| 摘要 |
PROBLEM TO BE SOLVED: To make use of the buffering function with respect to at least the top and bottom latch heads. SOLUTION: The receptacle instrument for latch lock of a free door is engaged with and disengaged from the two tips of the latch in the up-and-down direction. An engagement hole is formed on the surface of the receptacle instrument, and notches are formed in the right and left side wall parts in a rotary symmetrical state. The engagement hole is formed in the right-and-left side wall parts, and the notches connect a fixed engagement part to the engagement hole. Furthermore, a pair of right-and-left movable bodies are arranged in the notches in a rotary symmetrical state, and the right-and-left movable bodies provided on the bottom wall side of the receptacle instrument close the right-and-left notches in a state where they are energized by an energization spring. At the time of switching from an opened door state to a closed door state, the engagement surface (tip) of the tip of the latch on one side passes through the inclined surface of the movable body on one side by pushing the inclined surface against the spring force of the energization spring. On the other hand, the inclined surface of the tip of the latch on the other side surmounts one fixed engagement part by being brought into slide contact with it. COPYRIGHT: (C)2009,JPO&INPIT
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