To provide an excessive turn prevention part in the vicinity of a sill knob connection piece of a lock lever which changes over a lock position and an unlock position by connecting with a ratchet lever rotating integrally with an open lever by a connection link to lock and unlock a door.
A ratchet lever 13 is provided with a horizontal abutting part 18 and a longitudinal abutting part 20. An engaging long hole 25 is formed in an open lever 14, and an engaging pin 27 is engaged therein. A lock lever 30 is fixed on a shaft 31, a rod reaching a key cylinder mechanism is connected with a key connection piece 32, and a rod 37 reaching a key cylinder mechanism is connected with a sill knob connection piece 33. When a stop piece 34 is allowed to abut to an unlock stop part 36 and a door is closed with the engaging pin 27 faced to a missing groove 29, the ratchet lever 13 turns to the left through the connection pin 27, and the lock lever 30 is turned to an unlock piston by pressing a contact end part 28 by the horizontal contact part 18. At this time, a swelling part 38 abuts to an excessive turn prevention part 39 to prevent excessive turn. Consequently, self cancel can be ensured.
NAKAMURA SHUJI
HAYANO NOBORU
