JPH0321967U - - Google Patents
Info
- Publication number
- JPH0321967U JPH0321967U JP7914889U JP7914889U JPH0321967U JP H0321967 U JPH0321967 U JP H0321967U JP 7914889 U JP7914889 U JP 7914889U JP 7914889 U JP7914889 U JP 7914889U JP H0321967 U JPH0321967 U JP H0321967U
- Authority
- JP
- Japan
- Prior art keywords
- rotation speed
- speed detection
- magnetic paint
- rotor
- magnetize
- 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
- 239000003973 paint Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 2
- 239000000758 substrate Substances 0.000 description 1
Description
第１図は本考案の一実施例の断面図、第２図は
ロータ側のロータリートランスの底面図、第３図
は磁性塗料の着磁状態を示す断面図、第４図は従
来のドラムモータの断面図、第５図はそのＦＧコ
イル、ＦＧマグネツトの平面図である。
３ａ……ＦＧコイルパターン、１１……軸、１
２……アツパードラム、１４……ロアードラム、
１６，１８……コイル、１７，１９……ロータリ
ートランス、２０……磁性塗料、２１……基板。
Figure 1 is a sectional view of one embodiment of the present invention, Figure 2 is a bottom view of the rotary transformer on the rotor side, Figure 3 is a sectional view showing the magnetized state of magnetic paint, and Figure 4 is a conventional drum motor. FIG. 5 is a plan view of the FG coil and FG magnet. 3a...FG coil pattern, 11...axis, 1
2...Upper drum, 14...Lower drum,
16, 18...Coil, 17, 19...Rotary transformer, 20...Magnetic paint, 21...Substrate.
Claims (1)
いる回転数検出コイルパターンに対面して、他方
に磁性塗料を塗布し、これを表面がＮ極、Ｓ極が
交互になるように着磁したことを特徴とする回転
数検出装置。 Facing the rotation speed detection coil pattern attached to either the stator or the rotor, apply magnetic paint to the other side and magnetize it so that the N and S poles alternate on the surface. Characteristic rotation speed detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7914889U JPH0321967U (en) | 1989-07-06 | 1989-07-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7914889U JPH0321967U (en) | 1989-07-06 | 1989-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0321967U true JPH0321967U (en) | 1991-03-06 |
Family
ID=31623052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7914889U Pending JPH0321967U (en) | 1989-07-06 | 1989-07-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0321967U (en) |
-
1989
- 1989-07-06 JP JP7914889U patent/JPH0321967U/ja active Pending