TWI651904B - Electrical connector - Google Patents

Abstract

An electrical connector includes an insulating base, a grounding member, a first insulating member, a second insulating member, a plurality of first terminals, a plurality of second terminals, and a housing. The grounding member includes a body and a bent structure, and the bent structure is disposed at a side of the body and serves as a grounding terminal, and includes a first grounding portion, a second grounding portion opposite to the first grounding portion, and a first grounding portion and An extension between the second ground portions. The first insulating member is disposed on the first surface of the body, the second insulating member is disposed on the second surface of the body, the first terminal is disposed on the first insulating member, the second terminal is disposed on the second insulating member, and the outer casing A grounding member is formed to form a mating space, and the docking space has an opening.

Description

Electrical connector

The invention relates to an electrical connector, in particular to an electrical connector in which a grounding terminal is integrated with a grounding member.

The electrical connector is a pipe that provides a signal connection between electronic devices by using a plurality of terminal signal contacts. The universal serial bus (USB) connector is now the most widely used battery. One of the connectors.

For ease of use, the industry has developed USB Type-C electrical connectors that can be plugged in forward and reverse. The Type-C connector interface includes an insulative housing, a plurality of first terminals, a plurality of second terminals, and a hollow housing. The insulative housing comprises a base and a tongue extending on one side of the base. Each of the first terminal and the second terminal are disposed on the base and the tongue, and the insulating cover is covered by the hollow outer casing and surrounds the tongue to form an interface. The current Type-C connector has 12 first terminals and second terminals respectively. In addition to functions such as data transmission and power supply, it also includes a plurality of ground terminals (generally 4), and the Type-C connector can be used. Support high voltage and current.

In order to achieve better masking requirements, the structure of the Type-C connector can also include a grounding member in the tongue to cover the crosstalk of the high-speed signal pair of the upper and lower terminals. However, such a design This can lead to more complicated manufacturing processes. It is therefore desirable to provide an improved Type-C connector structure design to simplify its manufacturing process.

In order to meet high-speed signal transmission and fast charging, the existing Type-C connector is provided with a grounding member and a plurality of grounding terminals, resulting in a complicated manufacturing process.

The present invention provides an electrical connector including a grounding member, an insulating base portion, a first insulating member, a second insulating member, a plurality of first terminals, a plurality of second terminals, and a housing, wherein the grounding member includes a body And a second bending structure, the body includes a first surface, a second surface opposite to the first surface, a front end portion, a rear end portion opposite to the front end portion, and the front end portion and the rear end portion And a first side and a second side opposite each other. The two bending structures are respectively disposed on the first side and the second side and used as the grounding terminal. The two bending structures include two first grounding portions, and the two first grounding portions are respectively disposed on the first side opposite to the body. The first side opposite to the second side and the second side are substantially parallel to the second side, and the second ground portion is respectively opposite to a second ground portion of the first ground portion a first side opposite to the second side of the body and a second side opposite to the body are substantially parallel to the second side; and an extension member is disposed between the first ground portion and the second ground portion And connecting the first ground portion and the second ground portion. An insulating base is disposed on the rear end portion of the grounding member adjacent to the body, a first insulating member is disposed on the first surface of the body, a second insulating member is disposed on the second surface of the body, and the plurality of first terminals are disposed at the first portion An insulating member is disposed on the two sides of the first terminals, a plurality of second terminals are disposed on the second insulating member, and two second ground portions are respectively disposed on the second terminals Both sides and an outer casing surround the grounding member to form a mating space, and the docking space has an opening.

The electrical connector provided by the present invention has a bent structure connected to the body of the grounding member, and the bent structure is electrically connected to the body of the grounding member, and thus can be used as a grounding terminal. In turn, the advantages of integrating the ground terminal with the grounding member are achieved.

1‧‧‧ Grounding parts

11‧‧‧Ontology

111‧‧‧ first surface

113‧‧‧ front end

114‧‧‧ Back end

12‧‧‧Bending structure

121‧‧‧First grounding

1211‧‧‧First recess

1212‧‧‧First Abutment

122‧‧‧Second grounding

1221‧‧‧ Second recess

1222‧‧‧second abutment

1223‧‧‧ Third Abutment

121a‧‧‧ Third recess

122a‧‧‧ Third recess

123‧‧‧Extensions

1231‧‧‧First Extension

1232‧‧‧Second extension

1233‧‧‧ Third Extension

1234‧‧‧4th extension

1233a‧‧‧First convex

1233b‧‧‧First convex

1234a‧‧‧second convex

S‧‧‧ accommodating space

H‧‧‧Bend structure height

H1‧‧‧first abutment height

H2‧‧‧second abutment height

2a‧‧‧First Fixed Department

2b‧‧‧Second fixed department

21‧‧‧ Groove structure

31‧‧‧First terminal

311‧‧‧First vertical section

312‧‧‧First pin

32‧‧‧second terminal

321‧‧‧Second vertical

P1‧‧‧ first imaginary plane

P2‧‧‧second imaginary plane

41a‧‧‧First insulation board

41b‧‧‧First insulating rubber

42a‧‧‧Second insulation board

42b‧‧‧Second insulation adhesive

5‧‧‧Shell

51‧‧‧ docking space

The first figure is a front view of an electrical connector in accordance with an embodiment of the present invention.

The second figure is an exploded schematic view of an electrical connector according to an embodiment of the present invention.

The third figure is a perspective view of a grounding member in an electrical connector according to an embodiment of the present invention.

The fourth figure is a developed planar view of the grounding member as shown in the third figure.

The embodiments of the present invention are described in the following specific embodiments, and those skilled in the art can readily understand other advantages and functions of the present invention from the disclosure of the present disclosure.

It should be understood that the structures, the proportions, the sizes, and the like, which are illustrated in the specification of the present specification, are only used to clarify the contents disclosed in the specification for understanding and reading by those skilled in the art, and are not intended to limit the implementation of the present invention. The conditions are limited, so it is not technically meaningful. Any modification of the structure, change of the proportional relationship or adjustment of the size should remain in the present invention without affecting the effects and the achievable purposes of the present invention. The disclosed technical content is within the scope of the disclosure. In the meantime, the terms "upper", "lower", "left", "right", "intermediate" and "one" as used in this specification are also for convenience of description, and are not intended to limit the present. The scope of the invention can be implemented, and the change or adjustment of the relative relationship is considered to be within the scope of the invention.

Please refer to the second figure. The second figure is an exploded schematic view of the electrical connector of the embodiment of the present invention. The invention provides an electrical connector, characterized in that the electrical connector comprises an insulation The base portion includes a tongue structure of the grounding member 1, a plurality of first terminals 31, a plurality of second terminals 32, a first insulating member, a second insulating member, and a casing 5.

According to the present invention, the insulating base portion may include a plurality of groove structures 21 and may be disposed at the rear end portion 114 of the grounding member 1 near the body 11. According to some embodiments of the present invention, the insulating base may include a first fixing portion 2a and a second fixing portion 2b. The first fixing portion 2a can be used to fix the plurality of first terminals 31, and the second fixing portion 2b can be used to fix the plurality of second terminals 32, but is not limited thereto.

Please refer to the third figure. The third figure is a perspective view of the grounding member of the tongue structure in the electrical connector of the embodiment of the present invention. According to some embodiments of the invention, the tongue structure may include a grounding member 1 that may include a body 11 and a bent structure 12. The bending structure 12 may include a first grounding portion 121 including a front end and a rear end opposite to the front end, the first grounding portion 121 being disposed on the first side or the second side of the body 11 and the first portion of the body 11 The one side or the second side is substantially parallel; the second ground portion 122 is disposed on the first side of the body 11 with respect to the second ground portion 122 of the first ground portion 121, including the front end and the rear end of the front end The side or the second side is substantially parallel to the first side or the second side of the body 11; and the extension member 123 is disposed between the first ground portion 121 and the second ground portion 122. According to further embodiments of the present invention, the body 11 may include a first surface 111, a second surface relative to the first surface 111 (not shown), a front end portion 113, and a rear end portion relative to the front end portion 113. And a first side and a second side (not shown) between the front end portion 113 and the rear end portion 114; the bending structure 12 may include a first ground portion 121, relative to The second ground portion 122 of the first ground portion 121 and the extension member 123. The first grounding portion 121 can include a front end and a rear end opposite to the front end. The first grounding portion 121 can be disposed on the first side and the second side of the body 11 and opposite to the first side of the body 11 And the second side is substantially parallel; the second ground portion 122 can include a front end and a rear end relative to the front end, the second The grounding portion 122 may be disposed on the first side and the second side of the body 11 and substantially parallel to the first side and the second side of the body 11; and the extension member 123 may be disposed on the first ground portion 121 and The first ground portion 121 and the second ground portion 122 are connected between the second ground portions 122.

According to some embodiments of the present invention, the first insulating member may be disposed on the first surface 111 of the body 11; the second insulating member may be disposed on the second surface of the body 11; the plurality of first terminals 31 may be disposed at the first insulation And a plurality of second terminals 32 may be disposed on the second insulating member; and the outer casing 5 may surround the grounding member 1 to form a pair of joint spaces 51, the docking space 51 having an opening.

According to some embodiments of the present invention, the bending structure 12 is electrically connected to the body 11; according to a preferred embodiment of the present invention, the body 11 and the bending structure 12 are a one-piece structure, preferably, the body 11 and the bending structure 12 can be a one-piece metal plate (see the fourth figure), which is manufactured by cutting a metal piece into a desired shape by metal punching or the like. Specifically, a metal piece such as that shown in FIG. 4 can be obtained by die-cutting metal, and the metal piece is bent into a grounding member structure as shown in FIG. 3 by a technique such as pressing.

Referring to the second figure, the front ends of the plurality of first terminals 31 may face the front end of the body 11 and the first insulating member may be formed between the first surface 111 and the plurality of first terminals 31, and the plurality of first terminals 31. The rear end may extend toward the rear end portion 114 of the body 11 to the plurality of groove structures 21; and the front ends of the plurality of second terminals 32 may face the front end portion 113 of the body 11 and the second insulating member 32 may be formed on the second surface and Between the plurality of second terminals 32.

According to this embodiment, the first insulating member may include a first insulating plate 41a and a first insulating paste 41b, and the second insulating member may include a second insulating plate 42a and a second insulating paste 42b, and the first terminal 31 utilizes the first An insulating paste 41b is fixed to the first insulating plate 41a, and the second terminal 32 is fixed to the second insulating plate 42a by the second insulating paste 42b.

According to an embodiment of the invention, the plurality of first terminals 31 may further include a plurality of first vertical portions 311 and a plurality of first pins 312, wherein the plurality of first vertical portions 311 are substantially separable with the plurality of A terminal 31 is perpendicular to each other; and one end of each of the first vertical portions 311 is respectively connected to a corresponding rear end of the first terminal 31, and the other ends of the first vertical portions 311 are respectively connected to the corresponding ones. The first pin 312. The plurality of second terminals 32 may further include a plurality of second vertical portions 321 substantially perpendicular to the plurality of second terminals 32, wherein each of the second vertical portions 321 One end may be respectively connected to the rear ends of the corresponding second terminals 32.

According to some embodiments of the present invention, the width of the first ground portion 121 and the second ground portion 122 of the bent structure 12 is greater than or equal to the width of each of the first terminals 31 or the width of each of the second terminals 32.

According to an embodiment of the invention, the plurality of first terminals may be 12 known terminals, including, for example, a set of ground terminals, a set of SuperSpeed TX differential signal terminals, a set of SuperSpeed RX differential signal terminals, and a set of bus power supplies. a terminal, a set of configuration channel terminals, and a set of USB 2.0 differential signal terminals; the plurality of second terminals can be 12 known terminals, including, for example, a set of ground terminals, a set of SuperSpeed TX differential signal terminals, A set of SuperSpeed RX differential signal terminals, a set of bus power terminals, a set of configuration channel terminals, and a set of USB 2.0 differential signal terminals. The USB Type-C specification electrical connector enables forward and reverse insertion because the first terminal and the second terminal have the same function and are arranged in a relative manner.

In some embodiments of the invention, the body 11 and the bent structure 12 may be in one piece. The height h1 of the first abutting portion 1212 is substantially the same as the height h2 of the second abutting portion 1222. Therefore, the body 11 can be located at a half of the height H of the bent structure 12, and it is worth mentioning that The height H of the bent structure 12 is substantially equal to the sum of the height of each of the first terminals 31, the thickness of the body 11, the thickness of the first insulating member, the thickness of the second insulating member, and the height of each of the second terminals 32. According to still another embodiment of the present invention, the front edge of each of the plurality of first terminals 31 is substantially equal to the upper surface of the first ground portion 121, and the lower edges of the front ends of the plurality of second terminals 32 are second The lower surface of the grounding portion 122 is substantially equal, since the bending structure 12 is disposed on the side of the body 11 and has a height greater than the body 11 and protrudes upwardly from the first surface 111 of the body 11 and protrudes downwardly from the body 11 The two surfaces, and thus the bent structure 12 has a function as a ground terminal.

It can be understood that, in such an embodiment, the number of the plurality of first terminals 31 is less than 12, and the number of the plurality of second terminals 32 is less than 12, for example, the plurality of first terminals 31 may be 11 terminals, including, for example, A set of SuperSpeed TX differential signal terminals, a set of SuperSpeed RX differential signal terminals, a set of bus power terminals, a set of configuration channel terminals, a set of USB 2.0 differential signal terminals, and a ground terminal disposed adjacent to the second side of the body . The plurality of second terminals may be conventional 10 terminals including, for example, a set of SuperSpeed TX differential signal terminals, a set of SuperSpeed RX differential signal terminals, a set of bus power terminals, a set of configuration channel terminals, and a set of USB 2.0. a differential signal terminal and a ground terminal disposed adjacent to the second side of the body.

According to other preferred embodiments of the present invention, the grounding member 1 includes a body 11 and two bent structures 12, and the body 11 and the two bent structures 12 may be a one-piece type. The height h1 of the first abutting portion 1212 is substantially the same as the height h2 of the second abutting portion 1222. Therefore, the body 11 can be located at a half of the height H of the bending structure, and each of the plurality of first terminals 31 The upper edge of the front end is substantially equal to the upper surface of each of the first ground portions 121, and the lower edge of the front end of each of the plurality of second terminals 32 is substantially equal to the lower surface of each of the second ground portions 122 due to Each of the bent structures 12 is disposed in the book The first side and the second side of the body 11 are larger than the body 11 and protrude upwardly from the first surface 111 of the body 11 and protrude downwardly from the second surface of the body 11, thus bending the structure 12 Has the function as a ground terminal. Please refer to the first figure and the second figure together. The first figure is a front view of the electrical connector of the embodiment of the present invention. In this embodiment, the front edge of the front end of the plurality of first terminals 31 may define a first imaginary plane p1, and the lower edge of the front end of the plurality of second terminals 32 may define a second imaginary plane p2, which is the first An upper surface of a grounding portion 121 (not shown in the first figure) may be located at the first imaginary plane p1, and a lower surface of the second grounding portion 122 of the bent structure 12 (not shown in FIG. 1) may be located The second imaginary plane p2. Preferably, the positions of the upper end edges of the plurality of first terminals 31 located at the first imaginary plane p1 are symmetrical with the positions at which the lower end edges of the plurality of second terminals 32 are located at the second imaginary plane p2.

It can be understood that, in such an embodiment, the plurality of first terminals can be 10 terminals, including, for example, a set of SuperSpeed TX differential signal terminals, a set of SuperSpeed RX differential signal terminals, a set of bus power terminals, and a The group configures the channel terminals and a set of USB 2.0 differential signal terminals. The plurality of second terminals may be conventional 10 terminals including, for example, a set of SuperSpeed TX differential signal terminals, a set of SuperSpeed RX differential signal terminals, a set of bus power terminals, a set of configuration channel terminals, and a set of USB 2.0. Differential signal terminal. In this embodiment, the spacing between the first grounding portion 121 and the nearest first terminal 31 is equal to the spacing between adjacent two first terminals 31, and the second grounding portion 122 is closest to The spacing between the second terminals 32 is equal to the spacing between adjacent two of the second terminals 32.

It can be understood that, in the above embodiment, since the bent structure 12 on the side of the body 11 can be used as a grounding terminal, the advantage that the grounding terminal is integrated with the grounding member can be achieved.

Referring to FIG. 3 and FIG. 4, in accordance with the present invention, the first grounding portion 121 may further include a first abutting portion 1212 and the second grounding portion 122 may further include a second abutting portion 1222, wherein the first abutting portion 1222 The portion 1212 can be disposed between the first ground portion 121 and the first side and between the first ground portion 121 and the second side, and the second abutting portion 1222 can be disposed on the second ground portion 122 and the first side Between the sides or between the second ground portion 122 and the second side.

According to an embodiment of the present invention, the second grounding portion 122 may further include a third abutting portion 1223. The third abutting portion 1223 may be disposed at a rear end of the second grounding portion 122, and the first extending portion 1231 and the first portion The three abutting portions 1223 are arranged in opposite directions.

According to an embodiment of the present invention, the extension member 123 may include a first extension portion 1231, wherein a front end of the first ground portion 121 is connected to the first extension portion 1231, and a front end of the second ground portion 122 is opposite to the first portion A front end of a grounding portion 121 is connected to the first extending portion 1231.

According to the embodiment of the present invention, the extension member 123 further includes a second extension portion 1232, the second extension portion 1232 is connected to the first extension portion 1231, and the second extension portion 1232 and the first ground portion 121 Or the second ground portion 122 is substantially vertical. Preferably, the extension member 123 further includes a third extension portion 1233 and a fourth extension portion 1234, wherein the third extension portion 1233 is connected to the second extension portion 1232, and the fourth extension portion 1234 and the third portion The extensions 1233 are connected. In this embodiment, the second extension portion 1232 and the third extension portion 1233 may be disposed between the first ground portion 121 and the second ground portion 122 and located adjacent to the first ground portion 121 and the second portion. At the front end of the ground portion 122.

According to a preferred embodiment of the present invention, the third extending portion 1233 may further include first convex portions 1233a, 1233b formed on both sides, and the fourth extending portion 1234 may further include a second convex portion. The first grounding portion 121 and the second grounding portion 122 are further formed with third recesses 121a and 122a corresponding to and accommodating the first convex portions 1233a and 1233b, and correspondingly for receiving the second convex portion The accommodation space.

According to the embodiment, the body 11 and the bending structure 12 are of a one-piece type, and the manufacturing process is to cut a metal piece into a desired shape by metal punching or the like. For example, the metal piece may be bent downward from the body 11 by pressing, wherein the first grounding portion 121 is substantially parallel to the side of the body 11 , and the first abutting portion 1212 is located on the body 11 . Between the side of the first grounding portion 121 and the second grounding portion 122, the second grounding portion 122 is bent upwardly relative to the first grounding portion 121. The first extension portion 1231 is located at the front end of the first ground portion 121 and the second ground portion 122, and is substantially perpendicular to the first ground portion 121 and the second ground portion 122; the second extension portion 1232 and the third extension portion 1233 The fourth extension portion 1234 can be bent along the edges of the first ground portion 121 and the second ground portion 122 to be located between the first ground portion 121 and the second ground portion 122 and substantially perpendicular to the first ground portion 121. And the second grounding portion 122, wherein the first extending portion 1231, the second extending portion 1232, and the third extending portion 1233 can form an L-shaped structure; and then the second abutting portion 1222 is from the second ground portion 122 toward the body 11. Bending so that the second abutting portion 1222 is located at the side of the body and the second ground Between 122, the shielding plate is formed as a second configuration of FIG. According to some embodiments of the present invention, the third extending portion 1233 may further include first convex portions 1233a, 1233b formed on both sides, the fourth extending portion 1234 may further include a second convex portion 1234a, and the first The grounding portion 121 and the second ground portion 122 are further formed with third recesses 121a and 122a corresponding to and accommodating the first protrusions 1233a and 1233b, and a receiving space S corresponding to and accommodating the second protrusions 1234a. . It should be noted that the third and fourth figures of the present invention are merely illustrative of one embodiment of the grounding member in the tongue structure of the present invention, and those skilled in the art will recognize those skilled in the art. It is understood that the shape of the metal piece can be adjusted according to requirements, and is not limited thereto.

It is to be noted that, in this embodiment, the first fixing portion 2a and the second fixing portion 2b of the insulating base portion can be used for fixing the first terminal 31 and the second terminal 32 and the grounding member 1, and the first terminal 31 and the first terminal 31 The two terminals 32 can be fixed to the grounding member 1 by using the first insulating plate 41a and the first insulating rubber 41b and the second insulating plate 42a and the second insulating rubber 42b, respectively. However, the first terminal 31 and the second terminal 32 are not limited thereto. Alternatively, it may be fixed to the first insulating plate 41a and the second insulating plate 42a by insert injection molding. The first insulating plate 41a and the second insulating plate 42a are assembled and fixed with the grounding member 1 and the insulating base, and another option is selected. Therefore, the first insulating plate 41a and the second insulating plate 42a can be integrated into an insulator, and the insulator is assembled and fixed with the grounding member 1 and the insulating base. Alternatively, the insulator and the insulating base can be integrated into one body.

In summary, the electrical connector provided by the present invention includes an insulating base and a grounding member, including a body and a bent structure, the bent structure being disposed on at least one of two sides of the body, due to the bent structure And electrically connected to the body and disposed on at least one of the two sides of the body, the height of which is greater than the body, and thus can have the function of a ground terminal, and thus can replace the ground terminal of the first terminal and the second terminal. And the integration of the ground terminal and the grounding member is achieved. In addition, the bending structure is respectively formed on at least one of the two sides of the body and has a certain height and strength, so that when the electrical connector is inserted and removed, the structure on both sides of the grounding member in the protection tongue can be achieved. The effect is to effectively reduce the wear or deformation of the tongue structure, so that the structural stability of the electrical connector is better when docked, and does not adversely affect the transmission of high frequency signals.

The above detailed description is illustrative of a preferred embodiment of the invention, and is not intended to limit the scope of the invention. Equivalent changes and modifications made by the spirit of the invention as disclosed herein are intended to be included in the scope of the invention.

Claims (10)

An electrical connector includes: a grounding member, the grounding member comprising: a body including a first surface, a second surface opposite to the first surface, a front end portion, and a rear end opposite to the front end portion And a first side edge and a second side edge between the front end portion and the rear end portion; and two bending structures respectively disposed on the first side edge and the second side edge The grounding terminal includes: two first grounding portions, wherein the two first grounding portions are respectively disposed on the first side and the second side opposite to the body and respectively opposite to the body The second side portion is substantially parallel to the second side portion; the second ground portion is respectively disposed on the first side and the second side of the body opposite to the second ground portion of the first ground portion The first side opposite to the body and the second side are substantially parallel; and two extending members, each of the extending members is disposed between the first ground portion and the second ground portion and connected The first ground portion and the second ground portion; an insulating base portion The grounding member adjacent the rear end of the body; a first insulating member disposed on a first surface of the body; a second insulating member disposed on the second surface of the body; a plurality of first terminals are disposed on the first insulating member, and the two first ground portions are respectively disposed on two sides of the first terminals; the plurality of second terminals are disposed on the second insulating member, and The two second grounding portions are respectively disposed at two sides of the second terminals; and a casing surrounding the grounding member to form a pair of connecting spaces, the docking space having an opening. The electrical connector of claim 1, wherein a distance between the first ground portion and the first terminal adjacent to the first terminal is equal to a spacing between two adjacent first terminals, the second ground portion and the most The spacing between the adjacent second terminals is equal to the spacing between adjacent two of the second terminals. The electrical connector of claim 1, wherein an upper edge of the front end of each of the plurality of first terminals is substantially equal to an upper surface of the first ground portion, and a lower edge of the front end of each of the plurality of second terminals It is substantially equal to the lower surface of the second ground portion. The electrical connector of claim 1, wherein a width of the first ground portion is greater than or equal to a width of each of the first terminals, and a width of the second ground portion is greater than or equal to a width of each of the second terminals. The electrical connector of claim 1, wherein the plurality of first terminals is less than twelve, and the plurality of second terminals is less than twelve. The electrical connector of claim 1, wherein the first ground portion further includes a first abutting portion and the second ground portion further includes a second abutting portion, wherein the first abutting portion is disposed at the first portion a grounding portion and the first side edge Or between the first ground portion and the second side, and the second abutting portion is disposed between the second ground portion and the first side or between the second ground portion and the second side between. The electrical connector of claim 6, wherein the height of the first abutting portion is substantially the same as the height of the second abutting portion, the body being located at a half of the height of the bent structure. The electrical connector of claim 1, wherein the extension comprises a first extension, wherein a front end of the first ground portion is connected to the first extension, and a front end of the second ground portion is opposite to the first The front end of the grounding portion is connected to the first extending portion. The electrical connector of claim 8 wherein the extension further comprises a second extension and the third extension, the second extension being coupled to the first extension, the third extension and the The second extension portion is connected to the first extension portion, the second extension portion, and the third extension portion to form an L-shaped structure, and the second extension portion and the first ground portion or the second ground portion are substantially The second extension portion and the third extension portion are disposed between the first ground portion and the second ground portion, and are located adjacent to the first ground portion and the front end of the second ground portion. The electrical connector of claim 9, wherein the extension further includes a fourth extension, the fourth extension being coupled to the third extension, the third extension further comprising a side edge formed a first protrusion, the fourth extension further includes a second protrusion, the first ground portion and the second ground portion further A first recess corresponding to and accommodating the first protrusion and an accommodating space corresponding to and accommodating the second protrusion are formed.