JPH025668Y2 - - Google Patents
Info
- Publication number
- JPH025668Y2 JPH025668Y2 JP990685U JP990685U JPH025668Y2 JP H025668 Y2 JPH025668 Y2 JP H025668Y2 JP 990685 U JP990685 U JP 990685U JP 990685 U JP990685 U JP 990685U JP H025668 Y2 JPH025668 Y2 JP H025668Y2
- Authority
- JP
- Japan
- Prior art keywords
- stator
- core
- rotor
- electric motor
- flat type
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は小形電動機、特に扁平タイプ小形電動
機に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a small electric motor, particularly a flat type small electric motor.
第３図は従来の永久磁石形ステツピングモータ
を示し、電動機本体の軸方向の寸法を抑制する為
にケース１の背面には何等の突出部を形成しない
ようにし、併せて後部ボールベアリング６−２を
前部ボールベアリング６−１よりも小さいサイズ
としている。
FIG. 3 shows a conventional permanent magnet type stepping motor. In order to suppress the axial dimension of the motor body, no protrusion is formed on the back of the case 1, and the rear ball bearing 6- 2 is smaller in size than the front ball bearing 6-1.
電動機としての効率を高める為、固定子鉄芯２
の磁極先端内周面に形成された固定子極歯２−１
とこれに対向する２つの回転子鉄芯４の外周面に
形成された２つの回転子極歯４−１とは両者の空
隙を最小とする様双方の軸方向の位置を同じ場所
に決めるが、この設定に伴い第３図に示す通り回
転子側前部スペース９−１と同後部スペース９−
２とでは前者がはるかに大きい構造となる。 In order to increase the efficiency of the motor, stator iron core 2
Stator pole tooth 2-1 formed on the inner peripheral surface of the magnetic pole tip of
and the two rotor pole teeth 4-1 formed on the outer peripheral surfaces of the two rotor iron cores 4 facing the rotor cores 4 are positioned at the same axial position so as to minimize the gap between them. , With this setting, as shown in Fig. 3, the rotor side front space 9-1 and the rear space 9-
2, the former has a much larger structure.
これはケース１の内部において固定子側前部ス
ペース８−１と同後部スペース８−２とが等しく
なる様に固定子を配置すると、回転子側について
は前部ボールベアリング６−１がケース前面より
外へ突出したインロー部分に形成された軸受箱に
装着されるのに対し、後部ボールベアリング６−
２がケース背面より内側へ突出する形でケース１
の内部に形成された軸受箱に装着される為であ
る。 This means that if the stator is arranged so that the front space 8-1 on the stator side and the rear space 8-2 on the stator side are equal inside the case 1, the front ball bearing 6-1 on the rotor side will be placed in the front of the case. The rear ball bearing 6-
2 protrudes inward from the back of the case.
This is because the bearing box is installed inside the bearing box.
又、電動機本体の軸方向寸法の抑制が厳しいい
わゆる扁平タイプのステツピングモータ等では、
ケース１の内部スペースが小さいが為に第３図に
示す如く後部ボールベアリング６−２を前部ボー
ルベアリング６−１よりも小さいサイズとせざる
を得ない例も多く、ボールベアリングのもつ耐負
荷容量の減少に目をつぶると共に、外部への寸法
上の影響を避けるべく軸受箱を特別に追加工する
等の工作を必要としていた。 In addition, in so-called flat type stepping motors, etc., where the axial dimension of the motor body is strictly controlled,
Because the internal space of the case 1 is small, there are many cases where the rear ball bearing 6-2 has to be smaller than the front ball bearing 6-1 as shown in Figure 3, and the load capacity of the ball bearing is limited. In addition to turning a blind eye to the decrease in the number of bearings, it was necessary to carry out additional machining of the bearing housing in order to avoid dimensional effects on the outside.
尚、３は固定子巻線、５は永久磁石、７は回転
子軸、１０はベアリングの余圧ばねである。 In addition, 3 is a stator winding, 5 is a permanent magnet, 7 is a rotor shaft, and 10 is an extra pressure spring of a bearing.
一方、耐負荷容量でボールベアリングの小サイ
ズ化が容認されない場合には、第４図に示す様に
前後共、同サイズのボールベアリングを採用する
が、後部ボールベアリング６−２のサイズアツプ
に伴い固定子側後部スペース８−２が増加し、従
つて本体寸法が拡大してしまうと云う問題があつ
た。 On the other hand, if the load capacity does not permit downsizing the ball bearings, ball bearings of the same size are used for both the front and rear as shown in Figure 4, but as the rear ball bearing 6-2 increases in size, There was a problem in that the rear space 8-2 on the stator side increased and the main body size accordingly increased.
前述の通り前後２つのボールベアリングを装着
する軸受箱の配置が固定子を内装するケース１の
内部スペースに対しずれをもつ、即ち後部ボール
ベアリング６−２のケース内部への突出状態が回
転子鉄芯４の配置を制約するという事が扁平タイ
プ小形電動機特有の問題である。 As mentioned above, the arrangement of the bearing box in which the two front and rear ball bearings are mounted is misaligned with the internal space of the case 1 that houses the stator, that is, the state in which the rear ball bearing 6-2 protrudes into the case is similar to that of the rotor iron. Restricting the arrangement of the core 4 is a problem unique to flat type small electric motors.
本考案の目的は電動機本体の寸法拡大を伴う事
なく耐負荷容量の大きな、大きなサイズの軸受を
使用する事が出来る扁平タイプ小形電動機を得る
にある。
The purpose of the present invention is to obtain a flat type compact electric motor that can use a large-sized bearing with a large load capacity without increasing the dimensions of the motor body.
本考案の扁平タイプ小形電動機は、円管状ヨー
クに半径方向内方に放射状に複数の固定子磁極を
配設して成る固定子鉄芯と前記磁極に巻装した固
定子巻線とより成る固定子と、該固定子磁極の内
周面に空隙を介して対向配設した回転子鉄芯と回
転子軸とより成る回転子とを有する扁平タイプ小
形電動機において、固定子磁極内周面に対向する
前記回転子鉄芯を軸方向に変位せしめると共に、
前記固定子鉄芯の磁極の極歯部分を同じく軸方向
に前記回転子鉄芯の変位に等しいだけ変位せしめ
た事を特徴とする。
The flat type small electric motor of the present invention has a stator iron core consisting of a cylindrical yoke with a plurality of stator magnetic poles arranged radially inward, and a stator winding wound around the magnetic poles. and a rotor consisting of a rotor iron core and a rotor shaft, which are arranged opposite to the inner circumferential surface of the stator magnetic poles with a gap therebetween. displacing the rotor core in the axial direction,
The present invention is characterized in that the pole tooth portions of the magnetic poles of the stator core are also displaced in the axial direction by an amount equal to the displacement of the rotor core.
本考案においては第１図、第２図ａ，ｂに示す
ように固定子鉄芯２の磁極の内周面に対向する回
転子鉄芯４−１を軸方向に前方に△Ｌだけ変位せ
しめ、回転子側前部スペース９−１を圧縮し同後
部スペース９−２を確保すると共に、固定子鉄芯
２の磁極の極歯２−１部分を磁極に相対的に軸方
向に前記に同じく△Ｌだけ変位せしめ、回転子外
周面に形成された回転子極歯４−１と固定子鉄芯
２の内周面に形成された固定子磁極の極歯２−１
との適正な対向配置が崩れない様にする。
In the present invention, as shown in FIGS. 1 and 2 a and b, the rotor core 4-1, which faces the inner peripheral surface of the magnetic poles of the stator core 2, is displaced forward in the axial direction by ΔL. , while compressing the rotor side front space 9-1 and securing the same rear space 9-2, the pole tooth 2-1 portion of the magnetic pole of the stator iron core 2 is moved in the axial direction relative to the magnetic pole as described above. Displaced by ΔL, rotor pole teeth 4-1 formed on the rotor outer circumferential surface and stator magnetic pole pole teeth 2-1 formed on the inner circumferential surface of the stator iron core 2.
Make sure that the proper facing arrangement is not disrupted.
本考案電動機は上記のような構成であるから電
動機本体の幅を大きくすることなく後部ボールベ
アリング６−２の取付スペースを十分大きくする
ことができ、従つて耐負荷容量の大きい、大きな
サイズのものを使用する事ができる大きな利益が
ある。
Since the electric motor of the present invention has the above-mentioned configuration, the mounting space for the rear ball bearing 6-2 can be made sufficiently large without increasing the width of the electric motor body. There are great benefits you can use.
第１図は本考案電動機の断面図、第２図ａ，ｂ
はその固定子鉄芯の側面図及び縦断面図、第３
図、第４図は夫々従来の電動機の断面図である。
１……ケース、２……固定子鉄芯、２−１……
固定子極歯、３……固定子巻線、４……回転子鉄
芯、４−１……回転子極歯、５……永久磁石、６
−１……前部ボールベアリング、６−２……後部
ボールベアリング、７……回転子軸、８−１……
固定子側前部スペース、８−２……固定子側後部
スペース、９−１……回転子側前部スペース、９
−２……回転子側後部スペース、１０……余圧ば
ね。
Figure 1 is a sectional view of the electric motor of the present invention, Figure 2 a and b
is a side view and longitudinal sectional view of the stator core, 3rd
4 are sectional views of conventional electric motors. 1... Case, 2... Stator iron core, 2-1...
Stator pole teeth, 3... Stator winding, 4... Rotor core, 4-1... Rotor pole teeth, 5... Permanent magnet, 6
-1...Front ball bearing, 6-2...Rear ball bearing, 7...Rotor shaft, 8-1...
Stator side front space, 8-2... Stator side rear space, 9-1... Rotor side front space, 9
-2...Rotor side rear space, 10...Extra pressure spring.
Claims (1)
の固定子磁極を配設して成る固定子鉄芯と前記
磁極に巻装した固定子巻線とより成る固定子
と、該固定子磁極の内周面に空隙を介して対向
配設した回転子鉄芯と回転子軸とより成る回転
子とを有する扁平タイプ小形電動機において、
固定子磁極内周面に対向する前記回転子鉄芯を
軸方向に変位せしめると共に、前記固定子鉄芯
の磁極の極歯部分を同じく軸方向に前記回転子
鉄芯の変位に等しいだけ変位せしめた事を特徴
とする扁平タイプ小形電動機。 (2) 前記固定子鉄芯が積層鉄芯より成る実用新案
登録請求の範囲第１項記載の扁平タイプ小形電
動機。 (3) 前記固定子鉄芯が磁性体塊より成る実用新案
登録請求の範囲第１項記載の扁平タイプ小形電
動機。[Claims for Utility Model Registration] (1) A stator iron core comprising a plurality of stator magnetic poles arranged radially inward on an annular yoke, and a stator winding wound around the magnetic poles. A flat type small electric motor having a stator consisting of a stator, and a rotor consisting of a rotor core and a rotor shaft, which are arranged opposite to each other through an air gap on the inner circumferential surface of the stator magnetic poles,
Displace the rotor core facing the inner circumferential surface of the stator magnetic pole in the axial direction, and also displace the pole tooth portion of the magnetic pole of the stator core in the axial direction by an amount equal to the displacement of the rotor core. A flat type small electric motor characterized by: (2) The flat type small electric motor according to claim 1, wherein the stator core is a laminated core. (3) The flat type small electric motor according to claim 1, wherein the stator iron core is made of a magnetic mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP990685U JPH025668Y2 (en) | 1985-01-29 | 1985-01-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP990685U JPH025668Y2 (en) | 1985-01-29 | 1985-01-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61126784U JPS61126784U (en) | 1986-08-08 |
| JPH025668Y2 true JPH025668Y2 (en) | 1990-02-09 |
Family
ID=30490571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP990685U Expired JPH025668Y2 (en) | 1985-01-29 | 1985-01-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH025668Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4739201A (en) * | 1986-07-25 | 1988-04-19 | The Superior Electric Company | Means to reduce harmonic torque in electromagnetic machines |
-
1985
- 1985-01-29 JP JP990685U patent/JPH025668Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61126784U (en) | 1986-08-08 |
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