| 摘要 |
PROBLEM TO BE SOLVED: To configure a back base, which is attached to a back part of a game board provided in a pinball game machine and used for storing or retaining a structure, to be adaptable to enlargement of the structure.SOLUTION: A back base 10 is divided into an upper division component 11 disposed at an upper side, a lower division component 12 disposed at a lower side, a left division component 13 disposed at a left side, and a right division component 14 disposed at a right side, and is integrated by connecting the respective division components 11-14 together. According to the present embodiment, the respective division components 11-14 are injection moldings of ABS resin. The shapes of connection ends of the respective division components 11-14 have complementary shapes in which only connection ends of adjacent division components correspond to each other, so that, when the back base 10 is assembled, workers cannot mistake the relative positions (adjacent relation) of the respective division components 11-14. According to the present embodiment, the connection ends of the adjacent division components are adhesively connected with an adhesive. |
