Patent Publication Number: US-2022239042-A1

Title: Electrical connector with electromagnetic shielding function

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 that can prevent inside and outside electromagnetic interference of the electrical connector and has an electromagnetic shielding function. 
     2. Description of the Prior Art 
     Connectors are connecting components and accessories for electrical signals, and the electronic devices translate and transmit the signal to each other through cables and connectors. That is to say, the connectors are the communicating bridges for the signals. The connectors are widely applied to cars and computer peripheral and communicating data applications, industries, military and aerospace industry, transportation, consumer electronics, medical treatments, instruments, commercial equipment and so on. Therefore, the connectors play an important role in many fields. 
     In general, when the frequency of the signal transmitted by the connector is higher, the signal is more easily affected by internal or external factors, such as Electromagnetic Interference (EMI) or Radio Frequency Interference (RFI). The connector will suffer from electromagnetic interference or radio frequency interference, resulting in incomplete signals to affect the transmission quality. In addition, with the development of the electronic industry, electronic products all tend to be miniaturized, so that the distances between the cables inside the connector are getting closer and closer. Since the reduced distance between the cables is not conducive to the transmission of high-frequency signals, it is easy to cause crosstalk between the high-frequency differential cables. Therefore, the signal transmission characteristics of the connector are affected due to the above-mentioned interference reasons. 
     In order to prevent inside and outside electromagnetic interference of the electrical connector, the cable includes an insulating layer covering the wire core and includes a meal mesh covering the insulating layer to form the shielding layer. The main function of the shielding layer is to shield the electromagnetic field generated by the cable during energizing in the insulated wire core to reduce electromagnetic interference to the external environment. However, when the cable is connected to the circuit board of the electrical connector, the shielding layer and the insulating layer of the cable need to be stripped to expose the wire core, and then the wire core is soldered on the circuit board. At this time, there is no shielding layer protection between the cores of each cable, which may still cause crosstalk between the cables. In addition, the stripped shielding layer may be exposed outside the cable, so that the shielding layer has a great influence on the resistance connection and insertion loss of the cable, thereby reducing the transmission quality of the cable. 
     Therefore, it is necessary to provide an electrical connector to prevent inside and outside electromagnetic interference of the electrical connector to solve the problems of the prior art. 
     SUMMARY OF THE INVENTION 
     Therefore, the present invention provides an electrical connector with electromagnetic shielding function. In one embodiment, the electrical connector with electromagnetic shielding function includes a circuit board, a plurality of cables and a shielding component. The circuit board includes a plurality of conductive pads and a ground component. The plurality of cables are connected to the circuit board. Each of cables includes a wire core and a shielding layer covering the wire core. One end of the wire core is exposed from the shielding layer, and the wire cores of the cables are electrically connected to the conductive pads respectively. The shielding component is disposed on the circuit board and electrically connected to the ground component. The shielding component forms a plurality of shielding grooves for covering the conductive pads and the cables. Each of shielding grooves includes a contact portion and a shielding portion extending from the contact portion. The contact portions of the shielding grooves contact the shielding layers of the cables in series and the shielding portions of the shielding grooves cover the exposed wire cores of the cables respectively to provide electromagnetic shielding to the cables. 
     Wherein, the shielding component includes a plurality of rib structures configured on the contact portions of the shielding grooves respectively. The rib structures are configured to respectively contact the shielding layers of the cables. 
     Wherein, the shapes of the contact portions of the shielding grooves are corresponding to the shapes of the shielding layers of the cables. 
     Wherein, the conductive pads include a first conductive pad and a second conductive pad. The cables include a first cable, and the first cable includes a first wire core and a second wire core. The first conductive pad and the second conductive pad are disposed in a first shielding groove of the shielding grooves, and the first wire core and the second wire core are connected to the first conductive pad and the second conductive pad respectively. 
     Wherein, the shielding component includes a plurality of protruding structures configured on the shielding portions of the shielding grooves. The protruding structures are located between the two adjacent cables respectively. 
     Furthermore, the ground component includes a plurality of ground pads. The number and positions of the ground pads are corresponding to those of the protruding structures, and the protruding structures are connected to the ground pads respectively. 
     Wherein, the shielding component includes a first sidewall and a second sidewall. The first sidewall is opposite to the second sidewall and the shielding grooves are disposed between the first sidewall and the second sidewall. The lengths of the first sidewall and the second sidewall are smaller than the lengths of the protruding structures. 
     In one embodiment, the ground component is a ground layer, and the shielding component is electrically connected to the ground layer by means of riveting or snapping. 
     Wherein, the material of the shielding component is one of metal and conductive plastics. 
     Wherein, the shielding component includes a third sidewall configured on the shielding portion and connected to the shielding grooves to make the shielding portions completely cover the wire cores of the cables and the shielding component not to contact the wire cores. 
     In summary, the electrical connector with electromagnetic shielding function of the present invention can cover the wire core of the cable and contact the shielding layer of the cable at the same time by the shielding component to provide the electromagnetic shielding, thereby increasing efficiency. Furthermore, the electrical connector of the present invention can separate the two adjacent cables and generate electromagnetic shielding through the protruding structures of the shielding component, to prevent crosstalk between cables inside electrical connectors, thereby increasing the electromagnetic shielding efficiency. Moreover, the shielding component of the electrical connector of the present invention can contact the shielding layer of the cable in different ways to adapt to cables with different wire diameters, thereby improving the efficiency. In addition, the electrical connector of the present invention can cover the wire core and the shielding layer of the cable to prevent the cables of the electrical connector from being electromagnetically interfered by other external electronic components, thereby improving the transmission quality and efficiency. 
    
    
     
       BRIEF DESCRIPTION OF THE APPENDED DRAWINGS 
         FIG. 1  is a partial exploded diagram illustrating an electrical connector with electromagnetic shielding function according to an embodiment of the present invention. 
         FIG. 2  is an exploded diagram illustrating the circuit board, the cables and the shielding component in  FIG. 1 . 
         FIG. 3  is a sectional diagram illustrating the circuit board, the cables and the shielding component in one perspective view of  FIG. 1 . 
         FIG. 4  is a sectional diagram illustrating the circuit board, the cables and the shielding component in another perspective view of  FIG. 1 . 
         FIG. 5A  is a structure schematic diagram illustrating the shielding component according to an embodiment of the present invention. 
         FIG. 5B  is a sectional diagram illustrating the shielding component, the circuit board and the cables in one perspective view of  FIG. 5A . 
         FIG. 6A  is a structure schematic diagram illustrating the shielding component according to another one embodiment of the present invention. 
         FIG. 6B  is a sectional diagram illustrating the shielding component, the circuit board and the cables in one perspective view of  FIG. 6A . 
         FIG. 7A  is a structure schematic diagram illustrating the shielding component according to an embodiment of the present invention. 
         FIG. 7B  is an assembly diagram illustrating the shielding component, the circuit board and the cables in  FIG. 7A . 
         FIG. 8A  is a structure schematic diagram illustrating the shielding component according to an embodiment of the present invention. 
         FIG. 8B  is a sectional diagram illustrating the shielding component, the circuit board and the cables in one perspective view of  FIG. 8A . 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     For the sake of the advantages, spirits and features of the present invention can be understood more easily and clearly, the detailed descriptions and discussions will be made later by way of the embodiments and with reference of the diagrams. It is worth noting that these embodiments are merely representative embodiments of the present invention, wherein the specific methods, devices, conditions, materials and the like are not limited to the embodiments of the present invention or corresponding embodiments. Moreover, the devices in the figures are only used to express their corresponding positions and are not drawing according to their actual proportion. 
     In the description of this specification, the description with reference to the terms “a specific embodiment”, “another specific embodiment” or “parts of specific embodiments” etc. means that the specific feature, structure, material or feature described in conjunction with the embodiment include in at least one embodiment of the present invention. In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments in a suitable manner. 
     In the description of the present invention, it is to be understood that the orientations or positional relationships of the terms “longitudinal, lateral, upper, lower, front, rear, left, right, top, bottom, inner, outer” and the like are based on the orientation or positional relationship shown in the drawings. It is merely for the convenience of the description of the present invention and the description of the present invention, and is not intended to indicate or imply that the device or component referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as limitations of the invention. 
     Please refer to  FIG. 1  and  FIG. 2 .  FIG. 1  is a partial exploded diagram illustrating an electrical connector  1  with electromagnetic shielding function according to an embodiment of the present invention.  FIG. 2  is an exploded diagram illustrating the circuit board  11 , the cables  12  and the shielding component  13  in  FIG. 1 . As shown in  FIG. 1  and  FIG. 2 , in this embodiment, the electrical connector  1  with electromagnetic shielding function includes a case  10 , a circuit board  11 , a plurality of cables  12  and a shielding component  13 . The circuit board  11 , the plurality of cables  12  and the shielding component  13  are configured in the case  10 . The circuit board  11  includes a plurality of conductive pads  111  and a plurality of ground pads  112 . The plurality of cables  12  are connected to the circuit board  11 . Each of cables  12  includes a wire core  121  and a shielding layer  123  covering the wire core  121 . One end of the wire core  121  is exposed from the shielding layer  123 , and the wire cores  121  of the cables  12  are electrically connected to the conductive pads  111  respectively. The shielding component  13  is configured on the circuit board  11  and electrically connected to the ground pads  112 . The shielding component  13  forms a plurality of shielding grooves  131  for covering the conductive pads  111  and the cables  12 . The shielding groove  131  includes a contact portion  1311  and a shielding portion  1312  extended from the contact portion  1311 . The contact portions of the shielding grooves  131  are contacted the shielding layers  123  of the cables  12  respectively and the shielding portions  1312  of the shielding grooves  131  cover the exposed wire cores  121  of the cables  12  respectively to provide electromagnetic shielding to the cables  12 . 
     In practice, the case  10  of the electrical connector  1  with electromagnetic shielding function has an opening  101  and a containing space communicated with the opening  101 . The circuit board  11 , the cables  12  and the shielding component  13  can be disposed in the containing space from the opening  101  to be installed in the case  10 . When the electrical connector  1  is assembled, one end of the circuit board  11  is exposed outside the case  10  to connect to the socket of the electrical connector  1 , and the other end of the circuit board  11  includes a plurality of conductive pads  111  and a plurality of ground pads  112  configured to electrically connect the cables  12  and the shielding component  13  respectively. The conductive pads  111  and the ground pads  112  can be arranged in a straight line, and the conductive pads  111  and the ground pads  112  can be staggered. It should be noted that the arrangement of the conductive pads  111  and the ground pads  112  is not limited in  FIG. 2 , and the sizes of the conductive pads  111  and the ground pads  112  can be designed as requirement. 
     As shown in  FIG. 2 , in this embodiment, the cable  12  includes a wire core  121 , insulating layer  122  and a shielding layer  123 . The insulating layer  122  covers the wire core  121 , and the shielding layer  123  covers the insulating layer. Furthermore, one end of the insulating layer  122  is exposed from the shielding layer  123 , and one end of the wire core  121  is exposed from the insulating layer  122 . When the electrical connector  1  is assembled, the wire core  121  of the cable  12  is electrically connected to the conductive pad  111  of the circuit board  11 . In practice, the wire core  121  can be fixed and electrically connected to the conductive pad  111  of the circuit board  11  by welding for transmission. The shielding layer  123  can be a sheet-like or mesh-like aluminum foil layer to shield the electromagnetic field generated by the wire core  121  due to the passing of current. The material of the shielding layer  123  is not limited to aluminum. The material of the shielding layer  123  also can be other conductive materials. The insulating layer  122  between the wire core  121  and the shielding layer  123  can not only ensure the transmission function of the wire core  121 , but also separate the wire core  121  from the shielding layer  123 . The cable  12  further can include an oversheath (not shown in figure) covering the shielding layer  123 , and partial shielding layer  123  is exposed from the oversheath. In this embodiment, the shielding layer  123  of the cable  12  is configured in the case  10  of the electrical connector  1  and the oversheath of the cable  12  is configured outside of the case  10  of the electrical connector  1 , but it is not limited hereto. The length of the shielding layer of the cable and the configuration of the oversheath can be determined according to design or requirement. 
     The shielding component  13  is substantially U-shaped and has a top portion  132 , a first sidewall  133 A and a second sidewall  133 B. Moreover, the shielding component  13  includes a plurality of protruding structure  134  extended from the top portion  132  and disposed between the first sidewall  133 A and the second sidewall  133 B. The shielding groove  131  can be formed among the top portion  132 , the first sidewall  133 A and the second sidewall  133 B, among the top portion  132 , the second sidewall  133 B and the protruding structure  134 , and among the top portion and the two protruding structures  134 . In addition, each of shielding grooves  131  includes a contact portion  1311  and a shielding portion  1312 . As shown in  FIG. 2 , the contact portion  1311  is located at the one end of the shielding groove  131 , and the shielding portion  1312  is located at the other end of the shielding groove  131  relative to the contact portion  1311 . In this embodiment, the shielding component  13  includes four shielding grooves  131  and three protruding structures  134 , and each of protruding structures  134  is between the two shielding grooves  131  respectively. In practice, number of the shielding groove  131  and protruding structure  134  of the shielding component  13  is not limited hereto, the number of the shielding groove  131  and protruding structure  134  also can be determined according to design or requirement. 
     In this embodiment, the number and position of the ground pads  112  of the circuit board  11  are corresponding to those of the protruding structures  134  of the shielding component  13 , and the protruding structures  134  of the shielding component  13  are electrically connected to the ground pads  112  of the circuit board  11  respectively. As shown in  FIG. 2 , the circuit board  11  of the electrical connector  1  includes five ground pads  112 , and the first sidewall  133 A, the second sidewall  133 B and the protruding structures  134  of the shielding component  13  are electrically connected to the ground pads respectively to make the shielding component  13  being grounded. In practice, the material of the shielding component  13  can be selected from metal, conductive plastic or other conductive materials. Furthermore, the first sidewall  133 A, the second sidewall  133 B and protruding structure  134  of the shielding component  13  can be fixed on the circuit board  11  and electrically connected to the ground pads  112  by welding, riveting, snapping to make the shielding component  13  being grounded. Since the first sidewall  133 A, the second sidewall  133 B and protruding structure  134  of the shielding component  13  are grounded and the top portion  132  of the shielding component  13  is connected to the first sidewall  133 A, the second sidewall  133 B and protruding structure  134 , the shielding grooves  131  of the shielding component  13  have electromagnetic shielding function. 
     Please refer to  FIG. 1  to  FIG. 4 .  FIG. 3  is a sectional diagram illustrating the circuit board  11 , the cables  12  and the shielding component  13  in one perspective view of  FIG. 1 .  FIG. 4  is a sectional diagram illustrating the circuit board  11 , the cables  12  and the shielding component  13  in another perspective view of  FIG. 1 . As shown in  FIG. 2 ,  FIG. 3  and  FIG. 4 , in this embodiment, the electrical connector  1  includes four cables  12 , and each of cables  12  includes a first wire core  121 A and a second wire core  121 B. The number of the shielding groove  131  of the shielding component  13  is corresponding to that of cables  12 , and the first sidewall  133 A, the second sidewall  133 B and protruding structure  134  of the shielding component  13  are electrically connected to the ground pads  112 . Moreover, the circuit board  11  includes a first conductive pad  111 A and a second conductive pad  111 B between each two ground pads  112 . 
     When the electrical connector  1  is assembled, the first wire core  121 A and the second wire core  121 B of the cable  12  are fixed to the first conductive pad  111 A and the second conductive pad  111 B respectively. The shielding component  13  is configured above the cable  12  and first sidewall  133 A, the second sidewall  133 B and the protruding structures  134  of the shielding component  13  are fixed on the ground pads  112  of the circuit board  11 . At this time, the position of the shielding groove  131  of the shielding component  13  is corresponding to that of the cable  12 . The first conductive pad  111 A and the second conductive pad  111 B of the circuit board  11  and the first wire core  121 A and the second wire core  121 B of the cable  12  are located in the same shielding groove  131 . Furthermore, the wall surface  1313  of the contact portion  1311  of the shielding groove  131  is contacted to the shielding layer  123  of the cable  12 , and the shielding portion  1312  of the shielding component  13  covers the first wire core  121 A and the second wire core  121 B of the cable  12  and the first conductive pad  111 A and the second conductive pad  111 B of the circuit board  11 , to provide electromagnetic shielding to the first wire core  121 A and the second wire core  121 B of the cable  12 . 
     In practice, the shielding component  13  is connected to the ground pad  112  of the circuit board  11 , and the contact portion  1311  of the shielding groove  131  of the shielding component  13  is contacted to the shielding layer  123  of the cable  12 . That is to say, the shielding layer  123  of the cable  12  can be electrically connected to the ground pad  112  through the shielding component  13 . The shape of the contact portion  1311  of the shielding groove  131  can be corresponding to that of the shielding layer  123  of the cable  12 . When all the shielding grooves  131  contact the shielding layers  123  of the cables  12  respectively, the shielding grooves  131  can connect the shielding layers  123  of all the cables  12  in series through the contact portions  1311  to be grounded. Therefore, the electrical connector of the present invention can enhance the electromagnetic shielding effect of the cables through the shielding component, thereby improving the efficiency. 
     Moreover, when the electrical connector  1  is assembled, the cables  12  are disposed in the shielding grooves  131  respectively. In other words, the protruding structure  134  is located between each two adjacent cables  12 . In practice, when the cables  12  are the high frequency differential signal cables, the protruding structure  134  of the shielding component  13  can shield the two cables  12  located in the adjacent two shielding grooves  131  to prevent crosstalk between the cables inside the electrical connector, and can replace the ground wire of the cable, thereby improving efficiency and saving cost. Furthermore, when the electrical connector  1  is assembled, the shielding component  13  contacts the shielding layer  123  of the cable  12  and covers the wire core  121  of the cable  12 . Therefore, the electrical connector of the present invention also can effectively block the electromagnetic interference of other electrical components outside the electrical connector, thereby improving the transmission quality and efficiency. 
     The connection manner of the first sidewall, the second sidewall and the protruding structure of the shielding component and the ground pad of the circuit board can be other types. In one embodiment, the lengths of the first sidewall and the second sidewall of the shielding component are smaller than the lengths of the protruding structures, and the protruding structures of the shielding component are connected to the ground pads of the circuit board. In practice, when the protruding structures of the shielding component are connected to the ground pads of the circuit board, the shielding component has electromagnetic shielding function. That is to say, the first sidewall and the second sidewall that not connected to the ground pad of the circuit board still have electromagnetic shielding function. In another one embodiment, the lengths of the first sidewall and the second sidewall of the shielding component are greater than the lengths of the protruding structures, and the first sidewall and the second sidewall are connected to the ground pads of the circuit. In practice, when the first sidewall and the second sidewall are connected to the ground pads of the circuit, the shielding component has electromagnetic shielding function. Furthermore, the protruding structures that not connected to the ground pad of the circuit board still have electromagnetic shielding function. Therefore, the protruding structures of the shielding component can prevent crosstalk among the cables. 
     In addition, in one embodiment, the top portion of the shielding component further includes a plurality of grooves opposite to the plurality of shielding grooves, and the cables can configured in the grooves of the shielding component. In practice, when the electrical connector is designed to include upper and lower layers of cables, the cables in the lower layer can be attached to the circuit board, and the shielding grooves of the shielding component can be configured on the cables in the lower layer. Then, the wire core of the cable on the upper layer is soldered to the circuit board, and the shielding layer of the cable can further be configured and contacted the groove of the shielding component. Therefore, the shielding component not only can prevent the crosstalk between the cables of the same layer through the shielding groove, but also prevent the interference between the cables of different layers through the groove, so that the cables to be arranged neatly and not easily entangled to save space. The number of the groove can be corresponding to that of the cables of the upper layer. 
     In addition to the ground component of the circuit board can be the ground pad described in the aforementioned embodiment, the ground component also can be in other forms. In one embodiment, the ground component is a ground layer, and the shielding component is electrically connected to the ground layer. In practice, the circuit board can be a multi-layer printed circuit board, and the ground layer can be configured in the circuit board. The layers other than the ground layer of the circuit board may be formed a plurality of holes by etching, and the positions of the holes can be corresponding to the positions of the sidewalls of the shielding component. When the shielding component is configured on the circuit board, the sidewalls of the shielding component can pass through the holes and be connected to the ground layer of the circuit board by riveting and snapping, so that the shielding component is grounded and has shielding function. Similarly, the positions of the holes of the circuit board further can be corresponding to the positions of the sidewall of the shielding component. The protruding structures of the shielding component can pass through the holes and be connected to the ground layer of the circuit board by riveting and snapping. 
     In addition to the shielding component can be the structure described in the aforementioned embodiment, the ground component also can be in other forms. Please refer to  FIG. 5A  and  FIG. 5B .  FIG. 5A  is a structure schematic diagram illustrating the shielding component  23  according to an embodiment of the present invention.  FIG. 5B  is a sectional diagram illustrating the shielding component  23 , the circuit board  21  and the cables  22  in one perspective view of  FIG. 5A . As shown in  FIG. 5A , the difference between this embodiment and the aforementioned embodiment is that the shielding component  23  of this embodiment further includes a plurality of rib structures  235 . The rib structures  235  are configured on the contact portion  2311  of the shielding component  23  and located in the shielding grooves  231  respectively. In practice, the shape of the rib structure  235  can be square shape, rectangle shape or arc shape. The rib structures  235  can be integrally formed on the shielding component  23  or can be configured on the shielding component  23  by stamping. When the electrical connector is assembled, the rib structure  235  of the shielding component  23  contacts the shielding layer  223  of the cable  22  to provide electromagnetic shielding to the cable  22 . In this embodiment, rib structures  235  are located at the top portion of the shielding component  23 , but it is not limited hereto, the rib structures  235  also can be located at the sidewall of the contact portion  2311  or on the protruding structure. The electrical connector may include cables with different wire diameters due to design or requirements. Therefore, the shielding component of the electrical connector of the present invention can contact the shielding layer of the cable with the smaller wire diameter through the rib structures to improve the shielding efficiency. 
     Please refer to  FIG. 6A  and  FIG. 6B .  FIG. 6A  is a structure schematic diagram illustrating the shielding component  33  according to another one embodiment of the present invention.  FIG. 6B  is a sectional diagram illustrating the shielding component  33 , the circuit board  31  and the cables  32  in one perspective view of  FIG. 6A . As shown in  FIG. 6A , the difference between this embodiment and the aforementioned embodiment is that the shielding component  33  of this embodiment further includes a plurality of elastic structures  335 . The elastic structure  335  is configured on the contact portion  3311  of the shielding groove  331  and extended from wall surface toward the shielding groove  331 . In practice, the elastic structure  335  can be an elastic arm, and the elastic arm can be formed on the shielding component  33  by stamping. Since the electrical connector may include cables with different wire diameters due to design or requirements, the elastic structure  335  located at the shielding groove  331  can contact the shielding layer  323  of the cable  32  with the smaller wire diameter to provide electromagnetic shielding to the cable  32  when the electrical connector is assembled. Furthermore, the cable  32  with the larger wire diameter can compress the elastic structure  335  of the shielding component  33 , then the elastic structure  335  resists and contacts the shielding layer  323  of the cable  32  according to the elastic force generated by compressed to provide electromagnetic shielding to the cable  32 . Therefore, the shielding component of the electrical connector of the present invention can contact the shielding layer of the cable with the smaller wire diameter through the elastic structures to improve the shielding efficiency. 
     Please refer to  FIG. 7A  and  FIG. 7B .  FIG. 7A  is a structure schematic diagram illustrating the shielding component  43  according to an embodiment of the present invention.  FIG. 7B  is an assembly diagram illustrating the shielding component  43 , the circuit board  41  and the cables  42  in  FIG. 7A . As shown in  FIG. 7A  and  FIG. 7B , in this embodiment, the shielding portion  4312  of the shielding component  43  further includes a plurality of separating structures  436  configured in the shielding grooves  431  respectively. Each of the separating structures  436  is configured on the end of the shielding component  43  close to the wire core  421  of the cable  42 . The shape of the separating structure  436  can be corresponding to that of the wire core  421  of the cable  42 . When the shielding component  43  is configured on the circuit board  41 , the shielding portion  4312  of the shielding component  43  can cover and separate the two wire cores  421  of the cables  42  by separating structures  436  to provide electromagnetic shielding between the wire cores  421  of the cables  42 , thereby increasing shielding efficiency. 
     Please refer to  FIG. 8A  and  FIG. 8B .  FIG. 8A  is a structure schematic diagram illustrating the shielding component  53  according to an embodiment of the present invention.  FIG. 8B  is a sectional diagram illustrating the shielding component  53 , the circuit board  51  and the cables  52  in one perspective view of  FIG. 8A . As shown in  FIG. 8A  and  FIG. 8B , the difference between this embodiment and the aforementioned embodiment is that the shielding component  33  of this embodiment further includes a third sidewall  533 C configured on the shielding portion  5312  and connected to the shielding grooves  531 . In practice, the third sidewall  533 C can be configured on the end of the shielding component  53  and cover one end of the opening of the shielding grooves  531 . Moreover, the third sidewall  533 C can be configured on one end of the shielding component  53  close to the wire core  521  of the cable  52 . The third sidewall  533 C can be connected to the first sidewall  533 A and the second sidewall  533 B of the shielding component  53 , also can be connected to the protruding structures  534 . When the shielding component  53  is configured on the circuit board  51 , the shielding portion  5312  of the shielding component  53  can completely cover the wire core  521  of the cable  52  and the shielding component  53  not contacts the wire core  521  to provide electromagnetic shielding to the cable  52 , thereby increasing shielding efficiency. 
     In summary, the electrical connector with electromagnetic shielding function of the present invention can cover the wire core of the cable and contact the shielding layer of the cable at the same time by the shielding component to provide the electromagnetic shielding, thereby increasing efficiency. Furthermore, the electrical connector of the present invention can separate the two adjacent cables and generate electromagnetic shielding through the protruding structures of the shielding component, to prevent crosstalk between cables inside electrical connectors, thereby increasing the electromagnetic shielding efficiency. Moreover, the shielding component of the electrical connector of the present invention can contact the shielding layer of the cable in different ways to adapt to cables with different wire diameters, thereby improving the efficiency. In addition, the electrical connector of the present invention can cover the wire core and the shielding layer of the cable to prevent the cables of the electrical connector from being electromagnetically interfered by other external electronic components, thereby improving the transmission quality and efficiency. 
     With the examples and explanations mentioned above, the features and spirits of the invention are hopefully well described. More importantly, the present invention is not limited to the embodiment described herein. Those skilled in the art will readily observe that numerous modifications and alterations of the device may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.