JPH023179U - - Google Patents
Info
- Publication number
- JPH023179U JPH023179U JP6981789U JP6981789U JPH023179U JP H023179 U JPH023179 U JP H023179U JP 6981789 U JP6981789 U JP 6981789U JP 6981789 U JP6981789 U JP 6981789U JP H023179 U JPH023179 U JP H023179U
- Authority
- JP
- Japan
- Prior art keywords
- magnet rotor
- magnetic
- contributes
- axial direction
- poles
- 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
- 239000004020 conductor Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 230000005415 magnetization Effects 0.000 claims 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 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位置検知素子
１個、２コイル、２極のマグネツトロータを有す
る円筒状ブラシレスモータの縦断面図、第２図は
同Ｘ―Ｘ線横断面図である。
符号の説明、１……円筒状ブラシレスモータ、
２……モータハウジング、４……ステータヨーク
、５……コギング発生用磁性体隆起部、６―１，
６―２……電機子コイル、６ａ，６ａ′……軸方
向の発生トルクに寄与する有効導体部、７……マ
グネツトロータ、８……回転軸、１０，１１……
軸受、１２……連結部材、１３……位置検知素子
、１４……固定部材、１５……出力端子、１６…
…スラスト軸受け、１８……プリント基板、１９
……透孔、２０……リード線。
Fig. 1 is a longitudinal cross-sectional view of a cylindrical brushless motor having one position sensing element, two coils, and a two-pole magnetic rotor, showing an embodiment of the present invention, and Fig. 2 is a cross-sectional view taken along the line X--X of the same motor. It is. Explanation of symbols, 1... Cylindrical brushless motor,
2...Motor housing, 4...Stator yoke, 5...Magnetic raised portion for cogging generation, 6-1,
6-2... Armature coil, 6a, 6a'... Effective conductor portion contributing to the generated torque in the axial direction, 7... Magnet rotor, 8... Rotating shaft, 10, 11...
Bearing, 12... Connection member, 13... Position detection element, 14... Fixing member, 15... Output terminal, 16...
... Thrust bearing, 18 ... Printed circuit board, 19
...Through hole, 20...Lead wire.
Claims (1)
位置検知素子１個、２コイル、２極のマグネツト
ロータを有する円筒状ブラシレスモータ。 Ｎ極、Ｓ極の磁極をそれぞれ機械角で約１８
０度の着磁幅で形成した２極の円筒状のマグネツ
トロータを有すること。 上記マグネツトロータと径方向の空隙を介し
て対向する固定側に軸方向の発生トルクに寄与す
る導体部の外周開角が機械角で約１８０度の幅で
形成された横断面において半円型の２個の空心型
の電機子コイルを互いに重ならないように隣接配
設していること。 上記電機子コイルのいずれか一方の軸方向に
延びる発生トルクに寄与する導体部と対向しない
位置で且つ他方の軸方向に延びる発生トルクに寄
与する導体部と対向する位置にマグネツトロータ
との磁気的吸引力により最大コギングトルクを発
生させて当該マグネツトロータを所定方向に自起
動回転させることができるコギング発生用磁性体
隆起部を形成していること。 上記マグネツトロータのＮ極、Ｓ極の磁極を
検出するための１個の位置検知素子を固定側に設
けていること。[Claims of Utility Model Registration] A cylindrical brushless motor having one position sensing element, two coils, and a two-pole magnetic rotor, characterized by having the following components. The magnetic poles of N and S poles are each approximately 18 in mechanical angle.
It has a two-pole cylindrical magnet rotor formed with a magnetization width of 0 degrees. On the stationary side facing the magnetic rotor through a radial gap, the outer periphery opening angle of the conductor part that contributes to the generated torque in the axial direction is semicircular in the cross section formed with a width of approximately 180 degrees in mechanical angle. The two air-core armature coils are arranged adjacently so that they do not overlap. The magnet rotor is located at a position that does not face the conductor part that contributes to the generated torque extending in the axial direction of one of the armature coils, and at a position that faces the conductor part that contributes to the generated torque extending in the other axial direction. A cogging-generating magnetic protrusion is formed that can generate a maximum cogging torque by a target attraction force and automatically rotate the magnet rotor in a predetermined direction. One position detection element is provided on the fixed side to detect the magnetic poles of the north and south poles of the magnet rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6981789U JPH023179U (en) | 1989-06-16 | 1989-06-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6981789U JPH023179U (en) | 1989-06-16 | 1989-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH023179U true JPH023179U (en) | 1990-01-10 |
Family
ID=31295088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6981789U Pending JPH023179U (en) | 1989-06-16 | 1989-06-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH023179U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55177701U (en) * | 1979-06-07 | 1980-12-20 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5783149A (en) * | 1980-10-28 | 1982-05-24 | Derufuai:Kk | Motor fan |
-
1989
- 1989-06-16 JP JP6981789U patent/JPH023179U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5783149A (en) * | 1980-10-28 | 1982-05-24 | Derufuai:Kk | Motor fan |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55177701U (en) * | 1979-06-07 | 1980-12-20 |
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