JPS5996841A - Cylindrical wound body with bottomed cup - Google Patents

Cylindrical wound body with bottomed cup

Info

Publication number
JPS5996841A
JPS5996841A JP20641482A JP20641482A JPS5996841A JP S5996841 A JPS5996841 A JP S5996841A JP 20641482 A JP20641482 A JP 20641482A JP 20641482 A JP20641482 A JP 20641482A JP S5996841 A JPS5996841 A JP S5996841A
Authority
JP
Japan
Prior art keywords
bobbin
wire
cylindrical
bottomed cup
wound
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
Application number
JP20641482A
Other languages
Japanese (ja)
Inventor
Yoshikuni Nozawa
野沢 義邦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Entatsuku Kk
Original Assignee
Entatsuku Kk
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Entatsuku Kk filed Critical Entatsuku Kk
Priority to JP20641482A priority Critical patent/JPS5996841A/en
Priority to US06/511,687 priority patent/US4538083A/en
Priority to GB08318387A priority patent/GB2126797B/en
Priority to US06/592,779 priority patent/US4607803A/en
Publication of JPS5996841A publication Critical patent/JPS5996841A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K15/00Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
    • H02K15/0435Wound windings
    • H02K15/0464Lap windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K15/00Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
    • H02K15/0435Wound windings
    • H02K15/0464Lap windings
    • H02K15/0471Lap windings manufactured by flattening a spiral winding

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

PURPOSE:To obtain a balanced cylindrical wound body with a bottomed cup by symmetrically forming at both sides strand zones at the rotational shaft as a boundary. CONSTITUTION:A cylindrical bobbin 5 is mounted on the outer cylinder 3 of a cylindrical jig 1, and a rotational shaft 3 and a commutator 7 are integrally formed on the bobbin 5. The bobbin 5 has shoulders 8 and opening end faces 9 at both axial ends, and strands 10 are aligned and wound obliquely to the axis on the peripheral surface 11 of the bobbin 5 between the shoulders 8 and the opening end face 9. In other words, the strands 10 are aligned and wound to form strand zones 20, and engaged with the opening end face 9 of the side far from the portion of the shoulder 8 engaged with the strands 10 at a rotational shaft 6 as a boundary. After a set of symmetrical strand zones are formed, the bobbin 5 is removed. In this manner, balanced cylindrical wound body with a bottomed cup can be obtained.

Description

【発明の詳細な説明】 本発明ハ、ブラシレスモータ、スロットレスモーフ、コ
アレスモータ等に使用される電機子としての有底カップ
筒秋巻線体に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention (c) relates to a bottomed cup tube winding body used as an armature for use in brushless motors, slotless morphs, coreless motors, and the like.

出願人は、昭和57年7月7日に特願昭57−1180
15号として円筒形巻線体の製造方法、昭和57年8月
26日に特願昭57−147989号、特願昭57−1
47990号として円筒状巻線体なるものを時許出願し
ている。この円筒状巻線体は、有底カップ筒状のもので
あって、被素線巻回体としての円柱状治具に素線な直接
巻回して、有底カップ筒状の巻回素線体を形成し、この
円柱状治具からこの巻回素線体を増9はず) して組成するものである。
The applicant filed a patent application No. 57-1180 on July 7, 1980.
No. 15, a method for manufacturing a cylindrical winding body, Patent Application No. 147989, Patent Application No. 57-1, filed on August 26, 1981.
No. 47990 has been filed for a cylindrical winding body. This cylindrical winding body has a bottomed cup cylindrical shape, and the strands are directly wound around a cylindrical jig serving as a stranded wire winding body. The wound strand body is formed from this cylindrical jig and the wound strand body is increased (9).

本発明は、この有底カップ筒状巻線体の新たなる改良を
図ったもので、その目的とするところは、バランスのと
れた有底カップ筒状巻醐体を提供することにある。
The present invention aims at a new improvement of this bottomed cup cylindrical wound body, and its purpose is to provide a well-balanced bottomed cup cylindrical wound body.

以下に本発明に係る円筒状巻線体の実施例を図面に基づ
いて説明する。
Examples of the cylindrical winding body according to the present invention will be described below based on the drawings.

第1図は本発明に係る有底カップ筒状巻線体の製造に使
用する製造装置の主要部を示すもので、この第1図にお
いて、1は円柱状治具であって、この円柱状治具1は、
内筒2と外筒3とから大略iiされ、外筒3は内筒2と
共に一体回転するようにされ、円筒2にはその中央に挿
通孔4が形成されている。外筒3は内筒2と共に図示を
略す回転駆動源によって回転され、外筒3には被素想巻
回体としてのボビン5が装着され、このボビン5は円筒
形状とされて、このボビン5には回転軸6及び整流子7
がモールド成形法によシ一体に形成され、この回転軸6
は挿通孔4Kn人されている。ここでは、このボビン5
には、エアギャップを小さくするためにフィルム、シー
トを熱間プレス加工したものが使用され、このボビン5
は七の軸長に別して直径が大きな短円筒状とされ、整流
子7への結線用フイザー7が取シ付けらtている。ボビ
ン5はその軸方向両端に肩部8と開口端面9とを崩して
おり、整流子7はその軸方向に延設されている。素線1
0は、この肩部8と開口端面9との間でポビン50周面
11に七の軸線に対して斜め方向に整列巻回されるもの
で、ボビン5の肩@8の側には、第2図に示すように、
一対の弾性ローラ12,15が回転軸6を境にしてその
両@VJに対称形に設置され、14.15はその支軸を
示すと共に、一対の弾性ローラ16,17が回転軸6を
境にしてその両gJK設置さtr、ta。
FIG. 1 shows the main parts of the manufacturing apparatus used for manufacturing the bottomed cup cylindrical winding body according to the present invention. In FIG. 1, 1 is a cylindrical jig; Jig 1 is
The inner cylinder 2 and the outer cylinder 3 are generally separated from each other, and the outer cylinder 3 is configured to rotate together with the inner cylinder 2, and the cylinder 2 has an insertion hole 4 formed in its center. The outer cylinder 3 is rotated together with the inner cylinder 2 by a rotational drive source (not shown), and a bobbin 5 as an imaginary wound body is attached to the outer cylinder 3, and the bobbin 5 has a cylindrical shape. has a rotating shaft 6 and a commutator 7.
is integrally formed by a molding method, and this rotating shaft 6
There are 4Kn insertion holes. Here, this bobbin 5
In order to reduce the air gap, a hot-pressed film or sheet is used, and this bobbin 5
It has a short cylindrical shape with a large diameter according to its axial length, and a fuser 7 for connecting to the commutator 7 is attached thereto. The bobbin 5 has a shoulder portion 8 and an open end surface 9 at both ends in the axial direction, and the commutator 7 extends in the axial direction. Element wire 1
0 is wound on the circumferential surface 11 of the bobbin 50 between the shoulder portion 8 and the opening end surface 9 in a diagonal direction with respect to the axis of the bobbin 5. On the side of the shoulder @8 of the bobbin 5, As shown in Figure 2,
A pair of elastic rollers 12 and 15 are installed symmetrically on both @VJ with the rotating shaft 6 as a boundary, and 14.15 indicates the supporting axis, and a pair of elastic rollers 16 and 17 are installed on both sides of the rotating shaft 6 as a boundary. Then both gJK were installed tr, ta.

19はその支軸を示す。この一対の弾性ローラ16.1
7は、第2図に示すように、そのいずれか一方がボビン
5の周面11に圧接されているときには他方がその周面
11から離反されて素線10の巻回の際のさまたげとな
らないようにされている。なお、素線1oは熱融着ある
いは、粘着等の手段によってボビン5に接着されるもの
であるから、この一対の弾性ローラ16,17を交互に
離反接近させる構成としても支障はない。−別の弾性ロ
ーラ12,15を結ぶ@線と一対の弾性ローラ16,1
7とを結ぶ直線とは互いに直角となるように各弾性ロー
ラ12.15.16゜17は設置され、各弾性ローラ1
2,15.16゜17は各支軸14,15,18.19
  K刻して回転自在である。
19 indicates its supporting axis. This pair of elastic rollers 16.1
7, when one of them is pressed against the circumferential surface 11 of the bobbin 5, the other is separated from the circumferential surface 11 and does not become an obstruction when winding the wire 10. It is like that. Incidentally, since the wire 1o is bonded to the bobbin 5 by means such as heat fusion or adhesive, there is no problem even if the pair of elastic rollers 16 and 17 are alternately moved away from and approached. - @ line connecting another elastic roller 12, 15 and a pair of elastic rollers 16, 1
Each elastic roller 12, 15, 16° 17 is installed so that it is perpendicular to the straight line connecting 7, and each elastic roller 1
2, 15.16° 17 is each support shaft 14, 15, 18.19
It can be rotated freely in K increments.

弾性ロー212,13は、第1図に示すように、円錐台
形状とされて、テーパ面12a、13aを肩しており、
このテーパ面12a、13a が肩部8の端縁に圧接さ
れるa53!とさね、弾性ローラ16゜17は、第3図
に示すように、その周面がボビン5の周面11にその軸
方向全面にわたって圧接される構成とさバている。各弾
性ローラ12゜13.16.17は、素線1oの転動係
止部材としての機能を有しており、素線10は第2図に
示すように整列巻回されて素線帯2oをm成し、ここで
は、回転軸6を境にして素線1oが係止される肩部8の
部分から遠い側の開口端面9に係止されるものとされ、
第4図に基づいてこれを説明すると、符号■で示すよう
に、素線1゜を整列出来るよう肩部の面に沿って弾性ロ
ーラ13に向かわせて弾性ローラ13を利用してその素
線10を弦状整列させ、これを肩部8に係止させ、符号
量で示すようI(、その素線1oを周面11に沿わせつ
つ弾性ローラ16が存在する方向であって、がっ、開口
端面9に向かわせてこの弾性ローラ16を利用してその
素線1゜の滑落を抑止しつつ開口端面9に整列出来るよ
う弾性ローラ16の面と開口端より先の外筒3の面で係
止させ、この弾性ローラ16を経由した後素線10を弾
性ローラ12が存在する方向であって、かつ、肩部8の
側に向かわせて、符号■で示すように、素線10を再び
層剤8に係止させ、これを繰返して片側のみに素線帯2
゜を形成し、その後、符号■で示すように素線1゜を弾
性ローラ15に向かわせてこの弾性ローラ16に素線1
oを係止させ、符号■で示すように回転@6に向かわせ
てこれに係止させた後、符号■で示すように再び弾性ロ
ーラ15Vc向かわせて巻回方向を反転さセた後、符号
■で示すようにζ弾性ローラ17が存在する方向であっ
て、かつ、開口端面9が存在する方向に向がゎせてこの
弾性ローラ17を利用して開口端面9f係iI:、さセ
、この弾性ローラ17を経由させて弾性ローラ12が存
在する方向であって、がっ、肩部8に向かわせて、この
弾性ローラ12を利用して素線11を弦状に整列させつ
つ符号6で示すように、素線11を肩部8に係止させ、
これを繰返して第2図に示すように軸6を境忙してその
両側に素線帯2oを対称形状に構成する。
As shown in FIG. 1, the elastic rows 212 and 13 are shaped like a truncated cone and shoulder the tapered surfaces 12a and 13a.
These tapered surfaces 12a, 13a are pressed against the edge of the shoulder portion 8 a53! As shown in FIG. 3, the elastic rollers 16 and 17 are configured such that their circumferential surfaces are pressed against the circumferential surface 11 of the bobbin 5 over the entire axial direction. Each elastic roller 12, 13, 16, 17 has a function as a rolling locking member for the wire 1o, and the wire 10 is wound in an aligned manner as shown in FIG. Here, it is assumed that the opening end surface 9 is locked on the side far from the part of the shoulder 8 where the wire 1o is locked, with the rotation axis 6 as a boundary,
To explain this based on FIG. 4, as shown by the symbol ■, the strands are moved toward the elastic roller 13 along the shoulder surface so that the strands 1° can be aligned. 10 are arranged in a chord shape, and are locked to the shoulder part 8, and as shown by the code amount, I , the surface of the elastic roller 16 and the surface of the outer cylinder 3 ahead of the open end so that the elastic roller 16 can be used toward the open end surface 9 to prevent the strands from sliding 1° and align with the open end surface 9. After passing through the elastic roller 16, the strand 10 is moved in the direction where the elastic roller 12 is present and toward the shoulder 8, as shown by the symbol ■. is fixed to the layer material 8 again, and this process is repeated to form the wire band 2 on only one side.
After that, as shown by the symbol ■, the strand 1° is directed toward the elastic roller 15, and the strand 1 is rolled onto the elastic roller 16.
o is locked, turned to rotation @6 as shown by symbol ■, and locked there, and then turned to the elastic roller 15Vc again as shown by symbol ■ to reverse the winding direction. As shown by the symbol ■, the direction is in the direction where the ζ elastic roller 17 exists, and the direction is in the direction where the opening end surface 9 exists, and using this elastic roller 17, the opening end surface 9f relation iI:, , in the direction in which the elastic roller 12 exists via the elastic roller 17, and toward the shoulder 8, using the elastic roller 12 to align the strands 11 in a chord shape. As shown at 6, the wire 11 is locked to the shoulder portion 8,
This process is repeated to form wire bands 2o in a symmetrical shape on both sides of the shaft 6, as shown in FIG.

第5図はその巻回斜視図を示す。この巻回方法による場
合、一対の素線帯20,20は、第6図に示すように、
そのボビン5の周面において互いに交叉するものとされ
、かつ、開口端面9の側においては、素線10は第5図
に示すように整列積層係止されて、この係止部が半径外
方向に向かっての厚さの増大を少くしている。このよう
にして、対称形状の素線帯2[]、2[]を−組形成し
た後、タップ出しのための素線10を引き出し、その佐
、回転筒5を弾性ローラ12,13゜16.17に対し
て所定の角度だけ回転吏セて、対称形状の素線帯の組の
形成を繰返す。ここでは、回転筒と共にボビン5を12
0度毎に回転させて対称形状の素線帯の組を形成するこ
ととさ4ており、第7図はその対称形状の素線帯の組が
3組*aされていることを示している。
FIG. 5 shows a perspective view of the winding. When using this winding method, the pair of wire bands 20, 20, as shown in FIG.
They cross each other on the circumferential surface of the bobbin 5, and on the open end surface 9 side, the strands 10 are aligned and stacked and locked as shown in FIG. The increase in thickness towards the end is reduced. After forming a set of symmetrical wire bands 2[], 2[] in this way, the wire 10 for tapping is pulled out, and the rotary tube 5 is moved around the elastic rollers 12, 13°16. .17 by a predetermined angle and repeat the formation of a set of symmetrical wire bands. Here, the bobbin 5 is 12
It is said that sets of symmetrically shaped wire bands are formed by rotating every 0 degrees, and Figure 7 shows that there are three sets of symmetrically shaped wire bands*a. There is.

第8図は本発明に係る有底カップ筒状巻線体の第2の実
施例を示すもので、この実施例では、回転軸6を境にし
て素線10が係止される肩部8の部分から近い側の開口
端面9に素線が係止されるものとしfCもので、図に符
号Aで示すように素線10を巻回した後、符号Bで示す
ように素線10を巻回して一組の対称形状の素線帯20
を形成するもので、この巻回方法によれば、−組の素線
帯20は交叉したものとならず、このように構成すると
、素線10の引廻し角度が少さくなりて肩部8から開口
端面までの係止部間の距離が短縮されることとなるので
、■抵抗損夷の減少、■周辺の線帯の重なシ、■慣性の
減少をもたらす。
FIG. 8 shows a second embodiment of the bottomed cup cylindrical winding body according to the present invention. It is assumed that the strand is secured to the open end face 9 on the side nearer to the part of fC, and after winding the strand 10 as shown by symbol A in the figure, A set of symmetrical wire bands 20 are wound together.
According to this winding method, the wire bands 20 of the - group do not cross each other, and with this configuration, the winding angle of the wire 10 is reduced and the shoulder portion 8 Since the distance between the locking parts from to the opening end face is shortened, this results in (1) a reduction in resistance loss, (2) overlapping of surrounding wire bands, and (2) a decrease in inertia.

なお、第9図はこのようにして形成された有底カップ筒
状巻線体を使用してコアレスモータに適用した実施例を
示すものであり、この囚において、符号21は有底カッ
プ筒状巻線体、22はケース、23はケース蓋、24は
永久磁石、25はブラシである。
In addition, FIG. 9 shows an example in which the bottomed cup cylindrical winding body formed in this manner is applied to a coreless motor, and in this case, reference numeral 21 indicates the bottomed cup cylindrical winding body. 22 is a case, 23 is a case lid, 24 is a permanent magnet, and 25 is a brush.

本発明は、り上説明したように、素耐帯を回転軸を境に
してその両側に対称形状に形成した有底カップ筒状巻線
体であるので、短円筒や偏手形のものでは特にa要なバ
ランスがとれた有底カップ筒状巻G体とすることができ
、これは、この有底カップ筒状巻線体を電機子として使
用した場合に、 ■ 機械的電気−的振動−雑音り低減、■ 短円筒状の
偏平型電機子としては径が小さくてもその割にトルクが
太きい、 ■ 慣性が小さい という効果に通じる。
As explained above, the present invention is a bottomed cup cylindrical winding body in which the bare belt is formed symmetrically on both sides of the rotation axis, so it is particularly suitable for short cylindrical or eccentric type. It is possible to create a bottomed cup cylindrical winding G body with the necessary balance, which means that when this bottomed cup cylindrical winding body is used as an armature, This leads to the following effects: noise reduction, ■ Even though the diameter is small for a short cylindrical flat armature, the torque is relatively large, and ■ small inertia.

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

第1囚は本発明に係る有底カッグ筒払巻緋体のl造装置
の主要部縦断面図、 第2因はその平面図、 第6図はその製造装置の部分断面図、 第4図はその巻回方法説明(9)、 第5図(イ)はその巻回斜視図、第5図!(口jはその
部分斜視(9)、 第6図はその有底カップ筒状巻線体の側面図、第7囚は
その有底カップ筒状巻線体の肩部部分の平面図、 第8圀は本発明に係る有底カップ筒状巻線体の他の実施
例を示す説明図、 第9図は本発明に係る有底カップ筒状巻線体をコアレス
モータに適用した場合の横取を示す縦1面図、 である。 1・・・円柱状治具 5・・・ボビン 6・・・回転軸 8・・・肩部 9・・・開口端面 10・・・素線 20・・・素線帯 特許出願人 エンタック株式会社 −:I!1  図 f2m 13 凶 24 図 6 (イ)  第5凶 97  図 n O ?8図 手続補正書 1.事件の表示昭和57年特許願 第206,414号
2°発”A I) 名称有底カップ筒状巻線体3、補正
する者 事件との関係 特許出願人 名称   エンタック株式会社 (ほか  1 名) (2)図面 (1)  明、−則書第3頁第8行「フィルム」の前に
「列えば」と挿入する。 (2)  同1M7頁第6行「積1督」とあるを削除す
る。 13)同、第8頁第19行〜末行「偏手形」とあるを、
「扁平形」と補正する。
The first figure is a vertical cross-sectional view of the main part of the manufacturing device for the bottomed cag tsutsuwaki makihitai according to the present invention, the second factor is a plan view thereof, Figure 6 is a partial cross-sectional view of the manufacturing device, and Figure 4 is an explanation of the winding method (9), and Figure 5 (a) is a perspective view of the winding method, Figure 5! (The mouth j is a partial perspective view (9), Figure 6 is a side view of the bottomed cup cylindrical winding body, Figure 7 is a plan view of the shoulder portion of the bottomed cup cylindrical winding body, 8 is an explanatory diagram showing another embodiment of the bottomed cup cylindrical winding body according to the present invention, and FIG. 9 is a lateral view when the bottomed cup cylindrical winding body according to the present invention is applied to a coreless motor. This is a vertical plan view showing the arrangement. 1...Cylindrical jig 5...Bobbin 6...Rotary shaft 8...Shoulder 9...Open end face 10...Element wire 20. ... Strand wire band patent applicant Entac Co., Ltd. -: I! 1 Figure f2m 13 24 Figure 6 (A) 5th 97 Figure n O ? 8 Procedural amendment 1. Indication of the case 1988 Patent application No. No. 206,414 2° ``A I) Name: Bottomed Cup Cylindrical Winding Body 3, Relationship with the Amended Person Case Name of Patent Applicant: Entac Co., Ltd. (and 1 other person) (2) Drawings (1) Akira, - Insert ``Renba'' in the 8th line of the 3rd page of the rule book before ``Film''. (2) Delete the line 6 on page 1M7 that says ``Product 1 Director''. 13) Ibid., page 8, lines 19 to the last line, “eclipse”
Corrected as "flat shape".

Claims (1)

【特許請求の範囲】[Claims] (1)軸方向端部に肩部な有する被素線巻回体の該肩部
から前記被素線巻回体の軸回シ方向周面にわたって7素
線を巻回し、1整列された素線帯が形成されている有底
カップ筒状巻粉体であって、 前記素線帯は回転軸を境にしてその両側に対称形状に形
成されていることを特徴とする有底カップ筒状巻線体。
(1) Seven strands of wire are wound from the shoulder of a wire-wound body having a shoulder at its axial end over the circumferential surface of the wire-wound body in the axial direction, and the strands are aligned in one row. A bottomed cup cylindrical wound powder having a wire band formed thereon, wherein the wire band is formed in a symmetrical shape on both sides of a rotation axis as a boundary. Winding body.
JP20641482A 1982-07-07 1982-11-25 Cylindrical wound body with bottomed cup Pending JPS5996841A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP20641482A JPS5996841A (en) 1982-11-25 1982-11-25 Cylindrical wound body with bottomed cup
US06/511,687 US4538083A (en) 1982-07-07 1983-07-07 Rotor/stator winding and method and apparatus for producing same
GB08318387A GB2126797B (en) 1982-07-07 1983-07-07 Rotor/stator winding and method and apparatus for producing same
US06/592,779 US4607803A (en) 1982-07-07 1984-03-26 Rotor/stator winding and method and apparatus for producing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20641482A JPS5996841A (en) 1982-11-25 1982-11-25 Cylindrical wound body with bottomed cup

Publications (1)

Publication Number Publication Date
JPS5996841A true JPS5996841A (en) 1984-06-04

Family

ID=16522968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20641482A Pending JPS5996841A (en) 1982-07-07 1982-11-25 Cylindrical wound body with bottomed cup

Country Status (1)

Country Link
JP (1) JPS5996841A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5236702A (en) * 1975-09-18 1977-03-22 Matsushita Electric Ind Co Ltd Armature of cup type coreless motor
JPS5438505A (en) * 1977-09-02 1979-03-23 Kensuke Ikeda Armature coil of multipoleecup type coreless motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5236702A (en) * 1975-09-18 1977-03-22 Matsushita Electric Ind Co Ltd Armature of cup type coreless motor
JPS5438505A (en) * 1977-09-02 1979-03-23 Kensuke Ikeda Armature coil of multipoleecup type coreless motor

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