| 摘要 |
A self door locking device is provided to prevent accident danger by being locked automatically at the instant of door closing and making a door to be not opened due to carelessness. A self door locking device comprises a guide support block(30), a locking pin support(40), a locking pin housing(54) and a locking block(60). The guide support block is mounted on a door. The locking pin support is installed in the guide support block so as to be elevated. The locking pin housing is installed in the locking pin support, and includes a spring and a locking pin in the inside for being pushed in one direction by spring force. The locking block is installed to a main body of a machine tool facing the door so as to allow the door to be locked and unlocked according to a moving position of a locking pin.
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