TWM521821U - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to a grounding shield structure of an electrical connector.

The Chinese patent CN201420504847.9 discloses an electrical connector comprising: an insulative housing comprising a base and a tongue extending forward from the base; a plurality of terminals fixed to the insulative housing, the terminal having an extension to the a contact portion of the tongue plate; an outer casing mounted on an outer side of the insulative housing, the outer casing forming a receiving space therein for receiving a contact portion of the tongue plate and the terminal; and the insulating body and the An inner iron shell between the outer casing; and a grounding mechanism fixed in the insulating body, the grounding mechanism being in contact with the inner iron shell. The grounding mechanism may be a grounding strip disposed between the upper row of terminals and the lower row of terminals, and the two mounting portions of the inner iron shell are correspondingly inserted into the connecting holes on both sides of the grounding strip, thereby The iron shell is electrically connected to the grounding piece. The grounding mechanism may also be a grounding terminal located at two sides of the tongue plate, and the connecting pieces on both sides of the inner iron shell are in contact with the grounding terminal. In the existing grounding shielding structure, the inner iron shell can only be in contact with the grounding piece or the grounding terminal. In addition, especially between the inner iron shell and the ground terminal, a rigid abutting contact is used, which is unstable, and there is a risk of failure which affects the grounding shielding performance. In addition, the shields of the terminals of this design also lack the necessary shielding measures, which are prone to crosstalk when performing high-speed transmission. It can be seen that it is necessary to make improvements.

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art described above, and to provide an electrical connector capable of improving the ground shielding performance.

The present invention provides an electrical connector for the above technical problem, comprising: a first terminal module comprising a first insulating member and a row of first conductive terminals disposed on the first insulating member, the first insulating member Having a first body and a first tongue portion extending forwardly from the first body, the first tongue portion having a thicker rear tongue and a thinner front tongue, the rear tongue a first recess is formed in the recess; each of the first conductive terminals has a pair of joints exposed to the front tongue, a soldering portion protruding from the first body, and is embedded in the first insulator and exposed a fixing portion of the first recess, the first conductive terminal comprises two ground terminals and at least one signal terminal; and a second terminal module is fixedly coupled with the first terminal module, the second terminal module The invention includes a second insulating member and a row of second conductive terminals disposed on the second insulating member, the second insulating member having a second body and a second tongue portion extending forward from the second body The second tongue portion has a thicker rear tongue a thin front tongue plate having a first recess recessed therein; each of the second conductive terminals has a pair of joints exposed to the front tongue, a weld extending from the second body, and Buried in the second insulating member and exposed to a fixing portion of the first recess, the second conductive terminal comprises two grounding terminals and at least one signal terminal; and a first between the first body and the second body a grounding shielding piece is disposed between the first terminal module and the second terminal module, the grounding shielding piece includes a main piece body and is bent downwardly from a rear portion of the main piece body a folded edge and a soldering leg, the two sides of the main piece are respectively provided with an electrical connecting portion, and the folded edge and the soldering leg extend downward from the second concave portion, and the folded edge is separated from front to back a soldering portion of the first conductive terminals and a soldering portion of the second conductive terminals; two inner metal shells respectively covering the first insulating member and the second insulating member, each inner metal shell including a rear tongue plate a base on the upper side, extending from both sides of the base Two lateral connecting portions and two elastic contact arms extending from the base portion, the lateral connecting portions are correspondingly in contact with and electrically connected to the two electrical connecting portions of the grounding shielding piece, and the elastic contact arms pass through The first recess is elastically crimped with the grounding terminal in the rear tongue plate to make electrical contact; and an outer shielding shell is sleeved on the outer circumference of the insulating body and the inner metal shell, and is electrically connected to the inner metal shell In sexual contact, the outer shield surrounds the peripheral space of the tongue portion to form a pair of cavities.

Compared with the prior art, the present invention provides a first recessed portion on the rear tongue plate, so that the elastic contact arm on the inner metal shell can be elastically attached to the grounding terminal; and the fixing portion of the conductive terminal is partially exposed, which is good. Improving the impedance characteristic of the conductive terminal when transmitting the high-frequency signal; further, the lateral connection portion of the inner metal shell is in contact with and electrically connected to the electrical connection portion of the ground shielding sheet; and the second portion is formed on the main body of the insulating body. a recessed portion, wherein the flange and the grounding leg on the grounding shielding piece extend downward and are spaced between the welding portions of the two rows of conductive terminals; through the above structure, the grounding terminal, the grounding shielding piece, the inner metal shell and the outer shielding layer can be shielded The shells are electrically connected together to form a reliable and well-performing ground shield structure to improve ground shielding performance.

Although the present invention can be readily embodied in various forms, the specific embodiments shown in the drawings and described in detail in the specification are only The exemplary description of the novel principles is not intended to limit the invention to what is described herein.

Thus, a feature indicated in this specification will be used to illustrate one of the features of one embodiment of the present invention, and is not intended to suggest that each embodiment of the present invention must have the features described. Moreover, it should be noted that this specification describes a number of features. Although certain features may be combined together to illustrate possible system designs, these features are also applicable to other combinations not explicitly illustrated. Accordingly, the illustrated combinations are not intended to be limiting, unless otherwise indicated.

In the embodiments shown in the figures, the indications of the directions (such as up, down, left, right, front and back) are used to explain that the structure and motion of the various elements of the present invention are not absolute but relative. These descriptions are suitable when the elements are in the positions shown in the figures. If the description of the position of these elements changes, the indications of these directions also change accordingly.

The preferred embodiments of the present invention are further elaborated below in conjunction with the drawings of the specification.

Referring to Figures 1 through 9, a first preferred embodiment of the present type of electrical connector is shown. The electrical connector 10 can be mounted to the circuit board 20 in an on-board mounting manner. The electrical connector 10 generally includes: a first terminal module 1; a second terminal module 2 stacked on the first terminal module 1; and disposed between the two terminal modules 1 and 2 a grounding shield 3; a guiding fixture 4 formed on the front ends of the two terminal modules 1, 2; two inner metal shells 5 respectively covering the two terminal modules 1, 2; An outer shield shell 7 on the outer periphery of the two terminal modules 1, 2 and the two inner metal shells 5.

The first terminal module 1 includes a first insulating member 11 made of plastic and a row of first conductive terminals 13 fixed to the first insulating member 11 by insert molding.

The first insulating member 11 has a first body 112 and a first tongue portion 114 extending forwardly from the first body 112. The first tongue portion 114 has a thick rear tongue plate 1141 and A thin front tongue 1143 is provided on the lower surface of the rear tongue 1141 with a recessed first recess 1145. Two first receiving slots 1123 are recessed in the intersection of the front end surface and the top surface of the first body 112, and a fixing slot 1121 is recessed between the two first receiving slots 1123. In the present embodiment, the first recess 1145 is vertically penetrated through the rear tongue 1141. The first recess 1145 may have only a plurality of recesses open at the lower side due to the barrier of the first conductive terminal 13.

Specifically, the first recess 1145 includes a plurality of first holes 1148 recessed on the rear tongue 1141 and two opposite sides of the abutting surface (ie, the lower surface) recessed on the rear tongue 1141 Large first groove 1146 (see Figure 7). Preferably, the first recess 1145 includes a small and independent first hole 1148 corresponding to each of the first conductive terminals 13 facing the upper surface of the second terminal module 2, thereby facilitating embedding. The die is pressed during molding and retains strong structural strength. The bottom of the first groove 1146 is provided with three first holes 1148. The structure of the larger first groove 1146 can facilitate the contact with the inner metal shell 5.

Each of the first conductive terminals 13 has a pair of joints 132 located at the front and exposed to the lower surface of the front tongue 1143, a welded portion 134 located at the rear and extending from the first insulating member 11, and embedded in the first The insulating member 11 is exposed to a fixing portion 136 of the first recess 1145. The row of first conductive terminals 13 includes two ground terminals 131 on both sides and two power terminals 133 and a plurality of signal terminals 135 located between the two ground terminals 131. The front end of the ground terminal 131 and the power terminal 133 protrudes forward from the front end of the signal terminal 135. Moreover, the two power terminals 133 and the two ground terminals 131 project forwardly from the leading edge of the tongue plate 114 on which they are located. Preferably, a portion of the fixing portion 136 of each of the grounding terminals 131 exposed to the corresponding first recess 1145 constitutes a contact portion 137, and the other portion of the contact portion 137 is laterally widened outwardly. By providing the first recess 1145 at the rear tongue 1141, the high-frequency transmission impedance characteristic of the first conductive terminal 13 can be adjusted to improve the transmission performance; and it is convenient to press the first conductive terminals 13 during the insert molding and make them The tongue plate portion 114 is accurately positioned.

The second terminal module 2 includes a second insulating member 21 and a row of second conductive terminals 23 fixed to the second insulating member 21 by insert molding.

The second insulating member 21 has a second body 212 and a second tongue portion 214 extending forwardly from the second body 212. The second tongue portion 214 has a thicker rear tongue 2141 and a relatively thicker tongue. A thin front tongue 2143 is disposed on the rear tongue 2141 with a first recess 2145 recessed therein. The second body 212 and the first body 112 enclose a second recess 8 . Two first receiving slots 2123 are recessed on both sides of the front end surface of the second body 212, and a fixing slot 2121 is recessed between the two first receiving slots 2123. The second body 212 further has two second grooves 2127 recessed behind the first receiving groove 2123. A second recess 2125 is recessed in the second body 212. The rear sides of the two fastening slots 2127 are in communication with the third recess 2125.

In the second insulating member 21, the first recess 2145 includes a plurality of first holes 2148 recessed in the rear tongue 2141. Preferably, the first recess 2145 is provided with a first hole 2148 corresponding to each of the second conductive terminals 23 on the lower surface of the rear tongue 2141. Referring to FIG. 8, the first recess 2145 is recessed on both sides of the abutting surface (or upper surface) of the rear tongue plate 2141 with a larger first groove 2146, and the bottom of the first groove 2146 is provided with three The first hole 2148.

In the embodiment, the third recess 2125 includes a third recess 2126 recessed in the upper surface of the rear surface of the second body 212 and a plurality of third holes 2128 recessed in the bottom of the third recess 2126. . Preferably, the bottom surface of the second body 212 is provided with a third hole 2128 corresponding to each of the second conductive terminals 23 .

Each of the second conductive terminals 23 has a pair of joint portions 232 located at the front surface and exposed to the upper surface of the front tongue plate 2143, a welded portion 234 located at the rear and protruding from the first insulating member 21, and embedded in the first insulation The member 21 is exposed to a fixing portion 236 of the first recess 2145. The upper and lower sides of the fixing portion 236 of the second conductive terminal 23 are respectively exposed to the third recess 2126 of the third recess 2125 and the third hole 2128. The second conductive terminals 23 of the row include two ground terminals 231 located on both sides and two power terminals 233 and a plurality of signal terminals 235 located between the two ground terminals 231. The front end of the ground terminal 231 and the power terminal 233 protrudes forward from the front end of the signal terminal 235. Moreover, the two power terminals 233 and the two ground terminals 231 project forwardly from the leading edge of the tongue 214 where they are located. Preferably, the portion of the fixing portion 236 of each of the grounding terminals 231 correspondingly exposed to the corresponding first recess 2145 constitutes a contact segment 237 which is laterally wider than the other portions of the second conductive terminal 23. Structure to facilitate better contact.

It is to be noted that, in this embodiment, the abutting portion 232 of the second conductive terminal 23 and the abutting portion 132 of the first conductive terminal 13 are arranged vertically symmetrically. Referring to FIG. 8, the fixing portions 236 of the second conductive terminals 23 have a laterally offset section 2361. Specifically, the second conductive terminals 23 are divided into left and right halves, and the fixing portions 236 are respectively facing away from the sides. Lateral offset, viewed from top to bottom, is arranged in a herringbone. The lateral offset structure can make the soldering portions 234 of the second conductive terminals 23 and the soldering portions 134 of the first conductive terminals 13 laterally offset, thereby facilitating viewing of the two rows of conductive terminals 13 from the rear of the electrical connector 10. The welding portions 134 and 234 of the 23 are convenient for quality inspection.

The grounding shield 3 is formed by stamping and bending a metal piece. The grounding shield 3 includes a main body 31, a flange 33 bent downwardly from a rear end edge of the main body 31, and two grounding legs 35 on opposite sides of the flange 33. The soldering portions 134 of the first conductive terminals 13 are surface-attached and arranged in a first horizontal row; the soldering portions 234 of the second conductive terminals 23 are also surface-attached and arranged in a second horizontal direction. The flange 33 of the grounding shield 3 is laterally extended between the first horizontal row and the second horizontal row to prevent crosstalk of the welded portions 134, 234 of the signal terminals 135, 235 of the front and rear rows. Two electrical connecting portions 312 protrude from two sides of the rear tongue plates 1141 and 2141 on both sides of the main body 31. The two grounding legs 35 are substantially laterally aligned with the welded portion 134 of the first conductive terminal 13 and are separated into two sides. In this embodiment, the flange 33 of the grounding shield 3 and the two soldering legs 35 extend downward from the second recess 8 , and the grounding shield 3 protrudes forwardly from the two terminal modes. The leading edge of groups 1, 2

The guiding fixture 4 covers the conductive terminals 13, 23 and the front end of the grounding shield 3, and firmly bonds the front ends of the two terminal modules 1, 2 and the grounding shield 3. In this embodiment, the front ends of the two lower power terminals 133 and the two ground terminals 131 are embedded on the lower surface of the guiding fixture 4; the front ends of the two power terminals 233 and the two ground terminals 231 are The upper surface of the guide fixing member 4 is embedded, so that the front end of the conductive terminals 13, 23 can be prevented from being warped upward. The front end of the grounding shield 3 is exposed to the front edge surface and both side surfaces of the guiding fixture 4, so as to enhance the structural strength and provide grounding for the mating plug.

The two inner metal shells 5 are formed by stamping and bending a metal sheet. Each of the inner metal shells 5 includes a base portion 51 covering the rear tongues 1141, 2141 of the corresponding insulating members 11, 21, which is bent perpendicularly from the rear end of the base portion 51 and covers the corresponding insulating members 11, 21 An extension portion 55 on the first body 1121, the second body 2121, two lateral connecting portions 53 extending from both sides of the base portion 51, two elastic contact arms 57 extending from the base portion 55, and the The rear end of the extending portion 55 is further bent to extend a locking portion 59. The extending portion 55 specifically includes a vertical extending portion 552 and a horizontal extending portion 554. The four lateral connecting portions 53 are welded to the two electrical connecting portions 312 of the grounding shield 3. The two elastic contact arms 57 of each inner metal shell 5 are correspondingly disposed in the first recesses 1145, 2145 and elastically attached to the corresponding ground terminals 131, 231 to establish a reliable electrical connection. In this embodiment, the two electrical connecting portions 312 of the grounding shield 3 are respectively clamped up and down by the two lateral connecting portions 53 on the two inner metal shells 5, and are firmly combined by laser welding. Come together. The elastic contact arm 57 extends laterally outward and extends obliquely in the up and down direction. It is worth mentioning that the elastic contact arm 57 and the aforementioned first recess 1146 spanning the width of the plurality of conductive terminals 13, 23 and the laterally outwardly widened contact sections 137, 237 exposed to the first recess 1146 In cooperation, it can be ensured that the elastic contact arm 57 and the ground terminals 131, 231 are reliably electrically connected together.

The outer shield shell 7 is formed by stamping and bending a metal sheet. The outer shield shell 7 surrounds the peripheral space of the first tongue portion 214 and the second tongue portion 224 of the two insulating members 11, 21, and correspondingly forms a pair of cavities 9. The outer shield shell 7 has a top wall 71, two side walls 73 bent downwardly from the side edges of the top wall 71, and a bottom wall 75 extending from the side walls 73. The top wall A rear wall 76 extending downwardly from the rear end of the 71 and a plurality of fixing legs 77 extending downward from the two side walls 73. The top wall 71 and the bottom wall 75 are respectively provided with two inwardly protruding fastening structures 79; the fastening structures 79 can correspondingly engage the first receiving slots 1123, 2123 on the insulating members 11, 21 Thereby, the insulating members 11, 21 are prevented from moving forward relative to the outer shield shell 7 and the mating plug is prevented from being excessively inserted. The top wall 71 of the outer shield shell 7 is further provided with two fastening elastic pieces 78 projecting inwardly behind the two fastening structures 79; the two fastening elastic pieces 78 can be correspondingly locked to the second insulating member. The second recess 2127 in the 21st, thereby preventing the insulators 11, 21 from moving rearward relative to the outer shield shell 7.

The top and bottom sides of the outer shield shell 7 are closely attached to the extension portions 55 of the two inner metal shells 5 or are laser welded together to establish an electrical connection, and the ground shield sheet 3 and the ground terminals 13 and 23 are connected. The inner metal shell 5 can be electrically connected to the outer shield shell 7 to electrically connect all the ground structures of the electrical connector 10 as a whole.

The assembly process of the electrical connector 10 of the present invention generally includes: firstly, the first conductive terminal 13 is combined with the first insulating member 11 by insert molding to form the first terminal module 1; then, the second conductive terminal is 23 is formed by insert molding to form a second terminal module 2 in combination with the second insulating member 21; and then assembling the first terminal module 1, the grounding shield 3 and the second terminal module 2; and then, projecting Forming the guiding fixture 4 to combine the first terminal module 1, the grounding shield 3 and the second terminal module 2 into an inseparable whole; then, the two inner metal shells 5 are mounted to the terminals The first and second metal shells 5 are connected to the electrical connection portion 312 of the grounding shield 3; finally, the outer shield 7 is sleeved to the two terminal modules. 1, 2 and the outer circumference of the two inner metal shells 5, and then the above-mentioned fastening elastic piece 78 is bent downward, so that the outer shielding shell 7 and the two inner metal shells 5 are closely fitted and cannot be opposite to the two terminal modules. 1, 2 moves back and forth.

Compared with the prior art, the present invention provides the first recesses 1145, 2145 on the rear tongues 114, 214 so that the elastic contact arms 57 on the inner metal shell 5 can be elastically attached to the ground terminals 131, 231; The fixing portions 236 and 236 of the terminals 13 and 23 are partially exposed to the first recesses 1145 and 2145 and opposed to the inner metal shell 5, so that the impedance characteristics of the conductive terminals 13 and 23 when transmitting high-frequency signals can be improved; and the inner metal shell 5 is re-transmitted. Both sides of the grounding shield 3 are soldered together, so that the two can be firmly combined and obtain a good electrical grounding effect; and a second recess 8 is formed between the two terminal modules 1, 2 And the flange 33 is disposed on the grounding shield 3, so that the flange 33 protrudes downward from the second recess 8 and is laterally spaced between the welded portions 134 and 234 of the two rows of conductive terminals 13, 23, which is advantageous for reducing welding. The crosstalk of the portions 134, 234 improves the signal quality; in addition, by closely bonding the outer shield shell 7 and the inner metal shell 5, the ground terminals 13, 23, the ground shield 3, the two inner metal shells 5, and the outer shield can be shielded. The shells 7 are connected together to form a reliable and A good performance ground shield structure.

Referring to Figures 10 through 13, a second preferred embodiment of the present type of electrical connector is shown. The electrical connector 10a includes: a first terminal module 1a; a second terminal module 2a stacked on the first terminal module 1a; and is clamped and fixed between the two terminal modules 1a, 2a a grounding shield 3a; a guiding fixture 4a formed at the front ends of the two terminal modules 1a, 2a; two inner metal shells 5a covering the two terminal modules 1a, 2a; An outer shield case 7a is provided on the outer periphery of the two terminal modules 1a, 2a and the two inner metal shells 5a. A second recess 8a is disposed between the two terminal modules 1a, 2a. The outer shield case 7a surrounds the peripheral spaces of the two terminal modules 1a, 2a, and correspondingly forms a pair of cavities 9a. The electrical connector 10a is relatively close to the structure of the electrical connector 10, and the difference between the two is mainly embodied in that the electrical connector 10a is mounted on the circuit board 20a by means of a sinker mounting. Other differences between the two include, but are not limited to, the height of the flange 33 is higher, and the height of the flange 33a is lower; and the elastic contact arm 57 is formed by tearing down from the middle of the base of the inner metal shell 5. The elastic contact arm 57a is formed by tearing the rear end of the base of the inner metal shell 5a downward.

It can be understood that in the electrical connector 10, 10a, the first insulating member 11 and the second insulating member 21 are combined to form an integral insulating body 6, 6a. The first body 112 and the second body 212 are combined to form the main body 61, 61a of the insulating body 6, 6a; the first tongue portion 114 and the second tongue portion 214 are combined to form the tongue of the insulating body 6, 6a. Plate portions 63, 63a. Accordingly, the above-described rear tongues 1141, 2141 are combined into the rear tongue of the tongue portion 63, and the front tongues 1143, 2143 are combined to form the front tongue of the tongue portion 63. In the electrical connectors 10, 10a, the two inner metal members 5, 5a described above can be regarded as one inner metal shell. While in some embodiments not shown, the inner metal shell may be a one-piece, unitary structure without the use of the two-piece combination described above.

The above is only a preferred embodiment of the present invention, and is not intended to limit the embodiments of the present invention. Those skilled in the art can make corresponding modifications or modifications in a very convenient manner according to the main idea and spirit of the present invention. The scope of protection shall be subject to the scope of protection required by the scope of application for patents.

10‧‧‧Electrical connector
10a‧‧‧Electrical connector
1‧‧‧First Terminal Module
1a‧‧‧First terminal module
11‧‧‧First insulation
112‧‧‧ first subject
1121‧‧‧fixed slot
1123‧‧‧First storage trough
114‧‧‧First tongue part
1141‧‧‧Back tongue
1143‧‧‧Front tongue
1145‧‧‧First recess
1146‧‧‧first groove
1148‧‧‧ first hole
13‧‧‧First conductive terminal
131‧‧‧ Grounding terminal
132‧‧‧Docking Department
133‧‧‧Power terminal
134‧‧‧Welding Department
135‧‧‧ signal terminals
136‧‧‧ fixed department
137‧‧‧Contact section
2‧‧‧Second terminal module
2a‧‧‧Second terminal module
21‧‧‧Second insulation
212‧‧‧Second subject
2121‧‧‧fixed slot
2123‧‧‧First storage slot
2125‧‧‧ third recess
2126‧‧‧ third groove
2128‧‧‧ third hole
214‧‧‧Second tongue part
2141‧‧‧Back tongue
2143‧‧‧Front tongue
2145‧‧‧First recess
2146‧‧‧First groove
2148‧‧‧ first hole
23‧‧‧Second conductive terminal
231‧‧‧ Grounding terminal
232‧‧‧Docking Department
233‧‧‧Power terminal
234‧‧‧Weld Department
235‧‧‧Signal terminal
236‧‧‧Fixed Department
2361‧‧‧Transverse offset
237‧‧‧Contact section
3‧‧‧ Grounding shield
3a‧‧‧ Grounding shield
31‧‧‧Main body
33‧‧‧Folding
35‧‧‧welding feet
312‧‧‧Electrical connection
4‧‧‧Guide fixtures
4a‧‧‧Guide fixtures
5‧‧‧Metal metal shell
5a‧‧‧Metal shell
51‧‧‧ base
53‧‧‧ lateral connection
55‧‧‧Extension
552‧‧‧ Vertical extension
554‧‧‧Level extension
57‧‧‧Flexible contact arm
59‧‧‧Card Department
6‧‧‧Insulated body
6a‧‧‧Insulation body
61‧‧‧ Subject
61a‧‧‧ Subject
63‧‧‧ tongue plate
63a‧‧‧ tongue board
7‧‧‧Outer shield
7a‧‧‧Outer shield
71‧‧‧ top wall
73‧‧‧ side wall
75‧‧‧ bottom wall
76‧‧‧ Back wall
77‧‧‧ Grounding feet
78‧‧‧Carat shrapnel
79‧‧‧Kegu structure
8‧‧‧Second recess
8a‧‧‧Second recess
9‧‧‧ docking chamber
9a‧‧‧ docking chamber
20‧‧‧ boards
20a‧‧‧Board

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a perspective view of a first preferred embodiment of the present invention and a circuit board; 1 is a front view of a first embodiment of the present invention; FIG. 3 is a cross-sectional view taken along line BB of FIG. 2. FIG. 4 is an exploded perspective view of the first preferred embodiment of the present invention. Figure 5 is an exploded perspective view further exploded on the basis of Figure 4; Figure 6 is an exploded perspective view further exploded on the basis of Figure 5; Figure 7 is a perspective exploded further on the basis of Figure 6. Figure 8 is a perspective view of another perspective view of Figure 7; Figure 9 is a perspective view of two sets of conductive terminals, a grounding shield and two inner metal shells in a first preferred embodiment of the electrical connector of the present invention; 2 is a perspective view of a second preferred embodiment of the present invention; FIG. 11 is an exploded perspective view of the second preferred embodiment of the present invention; FIG. An exploded perspective view of the decomposition; and Figure 13 is in Figure 12 On the basis of a further exploded perspective exploded view.

10‧‧‧Electrical connector

1‧‧‧First Terminal Module

1145‧‧‧First recess

2‧‧‧Second terminal module

2125‧‧‧ third recess

2145‧‧‧First recess

3‧‧‧ Grounding shield

33‧‧‧Folding

4‧‧‧Guide fixtures

5‧‧‧Metal metal shell

55‧‧‧Extension

552‧‧‧ Vertical extension

554‧‧‧Level extension

59‧‧‧Card Department

7‧‧‧Outer shield

8‧‧‧Second recess

20‧‧‧ boards

Claims (28)

An electrical connector includes: a first terminal module including a first insulating member and a row of first conductive terminals disposed on the first insulating member, the first insulating member having a first body and a first tongue portion extending forwardly from the first body, the first tongue portion having a thick rear tongue plate and a thin front tongue plate, the first tongue portion being recessed with a first concave portion Each of the first conductive terminals has a pair of joints exposed to the front tongue, a soldering portion protruding from the first body, and a fixing portion embedded in the first insulating member and exposed to the first recess The first terminal of the row includes two grounding terminals and at least one signal terminal; a second terminal module is fixedly coupled with the first terminal module, the second terminal module includes a second insulating component and a row of second conductive terminals disposed on the second insulating member, the second insulating member having a second body and a second tongue portion extending forwardly from the second body, the second tongue portion Having a thicker rear tongue and a thinner front tongue, the rear tongue a first recess is formed in the recess, each of the second conductive terminals has a pair of joints exposed to the front tongue, a soldering portion protruding from the second body, and is embedded in the second insulator and exposed to the first portion a fixing portion of the recess, the second conductive terminal comprises two grounding terminals and at least one signal terminal, and a second recess is disposed between the first body and the second body; a grounding shielding piece is disposed on the first Between a terminal module and the second terminal module, the grounding shield includes a main body and a flange extending downward from a rear portion of the main body and a soldering leg, the main body Each of the two sides is provided with an electrical connecting portion, and the folded edge and the soldering leg extend downward from the second recessed portion, and the folded edge separates the soldering portions of the first conductive terminals from the second conductive portions a soldering portion of the terminal; two inner metal shells respectively covering the first insulating member and the second insulating member, each inner metal shell including a base portion covering the rear tongue plate, bent from both sides of the base portion Two lateral joints extending out and by the Two elastic contact arms extending from the base, the lateral connecting portions are correspondingly in contact with and electrically connected to the two electrical connecting portions of the grounding shielding piece, and the elastic contact arms pass through the first concave portion and correspond to the rear tongue The grounding terminal in the board is elastically crimped to make electrical contact; and an outer shielding shell is sleeved on the outer circumference of the insulating body and the inner metal shell, and is in electrical contact with the inner metal shell, the outer shielding shell surrounding the The peripheral space of the tongue portion forms a pair of cavities. The electrical connector of claim 1, wherein the portion of each of the ground terminals exposed to the corresponding first recess constitutes a contact segment that is laterally widened outwardly. The electrical connector of claim 1 or 2, wherein the first recess comprises four first recesses disposed on upper and lower surfaces of the rear tongue, and the fixing portions of the ground terminals are exposed to the first recesses The slot, the elastic contact arms of the inner metal shells pass through the first recess and are elastically crimped to the fixing portions of the ground terminals. The electrical connector of claim 3, wherein the first recess further comprises a plurality of first holes disposed on an upper surface or a lower surface of the rear tongue plate, each of the first holes corresponding to a fixing portion of one of the conductive terminals . The electrical connector of claim 1, wherein the fixing portion of the second conductive terminal of the row has a laterally offset portion such that the welded portion of the second conductive terminal of the row and the welded portion of the first conductive terminal of the row are Staggered in the horizontal direction. The electrical connector of claim 5, wherein the second conductive terminal of the row is divided into two portions, and the laterally offset segments of the two portions of the conductive terminals are each laterally offset laterally to the sides. The electrical connector of claim 1, wherein the two electrical connecting portions of the grounding shield are respectively protruded outwardly from opposite sides of the rear tongue. The electrical connector of claim 7, wherein the lateral connection portions of the two inner metal shells sandwich the electrical connection portions of the ground shield sheets and are welded together. The electrical connector of claim 1, wherein the upper surface of the second body of the second insulating member is provided with a third recess, and the fixed portion of the second conductive terminal of the row is exposed to the third recess. The electrical connector of claim 9, wherein the third recess comprises a third recess recessed in the second body and a plurality of third holes disposed in a bottom of the third recess, Upper and lower sides of the fixing portion of the second conductive terminal are respectively exposed to the third groove and the third hole. The electrical connector of claim 10, wherein the outer shield has a top wall, a bottom wall, and two side walls connected between the top wall and the bottom wall, the top wall and/or the bottom The wall is provided with two inwardly projecting fastening structures; the front side of the first body and/or the second body is recessed with two first receiving slots for receiving the two fastening structures, the two A front side of a receiving slot is in communication with the docking cavity. The electrical connector of claim 11, wherein the outer shield shell further has two inwardly projecting elastic tabs protruding from the rear of the two fastening structures; the third recess is adjacent to the second body The second recess is provided with two second recesses for receiving the two snap tabs. The electrical connector of claim 11, wherein the first body and/or the second body are provided with a fixing groove between the two first receiving slots; each of the inner metal shells further includes a rear portion of the base An extending portion extending perpendicularly from the end and a fixing portion extending from the rear end of the extending portion are further bent and fixed in the fixing groove. The electrical connector of claim 1, wherein the electrical connector further comprises a guiding fixture, the guiding fixture is injection molded on the front end of the first terminal module and the second terminal module, and the conductive The terminal and the front end of the grounding shield are covered therein. The electrical connector of claim 14, wherein each row of the conductive terminals comprises two power terminals and two ground terminals, the two power terminals and the two ground terminals are protruding forwardly from the tongue portion thereof The grounding shield protrudes forwardly from the front edges of the two terminal modules; the front ends of the two power terminals and the two ground terminals are embedded on the upper surface and the lower surface of the guiding fixture In one of the embodiments, the front end of the grounding shield is exposed to the leading edge surface and both side surfaces of the guiding fixture. An electrical connector comprising: an insulative housing having a body and a tongue portion extending forwardly from the body, the tongue portion having a thicker rear tongue and a thinner front tongue The upper and lower surfaces of the rear tongue plate are respectively provided with a first concave portion, and the lower surface of the main body is provided with a second concave portion; a row of first conductive terminals includes a grounding terminal and a signal terminal, and each of the conductive terminals has a front exposed a pair of joints on the lower surface of the tongue, a soldering portion extending downward from the body, and a fixing portion disposed in the insulating body and partially exposed to the first recess; a row of second conductive terminals including a ground a terminal and a signal terminal, each of the conductive terminals having a pair of contacts exposed to the surface of the front tongue, a soldering portion extending downwardly from the body, and being disposed in the insulating body and partially exposed to the first recess a fixing portion; a grounding shielding piece disposed between the first conductive terminal of the row and the second conductive terminal of the row, the grounding shielding piece comprising a main piece body and being bent downward from a rear portion of the main piece body Extend a folded edge and a soldering leg, each of the two sides of the main piece body is provided with an electrical connecting portion, the folded edge and the soldering leg projecting downward from the second concave portion, the folded edge separating the row a soldering portion of the first conductive terminal and a soldering portion of the second conductive terminal; an inner metal shell covering the insulating body, the inner metal shell including a base covering the rear tongue, from the base a laterally extending connecting portion and an elastic contact arm extending from the base portion, the lateral connecting portion is in contact with and electrically connected to the electrical connection portion of the grounding shielding piece, and the elastic contact arm passes through the The first recess is elastically crimped to the ground terminal to make electrical contact; and an outer shield is sleeved on the outer circumference of the insulating body and the inner metal shell, and is in electrical contact with the inner metal shell, the outer shield The peripheral space surrounding the tongue portion of the case forms a pair of cavities. The electrical connector of claim 16, wherein the portion of each of the ground terminals exposed to the corresponding first recess constitutes a contact segment that is laterally widened outwardly. The electrical connector of claim 16 or 17, wherein the first conductive terminal of the row and the second conductive terminal of the row each comprise two grounding terminals; the first recess comprises a top surface disposed on the upper and lower surfaces of the rear tongue plate Four first recesses, a portion of the ground terminals are exposed to the first recesses, and the resilient contact arms of the inner metal shell pass through the first recesses and are resiliently crimped to the ground terminals. The electrical connector of claim 18, wherein the first recess further comprises a plurality of first holes disposed on an upper surface or a lower surface of the rear tongue plate, each of the first holes corresponding to a fixing portion of one of the conductive terminals The exposed part. The electrical connector of claim 16, wherein the fixing portion of the second conductive terminal of the row has a laterally offset portion such that the welded portion of the second conductive terminal of the row and the welded portion of the first conductive terminal of the row are Staggered in the horizontal direction. The electrical connector of claim 20, wherein the second conductive terminal of the row is divided into two portions, and the laterally offset segments of the two portions of the conductive terminals are each laterally offset laterally to the sides. The electrical connector of claim 16, wherein the two electrical connecting portions of the grounding shield are respectively protruded outwardly from opposite sides of the rear tongue. The electrical connector of claim 22, wherein the lateral connection of the inner metal casing clamps the electrical connection of the grounding shield and is soldered together. The electrical connector of claim 16, wherein the upper surface of the body of the insulative housing is provided with a third recess, and a portion of the fixed portion of the second conductive terminal of the row is exposed to the third recess. The electrical connector of claim 24, wherein the third recess comprises a third recess recessed in the body and a plurality of third holes disposed in a bottom of the third recess, the second row Upper and lower sides of the fixing portion of the conductive terminal are respectively exposed to the third groove and the third hole. The electrical connector of claim 24, wherein the outer shield has a top wall, a bottom wall, and two side walls connected between the top wall and the bottom wall, the top wall and/or the bottom The wall is provided with two inwardly projecting fastening structures; the front side of the main body of the insulative housing is recessed with two first receiving slots for receiving the two fastening structures, and the front side of the two first receiving slots It is in communication with the docking chamber. The electrical connector of claim 26, wherein the outer shielding shell is further provided with two locking elastic pieces protruding inwardly behind the two fastening structures; the third concave portion is adjacent to the main body of the insulating body The rear end of the recess has two second recesses for receiving the two snap tabs. The electrical connector of claim 26, wherein the main body of the insulative housing is provided with a fixing slot between the two first receiving slots; the inner metal shell further comprises a vertical bending extension from a rear end of the base An extension portion and a fastening portion further bent from a rear end of the extension portion, the fastening portion being correspondingly inserted and fixed in the fixing groove.