JPS5628305A - Locking apparatus of fluid pressure cylinder - Google Patents

Locking apparatus of fluid pressure cylinder

Info

Publication number
JPS5628305A
JPS5628305A JP10353779A JP10353779A JPS5628305A JP S5628305 A JPS5628305 A JP S5628305A JP 10353779 A JP10353779 A JP 10353779A JP 10353779 A JP10353779 A JP 10353779A JP S5628305 A JPS5628305 A JP S5628305A
Authority
JP
Japan
Prior art keywords
piston
compressed air
lock
balls
spring means
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
JP10353779A
Other languages
Japanese (ja)
Other versions
JPS5743762B2 (en
Inventor
Yutaka Inaba
Shinichi Inotsume
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.)
SHIYOUKUU KK
Original Assignee
SHIYOUKUU KK
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 SHIYOUKUU KK filed Critical SHIYOUKUU KK
Priority to JP10353779A priority Critical patent/JPS5628305A/en
Publication of JPS5628305A publication Critical patent/JPS5628305A/en
Publication of JPS5743762B2 publication Critical patent/JPS5743762B2/ja
Granted legal-status Critical Current

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  • Actuator (AREA)

Abstract

PURPOSE: To effect positively and safely locking a piston rod by urging a lock piston through spring means when supply of the compressed air is suspended so that a plurality of balls may be urged radially and inwardly by a fastening body having a conical inside surface.
CONSTITUTION: When a compressed air is delivered through a port 20 into a front chamber 8a of a lock piston chamber 8, a lock piston 9 is caused to slide backward against spring means 14 and to stop in the state abutting on a cover 7. In this case, a fastening body 12 disposed in one body with the piston 9 is retracted and balls 18 are set free to unlock a piston rod 5. If an abnormal state is occured in the compressed air supply system and the supply of the compressed air is suspended, the lock piston 9 is advanced by the spring means 14, the smaller diametrical side of a conical inner circumferential surface 12a of the fastening body 12 is pressed against the balls 18 which in turn urges lock shoes 15 inward and therefore the piston rod 5 is locked, from sliding.
COPYRIGHT: (C)1981,JPO&Japio
JP10353779A 1979-08-16 1979-08-16 Locking apparatus of fluid pressure cylinder Granted JPS5628305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10353779A JPS5628305A (en) 1979-08-16 1979-08-16 Locking apparatus of fluid pressure cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10353779A JPS5628305A (en) 1979-08-16 1979-08-16 Locking apparatus of fluid pressure cylinder

Publications (2)

Publication Number Publication Date
JPS5628305A true JPS5628305A (en) 1981-03-19
JPS5743762B2 JPS5743762B2 (en) 1982-09-17

Family

ID=14356593

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10353779A Granted JPS5628305A (en) 1979-08-16 1979-08-16 Locking apparatus of fluid pressure cylinder

Country Status (1)

Country Link
JP (1) JPS5628305A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446974A1 (en) * 1983-12-21 1985-07-11 Nippon Joucomatic Co., Ltd., Tokio/Tokyo PNEUMATIC CYLINDER ASSEMBLY WITH A LOCKING MECHANISM
JPH01103561A (en) * 1987-10-16 1989-04-20 Takeuchi Tekko Kk Lifting actuator for handling equipment in body washer for vehicle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876746A (en) * 1954-10-26 1959-03-10 Hartford Special Machinery Co Fluid actuated jack with pressure responsive automatic lock
US3251278A (en) * 1964-12-16 1966-05-17 Robert H Royster Fluid pressure actuator with fluid pressure controlled locking means
JPS5345385U (en) * 1976-09-21 1978-04-18

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876746A (en) * 1954-10-26 1959-03-10 Hartford Special Machinery Co Fluid actuated jack with pressure responsive automatic lock
US3251278A (en) * 1964-12-16 1966-05-17 Robert H Royster Fluid pressure actuator with fluid pressure controlled locking means
JPS5345385U (en) * 1976-09-21 1978-04-18

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446974A1 (en) * 1983-12-21 1985-07-11 Nippon Joucomatic Co., Ltd., Tokio/Tokyo PNEUMATIC CYLINDER ASSEMBLY WITH A LOCKING MECHANISM
JPH01103561A (en) * 1987-10-16 1989-04-20 Takeuchi Tekko Kk Lifting actuator for handling equipment in body washer for vehicle

Also Published As

Publication number Publication date
JPS5743762B2 (en) 1982-09-17

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