JPS6412972A - Method of manufacturing sleeve for rotary valve - Google Patents

Method of manufacturing sleeve for rotary valve

Info

Publication number
JPS6412972A
JPS6412972A JP16928487A JP16928487A JPS6412972A JP S6412972 A JPS6412972 A JP S6412972A JP 16928487 A JP16928487 A JP 16928487A JP 16928487 A JP16928487 A JP 16928487A JP S6412972 A JPS6412972 A JP S6412972A
Authority
JP
Japan
Prior art keywords
sleeve
recesses
parts
rotary valve
caulking parts
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
JP16928487A
Other languages
Japanese (ja)
Inventor
Katsukuni Kata
Masayuki Sako
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.)
KYB Corp
Original Assignee
Kayaba Industry 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 Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Priority to JP16928487A priority Critical patent/JPS6412972A/en
Publication of JPS6412972A publication Critical patent/JPS6412972A/en
Pending legal-status Critical Current

Links

Landscapes

  • Power Steering Mechanism (AREA)

Abstract

PURPOSE:To facilitate the manufacture of sleeves by integrally forming axially projecting caulking parts on both ends of a cylindrical sleeve, and by folding the caulking parts inward so as to block openings at both ends of recesses which are formed in the inner periphery of the sleeve. CONSTITUTION:A rotary valve in a power steering unit is composed of a cylindrical sleeve 4 and a spool fitted in the sleeve 4, which are rotated relative to each other to change over fluid passages. In order to form the sleeve 4 for the rotary valve, caulking parts 17 are integrally incorporated to both ends of a cylindrical sleeve material 4' whose inner peripheral surface is cut to form a plurality of recesses 18 whose both ends are opened to both ends of the sleeve material 4', by a broaching. Thereafter, the caulking parts 17 are folded inward so as to complete the sleeve 4 having opened parts on both sides of the recesses 18, which are blocked. Actuator ports 10, 11 are formed in projecting parts 19 between the recesses 18.
JP16928487A 1987-07-07 1987-07-07 Method of manufacturing sleeve for rotary valve Pending JPS6412972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16928487A JPS6412972A (en) 1987-07-07 1987-07-07 Method of manufacturing sleeve for rotary valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16928487A JPS6412972A (en) 1987-07-07 1987-07-07 Method of manufacturing sleeve for rotary valve

Publications (1)

Publication Number Publication Date
JPS6412972A true JPS6412972A (en) 1989-01-17

Family

ID=15883662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16928487A Pending JPS6412972A (en) 1987-07-07 1987-07-07 Method of manufacturing sleeve for rotary valve

Country Status (1)

Country Link
JP (1) JPS6412972A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH049770A (en) * 1990-04-27 1992-01-14 Nippondenso Co Ltd Semiconductor strain-sensitive sensor and manufacture thereof
KR100375994B1 (en) * 1998-11-04 2003-06-18 주식회사 만도 Active Center Fill Structure of Automotive Steering System

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55119564A (en) * 1979-01-16 1980-09-13 Dba Sa Columnar sleeve and method of and tool for making same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55119564A (en) * 1979-01-16 1980-09-13 Dba Sa Columnar sleeve and method of and tool for making same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH049770A (en) * 1990-04-27 1992-01-14 Nippondenso Co Ltd Semiconductor strain-sensitive sensor and manufacture thereof
KR100375994B1 (en) * 1998-11-04 2003-06-18 주식회사 만도 Active Center Fill Structure of Automotive Steering System

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