Patent ID: 6461072
Filing Date: 2002-10-08
Classification: B23K,Y10T

Abstract:
A structure body comprising:two hollow frame members which are joined; each of said two hollow frame members includes two face plates, and between said two face plates and connected thereto are plural ribs; and a first end portion of one of said two face plates projects beyond a second end portion, of the other of said two face plates of each hollow frame member; the first, projected end portions of the face plates of the two hollow frame members are joined together by a friction stir welding; a connection member is provided between the second end portions, of the other of the two face plates of the two hollow frame members, and respective end portions of the connection member are joined by friction stir welding to a connection portion of the second end portion of the other of said two face plates, of one of said two hollow frame members, and to a connection portion of the second end portion of the other of said two face plates of the other of said two hollow frame members and said ribs; said friction stir welding between said one of said two hollow frame members and one end portion of said connection member is at an abutted portion of said one of said two hollow frame members and said connection member; and said friction stir welding between the other of said two hollow frame members and the other end portion or said connection member is at an overlapping portion of said frame and said connection member.