JPH01190250A - Cylindrical linear induction motor - Google Patents
Cylindrical linear induction motorInfo
- Publication number
- JPH01190250A JPH01190250A JP1217388A JP1217388A JPH01190250A JP H01190250 A JPH01190250 A JP H01190250A JP 1217388 A JP1217388 A JP 1217388A JP 1217388 A JP1217388 A JP 1217388A JP H01190250 A JPH01190250 A JP H01190250A
- Authority
- JP
- Japan
- Prior art keywords
- iron core
- slits
- induction motor
- linear induction
- cylindrical linear
- 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
- 230000006698 induction Effects 0.000 title claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 230000004907 flux Effects 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 5
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 2
- 238000003475 lamination Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000012489 doughnuts Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910001035 Soft ferrite Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
Landscapes
- Linear Motors (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は円筒状のリニア誘導モータに関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a cylindrical linear induction motor.
（従来技術と問題点）
回転形誘導モータにおいては、磁束を発生させる固定子
は、一般に回転子の軸方向と直交する方向に指向する電
磁鋼板を複数枚積層して製作されていて製作の容易化と
渦電流発生の阻止が図られた構造になっている。(Prior art and problems) In a rotary induction motor, the stator that generates magnetic flux is generally manufactured by laminating multiple electromagnetic steel plates oriented in a direction perpendicular to the rotor axis, making it easy to manufacture. The structure is designed to prevent the occurrence of eddy currents and eddy currents.
一方、円筒状リニア誘導モータにおいては、円筒状リニ
ア誘導モータの構想が回転形誘導モータから出発してい
る上に、渦電流発生の阻止などの理由から、円筒状リニ
ア誘導モータの一次側固定子は、複数枚の電磁鋼板を二
次側可動子の移動方向に指向させて積層した構造にする
のが理想的であると考えられているが、電磁鋼板複数枚
を可動子の移動方向に指向させて円筒状に積層するには
、各電磁鋼板を、外側に向って肉厚になるくさび形状に
する必要があり、製造が困難な上に製造費が高むなどの
問題があった。そのため、従来は、積層された電磁鋼板
を複数個環状に配置して固定子を構成するようにしてお
り、性能上および構造上種々問題があった。On the other hand, in the case of a cylindrical linear induction motor, the concept of the cylindrical linear induction motor started from a rotary induction motor, and in order to prevent the generation of eddy current, the primary side stator of the cylindrical linear induction motor It is considered ideal to have a stacked structure in which multiple electromagnetic steel sheets are oriented in the direction of movement of the secondary side mover. In order to stack the magnetic steel sheets in a cylindrical shape, it is necessary to form each electromagnetic steel sheet into a wedge shape that becomes thicker toward the outside, which poses problems such as manufacturing difficulty and high manufacturing costs. Therefore, conventionally, a stator has been constructed by arranging a plurality of laminated electromagnetic steel plates in a ring shape, which has caused various problems in terms of performance and structure.
（目的）
本発明は上記の事情に鑑みてなされたもので、回転形誘
導モータの固定子のように通常の電磁鋼板で製作が可能
な上に、渦電流を抑制可能な固定子を備えた円筒状リニ
ア誘導モータを提供することを目的とする。(Purpose) The present invention was made in view of the above circumstances, and provides a stator that can be manufactured from ordinary electromagnetic steel sheets like the stator of a rotary induction motor, and that can suppress eddy currents. The purpose is to provide a cylindrical linear induction motor.
（構成）
以下、本発明の構成について実施例の図面に基づき詳細
に説明する。円筒状のフレーム（１）内には、断面円形
状の円筒状を成すとともに胴部にこれの長手方向へ延び
るスリット （２ａ）を複数個等ピンチで穿設した軟鋼
部の背面鉄心（２）が装着され（第２図参照）、該背面
鉄心（２）内には、電磁鋼板を積層して成る複数個の鉄
心（３） （８）と、低磁束密度で飽和するソフトフェ
ライト等の磁性体で成り、かつ鉄心（３）とほぼ同一大
きさの内径を有する複数個の環状ディスタントピース（
４） （４）とが、交互に並べられて配設されており、
該鉄心（３）は、第３図に示すようにドーナツ状を成し
、かつこれの半径方向に延びてこれの内周付近から外周
面に達する複数個のスリット （３ａ） （３ａ）と鉄
心（３）の外周付近から内周面に達する複数個のスリッ
ト （３ｂ） （３ｂ）とが交互に等ピンチで形成され
ている。また、ディスタントピース（４） （４）には
、鉄心（８） （８）の半径方向に流れる磁束を発生さ
せるべく２相または３相の交流電源に接続されたコイル
（５）が巻装されている。また、前記フレーム（１）の
両端には、鉄心（８） （８） 、ディスタントピース
（４） （４）等を把持するドーナツ状のブラケッ）
（６） （６）が取り付けられている。かくして円筒状
リニア誘導モータの一次側固定子（７）が構成されてい
る。該一次側固定子（７）にはこれの長手方向へ延びる
とともに断面円形状を成す磁性体製の二次側可動子（８
）が、ブラケッ） （６） （６）に嵌着したブシュ（
９） （９）に摺動自在に交付されて貫装されており、
該可動子（８）は表面に良電導性金属をメツキしたり、
良電導性金属板を装着することにより推力を向上させる
ことができる。(Structure) Hereinafter, the structure of the present invention will be explained in detail based on the drawings of the embodiments. Inside the cylindrical frame (1) is a back core (2) made of mild steel, which has a cylindrical shape with a circular cross section, and has a plurality of slits (2a) equally pinched in the body that extend in the longitudinal direction. is installed (see Figure 2), and inside the back core (2) are multiple cores (3) (8) made of laminated magnetic steel plates, and a magnetic material such as soft ferrite that saturates at low magnetic flux density. A plurality of annular distant pieces (
4) (4) are arranged alternately,
The iron core (3) has a donut shape as shown in FIG. 3, and has a plurality of slits (3a) extending in the radial direction and reaching from near the inner circumference to the outer circumference of the iron core (3a) and the iron core. A plurality of slits (3b) (3b) reaching from near the outer circumference to the inner circumferential surface of (3) are alternately formed with equal pinch. In addition, a coil (5) connected to a two-phase or three-phase AC power source is wound around the distant piece (4) (4) to generate magnetic flux flowing in the radial direction of the iron core (8) (8). has been done. Further, at both ends of the frame (1), there are donut-shaped brackets for gripping the iron core (8), the distant piece (4), etc.
(6) (6) is attached. The primary stator (7) of the cylindrical linear induction motor is thus configured. The primary side stator (7) has a secondary side mover (8) made of a magnetic material that extends in the longitudinal direction of the primary side stator (7) and has a circular cross section.
) is the bracket) (6) The bushing fitted to (6) (
9) (9) is slidably delivered and penetrated,
The surface of the mover (8) is plated with a good conductive metal,
The thrust can be improved by attaching a metal plate with good conductivity.
このように構成した装置は、一次側固定子（７）のコイ
ル（５）に交流電流を流すと鉄心（８） （８）に磁束
が発生するとともに二次側可動子（８）に渦電流が流れ
て推力が発生し、可酊子（８）は固定子（７）の長手方
向へ移動せしめられる。この場合、コイル（５）に交流
電流を流すと、背面鉄心（２）および鉄心（３） （８
）にも渦電流が発生するが、背面鉄心（２）にスリット
（２ａ） （２ａ）が穿設されている上に鉄心（８）
（８）にはスリット（３ａ） （３ａ）、（３ｂ）
（８ｂ）が形成されているため、それらの渦電流は抑制
され、この結果、当該円筒状リニア誘導モータの効率と
推力は、くさび状の電磁鋼板を積層して成る円筒状’Ｊ
ニア誘導モータのそれらとほぼ同一の大きさになる。In the device configured in this way, when an alternating current is passed through the coil (5) of the primary side stator (7), magnetic flux is generated in the iron core (8) (8) and eddy current is generated in the secondary side mover (8). flows, a thrust is generated, and the movable element (8) is moved in the longitudinal direction of the stator (7). In this case, when an alternating current is passed through the coil (5), the back iron core (2) and the iron core (3) (8
), but since slits (2a) (2a) are drilled in the back core (2) and the core (8)
(8) has slits (3a) (3a), (3b)
(8b), these eddy currents are suppressed, and as a result, the efficiency and thrust of the cylindrical linear induction motor are
The size is almost the same as that of a near induction motor.
なお、一次側固定子（７）を移動可能にするとともに二
次側可動子（８）を固定して一次側固定子（７）を移動
するようにしても同様の作用効果が得られる。また、実
施例では、背面鉄心（２）、鉄心（３）および可動子（
８）を断面円形状にしたが、楕円形状にしても同様の作
用効果が得られる。Note that similar effects can be obtained even if the primary stator (7) is made movable and the secondary movable element (8) is fixed while the primary stator (7) is moved. In addition, in the example, the back iron core (2), the iron core (3), and the mover (
8) has a circular cross section, but similar effects can be obtained even if the cross section is oval.
（効果）
以上の説明からも明らかなように本発明は、円筒状を成
すとともにそれの長手方向に延びるスリット （２ａ）
を穿設した背面鉄心（２）内に、ドーナツ状を成し、か
つ外周面と内周面に達するスリット（３ａ） （３ａ）
、（８ｂ） （ａｂ）を交互に形成した鉄心（３）と、
磁性体製の環状ディスタントピース（４）とを複数個交
互に並べて配設し、かつディスタントピース（４） （
４）にコイル（５） （５）を巻装して一次側固定子（
７）を構成するようにしたから、くさび形状の電磁鋼板
を用いることなく所要の円筒状一次側固定子を製造でき
る上に、その効率および推力を、くさび形状の電磁鋼板
による鉄心のものと同程度の大きさにすることができる
などの優れた効果を奏する。(Effects) As is clear from the above description, the present invention has a cylindrical shape and extends in the longitudinal direction of the slit (2a).
A slit (3a) forming a donut shape and reaching the outer circumferential surface and the inner circumferential surface is formed in the back core (2).
, (8b) and an iron core (3) in which (ab) are formed alternately;
A plurality of annular distant pieces (4) made of magnetic material are arranged alternately, and the distant pieces (4) (
4) is wound with the coil (5) (5) and the primary stator (
7), the required cylindrical primary stator can be manufactured without using wedge-shaped electromagnetic steel sheets, and its efficiency and thrust are the same as those of the core made of wedge-shaped electromagnetic steel sheets. It has excellent effects such as being able to reduce the size to a certain extent.
第１図は本発明の一実施例の一部断面正面図、第２図は
背面鉄心の断面図、第３図は鉄心の側面図である。
（２ａ） ： ス リ ノ ト（２）：背
面鉄心
（３）：鉄心
（３ａ）、（８ｂ）ニスリット
（４）：ディスクントピース
（５）：コイル
（７）ニー次側固定子
（８）二二次側可動子
早１ 図FIG. 1 is a partially sectional front view of an embodiment of the present invention, FIG. 2 is a sectional view of the back core, and FIG. 3 is a side view of the core. (2a): Slip note (2): Back core (3): Core (3a), (8b) Nislit (4): Discnt piece (5): Coil (7) Secondary side stator (8) Secondary side mover 1 Figure
Claims (1)
部にこれの長手方向へ延びるスリット（２ａ）を１個以
上穿設した軟鋼製の背面鉄心（２）内に、電磁鋼板を積
層して成る複数個のドーナツ状鉄心（３）（３）と、低
磁束密度で飽和する磁性体で成る複数個の環状ディスタ
ントピース（４）（４）とを交互に並べて装着し、前記
鉄心（３）にこれの半径方向に延びてこれの内周付近か
ら外周面に達する複数個のスリット（３ａ）（３ａ）と
該鉄心（３）の外周付近から内周面に達する複数個のス
リット（３ｂ）（３ｂ）とを交互に形成し、前記ディス
タントピース（４）（４）に交流電源に接続されたコイ
ル（５）を巻装しもって一次側固定子（７）を構成し、
前記鉄心（３）（３）およびディスタントピース（４）
（４）に、断面円形状または楕円形状を成す磁性体製の
二次側可動子（８）を前記一次側固定子（７）に対して
相対的に移動可能に貫装したことを特徴とする円筒状リ
ニア誘導モータ。Electromagnetic steel plates are laminated within a back core (2) made of mild steel, which has a cylindrical shape with a circular or elliptical cross-section and has one or more slits (2a) extending in the longitudinal direction of the body. A plurality of donut-shaped iron cores (3) (3) consisting of a plurality of toroidal cores (3) (3) and a plurality of annular distant pieces (4) (4) made of a magnetic material that saturates at a low magnetic flux density are alternately arranged and attached. ), a plurality of slits (3a) extending in the radial direction from near the inner circumference to the outer circumferential surface of the iron core (3), and a plurality of slits (3b) extending from near the outer circumference to the inner circumferential surface of the iron core (3). ) (3b) are formed alternately, and a coil (5) connected to an AC power source is wound around the distant pieces (4) (4) to constitute a primary stator (7),
The iron core (3) (3) and the distant piece (4)
(4) is characterized in that a secondary side mover (8) made of a magnetic material and having a circular or elliptical cross section is mounted so as to be movable relative to the primary side stator (7). Cylindrical linear induction motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1217388A JPH01190250A (en) | 1988-01-22 | 1988-01-22 | Cylindrical linear induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1217388A JPH01190250A (en) | 1988-01-22 | 1988-01-22 | Cylindrical linear induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01190250A true JPH01190250A (en) | 1989-07-31 |
Family
ID=11798039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1217388A Pending JPH01190250A (en) | 1988-01-22 | 1988-01-22 | Cylindrical linear induction motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01190250A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001063733A1 (en) * | 2000-02-25 | 2001-08-30 | Kabushiki Kaisha Yaskawa Denki | Canned linear motor |
| US6770988B2 (en) * | 1997-10-15 | 2004-08-03 | Advanced Motion Technologies Inc. | Linear electromagnetic machine |
| WO2008013053A1 (en) * | 2006-07-26 | 2008-01-31 | Kabushiki Kaisha Yaskawa Denki | Cylindrical linear motor armature, cylindrical linear motor field pole, and cylindrical linear motor using them |
| JP2008271753A (en) * | 2007-04-24 | 2008-11-06 | Yaskawa Electric Corp | Armature for cylindrical linear motor, and the cylindrical linear motor |
| JP2012205397A (en) * | 2011-03-25 | 2012-10-22 | Toyota Central R&D Labs Inc | Linear drive device and linear generator |
-
1988
- 1988-01-22 JP JP1217388A patent/JPH01190250A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6770988B2 (en) * | 1997-10-15 | 2004-08-03 | Advanced Motion Technologies Inc. | Linear electromagnetic machine |
| WO2001063733A1 (en) * | 2000-02-25 | 2001-08-30 | Kabushiki Kaisha Yaskawa Denki | Canned linear motor |
| US6731029B2 (en) | 2000-02-25 | 2004-05-04 | Kabushiki Kaisha Yaskawa Denki | Canned linear motor |
| WO2008013053A1 (en) * | 2006-07-26 | 2008-01-31 | Kabushiki Kaisha Yaskawa Denki | Cylindrical linear motor armature, cylindrical linear motor field pole, and cylindrical linear motor using them |
| JP4803252B2 (en) * | 2006-07-26 | 2011-10-26 | 株式会社安川電機 | Cylindrical linear motor and transfer device |
| US8093766B2 (en) | 2006-07-26 | 2012-01-10 | Kabushiki Kaisha Yaskawa Denki | Cylindrical linear motor armature, cylindrical linear motor field pole, and cylindrical linear motor using them |
| JP2008271753A (en) * | 2007-04-24 | 2008-11-06 | Yaskawa Electric Corp | Armature for cylindrical linear motor, and the cylindrical linear motor |
| JP2012205397A (en) * | 2011-03-25 | 2012-10-22 | Toyota Central R&D Labs Inc | Linear drive device and linear generator |
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