CN109301544B

CN109301544B - Electrical connector

Info

Publication number: CN109301544B
Application number: CN201811170243.4A
Authority: CN
Inventors: 刘军
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2018-10-09
Filing date: 2018-10-09
Publication date: 2020-09-25
Anticipated expiration: 2038-10-09
Also published as: CN109301544A

Abstract

The invention discloses an electric connector, which is electrically connected with a first element forwards and electrically connected with a second element backwards in a guiding way, and is characterized by comprising the following components: an insulating block; the upper row of terminals is arranged on the insulating block and provided with at least one first signal terminal, the lower row of terminals is arranged on the insulating block and provided with at least one second signal terminal, the first signal terminal and the second signal terminal extend backwards out of the rear part of the insulating block, and the first signal terminal and the second signal terminal are at least partially overlapped in the vertical direction of the insulating block; and the shielding sheet is fixed on the insulating block and positioned between the upper row of terminals and the lower row of terminals, the shielding sheet is provided with at least one groove and positioned behind the insulating block, and the groove is positioned between the first signal terminal and the second signal terminal.

Description

Electrical connector

Technical Field

The present invention relates to an electrical connector, and more particularly, to an electrical connector for transmitting high frequency.

Background

An electrical connector includes an insulative housing, the insulative housing includes an insulative block integrally injection molded with two rows of terminals, and an intermediate shielding plate located between the two rows of terminals for shielding. The terminal is provided with a fixed part embedded in the insulating block, a contact part extends forwards from the fixed part, an arc contact point is arranged on the contact part and is contacted with the butting connector, a pin extends backwards from the fixed part, and a contact part is arranged on the pin and is contacted with the circuit board.

Among them, the transmission rate of the electrical connector in the prior art is 40Gbps, but with the development of digital technology, the electrical connector with the transmission rate of 40Gbps is still not enough, and the electrical connector with higher transmission rate is necessary, and the impedance is matched while the rate of the electrical connector is improved, and the impedance of the terminal in the prior art is not matched with the increasing rate of the electrical connector. .

Therefore, there is a need for a new electrical connector to overcome the above problems.

Disclosure of Invention

The invention aims to provide an electric connector which is provided with a plurality of signal terminals which are arranged into two rows of opposite upper and lower rows, and a shielding sheet which is provided with a groove is positioned between the two rows of signal terminals, thereby adjusting the impedance.

In order to achieve the purpose, the invention adopts the following technical scheme: an electrical connector for electrically mating a first component in a forward direction and electrically mating a second component in a rearward direction, comprising: an insulating block; the upper row of terminals is arranged on the insulating block and provided with at least one first signal terminal, the lower row of terminals is arranged on the insulating block and provided with at least one second signal terminal, the first signal terminal and the second signal terminal extend backwards out of the rear part of the insulating block, and the first signal terminal and the second signal terminal are at least partially overlapped in the vertical direction of the insulating block; and the shielding sheet is fixed on the insulating block and positioned between the upper row of terminals and the lower row of terminals, the shielding sheet is provided with at least one groove and positioned behind the insulating block, and the groove is positioned between the first signal terminal and the second signal terminal. .

Further, the insulating block has a first insulating block and a second insulating block, the upper row of terminals is disposed in the first insulating block, the lower row of terminals is disposed in the second insulating block, and the shielding plate is sandwiched between the first insulating block and the second insulating block.

Further, the upper row of terminals has a pair of first differential signal terminals, the lower row of terminals has a pair of second differential signal terminals, the plurality of grooves has a first groove, the first differential signal terminals and the second differential signal terminals at least partially overlap in the up-down direction of the insulating body, and the first groove is located between the first differential signal terminals and the second differential signal terminals.

Furthermore, the first differential signal terminal is provided with a connecting part, the connecting part is provided with a first section and a second section which extends forwards from the first section, the first section extends backwards to form the first insulating block, the second section is fixed on the first insulating body, the distance between every two adjacent first sections is greater than that between every two adjacent second sections, a turning section is connected with the first section and the second sections, and the turning sections and the groove bottoms of the first grooves are arranged in a vertically corresponding mode.

Further, the first differential signal terminal and the second differential signal terminal are arranged in a vertical symmetry manner.

Further, the upper row of terminals has a pair of first low-speed signal terminals, the lower row of terminals has a pair of second low-speed signal terminals, the first low-speed signal terminals and the second low-speed signal terminals at least partially overlap in the up-down direction of the insulating body, and the plurality of grooves have a second groove located between the first low-speed signal terminals and the second low-speed signal terminals.

Furthermore, a first concave cavity is concavely arranged on the rear surface of the first insulating block, a second concave cavity is concavely arranged at the rear end of the second insulating block, and the first groove is located between the first concave cavity and the second concave cavity.

Furthermore, the cavity bottom of the first concave cavity is flush with the cavity bottom of the second concave cavity up and down, and the groove bottom of the first groove is flush with the cavity bottom of the first concave cavity up and down.

Further, the first differential signal terminals are exposed in the first cavity, and the second differential signal terminals are exposed in the second cavity.

Further, an abutting part is arranged between the first groove and the second groove and used for abutting against the second element.

Furthermore, each terminal has a connecting portion fixed to the insulating block, the connecting portion is horizontally disposed in a front-rear direction, a rear end of the connecting portion is exposed behind the insulating block, and the groove corresponds to the rear end of the connecting portion of the first signal terminal and the rear end of the connecting portion of the second signal terminal.

Furthermore, the connector comprises an insulating body for accommodating the insulating block and the plurality of terminals, the rear end of the insulating body is concavely provided with an accommodating cavity for accommodating the second element, and the groove is positioned in the accommodating cavity.

Furthermore, each terminal is provided with a connecting part which is fixed in the insulating block, a first conduction part extends forwards from the front end of the connecting part and is electrically contacted with the first element, the first conduction parts are arranged in the butt joint cavity in an upper row and a lower row, a second conduction part extends backwards from the rear end of the connecting part and is electrically connected with the second element, and the second conduction parts are arranged in the accommodating cavity in an upper row and a lower row.

Furthermore, the second element is a circuit board, the second element is inserted between the two rows of the guide connection parts and abutted to the shielding plate, and the groove is located in front of the second element.

Compared with the prior art, the groove is exposed at the rear end of the insulating block, the first signal terminal and the second signal terminal extend backwards to the rear end of the insulating block, and the groove is located between the first signal terminal and the second signal terminal, so that the facing area between the first signal terminal and the second signal terminal is increased, the impedance characteristic between the first signal terminal and the second signal terminal is adjusted, and the impedance requirement of the electric connector with better speed is met.

[ description of the drawings ]

Fig. 1 is an exploded perspective view of an electrical connector according to an embodiment of the present invention;

fig. 2 is an exploded perspective view of the electrical connector of fig. 1 from another perspective;

fig. 3 is a perspective assembly view of the electrical connector of fig. 1;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;

fig. 5 is an exploded perspective view of a first dielectric block and a second dielectric block of the electrical connector of fig. 1;

fig. 6 is a top view of a first terminal module of the electrical connector of fig. 1;

FIG. 7 is an assembled plan view of the first and second insulator blocks of FIG. 1;

fig. 8 is a perspective view of the upper and lower rows of terminals of the electrical connector of fig. 1;

fig. 9 is a perspective assembly view of the first and second dielectric blocks and the shield plate of the electrical connector of fig. 1;

fig. 10 is a perspective cross-sectional view of a first terminal module, a second terminal module and a shield blade of the electrical connector of fig. 1;

fig. 11 is a cross-sectional view of the electrical connector of fig. 9;

fig. 12 is a cross-sectional view of the electrical connector of fig. 9.

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

insulating body	1	Butt joint cavity	10	Upper plate	11
						Upper convex part	110	Lower plate	12	Lower convex part	120
Side plate	13	Channel	130	Terminal groove	14
						Through hole	15	Non-through hole	16	Containing cavity	17
Side wall	18	Through hole	180
						Terminal with a terminal body	2	Connecting part	20	First stage	201
Second section	202	Turning section	203	The first conduction part	21
						First contact point	210	The second conduction part	22	Second contact point	220
A bent part	221
						First ground terminal	G1	First differential signal terminal	S1	First power supply terminal	P1
First reserved terminal	V1	First low-speed terminal	D1
						Second ground terminal	G2	Second differential signal terminal	S2	Second power supply terminal	P2
Second reserved terminal	V2	Second low-speed terminal	D2
						Insulating block	3	First insulating block	3A	The first through groove	31
First concave cavity	32	First bottom surface	320	A first positioning groove	33
						Upper matching surface	34	First positioning column	341	First limit protrusion	342
The first blocking part	343	First opening	3430	First terminal module	M1
						Second insulating block	3B	Second through groove	31’	Second cavity	32’
Second bottom surface	320’	Second positioning groove	33’
						Lower mating surface	35	Second positioning column	351	Second limit protrusion	352
Second stop part	353	Second terminal module	M2
						Shielding sheet
	4	Base part	40	Locating hole	401
						First convex part	41			Second convex part	42
Gap	420	Lock catch arm	43	Pin	44
						Clamping part	45	The first groove	46	Second groove	47
Abutting part	48	First tank bottom	460	Second groove bottom	470
						Grounding piece	5	Main body part	50	Buckle slot	501
First extension arm	51	Second extension arm	52	First elastic sheet	520
						Second elastic sheet	530
Metal shell	6
						Socket connector	200
Circuit board	300	First gasket	301	Second gasket	302

[ detailed description ] embodiments

For a better understanding of the objects, structure, features, and functions of the invention, reference should be made to the drawings and detailed description that follow.

Referring to fig. 1, fig. 2 and fig. 3, an electrical connector 100 according to an embodiment of the present invention is shown, the electrical connector 100 according to the embodiment is a TYPE C plug connector, and the electrical connector 100 is forward mated with a receptacle connector 200 and backward mounted on a circuit board 300. The electrical connector 100 includes an insulative housing 1, the insulative housing 1 houses a first terminal module M1, a second terminal module M2 and a shielding plate 4, the shielding plate 4 is between the first terminal module M1 and the second terminal module M2. The two grounding sheets 5 are vertically 180 degrees symmetrical and respectively cover the upper surface and the lower surface of the insulating body 1. A metal shell 6 covers the two grounding strips 5 and the insulating body 1.

Referring to fig. 1, 2 and 4, a mating cavity 10 is formed at the front end of the insulating housing 1 for mating with the receptacle connector 200, and the mating cavity 10 is formed by an upper plate 11, a lower plate 12 and two side plates 13 connecting the upper plate 11 and the lower plate 12. An upper protrusion 110 protrudes upward from the upper surface of the upper plate 11, and a lower protrusion 120 protrudes from the lower surface of the lower plate 12. The upper convex portion 110 and the lower convex portion 120 are disposed vertically symmetrically. Each side plate 13 has a passage 130 disposed therethrough, and the passage 130 communicates with the docking chamber 10. The plurality of terminal grooves 14 are divided into two rows which are symmetrical up and down and are respectively arranged on the upper plate 11 and the lower plate 12, each terminal groove 14 is communicated with the docking cavity 10, the terminal grooves 14 on the upper row do not penetrate through the upper plate 11 upwards, and the terminal grooves 14 on the lower row do not penetrate through the lower plate 12 downwards. The upper protrusions 110 are adjacent to the front ends of the upper rows of the terminal grooves 14, and the lower protrusions 120 are adjacent to the front ends of the lower rows of the terminal grooves 14. A plurality of through holes 15 provided in the upper plate 11 and the lower plate 12 and forming two rows of upper and lower rows, respectively, an upper row of the through holes 15 penetrating the upper plate 11, a lower row of the through holes 15 penetrating the lower plate 12, and each of the through holes 15 being located in front of all of the terminal grooves 14. A non-through hole 16 is formed between two adjacent through holes 15 in the same row, each non-through hole 16 in the upper row does not penetrate through the upper plate 11, and each non-through hole 16 in the lower row does not penetrate through the lower plate 12.

The rear end of the insulating body 1 is recessed to form an accommodating cavity 17, and the circuit board 300 is inserted into the accommodating cavity 17. Two side walls 18 extend from two sides of the rear end of the insulating body 1 respectively, each side wall 18 is provided with a through hole 180 which penetrates outwards, and the through holes 180 are communicated with the outside and the accommodating cavity 17.

Referring to fig. 1, 2 and 5, a plurality of terminals 2 are arranged in two rows and are symmetrically arranged at 180 °, and the 180 ° symmetry in the present invention means that the terminals are completely overlapped after being turned at 180 °. Wherein the number of the upper row terminals 2 is 12, and it includes a plurality of first signal terminals, which are composed of two pairs of first differential signal terminals S1 and one pair of first low-speed terminals D1. The upper row terminal 2 is sequentially provided with a first ground terminal G1, a pair of first differential signal terminals S1 for transmitting USB 3.0 signals, a first power terminal P1, a first reserved terminal V1, a pair of first low-speed terminals D1 for transmitting USB2.0 signals, a first reserved terminal V1, a first power terminal P1, a pair of first differential signal terminals S1 for transmitting USB 3.0 signals, and a first ground terminal G1 from left to right. The number of the terminals 2 in the lower row is 12, and the terminals include a plurality of second signal terminals, which are composed of two pairs of second differential signal terminals S2 and a pair of second low-speed signal terminals D2. The upper row of terminals sequentially comprises a second ground terminal G2, a pair of second differential signal terminals S2 for transmitting USB 3.0 signals, a second power terminal P2, a second reserved terminal V2, a pair of second low-speed signal terminals D2 for transmitting USB2.0 signals, a second reserved terminal V2, a second power terminal P2, a pair of second differential signal terminals S2 for transmitting USB 3.0 signals, and a second ground terminal G2 from left to right. The first reserved terminal V1 and the second reserved terminal V2 can be used for detection, signal and power supply. Referring to fig. 5 and 6, each of the terminals 2 has a connection portion 20, and the connection portions 20 are located on the same horizontal plane in the front-rear direction. The connecting portion 20 of each of the first differential signal terminals S1 and each of the second differential signal terminals S2 have two first sections 201 located at the front and rear ends of the connecting portion 20, a second section 202 located between the two first sections 201, and two turning sections 203 respectively connecting the two first sections 201 at the front and rear ends of the second section 202. The distance t2 between two adjacent second segments 202 is smaller than the distance t1 between two adjacent first segments 201.

Referring to fig. 1, 7 and 8, a first conduction portion 21 is bent and extended forward from the front end of the connection portion 20 and along the vertical direction, and a second conduction portion 22 is bent and extended backward from the rear end of the connection portion 20 and along the vertical direction. The second conduction part 22 has a bending part 221 connected to the connection part 20. The end of the first conduction part 21 is disposed in an arc shape to form a first contact point 210, wherein the first contact point 210 of the upper row of terminals 2 is arched downward, the first contact point 210 of the lower row of terminals 2 is arched upward, and the first contact point 210 is in mechanical contact with the receptacle connector 200. The second conduction part 22 has an end arranged in an arc shape to form a second contact point 220, the second contact point 220 of the upper row of terminals 2 is arched downwards, and the second contact point 220 of the lower row of terminals 2 is arched upwards. Each of the terminals 2 has the following features: the distance in the up-down direction from the first contact point 210 to the connection portion 20 is larger than the distance in the up-down direction from the second contact point 220 to the connection portion 20.

Referring to fig. 5, 6 and 7, an insulating block 3 is composed of a first insulating block 3A and a second insulating block 3B, and the first insulating block 3A and the second insulating block 3B are vertically matched and symmetrically arranged at 180 °.

The first terminal module M1 is composed of an upper row terminal 2 and the first insulating block 3A, the connecting portion 20 of the upper row terminal 2 is embedded in the first insulating block 3A by injection molding in an inner-molding manner, the front end of the connecting portion 20 extends out of the front surface of the first insulating block 3A, the distance from the end of the first conduction portion 21 to the front surface of the first insulating block 3A is 3.55 ± 0.2mm, the rear end of the connecting portion 20 extends out of the rear surface of the first insulating block 3A, and the distance from the end of the second conduction portion 22 to the rear surface of the first insulating block 3A is 1.75 ± 0.2 mm.

Referring to fig. 5, 6 and 7, the first insulating block 3A has two first through grooves 31 and two first cavities 32, the first through groove 31 is disposed in the middle of the first insulating block 3A and penetrates through the upper and lower surfaces of the first insulating block 3A, and each first through groove 31 corresponds to a pair of the first differential signal terminals S1, such that the second section 202 of the pair of first differential signal terminals S1 is exposed in the first through groove 31. The first cavity 32 is formed by recessing from the rear surface of the first insulating block 3A, and penetrates through the upper and lower surfaces of the first insulating block 3A to define a first bottom surface 320 in the front-rear direction. Each of the first cavities 32 and one of the first through grooves 31 are located in the same row in the front-to-back direction, the first section 201 behind the first differential signal terminal S1 extends backward from the first cavity 32 to the first insulating block 3A, and the first bottom surface 320 corresponds to the turning section 203 at the back end of the first differential signal terminal S1. The first through groove 31 and the first cavity 32 are filled with air, and the dielectric coefficient of the air is smaller than that of the first insulating block 3A, so that the dielectric coefficient is effectively reduced, and the effect of adjusting the impedance of the first differential signal terminal S1 is achieved.

Two side surfaces of the first insulating block 3A are respectively provided with a first positioning groove 33 in a concave manner. The side surface of the first ground terminal G1 is exposed at the bottom of the first positioning groove 33, which is beneficial for the side surface of the first ground terminal G1 to be fixed by a clamp during the injection molding process, thereby being beneficial for the positioning of the first ground terminal G1.

Referring to fig. 1, 5 and 8, an upper mating surface 34 is formed on a lower surface of the first insulating block 3A, a first positioning column 341 and a first limiting protrusion 342 are integrally extended downward from the upper mating surface 34 and located in front of the first positioning column 341, and the first limiting protrusion 342 is disposed lengthwise in the front-rear direction and extends to the front surface of the first insulating block 3A. The height of the first position-limiting protrusion 342 is greater than the height of the first positioning column 341, and in this embodiment, the height of the first position-limiting protrusion 342 is greater than the height of the first positioning column 341 by 0.03 mm. A first blocking portion 343 extends downward from the left and right sides of the upper mating surface 34, and the first blocking portion 343 also extends forward to the front surface of the first insulating block 3A, two first blocking portions 343 are spaced apart in the left-right direction to define a first opening 3430, and the first opening 3430 extends to the front surface of the first insulating block 3A.

The second terminal module M2 is formed by integrally injection-molding the second insulating block 3B and the lower row of terminals 2. The first insulating block 3A and the second insulating block 3B are symmetrically arranged in the vertical direction and are fixedly matched with each other, a lower matching surface 35 is formed on the upper surface of the second insulating block 3B, and the upper matching surface 34 and the lower matching surface 35 are oppositely arranged in the vertical direction.

Referring to fig. 6, 9 and 10, the second insulating block 3B has two second through grooves 31 'and two second cavities 32', the second through groove 31 'is disposed at a middle position of the second insulating block 3B and penetrates upper and lower surfaces of the second insulating block 3B, each second through groove 31' corresponds to one pair of the second differential signal terminals S2, such that the second section 202 of one pair of the second differential signal terminals S2 is exposed in the second through groove 31 ', and the second through groove 31' is filled with air, so as to achieve an effect of adjusting impedance of the second differential signal terminal S2. The second cavity 32 'is formed by recessing from the rear surface of the second insulating block 3B, and penetrates through the upper and lower surfaces of the first insulating block 3A to define a second bottom surface 320' in the front-rear direction. Each of the second cavities 32 'is located in the same row as one of the second through grooves 31' in the front-rear direction, the first section 201 at the rear end of the second differential signal terminal S2 extends backward from the first cavity 32 to form the second insulating block 3B, the second bottom surface 320 'corresponds to the turning section 203 at the rear end of the second differential signal terminal S2, the turning section 203 increases the distance between the rear sections of the pair of second differential signal terminals S2, the second cavity 32' is filled with air, and the dielectric coefficient of the air is smaller than that of the second insulating block 3B, so that the overall dielectric coefficient is effectively reduced, and the impedance between the pair of second differential signal terminals S2 is maintained stable.

Referring to fig. 1, fig. 2 and fig. 5, a lower mating surface 35 is formed on the lower surface of the second insulating block 3B, a second positioning post 351 and a second limiting protrusion 352 located in front of the second positioning post 351 extend downward from the lower mating surface 35, and the second limiting protrusion 352 is disposed lengthwise in the front-back direction and extends to the front surface of the second insulating block 3B. The height of the second limiting protrusion 352 is greater than the height of the second positioning post 351, and in this embodiment, the height of the second limiting protrusion 352 is greater than the height of the second positioning post 351 by 0.03 mm. A second blocking portion 353 extends downwards from the left side and the right side of the lower mating surface 35, and the second blocking portion 353 also extends forwards to the front surface of the second insulating block 3B, two second blocking portions 353 are arranged at an interval in the left-right direction so as to define a second opening 3530, and the second opening 3530 extends to the front surface of the second insulating block 3B.

Two side surfaces of the second insulating block 3B are respectively provided with a second positioning slot 33' in a concave manner. The side surface of the second ground terminal G2 is exposed at the bottom of the second positioning groove 33', which is beneficial for the fixture to fix the side surface of the second ground terminal G2 during the injection molding process, thereby being beneficial for the positioning of the second ground terminal G2.

Referring to fig. 1, 2 and 5, a shield plate 4 is stamped and formed from a sheet of metal. The shield plate 4 has a base portion 40, and the base portion 40 has two positioning holes 401 aligned in the left-right direction, and the two positioning holes 401 are located on the left and right sides of the center line of the shield plate 4 in the front-rear direction. A first protrusion 41 and two second protrusions 42 located at the left and right sides of the first protrusion 41 extend forward from the middle of the front end of the base 40, the first protrusion 41 passes through the center line of the shielding plate 4 in the front-rear direction, and a notch 420 is formed between each of the second protrusions 42 and the first protrusion 41. The two notches 420 are respectively located on the left and right sides of the center line of the shielding plate 4 in the front-rear direction. Referring to fig. 1, 2 and 5, a latch arm 43 extends forward from each of two sides of the rear end of the base 40, and two legs 44 extend backward from each of the left and right sides of the rear end of the base 40, and an elastic space is formed between the latch arm 43 and the base 40 for elastically deforming the latch arm 43. The legs 44 pass through the same straight line in the front-rear direction as the latch arms 43 on the same side, respectively. One of the legs 44 is bent upward, and the other leg 44 is bent downward. A second groove 47 and first grooves 46 located at both sides of the second groove 47 are recessed from the rear end surface of the base 40. The bottom surface of the first groove 46 defines a first groove bottom 460 and the bottom surface of the second groove 47 defines a second groove bottom 470. The second groove 47 passes through a center line of the shield plate 4 in the front-rear direction, the second groove 47 is recessed to a depth smaller than that of the first groove 46, and the first groove bottom 460 is disposed further forward than the second groove bottom 470. Each of the first and

second grooves

46, 47 defines an abutting portion 48, the abutting portion 48 is disposed in a protruding manner relative to the first and

second groove bottoms

460, 470, and the first and

second grooves

46, 47 and the abutting portion 48 are disposed between the two pins 44. Furthermore, a retaining portion 45 extends horizontally from the left and right sides of the rear end of the base portion 40 toward the outside, and the first groove 46, the second groove 47 and the abutting portion 48 are located between the two retaining portions 45.

Referring to fig. 1, 2 and 3, each of the grounding strips 5 has a main body 50, the main body 50 has a fastening groove 501, a plurality of first extension arms 51 and a plurality of second extension arms 52 extend forward from the main body 50, and the plurality of first extension arms 51 and the plurality of second extension arms 52 are arranged in a row and are alternately disposed. The first extension arm 51 is bent into an arc shape along the up-down direction, the second extension arm 52 extends horizontally, and the second extension arm 52 is provided with a first elastic sheet 520 formed by tearing, wherein the first elastic sheet 520 is bent along the up-down direction and the free end of the first elastic sheet faces backwards. A plurality of second resilient pieces 530 extend backward from the end of the main body 50, the plurality of second resilient pieces 530 are arranged in a row at equal intervals, each of the second resilient pieces 530 is bent in the up-down direction, and the free end of each of the second resilient pieces 530 faces backward.

Referring to fig. 1, 2 and 3, the metal housing 6 is a tubular structure penetrating front and back and made of metal.

Referring to fig. 3, fig. 5 and fig. 6, the first terminal module M1 and the second terminal module M2 are vertically mounted and fixed together, wherein the shielding plate 4 is clamped between the upper mating surface 34 and the lower mating surface 35, and the base portion 40, the first protrusion 41 and the second protrusion 42 are clamped, attached and fixed by the upper mating surface 34 and the lower mating surface 35. The first limiting protrusion 342 and the second limiting protrusion 352 are first received in the left and right notches 420, and then the first positioning column 341 and the second positioning column 351 are received and clamped in the left and right positioning holes 401, the height of the first limiting protrusion 342 is greater than that of the first positioning column 341, and the height of the second limiting protrusion 352 is greater than that of the second positioning column 351, so that the first limiting protrusion 342 and the second limiting protrusion 352 can be first matched with the left and right notches 420 to initially position the shielding plate 4, and thus the first positioning column 341 and the second positioning column 351 can more easily enter the left and right positioning holes 401, which is convenient for installation and reduces installation errors. Referring to fig. 1, fig. 2 and fig. 5, the first blocking portion 343 and the second blocking portion 343' are disposed opposite to each other in a vertical direction and are correspondingly located in front of the second protrusion 42 to block the second protrusion 42 from moving forward. The first limiting protrusion 342 and the second limiting protrusion 352 are located at two sides of the first protrusion 41, the front end of the first protrusion 41 is received in the opening 3430 and does not exceed the front surface of the insulating block 3, and the first protrusion 41 is exposed in the first opening 3430 and the second opening 3530. While the first and

second stopper protrusions

342 and 352 restrict the first protrusion 41 from moving leftward or rightward, the first and

second openings

3430 and 3530 facilitate heat dissipation of the first protrusion 41.

Referring to fig. 10, 11 and 12, the rear end of the base 40 extends out of the rear surfaces of the first insulating block 3A and the second insulating block 3B and is located between the upper and lower rows of the second conductive parts 22, the first groove 46 and the second groove 47, the abutting part 48 is exposed at the rear of the insulating block 3, and the abutting part 48 does not exceed the bending part 221 rearward, so that crosstalk interference between the upper and lower rows of the second conductive parts 22 is reduced. The latch arm 43 and the holding portion 45 are exposed at the side of the insulating block 3, and the two pins 44 are, as viewed from top to bottom, two rows of the second conducting portions 22 are located between the two pins 44.

Referring to fig. 10, 11 and 12, the first through groove 31 and the second through groove 31 ' are disposed opposite to each other in a vertical direction, the first cavity 32 and the second cavity 32 ' are disposed opposite to each other in a vertical direction, the first bottom surface 320 and the second bottom surface 320 ' are flush with each other in a vertical direction, the first differential signal terminal S1 and the second differential signal terminal S2 are disposed opposite to each other in a vertical direction, and the first low-speed terminal D1 and the second low-speed terminal D2 are disposed opposite to each other in a vertical direction. The first through groove 31 and the second through groove 31' which are opposite to each other in the vertical direction are covered by the base portion 40 and the second protrusion 42 in the vertical direction, which is advantageous for reducing crosstalk between the first differential signal terminal S1 and the second differential signal terminal S2.

Referring to fig. 1, 2 and 9, the first groove 46 is located between the first cavity 32 and the second cavity 32 ', and the first groove bottom 460 is flush with the first bottom surface 320 and the second bottom surface 320' so that the space between the first section 201 behind the first differential signal terminal S1 and the first section 201 behind the second differential signal terminal S2 is filled with air, thereby reducing the dielectric constant, adjusting the impedance characteristics between the first differential signal terminal S1 and the second differential signal terminal S2, and the electrical connector 100 can transmit higher speed. Since the first bottom surface 320 corresponds to the turning section 203 at the rear end of the first differential signal terminal S1, and the second bottom surface 320' corresponds to the turning section 203 at the rear end of the second differential signal terminal S2, the first groove bottom 460 is located between the turning sections 203 in the upper and lower rows.

The second groove 47 corresponds to the second conduction part 22 of the USB2.0 terminals D in the upper and lower rows, and is used to increase the area of the terminal opposite to the USB2.0 terminals D in the upper and lower rows, so as to adjust the impedance of the terminal 2. Each abutting part 48 is arranged corresponding to the power terminal D and the reserved terminal V on the same side.

Referring to fig. 1, 2 and 3, the first terminal module M1 and the second terminal module M2 are mounted such that the shielding plates 4 are inserted into the receiving cavity 17 from the rear to the front, and the first insulating block 3A and the second insulating block 3B are fixed in the receiving cavity 17. The first guiding portion 21 extends forward into the mating cavity 10, the first guiding portions 21 correspond to the terminal slots 14, the first guiding portion 21 can perform elastic deformation movement in the terminal slots 14, and the first contact point 210 protrudes out of the terminal slot 14, is exposed in the mating cavity 10, and is in mechanical contact with the receptacle connector 200. The second guiding portion 22 extends backward out of the accommodating cavity 17, and the second contact point 220 is located in the accommodating cavity 17. The latch arm 43 is received in the channel 130, and the end of the latch arm 43 enters the receiving cavity 17 to form a clamping fixation with the receptacle connector 200 and form a ground circuit. The holding portion 45 is accommodated in the through hole 180, and the holding portion 45 extends in the left-right direction and protrudes from the side wall 18. The two pins 44 extend out of the rear end of the insulating body 1 and are located between the two side walls 18.

Two ground pads 5 are mounted on the upper plate 11 and the lower plate 12, respectively. When the grounding piece 5 is installed on the upper plate 11, the fastening groove 501 is sleeved around the upper convex portion 110 and the two are mutually fastened, the first extension arm 51 is downward accommodated in the through hole 15 of the upper plate 11, the arc-shaped portion of the first extension arm 51 is exposed in the butt joint cavity 10, the second extension arm 52 is accommodated in the non-through hole 16 of the upper plate 11, and the first elastic piece 520 and the second elastic piece 530 are bent and extended upwards.

Referring to fig. 1, 2 and 4, when the grounding strip 5 is mounted on the lower plate 12, the fastening groove 501 is sleeved around the lower protrusion 120 and the two are fastened to each other, the first extension arm 51 is accommodated in the through hole 15 of the lower plate 12 upward, the arc-shaped portion of the first extension arm 51 is exposed in the docking cavity 10, and the first elastic piece 520 and the second elastic piece 530 located on the lower plate 12 are bent and extended downward.

Referring to fig. 1, 2 and 4, a metal shell 6 is inserted from front to back to the outside of the insulating housing 1 and the two grounding plates 5. The first elastic sheet 520 and the second elastic sheet 530 are in mechanical contact with the upper and lower inner surfaces of the metal shell 6, the two clamping parts 45 are abutted against the inner surfaces of the left and right sides of the metal shell 6, and the clamping parts 45 have good rigidity and are abutted against the inner surface of the metal shell 6.

Referring to fig. 1, fig. 2 and fig. 4, the circuit board 300 is inserted forward into the receiving cavity 17, clamped between the second conduction parts 22 in the upper and lower rows and abutted against the abutting part 48. Two rows of first pads 301 are respectively arranged on the upper and lower surfaces of the circuit board 300, each first pad 301 is fixed to the second conduction part 22 by welding, and the second contact point 220 is located at the middle position of the first pad 301. The abutting portion 48 does not exceed the bending portion 221 backward, so that the circuit board 300 can have a sufficient insertion depth, and the second contact point 220 is prevented from being too far away from the rear edge of the first pad 301, thereby increasing the transmission path length of the electrical signal.

The two second pads 302 on the upper row are located behind two sides of the first pad 301 on the upper row, the two second pads 302 on the lower row are located behind two sides of the first pad 301 on the lower row, the two second pads 302 on the upper row are welded and fixed to the pin 441, and the two second pads 302 on the lower row are welded and fixed to the other pin 44.

In summary, the electrical connector of the present invention has the following advantages:

1. the first groove 46 is exposed at the rear end of the insulating block 3, the first differential signal terminal S1 and the second differential signal terminal S2 extend rearward out of the rear end of the insulating block 3, and the first groove 46 is located between the first differential signal terminal S1 and the second differential signal terminal S2, so that the facing area between the first differential signal terminal S1 and the second differential signal terminal S2 is increased, and the impedance characteristics between the first differential signal terminal S1 and the second differential signal terminal S2 are adjusted, so as to meet the impedance requirement of the electrical connector 100 at a better rate.

2. The first groove bottom 460 is located between the first cavity 32 and the second cavity 32 ', and the first groove bottom 460 is flush with the first bottom 320 and the second bottom 320' so that the space between the first section 201 behind the first differential signal terminal S1 and the first section 201 behind the second differential signal terminal S2 is filled with air, thereby reducing the dielectric constant, achieving the purpose of adjusting the impedance characteristics between the first differential signal terminal S1 and the second differential signal terminal S2, and the electrical connector 100 can transmit higher speed.

3. The second groove 47 corresponds to the second conduction part of the two rows of USB2.0 terminals D, so as to increase the area of the terminal opposite to the USB2.0 terminals D, thereby adjusting the impedance of the terminal 2.

4. The first limiting protrusion 342 and the second limiting protrusion 352 are first received in the left and right notches 420, and then the first positioning column 341 and the second positioning column 351 are received and clamped in the left and right positioning holes 401, the height of the first limiting protrusion 342 is greater than that of the first positioning column 341, and the height of the second limiting protrusion 352 is greater than that of the second positioning column 351, so that the first limiting protrusion 342 and the second limiting protrusion 352 can be first matched with the left and right notches 420 to initially position the shielding plate 4, and thus the first positioning column 341 and the second positioning column 351 can more easily enter the left and right positioning holes 401, which is convenient for installation and reduces installation errors.

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 technical changes that can be made by applying the present specification and the drawings are included in the scope of the present invention.

Claims

1. An electrical connector for electrically mating a first component in a forward direction and electrically mating a second component in a rearward direction, comprising:

an insulating block;

the upper row of terminals is arranged on the insulating block and is provided with at least one first signal terminal, the lower row of terminals is arranged on the insulating block and is provided with at least one second signal terminal, and the first signal terminal and the second signal terminal extend backwards out of the rear part of the insulating block;

the shielding piece is provided with at least one groove and is positioned behind the insulating block, the groove is positioned between the first signal terminal and the second signal terminal, at least part of the first signal terminal extends backwards out of the insulating block, at least part of the second signal terminal extends backwards out of the insulating block and is overlapped with at least part of the groove along an up-down direction, and a medium between the first signal terminal and the second signal terminal at the overlapped part of the first signal terminal and the second signal terminal is air.

2. The electrical connector of claim 1, wherein: the insulating block is provided with a first insulating block and a second insulating block, the upper row of terminals is arranged in the first insulating block, the lower row of terminals is arranged in the second insulating block, and the shielding sheet is clamped between the first insulating block and the second insulating block.

3. The electrical connector of claim 2, wherein: the upper row of terminals further includes a plurality of first signal terminals having a pair of first differential signal terminals, the lower row of terminals has a plurality of second signal terminals, the plurality of second signal terminals includes a pair of second differential signal terminals, at least one of the grooves has a first groove, the first differential signal terminals and the second differential signal terminals at least partially overlap in an up-down direction of the insulating body, the first groove is located between a pair of first differential signal terminals and a pair of the second differential signal terminals, and at least a portion of the first groove, at least a portion of a pair of the first differential signal terminals and at least a portion of a pair of the second differential signal terminals overlap in the up-down direction.

4. The electrical connector of claim 3, wherein: the first differential signal terminal is provided with a connecting part, the connecting part is provided with a first section and a second section which extends forwards from the first section, the first section extends backwards to form the first insulating block, the second section is fixed on the first insulating body, a turning section is connected with the first section and the second section, the distance between two adjacent first sections of the first differential signal terminal is greater than the distance between two adjacent second sections, and the turning section and the groove bottom of the first groove are arranged in an up-and-down corresponding mode.

5. The electrical connector of claim 4, wherein: the first differential signal terminals and the second differential signal terminals are arranged in a vertical symmetry manner, in a pair of the first differential signal terminals, the two turning sections extend away from each other from front to back, and the distance between the center lines of two adjacent first sections is greater than that between the center lines of two adjacent second sections.

6. The electrical connector of claim 3, wherein: the upper row of terminals has a plurality of first signal terminals, the plurality of first signal terminals includes a pair of first low-speed signal terminals, the lower row of terminals has a plurality of second signal terminals, the plurality of second signal terminals has a pair of second low-speed signal terminals, the first low-speed signal terminals and the second low-speed signal terminals at least partially overlap in the up-down direction of the insulating body, the shielding sheet further has two grooves, namely a first groove and a second groove, the second groove is located between the pair of first low-speed signal terminals and the pair of second low-speed signal terminals, and at least part of the second groove, at least part of the pair of first low-speed signal terminals, and at least part of the pair of second low-speed signal terminals overlap in the up-down direction.

7. The electrical connector of claim 3, wherein: the rear surface of the first insulating block is concavely provided with a first cavity, the first differential signal terminals extend backwards from the first cavity to form the first insulating block, the rear end of the second insulating block is concavely provided with a second cavity, the second differential signal terminals extend backwards from the second cavity to form the second insulating block, the first groove is positioned between the first cavity and the second cavity, and at least part of the first groove, at least part of the first cavity and at least part of the second cavity are overlapped in the vertical direction.

8. The electrical connector of claim 7, wherein: the bottom of the first concave cavity is flush with the bottom of the second concave cavity from top to bottom, and the bottom of the first groove is flush with the bottom of the first concave cavity from top to bottom.

9. The electrical connector of claim 8, wherein: the first differential signal terminals are exposed in the first cavity, and the second differential signal terminals are exposed in the second cavity.

10. The electrical connector of claim 6, wherein: an abutting part is arranged between the first groove and the second groove, and the abutting part extends backwards to form the insulating block and is used for abutting against the second element.

11. The electrical connector of claim 1, wherein: each terminal is provided with a connecting part which is fixed on the insulating block, the connecting part is horizontally arranged in the front-back direction, the back end of the connecting part is exposed at the back of the insulating block, and the groove corresponds to the back end of the connecting part of the first signal terminal and the back end of the connecting part of the second signal terminal.

12. The electrical connector of claim 1, wherein: the connector further comprises an insulating body used for accommodating the insulating block and the plurality of terminals, the rear end of the insulating body is concavely provided with an accommodating cavity used for accommodating the second element, and the groove is positioned in the accommodating cavity.

13. The electrical connector of claim 12, wherein: each terminal is provided with a connecting part which is fixed in the insulating block, a first conduction part extends forwards from the front end of the connecting part and is electrically contacted with the first element, the first conduction parts are divided into an upper row and a lower row and are arranged in the butt joint cavity, a second conduction part extends backwards from the rear end of the connecting part and is electrically connected with the second element, and the second conduction parts are divided into an upper row and a lower row and are arranged in the accommodating cavity.

14. The electrical connector of claim 12, wherein: the second element is a circuit board, the second element is inserted between the two rows of the guide connection parts and abutted to the shielding sheet, and the groove is located in front of the second element.