Patent Publication Number: US-2005142952-A1

Title: Printed circuit board jack

Description:
FIELD OF THE INVENTION  
      This invention mainly relates to a network jack for eliminating the electromagnetic interference therein. And more particularly to a Printed Circuit Board jack (PCB jack) for eliminating the electromagnetic interference therein.  
     BACKGROUND OF THE INVENTION  
      Generally, a network plug for a communication system is usually connected to a metal wire holder and the metal wire holder could be located inside a PCB jack or could be mounted on a panel. Please refer to  FIGS. 1-3 , which are diagrams respectively showing the configurations of a panel, a PCB jack and a metal wire holder according to the prior art. As shown in  FIG. 1 , six PCB jacks  10  are placed on the Panel  11 , and the metal wire holder  12  inside the PCB jack  10  can be replaced as a metal wire holder  20  showed in  FIG. 2 . Both metal wire holders  12  and  20  could be used for being connected with the network plug (not shown). The metal wire holder  20  has eight pins  21  thereon, and the eight pins  21  will further form four wire sets  31 ,  32 ,  33  and  34  showed in  FIG. 3 . As shown in  FIG. 3 , since the first wire set  31  and the second wire set  32  are adjacent to each other, the distance therebetween is not enough to eliminate the electromagnetically induced phases generated while signals are transmitted therethrough. Therefore, the cross talk phenomenon would occur therein unavoidably and further interfere the signal transmission.  
      Based on the above, in order to overcome the drawbacks in the prior art, an improved PCB jack are provided in the present invention for eliminating the cross talk generated from the transmission of the first and second signals and also for assuring the stability and reliability of the signal transmission.  
     SUMMARY OF THE INVENTION  
      In one respect of the present invention, a PCB jack for eliminating an electromagnetic interference formed therein is provided. The PCB jack includes a jack body for being connected to a plug, a first wire configured inside the jack body and having a first portion for transmitting a first signal, a second wire configured inside the jack body and having a second portion for transmitting a second signal, a first conducting piece connected to the first portion of the first wire and a second conducting piece connected to the second portion of the second wire, wherein the electromagnetic interference formed between the first wire and the second wire is eliminated.  
      Preferably, the first wire has a first engaging endpoint for being electrically connected to a blue wire of the plug, and the first conducting piece is an L-shaped copper sheet having a first capacitor area and a first connecting area.  
      Preferably, the first connecting area of the first conducting piece has a first connecting surface for being connected to the first portion of the first wire, and the first capacitor area has a first extending surface for eliminating the electromagnetic interference.  
      Preferably, the second wire has a second engaging endpoint for being electrically connected to a green wire of the plug, and the second conducting piece is an L-shaped copper sheet having a second capacitor area and a second connecting area.  
      Preferably, the second connecting area of the second conducting piece has a second connecting surface for being connected to the second portion of the second wire, and the second capacitor area has a second extending surface for eliminating the electromagnetic interference.  
      Preferably, the PCB jack further includes a third and a fourth wires for being connected to an orange and a brown wires of the plug for transmitting a third and a fourth signals respectively.  
      In another aspect of the present invention, a PCB jack is provided. The PCB jack includes a jack body for being connected to a plug, a first wire configured inside the jack body for transmitting a first signal, and a first conducting piece connected to the first wire for eliminating a first cross-talk generated upon transmitting the first signal.  
      Preferably, the PCB jack is used for eliminating an electromagnetic interference formed therein, wherein the first wire has a first portion. The PCB jack includes a second wire configured inside the jack body, wherein the second wire has a second portion for transmitting a second signal, and further includes a second conducting piece connected to the second portion of the second wire for eliminating a second cross talk generated upon transmitting the second signal.  
      Preferably, the first wire has a first engaging endpoint for being electrically connected to a blue wire of the plug, and the first conducting piece is an L-shaped copper sheet having a first capacitor area and a first connecting area.  
      Preferably, the first connecting area of the first conducting piece has a first connecting surface for being connected to the first portion of the first wire, and the first capacitor area has a first extending surface for eliminating the first cross talk.  
      Preferably, the second wire has a second engaging endpoint for being electrically connected to a green wire of the plug, and the second conducting piece is an L-shaped copper sheet having a second capacitor area and a second connecting area.  
      Preferably, the second connecting area of the second conducting piece has a second connecting surface for being connected to the second portion of the second wire, and the second capacitor area has a second extending surface for eliminating the second cross talk.  
      Preferably, the PCB jack further includes a third and a fourth wires for being connected to an orange and a brown wires of the plug for transmitting a third and a fourth signals respectively.  
      In another aspect of the present invention, a PCB jack is provided. The PCB jack includes a first wire having a first portion for transmitting a first signal, a second wire having a second portion for transmitting a second signal, a first conducting piece connected to the first portion of the first wire for eliminating a first cross-talk generated upon transmitting the first signal, and a second conducting piece connected to the second portion of the second wire for eliminating a second cross talk generated upon transmitting the second signal.  
      Preferably, the PCB jack is used for eliminating an electromagnetic interference formed therein, and further includes a jack body for being connected to a plug, wherein the first wire and the second wire are configured inside the jack body.  
      Preferably, the first wire has a first engaging endpoint for being electrically connected to a blue wire of the plug, and the first conducting piece is an L-shaped copper sheet having a first capacitor area and a first connecting area.  
      Preferably, the first connecting area of the first conducting piece has a first connecting surface for being connected to the first portion of the first wire, and the first capacitor area has a first extending surface for eliminating the first cross talk.  
      Preferably, the jack body has a first and a second slots for respectively containing therein the first connecting area of the first conducting piece and the second connecting area of the second conducting piece.  
      Preferably, the jack body has a first and a second props for propping the first and the second conducting piece.  
      Preferably, the first and the second wires are configured inside a holder, wherein the holder has a protruding tenon for engaging a third slot of the jack body.  
      The above objects and advantages of the present invention will become more readily apparent to those ordinarily skilled in the art after reviewing the following detailed descriptions and accompanying drawings, in which: 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  is a front view illustrating a panel and a PCB jack thereon according to the prior art;  
       FIG. 2  is a stereo perspective view illustrating a metal wire holder for a PCB jack according to the prior art;  
       FIG. 3  is a stereo perspective view illustrating a PCB jack according to the prior art  
       FIG. 4  is a stereo perspective view illustrating a plug for a PCB jack according to a first preferred embodiment of the present invention;  
       FIG. 5  is an exploded view showing the PCB jack according to the first preferred embodiment of the present invention;  
       FIG. 6  is stereo perspective view showing the first wires and the second wires of  FIG. 5  in detail;  
       FIG. 7  is a stereo perspective view showing the configuration of  FIG. 5 ;  
       FIG. 8  is a stereo perspective view showing a printed wire board having the PCB jack of  FIG. 5  configured theron;  
       FIG. 9  is a stereo perspective view showing the PCB jack, the first conducting piece and the second conducting piece of  FIG. 7  in greater detail; and  
       FIG. 10 a  stereo perspective view showing the PCB jack of  FIG. 7  with the metal wire holder. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
      The present invention will now be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only; it is not intended to be exhaustive or to be limited to the precise form disclosed.  
      Please refer to  FIGS. 4-6  for all the description below. As shown in  FIG. 5 , the PCB jack  50  according to the first preferred embodiment of the present invention is designed to eliminate the electromagnetic interference generated therein. the PCB jack  50  includes the body  501 , first wires  51  settled therein to deliver the first signal, second wires  52  settled therein to deliver the second signal, the first conducting piece  511  and the second conducting piece  522 . The first wire  51  and the second wire  52  are illustrated in greater detail in  FIG. 6 . As shown in  FIG. 6 , the first conducting piece  511  contacted to the wider portion  61  of the upper first wire  51  is used to avoid the generation of a cross take while the first signals are transmitted. Similarly, the wider portion  62  of the lower second wire  52  is connected to the second conducting piece  522 , which is used for eliminating the cross talk while the second signals are transmitted.  
      The endpoints  611  on each of the first wires  51  of the PCB jack  50  are connected to the blue wires  41  (as shown in  FIG. 4 ) of the network plug respectively. The first conducting piece  511 , which is an L-shaped copper sheet, is composed of the capacitor area  531  and the connecting area  541 . The wider portion  61  of the upper first wire  51  is designed to connect to this connecting area  541  of the conducting piece  531 . Moreover, the extension portion  561  of the capacitor  531  is set up to eliminate the cross talk generated by transmitting of the first signals. Also, the cross talk generated by transmitting of the second signals could be accordingly eliminated thereby. The endpoints  621  on each of the second wires  52  of the PCB jack  50  are connected to the green wires  42  (as shown in  FIG. 4 ) of the network plug respectively. The second conducting piece  522 , which is an L-shaped copper sheet, is composed of the second capacitor area  532  and the connecting area  542 . Moreover, the second connecting area  542  of the second conducting piece  522  is connected to the wider portion  62  of the lower second wires  52 , as that the second cross talk is suppressed by the extension portion  562  of the second capacitor area  532 .  
      Furthermore, the PCB jack  50  includes the third wires  53  and fourth wires  54 , wherein the third wires  53  and the fourth wires  54  are respectively connected to the orange wires  43  and brown wires  44  of the network plug shown in  FIG. 4  for transmitting the third signals and the fourth signals.  
      Please refer to  FIG. 7  and  FIG. 8  for illustrating the PCB jack according to the first preferred embodiment of the present invention and a printed circuit board therewith. The PCB jack  50  showed in  FIG. 7  is formed by all the components described above. The PCB jack  50  shown in  FIG. 7  further has two tenons  70  for being connected to the printed circuit board  80 .  
      Please refer to  FIG. 5  and  FIG. 9  for illustrating the engagement of the conducing pieces and the PCB jack according to the first preferred embodiment of the present invention. The body of the PCB jack  50  further includes the first slot  571  for the first connecting piece  511  being placed therein, and the second slot  572  for the second conducting area  542  and second connecting piece  522 . The PCB jack  50  showed in  FIG. 9  is formed by all the components described above. Furthermore, the PCB jack  50  also includes the first prop  91  and second prop  92  for propping the first conducting piece  511  and the second conducting piece  522 .  
      Please refer to  FIG. 10  for illustrating the engagement among the wires, the wire holder and the PCB jack according to the first preferred embodiment of the present invention. The PCB jack  50  showed in  FIG. 10  is formed by all the components described above. The first wires  51  and the second wires  52  are located inside the metal wire holder  100 . The metal wire holder  100  has one tenon  101  thereon for being connected with the slot  102  of the jack body  501 .  
      The second preferred embodiment according to the present invention would be described as follows. In which, for simplifying the descriptions, the drawings for the second embodiment are omitted herein.  FIGS. 4-6  are still applied for illustrating the second preferred embodiment.  
      The PCB jack  50  according to the second preferred embodiment includes the following portions. The jack body  501  is for the network plug  40  to be plugged in. The first wires  51  are set up inside the jack body  501  for delivering the first signal, wherein each of the first wires  51  include the wider portion  61 . The first conducting piece  511  is connected to the wider portion  61  of the first wire  51  for eliminating the cross talk of the first signal. The second wires  52  are set up inside the jack body  501  for delivering the second signal, wherein each of the first wires  52  include the wider portion  62 . The second conducting piece  522  is connected to the wider portion  62  of the second wire  52  for eliminating the cross talk of the second signal. The other detailed components included in the PCB jack  50  of the second preferred embodiment are the same as that in the PCB jack  50  of the first preferred embodiment. The only difference therebetween is that the second conducting piece  522  is not necessary in the second one, such as the condition of using only one single PCB jack.  
      The third preferred embodiment according to the present invention would be described as follows. In which, for simplifying the descriptions, the drawings for the third embodiment are omitted herein.  FIGS. 5-6  are still applied illustrating the third preferred embodiment.  
      The PCB jack  50  according to the third preferred embodiment includes the following portions. The first wires  51  with the wider portion  61  of the PCB jack  50  is used for delivering the first signal. The first conducting piece  511  of the PCB jack  50  is connected to the wider portion  61  of the first wires  51  for eliminate the cross talk of the first signals. The second wires  52  with the wider portion  62  of the PCB jack  50  is used for delivering the second signals. The second conducting piece  522  of the PCB jack  50  is connected to the wider portion  62  of the second wires  52  for eliminating the cross talk of the second signals. The other detailed components included in the PCB jack  50  of the third preferred embodiment are the same as that in the PCB jack  50  of the first preferred embodiment. The only difference therebetween is that the PCB jack  50  is not necessary include a jack body. That is to say, the components of the PCB jack  50  are not limited to be included inside a jack body.  
      To sum up the above, two improved conducting pieces, which are connected separately to the first wires and the second wires are provided by the present invention. The cross talk generated by the signal transmission from these two signals of the two wires are efficiently eliminated thereby. Hence, the present invention not only has the novelty and progressiveness, but also has an industry utility  
      While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention needs not be limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.