JPS6295486U - - Google Patents
Info
- Publication number
- JPS6295486U JPS6295486U JP18477685U JP18477685U JPS6295486U JP S6295486 U JPS6295486 U JP S6295486U JP 18477685 U JP18477685 U JP 18477685U JP 18477685 U JP18477685 U JP 18477685U JP S6295486 U JPS6295486 U JP S6295486U
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- speed detection
- plate pcb
- face
- iron plate
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 claims 2
Landscapes
- Brushless Motors (AREA)
Description
第１図は本考案の一実施例を示す断面図、第２
図は同実施例において一体形成された速度検出用
ＦＧマグネツトとデイスクチヤツク用マグネツト
の着磁状態を示す平面図、第３図は同実施例にお
いて作用する吸着力を説明する要部断面図、第４
図は従来の面対向コアレスモータを示す断面図で
ある。
２……駆動用マグネツト、１２……シヤフト、
１４……鉄板ＰＣＢ、１６……駆動用コイル、１
８……ＦＧ鉄板ＰＣＢ、２４……速度検出用ＦＧ
マグネツト、２６……デイスクチヤツク用マグネ
ツト。
Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a plan view showing the magnetized state of the speed detection FG magnet and disk chuck magnet integrally formed in the same embodiment, and FIG. Fourth
The figure is a sectional view showing a conventional surface facing coreless motor. 2... Drive magnet, 12... Shaft,
14... Steel plate PCB, 16... Drive coil, 1
8...FG iron plate PCB, 24...FG for speed detection
Magnet, 26...Magnet for disc chuck.
Claims (1)
用コイルに面対向して駆動用マグネツトがシヤフ
トに回転可能に支持されており、かつ、速度検出
用ＦＧマグネツトとデイスクチヤツク用マグネツ
トが前記駆動用マグネツトとともに回転するよう
に支持されている面対向コアレスモータにおいて
、 前記速度検出用ＦＧマグネツトと前記デイスク
チヤツク用マグネツトを一体成形し、 前記速度検出用ＦＧマグネツトとその速度検出
用ＦＧマグネツトに面対向するＦＧ鉄板ＰＣＢを
、両者に働く吸着力が前記駆動用マグネツトとそ
の駆動用マグネツトに面対向する鉄板ＰＣＢとの
間に働く吸着力に大きさがほぼ等しく、かつ、方
向が反対であるように、配置したことを特徴とす
る面対向コアレスモータ。[Scope of Claim for Utility Model Registration] A driving magnet is rotatably supported on a shaft so as to face a motor driving coil attached to a fixed iron plate PCB, and an FG magnet for speed detection and a disk chuck are mounted on a fixed iron plate PCB. In the surface facing coreless motor in which the magnet for speed detection is supported to rotate together with the magnet for drive, the FG magnet for speed detection and the magnet for disk chuck are integrally molded, and the FG magnet for speed detection and the speed detection magnet are integrally molded. The FG steel plate PCB, which faces the FG magnet for use, is arranged such that the adsorption force acting on both of them is approximately equal in magnitude to the adsorption force acting between the drive magnet and the iron plate PCB, which faces the drive magnet, and in the same direction. A face-to-face coreless motor characterized in that the motors are arranged so that they are opposite to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18477685U JPS6295486U (en) | 1985-11-29 | 1985-11-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18477685U JPS6295486U (en) | 1985-11-29 | 1985-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6295486U true JPS6295486U (en) | 1987-06-18 |
Family
ID=31132772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18477685U Pending JPS6295486U (en) | 1985-11-29 | 1985-11-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6295486U (en) |
-
1985
- 1985-11-29 JP JP18477685U patent/JPS6295486U/ja active Pending
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