JPS61129112U - - Google Patents
Info
- Publication number
- JPS61129112U JPS61129112U JP14687584U JP14687584U JPS61129112U JP S61129112 U JPS61129112 U JP S61129112U JP 14687584 U JP14687584 U JP 14687584U JP 14687584 U JP14687584 U JP 14687584U JP S61129112 U JPS61129112 U JP S61129112U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnet
- rotation
- brushless motor
- magnetic flux
- 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
- 230000004907 flux Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
- Brushless Motors (AREA)
Description
第１図は本考案の一実施例を示す要部の平面配
置図、第２図は第１図の装置の磁束説明図、第３
図は従来のブラシレスモータ用回転検出器の縦断
側面図、第４図は第３図の装置の平面図、第５図
は第３図の回転検出器に関する漏れ磁束の説明図
、第６図は同装置の磁束の歪を説明する波形図、
第７図は同装置の出力の歪を説明する波形図であ
る。
５……回転軸、６……モータ用永久磁石、７…
…ロータ、９……ステータ、１１……回転検出用
永久磁石、１２……磁束検出素子、１５……ヨー
ク。
Fig. 1 is a plan layout diagram of the main parts showing one embodiment of the present invention, Fig. 2 is an explanatory diagram of the magnetic flux of the device shown in Fig. 1, and Fig. 3
The figure is a vertical side view of a conventional rotation detector for a brushless motor, Figure 4 is a plan view of the device in Figure 3, Figure 5 is an explanatory diagram of leakage magnetic flux related to the rotation detector in Figure 3, and Figure 6 is A waveform diagram explaining the distortion of the magnetic flux of the device,
FIG. 7 is a waveform diagram illustrating distortion of the output of the device. 5... Rotating shaft, 6... Permanent magnet for motor, 7...
... Rotor, 9 ... Stator, 11 ... Permanent magnet for rotation detection, 12 ... Magnetic flux detection element, 15 ... Yoke.
補正 昭６１．３．７ 考案の名称を次のように補正する。 考案の名称 ブラシレスモータ用回転検出器Correction 1986.3.7 The name of the invention is amended as follows. Name of invention: Rotation detector for brushless motors
Claims (1)
るロータの、ステータとは反対側に装着された、
ロータの磁極数より多極に着磁されたリング状の
回転検出用磁石と、 この回転検出用磁石の磁極幅以下の幅を有し、
その回転検出用磁石に若干の間隙を介して対向配
置された磁束検出素子と を備えたブラシレスモータ用回路検出器において
、 前記磁束検出素子の背面と磁束検出素子が対向
する回転検出用磁石の磁極とは逆極性の少なくと
も２つの磁極との間に若干の空隙を介して磁路を
形成するヨークを設けたことを特徴とするブラシ
レスモータ用回転検出器。[Scope of Claim for Utility Model Registration] A multi-polar permanent magnet rotor type brushless motor that is attached to the rotor on the opposite side of the stator.
A ring-shaped rotation detection magnet magnetized to have more poles than the number of magnetic poles of the rotor, and a width less than or equal to the magnetic pole width of the rotation detection magnet,
In a circuit detector for a brushless motor comprising a magnetic flux detecting element disposed opposite to the rotation detecting magnet with a slight gap, a magnetic pole of the rotation detecting magnet with the back surface of the magnetic flux detecting element facing the magnetic flux detecting element. 1. A rotation detector for a brushless motor, comprising a yoke that forms a magnetic path with a slight gap between at least two magnetic poles having opposite polarities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14687584U JPS61129112U (en) | 1984-09-28 | 1984-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14687584U JPS61129112U (en) | 1984-09-28 | 1984-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61129112U true JPS61129112U (en) | 1986-08-13 |
Family
ID=30705111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14687584U Pending JPS61129112U (en) | 1984-09-28 | 1984-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61129112U (en) |
-
1984
- 1984-09-28 JP JP14687584U patent/JPS61129112U/ja active Pending
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