Patent ID: 8663135

Claim:
A belt buckle device including a tongue piece connected to an end of a belt extending in a longitudinal direction and defining a major surface and a hook member configured to be selectively connected to the tongue piece, wherein the tongue piece comprises a base end connected to the end of the belt and a free end provided with at least a first lateral bar; wherein the hook member comprises a main body and a hook portion projecting outwardly at an angle from a surface of the main body at a free end of the main body toward a base end of the main body so as to define a hook opening between the hook portion and the main body, the hook opening directed toward the base end of the main body and configured to receive the first lateral bar therein at the free end of the tongue piece; wherein the free end of the tongue piece is provided with an end surface substantially perpendicular to the longitudinal direction, and an adjoining inner surface substantially in parallel with a major surface of the belt, the free end of the tongue piece being configured to abut the hook member when the first lateral bar is received in the hook opening; and wherein a longitudinal dimension between the free end of the tongue piece and a base end side of the first lateral bar is substantially equal to or smaller than a width of an entrance of the hook opening, and an effective thickness of the tongue piece at the first lateral bar is greater than the width of the entrance of the hook opening.