JPH01202134A - Speed detector for outer rotor motor - Google Patents
Speed detector for outer rotor motorInfo
- Publication number
- JPH01202134A JPH01202134A JP63023695A JP2369588A JPH01202134A JP H01202134 A JPH01202134 A JP H01202134A JP 63023695 A JP63023695 A JP 63023695A JP 2369588 A JP2369588 A JP 2369588A JP H01202134 A JPH01202134 A JP H01202134A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- outer rotor
- rotor
- recording medium
- recording media
- 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
- 238000001514 detection method Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000002093 peripheral effect Effects 0.000 abstract description 6
- 230000006698 induction Effects 0.000 abstract description 2
- 230000005389 magnetism Effects 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、アウターロータ電動機の速度検出装置の構成
に係り、特に速度検出装置の回転体構成に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the configuration of a speed detection device for an outer rotor motor, and more particularly to the configuration of a rotating body of the speed detection device.
上記特開昭５９−５６８４６に回転ヨークに記録媒体を
塗布し、磁気エンコーダの回転体とした特許がある。又
、特開昭６０−９３９１５に、磁気式ロータリーエンコ
ーダの特許が記載されているが、本発明とは、異なるも
のと考えられる。There is a patent in the above-mentioned Japanese Patent Laid-Open No. 59-56846 in which a rotating yoke is coated with a recording medium to form a rotating body of a magnetic encoder. Further, a patent for a magnetic rotary encoder is described in Japanese Patent Laid-Open No. 60-93915, but it is considered to be different from the present invention.
従来のアウターロータ電動機の速度検出装置として、磁
気エンコーダを取付していた。その磁気エンコーダは、
電動機軸に、速度検出のための記録媒体を塗布した回転
体磁気ドラムと、これに対向ギャップを有して磁気抵抗
効果素子が配置されて固定子を形成して、速度検出装置
が構成される。A magnetic encoder has been installed as a speed detection device for conventional outer rotor motors. The magnetic encoder is
A speed detection device is constructed by a rotary magnetic drum coated with a recording medium for speed detection on the motor shaft, and a magnetoresistive element arranged with an opposing gap to form a stator. .
このように電動機軸方向に速度検出装置が設けられるた
め、電動機の軸方向が大きくなる問題があつた。本発明
の目的は、アウターロータ外周部に記録媒体を塗布、磁
気エンコーダの回転体として従来電動機軸に固定してい
た回転体磁気ドラムを廃止して、電動機の小型化９部品
点数低減を図ることにある。Since the speed detection device is provided in the axial direction of the motor in this manner, there is a problem in that the axial direction of the motor becomes large. The purpose of the present invention is to apply a recording medium to the outer periphery of the outer rotor, eliminate the rotating magnetic drum that was conventionally fixed to the motor shaft as the rotating body of the magnetic encoder, and thereby reduce the size of the motor by 9 parts. It is in.
速度検出装置の磁気エンコーダの回転体磁気記録媒体を
、アウターロータの外周部に配置して回転体とすること
により、従来電動機軸に固定していた回転体磁気ドラム
が廃止出来る。By arranging the rotating body magnetic recording medium of the magnetic encoder of the speed detection device on the outer periphery of the outer rotor to form a rotating body, it is possible to eliminate the rotating body magnetic drum that was conventionally fixed to the motor shaft.
アウターロータ外周部表面に磁気記録媒体を塗布、速度
検出のための磁極を形成するが、電動機回転時ロータ内
周面のスロット部に起因する回転磁気作用により、磁束
がロータ表面部に達するため磁気抵抗効果素子の出力が
安定しない。素子出力安定のためには、（１）ロータ内
周面のスロット部から、ロータ表面部のロータ母材の肉
厚増加、（２）回転磁気作用を受けないようアウターロ
ータ表面に非磁性材を介して、アウターロータ母材表面
から離して磁気記録媒体を塗布して、磁極を形成するこ
とにより、回転磁気の影響を受けずに、アウターロータ
外周部の磁気記録媒体の磁極と、対向して配置されてい
る磁気抵抗効果素子で磁極を検出出来る。A magnetic recording medium is coated on the outer peripheral surface of the outer rotor to form a magnetic pole for speed detection, but when the motor rotates, magnetic flux reaches the rotor surface due to the rotational magnetic action caused by the slots on the rotor's inner peripheral surface, causing magnetic flux to reach the rotor surface. The output of the resistance effect element is unstable. In order to stabilize the element output, (1) increase the thickness of the rotor base material from the slot part on the rotor inner peripheral surface to the rotor surface, and (2) add non-magnetic material to the outer rotor surface to prevent it from being subjected to rotational magnetic action. By applying a magnetic recording medium away from the surface of the outer rotor base material to form magnetic poles, the magnetic recording medium can be coated on the outer rotor's outer periphery to face the magnetic poles of the magnetic recording medium on the outer periphery of the outer rotor without being affected by rotating magnetism. The magnetic pole can be detected by the magnetoresistive element arranged.
以下本発明の一実施例を第１図、第２図、第３図、第４
図で説明する。他の実施例を第６図、第７図で説明する
。第５図は、従来構造を示す図である。第１図、第２図
、第３図、第４図において、１は、アウターロータ電動
機の固定子フレームで、電動機取付のための取付部２を
有し、軸受３を介して、回転軸４．ステータコア５．コ
イル６、マグネット７を一体保持している。回転軸４に
は、アウターロータ８が固定されて、アウターロータ８
の外周部には回転数検出のための、磁気記録媒体８ａが
、非磁性体リング８ｂの表面に塗布されて、磁極が書込
されている。これに対向して、固定子フレーム１には磁
気抵抗効果素子９が設置されて、磁気記録媒体８ａの磁
極を検出する。アウターロータ８には、コイル６に通電
された時、磁気誘導により回転力を発生するためのロー
タスロット８ｃが形成されている。第６図、第７図は、
他の実施例で、磁気記録媒体８ａを、アウターロータ８
の母材に直接塗布、磁極を形成したことを示す図である
。第５図は、従来のアウターロータ構造で、電動機軸４
に、速度検出のための回転体磁気ドラム１０を固定し、
磁気記録媒体８ａを表面に塗布、磁極を形成して回転体
としたことを示す図である。本発明の実施例によれば、
アウターロータ８の外周部に磁気記録媒体８ａを塗布、
磁極を形成することにより、回転体磁気ドラム１０を廃
止出来る。又、回転体磁気ドラム廃止により。An embodiment of the present invention will be described below with reference to FIGS. 1, 2, 3, and 4.
This will be explained with a diagram. Another embodiment will be explained with reference to FIGS. 6 and 7. FIG. 5 is a diagram showing a conventional structure. In FIGS. 1, 2, 3, and 4, reference numeral 1 designates a stator frame of an outer rotor motor, which has a mounting portion 2 for mounting the motor, and a rotary shaft 4 mounted through a bearing 3. ．． Stator core5. The coil 6 and magnet 7 are held together. An outer rotor 8 is fixed to the rotating shaft 4.
A magnetic recording medium 8a for detecting the rotational speed is coated on the surface of a non-magnetic ring 8b, and magnetic poles are written on the outer periphery of the non-magnetic ring 8b. Opposed to this, a magnetoresistive element 9 is installed on the stator frame 1 to detect the magnetic pole of the magnetic recording medium 8a. The outer rotor 8 is formed with a rotor slot 8c for generating rotational force by magnetic induction when the coil 6 is energized. Figures 6 and 7 are
In another embodiment, the magnetic recording medium 8a is connected to the outer rotor 8.
FIG. 3 is a diagram showing that magnetic poles are formed by directly applying the powder to the base material of the base material. Figure 5 shows the conventional outer rotor structure, with the motor shaft 4
A rotating magnetic drum 10 for speed detection is fixed to the
FIG. 3 is a diagram showing that a magnetic recording medium 8a is coated on the surface and magnetic poles are formed to form a rotating body. According to an embodiment of the invention:
Applying a magnetic recording medium 8a to the outer periphery of the outer rotor 8,
By forming magnetic poles, the rotating magnetic drum 10 can be eliminated. Also, due to the abolishment of the rotating magnetic drum.
電動機が小型化出来る効果がある。This has the effect of making the electric motor more compact.
本発明によれば、回転体磁気ドラムが廃止出来るため、
電動機の小型化２部品点数の低減が図れる効果がある。According to the present invention, since the rotating magnetic drum can be abolished,
This has the effect of reducing the size of the electric motor and reducing the number of parts.
第１図は本発明の一実施例を示す全断面図、第２図は第
１図の側面図、第３図は第１図のアウターロータの構造
を示す全断面、第４図は第３図の側面図、第５図は従来
の構造を示す全断面図、第６図は他の実施例を示す縦断
面図、第７図は第６図の側面図である。
１・・・固定子フレーム、２・・・取付部、３・・・軸
受、４・・・回転軸、５・・・ステータコア、６・・・
コイル、７・・・マグネット、８・・・アウターロータ
、８ａ・・・磁気記録媒体、８ｂ・・・非磁性体、８Ｃ
・・・ロータスロット、９・・・磁気抵抗効果素子、１
０・・・回転体磁気ドラム。
第１図 第２図
第３図 、４図
第５図
第６図 第７図FIG. 1 is a full cross-sectional view showing one embodiment of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is a full cross-sectional view showing the structure of the outer rotor shown in FIG. 1, and FIG. 5 is a full sectional view showing a conventional structure, FIG. 6 is a longitudinal sectional view showing another embodiment, and FIG. 7 is a side view of FIG. 6. DESCRIPTION OF SYMBOLS 1... Stator frame, 2... Mounting part, 3... Bearing, 4... Rotating shaft, 5... Stator core, 6...
Coil, 7... Magnet, 8... Outer rotor, 8a... Magnetic recording medium, 8b... Non-magnetic material, 8C
... Rotor slot, 9 ... Magnetoresistive element, 1
0...Rotating magnetic drum. Figure 1 Figure 2 Figure 3 , Figure 4 Figure 5 Figure 6 Figure 7
Claims (1)
るアウターロータ構造の電動機において、回転速度検出
のための磁気記録媒体を、アウターロータ外周部に形成
し、磁気エンコーダの回転体としたことを特徴とするア
ウターロータ電動機の速度検出装置。 ２、特許請求範囲第１項記載のものにおいて、アウター
ロータ外周部に、非磁性材を介して、この表面に記録媒
体を塗布し、磁極を形成して磁気エンコーダの回転体と
したことを特徴とするアウターロータ電動機の速度検出
装置。 ３、特許請求範囲第１項の記載のものにおいて、アウタ
ーロータ外周部の母材に直接、記録媒体を塗布し、磁極
を形成して磁気エンコーダの回転体としたことを特徴と
するアウターロータ電動機の速度検出装置。[Claims] 1. In an electric motor having an outer rotor structure having a magnetic encoder as a speed detection device of the electric motor, a magnetic recording medium for detecting rotational speed is formed on the outer circumference of the outer rotor, and a magnetic recording medium is formed on the outer circumference of the outer rotor, and the magnetic recording medium is formed on the outer circumference of the outer rotor, and A speed detection device for an outer rotor motor, characterized in that: 2. The product described in claim 1 is characterized in that a recording medium is coated on the outer circumference of the outer rotor via a non-magnetic material to form magnetic poles to form a rotating body of a magnetic encoder. A speed detection device for an outer rotor motor. 3. An outer rotor electric motor according to claim 1, characterized in that a recording medium is directly coated on the base material of the outer periphery of the outer rotor to form magnetic poles to form a rotating body of a magnetic encoder. speed detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63023695A JPH01202134A (en) | 1988-02-05 | 1988-02-05 | Speed detector for outer rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63023695A JPH01202134A (en) | 1988-02-05 | 1988-02-05 | Speed detector for outer rotor motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01202134A true JPH01202134A (en) | 1989-08-15 |
Family
ID=12117548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63023695A Pending JPH01202134A (en) | 1988-02-05 | 1988-02-05 | Speed detector for outer rotor motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01202134A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000007452A1 (en) | 1998-07-31 | 2000-02-17 | Nordischer Maschinenbau Rud. Baader Gmbh + Co. Kg | Device and method for processing meat |
| DE102009039075A1 (en) * | 2009-08-27 | 2011-03-03 | Festo Ag & Co. Kg | Electrical external rotor motor has encoder system for detecting rotational angle position or revolution speed of external rotor |
-
1988
- 1988-02-05 JP JP63023695A patent/JPH01202134A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000007452A1 (en) | 1998-07-31 | 2000-02-17 | Nordischer Maschinenbau Rud. Baader Gmbh + Co. Kg | Device and method for processing meat |
| US6604991B1 (en) | 1998-07-31 | 2003-08-12 | Nordischer Maschinenbau Rud. Baader Gmbh + Co Kg | Device and method for processing meat |
| US6843714B2 (en) | 1998-07-31 | 2005-01-18 | Nordischer Maschinenbau Rud. Baader Gmbh + Co Kg | Device and method respectively for processing flesh |
| USRE40085E1 (en) | 1998-07-31 | 2008-02-19 | Nordischer Maschinenbau Rud. Baader Gmbh + Co. Kg | Device and method for processing meat |
| USRE41409E1 (en) * | 1998-07-31 | 2010-06-29 | Nordischer Maschinenbau Rub Baader GmbH + CO KG | Device and method respectively for processing flesh |
| DE102009039075A1 (en) * | 2009-08-27 | 2011-03-03 | Festo Ag & Co. Kg | Electrical external rotor motor has encoder system for detecting rotational angle position or revolution speed of external rotor |
| DE102009039075A8 (en) * | 2009-08-27 | 2011-06-01 | Festo Ag & Co. Kg | Electric external rotor motor with an encoder system |
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