BACKGROUND OF THE INVENTION
1. Field of the invention
The present disclosure relates to an electrical connector, and more particularly to an electrical connector connecting cables with a printed circuit board (PCB).
2. Description of the related art
U.S. Patent Publication No. 20090227138 discloses an electrical connector. The electrical connector comprises an insulating housing and a plurality of contacts received in the insulating housing. The contacts are arranged into two rows in a longitudinal direction and the contacts in different rows comprise connecting beams thereof extending in two opposite directions perpendicular to the longitudinal direction. Tow rows of cables are assembled onto the connecting beams respectively and extend in the opposite directions. As the contacts and the cables are divided into two rows, the longitudinal dimension of the electrical connector could be reduced even if the number of the cables increases. However, as the cables extend in two opposite directions, the arrangement of the cables occupy more space in said two opposite directions and can not meet the miniaturization tendency of the electrical connector.
In view of the above, an improved electrical connector is desired to overcome the problems mentioned above.
SUMMARY OF THE INVENTION
Accordingly, an object of the present disclosure is to provide an electrical connector for miniaturization.
In order to achieve the object set forth, an electrical connector for connecting a plurality of cables is provided. The electrical connector comprises an insulating housing comprising a first mounting surface and a second mounting surface parallel to each other and a tongue portion extending downwardly in an up-to-down direction, the first mounting surface lower than the second mounting surface in the up-to-down direction forming a stepped surface, the tongue portion extending far away from the stepped surface and comprising opposite periphery surfaces; and a plurality of contacts received in the insulating housing, the contacts comprising first contacts and second contacts, the first contact comprising a first connecting portion on the first mounting surface and a first contacting portion extending along one periphery surface of the tongue portion while the second contact comprising a second connecting portion on the second mounting surface and a second contacting portion extending along the other periphery surface of the tongue portion.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an assembled, perspective view of an electrical connector assembly in accordance with a preferred embodiment of the present disclosure;
FIG. 2 is an exploded, perspective view of the electrical connector assembly shown in FIG. 1;
FIG. 3 is another view of the electrical connector assembly shown in FIG. 2;
FIG. 4 is a perspective view of a cable end connector of the electrical connector assembly shown in FIG. 1;
FIG. 5 is an exploded, perspective view of the cable end connector shown in FIG. 4;
FIG. 6 is a top view of the electrical connector assembly shown in FIG. 1;
FIG. 7 is a cross sectional view of the electrical connector assembly shown in FIG. 1 along line 7-7;
FIG. 8 is a cross sectional view of the electrical connector assembly shown in FIG. 1 along line 8-8.
FIG. 9 is a top view of a cable end connector in accordance with another embodiment.
DESCRIPTION OF PREFERRED EMBODIMENT
Reference will now be made to the drawings to describe the present disclosure in detail.
Referring to FIGS. 1 to 3, an electrical connector assembly 100 for electrically connecting a plurality of cables 50 with a printed circuit board (PCB) (not show) is provided. The electrical connector assembly 100 comprises a plug electrical connector and a receptacle electrical connector. In the instant invention, the plug electrical connector is a cable end connector 10 and while the receptacle electrical connector is a board end connector 20 matching with the cable end connector 10.
Referring to FIG. 4 and FIG. 5, the cable end connector 10 comprises an insulating housing 1 and a plurality of contacts 2, 4 received therein. The contacts comprise a plurality of first contacts 2 and a plurality of second contacts 4 each arranged in a row. In this embodiment, the contacts 2, 4 are insert-molded in the insulating housing 1. The insulating housing 1 comprises mounting surfaces for supporting the cables 50. The mounting surfaces comprises a first mounting surface 110 and a second mounting surface 111 parallel with each other. The first mounting surface 110 is lower than the second mounting surface 111 in an up-to-down direction perpendicular to the first and second mounting surfaces, forming a stepped structure. The first mounting surface 110 is defined as lower mounting surface while the second mounting surface 111 is defined as upper mounting surface. The stepped structure of the insulating housing 1 defines an opening 101 for the cables 50 extending therethrough. The insulating housing 1 comprises a tongue portion 12 extending downwardly and far away from the mounting surfaces for inserting into the board end connector 20. The tongue portion 12 comprises two opposite periphery surfaces and a matching surface 120 opposite to the mounting surfaces.
Referring to FIG. 5, the first contact 2 comprises a first connecting portion 21, a first contacting portion 22 bent squarely from the first connecting portion 21 and a first hook portion 23 bent from the first contacting portion 22. The structure of the second contact 4 is substantially the same with the first contact 2. The second contact 4 comprises a second connecting portion 41, a second contacting portion 42 bent squarely from the second connecting portion 41 and a second hook portion 43 bent from the second contacting portion 42. The difference between the first and second contacts is that the length of the second contacting portion 42 is longer than the first contacting portion 22 in the up-to-down direction. Referring to FIG. 4, the first connecting portion 21 is on the first mounting surface 110 while the second connecting portion 41 is on the second mounting surface 111. The first connecting portion 21 is lower than the second connecting portion 41. The first contact 2 is defined as the lower contact while the second contact 4 is defined as the upper contact. The first connecting portion 21 is closer the opening 101 of the insulating housing than the second connecting portion 41. The first connecting portion 21 extends opposite to and far away from the second connecting portion 41. The free ends of the first and second connecting portions 21, 41 connect carriers (not show). The carriers are opposite to each other before removing from the contact. The cables 50 are arranged into two rows in the up-to-down direction corresponding to the first and second connecting portions 21, 41. Said two rows of the cables 50 extend towards the same direction. The free end of the first connecting portion 21 faces the direction that the cable extending towards; while a right angle portion of the second connecting portion 41 and the second contacting portion 42 faces the direction that the cable extending towards. Referring to FIG. 3, the first and second contacting portions 22, 42 extend along the periphery surfaces of the tongue portion 12. The first and second hook portions 23, 43 locate on the matching surface 120 of the tongue portion 12.
Referring to FIGS. 6-8, in a top view, the first contacts 2 are half pitch offset from the second contacts 4 for convenient arrangement of the cables 50 assembled thereon. The board end connector 20 comprises a main body 201 defining a cavity for accommodating the tongue portion 12 of the cable end connector 10 and a plurality of matching contacts 202 extending into the cavity for contacting the contacts 2, 4 of the cable end connector 10. The matching contacts 202 are soldered on the PCB.
Furthermore, the cable end connector 10 comprises a metallic shell for protection and anti-EMI. The shell comprises a frame 6 surrounding the insulating housing 1 and a cover 7 assembled on the frame 6. The frame 6 comprises a tab 61 at the opening side of the insulating housing 1 while the cover 7 comprises a pair of latches 71 extending downwardly engaging the tab 61.
FIG. 9 is another embodiment of the present disclosure where the width of the first connecting portion 21 is wider than the second connecting portion 41 so as to improve the high frequency performance.
According to the above described embodiments, a cable end connector 10 comprising first and second mounting surfaces 110, 111 in different plane is provided. The first and second mounting surfaces 110, 111 define a stepped structure; the cables 50 supported by the first and second mounting surfaces 110, 111 form an upper row and a lower row for convenient arrangement thereof The cables 50 of upper row and the lower row extend in the same direction so as to take advantage of the space of the connector itself and meet the requirement of miniaturization.
Although the present invention has been described with reference to particular embodiments, it is not to be construed as being limited thereto. Various alterations and modifications can be made to the embodiments without in any way departing from the scope or spirit of the present invention as defined in the appended claims.
Patent Application
20140329415
