JPS6488117A - Casing for optical position sensor device - Google Patents
Casing for optical position sensor deviceInfo
- Publication number
- JPS6488117A JPS6488117A JP24523787A JP24523787A JPS6488117A JP S6488117 A JPS6488117 A JP S6488117A JP 24523787 A JP24523787 A JP 24523787A JP 24523787 A JP24523787 A JP 24523787A JP S6488117 A JPS6488117 A JP S6488117A
- Authority
- JP
- Japan
- Prior art keywords
- casing
- position sensor
- sensor device
- optical position
- pressure
- 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
- 230000003287 optical effect Effects 0.000 title abstract 3
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
- Details Of Measuring And Other Instruments (AREA)
- Optical Transform (AREA)
Abstract
PURPOSE:To prevent a seal means for the casing from breaking owing to abrupt variation in external air pressure by providing a variable capacity mechanism composed of an expansible flexible member to part of an airtight wall. CONSTITUTION:A bellows 39 consisting of the expansible flexible member is provided to part of the wall 301 of the casing 30 where the optical position sensor device 31 is put. Even if an aircraft where the optical position sensor device 31 is mounted rises or falls abruptly to cause the external pressure of the casing 30 falls or rises abruptly, the bellows expands or contracts in conformity with variation in the external air pressure to balance the pressure in a storage chamber 40 with the external pressure at all times, thereby preventing the magnetic seal 36 from breaking.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24523787A JPS6488117A (en) | 1987-09-29 | 1987-09-29 | Casing for optical position sensor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24523787A JPS6488117A (en) | 1987-09-29 | 1987-09-29 | Casing for optical position sensor device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6488117A true JPS6488117A (en) | 1989-04-03 |
JPH0583124B2 JPH0583124B2 (en) | 1993-11-24 |
Family
ID=17130697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24523787A Granted JPS6488117A (en) | 1987-09-29 | 1987-09-29 | Casing for optical position sensor device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6488117A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019013206A1 (en) * | 2017-07-14 | 2019-01-17 | 株式会社ニコン | Encoder and drive device |
US11506288B2 (en) * | 2017-07-18 | 2022-11-22 | Eagle Industry Co., Ltd. | Shaft seal device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5623407U (en) * | 1979-08-01 | 1981-03-03 | ||
JPS6169072U (en) * | 1984-10-11 | 1986-05-12 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5182206A (en) * | 1975-01-16 | 1976-07-19 | Asahi Glass Co Ltd | Futsusokashokubaino katsuseiijihoho |
-
1987
- 1987-09-29 JP JP24523787A patent/JPS6488117A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5623407U (en) * | 1979-08-01 | 1981-03-03 | ||
JPS6169072U (en) * | 1984-10-11 | 1986-05-12 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019013206A1 (en) * | 2017-07-14 | 2019-01-17 | 株式会社ニコン | Encoder and drive device |
JPWO2019013206A1 (en) * | 2017-07-14 | 2020-05-07 | 株式会社ニコン | Encoder and drive |
US11506288B2 (en) * | 2017-07-18 | 2022-11-22 | Eagle Industry Co., Ltd. | Shaft seal device |
Also Published As
Publication number | Publication date |
---|---|
JPH0583124B2 (en) | 1993-11-24 |
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