Patent ID: 6860526
Filing Date: 2005-03-01
Classification: B29C,B29L,F16B,Y10T

Abstract:
1. A coupling structure for a hollow body, comprising: a first half part; and a second half part, the first half part and the second half part being coupled to each other to constitute the hollow body, the second half part being fitted with an internal member to be provided inside the hollow body, wherein the first half part, the second half part, and the internal member each includes a coupling face having a first raised portion that extends in a direction of coupling, wherein the first half part includes a second raised portion and a third raised portion respectively on the inner side of the hollow body and on the outer side of the hollow body with respect to the first raised portion of the first half part, the second raised portion and the third raised portion being separated from the first raised portion with a spacing, being shorter than the first raised portion of the first half part, and extending in a direction of coupling, wherein the second half part includes a third raised portion on the outer side of the hollow body with respect to the first raised portion of the second half part, the third raised portion of the second half part being separated from the first raised portion of the second half part with a spacing, being shorter than the first raised portion of the second half part, and extending toward the third raised portion of the first half part, wherein the internal member includes a second raised portion on the inner side of the hollow body with respect to the first raised portion of the internal member, the second raised portion of the internal member being separated from the first raised portion of the internal member with a spacing, being shorter than the first raised portion of the internal member, and extending toward the second raised portion of the first half part, and wherein, in a state where the first raised portion of the first half part, the first raised portion of the second half part, and the first raised portion of the internal member are coupled to one another, the second raised portion of the first half part and the second raised portion of the internal member are in contact with each other, and the third raised portion of the first half part and the third raised portion of the second half part are in contact with each other.