JPS61156482U - - Google Patents
Info
- Publication number
- JPS61156482U JPS61156482U JP3840785U JP3840785U JPS61156482U JP S61156482 U JPS61156482 U JP S61156482U JP 3840785 U JP3840785 U JP 3840785U JP 3840785 U JP3840785 U JP 3840785U JP S61156482 U JPS61156482 U JP S61156482U
- Authority
- JP
- Japan
- Prior art keywords
- teeth
- permanent magnet
- opposes
- rotating body
- peripheral surface
- 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 4
- 230000002093 peripheral effect Effects 0.000 claims 2
Description
第１図乃至第４図は本考案の一実施例を示し、
第１図は小型直流モータの断面図、第２図は第１
図の―で切断した半断面図、第３図は永久磁
石の破断した斜視図、第４図は回転状態検出装置
の一部破断せる分解斜視図である。第５図及び第
６図は従来装置を示し、第５図は小型直流モータ
の断面図、第６図は第５図の―の半断面図で
ある。
３……ロータ、２……永久磁石、１１……凹凸
歯、１３……歯、１２……回転体、６……ロータ
軸、１……モータケース、１４……検出コイル。
1 to 4 show an embodiment of the present invention,
Figure 1 is a cross-sectional view of a small DC motor, and Figure 2 is a cross-sectional view of a small DC motor.
FIG. 3 is a perspective view of the permanent magnet, and FIG. 4 is an exploded perspective view of the rotating state detection device. 5 and 6 show a conventional device, FIG. 5 is a sectional view of a small DC motor, and FIG. 6 is a half sectional view taken at - in FIG. 5. 3... Rotor, 2... Permanent magnet, 11... Uneven teeth, 13... Teeth, 12... Rotating body, 6... Rotor shaft, 1... Motor case, 14... Detection coil.
Claims (1)
磁石の一端側の内周面に凹凸歯を設けると共にこ
の凹凸歯に径方向空隙を介して対抗する多数の歯
を環状に設けた磁性回転体をロータ軸に設け、前
記凹凸歯、回転体及び前記永久磁石を内周面に取
付けたモータケースによつて形成される閉磁路内
におけるモータケース内に検出コイルを設けてな
る小型直流モータの回転状態検出装置。 A magnetic rotating body in which uneven teeth are provided on the inner peripheral surface of one end side of a cylindrical permanent magnet that opposes the rotor through a radial gap, and a large number of teeth are provided in an annular shape that opposes the uneven teeth through a radial gap. is provided on the rotor shaft, and a detection coil is provided in the motor case in a closed magnetic path formed by the motor case with the uneven teeth, the rotating body, and the permanent magnet attached to the inner peripheral surface. Condition detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3840785U JPS61156482U (en) | 1985-03-18 | 1985-03-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3840785U JPS61156482U (en) | 1985-03-18 | 1985-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61156482U true JPS61156482U (en) | 1986-09-27 |
Family
ID=30545386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3840785U Pending JPS61156482U (en) | 1985-03-18 | 1985-03-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61156482U (en) |
-
1985
- 1985-03-18 JP JP3840785U patent/JPS61156482U/ja active Pending