Plug connector having a housing module with two housings interlocked by deformed tongue having two legs

1. A plug connector comprising:

a housing module having a mating end and including:

a first housing; and

a second housing assembled with the first housing to define a cavity therebetween; and

a mating board received in the cavity and exposed to an exterior at a position close to the mating end; wherein

the first housing has a main portion and a tongue unitarily extending from the main portion, the second housing has a receiving space receiving the tongue, and the tongue is deformed to latch within the receiving space;

the tongue comprises a base portion and a pair of legs apart from each other and extending from the base portion into the receiving space;

the receiving space comprises a first part and a second part, a distance between a pair of opposite edges of the first part being shorter than a distance between a pair of opposite edges of the second part;

the pair of legs are first inserted into the receiving space along a direction that is perpendicular to a mating direction and then are deformed so that a distance between the two legs in the first part is shorter than a distance between the two legs in the second part; and

the pair of legs are deformed by inserting an exterior tool between the two legs and pressing the two legs against the edges of the second part of the receiving space.

2. The plug connector of claim 1 , wherein the housing module comprises a screw disposed near the mating end to assemble the first housing with the second housing together, and the tongue is disposed near an end of the housing module opposite to the mating end.

3. The plug connector of claim 1 , further comprising an unlocking member having a body portion, a pair of extending portions extending from two opposite ends of the body portion, and a tail portion connected with the two extending portions, each of the extending portions having a protuberance at an end thereof, and wherein the housing module comprises a stage disposed thereon close to the protuberance.

4. The plug connector of claim 3 , wherein the housing module comprises a receiving space having a front wall and a rear wall opposite to the front wall, and a spring received in the receiving space.

5. The plug connector of claim 4 , wherein the housing module comprises a guide block disposed thereon, and the extending portion has a guide rail for limiting a movement of the guide block.

6. A plug connector comprising:

a housing module having a mating end along a front-to-back direction, and including:

a first housing including a main portion and a tongue unitarily extending from the main portion; and

a second housing forming a receiving space and assembled with the first housing in a vertical direction perpendicular to the front-to-back direction to define a cavity therebetween in the vertical direction; and

a printed circuit board received in the cavity; wherein

said receiving space is configured to allow the tongue to be inserted therein during assembling initially, and successively to allow the tongue to be outwardly deformed so as to prevent the tongue from leaving the receiving space backwardly once assembled;

said receiving space defines a divergent configuration with two opposite edges thereof, and the deformed tongue includes two legs intimately and compliantly seated upon said two opposite edges, respectively; and

the two legs are deformed away from each other in the front-to-back direction.

7. The plug connector as claimed in claim 6 , wherein said receiving space is exposed to an exterior sidewardly.

8. The plug connector as claimed in claim 6 , wherein each of said first housing and said second housing has various thicknesses thereof not only for complying with an exterior contour but also reinforcing strength thereof.

9. The plug connector as claimed in claim 8 , further including an unlocking member moveable along the front-to-back direction, wherein said unlocking member includes a restricting post adjacent to the tongue, and the second housing forms a restricting groove adjacent to the receiving space to protectively receiving said restricting post therein.

10. The plug connector as claimed in claim 7 , wherein said printed circuit board has a front end exposed within the mating end.

11. A plug connector comprising:

a housing module having a mating end along a front-to-back direction, the housing module including:

a first housing including a main portion and a tongue unitarily extending from the main portion; and

a second housing forming a receiving space and assembled with the first housing in a vertical direction perpendicular to the front-to-back direction to define a cavity therebetween in the vertical direction; and

a printed circuit board received in the cavity; wherein

the housing module is metallic;

the receiving space is exposed to an exterior sidewardly; and

the tongue has two legs deformed respectively in opposite directions along the front-to-back direction so as to prevent the tongue from leaving the receiving space.