| 摘要 |
PROBLEM TO BE SOLVED: To enable an ornamental cover to be positively fixed even if the ornamental cover is slightly slanted to advance in a forward direction during fixing of the ornamental cover and also even after fixing of the ornamental cover to enable the fixed state of the ornamental cover to be positively maintained. SOLUTION: This ventilation fan is constructed such that twisted coil springs 24 having an arm section 26 are arranged at both sides of a ring section 25, the arm section 26 of the spring 24 is engaged with a spring hook part 22 in a main body 11 to apply a resilient force to cause the arm section 26 to be expanded, a hook part 30 of the ornamental cover 27 is engaged with the ring part 25 of the spring 24, the ornamental cover 27 is pulled up by the expanding resilient force of the arm section 26 of the spring 24 and further fixed to the lower part of the main body 11. In this case, the hook part 30 of the ornamental cover 27 is displaced from the spring hook part 22 in an engaging advancing direction with the spring 24, resulting in that the spring 24 is flexed to cause the ring section 25 to be press contacted with the deep part of the hook part 30. |
