Abstract:
The present invention provides an audio signal adaptor comprising a space for receiving an optical conversion module. The optical conversion element of the optical conversion module facing the adaptor of the audio signal adaptor allows the circular type  1  plug to fit into the adaptor to form an optical conversion loop with the optical conversion element.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. The Field of the Invention  
         [0002]     The present invention relates to an audio signal adaptor having an optical conversion function, and more particularly, relates to an audio signal adaptor comprising a space to receive an optical conversion module to achieve both telephony signal and optical signal transmission functionalities.  
         [0003]     2. Description of the Related Art  
         [0004]     In recent years, the adaptor that controls the sound signal in the multimedia system can only receive the audio plug for telephony signal transmission, and when processing the signal transmission by such audio plug, the electromagnetic interference can cause the distortion of signal. Accordingly, some manufacturers proposed to use optical fiber for processing signal transmission. The optical fiber is composed of fiberglass material, capable of transmitting optical signals. A thin fiberglass is capable of replacing a thick conventional cable, and the fiberglass has the advantages of high transmission efficiency and minimum distortion (due to non-existence of electromagnetic interference). Therefore, the fiberglass has taken a very important position in signal transmission technology. The appearance and size of the above audio plug and the circular type  1  plug are same, but the manufacturers usually classify these separately as independent set, thus the space occupation for these element on the circuit board will be correspondingly large, and the assembly work is also correspondingly. Furthermore, to suit the latest trend for electronic products being lighter, thinner and smaller to attract consumers, the circuit board within the electronic product has to be modified into smaller size to meet such requirements. Further rapid advances in technology have led to development of additional features in the electronic products.  
         [0005]     Accordingly, as can be seen, in the conventional art, separating the audio plug from the optical fiber plug cannot possibly meet the latest need and trends.  
       SUMMARY OF THE INVENTION  
       [0006]     Accordingly, in the view of the foregoing, the present inventor makes a detailed study of related art to evaluate and consider, and uses years of accumulated experience in this field, and through several experiments, to create a new audio signal adaptor. The present invention provides an innovated cost effective audio signal adaptor.  
         [0007]     The present invention provides an audio signal adaptor comprising a space for receiving an optical conversion module. The optical conversion element of the optical conversion module facing the adaptor of the audio signal adaptor allows the circular type  1  plug to fit into the adaptor to form an optical conversion loop with the optical conversion element. 
     
    
     BRIEF DESCRIPTION OF THE DRAWING  
       [0008]     For a more complete understanding of the present invention, reference will now be made to the following detailed description of preferred embodiments taken in conjunction with the accompanying drawings, in which:  
         [0009]      FIG. 1  is a perspective view of a an audio signal adaptor of the present invention;  
         [0010]      FIG. 2  is an exploded view of the audio signal adaptor of the present invention;  
         [0011]      FIG. 3  is a perspective view of an optical conversion module of the present invention;  
         [0012]      FIG. 4  is an exploded view of the optical conversion module of the present invention;  
         [0013]      FIG. 5  is a sectional side view showing before assembling of the audio signal adaptor of the present invention;  
         [0014]      FIG. 6  is a sectional side view showing while assembling the audio signal adaptor of the present invention;  
         [0015]      FIG. 7  is a sectional side view showing after assembling of the audio signal adaptor of the present invention;  
         [0016]      FIG. 8  is a sectional side view showing the audio signal adaptor according to one preferred embodiment of the present invention; and  
         [0017]      FIG. 9  is a sectional side view showing the audio signal adaptor according to another preferred embodiment of the present invention. 
     
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS  
       [0018]     Reference will be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.  
         [0019]     Referring to  FIGS. 1, 2 ,  3  and  4 , respectively show the perspective view and exploded view of the audio signal adaptor of the present invention, and the perspective view and exploded view of the optical conversion module of the present invention. As shown in the figures, the audio signal adaptor  1  of the present invention comprises a connector  2  and an optical conversion module  3 .  
         [0020]     The audio signal adaptor  1  comprises a plurality of adaptors  11  on one side, and a corresponding space  12  is disposed on another side apart from the adaptor  11 . A telephony signal terminal  13  is disposed within the space  12 . Furthermore, the audio signal adaptor  1  comprises a buckle  14  on a bottom surface.  
         [0021]     The connector  2  comprises a button  21 , and a base  22  is formed on a side surface of the button  21  for penetrating and fitting a plurality of optical signal terminals  23 . The button  21  of the connector  2  further comprises a plurality of groove  211 . And the above optical signal terminals  23  has a bent supporting portion  231  formed on one side thereof. Additionally, on the two sides of frontal flange of the button  21  of the connector  2  are extended formed with a buckling portion  212 .  
         [0022]     The optical conversion module  3  comprises a base  31 , which comprises a positioning hole  311 , and on the other side apart from the positioning hole  311  has a space  312  with protruded buckles  3121  formed on two sidewalls. An optical conversion element  32  is positioned in the space  312 . Furthermore, the protruded buckles  3121  formed within the space  312  of the base  31  can support the surface of the optical conversion element  32  for positioning, as shown in  FIG. 4 . The optical conversion element  32  comprises a side extended with a plurality of signal terminals  321  having bent contact portion  3211  at a distal end of each signal terminals.  
         [0023]     Further, referring to  FIGS. 5, 6  and  7 , respectively show the sectional side view before assembling, the sectional side view while assembling and the sectional side view after assembling the audio signal adaptor of the present invention. To assemble the audio signal adaptor  1  of the present invention, the telephony signal terminals  13  of the audio signal adaptor  1  is fitted into the plurality of grooves  211  formed at the button  21  of the connector  2 , and the buckle  14  extending at the button flange of the audio signal adaptor  1  is resiliently buckled into the buckling portion  212  formed at the frontal flange of button  21  of the connector  2 . Next, the base  31  of the optical conversion module  3  is inlayed into the space  12  of the audio signal adaptor  1 . Meanwhile, the positioning hole  311  formed at the base  31  of the optical conversion module  3  is positioned facing the adaptor  11  of the audio signal adaptor  1 . Correspondingly, the supporting portion  231  of the optical signal terminal  23  will have the electrical connection with the contact portion  3211  of the signal terminal  321 . Furthermore, when the above assembly is completed, a case  4  fitted to cover the audio signal adaptor  1  for isolating the electromagnetic signal from the external signals.  
         [0024]     Now referring to  FIGS. 8 and 9 , respectively show the audio signal adaptor according to one preferred embodiment, and according to another embodiment of the present invention. After the assembly of the audio signal adaptor  1  of the present invention, an adaptor  11  of the audio signal adaptor  1  is fitted into the circular type  1  plug  5 , and the terminal of the circular type  1  plug  5  can be inlayed into the positioning hole  311  of the base  31  of the optical conversion module  3  to face the optical conversion element  32  for forming an optical conversion loop. The optical signal terminal  23  of the connector  2  is used for optical signal transmission. Furthermore, when the user inserts the audio plug  6 , the telephony signal terminal  13  of the audio signal adaptor  1  can have the electrical contact with the audio plug  6  to enable the audio signal adaptor  1  to have the telephony signal transmission by the signal terminal  13 .  
         [0025]     While the invention has been described in conjunction with a specific best mode, it is to be understood that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations in which fall within the spirit and scope of the included claims. All matters set forth herein or shown in the accompanying drawings are to be interpreted in an illustrative and non-limiting sense.