JPH0210777U - - Google Patents
Info
- Publication number
- JPH0210777U JPH0210777U JP8724688U JP8724688U JPH0210777U JP H0210777 U JPH0210777 U JP H0210777U JP 8724688 U JP8724688 U JP 8724688U JP 8724688 U JP8724688 U JP 8724688U JP H0210777 U JPH0210777 U JP H0210777U
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- pivot shaft
- fixed
- hub
- spindle motor
- 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 3
- 239000000758 substrate Substances 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 1
Landscapes
- Brushless Motors (AREA)
- Motor Or Generator Frames (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
第１図は本考案の実施例を示す断面正面図、第
２図は別の実施例を示す一部断面正面図である。
１……枢支軸、１ａ……一端、３……ハブ、９
……基板、１０……回路部、１１……センサ、１
２……センサ磁石、１３……センサ磁石保有環体
、１４……中心孔、１５……微小円周間隙部、１
６……センサ磁石取付環体、Ｒ……ラビリンス溝
。
FIG. 1 is a sectional front view showing an embodiment of the present invention, and FIG. 2 is a partially sectional front view showing another embodiment. 1... Pivot shaft, 1a... One end, 3... Hub, 9
... Board, 10 ... Circuit section, 11 ... Sensor, 1
2...Sensor magnet, 13...Sensor magnet holding ring, 14...Center hole, 15...Minute circumferential gap, 1
6...Sensor magnet mounting ring body, R...Labyrinth groove.
Claims (1)
端１ａに、該ハブ３に内有状として基板９を固着
すると共に、該基板９の内面側の回路部１０に、
ロータ位置検出用のセンサ１１を設けたインハブ
型ブラシレスのスピンドルモータに於て、 上記センサ１１によつて検出されるべきセンサ
磁石１２を一体状として一部に有するセンサ磁石
保有環体１３を、上記ハブ３の内周側に固着し、
かつ、該センサ磁石保有環体１３の中心孔１４の
内径を、上記枢支軸１の外径よりも僅かに大きく
設定して、該中心孔１４の内周面と該枢支軸１の
外周面との間に、微小円周間隙部１５を形成した
ことを特徴とするスピンドルモータ。 ２ ハブ３が回転可能に枢支された枢支軸１の一
端１ａに、該ハブ３に内有状として基板９を固着
すると共に、該基板９の内面側の回路部１０に、
ロータ位置検出用のセンサ１１を設けたインハブ
型ブラシレスのスピンドルモータに於て、 上記センサ１１によつて検出されるべきセンサ
磁石１２を固着したセンサ磁石取付環体１６を、
上記ハブ３の内周側に固着し、かつ、該センサ磁
石取付環体１６の中心孔１４の内径を、上記枢支
軸１の外径よりも僅かに大きく設定して、該中心
孔１４の内周面と該枢支軸１の外周面との間に、
微小円周間隙部１５を形成したことを特徴とする
スピンドルモータ。[Claims for Utility Model Registration] 1. A substrate 9 is fixed to one end 1a of a pivot shaft 1 on which a hub 3 is rotatably supported, and a substrate 9 is fixed to the inner surface of the substrate 9. In the circuit section 10,
In an in-hub type brushless spindle motor provided with a sensor 11 for detecting the rotor position, the sensor magnet retaining ring body 13 integrally has a sensor magnet 12 to be detected by the sensor 11 as described above. It is fixed to the inner circumferential side of the hub 3,
The inner diameter of the center hole 14 of the sensor magnet holding ring 13 is set to be slightly larger than the outer diameter of the pivot shaft 1, so that the inner circumferential surface of the center hole 14 and the outer circumference of the pivot shaft 1 are A spindle motor characterized in that a minute circumferential gap 15 is formed between the spindle motor and the surface. 2. A board 9 is fixed to one end 1a of the pivot shaft 1 on which the hub 3 is rotatably supported, and a circuit board 9 is attached to the circuit part 10 on the inner surface of the board 9.
In an in-hub type brushless spindle motor equipped with a sensor 11 for rotor position detection, a sensor magnet mounting ring 16 to which a sensor magnet 12 to be detected by the sensor 11 is fixed is attached.
It is fixed to the inner peripheral side of the hub 3, and the inner diameter of the center hole 14 of the sensor magnet mounting ring body 16 is set slightly larger than the outer diameter of the pivot shaft 1. Between the inner peripheral surface and the outer peripheral surface of the pivot shaft 1,
A spindle motor characterized in that a minute circumferential gap 15 is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988087246U JPH0747982Y2 (en) | 1988-06-29 | 1988-06-29 | In-hub type brushless spindle motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988087246U JPH0747982Y2 (en) | 1988-06-29 | 1988-06-29 | In-hub type brushless spindle motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0210777U true JPH0210777U (en) | 1990-01-23 |
| JPH0747982Y2 JPH0747982Y2 (en) | 1995-11-01 |
Family
ID=31311864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988087246U Expired - Lifetime JPH0747982Y2 (en) | 1988-06-29 | 1988-06-29 | In-hub type brushless spindle motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0747982Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0555772U (en) * | 1991-12-18 | 1993-07-23 | 長野日本電産株式会社 | Spindle motor |
| JPH05211735A (en) * | 1992-01-30 | 1993-08-20 | Nippon Densan Corp | Spindle motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61476U (en) * | 1984-06-01 | 1986-01-06 | 日本電気精器株式会社 | Spindle motor for magnetic disk |
| JPS6391858U (en) * | 1986-12-03 | 1988-06-14 | ||
| JPH0179380U (en) * | 1987-11-13 | 1989-05-29 | ||
| JPH01157255A (en) * | 1987-12-11 | 1989-06-20 | Takeo Yamaguchi | Motor |
-
1988
- 1988-06-29 JP JP1988087246U patent/JPH0747982Y2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61476U (en) * | 1984-06-01 | 1986-01-06 | 日本電気精器株式会社 | Spindle motor for magnetic disk |
| JPS6391858U (en) * | 1986-12-03 | 1988-06-14 | ||
| JPH0179380U (en) * | 1987-11-13 | 1989-05-29 | ||
| JPH01157255A (en) * | 1987-12-11 | 1989-06-20 | Takeo Yamaguchi | Motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0555772U (en) * | 1991-12-18 | 1993-07-23 | 長野日本電産株式会社 | Spindle motor |
| JPH05211735A (en) * | 1992-01-30 | 1993-08-20 | Nippon Densan Corp | Spindle motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0747982Y2 (en) | 1995-11-01 |