| 摘要 |
PROBLEM TO BE SOLVED: To automatically hookingly fasten a movable body to a main body by engaging an engaging object having an inclined face arranged in the main body with an engaging body having an engaging tip part butting against an inclined face arranged in the movable body. SOLUTION: An engaging object 50 forming an inclined face 50aA in a head part 50a is arranged in a peripheral part of an opening 155, and a hookingly fastening base body 1 composed of a base 20, an engaging body 30 and a support plate 40 is arranged in a position opposed to the engaging object 50 in a door 100. The engaging body 30 has a semicircular engaging cutout 31 engaging with the head part 50a of the engaging object 50, and an elastic body 45 having one end engaging with a cutout 34 of the engaging body 30 and a free end part engaging with a bottom part bending part of the support plate 40 is provided inside the support plate 40. When the door 100 is fitted to a casing opening part 150, the engaging body 30 abuts in an upper end part to the inclined face 50aA of the engaging object 50, descends inside the support plate 40 against resiliency of the elastic body 45, and when the upper end part passes through the head part 50a, the cutout 34 projects from the support plate 40 by resiliency of the elastic body 45, so that the upper end part of the engaging body 30 engages with the engaging object 50. Thus, the door 100 is automatically hookingly fastened to a casing.
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