CN116646760A

CN116646760A - Electric connector assembly and assembling method thereof

Info

Publication number: CN116646760A
Application number: CN202310395674.5A
Authority: CN
Inventors: 冯晓
Original assignee: Zhongshan Yide Electronics Co ltd
Current assignee: Zhongshan Yide Electronics Co ltd
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-08-25

Abstract

The invention discloses an electrical connector assembly comprising: the plastic frame is provided with an accommodating space, and the connecting wall positioned at the rear side of the plastic frame is provided with a first channel and a second channel which are mutually separated; the terminal assembly is provided with an insulating body and a plurality of conductive terminals, the insulating body is provided with a butt joint part and a base part, the butt joint part penetrates through the first channel and enters the accommodating space, the inner wall surface of the first channel stops the butt joint part in the up-down and left-right directions, the connecting wall stops the base part from moving forwards, and the base part is provided with a stop part; the metal shell is arranged in the accommodating space from front to back, the left side wall and the right side wall of the accommodating space stop the metal shell from moving backwards, the metal shell is provided with a containing cavity and an extending wall positioned at one side of the containing cavity, the extending wall is provided with a blocked part, the extending wall extends backwards into a second channel, the extending wall is blocked by the second channel along the up-down direction, and the blocked part is blocked and matched with the blocking part to limit the base part from moving backwards and limit the metal shell from moving forwards; thus, the metal shell and the terminal assembly can be stably fixed on the plastic frame.

Description

Electric connector assembly and assembling method thereof

[ field of technology ]

The present invention relates to an electrical connector assembly and an assembly method thereof, and more particularly, to an electrical connector assembly and an assembly method thereof capable of stably fixing a metal shell and a terminal assembly to a plastic frame.

[ background Art ]

An electrical connector assembly is provided, which includes an insulating housing and a metal shell fixed to the insulating housing, wherein a terminal module is accommodated in the metal shell. The upper surface of the insulating outer frame is provided with a containing groove in a downward concave mode and a clamping groove in an outward concave mode from the left side wall or the right side wall of the containing groove, the metal shell is provided with an outer convex spring plate corresponding to the clamping groove, the metal shell is provided with an inner convex spring plate corresponding to the clamping position of the terminal module, when the electric connector assembly is assembled, the terminal module is assembled into the metal shell firstly, the inner convex spring plate is clamped with the terminal module, the metal shell covers the whole terminal module butt joint connector, the terminal module and the metal shell are assembled in the insulating outer frame together from top to bottom, the outer convex spring plate moves downwards into the clamping groove, the inner wall surface of the clamping groove stops the outer convex spring plate to move in the up-down and front-back directions, and then the metal shell is fixed on the insulating outer frame.

However, because the metal shell wraps the whole terminal module, the terminal module and the insulating outer frame are not provided with any fastening structure, so that the electric connection seat cannot be stably abutted with the abutting connector only through the metal shell, the convex elastic sheet and the clamping groove of the insulating outer frame are clamped and fixed, when the electric connector component is plugged with the abutting connector, the convex elastic sheet can displace and even separate from the clamping groove due to the action of pulling and inserting force, once the convex elastic sheet displaces and even separate from the clamping groove due to the action of pulling and inserting force, the terminal module and the metal shell can displace and even separate from the insulating outer frame together, the electric connection seat cannot be stably abutted with the abutting connector, and moreover, because the convex elastic sheet is installed in the insulating outer frame before the electric connection seat, each convex elastic sheet can scratch and drop the inner wall surface of the corresponding clamping groove easily, the inner wall surface of the clamping groove is easily caused, once the convex elastic sheet displaces and even separate from the clamping groove due to the action of pulling and inserting force, the terminal module cannot be stably abutted with the abutting connector, and the abutting connector cannot be stably abutted with the outer frame.

Therefore, there is a need to design an electrical connector assembly and an assembly method thereof to solve the above-mentioned problems.

[ invention ]

The invention aims at providing a first channel and a second channel on a connecting wall of a plastic frame, enabling a butt joint part of a terminal assembly to pass through the first channel forwards and be arranged behind the connecting wall with a base part of the terminal assembly, enabling the peripheral inner wall surface of the first channel to stop the butt joint part upwards and downwards and leftwards and upwards, stopping the front side of the base part on the rear side of the connecting wall, and arranging a stopping part on the base part, wherein a metal shell is mounted on the plastic frame from front to back, the left side wall and the right side wall of a containing space of the plastic frame stop the left side and the right side of the metal shell, the connecting wall stops the rear end of the metal shell, and the metal shell is provided with an electric connector assembly which is penetrated backwards through the second channel by the stopping part and is matched with the stopping part in a stopping mode to limit the backward displacement of the terminal assembly and limit the forward displacement of the metal shell.

In order to achieve the above purpose, the invention adopts the following technical scheme:

an electrical connector assembly, comprising: the plastic frame is characterized in that the front surface of the plastic frame is concavely provided with an accommodating space and a connecting wall positioned at the rear side of the accommodating space, the connecting wall is provided with a first channel and a second channel which are mutually spaced, the second channel is positioned at the periphery of the first channel, and the first channel and the second channel respectively penetrate through the connecting wall along the front-rear direction and are communicated with the accommodating space; the terminal assembly is provided with an insulating body and a plurality of conductive terminals which are fixedly held on the insulating body, the insulating body is provided with a butt joint part and a base part which is positioned behind the butt joint part, the base part is assembled on the rear side of the plastic frame, the butt joint part passes through the first channel from back to front and enters the accommodating space, the butt joint part is blocked by the inner wall surfaces around the first channel in the up-down direction and the left-right direction, the front side of the base part is blocked by the rear side of the connecting wall to prevent the base part from moving forwards, and the base part is provided with at least one blocking part; the metal shell is installed in the accommodating space from front to back, the left side wall and the right side wall of the accommodating space block the left side and the right side of the metal shell, the connecting wall is used for blocking the rear end of the metal shell from moving backwards, the metal shell is provided with a containing cavity penetrating through the containing cavity in the front-back direction and an extending wall located on one side of the containing cavity, the extending wall is provided with at least one blocked part, the abutting part stretches into the containing cavity, the extending wall extends backwards into the second channel, the blocked part protrudes backwards out of the second channel, the upper wall surface and the lower wall surface of the second channel block the extending wall in the up-down direction, and the blocked part is located behind the connecting wall and is matched with the blocking part in a blocking mode so as to limit the base to move backwards and limit the metal shell to move forwards.

Further, the second channel has an upper channel and a lower channel that are spaced from each other along the up-down direction, the width of the upper channel is greater than the width of the lower channel along the left-right direction, the first channel is disposed between the upper channel and the lower channel along the up-down direction, and the upper channel and the lower channel are respectively communicated with the accommodating space in the front-back direction, the extension wall is formed by extending backwards from the top wall of the accommodating cavity, and the metal shell is formed by extending backwards from the bottom wall of the accommodating cavity, the width of the extension wall is greater than the width of the extension wall along the left-right direction, and the extension wall is correspondingly inserted into the upper channel, and the extension wall is correspondingly inserted into the lower channel.

Further, a groove is concavely formed in the upper surface of the base, the blocking portion is arranged on the upper surface of the base and located in front of the groove, when the extending wall passes through the upper channel backwards, the extending wall is located above the blocking portion, the blocked portion bends downwards and stretches into the groove, and the blocking portion is located in front of the blocked portion to block the metal shell from moving forwards.

Further, the number of the blocked portions is two, each blocked portion extends in the left-right direction and is arranged in a cantilever manner, the two blocked portions are mutually spaced in the left-right direction, the free ends of the two blocked portions are mutually close to each other, and the two blocked portions are bent towards the groove, so that the side surfaces of the blocked portions are opposite to the rear surface of the blocking portion so as to prop against the blocking portion.

Further, the height of the lower inner wall surface of the upper passage is equal to or higher than the stopper portion in the up-down direction.

Further, the extension wall is provided with at least one elastic piece which is bent upwards and forwards, the front end of the upper wall surface of the lower channel is extended backwards and downwards in an inclined mode, the distance from the front end of the inclined surface to the lower wall surface of the lower channel is larger than the height of the elastic piece along the up-down direction, the distance from the rear end of the inclined surface to the lower wall surface of the lower channel is smaller than the height of the elastic piece, when the extension wall passes through the lower channel from front to back, the elastic piece protrudes backwards out of the lower channel, and the free end of the elastic piece abuts against the rear end surface of the connecting wall.

Further, the second channel has two side channels that are spaced apart from each other along left and right directions, two side channels are located respectively the left and right sides of first channel and communicate forward the accommodating space, the terminal assembly has a shielding piece, a plurality of conductive terminals arrange into upper and lower two rows and expose respectively in the upper and lower surface of butt joint portion, the shielding piece is located two rows between the conductive terminals, just shielding piece left and right sides is protruding respectively to be equipped with an elasticity butt joint portion, elasticity butt joint portion protrusion is outside the basal portion, the left and right sides of metal casing corresponds respectively two side channels is equipped with two the grounding portion, the grounding portion stretches into from forward backward the side channel and with elasticity butt joint portion butt joint.

Further, a limiting wall is extended relatively at the top of the left and right side walls of the accommodating space, a hollowed-out groove is concavely formed between the two limiting walls of the plastic frame, the front surface of the limiting wall is flush with the front surface of the plastic frame, the limiting wall stops the metal shell from upwards displacing, the hollowed-out groove is communicated with the accommodating space in the upper and lower directions, at least one first spring arm protruding downwards is integrally extended from the top wall of the accommodating cavity, the first spring arm can elastically deform towards the hollowed-out groove, a shielding shell is coated outside the plastic frame, at least one second spring arm is bent downwards and is staggered with the first spring arm, and the second spring arm penetrates through the hollowed-out groove and is abutted to the top wall of the accommodating cavity.

Further, the plastic frame is provided with a fool-proof lug in the accommodating space and is connected with the connecting wall, the fool-proof lug is arranged at the lower side of the first channel, the metal shell is provided with a fool-proof groove corresponding to the fool-proof lug, the front side of the metal shell faces the accommodating cavity and is bent to form a fool-proof elastic sheet, the fool-proof elastic sheet is positioned right in front of the fool-proof groove, and when the metal shell is assembled in the accommodating space, the fool-proof lug enters the fool-proof groove and stretches into the accommodating cavity, and the projection of the fool-proof lug does not exceed the projection of the fool-proof part upwards when seen along the front-back direction.

Further, the plastic frame is concavely provided with an assembly groove from the back to the front, the assembly groove is positioned at the rear of the connecting wall, the second channel is surrounded outside the assembly groove when seen from the back to the front, the assembly groove is communicated with the accommodating space through the first channel in the front and the back, the butt joint part sequentially passes through the assembly groove and the first channel from the back to the front, at least part of the base part is accommodated in the assembly groove, and the inner wall surface of the assembly groove stops the base part in the up-down and left-right directions.

Further, the upper surface of the base is provided with two receding grooves in a downward concave manner, the two receding grooves are positioned at the left side and the right side of the stop part and are all open forwards, the bottom wall of each receding groove is provided with an interference part in an upward convex manner, two limiting walls which are mutually spaced along the left-right direction and a limiting groove positioned between the two limiting walls are arranged above the assembly groove, the two limiting walls correspond to the two receding grooves, when the terminal assembly is mounted in the plastic frame, the stop part stretches into the limiting groove, each limiting wall is positioned in the corresponding receding groove and stops the stop part in the left-right direction, and the interference part and the limiting walls mutually interfere to enable the base to be fixed in the assembly groove.

Further, the plastic frame is concavely provided with a heightening groove from back to front, the heightening groove is positioned below the assembling groove and is communicated with the assembling groove, the terminal assembly is provided with a heightening seat, each conductive terminal is provided with a contact part, a heightening part and a bending part connected between the contact part and the heightening part, the lower end of the heightening part is also connected with a welding part, the contact part is fixedly arranged at the butt joint part and is inserted into the accommodating space from back to front, the heightening part is fixedly arranged in the heightening seat and is assembled in the heightening groove, an electric connecting seat is accommodated in the accommodating groove, and the electric connecting seat is provided with a plurality of conductive contacts, each conductive contact is provided with a welding leg, and the welding part and the welding leg extend downwards beyond the lower surface of the plastic frame to be welded with a circuit board.

In addition, an assembling method of the electric connector assembly is characterized by comprising the following steps: step 1: providing a plastic frame, wherein the plastic frame is concavely arranged from front to back to form an accommodating space and a connecting wall positioned behind the accommodating space, the connecting wall is formed with a first channel and a second channel which are mutually spaced, the second channel is formed at the periphery of the first channel, and the first channel and the second channel respectively penetrate through the connecting wall along the front and back direction and are communicated with the accommodating space; step 2: providing a terminal assembly, wherein the terminal assembly comprises an insulating body and a plurality of conductive terminals fixed on the insulating body, the insulating body is provided with a butt joint part and a base part positioned behind the butt joint part, and at least one stop part step 3 is formed on the upper surface of the base part: providing a metal shell, wherein the metal shell is provided with a containing cavity penetrating front and back, one side of the containing cavity extends backwards to form an extending wall, and the rear side of the extending wall is stamped to form at least one blocked part; step 4: assembling the terminal assembly on the plastic frame from back to front, enabling the abutting part to penetrate through the first channel from back to front and extend into the accommodating space, enabling the surrounding inner wall surfaces of the first channel to stop the abutting part in the up-down direction and the left-right direction, and enabling the connecting wall to be located in front of the base part to stop the base part from moving forwards; step 5: assembling the metal shell in the accommodating space from front to back, so that the left side wall and the right side wall of the accommodating space block the left side and the right side of the metal shell, the connecting wall blocks the rear end of the metal shell from back to displace, the abutting part extends into the accommodating cavity from back to front, the extending wall passes through the second channel from front to back, and the blocked part moves along with the extending wall and then extends to the rear of the blocking part; step 6: after the step 5, the blocked part is bent towards the blocking part by a jig, so that the blocking part is blocked in front of the blocked part, and the backward displacement of the insulating body and the forward displacement of the metal shell are limited.

Further, in step 1, the second channel includes an upper channel and a lower channel spaced apart from each other in an up-down direction, and the first channel is located between the upper channel and the lower channel in the up-down direction, and a width of the upper channel is larger than a width of the lower channel in a left-right direction, the second channel further includes two side channels spaced apart from each other in the left-right direction, the first channel is located between the two side channels in the left-right direction, and any two of the two side channels, the upper channel, and the lower channel are spaced apart from each other.

In step 2, a groove is formed in the upper surface of the base portion in a concave manner, the blocking portion is located at the front side of the groove, in step 3, a slot is formed in the rear end of the extending wall in a concave manner, two blocked portions are formed by extending from left and right side walls of the slot in opposite directions, the two blocked portions are spaced apart from each other in the left and right directions, and free ends of the two blocked portions are close to each other.

In step 6, the two blocked portions are bent downward by the jig, so that the two blocked portions extend into the grooves, and the side surface of each blocked portion faces the rear surface of the blocking portion to be abutted against the blocking portion.

Further, in step 2, a plurality of conductive terminals arranged in two rows along an up-down direction and a shielding sheet arranged between the two rows of conductive terminals are provided, each conductive terminal has a contact portion, a raised portion and a bending portion connecting between the contact portion and the raised portion, the shielding sheet has a first shielding portion and a second shielding portion connected to each other along a front-back direction, the first shielding portion is arranged between the contact portions of the two rows of conductive terminals, and the second shielding portion is arranged between the raised portions of the two rows of conductive terminals; secondly, injection molding is carried out on the first shielding part and the contact part, injection molding is carried out on the heightening part and the second shielding part, a heightening seat is formed, the insulating body and the heightening seat are mutually spaced, the bending part is positioned between the insulating body and the heightening part which are mutually spaced, then the shielding sheet is cut, so that the first shielding part and the second shielding part are mutually spaced, finally the bending part is bent, the first shielding part and the second shielding part are mutually perpendicular, and the insulating body and the heightening part are mutually perpendicular, so that the terminal assembly is formed.

Compared with the prior art, the electric connector component and the assembly method of the electric connector component have the following advantages that

The beneficial effects are that:

according to the invention, the tongue part of the terminal assembly passes through the first channel from back to front, the inner wall surface of the first channel stops the tongue part in the up-down direction and the left-right direction, the metal shell is arranged in the accommodating space from front to back, and the left side wall and the right side wall of the accommodating space stop the left side and the right side of the metal shell, so that the fixing structures of the metal shell, the terminal assembly and the plastic frame are increased, and the metal shell, the terminal assembly and the plastic frame can be respectively fixed on the plastic frame, so that the terminal assembly can be stably abutted with a butt connector; and because the connecting wall is positioned in front of the base to stop the base from moving forward, the connecting wall is positioned behind the accommodating space to stop the metal shell from moving backward, and the extending wall of the metal shell passes through the second channel backward, the blocked part on the extending wall is matched with the blocking part of the base to form interlocking, so that the backward movement of the insulating body is limited, the forward movement of the metal shell is limited, the blocking part and the blocked part are interlocked, the terminal assembly and the metal shell can be limited to each other, the metal shell and the terminal assembly can be further fixed on the plastic frame, and the situation that the metal shell and the terminal assembly are separated from the plastic frame in the front-back direction under the action of a pulling-inserting force is avoided; the blocked part is bent after the metal shell is installed into the accommodating space from front to back, so that the blocked part is not scratched or worn to the blocked part, and the blocked part is not pressed by the inner wall of the second channel in the installation process to generate fatigue so as not to generate a situation of being propped against the blocked part, thereby ensuring the blocked part to be blocked stably, avoiding the front-back displacement of the metal shell and the terminal assembly, and enabling the electric connector assembly to be stably butted with a butt connector.

[ description of the drawings ]

FIG. 1 is an exploded perspective view of an electrical connector assembly of the present invention;

FIG. 2 is a schematic illustration of the metal shell and terminal assembly of the electrical connector assembly of the present invention without the plastic frame;

FIG. 3 is a schematic view of the terminal assembly of the electrical connector assembly of the present invention installed in the plastic frame, but with the metal shell not installed in the plastic frame;

FIG. 4 is a schematic view of the metal shell and terminal assembly of the electrical connector assembly of the present invention encased in a plastic frame, but without bending the blocked portion;

FIG. 5 is a schematic view of the metal shell and the terminal assembly of the electrical connector assembly of the present invention being mounted in a plastic frame and the blocked portion being bent;

FIG. 6 is a front-to-rear perspective view of a plastic frame of the electrical connector assembly of the present invention;

FIG. 7 is a rear-to-front perspective view of a plastic frame of the electrical connector assembly of the present invention;

fig. 8 is a perspective view of a metal shell of the electrical connector assembly of the present invention;

fig. 9 is a front view of an electrical connector assembly of the present invention;

FIG. 10 is a partial cross-sectional view of FIG. 9 at A-A;

FIG. 11 is a partial cross-sectional view of FIG. 9 at B-B;

fig. 12 is a partial perspective cross-sectional view of fig. 9 at C-C.

Reference numerals of the specific embodiments illustrate:

[ detailed description ] of the invention

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

As shown in fig. 1 to 12, the electrical connector assembly 100 and the assembly method of the electrical connector assembly 100 of the present invention define a front-back direction, a left-right direction and an up-down direction perpendicular to the front-back direction. For the convenience of understanding the drawings, the forward direction in the front-rear direction is the positive direction of the X axis, the rightward direction in the left-right direction is the positive direction of the Y axis, and the upward direction in the up-down direction is the positive direction of the Z axis.

As shown in fig. 1 and 9, an electrical connector assembly 100 includes: a plastic frame 1, a terminal assembly 2 is mounted on the plastic frame 1 from back to front, the terminal assembly 2 has an insulating body 21, a raised seat 22, a plurality of conductive terminals 23 and a shielding sheet 24 which are fixedly held on the insulating body 21 and the raised seat 22, a metal shell 3 is mounted on the plastic frame 1 from front to back, the metal shell 3 is partially coated outside the terminal assembly 2, an electrical connection seat 4 is assembled in the plastic frame 1 from front to back, the electrical connection seat 4 is positioned under the insulating body 21, and a shielding shell 5 is coated outside the plastic frame 1 and is grounded and conducted with the metal shell 3.

As shown in fig. 1, 6 and 9, the front surface of the plastic frame 1 is concavely provided with a receiving space 11, the metal shell 3 is mounted in the receiving space 11 from front to back, and the left and right side walls of the receiving space 11 block the left and right sides of the metal shell 3, so as to prevent the metal shell 3 from moving in the left and right direction. The lower wall of the accommodating space 11 is located below the metal shell 3 to prevent the metal shell 3 from being displaced downward. The top of the left and right side walls of the accommodating space 11 extend a limiting wall 111 respectively, a hollow groove 112 is concavely formed between the two limiting walls 111 of the plastic frame 1, and the front surface of the limiting wall 111 is flush with the front surface of the plastic frame 1, so that the metal shell 3 can only be installed in the accommodating space 11 from front to back, but cannot be installed in the accommodating space 11 from top to bottom, and the two limiting walls 111 can stop the metal shell 3 from moving upwards. The hollow groove 112 is located above the accommodating space 11, and the hollow groove 112 is communicated with the accommodating space 11 in the up-down direction, so that the shielding shell 5 is grounded and conducted with the metal shell 3 through the hollow groove 112, and the shielding effect of the metal shell 3 is enhanced.

As shown in fig. 1, 2 and 9, the plastic frame 1 is further provided with a foolproof protrusion 113 in the accommodating space 11, and the foolproof protrusion 113 is used for preventing the metal shell 3 from being reversely inserted into the accommodating space 11. The fool-proof bump 113 is located at the rear side of the accommodating space 11, the lower surface of the fool-proof bump 113 is connected with the lower wall of the accommodating space 11, and the right side wall of the fool-proof bump 113 is connected with the right side wall of the accommodating space 11. The fool-proof bump 113 is step-shaped (of course, in other embodiments, the fool-proof bump 113 may be provided in a boss shape or other shapes), and the fool-proof bump 113 has a first step 1131 and a second step 1132 located on the right side of the first step 1131, and the height of the first step 1131 is lower than the height of the second step 1132 along the up-down direction.

As shown in fig. 2, 6, 7, 9, 10 and 11, the plastic frame 1 further includes a connecting wall 12, the connecting wall 12 has a front end surface 121 and a rear end surface 122 along the front-rear direction, and the front end surface 121 of the connecting wall 12 is located behind the accommodating space 11 and is connected to the rear surface of the fool-proof bump 113. The connecting wall 12 is provided with a first channel 123 and a second channel 124 spaced apart from each other, the second channel 124 is located at the periphery of the first channel 123, and the first channel 123 and the second channel 124 respectively penetrate through the connecting wall 12 along the front-rear direction and are communicated with the accommodating space 11. The first channel 123 is used for the insulation body 21 to extend from back to front, and the fool-proof bump 113 is disposed at the lower side of the first channel 123.

As shown in fig. 2, 6, 7, 9, 10 and 11, the second passage 124 has an upper passage 1241 and a lower passage 1242 spaced apart from each other in the up-down direction, and two side passages 1243 spaced apart from each other in the left-right direction, and any two of the upper passage 1241, the lower passage 1242 and the two side passages 1243 are spaced apart from each other and independent of each other. Moreover, the connecting wall 12 is provided with a resisting part 125 not only between the upper side of each side passage 1243 and the upper passage 1241, but also between the lower side of each side passage 1243 and the lower passage 1242, that is, the connecting wall 12 is provided with the resisting parts 125 at four corners, and the connecting wall 12 is used for resisting the rearward displacement of the rear end of the metal shell 3 by the resisting parts 125.

As shown in fig. 2, 6, 7, 9, 10 and 11, the width of the upper passage 1241 is greater than the width of the lower passage 1242 in the left-right direction, the fool-proof protrusion 113 is disposed on the right side of the lower passage 1242 in the left-right direction, and the rear end of the fool-proof protrusion 113 is connected to the stopper 125 in the lower right corner. The first channel 123 is disposed between the upper channel 1241 and the lower channel 1242 along the up-down direction, and the upper channel 1241 and the lower channel 1242 are respectively connected to the accommodating space 11 along the front-back direction, and the two side channels 1243 are respectively located at the left and right sides of the first channel 123 and are respectively connected to the accommodating space 11.

As shown in fig. 2, 6, 7, 9, 10 and 11, the upper wall surface of the lower passage 1242 is inclined and extends from front to back and downward with an inclined surface 12421, and the distance between the front end of the inclined surface 12421 and the lower wall surface of the lower passage 1242 is greater than the distance between the rear end of the inclined surface 12421 and the lower wall surface of the lower passage 1242 in the up-down direction, so that the width of the front side of the lower passage 1242 in the up-down direction is greater than the width of the rear side of the lower passage 1242 in the up-down direction.

As shown in fig. 2, 6, 7, 9, 10 and 11, the plastic frame 1 is concavely provided with an assembling groove 13 from back to front, and the assembling groove 13 is located at the rear of the connecting wall 12. The second channel 124 is disposed around the assembly groove 13 when viewed in the back-to-front direction, specifically, the assembly groove 13 is located between the upper channel 1241 and the lower channel 1242 in the up-down direction and the assembly groove 13 is located between the two side channels 1243 in the left-right direction when viewed in the back-to-front direction. The assembly groove 13 communicates with the accommodating space 11 through the first channel 123 in the front-rear direction, so that the insulator 21 is assembled to the plastic frame 1 from the rear to the front. Two limiting walls 131 spaced apart from each other in the left-right direction and a limiting groove 132 between the two limiting walls 131 are arranged above the assembly groove 13, the two limiting walls 131 not only can limit the upward displacement of the insulating body 21, but also can limit the insulating body 21 in the left-right direction when the two limiting walls 131 and the limiting groove 132 are matched with each other. Two stop walls 133 are provided on the left and right sides of the assembly groove 13, and the projection of the two stop walls 133 is located between the two side passages 1243 as viewed in the back-to-front direction. Each of the stop walls 133 is further provided with a through slot 1331, the through slot 1331 penetrates the stop wall 133 in the left-right direction, and each of the through slots 1331 is communicated with the lateral channel 1243 outside the through slot.

As shown in fig. 2, 5, 6, 7, 9, 10 and 11, the plastic frame 1 is concavely provided with a raised groove 14 from back to front, the raised groove 14 is located below the assembly groove 13 and is communicated with the assembly groove 13, and the raised seat 22 is accommodated in the raised groove 14. The front surface of the plastic frame 1 is further provided with a receiving groove 15 in a concave manner, the receiving groove 15 is located below the receiving space 11 and in front of the heightening groove 14, the electrical connection seat 4 is received in the receiving groove 15, the electrical connection seat 4 is provided with a plurality of conductive contacts 41, each conductive contact 41 is provided with a soldering leg 411, and the soldering leg 411 extends downward beyond the lower side of the plastic frame 1 to be soldered with the circuit board.

As shown in fig. 1, 2, 5, 9, 10, 11 and 12, the insulating body 21 of the terminal assembly 2 has a butt joint portion 211 and a base portion 212 located behind the butt joint portion 211. When the insulating body 21 is assembled to the plastic frame 1 from the back to the front, the abutting portion 211 sequentially passes through the assembling groove 13 and the first channel 123 from the back to the front and extends into the accommodating space 11 forward, and the inner wall surfaces around the first channel 123 block the abutting portion 211 in the up-down direction and the left-right direction. The base 212 is assembled to the rear side of the plastic frame 1, and at least a part of the base 212 is accommodated in the assembly groove 13, and the inner wall surface of the assembly groove 13 blocks the base 212 in the up-down and left-right directions. At the same time, the base 212 is also located behind the rear end face 122 of the connecting wall 12, so that the rear end face 122 of the connecting wall 12 stops the front side of the base 212, thereby making it possible for the connecting wall 12 to prevent the base 212 from being displaced forward. The upper surface of the base 212 is further provided with a stopper 2121 (of course, the number of the stoppers 2121 may be two, three, etc. in other embodiments), and when the insulating body 21 is mounted on the plastic frame 1, the height of the lower inner wall surface of the upper passage 1241 and the stopper 2121 are higher than the stopper 2121 in the up-down direction (of course, the height of the lower inner wall surface of the upper passage 1241 and the stopper 2121 are equal in height in the up-down direction, in other embodiments), so that the metal shell 3 is inserted into the upper passage 1241 from front to back. The upper surface of the base 212 is concavely provided with a groove 2122, and the stopper 2121 is located in front of the groove 2122. The left and right sides and the rear side of the groove 2122 are respectively provided with a stopper wall (not numbered, the same applies hereinafter) which stoppers the metal shell 3 in the left and right direction and the rear. The upper surface of the base 212 is further provided with two concave yielding grooves 2123, the two yielding grooves 2123 are located at left and right sides of the left and right side walls of the retaining portion 2121 and the groove 2122, the two yielding grooves 2123 are all open forward, an interference portion 2124 is protruding upward from the bottom wall of each yielding groove 2123, the two yielding grooves 2123 correspond to the two limiting walls 131, when the terminal assembly 2 is mounted on the plastic frame 1, the retaining portion 2121 extends into the limiting groove 132, each limiting wall 131 is located in the corresponding yielding groove 2123 and retains the retaining portion 2121 in the left and right direction, and the interference portion 2124 and the limiting wall 131 interfere with each other to fix the base 212 in the assembly groove 13.

As shown in fig. 1, 5 and 10, the raised seat 22 of the terminal assembly 2 and the insulating body 21 are spaced apart from each other and perpendicular to each other, and the raised seat 22 is assembled in the raised groove 14 from the rear to the front.

As shown in fig. 1, 2, 5, 9, 10, 11 and 12, the plurality of conductive terminals 23 of the terminal assembly 2 are arranged in two rows along the left-right direction, each of the conductive terminals 23 has a contact portion 231, a raised portion 232 and a bending portion 233 connecting between the contact portion 231 and the raised portion 232, and a welding portion 234 is further connected to the lower end of the raised portion 232. The contact portions 231 of the plurality of conductive terminals 23 are held on the insulating body 21 and inserted into the accommodating space 11 from the rear to the front for mating with a mating connector (not shown, the same applies below). The contact portions 231 of the plurality of conductive terminals 23 are arranged in two rows along the vertical direction, the contact portions 231 of the upper row of conductive terminals 23 are exposed on the upper surface of the abutting portion 211, and the contact portions 231 of the lower row of conductive terminals 23 are exposed on the lower surface of the abutting portion 211. The bending parts 233 of the plurality of conductive terminals 23 are located between the insulating body 21 and the raised seat 22. The raised portions 232 of the plurality of conductive terminals 23 are arranged in two rows in the front-rear direction and are fixed to the raised seats 22, and the raised portions 232 are assembled in the raised grooves 14 together with the raised seats 22. The soldering portions 234 of the plurality of conductive terminals 23 extend downward from the raised base 22 and the plastic frame 1 for soldering with the circuit board.

As shown in fig. 1, 2, 5, 9, 10, 11 and 12, the terminal assembly 2 is further provided with a shielding plate 24, the shielding plate 24 is disposed between two rows of the conductive terminals 23, and the shielding plate 24 has a first shielding portion 241 and a second shielding portion 242 spaced from each other, and the first shielding portion 241 is fixed in the insulating body 21 and is located between the contact portions 231 of the upper and lower rows of the conductive terminals 23 to shield signal interference between the contact portions 231 of the two rows of the conductive terminals 23. The left and right sides of the first shielding portion 241 further extend with an elastic contact portion 2411, and the two elastic contact portions 2411 protrude from the base 212 and extend from the two through slots 1331 to the outside of the assembly slot 13, respectively, so as to contact with the metal shell 3. The plate surface of the second shielding portion 242 is perpendicular to the plate surface of the first shielding portion 241, and the second shielding portion 242 is fixed in the raised seat 22. The second shielding portion 242 is located between the raised portions 232 of the front and rear rows of the conductive terminals 23, and is used for shielding signal interference between the raised portions 232 of the two rows of the conductive terminals 23.

As shown in fig. 1, 8 and 9, a metal shell 3 is mounted in the accommodating space 11 from front to back, and the left and right side walls of the accommodating space 11 block the left and right sides of the metal shell 3, so as to prevent the metal shell 3 from being displaced in the left and right directions. The blocking portion 125 of the connecting wall 12 is used to block the rear end of the metal shell 3, so as to prevent the metal shell 3 from being displaced backward. The lower wall of the accommodating space 11 is used for stopping the downward displacement of the metal shell 3, and the limiting wall 111 is located above the accommodating space 11 and is used for stopping the upward movement of the metal shell 3.

As shown in fig. 1, 2, 5, 8, 9 and 10, the metal shell 3 has a cavity 31 penetrating along the front-rear direction, and the docking portion 211 extends into the cavity 31 to dock with the docking connector. The top wall of the cavity 31 of the metal shell 3 integrally extends to form two first spring arms 32 protruding downward (of course, in other embodiments, the number of the first spring arms 32 may be one or more), and the first spring arms 32 are located below the hollow groove 112 and may elastically deform toward the hollow groove 112. The metal shell 3 further has an extension wall 33, where the extension wall 33 is located at one side of the cavity 31, specifically, the extension wall 33 is formed by extending the top wall of the cavity 31 backward (of course, in other embodiments, the extension wall 33 may also be formed by extending the top wall, the left side wall or the right side wall of the cavity 31 backward). The rear end of the extending wall 33 is further provided with a slot 331 in a concave manner, two blocked portions 332 are extended from the left and right side walls of the slot 331 in opposite directions along the left and right direction (of course, in other embodiments, the number of blocked portions 332 may be one, three, etc.), and each blocked portion 332 is configured in a cantilever manner. When the metal shell 3 is mounted in the accommodating space 11, the two blocked portions 332 are spaced apart from each other in the left-right direction and extend toward each other, and the lower surface of each blocked portion 332 is flush with the lower surface of the extending wall 33, in other words, when the metal shell 3 is mounted in the accommodating space 11, the extending wall 33 is punched to form the slot 331 and the two blocked portions 332 located in the slot 331 before the metal shell is mounted in the accommodating space 11, and at this time, the two blocked portions 332 are not bent, so that the surface of the blocked portion 3323 close to the accommodating cavity 31 is flush with the surface of the extending wall 33 close to the accommodating cavity 31. When the metal shell 3 is mounted in the accommodating space 11 from front to back, the extending wall 33 extends back and is correspondingly inserted into the upper channel 1241 of the second channel 124, and the upper and lower wall surfaces of the upper channel 1241 block the extending wall 33 along the up and down direction, so as to avoid the up and down displacement of the metal shell 3. And a portion of the extension wall 33 extends through the upper passage 1241 from front to back above the stop 2121, with the two stopped portions 332 projecting rearwardly out of the upper passage 1241 and being rearward of the connecting wall 12. Both of the blocked portions 332, which are adjacent to each other in the left-right direction, are bent downward and extend into the groove 2122, so that not only the side surface of the blocked portion 332 faces the rear surface of the blocking portion 2121, but also the side surface of the blocked portion 332 and the rear surface of the blocking portion 2121 are in blocking engagement with each other to restrict the rearward displacement of the base 212 and the forward displacement of the metal shell 3, and the blocking walls on the left and right sides of the groove 2122 can also be in blocking engagement with the blocked portion 332 in the left-right direction to thereby prevent the displacement of the metal shell 3 and the base 212 in the left-right direction, and at the same time, the blocking wall on the rear side of the groove 2122 can also be in blocking engagement with the blocked portion 332 to thereby prevent the rearward displacement of the metal shell 3 and also prevent the forward displacement of the base 212.

As shown in fig. 1, 2, 5, 8, 9 and 11, the metal shell 3 extends backward from the bottom wall of the cavity 31 to form an elongated wall 34, and the width of the elongated wall 33 is greater than the width of the elongated wall 34 in the left-right direction, and the elongated wall 34 is correspondingly inserted into the lower channel 1242. The elongated wall 34 is upwardly and forwardly bent with two elastic pieces 341 (of course, the number of the elastic pieces 341 may be one, three, etc. in other embodiments), in other words, the free end of each elastic piece 341 is located at the front end of the elastic piece 341. The height of each elastic piece 341 in the up-down direction is smaller than the distance between the front end of the inclined surface 12421 and the lower wall surface of the lower channel 1242 in the up-down direction and is larger than the distance between the rear end of the inclined surface 12421 and the lower wall surface of the lower channel 1242, so that when the elongated wall 34 is correspondingly inserted into the lower channel 1242 from front to back, part of the elongated wall 34 passes through the lower channel 1242, the elastic piece 341 extends into and passes through the lower channel 1242 from front to back, and the free end of the elastic piece 341 abuts against the rear end surface 122 of the connecting wall 12, so that the connecting wall 12 can further stop the metal shell 3 from moving forward.

As shown in fig. 1, 2, 5 and 8, two grounding portions 35 are disposed on the left and right sides of the metal shell 3 corresponding to the two side channels 1243, and the two grounding portions 35 extend backward from the left and right side walls of the cavity 31, respectively. Each of the grounding portions 35 extends from front to back into and through the corresponding one of the side passages 1243, so that the side passages 1243 can stop the grounding portion 35 in the up-down and left-right directions, thereby preventing the metal shell 3 from being displaced in the up-down and left-right directions. Each of the grounding portions 35 is in contact with the corresponding elastic contact portion 2411, so that the first shielding portion 241 is grounded to the metal shell 3.

As shown in fig. 1, 2, 5, 8, 9 and 10, the metal shell 3 is provided with a fool-proof slot 36 corresponding to the fool-proof protrusion 113, when the metal shell 3 is assembled in the accommodating space 11, the fool-proof protrusion 113 enters the fool-proof slot 36 and extends into the accommodating cavity 31, specifically, the first step 1131 enters the fool-proof slot 36, and the height of the first step 1131 is lower than the height of the lower wall surface of the metal shell 3 when seen from the front to the back direction, so that the first step 1131 does not extend into the accommodating cavity 31, and the height of the second step 1132 is higher than the height of the lower wall surface of the metal shell 3, so that the second step 1132 enters the fool-proof slot 36 and extends upward into the accommodating cavity 31. The front side of the metal shell 3 is bent towards the inside of the accommodating cavity 31 to form a fool-proof elastic sheet 37, and the fool-proof elastic sheet 37 is positioned right in front of the fool-proof groove 36. The middle of the fool-proof spring piece 37 is disconnected, so that the fool-proof spring piece 37 is formed into two pieces, and when the metal shell 3 is assembled in the accommodating space 11, the projection of the fool-proof protrusion 113 does not exceed the projection of the fool-proof spring piece 37 in the front-back direction, in other words, the height of the second step 1132 extending inwards into the accommodating cavity 31 is lower than the height of the fool-proof spring piece 37 extending into the accommodating cavity 31 in the front-back direction, so that the situation that the second step 1132 extending inwards into the accommodating cavity 31 is too high to impact the butt connector inserted into the accommodating cavity 31 is avoided.

As shown in fig. 1, 4, 9 and 10, the shielding shell 5 is wrapped around the plastic frame 1, a second elastic arm 51 is bent downward on the upper surface of the shielding shell 5 (of course, in other embodiments, the number of the elastic arms may be two or more), the second elastic arm 51 and the first elastic arm 32 are arranged in a staggered manner, and the elastic arm passes through the hollow groove 112 from top to bottom and abuts against the top wall of the cavity 31, so that the metal shell 3 and the shielding shell 5 are grounded and conducted.

As shown in fig. 1 to 12, the method for assembling the electrical connector assembly 100 includes the following steps: as shown in fig. 2, in step 1, the plastic frame 1 is provided, the plastic frame 1 is concavely provided with the accommodating space 11 and the connecting wall 12 located at the rear of the accommodating space 11 from front to back, at the same time, the plastic frame 1 is concavely provided with an assembling groove 13 and a raised groove 14 located below the assembling groove 13 from back to front, the connecting wall 12 is formed with a first channel 123 and a second channel 124 spaced apart from each other, the second channel 124 is formed at the periphery of the first channel 123, the first channel 123 and the second channel 124 penetrate through the connecting wall 12 along the front-rear direction and are communicated with the accommodating space 11, the second channel 124 includes the upper channel 1241 and the lower channel 1242 spaced apart from each other in the up-down direction, the first channel 123 is located between the upper channel 1241 and the lower channel 1242, the width of the upper channel 1241 is greater than the width of the lower channel 124 along the left-right direction, the second channel 124 is further located between the two sides of the upper channel 1243 and the lower channel 1243, the two sides of the upper channel 1243 and the two sides of the lower channel 1243 are further spaced apart from each other, the two sides 1243 are further separated from each other, and the four sides 1243 are spaced apart from each other.

As shown in fig. 1, 2 and 3, in step 2, a plurality of the conductive terminals 23 arranged in two rows in the up-down direction and the shielding sheet 24 provided between the two rows of the conductive terminals 23 are first provided, each of the conductive terminals 23 having the contact portion 231, the elevated portion 232, and the bent portion 233 connecting between the contact portion 231 and the elevated portion 232, and the soldering portion 234 extending downward from the elevated portion 232. The shielding piece 24 has the first shielding portion 241 and the second shielding portion 242 connected to each other in the front-rear direction, the first shielding portion 241 being provided between the contact portions 231 of the two rows of the conductive terminals 23, the second shielding portion 242 being provided between the raised portions 232 of the two rows of the conductive terminals 23; next, the insulating body 21 is injection molded on the first shielding portion 241 and the contact portion 231, the abutting portion 211 and the base portion 212 located behind the abutting portion 211 are formed on the insulating body 21, the blocking portion 2121 is formed on the upper surface of the base portion 212, the groove 2122 is formed on the upper surface of the base portion 212 in a concave manner, and the blocking portion 2121 is formed on the front side wall of the groove 2122. Meanwhile, the raised seat 22 is injection molded on the raised portion 232 and the second shielding portion, the insulating body 21 and the raised seat 22 are spaced apart from each other, the bending portion 233 is located between the insulating body 21 and the raised portion 232 spaced apart from each other, then the shielding sheet 24 is cut so that the first shielding portion 241 and the second shielding portion 242 are spaced apart from each other, finally the bending portion 233 is bent so that the first shielding portion 241 and the second shielding portion 242 are perpendicular to each other, the contact portion 231 and the raised portion 232 are perpendicular to each other, and the insulating body 21 and the raised portion 232 are perpendicular to each other, thereby forming the terminal assembly 2.

As shown in fig. 2 to 3, in step 3, the metal shell 3 is provided, and the metal shell 3 is formed with the accommodating chamber 31 penetrating the metal shell 3 back and forth and the extension wall 33 extending rearward at one side of the accommodating chamber 31. Specifically, the extending wall 33 is formed by extending the top wall of the cavity 31 backward (of course, in other embodiments, the extending wall 33 may be formed by extending the top wall, the left side wall or the right side wall of the cavity 31 backward), the blocked portion 332 is formed by punching the rear side of the extending wall 33, specifically, the rear end of the extending wall 33 is concavely provided with the slot 331 forward by punching, two blocked portions 332 are formed by extending from the left and right side walls of the slot 331 in opposite directions, the two blocked portions 332 are spaced from each other in the left and right directions, and the lower surface of each blocked portion 332 is coplanar with the lower surface of the extending wall 33.

As shown in fig. 3 and 11, in step 4, the terminal assembly 2 is assembled into the plastic frame 1 from the back to the front, such that the abutting portion 211 sequentially passes through the assembling groove 13 and the first channel 123 from the back to the front and extends into the accommodating space 11, the inner wall surface of the first channel 123 blocks the abutting portion 211 in the up-down and left-right directions, and part of the base 212 extends into the assembling groove 13 and is located behind the connecting wall 12, so that the connecting wall 12 can block the base 212 from moving forward, and the inner wall surface of the assembling groove 13 can block the base 212 from moving in the up-down and left-right directions.

As shown in fig. 4, 11 and 12, in step 5, the metal shell 3 is assembled in the accommodating space 11 from front to back, so that the left and right side walls of the accommodating space 11 block the left and right sides of the metal shell 3, the connecting wall 12 blocks the rear end of the metal shell 3 from being displaced backward, the abutting portion 211 extends into the accommodating cavity 31 from back to front, the extending wall 33 passes through the upper channel 1241 of the second channel 124 from front to back, and the blocked portion 332 moves along with the extending wall 33 and then extends to the rear of the blocking portion 2121.

As shown in fig. 4, 5 and 10, in step 6: after step 5, the two blocked portions 332 are bent downward by the jig 6, so that the two blocked portions 332 extend into the grooves 2122, the blocking portions 2121 block the front of the blocked portions 332, and the side surface of each blocked portion 332 faces the rear surface of the blocking portion 2121 to abut against the blocking portion 2121, so as to limit the backward displacement of the insulating body 21 and limit the forward displacement of the metal shell 3.

In summary, the electrical connector assembly 100 and the assembly method of the electrical connector assembly 100 of the present invention have the following advantages:

(1) The tongue portion of the terminal assembly 2 passes through the first channel 123 from back to front, and the inner wall surface of the first channel 123 blocks the tongue portion in the up-down direction and the left-right direction, the metal shell 3 is mounted in the accommodating space 11 from front to back, and the left-right side walls of the accommodating space 11 block the left-right sides of the metal shell 3, so that the holding structures of the metal shell 3 and the terminal assembly 2 and the plastic frame 1 are increased, and the metal shell 3 and the terminal assembly 2 and the plastic frame 1 can be respectively fixed on the plastic frame 1, so that the terminal assembly 2 can be stably abutted with a butt connector; and since the connecting wall 12 is located in front of the base 212 to block the base 212 from being displaced forward, the connecting wall 12 is located behind the receiving space 11 to block the metal shell 3 from being displaced rearward, and the extending wall 33 of the metal shell 3 passes through the second passage 124 rearward, so that the blocked portion 332 on the extending wall 33 cooperates with the blocking portion 2121 of the base 212 to form an interlock to limit the rearward displacement of the insulating body 21 and to limit the forward displacement of the metal shell 3, so that the interlocking of the blocking portion 2121 and the blocked portion 332 not only can limit the terminal assembly 2 and the metal shell 3 to each other, but also can further fix the metal shell 3 and the terminal assembly 2 to the plastic frame 1, thereby avoiding the situation that the metal shell 3 and the terminal assembly 2 are separated from the plastic frame 1 in the forward and backward direction by the action of a pulling-out plug force; the blocked portion 332 is bent after the metal shell 3 is mounted into the accommodating space 11 from front to back, so that the blocked portion 332 will not scratch or wear to the blocked portion 2121, and the blocked portion 332 will not be pressed by the inner wall of the second channel 124 during mounting to cause fatigue and cannot abut against the blocked portion 2121, thereby ensuring that the blocked portion 2121 stably blocks the blocked portion 332 and prevents the metal shell 3 and the terminal assembly 2 from being displaced back and forth, so that the electrical connector assembly 100 can be stably abutted against a mating connector.

(2) The width of the upper channel 1241 is greater than the width of the lower channel 1242 along the left-right direction, the upper channel 1241 and the lower channel 1242 are respectively communicated with the accommodating space 11 along the front-back direction, the extending wall 33 is formed by extending backwards from the top wall of the accommodating cavity 31, the extending wall 34 is formed by extending backwards from the bottom wall of the accommodating cavity 31 of the metal shell 3, the width of the extending wall 33 is greater than the width of the extending wall 34 along the left-right direction, the extending wall 33 enters the upper channel 1241, and the extending wall 34 enters the lower channel 1242; in this way, the metal shell 3 can be accurately assembled in the accommodating space 11, the inner wall surface of the upper passage 1241 can block the extension wall 33 in the up-down direction and the left-right direction, and the inner wall surface of the lower passage 1242 can block the extension wall 34 in the up-down direction and the left-right direction, and further, the metal shell 3 can be limited in the up-down direction and the left-right direction.

(3) Each blocked portion 332 extends in the left-right direction and is configured as a cantilever, in the left-right direction, two blocked portions 332 are spaced apart from each other and are close to each other, and two blocked portions 332 are bent towards the groove 2122, so that a side surface of the blocked portion 332 abuts against a rear surface of the blocking portion 2121, and an abutting area between the blocked portion 332 and the blocking portion 2121 is increased, so that the abutting of the blocked portions is more stable.

(4) The height of the lower inner wall surface of the upper passage 1241 is equal to the height of the stopper 2121 or higher than the stopper 2121 in the up-down direction, so that when the extension wall 33 is inserted into the upper passage 1241 from front to rear, the rear surface of the extension wall 33 is prevented from colliding with the front surface of the stopper 2121, resulting in damage to the extension wall 33 or the stopper 2121.

(5) The upper wall surface of the lower passage 1242 is inclined and extends from front to back and downward with the inclined surface 12421, the distance from the front end of the inclined surface 12421 to the lower wall surface of the lower passage 1242 is greater than the height of the elastic sheet 341, and the distance from the rear end of the inclined surface 12421 to the lower wall surface of the lower passage 1242 is smaller than the height of the elastic sheet 341, when the elongated wall 34 passes through the lower passage 1242 from front to back, the elastic sheet 341 passes through the lower passage 1242 from front to back, and the free end of the elastic sheet 341 abuts against the rear end surface 122 of the connecting wall 12, so that the elongated wall 34 with the elastic sheet 341 bent therein can be smoothly inserted into the lower passage 1242, and when the elastic sheet 341 passes through the lower passage 1242, the lower passage 2 can stop the elastic sheet 341 from moving forward, thereby restricting the elastic sheet from moving forward in the housing space 11.

(6) The elastic contact portion 2411 protrudes outside the base 212, two grounding portions 35 are disposed on the left and right sides of the metal shell 3 corresponding to the two side channels 1243, and the grounding portions 35 extend into the side channels 1243 from front to back and contact with the elastic contact portion 2411, so that the shielding sheet 24 is grounded and conducted with the metal shell 3, the shielding effect of the shielding sheet 24 is enhanced, and the inner wall surface of the side channels 1243 can also stop the grounding portions 35 in the up-down direction and the left-right direction, so that the displacement of the metal shell 3 in the up-down direction and the left-right direction can be further limited.

(7) The plastic frame 1 is provided with a fool-proof bump 113 in the accommodating space 11 and is connected with the connecting wall 12, the metal shell 3 is provided with a fool-proof slot 36 corresponding to the fool-proof bump 113, the front side of the metal shell 3 is bent inwards and extends into the accommodating cavity 31 to form the fool-proof elastic sheet 37, when the metal shell 3 is assembled in the accommodating space 11, the fool-proof bump 113 enters the fool-proof slot 36 and extends into the accommodating cavity 31, so that the fool-proof bump 113 and the fool-proof slot 36 cooperate to prevent the metal shell 3 from being reversely inserted into the accommodating space 11, and the fool-proof elastic sheet 37 can also prevent the butt connector from being reversely inserted into the accommodating cavity 31, however, as the projection of the fool-proof bump 113 is not upwards beyond the projection of the fool-proof elastic sheet 37 when seen in the front-back direction, the fool-proof bump 113 cannot collide or be blocked into the accommodating cavity 31, and the situation that the butt connector 23 cannot be stably connected with the butt connector 23.

(8) The interference portion 2124 is protruding upward from the bottom wall of each of the relief grooves 2123, two limiting walls 131 spaced apart from each other in the left-right direction and the limiting grooves 132 located between the two limiting walls 131 are provided above the assembly groove 13, the two limiting walls 131 correspond to the two relief grooves 2123, when the terminal assembly 2 is mounted on the plastic frame 1, the stop portion 2121 protrudes into the limiting grooves 132, each limiting wall 131 is located in the corresponding relief groove 2123 and stops the stop portion 2121 in the left-right direction, and the interference portion 2124 and the limiting wall 131 interfere with each other to fix the base 212 in the assembly groove 13, so that the insulator 21 can be assembled forward from behind to the plastic frame 1, the limiting grooves 132 can limit the base 212 in the left-right direction, the limiting walls 131 and the interference portion 2124 can also be interference-fitted in the left-right direction, and the base 212 can be limited in the forward-right direction.

(9) Providing the metal shell 3 in step 3, and forming the extended wall 33 of the metal with the blocked portion 332, and the lower surface of the blocked portion 332 being coplanar with the lower surface of the extended wall 33; in step 4, the terminal assembly 2 with the stop portion 2121 is first inserted into the plastic frame 1 from the back to the front, and in step 5, the metal shell 3 is then assembled into the accommodating space 11 from the front to the back, the extension wall 33 is inserted into the second channel 124 from the front to the back, and the blocked portion 332 moves along with the extension wall 33 and then extends to the rear of the stop portion 2121; in step 6, the blocked portion 332 is bent towards the blocking portion 2121 by the jig 6, so that the blocking portion 2121 is blocked in front of the blocked portion 332, and the backward displacement of the insulating body 21 and the forward displacement of the metal shell 3 are limited; therefore, the blocked portion 332 is not bent when being inserted into the second channel 124, so that the blocked portion 332 is prevented from being scratched to the plastic frame 1 and the insulating body 21 in the process of passing through the second channel 124, and the blocked portion 332 is prevented from being supported and supported to generate fatigue, so that the blocked portion 2121 cannot be stably supported and supported.

The above detailed description is merely illustrative of the preferred embodiments of the invention and is not intended to limit the scope of the invention, so that all equivalent technical changes that can be made by the present specification and illustrations are included in the scope of the invention.

Claims

1. An electrical connector assembly, comprising:

the plastic frame is characterized in that the front surface of the plastic frame is concavely provided with an accommodating space and a connecting wall positioned at the rear side of the accommodating space, the connecting wall is provided with a first channel and a second channel which are mutually spaced, the second channel is positioned at the periphery of the first channel, and the first channel and the second channel respectively penetrate through the connecting wall along the front-rear direction and are communicated with the accommodating space;

the terminal assembly is provided with an insulating body and a plurality of conductive terminals which are fixedly held on the insulating body, the insulating body is provided with a butt joint part and a base part which is positioned behind the butt joint part, the base part is assembled on the rear side of the plastic frame, the butt joint part passes through the first channel from back to front and enters the accommodating space, the butt joint part is blocked by the inner wall surfaces around the first channel in the up-down direction and the left-right direction, the front side of the base part is blocked by the rear side of the connecting wall to prevent the base part from moving forwards, and the base part is provided with at least one blocking part;

The metal shell is installed in the accommodating space from front to back, the left side wall and the right side wall of the accommodating space block the left side and the right side of the metal shell, the connecting wall is used for blocking the rear end of the metal shell from moving backwards, the metal shell is provided with a containing cavity penetrating through the containing cavity in the front-back direction and an extending wall located on one side of the containing cavity, the extending wall is provided with at least one blocked part, the abutting part stretches into the containing cavity, the extending wall extends backwards into the second channel, the blocked part protrudes backwards out of the second channel, the upper wall surface and the lower wall surface of the second channel block the extending wall in the up-down direction, and the blocked part is located behind the connecting wall and is matched with the blocking part in a blocking mode so as to limit the base to move backwards and limit the metal shell to move forwards.

2. The electrical connector assembly of claim 1, wherein: the second channel is provided with an upper channel and a lower channel which are mutually spaced along the up-down direction, the width of the upper channel is larger than that of the lower channel along the left-right direction, the first channel is arranged between the upper channel and the lower channel along the up-down direction, the upper channel and the lower channel are respectively communicated with the accommodating space in the front-back direction, the extending wall is formed by extending backwards from the top wall of the accommodating cavity, the metal shell is provided with an extending wall in a backwards extending way from the bottom wall of the accommodating cavity, the width of the extending wall is larger than that of the extending wall along the left-right direction, and the extending wall is correspondingly inserted into the upper channel and the extending wall is correspondingly inserted into the lower channel.

3. The electrical connector assembly of claim 2, wherein: the upper surface of the base is provided with a groove in a downward concave mode, the blocking part is arranged on the upper surface of the base and located in front of the groove, when the extending wall passes through the upper channel backwards, the extending wall is located above the blocking part, the blocked part bends downwards and stretches into the groove, and the blocking part is located in front of the blocked part and used for blocking the metal shell to move forwards.

4. An electrical connector assembly as in claim 3 wherein: the number of the blocked parts is two, each blocked part extends along the left-right direction and is arranged in a cantilever manner, the two blocked parts are mutually spaced in the left-right direction, the free ends of the two blocked parts are mutually close, and the two blocked parts are bent towards the groove, so that the side surfaces of the blocked parts are opposite to the rear surface of the blocked parts and are propped against the blocked parts.

5. The electrical connector assembly of claim 2, wherein: the height of the lower inner wall surface of the upper channel is equal to or higher than the stop part in the vertical direction.

6. The electrical connector assembly of claim 2, wherein: the extension wall is provided with at least one elastic piece which is bent upwards and forwards, the front end of the upper wall surface of the lower channel is extended backwards and downwards in a tilting way, the distance from the front end of the tilting surface to the lower wall surface of the lower channel is larger than the height of the elastic piece along the up-down direction, the distance from the rear end of the tilting surface to the lower wall surface of the lower channel is smaller than the height of the elastic piece, when the extension wall passes through the lower channel from front to rear, the elastic piece protrudes backwards out of the lower channel, and the free end of the elastic piece abuts against the rear end surface of the connecting wall.

7. The electrical connector assembly of claim 1, wherein: the second channel is provided with two side channels which are mutually spaced along the left-right direction, the two side channels are respectively positioned at the left side and the right side of the first channel and are communicated with the accommodating space forwards, the terminal assembly is provided with a shielding sheet, a plurality of conductive terminals are arranged in an upper row and a lower row and are respectively exposed on the upper surface and the lower surface of the butt joint part, the shielding sheet is arranged between the two rows of conductive terminals, the left side and the right side of the shielding sheet are respectively provided with an elastic butt joint part in a protruding mode, the elastic butt joint parts protrude out of the base part, the left side and the right side of the metal shell are respectively provided with two grounding parts corresponding to the two side channels, and the grounding parts extend into the side channels from front to back and are in butt joint with the elastic butt joint parts.

8. The electrical connector assembly of claim 1, wherein: the top of the left side wall and the right side wall of the accommodating space are respectively and oppositely extended with a limit wall, a hollow groove is concavely arranged between the two limit walls of the plastic frame, the front surface of the limit wall is flush with the front surface of the plastic frame, the limit wall stops the metal shell from upwards displacing, the hollow groove is communicated with the accommodating space in the upper-lower direction, the top wall of the accommodating cavity is integrally extended with at least one first elastic arm protruding downwards, the first elastic arm can elastically deform towards the hollow groove, a shielding shell is coated outside the plastic frame, at least one second elastic arm is downwards bent and arranged in a staggered mode with the first elastic arm, and the second elastic arm penetrates through the hollow groove and is propped against the top wall of the accommodating cavity.

9. The electrical connector assembly of claim 1, wherein: the plastic frame is provided with a fool-proof lug in the accommodating space and is connected with the connecting wall, the fool-proof lug is arranged on the lower side of the first channel, the metal shell is provided with a fool-proof groove corresponding to the fool-proof lug, the front side of the metal shell faces the accommodating cavity and is bent to form a fool-proof elastic sheet, the fool-proof elastic sheet is positioned right in front of the fool-proof groove, and when the metal shell is assembled in the accommodating space, the fool-proof lug enters the fool-proof groove and stretches into the accommodating cavity, and the projection of the fool-proof lug is not upwards beyond the projection of the fool-proof part along the front-back direction.

10. The electrical connector assembly of claim 1, wherein: the plastic frame is concavely provided with an assembly groove from the back to the front, the assembly groove is positioned at the rear of the connecting wall, the second channel is surrounded outside the assembly groove when seen from the back to the front, the assembly groove is communicated with the accommodating space through the first channel in the front and the back, the butt joint part sequentially passes through the assembly groove and the first channel from the back to the front, at least part of the base part is accommodated in the assembly groove, and the inner wall surface of the assembly groove stops the base part in the up-down direction and the left-right direction.

11. The electrical connector assembly of claim 10, wherein: the upper surface of basal portion is equipped with two grooves of stepping down to the indent, two the groove of stepping down is located the left and right sides of stopping portion and all be the open forward, every the diapire of stepping down the groove is protruding upward to be equipped with an interference portion, the top of equipment groove is equipped with along two restriction walls of mutual interval in the left and right directions and is located two a spacing groove between the restriction wall, two the restriction wall corresponds with two the groove of stepping down, works as when the terminal subassembly is installed in the plastic frame, stopping portion stretches into in the spacing groove, every the restriction wall is located corresponding step down the inslot and stop in left and right directions stopping portion, interference portion with the restriction wall mutual interference makes the basal portion is fixed in the equipment inslot.

12. The electrical connector assembly of claim 10, wherein: the plastic frame is concavely provided with a heightening groove from back to front, the heightening groove is positioned below the assembling groove and is communicated with the assembling groove, the terminal assembly is provided with a heightening seat, each conductive terminal is provided with a contact part, a heightening part and a bending part connected between the contact part and the heightening part, the lower end of the heightening part is also connected with a welding part, the contact part is fixedly arranged on the butt joint part and is inserted into the accommodating space from back to front, the heightening part is fixedly arranged on the heightening seat and is assembled in the heightening groove, an electric connecting seat is accommodated in the accommodating groove, and the electric connecting seat is provided with a plurality of conductive contacts, each conductive contact is provided with a welding pin, and the welding part and the welding pin downwards extend beyond the lower surface of the plastic frame so as to be welded with a circuit board.

13. A method of assembling an electrical connector assembly, comprising the steps of:

step 1: providing a plastic frame, wherein the plastic frame is concavely arranged from front to back to form an accommodating space and a connecting wall positioned behind the accommodating space, the connecting wall is formed with a first channel and a second channel which are mutually spaced, the second channel is formed at the periphery of the first channel, and the first channel and the second channel respectively penetrate through the connecting wall along the front and back direction and are communicated with the accommodating space;

Step 2: providing a terminal assembly, wherein the terminal assembly comprises an insulating body and a plurality of conductive terminals fixed on the insulating body, the insulating body is provided with a butt joint part and a base part positioned behind the butt joint part, and at least one stop part is formed on the upper surface of the base part;

step 3: providing a metal shell, wherein the metal shell is provided with a containing cavity penetrating front and back, one side of the containing cavity extends backwards to form an extending wall, and the rear side of the extending wall is stamped to form at least one blocked part;

step 4: assembling the terminal assembly on the plastic frame from back to front, enabling the abutting part to penetrate through the first channel from back to front and extend into the accommodating space, enabling the surrounding inner wall surfaces of the first channel to stop the abutting part in the up-down direction and the left-right direction, and enabling the connecting wall to be located in front of the base part to stop the base part from moving forwards;

step 5: assembling the metal shell in the accommodating space from front to back, so that the left side wall and the right side wall of the accommodating space block the left side and the right side of the metal shell, the connecting wall blocks the rear end of the metal shell from back to displace, the abutting part extends into the accommodating cavity from back to front, the extending wall passes through the second channel from front to back, and the blocked part moves along with the extending wall and then extends to the rear of the blocking part;

Step 6: after the step 5, the blocked part is bent towards the blocking part by a jig, so that the blocking part is blocked in front of the blocked part, and the backward displacement of the insulating body and the forward displacement of the metal shell are limited.

14. The method of assembling an electrical connector assembly of claim 13, wherein: in step 1, the second channel includes an upper channel and a lower channel spaced apart from each other in an up-down direction, the first channel is located between the upper channel and the lower channel in the up-down direction, and a width of the upper channel is larger than a width of the lower channel in a left-right direction, the second channel further includes two side channels spaced apart from each other in the left-right direction, the first channel is located between the two side channels in the left-right direction, and any two of the two side channels, the upper channel, and the lower channel are spaced apart from each other.

15. The method of assembling an electrical connector assembly of claim 13, wherein: in step 2, a groove is concavely formed on the upper surface of the base, the blocking portion is located at the front side of the groove, in step 3, a slot is concavely formed at the rear end of the extension wall, two blocked portions are formed by extending from left and right side walls of the slot in opposite directions, the two blocked portions are spaced apart from each other in the left and right directions, and free ends of the two blocked portions are close to each other.

16. The method of assembling an electrical connector assembly of claim 15, wherein: in step 6, the two blocked portions are bent downward by the jig, so that the two blocked portions extend into the grooves, and the side surface of each blocked portion faces the rear surface of the blocking portion to be abutted against the blocking portion.

17. The method of assembling an electrical connector assembly of claim 13, wherein: in step 2, a plurality of conductive terminals arranged in two rows along an up-down direction and a shielding sheet arranged between the two rows of conductive terminals are provided, each conductive terminal is provided with a contact part, a heightened part and a bending part connected between the contact part and the heightened part, the shielding sheet is provided with a first shielding part and a second shielding part which are mutually connected along a front-back direction, the first shielding part is arranged between the contact parts of the two rows of conductive terminals, and the second shielding part is arranged between the heightened parts of the two rows of conductive terminals; secondly, injection molding is carried out on the first shielding part and the contact part, injection molding is carried out on the heightening part and the second shielding part, a heightening seat is formed, the insulating body and the heightening seat are mutually spaced, the bending part is positioned between the insulating body and the heightening part which are mutually spaced, then the shielding sheet is cut, so that the first shielding part and the second shielding part are mutually spaced, finally the bending part is bent, the first shielding part and the second shielding part are mutually perpendicular, and the insulating body and the heightening part are mutually perpendicular, so that the terminal assembly is formed.