To realize light handle operation even when a handle of push-pull type is used in a latch lock provided with an inversion type latch.
This latch lock is constituted in such a way that it has an inversion type latch 3, a locking piece 6 for temporary tightening which is energized so as to engage with an engagement receive part 3b of the latch 3 and can oscillate, an engaging projection part 71 for releasing the engagement of the locking piece 6 for the latch 3, and a latch hub 7 of rotation type which is operated by a handle. In this case, another contact part 63 is provided at a position different from a contact part 62 of the latch hub 7 and the engaging projection part 71 to engage an operation piece 9 linked or fixed on a handle of push-pull type with the locking piece 6.
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