Connector assembly

1 . A connector assembly including a first connector and a second connector that are fitted to each other along a fitting direction such that a second contact of the second connector is electrically connected to a first contact of the first connector,

wherein the first connector includes a first exposed surface facing the second connector and a retention projection projecting in the fitting direction from the first exposed surface toward the second connector,

the second connector includes a second exposed surface facing the first connector and a projection accommodating portion of recess shape which is formed at the second exposed surface and in which at least a part of the retention projection is accommodated,

the first connector includes: a first contacting portion disposed on a lateral surface of the retention projection; a second contacting portion disposed on a lateral surface of the retention projection opposite to the lateral surface having the first contacting portion thereon, at a position closer to a base portion of the retention projection than the first contacting portion is; and a third contacting portion disposed on the first exposed surface at a position away from the lateral surface, having the first contacting portion thereon, of the retention projection in an opposite direction from the second contacting portion, and

when the first connector and the second connector are fitted to each other, at least a part of the retention projection is accommodated in the projection accommodating portion, the first contacting portion and the second contacting portion separately make contact with an inner surface of the projection accommodating portion, and the third contacting portion makes contact with the second exposed surface, whereby a fitting state between the first connector and the second connector is maintained,

wherein the retention projection includes a hook portion protruding in a direction perpendicular to the fitting direction and having the first contacting portion at its end, and

the projection accommodating portion includes a receiving portion that receives the hook portion.

2 . The connector assembly according to claim 1 ,

wherein a ratio LZ/LX of a distance LZ between the first contacting portion and the second contacting portion in the fitting direction to a distance LX between the first contacting portion and the third contacting portion in a direction perpendicular to the fitting direction is not greater than an incline S of a normal line with respect to the direction perpendicular to the fitting direction, the normal line being perpendicular to a tangent plane formed by the hook portion and the receiving portion contacting each other when the hook portion is received by the receiving portion.

3 . The connector assembly according to claim 1 ,

wherein the second connector is a garment-side connector attached to a garment, and

the first connector is a module-side connector detachably fitted to the garment-side connector.

4 . The connector assembly according to claim 1 ,

wherein the first connector includes a first insulator retaining the first contact,

the second connector includes a second insulator retaining the second contact,

at least a part of the first exposed surface is formed by the first insulator,

at least a part of the second exposed surface is formed by the second insulator,

the retention projection is formed by the first contact, and

the projection accommodating portion is formed by the second contact.

5 . The connector assembly according to claim 4 ,

wherein the third contacting portion is formed by a protuberance portion formed in the first insulator, and

the second contact forms a part of the second exposed surface with which the third contacting portion makes contact.

6 . The connector assembly according to claim 5 ,

wherein the first connector includes: a plurality of the first contacts retained by the first insulator and aligned in an alignment direction perpendicular to the fitting direction; and a plurality of the protuberance portions formed in the first insulator and aligned in the alignment direction,

the second connector includes a plurality of the second contacts retained by the second insulator and aligned in the alignment direction,

a plurality of the first contacting portions and a plurality of the second contacting portions are formed by the plurality of the first contacts, and

a plurality of the third contacting portions are formed by the plurality of the protuberance portions.

7 . The connector assembly according to claim 4 ,

wherein the first connector includes an auxiliary contact retained by the first insulator,

the third contacting portion is formed by the auxiliary contact, and

the second contact forms a part of the second exposed surface with which the third contacting portion makes contact.

8 . The connector assembly according to claim 7 ,

wherein the first connector includes: a plurality of the first contacts retained by the first insulator and aligned in an alignment direction perpendicular to the fitting direction; and a plurality of the auxiliary contacts retained by the first insulator and aligned in the alignment direction,

the second connector includes a plurality of the second contacts retained by the second insulator and aligned in the alignment direction,

a plurality of the first contacting portions and a plurality of the second contacting portions are formed by the plurality of the first contacts, and

a plurality of the third contacting portions are formed by the plurality of the auxiliary contacts.

9 . The connector assembly according to claim 4 ,

wherein the third contacting portion is formed by the first contact, and

the second contact forms a part of the second exposed surface with which the third contacting portion makes contact.

10 . The connector assembly according to claim 9 ,

wherein the first connector includes a plurality of the first contacts retained by the first insulator and aligned in an alignment direction perpendicular to the fitting direction,

the second connector includes a plurality of the second contacts retained by the second insulator and aligned in the alignment direction, and

a plurality of the first contacting portions, a plurality of the second contacting portions, and a plurality of the third contacting portions are formed by the plurality of the first contacts.

11 . The connector assembly according to claim 4 ,

wherein the first connector includes a third contact retained by the first insulator,

the second connector includes a fourth contact retained by the second insulator, and

when the second connector is fitted to the first connector, the fourth contact is electrically connected to the third contact.

12 . The connector assembly according to claim 11 ,

wherein the third contacting portion is formed by each of the first contact and the third contact, and

each of the second contact and the fourth contact forms a part of the second exposed surface with which the third contacting portion makes contact.

13 . The connector assembly according to claim 12 ,

wherein the first connector includes: a pair of the first contacts retained by the first insulator and disposed at a distance along an alignment direction perpendicular to the fitting direction; and a plurality of the third contacts retained by the first insulator and aligned in the alignment direction between the pair of the first contacts,

the second connector includes: a pair of the second contacts retained by the second insulator and disposed at a distance along the alignment direction; and a plurality of the fourth contacts retained by the second insulator and aligned in the alignment direction between the pair of the second contacts,

a pair of the first contacting portions and a pair of the second contacting portions are formed by the pair of the first contacts, and

a plurality of the third contacting portions are formed by the pair of the first contacts and the plurality of the third contacts.

14 . The connector assembly according to claim 11 ,

wherein the third contacting portion is formed by the third contact, and

the fourth contact forms a part of the second exposed surface with which the third contacting portion makes contact.

15 . The connector assembly according to claim 14 ,

wherein the first connector includes: a pair of the first contacts retained by the first insulator and disposed at a distance along an alignment direction perpendicular to the fitting direction; and a plurality of the third contacts retained by the first insulator and aligned in the alignment direction between the pair of the first contacts,

the second connector includes: a pair of the second contacts retained by the second insulator and disposed at a distance along the alignment direction; and a plurality of the fourth contacts retained by the second insulator and aligned in the alignment direction between the pair of the second contacts,

a pair of the first contacting portions and a pair of the second contacting portions are formed by the pair of the first contacts, and

a plurality of the third contacting portions are formed by the plurality of the third contacts.

16 . The connector assembly according to claim 1 ,

wherein the first connector includes a first insulator retaining the first contact,

the second connector includes a second insulator retaining the second contact,

at least a part of the first exposed surface is formed by the first insulator,

at least a part of the second exposed surface is formed by the second insulator,

the retention projection is formed by the first insulator, and

the projection accommodating portion is formed by the second insulator.

17 . The connector assembly according to claim 16 ,

wherein the first connector includes: a pair of the retention projections formed by the first insulator and disposed at a distance along an alignment direction perpendicular to the fitting direction; and a plurality of the first contacts retained by the first insulator and aligned in the alignment direction between the pair of the retention projections,

the second connector includes: a pair of the projection accommodating portions formed by the second insulator and disposed at a distance along the alignment direction; and a plurality of the second contacts retained by the second insulator and aligned in the alignment direction between the pair of the projection accommodating portions,

a pair of the first contacting portions and a pair of the second contacting portions are formed by the pair of the retention projections, and

a plurality of the third contacting portions are formed by the plurality of the first contacts.

18 . The connector assembly according to claim 1 ,

wherein the first connector is a garment-side connector attached to a garment, and

the second connector is a module-side connector detachably fitted to the garment-side connector.

19 . The connector assembly according to claim 18 ,

wherein the first contact is electrically connected to a cable.

20 . The connector assembly according to claim 18 ,

wherein the first contact is electrically connected to the circuit board.

21 . The connector assembly according to claim 20 ,

wherein the circuit board extends in parallel to the first exposed surface.

22 . The connector assembly according to claim 20 ,

wherein the circuit board extends along the fitting direction.