Patent Publication Number: US-2012040555-A1

Title: Electric connector

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an electric connector, and more particularly to an electric connector including a socket member or receptacle having an increased contacting area with the in-plug electric wire or cable for firmly and stably coupling or connecting the in-plug electric wire or cable to the receptacle of the electric connector and for decreasing the impedance between the in-plug electric wire or cable and the receptacle of the electric connector and for reducing the return loss of the electric connector. 
     2. Description of the Prior Art 
     Typical electric connectors comprise one or more socket members for receiving or engaging with the in-plug electric wires or cables and for electrically coupling or connecting the in-plug electric wire or cable to the socket member. 
     For example, U.S. Pat. No. 4,206,963 to English et al. discloses one of the typical connector filtered adapter assemblies comprising a receptacle disposed in a shell for receiving or engaging with the in-plug electric wires or cables. 
     However, the receptacle includes a tilted or inclined or tapered structure that may be engaged with the in-plug electric wires or cables in a point or line contact, i.e., the in-plug electric wires or cables are only in line contact with the receptacle such that the contacting area between the in-plug electric wire or cable and the receptacle is small and such that the electric contact between the in-plug electric wire or cable and the receptacle will become fail. 
     U.S. Pat. No. 5,704,809 to Davis discloses another typical coaxial electrical connector comprising a receptacle contact disposed in an outer shell for receiving or engaging with the in-plug electric wires or cables. 
     However, the receptacle contact includes a tilted or inclined or tapered structure that may be engaged with the in-plug electric wires or cables in a point or line contact, i.e., the in-plug electric wires or cables are only in line contact with the receptacle contact such that the contacting area between the in-plug electric wire or cable and the receptacle contact is small and such that the electric contact between the in-plug electric wire or cable and the receptacle contact will become fail. 
     U.S. Pat. No. 6,709,289 to Huber et al. discloses a further typical electrical plug connector comprising an inner conductor part disposed in an outer shell for receiving or engaging with the in-plug electric wires or cables. 
     However, the inner conductor part includes a tilted or inclined or tapered structure that may be engaged with the in-plug electric wires or cables in a point or line contact, i.e., the in-plug electric wires or cables are only in line contact with the inner conductor part such that the contacting area between the in-plug electric wire or cable and the inner conductor part is small and such that the electric contact between the in-plug electric wire or cable and the inner conductor part will become fail. 
     The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional electric connectors. 
     SUMMARY OF THE INVENTION 
     The primary objective of the present invention is to provide an electric connector including a socket member or receptacle having an increased contacting area with the in-plug electric wire or cable for firmly and stably coupling or connecting the in-plug electric wire or cable to the receptacle of the electric connector and for decreasing the impedance between the in-plug electric wire or cable and the receptacle of the electric connector and for reducing the return loss of the electric connector. 
     In accordance with one aspect of the invention, there is provided an electric connector comprising an adaptor shell including a chamber formed therein, an insulating device disposed into the chamber of the adaptor shell and including a bore formed therein, and a receptacle engaged into the bore of the insulating device and including a compartment formed therein for receiving an electric cable, and including at least one slot formed therein for defining at least one blade, the blade including two side segments and an intermediate segment disposed between the side segments and located in the compartment of the receptacle for engaging with the electric cable and for increasing a contacting area between the blade and the electric cable and for firmly and stably coupling or connecting the in-plug electric wire or cable to the receptacle of the electric connector and for decreasing the impedance between the in-plug electric wire or cable and the receptacle of the electric connector and for reducing the return loss of the electric connector. 
     The insulating device includes a first insulating member disposed in the chamber and at a first end of the adaptor shell and having a bore formed in the first insulating member, and includes a second insulating member disposed in the chamber and at a second end of the adaptor shell and includes a bore formed in the second insulating member. 
     The receptacle is engaged into the bore of the first insulating member, and partially engaged into the bore of the second insulating member. 
     The adaptor shell includes an inner peripheral flange extended radially and inwardly from the first end of the adaptor shell for engaging with the first insulating member. 
     The receptacle includes a conductor member engaged with the receptacle and extended out of the second insulating member and the adaptor shell. 
     Further objectives and advantages of the present invention will become apparent from a careful reading of the detailed description provided hereinbelow, with appropriate reference to the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded view of an electric connector in accordance with the present invention; 
         FIG. 2  is a partial and longitudinal cross sectional view of the electric connector; 
         FIG. 3  is a partial and longitudinal cross sectional view similar to  FIG. 2 , illustrating the operation of the electric connector; 
         FIG. 4  is a partial and lateral cross sectional view of the electric connector; and 
         FIG. 5  is a plan schematic view illustrating the curvature of the return loss of the electric connector. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to the drawings, and initially to  FIGS. 1-2 , an electric connector in accordance with the present invention comprises an outer adaptor shell  10  including a bore or chamber  11  formed therein, an insulating device  2  including a first insulating member  20  disposed or engaged into the chamber  11  and at one end  12  of the adaptor shell  10  and having an orifice or bore  21  formed in the first insulating member  20 , and including a second insulating member  23  also disposed or engaged into the chamber  11  but at the other end  13  of the adaptor shell  10  and including an aperture or bore  24  formed in the second insulating member  23 . 
     It is preferable, but not necessarily that the adaptor shell  10  includes an inner peripheral flange  14  extended radially and inwardly from the one end  12  thereof for engaging with the first insulating member  20  and for stably or solidly anchoring or positioning or retaining or confining the first insulating member  20  in the one end  12  of the adaptor shell  10  and for preventing the first insulating member  20  and the second insulating member  23  from moving axially along or relative to the adaptor shell  10 . 
     A tubular or cylindrical socket member or receptacle  30  is disposed or engaged into the bore  21  of the first insulating member  20  or of the insulating device  2  and partially engaged into the bore  24  of the second insulating member  23  ( FIGS. 2 ,  3 ), and includes a bore or compartment  31  formed therein, and includes one or more (such as three) slots  32  formed therein for forming or defining one or more (such as three) spring or resilient blades  33 , each blade  33  includes two side tilted or inclined or tapered segments  34 ,  35  partially extended into the compartment  31  of the receptacle  30  ( FIGS. 2-4 ), and an intermediate segment  36  disposed or located or coupled between the tapered segments  34 ,  35  and located in the compartment  31  of the receptacle  30  for firmly and stably or suitably engaging with the in-plug electric wire or cable  40  and for suitably increasing the contacting area between the blades  33  and the in-plug electric wire or cable  40  and for allowing the in-plug electric wire or cable  40  to be suitably engaged into the compartment  31  of the receptacle  30 . 
     In operation, as shown in  FIG. 3 , the in-plug electric wire or cable  40  may be engaged into the bore  21  of the first insulating member  20  and suitably engaged into the compartment  31  of the receptacle  30  for suitably engaging with the spring or resilient blades  33 , and particularly for suitably engaging with the intermediate segments  36  of the blades  33  and thus for suitably increasing the contacting area between the blades  33  and the in-plug electric wire or cable  40  ( FIGS. 3-4 ) and for decreasing the impedance between the in-plug electric wire or cable  40  and the receptacle  30  of the electric connector and for reducing the return loss of the electric connector. A conductor member  37  may further be provided and engaged with or coupled to the receptacle  30  and extended out of the second insulating member  23  and/or the adaptor shell  10 . 
     As shown in  FIG. 5 , when the in-plug electric wire or cable  40  includes an impedance of about 75 ohms, and when the electric connector is operated in the frequency of about 3 GHz, the gain of the return loss is less then −18 dB, such that the return loss of the electric connector may be suitably reduced or decreased. 
     Accordingly, the electric connector in accordance with the present invention includes a socket member or receptacle having an increased contacting area with the in-plug electric wire or cable for firmly and stably coupling or connecting the in-plug electric wire or cable to the receptacle of the electric connector and for decreasing the impedance between the in-plug electric wire or cable and the receptacle of the electric connector and for reducing the return loss of the electric connector. 
     Although this invention has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made by way of example only and that numerous changes in the detailed construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.