Patent ID: 6236540
Filing Date: 2001-05-22
Classification: G11B

Abstract:
A disc cartridge comprising:paired upper and lower cartridge halves forming a main cartridge body portion for housing a disc-shaped recording medium;an engagement projection integrally formed in the vicinity of a corner of one of the upper and lower cartridge halves so that the distal end thereof is engaged with the other cartridge half;an insertion hole integrally formed in the other cartridge half so as to be passed through by said engagement projection of said one of the upper and lower cartridge halves, said insertion hole having a rim portion;an abutment protuberantly formed around said engagement projection for compressing against the rim portion of said insertion hole formed in the other cartridge half wherein said abutment is integrally formed in the same cartridge half as said engagement projection; andthe distal end of said engagement projection protruded via said insertion hole is deformed by non-vibration heating means so as to form a retainer in said insertion hole to secure said upper and lower cartridge halves.