JPH02303339A - Electric motor - Google Patents

Abstract

PURPOSE:To prevent the movement of a stator in the circumferential direction inside the outer case of the stator by forming the inside surface of the outer case in which the stator is put to have a cross section of a polygon having corners, the number of which is the same as that of magnetic pole sections, and, at the same time, making surfaces of the magnetic pole end section which abuts on the inner surface of the outer case straight. CONSTITUTION:After a rotor 16 is inserted, a stator 10 constituted of coils 17 wound between magnetic poles sections 12 is put in a bracket 21 with pressure so that the end section 14 of each magnetic pole section 12 can abut on each inside surface of the bracket 21. Then a frame 20 is joined to the bracket 21 so as to cover the stator 10 from the top, and thus, this electric motor 19 is formed. When the end sections 14 of the magnetic pole sections 12 of the stator 10 are mede straight and, at the same time, the inside surface of an outer case 18 is made to have a cross section of a polygon having corners, the number of which is the same as that of the magnetic pole sections 12, the end sections 14 can surely abut on the inside surface of the outer housing 18. Therefore, the movement of the stator 10 in the circumferential direction inside the outer case 18 can is eliminated.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、外筺内における固定子の回り止めをなす電
動機に間するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electric motor that prevents a stator from rotating within an outer casing.

〔従来の技術〕[Conventional technology]

第５図は例えば実開昭５７−１６５０４９号公報に示さ
れた従来の電動機を示す図であり、図において（１）は
電動１（２）の外筺で、内径が円形状からなる。FIG. 5 is a diagram showing a conventional electric motor disclosed in, for example, Japanese Utility Model Application Publication No. 57-165049. In the figure, (1) is the outer casing of the electric motor 1 (2), which has a circular inner diameter.

（３）はこの外筺内に内接された固定子で、外周にスロ
ット（２）を形成して複数の磁極部（５１を設け、この
磁極部（５１端部は上記外筺（１）内壁と重合するよう
円弧状に形成されている。（６）は巻枠（７）に巻回さ
れたコ、イルで、上記１ｉｆｉ極部（５）に挿入されて
いる。Ｃ）はこのコイルに接続されたリード線である。(3) is a stator inscribed in this outer casing, with slots (2) formed on the outer periphery and a plurality of magnetic pole parts (51). It is formed in an arc shape so as to overlap with the inner wall. (6) is a coil wound around the winding frame (7), which is inserted into the above-mentioned 1ifi pole part (5).C) is this coil. This is the lead wire connected to.

従来の電動機は上記のように構成され、コイル（６）が
巻回された巻枠（７）が固定子（３）の各磁極部（９に
装着された後、磁極部＋５１の端部を外筺（１）内壁に
当接させるようにして固定子（３）が外筺（１）内に圧
入される。The conventional electric motor is constructed as described above, and after the winding frame (7) around which the coil (6) is wound is attached to each magnetic pole part (9) of the stator (3), the end of the magnetic pole part +51 is The stator (3) is press-fitted into the outer casing (1) so as to come into contact with the inner wall of the outer casing (1).

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上記のような従来の電動機では、内径が円形状からなる
外筺（１）内に固定子（３）の磁極部（５１端部を当接
させ固定子（３１を外筺（１）に内設しているが、外筺
（１）内径および磁極部［５］端部が円弧状であること
より固定子Ｂ）が円周方向に移動するという課題があっ
た。In the conventional electric motor as described above, the magnetic pole part (51 end) of the stator (3) is brought into contact with the outer casing (1) having a circular inner diameter, and the stator (31) is inserted into the outer casing (1). However, since the inner diameter of the outer casing (1) and the end of the magnetic pole part [5] are arcuate, there is a problem that the stator B) moves in the circumferential direction.

この発明は係る課題を解決するためになされたもので、
固定子が外筺内にて円周方向に移動することのない電動
機を得ることを目的とする。This invention was made to solve the problem,
An object of the present invention is to obtain an electric motor in which a stator does not move in the circumferential direction within an outer casing.

〔課題を解決するための手段〕[Means to solve the problem]

上記目的を達成するために、この発明の電動機において
は外周にスロットを形成して突設された複数の磁極部を
有する固定子と、この固定学内に回転子を挿入し上記磁
極部間に巻回されたコイルと、上記固定子の磁極部端部
が当接されることより固定子が内設される外筺とを備え
、上記外筺の内径を上記磁極部と同数からなる多角形に
するとともに、磁極部端部の当接面をストレートにした
ものである。In order to achieve the above object, the electric motor of the present invention includes a stator having a plurality of protruding magnetic pole parts formed by forming slots on the outer periphery, and a rotor inserted into the stator and wound between the magnetic pole parts. The inner diameter of the outer casing is shaped into a polygon having the same number of magnetic poles as the magnetic poles. At the same time, the contact surface of the end of the magnetic pole part is made straight.

また、外筺内壁に固定子の磁極部が嵌合される凹部を設
けたものである。Furthermore, a recess into which the magnetic pole part of the stator is fitted is provided on the inner wall of the outer casing.

〔作用〕[Effect]

この発明においては、外筺内径を磁極部と同数からなる
多角形にするとともに、磁極部端部の当接面をストレー
トにしたことより、磁極部がそれぞれにおいて外筺内壁
と当接される。In this invention, the inner diameter of the outer casing is made into a polygon with the same number as the magnetic pole parts, and the abutment surfaces of the ends of the magnetic pole parts are made straight, so that the magnetic pole parts are in contact with the inner wall of the outer casing, respectively.

また、外筺内壁に固定子の磁極部が嵌合される四部を設
けたことより、磁極部が凹部に嵌合される。Further, since the inner wall of the outer casing has four parts into which the magnetic pole parts of the stator are fitted, the magnetic pole parts are fitted into the recesses.

〔実施例〕〔Example〕

第１図はこの発明の一実施例を示す斜視図、第２図は同
じく断面図であり、図において０〔は固定子で、外周に
スロット（１１）を形成して複数の磁極部（１２）を形
成している。　（１３）はこの固定子の磁極部に設けら
れたボールで１例えば絶縁樹脂により固定子Ｏｌに一体
形成されている。　（１４）は上記磁極部（１２）の磁
極部端部で、後述される外筺内壁との当接面（１５）は
ストレートに形成されている。（１６）は上記固定子α
ｅ内に挿通された回転子、（１７）はこの回転子が上記
固定子ａ〔内に挿通されたのち、上記磁極部（１２）間
に巻回されるコイル、（１８）は上記固定子０ＩＩＩが
嵌入され電動機（１９）を形成する外筺で、フレーム（
２０）、ブラケット（２１）からなり、いずれも内径が
上記固定子０ωの磁極部（１２）と同数からなる多角形
に形成されている。FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a sectional view. ) is formed. Reference numeral (13) denotes a ball provided at the magnetic pole portion of the stator, and is formed integrally with the stator Ol by, for example, an insulating resin. (14) is an end of the magnetic pole part (12), and a contact surface (15) with the inner wall of the outer casing, which will be described later, is formed straight. (16) is the stator α
The rotor is inserted into the stator e, (17) is a coil that is wound between the magnetic pole parts (12) after the rotor is inserted into the stator a, and (18) is the stator. 0III is fitted into the outer casing forming the electric motor (19).
20) and a bracket (21), both of which are formed into a polygonal shape with an inner diameter equal to the number of magnetic pole parts (12) of the stator 0ω.

上記のように構成された電動機において、その組み立て
は回転子（１６）が挿通され、コイル（１７）が磁極部
（１２）間に巻回された固定子α〔をブラケット（２１
）内へ各磁極部端部（１４）をその各内壁に当接させる
ようにして圧入により嵌入する０次にフレーム（２０）
を上方より固定子α〔を覆うようにしてブラケット（２
１）に接合させて、電動機（１９）が形成される。この
ように、固定子０〔の磁極部端部（１４）をストレート
にするとともに、外筺（１８）の内径を磁極部（１２）
と同数の多角形にしたことにより、磁極部端部（１４）
が外筺（１８）内壁に確実に当接され固定子００１の円
周方向への動きがなくなる。In the electric motor configured as described above, the assembly involves inserting the stator α into which the rotor (16) is inserted and the coil (17) being wound between the magnetic pole parts (12) and the bracket (2
) into which each magnetic pole end (14) is pressed into contact with each inner wall of the zero-order frame (20).
from above to cover the stator α [bracket (2)
1), an electric motor (19) is formed. In this way, the magnetic pole end (14) of stator 0 is made straight, and the inner diameter of the outer casing (18) is adjusted to the magnetic pole part (12).
By making the same number of polygons, the magnetic pole end (14)
is securely abutted against the inner wall of the outer casing (18), and movement of the stator 001 in the circumferential direction is eliminated.

なお、この発明では外筺（１８）の内壁を磁極部（１２
）と同数の多角形にしたが、第３図および第４図に示す
ように、外筺（１８）であるフレーム（２０）、ブラケ
ット（２１）内壁に上記磁極部が嵌合される凹部（２２
）を設けても上記実施例と同様の効果が得られる。In addition, in this invention, the inner wall of the outer casing (18) is connected to the magnetic pole part (12).
), but as shown in FIGS. 3 and 4, the frame (20), which is the outer casing (18), and the inner wall of the bracket (21) have recesses ( 22
), the same effect as in the above embodiment can be obtained.

〔発明の効果〕〔Effect of the invention〕

この発明は、上述のとおり構成されているので、次に記
載する効果を奏する。Since the present invention is configured as described above, it produces the effects described below.

外周にスロットを形成して突設された複数の磁極部を有
する固定子と、この固定子内に回転子を挿入し上記磁極
部間に巻回されたコイルと、上記固定子の磁極部端部が
当接されることより固定子が内設される外筺とを備え、
上記外筺の内径を上記磁極部と同数からなる多角形にす
るとともに、磁極部端部の当接面をストレートにしたこ
とにより、外筺内壁と磁極部端部とが確実に当接され、
固定子の外筺内での移動阻止ができる。A stator having a plurality of protruding magnetic pole parts with slots formed on the outer periphery, a rotor inserted into the stator and a coil wound between the magnetic pole parts, and an end of the magnetic pole part of the stator. and an outer casing in which the stator is disposed by abutting the outer casing,
By making the inner diameter of the outer casing a polygon with the same number as the magnetic pole parts, and by making the abutment surface of the magnetic pole part end straight, the inner wall of the outer casing and the magnetic pole part end are reliably abutted,
It is possible to prevent the stator from moving within the outer casing.

また、外筺内壁に固定子の磁極部が嵌合される凹部を設
けたことにより、固定子の外筺内での移動阻止がより確
実にできる。Furthermore, by providing the recessed portion in the inner wall of the outer casing into which the magnetic pole portion of the stator is fitted, movement of the stator within the outer casing can be more reliably prevented.

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの発明の一実施例を示す斜視図、第２図は同
じく断面図、第３図はこの発明の他の実施例を示す斜視
図、第４図は同じくこの発明の他の実施例を示す断面図
、第５図は従来の電動機を示す断面図である。 なお、０αは固定子、（１１）はスロット、（１２）は
磁極部、（１６）は回転子、〈１７）はコイル、（１８
）は外筺、（２２）は四部である。FIG. 1 is a perspective view showing one embodiment of the invention, FIG. 2 is a sectional view, FIG. 3 is a perspective view showing another embodiment of the invention, and FIG. 4 is a perspective view showing another embodiment of the invention. A sectional view showing an example, FIG. 5 is a sectional view showing a conventional electric motor. In addition, 0α is a stator, (11) is a slot, (12) is a magnetic pole part, (16) is a rotor, <17) is a coil, (18)
) is the outer casing, and (22) is the four parts.

Claims (2)

【特許請求の範囲】[Claims] （１）外周にスロットを形成して突設された複数の磁極
部を有する固定子と、この固定子内に回転子を挿入し上
記磁極部間に巻回されたコイルと、上記固定子の磁極部
端部が当接されることより固定子が内設される外筺とを
備え、上記外筺の内径を上記磁極部と同数からなる多角
形にするとともに、磁極部端部の当接面をストレートに
したことを特徴とする電動機。(1) A stator having a plurality of protruding magnetic pole parts with slots formed on the outer periphery, a rotor inserted into the stator and a coil wound between the magnetic pole parts, and a stator of the stator. an outer casing in which the stator is disposed by abutting the ends of the magnetic pole parts; the inner diameter of the outer casing is made into a polygon with the same number as the number of the magnetic pole parts; An electric motor characterized by a straight surface. （２）外筺内壁に固定子の磁極部が嵌合される凹部を設
けたことを特徴とする特許請求の範囲第１項記載の電動
機。(2) The electric motor according to claim 1, wherein the inner wall of the outer casing is provided with a recess into which the magnetic pole portion of the stator is fitted.