Patent attributes
A buckle for adjusting a length of a strap includes a first body and a locking unit. The first body has a first body unit having a first main body surrounding a containment space, a first through hole and a second through hole disposed separately on the first main body, and a first rod disposed in the containment space. The locking unit has a columnar shape and disposed in the containment space, the locking unit further having two flat surfaces, a side surface connected between an edge of each flat surface, and a supporting aperture accepting the first rod. Each side surface further has a first curved portion, a vertical surface connected to the first curved portion at one end and a second curved portion connected to another end of the vertical surface, and a first protrusion connected to both of the first curved portion and the second curved portion.
