Connection fitting for a corrugated tube

A connection fitting for a corrugated tube comprising:

• a cylindrical housing for receiving an end of the corrugated tube, said housing having
• a sunken portion formed on a side surface of the housing, the sunken portion having a circumferential width of about half a circumference of the cylindrical housing,
• a slit divided into two slit portions by a wall element provided in the sunken portion, the wall element having a wall element surface, the two slit portions running circumferentially at a bottom of the sunken portion and
• a pair of covering elements formed at opposite sides of said slit portions;
• and
• a U-shaped locking element received within the sunken portion for fixing the corrugated tube, said locking element having
• an inner peripheral surface with a rib projecting from the inner peripheral surface of the locking element and divided into two rib portions by a recess in the locking element inner peripheral surface, the two rib portions corresponding to the two slit portions, such that the rib fits into the slit, the rib having a width slightly smaller than a width of the slit in the cylindrical housing for receiving the rib within the slit, the recess corresponding in size to and receiving the wall element such that substantially the entire wall element surface is in contact with the recess, and a pair of hooklike elements for positively engaging with the covering elements.