Patent Publication Number: US-7914337-B1

Title: Electrical connector with adjacent terminals bent outward

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the priority benefit of Taiwan application serial no. 098223744, filed on Dec 18, 2009. The entirety of the above-mentioned patent application is incorporated herein by reference and made a part of this specification. 
     BACKGROUND 
     1. Technical Field 
     The present invention relates to an electrical connector, and more particularly to an electrical connector with a USB 2.0 interface and a USB 3.0 interface. At least two of the second terminals located at two sides of the USB 3.0 interface are bent outwardly at a predetermined angle, so that cross talk between adjacent two second terminals can be reduced. 
     2. Description of the Related Art 
     Currently, due to the plug and play function, peripheral devices with USB interfaces become popular. A data transfer rate provided by the USB 2.0 protocol may be as high as 480 Mbit/s. However, with the development of multimedia technology, it takes more than ten minutes if a multimedia file of 25 GB is downloaded with the USB 2.0 protocol and that may not satisfy consumers&#39; demand. Therefore, the USB 3.0 protocol providing a data transfer rate as high as 4.8 Gbit/s is introduced, so that the time consumed for downloading the multimedia file of 25 GB with the USB 3.0 is one-tenth of the consumed time with the USB 2.0 protocol. 
     Generally, a conventional USB 2.0/USB 3.0 electrical connector has a plurality of solder joints, which are arranged parallel to each other and separated from each other with a fixed distance.  FIG. 1  shows a schematic view of a conventional electrical connector. Referring to  FIG. 1 , the conventional USB 2.0/USB 3.0 electrical connector  100  includes an insulating sheet  110  with a plurality of solder joints  120 . The solder joints  120  are arranged parallel to each other and provided for soldering with cables  130 . However, the electrical connector  100  has the following shortcomings: (1) since the solder joints  120  are arranged parallel to each other and separated from each other with a fixed distance, when the USB 3.0 protocol is applied, strong cross talk would be generated between the solder joints  120  due to the relatively small distance between the solder joints  120 ; (2) the thickness of the insulating sheet  110  of the electrical connector  100  is only about 1.0 millimeter, that is, the distance between the solder joints  120  on opposite sides of the insulating sheet  110  is too small, so that the cross-talk would also be increased between the solder joints  120  easily. A structure similar to the electrical connector  100  is disclosed, for example, in FIGS. 38-45 of U.S. Patent Publication No. US2009/0042450A and in FIG. 2 of U.S. Pat. No. 7,534,141. 
     Therefore, it is necessary to design a new electrical connector that can overcome the above-mentioned shortcomings. 
     BRIEF SUMMARY 
     The present invention relates to an electrical connector with a USB 2.0 interface and a USB 3.0 interface. At least two of the second terminals located at the two sides of the USB 3.0 interface are bent outwardly at a predetermined angle, so that cross talk between two of the second terminals can be reduced. 
     The present invention also relates to an electrical connector, wherein the thickness of the solder portion is 1.20 millimeter, so that the cross talk between the second terminals located at two sides of the solder portion can be reduced. 
     The present invention provides an electrical connector. The electrical connector includes an insulating body, a plurality of first terminals, a plurality of second terminals and a shielding shell. One end of a base disposed on the insulating body has a first solder portion and a second solder portion, and another end of the base has a connection portion. The first terminals run through the base. The first terminals are arranged parallel to each other and located on two sides of the first solder portion and the connection portion. The second terminals run through the base. The second terminals are located on two sides of the second solder portion and the connection portion. At least two of the second terminals located on the two sides of the second solder portion are bent outwardly at a predetermined angle, so as to increase a distance between two adjacent second terminals and reduce cross talk between the two adjacent second terminals. The shielding shell sleeves on the connection portion and is used for reducing electromagnetic interference between the first terminals and the second terminals. 
     Other objectives, features and advantages of the present invention will be further understood from the further technological features disclosed by the embodiments of the present invention wherein there are shown and described preferred embodiments of this invention, simply by way of illustration of modes best suited to carry out the invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       These and other features and advantages of the various embodiments disclosed herein will be better understood with respect to the following description and drawings, in which like numbers refer to like parts throughout, and in which: 
         FIG. 1  is a schematic view of a conventional electrical connector. 
         FIG. 2  is a schematic view of an electrical connector according to an embodiment of the present invention. 
         FIG. 3   a  is a top view of the electrical connector of  FIG. 2 . 
         FIG. 3   b  is a bottom view of the electrical connector of  FIG. 2 . 
         FIG. 3   c  is a schematic cross-sectional view of the electrical connector of  FIG. 3   b , taken along line A-A thereof. 
         FIG. 3   d  is a front view of the electrical connector of  FIG. 2 . 
     
    
    
     DETAILED DESCRIPTION 
     It is to be understood that other embodiment may be utilized and structural changes may be made without departing from the scope of the present invention. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. The use of “including,” “comprising,” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless limited otherwise, the terms “connected,” “coupled,” and “mounted,” and variations thereof herein are used broadly and encompass direct and indirect connections, couplings, and mountings. 
       FIG. 2  is a schematic view of an electrical connector according to an embodiment of the present invention.  FIG. 3   a  is a top view of the electrical connector according to an embodiment of the present invention.  FIG. 3   b  is a bottom view of the electrical connector according to an embodiment of the present invention.  FIG. 3   c  is a schematic cross-sectional view of the electrical connector shown in  FIG. 3   b , taken along line A-A thereof.  FIG. 3   d  is a front view of the electrical connector according to an embodiment of the present invention. 
     Referring to  FIGS. 2-3   d , the electrical connector of the embodiment of the present invention includes an insulating body  10 , a plurality of first terminals  20 , a plurality of second terminals  30  and a shielding shell  40 . 
     The insulating body  10  can be made of insulating material, such as plastic, but not limited hereto. A base  11  is disposed on the insulating body  10 . The base  11  includes a first solder portion  12 , a second solder portion  13  and a connection portion  14 . The first solder portion  12  and the second solder portion  13  are located on one end of the base  11  and the connection portion  14  is located on another end of the base  11 . The thicknesses of the first solder portion  12  and the second solder portion  13  both can be 1.20 millimeter, but not limited hereto. The thicknesses of the first solder portion  12  and the second solder portion  13  are greater than that of the insulating sheet  110  of the conventional electrical connector  100 , therefore the cross talk between the second terminals  30  on opposite sides of the second solder portion  13  can be reduced. 
     The plurality of first terminals  20  run through the base  11 . The first terminals  20  are arranged parallel to each other and located on the two sides of the first solder portion  12  and the connection portion  14 . The first terminals  20  can be USB 2.0 terminals, but not limited to, and the number of the first terminals  20  can be five. 
     The second terminals  30  also run through the base  11 . The second terminals  30  are located on two sides of the second solder portion  13  and the connection portion  14 . At least two of the second terminals  30  located on the two sides of the second solder portion  13  are bent outwardly at a predetermined angle, so as to increase a distance between two adjacent second terminals  30  and reduce cross talk between the two adjacent second terminals  30 . The predetermined angle can be in the range from 25° to 40°, and is preferably 30°. The second terminals  30  can be USB 3.0 terminals, but not limited to, and the number of the second terminals  30  can be five. 
     The shielding shell  40  sleeves on the connection portion  14  and is used for reducing electromagnetic interference between the first terminals  20  and the second terminals  30 . The shielding shell  40  can be made of metal. 
     As shown in  FIGS. 3   a - 3   d , in the electrical connector of the embodiment of the present invention, because the two second terminals  30  of USB 3.0 located on the two sides of the second solder portion  13  are bent outwardly at about 30°, the distance between two adjacent second terminals  30  increases obviously and the cross talk between the two adjacent second terminals  30  can be reduced. In addition, as shown in  FIG. 3   c , the thicknesses of the first solder portion  12  and the second solder portion  13  both are 1.20 millimeter, which is greater than that of the insulating sheet  110  of the conventional electrical connector  100 . Therefore the cross talk between the second terminals  30  on the opposite sides of the second solder portion  13  can be reduced. Consequently, for comparing with the conventional electrical connector, the electrical connector of the embodiment of the present invention is creative. 
     In summary, the electrical connector of the present invention has at least the following advantages. First, at least two second terminals  30  are bent outwardly at about 30° to increase the distance between the two adjacent second terminals  30 , so the cross talk between the two adjacent second terminals  30  can be reduced. Second, the thickness of the second solder portion  13  is 1.20 millimeter, so the cross talk between the second terminals  30  on the opposite sides of the second solder portion  13  can be reduced. Therefore, the shortcomings of the conventional electrical connector can be overcome by the electrical connector of the present invention. 
     The above description is given by way of example, and not limitation. Given the above disclosure, one skilled in the art could devise variations that are within the scope and spirit of the invention disclosed herein, including configurations ways of the recessed portions and materials and/or designs of the attaching structures. Further, the various features of the embodiments disclosed herein can be used alone, or in varying combinations with each other and are not intended to be limited to the specific combination described herein. Thus, the scope of the claims is not to be limited by the illustrated embodiments.