【考案の詳細な説明】 ［産業上の利用分野］ 本考案はたとえば，永久磁石形ステッピングモータ等
の回転子側に積層鉄心を有する回転電機における回転子
の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement of a rotor in a rotating electric machine having a laminated core on the rotor side, such as a permanent magnet type stepping motor.
［従来の技術］ 従来の永久磁石形ステッピングモータは第２図に示す
ように構成されていた。[Prior Art] A conventional permanent magnet type stepping motor has been configured as shown in FIG.
同図において,1は固定子ハウジング,2は固定子鉄心
で，これは磁極２−１〜２−８を構成している。２−10
は各磁極の内周に形成された極歯である。３は固定子巻
線で，前記各磁極に３−１〜３−８で示すように巻かれ
ている。In the figure, 1 is a stator housing, 2 is a stator core, which constitutes the magnetic poles 2-1 to 2-8. 2-10
Are pole teeth formed on the inner periphery of each magnetic pole. Reference numeral 3 denotes a stator winding wound around the magnetic poles as indicated by 3-1 to 3-8.
これら固定子鉄心2,固定子巻線３で固定子Ｓが構成さ
れている。The stator S is composed of the stator core 2 and the stator winding 3.
4,4′はエンドブラケット,5,5′は玉軸受,6は回転子
軸,7,8は夫々回転子磁極,7−10と８−10は夫々上記回転
子磁極7,8の外周に形成された極歯,9は永久磁石で，こ
れら６〜９で回転子Ｒが構成される。4, 4 'are end brackets, 5, 5' are ball bearings, 6 is a rotor shaft, 7, 8 are rotor magnetic poles, 7-10 and 8-10 are outer circumferences of the rotor magnetic poles 7, 8 respectively. The pole teeth 9 formed are permanent magnets, and the rotor R is constituted by these 6 to 9.
なお，従来のものでは，回転子軸６は同図に示すよう
に回転子磁極7,8及び永久磁石９を装荷する回転子軸６
の部分は玉軸受5,5′で支承される部分6bよりも大径と
なる段部6aに形成されていた。In the prior art, the rotor shaft 6 is provided with rotor poles 7 and 8 and a permanent magnet 9 as shown in FIG.
Is formed in a step 6a having a larger diameter than the portion 6b supported by the ball bearings 5, 5 '.
［考案が解決しようとする課題］ 従来のものは，上記のように回転子軸６は段部6aを有
する構成であったから，各玉軸受5,5′を回転子軸６の
段部6aに対して各玉軸受5,5′の内輪部を突き当てるよ
うに圧入して装着していた。[Problem to be Solved by the Invention] In the related art, the rotor shaft 6 has the stepped portion 6a as described above, so that each ball bearing 5, 5 'is attached to the stepped portion 6a of the rotor shaft 6. On the other hand, the ball bearings 5, 5 'were press-fitted and mounted so as to abut the inner ring.
しかし，このような構成では，回転子軸に段部を形成
する必要上，製作工程が煩雑となるため製作コストが大
となるほか，鉄心として鋼板を積層して構成した回転磁
極と永久磁石の厚さ方向の寸法精度は，板厚及び玉軸受
5,5′間の間隔の寸法精度により，これら玉軸受5,5′に
加える与圧がばらつくため密着度のばらつきも生じ，こ
れらの誤差が累積されるため，回転電機として重要な性
能である位置決め精度も低下する等の問題点があった。However, in such a configuration, a step is formed on the rotor shaft, which complicates the manufacturing process and increases the manufacturing cost. In addition, the rotating magnetic pole formed by laminating steel plates as the iron core and the permanent magnet The dimensional accuracy in the thickness direction depends on the thickness and ball bearing.
Due to the dimensional accuracy of the gap between 5,5 ', the preload applied to these ball bearings 5,5' varies, causing variations in the degree of adhesion, and these errors are accumulated, which is an important performance for rotating electric machines. There were problems such as a decrease in positioning accuracy.
本考案は従来の上記課題（問題点）を解決するように
した回転電機の回転子を提供すること目的とするもので
ある。SUMMARY OF THE INVENTION An object of the present invention is to provide a rotor of a rotating electric machine which solves the above-mentioned conventional problems (problems).
［課題を解決するための手段］ 本考案の回転電機の回転子は，従来技術の課題を解決
するために、段部の無い同一径の回転子軸を採用した回
転子の両側に玉軸受を配置して回転子を支承するように
した回転電機において、外周に向かってテーパーのある
ソロバン玉の形状に形成した２個の間隔体と、接着剤を
注入することで形成される補助間隔体とを備え、上記各
間隔体の外側面は隣接する玉軸受の内輪端部とのみ接触
し、上記間隔体の内側面は、一方の間隔体は回転子の側
面に対接し、他方の間隔体は上記補助間隔体に対接する
ように配置するように構成した。[Means for Solving the Problems] In order to solve the problems of the prior art, the rotor of the rotating electric machine of the present invention has ball bearings on both sides of a rotor employing a rotor shaft having the same diameter without a step. In a rotating electric machine arranged to support a rotor, two spacing members formed in the shape of a solo-bang ball tapered toward the outer periphery, and an auxiliary spacing member formed by injecting an adhesive. The outer surface of each of the spacers is in contact only with the inner ring end of the adjacent ball bearing, the inner surface of the spacer is one of the spacers is in contact with the side surface of the rotor, and the other spacer is It was configured to be arranged so as to be in contact with the auxiliary spacing member.
［実施例］ 以下第１図に示す一実施例に基き本発明を具体的に説
明する。EXAMPLES The present invention will be specifically described below based on an example shown in FIG.
同図において従来のものと対応する構成については第
２図のものと同一の符号を付して示した。In the figure, components corresponding to those of the prior art are denoted by the same reference numerals as those of FIG.
本考案は同図に示すように，回転子軸10を段部を有し
ない単一径（ストレート軸）のものとし，玉軸受5,5′
の圧入を行う際の突き当て用の段部相当部として，回転
子軸10に対して間隔体11,11′と補助間隔体12とを設け
るようにしたものである。In the present invention, as shown in the figure, the rotor shaft 10 has a single diameter (straight shaft) having no step, and ball bearings 5, 5 '.
The spacers 11 and 11 'and the auxiliary spacers 12 are provided on the rotor shaft 10 as portions corresponding to the step portions for abutting when the press-fitting is performed.
この間隔体11,11′は図示のように，たとえば，樹脂
モールドの手段で外形をソロバン状となるように形成し
て回転子軸10に装着し，これら間隔体11,11′の一方
（実施例では間隔体11）と回転磁極８の間に形成される
隙間Ｓに対して接着材を流し込んで，回転磁極８と間隔
体11間を連結する補助間隔体12を形成するようにすれば
良い。As shown in the figure, the spacers 11 and 11 'are formed, for example, in a solo-bang shape by means of resin molding and mounted on the rotor shaft 10, and one of the spacers 11 and 11' In the example, an adhesive may be poured into the gap S formed between the spacing body 11) and the rotating magnetic pole 8 to form the auxiliary spacing body 12 connecting the rotating magnetic pole 8 and the spacing body 11. .
なお，固定子側等のその他の構成は従来のものと同等
でよいので省略する。Other configurations such as the stator side may be the same as those of the related art, and will not be described.
［作用］ 従来の回転電機では，鋼板を積層して構成した回転磁
極と永久磁石の厚さ方向の寸法精度は，板厚及び玉軸受
5,5′間の間隔の寸法精度により，これら玉軸受5,5′に
加える与圧がばらつくため密着度のばらつきを生じ，こ
れらの誤差が累積されて回転電機として重要な性能であ
る位置決め（ヒステリシス）精度を確保することが困難
であった。[Operation] In conventional rotary electric machines, the dimensional accuracy in the thickness direction of the rotating magnetic pole and the permanent magnet, which are formed by stacking steel plates, is determined by the thickness and ball bearing.
Due to the dimensional accuracy of the gap between 5,5 ', the pressure applied to these ball bearings 5,5' varies, causing variations in the degree of adhesion. These errors are accumulated and positioning (which is an important performance as a rotating electric machine) Hysteresis) It was difficult to secure the accuracy.
これに対して，本考案では，一方の回転磁極から所定
の隙間を残して設けて間隔体11,11′で回転磁極及び永
久磁石を挟み込むことにより次のように回転子を構成す
る。On the other hand, in the present invention, a rotor is constituted as follows by providing a predetermined gap from one of the rotating magnetic poles and sandwiching the rotating magnetic poles and the permanent magnets with the spacers 11 and 11 '.
即ち，本考案のように，回転子軸が段付でないストレ
ート軸の場合，図示のように各間隔体11,11′外側面の
間隔L1は治具により定間隔に配置し，一方の間隔体11′
回転子（回転子磁極7,永久磁石9,回転子磁極８の横幅の
累計幅に当たる間隔L2とし，他方の間隔体11は隙間12を
残し，この隙間12に接着材を流し込んで回転子磁極と共
に固定するようにしたため，L2の寸法差による玉軸受間
の間隔の変化は影響が生じないようになっている。That is, as in the present invention, when a straight shaft rotor shaft is not stepped, distance L1 of each interval bodies 11, 11 'outer surface as shown is disposed in a constant interval by a jig, one of the spacing Body 11 '
The rotor (rotor poles 7, the permanent magnet 9, and the distance L2 which corresponds to the cumulative width of the width of the rotor poles 8, other spacing member 11 leaves the gap 12, the rotor poles by pouring adhesive in the gap 12 due to so as to fix the change in spacing between the ball bearings due to dimensional differences L2 is affected so as not occur with.
なお，補助間隔体12の成形作業は間隔体11の外形形状
がソロバン状に形成されているので容易に行うことがで
きる。The forming operation of the auxiliary spacer 12 can be easily performed because the outer shape of the spacer 11 is formed in a solo-bang shape.
［考案の効果］ 本考案は上記のように構成されるから次のような優れ
た効果を有する。[Effects of the Invention] The present invention is configured as described above and has the following excellent effects.
回転子軸が段部のないストレート軸であるため，間隔
体を介して玉軸受間の間隔を他の部品に影響を受けずに
精度良く決められ，玉軸受へ加える与圧を均一とできる
ことが可能となった。Since the rotor shaft is a straight shaft with no step, the distance between the ball bearings can be determined accurately via the spacers without being affected by other parts, and the pressure applied to the ball bearings can be uniform. It has become possible.
単品部品（回転子磁極，永久磁石）の製作誤差を，部
品組み立て後に吸収して精度良く仕上げることが可能と
なる。Manufacturing errors of individual parts (rotor magnetic poles, permanent magnets) can be absorbed after the parts are assembled, and the parts can be finished with high accuracy.
部品組み立て後に必要とした軸受間隔間の寸法精度が
高い精度で得られ，このための手段として設ける間隔体
は樹脂モールドにより，また補助間隔体も接着材の流し
込みで容易に製作することができるため，回転子の製作
コストも安価になる。The required dimensional accuracy between the bearing gaps required after the assembly of the parts can be obtained with high accuracy. The spacing body provided as a means for this can be easily manufactured by resin molding, and the auxiliary spacing body can be easily manufactured by pouring the adhesive. In addition, the manufacturing cost of the rotor is reduced.
また、一方の間隔体11のソロバン玉の形状に形成され
ているもう一方の外形勾配面（玉軸受側の反対側）は、
接着剤注入により形成される補助間隔体の形成を容易と
する機能も有する。Also, the other outer slope surface (the opposite side to the ball bearing side) of one of the spacers 11 formed in the shape of a solo ball is
It also has a function of facilitating the formation of the auxiliary spacing member formed by injecting the adhesive.
第１図は本考案の一実施例を示す回転子部分の要部を示
す正面図，第２図は従来例を示すもので，同図（イ）は
縦断正面図，同図（ロ）は（イ）のＡ′−Ａ′断面図で
ある。 5,5′：玉軸受 7,8:回転磁極 9:永久磁石 11,11′：間隔体 12:補助間隔体FIG. 1 is a front view showing a main part of a rotor portion showing one embodiment of the present invention, FIG. 2 is a view showing a conventional example, FIG. 1 (a) is a longitudinal sectional front view, and FIG. It is A'-A 'sectional drawing of (a). 5,5 ': Ball bearing 7,8: Rotating magnetic pole 9: Permanent magnet 11,11': Spacing body 12: Auxiliary spacing body
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990027710UJP2533298Y2 (en) | 1990-03-20 | 1990-03-20 | Rotating electric machine rotor |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990027710UJP2533298Y2 (en) | 1990-03-20 | 1990-03-20 | Rotating electric machine rotor |
| Publication Number | Publication Date |
|---|---|
| JPH03120680U JPH03120680U (en) | 1991-12-11 |
| JP2533298Y2true JP2533298Y2 (en) | 1997-04-23 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990027710UExpired - Fee RelatedJP2533298Y2 (en) | 1990-03-20 | 1990-03-20 | Rotating electric machine rotor |
| Country | Link |
|---|---|
| JP (1) | JP2533298Y2 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2370264B1 (en) | 2008-12-25 | 2014-08-27 | Brother Kogyo Kabushiki Kaisha | Tape cassette and tape printer |
| EP2965916B1 (en) | 2008-12-25 | 2021-03-03 | Brother Kogyo Kabushiki Kaisha | Tape cassette and tape printer |
| WO2010113782A1 (en) | 2009-03-31 | 2010-10-07 | ブラザー工業株式会社 | Tape cassette |
| CN102361760B (en) | 2009-03-31 | 2015-04-01 | 兄弟工业株式会社 | with box |
| EP4067095B1 (en) | 2009-03-31 | 2025-08-20 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
| JP5136503B2 (en) | 2009-03-31 | 2013-02-06 | ブラザー工業株式会社 | Tape cassette |
| RU2533666C2 (en) | 2009-03-31 | 2014-11-20 | Бразер Когио Кабусики Кайся | Cassette with tape and tape printer |
| WO2011001487A1 (en) | 2009-06-30 | 2011-01-06 | Brother Kogyo Kabushiki Kaisha | Tape cassette and tape printer |
| EP2514600B1 (en) | 2009-12-16 | 2015-01-21 | Brother Kogyo Kabushiki Kaisha | Tape cassette |
| CN102481794B (en) | 2009-12-28 | 2014-12-10 | 兄弟工业株式会社 | with box |
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|---|---|---|---|---|
| JPS613267Y2 (en)* | 1976-07-28 | 1986-02-01 | ||
| CA1198144A (en)* | 1982-02-01 | 1985-12-17 | Harry G. Manson | Method of supporting the rotor of a stepper motor, and stepper motor including such support |
| JPS605280U (en)* | 1983-06-23 | 1985-01-16 | ミツミ電機株式会社 | stepping motor |
| Publication number | Publication date |
|---|---|
| JPH03120680U (en) | 1991-12-11 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |