Patent Publication Number: US-8123558-B2

Title: Miniaturized electrical connector having high signal transmission rate

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an electrical connector, and more particularly to an electrical connector having high signal transmission rate. 
     2. The Related Art 
     With the development of electronic technology, electronic products need to be increasingly miniaturized and have high signal transmission rate. Conventionally, in order to have a high signal transmission rate, two or more traditional electrical connectors are pieced together. However, the pieced electrical connector often occupies a relatively large space so that cannot meet the requirement of miniaturization. Furthermore, the process of piecing together the traditional electrical connectors often need to take a great deal of manpower and material resources so that results in too high manufacture cost and lower productivity. 
     SUMMARY OF THE INVENTION 
     It is an object of the present invention to provide an electrical connector. The electrical connector includes a first insulating body having a base board and a first tongue board extending rearward from a bottom of the base board, a plurality of first terminals disposed in the first insulating body respectively and spaced from one another along a transverse direction of the first insulating body, a second insulating body assembled to the first insulating body, and a plurality of second terminals disposed in the second insulating body respectively and spaced from one another along a transverse direction of the second insulating body. Two opposite sides of the first tongue board protrude upward to form a pair of clipping walls defining a receiving space therebetween for receiving the second insulating body therein. Each of the first terminals has a first contact portion disposed in the base board and projecting beyond a top surface of the base board. The second insulating body has a base portion clipped between the clipping walls, and a second tongue board extending forward from a bottom of the base portion. A front end of the second tongue board abuts against a rear end of the base board. Each of the second terminals has a second contact portion stretching out of a front of the base portion to be disposed in the second tongue board and projecting beyond a top of the second tongue board. 
     As described above, in the process of assembling the electrical connector of the present invention, the second insulating body can be easily assembled to the first insulating body so that economizes a great deal of manpower and material resources, reduces manufacture cost of the electrical connector, and further increases productivity of the electrical connector. Moreover, the electrical connector of the present invention can meet the requirements of miniaturization and high signal transmission rate. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present invention will be apparent to those skilled in the art by reading the following description, with reference to the attached drawings, in which: 
         FIG. 1  is a perspective view of an electrical connector in accordance with the present invention; 
         FIG. 2  is a perspective view of the electrical connector of  FIG. 1  except a shielding shell; 
         FIG. 3  is an exploded perspective view of the electrical connector without the shielding shell of  FIG. 2 ; and 
         FIG. 4  is another angle of exploded perspective view of the electrical connector without the shielding shell of  FIG. 2 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to  FIG. 2 , an electrical connector according to the present invention includes a first insulating body  100 , a second insulating body  200  mounted to the first insulating body  100 , a plurality of first terminals  310  disposed in the first insulating body  100 , and a plurality of second terminals  320  disposed in the second insulating body  200 . 
     Referring to  FIG. 3  and  FIG. 4 , the first insulating body  100  has a rectangular base board  101  disposed levelly, and a rectangular first tongue board  102  which is formed by the base board  101  stretching rearward from a bottom of a rear thereof. Two opposite side edges of the first tongue board  102  protrude upward beyond a top surface  150  of the base board  101  to form a pair of clipping walls  120  which define a receiving space  121  therebetween. Tops of rear ends of the pair of clipping walls  120  protrude towards each other to form a pair of buckling barbs  122 . A restraining channel  123  is opened in a lower portion of an inside of the clipping wall  120  to communicate with the receiving space  121 , and extends longitudinally with a rear end thereof being opened freely. A top face  110  of the first tongue board  102  defines a plurality of fastening cavities  130  communicating with the receiving space  121  and arranged at regular intervals along a transverse direction thereof. Each of the fastening cavities  130  extends longitudinally to penetrate through the first tongue board  102 . The top surface  150  of the base board  101  defines a plurality of receiving cavities  160  one-on-one corresponding to the fastening cavities  130 , and each extending longitudinally to be connected with a front end of one of the fastening cavities  130  by means of a connecting passage  140  opened at a rear end of the base board  101 . 
     Each of the first terminals  310  has a fastening strip  312  and a first contact portion  311  which is connected with one end of the fastening strip  312  in a step manner by a connecting portion  313 . The first terminals  310  are formed by extending forward from a front edge of a shaping part  314  and spaced from one another along a transverse direction of the shaping part  314 , wherein the other ends of the fastening strips  312  are connected with the front edge of the shaping part  314 . The fastening strips  312  are secured in the fastening cavities  130  of the first insulating body  100  respectively, the first contact portions  311  are disposed in the corresponding receiving cavities  160  and project beyond the top surface  150  of the base board  101 , and the connecting portions  313  are restrained in the corresponding connecting passages  140 . The shaping part  314  is exposed behind the first tongue board  102  of the first insulating body  100 . In this embodiment, in order to achieve a firmer engagement between the first terminals  310  and the first insulating body  100 , the fastening strip  312  may be designed with a crooked shape, and accordingly, the corresponding fastening cavity  130  is altered to match with the fastening strip  312  of the crooked shape. 
     Referring to  FIG. 3  and  FIG. 4  again, the second insulating body  200  has a rectangular base portion  201  and a second tongue board  202  which is formed by the base portion  201  stretching forward from a bottom of a front thereof. A buckling fillister  203  is opened in a top of the base portion  201 . Tops of rear ends of two opposite sides of the base portion  201  are provided with a pair of buckling gaps  210 . A pair of restraining ribs  230  oppositely protrudes outward from lower portions of the two opposite sides of the base portion  201  and each extends longitudinally to match with the restraining channel  123  of the first insulating body  100 . The base portion  201  defines a plurality of fastening passageways  240  arranged at regular intervals along a transverse direction thereof and each extending longitudinally to penetrating through the base portion  201 . A top of the second tongue board  202  defines a plurality of receiving fillisters  220  each extending longitudinally to be aligned with one of the fastening passageways  240  and further connected with a front end of the corresponding fastening passageway  240 . 
     Each of the second terminals  320  has a fastening slice  322  and a second contact portion  321  which is connected with one end of the fastening slice  322  and slanted beyond a plane of the fastening slice  322 . The fastening slices  322  are secured in the fastening passageways  240  of the second insulating body  200  respectively. The second contact portions  321  stretch out of the front of the base portion  201  and are located above the corresponding receiving fillisters  220 . When the second contact portions  321  electrically connect with a mating connector, the second contact portions  321  are pressed into the receiving fillisters  220  respectively. 
     Referring to  FIG. 2 , when the second insulating body  200  with the second terminals  320  is assembled to the first insulating body  100  with the first terminals  310 , the second insulating body  200  is firstly inserted forward to make the second tongue board  202  received in the receiving space  121 , and the restraining ribs  230  inserted into the corresponding restraining channels  123 . Then the second insulating body  200  keeps on being pushed forward to make the restraining ribs  230  slide forward along the corresponding restraining channels  123  until a front end of the second tongue board  202  abuts against the rear end of the base board  101 . At this time, the base portion  201  is received in the receiving space  121  and clipped between the clipping walls  120 . The buckling barbs  122  are buckled in the buckling gaps  210  respectively to prevent the second insulating body  200  from moving rearward, and the restraining ribs  230  are restrained in the corresponding restraining channels  123 , so that make the second insulating body  200  firmly engaged with the first insulating body  100 . A bottom surface of the base portion  201  of the second insulating body  200  abuts against the top face  110  of the first tongue board  102  of the first insulating body  100  so as to further restrain the fastening strips  312  of the first terminals  310  in the fastening cavities  130 . Moreover, the front end of the second tongue board  202  abuts against the rear end of the base board  101  and restrains the connecting portions  313  in the respective connecting passages  140 , so that further ensures the first terminals  310  firmly assembled in the first insulating body  100 . Lastly, the shaping part  314  is cut off from the fastening strips  312 . 
     Referring to  FIG. 1 , the electrical connector further includes a rectangular hollow shielding shell  400  enclosing the first insulating body  100  and the second insulating body  200 , with an inserting space  410  being formed between a top plate  401  of the shielding shell  400  and the tongue boards  102 ,  202 . A locking barb  420  is provided at an inside of the top plate  401  and buckled in the buckling fillister  203  of the second insulating body  200  to make the shielding shell  400  firmly secured around the insulating bodies  100 ,  200 . The shielding shell  400  not only can protect the insulating bodies  100 ,  200  and the terminals  310 ,  320  from harm, but also can shield the terminals  310 ,  320  from static electricity. 
     As described above, in the process of assembling the electrical connector of the present invention, the second insulating body  200  can be easily assembled to the first insulating body  100  so that economizes a great deal of manpower and material resources, reduces manufacture cost of the electrical connector, and further increases productivity of the electrical connector. Moreover, the electrical connector of the present invention can meet the requirements of miniaturization and high signal transmission rate.