| 摘要 |
PROBLEM TO BE SOLVED: To actualize a simplified inexpensive apparatus few in malfunction in a door lock for a pet having a differential function since a device to be attached to a collar of pet is miniaturized and lighten, a load on a pet is reduced and a door lock apparatus can be attached to an existing door for a pet afterwards without installing the whole door apparatus for a pet. SOLUTION: A resonance tag, a non contact IC tag or a magnetic tag is attached to a collar of pet, an approach of pet to an inlet is detected by an electromagnetic wave or a line of magnetic force sent or received through an electromagnetic wave oscillation part 6, an antenna 3 and a control circuit part 7, and a lock is released or returned by utilizing a plunger 8 of a solenoid 2 with a retunn spring fixed to the lower part of the inside of a door frame part as a stopper for a door 1 for a pet.
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