Patent Publication Number: US-2022231464-A1

Title: Electrical connector

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the priority benefit of Chinese Patent Application Serial Number 202110065322.4, filed on Jan. 18, 2021, the full disclosure of which is incorporated herein by reference. 
     BACKGROUND 
     Technical Field 
     The present disclosure relates to the technical field of connector, particularly to an electrical connector. 
     Related Art 
     For pursing excellent signal transmission performance for conventional electrical connectors, electromagnetic shielding members are often installed to the electrical connectors to electromagnetically shield the plurality of signal terminals of electrical connectors and to effectively improve the signal transmission performance of electrical connectors. However, conventional electrical connectors are mostly formed on the insulating body or terminal module of the electrical connectors by means of secondary molding, which increases the complexity for production with low arbitrarily for replacing, resulting in inconvenience of use. 
     SUMMARY 
     The embodiments of the present disclosure provide an electrical connector tended to solve the problem that conventional electromagnetic shielding members are formed on the insulating body or terminal module of the electrical connectors by means of secondary molding that increases the complexity for production with low arbitrarily for replacing, resulting in inconvenience of use. 
     The present disclosure provides an electrical connector, comprising an insulating body, a first terminal module, a second terminal module, and an electromagnetic shielding component. The insulating body comprises a first surface, a second surface, a terminal accommodating groove, a plurality of first terminal plugging slots, and a plurality of second terminal plugging slots. The first surface and the second surface are oppositely disposed and are disposed in a first direction. The plurality of first terminal plugging slots and the second terminal plugging slots are disposed at intervals at one side of the terminal accommodating groove along a second direction orthogonal to the first direction. The first terminal module comprises a plurality of first signal terminals, a plurality of first ground terminals, and a first terminal insulating body. The first terminal insulating body covers a part of the plurality of first signal terminals and the plurality of first ground terminals. The first terminal insulating body is disposed in the terminal accommodating groove. The second terminal module comprises a plurality of second signal terminals and a plurality of second ground terminals. The plurality of second signal terminals are respectively assembled in the plurality of first terminal plugging slots. The plurality of second ground terminals are respectively assembled in the plurality of second terminal plugging slots. The electromagnetic shielding component is disposed at the insulating body or/and at the first terminal insulating body. The electromagnetic shielding component is in contact with the plurality of first ground terminals and the plurality of second ground terminals. 
     In the embodiments of the present disclosure, by disposing the electromagnetic shielding component in the insulating body or/and the first terminal insulating body of the first terminal module in a physical mounting manner, the assembling can be easy and the complexity of manufacturing can be reduced. Meanwhile, the electromagnetic shielding components can be arbitrarily replaced, which greatly improves the convenience of use. 
     It should be understood, however, that this summary may not contain all aspects and embodiments of the present disclosure, that this summary is not meant to be limiting or restrictive in any manner, and that the disclosure as disclosed herein will be understood by one of ordinary skill in the art to encompass obvious improvements and modifications thereto. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The features of the exemplary embodiments believed to be novel and the elements and/or the steps characteristic of the exemplary embodiments are set forth with particularity in the appended claims. The Figures are for illustration purposes only and are not drawn to scale. The exemplary embodiments, both as to organization and method of operation, may best be understood by reference to the detailed description which follows taken in conjunction with the accompanying drawings in which: 
         FIG. 1  is a perspective view of an electrical connector of the first embodiment of the present disclosure; 
         FIG. 2  is an exploded view of the electrical connector of the first embodiment of the present disclosure; 
         FIG. 3  is a rear view of the electrical connector of the first embodiment of the present disclosure; 
         FIG. 4  is a cross-sectional view along line A-A′ of  FIG. 1 ; 
         FIG. 5  is a perspective view of a first terminal module assembled with a first electromagnetic shielding member of the first embodiment of the present disclosure; 
         FIG. 6  is a cross-sectional view along line B-B′ of  FIG. 1 ; 
         FIG. 7  is a cross-sectional view along line C-C′ of  FIG. 3 ; 
         FIG. 8  is a cross-sectional view along line D-D′ of  FIG. 3 ; 
         FIG. 9  is a cross-sectional view along line E-E′ of  FIG. 3 ; 
         FIG. 10  is a cross-sectional view along line F-F′ of  FIG. 6 ; 
         FIG. 11  is a cross-sectional view along line G-G′ of  FIG. 1 ; 
         FIG. 12  is a cross-sectional view along line H-H′ of  FIG. 1 ; 
         FIG. 13  is a front view of the electrical connector of the first embodiment of the present disclosure; 
         FIG. 14  is a cross-sectional view along line I-I′ of  FIG. 1 ; 
         FIG. 15  is a perspective view of an electrical connector of the second embodiment of the present disclosure; 
         FIG. 16  is a cross-sectional view along line J-J′ of  FIG. 15 ; 
         FIG. 17  is a cross-sectional view of an electrical connector of the third embodiment of the present disclosure; 
         FIG. 18  is a cross-sectional view of an electrical connector of the fourth embodiment of the present disclosure; 
         FIG. 19  is a cross-sectional view of an electrical connector of the fifth embodiment of the present disclosure; and 
         FIG. 20  is a cross-sectional view of an electrical connector of the sixth embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     The present disclosure will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are shown. This present disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art. 
     Certain terms are used throughout the description and following claims to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This document does not intend to distinguish between components that differ in name but function. In the following description and in the claims, the terms “include/including” and “comprise/comprising” are used in an open-ended fashion, and thus should be interpreted as “including but not limited to”. “Substantial/substantially” means, within an acceptable error range, the person skilled in the art may solve the technical problem in a certain error range to achieve the basic technical effect. 
     The following description is of the best-contemplated mode of carrying out the disclosure. This description is made for the purpose of illustration of the general principles of the disclosure and should not be taken in a limiting sense. The scope of the disclosure is best determined by reference to the appended claims. 
     Moreover, the terms “include”, “contain”, and any variation thereof are intended to cover a non-exclusive inclusion. Therefore, a process, method, object, or device that includes a series of elements not only includes these elements, but also includes other elements not specified expressly, or may include inherent elements of the process, method, object, or device. If no more limitations are made, an element limited by “include a/an . . . ” does not exclude other same elements existing in the process, the method, the article, or the device which includes the element. 
     The electrical connector of the present disclosure includes an insulating body, a first terminal module, a second terminal module, and an electromagnetic shielding component. The first terminal module and the second terminal module are disposed in the insulating body. The electromagnetic shielding component is disposed at the insulating body or/and at the first terminal module. The electromagnetic shielding component can be connected with a plurality of ground terminals of the first terminal module and a plurality of ground terminals of the second terminal module, so that the electromagnetic shielding component can electromagnetically shield the plurality of signal terminals of the first terminal module and the plurality of signal terminals of the second terminal module. Embodiments are provided below to illustrate the detailed configuration of the electrical connector for the present disclosure. 
       FIG. 1  to  FIG. 3  are perspective view, exploded view, and rear view of an electrical connector of the first embodiment of the present disclosure.  FIG. 4  is a cross-sectional view along line A-A′ of  FIG. 1 .  FIG. 5  is a perspective view of a first terminal module assembled with a first electromagnetic shielding member of the first embodiment of the present disclosure. As shown in the figures, in this embodiment, an electrical connector  1  comprises an insulating body  10 , a first terminal module  11 , a second terminal module  12 , a first electromagnetic shielding member  13 , and a second electromagnetic shielding member  14 . The insulating body  10  comprises a first surface  101 , a second surface  102 , a first plugging slot  103 , a second plugging slot  104 , a terminal accommodating groove  105 , a plurality of first terminal plugging slots  106   a , a plurality of second terminal plugging slots  106   b , a first electromagnetic shield accommodating groove  107 , and a plurality of electromagnetic shield contacting grooves  108 . The first surface  101  is opposite to the second surface  102  along the first direction X. The first plugging slot  103  is disposed on the first surface  101  and extends along the first direction X. The first plugging slot  103  forms a first opening  1031  on the first surface  101 . The second plugging slot  104  is disposed on the second surface  102  and extends along the first direction X. The second plugging slot  104  forms a second opening  1041  on the second surface  102 . The terminal accommodating groove  105  is disposed between the first plugging slot  103  and the second plugging slot  104 . The terminal accommodating groove  105  extends along the first direction X and respectively communicates with the first plugging slot  103  and the second plugging slot  104 . 
     The plurality of first terminal plugging slots  106   a  and the plurality of second terminal plugging slots  106   b  are disposed between the first plugging slot  103  and the second plugging slot  104  at intervals along a second direction Y orthogonal to the first direction X. The plurality of first terminal plugging slots  106   a  and the plurality of second terminal plugging slots  106   b  extend along the first direction X and respectively communicate with the first plugging slot  103  and the second plugging slot  104 . The plurality of first terminal plugging slots  106   a  and the plurality of second terminal plugging slots  106   b  are disposed at one side of the terminal accommodating groove  105 . In this embodiment, the plurality of first terminal plugging slots  106   a  and the plurality of second terminal plugging slots  106   b  are disposed on the lower side of the terminal accommodating groove  105 . Two first terminal plugging slots  106   a  exists between two second terminal plugging slots  106   b . A first electromagnetic shield accommodating groove  107  is disposed between the terminal accommodating groove  105 , the plurality of first terminal plugging slots  106   a , and the plurality of second terminal plugging slots  106   b  along the second direction Y. The first electromagnetic shield accommodating groove  107  extends along the first direction X and communicates with the second plugging slot  104 . A plurality of electromagnetic shield contacting grooves  108  are disposed between the terminal accommodating groove  105 , the plurality of first terminal plugging slots  106   a , and the plurality of second plugging terminal slots  106   b  along the second direction Y at intervals. The plurality of electromagnetic shield contacting grooves  108  communicate with the second plugging slot  104 . The plurality of electromagnetic shield contacting grooves  108  are respectively communicated with the first electromagnetic shield accommodating groove  107  and the plurality of second terminal plugging slots  106   b.    
     As shown in  FIG. 5 , the first terminal module  11  comprises a plurality of first signal terminals  111 , a plurality of first ground terminals  112 , and a first terminal insulating body  113 . The plurality of first signal terminals  111  and the plurality of first ground terminals  112  are disposed along the second direction Y at intervals. Two first signal terminals  111  exist between two first ground terminals  112 .  FIG. 6  is a cross-sectional view along line B-B′ of  FIG. 1 . As shown in the figure, the first terminal insulating body  113  covers a part of the plurality of first signal terminals  111  and the plurality of first ground terminals  112 . A surface of the first terminal insulating body  113  in a third direction Z comprises a plurality of first hollow parts  1131 . The plurality of first ground terminals  112  are exposed from the first hollow parts  1131 . Referring to  FIG. 4 , the first terminal insulating body  113  of the first terminal module  11  is disposed in the terminal accommodating groove  105 . One ends of the plurality of first signal terminals  111  and one ends of the plurality of first ground terminals  112  enter the first plugging slot  103 . The other ends of the plurality of first signal terminals  111  and the other ends of the plurality of first ground terminals  112  are disposed in the second plugging slot  104 . 
     Referring to  FIG. 2 ,  FIG. 4 , and  FIG. 6 , the second terminal module  12  comprises a plurality of second signal terminals  121  and a plurality of second ground terminals  122 . The plurality of second signal terminals  121  are respectively assembled in the plurality of first terminal plugging slots  106   a . One ends of the plurality of second signal terminals  121  enter the first plugging slot  103  through the plurality of first terminal plugging slots  106   a . The other ends of the plurality of second signal terminals  121  are disposed in the second plugging slot  104 . The plurality of second ground terminals  122  are respectively assembled in the plurality of second terminal plugging slots  106   b . One ends of the plurality of second ground terminals  122  enter the first plugging slot  103  through the plurality of second terminal plugging slots  106   b . The other ends of the plurality of second signal terminals  121  are disposed in the second plugging slot  104 . 
     Referring to  FIG. 4 ,  FIG. 5 , and  FIG. 6 , the first electromagnetic shielding member  13  is disposed at the first terminal insulating body  113  and is in contact with the plurality of first ground terminals  112 . The first electromagnetic shielding member  13  comprises a plurality of first contacting bumps  131  disposed at intervals. The plurality of first contacting bumps  131  extend along the third direction Z orthogonal to the first direction X and the second direction Y. The plurality of first contacting bumps  131  respectively enter the plurality of first hollow parts  1131 . The plurality of first contacting bumps  131  are respectively in contact with the plurality of first ground terminals  112 . The first electromagnetic shielding member  13  disposed at the two first contacting bumps  131  is in contact with the first terminal insulating body  113  disposed between the two first hollow parts  1131 . In this way, the first electromagnetic shielding member  13  could electromagnetically shield the plurality of first signal terminals  111 . Since the shape of the cross-sectional area of the first hollow part  1131  of this embodiment is identical to the shape of the cross-sectional area of the first contacting bump  131 , the plurality of first contacting bumps  131  of the first electromagnetic shielding member  13  can be stably engaged with the plurality of first hollow parts  1131 , respectively, which also indicates that the first electromagnetic shielding member  13  can be directly assembled to the first terminal insulating body  113 . The first electromagnetic shielding member  13  of this embodiment is wave-shaped. 
     In this embodiment, a surface of the first terminal insulating body  113  in the third direction Z comprises a first retaining part  1132 . The plurality of first hollow parts  1131  are disposed in the first retaining part  1132 . The first retaining part  1132  communicates with the plurality of first hollow parts  1131 . The first electromagnetic shielding member  13  is disposed in the first retaining part  1132 . In this way, the first electromagnetic shielding member  13  does not protrude from the surface of the first terminal insulating body  113  in the third direction Z. In this embodiment, the first electromagnetic shielding member  13  further comprises a plurality of first positioning bumps  132  respectively disposed between two adjacent first contacting bumps  131 . The plurality of first positioning bumps  132  extend along the first direction X. The surface of the first terminal insulating body  113  on the third direction Z further comprises a plurality of positioning recesses  1133 . The plurality of positioning recesses  1133  are respectively disposed between two adjacent first hollow parts  1131  and communicate with the first retaining part  1132 . The plurality of first positioning bumps  132  are respectively disposed in the plurality of positioning recesses  1133  to locate the position of the first electromagnetic shielding member  13  in the first recess  1132 . In this way, the plurality of first contacting bumps  131  can be accurately disposed in the plurality of first hollow parts  1131 , respectively. 
     Referring to  FIG. 2 ,  FIG. 4 , the second electromagnetic shielding member  14  comprises an electromagnetic shielding body  141  and a plurality of lower contacting elastic pieces  142 . The plurality of lower contacting elastic pieces  142  are disposed at one side of the electromagnetic shielding body  141  along the second direction Y at intervals. The electromagnetic shielding body  141  is disposed in the first electromagnetic shield accommodating groove  107 . The plurality of lower contacting elastic pieces  142  are respectively disposed in the plurality of electromagnetic shield contacting grooves  108 . The plurality of lower contacting elastic pieces  142  are respectively in contact with the plurality of second ground terminals  122  disposed in the plurality of electromagnetic shield contacting grooves  108 . In this way, the second electromagnetic shielding member  14  could electromagnetically shield the plurality of second signal terminals  121 . In this embodiment, the second electromagnetic shielding member  14  is also directly assembled to the insulating body  10 . Thus, in this embodiment, the first electromagnetic shielding member  13  and the second electromagnetic shielding member  14  electromagnetically shield the plurality of first signal terminals  111  of the first terminal module  11  and the plurality of second signal terminals  121  of the second terminal module  12 , respectively. 
     In this embodiment, the electrical connector  1  is a horizontal type electrical connector. The plurality of first signal terminals  111 , the plurality of first ground terminals  112 , the plurality of second signal terminals  121 , and the plurality of second ground terminals  122  are all presented in a bent shape. Referring to  FIG. 3 ,  FIG. 4 , and  FIG. 5 , a bottom surface of the insulating body  10  further comprises a notch  109 , which communicates with the second plugging slot  104 . The plurality of first signal terminals  111 , the plurality of first ground terminals  112 , the plurality of second signal terminals  121 , and a plurality of second ground terminals  122  in the second plugging slot  104  pass through the notch  109 . In this embodiment, the plurality of first signal terminals  111  and the plurality of first ground terminals  112  respectively comprise a first end part  114   a  and a second end part  114   b . The first end part  114   a  and the second end part  114  form an angle. The angle is smaller than 180 degrees. The first end part  114   a  extends in the first direction X, and the second end part  114   b  extends in the third direction Z. The first terminal insulating body  113  is disposed at the first end parts  114   a  of the plurality of first signal terminals  111  and the first end parts  114   a  of the plurality of first ground terminals  112 . In this embodiment, the first terminal module  11  further comprises a second terminal insulating body  115  disposed at the second end parts  114   b  of the plurality of first signal terminals  111  and the second end parts  114   b  of the plurality of first ground terminals  112 . A surface of the second terminal insulating body  115  in the first direction X further comprises a second hollow part  1151 . The plurality of first signal terminals  111  and the plurality of first ground terminals  112  are exposed from the second hollow part  1151 . The electrical connector  1  further comprises a third electromagnetic shielding member  15  which can be disposed in the second hollow part  1151 . The third electromagnetic shielding member  15  is in contact with the plurality of first ground terminals  112  so that the third electromagnetic shielding member  15  could electromagnetically shield the plurality of first signal terminals  111 . The configurational structure of the third electromagnetic shielding member  15  is identical to that of the first electromagnetic shielding member  13 , which would not be repeated herein. 
     Referring to  FIG. 2  and  FIG. 6 , in this embodiment, a surface of the terminal accommodating groove  105  in the third direction Z and close to the bottom surface of the insulating body  10  further comprises a plurality of first ribs  1051  disposed at intervals. When the first terminal insulating body  113  is disposed in the terminal accommodating groove  105 , the plurality of first ribs  1051  would support the first terminal insulating body  113  to reduce the area size that the surface of the first terminal insulating body  113  in the third direction Z and close to the bottom surface of the insulating body  10  contacting with the surface of the terminal accommodating groove  105  in the third direction Z and close to the bottom surface of the insulating body  10 . In this way, the first terminal insulating body  113  can be easily installed in the terminal accommodating groove  105 . 
     In this embodiment, a surface of the first terminal insulating body  113  in the third direction Z and away from the bottom surface of the insulating body  10  further comprises a plurality of second ribs  1134  disposed at intervals. When the first terminal insulating body  113  is disposed in the terminal accommodating groove  105 , the plurality of second ribs  1134  would be in contact with a surface of the terminal accommodating groove  105  in the third direction Z and away from the bottom surface of the insulating body  10  to reduce the area size that the surface of the first terminal insulating body  113  in the third direction Z and away from the bottom surface of the insulating body  10  contacting with the surface of the terminal accommodating groove  105  in the third direction Z and away from the bottom surface of the insulating body  10 . In this way, the first terminal insulating body  113  can be easily installed in the terminal accommodating groove  105 . 
     Referring to  FIG. 2 ,  FIG. 3 , and also  FIG. 7 , a cross-sectional view along line C-C′ of  FIG. 3 . In this embodiment, two opposite sides of the first terminal insulating body  113  in the second direction Y are respectively provided with an elastic arm  116 . One end of the elastic arm  116  is disposed at the first terminal insulating body  113 . The elastic arm  116  extends in a direction away from one ends of the plurality of first signal terminals  111  and one ends of the plurality of first ground terminals  112  and extends along the first direction X. The other end of the elastic arm  116  is a movable end. A gap exists between the elastic arm  116  and the first terminal insulating body  113 . The other end of the elastic arm  116  is provided with a buckling bump  1161 . The buckling bump  1161  extends in a direction away from the first terminal insulating body  113  along the second direction Y. Two opposite inner surfaces of the insulating body  10  in the second direction Y respectively comprises a guiding groove  100 , and the guiding groove  100  extends from the second surface  102  to the terminal accommodating groove  105  along the first direction X, which indicates that the guiding groove  100  is disposed on an inner surface of the second plugging slot  104  and an inner surface of the terminal accommodating groove  105  in the second direction Y. An inner surface of the guiding groove  100  in the second direction Y comprises a buckling through hole  1001 . When the first terminal insulating body  113  is moved into the terminal accommodating groove  105  from the second plugging slot  104 , the two elastic arms  116  would respectively enter the terminal accommodating groove  105  along the corresponding guiding groove  100 . The buckling bump  1161  of the elastic arm  116  is disposed in the buckling through hole  1001 . A surface of the buckling bump  1161  in the first direction X and close to the second plugging slot  104  abuts against a sidewall of the buckling through hole  1001  in the first direction X and close to the second plugging slot  104 . In this way, the first terminal insulating body  113  can be prevented from being detached from the second plugging slot  104 , thereby further preventing the first terminal module  11  from being detached from the second plugging slot  104 . 
     Referring to  FIG. 2 ,  FIG. 3 , and also  FIG. 8 , a cross-sectional view along line D-D′ of  FIG. 3 . In this embodiment, two opposite sidewalls of the second plugging slot  104  in the second direction Y respectively comprise a limiting groove  1042 . Two opposite sides of the second terminal insulating body  115  in the second direction Y are provided with a limiting bump  1152 . When the second terminal insulating body  115  is disposed in the second plugging slot  104 , the limiting bump  1152  would be disposed in the corresponding limiting groove  1042 . A surface of the limiting bump  1152  in the third direction Z and away from the bottom surface of the insulating body  10  limits a surface of the limiting groove  1042  in the third direction Z and away from the bottom surface of the insulating body  10 . In this way, the location of the second terminal insulating body  115  in the second plugging slot  104  can be positioned. 
     Referring to  FIG. 1 ,  FIG. 2 ,  FIG. 3 , and  FIG. 4 , in this embodiment, the electrical connector  1  further comprises a housing  16  disposed at one side of the insulating body  10 . The housing  16  covers a top surface of the insulating body  10  and two opposite side surfaces in the second direction Y. The bottom surface of the insulating body  10  is exposed from the housing  16 . The top surface of the insulating body  10  comprises a first positioning notch  110   a  and two second positioning notches  110   b . The two second positioning notches  110   b  are disposed at two sides of the first positioning notch  110   a . The two second positioning notches  110   b  are respectively communicated with the first positioning notch  110   a . The first positioning notch  110   a  and the two second positioning notches  110   b  form a plurality of positioning parts with the housing  16 . The two second positioning notches  110   b  are in an inverted L-type shape. The two second positioning notches  110   b  respectively form an inverted L-shaped positioning part with the housing  16 . The plurality of positioning parts are configured to be connected with a mating connector so that the mating connector and the electrical connector  1  can be accurately connected. 
     The housing  16  comprises a first side  16   a  and a second side  16   b  opposite to the first side  16   a . The first side  16   a  corresponds to the first pugging slot  103  of the insulating body  10 , and the second side  16   b  corresponds to the second plugging slot  104  of the insulating body  10 .  FIG. 9  is a cross-sectional view along line E-E′ of  FIG. 3 . As shown in the figure, a top surface of the housing  16  in the first direction X and close to the second side  16   b  further comprises a plurality of positioning pieces  161 . A sidewall of the first positioning notch  110   a  in the first direction X close to the second surface  102  further comprises a plurality of positioning plug holes  1101  arranged at intervals. The plurality of positioning plug holes  1101  extend along the first direction. When the housing  16  is disposed at one side of the insulating body  10 , the plurality of positioning pieces  161  would be respectively inserted into the plurality of positioning plug holes  1101  to locate the position of the housing  16  relative to the insulating body  10 . In this embodiment, the positioning piece  161  is L-shaped and comprises a first positioning piece body  161   a  and a second positioning piece body  161   b  connected with the first positioning piece body  161   a . The first positioning piece  161   a  extends along the third direction Z. One end of the first positioning piece  161   a  away from the second positioning piece  161   b  is connected with the top surface of the housing  16 . The second positioning piece  161   b  extends along the first direction X. The first positioning piece  161   a  enables the second positioning piece  161   b  to go deep into the first positioning notch  110   a . The second positioning piece  161   b  is inserted into the positioning plug hole  1101 . 
       FIG. 10  is a cross-sectional view along line F-F′ of  FIG. 6 . In this embodiment, as shown in the figure, a side edge of the top surface of the housing  16  in the first direction X and close to the second side  16   b  further comprises a plurality of first buckling pieces  162 . The plurality of first buckling pieces  162  comprise a buckling hole  1621 . The top surface of the insulating body  10  further comprises a plurality of first buckling grooves  1102  and a plurality of buckling blocks  1103  disposed at intervals. The plurality of first buckling grooves  1102  extend along the third direction Z and communicate with the first positioning notch  110   a . The plurality of buckling blocks  1103  are respectively disposed on a surface of the plurality of first buckling grooves  1102  in the third direction Z. When the housing  16  is disposed at one side of the insulating body  10 , the plurality of first buckling pieces  162  would be respectively disposed in the plurality of first buckling grooves  1102 . The plurality of buckling blocks  1103  are respectively disposed in the buckling holes  1621  of the plurality of first buckling pieces  162 . The buckling block  1103  limits the first buckling piece  162  only to move in the first direction X and the second direction Y to secure the housing  16  on the insulating body  10 . In this embodiment, the first buckling piece  162  is L-shaped. The first buckling piece  162  comprises a first buckling piece body  162   a  and a second buckling piece body  162   b  connected with the first buckling piece body  162   a . The first buckling piece body  162   a  extends along the third direction Z. One end of the first buckling piece body  162   a  away from the second buckling piece body  162   b  is connected with the top surface of the housing  16 . The second buckling piece body  162   b  extends along the first direction X. The buckling hole  1621  is disposed on the second buckling piece body  162   b . The first buckling piece body  162   a  enables the second buckling piece body  162   b  to be inserted into the first positioning notch  110   a . The second buckling piece body  162   b  is disposed in the first buckling groove  1102 . The buckling block  1103  is disposed in the buckling hole  1621 . 
       FIG. 11  is a cross-sectional view along line G-G′ of  FIG. 1 .  FIG. 12  is a cross-sectional view along line H-H′ of  FIG. 1 . In this embodiment, as shown in the figures, a side edge of the top surface of the housing  16  in the first direction X and close to the first side  16   a  further comprises two second buckling pieces  163 . The two second buckling pieces  163  are inverted C-shaped or U-shaped, and respectively comprise a first connecting end  163   a  and a buckling end  163   b . The first connecting end  163   a  is disposed on a side edge of the top surface of the housing  16  in the first direction X and close to the first side  16   a . The buckling end  163   b  is disposed in the housing  16 . The first surface  101  of the insulating body  10  further comprises two second buckling grooves  1011 . The two second buckling grooves  1011  are respectively disposed between the first positioning notch  110   a  and the second positioning notch  110   b . The two second buckling grooves  1011  respectively extend along the first direction X. When the housing  16  is disposed at one side of the insulating body  10 , the buckling ends  163   b  of the two second buckling pieces  163  would be respectively inserted into the two second buckling grooves  1011 , and the two second buckling pieces  163  would abut against the first surface  101  of the insulating body  10 . In this way, the housing  16  can be prevented from being detached from the insulating body  10  in a direction away from the first opening  1031 . In this embodiment, two opposite sides of the second buckling piece  163  further comprise an interfering part  1631 , respectively. The interfering part  1631  is close to the buckling end  163   b  and interferes with a sidewall of the second buckling groove  1011  so that the second buckling piece  163  would not be easily detached from the second buckling groove  1011 . 
     In this embodiment, the side edge of the top surface of the housing  16  in the first direction X and close to the first side  16   a  further comprises a latching tab  164  disposed between the two second buckling pieces  163 . The latching tab  164  protrudes from a side edge of the top surface of the housing  16  in the first direction X and close to the first side  16   a  along the first direction X. The latching tab  164  is configured to be connected with the mating connector to secure the electrical connector  1  to the mating connector. In this embodiment, the latching tab  164  further comprises two latching holes  1641 . 
     Referring to  FIG. 1 , and  FIG. 13 , a front view of the electrical connector of the first embodiment of the present disclosure, in this embodiment, the bottom surface of the insulating body  10  further comprises two limiting recesses  1002  respectively close to two side surfaces of the housing  16 . The two limiting recesses  1002  extend along the first direction X from the first surface  101  of the insulating body  10  to the second surface  102  of the insulating body  10 . Side edges of the two side surfaces of the housing  16  in the third direction Z and away from the top surface of the housing  16  further comprise a limiting piece  165 . In this embodiment, the limiting piece  165  is U-shaped or C-shaped, and comprises a second connecting end  165   a  and a limiting end  165   b . The second connecting end  165   a  is disposed at side edges of the two side surfaces of the housing  16  in the third direction Z and away from the top surface of the housing  16 . The limiting end  165   b  is disposed in the housing  16 . When the housing  16  is disposed at one side of the insulating body  10 , the limiting end  165   b  of the limiting piece  165  would be disposed in the limiting recess  1002 . The limiting end  165   b  of the limiting piece  165  abuts against a sidewall of the limiting recess  1002  in the first direction X to prevent the housing  16  from detaching along the first direction X, towarding the first surface  101 . Meanwhile, the limiting piece  165  abuts against the bottom surface of the insulating body  10  to prevent the housing  16  from detaching along the third direction Z, away from the top surface of the insulating body  10 . 
     Referring to  FIG. 1 ,  FIG. 2 , and  FIG. 14 , a cross-sectional view along line I-I′ of  FIG. 1 . In this embodiment, two opposite side surfaces of the insulating body  10  in the second direction Y further comprises a guiding recess  1003 , respectively. The guiding recess  1003  extends from the first surface  101  of the insulating body  10  to the second surface  102  of the insulating body  10  along the first direction X. Two side surfaces of the housing  16  further comprise a guiding bump  166 , respectively. The guiding bump  166  protrude in a direction toward the inner side of the housing  16 . In this embodiment, when the housing  16  is disposed at one side of the insulating body  10 , the guiding bump  166  would move along the guiding recess  1003  to drive the housing  16  to move to a predetermined position. A surface of the guiding bump  166  in the first direction X and close to the second surface  102  limits the surface of the guiding groove  1003  in the first direction X and close to the second surface  102  to prevent the housing  16  from detaching along the first direction X and along the direction close to the first surface  101 . 
     In this embodiment, two opposite side surfaces of the insulating body  10  in the second direction Y respectively comprise a positioning groove  1004 . The positioning groove  1004  is closer than the guiding recess  1003  to the second surface  102 . The positioning groove  1004  extends from the bottom surface of the insulating body  10  to the top surface of the insulating body  10  along the third direction Z. The positioning groove  1004  further comprises an abutting inclined surface  10041  and a limiting surface  10042  in the first direction X. The limiting surface  10042  is farther than the abutting inclined surface  10041  away from the second surface  102 . Two side surfaces of the housing  16  further comprise a retaining hole  167  and a limiting elastic piece  168 , respectively. One end of the limiting elastic piece  168  is connected with a side edge of the retaining hole  167  in the first direction X and close to the second surface  102 . The limiting elastic piece  168  extends along the first direction X. The other end of the limiting elastic piece  168  can move in the retaining hole  167 . The limiting elastic piece  168  is inclined toward the inside of the housing  16  relative to a side surface of the housing  16 . When the housing  16  of this embodiment is disposed at one side of the insulating body  10 , the limiting elastic piece  168  would abut against the abutting inclined surface  10041 . The other end of the limiting elastic piece  168  corresponds to the limiting surface  10042 . The elastic force of the two limiting elastic pieces  168  in the second direction Y is applied to clamp the insulating body  10  to limit the insulating body  10  to only move in the second direction Y. Besides, the limiting surface  10042  limits the limiting elastic piece  168  to only move in the first direction X and in the direction close to the first surface  101 . In this way, the housing  16  can be prevented from detaching from the insulating body  10 . 
     In this embodiment, referring to  FIG. 1  and  FIG. 2 , side edges of two side surfaces of the housing  16  away from the top surface of the housing  16  further comprise a plurality of pins  169 . The plurality of pins  169  protrude from the side edges of the two side surfaces of the housing  16  away from the top surface of the housing  16  along the third direction Z. 
       FIG. 15  is a perspective view of an electrical connector of the second embodiment of the present disclosure.  FIG. 16  is a cross-sectional view along line J-J′of  FIG. 15 . As shown in the figures, in this embodiment, the electrical connector  1  is different from that of the first embodiment in that a fourth electromagnetic shielding member  17  is additionally disposed. A bottom surface of the insulating body  10  further comprises a plurality of fourth hollow parts  1005 . The plurality of fourth hollow parts  1005  are respectively communicated with a plurality of second terminal plugging slots  106   b . A plurality of second ground terminals  122  are respectively exposed from the plurality of fourth hollow parts  1005 . The fourth electromagnetic shielding member  17  comprises a plurality of second contacting bumps  171  disposed at intervals. The plurality of second contacting bumps  171  extend along the third direction Z. When the fourth electromagnetic shielding member  17  is disposed on the insulating body  10 , the plurality of second contacting bumps  171  would respectively enter the plurality of fourth hollow parts  1005 , the plurality of second contacting bumps  171  would be respectively in contact with the plurality of second ground terminals  122 , and the fourth electromagnetic shielding member  17  disposed at the two second contacting bumps  171  would be in contact with the insulating body  10  disposed between the two fourth hollow parts  1005 . In this way, the fourth electromagnetic shielding member  17  could electromagnetically shield the plurality of second signal terminals  121 , which effectively improves the electromagnetic shielding performance of the electrical connector  1 . In this embodiment, the cross-sectional shape of the fourth hollow part  1005  is identical to the cross-sectional shape of the second contacting bump  171 , so that the plurality of second contacting bumps  171  of the fourth electromagnetic shielding member  17  can be stably engaged with the plurality of fourth hollow parts  1005 , respectively. This also indicates that the fourth electromagnetic shielding member  17  can be directly assembled to the insulating body  10 . In this embodiment, the fourth electromagnetic shielding member  17  is wave-shaped. 
     In this embodiment, the bottom surface of the insulating body  10  further comprises a second retaining part  1006 . The plurality of fourth hollow parts  1005  are disposed in the second retaining part  1006 . The fourth electromagnetic shielding member  17  is disposed in the second retaining part  1006  so that the fourth electromagnetic shielding member  17  does not protrude from the bottom surface of the insulating body  10 . In this embodiment, the fourth electromagnetic shielding member  17  further comprises a plurality of second positioning bumps  172  respectively disposed between two adjacent second contacting bumps  171 . The plurality of second positioning bumps  172  extend along the first direction X. When the plurality of second contacting bumps  171  are assembled to the plurality of fourth hollow parts  1005 , the plurality of second positioning bumps  172  would abut against a surface of the second retaining part  1006  in the third direction Z to position the fourth electromagnetic shielding member  17  in the second retaining part  1006 . In this way, the plurality of second contacting bumps  171  can be accurately disposed in the plurality of fourth hollow parts  1005 , respectively. 
     In this embodiment, the first electromagnetic shielding member electromagnetically shields the plurality of first signal terminals of the first terminal module  11 . The second electromagnetic shielding member  14  and the fourth electromagnetic shielding member  17  cover the plurality of second signal terminals  121  of the second terminal module  12  to electromagnetically shield the plurality of covered second signal terminals  121 . In this way, the electromagnetic interference or external electromagnetic interference generated by the plurality of second signal terminals  121  can be completely shielded, so that the electrical connector  1  could excellently perform electromagnetic shielding. 
       FIG. 17  is a cross-sectional view of an electrical connector of the third embodiment of the present disclosure. As shown in the figure, in this embodiment, the electrical connector  1  is different from that of the second embodiment in that the second electromagnetic shielding member is omitted. In this embodiment, the electrical connector  1  is only provided with a first electromagnetic shielding member  13  and a fourth electromagnetic shielding member  17 . The first electromagnetic shielding member  13  electromagnetically shields a plurality of first signal terminals of a first terminal module  11 . The fourth electromagnetic shielding member  17  electromagnetically shields a plurality of second signal terminals of a second terminal module  12 . 
       FIG. 18  is a cross-sectional view of an electrical connector of the fourth embodiment of the present disclosure. As shown in the figure, in this embodiment, the electrical connector  1  is different from that of the second embodiment in that the second electromagnetic shielding member  14  further comprises a plurality of upper contacting elastic pieces  143  disposed at intervals. The plurality of upper contacting elastic pieces  143  are disposed at the other side of an electromagnetic shielding body  141 . The extending direction of the plurality of upper contacting elastic pieces  143  is opposite to the extending direction of a plurality of lower contacting elastic pieces  142 . One ends of the plurality of upper contacting elastic pieces  143  away from the electromagnetic shielding body  141  pass through a terminal accommodating groove  105  to respectively contact with a first electromagnetic shielding member  13 . The first electromagnetic shielding component  13  and a fourth electromagnetic shielding component  17  are connected through the second electromagnetic shielding component  14  so that the electromagnetic shielding performance of the electrical connector  1  can be improved. 
       FIG. 19  is a cross-sectional view of an electrical connector of the fifth embodiment of the present disclosure. As shown in the figure, in this embodiment, the electrical connector  1  is different from that of the fourth embodiment in that the first electromagnetic shielding member is omitted. One ends of the plurality of upper contacting elastic pieces  143  away from an electromagnetic shielding body  141  pass through a terminal accommodating groove  105  to respectively contact with a plurality of first ground terminals  112 . A second electromagnetic shielding member  14  could electromagnetically shield a plurality of first signal terminals of a first terminal module  11  and a plurality of second signal terminals of a second terminal module  12  simultaneously. 
     In other embodiments, a plurality of lower contacting elastic pieces can be omitted to allow a second electromagnetic shielding member  14  only to contact with a plurality of first ground terminals  112  of a first terminal module  11  to electromagnetically shield a plurality of first signal terminals of the first terminal module  11 . A fourth electromagnetic shielding member  17  could electromagnetically shield a plurality of second signal terminals of a second terminal module  12 . 
       FIG. 20  is a cross-sectional view of an electrical connector of the sixth embodiment of the present disclosure. As shown in the figure, in this embodiment, the electrical connector  1  is different from that of the fifth embodiment in that the fourth electromagnetic shielding member is omitted. A second electromagnetic shielding member  14  can electromagnetically shield a plurality of first signal terminals of a first terminal module  11  and a plurality of second signal terminals of a second terminal module  12  simultaneously. 
     In the above description, the electromagnetic shielding component of the present disclosure can be an arbitrary combination of the first electromagnetic shielding member, the second electromagnetic shielding member, and the fourth electromagnetic shielding member, for example, a combination of the first electromagnetic shielding member and the second electromagnetic shielding member (first embodiment), a combination of the first electromagnetic shielding member, the second electromagnetic shielding member, and the fourth electromagnetic shielding member (the second embodiment and the fourth embodiment), a combination of the first electromagnetic shielding member and the fourth electromagnetic shielding member (third embodiment), a combination of the second electromagnetic shielding member and the fourth electromagnetic shielding member (fifth embodiment), and the only second electromagnetic shielding member (sixth embodiment). 
     In summary, embodiments of the present disclosure provide an electrical connector. By disposing the electromagnetic shielding component in the insulating body or/and the first terminal insulating body of the first terminal module in a physical mounting manner, the assembling can be easy and the complexity of manufacturing can be reduced. Meanwhile, the electromagnetic shielding components can be arbitrarily replaced, which greatly improves the convenience of use. 
     It is to be understood that the term “comprises”, “comprising”, or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device of a series of elements not only comprise those elements but further comprises other elements that are not explicitly listed, or elements that are inherent to such a process, method, article, or device. An element defined by the phrase “comprising a . . . ” does not exclude the presence of the same element in the process, method, article, or device that comprises the element. 
     Although the present disclosure has been explained in relation to its preferred embodiment, it does not intend to limit the present disclosure. It will be apparent to those skilled in the art having regard to this present disclosure that other modifications of the exemplary embodiments beyond those embodiments specifically described here may be made without departing from the spirit of the disclosure. Accordingly, such modifications are considered within the scope of the disclosure as limited solely by the appended claims.