TWM542269U - Electric socket connector - Google Patents

Description

Socket electrical connector

The present invention relates to an electrical connector, and more particularly to a socket electrical connector.

With the development of the Universal Serial Bus (USB) interface specification, more and more products are adopting this specification. Currently, the USB 2.0 transmission specification is popular on the market, but since the USB interface has been widely used in high-frequency, RF, wireless or Bluetooth transmitters, the transmission rate of the USB2.0 specification is increasingly unable to meet the existing products. demand.

Therefore, specifications for faster transfer rates, such as USB 3.0 and USB 3.1, are also gradually expanding and expanding market share. However, as the amount of data in digital data convergence increases, it is necessary to cooperate with faster digital data transmission speed. For external electromagnetic interference, radio frequency interference, or crosstalk between internal terminals, it will affect the product. effect. Electromagnetic interference, radio frequency interference, or signal crosstalk may cause signals of wireless and Bluetooth products to be affected, resulting in failure to operate normally.

In order to suppress signal crosstalk, external electromagnetic interference or radio frequency interference, the overall structural design adds shielding components. In general, the socket electrical connector is usually provided with a metal casing to achieve the shielding effect. Referring to Figure 1, a schematic exploded view of a conventional metal housing. As shown in FIG. 1, the conventional metal housing is generally two-piece, including an inner housing 800 and an outer housing 900. The inner casing 800 is used to cover the inner socket module. In order to provide shielding of the terminal, the inner casing 800 structurally includes at least one bending section 810. The bending section 810 is formed by bending by stamping. There may be material defects at the welds of the plates and the plates, resulting in a decrease in strength.

Further, an opening may be formed in the inner casing 800 for the insertion of the jig and the reinforcement of the connection with the socket body. Therefore, in the case where the inner casing 800 is low in strength, the inner casing 800 may be deformed or even broken due to an external force or an insertion direction error.

The conventional outer casing 900 covers the outer portion of the inner casing 800, and is mainly used for lifting the structural strength, reinforcing the uncovered portion of the inner casing 800, and contacting the inner casing 800 to form a ground loop to enhance the shielding effect. Due to the structure of the flexing section 810, the tolerances of the assembly must be maintained such that there is typically a significant gap between the inner casing 800 and the outer casing 900, which may result in poor shielding.

A general user may insert the connector in the reverse direction without paying attention to the plugging direction during plugging, which may cause deformation or damage of the internal plug module. Whether the cracking of the casing or the deformation of the plug-in module requires the entire product to be disassembled and replaced, the overall maintenance cost is quite expensive. Thus, there is a need for a receptacle electrical connector structure that addresses the above problems.

The main purpose of the novel creation is to provide a socket electrical connector. The socket electrical connector includes a socket terminal module, a first metal housing and a second metal housing. The socket terminal module comprises a body, a tongue plate, a plurality of first terminals, a plurality of second terminals and a shielding piece. The tongue plate extends from one side of the seat body, and the first terminal, the second terminal and the shielding piece are fixed in the seat body and the tongue plate. A first contact segment of the first terminal is fixed to a first surface of the tongue plate, and a first welding segment of the first terminal protrudes from the seat body. A second contact segment of the second terminal is fixed to a second surface of the tongue plate, and a second solder segment of the second terminal protrudes from the base body. The shielding sheet is located between the first terminal and the second terminal. Here, the second surface is relative to the first surface.

The first metal casing surrounds and shields the tongue plate. One side of the first metal casing abuts against the seat body, and the other side of the first metal casing has an abutting flange, and the abutting flange protrudes outward. The second metal casing covers the outside of the first metal casing and the socket terminal module, and one side of the second metal casing defines a socket, and the first metal casing is inserted by the socket, and the second metal casing and the second metal casing A metal housing contacts and the abutting flange abuts the side edge of the socket. Therefore, generally, the second metal casing is first installed outside the socket terminal module, and then the first metal casing is inserted by the socket until the abutting flange and the outer edge of the socket are positioned.

In one embodiment, the second metal housing includes a first wall surface, a second wall surface, a third wall surface, and a fourth wall surface. The third wall surface and the fourth wall surface are opposite to each other, and are respectively connected to the first wall surface and the second wall surface. A wall, a second wall, a third wall, and a fourth wall define a socket. The first metal housing is in contact with the first wall surface, the second wall surface, the third wall surface, and the fourth wall surface. Further, the first metal shell and the second metal shell can be welded by laser welding.

Further, the second metal housing further includes a tail section. The tail section is located on the opposite side of the socket, and the tail section extends from the first wall surface and is bent toward the second wall surface and is connected to the third wall surface and the fourth wall surface. The tail end generally partially shields the first weld segment and the second weld segment to provide the effect of metal shielding. In addition, the tail section has at least one grounding pin extending from the other side of the first wall surface for connection with an external circuit board to form a ground loop.

Further, the third wall surface and the fourth wall surface each include a plug leg, and the plug leg extends from the third wall surface and the fourth wall surface. The pin, the first weld segment and the second weld segment are commonly connected to an external circuit board.

Further, at least one opening is further formed on the first wall surface, the second wall surface, the third wall surface and the fourth wall surface. The second metal housing further includes at least one contact elastic piece extending from a side wall of the opening of the first wall surface and bent in a direction toward the second wall surface and in contact with the base body.

In an embodiment, the socket electrical connector further includes a first grounding piece and a second grounding piece. The first grounding piece is assembled to the first surface of the tongue plate, and the second grounding piece is assembled to the second surface of the tongue plate. The shielding effect is provided by the first contact segment and the second contact segment of the first grounding strip and the second grounding strip shielding portion. In addition, the first grounding piece further includes two first grounding elastic pieces, the first grounding elastic piece is in contact with the two first grounding terminals of the first terminal, and the second grounding piece further comprises two second grounding elastic pieces, the second grounding elastic piece and the second Two of the terminals are in contact with each other to form a ground loop.

In one embodiment, the shielding sheet further comprises two pins, the two legs protruding from the base body and located on both sides of the base body for soldering to the external circuit board.

In one embodiment, the number of the first terminal and the second terminal are the same, and the order of arrangement is reversed, so that when the socket is inserted, both the forward and reverse directions can be applied, and the same signal is transmitted.

Another object of the novel creation is to provide a socket electrical connector. The socket electrical connector includes a socket terminal module, a first metal housing and a second metal housing. The socket terminal module comprises a body, a tongue plate, a plurality of first terminals, a plurality of second terminals and a shielding piece. The tongue plate extends from one side of the seat body, and the first terminal, the second terminal and the shielding piece are fixed in the seat body and the tongue plate. a first surface of the first contact segment of the first terminal, a first soldering portion of the first terminal protrudes from the base body, and a second contact portion of the second terminal is located on a second surface of the tongue plate A second welded portion of the two terminals protrudes from the base. The shielding sheet is located between the first terminal and the second terminal, wherein the second surface is opposite to the first surface. The first metal casing surrounds and shields the tongue plate, and one side of the first metal casing abuts against the seat body. The second metal housing is located outside the socket terminal module and the first metal housing, and the second metal housing includes a first wall surface, a second wall surface and a third wall surface. The second wall surface and the third wall surface respectively extend from both sides of the first wall surface and are bent toward the socket terminal module, and the first wall surface is welded to the first metal shell.

In an embodiment, the second wall surface and the third wall surface of the second metal shell respectively extend out of a plug leg, and the plug leg is commonly connected to the outer circuit board and the first soldering section and the second soldering section to Form a ground loop.

In the above embodiment, the main technical feature is that the first metal casing is mounted in the casing mode to the second metal casing, or the second metal casing is directly welded to the first metal casing. The first housing only covers the tongue portion of the terminal module, and the rear portion of the shielded welding section is discarded, so that the overall structure is simple and the structural strength is improved. Further, since the difficulty of assembly can be reduced, the tolerance can be designed to be smaller, the adhesion of the first metal casing and the second metal casing is improved, and the effect of the metal shield is improved.

The detailed features and advantages of the present invention are described in detail in the following description, which is sufficient to enable any skilled person to understand the technical contents of the present invention and to implement it according to the contents disclosed herein, the scope of the patent application and In the drawings, any person skilled in the art can easily understand the objects and advantages associated with the creation of the novel.

Referring to Figures 2-6, respectively, is a perspective view of a socket electrical connector of the first embodiment of the present invention, an exploded view of the socket electrical connector of the first embodiment of the present invention, and a socket electrical connector of the first embodiment of the present invention. FIG. 3 is a partial cross-sectional view showing the socket electrical connector of the first embodiment of the present invention, and a partial cross-sectional view of the socket electrical connector of the first embodiment of the present invention. As shown in FIG. 2-6, the socket electrical connector 1 of the first embodiment of the present invention comprises a socket terminal module 10, a first metal casing 40 and a second metal casing 50.

The socket terminal module 10 includes a body 11 , a tongue 13 , a plurality of first terminals 21 , a plurality of second terminals 23 , and a shielding sheet 30 . The seat body 11 and the tongue plate 13 may be integrally formed, for example, integrally formed by insert molding, and the tongue plate 13 is extended from one side of the seat body 11. The first terminal 21, the second terminal 23, and the shielding sheet 30 are fixedly attached to the base body 11 and the tongue plate 13. A first contact segment 211 of the first terminal 21 is located on a first surface 131 of the tongue plate 13, and a first solder segment 213 of the first terminal 21 protrudes from the base body 11 and can be connected to an external circuit board (not shown). welding. A second contact segment 231 of the second terminal 23 is located on a second surface 133 of the tongue plate 13 and a second welding segment 233 of the second terminal 23 protrudes from the base body 11. Here, the second surface 133 is relative to the first surface 131, for example, the first surface 131 is the upper surface of the tongue 13 and the second surface 133 is the lower surface of the tongue 13.

The number of the first terminals 21 and the second terminals 23 is the same, and the arrangement order is reversed, and thus, when the socket is inserted, both the forward and reverse insertions can be applied, and the same signal is transmitted. In the arrangement, two of the first terminals 21 are two first ground terminals 21G, and two of the second terminals 23 are two second ground terminals 23G.

The first soldering portion 213 and the second soldering portion 233 may be a dual in-line package (DIP) or a surface mount technology (SMT) mounted on the circuit board. In the figure, the packaging method of each of DIP and SMT is adopted, and actually, it may be a combination of other packaging methods.

The shielding sheet 30 is located between the first terminal 21 and the second terminal 23, and has a metal shield to reduce the problem of crosstalk. The shielding piece 30 further includes two pins 31 protruding from the base 11 and located on both sides of the base 11. Further, the edge of the shield sheet 30 is also exposed to the tongue piece 13.

The first metal casing 40 is a hollow body surrounding and shielding the outside of the tongue plate 13. The first metal casing 40 may be an integrally formed sleeve shape, or may be formed by bending and splicing two sheets of material. One side of the first metal casing 40 abuts against the wall surface 111 of the seat body 11 , and the other side of the first metal casing 40 has an abutting flange 41 , and the abutting flange 41 is from the first metal casing 40 . One side protrudes outward. For example, it is bent or extended by the outer surface of the first metal casing 40. The abutment flange 41 has a larger diameter on one side of the first metal casing 40.

The second metal casing 50 is wrapped around the first metal casing 40 and the socket terminal module 10 . As shown in FIG. 3-4, the second metal casing 50 includes a first wall surface 51, a second wall surface 52, a third wall surface 53, and a fourth wall surface 54, wherein the first wall surface 51 represents the upper surface. The second wall surface 52 is a lower surface, the third wall surface 53 and the fourth wall surface 54 are opposite side surfaces, and the third wall surface 53 and the fourth wall surface 54 are connected to the first wall surface 51 and the second wall surface 52, respectively. The first wall surface 51, the second wall surface 52, the third wall surface 53, and the fourth wall surface 54 may be flat or curved, and the first wall surface 51, the second wall surface 52, the third wall surface 53, and the fourth wall surface 54 are defined. A socket 55.

At the time of installation, the second metal casing 50 is first mounted on the outside of the socket terminal module 10, and then the first metal casing 40 is inserted by the socket 55 until the abutting flange 41 abuts the outer edge of the socket 55. Thereby the first metal housing 40 is positioned. At this time, both ends of the first metal casing 40 are respectively connected to the outer edges of the sockets 51 of the seat body 11 and the second metal casing 50. That is, the first metal casing 40 is fitted into the second metal casing 50 in a sleeve pattern and is engaged with the second metal casing 50 by the abutment flange 41. Further, the first metal casing 40 is in contact with the first wall surface 51, the second wall surface 52, the third wall surface 53, and the fourth wall surface 54. Further, the first metal casing 40 and the second metal casing 50 may be welded and fixed by laser welding.

As shown in FIG. 5, the second metal housing 50 further includes a tail section 56 located on the opposite side of the socket 55, extending from the first wall surface 51 and bent toward the second wall surface 52. The tail section 56 is connected to the third wall surface 53 and the fourth wall surface 54 to close one side of the second metal casing 50. For example, the two sides of the tail section 56 are formed with a fastening portion 561, and the two fastening portions 561 are bent toward the third wall surface 53 and the fourth wall surface 54, respectively, and the buckles 59 on the third wall surface 53 and the fourth wall surface 54 are respectively And connected. This is merely an example, but it can also be a single-sided welded closed form. The tail section 56 also includes a grounding pin 563 that extends from the other side of the first wall surface 51 by the tail section 56 for connection to an external circuit board (not shown) to form a ground loop. The tail end 56 further shields the first welding section 213 and the second welding section 233 to enhance the shielding effect.

In addition, the third wall surface 53 and the fourth wall surface 54 each include a plug leg 58 extending from the third wall surface 53 and the fourth wall 54 for connecting an external circuit board (not shown). The extension of the pin 58, the pin 31, and the ground pin 563 are generally oriented in the same direction.

Further, the first wall surface 51, the second wall surface 52, the third wall surface 53, and the fourth wall surface 54 are further provided with at least one opening 57 for inserting a jig (not shown) so that the socket terminal mold The set 10 and the second metal housing 50 are more compact when assembled. In addition, the second metal housing 50 further includes at least one contact elastic piece 515. The contact elastic piece 515 extends from a side wall 571 of the opening 57 of the first wall surface 51 and is bent toward the second wall surface 42 and can be seated. Body 11 is in contact.

Referring again to FIG. 3, the socket electrical connector 1 further includes a first grounding strip 61 and a second grounding strip 63. The first grounding strip 61 is assembled to the first surface 131 of the tongue plate 13, and the second grounding strip 63 is assembled. The second surface 133 of the tongue plate 13. Further, the first grounding piece 61 and the second grounding piece 63 are further engaged with the locking grooves 113 on the upper and lower surfaces of the base body 11. As shown in FIG. 6, the first grounding strip 61 further includes two first grounding elastic pieces 611. After the first grounding elastic piece 611 is engaged with the tongue piece 13, the first grounding terminal 21G on the two sides of the first terminal 21 is provided. In contact, the second grounding strip 63 further includes two second grounding elastic pieces 631. After the second grounding elastic piece 631 is engaged with the tongue piece 13, the second grounding piece 631 is in contact with the second grounding terminal 23G of the second terminal 23, thereby further forming a grounding loop. .

Referring to FIG. 7 and FIG. 8 respectively, FIG. 7 is a perspective view showing the socket electrical connector of the second embodiment of the present invention, and an exploded view of the socket electrical connector of the second embodiment of the present invention. Here, the difference between the socket electrical connector 2 of the second embodiment and the socket electrical connector 1 of the first embodiment is only in the first metal housing 40 and the second metal housing 70 and related assembly methods, and the rest of the technology. The features are the same as those in the first embodiment, and are not described herein again.

As shown in FIGS. 7-8, the first metal casing 40 of the socket electrical connector 2 of the second embodiment may not include the abutting flange 41, and the outer casing 70 includes a first wall surface 71 and a second wall surface 72. And a third wall 73. The second wall surface 72 and the third wall surface 73 extend from the two sides of the first wall surface 71 and are bent toward the socket terminal module 10 , so that the second wall surface 72 and the third wall surface 73 are located at the socket terminal module 10 . On both sides. The second wall surface 72 and the third wall surface 73 may be flat, curved, or a combination thereof. Thus, the outer casing 70 covers the socket terminal module 10 on three sides without shielding the bottom surface of the socket terminal module 10. At the time of assembly, the first metal casing 40 is first loaded so that the first metal casing 40 abuts against the wall surface 111 of the seat body 11 and surrounds and shields the outside of the tongue plate 13. Next, the outer casing 70 is disposed outside the first metal casing 40 and the socket terminal module 10.

The first metal casing 40 abuts at least the first wall surface 71. Further, the second metal casing 70 engages the first metal casing 40 between the second wall surface 72 and the third wall surface 73. Further, the first metal casing 40 and the second metal casing 70 may be welded by spot welding at the positions of the two laser welding points 79 of the first wall surface 71 by means of laser welding or the like.

In addition, the second wall surface 72 and the third wall surface 73 respectively have a plug-in leg 721, 731. The plug-in leg 721 extends from the second wall surface 72, and the plug-in leg 731 extends from the third wall surface 73, substantially plugging The foot 721 and the pin 731 are substantially parallel for soldering to an external circuit board (not shown) to further form a ground loop.

The main technical feature of the novel creation is to change the structural design of the outer metal casing, and cut the first metal casing to the rear portion of the rear end shield welding section, and only cover the tongue portion of the terminal module, and adopt the casing mode. The second metal shell is mounted on the second metal shell, or the second metal shell is directly welded to the first metal shell, thereby making the overall structure simple and improving the structural strength. In addition, since it is not necessary to consider the installation of the rear section in the design, the overall tolerance of the tolerance can be designed to be smaller, so that the adhesion of the first metal casing and the second metal casing can be improved, and the first metal casing is There is no need to open the opening, which further enhances the effect of the metal shield.

Through the above detailed description, it can fully demonstrate that the purpose and effect of this new creation are both progressive and highly industrial, and it is a new type that has never been seen before in the market, and fully meets the patent requirements. , 提出 apply in accordance with the law. The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. That is, all the changes and modifications made in accordance with the scope of this patent should belong to the scope of this creation patent. I would like to ask your review committee to give a clear understanding and pray for it. It is the prayer.

1‧‧‧Socket electrical connector

2‧‧‧Socket electrical connector

10‧‧‧Socket terminal module

11‧‧‧

111‧‧‧ wall

113‧‧‧ card slot

13‧‧‧ tongue plate

131‧‧‧ first surface

133‧‧‧ second surface

21‧‧‧First terminal

21G‧‧‧First grounding terminal

211‧‧‧First contact segment

213‧‧‧First welding section

23‧‧‧second terminal

23G‧‧‧Second ground terminal

231‧‧‧Second contact segment

233‧‧‧Second welding section

30‧‧‧Shield

31‧‧‧ pins

40‧‧‧First metal shell

41‧‧‧Abutment flange

50‧‧‧Second metal casing

51‧‧‧First wall

515‧‧‧Contact shrapnel

52‧‧‧ second wall

53‧‧‧ third wall

54‧‧‧ fourth wall

55‧‧‧ socket

56‧‧‧End

561‧‧‧Card

563‧‧‧ Grounding pin

57‧‧‧ openings

571‧‧‧ side wall

58‧‧‧ Pins

59‧‧‧ buckle

61‧‧‧First grounding piece

611‧‧‧First grounding shrapnel

63‧‧‧Second grounding piece

631‧‧‧Second grounding shrapnel

70‧‧‧Second metal casing

71‧‧‧First wall

72‧‧‧ second wall

721‧‧‧ Pins

73‧‧‧ third wall

731‧‧‧ Pins

79‧‧‧Laser solder joints

800‧‧‧ inner casing

810‧‧‧Bend section

900‧‧‧ outer casing

[Fig. 1] A schematic view of the decomposition of a conventional metal casing. [Fig. 2] A perspective view of the socket electrical connector of the first embodiment of the present invention. [Fig. 3] Fig. 3 is an exploded perspective view showing the socket electrical connector of the first embodiment of the present invention. [Fig. 4] Fig. 4 is a partially exploded perspective view showing the socket electrical connector of the first embodiment of the present invention. [Fig. 5] A perspective view of another perspective view of the socket electrical connector of the first embodiment of the present invention. [Fig. 6] Fig. 6 is a partial cross-sectional view showing the socket electrical connector of the first embodiment of the present invention. [Fig. 7] Fig. 7 is a perspective view showing the socket electrical connector of the second embodiment. [Fig. 8] Fig. 8 is an exploded perspective view showing the socket electrical connector of the second embodiment.

1‧‧‧Socket electrical connector

10‧‧‧Socket terminal module

13‧‧‧ tongue plate

40‧‧‧First metal shell

41‧‧‧Abutment flange

50‧‧‧Second metal casing

51‧‧‧First wall

515‧‧‧Contact shrapnel

52‧‧‧ second wall

53‧‧‧ third wall

54‧‧‧ fourth wall

56‧‧‧End

561‧‧‧Deduction Department

563‧‧‧ Grounding pin

57‧‧‧ openings

58‧‧‧ Pins

59‧‧‧ buckle

Claims (17)

A socket electrical connector comprising: a socket terminal module comprising a body, a tongue plate, a plurality of first terminals, a plurality of second terminals, and a shielding piece, the tongue plate extending from one side of the body The first terminal, the second terminal, and the shielding piece are fixed in the base body and the tongue plate, and a first contact segment of each of the first terminals is located on a first surface of the tongue plate, and each of the first terminals a first soldering section of the first terminal protrudes from the base body, a second contact section of each of the second terminals is located on a second surface of the tongue plate, and a second soldering section of each of the second terminals protrudes from The shielding piece is located between the first terminals and the second terminals, wherein the second surface is opposite to the first surface; a first metal housing surrounds and shields the tongue plate, One side of the first metal casing abuts against the seat body, and the other side of the first metal casing has an abutting flange, the abutting flange protrudes outward; and a second metal casing, Covering the first metal housing and the exterior of the socket terminal module, one side of the second metal housing is defined A socket, and the metal shell of the first system, the second metallic shell is contacted by the metal socket is inserted into the first housing, and the projection abuts against an outer edge abutting against the edge of the socket. The socket electrical connector of claim 1, wherein the second metal housing comprises a first wall surface, a second wall surface, a third wall surface and a fourth wall surface, wherein the third wall surface and the fourth wall surface are opposite And respectively connected to the first wall surface and the second wall surface, the first wall surface, the second wall surface, the third wall surface and the fourth wall surface define the socket, the first metal shell and the first wall surface The second wall surface, the third wall surface and the fourth wall surface are in contact with each other. The socket electrical connector of claim 2, wherein the second metal housing further comprises a tail section located on an opposite side of the socket, extending from the first wall surface and bent toward the second wall surface And connected to the third wall surface and the fourth wall surface. The socket electrical connector of claim 3, wherein two sides of the tail section are formed with two fastening portions, and the two fastening portions are respectively bent toward the third wall surface and the fourth wall surface, and the third The wall surface and the second wall are connected by two buckles. The socket electrical connector of claim 3, wherein the tail section further comprises at least one grounding pin extending from the other side of the tail section relative to the first wall. The socket electrical connector of claim 5, wherein the third wall surface and the fourth wall surface each comprise a plug leg extending from the third wall surface and the fourth wall surface. The socket electrical connector of claim 2, wherein the first wall surface, the second wall surface, the third wall surface and the fourth wall surface are further provided with at least one opening. The socket electrical connector of claim 7, the second metal housing further comprising at least one contact elastic piece extending from a side wall of the opening of the first wall surface toward the second wall surface The direction is bent. The socket electrical connector of claim 1, further comprising a first grounding piece and a second grounding piece, the first grounding piece being assembled on the first surface of the tongue plate, the second grounding piece being assembled on the The second grounding surface of the tongue plate, and the first grounding piece further includes two first grounding elastic pieces, the first grounding elastic pieces are in contact with two first grounding terminals of the first terminals, and the second grounding piece further comprises And a second grounding spring piece, wherein the second grounding spring pieces are in contact with two second grounding terminals of the second terminals. The socket electrical connector of claim 1, wherein the shielding sheet further comprises two pins protruding from the base and located on opposite sides of the base. The socket electrical connector of claim 1, wherein the first metal housing is a hollow body and is integrally formed. A socket electrical connector comprising: a socket terminal module comprising a body, a tongue plate, a plurality of first terminals, a plurality of second terminals, and a shielding piece, the tongue plate extending from one side of the body The first terminal, the second terminal, and the shielding piece are fixed in the base body and the tongue plate, and a first contact segment of each of the first terminals is located on a first surface of the tongue plate, and each of the first terminals a first soldering section of the first terminal protrudes from the base body, a second contact section of each of the second terminals is located on a second surface of the tongue plate, and a second soldering section of each of the second terminals protrudes from The shielding piece is located between the first terminals and the second terminals, wherein the second surface is opposite to the first surface; a first metal housing surrounds and shields the tongue plate, One side of the first metal housing abuts the base body; and a second metal housing is located outside the socket terminal module and the first metal housing, the second metal housing includes a first wall surface a second wall surface and a third wall surface, wherein the second wall surface and the third wall surface respectively On both sides of a wall surface and extending toward the socket terminal module is bent, and the first wall and the first metallic shell abuts. The socket electrical connector of claim 12, wherein the second wall surface and the third wall surface of the second metal housing respectively extend from a socket. The socket electrical connector of claim 12, further comprising a first grounding piece and a second grounding piece, the first grounding piece being assembled on the first surface of the tongue plate, the second grounding piece being assembled on the The second grounding surface of the tongue plate, and the first grounding piece further includes two first grounding elastic pieces, the first grounding elastic pieces are in contact with two first grounding terminals of the first terminals, and the second grounding piece further comprises And a second grounding spring piece, wherein the second grounding spring pieces are in contact with two second grounding terminals of the second terminals. The socket electrical connector of claim 12, wherein the shielding sheet further comprises two pins protruding from the base and located on opposite sides of the base. The receptacle electrical connector of claim 12, wherein the first metal housing is soldered to the first wall of the second metal housing. The socket electrical connector of claim 12, wherein the first metal housing is a hollow body and is integrally formed.