Internal combustion engine ignition coil apparatus

1. An internal combustion engine ignition coil apparatus comprising:

a cup-shaped case;

a center core disposed in said case;

a primary coil and a secondary coil disposed outside said center core inside said case;

a high-voltage cord having:

a first end portion electrically connected to said secondary coil by means of a high voltage terminal; and

a second end portion electrically connected to a spark plug; and

a protective tube covering an outer peripheral surface of said high-voltage cord,

an insertion aperture into which said high-voltage cord is inserted being formed in a bottom portion of said case,

a rim portion projecting externally being formed so as to surround said insertion aperture, and

a leading end portion of said protective tube covering and elastically engaging with said rim portion,

wherein:

a receiving portion having a radially-outwardly-projecting V-shaped cross-sectional shape when sectioned axially is formed on an end portion of said rim portion.

2. The internal combustion engine ignition coil apparatus according to claim 1 , wherein:

a stepped portion contacted by a leading end surface of said protective tube is formed on said receiving portion near said high-voltage terminal.

3. The internal combustion engine ignition coil apparatus according to claim 1 , wherein:

an adhesive is interposed between an inside diameter surface of said rim portion and an outer peripheral surface of said high-voltage cord.