to the stator.
FIG. 5 is a side view of the coil frame.
FIG. 6 is an enlarged view of a main part of the stator.
FIG. 7 is an enlarged view of a main part of the stator.
FIG. 8 is an enlarged view of a main part of another coil frame.
FIG. 9 is a side view of a conventional coil frame.
FIG. 10 is an enlarged view of the main part.
[Explanation of symbols]
3 Magnetic pole 1 Stator core 5 Bending part 4 Coil frame 2 Coil 8 Notch part 9 Step part 9a Outer end part 9b Inner end part 9c Inclined surface

Claims (3)

内面に磁極が形成されたステータコアと、前記磁極の外形に対応する湾曲部が形成され、前記ステータコアの両背向面に取り付けられるコイル枠体と、前記磁極及び前記湾曲部に巻回されたコイルとを備え、前記コイル枠体は、前記湾曲部の根元には前記ステータコアの内面と連通する切欠部、該切欠部の両端には前記コイルとステータコアとの間で放電を防止するように前記コイルを受ける為の段部が形成されると共に、前記段部の外側端部を円弧状に形成し、外側端部の位置を内側端部の位置よりも高くしたことを特徴とする整流子モータのステータ。A stator core having magnetic poles formed on the inner surface, a coil frame formed with curved portions corresponding to the outer shape of the magnetic poles and attached to both back surfaces of the stator core, and a coil wound around the magnetic poles and the curved portion The coil frame body has a cutout portion communicating with the inner surface of the stator core at the base of the curved portion, and the coil so as to prevent discharge between the coil and the stator core at both ends of the cutout portion. A step portion for receiving the step, an outer end portion of the step portion is formed in an arc shape, and a position of the outer end portion is made higher than a position of the inner end portion. Stator. 内面に磁極が形成されたステータコアと、前記磁極の外形に対応する湾曲部が形成され、前記ステータコアの両背向面に取り付けられるコイル枠体と、前記磁極及び前記湾曲部に巻回されたコイルとを備え、前記コイル枠体は、前記湾曲部の根元には前記ステータコアの内面と連通する切欠部、該切欠部の両端には前記コイルとステータコアとの間で放電を防止するように前記コイルを受ける為の段部が形成されると共に、前記段部の外側端部を円弧状に形成し、外側端部から内側端部に向かって漸次下方に傾斜させたことを特徴とする整流子モータのステータ。A stator core having magnetic poles formed on the inner surface, a coil frame formed with curved portions corresponding to the outer shape of the magnetic poles and attached to both back surfaces of the stator core, and a coil wound around the magnetic poles and the curved portion The coil frame body has a cutout portion communicating with the inner surface of the stator core at the base of the curved portion, and the coil so as to prevent discharge between the coil and the stator core at both ends of the cutout portion. A commutator motor, wherein a stepped portion for receiving the step is formed, an outer end portion of the stepped portion is formed in an arc shape, and is gradually inclined downward from the outer end portion toward the inner end portion. Stator. 前記外側端部から前記内側端部に向かう傾斜角度を、前記段部の軸方向に対し、70〜85度にしたことを特徴とする請求項2記載の整流子モータのステータ。The stator of the commutator motor according to claim 2, wherein an inclination angle from the outer end portion toward the inner end portion is set to 70 to 85 degrees with respect to an axial direction of the stepped portion.
JP2003093007A 2003-03-31 2003-03-31 Commutator motor stator Expired - Fee Related JP4169621B2 (en)

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