BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical connector assembly, and more particularly to an electrical connector assembly can be engaged in two directions with different number of the terminals.
2. Description of the Related Art
U.S. Pat. No. 7,311,526 issued on Dec. 25, 2007, discloses a magnetic connector including a plug and a receptacle relying on magnetic force to maintain contact. The plug and receptacle each defines at least one magnet and a magnetic element for attracting the magnets, which makes the plug can be combined with the receptacle by magnetic attraction so as to achieve the purpose of power supply. However, the number of terminals of the plug and receptacle must be consistent when the magnetic connector is connected.
Therefore, an improved electrical connector assembly is highly desired to meet overcome the requirement.
BRIEF SUMMARY OF THE INVENTION
An object of the present invention is to provide an electrical connector assembly can be engaged in two directions with different number of the terminals and having a detection function.
In order to achieve above-mentioned object, an electrical connector assembly includes a first connector and a second connector. The first connector includes a first terminal group and a first magnetic element around the first terminal group, the first terminal group defines a first central terminal and two first outer terminals located at both sides of the first central terminal. The second connector includes a second terminal group and a second magnetic element around the second terminal group, the second terminal group defines a second central terminal, a second outer terminal located at a side of the second central terminal and an elastic terminal located at another side of the second central terminal. When the first connector is engaging with the second connector in a first position, the first magnetic element and the second magnetic element are attached to each other in order to maintain the mating between the first and second connector, the first central terminal is contacting the second central terminal, the second outer terminal is contacting one of the first outer terminals and the elastic terminal is elastically abutting against the first magnetic element of the first connector in order to form electrical transmission, when the first connector is engaging with the second connector by rotating 180 degree to a second position, the first central terminal is contacting the second central terminal, the second outer terminal is contacting the other one of the first outer terminals and the elastic terminal is elastically abutting against the first magnetic element of the first connector in order to form electrical transmission.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description of the present embodiment when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view showing an electrical connector assembly in accordance with the present invention;
FIG. 2 is another perspective view of the electrical connector assembly shown in FIG. 1;
FIG. 3 is an exploded perspective view of a first connector of the electrical connector assembly shown in FIG. 1;
FIG. 4 is a partly exploded perspective view of a second connector of the electrical connector assembly shown in FIG. 1;
FIG. 5 is an exploded perspective view of a second connector of the electrical connector assembly shown in FIG. 1;
FIG. 6 is a cross-sectional perspective view of the electrical connector assembly take along the line 6-6 shown in FIG. 1;
FIG. 7 is a cross-sectional perspective view of the electrical connector assembly take along the line 6-6 shown in FIG. 1, wherein the electrical connector assembly is connected; and
FIG. 8 is a cross-sectional perspective view of the electrical connector assembly take along the line 6-6 shown in FIG. 1, wherein the first connector is connected with the second connector by rotating 180 degrees.
DESCRIPTION OF PREFERRED EMBODIMENT OF THE INVENTION
Reference will now be made to the drawing figures to describe a preferred embodiment of the present invention in detail. Referring to FIG. 1 and FIG. 2, an electrical connector assembly 100 is used to achieve power supply. The electrical connector assembly 100 includes a first connector 1 connected to a cable 3 and a second connector 2 used for mounting on a circuit board, the second connector 2 is usually installed in a device, such as tablet PCs or laptops. The second connector 2 is mounted on the side of the device and retracted within the outside of the device so that a receiving cavity is formed between the housing and the front surface of the second connector, and the receiving cavity is used for exactly the first connector inserted into.
Referring to FIG. 3, the first connector 1 includes a first insulative housing 10, a first terminal group 11 fixed in the first insulative housing 10, a first magnetic element 12 around the first terminal group 11 and a insulative shell 13, the first magnetic element 12 is a ferromagnetic material and substantially rectangular shape. The first insulative housing 10 defines a plurality of first terminal slots 101 receiving the first terminal group 2, the inner surface of the first terminal slot 101 facing to a front surface 102 of the first insulative housing 10 is gradually expanded shape. The first magnetic element 12 defines a receiving cavity 120 running through the front surface 121 and the rear surface thereof, the first insulative housing 10 is tightly fixed in the receiving cavity 120 of the first magnetic element 12.
Referring to FIG. 1 and FIG. 6, the first magnetic element 12 is fixed in a receiving space 130 of the insulative shell 13 and the front surface 121 of the first magnetic element 12 is exposed outside of the insulative shell 13 to form a mating surface of the first connector. The front portion of the first magnetic element 12 is projecting forwardly from the front surface of the insultive shell 13, the mating surface is located in front of the front surface of the insultive shell 13 and the front surface 102 of the first insulative housing 10 is flush with the mating surface. In the preferred embodiment, the first terminal group 11 of the first connector 1 defines a first central terminal 111 and two first outer terminals 112, 113 located at both sides of the first central terminal 111, the first central terminal 111 and the first outer terminals 112, 113 are telescopic in the first terminal slots 101 along a front-to-rear direction, and the distance from the first central terminal 111 to the first outer terminals 112 is equal to the distance from the first central terminal 111 to the first outer terminals 113. In a free state, the front end of the first terminal group 11 is substantially flush with the mating surface, and the front end of the first terminal group 11 can be retracted into the inside of the first terminal slots 101 by actuated. The first terminal group 11 defines a plurality of connecting portions in the rear side thereof, the connecting portions are projecting rearwardly outside of the first insulative housing 10 and connecting to the conductive core wires of the cable 3.
Referring to FIG. 4 to FIG. 6, the second connector 2 includes a base 20, a second terminal group 21 fixed in the base 20, a second magnetic element 22 around the second terminal group 21 and a metal shell 23, the second magnetic element 22 is a magnet and substantially rectangular shape. The base 20 defines a base portion 25 and a second insulative housing 24 projecting outside of the bade portion 25, the base portion 25 and the second magnetic element 22 together form a receiving cavity 220 for receiving the second insulative housing 24, the second insulative housing 24 defines a plurality of second terminal slots 242 and a terminals slot 243 for receiving the second terminal group 22. In the preferred embodiment, the second terminal group 21 defines a second central terminal 211, a second outer terminal 212 located at a side of the second central terminal 211 and an elastic terminal 213 located at the other side of the second central terminal 211. The second central terminal 211 and the second outer terminal 212 are non-scalable terminals receiving in the second terminal slots 242 and each defines a contacting portion 2121 projecting outside of the front surface 241 of the second insulative housing 24.
Referring to FIG. 2 to FIG. 6, the base 20 abuts the rear surface of the second magnetic element 22, the second insulative housing 24 is tightly secured in the receiving cavity 220, and the front surface 241 of the second insulative housing 24 and the front surface 221 of the second magnetic element 22 together form a mating surface of the second connector 2. The base portion 25 defines a post 251 projecting into the terminal slot 243. The elastic terminal 213 defines a retaining portion 2131 adjust to the post 251 and fixed to the terminal slot 243, an elastic contacting arm 2132 bending from the retaining portion 2131 and abutting the front surface of the post 25 and a soldering portion 2133 extending outside of the base 20. The metal shell 23 surrounds the outside of the base portion 25 and the second magnetic element 22. The second magnetic element 22 defines two recesses 222 in both sides of the front surface 221 thereof in a vertical direction and the metal shell 23 defines a pair of locking pieces 231 attached to the corresponding recesses 222, the metal shell 23 defines a pair of locking holes 232 in both sides thereof in a longitudinal direction and the base portion 25 defines a pair of locking portions 252 projecting outwardly and clasping the corresponding locking holes 232, thereby the metal shell is fixed.
Referring to FIG. 7 to FIG. 8, when the first connector 1 is engaging with the second connector 2 in a first position, the first magnetic element 12 and the second magnetic element 22 are attached to each other in order to maintain the mating between the first and second connector, the first central terminal 111 is contacting the second central terminal 211, the second outer terminal 212 is contacting the first outer terminal 112 and the elastic terminal 213 is elastically abutting against the first magnetic element 12 of the first connector 1 in order to form electrical transmission. When the first connector 1 is engaging with the second connector 2 by rotating 180 degree to a second position, the first central terminal 111 is contacting the second central terminal 211, the second outer terminal 212 is contacting another first outer terminal 113 and the elastic terminal 213 is elastically abutting against the first magnetic element 12 of the first connector 1 in order to form electrical transmission, which ensures the electrical connector assembly engaged in two directions. Wherein the first central terminal 111 is connecting the second central contact for transmitting a first power supply signal, the second outer terminal 212 is respectively connecting the first outer terminals 112, 113 for transmitting a second power supply signal, and the elastic terminal 213 is elastically abutting the first magnetic element 12 of the first connector for transmission detection signal.
It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the board general meaning of the terms in which the appended claims are expressed.
Patent Grant
9419377
