JPS5770797A - Rotary valve - Google Patents

Rotary valve

Info

Publication number
JPS5770797A
JPS5770797A JP14698180A JP14698180A JPS5770797A JP S5770797 A JPS5770797 A JP S5770797A JP 14698180 A JP14698180 A JP 14698180A JP 14698180 A JP14698180 A JP 14698180A JP S5770797 A JPS5770797 A JP S5770797A
Authority
JP
Japan
Prior art keywords
orifice
valve member
fluid
control
throttling
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
JP14698180A
Other languages
Japanese (ja)
Inventor
Sadamu Kato
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.)
Toyoda Koki KK
Original Assignee
Toyoda Koki 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 Toyoda Koki KK filed Critical Toyoda Koki KK
Priority to JP14698180A priority Critical patent/JPS5770797A/en
Publication of JPS5770797A publication Critical patent/JPS5770797A/en
Pending legal-status Critical Current

Links

Landscapes

  • Power Steering Mechanism (AREA)
  • Multiple-Way Valves (AREA)

Abstract

PURPOSE: To reduce throttling sound by allowing the back pressure of a pressure fluid to act by providing three control orifices between respective land parts formed at the inner and outer circumferential surfaces of a spool valve member and a sleeve valve member.
CONSTITUTION: With a steering wheel rotated, a spool valve member 22 rotates in relation to a sleeve valve member 21 by a torsion bar 25 twisted thereby. Thus, the first control orifince 37a and the 2nd control orifice 38a are throttled, and consequently the throttling resistance increases. As a result, the fluid pressure in U-groove 30 leading to a supply port 31 rises. The pressurize fluid is introduced into the right chamber of a power cylinder 16 through a distribution port 34, pushing a piston 17 leftward. On the other hand, fluid in the left chamber is discharged to a discharge port 44 through the distribution port 34, the orifice 38a and the 3rd control orifice 39a communicating with an orifice 38b. In this case, also the 3rd control orifice 39a for generating a back pressure performs a throttling action. Accordingly, it is possible to suppress generation of cavitation and prevent generation of throttling sound.
COPYRIGHT: (C)1982,JPO&Japio
JP14698180A 1980-10-22 1980-10-22 Rotary valve Pending JPS5770797A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14698180A JPS5770797A (en) 1980-10-22 1980-10-22 Rotary valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14698180A JPS5770797A (en) 1980-10-22 1980-10-22 Rotary valve

Publications (1)

Publication Number Publication Date
JPS5770797A true JPS5770797A (en) 1982-05-01

Family

ID=15419923

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14698180A Pending JPS5770797A (en) 1980-10-22 1980-10-22 Rotary valve

Country Status (1)

Country Link
JP (1) JPS5770797A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6118564A (en) * 1984-07-04 1986-01-27 Atsugi Motor Parts Co Ltd Power steering unit
JPS63301179A (en) * 1987-05-29 1988-12-08 ベンディクス・エスパ−ナ・ソシエダド・アノニ−マ Fluid distributor for power steering gear for car
CN104290898A (en) * 2013-09-11 2015-01-21 昆山新金福精密电子有限公司 Coaxial flow amplifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6118564A (en) * 1984-07-04 1986-01-27 Atsugi Motor Parts Co Ltd Power steering unit
JPS63301179A (en) * 1987-05-29 1988-12-08 ベンディクス・エスパ−ナ・ソシエダド・アノニ−マ Fluid distributor for power steering gear for car
CN104290898A (en) * 2013-09-11 2015-01-21 昆山新金福精密电子有限公司 Coaxial flow amplifier

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