Joint structure and joining method
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsShunsuke Haruna, Shintaro Fukada, Ryoji Ohashi, Ryoichi Hatano
Life of this patent
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Abstract
A joined assembly includes: a first member; a second member which has a facing part facing the first member in a thickness direction thereof; and joints lying along the facing part to join the first member and the second member to each other. The joints include: a pair of end joints respectively located at the opposite end portions of the facing part; and an intermediate joint located between the end joints and having a lower joining strength than the end joints. The end joint includes a fastening member mechanically joining the first member and the second member. The intermediate joint includes a friction-stirred part joining the first member and the second member by friction stir.
Claims8
A joined assembly, comprising:
- a first member;
- a second member which has a facing part facing the first member in a thickness direction thereof;
- and
- joints lying along the facing part to join the first member and the second member to each other, wherein
- the joints include:
- a pair of end joints respectively located at the opposite end portions of the facing part;
- and
- an intermediate joint located between the end joints and having a lower joining strength than the end joints,
- the end joints each include a combination of:
- a fastening member mechanically joining the first member and the second member, and
- a friction-stirred part joining the first member and the second member by friction stir, and
- the intermediate joint includes a friction-stirred part joining the first member and the second member by friction stir, and the intermediate joint excludes a fastening member.
A method for joining a first member and a second member which has a facing part facing the first member in a thickness direction thereof, the method comprising:
- an end joining step of forming a pair of end joints respectively at the opposite end portions of the facing part;
- and
- an intermediate joining step of forming, between the end joints, an intermediate joint having a lower joining strength than the end joints, wherein,
- in the end joining step, the end joints are each formed to include a fastening member mechanically joining the first member and the second member, and a friction-stirred part joining the first member and the second member by friction stir,
- in the intermediate joining step, the intermediate joint is formed to include a friction-stirred part joining the first member and the second member by friction stir and excluding a fastening member, and
- the end joining step and the intermediate joining step are executed by a common friction stir joining device.
Dependencies are inferred from the claim text.