JPH0179382U - - Google Patents
Info
- Publication number
- JPH0179382U JPH0179382U JP1987174815U JP17481587U JPH0179382U JP H0179382 U JPH0179382 U JP H0179382U JP 1987174815 U JP1987174815 U JP 1987174815U JP 17481587 U JP17481587 U JP 17481587U JP H0179382 U JPH0179382 U JP H0179382U
- Authority
- JP
- Japan
- Prior art keywords
- rotor magnet
- rotation center
- brushless motor
- enlarged diameter
- diameter portion
- 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.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Brushless Motors (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
第１図は本考案の一実施例を示す断面正面図、
第２図と第３図は要部拡大断面正面図、第４図は
他の実施例を示す斜視図、第５図は断面平面図、
第６図は検出信号の波形図、第７図と第８図は変
形例を示す要部断面図である。第９図は従来例を
示す半截断面図である。
８……ロータマグネツト、１１……外周面、１
２……ヨーク、１４……磁気感応素子、１５……
一端部、１６……拡径部。
FIG. 1 is a cross-sectional front view showing an embodiment of the present invention;
2 and 3 are enlarged sectional front views of main parts, FIG. 4 is a perspective view showing another embodiment, and FIG. 5 is a sectional plan view.
FIG. 6 is a waveform diagram of a detection signal, and FIGS. 7 and 8 are sectional views of main parts showing modified examples. FIG. 9 is a half-cut sectional view showing a conventional example. 8...Rotor magnet, 11...Outer peripheral surface, 1
2... Yoke, 14... Magnetic sensing element, 15...
One end portion, 16... enlarged diameter portion.
Claims (1)
置検出に磁気感応素子１４…を用いたブラシレス
モータに於て、 上記ロータマグネツト８の外周面１１に接触し
て設けられる磁性体からなるヨーク１２の一端部
１５を、ロータマグネツト８の回転中心Ｏに対し
外径方向に延伸し該回転中心Ｏと直交する面と平
行な短鍔状の拡径部１６を形成すると共に、該拡
径部１６に対し対向状として上記磁気感応素子１
４…を配設したことを特徴とするブラシレスモー
タ。[Claims for Utility Model Registration] In a brushless motor that uses a magnetically sensitive element 14 to detect the rotational position of a rotor magnet 8 made of a permanent magnet, the element is provided in contact with the outer peripheral surface 11 of the rotor magnet 8. One end portion 15 of the yoke 12 made of a magnetic material is extended in the outer diameter direction with respect to the rotation center O of the rotor magnet 8 to form a short brim-shaped enlarged diameter portion 16 parallel to a plane perpendicular to the rotation center O. At the same time, the magnetic sensing element 1 is arranged opposite to the enlarged diameter portion 16.
A brushless motor characterized by having 4... arranged therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17481587U JPH0729733Y2 (en) | 1987-11-16 | 1987-11-16 | Brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17481587U JPH0729733Y2 (en) | 1987-11-16 | 1987-11-16 | Brushless motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0179382U true JPH0179382U (en) | 1989-05-29 |
| JPH0729733Y2 JPH0729733Y2 (en) | 1995-07-05 |
Family
ID=31466652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17481587U Expired - Lifetime JPH0729733Y2 (en) | 1987-11-16 | 1987-11-16 | Brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0729733Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002272079A (en) * | 2001-03-13 | 2002-09-20 | Honda Motor Co Ltd | Structure of outer rotor brushless motor |
| WO2005034306A1 (en) * | 2003-09-30 | 2005-04-14 | Kabushiki Kaisha Toshiba | Rotor of motor |
-
1987
- 1987-11-16 JP JP17481587U patent/JPH0729733Y2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002272079A (en) * | 2001-03-13 | 2002-09-20 | Honda Motor Co Ltd | Structure of outer rotor brushless motor |
| JP4618913B2 (en) * | 2001-03-13 | 2011-01-26 | 本田技研工業株式会社 | Structure of outer rotor type brushless motor |
| WO2005034306A1 (en) * | 2003-09-30 | 2005-04-14 | Kabushiki Kaisha Toshiba | Rotor of motor |
| US7317272B2 (en) | 2003-09-30 | 2008-01-08 | Kabushiki Kaisha Toshiba | Rotor of motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0729733Y2 (en) | 1995-07-05 |