Patent attributes
A low-profile heavy-duty buckle includes a male member having two forward elastic retaining arms, and a female member having two receiving spaces corresponding to the retaining arms of the male member. The retaining arm is elastically exposed from and retained to a side opening provided on a sidewall of the receiving space when the male member is plugged into the female member. The retaining arm further includes an inward extended extension portion having a first retaining block with a first toothed face provided near a distal end thereof. The receiving space is internally provided with a downward extended second retaining block having a second toothed face opposite to the first toothed face. The first and the second toothed face firmly engage with one another to provide the buckle with an enhanced force-bearing strength when the connected male and female members are subjected to two opposite pull forces.
