Connector set with a locking device

1. A connector set comprising:

a first member including a locking device having a proximal portion formed as a protrusion ranging in parallel with an axis of the first member, a resilient beam extending from the proximal portion and over-hanging a wall of the first member, the resilient beam being elastically deformable about a resilient connection to the proximal portion, the resilient connection extending in a direction generally parallel to the axis of the first member, and a locking projection projecting from the resilient beam; and

a second member configured to receive the first member in a direction of the axis of the first member, the second member including an engaging portion configured to latch the locking projection.

2. The connector set of claim 1 , wherein the locking device includes means for regulating repulsive force of the locking device.

3. The connector set of claim 1 , wherein a front end of the locking device includes a chamfered bevel.

4. The connector set of claim 2 , wherein the means for regulating repulsive force on the locking device is a slit formed at a rear end of the locking device, the slit partially separating the proximal portion and the resilient beam.

5. The connector set of claim 2 , wherein the means for regulating repulsive force of the locking device is a slot formed around the locking projection.

6. The connector set of claim 1 , wherein the second member is configured to house the first member.

7. The connector set of claim 6 , wherein the resilient beam is repulsively supported in an inner surface of the second member.