Connector

1. A connector comprising:

a first connector which comprises a tubular outer housing and an inner housing received in the outer housing and in which a plurality of first terminals are provided in the inner housing;

a second connector which comprises a counterpart housing having a bottomed tubular shape and configured to receive the inner housing at a time of being inserted into the outer housing and in which a plurality of second terminals are provided in an inner surface of a bottom portion of the counterpart housing;

an elastic member which is provided in the outer housing and urges the inner housing toward a front side of the first connector in a fitting direction; and

a lock member which is provided in an opening end of the counterpart housing,

wherein the outer housing comprises a mechanism configured to elastically deform the lock member in a direction toward the inner housing in a middle of fitting the first connector and the second connector, and to allow the lock member to elastically return in a direction away from the inner housing at a time of completely fitting the first connector and the second connector,

wherein the inner housing comprises a lock part configured to be locked by the lock member which is begin elastically deformed in the middle of fitting the first connector and the second connector, and to be released from locking by the lock member when the lock member elastically returns at the time of completely fitting the first connector and the second connector,

wherein in the middle of fitting the first connector and the second connector, the lock member retreats the inner housing to a back surface of the first connector in the fitting direction against an urging force of the elastic member by a lock of the locking member to the lock part, and

wherein at the time of completely fitting the first connector and the second connector, the second connector allows the elastic member to elastically return and moves the inner housing in the fitting direction to the front side of the first connector by a release of the lock of the locking member to the lock part, so that the inner housing is guided toward the bottom portion of the counterpart housing, and the first terminal and the second terminal are connected with each other.

2. The connector according to claim 1 ,

wherein the inner housing comprises a conductive fitting detection member which detects a conduction of at least one pair of adjacent second terminals to detect a fitting state of the first connector and the second connector.

3. The connector according to claim 1 ,

wherein the outer housing has a groove part, and

wherein the inner housing comprises an engagement projection which is engaged in the groove part to regulate a movement range of the inner housing.

4. The connector according to claim 1 , further comprising:

a packing which is arranged to be interposed between an outer circumferential surface of the inner housing and an inner circumferential surface of the counterpart housing at the time of completely fitting the first connector and the second connector.

5. A connector comprising:

a first connector which comprises a tubular outer housing and an inner housing received in the outer housing and in which a plurality of first terminals are provided in the inner housing;

a second connector which comprises a counterpart housing having a bottomed tubular shape and configured to receive the inner housing at a time of being inserted into the outer housing and in which a plurality of second terminals are provided in an inner surface of a bottom portion of the counterpart housing;

an elastic member which is provided in the outer housing and urges the inner housing toward a front side of the first connector in a fitting direction;

a first projection which is provided in an inner surface of the outer housing;

a second projection which is provided in an outer surface of the inner housing; and

a lock member which is provided in an opening end of the counterpart housing,

wherein in a middle of fitting the first connector and the second connector, the lock member abuts on the first projection so as to be deformed elastically in a direction toward the inner housing and butts the second projection to retreat the inner housing to a back surface of the first connector in the fitting direction against an urging force of the elastic member, and

wherein at a time of completely fitting the first connector and the second connector, the lock member receives the first projection in a hole part provided in the lock member so as to elastically return in a direction away from the inner housing, and the lock member is released from butting the second projection such that the elastic member is allowed to elastically return to move the inner housing to the front side of the first connector, so that the inner housing is guided toward the bottom portion of the counterpart housing, and the first terminal and the second terminal are connected with each other.

6. The connector according to claim 5 ,

wherein the inner housing comprises a conductive fitting detection member which detects a conduction of at least one pair of adjacent second terminals to detect a fitting state of the first connector and the second connector.

7. The connector according to claim 5 ,

wherein the outer housing has a groove part, and

wherein the inner housing comprises an engagement projection which is engaged in the groove part to regulate a movement range of the inner housing.

8. The connector according to claim 5 , further comprising:

a packing which is arranged to be interposed between an outer circumferential surface of the inner housing and an inner circumferential surface of the counterpart housing at the time of completely fitting the first connector and the second connector.