Charging connector and method
A charging connector ( 10 ) has terminal fittings ( 20 ) including female-side main portions ( 21 ) connectable to a vehicle-side terminal ( 60 ) and having a wire (W) connected to the rear end of the main portion ( 21 ). Terminal accommodating portions ( 15 ) are formed internally with cavities ( 17 ) for accommodating the terminal fittings ( 20 ). Seals ( 30 ) are sandwiched between facing inner walls of the cavities ( 17 ) and the main portions ( 21 ). Wire accommodating portions ( 11, 12 ) are behind the terminal accommodating portions ( 15 ) for accommodating the wires (W) in a state where reaction forces push the terminal fittings ( 20 ) forward. Each terminal fitting ( 20 ) is biased constantly forward by the reaction force of the wire W against a frictional force with the seal ring ( 30 ), thereby being arranged at a frontmost position where the front end of the main portion ( 21 ) and a front wall ( 17 A) of the cavity ( 17 ) are in contact.
1. A charging connector connectable to a vehicle-side connector provided at a vehicle, comprising:
a terminal fitting including a main portion connectable to a vehicle-side terminal provided in the vehicle-side connector and having an end of a wire connected to the main portion;
a terminal accommodating portion internally formed with a cavity for at least partly accommodating the terminal fitting;
a seal member able to seal the terminal fitting; and
a wire accommodating portion provided behind the terminal accommodating portion for accommodating the wire in a state where a reaction force capable of pushing the terminal fitting forward is produced,
wherein the terminal fitting is biased constantly forward by the reaction force of the wire against a frictional force with the seal member.
2. The charging connector of claim 1 , wherein the seal member is sandwiched between facing surfaces of an inner wall of the cavity and the main portion to seal between the facing surfaces over the entire circumference.
3. The charging connector of claim 1 , wherein the terminal fitting is biased constantly forward by the reaction force of the wire against a frictional force with the seal member causes the terminal fitting to be arranged at a frontmost position where the front end of the main portion and the front wall of the cavity facing the front end of the main portion are substantially in contact.
4. The charging connector of claim 1 , further comprising a retainer behind the terminal accommodating portion for retaining the terminal fitting in the cavity by engaging from behind with a flange projecting out from the main portion of the terminal fitting.
5. The charging connector of claim 4 , wherein, in a state where the vehicle-side terminal is fit in the main portion, the terminal fitting is at a rearmost position where the flange and the retaining portion are engaged.
6. The charging connector of claim 1 , wherein:
the main portion includes at least one contact piece that resiliently contacts the vehicle-side terminal; and
the vehicle-side terminal and the contact piece slide as the vehicle-side terminal and the main portion are connected and separated.
7. The charging connector of claim 1 , wherein the terminal fitting is movable back and forth between the frontmost position and the rearmost position while being connected to and separated from the vehicle-side terminal.
8. The charging connector of claim 1 , wherein a frictional force between the vehicle-side terminal and the main portion is larger than the reaction force received from the wire.
9. The charging connector of claim 1 , wherein the frictional force of the seal member is adjusted by an oil or lubricant content amount thereof.