CN201910519U

CN201910519U - electrical connector

Info

Publication number: CN201910519U
Application number: CN2010202626426U
Authority: CN
Inventors: 蔡周贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-19
Filing date: 2010-07-19
Publication date: 2011-07-27
Anticipated expiration: 2020-07-19

Abstract

An electric connector, which can be inserted into a male head in two directions, comprises: a plastic seat; the tongue piece is convexly arranged at the front end of the plastic seat; the connecting groove is arranged at the front end of the plastic seat and covers the tongue piece; the first terminals are provided with an elastic arm, a fixing part and a pin, the fixing part is positioned in the plastic seat, the elastic arm extends towards the connecting groove and is provided with a convex first contact which protrudes out of one surface of the tongue piece, and the first contacts of the first terminals in the two rows respectively protrude out of the rear sections of the two surfaces of the tongue piece; and two rows of second contacts arranged on the front sections of the two sides of the tongue piece; the male connector is characterized in that the connecting groove can enable the male connector to be inserted and positioned in the space on the two sides of the tongue piece in a positive and negative two-way mode, the front sections of the two sides of the tongue piece are provided with lower concave surfaces and are arranged with the second connecting points, the rear sections of the two sides of the tongue piece are higher convex surfaces, and the concave surfaces and the convex surfaces are in a step difference, so that the side view section of the tongue piece is in a convex shape. The tongue piece is in a convex shape, so that the USB3.0 connector can be bidirectionally inserted and positioned.

Description

Electric connector

[technical field]

The utility model relates to a kind of electric connector, particularly about a kind of electric connector of two-sided electrical connection.

[background technology]

The most universal signal transmission standard of computer equipment is no more than universal serial bus (Universal Serial Bus now, be called for short USB), connector body and the transmission line made with this specification can make the peripheral equipment that is external in computer, as slide-mouse, keyboard etc., exist side by side for computer is measured immediately and promptly use.

At present USB has 2.0 and 3.0 two kind of specification, see also Fig. 1, be to be prior USB 2.0 males 90, it is provided with a plastic seat body 91 and a metal shell 92, this metal shell 92 coats this

plastic seat body

91,91 of this metal shell 92 and this plastic seat body form a socket space 93, this plastic seat body 91 only simultaneously is provided with row's contact 94 and is exposed to this socket space 93, the public fixed specification of USB association is 4.5mm for whole height i at present, with respect to the halfbody height j in this socket space 93 is 2.25mm, and socket spatial altitude k is 1.95mm.

Present USB2.0 socket is that the tongue piece in it simultaneously is provided with row's contact, and in the use, USB joint need direction of insertion correctly just can make both contacts to last electrical connection; Can be electrically connected when inserting in order to ensure the USB joint, both promptly then can't insert when the USB joint oppositely inserts having the fool proof design to connecting, and the user promptly can change another direction again and insert, in the right direction could the insertion has electrical connection after so can guaranteeing to insert.The user normally inserts at random, is 1/2 so insert the probability of not entering, so usually be to insert twice, causes the inconvenience in the use.

See also Fig. 2, be to be prior USB 2.0 sockets 80, it includes a plastic cement seat 81, a metal shell 83 and row's terminal 87, these plastic cement seat 81 front ends are integrally formed with and are horizontally extending tongue piece 82, this metal shell 83 is positioned these plastic cement seat 81 front ends and forms a link slot 84, this tongue piece 82 is positioned at link slot 84 section on the lower side, and this row terminal 87 is 4 and is fixed in this plastic cement seat 81 and extends forward and be arranged on this tongue piece 82 that it is provided with a contact 88 that protrudes near end.

This USB socket 80 is in order to cooperate male design fool proof, link slot height o is 5.12mm, tongue piece thickness p is 1.84mm, tongue piece height q is 2.56mm, tongue piece below height s is 0.72mm, and so this USB2.0 male 90 must be inserted by contact 93 down, makes socket space 93 and tongue piece 82 fits location, halfbody height j (2.25mm) is inserted in tongue piece height q (2.6mm), if USB male 90 oppositely then can't be inserted.In addition the insertion end 86 of the plane of orientation of this link slot 84 to the horizontal range t of first contact 88 of this first terminal be 3.5mm.

It mainly is to be that 1.95mm and this tongue piece thickness p are that the two packing of 1.84mm is located by this socket spatial altitude k that above-mentioned USB2.0 male 90 is inserted USB socket 80.

See also Fig. 2 A, be to be prior USB 3.0 sockets 85, its structure and relative dimensions are roughly identical with USB2.0 socket 80, its difference is that the long and leading portion of the tongue piece 82 of this USB3.0 socket 85 is provided with second contact 89 of 5 not springing of a row, in addition the insertion end 86 of the plane of orientation of this link slot 84 to the horizontal range t of first contact 88 of this first terminal be 4.07mm.

The structure of USB3.0 male and relative dimensions and USB2.0 socket 80 are roughly the same, and its difference is that many 5 of the rows of this USB3.0 protrude from the contact of socket space and meeting springing.

No matter prior USB socket 2.0, or 3.0 because the contact kenel of single face only, can't two-wayly peg graft in the use, yet, USB socket is if will be designed to two-way grafting, except need tongue piece two sides has the contact of terminal, must overcome the two-way insertion of USB male all can locate and can not make 4 terminals 87 cause short circuit, its metal shell when the USB male is inserted can cause short circuit infringement USB socket if touch the contact 88 of the terminal 87 of tongue piece one side, because above-mentioned potential problems so that dealer are difficult to commercialization in the technical bottleneck that this product experience of exploitation is difficult to overcome.

The concentrate on studies USB socket of two-way grafting of the utility model applicant proposes to overcome the tongue piece kenel of the product structure-improved and the USB3.0 socket of above-mentioned potential problems finally.

[utility model content]

Main purpose of the present utility model is to provide a kind of electric connector, and it is the type shape by tongue piece, and reaching can be for the two-way grafting of USB3.0 joint location.

Secondary objective of the present utility model is to provide a kind of electric connector, and it is and can not cause short circuit for USB joint two-way grafting location.

Secondary objective of the present utility model is to provide a kind of electric connector of anti-short circuit, and its tongue piece is designed to the taper of front-thin-rear-thick, can reach the effect of gaining in strength.

For reaching above-mentioned purpose, the utility model electric connector is can two-way grafting one male, and it includes: a plastic cement seat; One tongue piece, its protrusion are located at this plastic cement seat front end; One link slot is in it is located at this plastic cement seat front end and this tongue piece is coated on; Two ranked first terminal, this the first terminal is provided with an elastic arm, a fixed part and a pin, this fixed part is positioned in this plastic cement seat, this elastic arm extends and is provided with first contact that protrudes to this link slot and protrudes this tongue piece one side, and this two first contact that ranked first terminal protrudes this tongue piece two sides back segment respectively; Reach two and ranked second contact, it is located at this tongue piece two sides leading portion; It is characterized in that this link slot can make the positive and negative two-way insertion of this male location in the space on tongue piece two sides, and the leading portion on this tongue piece two sides is provided with lower concave surface row and establishes this second contact, the back segment on tongue piece two sides is higher convex surface, this concave surface and convex surface are a jump, make the side-looking section of this tongue piece be the type shape.

Accept above-mentionedly, the utility model provides a kind of electric connector, can two-way grafting one male, and described electric connector includes:

One plastic cement seat;

One tongue piece protrudes and is located at this plastic cement seat front end;

One link slot is in being located at this plastic cement seat front end and this tongue piece being coated on;

Two ranked first terminal, this the first terminal is provided with an elastic arm, a fixed part and a pin, this fixed part is positioned in this plastic cement seat, this elastic arm extends and is provided with first contact that protrudes to this link slot and protrudes this tongue piece one side, and this two first contact that ranked first terminal protrudes this tongue piece two sides back segment respectively; And

Two ranked second contact, are located at this tongue piece two sides leading portion;

It is characterized in that: this link slot can make the positive and negative two-way insertion of this male location in the space on tongue piece two sides, and the leading portion on this tongue piece two sides is provided with lower concave surface row and establishes this second contact, the back segment on tongue piece two sides is higher convex surface, this concave surface and convex surface are a jump, make the side-looking section of this tongue piece be the type shape.

Described electric connector is characterized in that: it is a USB3.0 socket, and wherein this male is the USB male.

Described electric connector is characterized in that: this two ranked second contact and is the contact of not springing.

Described electric connector is characterized in that: this link slot is formed by a metal shell, and this metal shell is positioned this plastic cement seat front end.

Described electric connector is characterized in that: this tongue piece and plastic cement seat are integrally formed.

Described electric connector is characterized in that: the thickness of this tongue piece is gradually thick and be a taper to the rear end by front end.

Described electric connector is characterized in that: this two ranked second contact and is formed at two and ranked second terminal, and this two ranked second terminal position in this plastic cement seat.

Described electric connector, it is characterized in that: two to ranked second contact be the two sides leading portion that is formed at a circuit board for this, this plastic cement seat is formed with a lug that protrudes forward, this lug is the back segment of this tongue piece and is provided with socket perforation, this circuit board by after penetrate the socket perforation of this lug, the leading portion of this circuit board protrudes from this lug the place ahead and forms the leading portion of this tongue piece.

Described electric connector is characterized in that: two ranked second terminal in conjunction with this during this plastic cement seat ejection formation, make this two ranked second terminal and imbed this plastic cement seat location.

Described electric connector, it is characterized in that: two to ranked second contact be the two sides leading portion that is formed at a circuit board for this, this plastic cement seat is formed with the back segment that a lug that protrudes forward forms this tongue piece, during this plastic cement seat ejection formation in conjunction with this circuit board, the back segment of this circuit board is imbedded in this lug, and the leading portion of this circuit board protrudes this lug the place ahead and forms the leading portion of this tongue piece.

Described electric connector, it is characterized in that: the insertion end of the plane of orientation of this link slot to the horizontal range of first contact of this first terminal greater than 4.15mm, the height of this link slot less than 6.3mm greater than 5.25mm, this tongue piece leading portion thickness is less than 1.55mm, when this male and link slot are maximum oblique angle and are inserted into first contact of this first terminal, the angle of this male and link slot less than the spacing of the metal shell of 25 degree and this male and this first contact greater than 0.05mm.

Described electric connector, it is characterized in that: the insertion end of the plane of orientation of this link slot to the horizontal range of first contact of this first terminal greater than 5.5mm, the height of this link slot less than 6mm greater than 5.25mm, this tongue piece leading portion thickness is less than 1.4mm, when this male and link slot are maximum oblique angle and are inserted into first contact of this first terminal, the angle of this male and link slot is less than 15 degree, and the spacing of the metal shell of this male and this first contact is greater than 0.2mm.

Described electric connector, it is characterized in that: the insertion end of the plane of orientation of this link slot to the horizontal range of first contact of this first terminal greater than 6mm, the height of this link slot less than 5.85mm greater than 5.25mm, this tongue piece leading portion thickness is less than 1.25mm, when this male and link slot are maximum oblique angle and are inserted into first contact of this first terminal, the angle of this male and link slot is less than 13.8 degree, and the spacing of the metal shell of this male and this first contact is greater than 0.25mm.

Described electric connector is characterized in that: the height of this USB male is that the height in 4.5mm and this socket space is 1.95mm, and the link slot height on this tongue piece two sides is 2.27mm to 2.45mm.

Described electric connector is characterized in that: the elastic arm leading portion reflexed of this first terminal and form first contact of this protrusion tongue piece one side, so when this male was inserted electrical connection, the elastic arm of this first terminal became forward springing comparatively smooth and easy.

Above-mentioned and other purpose of the present utility model, advantage and characteristic by in the detailed description of following preferred embodiment and with reference to graphic when can be clearer.

[description of drawings]

Fig. 1 is the front sectional elevation of prior USB 2.0 males.

Fig. 2 is existing USB2.0 socket side pseudosection.

Fig. 2 A is existing USB3.0 socket side pseudosection.

Fig. 3 is the three-dimensional exploded view of the utility model first embodiment.

Fig. 4 is the side cutaway view of the utility model first embodiment.

Fig. 5 is the circuit board of the utility model first embodiment and the three-dimensional combination figure of plastic cement seat.

Fig. 6 is the user mode side cutaway view of the utility model first embodiment.

Fig. 7 is the user mode side cutaway view of the utility model first embodiment.

Fig. 8 is the user mode side cutaway view of the utility model first embodiment.

Fig. 9 is the user mode side cutaway view of the utility model second embodiment.

Figure 10 is the user mode side cutaway view of the utility model the 3rd embodiment.

Figure 11 is the side cutaway view of the utility model the 4th embodiment.

Figure 12 is the three-dimensional exploded view of the utility model the 5th embodiment.

Figure 13 is the three-dimensional exploded view of the utility model the 6th embodiment.

Figure 14 is the side cutaway view of the utility model the 6th embodiment.

Plastic cement seat 10 lower covers 17 lugs 18 sleeve joint holes 19

Tongue piece 20 open-works 23 weld pads 24 recesses 25

Concave surface 26 convex surfaces 27 circuit boards 210 second contacts 211 solder joints 212

Second contact, 211 circuit, 213 pins 216

Open-work 214 metal-backs 30 link slots 31 concave surfaces 32 insertion ends 35

Import inclined-plane 36 the first terminals, 40 elastic arms, 41 fixed parts, 42 pins 43

First contact, 44 guiding inclines 45

Second terminal, 50 second contacts, 54 pins 53

USB2.0 male 90 plastic seat body 91 metal shells 92 socket spaces 93

Contact 94 inner contacts 9 5USB3.0 males 99

Nose thickness a rear end thickness b link slot height c horizontal range d

Spacing e spatial altitude f

[embodiment]

Seeing also Fig. 3, Fig. 4, reach Fig. 5, is to be the utility model first embodiment, and it is to be a USB3.0 socket, and it can connect a USB3.0 male, and it includes: a plastic cement seat 10, a tongue piece 20, a metal-back 30 and two ranked first terminal 40, wherein:

The front end of this plastic cement seat 10 is integrally formed with the lug 18 that a forward direction protrudes, and is provided with a horizontal sleeve joint hole 19 in this lug 18, and plastic cement seat 10 belows cover a lower cover 17.

Please cooperate and consult Fig. 3, the back segment of this tongue piece 20 for integrated lug 18 leading portions of plastic cement seat be a circuit board 210, this lug 18 is thick than this circuit board 210, so the leading portion on these tongue piece 20 two sides is thin and lower concave surface 26, the back segment on this tongue piece two sides is thicker and higher convex surface 27, this concave surface 26 is a jump with convex surface 27, make the side-looking section of this tongue piece 20 be the type shape, the leading portion on these circuit board 210 two sides is spaced and is provided with 5 second contacts 211 and two sides back segment and is spaced and is provided with 5 solder joints 212, each second contact 211 is connected to a solder joint 212 by a circuit 213, each solder joint 212 welding one pin 216, this circuit board is provided with 4 open-works 214 in addition, this circuit board 210 by after to be assembled into this plastic cement seat 10 fixing, the sleeve joint hole 19 that these circuit board 210 leading portions pass this lug 18 protrudes these lug 18 front ends and forms this tongue piece 20 leading portions.

Form link slots 31 in this metal-back 30, in this metal-back 30 was located at these plastic cement seat 10 front ends and this tongue piece 20 is coated on, these link slot 31 inner segments were provided with concave surface 32, and insertion end 35 front ends of the plane of orientation of this link slot 31 are provided with and import inclined-plane 36.

This two ranked first terminal 40 and respectively does for oneself 4, this the first terminal 40 is provided with an elastic arm 41, a fixed part 42 and a pin 43, this fixed part 42 is positioned in this plastic cement seat 10, and this elastic arm 41 extends and be provided with the convex surface 27 of first contact, 44 these tongue pieces 20 of protrusion that protrude to this link slot 31.

Present embodiment is characterised in that this link slot 31 can make the positive and negative two-way insertion of USB3.0 male location in the space on tongue piece 20 two sides, and when this USB3.0 male and link slot 31 were maximum oblique angle and are inserted into first contact 44 of this first terminal 40, the spacing of the metal shell of this USB3.0 male and this first contact was guaranteed the unlikely short circuit that causes greater than 0.05mm.

In order to reach above-mentioned two-way electrical connection and not short circuit demand, present embodiment adopts following design, the circuit board thickness of tongue piece leading portion is 0.6mm, the nose thickness a of the lug 18 of tongue piece back segment is about 1.0mm, the rear end thickness b of lug is about 1.6mm, link slot height c is about 5.8mm, the insertion end 35 of the plane of orientation of link slot 31 is about 6.6mm to the horizontal range d of first contact 44 of this first terminal 40, the spatial altitude f on tongue piece back segment two sides is about 2.3mm to 2,4mm, promptly the f at the front end of tongue piece back segment is (5.8mm-1mm)/2=2.4mm, and is littler toward tongue piece rear end convergent, because the f of tongue piece back segment is for still can be greater than 2.3mm, so be provided with concave surface 32.

No matter its metal shell 92 can never touch first contact 44 of the first terminal 40 during can the obvious USB3.0 joint oblique at any angle link slot of following operating instruction, see also Fig. 6, the dimensions of this USB3.0 joint 99 and aforesaid USB2.0 joint 90 are roughly the same, its difference only is that this USB3.0 joint more than 99 is provided with the inner contact 95 of 5 meeting springing of a row, when the contact 94 that deserves this USB3.0 male 99 is maximum oblique angle and is inserted into first contact 44 of this first terminal 40 up and with link slot 31, this moment, this USB3.0 male 99 was about 11.5 degree with the angle x of link slot 31, be inserted in for tongue piece 20 in the socket space 93 of this USB3.0 male 99, the spacing e of this metal shell 92 and first contact 44 above the tongue piece is still greater than 0.3mm, so can guarantee the unlikely short circuit that causes; See also Fig. 7, gradually change at ordinary times when the past again interpolation of this USB3.0 male 99, this moment, this spacing e was then greater than 0.38mm, and this moment, this USB2.0 male 90 was about 6.5 degree with the angle x of link slot 31; See also Fig. 8, when this USB3.0 male 99 is inserted to the location again toward in, first contact 44 of the first terminal of the contact 94 of this USB3.0 male 99 below the tongue piece back segment contacts, second contact 211 of this inner contact 95 below the tongue piece leading portion contacts, this moment, this spacing e was then greater than 0.48mm, and the halfbody height 2.25mm of this USB3.0 male 99 can be locked and be positioned spatial altitude f (2.3mm to 2.4mm) below this tongue piece 20, though these tongue piece 20 rear ends are thicker, this spatial altitude f is diminished, yet link slot 31 back segments are provided with concave surface 32 and supply, and so this USB3.0 male 99 still can be inserted to the inner terminal location.

In like manner, the state that is inserted to the location up when the contact 94 of this USB3.0 male 99 also with, no longer describe in detail.

By above-mentioned explanation as can be known, when USB3.0 male 99 is inserted link slot 31 location, the metal shell 92 of this USB3.0 male 99 and first contact, 44 discontiguous important documents are that these tongue piece 20 back segment nose thickness and first contact 44 protrude the height of tongue piece 20 back segments, because the socket spatial altitude k of this USB3.0 male 90 is 1.95mm, and this first contact 44 will have the springing height of 0.3mm at least, so can not contact with this first contact 44 in order to ensure this metal shell 92, these tongue piece 20 back segment nose thickness can not be greater than 1.55mm.

Yet, the user do not insert because being straight and narrow level when inserting, angle is excessive then can to make the metal shell 92 of this USB3.0 male 99 touch this first contact 44 in insertion process if insert, the factor that influences the maximum oblique cutting angle of USB3.0 male 99 in design is that the insertion end 35 of plane of orientation of this link slot height c and link slot 31 is to the horizontal range d of first contact 44 of this first terminal 40, promptly this this link slot height c heal the maximum oblique angles that the bigger then USB3.0 male 99 of little and this horizontal range d inserts can be littler, so spacing e can be healed greatly, and the utility model is promptly by strengthening this horizontal range d to guarantee that safe spacing e is arranged.

The utility model proposes a brand-new structure kenel to the horizontal range d suitable size of design of first contact 44 of this first terminal 40 and can and can not cause short circuit for USB3.0 joint two-way grafting location in the insertion end 35 of the plane of orientation of tongue piece thickness, link slot height c and link slot 31, be the type shape by this tongue piece 20 in addition, reaching can be for the two-way grafting of USB3.0 joint location.

In addition, present embodiment is because tongue piece is existing for thin, and the lug of these tongue piece 20 back segments is designed to the taper of front-thin-rear-thick in order to gain in strength.

See also Fig. 9, be the utility model second embodiment, it is roughly identical with first embodiment, its difference is that the insertion end of plane of orientation of link slot 31 of present embodiment is to the short 3.6mm that is about of the horizontal range of first contact 44 of this first terminal 40, when this USB3.0 male 99 and link slot 31 are maximum oblique angle and are inserted into first contact 44 of this first terminal 40, this moment, this USB3.0 male 99 was about 24 degree with the angle x of link slot 31, the spacing e of this metal shell 92 and first contact 44 above the tongue piece is still greater than 0.05mm, still survey reluctantly with and unlikelyly cause short circuit.

See also Figure 10, be the utility model the 3rd embodiment, it is roughly identical with first embodiment, its difference is that the tongue piece back segment nose thickness of present embodiment adds and is approximately 1.3mm and link slot height c and also adds and be approximately 6.2mm, when this USB3.0 male 99 and link slot 31 are maximum oblique angle and are inserted into first contact 44 of this first terminal 40, this moment, this USB3.0 male 99 was about 16 degree with the angle x of link slot 31, the spacing e of this metal shell 92 and first contact 44 above the tongue piece is still greater than 0.05mm, still survey reluctantly with and unlikelyly cause short circuit.

See also Figure 11, be the utility model the 4th embodiment, it is roughly identical with first embodiment, its difference be present embodiment the first terminal 40 elastic arm 41 leading portion reflexeds and form first contact 44 that protrudes tongue piece 20 one sides, so when this USB2.0 male was inserted electrical connection, 41 one-tenth forward springing was comparatively smooth and easy for the elastic arm of this first terminal 40.

Seeing also Figure 12, is the utility model the 5th embodiment, and it is roughly identical with first embodiment, and its difference is that the plastic cement seat 10 of present embodiment imbeds this circuit board 210 and together penetrate the location when ejection formation.

See also Figure 13 and Figure 14, be the utility model the 6th embodiment, it is roughly identical with first embodiment, its difference is to be provided with the narrower guiding incline of plate face 45 before first contact 44 of elastic arm 41 of the first terminal 40 of present embodiment, this two ranked first terminal 40 elastic arm 41 guiding incline about 45 stagger and all have precompressed and press on this tongue piece 20, so the elasticity of this first terminal 40 of design is preferable, and two guiding inclines about 45 that ranked first terminal 40 stagger and bigger springing space can be arranged, yet the still same moved further of first contact 44 of shortcoming this first terminal 40 when inserting when the USB3.0 male that the oblique angle is excessive to make that tongue piece is stressed to bend is so make this metal shell 92 be easy to contact this tongue piece first contact 44 simultaneously.

The plastic cement seat 10 of present embodiment is imbedded two and be ranked second terminal 50 and together penetrate the location when ejection formation in addition, second contact 54 and a pin 53 that this second terminal 50 is provided with a not springing stretch out outside the plastic cement seat 10, this tongue piece 20 and plastic cement seat 10 are one-body molded and be taper, be that nose thickness is thin and rear end thickness is thicker, these tongue piece 20 leading portions are provided with thin and lower concave surface 26 and back segment is provided with thicker and higher convex surface 27, the concave surface 26 of this tongue piece two sides leading portion is a jump with the convex surface 27 of back segment, make the side-looking section of this tongue piece 20 be the type shape, this two second contact that ranked second terminal 50 is arranged in this tongue piece two concave surface 26 of section in front respectively, and this two first contact 44 that ranked first terminal 40 is arranged the convex surface 27 that protrudes from two back segments of this tongue piece respectively.

Present embodiment is because tongue piece is existing for thin, and this tongue piece 20 is designed to the taper of front-thin-rear-thick in order to gain in strength.

The specific embodiment that is proposed in the detailed description of preferred embodiment is only in order to be easy to illustrate technology contents of the present utility model, and be not with the utility model narrow sense be limited to this embodiment, in the situation that does not exceed spirit of the present utility model and claim, can make many variations and implement.

Claims

1. An electrical connector capable of bidirectionally inserting a male head, said electrical connector comprising:

a plastic seat;

a tongue protruding from the front end of the plastic seat;

A connecting groove is arranged at the front end of the plastic seat and wraps the tongue piece inside;

Two rows of first terminals, the first terminal is provided with an elastic arm, a fixing part and a pin, the fixing part is positioned in the plastic seat, the elastic arm extends toward the connecting groove and is provided with a protruding first contact point Protruding from one side of the tongue, the first contacts of the two rows of first terminals respectively protrude from the rear sections of both sides of the tongue; and the two rows of second contacts are located on the front sections of both sides of the tongue;

It is characterized in that: the space between the connecting groove and the two sides of the tongue can make the positive and negative two-way insertion and positioning of the male head, and the front section of the two sides of the tongue is provided with a lower concave surface to arrange the second contact point, and the rear section of the two sides of the tongue It is a relatively high convex surface, and the concave surface and the convex surface form a step difference, so that the side view section of the tongue is in a convex shape.

2. The electrical connector as claimed in claim 1, wherein it is a USB3.0 socket, wherein the male head is a USB male head.

3. The electrical connector as claimed in claim 1, wherein the two rows of second contacts are non-spring contacts.

4. The electrical connector as claimed in claim 1, wherein the connecting groove is formed by a metal shell, and the metal shell is positioned at the front end of the plastic seat.

5. The electrical connector as claimed in claim 1, wherein the tongue is integrally formed with the plastic seat.

6 . The electrical connector as claimed in claim 5 , wherein the thickness of the tongue is tapered gradually from the front end to the rear end. 7 .

7. The electrical connector as claimed in claim 1, wherein the two rows of second contacts are formed on two rows of second terminals, and the two rows of second terminals are positioned in the plastic seat.

8. The electrical connector as claimed in claim 1, wherein the two rows of second contacts are formed on both front sections of a circuit board, and the plastic seat is integrally formed with a protruding piece protruding forward, the lug It is the rear section of the tongue and is provided with a sleeve through hole, and the circuit board is inserted into the sleeve through hole of the protruding piece from behind, and the front section of the circuit board protrudes from the front of the protruding piece to form the front section of the tongue.

9. The electrical connector as claimed in claim 7, wherein the plastic seat is combined with the two rows of second terminals during injection molding, so that the two rows of second terminals are embedded in the plastic seat for positioning. the

10. The electrical connector according to claim 1, wherein the two rows of second contacts are formed on both front sections of a circuit board, and the plastic seat is integrally formed with a forward protruding tab forming the tongue The rear section of the plastic seat is combined with the circuit board during injection molding, so that the rear section of the circuit board is embedded in the protruding piece, and the front section of the circuit board protrudes from the front of the protruding piece to form the front section of the tongue.

11. The electrical connector according to claim 1, wherein the horizontal distance from the insertion end of the positioning plane of the connecting groove to the first contact point of the first terminal is greater than 4.15mm, and the height of the connecting groove is less than 6.3mm greater than 5.25mm, the thickness of the front section of the tongue is less than 1.55mm, and when the male head and the connecting groove are inserted into the first contact of the first terminal at the largest oblique angle, the angle between the male head and the connecting groove is less than 25 degrees and the male The distance between the metal shell of the head and the first contact is greater than 0.05mm.

12. The electrical connector according to claim 1, wherein the horizontal distance from the insertion end of the positioning plane of the connection groove to the first contact point of the first terminal is greater than 5.5 mm, and the height of the connection groove is less than 6 mm and greater than 5.25mm, the thickness of the front section of the tongue is less than 1.4mm. The distance between the metal shell and the first contact is greater than 0.2mm.

13. The electrical connector according to claim 1, wherein the horizontal distance from the insertion end of the positioning plane of the connection groove to the first contact point of the first terminal is greater than 6mm, and the height of the connection groove is less than 5.85mm and greater than 5.25mm, the thickness of the front part of the tongue is less than 1.25mm. The distance between the metal shell and the first contact is greater than 0.25mm.

14. The electrical connector according to claim 1, wherein the height of the USB male head is 4.5 mm and the height of the socket space is 1.95 mm, and the height of the connecting grooves on both sides of the tongue is 2.27 mm to 2.45 mm. mm.

15. The electrical connector as claimed in claim 1, wherein the front section of the elastic arm of the first terminal is folded back to form the first contact on one side of the protruding tongue. the