Patent ID: 8402569

Claim:
A pair of swim goggles, comprising left and right frames encircling lenses; position elements formed on sides of the left and right frames, respectively; and a pair of strap apparatuses assembled with outer sides of the left and right frames; wherein each said strap apparatus comprises a coupling element, a propping plate, a releasing plate, and a head strap having multiple retaining slots; wherein the coupling elements are disposed on the outer sides of the left and right frames and have bases defining openings therein for receiving the head strap, respectively; the propping plate being mounted to the base with one end thereof, and the other end of the propping plate forming a propping wall in the opening and being spaced away from the base; and the releasing plate having an outer face and an inner face opposite to the outer face, the inner face being provided with a pair of guiding walls on opposite sides thereof with respect to two opposite sides of the opening, respectively; each of the guiding walls having a hook portion on one side thereof, and an engaging portion disposed between the guiding walls with respect to the propping wall; whereby the hook portion hooks over a respective side of the base, the propping plate being selectively engaged against one of the retaining slots of the head strap so that the head strap is allowed to move only in one-way direction, and when the releasing plate is being continuously pushed in a reverse direction with respect to the one-way direction, the engaging portion is engaged against and moves along the propping wall so that the propping plate is disengaged from said one of the retaining slots, and the head strap is therefore able to be drawn freely.