Abstract: A CD box comprises a seat and a cover. A center of the seat has an insertion hole for receiving the combining post. A periphery of the seat has an annular inner wall. A plurality of protruding strips are disposed around the annular inner wall. An upper surface of each protruding strip is formed as a downward inclined surface. An outer side of each downward inclined surface is formed with a plurality of positioning grooves. A section of annular inner wall is used to space two protruding strips. The sections are called as spacing sections. Each end of the protruding strip is an inclined surface. One edge of the cover has a plurality of inner protruding sheets corresponding to the spacing sections of the seat. Each inner protruding sheet is protruded with a positioning strip.

Abstract: A CD box comprises a seat and a cover. A center of the seat has an insertion hole for receiving the combining post. A periphery of the seat has an annular inner wall. A plurality of protruding strips are disposed around the annular inner wall. An upper surface of each protruding strip is formed as a downward inclined surface. An outer side of each downward inclined surface is formed with a plurality of positioning grooves. A section of annular inner wall is used to space two protruding strips. The sections are called as spacing sections. Each end of the protruding strip is an inclined surface. One edge of the cover has a plurality of inner protruding sheets corresponding to the spacing sections of the seat. Each inner protruding sheet is protruded with a positioning strip.