JPS6091852A - Rotary motor - Google Patents
Rotary motorInfo
- Publication number
- JPS6091852A JPS6091852A JP19688083A JP19688083A JPS6091852A JP S6091852 A JPS6091852 A JP S6091852A JP 19688083 A JP19688083 A JP 19688083A JP 19688083 A JP19688083 A JP 19688083A JP S6091852 A JPS6091852 A JP S6091852A
- Authority
- JP
- Japan
- Prior art keywords
- stator
- rotor
- magnetic poles
- small gap
- stator magnetic
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/15—Mounting arrangements for bearing-shields or end plates
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Brushless Motors (AREA)
Abstract
Description
【発明の詳細な説明】
弦亙分旦
この発明は1回転子外周面に形成された回転子磁極と、
固定子内周面に形成された固定子磁極とを、小さな空隙
を介して対向させた回転電動機に関する。[Detailed Description of the Invention] This invention provides rotor magnetic poles formed on the outer peripheral surface of the rotor;
The present invention relates to a rotary electric motor in which stator magnetic poles formed on the inner circumferential surface of the stator are opposed to each other with a small gap interposed therebetween.
亘迷■皿
従来、この種の回転電動機において、回転子磁極と固定
子磁極との相対位置(特に小空隙)の精度を良くするた
めには。Conventionally, in this type of rotary motor, in order to improve the accuracy of the relative position (especially in small gaps) between the rotor magnetic poles and stator magnetic poles.
(イ) 回転子を回転自在に軸支する部材の一部と、固
定子の外周面の一部を嵌合させる、
(ロ) 回転子を軸支する部材の一部と、固定子磁極を
支持する部材の一部を嵌合させる。(b) Fitting a part of the member that rotatably supports the rotor with a part of the outer peripheral surface of the stator; (B) Fitting a part of the member that rotatably supports the rotor with the stator magnetic poles; Part of the supporting member is fitted.
(ハ)回転子を軸支する部材を、固定子の端面または外
周面に、位置決め治具等を用いて溶接や接着によって固
定する、
といった方法が採られていた。(c) A method has been adopted in which the member that supports the rotor is fixed to the end face or outer peripheral surface of the stator by welding or gluing using a positioning jig or the like.
しかし、(イ)のものは、回転子を軸支する部材の一部
、つまり固定°子外周面と嵌合する部分と回転子を支持
する軸受との相対寸法のバラツキ、および固定子外周面
と固定子磁極との相対寸法の差や偏心が、回転子磁極と
固定子磁極との相対位置精度を悪くするばかりでなく、
回転子を軸支する部材の上記嵌合部分の高精度加工や固
定子外周面の高精度加工が必要となり、コスト高になっ
ていた。However, in (a), there are variations in the relative dimensions of a part of the member that pivotally supports the rotor, that is, the part that fits with the outer circumferential surface of the stator and the bearing that supports the rotor, and the outer circumferential surface of the stator. The difference in relative dimensions and eccentricity between the rotor magnetic poles and the stator magnetic poles not only deteriorate the relative positional accuracy between the rotor magnetic poles and the stator magnetic poles, but also
High-precision machining of the fitting portion of the member that pivotally supports the rotor and high-precision machining of the outer circumferential surface of the stator are required, resulting in high costs.
第1図は、この(イ)の形式に属する従来のハイブリッ
ドステップモータを示す。同図において、ハウジング(
1)とハウジング(2)は、ベアリンク(3)を介して
回転子(4)を回転自在に軸支している。回転子(4)
の外周面に形成された回転子磁極(5)は、小空隙(G
)を介し、固定子(6)の内周面に形成された固定子磁
極(7)と対向しており、回転子(4)の永久磁石の磁
束と、固定子(6)のコイル(8)の励Gj&磁束とに
よって、両磁極(5)・(7)が小空隙(G)を介して
磁気的に結合し1回転子(4)が回転する。このとき、
小空隙(G)の精度が悪いと、回転ムラやステップ角度
の変動やトルク変動が生じる。また、小室m(G)のバ
ラツキが大きいと、その設定値を小さくすることができ
ないため、大きな永久磁石や大きな起磁力を必要とした
り、ステップ角度精度が悪くなったりする。FIG. 1 shows a conventional hybrid step motor belonging to type (a). In the figure, the housing (
1) and the housing (2) rotatably support a rotor (4) via a bear link (3). Rotor (4)
The rotor magnetic poles (5) formed on the outer peripheral surface of the rotor have a small air gap (G
) is opposed to the stator magnetic poles (7) formed on the inner peripheral surface of the stator (6), and the magnetic flux of the permanent magnets of the rotor (4) and the coils (8) of the stator (6) are opposed to each other. ), the magnetic poles (5) and (7) are magnetically coupled through a small gap (G), and one rotor (4) rotates. At this time,
If the precision of the small gap (G) is poor, uneven rotation, fluctuations in step angle, and torque fluctuations will occur. Further, if the variation in the small chamber m(G) is large, the set value cannot be reduced, so a large permanent magnet or a large magnetomotive force is required, and the step angle accuracy becomes poor.
そこで、従来においては、小空隙(G)のバラツキを小
さくするために、ハウジング(1)・(2)の固定子嵌
合部分(1a)・(2a)を、ベアリング嵌合部分(1
b)・(2b)と同軸度が出るように精密仕上げ加工す
るとともに、固定子(6)の外周面の嵌合部分(6a)
も固定子磁極(7)と同軸度が出るように精密仕上げ加
工している。ところが、ハウジング(1)・(2)の固
定子嵌合部分(1a)・(2a)およびベアリング嵌合
部分(1b)・(2b)の同軸度と、固定子(6)の嵌
合部分(6a)および固定子磁極(7)の同軸度とが、
小空隙(G)のバラツキ要因となるため、そのバラツキ
および設定値を小さくすることが難しく、精密加工を要
する部分が多いことから、コスト高になるという欠点が
あった。Therefore, in the past, in order to reduce the variation in the small gap (G), the stator fitting portions (1a) and (2a) of the housings (1) and (2) were replaced with the bearing fitting portion (1).
b) and (2b), and the mating part (6a) of the outer circumferential surface of the stator (6).
It is also precisely finished so that it is coaxial with the stator magnetic pole (7). However, the coaxiality of the stator fitting parts (1a) and (2a) of the housings (1) and (2) and the bearing fitting parts (1b) and (2b) and the fitting part of the stator (6) ( 6a) and the coaxiality of the stator magnetic pole (7),
Since this causes variation in the small gap (G), it is difficult to reduce the variation and set value, and many parts require precision machining, resulting in high costs.
また、上記(ロ)のものは、固定子磁極とそれを支持す
る部材との相対寸法上の差や偏心、および回転子軸とそ
の軸受部との相対寸法上の差や偏心が、回転子磁極と固
定子磁極の相対位置精度を悪くするばかりでなく、多く
の高精度加工を必要とし、コスト高となっていた。In addition, in the case of (b) above, the relative dimensional difference and eccentricity between the stator magnetic poles and the members that support them, and the relative dimensional difference and eccentricity between the rotor shaft and its bearing part, This not only deteriorates the relative positional accuracy between the magnetic poles and the stator magnetic poles, but also requires a lot of high-precision machining, resulting in high costs.
第2図は、この(ロ)の形式に属する従来の直流モータ
を示す。同図において回転子(9)は、ハウジング(1
0)とステータヨーク(11)によって回転自在に軸支
され、ハウジング(lO)は、その嵌合部(10a)に
おいてステータヨーク(11)と嵌合されている。した
がって、固定子磁石(12)とステータヨーり(11)
の同軸度、およびハウジング(10)の−嵌合部(10
a)と軸受(13)の同軸度が、小空隙(G)のバラツ
キの要因となっていた。FIG. 2 shows a conventional DC motor belonging to the type (b). In the figure, the rotor (9) has a housing (1
The housing (lO) is rotatably supported by the stator yoke (11) and the stator yoke (11), and the housing (lO) is fitted with the stator yoke (11) at its fitting portion (10a). Therefore, the stator magnet (12) and the stator yaw (11)
coaxiality of the housing (10) and the -fitting part (10) of the housing (10).
The coaxiality of a) and the bearing (13) was a factor in the variation in the small gap (G).
上ii1!(ハ)のものは、各部品加工寸法のバラツキ
および位置決め誤差によって、回転子磁極と固定子磁極
の相対位置精度が悪くなり、また位置決め工程および溶
接または接着工程が加わるため、これもまたコスト高と
なっていた。Top ii1! In the case of (c), the relative positional accuracy of the rotor magnetic poles and stator magnetic poles deteriorates due to variations in the machining dimensions of each part and positioning errors, and the positioning process and welding or gluing process are added, which also increases costs. It became.
l−一カ
この発明の目的は、回転子磁極と固定子磁極の相対位置
精度を向上させることによって、軽量・小型・高性能・
低コスト化が図れる回転電動機の提供にある。The purpose of this invention is to improve the relative positional accuracy of rotor magnetic poles and stator magnetic poles, thereby achieving lightweight, compact, high performance,
The object of the present invention is to provide a rotating electric motor that can reduce costs.
構 成
この発明は、回転子を回転自在に軸支する部材と固定子
磁極とを1部分的に直接嵌合させたことを特徴とするも
ので、次にその実施例を図面に基づいて説明する。Structure This invention is characterized in that a member that rotatably supports the rotor and the stator magnetic poles are partially directly fitted together. Next, an embodiment thereof will be described based on the drawings. do.
第1図は、ハイブリッド型ステップモータに適用したこ
の発明の第1実施例を示すにの実施例のものが、前述し
た第1図の従来のものと相違する点は、固定子(6)の
内周面に形成された固定子磁極(7)の両端部(7a)
を、ハウジング(1)・(2)の内側の嵌合部(lc)
・(2C)に直接嵌合したことにある。このような構造
によると、固定子(6)と固定子磁極(7)との同軸度
が小空隙(G)に影響しないため、小空隙(G)のバラ
ツキおよび設定値を小さくすることができる。したがっ
て、磁気回路としての効率が向上するため、回転子(4
)の永久磁石を小さくしたり、固定子(6)のコイル(
8)の起磁力を小さくでき、軽量・小型・高性能・低コ
スト化できる。FIG. 1 shows a first embodiment of the present invention applied to a hybrid step motor.The difference between this embodiment and the conventional one shown in FIG. 1 described above is that the stator (6) is Both ends (7a) of the stator magnetic poles (7) formed on the inner peripheral surface
, the fitting part (lc) inside the housing (1) and (2)
・The reason is that it is directly fitted to (2C). According to such a structure, the coaxiality between the stator (6) and the stator magnetic poles (7) does not affect the small gap (G), so the variation in the small gap (G) and the set value can be reduced. . Therefore, the efficiency of the magnetic circuit is improved, so the rotor (4
), or reduce the size of the permanent magnet of the stator (6).
8) The magnetomotive force can be reduced, making it lightweight, compact, high performance, and low cost.
第4図は、直流モータに適用したこの発明の第2実施例
を示す。この第2実施例のものが、前述した第2図の従
来のものと相違する点は、ハウジング(10)の嵌合部
(10a)を、固定子磁石(12)の内周面の一端部(
12a)に直接嵌合したことにある。FIG. 4 shows a second embodiment of the invention applied to a DC motor. The difference between this second embodiment and the conventional one shown in FIG. (
12a).
このような構造によると、固定子磁石(12)とステー
タヨーク(11)の同軸度が小空隙(G)のバラツキ要
因とならないため、そのバラツキが小さくなる。According to such a structure, the coaxiality of the stator magnet (12) and the stator yoke (11) does not become a factor of variation in the small gap (G), so the variation is reduced.
したがって、回転ムラやトルクムラが小さくなるばかり
でなく、小空隙(G)の設定値を小さくできるため、磁
気回路としての効率が向上し、軽量・小型・高性能・低
コスト化が図れる。Therefore, not only rotational unevenness and torque unevenness are reduced, but also the set value of the small gap (G) can be made small, so the efficiency of the magnetic circuit is improved, and it is possible to achieve light weight, small size, high performance, and low cost.
倭−一来
以上のようにこの発明によれば、固定子磁極と回転子磁
極との間の小空隙のバラツキを簡単に小さくすることが
でき、回転ムラ・トルクムラが少なくなる。また、小空
隙のバラツキを小さくすることができるため、その設定
値をも小さくでき。As described above, according to the present invention, variations in the small gap between the stator magnetic poles and the rotor magnetic poles can be easily reduced, and rotational unevenness and torque unevenness are reduced. In addition, since the variation in small gaps can be reduced, the set value can also be reduced.
軽量・小型・高性能・低コスト化が図れる。Light weight, small size, high performance, and low cost can be achieved.
第1図は従来のハイブリッド型ステップモータの断面図
、第2図は従来の直流モータの断面図、第3図はこの発
明の第1実施例の断面図、第4図は第2実施例の断面図
である。
(1)・(2)・・・・・・・・ハウジング(3)・・
・・・・・・ベアリング
(4)・・・・・・・・・回転子
(5)・・・・・・・・・回転子磁極
(6)・・・・・・・・・固定子
(7)・・・・・・・・・固定子磁極
(9)・・・・・・・・・回転子
(10)・・・・・・・・・ハウジング(11)・・・
・・・・・・ステータヨーク(12)・・・・・・・・
・固定子磁石(G)・・・・・・・・小空隙。
特許出願人 リコ一時計株式会社
代理人 弁理士 ・ 中 尾 俊 介Fig. 1 is a sectional view of a conventional hybrid step motor, Fig. 2 is a sectional view of a conventional DC motor, Fig. 3 is a sectional view of the first embodiment of the present invention, and Fig. 4 is a sectional view of the second embodiment. FIG. (1)・(2)・・・・Housing (3)・・
...Bearing (4) ...Rotor (5) ...Rotor magnetic pole (6) ...Stator (7)...Stator magnetic pole (9)...Rotor (10)...Housing (11)...
・・・・・・Stator yoke (12)・・・・・・・・・
・Stator magnet (G)...Small air gap. Patent applicant: Rico Ichitoki Co., Ltd. Patent attorney: Shunsuke Nakao
Claims (1)
に形成さ社た固定子磁極とが小さな空隙を介して対向す
る回転電動機において、前記回転子を回転自在に軸支す
る部材の少なくとも一部と、前記固定子磁極の少なくと
も一部とを嵌合させることによって、回転子磁極と固定
子磁極の相対位置を設定してなることを特徴とする回転
電動機。A member that rotatably supports the rotor in a rotating electric motor in which rotor magnetic poles formed on the outer circumferential surface of the rotor and stator magnetic poles formed on the inner circumferential surface of the stator face each other with a small gap interposed therebetween. A rotary electric motor characterized in that the relative positions of the rotor magnetic poles and the stator magnetic poles are set by fitting at least a portion of the stator magnetic poles with at least a portion of the stator magnetic poles.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19688083A JPS6091852A (en) | 1983-10-20 | 1983-10-20 | Rotary motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19688083A JPS6091852A (en) | 1983-10-20 | 1983-10-20 | Rotary motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6091852A true JPS6091852A (en) | 1985-05-23 |
Family
ID=16365181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19688083A Pending JPS6091852A (en) | 1983-10-20 | 1983-10-20 | Rotary motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6091852A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0957562A2 (en) * | 1998-05-12 | 1999-11-17 | Minebea Co., Ltd. | Stepping motor |
EP1018796A2 (en) * | 1999-01-06 | 2000-07-12 | Seiko Epson Corporation | Stepping motor |
FR2943863A1 (en) * | 2009-03-31 | 2010-10-01 | Somfy Sas | TURBULAR TYPE INDUCTION MOTOR WITH TWO DIRECTION OF ROTATION FOR DOMOTIC APPLICATIONS. |
EP3334013A4 (en) * | 2015-08-03 | 2019-02-27 | LG Innotek Co., Ltd. | Housing and motor including same |
-
1983
- 1983-10-20 JP JP19688083A patent/JPS6091852A/en active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0957562A2 (en) * | 1998-05-12 | 1999-11-17 | Minebea Co., Ltd. | Stepping motor |
EP0957562A3 (en) * | 1998-05-12 | 2001-10-04 | Minebea Co., Ltd. | Stepping motor |
EP1018796A2 (en) * | 1999-01-06 | 2000-07-12 | Seiko Epson Corporation | Stepping motor |
EP1018796A3 (en) * | 1999-01-06 | 2001-03-28 | Seiko Epson Corporation | Stepping motor |
FR2943863A1 (en) * | 2009-03-31 | 2010-10-01 | Somfy Sas | TURBULAR TYPE INDUCTION MOTOR WITH TWO DIRECTION OF ROTATION FOR DOMOTIC APPLICATIONS. |
EP2237396A1 (en) * | 2009-03-31 | 2010-10-06 | Somfy SAS | Bi-directional tubular type induction motor for home-automation |
US8330309B2 (en) | 2009-03-31 | 2012-12-11 | Somfy Sas | Tubular induction motor with two directions of rotation for home-automation applications |
EP3334013A4 (en) * | 2015-08-03 | 2019-02-27 | LG Innotek Co., Ltd. | Housing and motor including same |
US10651703B2 (en) | 2015-08-03 | 2020-05-12 | Lg Innotek Co., Ltd. | Housing and motor including same |
US10892661B2 (en) | 2015-08-03 | 2021-01-12 | Lg Innotek Co., Ltd. | Motor |
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