JPS5510164A - Hydraulic servo valve - Google Patents

Hydraulic servo valve

Info

Publication number
JPS5510164A
JPS5510164A JP8307478A JP8307478A JPS5510164A JP S5510164 A JPS5510164 A JP S5510164A JP 8307478 A JP8307478 A JP 8307478A JP 8307478 A JP8307478 A JP 8307478A JP S5510164 A JPS5510164 A JP S5510164A
Authority
JP
Japan
Prior art keywords
force motor
liquid
servo valve
chamber
shaft
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
JP8307478A
Other languages
Japanese (ja)
Inventor
Yoshimichi Akasaka
Ichiro Nakamura
Masayuki Shigeta
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 JP8307478A priority Critical patent/JPS5510164A/en
Publication of JPS5510164A publication Critical patent/JPS5510164A/en
Pending legal-status Critical Current

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  • Servomotors (AREA)

Abstract

PURPOSE: To provide a hydraulic servo valve, in which a flexible partition plate is fixed, in freely detachable manner, at a suitable portion on the shaft of a force motor and a shield plate is disposed downwardly of the force motor shaft in the manner facing the partition plate, whereby it is enabled to use corrosive or oil- in-water type hydraulic liquid for operatuing the force motor.
CONSTITUTION: A flexible partition plate 22 is fitted in groove 20 formed in the shaft 5A of force motor 5, and a shield plate 24 is erected in hollow space 26 in body 4. With such an arrangement, if spool 1 is shifted along with operation of force motor 5 and corrosive liquid leaks into force motor 5 through small gap 2 along with movement of spool 1, the leaked liquid only flows into chamber 30 but it does not come into direct contact with coil 6 of force motor 5. Further, hydraulic liquid leaked into chamber 30 is discharged to the outside of body 4 through drain port 32, so that the leaked liquid does not fill up the chamber 30. Thus, in the servo valve of this invention, it is possible to use corrosive or oil-in-water type hydraulic liquid.
COPYRIGHT: (C)1980,JPO&Japio
JP8307478A 1978-07-10 1978-07-10 Hydraulic servo valve Pending JPS5510164A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8307478A JPS5510164A (en) 1978-07-10 1978-07-10 Hydraulic servo valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8307478A JPS5510164A (en) 1978-07-10 1978-07-10 Hydraulic servo valve

Publications (1)

Publication Number Publication Date
JPS5510164A true JPS5510164A (en) 1980-01-24

Family

ID=13792022

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8307478A Pending JPS5510164A (en) 1978-07-10 1978-07-10 Hydraulic servo valve

Country Status (1)

Country Link
JP (1) JPS5510164A (en)

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