JPS6412972A - Method of manufacturing sleeve for rotary valve - Google Patents
Method of manufacturing sleeve for rotary valveInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-07-07 JP JP16928487A patent/JPS6412972A/en active Pending
Patent Citations (1)
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)
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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