Connector

1. A connector comprising: a housing; and a contact fixed to the housing, wherein:

the housing includes

an accommodation chamber which accommodates a part of the contact, and

a first opening which allows the accommodation chamber to communicate with an external space and a counterpart contact passes through;

the contact includes

a quadrangular tube which is accommodated in the accommodation chamber and has two open ends opposed to each other,

a first contact portion which is located inside the quadrangular tube and is brought into contact with the counterpart contact,

a mounted portion which is located outside the quadrangular tube and is mounted on a base plate, and

an elastic portion which is provided at a position such that the elastic portion couples the quadrangular tube to the mounted portion, and is elastically displaceable in a direction in which the two open ends of the quadrangular tube are opposed to each other;

the quadrangular tube includes a first wall provided between the first contact portion and the mounted portion, and second and third walls which are contiguous with the first wall and are opposed to each other in a direction parallel to a plane of the first wall;

the quadrangular tube and the elastic portion are arranged so as to overlap one another when viewed from a direction orthogonal to the first wall; and

the mounted portion and the elastic portion are located within a width of the first wall, the width being a length of the first wall with respect to a direction in which the second and third walls are opposed to each other.

2. The connector according to claim 1 , wherein:

the housing includes a second opening which allows the accommodation chamber to communicate with the external space and an insertion member passes through, the insertion member being inserted into the accommodation chamber at an opposite side of the accommodation chamber from that of the counterpart contact;

the contact includes a second contact portion which is located inside the quadrangular tube and is brought into contact with the insertion member; and

the second contact portion is displaced toward the first contact portion, and thereby the first contact portion is displaced in a same direction as that of the second contact portion.

3. The connector according to claim 1 , wherein the contact includes a fixed portion which is provided between the elastic portion and the mounted portion and is fixed to the housing.

4. The connector according to claim 1 , wherein:

the elastic portion includes bent portions and connecting portions each connecting two of the bent portions to each other;

the bent portions and the connecting portions are arranged in a plane parallel to the first wall; and

two connecting portions provided at both ends of one of the bent portions are arranged so as to overlap each other when viewed from the direction in which the two open ends of the quadrangular tube are opposed to each other.

5. The connector according to claim 1 , wherein: the quadrangular tube further includes a fourth wall which is contiguous with the second wall and the third wall and which faces the first wall; and

the elastic portion is elastically displaceable in directions in which the two open ends of the quadrangular tube are opposed to each other, in directions in which the first and the fourth wall face each other, and in directions in which the second and third walls face each other.

6. The connector according to claim 2 , wherein the contact includes a fixed portion which is provided between the elastic portion and the mounted portion and is fixed to the housing.

7. The connector according to claim 2 , wherein:

the elastic portion includes bent portions and connecting portions each connecting two of the bent portions to each other;

the bent portions and the connecting portions are arranged in a plane parallel to the first wall; and

two connecting portions provided at both ends of one of the bent portions are arranged so as to overlap each other when viewed from the direction in which the two open ends of the quadrangular tube are opposed to each other.

8. The connector according to claim 2 , wherein: the quadrangular tube further includes a fourth wall which is contiguous with the second wall and the third wall and which faces the first wall; and

the elastic portion is elastically displaceable in directions in which the two open ends of the quadrangular tube are opposed to each other, in directions in which the first and the fourth wall face each other, and in directions in which the second and third walls face each other.