CN107681335B

CN107681335B - Electrical connector

Info

Publication number: CN107681335B
Application number: CN201610631221.8A
Authority: CN
Inventors: 童林; 王小安
Original assignee: Molex LLC
Current assignee: Molex LLC
Priority date: 2016-08-01
Filing date: 2016-08-01
Publication date: 2020-03-31
Anticipated expiration: 2036-08-01
Also published as: CN107681335A

Abstract

An electrical connector is provided that includes a dielectric body and a metal shell. The insulating body comprises a front body and a rear body, wherein the rear body is provided with a rear end part and a lower end part; the metal shell is provided with an inserting part and a rear part, a first accommodating space is formed in the inserting part, a shell bottom wall is arranged on at least one part of the lower part of the rear part, a second accommodating space is formed in the rear part, the front body of the insulating body is installed in the first accommodating space, the rear body is installed in the second accommodating space, and the shell bottom wall supports the lower end part of the rear body. The first blocking part is arranged between the inserting part and the rear part of the metal shell, the second blocking part is arranged between the front body and the rear body of the insulating body, the second blocking part of the insulating body can be blocked by the first blocking part of the metal shell, the rear part of the metal shell is provided with a rear blocking part, and the rear blocking part is abutted against the rear body of the insulating body. The electric connector with the structure has the advantages of convenient assembly, stable assembly structure and improved connection strength.

Description

Electrical connector

Technical Field

The present invention relates to an electrical connector and more particularly to a cable plug type electrical connector assembly.

Background

The assembly structure of the existing USB connector generally includes a metal shell, a terminal block with terminals, and a cable rear cover. The metal casing generally includes an upper casing and a lower casing, which form a receiving space. The terminal and the locking plate are accommodated in the terminal seat side by side, the front end of the terminal seat extends out of the front end of the upper cover shell, and the rear end of the terminal seat is arranged in the accommodating space. When the USB connector is subjected to an excessive or frequent pulling force during use, the joint structure between the metal shell and the terminal block has insufficient firmness, so that the connection is unreliable if the joint structure is light, and the connector structure is disassembled and damaged if the joint structure is heavy.

Taiwan utility model patent TWM308525 discloses a plug connector, which comprises a rubber core body and a metal shell 50, see fig. 1, wherein the metal shell 50 of the plug connector comprises an upper metal shell 30 and a lower metal shell 40 to form a space for accommodating the rubber core body. The rubber core body comprises an insulating body, and a terminal group 11 and a locking plate which are contained in the insulating body, wherein the insulating body comprises a base 13 and a tongue plate 14 formed by extending the middle part of the base 13 forwards. The upper metal case 30 has a rear cover 32 and a front cover 31. The first side plate 321 of the rear cover 32 extends outward to form a locking plate 323, the middle portion of the first side plate 321 extends forward to form a locking spring 324, and the lower end of the rear cover 32 is completely open. The metal shell 40 includes a bottom wall 41, a front wall 42 extending from the bottom wall 41, a rear wall 43 and two side walls 44, wherein the two side walls 44 are respectively provided with a fastening hole 441 corresponding to the fastening sheet 323 of the upper metal shell 30. In assembly, the rubber core body is first combined with the upper metal shell 30, the front portion of the first top plate 320 of the rear cover 32 of the upper metal shell 30 is fastened to the top surfaces of the base 13 and the rear cover 15 of the insulation body (rubber core body), and the retaining elastic sheet 324 at the front end of the first side plate 321 of the rear cover 32 is retained in the retaining groove 134 of the base 13. Then, the assembly of the rubber core body and the upper metal shell 30 is placed in the lower metal shell 40, and the clamping piece 323 and the clamping hole 441 are fastened. By the retaining spring 324 of the upper metal shell 30 being retained in the retaining groove 134 of the base 13 and the stop plate 316 of the front cover 31 being inserted into the insertion groove of the base 13, the insulation body (the rubber core body) can be prevented from moving backwards, thereby keeping the plug connector operating stably.

However, in the structure of the plug connector, the retaining spring 324 at the side of the upper metal shell 30 is locked in the structure of the retaining groove 134 of the side wall 132 of the insulating body, and the lower structure of the upper metal shell 30 is completely open. And because the lateral buckle needs to consider the matching of the two during assembly, the depth of the clamping groove 134 and the inward bending degree of the clamping elastic sheet 324 during assembly, the buckling strength of the lateral buckle also has room for improvement. Further, the lower portion of the upper metal shell 30 is completely open toward the lower side (i.e., the lower portion of the upper metal shell 30 is completely open-type structure, and none is closed), and it is difficult to stably support the insulator when the insulator is assembled in the upper metal shell 30 (and before the lower metal shell 40 is assembled).

Disclosure of Invention

In order to solve the above problems of the prior art, an object of the present invention is to provide an electrical connector which can enhance the assembling stability and strength of the insulating housing assembled on the metal shell, and improve the reliability and shielding performance of the connector.

To achieve the above object, the present invention provides an electrical connector that may include an insulative body and a metal housing. The insulating body can comprise a front body and a rear body, and the rear body is provided with a rear end part and a lower end part; the metal shell can be provided with an inserting part and a rear part, a first accommodating space is formed in the inserting part, the rear part is provided with a shell top wall and a shell side wall, at least one part of the lower part of the rear part is provided with a shell bottom wall, the shell bottom wall is connected with the shell side wall, the shell top wall, the shell side wall and the shell bottom wall form a second accommodating space, the front body of the insulating body is arranged in the first accommodating space, the rear body of the insulating body is arranged in the second accommodating space, and the shell bottom wall supports the lower end part of the rear body of the insulating body. The metal shell comprises a front body, a rear body and an insertion part, wherein the rear body is provided with a first blocking part, the insertion part is arranged between the rear part and the insertion part of the metal shell, the front body is provided with a second blocking part, the second blocking part of the insulation body can be blocked by the first blocking part of the metal shell, the rear part of the metal shell is provided with a rear stopper, and the rear stopper abuts against the rear body of the insulation body.

Therefore, the invention provides an electrical connector, the assembly installation of which is stable and reliable, the assembly structure and the connection strength are improved, and better shielding performance can be provided.

Other aspects, features and advantages of the present invention will be readily appreciated from the following description of the preferred embodiments of the invention. The scope of the present application is to be defined by the following claims.

Drawings

A further understanding of the invention can be facilitated by reference to the following drawings, which illustrate preferred embodiments of the invention. In the drawings:

fig. 1 is an exploded perspective view of a plug connector according to the prior art;

fig. 2 is an exploded perspective view of an electrical connector according to an embodiment of the present invention;

fig. 3 is an exploded perspective view of the electrical connector according to the embodiment of the present invention, viewed in another direction;

fig. 4 is a partially exploded perspective view of the electrical connector according to the embodiment, showing a state in which the insulative body of the electrical connector is assembled in the metal housing;

fig. 5 is a perspective view of the electrical connector according to the embodiment, showing a state in which respective components of the electrical connector are assembled;

fig. 6 is a perspective view of the electrical connector according to the embodiment, viewed in another direction;

fig. 7 is a side view of the electrical connector according to the embodiment of the present invention;

fig. 8 is a partially cut-away perspective view of the electrical connector of this embodiment taken along line X-X of fig. 7

Fig. 9 is a top view of the electrical connector according to this embodiment of the invention;

fig. 10 is a cross-sectional view of the electrical connector of this embodiment taken along line Y-Y of fig. 9;

FIG. 11 shows a schematic exploded perspective view of an electrical connector according to an embodiment of the present invention forming a cable; and

fig. 12 shows a perspective view of the electrical connector for cables of fig. 11.

List of reference numerals:

description of the related Art

Terminal group 11

Base 13

Side wall 132

Catching groove 134

Tongue plate 14

Rear cover 15

Upper metal shell 30

Front cover 31

Stopper plate 316

Rear cover 32

First side plate 321

Card fixing sheet 323

Retaining spring plate 324

Lower metal shell 40

Bottom wall 41

Front wall 42

Rear wall 43

Two side walls 44

Clamping hole 441

Metal shell 50

Inventive section

Electrical connector 10

Insulating body 100

Front body 110

Tongue plate 1102

Terminal contact portion 1104

Second stopper 1106

Rear body 120

Rear end portion 1202

Terminal board 1204

Terminal tail 1206

Lower end 1208

Guide part 1210

Bottom recess 1212

Metal shell 200

Plug-in part 210

First accommodation space 2102

First stopper 2104

Rear portion 220

Housing sidewall 2200

Second accommodation space 2202

Lower opening 2204

Elastic buckle piece (rear catch piece) 2206

Fastening hole 2208

Housing bottom wall 2210

Seam 2212

Snap-fastener portion 2214

Clamp wire 230

Lower metal cover 300

Lower lid bottom wall 310

Protruding extension piece 3102

Lower cover sidewall 320

Leading edge 3202

Convex buckle 3204

Electrical connector 400 for cable

First case 410

Second case 420

Cable 430

Detailed Description

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Throughout the description of this embodiment, like parts are indicated by like reference numerals (see the list of reference numerals above). Furthermore, the preferred embodiments illustrated in the drawings and described in detail below are to be understood as an example embodying the principles of the present application and are not intended to limit the application to only that embodiment expressed.

In the following description, expressions such as up/down, left/right, front/rear, and the like, which are used to explain the structure and action of the respective components of the present application, are not absolute, that is, the expressions are appropriate when the components are located at the positions shown in the drawings. However, if the description of the location of the component changes, then these representations should change accordingly.

Fig. 2 to 10 show an electrical connector according to the present invention. Fig. 2 and 3 are exploded perspective views of the electrical connector viewed in different directions, respectively, and fig. 4 is a partially exploded perspective view of the electrical connector, showing a state in which the insulating body of the electrical connector is assembled in the metal housing. Fig. 5 and 6 are perspective views of the electrical connector according to the embodiment, showing a state in which the components of the electrical connector are assembled.

Referring to fig. 2 and 3, the electrical connector 10 generally includes an insulative housing 100, a metal shell 200, and a lower metal cover 300.

The insulative housing 100 of the electrical connector 10 includes a front body 110 and a rear body 120, the front body 110 includes a tongue plate 1102, a plurality of terminals are embedded in the insulative housing 100, and a plurality of terminal contact portions 1104 are exposed at a lower surface of the tongue plate 1102. As shown in the drawings, an upper portion of a connection portion of the front body 110 and the rear body 120 is a shoulder configuration having a height difference, and forms a second stopper 1106, and the second stopper 1106 abuts against a first stopper 2104 of the metal case 200 to be described later. Although the second blocking portion 1106 is divided into two portions, respectively located at the left and right ends of the rear portion of the front body 110 in the illustrated embodiment, the second blocking portion 1106 may be provided as an integral portion. The rear body 120 has a rear end 1202, and a recess is recessed from the rear end 1202 toward the inside of the rear body 120, and a terminal plate 1204 is formed in the recess in the lateral direction, dividing the recess into a top recess (not shown) and a bottom recess 1212. An end face of the terminal plate 1204 is substantially flush with the surface of the rear end 1202, and a plurality of terminal tails 1206 project from the end face of the terminal plate 1204. The two sides of the rear body 120 are respectively recessed with a guiding portion 1210, and the guiding portion has an inclined surface portion for guiding the action of the elastic buckle piece 2206 (described later) when the electrical connector 10 is assembled in the metal housing 200. The lower end of the rear body 120 has a bottom or lower end 1208.

The metal housing 200 of the electrical connector 10 includes a plug 210 and a rear part 220, and a wire 230 for fixing a cable is connected to a rear end of the rear part 220. The insertion part 210 forms a first receiving space 2102 for receiving the front body 110 of the housing 100. As shown in the drawings, the connection portion of the plug portion 210 and the rear portion 220 of the metal shell 200 is also a shoulder structure with a height difference, and forms a first stop portion 2104. As described above, when the insulating body 100 is assembled to the metal shell 200, the first stop 2104 abuts against the second stop 1106 of the insulating body 100 (see fig. 10), thereby defining the forwardmost assembly position of the insulating body 100. Although the first and second stoppers in the present embodiment are each a shoulder structure formed by a height difference, other forms of stopper structures are also possible. For example, when the insulating body 100 is assembled into the metal shell 200, as shown in fig. 10, the rear edge of the bottom surface of the inserting portion 210 of the metal shell 200 may also serve as a first stopping portion for stopping the insulating body 100, and the front end of the rear body 120 of the insulating body 100 may serve as a second stopping portion for abutting engagement with the first stopping portion.

The upper side of the rear portion 220 of the metal housing 200 has a housing top wall (not labeled), and both sides of the rear portion 220 have housing sidewalls 2200, and both housing sidewalls 2200 have elastic fastening pieces 2206 and fastening holes 2208 formed thereon, wherein the elastic fastening pieces 2206 are located at the front side of the fastening holes 2208 along the assembling direction of the insulating body 100. The resilient tab 2206 is configured to engage against the rear end 1202 of the rear body 120 of the housing 100 to limit the rearward movement of the housing 100 during assembly of the electrical connector 10; more specifically, when the insulating body 100 is pushed into and positioned in the metal housing 200, the elastic buckle piece 2206 is guided by the guide portion 1210 on the side portion of the rear body 120 of the insulating body 100, abuts and is locked to the rear end portion 1202 of the insulating body 100 via the inclined surface portion, so as to cooperate with the first stop portion 2104 to position the insulating body 100 in a proper position in the metal housing 200, and the elastic buckle piece 2206 may also be referred to as a back stop. Besides the structure of the elastic buckle 2206 in the present embodiment, the back stopper can also be other structures suitable for stopping the back body 120 of the insulating body 100 from the back, and the position of the back stopper is not limited to the housing sidewall 2200 of the metal housing 200. The fastening hole 2208 is used for being fastened with a convex fastener 3204 formed on the lower cover sidewall 320 of the lower metal cover 300 when the lower metal cover 300 is assembled to the metal housing 200 (which will be described later). In the illustrated embodiment, the elastic button pieces 2206 and the button holes 2208 are substantially at the same horizontal position on the side of the metal housing 200 (as shown in fig. 8), but the present invention is not limited thereto. For example, the button holes 2208 may be located at a higher level than the elastic buttons 2206.

The rear portion 220 of the metal shell 200 has a second receiving space 2202 for receiving the rear body 110 of the insulative housing and a lower metal cover 300, which will be described below. In the illustrated embodiment, the lower end of the rear portion 220 is a half-open structure. Specifically, a front portion of the lower end portion of the rear portion 220, i.e., a portion near the plug portion 210, has a housing bottom wall 2210, the housing bottom wall 2210 abutting and supporting the lower end portion 1208 of the rear body 120 of the insulation body 100 when the insulation body 100 is assembled in the metal housing 200; and a lower opening 2204 is formed at the rear portion of the lower end of the rear portion 220, i.e., a portion relatively far from the socket portion 210. In other words, the lower portion of the second housing space 2202 is only partially closed by the bottom wall 2210, and is open at the lower opening 2204. In addition, in the illustrated embodiment, the seam 2212 in the bottom wall 2210 has a fastening portion 2214 for improving the bonding strength, and the fastening portion 2214 may be a deformed pressure point at the seam 2212 or a welded structure.

The lower metal cover 300 includes a lower cover bottom wall 310 and lower cover sidewalls 320 at both sides. Projecting tab 3102 projects forwardly from the front of lower cover bottom wall 310, and projecting tab 3102 has a raised height relative to lower cover bottom wall 310 that is substantially equivalent to the thickness of lower cover bottom wall 310 such that the lower surface of lower cover bottom wall 310 is flush with the lower surface of housing bottom wall 2210 after lower metal cover 300 is installed. The lower cover side wall 320 has a stepped configuration with a front portion of smaller height having a leading edge 3202, and a rear portion of the lower cover side wall 320 having a male buckle 3204 located adjacent the rear edge of the side wall. As mentioned above, in the assembly of the electrical connector 10, after the insulative housing 100 is placed in the metal housing 200, the convex catch 3204 is engaged with the catch hole 2208 formed on the sidewall of the rear portion 220 of the metal housing 200 when the lower metal cover 300 is assembled to the metal housing 200; meanwhile, the front edge 3202 of the lower cover sidewall 320 abuts against the rear end 1202 of the rear body 120 of the insulating body 100 together with the elastic catch 2206 of the metal housing 200 and stops the movement of the insulating body 100 in the front-rear direction, while the front portion of the lower cover sidewall 320 is located below the elastic catch 2206 (this is more clearly shown in fig. 10); in addition, the projecting piece 3102 of the lower cover bottom wall 310 projects into the bottom recess 1212 of the insulating body 100 and is pressed against the housing bottom wall 2210 of the metal housing 200, and both sides of the projecting piece 3102 abut on the portion of the bottom recess 1212 abutting the housing bottom wall 2210.

Referring to fig. 4, the insulative housing 100 is shown in a state where it is disposed inside the metal housing 200 and the lower metal cover 300 is not assembled, wherein the elastic buckle 2206 is stopped at the rear end 1202 of the insulative housing 100. Due to the cooperation of the first stop 2104 of the metal housing 200, the elastic buckle 2206 and the housing bottom wall 2210, the insulation body 100 can be stably positioned in the metal housing 200 before the lower metal cover 300 is assembled. As can also be seen in fig. 4, the rear body 120 of the insulating body 100 is disposed at the front of the second receiving space 2202, and the rear end 1202 thereof may be substantially flush with the rear edge of the housing bottom wall 2210.

Fig. 5 and 6 show perspective views of the assembled electrical connector 10. As shown in fig. 5, the front body 110 (the tongue plate 1102) of the insulating body 100 is located in the first receiving space 2102 of the inserting portion 210 of the metal housing 200, and the first stop 2104 of the metal housing 200 abuts against the second stop 1106 of the insulating body 100. As can be seen from fig. 6, the lower metal cover 300 is assembled to the rear of the second receiving space 2202 of the metal housing 200, and its bottom surface is substantially flush with the bottom surface of the housing bottom wall 2210. In addition, in the side view of the electrical connector 10 in fig. 7, a state that the first stopping portion 2104 of the metal shell 200 is abutted and matched with the second stopping portion 1106 of the insulating body 100 is more clearly shown.

Fig. 8 is a partial sectional perspective view taken along line X-X of fig. 7, in which the engagement of the protruding tab 3102 of the lower metal cover 300 with the bottom recess 1212 of the rear body 120 of the insulative body 100, the engagement of the resilient catch 2206 of the metal housing 200 with the rear end 1202, and the engagement of the catch hole 2208 with the male catch 3204 of the lower metal cover 300 are more clearly shown. Fig. 9 shows the assembled electrical connector 10 in a top view. Fig. 10 shows an assembled state of the insulating body 100, the metal housing 200 and the lower metal cover 300 in the electrical connector 10 in a side sectional view taken along line Y-Y of fig. 9. As can be seen from the figure, the protruding pieces 3102 of the lower metal cover 300 can overlap the housing bottom wall 2210 of the metal housing 200, whereby not only more stable connection and support can be achieved, but also an excellent shielding effect can be further obtained.

Fig. 11 and 12 show an application example of the electrical connector 10 according to the embodiment of the present invention constituting an electrical connector 400 for a cable. As can be seen in fig. 11, the electrical connector 400 for cables further includes an outer covering shell and a cable 430. Cable 430 has a core wire connected to each terminal tail 1206, and clamp wire 230 is used to hold cable 430, typically a stripped shield of an insulating sheath, typically a conductive braid, which may also be turned inside out of the insulating sheath. In this embodiment, the outer covering shell includes a first shell 420 and a second shell 410, and the first shell 420 and the second shell 410 are used for inner and outer covering of the electrical connector respectively, and they may be integrally injection-molded covering by using insulating material or assembled by using a kit in the form of a sleeve, and fig. 12 shows the assembled electrical connector for cable.

As described above, in the electrical connector of the present invention, the metal housing is an integral structure and includes a smaller insertion portion and a larger rear portion, the insertion portion and the front portion have a first stop portion (wall surface with a height difference between the insertion portion and the upper wall of the rear portion) with a step difference (height difference), the insertion portion has a first receiving space formed by surrounding wall surfaces, the front portion of the rear portion has a second receiving space formed by surrounding wall surfaces (including the top wall, the side wall and the bottom wall), and two side walls of the rear portion of the metal housing are respectively provided with inward rear stoppers (elastic buckling pieces). The insulating body comprises a smaller front body and a larger rear body, and a second blocking part with a height difference is formed between the front body and the rear body (a wall surface with the height difference between the upper walls of the front body and the rear body, wherein the upper cambered surface and the lower cambered surface of the front wall surface and the front wall surface of the two side blocks are shown in the figure). In addition, the front body of the insulating body is arranged in the first space of the metal shell, the rear body is arranged in the second space of the metal shell, the front blocking structure (the second blocking part of the insulating body can be blocked by the first blocking part of the metal shell) blocks the forward movement of the insulating body relative to the metal shell, and the rear blocking structure (the elastic buckle pieces are blocked at two sides of the rear end of the insulating body) blocks the backward movement of the insulating body relative to the metal shell.

According to the electrical connector of the present invention, the front body of the insulating body is mounted in the first space of the metal housing, the rear body is mounted in the second space of the metal housing, and the front blocking structure (the first and second blocking portions) and the rear blocking structure (the rear blocking member and the lower metal cover) are provided, so that the insulating body can be stably assembled in the metal housing. The front end of the elastic buckle piece is directly blocked at two sides of the rear end of the insulating body, so that the blocking strength is further improved. Moreover, the lower metal cover is blocked at two sides of the rear end of the insulating body, so that the assembly of the insulating body on the metal shell can be further enhanced, and the structure that the convex extending pieces of the lower metal cover are overlapped on the bottom wall surface of the second space is further enhanced, so that the stability, the convenience and the assembly strength of the assembly of the insulating body on the metal shell are improved.

Although the preferred embodiments of the present invention have been described above with reference to exemplary examples, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. In addition, in addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.

Claims

1. An electrical connector, comprising:

an insulating body (100) comprising a front body (110) and a rear body (120), the rear body (120) having a rear end (1202) and a lower end (1208);

a metal housing (200) having a plug part (210) and a rear part (220), a first receiving space (2102) is formed in the plug part (210), the rear part (220) has a housing top wall and a housing side wall (2200), and a housing bottom wall (2210) is provided on at least a part of a lower portion of the rear portion (220) of the metal housing (200), the housing bottom wall (2210) being connected to the housing side wall (2200), and the top wall of the housing, the side wall of the housing (2200) and the bottom wall of the housing (2210) form a second accommodating space (2202), the front body (110) of the insulating body (100) is arranged in the first accommodating space (2102), and the rear body (120) of the insulating body (100) is mounted in the second housing space (2202), the housing bottom wall (2210) supporting a lower end (1208) of the rear body (120) of the insulating body (100); and

a lower metal cover (300) mounted on the metal housing (200) and located at a rear end portion (1202) of the rear body (120) of the insulating body (100), the lower metal cover (300) including a lower cover bottom wall (310) and a lower cover side wall (320),

wherein a first stopping portion (2104) is arranged between the inserting portion (210) and the rear portion (220) of the metal housing (200), a second stopping portion (1106) is arranged between the front body (110) and the rear body (120) of the insulating body (100), the second stopping portion (1106) of the insulating body (100) can be stopped by the first stopping portion (2104) of the metal housing (200), the rear portion (220) of the metal housing (200) is provided with a rear stopper (2206), the rear stopper (2206) abuts against the rear body (120) of the insulating body (100), and

the rear body (120) of the insulating body (100) has a bottom recess (1212), and the lower cover bottom wall (310) of the lower metal cover (300) has a protruding tab (3102), the protruding tab (3102) overlapping the upper surface of the housing bottom wall (2210) and shielding the bottom recess (1212).

2. The electrical connector of claim 1, wherein the rear stop (2206) is a resilient tab disposed on the housing sidewall (2200) on both sides of the rear portion (220).

3. The electrical connector according to claim 1, wherein a lower opening (2204) is formed at a portion of a lower portion of the rear portion (220) of the metal housing (200) where the housing bottom wall (2210) is not formed, the lower cover bottom wall (310) shielding the lower opening (2204).

4. The electrical connector according to claim 1, wherein the projecting piece (3102) overlapping the housing bottom wall (2210) has a height difference with respect to the lower cover bottom wall (310) so that the lower surface of the lower cover bottom wall (310) is flush with the lower surface of the housing bottom wall (2210).

5. The electrical connector of claim 3, wherein the lower cover sidewall (320) of the lower metal cover (300) is stepped to have a front portion with a smaller height, and a front edge (3202) of the front portion abuts against both sides of the rear end portion (1202) of the rear body (120) of the insulative body (100).

6. The electrical connector of claim 5, wherein the front of the lower cover sidewall (320) is located below the back stop (2206).

7. The electrical connector of claim 2, wherein the side of the rear body (120) of the insulating body (100) is provided with a guide (1210) for guiding the elastic buckle piece (2206) during assembly.

8. The electrical connector according to claim 3, wherein the housing side wall (2200) of the metal housing (200) is provided with a catching hole (2208), and the lower cover side wall (320) of the lower metal cover (300) is provided with a male buckle (3204), the male buckle (3204) being fitted in the catching hole (2208).

9. The electrical connector of claim 1, wherein the first stop portion (2104) is a shoulder structure formed by a height difference at a connection portion between the inserting portion (210) and the rear portion (220) of the metal housing (200), and the second stop portion (1106) is an integral shoulder structure formed by a height difference at a connection portion between the front body (110) and the rear body (120) of the insulating body (100).

10. The electrical connector of claim 1, wherein the first stop portion (2104) is a shoulder structure formed by a height difference at a connecting portion between the inserting portion (210) and the rear portion (220) of the metal housing (200), and the second stop portion (1106) is two separated shoulder structures formed by a height difference at two end portions of the connecting portion between the front body (110) and the rear body (120).