| 摘要 |
PROBLEM TO BE SOLVED: To open a door by a single operation by unlocking a latch simultaneously with the opening/closing operation of the door by the push operation or pull operation of push buttons. SOLUTION: A lock member D for holding a closing attitude of the door A is arranged on the loose end side end surface 1 of the door A. The lock member D has a cylindrical case 2 and a latch 6 housed in the case 2 so as to freely protrude and retreat, always energized in the projecting direction by a spring 3 from a back part and having a plan view triangular tip 6a on the tip. An engaging object member E having a recessed fitting part 4 for receiving the triangular tip 6a is arranged in a fixed frame B opposed to the latch 6, and an engaging part 6b having laterally parallel side surfaces is arranged in a halfway of the triangular tip 6a. An engaging groove 4a is formed in the recessed fitting part 4 of the engaging object member E for checking the opening/closing of the door A by engaging with the engaging part 6b of the latch. The push buttons 7 and 7 for retreating the latch 6 to an unlocking position are arranged on the front face 9 and the back face 10 of the door A. COPYRIGHT: (C)2004,JPO&NCIPI
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