Connector and connector assembly

1. A connector, comprising:

a first flexible wiring board including a first signal wiring and a first ground conductor;

a second flexible wiring board including a second signal wiring and a second ground conductor;

a plate-shaped ground plate, which is provided between the first flexible wiring board and the second flexible wiring board, and includes first contact portions which are brought into contact with each of the first ground conductor and the second ground conductor; and

a first insulator forming an accommodation space for holding the first flexible wiring board, the second flexible wiring board, and the ground plate,

wherein the first insulator forms the accommodation space so as to cover at least a part of each of five portions including distal end portions, both side end portions, and two main surface portions, which face outward, of a whole of the first flexible wiring board, the second flexible wiring board, and the ground plate, and holds the ground plate under a pressing state,

wherein a portion of each of the first signal wiring and the second signal wiring is exposed to an outside of the first insulator, and

wherein a portion of at least one side end portion of the ground plate is exposed to the outside of the first insulator.

2. The connector according to claim 1 , wherein the first insulator includes:

a main body portion configured to hold the ground plate under a pressing state; and

a protecting portion having a width narrower than a width of the main body portion so as to expose the portion of the at least one side end portion of the ground plate to the outside.

3. The connector according to claim 2 , wherein the protecting portion includes:

a plate holding groove, into which a protected portion including the distal end portion of the ground plate is to be fitted inside; and

a distal end protecting portion configured to block at least a part of the plate holding groove and the outside of the first insulator.

4. The connector according to claim 3 , wherein the distal end protecting portion includes a through hole for connecting the plate holding groove and the outside of the first insulator.

5. The connector according to claim 1 , wherein the ground plate further includes a first elastic portion configured to apply, by having elasticity, a force toward one of the first ground conductor and the second ground conductor to at least one of the first contact portions.

6. The connector according to claim 5 ,

wherein the ground plate further includes a flat plate-shaped main plate portion,

wherein the first elastic portion includes a base end portion, which is connected to the main plate portion to be bent or curved, and a plate-shaped portion extending from the base end portion to be connected to the at least one of the first contact portions, and

wherein the at least one of the first contact portions is positioned closer to the distal end portion of the ground plate than the base end portion.

7. The connector according to claim 1 ,

wherein the first flexible wiring board, the second flexible wiring board, the ground plate, and the first insulator includes a first locking portion, a second locking portion, a third locking portion, and a fitting retainer portion respectively, which are aligned in one direction to form a space when the first flexible wiring board, the second flexible wiring board, and the ground plate are held in the first insulator, and

wherein the connector further includes a retainer member, which is fixed to the fitting retainer portion and penetrates the first locking portion, the second locking portion, and the third locking portion, which are aligned in the one direction.

8. The connector according to claim 1 ,

wherein the first flexible wiring board further includes a third ground conductor configured on a main surface different from a main surface on which the first ground conductor is configured, and

wherein the second flexible wiring board further includes a fourth ground conductor configured on a main surface different from a main surface on which the second ground conductor is configured.

9. A connector assembly, comprising:

the connector according to claim 1 ; and

a mating connector to be fitted to the connector;

the mating connector including:

a first contact to be brought into contact with the first signal wiring; a second contact to be brought into contact with the second signal wiring;

a ground metal fitting to be brought into contact with a portion of the at least one side end portion of the ground plate exposed to the outside of the first insulator of the ground plate; and

a second insulator configured to hold the first contact and the second contact.

10. The connector assembly of claim 9 , wherein the ground metal fitting includes:

a second contact point to be brought into contact with a portion of the at least one side end portion of the ground plate; and

a second elastic portion configured to apply, by having elasticity, a force toward the portion of the at least one side end portion of the ground plate to the second contact point.

11. The connector assembly according to claim 9 ,

wherein the mating connector further includes a metal shell provided in a vicinity of the second insulator,

wherein the metal shell includes a flat plate-shaped shell side surface portion provided in correspondence to the side surface of the second insulator,

wherein the ground metal fitting includes a plate spring contact, and

wherein the shell side surface portion includes a shell opening portion, to which one end of the ground metal fitting is to be fixed.

12. The connector assembly according to claim 9 ,

wherein portions of both side end portions of the ground plate are exposed to the outside of the first insulator,

wherein the ground metal fitting is provided in a pair on each side of the portions of both of the exposed side end portions of the ground plate, and

wherein the pair of ground metal fittings is configured to sandwich, from sides, the portions of both of the exposed side end portions of the ground plate to be brought into contact with the portions.