Patent ID: 7296306

Claim:
A pair of swimming/diving goggles comprising: a goggle body comprising an end including a coupling section, the coupling section including a through-hole, a wall delimiting the through-hole including a pressing face; a buckle comprising a buckle body including two lateral sides and an inner face, two lugs respectively extending from the lateral sides of the buckle body, a pin extending between the lugs, a first gap being defined between the pin and an inner face of the buckle body, a second gap being defined between the pin and the pressing face of the goggle body when the buckle is mounted to the goggle body; a head strap made of soft material and comprising an end extending from an inner side of the goggle body through the through-hole of the goggle body, the first gap, and then extending back to the inner side of the goggle body via the through-hole, with the head strap including an outer portion and an inner portion after assembly; wherein when the outer portion of the head strap is pulled by a wearer, the head strap is tightened to a head of the wearer, and when the outer portion of the head strap is released, a clamping force provided by the inner portion of the head strap moves the pin to a position in which the head strap is tightly clamped between the pin and the pressing face; and wherein when the buckle is moved toward an inner end of the through-hole, the second gap between the pin and the pressing face becomes larger to allow loosening of the head strap.