CN217306788U - Electric connector and connector assembly - Google Patents

Abstract

The utility model discloses a connector component, which comprises an electric connector and a butt connector which are mutually inserted, wherein the electric connector comprises an insulating base body, a signal contact and a shielding part, the signal contact is arranged on the insulating base body, the signal contact is provided with a flat-plate-shaped guide part, and the shielding part is provided with elastic arms which are correspondingly arranged on the left and the right of the guide part; the butting connector comprises an insulating body and a signal terminal arranged on the insulating body, the signal terminal is provided with a flat contact part, the contact part is inserted between the guide connection part and the elastic arm along the front-back direction and is in contact with the guide connection part in the left-right direction, so that the contact part and the guide connection part form flat-plate-to-flat-plate surface contact, the antenna effect is reduced, and high-frequency signal transmission is facilitated; one of the butting connector and the electric connector is provided with an insulating piece, at least part of the insulating piece is positioned between the elastic arm and the guide connection part in the left-right direction, and the elastic arm drives the insulating piece to apply force towards the contact part in the left-right direction, so that the contact part and the guide connection part are stably contacted in the left-right direction to form stable electric connection.

Description

Electric connector and connector assembly

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electrical connector and a connector assembly having the same, and more particularly to a connector assembly having an electrical connector and a docking connector which are firmly contacted with each other and capable of transmitting high frequency signals.

[ background ] A method for producing a semiconductor device

The existing connector assembly comprises a backplane connector and a daughter board connector which are matched and connected with each other, wherein the backplane connector comprises a shell and a plurality of terminal modules arranged on the shell, the shell is provided with a plurality of contact ports which are concavely arranged from the front surface of the shell to the rear, each terminal module comprises a fixed frame and a row of conductive terminals arranged on the fixed frame, two adjacent terminal modules are arranged into a group, two rows of conductive terminals in the group are arranged on two opposite sides of the contact ports, each row of conductive terminals comprises a signal terminal and a grounding terminal, the signal terminal and the grounding terminal both comprise contact parts exposed out of the contact ports, each contact part comprises a front contact part which is bent and extended towards the contact ports and has elasticity and a flat-plate-shaped rear contact part positioned behind the front contact part, the daughter board connector comprises a socket and a plurality of plug-in modules arranged on the socket, the socket is provided with a base and a plurality of clappers which are formed by protruding backwards from the base, two rows of conductive elements are arranged on two opposite sides of the tongue plate, each conductive element comprises a signal element and a grounding element, each signal element and each grounding element comprises a guide part in electrical contact with the corresponding contact part, each guide part comprises a rear guide part which extends away from the tongue plate in a bending mode and has elasticity and a flat front guide part which is located in front of the rear guide part, the tongue plate is inserted into the contact hole, the front contact part is in elastic contact with the front guide part, and the rear contact part is in elastic contact with the rear guide part.

Since the contact portion includes the ineffective tip located at the front end of the front contact portion but not in contact with the front contact portion, and the connection portion includes the useless tip located at the rear end of the rear connection portion but not in contact with the rear contact portion, the current passes through the contact portion and the connection portion, and the power accumulated at the ineffective tip and the useless tip generates an antenna effect (open stub), thereby causing interference to signal transmission between the signal terminal and the signal element, which is disadvantageous to the connector assembly for transmitting a high frequency signal.

Therefore, there is a need for a new electrical connector and a connector assembly having the same to overcome the above-mentioned problems.

[ Utility model ] A method for manufacturing a semiconductor device

An object of the utility model is to provide a reduce open stub, transmissible high frequency signal, realize the connector assembly of electric connector and the firm contact of butting connector simultaneously.

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

a connector assembly comprises an electric connector and a butting connector which are mutually spliced, wherein the electric connector comprises an insulating base body, at least one terminal module and at least one shielding piece, the terminal module is arranged on the insulating base body and comprises at least one signal contact, the signal contact is provided with a first flat-plate-shaped guide connecting part, the shielding piece is provided with at least one elastic arm, and the elastic arm is arranged corresponding to the first guide connecting part in the left-right direction; the butting connector comprises an insulating body and at least one terminal module arranged on the insulating body, the terminal module comprises at least one signal terminal, the signal terminal is provided with a flat first contact part, and the first contact part is inserted between the first guide part and the elastic arm along the front-back direction and is contacted with the first guide part in the left-right direction so as to form electrical connection; one of the butting connector and the electric connector is provided with at least one insulating piece, at least one part of the insulating piece is positioned between the elastic arm and the first guide connecting part in the left-right direction, and the elastic arm drives the insulating piece to apply a force towards the first contact part in the left-right direction, so that the first contact part and the first guide connecting part are stably contacted in the left-right direction to form stable electric connection.

Further, the first contact portion is provided with a contact surface facing the first guide portion in the left-right direction, and a central surface is defined, the central surface divides the contact surface into a front part and a rear part in the front-rear direction with the center of the contact surface, the insulating member is provided with two convex portions protruding towards the first guide portion, and the two convex portions are located on the front side and the rear side of the central surface.

The terminal module further comprises a plurality of ground terminals, at least one signal terminal is arranged between every two adjacent ground terminals, the ground terminals are provided with a second bent contact portion, the terminal module further comprises a plurality of ground contacts, at least one signal contact is arranged between every two adjacent ground contacts, the butting connector is defined to be inserted into the electric connector forwards, and the second contact portion is located in front of the first contact portion and is in elastic contact with the ground contacts.

Further, the ground terminal is provided with a third flat contact portion located behind the second contact portion, the ground contact is provided with a second curved guide portion and a third flat guide portion located in front of the second guide portion, the second contact portion is in elastic contact with the third guide portion, and the third contact portion is in elastic contact with the second guide portion, so that the ground terminal and the ground contact form two-position contact.

Further, a position where the first contact portion contacts the first lead portion is between two contact positions of the ground terminal and the ground contact in the left-right direction as viewed in the up-down direction.

Furthermore, the terminal module further comprises a plurality of ground contacts, two adjacent signal contacts are arranged between every two adjacent ground contacts and used for transmitting differential signals, the ground contacts are provided with a bent second conductive part, the terminal module further comprises a plurality of ground terminals, two adjacent signal terminals are arranged between every two adjacent ground terminals and used for transmitting differential signals, the butt-joint connector is defined to be inserted into the electric connector forwards, and the second conductive part is located behind the first conductive part and in elastic contact with the ground terminals.

Further, the insulating member is fixed to the elastic arm.

Further, the insulating part is embedded and formed on the elastic arm, the insulating part is provided with at least one concave hole for positioning an ejector pin of a die in embedding and forming of the elastic arm.

Further, the insulating part is integrally formed on the insulating body, and the insulating part is of a cantilever structure formed by extending forwards from the insulating body.

Furthermore, a shielding part is arranged at the position of the insulating body corresponding to the insulating part in the left-right direction, an accommodating space is formed between the shielding part and the insulating part, and the elastic arm protrudes into the accommodating space.

Further, the insulating body comprises at least one slot, two rows of the signal terminals are arranged on the left side and the right side of the slot of the butting connector, the insulating base body comprises a base part and at least one tongue plate part formed by the base part protruding backwards, the electric connector is correspondingly provided with two rows of signal contacts and two rows of elastic arms at the left side and the right side of the tongue plate part, the row of the elastic arms on the same side of the tongue plate part is far away from the tongue plate part in the left-right direction relative to the row of the signal contacts, the resilient arm extends rearwardly beyond the rear surface of the base but not beyond the rear surface of the tongue portion, the elastic arm and the tongue plate part are arranged at intervals in the left and right directions, the tongue plate part is inserted into the slot backwards, so that the two rows of signal contacts on the left side and the right side of the tongue plate part are correspondingly connected with the two rows of signal terminals on the left side and the right side of the slot in a guiding manner.

Furthermore, the insulation body comprises two rows of grooves arranged on the left side and the right side of the slot, the grooves are formed by being formed by the fact that the front surface of the insulation body is recessed backwards, the tongue plate portion is inserted into the slot backwards, and the elastic arm carries the insulation piece to be inserted into the grooves.

Further, the electric connector includes a plurality of terminal module, a plurality of shielding piece and an at least middle shielding piece, a plurality of the terminal module sets up side by side in the left and right sides direction, each the terminal module includes a grounding piece, each the terminal module disposes one the shielding piece, the shielding piece with the grounding piece is located to correspond in the terminal module the left and right sides of signal contact, adjacent two dispose one between the terminal module middle shielding piece constitutes a module unit jointly, middle shielding piece is located two between the grounding piece, and respectively with two the grounding piece contact, two the shielding piece is located and is corresponded the relative two outsides of module unit.

Further, the terminal module still includes a ground lug and certainly a plurality of ground contact that the integrative bending type of ground lug extended formation, it is a plurality of ground contact is in interval arrangement in the up-and-down direction, the shielding piece with the ground lug is located correspond on the terminal module the left and right sides of signal contact, the signal contact is equipped with a plurality ofly, and is a plurality of at least part of signal contact sets up in pairs, and every pair is used for transmitting differential signal, and the setting in pairs each distributes on the relative both sides of signal contact has one ground contact, shielding piece with one of the ground lug both is protruding to be equipped with at least a convex closure and contacts with another person and forms electric connection, the convex closure is located adjacent two pairs between the signal contact.

Furthermore, a shielding plate is arranged on one side of the terminal module in the left-right direction, the terminal module further comprises a grounding plate and a plurality of grounding terminals formed by bending and extending the grounding plate integrally, the grounding terminals are arranged at intervals in the up-down direction, the grounding plate and the shielding plate are arranged on the left side and the right side of the signal terminals, the signal terminals are arranged in plurality, at least part of the signal terminals are arranged in pairs, each pair of the signal terminals is used for transmitting differential signals, one grounding terminal is distributed on each of the two opposite sides of the signal terminals arranged in pairs, at least one protruding bag is convexly arranged on one of the shielding plate and the grounding plate and contacts with the other one of the shielding plate and the grounding plate to form electrical connection, and the protruding bag is arranged between the two adjacent pairs of the signal terminals.

An electrical connector for mating with a mating connector in a front-to-back direction, the mating connector including at least one signal terminal, the signal terminal including a first contact portion in a flat plate shape, the electrical connector comprising: an insulating base; the terminal module comprises at least one signal contact, and the signal contact is provided with a first flat-plate-shaped guide connection part; the shielding piece is provided with at least one elastic arm, and the elastic arm is arranged corresponding to the first guide part in the left-right direction; the insulating piece is arranged on the elastic arm, and at least part of the insulating piece is positioned between the elastic arm and the first guide connecting part in the left-right direction; when the first contact part is inserted between the first guide part and the elastic arm along the front-back direction, the elastic arm drives the insulating part to apply a force towards the first contact part in the left-right direction, so that the first contact part and the first guide part are stably contacted in the left-right direction to form stable electrical connection.

Further, the insulating member is provided with a plurality of protrusions which are formed by protruding towards the first conductive connection part and are in contact with the first contact part.

Furthermore, the terminal module further includes a plurality of ground contacts for being correspondingly connected with a plurality of ground terminals of the mating connector in a conductive manner, so as to define that the mating connector is inserted into the electrical connector forward, the ground contacts are provided with a bent second conductive connection portion, the second conductive connection portion is located behind the first conductive connection portion, and the second conductive connection portion is used for being in elastic contact with the ground terminals.

The grounding contact is further provided with a third flat-plate-shaped guide connecting part positioned in front of the second guide connecting part, the second guide connecting part and the third guide connecting part are used for guiding the same grounding terminal, and the first guide connecting part is arranged between the second guide connecting part and the third guide connecting part in the left-right direction.

Further, the insulating piece is embedded and formed in the elastic arm.

Further, the insulating base body comprises a base portion and at least one tongue plate portion formed by protruding backwards from the base portion, two rows of signal contacts and two rows of elastic arms are correspondingly arranged on the left side and the right side of the tongue plate portion of the electric connector, one row of elastic arms on the same side of the tongue plate portion is far away from the tongue plate portion in the left-right direction relative to one row of signal contacts, the elastic arms extend backwards to exceed the rear surface of the base portion but do not exceed the rear surface of the tongue plate portion, and the elastic arms and the corresponding insulating pieces are arranged at intervals with the tongue plate portion in the left-right direction.

Compared with the prior art, the utility model discloses an electric connector and connector assembly have following beneficial effect:

the utility model discloses a with the first contact site of signal terminal establish flat, the first guide connection portion of signal contact establishes flat, the shield extends the bullet arm that forms and corresponds the setting with first guide connection portion in the left and right directions, the insulating part is located at least partly in the left and right directions between the bullet arm and the first guide connection portion, first contact site along the fore-and-aft direction insert between first guide connection portion and the bullet arm, make first contact site and first guide connection portion form the face contact of flat to flat in the left and right directions, reduce antenna effect, be favorable to the transmission of high frequency signal; meanwhile, the elastic arm drives the insulating piece to apply a force to the first guide connecting part towards the first contact part in the left-right direction, so that a positive force between the first contact part and the first guide connecting part is increased, the first contact part and the first guide connecting part are in stable contact in the left-right direction, stable electric connection is formed, and the situation that the connector assembly is broken due to the fact that the first contact part and the first guide connecting part are separated from each other under the action of external force or in a vibration environment is avoided.

[ description of the drawings ]

Fig. 1 is a perspective view of a first embodiment of a connector assembly according to the present invention, connected to a circuit board and a substrate;

fig. 2 is a perspective view of the electrical connector of fig. 1 prior to mating with a mating connector;

fig. 3 is a partially exploded view of the electrical connector of fig. 2;

fig. 4 is a perspective view of one module unit of fig. 3 with two corresponding shields, an intermediate shield, and a plurality of dielectric members;

FIG. 5 is a rear-to-front view of the hidden insulating block of FIG. 4;

fig. 6 is an exploded perspective view of a terminal module and a corresponding shield and insulators of the hidden insulator block of fig. 3;

FIG. 7 is a bottom view of the assembled components of FIG. 6;

FIG. 8 is a cross-sectional view taken along A-A of FIG. 7;

FIG. 9 is a cross-sectional view of the electrical connector of FIG. 2;

fig. 10 is a partially exploded view of the docking connector of fig. 2;

fig. 11 is an exploded perspective view of one module unit and two corresponding shielding plates of fig. 10;

fig. 12 is an exploded perspective view of one of the terminal modules and a corresponding one of the shield plates of fig. 11;

fig. 13 is a top view of one terminal module and a corresponding one shielding plate of fig. 10 after the plastic block is hidden;

FIG. 14 is a cross-sectional view taken along line B-B of FIG. 13;

FIG. 15 is a cross-sectional view of the docking connector of FIG. 2;

fig. 16 is a schematic view of the electrical connector of fig. 9 mated with the mating connector of fig. 15;

FIG. 17 is an enlarged partial view of FIG. 16 at position C;

FIG. 18 is a partial schematic view of the docking station of FIGS. 7 and 13;

fig. 19 is a perspective view of a second embodiment of the connector assembly of the present invention, connected to a circuit board and a substrate;

fig. 20 is a cross-sectional view of the electrical connector of fig. 19;

fig. 21 is a cross-sectional view of the docking connector of fig. 19;

fig. 22 is a schematic view of the electrical connector of fig. 20 mated with the mating connector of fig. 21;

fig. 23 is a partial enlarged view of fig. 22 at position D.

Detailed description of the embodiments reference is made to the accompanying drawings in which:

connector assembly 1000	Electrical connector 100	Insulating base 1	Base 11
				Tongue plate portion 12	Accommodating groove 13	Module unit 2	Terminal module 2a
Insulating block 21	Signal contact 22	Main body 221	The first conductive connection portion 222
				First welding part 223	Ground contact 23	Second lead-in part 231	Third lead-in part 232
Grounding strip 24	Second welding part 241	Intermediate shield plate 2b	Abutment arm					25
				Shielding 3	Sheet body portion 31	Spring arm 32	Convex hull 33
Docking connector 200	Insulating body 4	Socket 41	Accommodating groove 42
				Groove 43	Shielding part 44	Accommodation space 45	Module unit 5
Terminal module 5a	Plastic block	51	Signal terminal 52					Body portion 521
				First contact portion 522	Contact surface 5221	First leg 523	Center plane P1
Grounding terminal
	53	Second contact portion 531	Third contact portion 532	Grounding plate 54
Second solder tail 541					Shielding plate 6	Outburst bag 61	Insulating part M
	Convex part M1	Concave hole M2	Circuit board 2000	Substrate 3000

[ detailed description ] embodiments

For better understanding of the objects, structures, features, and functions of the present invention, reference should now be made to the drawings and detailed description of the invention.

For convenience, the specific structure of the connector assembly of the present invention is described, defining the front-back direction, the left-right direction and the up-down direction, the forward direction of the X axis is defined in the front-back direction, the forward direction of the Y axis is defined in the left-right direction, and the forward direction of the Z axis is defined in the up-down direction.

As shown in fig. 1 to 18, a first embodiment of a connector assembly 1000 of the present invention is provided, the connector assembly 1000 is used for electrically connecting a circuit board 2000 to a substrate 3000, the connector assembly 1000 includes an electrical connector 100 and a mating connector 200 that are plugged into each other, the electrical connector 100 is a vertical connector and is connected to the circuit board 2000 in a forward direction, the mating connector 200 is a right-angle connector and is connected to the substrate 3000 in a downward direction, and the mating connector 200 is plugged into the electrical connector 100 in a forward direction and in a backward direction.

As shown in fig. 3 and 4, the electrical connector 100 includes an insulating base 1, a plurality of module units 2 and a plurality of shielding members 3, wherein the module units 2 and the shielding members 3 are disposed on the insulating base 1, and the module units 2 are arranged in a row in the left-right direction. Each module unit 2 is correspondingly provided with two shielding pieces 3, the two shielding pieces 3 are positioned at the left and right outer sides of the module unit 2, and each module unit 2 comprises two terminal modules 2a arranged in parallel in the left and right direction and a middle shielding piece 2b positioned between the two terminal modules 2 a. In other embodiments, only one module unit 2 may be provided, only one shield 3 may be provided, and each module unit 2 may include only one terminal module 2 a.

As shown in fig. 3 and 9, the insulating base 1 includes a base 11, a plurality of tongue portions 12 and a plurality of receiving grooves 13, wherein the tongue portions 12 are arranged in parallel at intervals along the left-right direction. Each of the tongue portions 12 is formed to project rearward from the base portion 11, and the tongue portions 12 are used to insert the mating connector 200 rearward. Each of the accommodating grooves 13 is formed by being recessed rearward from the front surface of the base portion 11, a plurality of the accommodating grooves 13 are also arranged in parallel in the left-right direction, every two adjacent accommodating grooves 13 are separated by a partition (not shown), the plurality of accommodating grooves 13 are arranged in front of and behind the plurality of tongue plate portions 12 in a one-to-one correspondence manner, each of the accommodating grooves 13 accommodates one of the module units 2 and two corresponding shielding members 3, the accommodating groove 13 is located in front of the corresponding tongue plate portion 12, two terminal modules 2a in each of the module units 2 are exposed rearward on the left and right surfaces of the tongue plate portion 12, and the intermediate shielding piece 2b extends rearward into the tongue plate portion 12 and is not exposed on the surface of the tongue plate portion 12 in the left-right direction. In other embodiments, only one accommodating groove 13 may be provided for accommodating a plurality of module units 2 and a plurality of corresponding shielding members 3.

As shown in fig. 3, 4 and 9, each of the terminal modules 2a includes an insulating block 21, a plurality of signal contacts 22, a plurality of ground contacts 23 and a ground plate 24, the signal contacts 22, the ground contacts 23 and the ground plate 24 are all fixed to the insulating block 21, and in this embodiment, the signal contacts 22, the ground contacts 23 and the ground plate 24 are formed on the insulating block 21 by insert-molding. The plurality of signal contacts 22 are arranged in a row in the up-down direction, and a plurality of signal contacts 22 are provided in pairs and are also provided individually, and each of the signal contacts 22 provided in pairs is used for transmitting differential signals. The plurality of ground contacts 23 are integrally bent and extended backward from the ground strip 24, the plurality of ground contacts 23 are arranged in a row in the up-down direction, when viewed in the left-right direction, the plurality of signal contacts 22 and the plurality of ground contacts 23 are arranged in a row in the up-down direction, and a pair of signal contacts 22 is arranged between every two adjacent ground contacts 23, that is, one ground contact 23 is distributed on each of the upper and lower sides of each paired signal contact 22. The shielding member 3 and the grounding piece 24 are located at the left and right sides corresponding to the signal contact 22 on the terminal module 2 a. In other embodiments, only one signal contact 22 may be disposed between two adjacent ground contacts 23, and a plurality of signal contacts 22 may be disposed in pairs.

As shown in fig. 3, 5 and 9, in the present embodiment, two corresponding rows of the signal contacts 22 in each module unit 2 are located on the left and right sides of the tongue portion 12, two rows of the ground contacts 23 are located on the left and right sides of the tongue portion 12, in one module unit 2, two ground pads 24 are located between the two rows of the signal contacts 22, and the middle shielding pad 2b is located between the two ground pads 24 of the same module unit 2.

As shown in fig. 1, 4 and 6, the signal contact 22 includes a main body 221, a first conductive portion 222 and a first soldering portion 223, the main body 221 is embedded and molded in the corresponding insulating block 21, the ground plate 24 and the shielding member 3 are located on the left and right sides of the main body 221, the first conductive portion 222 extends backward from the main body 221 and is shaped as a flat plate to be mated with the mating connector 200, and the first soldering portion 223 extends forward from the main body 221 and is soldered to the circuit board 2000.

As shown in fig. 6, 7 and 9, the ground contact 23 includes a second connection portion 231 and a third connection portion 232, the second connection portion 231 is curved and located behind the third connection portion 232, the third connection portion 232 is flat, the second connection portion 231 is separated from the tongue portion 12 in the left-right direction with respect to the third connection portion 232, the second connection portion 231 is located behind the first connection portion 222, and the first connection portion 222 is between the second connection portion 231 and the third connection portion 232 in the left-right direction.

As shown in fig. 2 and 6, the ground plate 24 includes a plurality of second soldering portions 241 formed to extend forward, and the plurality of second soldering portions 241 are arranged in the up-down direction to be soldered to the circuit board 2000.

As shown in fig. 3, 5 and 9, the middle shield piece 2b includes a plurality of abutting arms 25 formed to protrude from the left and right sides thereof, and the plurality of abutting arms 25 elastically abut to the two corresponding ground pieces 24 in the module unit 2 in the left-right direction.

As shown in fig. 3, 4 and 7, the shield 3 includes a sheet body 31, a plurality of spring arms 32 and a plurality of convex hulls 33. The plate body 31 is located on the side of the main body 221 of the signal terminals 52 in the corresponding row so as to shield the signal terminals 52, and the plate body 31 is engaged with the corresponding insulating block 21 through a hole and a boss (not shown) so that the shield member 3 is fixed to the corresponding terminal module 5 a.

As shown in fig. 3, 7 and 9, the elastic arm 32 is formed by bending and extending integrally from the rear end of the sheet body portion 31, the elastic arm 32 extends rearward beyond the rear surface of the base portion 11 but does not extend beyond the rear surface of the tongue portion 12, the elastic arm 32 is disposed at a distance from the tongue portion 12 in the left-right direction, two rows of the elastic arms 32 are disposed on both left and right sides of the tongue portion 12 corresponding to the two rows of the signal contacts 22, one row of the elastic arms 32 on the same side of the tongue portion 12 is disposed at a distance from one row of the first guide portions 222, the elastic arm 32 on the same side of the tongue portion 12 is distant from the tongue portion 12 in the left-right direction with respect to the signal contacts 22, and the elastic arm 32 on the same side of the tongue portion 12 is spaced from the signal contacts 22 in the left-right direction.

As shown in fig. 3, 6 and 8, the convex hulls 33 are formed to protrude from the blade body 31 toward the ground blade 24 and extend in the front-rear direction, the convex hulls 33 pass through the corresponding insulation blocks 21 to contact with the corresponding ground blade 24 to form electrical connection, and the convex hulls 33 are located between two adjacent pairs of signal contacts 22 in the up-down direction. In this embodiment, the convex hulls 33 are disposed on both upper and lower sides of each pair of signal contacts 22. In other embodiments, the convex hull 33 may protrude from the grounding plate 24 toward the shielding element 3, and the convex hull 33 passes through the corresponding insulating block 21 to contact with the corresponding shielding element 3 to form an electrical connection.

As shown in fig. 3, 7 and 9, the electrical connector 100 further includes a plurality of insulating members M, each of the insulating members M is fixedly disposed on a corresponding one of the elastic arms 32, and the insulating members M are at least partially located between the elastic arms 32 and the first conductive portions 222 in the left-right direction. The insulating member M is provided with a plurality of protrusions M1 formed to protrude toward the corresponding first conductive portions 222, and the plurality of protrusions M1 are arranged in parallel in the front-rear direction. In this embodiment, the insulating member M is fixed to the corresponding elastic arm 32 by insert molding, and the insulating member M is provided with a plurality of concave holes M2, where the concave holes M2 are formed by positioning the elastic arm 32 for an ejector pin of a mold in insert molding. In other embodiments, the insulating member M may be fixed to the elastic arm 32 by assembling, or in other manners, only one concave hole M2 may be provided.

As shown in fig. 2, 10 and 11, the docking connector 200 includes an insulating body 4, a plurality of module units 5 and a plurality of shielding plates 6, wherein the module units 5 and the shielding plates 6 are disposed on the insulating body 4, and the module units 5 are arranged in a row in the left-right direction. Each of the module units 5 includes two terminal modules 5a juxtaposed in the left-right direction, one of the shield plates 6 is disposed on one side of each of the terminal modules 5a in the left-right direction, and the two shield plates 6 disposed in the module unit 5 are located between the two terminal modules 5a in the corresponding module unit 5. In other embodiments, only one module unit 5 may be provided, only one shielding plate 6 may be provided, and each module unit 5 may include only one terminal module 5 a.

As shown in fig. 10, 15 and 16, the insulating housing 4 includes a plurality of slots 41, a plurality of receiving slots 42 and a plurality of grooves 43. The slots 41 are recessed rearward from the front surface of the insulating housing 4 for the tongue portion 12 to be inserted rearward, each of the receiving slots 42 is recessed forward from the rear surface of the insulating housing 4, a plurality of the receiving slots 42 are also arranged in parallel in the left-right direction, every two adjacent receiving slots 42 are separated by a partition (not shown), the receiving slots 42 are arranged in a front-to-back one-to-one correspondence with the slots 41, each of the receiving slots 42 is used for receiving the module unit 5 and the corresponding two shielding plates 6, and the receiving slot 42 is located behind the corresponding slot 41. Two rows of the grooves 43 are disposed on the left and right sides of the slot 41, the grooves 43 communicate with the slot 41 in the left-right direction, the grooves 43 penetrate the front surface of the insulating body 4 forward, and the two terminal modules 5a in one module unit 5 are exposed forward to the left and right sides of the corresponding slot 41. In this embodiment, a plurality of grooves 43 are formed in each row along the vertical direction, and the grooves 43 in the row are used for allowing a row of the elastic arms 32 to be inserted correspondingly one by one. In other embodiments, only one groove 43 may be provided in each row according to actual requirements, and a plurality of the elastic arms 32 in one row are correspondingly inserted into one groove 43; only one receiving groove 42 may be provided to receive the plurality of module units 5 and the plurality of shield plates 6.

As shown in fig. 10, 11 and 14, each of the terminal modules 5a includes a plastic block 51, a plurality of signal terminals 52, a plurality of ground terminals 53 and a ground plate 54, the signal terminals 52, the ground terminals 53 and the ground plate 54 are all fixed to the plastic block 51, and in this embodiment, the signal terminals 52, the ground terminals 53 and the ground plate 54 are molded on the plastic block 51 by insert-molding. The plurality of signal terminals 52 are arranged in a row in the up-down direction, and a pair of the plurality of signal terminals 52 and a single signal terminal are provided, and each of the pair of signal terminals 52 is used for transmitting a differential signal. The plurality of ground terminals 53 are integrally bent and extended forward from the ground plate 54, the plurality of ground terminals 53 are arranged in a row in the vertical direction, the plurality of signal terminals 52 and the plurality of ground terminals 53 are arranged in a row in the vertical direction when viewed in the left-right direction, and a pair of signal terminals 52 is arranged between every two adjacent ground terminals 53, that is, one ground terminal 53 is distributed on each of the upper and lower sides of each signal terminal 52 arranged in pairs. The ground plate 54 and the shield plate 6 are located on the left and right sides of the signal terminal 52 on the terminal module 5 a. In other embodiments, only one signal terminal 52 may be disposed between two adjacent ground terminals 53, and all of the signal terminals 52 may be disposed in pairs.

As shown in fig. 10 and 15, in this embodiment, two corresponding rows of the signal terminals 52 in each module unit 5 are located on the left and right sides of the slot 41, two corresponding rows of the ground terminals 53 are located on the left and right sides of the slot 41, two ground plates 54 in one module unit 5 are located on the left and right outer sides of two corresponding rows of the signal terminals 52, and one row of the grooves 43 located on the same side of the slot 41 and one row of the signal terminals 52 are arranged in a one-to-one correspondence in the left-to-right direction.

As shown in fig. 1, 10 and 12, the signal terminal 52 includes a main body 521, a first contact portion 522 and a first solder leg 523, the main body 521 is embedded and molded in the corresponding plastic block 51, the ground plate 54 and the shielding plate 6 are located at the left and right sides of the main body 521, the first contact portion 522 is formed by extending forward from the main body 521 and is shaped as a flat plate, and the first solder leg 523 is formed by extending downward from the main body 221 and is used for being soldered to the substrate 3000.

As shown in fig. 17, a side of the first contact portion 522 facing the first lead portion 222 in the left-right direction is provided with a contact surface 5221 defining a center plane P1, and the center plane P1 divides the contact surface 5221 into front and rear portions in the front-rear direction.

As shown in fig. 12, 13 and 15, the ground terminal 53 is provided with a second contact portion 531 and a third contact portion 532, the second contact portion 531 is curved, the third contact portion 532 is flat, the second contact portion 531 is located in front of the third contact portion 532, the second contact portion 531 is bent toward the slot 41 with respect to the third contact portion 532, the second contact portion 531 is located in front of the first contact portion 522, and the contact surface 5221 is located between the second contact portion 531 and the third contact portion 532 in the lateral direction with respect to the signal terminal 52 and the ground terminal 53 on the same side of the slot 41.

As shown in fig. 2 and 12, the ground plate 54 includes a plurality of second solder tails 541 formed by extending downward, and the second solder tails 541 are arranged along a front-back direction and are soldered to the substrate 3000.

As shown in fig. 10, 12 and 14, the shielding plate 6 is provided with a plurality of protruding packets 61, the protruding packets 61 are formed to protrude toward the ground plates 54 in the left-right direction, and penetrate through the corresponding plastic blocks 51 to be in contact with the corresponding ground plates 54 to form electrical connection, and each protruding packet 61 is located between two adjacent pairs of the signal terminals 52 when viewed from the left-right direction, that is, the protruding packets 61 are provided on both sides of each pair of the signal terminals 52. In other embodiments, the protruding packets 61 may protrude from the ground plate 54 toward the shielding plate 6, the protruding packets 61 penetrate through the corresponding plastic blocks 51 to contact with the corresponding shielding members 3 to form an electrical connection, and the number of the protruding packets 61 may be set according to requirements, or may be set as one.

As shown in fig. 15, 16 and 17, when the mating connector 200 is inserted into the electrical connector 100 forward, the tongue portion 12 is inserted into the slot 41 backward, the two rows of the ground contacts 23 on the left and right sides of the tongue portion 12 are correspondingly connected to the two rows of the ground terminals 53 on the left and right sides of the slot 41, and the two rows of the signal contacts 22 on the left and right sides of the tongue portion 12 are correspondingly connected to the two rows of the signal terminals 52 on the left and right sides of the slot 41. Specifically, the first contact portion 522 is inserted forward between the first guide portion 222 and the corresponding spring arm 32, and the insulator M carried by the spring arm 32 is inserted backward into the corresponding groove 43, the spring arm 32 carries the insulator M to impart a force to the first contact portion 522 in the left-right direction, that is, the protrusion M1 of the insulator M carried by the spring arm 32 abuts against the first contact portion 522, and the two protrusions M1 are located on the front and back sides of the center line, so that the contact surface 5221 of the first contact portion 522 forms a stable plate-to-plate surface contact with the first guide portion 222 in the left-right direction, thereby forming a stable electrical connection therebetween; meanwhile, the curved second contact portion 531 and the flat third contact portion 232 are in elastic contact in the left-right direction, and the flat third contact portion 532 and the curved second contact portion 231 are in elastic contact in the left-right direction, so that the ground terminal 53 and the ground contact 23 are in linear contact at two positions. The position where the first contact portion 522 contacts the first conduction portion 222 is defined between two contact positions of the ground terminal 53 and the ground contact 23 in the left-right direction, that is, the position where the first contact portion 522 contacts the first conduction portion 222 is defined between a contact position of the second contact portion 531 and the third conduction portion 232 and a contact position of the third contact portion 532 and the second conduction portion 231 in the left-right direction, as viewed in the up-down direction.

As shown in fig. 19 to 23, the present embodiment is different from the first embodiment in that: the elastic arm 32 is not fixedly provided with the insulating member M, the docking connector 200 is further provided with a plurality of insulating members M, a plurality of shielding portions 44 and a plurality of accommodating spaces 45, the number of the plurality of insulating members M, the number of the plurality of shielding portions 44 and the number of the plurality of accommodating spaces 45 are the same as the number of the plurality of signal terminals 52, and the plurality of insulating members M, the plurality of shielding portions 44 and the number of the accommodating spaces 45 are arranged in a one-to-one correspondence with the first contact portions 522 in the left-to-right direction, that is, two rows of insulating members M and two rows of accommodating spaces 45 are arranged on the left-to-right side of the slot 41, each row of insulating members M is provided with a plurality of insulating members M, one row of first contact portions 522 on the same side of the slot 41 is respectively arranged in a one-to-one correspondence with one row of insulating members M and one row of accommodating spaces 45 in the left-to-right direction, and the insulating members M are cantilever structures formed by extending forward from the insulating body 4, the insulating member M does not extend forward beyond the front end surface of the insulating body 4, the insulating member M is disposed away from the insertion slot 41 relative to the first contact portion 522, the shielding portion 44 is disposed away from the insertion slot 41 relative to the insulating member M, and the accommodating space 45 is formed between the shielding portion 44 and the insulating member M. The other structures in the second embodiment of the present invention are the same as those in the first embodiment, and therefore are not described again.

As shown in fig. 19 to 23, when the mating connector 200 is inserted into the electrical connector 100 forward, the tongue portion 12 is inserted into the slot 41 backward, the two rows of the ground contacts 23 on the left and right sides of the tongue portion 12 are correspondingly connected to the two rows of the ground terminals 53 on the left and right sides of the slot 41, and the two rows of the signal contacts 22 on the left and right sides of the tongue portion 12 are correspondingly connected to the two rows of the signal terminals 52 on the left and right sides of the slot 41. Specifically, the first contact portion 522 is inserted forward between the first guide portion 222 and the corresponding elastic arm 32, the elastic arm 32 is inserted backward into the corresponding accommodating space 45, the elastic arm 32 drives the insulating member M to apply a force to the corresponding first contact portion 522 in the left-right direction, so that the flat-plate-shaped first contact portion 522 and the flat-plate-shaped first guide portion 222 form a stable plate-to-plate surface contact in the left-right direction, that is, the elastic arm 32 pushes the corresponding insulating member M, so that the insulating member M abuts against the first contact portion 522, and the first contact portion 522 stably contacts the first guide portion 222 in the left-right direction to form a stable electrical connection; meanwhile, the curved second contact portion 531 and the flat third contact portion 232 are in elastic contact in the left-right direction, and the flat third contact portion 532 and the curved second contact portion 231 are in elastic contact in the left-right direction, so that the ground terminal 53 and the ground contact 23 are in linear contact at two positions. The position where the first contact portion 522 contacts the first conduction portion 222 is defined between two contact positions of the ground terminal 53 and the ground contact 23 in the left-right direction, that is, the position where the first contact portion 522 contacts the first conduction portion 222 is defined between a contact position of the second contact portion 531 and the third conduction portion 232 and a contact position of the third contact portion 532 and the second conduction portion 231 in the left-right direction, as viewed in the up-down direction. In other embodiments, the insulator M may be assembled to the insulator body 4 as desired; the shielding portion 44 on one side of the slot 41 may be only provided with one, one row of the insulating members M and the shielding portion 44 form one accommodating space 45, and one row of the elastic arms 32 is correspondingly inserted into one accommodating space 45 and respectively abuts against one row of the insulating members M.

To sum up, the utility model discloses an electric connector 100 and connector subassembly 1000 have following beneficial effect:

1. the first contact portion 522 of the signal terminal 52 is shaped like a flat plate, the first contact portion 222 of the signal contact 22 is shaped like a flat plate, the spring arm 32 formed by extending the shield 3 is provided corresponding to the first contact portion 222 in the left-right direction, the insulator M is at least partially positioned between the spring arm 32 and the first contact portion 222 in the left-right direction, and the first contact portion 522 is inserted between the first contact portion 222 and the spring arm 32 in the front-back direction, so that the first contact portion 522 and the first contact portion 222 are in surface contact with each other in the left-right direction, thereby reducing the antenna effect and facilitating the transmission of high-frequency signals; meanwhile, the elastic arm 32 drives the insulating member M to apply a force to the first connection portion 222 toward the first contact portion 522 in the left-right direction, so as to increase a positive force between the first contact portion 522 and the first connection portion 222, and make the first contact portion 522 and the first connection portion 222 stably contact in the left-right direction, thereby forming a stable electrical connection, and avoiding the occurrence of an open circuit caused by the first contact portion 522 and the first connection portion 222 separating from each other in an environment where the connector assembly 1000 is subjected to an external force or a vibration.

2. The insulating member M protrudes toward the first conductive portion 222 to form two protrusions M1, so as to prevent the insulating member M from shrinking and causing poor contact between the signal terminal 52 and the signal contact 22, increase the forward force between the first conductive portion 522 and the first conductive portion 222 at the position corresponding to the protrusion M1, and position the two protrusions M1 at the front and rear sides of the center line, so that the forward force between the first conductive portion 222 and the first contact portion 522 is balanced, and the first conductive portion 222 and the first contact portion 522 are in stable contact.

3. The second contact portion 531 of the ground terminal 53 is located in front of the first contact portion 522 of the signal terminal 52, and the second connection portion 231 of the ground contact 23 is located behind the first connection portion 222 of the signal contact 22, so that the ground terminal 53 and the ground contact 23 contact the signal contact 22 before the signal terminal 52, thereby ensuring the integrity of signal transmission.

4. The shielding part 3 and the grounding strip 24 are located at the left side and the right side of the signal contact 22 corresponding to the terminal module 5a, and the two are in contact to form electrical connection, so that signal interference between two adjacent rows of the signal contacts 22 is shielded, and high-frequency signal transmission is facilitated.

5. Module unit 2 is including being located two shielding piece 2b in the middle of between the terminal module 2a, middle shielding piece 2b is located and corresponds two in the module unit 2 between the grounding piece 24, and respectively with two the grounding piece 24 contact is with the shielding is same two in the module unit 2 signal interference between the signal contact 22 is favorable to transmitting high frequency signal.

6. The convex hull 33 formed by the protruding extension of the shielding member 3 contacts with the grounding strip 24 to form an electrical connection, and the convex hull 33 is located between two adjacent pairs of the signal contacts 22 in the up-down direction to shield the signal interference between two adjacent pairs of the signal contacts 22 in the same row of the signal contacts 22, which is beneficial to transmitting high-frequency signals.

7. The grounding plate 54 and the shielding plate 6 are located at the left and right sides of the signal terminal 52 corresponding to the terminal module 2a, and the two are in contact to form an electrical connection, so as to shield signal interference between two adjacent rows of the signal terminals 52, which is beneficial to transmitting high-frequency signals.

8. The protruding bag 61 formed by protruding the shielding plate 6 contacts with the ground plate 54 to form an electrical connection, and when viewed from the left-right direction, the protruding bag 61 is located between two adjacent pairs of the signal terminals 52 to shield signal interference between two adjacent rows of the signal terminals 52 in the same row of the signal terminals 52, which is beneficial to transmitting high-frequency signals.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all the equivalent technical changes using the description and drawings of the present invention are included in the scope of the present invention.

Claims (21)

1. A connector assembly comprising an electrical connector and a mating connector mated together, the connector assembly comprising:

the electric connector comprises an insulating base body, at least one terminal module and at least one shielding piece, wherein the terminal module is arranged on the insulating base body and comprises at least one signal contact, the signal contact is provided with a first flat-plate-shaped guide connection part, the shielding piece is provided with at least one elastic arm, and the elastic arm is arranged corresponding to the first guide connection part in the left-right direction;

the butting connector comprises an insulating body and at least one terminal module arranged on the insulating body, the terminal module comprises at least one signal terminal, the signal terminal is provided with a flat first contact part, and the first contact part is inserted between the first guide part and the elastic arm along the front-back direction and is contacted with the first guide part in the left-right direction so as to form electrical connection;

one of the butting connector and the electric connector is provided with at least one insulating piece, at least one part of the insulating piece is positioned between the elastic arm and the first guide connecting part in the left-right direction, and the elastic arm drives the insulating piece to apply a force towards the first contact part in the left-right direction, so that the first contact part and the first guide connecting part are stably contacted in the left-right direction to form stable electric connection.

2. The connector assembly of claim 1, wherein: the first contact part is provided with a contact surface facing the first guide part in the left-right direction, a central surface is defined, the central surface divides the contact surface into a front part and a rear part in the front-rear direction by using the center of the contact surface, the insulating part is provided with two convex parts formed by protruding towards the first guide part, and the two convex parts are positioned on the front side and the rear side of the central surface.

3. The connector assembly of claim 1, wherein: the terminal module further comprises a plurality of grounding terminals, at least one signal terminal is arranged between every two adjacent grounding terminals, the grounding terminals are provided with a bent second contact part, the terminal module further comprises a plurality of grounding contacts, at least one signal contact is arranged between every two adjacent grounding contacts, the butting connector is defined to be inserted into the electric connector forwards, and the second contact part is located in front of the first contact part and is in elastic contact with the grounding contacts.

4. The connector assembly of claim 3, wherein: the grounding terminal is provided with a third flat-plate-shaped contact part which is positioned behind the second contact part, the grounding contact is provided with a second bent guide connection part and a third flat-plate-shaped guide connection part which is positioned in front of the second guide connection part, the second contact part is in elastic contact with the third guide connection part, and the third contact part is in elastic contact with the second guide connection part, so that the grounding terminal and the grounding contact form two-position contact.

5. The connector assembly of claim 4, wherein: the position where the first contact portion contacts the first lead-out portion is between two contact positions of the ground terminal and the ground contact in the left-right direction, as viewed in the up-down direction.

6. The connector assembly of claim 1, wherein: the terminal module further comprises a plurality of grounding contacts, two adjacent signal contacts are arranged between every two adjacent grounding contacts and used for transmitting differential signals, a bent second guide connection portion is arranged on each grounding contact, two adjacent signal terminals are arranged between every two adjacent grounding terminals and used for transmitting differential signals, the butting connector is defined to be inserted into the electric connector forwards, and the second guide connection portion is located behind the first guide connection portion and in elastic contact with the grounding terminals.

7. The connector assembly of claim 1, wherein: the insulating part is fixed on the elastic arm.

8. The connector assembly of claim 7, wherein: the insulating piece is formed on the elastic arm through embedding, at least one concave hole is formed in the insulating piece, and an ejector pin of a die is used for positioning the elastic arm in embedding and embedding.

9. The connector assembly of claim 1, wherein: the insulating part is integrally formed on the insulating body, and the insulating part is of a cantilever structure formed by extending forwards from the insulating body.

10. The connector assembly of claim 9, wherein: the insulating body is provided with a shielding part at the position corresponding to the insulating part in the left-right direction, an accommodating space is formed between the shielding part and the insulating part, and the elastic arm protrudes into the accommodating space.

11. The connector assembly of claim 1, wherein: the insulating body comprises at least one slot, the butting connector is provided with two rows of signal terminals on the left side and the right side of the slot, the insulating base body comprises a base part and at least one tongue plate part formed by the base part protruding backwards, the electric connector is correspondingly provided with two rows of signal contacts and two rows of elastic arms at the left side and the right side of the tongue plate part, the row of the elastic arms on the same side of the tongue plate part is far away from the tongue plate part in the left-right direction relative to the row of the signal contacts, the resilient arm extends rearwardly beyond the rear surface of the base but not beyond the rear surface of the tongue portion, the elastic arm and the tongue plate part are arranged at intervals in the left and right directions, the tongue plate part is inserted into the slot backwards, and correspondingly connecting the two rows of signal contacts on the left side and the right side of the tongue plate part with the two rows of signal terminals on the left side and the right side of the slot.

12. The connector assembly of claim 11, wherein: the insulation body comprises two rows of grooves arranged on the left side and the right side of the slot, the grooves are formed by being formed by the fact that the front surface of the insulation body is recessed backwards, the tongue plate portion is inserted into the slot backwards, and the elastic arm carries the insulation piece to be inserted into the grooves.

13. The connector assembly of claim 1, wherein: electric connector is including a plurality of terminal module, a plurality of shield and an at least middle shield piece are a plurality of the terminal module sets up side by side on controlling the direction, each the terminal module includes a grounding piece, each the terminal module disposes one the shield, the shield with the grounding piece is located and corresponds in the terminal module the left and right sides of signal contact, adjacent two dispose one between the terminal module middle shield piece constitutes a module unit jointly, middle shield piece is located two between the grounding piece, and respectively with two the grounding piece contact, two the shield is located and is corresponded two relative outsides of module unit.

14. The connector assembly of claim 1, wherein: the terminal module still includes a grounding lug and certainly a plurality of ground contact that the integrative bending type of grounding lug extended formation, it is a plurality of the ground contact is interval arrangement in the up-and-down direction, the shielding piece with the grounding lug is located and corresponds on the terminal module the left and right sides of signal contact, the signal contact is equipped with a plurality ofly, and is a plurality of the signal contact part sets up in pairs at least, and every pair is used for transmitting differential signal, and set up in pairs the relative both sides of signal contact respectively distribute one ground contact, the shielding piece with one of the grounding lug both is protruding to be equipped with at least a convex closure and contacts with another person and forms electric connection, the convex closure is located adjacent two pairs between the signal contact.

15. The connector assembly of claim 1, wherein: the terminal module is provided with a shielding plate at one side in the left-right direction, the terminal module further comprises a grounding plate and a plurality of grounding terminals formed by bending and extending the grounding plate integrally, the grounding terminals are arranged at intervals in the up-down direction, the grounding plate and the shielding plate are positioned at the left side and the right side of the signal terminals, the signal terminals are provided with a plurality of signal terminals, at least part of the signal terminals are arranged in pairs, each pair of signal terminals is used for transmitting differential signals, one grounding terminal is distributed at each of the two opposite sides of the signal terminals arranged in pairs, at least one protruding bag is convexly arranged on one of the shielding plate and the grounding plate and is in contact with the other one of the shielding plate and the grounding plate to form electrical connection, and the protruding bag is positioned between the two adjacent pairs of signal terminals.

16. An electrical connector for mating with a mating connector in a front-to-back direction, the mating connector including at least one signal terminal, the signal terminal including a first contact portion in a flat plate shape, the electrical connector comprising:

an insulating base;

the terminal module comprises at least one signal contact, and the signal contact is provided with a first flat-plate-shaped guide connection part;

the shielding piece is provided with at least one elastic arm, and the elastic arm is arranged corresponding to the first guide part in the left-right direction;

the insulating piece is arranged on the elastic arm, and at least part of the insulating piece is positioned between the elastic arm and the first guide connecting part in the left-right direction;

when the first contact part is inserted between the first guide part and the elastic arm along the front-back direction, the elastic arm drives the insulating part to apply a force towards the first contact part in the left-right direction, so that the first contact part and the first guide part are stably contacted in the left-right direction to form stable electrical connection.

17. The electrical connector of claim 16, wherein: the insulating part is provided with a plurality of convex parts which are formed by protruding towards the first guide connecting part and are contacted with the first contact part.

18. The electrical connector of claim 16, wherein: the terminal module further comprises a plurality of ground contacts for being correspondingly connected with a plurality of ground terminals of the butting connector in a conductive manner, the butting connector is defined to be inserted into the electric connector forwards, the ground contacts are provided with a bent second conductive connecting part, the second conductive connecting part is positioned behind the first conductive connecting part, and the second conductive connecting part is used for being in elastic contact with the ground terminals.

19. The electrical connector of claim 18, wherein: the grounding contact is further provided with a third flat-plate-shaped guide connecting part positioned in front of the second guide connecting part, the second guide connecting part and the third guide connecting part are used for guiding and connecting the same grounding terminal, and the first guide connecting part is arranged between the second guide connecting part and the third guide connecting part in the left-right direction.

20. The electrical connector of claim 16, wherein: the insulating piece is embedded and formed on the elastic arm.

21. The electrical connector of claim 16, wherein: the insulating base body comprises a base portion and at least one tongue plate portion which is formed by protruding backwards from the base portion, two rows of signal contacts and two rows of elastic arms are correspondingly arranged on the left side and the right side of the tongue plate portion of the electric connector, one row of elastic arms on the same side of the tongue plate portion is far away from the tongue plate portion in the left-right direction relative to one row of signal contacts, the elastic arms extend backwards to exceed the rear surface of the base portion but do not exceed the rear surface of the tongue plate portion, and the elastic arms and the corresponding insulating pieces are arranged at intervals with the tongue plate portion in the left-right direction.

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