JPS63220747A - Motor - Google Patents
MotorInfo
- Publication number
- JPS63220747A JPS63220747A JP62054507A JP5450787A JPS63220747A JP S63220747 A JPS63220747 A JP S63220747A JP 62054507 A JP62054507 A JP 62054507A JP 5450787 A JP5450787 A JP 5450787A JP S63220747 A JPS63220747 A JP S63220747A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- magnet rotor
- motor
- stator
- oil
- 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
Links
- 239000011148 porous material Substances 0.000 claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 8
- 230000001050 lubricating effect Effects 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 description 8
- 239000000696 magnetic material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000000748 compression moulding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229910000531 Co alloy Inorganic materials 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000005404 monopole Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 238000004898 kneading Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ビデオテープレコーダやオーディオカセット
テープレコーダ、レコードプレーヤ等の映像・音響機器
に用いられるモータに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a motor used in video/audio equipment such as video tape recorders, audio cassette tape recorders, and record players.
従来の技術
従来のモータとして、例えば、第５図に示すモータがあ
る。2. Description of the Related Art An example of a conventional motor is the motor shown in FIG.
第５図は従来例の側断面図である。図において、このモ
ータ２２は、第１の平面部２３に複数の所定の極に着磁
された円環状の永久磁石２５と、上記第１の平面部２３
と所定の間隙を有して対向し、電気配線部を有するとこ
ろの、磁性材料製の固定子平板２日に施された複数相の
固定子巻線２７とを具備している。前記永久磁石２５は
磁性材料からなるパンクローク２６に前記永久磁石２５
の第２の平面部２４を当接して固着されており、モータ
軸２９と一体的に回転する。前記モータ軸２９は前記固
定子平板２８に取り付けられた軸受部材３０の軸受３０
ａならびに軸受３０ｂに嵌合し、回転自在に軸承されて
いる。また、前記バックヨーク２６の端面部が前記軸受
部材３０の軸受３０ｂに当接し、前記永久磁石２５の磁
力の吸引力によるスラスト荷重を前記軸受３０ｂにて受
ける構成になっている。前記軸受部材３０の軸受３０ａ
ならびに軸受３０ｂは、一般にボールベアリング等から
構成されている。FIG. 5 is a side sectional view of a conventional example. In the figure, this motor 22 includes an annular permanent magnet 25 magnetized to a plurality of predetermined poles on a first plane part 23, and
The stator winding 27 is provided with a plurality of phases of stator windings 27 formed on a flat stator plate made of a magnetic material and facing each other with a predetermined gap therebetween and having an electric wiring section. The permanent magnet 25 is attached to a punch cloak 26 made of a magnetic material.
The motor shaft 29 rotates integrally with the motor shaft 29 . The motor shaft 29 is connected to a bearing 30 of a bearing member 30 attached to the stator flat plate 28.
a and a bearing 30b, and are rotatably supported. Further, the end face portion of the back yoke 26 contacts the bearing 30b of the bearing member 30, and the bearing 30b receives a thrust load due to the magnetic attraction force of the permanent magnet 25. Bearing 30a of the bearing member 30
The bearing 30b is generally composed of a ball bearing or the like.
発明が解決しようとする問題点
しかしながら、前記のように構成された従来のモータ２
２は、軸受部材３０を必要とし、軸受部材３０の軸受３
０ａならびに軸受３０ｂは、一般にボールベアリング等
から構成されているため、非常に高価なものになってい
た。またモータ軸２９を前記軸受３０ａ、３０ｂにて精
度よく支承保持するために、軸受部材３０を機械加工に
て高精度で製作する必要があり、モータの量産性ならび
にコストダウンを妨げていた。Problems to be Solved by the Invention However, the conventional motor 2 configured as described above
2 requires a bearing member 30, and the bearing 3 of the bearing member 30
Since the bearing 30a and the bearing 30b are generally composed of ball bearings or the like, they are very expensive. Furthermore, in order to accurately support and hold the motor shaft 29 in the bearings 30a and 30b, it is necessary to manufacture the bearing member 30 with high precision by machining, which hinders mass production and cost reduction of the motor.
本発明は前記問題点に鑑みてなされたものであり、軸受
部材３０ならびに軸受３０ａ、３０ｂが不要てあり、部
品点数の少ない、安価なモータを提供するものである。The present invention has been made in view of the above problems, and provides an inexpensive motor that does not require the bearing member 30 and the bearings 30a and 30b, and has a small number of parts.
問題点を解決するための手段
前記問題点透解決するために、本発明のモータは、固定
軸と、子の固定軸に回転自在に支承され、気孔部を有し
、その気孔部に油を含浸させた固定磁化された永久磁石
回転Ｙと、その永久磁石回転子に対向配置された固定子
巻線を含めてなる固定子と査具備するものである。Means for Solving the Problems In order to solve the above-mentioned problems, the motor of the present invention has a fixed shaft and a child fixed shaft rotatably supported, has a pore portion, and has oil injected into the pore portion. The rotor is equipped with a stator including a permanent magnet rotor Y that is impregnated and fixedly magnetized, and a stator winding arranged opposite to the permanent magnet rotor.
作用
本発明は、前記した構成により、従来例に示すような高
価な軸受部材が不要となり、部品点数の少ない安価な、
量産に適したモータを実現することができる。Effects The present invention, with the above-described configuration, eliminates the need for an expensive bearing member as shown in the conventional example, and provides an inexpensive bearing member with a small number of parts.
A motor suitable for mass production can be realized.
実施例
以下、本発明の一実施例について第１図〜第４図を参照
しながら説明する。EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 4.
第１図は本発明の第１の実施例の側断面図である。第１
図において、この第１の実施例のモータＩは、第１の平
面部２に所定の極数の着磁が側され、第２の平面部３に
は磁性材料製のバックヨーク５が当接して固着されてい
る円環状または円板状の永久磁石回転子４と、前記第１
の平面部２に対向して固定子＠＆Ｉ６が磁性材料製の固
定子平板７上に施された固定子８を具備してなる。前記
固定子平板７には固定軸９が植設され、その固定軸９に
は前記永久磁石回転子４の中心部に設けられた孔部４ａ
が嵌合し、前記永久磁石回転子４は前記固定軸９に回転
自在に支承されている。前記永久磁石回転子４は気孔部
（図示せず）を有する磁石であって、その気孔部には、
前記固定軸９と前記永久磁石回転子４の摺動面を潤滑す
るための油が含浸されている。前配赤久磁石四転子４の
製法であるが、一般に前記永久磁石回転子４がフェライ
ト、希土類コバルト合金等で構成さねている場合、前記
フェライト、希土類コバルト合金等の粉末を金型を用い
て加圧成形、圧縮成形等の手段により成形した後装、結
するか、あるいはホットプレス法にて焼結した後、ｉ械
加工し、て作られる。したがって、前１；永久磁石凹転
子４中に気孔部を形成するためには、たとえば成形時の
加圧値を低く設定し、永久磁石回転’７−４の密変を小
さくするか、あるいは焼結温度を低く設定して焼結すれ
ばよい。FIG. 1 is a side sectional view of a first embodiment of the invention. 1st
In the figure, in the motor I of the first embodiment, a first flat part 2 is magnetized with a predetermined number of poles, and a second flat part 3 is in contact with a back yoke 5 made of a magnetic material. an annular or disc-shaped permanent magnet rotor 4 fixed to the rotor;
The stator @&I6 is provided with a stator 8 provided on a stator flat plate 7 made of a magnetic material, facing the flat portion 2 of the stator @&I6. A fixed shaft 9 is embedded in the stator flat plate 7, and the fixed shaft 9 has a hole 4a provided in the center of the permanent magnet rotor 4.
The permanent magnet rotor 4 is rotatably supported by the fixed shaft 9. The permanent magnet rotor 4 is a magnet having pores (not shown), and the pores include:
The sliding surfaces of the fixed shaft 9 and the permanent magnet rotor 4 are impregnated with oil for lubricating them. Regarding the manufacturing method of the front Akaku magnet four rotor 4, in general, when the permanent magnet rotor 4 is made of ferrite, rare earth cobalt alloy, etc., powder of the ferrite, rare earth cobalt alloy, etc. is placed in a mold. After that, the lining is molded using pressure molding, compression molding, etc., or sintered using a hot press method, and then subjected to i-machine processing. Therefore, in order to form the pores in the permanent magnet concave rotor 4, for example, the pressure value during molding may be set low to reduce the density variation of the permanent magnet rotation '7-4, or Sintering may be performed by setting a low sintering temperature.
しかる後に真空雰囲気中、もしくは低圧雰囲気中にて潤
滑用の油をＳ前記永久磁石回転子４に含浸するのである
。また、前記永久磁石回転子４がポリアミド樹脂等に、
−性材料製粉末を混練してなる樹脂磁石製″７″、ある
場合は１、あらかじめ樹脂磁石の成形用ベレ・、トを製
作する際に、前記潤滑用の油を混入して成形用ベレット
とし２．この成形用ベレットを用いて射出成形、圧縮成
形等の成形手段で永久磁石回転子４を製造すればよい。Thereafter, the permanent magnet rotor 4 is impregnated with lubricating oil in a vacuum atmosphere or a low pressure atmosphere. Moreover, the permanent magnet rotor 4 is made of polyamide resin or the like,
- "7" resin magnet made by kneading powder made of a synthetic material, in some cases 1, when making the molding bellet of the resin magnet in advance, the above-mentioned lubricating oil is mixed into the molding pellet. Toshi 2. The permanent magnet rotor 4 may be manufactured by a molding method such as injection molding or compression molding using this molding pellet.
もしくは樹脂と磁外材料製粉末を加熱混練し、粉砕し７
て製造した成形用ベレットｃ発泡材等を加え、射出成形
、圧縮成形等の成形手段にて気孔部を有する永久磁石回
転子４を成形し、これに潤滑用の油を含浸させてもよい
、このような前記永久磁石回転７４が固定軸９に支承さ
れて回転する場合９．当初前記固定軸９と前記永久磁石
回転子４の孔部４ａが接触、しで、前記孔部４ａの表面
が摩滅することにより、５気孔部に含浸された油が前記
固定軸９と前記孔部４ ａの間に供給される。この油の
潤滑作用によ、。Alternatively, heat-knead and crush resin and non-magnetic material powder7.
A molding pellet c foamed material etc. manufactured using the above method may be added, and a permanent magnet rotor 4 having pores may be formed by a molding method such as injection molding or compression molding, and this may be impregnated with lubricating oil. 9. When the permanent magnet rotation 74 is supported by the fixed shaft 9 and rotates. Initially, the fixed shaft 9 and the hole 4a of the permanent magnet rotor 4 come into contact, and as a result, the surface of the hole 4a is abraded, causing the oil impregnated in the 5 pores to come into contact with the fixed shaft 9 and the hole. Part 4 is supplied between parts a. Due to the lubricating effect of this oil.
て前記永久磁石回転子４の孔部４ａと固定軸９は焼きイ
１くことはなく、前記孔部４ａの摩耗は非常に小さくな
る。このように構成ｔ７た本発明のモ・−タ１は、ボー
ルベアリング等の軸受部材を全く必要と甘ず、モータの
部品点数の低減ならびにコストダウンを容易に図ること
ができる。Therefore, the hole 4a of the permanent magnet rotor 4 and the fixed shaft 9 will not burn out, and the wear of the hole 4a will be extremely small. The motor 1 of the present invention constructed as described above does not require any bearing members such as ball bearings, and the number of motor parts and costs can be easily reduced.
第２図に、本発明の第２の実施例の側断面図を、第３図
に同実施例の永久磁石回転子の平面図を示す、第１の実
施例と異なる点は、永久磁石回転子１１のスラスト吸引
力を低減するために、前記永久磁石回転子１１に対向し
て固定子平板７上に円環状の固定単極磁石１２を設けた
点である。第３図の斜線で示すように、前記永久磁石回
転子１１の第２の平面部２上の内周部には、単極に着磁
された単極着磁部１１ａ （本実施例の場合はＳ極に着
磁されている）が設けられている。また前記固定単極磁
石１２（本実施例の場合はＳ極に着磁されている）の直
径をＤｌとし、前記永久磁石回転子１１の単極着磁部１
１ａと前記永久磁石回転子１１の逆位相極（本実施例の
場合はＮ極）との円周方向の境界１１ｂにより略々形成
される円の直径をＤ２とすればＤ１≦Ｄ２となるように
構成している。このように前記永久磁石回転子１１の単
極着磁部１１ａと前記固定単極磁石１２は、同極に着磁
されて対向配置されているので、磁気反発力が前記永久
磁石回転子１１と前記固定単極磁石１２の間に発生する
ことになる。したがって、前記固定単極磁石１２の磁気
強度を、前記永久磁石回転子１１のスラスト吸引力と永
久磁石回転子１１の自重を加えた大きさ以上に設定して
おけば、前記永久磁石回転子１１のスラスト荷重を支承
するスラスト軸受は不要であり、前記永久磁石回転子１
１のスラスト摩耗も全くない。Fig. 2 shows a side sectional view of a second embodiment of the present invention, and Fig. 3 shows a plan view of a permanent magnet rotor of the same embodiment. In order to reduce the thrust attraction force of the child 11, an annular fixed monopole magnet 12 is provided on the stator flat plate 7, facing the permanent magnet rotor 11. As shown by diagonal lines in FIG. 3, a unipolar magnetized portion 11a (in this embodiment is magnetized to the S pole). Further, the diameter of the fixed unipolar magnet 12 (in this embodiment, it is magnetized to the S pole) is Dl, and the unipolar magnetized portion 1 of the permanent magnet rotor 11 is
1a and the opposite phase pole (in the case of this embodiment, the N pole) of the permanent magnet rotor 11, and if the diameter of the circle approximately formed by the boundary 11b in the circumferential direction is D2, then D1≦D2. It is composed of In this way, the unipolar magnetized portion 11a of the permanent magnet rotor 11 and the fixed unipolar magnet 12 are magnetized to the same polarity and are disposed facing each other. This will occur between the fixed monopole magnets 12. Therefore, if the magnetic strength of the fixed single-pole magnet 12 is set to be greater than or equal to the sum of the thrust attraction force of the permanent magnet rotor 11 and the weight of the permanent magnet rotor 11, the permanent magnet rotor 11 There is no need for a thrust bearing to support the thrust load of the permanent magnet rotor 1.
There is no thrust wear at all.
第４図は本発明のモータを回転ヘッドシリンダーに適用
した側断面図である。同図において、回転ヘッドシリン
ダー１３は、磁気ヘッド（図示せず）ならびに前記磁気
ヘッドに接続された回転側ロータリートランスＩ７とを
載置した上シリンダ−１４と、固定軸１６が植立され、
固定子巻線２０を含めてなる固定子平板２１ならびに固
定側ロータリートランス１８を有する下シリンダ−１５
を、対向配置することにより構成されている。FIG. 4 is a side sectional view of the motor of the present invention applied to a rotating head cylinder. In the figure, the rotating head cylinder 13 includes an upper cylinder 14 on which a magnetic head (not shown) and a rotating side rotary transformer I7 connected to the magnetic head are placed, and a fixed shaft 16.
A lower cylinder 15 having a stator flat plate 21 including a stator winding 20 and a fixed rotary transformer 18.
are arranged facing each other.
永久磁石回転子１９は前記固定子平板２１に対向して前
記上シリンダ−１４と一体的に回転するように前記上シ
リンダ−１４に固着され、前記固定軸１６に回転自在に
支承されている。上記のように構成した回転ヘッドシリ
ンダー１３は、永久磁石回転子１９が自己潤滑しながら
回転するので、従来用いられていたボールベアリング等
の軸受を必要とせず、したがって容易に回転ヘッドシリ
ンダーのコストダウンを実現できるのである。A permanent magnet rotor 19 is fixed to the upper cylinder 14 so as to face the stator flat plate 21 and rotate integrally with the upper cylinder 14, and is rotatably supported by the fixed shaft 16. In the rotating head cylinder 13 configured as described above, the permanent magnet rotor 19 rotates while self-lubricating, so there is no need for bearings such as conventionally used ball bearings, and therefore the cost of the rotating head cylinder can be easily reduced. It is possible to achieve this.
本発明のモータは上記した回転ヘッドシリンダーのみな
らず、例えば磁気記録再生装置の直接駆動型リール台の
モータや、直接駆動型のキャプスタンモータ等、非常に
幅広い分野で用いることができるのである。The motor of the present invention can be used not only in the above-mentioned rotary head cylinder, but also in a very wide range of fields, such as a direct drive type reel stand motor for a magnetic recording/reproducing device, a direct drive type capstan motor, etc.
発明の効果
以上のように本発明は、固定軸と、その固定軸に回転自
在に支承され、固定磁化された永久磁石回転子と、その
永久磁石回転子に対向配置された固定子巻線を含めてな
る固定子とを具備し、前記永久磁石回転子は気孔部を有
し、その気孔部に油を含浸させた、ことを特徴としてい
るので、従来例に示すようなボールベアリ゛２・グ等の
高価な軸受部材が一切不要となり、部品点数の少ない安
価な、量産に適し７たモータを実現することができると
いう優れた効果が得られる。Effects of the Invention As described above, the present invention comprises a fixed shaft, a permanent magnet rotor rotatably supported on the fixed shaft and fixedly magnetized, and a stator winding arranged opposite to the permanent magnet rotor. The permanent magnet rotor has pores, and the pores are impregnated with oil. This eliminates the need for expensive bearing members such as 7, etc., resulting in the excellent effect of realizing an inexpensive motor with a small number of parts and suitable for mass production.
第１図は本発明の第１の実施例の側断面図、第２図は本
発明の第２の実施例の側断面図、第３図は同実施例の永
久磁石回転子の平面図、第４図は本発明のモータを回転
ヘッドシリンダーに通用した側断面図、第５図は従来例
のモータの側断面図である。
４・・・・・・永久磁石回転子、９・・・・・・固定軸
、６・・・・・・固定子巻線、８・・・・・・固定子。FIG. 1 is a side sectional view of a first embodiment of the present invention, FIG. 2 is a side sectional view of a second embodiment of the present invention, and FIG. 3 is a plan view of a permanent magnet rotor of the same embodiment. FIG. 4 is a side sectional view of the motor of the present invention applied to a rotating head cylinder, and FIG. 5 is a side sectional view of a conventional motor. 4... Permanent magnet rotor, 9... Fixed shaft, 6... Stator winding, 8... Stator.
Claims (1)
された永久磁石回転子と、その永久磁石回転子に対向配
置された固定子巻線を含めてなる固定子とを具備し、前
記永久磁石回転子は気孔部を有し、その気孔部に油を含
浸させたことを特徴とするモータ。The stator includes a fixed shaft, a fixed magnetized permanent magnet rotor rotatably supported by the fixed shaft, and a stator winding arranged opposite to the permanent magnet rotor, A motor characterized in that the permanent magnet rotor has pores, and the pores are impregnated with oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62054507A JPS63220747A (en) | 1987-03-10 | 1987-03-10 | Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62054507A JPS63220747A (en) | 1987-03-10 | 1987-03-10 | Motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63220747A true JPS63220747A (en) | 1988-09-14 |
Family
ID=12972552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62054507A Pending JPS63220747A (en) | 1987-03-10 | 1987-03-10 | Motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63220747A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6865744B2 (en) * | 1998-05-15 | 2005-03-08 | Deutsche Thomson-Brandt Gmbh | Disk drive with compensation of disk eccentricity |
| US7692345B2 (en) | 2003-02-18 | 2010-04-06 | Sony Corporation | Vibration-generating device and electronic apparatus using the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5843181B2 (en) * | 1978-11-27 | 1983-09-26 | 日立電線株式会社 | Soldering preliminary treatment method for gold layer material |
| JPS59139849A (en) * | 1983-01-31 | 1984-08-10 | Takahashi Yoshiteru | Disk type brushless motor |
-
1987
- 1987-03-10 JP JP62054507A patent/JPS63220747A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5843181B2 (en) * | 1978-11-27 | 1983-09-26 | 日立電線株式会社 | Soldering preliminary treatment method for gold layer material |
| JPS59139849A (en) * | 1983-01-31 | 1984-08-10 | Takahashi Yoshiteru | Disk type brushless motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6865744B2 (en) * | 1998-05-15 | 2005-03-08 | Deutsche Thomson-Brandt Gmbh | Disk drive with compensation of disk eccentricity |
| US7692345B2 (en) | 2003-02-18 | 2010-04-06 | Sony Corporation | Vibration-generating device and electronic apparatus using the same |
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