Patent Grant
8043107
This application claims priority to Chinese Application No. 200920154840.9, filed May 5, 2009, to Chinese Application No. 200920154839.5, filed May 5, 2009, and to Chinese Application No. 200920154841.2, filed May 5, 2009, all of which are incorporated herein by reference in their entirety.
The present invention relates to an electrical connector and, in particular, to a up-and-down stacked type of electrical connector.
U.S. Pat. No. 7,270,570 discloses a stacked connector, which comprises an insulating body, two tongue parts protruding forward from the insulating body, and a partition part for partitioning two tongue parts. A terminal group is provided on one of the two tongue parts respectively, and a metal casing assembled on the insulating body envelope the periphery of the two tongue parts, thus forming an upper connector and a lower connector. However, in this patent, there is no construction for fastening the metal casing of the upper connector and the insulating body, so that the upper connector tends to loose. Besides, there is no sheltering metal casing between two terminal groups for the purpose of shielding, so that cross-talking would easily occur between two terminal groups, which also affect the quality of signal transmission.
Therefore, the inventors think it is potential to improve the above issues, have studied diligently with the use of knowledge, and come up with the present invention which is reasonable in design and can effectively improve the above issues.
The present invention provides an electrical connector, comprising: an insulating support frame with a front side and an opposite back side; first and second metal casings assembled with the support frame and constituting first and second plugging spaces respectively; and first and second terminal groups connected with the support frame. The support frame comprises a first tongue part and a second tongue part which correspond to the direction of the front side. The support frame further comprises a partition part for partitioning the first tongue part from the second tongue part. The first tongue part is located over the partition part and into the first plugging space, the first terminal group is provided on the first tongue part, the second tongue part is located below the partition part and into the second plugging space, and the second terminal group is provided on the second tongue part. The support frame is sheltered with a metal sheltering casing which comprises a front sheltering casing and a back sheltering casing assembled together in the back and front direction. First holding plate bends and extends from the opposite sides of the first metal casing respectively, notch is provided on the opposite sides of the front sheltering casing respectively, and the first holding plates are correspondingly held in the notches of the front sheltering casing. Second holding plate bends and extends from the opposite sides of the second metal casing respectively, recess is provided on the opposite sides of the support body respectively, and the second holding plates are correspondingly held in the recesses of the support frame.
Preferably, at least a first elastic plate and at least a second elastic plate bend and extend from the opposite top and bottom of the front sheltering casing, the first elastic plate tightly presses against the bottom of the first metal casing, and the second elastic plate tightly presses against the top of the second metal casing.
To further understand the features and technical aspects of the present invention, reference is made to the detailed description and the accompanying drawings of the present invention. However, the accompanying drawings are not used for limiting the present invention, but providing reference and description.
A main object of the present invention is to provide an electrical connector which can be secured firmly without tendency of loosing. A further object of the present invention is to provide an electrical connector which can not only be secured firmly, but also reduce the probability of occurring cross-talking.
To achieve the further object mentioned above, the metal sheltering casing is grounded, so that the first and second metal casings are also grounded via the first and second elastic plates. The present invention has the following beneficial effects:
First holding plates on both sides of the first metal casing are correspondingly held in the notches of the front sheltering casing, and second holding plates on both sides of the second metal casing are correspondingly held in the recesses of the support frame, so that the first and second metal casings can be secured firmly to the front sheltering casing and the support frame without tendency of loosing.
By pressing the first and second elastic plates against the first and second metal casings, these two metal casings can be secured more firmly. Furthermore, when the metal sheltering casing is grounded, the first and second metal casings can also be grounded, so that the first and second metal casings can not only provide the effect of preventing EMI, but also reduce the cross-talking between the first and second terminal groups.
As shown in
The support frame 1 has a front side 101 and an opposite back side 102. The support frame 1 comprises a first tongue part 11 and a second tongue part 12 which correspond to the direction of the front side 101, and further comprises a partition part 13 for partitioning the first tongue part 11 from the second tongue part 12. The first tongue part 11 lies above the partition part 13, and the second tongue part 12 lies below the partition part 13. The first tongue part 11 can be recessed to form a plurality of first terminal grooves 14 on the opposite upper and lower tongue surfaces thereof, respectively, and the second tongue part 12 is recessed to form a plurality of second terminal grooves 15 on the lower tongue surface thereof (as shown in
The first terminal group 2a is composed of a plurality of first terminals 20a. Each of the first terminal 20a comprises a first soldering pin 21a and a first contacting part 22a bending and extending from the top of the first soldering pin 21a.
The second terminal group 2b is composed of a plurality of second terminals 20b. Each of the second terminal 20b comprises a second soldering pin 21b and a second contacting part 22b extending from the top of the second soldering pin 21b.
The first terminal group 2a is arranged on the first tongue part 11 of the support frame 1, so that the first contacting part 22a is accommodated into the first terminal grooves 14 correspondingly in the upper and lower tongue surfaces of the first tongue part 11, while the first soldering pin 21a extends out of the back side 102 of the first tongue part 11 and enters into the accommodating chamber 16. However, the arrangement of the first contacting part 22a of the first terminal group 2a is not limited to the described embodiment, and variations are possible. For example, the first contacting part 22a can be arranged in one of the tongue surfaces of the first tongue part 11.
The second terminal group 2b is arranged on the second tongue part 12 of the support frame 1, so that the second contacting part 22b of the second terminal 20b is correspondingly arranged into the second terminal groove 15 of the second tongue part 12, and the second soldering pin 21b extends out of the back side of the second tongue part 12 and enters into the accommodating chamber 16.
The first metal casing 3a and the second metal casing 3b are arranged oppositely on the upper and lower side of the support body 1. The first metal casing 3a constitutes a first plugging space 31a, in which the first tongue part 11 and the first contacting part 22a of the first terminal group 2a are accommodated. The second metal casing 3b constitutes a second plugging space 31b, in which the second tongue part 12 and the second contacting part 22b of the second terminal group 2b are accommodated.
The metal sheltering casing 4 shelters the support body 1 with a front sheltering casing 40 and a back sheltering casing 50 which are assembled together in the back and front direction. According to the present invention, a first holding plate 32a bends and extends from the opposite sides of the first metal casing 3a respectively, notch 401 is recessed on the opposite sides of the front sheltering casing 40 respectively, a second holding plate 32b bends and extends from the opposite sides of the second metal casing 3b respectively, and a recess 17 is provided on the opposite sides of the support frame 1 respectively. The first holding plates 32a on both sides of the first metal casing 3a are correspondingly held in the notches 401 of the front sheltering casing 40 (as shown in
In addition, according to the present invention, at least a first elastic plate 402 and at least a second elastic plate 403 can be provided, which bend and extend from the opposite top and bottom of the front sheltering casing 40. The first elastic plate 402 can elastically and tightly press against the bottom of the first metal casing 3a, the second elastic plate 403 can elastically and tightly press against the top of the second metal casing 3b (as shown in
As described above, the electrical connector according to the present invention is adapted to a circuit board 8. The circuit board 8 is provided with opposite upper and lower board surface 81, 82, and a placing groove 83 penetrating through the upper and lower board surface 81, 82. The circuit board 8 is further provided with a plurality of first and second soldering holes 84, 85 penetrating the upper and lower board surface 81, 82. Here, the second metal casing 3b is correspondingly positioned in the placing groove 83, so that the electrical connector is sunk in the circuit board 8, and the first and second soldering pins 21a, 21b pass through the corresponding first and second soldering holes 84, 85 and are soldered with the circuit board 8 by solders to achieve electrical conduction. By providing the metal sheltering casing 4 between the first terminal group 2a and the second terminal group 2b, it is possible to reduce the cross-talking between the first terminal group 2a and the second terminal group 2b.
Here, fixing members 404 extends downwardly from the bottom of two opposite sides of the metal sheltering casing 4, for connecting with the corresponding fixing part 86 of the circuit board 8. Preferably, the fixing part 86 of the circuit board 8 is electrically grounded, so that the front sheltering casing 40 is also electrically grounded. As a result, when the metal sheltering casing 4 is grounded, by pressing the first elastic plate 402 and the second elastic plate 403 tightly against the first metal casing 3a and the second metal casing 3b, it is possible to not only make the first metal casing 3a and the second metal casing 3b more stable, but also make the first and second metal casing 3a, 3b to be connected with the ground. In this way, in addition to the effect of preventing EMI, the first and second metal casing 3a, 3b can also reduce the cross-talking between the first terminal group 2a and the second terminal group 2b.
As shown in
In the particular embodiments of the present invention, the front sheltering casing 40 comprises a front board portion 41 and two side board portions 42 connected at the opposite sides of the front board portion 41. The front board portion 41 shelters the front wall of the partition part 13, and the side board portions 42 shelter two opposite side walls of the partition part 13. The first and second elastic plate 402, 403 bend and extend from the top and bottom of the front board portion 41, the notches 401 are provided on the top of two side board portions 42, and the snap part 405 described above is provided on the back end of two side board portions 42. The snap part 405 can be an elastic sheet which is formed by punching the side board portion 42, although it is not limited to this. In addition, the fixing member 404 extends downwardly from the bottom of two opposite sides of the front sheltering casing 40 and, in particular, from the bottom of the side board portion 42. The fixing member 404 may be a snap member, and the fixing part 86 of the circuit board 8 may be a grounding hole which matches with the snap member and allows the snap member to pass through, although it is not limited to this. The fixing member may also be a bending sheet which extends downwardly, and the fixing part may be a matching pad. Besides, two side board portions 42 of the front sheltering casing 40 can also shelter the opposite sides of the first metal casing 3a, so as to shelter the first metal casing 3a to improve its stability and prevent loosing.
Furthermore, the electrical connector according to the present invention can further comprise a terminal positioning member 6, which is provided with a plurality of terminal positioning holes 61. The terminal positioning member 6 is clamped into the accommodating chamber 16 at the back side 102 of the support frame 1, and the first and second soldering pins 21a, 21b of the first and second terminal groups 2a, 2b are plugged into the corresponding terminal positioning holes 61, with ends thereof extending out of the terminal positioning holes 61 to be soldered with the circuit board 8. As shown in
In addition, the electrical connector can further comprise a terminal holding base 7, which is provided with a plurality of positioning recesses 71. The terminal holding base 7 is fixed into the accommodating chamber 16 at the back side 102 of the support frame 1, and are held over the terminal positioning member 6, while the ends of the first contacting parts 22a of the first terminal group 2a near the first soldering pins 21a are located into the corresponding positioning recesses 71, so as to position the first terminal group 2a.
As described above, according to the present invention, the first holding plates 32a on both sides of the first metal casing 3a are fastened into the corresponding notches 401 of the front sheltering casing 40, and the second holding plates 32b on both sides of the second metal casing 3b are fastened into the corresponding recesses 17 of the support frame 1, so that the first and second metal casing 3a, 3b can be secured firmly to the front sheltering casing 40 and the support frame 1 without tendency of loosing.
Moreover, by pressing the first and second elastic plates 402, 403 of the metal sheltering casing 4 against the first and second metal casing 3a, 3b, the first and second metal casing 3a, 3b can be secured more firmly. In addition, once the metal sheltering casing 4 is grounded, the first and second metal casing 3a, 3b are also grounded. In this case, the two metal casing can not only provide the effect of preventing EMI, but also reduce the cross-talking between the first and second terminal groups 2a, 2b.
The embodiments described above are only preferred embodiments according to the invention, and not intend to limit the protection scope of the present invention. It should be noted that all equivalent structural variations according to the description and drawings of the present invention fall within the protection scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2009 2 0154839 U | May 2009 | CN | national |
| 2009 2 0154840 U | May 2009 | CN | national |
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| Number | Date | Country | |
|---|---|---|---|
| 20100285694 A1 | Nov 2010 | US |
