JPS6043055A - Motor - Google Patents

Motor

Info

Publication number
JPS6043055A
JPS6043055A JP14979983A JP14979983A JPS6043055A JP S6043055 A JPS6043055 A JP S6043055A JP 14979983 A JP14979983 A JP 14979983A JP 14979983 A JP14979983 A JP 14979983A JP S6043055 A JPS6043055 A JP S6043055A
Authority
JP
Japan
Prior art keywords
rotor
bearing
gravity
center
bearings
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
JP14979983A
Other languages
Japanese (ja)
Inventor
Shinichi Nakajima
信市 中島
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14979983A priority Critical patent/JPS6043055A/en
Publication of JPS6043055A publication Critical patent/JPS6043055A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K29/00Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Brushless Motors (AREA)

Abstract

PURPOSE:To obtain a stable rotation by arranging a rotor through bearings substantially at the center of gravity on a stationary shaft, thereby reducing a torque loss. CONSTITUTION:On end of a stationary shaft 11 is secured to a base 12, and the other end rotatably holes a rotor 14 through bearings 13. The bearings 13 are disposed substantially at the center of gravity of the rotor 14. A rotor magnet 16 is provided through a yoke 15 at the rotor 14, and a stator 18, on which a drive coil 17 is wound, is secured to the base 12 oppositely to the magnet 16. The pole is detected by a sensor 19 for detecting the position of the pole, and a revolving field of the coil 17 is controlled by the signal. The force of the unbalance of the rotor 14 can be suppressed to the minimum limit by holding the bearings 13 substantially at the center of gravity.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は面対向型の無整流子電動機に関するものである
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a surface-opposed commutatorless motor.

従来例の構成とその問題点 第1図により従来の面対向型無整流子電動機の一例を説
明する。
Structure of a conventional example and its problems An example of a conventional surface-opposed non-commutator motor will be explained with reference to FIG.

第1図において、回転軸1を嵌着しだロータ2には環状
ヨーク3及び軸方向に複数極着磁されたロータマグネッ
ト4が装着されており、このロータマグネット4に対向
して駆動コイル5を巻回したステータ6(トロイダル巻
きしたコアに軸方向にスロットを設は駆動コイルを巻回
している)を配設している。7は上記ステ〜りを保持す
ると共に軸受け8,8を保持するハウジングであり、こ
の軸受け8は上記回転軸を枢支している。9は上記ロー
タマグネットの磁極位置を検出するセンサーで、このセ
ンサーの信号に対応してステータに回転磁界を生じさせ
る制御回路を備えている(図示せず)10はスラスト止
メである。
In FIG. 1, a rotor 2 on which a rotating shaft 1 is fitted is fitted with an annular yoke 3 and a rotor magnet 4 magnetized with multiple poles in the axial direction. A stator 6 (a toroidally wound core with slots in the axial direction and around which a drive coil is wound) is provided. A housing 7 holds the above-mentioned stay and also holds bearings 8, 8, and this bearing 8 pivotally supports the above-mentioned rotating shaft. A sensor 9 detects the magnetic pole position of the rotor magnet, and a control circuit (not shown) for generating a rotating magnetic field in the stator in response to a signal from this sensor is provided.A thrust stopper 10 is provided.

上記の構成の面対向型無整流子電動機は2個の軸受け8
を使用して軸1を枢支していた。一般に回転体を枢支す
る軸受けは2個使用するのが普通である。しかし低トル
クで高速のモータにおいては軸受は自体の損失トルクの
影響が無視できないものであり、効率向上の点からは軸
受けの損失トルクは極力低減しだいものであった。
The surface-facing type non-commutator motor with the above configuration has two bearings 8.
was used to pivot shaft 1. Generally, two bearings are used to pivot the rotating body. However, in a low-torque, high-speed motor, the influence of the bearing's own torque loss cannot be ignored, and from the standpoint of improving efficiency, it has been necessary to reduce the loss torque of the bearing as much as possible.

発明の目的 本発明は前述のよう々問題点を解消し、1個の軸受で安
定な回転を得、さらにコストダウンも可能ならしめた1
面対向型無整流子電動機を提供するものである。
Purpose of the Invention The present invention solves the above-mentioned problems, provides stable rotation with a single bearing, and further reduces costs.
The present invention provides a surface-facing non-commutator motor.

発明の構成 本発明の電動機の構成は、ロータとステータが軸方向に
対向した、いわゆる面対向型の電動機であって、ステー
タを固定した基台と、この基台に固着した固定軸とを有
し、上記ロータを、その略■1心にて軸受けを介し、(
即ちロータの略重心に軸受けを備えており)、上記固定
軸に回転自在に配設されている。し/ζがってこの場合
軸受内輪は固定であり、外輪が回転する形をとる。
Structure of the Invention The structure of the electric motor of the present invention is a so-called surface facing type electric motor in which a rotor and a stator face each other in the axial direction, and includes a base to which the stator is fixed, and a fixed shaft fixed to the base. Then, the above-mentioned rotor is connected through a bearing at its approximately one core, (
That is, the rotor is provided with a bearing approximately at its center of gravity) and is rotatably disposed on the fixed shaft. Therefore, in this case, the inner ring of the bearing is fixed and the outer ring rotates.

実施例の説明 以下添付図に基ついて本発明の一実施例について説明す
る。
DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

第2図において、11は固定軸で、一端は基台12に固
定されており、他端は軸受け13を介してロータ14を
回転自在に保持している。そしてこの軸受け13はロー
タ14の略重心に配置している。16はコーク、16は
ロータマグネットである。そしてこのロータマグネット
16に対向して駆動コイル17を巻回したステータ18
が上記基台12に固定されている。19は磁極位置検出
用のセンサーであり、これは磁極を検出し、その信号を
駆動コイル17に回転磁界を生じさせる制御回路(図示
せず)に送るしくみになっている。
In FIG. 2, reference numeral 11 denotes a fixed shaft, one end of which is fixed to a base 12, and the other end of which rotatably holds a rotor 14 via a bearing 13. This bearing 13 is arranged approximately at the center of gravity of the rotor 14. 16 is a coke, and 16 is a rotor magnet. A stator 18 having a drive coil 17 wound around it faces the rotor magnet 16.
is fixed to the base 12. Reference numeral 19 denotes a sensor for detecting the magnetic pole position, which detects the magnetic pole and sends the signal to a control circuit (not shown) that generates a rotating magnetic field in the drive coil 17.

ここで軸受け13は前述の通り、ロータ14の略重心に
設けている。そのだめ、ロータのアンバランス等の力は
必要以上にはかからないことになる。即ち最小限に押え
られることになる。なぜなら、例えば、軸受けを上記構
造てロータの重心でなく、それより離れだ位置に設けた
場合、ロータの重心(即ち回転の重心となる)と軸受け
の中心との距離が腕となっだ偶ジJとしてロータのアン
・・ランス分の力が働くことになる。しだがって、軸受
けにかかる力は何倍にもなって働くことになり、非常に
負担が大きく、軸受けの損失トルク、あるいは寿命に大
きく影響するものである。それ故、軸受けをロータの略
重心に保持することによって、ロータのアン7バランス
の力を最小限に押え、従来の2個使いに劣らず安定した
回転を、軸受け1個で提供し得る。ものである。
Here, the bearing 13 is provided approximately at the center of gravity of the rotor 14, as described above. As a result, forces such as unbalance of the rotor will not be applied more than necessary. In other words, it will be kept to a minimum. This is because, for example, if the bearing is installed not at the rotor's center of gravity in the above structure, but at a position further away from it, the distance between the rotor's center of gravity (that is, the center of gravity of rotation) and the center of the bearing is equal to the distance between the arms. As J, the force equivalent to Anne Lance of the rotor will work. Therefore, the force applied to the bearing is multiplied many times over, resulting in a very heavy burden and greatly affecting the torque loss and life of the bearing. Therefore, by holding the bearing at approximately the center of gravity of the rotor, the unbalanced force of the rotor can be minimized, and rotation as stable as the conventional two bearings can be provided with one bearing. It is something.

なお従来例においても回転体の重心に軸受けを設け、1
個の軸受けで受けることは可能であるが、この場合回転
体としては回転軸1とロータ2を含めて回転体とみなす
わけで、その重心はロータ2近傍の回転11+ 1部に
あると4’[fj定される(回転軸1の重用が伺加きれ
るため)。坂りにここに軸受けを設けてもロータ2のア
ンバランスはロータ重心(ロータ中実軸部と推定される
。)々軸受けまでの距離かやd、り腕となった偶力と、
して働くことになり好ましいものとは言えない。
In addition, in the conventional example, a bearing is provided at the center of gravity of the rotating body, and 1
However, in this case, the rotating body is considered to include the rotating shaft 1 and the rotor 2, and the center of gravity is at the rotation 11 + 1 part near the rotor 2, which is 4' [fj is determined (because the rotating shaft 1 is used frequently). Even if a bearing is installed here on a slope, the unbalance of the rotor 2 is due to the distance between the rotor center of gravity (estimated to be the rotor's solid shaft), the distance to the bearing, d, and the couple that forms the arm.
I can't say it's a good thing because I have to work as a staff member.

発明の効果 上述の通り、軸受けを1個にて安定な回転を得られるも
のであり、しだがって従来の2個使いに比べ、軸受けの
損失トルクは半分に、同様にして軸受はコストも半分に
できるものである。
Effects of the Invention As mentioned above, stable rotation can be obtained with one bearing. Therefore, compared to the conventional use of two bearings, the loss torque of the bearing is halved, and the cost of the bearing is also reduced. It can be halved.

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

第1図は従来例による電動機の断面図、第2図は本発明
の電動機の断面図である。 11・・・・・・固定軸、12・・・・・・基台、13
・・・・・・軸受け、14・・・・・・ロータ。
FIG. 1 is a sectional view of a conventional electric motor, and FIG. 2 is a sectional view of an electric motor according to the present invention. 11...Fixed axis, 12...Base, 13
...Bearing, 14...Rotor.

Claims (1)

【特許請求の範囲】[Claims] ロータと、このロータの極に軸方向に対向したステータ
と、このステータを固定した基台と、この基台に固着し
た固定軸とを有し、上記ロータを、その略重心にて軸受
けを介し上記固定軸に回転自在に配設した電動機。
It has a rotor, a stator axially opposed to the poles of the rotor, a base fixed to the stator, and a fixed shaft fixed to the base. An electric motor rotatably mounted on the above fixed shaft.
JP14979983A 1983-08-17 1983-08-17 Motor Pending JPS6043055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14979983A JPS6043055A (en) 1983-08-17 1983-08-17 Motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14979983A JPS6043055A (en) 1983-08-17 1983-08-17 Motor

Publications (1)

Publication Number Publication Date
JPS6043055A true JPS6043055A (en) 1985-03-07

Family

ID=15482965

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14979983A Pending JPS6043055A (en) 1983-08-17 1983-08-17 Motor

Country Status (1)

Country Link
JP (1) JPS6043055A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63143070U (en) * 1987-03-06 1988-09-20

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63143070U (en) * 1987-03-06 1988-09-20

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