Patent ID: 9487978
Filing Date: 2016-11-08
CPC Classification: E05B,E05C,Y10T

Claim Text:
1. An earthquake-proof latch mechanism which engages with a reception portion provided on a door body when vibration occurs so that the earthquake-proof latch mechanism can lock and prevent the door body from opening, the earthquake-proof latch mechanism comprising: a case body; a hook member which is swingably supported in the case body; and a pendulum member which is vibratably suspended and supported in the case body; wherein: the hook member includes a hook on one side of a swinging shaft and a pendulum engagement portion on another side of the swinging shaft, the hook engaging with the reception portion, a through hole being formed in the pendulum engagement portion; the pendulum member is disposed to penetrate the through hole, and a peripheral surface of the pendulum member facing the through hole is formed into a tapered shape; and the peripheral surface pushes up an inner periphery of the through hole to swing the hook member when the pendulum member vibrates.