Abstract: A cord lock may include a first main body, two sliding blocks, two pressing members, a cord, and a shell. The first main body has two first through holes and a sliding rail, and each of the two first through holes extended vertically has an oval cross section and the two first through holes are laterally symmetrical, and the sliding rail is adapted to penetrate through two lateral ends of the first main body horizontally. The two sliding blocks horizontally movable in the sliding rail of the first main body are movable in the two first through holes respectively.

Abstract: A shoelace fastening device includes a main part having two openings perpendicularly defined therethrough and a passage transversely defined through the main part. Two sliding members are slidably inserted into the passage from two ends of the main part and each sliding member has an enclosed hole and an opened recess. A first hole and a second hole are formed by the separation portion in each of the openings. The first and second holes have substantially the same diameters. Two end member are connected on two ends of the two sliding members and each end member has a stop located on an inside thereof and the stop is engaged with an inside of the passage to prevent the sliding member from sliding within the passage. The main part includes a notch defined in an underside thereof so as to partially accommodate the shoelaces.

Abstract: An improved structure of a buckle to fasten shoelaces includes a box like arcuate main body having a longitudinal gap and a pair of flanges in the top, a pair of cross-shaped through holes in front and back walls for disposing a pair of sliders into the main body which further has an inverse U-shaped check plate at each end, a pair of inlets and pair of outlets spacedly formed in the bottom for inserting in and piercing out of a pair of tags of the shoelace, an elastic plate mounted on the main body having a pair of detent mean on each end wall held by the flanges of the main body and a colorful cap covering the elastic plate and the main body having a retaining flange inside a front and a back wall held by the bottom of the main body. The front wall of the cap further has a pair of retaining grooves in out surface for engage within the tags to make a butterfly configuration on the vamp of a shoe.

Abstract: A structure of a buckle to fasten shoelaces is provided. The buckle includes a box like arcurate main body having a gap and flanges on the top, an opening in each end, a rectangular through hole in the middle of front and back walls, a pair of inlets and a pair of outlets symmetrically and spacedly formed in the bottom with the outlets being positioned outside of the inlets and a pair of retaining plates being defined abutting the outlets, a pair of sliders slidably disposed into the main body and positioned between each of the inlets and outlets and having a flat depression in the top and a striped surface on a lateral side, a pair of tags from a shoelace respectively inserted into the main body via the inlets and surrounded the top of the sliders and then pierced out of the main body via the outlets, an elastic cap covered the main body and having two pairs of retaining blocks held by the flanges of the main body and two pairs of actuating rods engageable with the sliders.