JPH0629388U - PM type stepping motor - Google Patents
PM type stepping motorInfo
- Publication number
- JPH0629388U JPH0629388U JP6242892U JP6242892U JPH0629388U JP H0629388 U JPH0629388 U JP H0629388U JP 6242892 U JP6242892 U JP 6242892U JP 6242892 U JP6242892 U JP 6242892U JP H0629388 U JPH0629388 U JP H0629388U
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- rotor
- yoke
- comb
- stepping motor
- 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.)
- Granted
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Abstract
(57)【要約】
【目的】 櫛歯状突極の内径と軸受の内径の同芯度のば
らつきを小さくし、櫛歯状突極とロ−タマグネットとの
エアギャップを小さくできる。
【構成】 一対の軸受で支持されるロ−タと、このロ−
タのロ−タマグネットとの間にエアギャップを設けると
ともに互い違いに入込む多数の櫛歯状突極が形成された
端部ヨ−ク部および中間ヨ−ク部を有するステ−タとを
備えたステッピングモ−タにおいて、軸受を前記端部ヨ
−ク部の櫛歯状突極の根元部内部に圧入して、軸受を櫛
歯状突極で直接位置決めした。
(57) [Abstract] [Purpose] It is possible to reduce the variation in the concentricity between the inner diameter of the comb tooth-shaped salient poles and the inner diameter of the bearing, and to reduce the air gap between the comb tooth-shaped salient poles and the rotor magnet. [Structure] A rotor supported by a pair of bearings, and this rotor
An air gap between the rotor magnet and the rotor magnet of the rotor, and a stator having an end yoke portion and an intermediate yoke portion formed with a large number of comb tooth-shaped salient poles that are inserted alternately. In the stepping motor, the bearing was press-fitted inside the root of the comb-teeth salient pole of the end yoke, and the bearing was directly positioned by the comb-teeth salient pole.
Description
【０００１】[0001]
この考案は、ＰＭ（パ−マネントマグネット）型のステッピングモ−タに関す る。 The present invention relates to a PM (permanent magnet) type stepping motor.
【０００２】[0002]
従来、ＰＭ型ステッピングモ−タの軸受周辺は、図４に示すように構成されて いる。同図中、１はモ−タフレ−ムのフレ−ム端板で、このフレ−ム端板１の中 央部には軸受圧入孔２が設けられている。またこのフレ−ム端板１には、端部ヨ −ク３が溶接等により固定されている。この端部ヨ−ク３の内側には多数の櫛歯 状突極３ａが形成されている。 Conventionally, the periphery of the bearing of a PM type stepping motor has been constructed as shown in FIG. In the figure, reference numeral 1 is a frame end plate of a motor frame, and a bearing press-fitting hole 2 is provided at a central portion of the frame end plate 1. An end yoke 3 is fixed to the frame end plate 1 by welding or the like. A large number of comb tooth-shaped salient poles 3a are formed inside the end yoke 3.
【０００３】 ４は軸受であり、ロ−タの回転軸（図示しない）を支持するようになっている 。この軸受４は、一端側が小径の挿入部４ａと他端側が大径のフランジ部４ｂと から成る。A bearing 4 supports a rotating shaft (not shown) of the rotor. The bearing 4 includes an insertion portion 4a having a small diameter at one end and a flange portion 4b having a large diameter at the other end.
【０００４】 このような構成の従来例における軸受の取付け過程を図５に基づいて説明する 。 軸受４の取付けを行う際には、まず軸受圧入孔２の中心と櫛歯状突極３ａ群 の内径中心の位置合わせを行い、フレ−ム端板１に端部ヨ−ク３を固定する。そ の後、軸受４の挿入部４ａをフレ−ム端板１の軸受圧入孔２へ圧入する。A process of mounting the bearing in the conventional example having such a configuration will be described with reference to FIG. When mounting the bearing 4, first, the center of the bearing press-fit hole 2 is aligned with the center of the inner diameter of the comb tooth-shaped salient poles 3a group, and the end yoke 3 is fixed to the frame end plate 1. . After that, the insertion portion 4a of the bearing 4 is press-fitted into the bearing press-fitting hole 2 of the frame end plate 1.
【０００５】[0005]
しかし、従来はフレ−ム端板１の軸受圧入孔２に圧入される軸受圧入孔２に対 する端部とヨ−ク３の櫛歯状突極３ａの内径中心の位置合わせ精度のばらつき、 および軸受４の挿入部４ａの外径に対する軸受４の中心孔４ｃの位置精度のばら つきがあるので、端部ヨ−ク３の櫛歯状突極３ａの内径中心と軸受中心とに誤差 が発生しやすい。すなわち櫛歯状突極３ａと軸受４との芯出しを精度よくできず 、ロ−タとステ−タとのエアギャップをより小さくできないという問題があった 。 However, conventionally, there is a variation in the alignment accuracy between the end of the frame end plate 1 that is press-fitted into the bearing press-fitting hole 2 and the inner diameter center of the comb tooth-shaped salient pole 3a of the yoke 3, Since there is a variation in the positional accuracy of the central hole 4c of the bearing 4 with respect to the outer diameter of the insertion portion 4a of the bearing 4, there is an error between the center of the inner diameter of the salient toothed pole 3a of the comb teeth of the end yoke 3 and the center of the bearing. Likely to happen. That is, there is a problem that the comb tooth-shaped salient pole 3a and the bearing 4 cannot be accurately centered, and the air gap between the rotor and the stator cannot be made smaller.
【０００６】 そこで、本考案は軸受とヨ−クの櫛歯状突極との芯出し精度を向上できるＰＭ 型ステッピングモ−タを提供しようとするものである。Therefore, the present invention is intended to provide a PM type stepping motor capable of improving the centering accuracy of the bearing and the comb tooth-shaped salient pole of the yoke.
【０００７】[0007]
この考案は、前記目的を達成するために、外周にロ−タマグネットを設けると ともに中心部を回転軸に固定したロ−タと、このロ−タの外周面に対向して配置 される多数の櫛歯状突極を持つヨ−クおよびこのヨ−クに巻線を装着した複数の ステ−タと、ロ−タの回転軸をその両端部で支持する一対の軸受とを備えるＰＭ 型ステッピングモ−タにおいて、各軸受を、各ステ−タのヨ−クのうち最外部に 配置されたヨ−クの櫛歯状突極の根元部内側に圧入固定したものである。 In order to achieve the above object, the present invention provides a rotor having a rotor magnet on its outer periphery and a central portion fixed to a rotating shaft, and a large number of rotors arranged to face the outer peripheral surface of the rotor. PM-type with a yoke having comb-shaped salient poles, a plurality of stators having windings attached to the yoke, and a pair of bearings for supporting the rotating shaft of the rotor at both ends thereof. In a stepping motor, each bearing is press-fitted and fixed inside the root of the comb-teeth-shaped salient pole of the yoke located at the outermost of the yokes of each stator.
【０００８】[0008]
このような構成の本考案においては、軸受を取付ける際に、各ステ−タのヨ− クのうち最外部に配置されたヨ−クの櫛歯状突極の根元部の内側に軸受を圧入す る。これによりヨ−クの櫛歯状突極と軸受の内径中心を直接位置合わせして、ヨ −クの櫛歯状突極と軸受との芯出しを行う。 In the present invention having such a structure, when mounting the bearing, the bearing is press-fitted inside the root of the comb-teeth-shaped salient pole of the yoke located at the outermost of the yokes of each stator. Suru As a result, the comb tooth-shaped salient poles of the yoke and the inner diameter center of the bearing are directly aligned to center the comb-teeth salient poles of the yoke and the bearing.
【０００９】[0009]
以下、図を参照して本考案の一実施例を説明する。 An embodiment of the present invention will be described below with reference to the drawings.
【００１０】 図３はＰＭ型のステッピングモ−タの全体構成を示すもので、このステッピン グモ−タは一対のステ−タ１１、１６を設けている。一方のステ−タ１１は、巻 き枠１２を有しており、この巻き枠１２には巻線１３が巻き付けられている。こ のステ−タ１１は巻き枠１２に端部ヨ−ク１４および中間ヨ−ク１５とを嵌合し て形成されている。FIG. 3 shows the overall structure of a PM type stepping motor. This stepping motor is provided with a pair of stators 11 and 16. One of the stators 11 has a winding frame 12, and a winding 13 is wound around the winding frame 12. The stator 11 is formed by fitting the end yoke 14 and the intermediate yoke 15 to the reel 12.
【００１１】 上記端部ヨ−ク１４および中間ヨ−ク１５の内側にはそれぞれ、上記巻き枠１ ３の胴部内面に沿って互い違いに入込む多数の櫛歯状突極１４ａ、１５ａが設け られている。また、上記端部ヨ−ク１４の外側は、櫛歯状突極１４ａと同じ方向 に折曲げられて外周フレ−ム部１４ｂを形成している。そして、この外周フレ− ム部１４ｂの内側に上記巻線１２および巻き枠１３が収納されている。Inside the end yoke 14 and the intermediate yoke 15, a large number of comb tooth-shaped salient poles 14 a, 15 a are provided which are alternately inserted along the inner surface of the body of the winding frame 13. Has been. The outer side of the end yoke 14 is bent in the same direction as the comb tooth-shaped salient pole 14a to form an outer peripheral frame portion 14b. The winding 12 and the winding frame 13 are housed inside the outer peripheral frame portion 14b.
【００１２】 また、他方のステ−タ１６も、一方のステ−タ１１と同様の構成を成している 。すなわち、ステ−タ１６は巻き枠１７を有しており、この巻き枠１７には巻線 １８が巻き付けられている。このステ−タ１６は巻き枠１７に端部ヨ−ク１９お よび中間ヨ−ク２０とを嵌合して形成されている。The other stator 16 also has the same structure as the one stator 11. That is, the stator 16 has a winding frame 17, and a winding 18 is wound around the winding frame 17. The stator 16 is formed by fitting an end yoke 19 and an intermediate yoke 20 to a winding frame 17.
【００１３】 上記端部ヨ−ク１９および中間ヨ−ク２０の内側にはそれぞれ、上記巻き枠１ ７の胴部内面に沿って互い違いに入込む多数の櫛歯状突極１９ａ、２０ａが設け られている。また、上記端部ヨ−ク１９の外側は、櫛歯状突極１９ａと同じ方向 に折曲げられて外周フレ−ム部１９ｂを形成している。そして、この外周フレ− ム部１９ｂの内側に上記巻線１７および巻き枠１８が収納できるようになってい る。Inside the end yoke 19 and the intermediate yoke 20, a large number of comb tooth-shaped salient poles 19a, 20a are provided which are staggered along the inner surface of the body of the winding frame 17 respectively. Has been. The outer side of the end yoke 19 is bent in the same direction as the comb tooth-shaped salient pole 19a to form an outer peripheral frame portion 19b. The winding 17 and the winding frame 18 can be housed inside the outer peripheral frame portion 19b.
【００１４】 これら２組のステ−タ１１、１６の中間ヨ−ク１５、２０側は互いに重ね合わ され、かつ端部ヨ−ク１４、１９の端面には円板状のフレ−ム端板２１、２２が 溶接等によって固着されている。このフレ−ム端板２１、２２にはモ−タ全体を 外部に取付けるための孔（図示しない）が設けられている。そして、フレ−ム端 板２１、２２と外周フレ−ム部１４ｂ、１９ｂとはモ−タフレ−ムを成している 。 上記端部ヨ−ク１４、１９の外周フレ−ム部１４ｂ、１９ｂには相対向する 切欠部２３、２４が設けられ、この切欠部２３、２４を介して上記各巻線１２、 １９に接続されたリ−ド線２５、２６が外部に引出されている。The intermediate yokes 15 and 20 sides of these two sets of stators 11 and 16 are superposed on each other, and the end faces of the end yokes 14 and 19 have disk-shaped frame end plates 21. , 22 are fixed by welding or the like. The frame end plates 21 and 22 are provided with holes (not shown) for attaching the entire motor to the outside. The frame end plates 21 and 22 and the outer peripheral frame portions 14b and 19b form a motor frame. Outer peripheral frame portions 14b and 19b of the end yokes 14 and 19 are provided with opposed cutout portions 23 and 24, and are connected to the windings 12 and 19 through the cutout portions 23 and 24, respectively. Lead wires 25 and 26 are drawn to the outside.
【００１５】 上記一対のステ−タ１１、１６の内側にはロ−タ２９が配設されており、この ロ−タ２９の外周には、リング形をなす一対のロ−タマグネット３０ａ、３０ｂ が設けられ、またロ−タ２９の中心部を貫通して金属製の回転軸３１が配置され ている。A rotor 29 is provided inside the pair of stators 11 and 16, and a pair of ring-shaped rotor magnets 30a and 30b are formed on the outer periphery of the rotor 29. Is provided, and a rotating shaft 31 made of metal is arranged so as to penetrate through the central portion of the rotor 29.
【００１６】 上記ロ−タマグネット３０ａ、３０ｂは、その軸方向に沿うＳ極とＮ極とが交 互に周方向に沿って多数着磁されている。これらロ−タマグネット３０ａ、３０ ｂは、例えば鉄・ネオジェ−ム・ボロン系、または鉄・プラセオジェ−ム・ボロ ン系などの磁石材料から形成されている。また、これらロ−タマグネット３０ａ 、３０ｂの外周面は、上記ステ−タ１１、１６の内周面にエアギャップ３１を介 してそれぞれ対向配置されている。The rotor magnets 30a and 30b have a plurality of S poles and N poles along the axial direction alternately magnetized along the circumferential direction. The rotor magnets 30a and 30b are made of a magnetic material such as iron / neodymium / boron system or iron / praseogeme / boron system. The outer peripheral surfaces of the rotor magnets 30a and 30b are arranged to face the inner peripheral surfaces of the stators 11 and 16 with an air gap 31 therebetween.
【００１７】 上記一方のステ−タ１１のフレ−ム端板２１の中央部には図１に示すように軸 受挿入孔３５が設けられている。この端板２１に溶接止めされた上記端部ヨ−ク １４は、その溶接の際に治具を用いて、櫛歯状突極１９ａ群の内部中心と軸受挿 入孔３５の中心とが一致するようにしてフレ−ム端板に固定されている。As shown in FIG. 1, a bearing insertion hole 35 is provided at the center of the frame end plate 21 of the one stator 11. In the end yoke 14 welded to the end plate 21, the inner center of the group of comb-shaped salient poles 19a and the center of the bearing insertion hole 35 are aligned by using a jig during welding. And is fixed to the frame end plate.
【００１８】 またフレ−ム端板２１に固定される軸受４１は、すべり軸受であって、挿入部 ４１ａと、この挿入部４１ａの一端に形成された環状のフランジ部４１ｂとから 成る。この軸受４１はそのフランジ部４１ｂを上記端部ヨ−ク１４の櫛歯状突極 １４ａの根元部の内側に圧入して固定されており、軸受４１の挿入部４１ａは上 記フレ−ム端板２１の軸受挿入孔３５に挿通されている。The bearing 41 fixed to the frame end plate 21 is a slide bearing, and includes an insertion portion 41a and an annular flange portion 41b formed at one end of the insertion portion 41a. The flange 41b of the bearing 41 is press-fitted inside the base of the comb-teeth salient pole 14a of the end yoke 14, and the insert 41a of the bearing 41 is fixed to the frame end. It is inserted into the bearing insertion hole 35 of the plate 21.
【００１９】 また上記他方のステ−タ１６に溶接止めされたフレ−ム端板２２にも上記と同 様の軸受挿入孔が設けられているとともに、上記と同様な構成の軸受４２が端板 ヨ−ク１９の櫛歯状突極１９ａの根元部内部に圧入固定して設けられている。な お、その詳細については軸受４１の場合と同じであるので省略する。そしてこれ ら軸受４１、４２には、上記ロ−タ２９の回転軸３１が回転自在に取付けられて いる。The frame end plate 22 welded to the other stator 16 is also provided with a bearing insertion hole similar to the above, and a bearing 42 having the same structure as the above is also installed. It is provided by being press-fitted and fixed inside the root portion of the comb tooth-shaped salient pole 19a of the yoke 19. The details are the same as in the case of the bearing 41, and will be omitted. The rotary shaft 31 of the rotor 29 is rotatably attached to the bearings 41 and 42.
【００２０】 このような構成において軸受４１、４２の取付けを軸受４１で代表して説明す る。すなわち、上記軸受４１を取付ける際に、図２中矢印に示すように軸受４１ を挿入して、そのフランジ部４１ｂを上記端部ヨ−ク部１４の櫛歯状突極１４ａ の根元部内側に圧入するとともに挿入部４１ａを軸受挿入孔３５に挿通させる。The mounting of the bearings 41, 42 in such a configuration will be described by using the bearing 41 as a representative. That is, when the bearing 41 is mounted, the bearing 41 is inserted as shown by the arrow in FIG. 2, and the flange portion 41b is located inside the root portion of the comb-shaped salient pole 14a of the end yoke portion 14. While press-fitting, the insertion portion 41a is inserted into the bearing insertion hole 35.
【００２１】 この圧入は、フランジ部４１ｂの挿入側の面４１ｃがフレ−ム端板２１の軸受 挿入部３５の孔縁に当たるまで行われる。このような圧入により軸受４１が固定 されるとともに、この固定に伴い軸受挿入孔３５は軸受４１の挿入部４１ａ内径 より大きく形成されているため、軸受挿入孔３５と軸受４１の挿入部４１ａの間 には図２に示す空隙４３（図１参照）が生じる。This press-fitting is performed until the insertion side surface 41 c of the flange portion 41 b comes into contact with the hole edge of the bearing insertion portion 35 of the frame end plate 21. Since the bearing 41 is fixed by such press-fitting and the bearing insertion hole 35 is formed larger than the inner diameter of the insertion portion 41a of the bearing 41 due to this fixation, a gap between the bearing insertion hole 35 and the insertion portion 41a of the bearing 41 is formed. A void 43 (see FIG. 1) shown in FIG.
【００２２】 このように本実施例では、軸受４１を端部ヨ−ク１４の櫛歯状突極１４ａ内に 圧入して、端部ヨ−ク１４の櫛歯状突極１４ａと軸受４１の内径中心を直接位置 合わせできる。そのため、端部ヨ−ク１４の櫛歯状突極１４ａを基準に軸受４１ が位置決めされ、芯出し精度のばらつきを軸受４１のフランジ部４１ａの外径に 対する中心孔４１ｄの精度に依存させることができ、よって軸受４１と端部ヨ− ク１４の櫛歯状突極１４ａとの芯出し精度を向上できる。したがってエアギャッ プを狭くして、モ−タ性能を向上できる。As described above, in the present embodiment, the bearing 41 is press-fitted into the comb-teeth salient pole 14 a of the end yoke 14, and the comb-teeth salient pole 14 a of the end yoke 14 and the bearing 41 are inserted. The inner diameter center can be directly aligned. Therefore, the bearing 41 is positioned with the comb tooth-shaped salient pole 14a of the end yoke 14 as a reference, and the dispersion of the centering accuracy depends on the accuracy of the center hole 41d with respect to the outer diameter of the flange 41a of the bearing 41. Therefore, the centering accuracy of the bearing 41 and the comb-shaped salient pole 14a of the end yoke 14 can be improved. Therefore, the air gap can be narrowed to improve the motor performance.
【００２３】 また、軸受４１を端部ヨ−ク部１４の櫛歯状突極１４ａの根元部内側に圧入す ることから、この軸受４１が櫛歯状突極１４ａのロ−タマグネット３０ａに対す る磁気的な有効範囲を損なうことがなく軸受４１を取付けることができ、モ−タ 自体の性能が低下することはない。Further, since the bearing 41 is press-fitted inside the base of the comb tooth-shaped salient pole 14a of the end yoke portion 14, this bearing 41 is attached to the rotor magnet 30a of the comb tooth-shaped salient pole 14a. The bearing 41 can be mounted without impairing the magnetic effective range, and the performance of the motor itself does not deteriorate.
【００２４】[0024]
以上詳述したように本考案によれば、軸受をヨ−クの櫛歯状突極で直接位置決 めして、軸受とヨ−クの櫛歯状突極との芯出し精度を向上できるものである。 As described in detail above, according to the present invention, the bearing can be directly positioned by the comb-shaped salient poles of the yoke to improve the centering accuracy between the bearing and the comb-shaped salient poles of the yoke. Is.
【図１】本考案の実施例にかかるＰＭ型ステッピングモ
−タの軸受部周辺の構成を示す断面図。FIG. 1 is a cross-sectional view showing a configuration around a bearing portion of a PM type stepping motor according to an embodiment of the present invention.
【図２】本実施例にかかるＰＭ型ステッピングモ−タの
軸受を取付ける際の説明図。FIG. 2 is an explanatory view when mounting the bearing of the PM type stepping motor according to the present embodiment.
【図３】本実施例にかかるＰＭ型ステッピングモ−タの
全体の構成を一部切断して示す側面図。FIG. 3 is a side view showing a part of the entire structure of the PM type stepping motor according to this embodiment.
【図４】本考案の従来例にかかるＰＭ型ステッピングモ
−タの軸受部周辺の構成を示す断面図。FIG. 4 is a cross-sectional view showing a structure around a bearing portion of a PM type stepping motor according to a conventional example of the present invention.
【図５】本考案の従来例にかかるＰＭ型ステッピングモ
−タの軸受を取付ける際の説明図。FIG. 5 is an explanatory view of mounting a PM type stepping motor bearing according to a conventional example of the present invention.
１４…端部ヨ−ク、２１…フレ−ム端板、３５…軸受挿
入孔、４１…軸受。Reference numeral 14 ... End yoke, 21 ... Frame end plate, 35 ... Bearing insertion hole, 41 ... Bearing.
Claims (1)
に中心部を回転軸に固定したロ−タと、このロ−タの外
周面に対向して配置される多数の櫛歯状突極を持つヨ−
クおよびこのヨ−クに巻線を装着した複数のステ−タ
と、前記ロ−タの回転軸をその両端部で支持する一対の
軸受とを備えるＰＭ型ステッピングモ−タにおいて、前
記各軸受を、前記各ステ−タのヨ−クのうち最外部に配
置されたヨ−クの櫛歯状突極の根元部内側に圧入固定し
たことを特徴とするＰＭ型ステッピングモ−タ。1. A rotor having an outer circumference provided with a rotor magnet and a central portion fixed to a rotating shaft, and a large number of comb tooth-shaped salient poles arranged to face the outer circumferential surface of the rotor. Yo
In a PM type stepping motor comprising a crank and a plurality of stators having windings mounted on the yoke, and a pair of bearings supporting the rotary shaft of the rotor at both ends thereof, each of the bearings is A PM type stepping motor characterized by being press-fitted and fixed to the inside of the base of the comb-teeth-shaped salient pole of the yoke located at the outermost of the yokes of the respective stators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992062428U JP2573894Y2 (en) | 1992-09-04 | 1992-09-04 | PM type stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992062428U JP2573894Y2 (en) | 1992-09-04 | 1992-09-04 | PM type stepping motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0629388U true JPH0629388U (en) | 1994-04-15 |
| JP2573894Y2 JP2573894Y2 (en) | 1998-06-04 |
Family
ID=13199891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992062428U Expired - Fee Related JP2573894Y2 (en) | 1992-09-04 | 1992-09-04 | PM type stepping motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2573894Y2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006320188A (en) * | 2005-04-12 | 2006-11-24 | Nidec Sankyo Corp | Stepping motor |
| JP2007020347A (en) * | 2005-07-08 | 2007-01-25 | Nidec Sankyo Corp | Motor |
| JP2010288385A (en) * | 2009-06-12 | 2010-12-24 | Minebea Co Ltd | Stepping motor |
| US8304955B2 (en) | 2007-06-21 | 2012-11-06 | Minebea Co., Ltd. | PM stepping motor having a stator assembly |
| WO2014061156A1 (en) * | 2012-10-19 | 2014-04-24 | 三菱電機株式会社 | Electric motor and manufacturing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4877604U (en) * | 1972-12-24 | 1973-09-25 | ||
| JPS6096967U (en) * | 1983-12-08 | 1985-07-02 | 松下電器産業株式会社 | Bearing support device for stepping motor |
| JPS6310778U (en) * | 1986-07-08 | 1988-01-23 | ||
| JPS642577U (en) * | 1987-06-24 | 1989-01-09 |
-
1992
- 1992-09-04 JP JP1992062428U patent/JP2573894Y2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4877604U (en) * | 1972-12-24 | 1973-09-25 | ||
| JPS6096967U (en) * | 1983-12-08 | 1985-07-02 | 松下電器産業株式会社 | Bearing support device for stepping motor |
| JPS6310778U (en) * | 1986-07-08 | 1988-01-23 | ||
| JPS642577U (en) * | 1987-06-24 | 1989-01-09 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006320188A (en) * | 2005-04-12 | 2006-11-24 | Nidec Sankyo Corp | Stepping motor |
| JP2007020347A (en) * | 2005-07-08 | 2007-01-25 | Nidec Sankyo Corp | Motor |
| JP4592519B2 (en) * | 2005-07-08 | 2010-12-01 | 日本電産サンキョー株式会社 | motor |
| US8304955B2 (en) | 2007-06-21 | 2012-11-06 | Minebea Co., Ltd. | PM stepping motor having a stator assembly |
| JP2010288385A (en) * | 2009-06-12 | 2010-12-24 | Minebea Co Ltd | Stepping motor |
| WO2014061156A1 (en) * | 2012-10-19 | 2014-04-24 | 三菱電機株式会社 | Electric motor and manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2573894Y2 (en) | 1998-06-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |