| 摘要 |
PROBLEM TO BE SOLVED: To provide a knockdown funnel which is simple in refilling liquid or the like and convenient for carrying and storing. SOLUTION: This knockdown funnel comprises a main body section 14 of a hollow polygonal cone shape having opening sections 10, 12 different in diameter at the upper end and lower end and a guide passage 16 integrally formed extending from the edge on the small diameter side of the opening sections. The main body section 14 comprises a plurality of triangular pieces 24 of the same shape, a superposed piece 34, an engaging slit 44 and an engaging protrusion 54. A plurality of the triangular pieces 24 are connected with each other via thin folding lines 64 to be formed into a side development shape of a polygonal cone shape. The superposed piece 34 is provided projectingly on the side edge of the triangular piece 24a arranged on one end side of the plurality of connected triangular pieces 24 via a thin folding line 64a. Furthermore, the engagement slit 44 is formed through in the triangular piece 24d arranged on the other end side of the plurality of connected triangular pieces 24. The engagement protrusion 54 is provided protrudingly on the side edge 34a of the superposed piece 34, and the main body section 14 is folded in a manner that the triangular pieces 24 are folded with each other via the folding lines 64. COPYRIGHT: (C)2005,JPO&NCIPI
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