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In a package box for a plurality of spark plugs, a paper tray has an array of lower cellular boxes provided to accommodate lower portions of spark plugs to protect their spark gaps against dimensional alteration, and an array of upper cellular boxes provided to retain upper portions of the spark plu

In a package box for a plurality of spark plugs, a paper tray has an array of lower cellular boxes provided to accommodate lower portions of spark plugs to protect their spark gaps against dimensional alteration, and an array of upper cellular boxes provided to retain upper portions of the spark plugs in place. A casing package is provided to accommodate the paper tray. The lower cellular boxes have circular crease lines each about the size so that Individual thread portions of the spark plugs are to be inserted, and having a plurality of incision lines provided to be oriented radially toward central portions of the circular crease lines. Accommodation holes are formed with pluralistic tabs by expanding the incision lines and bending along the circular crease lines so as to accommodate the thread portions of metallic shells of the spark plugs with the thread portions supportably engaged by the tabs when forcing outer electrodes and the thread portions of the spark plugs against sections surrounded by the circular crease lines. The upper cellular boxes have upper open ended U-shaped retainer holes to admit the head portions of insulators of the spark plugs so that the tray accommodates the spark plugs with the insulators exposed between the array of the upper and lower cellular boxes.

대표청구항 ▼

[ We claim:] [1.] A package box for a plurality of spark plugs, comprising:a paper tray including an array of lower cellular boxes provided to accommodate lower portions of spark plugs to protect their spark gaps, and an array of upper cellular boxes provided to retain upper portions of said spark p

[ We claim:] [1.] A package box for a plurality of spark plugs, comprising:a paper tray including an array of lower cellular boxes provided to accommodate lower portions of spark plugs to protect their spark gaps, and an array of upper cellular boxes provided to retain upper portions of said spark plugs in place;a casing package provided to accommodate said paper tray;said lower cellular boxes having circular crease lines each about the size so that individual thread portions of said spark plugs are to be inserted, and having a plurality of incision lines provided to be oriented radially toward central portions of said circular crease lines, so as to form a plurality of tabs which meet at a corresponding one of the central portions;accommodation holes being formed with the plurality of tabs by expanding said incision lines and bending along said circular crease lines so as to accommodate thread portions of metallic shells of said sparks plugs, with said thread portions supportably engaged by said tabs when forcing outer electrodes and the thread portions of said spark plugs against regions surrounded by said circular crease lines; andsaid upper cellular boxes having upper open ended U-shaped retainer holes to admit head portions of insulators of said spark plugs so that said tray accommodates said spark plugs with said head portions of said insulators exposed between said array of the upper cellular boxes and said array of the lower cellular boxes.