Patent Publication Number: US-6213815-B1

Title: Multimedia electric adapter

Description:
BACKGROUND AND SUMMARY OF THE INVENTION 
     The present invention relates to an electric adapter, and more specifically to a multimedia electric adapter, which comprises a RJ45 connector at a front side for connection to a module jack in a wall plate, two audio signal connector and one video signal connector at a rear side for receiving the audio cables and video cable of a monitor for audio and video signal transmission. 
     In the wall  9  of a room or office of a modern building, there is generally provided a wall plate  8  having multiple module jacks  81  for signal transmission. These module jacks  81  can not be used to receive the audio cables and video cable of a monitor for multimedia audio/video signal transmission, for example, video conference, video mail, monitoring and security, remote teaching, etc. 
     The present invention has been accomplished to provide a multimedia electric adapter, which connects the audio and video cables of a monitor to a module jack in a wall plate for multimedia signal transmission. According to the present invention, a multimedia electric adapter comprises a RJ45 connector connected to the circuit board and extended out of the casing at a front side for insertion into a module jack in a wall plate, two audio signal connectors and a video signal connector respectively connected to the circuit board and extended out of a respective hole on the casing at a rear side for receiving the audio cables and video cable of a monitor for audio and video signal transmission. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 illustrates a regular wall plate with module jacks installed in the wall. 
     FIG. 2 is an exploded view of a multimedia electric adapter according to the present invention. 
     FIG. 3 is an elevational assembly view of the multimedia electric adapter according to the present invention. 
     FIG. 4 is an applied view of the present invention, showing the module plug of the RJ45 connector installed in a module jack in a wall plate. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to FIGS. 2 and 3, a multimedia electric adapter in accordance with the present invention is generally comprised of a casing  1 , a circuit board  2 , a RJ45 connector  3 , two audio signal connectors  4 , and a video signal connector  5 . 
     The casing  1  holds the circuit board  2  on the inside, comprising a cable hole  11  on the front sidewall thereof, and three locating holes  12 ,  13  and  14  on the vertical rear sidewall thereof. The circuit board  2  is fixedly fastened to the inside of the casing  1  by fastening elements, for example, screws  61  and  62 , having plurality of electrically conductive contact holes  21  near the front side thereof to which conductors  311  of the signal line  31  of the RJ45 connector  3 , and a plurality of electrically conductive contact holes  22 ,  23  and  24  near the rear side thereof to which the audio signal connectors  4  and the video signal connector  5  are fastened respectively. The RJ45 connector  3  comprises a module plug  32  for insertion into the insertion hole  7111  on a module jack  711  in a wall plate  71  in the wall  7 , a signal line  31  inserted through the cable hole  11  into the inside of the casing  1 , enabling the conductors  311  of the signal line  31  to be respectively welded to the electrically conductive contact holes  21  on the circuit board  2 , and a stopper  312  fixedly mounted around the signal line  31  and fastened to the periphery of the cable hole  11  on the casing  1  to secure the RJ45 connector  3  to the casing  1 . The signal line  31  can be made having the desired length. The audio signal connectors  4  are respectively welded to the electrically conductive contact holes  22 ,  23  on the circuit board  2 , having a receiving side  41  extended out of the locating hole  12  or  13  on the vertical rear sidewall of the casing  1 . 
     Referring to FIG. 4, when in use, the module plug  32  of the RJ45 connector  3  is inserted into the insertion hole  7111  on a module jack  711  in a wall plate  71  in the wall  7 , the receiving sides  41  of the audio signal connectors  4  and the receiving side  51  of the video signal connector  5  are respectively connected to the audio cables and video cable of a monitor (not shown) for multimedia audio/video signal transmission, for example, video conference, video mail, monitoring and security, remote taching, etc. 
     Referring to FIGS. 2 and 3 again, the casing  1  is comprised of two symmetrical shells, namely, the top cover shell  101  and the bottom cover shell  102  fastened together. The top cover shell  101  comprises two hook holes  1011  respectively disposed on two opposite vertical lateral sidewalls thereof. The bottom cover shell  102  comprises two upright hooks  1021  respectively upwardly extended from two opposite vertical lateral sidewalls thereof and hooked in the hook holes  1011  on the top cover shell  101 . The cover shells  101  and  102  each have a front notch  1012  or  1022 , and a plurality of rear notches  1013 ,  1014  and  1015 ; or  1023 ,  1024  and  1025 . When the cover shells  101  and  102  are fastened together, the front notches  1012  and  1022  form the aforesaid cable hole  11 , and the rear notches  1013 ,  1014  and  1015 ; and  1023 ,  1024  and  1025  form the aforesaid locating holes  12 ,  13  and  14  respectively. Further, the bottom cover shell  102  comprises a plurality of supports  1016  to which the circuit board  2  is secured by the screws  61  and  62 . 
     As indicated above, the present invention provides an electric adapter for connecting the audio and video cables of a monitor to a module jack in a wall plate for multimedia signal transmission. While only one embodiment of the present invention has been shown and described, it will be understood that various modification and changes could be made there unto without departing from the spirit and scope of the invention disclosed.