JPS6488117A - Casing for optical position sensor device - Google Patents

Casing for optical position sensor device

Info

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
Application number
JP24523787A
Other languages
Japanese (ja)
Other versions
JPH0583124B2 (en
Inventor
Kiyoshi Toyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nabtesco Corp
Original Assignee
Teijin Seiki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Teijin Seiki Co Ltd filed Critical Teijin Seiki Co Ltd
Priority to JP24523787A priority Critical patent/JPS6488117A/en
Publication of JPS6488117A publication Critical patent/JPS6488117A/en
Publication of JPH0583124B2 publication Critical patent/JPH0583124B2/ja
Granted legal-status Critical Current

Links

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.
JP24523787A 1987-09-29 1987-09-29 Casing for optical position sensor device Granted JPS6488117A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5182206A (en) * 1975-01-16 1976-07-19 Asahi Glass Co Ltd Futsusokashokubaino katsuseiijihoho

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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