| 摘要 |
PROBLEM TO BE SOLVED: To provide a heart cam mechanism capable of surely preventing the occurrence of strong interference between a lock pin and a cam groove, smoothly rotating a movable member, and automatically and quickly restorable without damaging the heart cam mechanism, and a container device having the heart cam mechanism.SOLUTION: A lock pin 5 is erected on an arm 4, and a cam groove 12 moving by engaging with the lock pin 5, is formed in a heart cam member 10 rotatably constituted around a second rotary shaft 18. A groove width shape of the cam groove 12 is formed widely in a groove width in an area of an intermediate part of the cam groove 12, is gradually reduced in the groove width over areas of both end parts from the area of the intermediate part, and is constituted in the substantially same groove width as an outside dimension of the lock pin 5 in the areas of both end parts. When the lock pin 5 engages with an engaging recessed part 16, even if operation of wrench-opening a cover body 2 is performed, the arm 4 is elastically deformed, and the lock pin 5 can be moved in the cam groove 12 by getting over the engaging recessed part 16. |
