Bait casting reel having spool detaching mechanism

A bait casting reel for fishing including a reel frame having an opening, a spool rotatably mounted in the opening of the reel frame, and a spool detaching mechanism, detachably engaged with the frame, for rotatably supporting the spool, the bait casting reel comprising:

• the reel frame provided on an inner periphery of the opening with a first engaging protrusion having a predetermined number of cutouts, a second engaging protrusion, and an engaging groove formed between the first and second protrusions and extended along the entire length of the inner periphery of the opening;
• the spool detaching mechanism including a cover engaged with the opening of the reel frame, and drag means fixed onto the cover to apply drag force to the spool;
• and
• the cover including a circular engaging edge engaged with the reel frame, and inserted into the cutout of the first engaging protrusion to guide the cover along the engaging groove, and a locking member provided adjacent to the opening of the reel frame.