JPH0357094Y2 - - Google Patents
Info
- Publication number
- JPH0357094Y2 JPH0357094Y2 JP13798386U JP13798386U JPH0357094Y2 JP H0357094 Y2 JPH0357094 Y2 JP H0357094Y2 JP 13798386 U JP13798386 U JP 13798386U JP 13798386 U JP13798386 U JP 13798386U JP H0357094 Y2 JPH0357094 Y2 JP H0357094Y2
- Authority
- JP
- Japan
- Prior art keywords
- stator
- magnetic shielding
- shielding member
- molded
- small electric
- 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
Links
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
Description
【考案の詳細な説明】
(1) 考案の目的
（産業上の利用分野）
本考案は、樹脂成形による小形電動機に磁気遮
蔽効果を附与する構造に関わるものである。[Detailed Description of the Invention] (1) Purpose of the Invention (Field of Industrial Application) The present invention relates to a structure that imparts a magnetic shielding effect to a small electric motor made of resin molding.
（従来技術）
第４図により従来技術の内容、構成を説明す
る。(Prior Art) The content and configuration of the prior art will be explained with reference to FIG.
第４図は、従来技術に成る電子計算機の記憶装
置に使用される磁気デスク駆動装置の制御装置等
に多く使用される磁気遮蔽効果をもつ小形電動機
の例の正面図ａと断面図ｂである。 FIG. 4 is a front view a and a cross-sectional view b of an example of a small electric motor having a magnetic shielding effect, which is often used in a control device of a magnetic desk drive device used in a storage device of an electronic computer, which is a prior art. .
該例は固定子１が前部エンドブラケツト１０と
後部エンドブラケツト１１で挟持され、その内周
に小空隙を介して回転子２が前記エンドブラケツ
トに設けられた軸受７，７により回転自在に支承
され、かつ前記エンドブラケツト１０，１１は磁
性材料で構成され、固定子巻線や回転子に装着さ
れた永久磁石（図示していない）等からの漏れ磁
束が、外部へ洩れない様に構成されている。 In this example, a stator 1 is held between a front end bracket 10 and a rear end bracket 11, and a rotor 2 is rotatably supported on the inner periphery of the stator 1 through a small gap by bearings 7 provided on the end brackets. The end brackets 10 and 11 are made of a magnetic material, and are configured to prevent leakage magnetic flux from permanent magnets (not shown) attached to the stator windings and rotor from leaking to the outside. ing.
（特開昭57−55762号参照）
（考案が解決しようとする問題点）
本考案は、前記の第４図に示す従来技術による
磁気遮蔽効果をもつ小形電動機は、そのエンドブ
ラケツト全体が磁性材料で構成されているので、
磁気遮蔽の性能は優れているが、エンドブラケツ
トの加工や組み立てに多くの工数を必要とし製造
コストが高いという問題があつた。(Refer to Japanese Patent Application Laid-Open No. 57-55762.) (Problems to be Solved by the Invention) The present invention proposes that the small electric motor having the magnetic shielding effect according to the prior art shown in FIG. Since it is composed of
Although the magnetic shielding performance is excellent, there is a problem in that the processing and assembly of the end bracket requires a large number of man-hours and the manufacturing cost is high.
(2) 考案の構成
（問題点を解決する為の手段）
本考案の小形電動機は、固定子鉄芯と該固定子
鉄芯に巻装した固定子巻線を包み込み導電部を絶
縁すると共に軸受箱を一体的に樹脂で成形してエ
ンドブラケツト部を構成すると共に、前記エンド
ブラケツト部の少なくとも一方の樹脂成形部に、
磁性薄板より成り、その外周縁の近傍に取付け用
構造を形成した複数の座部を備え、前記複数の座
部の間の外周縁を略直角に曲げて前記固定子鉄芯
の端面に近接、若しくは当接せしめ、一方その正
面部分の中心近傍は前記外周縁の曲げ方向と同じ
方向に中空円筒状に押出し成形して外筒部を形成
し、前記外筒部を内側に逆向きに戻し成形して内
筒部を形成し二重円筒状と成し、該内筒部の内周
面を一方の軸受箱とすると共に、前記内側に戻し
成形した内筒部の端面を回転子鉄芯に近接して形
成した磁気遮蔽部材を内蔵配設した構成が特徴で
ある。(2) Structure of the invention (Means for solving the problems) The small electric motor of the invention wraps the stator core and the stator windings wound around the stator core to insulate the conductive parts and protect the bearings. The end bracket is formed by integrally molding the box with resin, and at least one resin molded part of the end bracket is provided with:
comprising a plurality of seats formed of a magnetic thin plate and having a mounting structure formed near the outer periphery thereof, the outer periphery between the plurality of seats being bent at a substantially right angle to be close to the end face of the stator iron core; Alternatively, the central part of the front part is extruded into a hollow cylindrical shape in the same direction as the bending direction of the outer periphery to form an outer cylindrical part, and the outer cylindrical part is returned to the inside and molded in the opposite direction. The inner cylindrical part is formed into a double cylindrical shape, and the inner circumferential surface of the inner cylindrical part is used as one of the bearing boxes, and the end face of the inner cylindrical part that is molded back inside is used as the rotor core. The structure is characterized by a built-in magnetic shielding member formed close to each other.
（作 用）
前述の様な構成においては、固定子鉄芯と、該
固定子鉄芯に巻装した固定子巻線を包み込み導電
部を絶縁すると共に軸受箱を一体的に樹脂で成形
してエンドブラケツトを構成し、少なくとも前記
エンドブラケツトの一方に磁性材料の薄板で構成
し、その外周縁の近傍に取付け用構造を形成した
複数の座部を備え、前記座部の間の外周縁を略直
角に曲げた磁気遮蔽部材を内蔵配設して樹脂で一
体的に成形することにより、磁気遮蔽効果を備え
ると共に前記磁気遮蔽部材の外周縁に設けた複数
の座部に形成した取付け構造も一体的に構成した
固定子を一挙に形成でき、複数の効果を有する固
定子を短い工程で完成できる作用効果がある。(Function) In the above-mentioned configuration, the stator core and the stator winding wound around the stator core are wrapped to insulate the conductive parts, and the bearing box is integrally molded with resin. An end bracket is constituted, and at least one of the end brackets is provided with a plurality of seats made of a thin plate of magnetic material and having a mounting structure formed near the outer periphery thereof, and the outer periphery between the seats is approximately By incorporating a magnetic shielding member bent at right angles and integrally molding it with resin, it has a magnetic shielding effect, and the mounting structure formed on the plurality of seats provided on the outer periphery of the magnetic shielding member is also integrated. This method has the advantage of being able to form a stator with a unique structure all at once, and completing a stator with multiple effects in a short process.
（実施例） 以下図面によつて本考案の実施例を説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.
第１図は、本考案に成る小形電動機の例の正面
図ａと矢視断面図ｂで固定子鉄芯と該固定子鉄芯
に巻装した固定子巻線を包み込み、導電部を絶縁
すると共に軸受箱を一体的に樹脂で成形したエン
ドブラケツト部８を構成した固定子１の一方のエ
ンドブラケツト部８の樹脂内には第２図に示す磁
気遮蔽部材３を一体的に内蔵成形している。 Figure 1 shows a front view (a) and a cross-sectional view (b) of a small electric motor according to the present invention, in which a stator core and a stator winding wound around the stator core are wrapped to insulate the conductive parts. At the same time, a magnetic shielding member 3 shown in FIG. 2 is integrally molded inside the resin of one end bracket part 8 of the stator 1, which constitutes an end bracket part 8 in which the bearing box is integrally molded with resin. There is.
第２図に示す磁気遮蔽部材３は、磁性材料の薄
板で構成され、其の正面形状が固定子鉄芯の正面
形状と略同じで、その外周縁の四角近傍に電動機
の取付ネジ部４を形成した座部５を張り出し、該
座部５を除く外縁部の少なくも一部を略直角に曲
げ、その先端６を前記固定子鉄芯の端面に近接、
若しくは当接せしめる形状に形成し、一方その正
面部分の中心近傍は、前記外縁部と中空円筒状に
押し出し成形した外筒部３−２と、該外筒部の先
端を内側に逆向きに戻し成形して二重円筒状とし
軸受箱形成部３−１を形成してある。 The magnetic shielding member 3 shown in FIG. 2 is composed of a thin plate of magnetic material, and its front shape is approximately the same as the front shape of the stator core, and the motor mounting screw portion 4 is installed near the square of its outer periphery. The formed seat 5 is extended, at least a part of the outer edge excluding the seat 5 is bent at a substantially right angle, and the tip 6 is brought close to the end surface of the stator core,
Alternatively, it is formed into a shape that makes it abut, and on the other hand, near the center of the front part, there is an outer cylindrical part 3-2 extruded into a hollow cylindrical shape with the outer edge part, and the tip of the outer cylindrical part is returned inward in the opposite direction. It is molded into a double cylindrical shape to form a bearing box forming portion 3-1.
第２図に示した磁気遮蔽部材３の外縁部の先端
６を固定子巻線を巻装した固定子鉄芯の端面に近
接、若しくは当接し、エンドブラケツト部８の部
分を樹脂で一体的に成形すると、固定子鉄芯と、
固定子巻線と磁気遮蔽部材３と一方の軸受箱形成
部３−１とが一体となつた固定子が構成され、該
固定子の他のエンドブラケツト部８に形成された
中心孔に他方の軸受箱９を装着し、該軸受箱９と
前記の軸受箱形成部３−１とに夫々装着した軸受
７，７により前記固定子の内側に空隙を介して配
設した回転子２を回転自在に支承して電動機を構
成している。第１図に示した本考案の構成におい
ては固定子巻線或いは回転子に設けた永久磁石か
らの漏れ磁束は磁気遮蔽部材３の中心の円筒状形
成部３−１及び３−２より外縁部の先端部（鉄芯
当接部）６を介して鉄芯に至り、空隙を介して回
転子２に至る通路を還流しエンドブラケツト部８
より外部に漏れる磁束を効果的に減少させること
ができる。 The tip 6 of the outer edge of the magnetic shielding member 3 shown in FIG. When molded, the stator core and
A stator is constructed in which the stator winding, the magnetic shielding member 3, and one bearing box forming part 3-1 are integrated, and the other end bracket is inserted into the center hole formed in the other end bracket part 8 of the stator. A bearing box 9 is mounted, and the rotor 2 disposed inside the stator with a gap therebetween is rotatable by the bearings 7, 7 mounted on the bearing box 9 and the bearing box forming part 3-1, respectively. The electric motor is constructed by supporting the In the configuration of the present invention shown in FIG. 1, leakage magnetic flux from the permanent magnets provided in the stator winding or rotor is distributed from the central cylindrical portions 3-1 and 3-2 of the magnetic shielding member 3 to the outer edge. The end bracket part 8 reaches the iron core through the tip (iron core contact part) 6 and circulates through the passage leading to the rotor 2 through the gap.
The magnetic flux leaking to the outside can be more effectively reduced.
第１図の構成は第４図に示した従来技術におけ
る前後のエンドブラケツト１０，１１の構造部材
としての機能は、その一部を成形樹脂が代替し、
磁気遮蔽の機能は前記磁気遮蔽部材３が代替し、
磁気遮蔽部材３は更に取付部や軸受箱の機能を併
せ持つものである。第３図は当該磁気遮蔽部材３
の別の例で、その正面形状と外縁部の四角に設け
たネジ部４を備えた座部５の部分は第２図に示す
例と同じであるが軸受箱のは別途形成する構成と
し、中心部の円筒状形成部３−２を単に回転子２
の端面に近接させ漏洩磁束の通路としての機能だ
けを期待するものである。 In the configuration shown in FIG. 1, the function of the front and rear end brackets 10, 11 as structural members in the prior art shown in FIG. 4 is partially replaced by molded resin.
The magnetic shielding function is replaced by the magnetic shielding member 3,
The magnetic shielding member 3 also has the functions of a mounting portion and a bearing box. Figure 3 shows the magnetic shielding member 3.
In another example, the front shape and the part of the seat part 5 with the screw part 4 provided in the square on the outer edge are the same as the example shown in FIG. 2, but the bearing box is formed separately, The cylindrical forming part 3-2 in the center is simply connected to the rotor 2.
It is expected that it will function only as a path for leakage magnetic flux.
尚第２図ａに示す磁気遮蔽部材３の正面形状が
四角形となつているが他の形状でもよい。 Although the front shape of the magnetic shielding member 3 shown in FIG. 2a is square, other shapes may be used.
(3) 考案の効果
本考案の小形電動機は、上記の様な構成である
ので固定子鉄芯と、該固定子鉄芯に巻装した固定
子巻線を包み込み導電部を絶縁すると共に軸受箱
と、取付け用の構造を備えた座部を張り出した磁
気遮蔽部材を一体的に樹脂で成形してエンドブラ
ケツト部を構成したことにより、強固な取付け構
造を備え、かつ効果的な磁気遮蔽の効果を有する
小形電動機を、組み立て工程の著しい短縮により
安い生産コストで供給できる大きな効果がある。(3) Effects of the invention Since the small electric motor of the invention has the above-mentioned configuration, it wraps around the stator core and the stator winding wound around the stator core to insulate the conductive parts, and also has a bearing box. The end bracket is made by integrally molding a magnetic shielding member with a seat part with a mounting structure and an overhanging seat part, thereby providing a strong mounting structure and effective magnetic shielding effect. This has the great effect of making it possible to supply small electric motors with low production costs by significantly shortening the assembly process.
第１図は本考案に成る小形電動機の例の正面図
ａと断面図ｂ、第２図は該例の磁気遮蔽部材の正
面図ａと矢視断面図ｂ、第３図は同じく本考案の
磁気遮蔽部材の別の例の断面図、第４図は従来技
術に成る小形電動機の例の正面図ａと断面図ｂで
ある。
符号の説明、１……固定子、２……回転子、３
……磁気遮蔽部材、３−１……軸受箱形成部、３
−２……円筒状形成部、４……取付ネジ部、５…
…座部、６……外縁部の先端（鉄芯当接面）、７
……軸受、８……樹脂で成形したエンドブラケツ
ト部、９……軸受箱別部材、１０……前部エンド
ブラケツト、１１……後部エンドブラケツト。
FIG. 1 is a front view a and a sectional view b of a small electric motor according to the present invention, FIG. FIG. 4 is a cross-sectional view of another example of a magnetic shielding member, and FIG. 4 is a front view a and a cross-sectional view b of an example of a small electric motor according to the prior art. Explanation of symbols, 1...Stator, 2...Rotor, 3
... Magnetic shielding member, 3-1 ... Bearing box forming part, 3
-2...Cylindrical forming part, 4...Mounting screw part, 5...
...Seat part, 6...Tip of outer edge (iron core contact surface), 7
. . . Bearing, 8 . . . End bracket portion molded from resin, 9 .
Claims (1)
子巻線を包み込み導電部を絶縁すると共に軸受
箱を一体的に樹脂で成形してエンドブラケツト
部を構成した固定子と、前記固定子の内周に回
転子を前記軸受箱に装着した軸受で回転自在に
支承した小形電動機において、前記エンドブラ
ケツト部の少なくとも一方の樹脂成形部に、磁
性体薄板より成り、その外周の近傍に取り付け
用の構造を形成した複数の座部を備え、前記複
数の座部の間の外縁を略直角に曲げ、その先端
を前記固定子鉄芯の端面に近接、若しくは当接
し、その正面部分の中心近傍を前記外周縁の曲
げ方向と同じ方向に中空の円筒状に押出して外
筒部を形成し、前記外筒部を内側に逆向きに戻
し成形して内筒部を形成し二重円筒状と成し、
該内筒部の内周面を一方の軸受箱とすると共
に、前記内側に戻し成形した端面を回転子鉄芯
の端面に近接せしめ形成した磁気遮蔽部材を内
蔵配設した事、を特徴とする樹脂成形による小
形電動機。 (2) 前記磁気遮蔽部材の中心近傍の円筒状に押出
した外筒部の先端を、回転子鉄芯の端面に近接
せしめ形成した磁気遮蔽部材を内蔵配設した
事、を特徴とする実用新案登録請求の範囲第１
項に記載の小形電動機。[Scope of Claim for Utility Model Registration] (1) A stator core and a stator winding wound around the stator core to insulate the conductive parts, and a bearing box integrally molded with resin to form an end. In a small electric motor including a stator that constitutes a bracket portion, and a rotor rotatably supported on the inner periphery of the stator by a bearing mounted in the bearing box, a resin molded portion of at least one of the end bracket portions is coated with magnetic material. It is made of a thin body plate and has a plurality of seats with a mounting structure formed near its outer periphery, the outer edge between the plurality of seats is bent at a substantially right angle, and the tip thereof is attached to the end face of the stator core. The outer cylindrical part is formed by extruding the vicinity of the center of the front part into a hollow cylindrical shape in the same direction as the bending direction of the outer periphery, and the outer cylindrical part is returned inward and molded in the opposite direction. to form an inner cylindrical part to form a double cylindrical shape,
The inner circumferential surface of the inner cylindrical portion is used as one of the bearing boxes, and a magnetic shielding member is provided therein, the end surface of which is molded inside being brought close to the end surface of the rotor core. A small electric motor made of resin molding. (2) A utility model characterized in that a magnetic shielding member is disposed within the magnetic shielding member, with the tip of an extruded cylindrical outer tube near the center of the magnetic shielding member being brought close to the end face of the rotor core. Scope of registration claims 1st
Small electric motors listed in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13798386U JPH0357094Y2 (en) | 1986-09-10 | 1986-09-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13798386U JPH0357094Y2 (en) | 1986-09-10 | 1986-09-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6344651U JPS6344651U (en) | 1988-03-25 |
| JPH0357094Y2 true JPH0357094Y2 (en) | 1991-12-25 |
Family
ID=31042546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13798386U Expired JPH0357094Y2 (en) | 1986-09-10 | 1986-09-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0357094Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023068125A1 (en) * | 2021-10-20 | 2023-04-27 | 株式会社不二工機 | Electric valve |
-
1986
- 1986-09-10 JP JP13798386U patent/JPH0357094Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023068125A1 (en) * | 2021-10-20 | 2023-04-27 | 株式会社不二工機 | Electric valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6344651U (en) | 1988-03-25 |
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