Patent ID: 6922875

Claim:
A buckle apparatus, comprising: an ejector disposed in a buckle body, the ejector configured to be press-operated against an urging force of an extrusion spring due to insertion of tongue members into the buckle body; and an engaging member disposed in the buckle body, the engaging member disengageably engaging with the tongue members when the tongue members are received at an engaging position, the ejector configured to urge the tongue members in a dissociative direction by the extrusion spring when the tongue members are disengaged from the engaging member, wherein the ejector is subjected to a press operation in an insertion allowing posture to allow insertion of the tongue members up to the engaging position when the pair of tongue members are substantially simultaneously subjected to the insertion and to achieve a tilting posture to suppress insertion of the tongue members up to the engaging position when only one of the tongue member is inserted into the buckle body, wherein a frame member comprises a guide rail slidingly guiding the ejector in the insertion allowing posture to reciprocate along a direction of the press operation, and a stopper separably comes into contact with the ejector in the tilting posture from the insertion allowing posture for regulating movement in the direction of the press operation, the stopper provided on the guide rail, and wherein a tongue contact of said ejector coming into contact with said tongue members in said press operation is formed in a sharp shape toward said dissociative direction.