JPS54143181A - Thermo-bellows - Google Patents

Thermo-bellows

Info

Publication number
JPS54143181A
JPS54143181A JP4983478A JP4983478A JPS54143181A JP S54143181 A JPS54143181 A JP S54143181A JP 4983478 A JP4983478 A JP 4983478A JP 4983478 A JP4983478 A JP 4983478A JP S54143181 A JPS54143181 A JP S54143181A
Authority
JP
Japan
Prior art keywords
bellows
rib
positive
negative pressures
outermost
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
Application number
JP4983478A
Other languages
Japanese (ja)
Inventor
Hideaki Nagashima
Toshio Hatsuda
Koji Ochiai
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4983478A priority Critical patent/JPS54143181A/en
Publication of JPS54143181A publication Critical patent/JPS54143181A/en
Pending legal-status Critical Current

Links

Landscapes

  • Details Of Measuring And Other Instruments (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

PURPOSE: To prevent a bellows from cracking, even if positive and negative pressures are repeatedly applied, by preventing the compression stress when a vacuum pressure is applied to the inside of the bellows.
CONSTITUTION: The outermost end rib, which is in abutment against a holding member arranged to transmit the motions of a bellows body 6 to switch menas, is crushed so that no compression stroke is generated in the vicinity of the curved portion connecting the cap portion 6a of the body 6 and the outermost rib when the internal pressure in the body 6 becomes a vacuum. Even with the repeated applications of the positive and negative pressures in the body 6, there arises no cracks in the curved portion. Even if a ring-shaped member is disposed in the outermost rib in place of crushing the rib, similar results can be obtained. As in the above, even if the bellows is used at such a temperature range as generates the positive and negative pressures, it is possible to prevent the bellows from cracking.
COPYRIGHT: (C)1979,JPO&Japio
JP4983478A 1978-04-28 1978-04-28 Thermo-bellows Pending JPS54143181A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4983478A JPS54143181A (en) 1978-04-28 1978-04-28 Thermo-bellows

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4983478A JPS54143181A (en) 1978-04-28 1978-04-28 Thermo-bellows

Publications (1)

Publication Number Publication Date
JPS54143181A true JPS54143181A (en) 1979-11-08

Family

ID=12842104

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4983478A Pending JPS54143181A (en) 1978-04-28 1978-04-28 Thermo-bellows

Country Status (1)

Country Link
JP (1) JPS54143181A (en)

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