Title:
ANNULAR WELDING METHOD AND HERMETICALLY SEALED CONTAINER AND VISCOUS DAMPER TO BE OBTAINED BY THE METHOD
Document Type and Number:
Japanese Patent JP3409674
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide the annular welding method by which the hermetically sealed container such as as the viscous damper can be surely hermetically sealed with prescribed welding strength by using friction-stirr-welding and the hermetically sealed container to be obtained by the method.
SOLUTION: A ring shape lid plate 14 is inserted into the opening part of a ring shape recessed groove 12 in an annular container 10. Along respective circular butter parts 15 which are double on the inside and outside and are formed between the inner and outer peripheries of the lid plate 14 and opening edges on the inside and outside of the container 10, the annular friction-stirr-welding is performed respectively by a tool having stirring pin and surface pressing-down part, and respective circular weld lines 20 which are double on the inside and outside by welding, are formed. Further, after forming overlapped parts 23 in the weld lines 20, the deviated parts 24 of the weld lines 20 and the toe of weld 26 at the tips of the deviated parts 24, are positioned by shifting them to the surface outside or inside from the outer and inner opening edges of the container 10. This hermetically sealed container 10 obtained by the annular welding method is used for the viscous damper 1, etc.
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Inventors:
Shinya Makita
Hisashi Hori
Hiromitsu Ishikawa
Hisashi Hori
Hiromitsu Ishikawa
Application Number:
JP356198A
Publication Date:
May 26, 2003
Filing Date:
January 12, 1998
Export Citation:
Assignee:
NIPPON LIGHT METAL COMPANY,LTD.
International Classes:
F16F15/173; B23K20/12; B23K101/12; B23K103/10; (IPC1-7): B23K20/12; F16F15/173
Domestic Patent References:
| JP10193140A | ||||
| JP10165297A | ||||
| JP1015674A |
Other References:
【文献】米国特許5713507(US,A)
Attorney, Agent or Firm:
Manabu Suzuki