Board connector

1. A board connector comprising:

a first connector, the first connector including first terminals and a first housing capable of accommodating the first terminals, each first terminal including a first contact portion and a second contact portion connected by a connecting portion, the first contact portion shaped to project outward from at least one recessed groove portion formed in the first housing, the connecting portion being initially disposed in a position substantially parallel to a floor of the housing and a printed circuit board on which the first connector is mounted; and

a second connector, the second connector being configured to mate with the first connector and including second terminals and a second housing capable of accommodating the second terminals, each second terminal including a first contact portion and a second contact portion;

wherein:

the first terminals and the second terminals contact each other at first contact points and second contact points, respectively; and

each first terminal is capable of showing a high flexibility and each second terminal is capable of showing a high rigidity at either one of the first contact point and the second contact point, and each first terminal is capable of showing a high rigidity and each second terminal is capable of showing a high flexibility at the other one of the first contact point and the second contact point; and

upon contact of the first terminal and the second terminal, the connecting portion is displaced from its position substantially parallel to the floor of the housing to a position angled toward the printed circuit board.

2. The board connector of claim 1 , wherein the terminals showing the high flexibility at the first contact points have a natural frequency thereof, different from the terminals showing the high flexibility at the second contact points.

3. The board connector of claim 2 , wherein each first terminal first contact portion has a high flexibility and each first terminal second contact portion has a high rigidity.

4. The board connector of claim 3 , wherein each second terminal first contact portion has a high rigidity and each second terminal second contact potion has a high flexibility.

5. The board connector of claim 4 , wherein the first contact portions of each first terminal and each second terminal come into contact with each other at the first contact point.

6. The board connector of claim 5 , wherein the second contact portions of each first terminal and each second terminal come into contact with each other at the second contact point.

7. The board connector of claim 6 , wherein each first terminal further includes a held portion thereof held by the first housing, the second contact portion being connected to the held portion and having a distal end thereof projecting into each recessed groove portion of the first housing, and the first contact portion being connected to the second contact portion via a U-shaped connecting portion and having a distal end thereof projecting into each recessed groove portion of the first housing while facing the second contact portion.

8. The board connector of claim 7 , wherein each second terminal further includes a held portion thereof held by the second housing, the first contact portion being connected to the held portion and in contact with one of side walls of each protruding portion of the second housing, the second contact portion having a cantilever-shape and one end thereof connected to the first contact portion and the other end thereof distant apart from the other side wall of each protruding portion.

9. The board connector of claim 8 , wherein each second terminal comes to a position where each second terminal is sandwiched between the first contact portion and the second contact portion of each first terminal when the protruding portions are inserted into the recessed groove portions.

10. The board connector of claim 4 , wherein the second contact portions of each first terminal and each second terminal come into contact with each other at the second contact point.

11. The board connector of claim 10 , wherein each first terminal further includes a held portion thereof held by the first housing, the second contact portion being connected to the held portion and having a distal end thereof projecting into each recessed groove portion of the first housing, and the first contact portion being connected to the second contact portion via a U-shaped connecting portion and having a distal end thereof projecting into each recessed groove portion of the first housing while facing the second contact portion.

12. The board connector of claim 11 , wherein the first contact portions of each first terminal and each second terminal come into contact with each other at the first contact point.

13. The board connector of claim 11 , wherein each second terminal further includes a held portion thereof held by the second housing, the first contact portion being connected to the held portion and in contact with one of side walls of each protruding portion of the second housing, the second contact portion having a cantilever-shape and one end thereof connected to the first contact portion and the other end thereof distant apart from the other side wall of each protruding portion.

14. The board connector of claim 13 , wherein each second terminal comes to a position where each second terminal is sandwiched between the first contact portion and the second contact portion of each first terminal when the protruding portions are inserted into the recessed groove portions.

15. The board connector of claim 1 , wherein each first terminal first contact portion has a high flexibility and each first terminal second contact portion has a high rigidity.

16. The board connector of claim 15 , wherein each second terminal is provided with a first contact portion having the high rigidity and a second contact potion having the high flexibility.