1. Field of the Invention
The present invention relates to a connector, and more particularly to a connector capable of connecting with a mating connector firmly.
2. The Related Art
A traditional connector includes an insulating housing, a plurality of terminals and a shell. The insulating housing has a base and a tongue extending forward from a front of the base. The terminals are assembled in the insulating housing and further project rearward out of a rear of the base. The shell encloses the insulating housing with the terminals therein and is spaced from the tongue to define an inserting space between the shell and the tongue. The shell has a top plate of which two sides of a front define two openings communicating with the inserting space. A rear side of each opening extends forward into the corresponding opening to form an elastic arm further inclined into the inserting space. When a plug connector is inserted into or pulled out of the inserting space of the connector, the elastic arms provide insertion and extraction strength therefor. However, the insertion and extraction strength only provided by the elastic arms is so little that the plug connector is apt to fall off from the connector in use. As a result, the electrical connection between the plug connector and the connector is often broken off.
Accordingly, an object of the present invention is to provide a connector which is connected with a printed circuit board (PCB) for mating with a plug connector. The connector includes an insulating housing having a base and a tongue extending forward from a front of the base, a plurality of terminals assembled in the insulating housing respectively and further projecting out of a rear of the base for being soldered with the PCB, a first shell and a second shell. The first shell has a receiving space surrounded by a top plate, two lateral plates and a bottom plate. Two sides of a front of the top plate define a pair of first openings spaced from each other and communicating with the receiving space. A rear side of each first opening extends forward into the corresponding first opening to form an elastic arm with a free end thereof arched downward into the receiving space. The insulating housing is inserted forward in the receiving space with the elastic arms located over the tongue. The second shell has a base board electrically fixed on the top plate of the first shell. Two sides of a front of the base board define a pair of second openings corresponding to the first openings of the first shell. A rear side of each second opening protrudes forward into the corresponding second opening to form an extending arm resting against a top of the corresponding elastic arm for strengthening insertion and extraction strength of the elastic arms acting on the plug connector.
As described above, the first shell encloses the insulating housing therein and then the second shell is fixed on the first shell. The extending arm rests on the corresponding elastic arm to strengthen the insertion and extraction strength when the plug connector is inserted into or pulled out of the connector.
The present invention will be apparent to those skilled in the art by reading the following description thereof, with reference to the attached drawings, in which:
Referring to the drawings in greater detail, and first to
With reference to
The first shell 30 has a rectangular top plate 31 of which two opposite side edges extend downward to form a pair of lateral plates 32. Bottoms of the lateral plates 32 extend toward each other to form a pair of bottom plates 33 engaged with each other. The top plate 31, the lateral plates 32 and the bottom plates 33 cooperate with one another to form a receiving space 36 thereamong. Two sides of a front of the top plate 31 define a pair of first openings 37 spaced from each other and communicating with the receiving space 36. A rear side of each first opening 37 extends forward into the corresponding first opening 37 to form an elastic arm 38 with a free end thereof arched downward into the receiving space 36. Two rear edges of the pair of lateral plates 32 extend rearward to form a pair of connecting plates 321 of which two top ends protrude towards each other and then are inclined downward to form two first restricting portions 322 located behind the receiving space 36. Two bottom ends of the pair of connecting plates 321 protrude towards each other to form two second restricting portions 323. The connecting plate 321, the first restricting portion 322 and the second restricting portion 323 together define a fixing structure 3210. Each lateral plate 32 is punched oppositely to the receiving space 36 to form two inverted-L shaped soldering portions 34 spaced from each other along the front-to-rear direction of the lateral plate 32. A rear of each bottom plate 33 protrudes upward to form a bump 35 projecting in the receiving space 36.
Referring to
Referring to
As described above, the first shell 30 encloses the insulating housing 10 therein and then the second shell 40 is fixed on the first shell 30. The connector 100 is fixed on the PCB by means of the first shell 30 and the second shell 40. So, the connector 100 can be fixed to the PCB firmly. The extending arm 42 rests on the corresponding elastic arm 38 to strengthen insertion and extraction strength when the plug connector is inserted into or pulled out of the connector 100.