| 摘要 |
<p>PURPOSE:To reduce the man-hours of forming by forming integrally an engaging device which engages and disengages from either of a lower and an upper cover and a protection cover. CONSTITUTION:When the upper cover 4 and protection cover 5 are engaged with each other, an engagement piece 28 is pressed down so as to close the cover 5 in an open state, and then the inside of an engagement part 28b receives an outward force while contacting the outside of the engaging piece 25 to deform by flexing. Further, when the upper end of the engagement part 28b is lowered below the engaging piece 25, the engagement part 28b moves to below the engaging piece 25 and a main body part 28a enters the gap of the engaging piece 25, so that the engaging piece 25 of the cover 4 engages the engaging piece 28 of the cover 5. When they are disengaged, the engaging piece 28 is made to deform by flexing outwardly and then lifted. Further, when the lower cover 3 and cover 5 are connected together, the forked part 18d of the connection piece 18c of the cover 5 is fitted in the through hole 18b of the connection piece 18a of the cover 3.</p> |
