JPS6350947B2 - - Google Patents
Info
- Publication number
- JPS6350947B2 JPS6350947B2 JP56051469A JP5146981A JPS6350947B2 JP S6350947 B2 JPS6350947 B2 JP S6350947B2 JP 56051469 A JP56051469 A JP 56051469A JP 5146981 A JP5146981 A JP 5146981A JP S6350947 B2 JPS6350947 B2 JP S6350947B2
- Authority
- JP
- Japan
- Prior art keywords
- stator
- ring
- rotor
- shaped
- installation part
- 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
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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1737—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
【発明の詳細な説明】
本発明は、例えばカメラにおける絞り機構等に
用いて便なる中空形モータを提供しようとするも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention aims to provide a hollow motor that is convenient for use in, for example, an aperture mechanism in a camera.
従来のモータは、中心に駆動軸を備え、これに
歯車、プーリー等を取付け、動力を外部に取出し
ている。このため、例えばカメラの絞り機構をモ
ータに連動させる場合、レンズ鏡胴にモータを内
蔵させることができず、カメラ本体が大型化した
り、伝達機構が複雑となり、電動式絞り機構の実
用化が遅れている。 A conventional motor has a drive shaft in the center, to which gears, pulleys, etc. are attached, and power is taken out to the outside. For this reason, for example, when linking a camera's aperture mechanism to a motor, it is not possible to incorporate the motor into the lens barrel, which increases the size of the camera body and complicates the transmission mechanism, delaying the practical application of electric aperture mechanisms. ing.
そこで本発明は、ロータおよびステータをリン
グ状に形成して中心部の空胴を光等が通過可能と
したもので、以下本発明の一実施例を添付図面を
参照して説明する。なお、実施例においては、１
入力信号に対応して１進歩角だけ回転する所謂ス
テツピングモータに適用した例を説明する。第１
図〜第３図において、１はリング状のステータで
内周面の軸方向に多数の歯２ａ，２a′，３ａ，３
a′を有するリング状の２，２′，３，３′と、この
ヨーク２，２′，３，３′内に装備されるステータ
コイル４，４′とにより構成している。５はリン
グ状のマグネツトロータで、多極着磁が施されて
いる。６はステータ１およびマグネツトロータ５
を支持するリング状の軸受装置で、内周面にボー
ル７の案内溝８ａを有する軸受外輪８と、外周面
にボール７の案内溝９ａを有する軸受内輪９と、
多数のボール７を等間隔に保持するリテーナ１０
とよりなり、軸受外輪８の軸方向端面（案内溝８
ａを有する摺動面に直角の平面）にはステータ１
を支持するステータ設置部８ｂを形成し、軸受内
輪９の軸方向端面にはマグネツトロータ５を支持
するロータ設置部９ｂを形成している。また、ス
テータ設置部８ｂの外周端には軸方向に突出する
リング状の位置規制片８ｃが形成してあり、この
位置規制片８ｃにステータ１の外周面を当接させ
てステータ設置部８ｂにステータ１を同心的に接
着固定している。さらに、ロータ設置部９ｂの内
周端には、軸方向に突出するリング状の位置規制
片９ｃが形成してあり、この位置規制片９ｃにマ
グネツトロータ５の内周面を当接させてロータ設
置部９ｂにマグネツトロータ５を同心的に接着固
定している。 Therefore, in the present invention, the rotor and stator are formed in a ring shape so that light, etc. can pass through a cavity in the center.One embodiment of the present invention will be described below with reference to the accompanying drawings. In addition, in the example, 1
An example in which the present invention is applied to a so-called stepping motor that rotates by one advance angle in response to an input signal will be described. 1st
In Figures to Figures 3, 1 is a ring-shaped stator with a large number of teeth 2a, 2a', 3a, 3 in the axial direction on the inner circumferential surface.
It consists of ring-shaped yokes 2, 2', 3, 3' having a', and stator coils 4, 4' installed inside these yokes 2, 2', 3, 3'. 5 is a ring-shaped magnetic rotor, which is multi-pole magnetized. 6 is the stator 1 and the magnetic rotor 5
This is a ring-shaped bearing device that supports a bearing device, which includes an outer bearing ring 8 having a guide groove 8a for the balls 7 on the inner circumferential surface, and an inner bearing ring 9 having a guide groove 9a for the balls 7 on the outer circumferential surface.
A retainer 10 that holds a large number of balls 7 at equal intervals
Therefore, the axial end face of the bearing outer ring 8 (the guide groove 8
stator 1 on the plane perpendicular to the sliding surface with a
A stator installation portion 8b for supporting the magnetic rotor 5 is formed, and a rotor installation portion 9b for supporting the magnet rotor 5 is formed on the axial end face of the bearing inner ring 9. Furthermore, a ring-shaped position regulating piece 8c that protrudes in the axial direction is formed at the outer circumferential end of the stator installation portion 8b, and the outer circumferential surface of the stator 1 is brought into contact with this position regulating piece 8c. The stator 1 is adhesively fixed concentrically. Furthermore, a ring-shaped position regulating piece 9c is formed at the inner circumferential end of the rotor installation portion 9b and projects in the axial direction, and the inner circumferential surface of the magnet rotor 5 is brought into contact with this position regulating piece 9c. The magnetic rotor 5 is concentrically adhesively fixed to the rotor installation portion 9b.
以上の構成において、ヨーク２，２′の歯２ａ，
２a′とヨーク３，３′の歯３ａ，３a′とは異極性
となつてマグネツトロータ５とによつて磁路を構
成し、安定位置が定まり、コイル４，４′の励磁
状態の変化に伴ない順次安定位置が移動して、マ
グネツトロータ５が回転する。 In the above configuration, the teeth 2a of the yokes 2, 2',
2a' and the teeth 3a, 3a' of the yokes 3, 3' have different polarities and form a magnetic path with the magnet rotor 5, a stable position is determined, and the excitation state of the coils 4, 4' changes. Accordingly, the stable position sequentially moves and the magnet rotor 5 rotates.
第４図は本発明のモータをカメラの絞り機構に
連動させた構成を示すもので、レンズＡと同心的
にモータＢを設置し、連結板Ｃを介して絞り機構
Ｄに連結したものである。 Figure 4 shows a configuration in which the motor of the present invention is linked to the aperture mechanism of a camera, in which a motor B is installed concentrically with the lens A and is connected to the aperture mechanism D via a connecting plate C. .
以上の説明から明らかなように本発明は、中心
部に軸が存在しない新規なモータを得ることがで
き、中空部に光、その他を通すことができるとい
う格別な効果を奏する。また、軸受外輪のステー
タ設置部、軸受内輪のロータ設置部にリング状の
位置規制片を形成することにより、同心精度、耐
衝撃性等を向上させることができ、精度の高いモ
ータを得ることができる。したがつてカメラ等の
精密機器に使用した際に機器の精度を保持でき
る。 As is clear from the above description, the present invention has the special effect of being able to obtain a novel motor without a shaft in the center, and allowing light and other objects to pass through the hollow portion. In addition, by forming ring-shaped position regulating pieces on the stator installation part of the bearing outer ring and the rotor installation part of the bearing inner ring, concentric accuracy, impact resistance, etc. can be improved, and a highly accurate motor can be obtained. can. Therefore, when used in precision equipment such as cameras, the accuracy of the equipment can be maintained.
第１図ａ，ｂ，ｃは本発明の一実施例にかかる
モータの正面図、側断面図および背面図、第２図
ａは同モータの拡大断面図、第２図ｂは同軸受外
輪の拡大断面図、第２図ｃは同軸受内輪の拡大断
面図、第３図は同ステータヨークの一部の切欠斜
視図、第４図は同モータをカメラの絞り機構に連
結した構成を示す断面図である。
１……ステータ、４，４′……ステータコイル、
５……マグネツトロータ、６……軸受装置、７…
…ボール、８……軸受外輪、９……軸受内輪、８
ａ，９ａ……案内溝、８ｂ……ステータ設置部、
９ｂ……ロータ設置部、８ｃ，９ｃ……位置規制
片。
Figures 1a, b, and c are a front view, side sectional view, and rear view of a motor according to an embodiment of the present invention, Figure 2a is an enlarged sectional view of the same motor, and Figure 2b is an outer ring of the same bearing. Fig. 2c is an enlarged sectional view of the inner ring of the coaxial bearing, Fig. 3 is a partially cutaway perspective view of the stator yoke, and Fig. 4 is a cross-sectional view showing the structure in which the motor is connected to the aperture mechanism of the camera. It is a diagram. 1... Stator, 4, 4'... Stator coil,
5...Magnetic rotor, 6...Bearing device, 7...
... Ball, 8 ... Bearing outer ring, 9 ... Bearing inner ring, 8
a, 9a...Guide groove, 8b...Stator installation part,
9b...Rotor installation part, 8c, 9c...Position regulating piece.
Claims (1)
タと、このステータ内に若干の間隙を有して装備
されるリング状のマグネツトロータと、前記ステ
ータおよびマグネツトロータを支持するリング状
の軸受装置とを備え、前記軸受装置は、内周面に
ボールの案内溝を有するリング状の軸受外輪と、
外周面にボールの案内溝を有するリング状の軸受
内輪とよりなり、前記軸受外輪の軸方向端面には
前記ステータを支持するステータ設置部を形成
し、かつ前記ステータ設置部の外周端には、軸方
向に突出するリング状の位置規制片を有し、前記
軸受内輪の軸方向端面には前記マグネツトロータ
を支持するロータ設置部を形成し、かつ前記ロー
タ設置部の内周端には、軸方向に突出するリング
状の位置規制片を有し、前記ステータ設置部の位
置規制片に前記ステータの外周面を当接させてス
テータを固定すると共に、前記ロータ設置部の位
置規制片にマグネツトロータの内周面を当接させ
てマグネツトロータを固定してなる中空形モー
タ。1. A ring-shaped stator with a built-in stator coil, a ring-shaped magnet rotor installed with a slight gap inside the stator, and a ring-shaped bearing device that supports the stator and magnet rotor. The bearing device includes a ring-shaped bearing outer ring having a ball guide groove on an inner peripheral surface;
It consists of a ring-shaped bearing inner ring having a ball guide groove on the outer peripheral surface, a stator installation part for supporting the stator is formed on the axial end face of the bearing outer ring, and the outer peripheral end of the stator installation part has: A ring-shaped position regulating piece protrudes in the axial direction, a rotor installation part for supporting the magnetic rotor is formed on the axial end face of the bearing inner ring, and an inner circumferential end of the rotor installation part includes: It has a ring-shaped position regulating piece that protrudes in the axial direction, and fixes the stator by bringing the outer peripheral surface of the stator into contact with the position regulating piece of the stator installation part, and also fixes the stator with the position regulating piece of the rotor installation part. A hollow motor with a magnet rotor fixed by bringing the inner peripheral surface of the magnet rotor into contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5146981A JPS57166847A (en) | 1981-04-06 | 1981-04-06 | Hollow motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5146981A JPS57166847A (en) | 1981-04-06 | 1981-04-06 | Hollow motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57166847A JPS57166847A (en) | 1982-10-14 |
| JPS6350947B2 true JPS6350947B2 (en) | 1988-10-12 |
Family
ID=12887795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5146981A Granted JPS57166847A (en) | 1981-04-06 | 1981-04-06 | Hollow motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57166847A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61117589U (en) * | 1985-01-09 | 1986-07-24 | ||
| US4695145A (en) * | 1985-02-07 | 1987-09-22 | Canon Kabushiki Kaisha | Motor built-in lens mounting |
| US6798093B2 (en) | 2000-07-28 | 2004-09-28 | Canon Kabushiki Kaisha | Dual coil permanent magnet motor having inner annular member |
| US6710563B2 (en) | 2001-03-12 | 2004-03-23 | Canon Kabushiki Kaisha | Driving device, light amount controller and shutter |
| US6727672B2 (en) | 2001-03-12 | 2004-04-27 | Canon Kabushiki Kaisha | Driving device and light amount controller |
| JP4455407B2 (en) | 2005-05-31 | 2010-04-21 | キヤノン株式会社 | Drive device |
| CN107932465B (en) * | 2017-12-25 | 2020-02-07 | 北京金风科创风电设备有限公司 | Bearing placing device and bearing storing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49150302U (en) * | 1973-04-25 | 1974-12-26 | ||
| JPS51104508A (en) * | 1975-03-10 | 1976-09-16 | Shiro Kamakura | Doryokudentatsujikuo jushinai mootaa |
-
1981
- 1981-04-06 JP JP5146981A patent/JPS57166847A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57166847A (en) | 1982-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2573859Y2 (en) | Home position return mechanism for electromagnetic finite rotary motor | |
| JPS6350947B2 (en) | ||
| US4319823A (en) | Electromagnetic driving device | |
| US4601564A (en) | Lens barrel having motor | |
| JPS6212570B2 (en) | ||
| US6317562B1 (en) | Lens driving apparatus | |
| JP2751151B2 (en) | Camera focusing device | |
| JP2673195B2 (en) | Linear motor device | |
| JPH06208070A (en) | Biaxial driving device and rotational driving device | |
| JP2556473B2 (en) | Electromagnetic drive diaphragm device | |
| JPS6233515Y2 (en) | ||
| JPS60415A (en) | Lens driving device | |
| JP2550109B2 (en) | Aperture device | |
| JPS61116944A (en) | Stepping motor | |
| JPS60416A (en) | Lens driving device | |
| JPS6118499Y2 (en) | ||
| JP2512801Y2 (en) | Motor | |
| JPH0822029B2 (en) | Optical aperture adjustment device | |
| JPH0192707A (en) | Lens driving device for camera | |
| JP2550110B2 (en) | Electromagnetic drive diaphragm device | |
| JP2529328Y2 (en) | Permanent magnet type stepping motor with rotation sensor | |
| JPS6015176Y2 (en) | Eddy current indicator | |
| JPS60417A (en) | Lens driving device | |
| JPH0810309B2 (en) | Electric exposure adjustment device | |
| JPS59116628A (en) | Driving device of photographic lens |