JPH01134214U - - Google Patents
Info
- Publication number
- JPH01134214U JPH01134214U JP1988030630U JP3063088U JPH01134214U JP H01134214 U JPH01134214 U JP H01134214U JP 1988030630 U JP1988030630 U JP 1988030630U JP 3063088 U JP3063088 U JP 3063088U JP H01134214 U JPH01134214 U JP H01134214U
- Authority
- JP
- Japan
- Prior art keywords
- rotary shaft
- rotary
- tapered
- housing
- forming
- 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
- 238000010586 diagram Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
- F16C32/0425—Passive magnetic bearings with permanent magnets on both parts repelling each other for radial load mainly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0402—Bearings not otherwise provided for using magnetic or electric supporting means combined with other supporting means, e.g. hybrid bearings with both magnetic and fluid supporting means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第１図はこの考案のロータリエンコーダの説明
図、第２図ａはこの考案のロータリエンコーダの
回転軸に設けた膨出部のテーパ面に設けた溝の平
面図、第２図ｂは第２図ａのＣ―Ｃ′に沿つてみ
た図、第３図は従来のロータリエンコーダの説明
図である。
１，１１……ハウジング、３……テーパ部、５
，１２……孔、６，１４……回転軸、７……膨出
部、７ａ……溝、８，１６……回転デイスク、９
，１７……センサ、１０……着磁、１３……軸受
、１５……支承部。
FIG. 1 is an explanatory diagram of the rotary encoder of this invention, FIG. FIG. 3, a view taken along line CC' in FIG. a, is an explanatory diagram of a conventional rotary encoder. 1, 11...housing, 3...tapered part, 5
, 12...hole, 6, 14...rotating shaft, 7...bulge, 7a...groove, 8, 16...rotating disk, 9
, 17...sensor, 10...magnetization, 13...bearing, 15...supporting part.
Claims (1)
た回転軸を回転可能に配設するとともに、前記回
転軸の回転量を、前記回転デイスクに隣接して配
設されたセンサで検知するようにしたロータリエ
ンコーダにおいて、前記回転軸の中央部に、上下
面がテーパ面となる膨出部を形成するとともに、
この膨出部に対応する前記ハウジングの部分にテ
ーパ部を形成し、さらに前記膨出部の上下面のテ
ーパ面に、回転軸の回転方向と反対方向に順次深
くなる溝を複数穿設し、前記回転軸の回転時に前
記溝による空気流がハウジングのテーパ面に吹き
付けるようにして回転軸を支持し、さらに前記回
転軸の一部の外周面およびここに対向する前記ハ
ウジングの内周面をともに同極にして磁力が反発
するようにしたことを特徴とするロータリエンコ
ーダ。 A rotary encoder in which a rotary shaft having a rotary disk at one end is rotatably disposed in a housing, and the amount of rotation of the rotary shaft is detected by a sensor disposed adjacent to the rotary disk. forming a bulge in the center of the rotating shaft, the upper and lower surfaces of which are tapered;
forming a tapered portion in a portion of the housing corresponding to the bulging portion, and further forming a plurality of grooves that become deeper sequentially in a direction opposite to the rotational direction of the rotating shaft on the tapered surfaces of the upper and lower surfaces of the bulging portion; The rotary shaft is supported in such a way that airflow from the groove is blown onto the tapered surface of the housing when the rotary shaft rotates, and the rotary shaft is further provided with both an outer circumferential surface of a portion of the rotary shaft and an inner circumferential surface of the housing opposite thereto. A rotary encoder characterized by having the same polarity so that the magnetic force repels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988030630U JPH0620968Y2 (en) | 1988-03-08 | 1988-03-08 | Rotary encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988030630U JPH0620968Y2 (en) | 1988-03-08 | 1988-03-08 | Rotary encoder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01134214U true JPH01134214U (en) | 1989-09-13 |
| JPH0620968Y2 JPH0620968Y2 (en) | 1994-06-01 |
Family
ID=31255858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988030630U Expired - Lifetime JPH0620968Y2 (en) | 1988-03-08 | 1988-03-08 | Rotary encoder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0620968Y2 (en) |
-
1988
- 1988-03-08 JP JP1988030630U patent/JPH0620968Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0620968Y2 (en) | 1994-06-01 |