JPS6176059A - Step motor - Google Patents
Step motorInfo
- Publication number
- JPS6176059A JPS6176059A JP19702884A JP19702884A JPS6176059A JP S6176059 A JPS6176059 A JP S6176059A JP 19702884 A JP19702884 A JP 19702884A JP 19702884 A JP19702884 A JP 19702884A JP S6176059 A JPS6176059 A JP S6176059A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic pole
- pole teeth
- intermediate plate
- coil
- rotor
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
- H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
- H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
- H02K37/14—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Shutters For Cameras (AREA)
Abstract
Description
【発明の詳細な説明】 〔技術分野〕 この発明は、ステップ電動機に関するものである。[Detailed description of the invention] 〔Technical field〕 The present invention relates to a step motor.
従来、一般に100極ないし200極のステップ電動…
は第10図のような構造になっていた。すなわち、その
固定子極が突極50となっており、この各突極50にコ
イ1v51を巻いたものである。Conventionally, step motors generally have 100 to 200 poles...
The structure was as shown in Figure 10. That is, the stator poles are salient poles 50, and each salient pole 50 is wound with a coil 1v51.
しη為し、コイlし51をまくスペースが突極50間の
溝52であるため非常に巻きにぐ〈加工費が高くなって
いた。仮にコイル51は別に巻いたものを嵌めるとして
も第10図の例では8個のコイ〃51を要するという欠
点があった。However, since the space in which the coil 51 is wound is the groove 52 between the salient poles 50, it is very difficult to wind the coil and the processing cost is high. Even if separately wound coils 51 were to be fitted, the example shown in FIG. 10 had the disadvantage that eight coils 51 were required.
この発明の目的は、100極以上の極数を有するととも
にコイル等の部品点数を削減し構造および組立が簡単で
安価にすることができるステップ電動機を提供すること
である。An object of the present invention is to provide a step motor which has a number of poles of 100 or more, reduces the number of parts such as coils, and is simple in structure and assembly and can be made at low cost.
この発明のステップ電動機は、第1の発明として、同軸
上に並列した第1および第2のコイMと、この第1およ
び第2のコイルの間に介在さ八て前記第1および第2の
コイルの内周側で軸方向の両方向に延出する所定数の磁
極子を有しさらにその表面に所定数の磁極歯を形成した
中間板と、前記第1および第2のコイルの軸方向の外側
にそnぞn設けられて各コイルの内周側で軸方向の中間
板側に延出するとともに前記中間板の磁極子の間に位置
する磁極子を有しさらにその表面に所定数の磁極歯を形
成した一対のヨークと、前記コイMの中心軸上に配置さ
れて外周に前記磁極歯に対向する磁極を形成した回転子
とを備え、前記第1のコイルにおける前記中間板および
ヨークの磁極歯およびこれらに層間する回転子の磁極の
組と、前記第2のコイMにおける前記中間板およびβ−
りの磁極歯およびこれらに対向する回転子の磁極の組と
が相互に所定の電気角度回転方向にずnるよりにしたも
のである。また、第2の発明として、同軸上に並列した
第1および第2のコイルと、この第1および第2のコイ
lしの間に介在’Jflで前記第1および第2のコイル
の内周側で軸方向の両方向に延出する所定数の磁極子を
有しさらにその表面に所定数の磁極歯を形成した中間板
と、前記第1および第2のコイIしの軸方向の外側にそ
nぞn設けらnて各コイルの内周側で軸方向の中間板側
に延出するとともに前記中間板の磁極子の間に位置する
磁極子を有しさらにその表面に所定数の磁極歯を形成し
た一対のヨークと、前記コイルの中心軸上に配置さ几て
ろ方向に7ii1ri1されるとともに外周に前記磁極
歯に対向する磁極歯を形成した永久磁石を有する回転子
とを備え、前記第1のコイルにおける前記中間板および
ヨークの磁極歯およびこれらに対向する回転子の磁極歯
の組と、前記第2のコイルにおける前記中間板およびヨ
ークの磁極歯およびこれらに対向する回転子の磁極歯の
組とが相互に所定の電気角度回転方向に、ずれるように
したものである。すなわち、第16発明において、中間
板およびヨークの磁極子に磁極歯を形成するため100
極以上の超多極化が可能になり、しかも従来に比して部
品点数の削減、構造および組立の簡単化が図n、小形化
およびコスト安にすることができる。第2の発明におい
て、永久磁石を径方向に着磁するとともに外表面に磁極
歯を形成したためさらに永久磁石の構造が簡単になる。The step motor of the present invention, as a first invention, includes first and second coils M coaxially arranged in parallel, and a step motor interposed between the first and second coils. an intermediate plate having a predetermined number of magnetic pole pieces extending in both axial directions on the inner peripheral side of the coil and further having a predetermined number of magnetic pole teeth formed on its surface; A magnetic pole piece is provided on the outside and extends toward the intermediate plate in the axial direction on the inner peripheral side of each coil, and is located between the magnetic pole pieces of the intermediate plate. a pair of yokes formed with magnetic pole teeth, and a rotor disposed on the central axis of the coil M and formed with magnetic poles facing the magnetic pole teeth on the outer periphery, the intermediate plate and the yoke in the first coil; magnetic pole teeth and a set of rotor magnetic poles interlayered therewith, the intermediate plate in the second coil M, and β-
The magnetic pole teeth of the rotor and the set of magnetic poles of the rotor opposing these teeth are offset from each other by a predetermined electrical angle in the direction of rotation. Further, as a second invention, the first and second coils are arranged in parallel on the same axis, and the inner periphery of the first and second coils is interposed between the first and second coils. an intermediate plate having a predetermined number of magnetic pole pieces extending in both axial directions on the sides thereof and further having a predetermined number of magnetic pole teeth formed on its surface; A magnetic pole piece is provided on the inner peripheral side of each coil and extends toward the intermediate plate in the axial direction, and is located between the magnetic pole pieces of the intermediate plate, and further has a predetermined number of magnetic poles on the surface thereof. A rotor comprising a pair of yokes formed with teeth, and a rotor having a permanent magnet arranged on the central axis of the coil and oriented in the rotary direction and formed with magnetic pole teeth opposite to the magnetic pole teeth on the outer periphery, A set of magnetic pole teeth of the intermediate plate and yoke in the first coil and magnetic pole teeth of the rotor opposing them; and a set of magnetic pole teeth of the intermediate plate and yoke in the second coil and magnetic poles of the rotor opposing them. The sets of teeth are shifted from each other in a predetermined electrical angle rotational direction. That is, in the sixteenth invention, in order to form magnetic pole teeth on the magnetic pole pieces of the intermediate plate and the yoke,
This makes it possible to have a very large number of poles, and also to reduce the number of parts, simplify the structure and assembly, and reduce the size and cost compared to the conventional method. In the second invention, since the permanent magnet is magnetized in the radial direction and magnetic pole teeth are formed on the outer surface, the structure of the permanent magnet is further simplified.
この発明の一実施例を第1図ないし第9図に基づいて説
明する。図において、固定子1はケースを兼ねるカップ
状の固定子ヨーク2,3、一対のコイM枠4,5に保持
さnたコイA/6,7、中間板8、軸受9からなり、回
転子10は永久磁石11a。An embodiment of the present invention will be described based on FIGS. 1 to 9. In the figure, a stator 1 consists of cup-shaped stator yokes 2 and 3 that also serve as a case, coils A/6 and 7 held in a pair of coil M frames 4 and 5, an intermediate plate 8, and a bearing 9, and rotates. The child 10 is a permanent magnet 11a.
11b、軸12.磁石保持具13からなる。固定子1の
固定子ヨーク2.3は略同−形状に形成さ1〜いずれも
底板の中央に複数の磁極子14.15を円筒状に切起し
、その内周側に磁極歯14” + 15”を形成し、ま
た開口縁の均等4箇所に所定深さでそnぞn係止切欠1
6を形成し、ヨーク3の中心に軸受固定孔17を形成し
ている。中間板8は磁性体で円板形に形成さn、第3図
および第4図のように外周の均等4箇所に係止突起18
を形成し、中央部に前記磁極子14.15と同数の磁極
子19゜20を等間隔で表裏2方同にそnぞn切起し、
かつその内局面に磁極歯148 e 15aと同じ磁極
歯19a。11b, axis 12. It consists of a magnet holder 13. The stator yoke 2.3 of the stator 1 is formed in approximately the same shape, and a plurality of magnetic pole pieces 14.15 are cut and raised in the center of the bottom plate in a cylindrical shape, and magnetic pole teeth 14'' are provided on the inner circumferential side of the stator yoke 2.3 of the stator 1. + 15", and locking notches 1 are provided at four equal locations on the edge of the opening at a predetermined depth.
6, and a bearing fixing hole 17 is formed in the center of the yoke 3. The intermediate plate 8 is made of a magnetic material and is formed into a disk shape, and has locking protrusions 18 at four equal locations on the outer periphery as shown in FIGS. 3 and 4.
, and in the center part, the same number of magnetic pole elements 19.20 as the magnetic pole elements 14 and 15 are cut and raised at equal intervals on both the front and back sides,
And the same magnetic pole tooth 19a as the magnetic pole tooth 148e 15a is provided on the inner surface thereof.
20aを形成している。各コイル枠4.5が各固定子ヨ
ーク2.3に納めら几ると各磁極子14 、15はコイ
ル枠4.5の内周に位置する。また軸受固定孔17に油
を含浸した焼結合金製の軸受9を取付け、一方の固定子
ヨーク3の開口に中間板8を被せ、切欠16に突起18
を係合させる。切欠16の深さは突起18の厚さの半分
としているので、他の固定子ヨーク2を乗せてその切欠
16を突起18の厚さの半分の突出部分に係止して一体
に組合す。このとき固定子ヨーク2.3の磁極子14゜
15およびこ几らの磁極子14.15と中間板8の磁極
子19.20の関係を展開状態で第6図のように行き違
いとなるよりにするとともに、磁極歯141 、198
と磁極歯15a # 201は互いにiビフチ(電気角
90度)aだけずらせるようにする。20a. When each coil frame 4.5 is housed in each stator yoke 2.3, each magnetic pole piece 14, 15 is located on the inner periphery of the coil frame 4.5. Further, a bearing 9 made of a sintered metal impregnated with oil is installed in the bearing fixing hole 17, an intermediate plate 8 is placed over the opening of one stator yoke 3, and a protrusion 18 is inserted into the notch 16.
engage. Since the depth of the notch 16 is half the thickness of the protrusion 18, another stator yoke 2 is placed on it, and the notch 16 is engaged with the protruding portion of the protrusion 18, which is half the thickness, so that the stator yoke 2 is assembled integrally. At this time, the relationship between the magnetic pole pieces 14 and 15 of the stator yoke 2.3 and the magnetic pole pieces 14 and 15 of the intermediate plate 8 and the magnetic pole pieces 19 and 20 of the intermediate plate 8 will be changed as shown in FIG. In addition, the magnetic pole teeth 141 and 198
and magnetic pole tooth 15a #201 are made to be shifted from each other by i-bift (90 electrical degrees) a.
回転子10は、軸12に保持具13が圧入により取付け
らn1保持具13に永久磁石11m 、 1lfiが取
付けらnる。この場合、保持具13のつげ(非磁性材)
13mで永久磁石IC、1it)を仕切っている。こ
れらの永久磁石11a 、 llbはたとえばプラスチ
ック磁石等を成形することにより、外周に前記磁極歯1
9fi等と同じ磁極歯21! 、 21bを100極分
歯車状に形成しく磁極歯198等の幅の設定により10
0極(各磁石11a 、 llbは50極〕以上たとえ
ば200極にすることもできる)、永久磁石113゜1
1bともに径方向に着磁さnるが、永久磁石11Mは外
表面が念とえばN極、永久磁石11bの外表面はS極と
なるよりに異ならせている。また永久磁石111 、1
1b相互の磁極歯2111 、211)は第7図(a)
。In the rotor 10, a holder 13 is attached to the shaft 12 by press fitting, and permanent magnets 11m and 1lfi are attached to the holder 13. In this case, the boxwood (non-magnetic material) of the holder 13
Permanent magnet IC, 1it) is separated by 13m. These permanent magnets 11a and llb are made of, for example, plastic magnets, so that the magnetic pole teeth 1 are formed on their outer peripheries.
21 magnetic pole teeth, same as 9fi etc.! , 21b is formed into a gear shape with 100 poles, and by setting the width of the magnetic pole teeth 198, etc.
0 poles (each magnet 11a, llb has 50 poles) or more, for example, it can be 200 poles), permanent magnet 113°1
Both magnets 1b are magnetized in the radial direction, but the outer surface of the permanent magnet 11M is a north pole, and the outer surface of the permanent magnet 11b is a south pole. Also, permanent magnets 111, 1
1b mutual magnetic pole teeth 2111, 211) are shown in FIG. 7(a)
.
(b)のよりに互いに半ピツチ(1菌号〕電気角で18
0度回転方向にずらせている(図で黒い部分が歯、白い
部分が歯溝である)。(b) half pitch each other (1 bacteria number) 18 in electric angle
It is shifted in the direction of rotation by 0 degrees (in the figure, the black part is the tooth, and the white part is the tooth groove).
コイル6.7毎に対向する磁極歯1481198の組お
よび磁極歯151 、201の組は、コイル6.7に通
電することによってそnぞn異磁極が対向する。したが
って、このステップ電動機の動作は、磁極歯141 *
19,1119 # 20aと磁極m 21a、21
t)の対応関係が従来公知の2相コイM方式のものと同
様であるため、従来と同じステップ動作をする。The set of magnetic pole teeth 1481198 and the set of magnetic pole teeth 151 and 201 that face each coil 6.7 have different magnetic poles facing each other by energizing the coil 6.7. Therefore, the operation of this step motor is based on the magnetic pole teeth 141 *
19,1119 # 20a and magnetic pole m 21a, 21
Since the correspondence relationship of t) is the same as that of the conventionally known two-phase coil M system, the step operation is the same as the conventional one.
すなわち要約すると、たとえばコイ/S/6側の磁極歯
14a 、 19aに回転子10の磁極歯21!1が第
8図のよりに対面対向するとき、他方のコイル7側の磁
極歯15a。20mは回転子10の磁極歯21bに対し
て第9図のように90度ずnた関係になり、反対のとき
は逆の関係となるため、ずnた側を逐次励磁することに
よってステップ動作が得らnるのである。その励磁電流
はコイル相互に90度位相がずnたものとなる。That is, to summarize, for example, when the magnetic pole teeth 21!1 of the rotor 10 face the magnetic pole teeth 14a and 19a on the coil/S/6 side as shown in FIG. 8, the magnetic pole teeth 15a on the other coil 7 side. 20 m is offset by 90 degrees with respect to the magnetic pole teeth 21b of the rotor 10 as shown in FIG. is obtained. The excitation currents are out of phase with each other by 90 degrees between the coils.
このように構成したため、従来と比べて2個のコイル6
.7でよく、部品点数の削減になり、構造が簡単になる
。しかもドーナツ状のコイtV6゜7のため、加工コス
トは非常に安価で、組立も順次部品を重ねていく方式と
なるためきわめて簡単になる。ま念1枚の中間板8にコ
イ/l/6 、7相互の磁極歯19a # 20aの片
方ずつを同時に形成するため、軸方向の長さの短縮にな
るとともにコイル相互の磁極歯の位置関係を表わす作業
が不要になる。また中間板8およびその磁極子19.2
0は金型でプレス加工できるので精度が良い。Because of this configuration, two coils 6 are required compared to the conventional method.
.. 7 is sufficient, reducing the number of parts and simplifying the structure. Moreover, since it is a donut-shaped carp tV6°7, the processing cost is very low, and the assembly is extremely easy as the parts are stacked one on top of the other. Since one side of the coil/l/6 and 7 mutual magnetic pole teeth 19a and #20a are simultaneously formed on one intermediate plate 8, the length in the axial direction is shortened and the positional relationship of the magnetic pole teeth of the coils is changed. This eliminates the need to express the information. Also the intermediate plate 8 and its pole piece 19.2
0 has good precision because it can be pressed using a mold.
なお、磁極子14.15,19.20は別体のものをヨ
ーク2.3および中間板8に植付けるようにしてもよい
。また実施例では回転を得るため回転子10の磁極歯2
9 、21b t−回転方向にずらせているが、中間板
8の磁極歯19.20またはその磁極歯19.20とと
もにずらせるようにしてもよい。全体として相対的にず
ルてい1ば動作は同じだからである。また実施例は2相
コイルを用いたが2相以上の複数コイMを用いたもので
第1および@2のコイMの関係にこの発明の溝底を適用
することによっても同効果が得らnる。Incidentally, the magnetic pole pieces 14.15 and 19.20 may be separately attached to the yoke 2.3 and the intermediate plate 8. In addition, in the embodiment, in order to obtain rotation, the magnetic pole teeth 2 of the rotor 10 are
9, 21b t-Although they are shifted in the rotational direction, they may also be shifted together with the magnetic pole tooth 19.20 of the intermediate plate 8 or with its magnetic pole tooth 19.20. This is because the overall operation is the same if there is a relative shift. Further, although the embodiment uses a two-phase coil, a plurality of coils M having two or more phases are used, and the same effect can be obtained by applying the groove bottom of the present invention to the relationship between the first and @2 coils M. nru.
この発明によnば、従来に比して部品点数を削減できる
とともに構造および組立が著しぐ簡単になり、小形化を
図nるとともにコスト安になるという効果がある。According to the present invention, the number of parts can be reduced compared to the prior art, and the structure and assembly can be significantly simplified, resulting in miniaturization and cost reduction.
第1図はこの発明の一実施例の分解斜視図、第2図はそ
の断面図、第3図は中間板の断面図、第4図はその平面
図、第5図は磁極子の拡大斜第6図は&f磁極子S開園
、第7図は回転子の磁極歯の展開図、第8図はコイル側
の固定子および回転子の磁極歯の関係を示す説明図、第
9図はコイル側の固定子および回転子の磁極歯の関係を
示す説明図、第10図は従来例の側面図である。
1・・・固定子、2.3・・・ヨーク、6.7・・・コ
イ118・・・中間板、10−・・回転子、lla 、
llb ・・・永久磁石、14,15,19.20・
・・磁極子、14!@15at19a 、 201 ・
a極歯、2C、21b−・・回転子磁極歯第1図
第2図
0a
第3図
第4図
第6図
11a 21a
11b 21b
第7図
第8図
に
第9図
第10図Fig. 1 is an exploded perspective view of an embodiment of the present invention, Fig. 2 is a sectional view thereof, Fig. 3 is a sectional view of the intermediate plate, Fig. 4 is a plan view thereof, and Fig. 5 is an enlarged perspective view of the magnetic pole piece. Figure 6 shows &f magnetic pole S opening, Figure 7 shows a developed view of the rotor's magnetic pole teeth, Figure 8 is an explanatory diagram showing the relationship between the stator on the coil side and the rotor's magnetic pole teeth, and Figure 9 shows the coil. FIG. 10 is an explanatory diagram showing the relationship between the magnetic pole teeth of the stator and rotor on the side, and FIG. 10 is a side view of a conventional example. 1... Stator, 2.3... Yoke, 6.7... Coil 118... Intermediate plate, 10-... Rotor, lla,
llb...Permanent magnet, 14, 15, 19.20.
...Magnetic pole piece, 14! @15at19a, 201 ・
a Pole teeth, 2C, 21b - Rotor magnetic pole teeth Fig. 1 Fig. 2 Fig. 0a Fig. 3 Fig. 4 Fig. 6 Fig. 6 11a 21a 11b 21b Fig. 7 Fig. 8 Fig. 9 Fig. 10
Claims (2)
の第1および第2のコイルの間に介在されて前記第1お
よび第2のコイルの内周側で軸方向の両方向に延出する
所定数の磁極子を有しさらにその表面に所定数の磁極歯
を形成した中間板と、前記第1および第2のコイルの軸
方向の外側にそれぞれ設けられて各コイルの内周側で軸
方向の中間板側に延出するとともに前記中間板の磁極子
の間に位置する磁極子を有しさらにその表面に所定数の
磁極歯を形成した一対のヨークと、前記コイルの中心軸
上に配置されて外周に前記磁極歯に対向する磁極を形成
した回転子とを備え、前記第1のコイルにおける前記中
間板およびヨークの磁極歯およびこれらに対向する回転
子の磁極の組と、前記第2のコイルにおける前記中間板
およびヨークの磁極歯およびこれらに対向する回転子の
磁極の組とが相互に所定の電気角度回転方向にずれるよ
うにしたステップ電動機。(1) first and second coils that are coaxially arranged in parallel; and a coil that is interposed between the first and second coils and extends in both axial directions on the inner peripheral side of the first and second coils. an intermediate plate having a predetermined number of magnetic pole pieces extending therefrom and further having a predetermined number of magnetic pole teeth formed on its surface; a pair of yokes that extend toward the intermediate plate in the axial direction and have magnetic pole pieces located between the magnetic pole pieces of the intermediate plate, and further have a predetermined number of magnetic pole teeth formed on their surfaces; and a central axis of the coil. a rotor disposed above and having magnetic poles facing the magnetic pole teeth formed on the outer periphery, a set of magnetic pole teeth of the intermediate plate and yoke in the first coil and magnetic poles of the rotor facing these; A step motor in which the magnetic pole teeth of the intermediate plate and yoke in the second coil and a pair of magnetic poles of the rotor opposing these are mutually shifted by a predetermined electrical angle in a rotating direction.
の第1および第2のコイルの間に介在されて前記第1お
よび第2のコイルの内周側で軸方向の両方向に延出する
所定数の磁極子を有しさらにその表面に所定数の磁極歯
を形成した中間板と、前記第1および第2のコイルの軸
方向の外側にそれぞれ設けられて各コイルの内周側で軸
方向の中間板側に延出するとともに前記中間板の磁極子
の間に位置する磁極子を有しさらにその表面に所定数の
磁極歯を形成した一対のヨークと、前記コイルの中心軸
上に配置されて径方向に着磁されるとともに外周に前記
磁極歯に対向する磁極歯を形成した永久磁石を有する回
転子とを備え、前記第1のコイルにおける前記中間板お
よびヨークの磁極歯およびこれらに対向する回転子の磁
極歯の組と、前記第2のコイルにおける前記中間板およ
びヨークの磁極歯およびこれらに対向する回転子の磁極
歯の組とが相互に所定の電気角度回転方向にずれるよう
にしたステップ電動機。(2) first and second coils that are coaxially arranged in parallel; and a coil that is interposed between the first and second coils and extends in both axial directions on the inner peripheral side of the first and second coils. an intermediate plate having a predetermined number of magnetic pole pieces extending therefrom and further having a predetermined number of magnetic pole teeth formed on its surface; a pair of yokes that extend toward the intermediate plate in the axial direction and have magnetic pole pieces located between the magnetic pole pieces of the intermediate plate, and further have a predetermined number of magnetic pole teeth formed on their surfaces; and a central axis of the coil. a rotor having a permanent magnet disposed above and magnetized in the radial direction and having magnetic pole teeth opposing the magnetic pole teeth formed on the outer periphery, the magnetic pole teeth of the intermediate plate and the yoke in the first coil; and a set of magnetic pole teeth of the rotor opposing these, a set of magnetic pole teeth of the intermediate plate and yoke of the second coil, and a set of magnetic pole teeth of the rotor opposing these, mutually in a predetermined electrical angle rotation direction. A step motor that is made to shift.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19702884A JPS6176059A (en) | 1984-09-20 | 1984-09-20 | Step motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19702884A JPS6176059A (en) | 1984-09-20 | 1984-09-20 | Step motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6176059A true JPS6176059A (en) | 1986-04-18 |
JPH0424947B2 JPH0424947B2 (en) | 1992-04-28 |
Family
ID=16367544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19702884A Granted JPS6176059A (en) | 1984-09-20 | 1984-09-20 | Step motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6176059A (en) |
-
1984
- 1984-09-20 JP JP19702884A patent/JPS6176059A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0424947B2 (en) | 1992-04-28 |
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