JPH0416626Y2 - - Google Patents
Info
- Publication number
- JPH0416626Y2 JPH0416626Y2 JP1982047021U JP4702182U JPH0416626Y2 JP H0416626 Y2 JPH0416626 Y2 JP H0416626Y2 JP 1982047021 U JP1982047021 U JP 1982047021U JP 4702182 U JP4702182 U JP 4702182U JP H0416626 Y2 JPH0416626 Y2 JP H0416626Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- case
- cut
- flat
- opening
- 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 4
- 230000004907 flux Effects 0.000 description 4
- 230000004323 axial length Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
- Dc Machiner (AREA)
Description
【考案の詳細な説明】
この考案は小型モータに関するものである。た
とえばモータの用途を電気かみそりとした場合、
携帯および収納の便利さからモータをラジアル方
向に薄くすることが求められる。しかし電気かみ
そりについては、ひげの切断負荷が加わつた時に
回転力が低下したり、電池寿命を長く保つことか
ら電流が大きくなつたりすることは良くないとさ
れている。そこで、薄型で高トルクかる低電流値
を達成するためには、許された体格内でステータ
の永久磁石による有効フラツクスをできるだけ大
きく取ることと、ロータ側でアンペアターンを増
してトルク定数M(gf.cm/A)をできるだけ大き
くすることが必要となる。前者のためにはヨーク
の有効断面積を増すこと、後者のためにはロータ
鉄心径をできるだけ大きくすることがその具体的
方法となる。一方コアレスモータを使用すれば、
上記問題点はなくなるが、コア型直流モータに比
べて2〜3倍のコスト高となる。[Detailed description of the invention] This invention relates to a small motor. For example, if the motor is used for an electric shaver,
For convenience of portability and storage, it is necessary to make the motor thinner in the radial direction. However, when it comes to electric razors, it is said that it is not good for the rotating force to decrease when the load of cutting beards is applied, or for the current to increase in order to maintain a long battery life. Therefore, in order to achieve a low current value with a thin design and high torque, it is necessary to increase the effective flux due to the stator's permanent magnets as much as possible within the allowed body size, and increase the ampere turns on the rotor side to increase the torque constant M (gf It is necessary to make .cm/A) as large as possible. For the former, the specific method is to increase the effective cross-sectional area of the yoke, and for the latter, the concrete method is to increase the rotor core diameter as much as possible. On the other hand, if you use a coreless motor,
Although the above problems are eliminated, the cost is two to three times higher than that of a core type DC motor.
そこでさらに具体的に、モータが限られたスペ
ースを満すようにするため、第4図のようにステ
ータケースAを扁平箱形にした場合、必然的にそ
のヨーク内面寸法aよりもロータの鉄心外径bを
小(a>b)とする必要があり、そのため出力、
性能の面で劣ることになる。この解決案として第
5図のように平板部Cに切欠きDを形成し、ロー
タBの鉄心の外周部をこの切欠きD内に進入しう
るようにすると、その分だけロータBの鉄心外径
を増大でき、出力を向上できる。 More specifically, if the stator case A is made into a flat box shape as shown in Figure 4 in order for the motor to fill the limited space, the rotor's iron core will inevitably be smaller than the yoke's inner dimension a. It is necessary to make the outer diameter b small (a>b), so the output,
This will result in inferior performance. As a solution to this problem, a notch D is formed in the flat plate portion C as shown in Fig. 5, and the outer circumference of the core of the rotor B can be inserted into the notch D. The diameter can be increased and the output can be improved.
しかしながら、この場合、切欠きDを設けたこ
とによつてケース(ヨーク)Aの有効磁略断面が
小さくなり磁気抵抗が増しかつ磁束の漏洩が大き
くなるため、性能は改善されないことになる。 However, in this case, the provision of the notch D reduces the effective magnetic cross-section of the case (yoke) A, increases magnetic resistance, and increases leakage of magnetic flux, so that the performance is not improved.
したがつて、この考案の目的は、出力、性能と
もに改善された小型モータを提供することであ
る。 Therefore, the purpose of this invention is to provide a small motor with improved output and performance.
この考案の一実施例を第1図ないし第3図に示
す。すなわち、この小型モータは、ヨークを兼ね
るケース1を一対の相対向する平板部2と一対の
相対向する円弧側板3とで扁平筒形に形成し、そ
の一端に端壁4、他端に開口5を有するものとす
る。さらに平板部2の中央には露出窓6を形成
し、露出窓6の軸方向開口5側の連接片7に切起
片7b,7cを形成することにより露出窓6を切
欠き状に開口する切起し開口7aを形成してい
る。このケース1の端壁4の中央孔8に、含油軸
受9をもつた軸受台10が取付けられ、円弧側板
3の内側に円弧マグネツト11,12が第2図の
ように圧入され、露出窓6の相当位置に切起しス
トツパ13によつて位置決めされている。 An embodiment of this invention is shown in FIGS. 1 to 3. That is, in this small motor, a case 1 that also serves as a yoke is formed into a flat cylindrical shape with a pair of opposing flat plate parts 2 and a pair of opposing arcuate side plates 3, with an end wall 4 at one end and an opening at the other end. 5. Further, an exposed window 6 is formed in the center of the flat plate portion 2, and cut-out pieces 7b and 7c are formed on the connecting piece 7 on the axial opening 5 side of the exposed window 6, so that the exposed window 6 is opened in a cutout shape. A cut and raised opening 7a is formed. A bearing stand 10 with an oil-impregnated bearing 9 is attached to the central hole 8 of the end wall 4 of the case 1, arcuate magnets 11 and 12 are press-fitted inside the arcuate side plate 3 as shown in FIG. It is positioned by a cut-and-raise stopper 13 at a corresponding position.
一方回転子14において、15は軸、16は回
転子鉄心、17はコイル、18はスラスト規制用
リング、19は整流子、20はバリスタなどの雑
音防止素子である。この回転子14の鉄心外径
b′はケース1の平板部の外面間間隔hと略等しく
し、また露出窓6の軸方向長さlが鉄心16の軸
方向長さa′よりやや大となる関係にしている。こ
のように回転子鉄心16の外面と平板部2の外面
とを略面一にすると、ケース1の最小の扁平化を
図ることができ、しかも回転子鉄心16がケース
1の外方へ突出せず、回転部分がモータの取付面
に当たらない。 On the other hand, in the rotor 14, 15 is a shaft, 16 is a rotor core, 17 is a coil, 18 is a thrust regulating ring, 19 is a commutator, and 20 is a noise prevention element such as a varistor. The outer diameter of the core of this rotor 14
b' is approximately equal to the distance h between the outer surfaces of the flat plate portion of the case 1, and the axial length l of the exposed window 6 is slightly larger than the axial length a' of the iron core 16. By making the outer surface of the rotor core 16 and the outer surface of the flat plate part 2 substantially flush with each other in this way, the case 1 can be made as flat as possible, and the rotor core 16 can not protrude outward from the case 1. The rotating part does not touch the mounting surface of the motor.
回転子14は切起片7b,7cによる切起し開
口7aを利用して挿入され、軸15を軸受9に通
すと鉄心16の外周部が露出窓6に位置する。そ
こで、連接片7の切起片7b,7cをもとの位置
に倒し、磁路の一部となす。またケース1の開口
5に軸受台21を嵌着するがこの軸受台21にお
いて、22は含油軸受、23は端子、24は刷子
保持ばね、25はカーボン刷子である。 The rotor 14 is inserted using the cut and raised opening 7a formed by the cut and raised pieces 7b and 7c, and when the shaft 15 is passed through the bearing 9, the outer peripheral part of the iron core 16 is located in the exposed window 6. Therefore, the cut and raised pieces 7b and 7c of the connecting piece 7 are brought down to their original positions to form part of the magnetic path. Further, a bearing stand 21 is fitted into the opening 5 of the case 1, and in this bearing stand 21, 22 is an oil-impregnated bearing, 23 is a terminal, 24 is a brush holding spring, and 25 is a carbon brush.
以上のように、この考案の小型モータは、回転
子と、この回転子を挿入させる開口を一端に有す
る扁平筒形であつて前記回転子の鉄心の外周部を
出させる露出窓を扁平側の平板部に形成するとと
もに前記露出窓と前記開口との間を閉じる連接片
を切起片により形成した磁性のケースと、このケ
ースの前記平板部に隣接する側板の内側に配設さ
れたマグネツトとを備えたため、つぎの作用効果
がある。 As described above, the small motor of this invention has a flat cylindrical shape having a rotor and an opening at one end into which the rotor is inserted. a magnetic case in which a connecting piece is formed on a flat plate part and a connecting piece that closes between the exposed window and the opening is formed by a cut-and-raised piece; a magnet disposed inside a side plate adjacent to the flat plate part of the case; It has the following effects.
すなわち、連接片に切起片を形成することによ
り回転子をケース内に挿入できるので回転子の鉄
心を露出窓から露出させた分ケースを扁平にで
き、しかも回転子を挿入後連接片を閉じることに
より連接片が切起片でない状態のほとんど同じに
なり、連設片を切起したままの場合と比較してケ
ースの磁路が増大し、ケースの有効磁路断面が大
きくなり磁気抵抗が小さくかつ漏洩磁束が減るた
め有効磁束を増大することができる。したがつ
て、高トルクの小型モータが得られ、従来に比し
て出力、性能ともに改善されるという効果があ
る。 In other words, the rotor can be inserted into the case by forming a cut-and-raised piece on the connecting piece, so the case can be made flat by exposing the rotor's core through the exposure window, and the connecting piece can be closed after the rotor is inserted. As a result, the connecting piece becomes almost the same as when it is not a cut and raised piece, and compared to the case where the connecting piece is cut and raised, the magnetic path of the case increases, the effective magnetic path cross section of the case becomes larger, and the magnetic resistance increases. Since it is small and leakage magnetic flux is reduced, effective magnetic flux can be increased. Therefore, a small motor with high torque can be obtained, which has the effect of improving both output and performance compared to the conventional motor.
第1図はこの考案の一実施例の半断面側面図、
第2図はその−線断面図、第3図はケースの
連接片の切起しおよび切倒し状態を示す斜視図、
第4図および第5図は従来例の斜視図である。
1……ケース、2……平板部、3……円弧側
板、6……露出窓、7……連接片、7a……切起
し開口、7b,7c……切起片、11,12……
マグネツト、14……回転子。
FIG. 1 is a half-sectional side view of an embodiment of this invention.
Fig. 2 is a sectional view taken along the - line, Fig. 3 is a perspective view showing the state in which the connecting piece of the case is cut up and cut down;
4 and 5 are perspective views of the conventional example. DESCRIPTION OF SYMBOLS 1... Case, 2... Flat plate part, 3... Arc side plate, 6... Exposed window, 7... Connecting piece, 7a... Cut-and-raised opening, 7b, 7c... Cut-and-raise piece, 11, 12... …
Magnet, 14...rotor.
Claims (1)
に有する扁平筒形であつて前記回転子の鉄心の外
周部を出させる露出窓を扁平側の平板部に形成す
るとともに前記露出窓と前記開口との間を閉じる
連接片を切起片により形成した磁性のケースと、
このケースの前記平板部に隣接する側板の内側に
配設されたマグネツトとを備えた小型モータ。 A rotor and an exposed window which has a flat cylindrical shape at one end having an opening into which the rotor is inserted and which exposes the outer circumference of the iron core of the rotor are formed in the flat plate part on the flat side, and the exposed window and the opening. A magnetic case with a connecting piece formed by a cut and raised piece,
and a magnet disposed inside a side plate adjacent to the flat plate portion of the case.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4702182U JPS58150383U (en) | 1982-03-31 | 1982-03-31 | small motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4702182U JPS58150383U (en) | 1982-03-31 | 1982-03-31 | small motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58150383U JPS58150383U (en) | 1983-10-08 |
JPH0416626Y2 true JPH0416626Y2 (en) | 1992-04-14 |
Family
ID=30057996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4702182U Granted JPS58150383U (en) | 1982-03-31 | 1982-03-31 | small motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58150383U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006271147A (en) * | 2005-03-25 | 2006-10-05 | Nidec Sankyo Corp | Motor case and its manufacturing method |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6031420Y2 (en) * | 1977-04-08 | 1985-09-19 | マブチモ−タ−株式会社 | Rectangular parallelepiped small motor |
JPS57108675U (en) * | 1980-12-24 | 1982-07-05 |
-
1982
- 1982-03-31 JP JP4702182U patent/JPS58150383U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS58150383U (en) | 1983-10-08 |
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