US Patent 9099803 Joint connector and assembling method thereof

A joint connector and an assembling method are provided for simultaneously achieving waterproofing and double locking. A ground joint connector (1) includes wire-side terminals (20), a ground terminal (30), a connector housing (40), waterproof plugs (5) and a seal ring (6). The housing (40) includes a wire-side housing (41) and a ground-side housing (42). When the wire-side housing (41) is fixed to the ground-side housing (42) at a first position, locking lances (48) are not restricted at a locking position for locking the wire-side terminal (29) by lance locks (49) in the ground-side housing (42). On the other hand, when the wire-side housing (41) is fixed to the ground-side housing (42) at a second position, the locking lances (48) are restricted at the locking position for locking the wire-side terminals (20) by the lance locks (49).