JPH0510903B2 - - Google Patents
Info
- Publication number
- JPH0510903B2 JPH0510903B2 JP62220165A JP22016587A JPH0510903B2 JP H0510903 B2 JPH0510903 B2 JP H0510903B2 JP 62220165 A JP62220165 A JP 62220165A JP 22016587 A JP22016587 A JP 22016587A JP H0510903 B2 JPH0510903 B2 JP H0510903B2
- Authority
- JP
- Japan
- Prior art keywords
- pole
- magnetic flux
- permanent magnet
- angle
- auxiliary pole
- 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 - Lifetime
Links
- 230000007935 neutral effect Effects 0.000 claims description 22
- 239000007858 starting material Substances 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000004907 flux Effects 0.000 description 28
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Dc Machiner (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、永久磁石界磁形スタータに係り、特
に内燃機関始動用に好適な永久磁石界磁形スター
タに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a permanent magnet field type starter, and particularly to a permanent magnet field type starter suitable for starting an internal combustion engine.
〔従来の技術〕
永久磁石界磁形スタータは、ヨーク内周に所定
数配設された永久磁石の磁束を電機子コイルに鎖
交させ、この磁束と電機子コイル通電による電機
子反作用を利用してトルクを得るもので、この種
のスタータは、エンジンルームのスペースの制約
から小形にして高出力化を図り得るものが望まれ
ている。なお、永久磁石利用の回転機の従来例と
しては、例えば実開昭61−98360号公報に開示さ
れたものがある。[Prior Art] A permanent magnet field type starter links the magnetic flux of a predetermined number of permanent magnets arranged around the inner circumference of the yoke to the armature coil, and uses this magnetic flux and the armature reaction caused by energization of the armature coil. This type of starter is desired to be compact and capable of high output due to space constraints in the engine room. Note that, as a conventional example of a rotating machine using permanent magnets, there is one disclosed in, for example, Japanese Utility Model Application Publication No. 61-98360.
スタータの小形化を図るためには、通常、永久
磁石の軸方向の長さを短かくする必要があり、反
面、高出力を図るためには、短かくなつた永久磁
石で長かつた永久磁石分の磁束を確保しなければ
ならない。このような両者の要求を満足させるた
めには、汎用タイプの永久磁石に代えて高価な磁
石を使うことが考えられるが、コスト高となり、
そのため、従来より、低コストで有効磁束の増加
を図る種々の配慮がなされ、例えば、界磁極を永
久磁石とこの磁石の有効磁束の増加を図る補助極
（磁性体）とで構成する等している。 In order to make the starter more compact, it is usually necessary to shorten the axial length of the permanent magnet.On the other hand, in order to achieve high output, it is necessary to use a shorter permanent magnet and a longer permanent magnet. magnetic flux must be secured. In order to satisfy both of these demands, it may be possible to use expensive magnets instead of general-purpose permanent magnets, but this would result in high costs and
Therefore, various considerations have been made to increase the effective magnetic flux at low cost, for example, by configuring the field pole with a permanent magnet and an auxiliary pole (magnetic material) that increases the effective magnetic flux of this magnet. There is.
ところで、永久磁石と補助極とを組合せた従来
の永久磁石界磁形スタータにおけるNS極間の中
性帯角度（補助極と異極側磁石との間の角度）
は、一般にブラシの整流問題から比較的広くとら
れ、通常は、（ブラシ幅）＋２（電機子スロツトピ
ツチ）の大きさにとるのが通例であり、狭い角度
のものでも（ブラシ幅）＋４（磁石内径と電機子外
径のギヤツプ長）をとるもので、いづれも電機子
スロツトピツチの1.3〜3.0倍程度であつた。その
ため、永久磁石を一定幅として考えた場合、補助
極の幅が抑制され、その分増加すべき有効磁束量
にも限度がありスタータの出力向上化の点で改善
すべき点があつた。
By the way, the neutral zone angle between the NS poles (the angle between the auxiliary pole and the different-pole side magnet) in a conventional permanent magnet field type starter that combines a permanent magnet and an auxiliary pole.
is generally set relatively wide due to brush rectification problems, and is usually set to (brush width) + 2 (armature slot pitch), and even for narrow angles (brush width) + 4 (magnet slot pitch). The gap length between the inner diameter and the armature outer diameter is approximately 1.3 to 3.0 times the armature slot pitch. Therefore, when the permanent magnet is assumed to have a constant width, the width of the auxiliary pole is suppressed, and there is a limit to the amount of effective magnetic flux that should be increased by that amount, and there are points that need to be improved in terms of increasing the output of the starter.
本発明の目的は、補助極と空間をもつて隣接す
る異極永久磁石との中性帯角度を適切にすること
によつて、有効磁束を増加させて小形で高出力の
永久磁石界磁形スタータを提供するにある。 An object of the present invention is to increase the effective magnetic flux by optimizing the neutral zone angle between the auxiliary pole and the different-polar permanent magnets adjacent to each other with a space, thereby creating a small and high-output permanent magnet field. It is there to provide a starter.
本発明は、上記目的を達成するため、次の点に
着目して下述の手段を採用する。すなわち、上記
従来技術は、整流問題を重視するため補助極幅を
抑制しているが、小形で数秒間しか始動しないス
タータについては、整流問題は比較的無視するこ
とが可能であること、及び、中性帯角度を変化さ
せて実験的に測定すると、限られた寸法で、より
多くの磁束を得るためには、中性帯角度が電機子
スロツトピツチ付近が最良であることが判り、以
上の点から種々検討して、発明を次のように構成
するものである。
In order to achieve the above object, the present invention focuses on the following points and employs the following means. That is, although the above-mentioned prior art suppresses the auxiliary pole width in order to emphasize the rectification problem, the rectification problem can be relatively ignored for a small starter that starts for only a few seconds; By experimentally measuring the neutral band angle by varying the angle, it was found that in order to obtain more magnetic flux with limited dimensions, the best neutral band angle is near the armature slot pitch. After various studies, the invention is constructed as follows.
本発明の理解を容易にするため、第１図の実施
例の符号を引用して説明すると、本発明は、ヨー
ク１と、界磁極２，３，４と、電機子鉄心５とを
有する永久磁石界磁形スタータであつて、
ヨーク１は、環状に形成されてなり、
界磁極２，３，４は、それぞれ電機子反作用の
増磁側に接して固着される磁性材料からなる補助
極４を有するＮ極磁石２と、Ｓ極磁石３とから構
成され、ヨーク１の内周面に交互に、かつ空間を
もつて等間隔に配置固定されてなり、
電機子鉄心５は、電機子コイル８を巻装するス
ロツトを等間隔に有して前記界磁極２，３，４と
回転空隙をもつて対向してなり、
前記補助極４と空間をもつて隣接する異極永久
磁石との中性帯角度X°を、前記スロツトのピツ
チ角度X1°からスロツト開口部７間の最大角度X2°
までの範囲としてある。 In order to facilitate understanding of the present invention, referring to the reference numerals of the embodiment shown in FIG. It is a magnet field type starter, and the yoke 1 is formed in an annular shape, and the field poles 2, 3, and 4 are auxiliary poles 4 made of a magnetic material fixed in contact with the magnetizing side of the armature reaction, respectively. The armature core 5 is composed of N-pole magnets 2 and S-pole magnets 3, which are fixed to the inner peripheral surface of the yoke 1 alternately and at equal intervals with a space between them. 8 are wound at equal intervals, and are opposed to the field poles 2, 3, and 4 with a rotational gap between them, and between the different polarity permanent magnets adjacent to the auxiliary pole 4 with a space therebetween. The gender band angle X° is calculated from the pitch angle of said slot X 1 ° to the maximum angle between the slot openings 7
The range is up to.
〔作用〕
このような構成よりなる本発明によれば、ヨー
ク１を介して補助極４を通る補助磁束が図の点線
に示すようにコイル８を鎖交し、漏洩磁束の発生
を有効に防止し、特に中性帯角度X°がX1°〜X2°
の範囲にある場合には、必要な分だけ補助極４の
幅を大きくして補助極４からコイル８に鎖交する
有効磁束量を増加させるので、スタータの高出力
化を図り得ると共に、その磁束量の増加分だけ界
磁極ひいてはスタータ全体の軸長の短縮化、小型
化を図ることができる。[Operation] According to the present invention having such a configuration, the auxiliary magnetic flux passing through the auxiliary pole 4 via the yoke 1 interlinks the coil 8 as shown by the dotted line in the figure, effectively preventing the generation of leakage magnetic flux. and especially when the neutral zone angle X° is between X 1 ° and X 2 °
If the width is within the range of The axial length and size of the field pole and the starter as a whole can be reduced by the increase in the amount of magnetic flux.
本発明の一実施例を第１図に基づき説明する。 An embodiment of the present invention will be described based on FIG.
第１図は本発明の一実施例を示す要部断面図で
ある。図中、１はスタータのヨークで、ヨーク１
の内周面に円周方向に界磁極を構成すべき永久磁
石２（Ｎ極）、３（Ｓ極）が交互に等間隔で配置
されている。４は各永久磁石２，３と組をなして
界磁極の一部を構成する補助極（磁性材）で、各
永久磁石２，３の増磁側で電機子反作用効果を補
助する側に接して固着されている。この補助極４
と隣側の異極永久磁石３との間の中性帯角度を
X°とする。 FIG. 1 is a sectional view of a main part showing an embodiment of the present invention. In the figure, 1 is the yoke of the starter, and yoke 1
Permanent magnets 2 (N pole) and 3 (S pole), which constitute field poles, are arranged alternately at equal intervals on the inner peripheral surface of the magnet in the circumferential direction. Reference numeral 4 denotes an auxiliary pole (magnetic material) that forms part of the field pole in combination with each permanent magnet 2, 3, and is in contact with the side that assists the armature reaction effect on the magnetizing side of each permanent magnet 2, 3. It is fixed. This auxiliary pole 4
The neutral zone angle between and the adjacent different polarity permanent magnet 3 is
Let it be X°.
５は前記界磁極２，３，４に回転空隙をもつて
対向する電機子鉄心で、電機子鉄心５の外周部に
等間隔で複数のスロツト６を形成し、この中にコ
イル８を埋設する。スロツト６の外周部にスリツ
ト状のスロツト開口７を設け、磁束がコイル８と
鎖交するように形成されている。ここでスロツト
ピツチX1°とする。また、電機子鉄心５の隣り合
うスロツト開口７，７同士の間の最大角度をX2°
とする。 Reference numeral 5 denotes an armature core that faces the field poles 2, 3, and 4 with a rotational gap, and a plurality of slots 6 are formed at equal intervals on the outer periphery of the armature core 5, and coils 8 are embedded in these slots. . A slit-like slot opening 7 is provided on the outer periphery of the slot 6 so that the magnetic flux interlinks with the coil 8. Here, let the slot pitch be X 1 °. In addition, the maximum angle between the adjacent slot openings 7, 7 of the armature core 5 is X 2 °.
shall be.
そして、本実施例では各界磁極の補助極４と空
間をもつて隣接する異極側の永久磁石３との間の
中性帯角度X°を、スロツトピツチ角X1°から隣り
合うスロツト開口７，７間の最大角度X2°までの
範囲内に設定してなる。 In this embodiment, the neutral zone angle X° between the auxiliary pole 4 of each field pole and the permanent magnet 3 on the side of a different polarity adjacent to each other with a space is set from the slot pitch angle X 1 ° to the adjacent slot opening 7, The maximum angle between 7 and 2 degrees is set within the range.
このような構成によれば、補助極３の有効磁束
通路が増えることにより第１図の点線で示すよう
に補助極３を通る有効磁束が増加し、コイル８を
鎖交して漏洩してしまう磁束の量が有効に防止さ
れる。特に中性帯角度X°がX1°〜X2°の範囲にあ
る場合には、必要な分だけ補助極４の幅を大きく
して補助磁極の有効磁束量を増加させるので、ス
タータの高出力化を図り得る。 According to such a configuration, as the effective magnetic flux path of the auxiliary pole 3 increases, the effective magnetic flux passing through the auxiliary pole 3 increases as shown by the dotted line in FIG. 1, and it links the coil 8 and leaks. The amount of magnetic flux is effectively prevented. In particular, when the neutral zone angle Output can be achieved.
ここで、上記実施例と比較するため、中性帯角
度X°がX1°〜X2°の範囲外のものを第２図及び第
３図に例示する。 Here, in order to compare with the above-described embodiment, an example in which the neutral zone angle X° is outside the range of X1 ° to X2 ° is shown in FIGS. 2 and 3.
第２図の比較例は、スロツト開口間最大角度
X2°より中性帯角度X°の方が大きい場合で、この
場合にも点線に示すようにコイル８を磁束が鎖交
し、漏洩磁束は無いが、X°＞X2°のため、上記実
施例と比較して補助極４の幅を充分に確保でき
ず、その分補助極４の有効磁束が減少する。ま
た、第３図の比較例は、中性帯角度X°がスロツ
トピツチX1°より小さい場合で、この場合には補
助極の幅を大きくできるものの、磁束の多くが点
線のようにコイル８を鎖交せず、漏洩磁束を生
じ、有効磁束が大幅に減少する。 The comparative example in Figure 2 shows the maximum angle between slot openings.
In the case where the neutral zone angle Compared to the above embodiment, the width of the auxiliary pole 4 cannot be secured sufficiently, and the effective magnetic flux of the auxiliary pole 4 decreases accordingly. Furthermore, in the comparative example shown in Fig. 3, the neutral band angle X° is smaller than the slot pitch No linkage occurs, leakage magnetic flux occurs, and effective magnetic flux decreases significantly.
第４図は、上記中性帯角度X°をスロツトピツ
チX1°及びスロツト開口間の最大角X2°に対し、
種々変化させた場合の磁束量と中性帯角度X°と
の関係を示すもので、磁束量は、スタータのヨー
ク外径φ80、スロツト数25、極数4Pの場合の１極
当りの磁束量で、Ａは永久磁石寸法を一定にして
中性帯角度X°をスロツトピツチX1°よりも小さく
した場合であり、Ｂは漏洩による減磁量を表わし
ており、有効な磁束量は実線Ｃで示されるカーブ
となる。ここで、有効磁束量が最大となる点は、
中性帯角度X°がX1°のところで、X1°未満だと急
激に低下することがわかる。また、中性帯角度
X°がスロツト開口間の最大角度X2°となると磁束
はX1°の場合の約97％となり、更に中性帯角度X°
がX2°以上になると有効磁束量が序々に減少する。
従つて、第４図からも明らかなように、有効磁束
を充分に確保し、出力向上化を図るには、中性帯
角度X°がX1°からX2°の範囲内であれば良い。 Figure 4 shows the above neutral zone angle X° with respect to the slot pitch X 1 ° and the maximum angle between slot openings X 2 °.
This shows the relationship between the amount of magnetic flux and the neutral zone angle X° when various changes are made.The amount of magnetic flux is the amount of magnetic flux per pole when the starter yoke outer diameter is φ80, the number of slots is 25, and the number of poles is 4P. A is the case when the permanent magnet dimensions are constant and the neutral zone angle X ° is smaller than the slot pitch This will be the curve shown. Here, the point where the amount of effective magnetic flux is maximum is
It can be seen that when the neutral zone angle X° is X 1 °, it decreases rapidly when it is less than X 1 °. Also, the neutral band angle
When X° becomes the maximum angle between the slot openings, X 2 °, the magnetic flux becomes approximately 97% of that at X 1 °, and furthermore, when the neutral zone angle becomes X°
When becomes more than X 2 °, the amount of effective magnetic flux gradually decreases.
Therefore, as is clear from Figure 4, in order to secure sufficient effective magnetic flux and improve output, it is sufficient that the neutral zone angle X° is within the range of X 1 ° to X 2 °. .
しかして、本実施例によれば、磁石の材質を高
価なものに変えることなく、補助極を必要限度広
くするだけで、約10％の磁束増加を計ることがで
きる。これは、軸長を10％短かく製作することが
出来ることであり、それだけスタータの小形化を
図り、且つコスト的にも安価にできる効果があ
る。いいかえると同一寸法で、トルクを10％増大
する効果がある。 According to this embodiment, it is possible to increase the magnetic flux by about 10% simply by widening the auxiliary pole to the necessary extent without changing the material of the magnet to an expensive one. This means that the shaft length can be made 10% shorter, which has the effect of making the starter more compact and reducing costs. In other words, it has the effect of increasing torque by 10% with the same dimensions.
以上のように本発明によれば、補助極と空間を
もつて隣接する異極永久磁石との中性帯角度を適
切にすることによつて、有効磁束を増加させて小
形で、高出力の永久磁石界磁形スタータが提供さ
れる。
As described above, according to the present invention, by optimizing the neutral zone angle between the auxiliary pole and the different polarity permanent magnets adjacent to each other with a space, the effective magnetic flux is increased and a compact, high-output A permanent magnet field type starter is provided.
第１図は本発明の一実施例を示す要部断面図、
第２図及び第３図は本発明と異なる中性帯角度の
比較例を示す要部断面図、第４図は中性帯角度を
変えた場合の界磁磁束の変化を示す線図である。
１……ヨーク、２……Ｎ極磁石、３……Ｓ極磁
石、４……補助極、５……電機子鉄心、６……ス
ロツト、７……スロツト開口部、８……コイル。
FIG. 1 is a cross-sectional view of essential parts showing one embodiment of the present invention;
Figures 2 and 3 are cross-sectional views of main parts showing comparative examples of neutral zone angles different from those of the present invention, and Figure 4 is a diagram showing changes in field magnetic flux when the neutral zone angle is changed. . 1... Yoke, 2... N pole magnet, 3... S pole magnet, 4... Auxiliary pole, 5... Armature core, 6... Slot, 7... Slot opening, 8... Coil.
Claims (1)
心５とを有する永久磁石界磁形スタータであつ
て、 ヨーク１は、環状に形成されてなり、 界磁極２，３，４は、それぞれ電機子反作用の
増磁側に接して固着される磁性材料からなる補助
極４を有するＮ極磁石２と、Ｓ極磁石３とから構
成され、ヨーク１の内周面に交互に、かつ空間を
もつて等間隔に配置固定されてなり、 電機子鉄心５は、電機子コイル８を巻装するス
ロツト６を等間隔に有して前記界磁極２，３，４
と回転空隙をもつて対向してなり、 前記補助極４と空間をもつて隣接する異極永久
磁石３との中性帯角度X°を、前記スロツトのピ
ツチ角度X1°からスロツト開口部７間の最大角度
X2°までの範囲としてある永久磁石界磁形スター
タ。[Claims] 1. A permanent magnet field type starter comprising a yoke 1, field poles 2, 3, 4, and an armature core 5, wherein the yoke 1 is formed in an annular shape, and the field poles 2, 3, and 4 each consist of an N-pole magnet 2 having an auxiliary pole 4 made of a magnetic material fixed in contact with the magnetizing side of the armature reaction, and a S-pole magnet 3; The armature core 5 has slots 6, around which the armature coils 8 are wound, arranged and fixed at equal intervals, and the field poles 2, 3, 4.
The neutral zone angle X° between the auxiliary pole 4 and the different polarity permanent magnet 3 which is adjacent to the auxiliary pole 4 with a space therebetween is set from the pitch angle X 1 ° of the slot to the slot opening 7. maximum angle between
Permanent magnet field type starter with a range of up to 2 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22016587A JPS6464549A (en) | 1987-09-04 | 1987-09-04 | Permanent magnet type starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22016587A JPS6464549A (en) | 1987-09-04 | 1987-09-04 | Permanent magnet type starter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6464549A JPS6464549A (en) | 1989-03-10 |
| JPH0510903B2 true JPH0510903B2 (en) | 1993-02-12 |
Family
ID=16746905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22016587A Granted JPS6464549A (en) | 1987-09-04 | 1987-09-04 | Permanent magnet type starter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6464549A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982001831A1 (en) * | 1980-11-29 | 1982-06-10 | Tadashi Ii | Tornado generating nozzle and apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6896087B2 (en) * | 2000-09-01 | 2005-05-24 | Brp-Rotax Gmbh & Co. Kg | Component arrangement for an all terrain vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5768655A (en) * | 1980-10-13 | 1982-04-27 | Hitachi Ltd | Permanent magnet field system provided with auxiliary magnetic poles |
| JPS596761A (en) * | 1982-06-17 | 1984-01-13 | コルモーゲン コーポレイション | Rotary electric machine displaced in ripple frequency upwards |
| JPS5989560A (en) * | 1982-11-13 | 1984-05-23 | Hitachi Ltd | Permanent magnet field type dc machine |
| JPS5934484B2 (en) * | 1977-08-31 | 1984-08-23 | 豊田合成株式会社 | Synthetic resin molded product with synthetic resin insert |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5934484U (en) * | 1982-08-24 | 1984-03-03 | 三菱電機株式会社 | magnetic motor |
| JPS60108185U (en) * | 1983-12-26 | 1985-07-23 | 株式会社日立製作所 | DC motor |
-
1987
- 1987-09-04 JP JP22016587A patent/JPS6464549A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5934484B2 (en) * | 1977-08-31 | 1984-08-23 | 豊田合成株式会社 | Synthetic resin molded product with synthetic resin insert |
| JPS5768655A (en) * | 1980-10-13 | 1982-04-27 | Hitachi Ltd | Permanent magnet field system provided with auxiliary magnetic poles |
| JPS596761A (en) * | 1982-06-17 | 1984-01-13 | コルモーゲン コーポレイション | Rotary electric machine displaced in ripple frequency upwards |
| JPS5989560A (en) * | 1982-11-13 | 1984-05-23 | Hitachi Ltd | Permanent magnet field type dc machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982001831A1 (en) * | 1980-11-29 | 1982-06-10 | Tadashi Ii | Tornado generating nozzle and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6464549A (en) | 1989-03-10 |
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