Abstract: Ribs (71) of a front member (60) can suppress backlash between first and second housings (10, 30) by coming into contact with the inner peripheral surface of a receptacle (12) when the first and second housings (10, 30) are connected properly. A tapered surface (18) is provided on the inner peripheral surface of the receptacle (12) and is inclined in a direction to gradually reduce inner dimensions of the receptacle (12) from an intermediate position of this receptacle (12) in a depth direction toward a back end. Each rib (71) has a curved surface cross-section and is formed to gradually increase a height from a front end in a fitting direction toward a rear end and includes an inclined portion (74) configured to come into contact along the tapered surface (18) of the receptacle (12) as the first and second housings (10, 30) are connected properly.

Abstract: In a terminal metal fitting assembling structure (10,30), a projecting portion (45) is provided on a plate-like overlap portion (32) which is formed on a second terminal metal fitting (30). In addition, the position of the projecting portion (45) is set outside an area (A) of the overlap portion (32) that is overlapped by a head portion (50A) of a tightening bolt (50). Due to this, when the terminal metal fittings (10,30) are tightened by the tightening bolt (50), a plate-like overlap portion (12) formed in the first terminal metal fitting (10) is flexibly deformed and is pressed by the projecting portion (45) against the plate-like overlap portion (32) of the second terminal metal fitting (30), so that the two terminal metal fittings (10,30) can be strongly contacted with each other by the resilient force generated by the flexibly deformed plate-like overlap portion (12). This makes it possible to increase the contact pressure between the two terminal metal fittings.