JPH0721102Y2 - Stepping motor - Google Patents
Stepping motorInfo
- Publication number
- JPH0721102Y2 JPH0721102Y2 JP1985202783U JP20278385U JPH0721102Y2 JP H0721102 Y2 JPH0721102 Y2 JP H0721102Y2 JP 1985202783 U JP1985202783 U JP 1985202783U JP 20278385 U JP20278385 U JP 20278385U JP H0721102 Y2 JPH0721102 Y2 JP H0721102Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic pole
- rotor
- stepping motor
- stator unit
- 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.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は、回転子の軸方向に平行な側部を備えた磁極
歯を有するステッピングモータに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a stepping motor having magnetic pole teeth having side portions parallel to the axial direction of a rotor.
第６図は、従来の２相励磁ステッピングモータの一例を
示す図、第７図は第６図に示す固定子ユニットＵと回転
子４の一部切欠展開図である。図において、Ｕは固定子
ユニットで、楔形の磁極歯ｔを間隙をもって噛み合わせ
た第１の磁極１、第２の磁極２と、第1,第２の磁極1,2
に捲回したコイル３により構成されている。４は回転子
で、周方向に永久磁石のＮ極,S極を交互に配設してい
る。５はブラケット,6はサイドブラケットである。FIG. 6 is a diagram showing an example of a conventional two-phase excitation stepping motor, and FIG. 7 is a partially cutaway development view of the stator unit U and the rotor 4 shown in FIG. In the figure, U is a stator unit, which includes a first magnetic pole 1, a second magnetic pole 2 in which wedge-shaped magnetic pole teeth t are meshed with a gap, and first and second magnetic poles 1, 2
It is composed of a coil 3 wound around. A rotor 4 has N and S poles of permanent magnets arranged alternately in the circumferential direction. 5 is a bracket and 6 is a side bracket.
従来の２相励磁ステッピングモータは、上記のように構
成されているから、ステッピングモータのコイルのイン
ダクタンス分と抵抗分とによる電流の立上りおよび磁極
の形状等によってダンピング特性は第８図に示すように
なり、速度−トルク特性は第９図に示すようになる。Since the conventional two-phase excitation stepping motor is configured as described above, the damping characteristic is as shown in FIG. 8 depending on the current rise due to the inductance and resistance of the coil of the stepping motor and the shape of the magnetic pole. Then, the speed-torque characteristic becomes as shown in FIG.
しかしながら、従来の２相励磁ステッピングモータにお
いて、ダンピング特性および速度−トルク特性は、上記
の特性が限界であり、これ以上の特性を得ることができ
ないので、近年のステッピングモータの要請に答えるこ
とができないという問題点があった。However, in the conventional two-phase excitation stepping motor, the damping characteristics and the speed-torque characteristics are limited to the above-mentioned characteristics, and it is not possible to obtain further characteristics, so that it is not possible to meet the demands of recent stepping motors. There was a problem.
この考案は、ダンピング特性および速度−トルク特性を
向上させることを目的としており、磁極歯を間隙をもっ
て噛み合わせた第１の磁極および第２の磁極にコイルを
捲回してなる固定子ユニットと、この固定子ユニットに
同軸的に挿通され、周方向に永久磁極のＮ極,S極を交互
に配設してなる回転子とより構成されたステッピングモ
ータにおいて、 前記磁極歯を回転子の軸方向に平行な側部を有する幅大
部と幅小部とから成る凸状に形成したことを特徴として
いる。The present invention aims to improve damping characteristics and speed-torque characteristics, and a stator unit formed by winding a coil around a first magnetic pole and a second magnetic pole in which magnetic pole teeth are engaged with each other with a gap, and In a stepping motor configured by a rotor that is coaxially inserted in a stator unit and in which N poles and S poles of permanent magnetic poles are alternately arranged in the circumferential direction, the magnetic pole teeth are arranged in an axial direction of the rotor. It is characterized in that it is formed in a convex shape composed of a large width portion having parallel side portions and a small width portion.
第１図はこの考案の一実施例を示す図、第２図は第１図
に示すステッピングモータの分解斜視図、第３図は第１
図に示す固定子ユニットと回転子の一部切欠展開図であ
る。図において、１〜６は第６図と同一部分を示す。Ｗ
は固定子ユニット、ｈは凸状の磁極歯で、回転子４の軸
方向に平行な側部を有する幅大部と幅小部とから成る凸
状に形成されている。尚、固定子ユニットＷは、凸状の
磁極歯ｈを間隙をもって噛み合わせた第１の磁極１、第
２の磁極２と、第1,第２の磁極1,2に捲回したコイル３
とより構成されている。FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of the stepping motor shown in FIG. 1, and FIG.
It is a partially cutaway development view of the stator unit and the rotor shown in the figure. In the figure, 1-6 shows the same part as FIG. W
Is a stator unit, and h is a magnetic pole tooth having a convex shape, and is formed in a convex shape composed of a large width portion and a small width portion having side portions parallel to the axial direction of the rotor 4. The stator unit W includes a first magnetic pole 1 and a second magnetic pole 2 in which convex magnetic pole teeth h are meshed with a gap, and a coil 3 wound around the first and second magnetic poles 1 and 2.
It is composed of
この実施例のステッピングモータは、磁気材料から成る
磁極歯ｈを凸状にするとともに（或る厚さの例えば鉄板
をカットおよび折曲げ加工するプレス工程で作成され
る）、その側部を回転子４の軸方向と平行にする構成に
した。In the stepping motor of this embodiment, the magnetic pole teeth h made of a magnetic material are made convex (made by a pressing process of cutting and bending an iron plate having a certain thickness, for example), and its side portion is made to be a rotor. It was configured to be parallel to the axial direction of No. 4.
第４図は、磁極歯と回転子との間の磁力線を示す図であ
る。（ａ）図は、磁極歯ｈと回転子４とがＸの位置にあ
る磁束分布を示す。（ａ）図の状態において、コイル３
を励磁しφ１，φ２がＳ極となるようにすると、磁束分
布は（ｂ）図のようになる。即ち磁極歯と回転子との間
には、満遍なく磁束が分布して磁力線曲がりを生ずる。
従って、磁力線は、まっすぐになろうとして磁気抵抗が
小さくなる方向に回転力を発生して（ｃ）図の位置に回
転子が矢印方向に歩進する。以下同様の作用を行なって
回転子が回転する。FIG. 4 is a diagram showing magnetic lines of force between the magnetic pole teeth and the rotor. FIG. 6A shows a magnetic flux distribution in which the magnetic pole teeth h and the rotor 4 are at the X position. In the state shown in FIG.
Is excited so that φ 1 and φ 2 are S poles, the magnetic flux distribution is as shown in FIG. That is, the magnetic flux is evenly distributed between the magnetic pole teeth and the rotor to cause the bending of the magnetic force line.
Therefore, the lines of magnetic force generate a rotational force in a direction in which the magnetic resistance becomes small while trying to be straight, and the rotor advances in the arrow direction to the position shown in FIG. Thereafter, the same operation is performed and the rotor rotates.
依って、磁力線の曲がった部分が周辺に数多く現れるほ
ど回転力が高くなる。しかして、この考案は、従来の楔
形磁極歯を凸状に形成したことにより同一空隙で表面積
が14％程度増加したので、従来に比して空隙における有
効磁束が多くなって磁極歯と回転子との間の空隙磁束密
度が大きくなり発生トルクを大きくすることができる。
この考案の試験の結果、（ステッピングモータの外径・
長さ・励磁等については従来と同様で磁極歯を凸状に形
成）速度−トルク特性が第９図に示すように、従来例よ
り10％程度向上する。Therefore, the more the curved portions of the lines of magnetic force appear around, the higher the rotational force becomes. In this device, however, the surface area of the same wedge-shaped magnetic pole tooth is increased by about 14% by forming the wedge-shaped magnetic pole tooth in a convex shape. The air gap magnetic flux density between and increases, and the generated torque can be increased.
As a result of the test of this device, the outer diameter of the stepping motor
With respect to length, excitation, etc., the magnetic pole teeth are formed in a convex shape as in the conventional case) The speed-torque characteristic is improved by about 10% as compared with the conventional example as shown in FIG.
また、第５図に示すように、セトリングタイムが1/2程
度になり、ダンピング特性が向上する。Further, as shown in FIG. 5, the settling time is reduced to about 1/2 and the damping characteristic is improved.
この考案は、磁極歯を回転子の軸方向に平行な側部を有
する幅大部と幅小部とから成る凸状に形成したから、速
度−トルク特性およびダンピング特性を向上させる実質
的な効果がある。In this invention, since the magnetic pole teeth are formed in a convex shape having a wide portion and a narrow portion having side portions parallel to the axial direction of the rotor, the substantial effect of improving the speed-torque characteristic and the damping characteristic is obtained. There is.
第１図は、この考案の一実施例を示す一部切欠斜視図、
第２図は、第１図に示すステッピングモータの分解斜視
図、第３図は、第１図に示す固定子ユニットと回転子の
一部切欠展開図、第４図は、磁極歯と回転子との間の磁
力線を示す図、第５図はダンピング特性図、第６図は従
来例を示す一部切欠斜視図、第７図は第６図に示す固定
子ユニットと回転子の一部切欠展開図、第８図はダンピ
ング特性図、第９図はこの考案と従来例の速度−トルク
特性図である。 図において、ｈ……磁極歯、１……第１の磁極、２……
第２の磁極、３……コイル、Ｗ……固定子ユニット、４
……回転子である。FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention,
2 is an exploded perspective view of the stepping motor shown in FIG. 1, FIG. 3 is a partially cutaway development view of the stator unit and the rotor shown in FIG. 1, and FIG. 4 is a magnetic pole tooth and a rotor. Fig. 5 is a diagram showing the lines of magnetic force between and, Fig. 5 is a damping characteristic diagram, Fig. 6 is a partially cutaway perspective view showing a conventional example, and Fig. 7 is a partially cutaway view of the stator unit and the rotor shown in Fig. 6. An exploded view, FIG. 8 is a damping characteristic diagram, and FIG. 9 is a speed-torque characteristic diagram of this device and the conventional example. In the figure, h ... magnetic pole teeth, 1 ... first magnetic pole, 2 ...
Second magnetic pole, 3 ... Coil, W ... Stator unit, 4
...... It is a rotor.
Claims (1)
磁極および第２の磁極にコイルを捲回してなる固定子ユ
ニットと、この固定子ユニットに同軸的に挿通され、周
方向に永久磁石のＮ極,S極を交互に配設してなる回転子
とより構成されたステッピングモータにおいて、 前記磁極歯を回転子の軸方向に平行な側部を有する幅大
部と幅小部とから成る凸状に形成したことを特徴とする
ステッピングモータ。1. A stator unit formed by winding a coil around a first magnetic pole and a second magnetic pole in which magnetic pole teeth are engaged with each other with a gap, and a permanent magnet which is coaxially inserted into the stator unit and circumferentially extends. In a stepping motor composed of a rotor in which N poles and S poles are alternately arranged, the magnetic pole teeth are composed of a large width portion and a small width portion having side portions parallel to the axial direction of the rotor. A stepping motor characterized by being formed in a convex shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985202783U JPH0721102Y2 (en) | 1985-12-27 | 1985-12-27 | Stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985202783U JPH0721102Y2 (en) | 1985-12-27 | 1985-12-27 | Stepping motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62111780U JPS62111780U (en) | 1987-07-16 |
| JPH0721102Y2 true JPH0721102Y2 (en) | 1995-05-15 |
Family
ID=31167488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985202783U Expired - Lifetime JPH0721102Y2 (en) | 1985-12-27 | 1985-12-27 | Stepping motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0721102Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5925570A (en) * | 1982-08-04 | 1984-02-09 | Asmo Co Ltd | Field pole of motor |
-
1985
- 1985-12-27 JP JP1985202783U patent/JPH0721102Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62111780U (en) | 1987-07-16 |
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