JPS591413Y2 - rotary solenoid - Google Patents

Description

【考案の詳細な説明】 本考案はあらかじめ設定された角度だけ往復回動するよ
うにしたロータリーソレノイドの改良に関するもので、
その目的とするところは漏洩磁束を極めて少くして回転
効率を向上すると共に、組み立ての作業性をよくして量
産に適するようにし、安価に製作せんとするものにある
。[Detailed description of the invention] This invention relates to an improvement of a rotary solenoid that rotates back and forth by a preset angle.
The purpose of this is to extremely reduce leakage magnetic flux to improve rotational efficiency, improve assembly workability, make it suitable for mass production, and manufacture it at low cost.

本出願人は先に第１図、第２図に示すように筒状のヨー
ク１の一端にフランジ７を固定し、次にリング３ａの内
面に１対の突部３ｂ、３Ｃを一体に形成したコアー３を
所定数重合してヨーク１内面に圧入してフランジ７内面
に当接し、次にコイル４をヨーク１内に嵌挿し、次に前
記同様のコア５を所定数重合してヨーク１内面に圧入し
、次いでローター６をコイル４内に挿入し、次にヨーク
１の他端にフランジ２を固定して組み立てるようにした
ロータリーソレノイド、又は第３図、第４図に示すよう
に筒体１０ ａの内方に同心に磁極部１０ｂを同心に配
設し、その上端と筒体１０ ａの上端とを一体にし、環
状の空間部１０ Ｃを形成した固定子１０を、コイル１
１の両面より嵌合し、螺子１２で一体とし、その中心に
同心にローター１３を挿入回転自在に支持するようにし
たロータリーソレノイドを考案したが、前者はコアー３
とヨーク１内面との接合面８，９にギャップを生じ、後
者は２つの固定子１０の筒体１０ａ下面当接面１４にギ
ャップを生じ、その部分の磁気抵抗が高くなり、又両者
とも磁束が固定子の磁極よりローターに移る時に９０’
方向が曲るので、その部分の磁気抵抗も高くなり漏洩磁
束が多く充分な磁束密度が得られないのでローターの回
転効率が悪く、又前者は複雑な構造を焼結金属で一体化
しているため材料的にコストアップになり、両者共固定
子の環状コイルと同心的にローター軸を配設しているの
で構造が複雑で組み立ての作業性が悪く、コストアップ
になるという欠点があった。The applicant first fixed the flange 7 to one end of the cylindrical yoke 1 as shown in FIGS. 1 and 2, and then integrally formed a pair of protrusions 3b and 3C on the inner surface of the ring 3a. A predetermined number of cores 3 are superimposed and press-fitted into the inner surface of the yoke 1 to abut the inner surface of the flange 7. Next, a coil 4 is inserted into the yoke 1, and then a predetermined number of cores 5 similar to those described above are superimposed to form the yoke 1. A rotary solenoid is assembled by press-fitting the inner surface, then inserting the rotor 6 into the coil 4, and then fixing the flange 2 to the other end of the yoke 1, or a cylindrical solenoid as shown in FIGS. 3 and 4. The stator 10 has a magnetic pole part 10b concentrically disposed inside the body 10a, and the upper end of the magnetic pole part 10b is integrated with the upper end of the cylindrical body 10a to form an annular space part 10C.
A rotary solenoid has been devised in which the rotor 13 is fitted from both sides of the core 1 and integrated with the screw 12, and the rotor 13 is inserted concentrically into the center of the rotor 13 and rotatably supported.
A gap is created between the joint surfaces 8 and 9 of the inner surface of the yoke 1, and the latter creates a gap between the lower contact surfaces 14 of the cylinders 10a of the two stators 10, and the magnetic resistance of that part increases, and the magnetic flux of both increases. 90' when moving from the magnetic poles of the stator to the rotor
Since the direction is bent, the magnetic resistance at that part is high, and there is a lot of leakage magnetic flux, and sufficient magnetic flux density cannot be obtained, resulting in poor rotor rotation efficiency.Also, the former has a complex structure integrated with sintered metal. This increases the cost of materials, and since both have a rotor shaft arranged concentrically with the annular coil of the stator, the structure is complicated and assembly workability is poor, leading to an increase in cost.

本考案は周知のパルスモータ−のように環状の固定子の
軸と同一方向にローターの軸を配設する際ローター軸を
固定子の軸と偏心させ、コイルはローターの一方の側に
のみ設けるようにして従来の欠点を除去するようにした
ものである。The present invention is similar to a well-known pulse motor in which the rotor axis is arranged in the same direction as the annular stator axis, and the rotor axis is eccentric to the stator axis, and the coil is provided only on one side of the rotor. In this way, the drawbacks of the conventional method are eliminated.

次に添附第５図、第６図、第７図に示した本考案の一実
施例について詳細に説明する。Next, one embodiment of the present invention shown in the attached FIGS. 5, 6, and 7 will be described in detail.

２０は磁性材からなるコアーを所定数重合固定した固定
子で、環体２０ ａの内面より中心に向けて１個の突部
２０ｂを形成し、該突部２０ ｂに対向した環体２０
ａの内面には円弧凹部を形成して磁極２０ Ｃとしであ
る。Reference numeral 20 denotes a stator in which a predetermined number of cores made of magnetic material are polymerized and fixed, and one protrusion 20b is formed from the inner surface of the annular body 20a toward the center, and the annular body 20 faces the protrusion 20b.
A circular concave portion is formed on the inner surface of the magnetic pole 20C.

そして突部２０ ｂにコイル２１を装着し、突部２０
ｂ先端の面を円弧状にした磁極２０ ｄとし、その上方
空隙部２２内に、環体２０ ａの中心軸と偏心して同軸
方向にローター２３を配設し、コイル２１は非通電時ロ
ーター２３の磁極２３ ａ 、２３ ｂが固定子２０の
磁極２０ ｄ及び２０ Ｃと回転方向に所定角θずらせ
て位置するようにローター軸２４にスプノング２５が張
設しである。Then, the coil 21 is attached to the protrusion 20 b, and the protrusion 20
A magnetic pole 20d has a tip end surface shaped like an arc, and a rotor 23 is disposed in the upper cavity 22 thereof in an eccentric and coaxial direction with respect to the central axis of the ring body 20a. A spun ring 25 is stretched around the rotor shaft 24 so that the magnetic poles 23 a and 23 b of the stator 20 are shifted by a predetermined angle θ in the rotational direction from the magnetic poles 20 d and 20 C of the stator 20 .

次に作用について説明する。Next, the effect will be explained.

コイル２１に通電すると突部２０ ｂ先端の磁極２０
ｄよりの磁束はローター２３の磁極２３ ａに真直に入
り他方の磁極２３ｂより固定子の磁極２０ Ｃに入り、
環体２０ ａを通って突部２０ ｂの磁極に至る閉磁路
を構成する。When the coil 21 is energized, the magnetic pole 20 at the tip of the protrusion 20b
The magnetic flux from d enters the magnetic pole 23a of the rotor 23 straightly, enters the magnetic pole 20C of the stator from the other magnetic pole 23b, and
A closed magnetic path is formed that passes through the ring body 20a and reaches the magnetic pole of the protrusion 20b.

従ってローター２３はスプリング２５の弾力に抗して第
７図の如くローター２３の磁極３３ ａ 、２３ ｂが
固定子２０の磁極２０ ｄ 、２０ Ｃと完全に対向す
る位置迄角度θだけ回転して停止する。Therefore, the rotor 23 resists the elasticity of the spring 25 and rotates by an angle θ until the magnetic poles 33a and 23b of the rotor 23 completely oppose the magnetic poles 20d and 20C of the stator 20, as shown in FIG. Stop.

コイル２１の通電を停止すると前記閉磁路はなくなり、
スプリング２５の弾力で第６図の元の位置に戻り停止す
る。When the coil 21 is de-energized, the closed magnetic path disappears,
Due to the elasticity of the spring 25, it returns to the original position shown in FIG. 6 and stops.

本考案によれば外で巻回した１個のコイルを固定子２０
の空隙部２２内に入れ、次いで突部２０ ｂ内に嵌合し
、次いでローター２３を空隙部２２内に挿入して組み立
てるので前述した従来のロータリーソレノイドに比較し
て組み立ての作業が極めて簡単となり、又固定子を環体
と突部を一体成形した同形のコアーを積層して継目、ギ
ャップ等をなしに一体成形できるので漏洩磁束がなく、
又ローターの磁極と固定子の磁極が真直に対向している
のでこの部分の磁気抵抗も少く、充分な磁束密度が得ら
れるのでローターの回転効率を著しく向上でき、アンペ
アターンを前述した従来品の２倍以上にすることができ
、又コイルも唯１個でよく、組み立ても容易で量産に適
しているので安価に製作できるという効果を有するもの
である。According to the present invention, one coil wound outside is connected to the stator 20.
The solenoid is inserted into the cavity 22 of the rotary solenoid, then fitted into the protrusion 20b, and then the rotor 23 is inserted into the cavity 22 and assembled, so the assembly work is extremely simple compared to the conventional rotary solenoid described above. Also, since the stator can be integrally formed by laminating cores of the same shape with annular bodies and protrusions molded together without any seams or gaps, there is no magnetic flux leakage.
In addition, since the rotor's magnetic poles and the stator's magnetic poles are directly opposed to each other, there is little magnetic resistance in this part, and sufficient magnetic flux density can be obtained, significantly improving the rotor's rotational efficiency, and the ampere turn is much lower than that of the conventional product mentioned above. It can be more than doubled in size, requires only one coil, is easy to assemble, is suitable for mass production, and can be manufactured at low cost.

なお突部の磁極以外の他の固定子の磁極は内方に幾分突
出させたり複数個にしても、コイルが突部に嵌合できる
ような空隙部が形成されていればどのようにしてもよい
。In addition, even if the magnetic poles of the stator other than the magnetic poles of the protrusion are made to protrude inward somewhat or are made in multiple numbers, how can it be done as long as a gap is formed so that the coil can fit into the protrusion? Good too.

なお、前述のスプリングはローター位置をθ°戻すため
のものであり、必らずしも第５図のように固定子の環体
２０ ａ上に固定せず、例えば本ロータリーソレノイド
の負荷側に配設されてもよく、スプリングで無くとも、
もとの位置に復元できるようになっていればどのような
手段でもよい。The above-mentioned spring is for returning the rotor position by θ°, and it is not necessarily fixed on the stator ring body 20a as shown in Fig. 5, but for example on the load side of this rotary solenoid. It may be arranged, and even if it is not a spring,
Any method is acceptable as long as it can be restored to its original position.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来品の第１比較例正断面図、第２図は第１図
のＡ−Ａ断面図、第３図は従来品の第２比較例正断面図
、第４図は第３図のＢ−Ｂ断面図、第５図は本考案の一
実施例斜視図、第６図は本考案の非作動時の正断面図、
第７図は本考案の作動時の正断面図である。 ２０・・・・・・固定子、２０ ａ・・・・・・環体、
２０ ｂ・・・・・・突部、２０Ｃ，２０ｄ・・・・・
・磁極、２１・・・・・・コイル、２２・・・・・・空
隙部、２３・・・・・・ローター、２３ ａ 、２３
ｂ・・・・・・磁極、２４・・・・・・ローター軸。Fig. 1 is a front sectional view of a first comparative example of a conventional product, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a front sectional view of a second comparative example of a conventional product, and Fig. 4 is a sectional view of a third comparative example of a conventional product. 5 is a perspective view of an embodiment of the present invention; FIG. 6 is a front sectional view of the present invention when it is not in operation;
FIG. 7 is a front sectional view of the present invention in operation. 20... Stator, 20 a... Ring body,
20 b...Protrusion, 20C, 20d...
・Magnetic pole, 21... Coil, 22... Gap, 23... Rotor, 23 a, 23
b...Magnetic pole, 24...Rotor shaft.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 環体の内面より中心に向けて１個の突部を形成し、全体
を磁性材で構成した固定子の前記突部にコイルを装着し
、突部先端の磁極上方空隙部内に環体の中心軸と偏心し
で同軸方向に磁性材からなるローターを回転自在に配設
し、該ローターの磁極を固定子の磁極に対して所定角度
回転方向にずらせて保持する如くしたロータリーソレノ
イド。A protrusion is formed from the inner surface of the annular body toward the center, and a coil is attached to the protrusion of a stator made entirely of magnetic material, and the center of the annular body is placed in the gap above the magnetic pole at the tip of the protrusion. A rotary solenoid in which a rotor made of a magnetic material is rotatably disposed eccentrically and coaxially with a shaft, and the magnetic poles of the rotor are held at a predetermined angle in the rotating direction with respect to the magnetic poles of a stator.