Abstract:
The present invention provides a printed board connector, and the printed board connector includes an insulating casing, a plurality of signal modules, and a plurality of metal shielding elements. The insulating casing includes a rib. The rib extends a plurality of insulating shielding walls downwardly and the signal modules are received between the insulating shielding walls and are tightly mounted in the rib. The metal shielding elements are received between the insulating shielding walls and are tightly mounted in the rib and the signal modules. When a user presses the printed circuit connector to connect with a circuit board, the rib guides and positions the signal modules and the metal shielding elements, moreover, the rib enhances the strength of the assembling with the circuit board.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a connector, especially for a printed board connector. 
         [0003]    2. Description of Related Art 
         [0004]    U.S. Pat. No. 7,229,319 provides a printed board connector which is often be used in industry, the printed board connector disclosed in U.S. Pat. No. 7,229,319 includes an insulating casing, a plurality of signal modules, and a plurality of metal shielding devices, the signal modules and the metal shielding devices are received inside the insulating casing, wherein each signal module includes a plastic housing and a pair of signal terminals penetrating the plastic housing, two ends of each signal terminal stretch out of a top side and a bottom side of the insulating casing, each metal shielding device clips with the insulating casing and is positioned between two of the signal modules, and two of the signal terminals respectively are separated by each metal shielding device. 
         [0005]    When a user presses the printed board connector to connect with a circuit board, the circuit board provides a reacting force to the signal modules and metal shielding devices at the same time. The reacting force often moves the signal modules and metal shielding devices into the insulating casing and has the effect that the signal terminals and the metal shielding devices cannot be pressed onto a correct position of a surface of the circuit board. Thus, it is not convenient for any user to use the printed board connector disclosed in U.S. Pat. No. 7,229,319. 
         [0006]    Hence, the inventors of the present invention believe that the shortcomings described above can be improved and finally suggest the present invention which is of a reasonable design and is an effective improvement based on deep research and thought. 
       SUMMARY OF THE INVENTION 
       [0007]    It is an object of the present invention to provide a printed board connector that reinforces the assembly of the printed board connector with the circuit board. 
         [0008]    To achieve the above object, the present invention provides a printed board connector, and the printed board connector includes an insulating casing, a plurality of signal modules, and a plurality of metal shielding elements. The insulating casing includes a first inner wall and a second inner wall which is opposite to the first inner wall, two ends of a rib are connected to the first inner wall and the second inner wall respectively, and a first receiving space and a second receiving space are formed in the insulating casing and are separated by the rib. A plurality of insulating shielding walls extend from the rib toward the second receiving space, and the signal modules are received between the insulating shielding walls and are tightly mounted in the rib. The metal shielding elements are received between the insulating shielding walls and are tightly mounted in the rib and the signal modules. 
         [0009]    When a user presses the printed circuit connector to connect with a circuit board, the rib, which is inside the insulating casing, guides and positions the signal modules and the metal shielding elements. Moreover, the rib enhances the strength of the assembly of the printed board connector with the circuit board. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0010]      FIG. 1  is a perspective view of the present invention. 
           [0011]      FIG. 2  is a cross-sectional view of the present invention. 
           [0012]      FIG. 3  is another cross-sectional view of the present invention at different viewpoint. 
           [0013]      FIG. 4  is a bottom view of the present invention. 
           [0014]      FIG. 5  is a perspective view of the signal module of the present invention. 
           [0015]      FIG. 6  is a perspective view of the metal shielding element of the present invention. 
           [0016]      FIG. 7  is a perspective view of a buffer of the present invention. 
           [0017]      FIG. 8  is a top view of which the buffer is assembled with the insulating casing of the present invention. 
           [0018]      FIG. 9  is a perspective view of which the buffer hooks a protruding block of the insulating casing of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0019]    As shown in  FIG. 1  to  FIG. 3 , the present invention discloses a printed board connector, and the printed board connector includes an insulating casing  1 , a plurality of signal modules  2 , and a plurality of metal shielding elements  3 . 
         [0020]    The insulating casing  1  has a first inner wall  11 , a second inner wall  12  which is opposite to the first inner wall  11 , a third inner wall  13 , and a forth inner wall  14  which is opposite to the third inner wall  13 . The first inner wall  11 , the second inner wall  12 , the third inner wall  13 , and the forth inner wall  14  form an enclosure wall, and two ends of a rib  15  are connected with the first inner wall  11  and second inner wall  12  respectively. 
         [0021]    A first receiving space  16  and a second receiving space  17  are formed in the insulating casing  1  and are separated by the rib  15 . The first receiving space  16  is a long and narrow groove and a plurality of terminal grooves  18  are mounted on the two side walls of the receiving space  16 , and the positions of the terminal grooves  18  which are on the opposite sides are corresponding. A plurality insulating shielding walls  19  extend from the rib  15  toward the second receiving space  17 , the rib  15  and the insulating shielding walls  19  are one piece, and the insulating shielding walls  19  are used to avoid signal disturbances. 
         [0022]    As shown in  FIG. 2  to  FIG. 4 , the insulating shielding walls  19  are connected between the third inner wall  13  and the forth inner wall  14 , and the insulating shielding walls  19  and the insulating casing  1  are one piece. Each of the insulating shielding walls  19  has a recess  191 , and some of the recesses  191  are close to the third inner wall  13  and the other recesses  191  are close to the forth inner wall  14 . 
         [0023]    As shown in  FIG. 4  and  FIG. 5 , one of the signal modules  2  along with one of the metal shielding elements  3  respectively are placed between two of the insulating shielding walls  19 , and each of the signal modules  2  includes an insulating housing  21  and a pair of signal terminals  22  which are made of metal and are passed through the insulating housing  21 , and two of the signal terminals  22  are responsible for outputting differential signal respectively. 
         [0024]    Each of the signal terminals  22  has a first plugging portion  221 , a fixing portion  222  and a first connecting portion  223 . The fixing portion  222  is extended from the first plugging portion  221  and is bent relative to the first plugging portion  221 . The first connecting portion  223  is extended from the fixing portion  222  and is bent relative to the fixing portion  222 . The fixing portions  222  are inserted into corresponding insulating housing  21 , the first plugging portions  221  and the first connecting portions  223  are stretched out on opposite sides of each of the insulating housings  21 , and the first connecting portions  223  are responsible for connecting with a circuit board. 
         [0025]    A first groove  211  is positioned at a top surface of each of the insulating housings  21 , and a second groove  212  is positioned at a bottom surface of each of the insulating housings  21 . The rib  15  is wedged with the first groove  211  (as shown in  FIG. 2 ) and another portion of the insulating housing  21  is wedged with the recesses  191 , so as to reinforce the assembly of the printed board connector with the circuit board. Each of the second grooves  212  is mounted between the pair of the first connecting portions  223 , so as to shielding off a signal produced by the first connecting portions  223  which are positioned at two sides of the metal shielding element  3 . 
         [0026]    Each of the first plugging portions  221  includes a first elastic arm  2211  and a first piece  2212 , the first piece  2212  is extended from the first elastic arm  2211  and is bent relative to the first elastic arm  2211  with an angle. The first plugging portions  221  pass through terminal grooves  18  respectively (as shown in  FIG. 2 ), wherein the elastic arms  2211  enter into one side of the terminal grooves  18  respectively, the first pieces  2212  are stretched out another sides of the terminal grooves  18  respectively and enter into the first receiving space  16  (as shown in  FIG. 1 ). As for the fixing portion  222  are received in the second receiving space  17  (as shown in  FIG. 3 ), each of the first connecting portions  223  includes a pair of first elastic curved arms  2231  which form a first through hole  2232  between them, the first connecting portions  223  are stretched out the insulating casing  1  and are responsible for connecting with the circuit board. 
         [0027]    As shown in  FIG. 4  and  FIG. 6 , the metal shielding element  3  separates signal terminals  22  and prevents signal disturbance caused by adjacent signal terminals  22 . Each of the metal shielding elements  3  includes a base portion  31 , a pair of second plugging portion  32 , a clipping portion  33  and a second connecting portion  34 , the second plugging portion  32  and the clipping portion  33  are connected with opposite two sides of the base portion  31 , the clipping portion  33  is metal piece and clips with the base  31  vertically, and the second connecting portion  34  is connected one side of the clipping portion  33 . 
         [0028]    The base portions  31  are received between two of the insulating shielding walls  19  respectively, the second plugging portion  32  is similar to the first plugging portion  221 , and the second connecting portion  34  is similar to first connecting portion  223 . Each of the second plugging portions  32  has a second elastic arm  321  and a second piece  322 , the second piece  322  is extended from the second elastic arm  321  and is bent relative to the second elastic arm  321 . The second plugging portions  32  are passed through the terminal grooves  18  respectively  9  (as shown in  FIG. 2 ), wherein the second elastic arms  321  enter in one side of the terminal grooves  18  respectively, as for the second pieces  322  are stretched out another sides of the terminal grooves  18  respectively and enter in the first receiving space  16  (as shown in  FIG. 1 ). 
         [0029]    AS for each of the second connecting portions  34  includes a pair of second elastic curved arms  341 , which form a second through hole  342  between them, the second connecting portions  34  stretch out of the insulating casing  1  and are responsible for connecting with the circuit board. 
         [0030]    A side of each of the base portion  31  has a clipping groove  311 , the rib  15  is wedged with the clipping grooves  311  of the metal shielding elements  3 , and wherein some of the insulating shielding wall  19  further has a notch  192 . The thickness of the notch  192  is corresponding to the thickness of the clipping portion  33 . The clipping portions  33  of the metal shielding elements  3  are wedged with the second grooves  212  of the insulating housing  21  respectively, and so as to shielding off signals outputted by first connecting portions  22  which are close to two opposite sides of the clipping portions  33  and preventing signal disturbances. The clipping portions  33  of the metal shielding elements  3  are wedged with the notches  192  of insulating shielding walls  19 , and are responsible for increasing the strength of the assembly of the printed board connector with the circuit board. 
         [0031]    As shown in  FIG. 7  to  FIG. 9 , the printed board connector of the present invention further comprises a pair of buffers  4 , the pair of buffers  4  is assembled at two ends of the first receiving space  16 , and two T-shaped protruding blocks  5  are formed at the two ends of the first receiving space  16 . Each buffer  4  has a main body  41 , four springs  42  and two rollers  43 , a plurality of spring receiving grooves  411  are concavely formed in the main body  41  and each spring receiving groove  411  are mounted across two neighbor surfaces of the main body  41 . The spring receiving grooves  411  are used for receiving the springs  42 , wherein the lengths of the springs  42  are longer than the depths of the spring receiving grooves  411  so that the springs  42  are pre-pressed. The main boy  41  downwardly extends to form two inverse hooks  412 , and the inverse hooks  412  hook the protruding blocks  5 , the two ends of each rollers  43  presses on one surface of the main body  41  and the springs  42 . 
         [0032]    The present invention has the following characteristics. 
         [0033]    1. When the printed board connector is pressed on the circuit board and is electrically connected with a circuit board, the rib  15  of the insulating casing  1  guides and positions the signal module  2  and the metal shielding element  3 , so as to increase the strength of the assembly of the printed board connector with the circuit board. 
         [0034]    2. The insulating shielding wall  19  shield off signals outputted from neighbor signal terminals  22  and prevent signal disturbances. 
         [0035]    3. The recess  191  of the insulating shielding wall  19  is wedged with signal module  2 , the notch  192  of the insulating shielding wall  19  is wedged with metal shielding element  3 , and so as to increase the strength of the assembly of the printed board connector with the circuit board. 
         [0036]    The above-mentioned descriptions represent merely the preferred embodiment of the present invention, without any intention to limit the scope of the present invention thereto. Various equivalent changes, alternations, or modifications based on the claims of present invention are all consequently viewed as being embraced by the scope of the present invention.