CN205282752U - electrical connector - Google Patents

Abstract

The utility model relates to an electric connector, it includes insulator, a plurality of first terminals, a plurality of second terminals, an insulating hyoplastron and metal casing, insulator is spaced apart with the insulating hyoplastron, first terminal has first contact site, elasticity portion, first fixed part and first weld part, the contact site arranges in the upper surface of insulating hyoplastron, the second terminal has the second contact site, the second contact site arranges the lower surface of insulating hyoplastron, metal casing is equipped with a spliced eye, the insulating hyoplastron separates the spliced eye into last spliced eye and lower spliced eye, electric connector still includes a plurality of additional terminals that are fixed in on insulator, additional terminal includes contact arm, second fixed part and second weld part, the contact arm exposes in spliced eye and lower spliced eye, the contact arm is located insulating hyoplastron rear, spaced apart.

Description

electrical connector

technical field

The utility model relates to an electric connector, in particular to an electric connector with forward and reverse insertion functions.

Background technique

Electrical connectors are widely used in various electronic devices. For the convenience of consumers, related manufacturers have developed electrical connectors with positive and negative plug-in functions, such as a USB plug connector disclosed in China Utility Model Announcement No. 203839547 , the USB plug connector includes an insulating body, a plurality of conductive terminals, an insulating block, a circuit board and a metal shell, the circuit board has gold fingers located on the lower surface, and the front ends of the conductive terminals are welded on the upper surface of the circuit board, so that the conductive terminals and The gold fingers are electrically connected one by one, and the insulating block is formed on the circuit board to form a tongue plate together. The gold fingers are exposed on the lower surface of the tongue plate, and the conductive terminals are exposed on the upper surface of the tongue plate. When the USB plug connector is forwardly inserted into the USB socket connector, the conductive terminals contact the socket terminals in the USB socket connector to form signal transmission. When the USB plug connector is reversely inserted into the USB socket connector, the golden finger contacts the socket terminals in the USB socket connector to form signal transmission.

Since the USB plug connector only has four gold fingers and four conductive terminals, it can only transmit USB2.0 signals, and the transmission rate is low, which is difficult to meet the needs of consumers for high-speed and large data transmission.

Therefore, it is necessary to design a new electrical connector to solve the above technical problems.

Utility model content

The purpose of the utility model is to provide an electrical connector with improved transmission rate.

In order to achieve the aforementioned purpose, the utility model adopts the following technical solutions: an electrical connector, which includes an insulating body, a plurality of first terminals, a plurality of second terminals electrically connected to the first terminals, an insulating tongue plate and a package A metal shell covering the insulating body and the insulating tongue plate, the insulating body and the insulating tongue plate are spaced apart front and rear, the arrangement order of the first terminal and the second terminal along the left and right directions is opposite, and the first terminal has a first contact portion , an elastic part, a first fixing part and a first welding part, the first contact part is arranged on the upper surface of the insulating tongue, the elastic part connects the first contact part and the first fixing part, and the first fixing part The part is fixed on the insulating body, the second terminal has a second contact part, and the second contact part is arranged on the lower surface of the insulating tongue, and the metal shell is provided with an insertion hole, and the insulating tongue is accommodated in the The insertion hole, the insulating tongue plate divides the insertion hole into an upper insertion hole and a lower insertion hole, and the insulating tongue plate can swing up and down depending on the elasticity of the elastic part. It is characterized in that: the electrical connector also includes Several additional terminals fixed on the insulating body, the additional terminals include a contact arm, a second fixing portion and a second welding portion, the second fixing portion connects the contact arm and the second welding portion, and the contact arm is exposed on the upper The insertion hole and the lower insertion hole, the contact arm is located behind the first and second contact parts and is spaced apart from the insulating tongue plate.

As a further improvement of the utility model, the contact arm is in the shape of a vertical sheet.

As a further improvement of the utility model, the contact arm is in the shape of a tuning fork, which includes an upper contact arm and a lower contact arm spaced up and down. There is an opening between the upper contact arm and the lower contact arm, and the upper contact arm is exposed. In the upper insertion hole, the lower contact arm is exposed in the lower insertion hole.

As a further improvement of the utility model, the front end of the upper contact arm has an arc-shaped contact piece protruding upward from the upper surface of the insulating tongue, and the front end of the lower contact arm has an arc-shaped contact piece that protrudes downward from the lower surface of the insulating tongue. Contact sheet.

As a further improvement of the present utility model, the elastic part and the contact arm are alternately arranged in a row.

As a further improvement of the present utility model, the electrical connector includes a built-in circuit board inserted into the insulating tongue plate, the upper surface of the circuit board has a row of first gold fingers, and the lower surface has a row of second gold fingers , the first contact part is welded to the first gold finger one by one, and the second contact part is welded to the second gold finger one by one.

As a further improvement of the present invention, a portion of the elastic portion of the first terminal is bent with an upwardly protruding arc, and another portion of the elastic portion of the first terminal is bent with a downwardly protruding arc.

As a further improvement of the present utility model, the first and second terminals conform to the USB2.0 transmission protocol respectively, and the combination of the first terminal and the additional terminal conforms to the USB3.0 transmission protocol.

As a further improvement of the present utility model, the insulating tongue has a plurality of spaced protrusions protruding backwards and spaced left and right, and the spaced protrusions are interposed between contact arms of two adjacent additional terminals.

As a further improvement of the present utility model, the electrical connector further includes a transfer circuit board and a cable, and the cable is electrically connected to the first terminal and the additional terminal through the transfer circuit board, and the first , The second welding part is respectively welded on the adapter circuit board, the additional terminals include two pairs of differential signal terminals and a detection terminal located between the two pairs of differential signal terminals, and the adapter circuit board is provided with An IC controller prompts the two pairs of differential signal terminals to exchange signal transmission directions, and the contact arm of the detection terminal is exposed to one of the upper insertion hole and the lower insertion hole.

As a further improvement of the utility model, the contact arm of the additional terminal has a "T" shape structure when viewed from the side, and the front end of each contact arm has an arc-shaped contact piece protruding upward and an arc-shaped contact protruding downward. piece.

As a further improvement of the present utility model, the electrical connector also includes a transfer circuit board, the first and second welding parts are respectively welded to the upper and lower surfaces of the transfer circuit board, and the metal shell includes a top wall , the bottom wall and the left and right side walls connecting the top wall and the bottom wall, wherein one side wall has a first upright piece extending backward, and the other side wall has a second upright piece extending backward, and the first upright piece Opposite the second upright piece left and right, the metal shell is also provided with a first horizontal piece extending vertically inwardly from the top of the first vertical piece and a first horizontal piece extending vertically inwardly from the bottom end of the second upright piece The second horizontal piece, the first and second upright pieces are attached to the left and right sides of the adapter circuit board, the first horizontal piece is aligned with the first welding part left and right, the first horizontal piece is attached to the upper surface of the adapter circuit board, and the second The second horizontal piece is aligned left and right with the second welding portion, and the second horizontal piece is attached to the lower surface of the transfer circuit board.

The electrical connector of the utility model increases the signal transmission channel by adding additional terminals, and the additional terminals are used to transmit high-frequency signals to improve the transmission rate of the electrical connector, which is beneficial to meet the needs of consumers for high-speed and large data transmission. .

Description of drawings

FIG. 1 is a three-dimensional schematic diagram of the electrical connector of the present invention.

Fig. 2 is a cross-sectional view along B-B direction of Fig. 1 .

FIG. 3 is a three-dimensional schematic view of the electrical connector of the present invention, without showing the metal shell.

FIG. 4 is a three-dimensional exploded view of the electrical connector of the present invention.

FIG. 5 is a three-dimensional exploded view of the electrical connector of the present invention from another angle.

FIG. 6 is a three-dimensional schematic diagram of the first terminal and the additional terminal of the electrical connector of the present invention.

7 is a three-dimensional schematic diagram of an electrical connector according to another embodiment of the present invention, showing that the switching circuit board is separated from other components.

8 is a three-dimensional schematic diagram of an electrical connector according to another embodiment of the present invention, without showing the metal shell and the switching circuit board.

FIG. 9 is an exploded perspective view of FIG. 8 .

detailed description

Please refer to FIG. 1 to FIG. 6 , the electrical connector 100 of the present invention is a USB3.0 plug connector, and in other embodiments, the electrical connector 100 of the present invention is a USB3.0 socket connector. The electrical connector 100 includes an insulating body 10, a plurality of first terminals 20, a plurality of second terminals 30, a built-in circuit board 40, an insulating tongue plate 50, a number of additional terminals 60, and a cover covering the insulating body 10 and the insulating tongue plate 20. A metal shell 70 , the first terminals 20 are electrically connected to the second terminals 30 through the built-in circuit board 40 .

The insulating body 10 includes a base 11, a pair of extensions 12 protruding forward from the left and right ends of the base 11, and a support 13 protruding backward from the bottom of the base 11. The pair of extensions 12 are spaced apart from each other. A receiving space 14 is formed therebetween.

The first terminals 20 are four, including a power terminal, a ground terminal, and a pair of differential signal terminals located between the power terminal and the ground terminal, conforming to the USB2.0 transmission protocol. Each first terminal 20 includes a first contact portion 21, an elastic portion 22, a first fixing portion 23 and a first welding portion 24, the first contact portion 21 is located at the front end, the first welding portion 24 is located at the rear end, and the elastic portion 22 has Elasticity, can elastically swing up and down, the elastic part 22 is connected between the first contact part 21 and the first fixed part 23, the first fixed part 23 is connected between the elastic part 22 and the first welding part 24, the first fixed part 23 Insert molding in the base 11 of the insulating body 10, the first welding part 24 is insert molding in the support part 13 and exposed on the upper surface of the support part 13, for welding together with the cable (not shown), the elastic part 22 is suspended in the air The base 11 protrudes forward from the receiving space 130 . In other embodiments, the first terminal 20 is assembled in the insulating housing 10 . The elastic portion 22 of a part of the first terminal 20 has an upwardly protruding arc portion 221, and the elastic portion 22 of the other part of the first terminal 20 has a downwardly protruding arc portion 222, which improves the elasticity of the elastic portion 22 and ensures that the elastic portion 22 can quickly return to its original shape after being deformed, prolonging the service life of the electrical connector 100 .

The second terminals 30 are four, including a power terminal, a ground terminal and a pair of differential signal terminals located between the power terminal and the ground terminal, conforming to the USB2.0 transmission protocol. The arrangement sequence of the second terminals 30 and the first terminals 20 is opposite. The second terminal 30 is spaced apart from the insulating body 10 front and back, and the second terminal 30 is provided with a second contact portion 31 .

The circuit board 40 is arranged horizontally, with a row of first gold fingers 41 on its upper surface and a row of second gold fingers 42 on its lower surface. The first and second gold fingers 41 and 42 are electrically connected one by one. The first gold finger 41 is welded to the first contact portion 21 one by one, and the second gold finger 42 is electrically connected to the second contact portion 31 one by one, so that the first and second terminals 20 and 30 are electrically connected one by one.

The insulating tongue 50 is located in front of the insulating body 10, and is spaced from the front and back of the insulating body 10. The insulating tongue 50 is overmolded on the first and second contact portions 21, 31 and the circuit board 40, and the first contact portion 21 is exposed to the insulation. On the upper surface of the tongue plate 50 , the second contact portion 31 is exposed on the lower surface of the insulating tongue plate 50 .

There are five additional terminals 60 for transmitting high-frequency signals, which include two pairs of differential signal terminals 601 and a detection terminal 602 located between the differential signal terminals 601 at both ends, and one pair of differential signal terminals 601 is used for sending Differential signal, another differential signal terminal 601 is used to receive the differential signal. Combinations of the first terminal 20 and the second terminal 30 with the additional terminal 60 conform to the USB3.0 transmission protocol. Each additional terminal 60 includes a pair of contact arms 611, 612, a second fixing portion 63 and a second welding portion 64, the contact arms 611, 612 are located at the front end of the additional terminal 60, the second welding portion 64 is located at the rear end, and the second The fixing portion 63 connects the contact arms 611 , 612 and the second welding portion 64 . The pair of contact arms 611, 612 are vertical sheets, which include an upper contact arm 611 and a lower contact arm 612 spaced up and down from the upper contact arm 611. The upper contact arm 611 and the lower contact arm 612 are vertically symmetrical, and There is an opening 613 between them, so that the upper contact arm 611 and the lower contact arm 612 can elastically bias toward each other. The front end of the upper contact arm 611 has an upwardly protruding arc-shaped contact piece 614 , and the front end of the lower contact arm 612 has a downwardly protruding arc-shaped contact piece 614 .

The second fixing portion 63 is inserted into the base 11 of the insulating body 10 . The contact arms 611 , 612 protrude forward from the base 11 , are located in the receiving space 13 , and are alternately arranged with the elastic portion 22 of the first terminal 20 left and right. The contact arms 611, 612 are also located behind the insulating tongue 50 and are spaced apart from the insulating tongue 50 to avoid interference between the additional terminal 50 and the insulating tongue 50. The upper contact arm 611 protrudes upwards from the first contact portion 21 and is staggered forward and backward. ; The lower contact arm 612 protrudes downward from the second contact portion 31 and is staggered forward and backward. The second welding part 64 is inserted into the supporting part 13 and exposed on the upper surface of the supporting part 13, and is used for welding together with a cable (not shown) or an adapter circuit board. The first and second welding parts 24, 64 in a row.

The metal casing 70 includes a top wall 71, a bottom wall 72 and two side walls 73 connecting the top wall 71 and the bottom wall 72, an insertion hole 75 is formed between the top wall 71, the bottom wall 72 and the two side walls 73, and the insulating tongue The plate 50 is located in the middle of the insertion hole 75 and divides the insertion hole 75 into an upper insertion hole 751 and a lower insertion hole 752. The upper insertion hole 751 and the lower insertion hole 752 have the same thickness and width and are flush up and down. The top wall 71 and the bottom wall 72 are respectively separated from the insulating tongue 50 up and down, and the two side walls 73 and the insulating tongue 50 are close to each other to allow a gap. The two sides of the insulating tongue 50 are provided with arc-shaped ribs 51 to reduce the insulating tongue. The friction between the plate 50 and the side wall 73 of the metal shell 70, the first contact part 21 and the upper contact arm 611 are exposed upward to the upper socket hole 751, and the second contact part 31 and the lower contact arm 612 are exposed downward to the lower socket Hole 752.

When the electrical connector 100 of the present utility model is docked in the forward direction, the docking connector enters the upper insertion hole 751, and the insulating tongue plate 50 relies on the elasticity of the elastic part 22 of the first terminal 20 to shift downwards, and the conductive terminal of the docking connector Contact with the first contact portion 21 and the upper contact arm 611; when the electrical connector 100 is reversely docked, the butt connector enters the lower insertion hole 752, and the insulating tongue plate 50 relies on the elasticity of the elastic portion 22 of the first terminal 20 to move upward. Offset, the conductive terminal of the mating connector contacts the second contact portion 31 and the lower contact arm 612 . After the mating connector exits the electrical connector 100, the first terminal 20 and the insulating tongue plate 50 return to their original shape.

The electrical connector 100 of the utility model increases the additional terminal 60, and the additional terminal 60 is used to transmit high-frequency signals, increases the signal transmission channel, and improves the transmission rate of the electrical connector 100, which is conducive to satisfying consumers' requirements for high-speed, large data Transmission usage requirements.

Please refer to FIG. 7 to FIG. 9 , the electrical connector 200 in another embodiment of the present invention is provided with an additional circuit board 80 and a cable (not shown), the circuit board 80 is located in the insulating body 10 At the rear end, the first terminal 20 and the additional terminal 60 are electrically connected to the cable through the transfer circuit board 80 .

A row of conductive strips 84 welded to the first terminals 20 and the additional terminals 60 are respectively arranged on the upper and lower surfaces of the adapter circuit board 80 . An IC controller 82 is also arranged on the switching circuit board 80 .

The insulating tongue plate 50 has a plurality of spaced protrusions 51 protruding backwards and spaced apart left and right. The spaced protrusions 51 are interposed between the contact arms 611, 612 of two adjacent additional terminals 60, limiting the contact arms 611, 612 between Displacement in the left-right direction. The first welding portion 24 of the first terminal 20 and the second welding portion 64 of the additional terminal 60 also extend out of the insulating body 10 backwards, and are arranged in another row at intervals along the left and right direction, and the first welding portion 24 is located at the edge of the second welding portion 64 Above, the first welding portion 24 is welded on the upper surface of the adapter circuit board 80 , the second welding portion 64 is welded on the lower surface of the adapter circuit board 80 , and the cables are also welded on the upper surface or the lower surface of the adapter circuit board 80 , so as to be electrically connected with the first terminal 20 , the second terminal 30 and the additional terminal 60 .

The contact arm 615 of the differential signal terminal 601 is viewed from the side and has a "T"-shaped structure. The front end of each contact arm 615 has an arc-shaped contact piece 614 protruding upward and an arc-shaped contact piece 614 protruding downward. to make contact with a mating connector (not shown). The contact arm 615 of the detection terminal 602 only has an arc-shaped contact piece 614 protruding upward, and the lower surface of the contact arm 615 is higher than the lower surface of the insulating tongue 50 .

When the electrical connector 200 is docked with the docking connector in the forward direction, the contact pieces 614 of the two pairs of differential signal terminals 601 are respectively in contact with the docking connector, while the contact pieces 614 of the detection terminal 603 are disconnected from the docking connector, one of them The differential signal terminal 601 is used to send a differential signal, and the other differential signal terminal 601 is used to receive a differential signal.

When the electrical connector 200 is oppositely connected to the butt connector, the two pairs of differential signal terminals 601 and the contact strips 614 of the detection terminal 603 are respectively in contact with the butt connector, and the IC controller 82 is connected to the signal on the transfer circuit board 80. The connection is switched, and the signal transmission directions of the two pairs of differential signal terminals 601 are exchanged, so that the forward and reverse insertion function of the electrical connector 200 is realized.

One side wall 73 of the metal shell 70 has a first upright piece 731 extending backward, and the other side wall 73 has a second upright piece 732 extending backward, the first upright piece 731 is opposite to the second upright piece 732 left and right , the metal shell 70 is also provided with a first horizontal piece 733 bent vertically inwardly from the top of the first vertical piece 732 and a second horizontal piece 733 bent vertically inwardly from the bottom end of the second upright piece 732 Sheet 734. The first and second upright pieces 731, 732 are attached to the two sides of the adapter circuit board 80, the first horizontal piece 733 is aligned with the first welding part 24 left and right, and the first horizontal piece 733 is attached to the adapter circuit board 80 surface, the second horizontal piece 734 is aligned with the second welding portion 64 left and right, the second horizontal piece 734 is attached to the lower surface of the transfer circuit board 80, the first upright piece 731, the second upright piece 732, the first horizontal piece 733, The second horizontal piece 734 clamps and fixes the adapter circuit board 80 in the up-down and left-right directions. Although preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that, without departing from the scope and spirit of the present invention as disclosed by the appended claims, Various improvements, additions, and substitutions are possible.

Claims (12)

1. an electric connector, it includes insulating body, some the first terminals, some second terminals being electrically connected one by one with the first terminal, the metal shell of one insulation hyoplastron and coated insulation body and insulation hyoplastron, described insulating body is opened with insulation hyoplastron time interval, described the first terminal and the second terminal putting in order in left-right direction is contrary, described the first terminal has the first contact site, elastic, first fixed part and the first weld part, described first contact site is arranged in the upper surface of insulation hyoplastron, described elastic connects the first contact site and the first fixed part, described first fixed part is fixed on insulating body, described second terminal has the second contact site, the lower surface of described second contact site arrangement insulation hyoplastron, described metal shell is provided with a spliced eye, described insulation hyoplastron is contained in spliced eye, described insulation hyoplastron is divided into upper spliced eye and lower spliced eye spliced eye, described insulation hyoplastron can rely on the elasticity of elastic to swing up and down, it is characterized in that: described electric connector also includes the some additional terminal being fixed on insulating body, described additional terminal includes contact arm, second fixed part and the second weld part, described second fixed part connects contact arm and the second weld part, described contact arm is exposed to spliced eye and lower spliced eye, described contact arm is positioned at first, the rear of the second contact site, and it is spaced apart with insulation hyoplastron.

2. electric connector according to claim 1, it is characterised in that: described contact arm is vertical lamellar.

3. electric connector according to claim 1, it is characterized in that: described contact arm is tuning fork-like, it include separating between the upper and lower one on contact arm and contact arm once, between upper contact arm and lower contact arm, there is an opening, described upper contact arm is exposed to spliced eye, and described lower contact arm is exposed to lower spliced eye.

4. electric connector according to claim 3, it is characterised in that: described upper contact arm front end has protruding upward in the arc contact chip of insulation hyoplastron upper surface, and described lower contact arm front end has downwardly projecting in the arc contact chip of insulation hyoplastron lower surface.

5. electric connector according to claim 1, it is characterised in that: described elastic is staggered in a row with contact arm left and right.

6. electric connector according to claim 1, it is characterized in that: described electric connector includes the internal circuit board being insert molded in insulation hyoplastron, described circuit board upper surface has one and ranked first golden finger, lower surface has one and ranked second golden finger, described first contact site and the first golden finger weld one by one, and described second contact site and the second golden finger weld one by one.

7. electric connector according to claim 1, it is characterised in that: the elastic of a part of the first terminal is bent with curved portions protruding upward, and the elastic of another part the first terminal is bent with downwardly projecting curved portions.

8. the electric connector according to any one in claim 1-7, it is characterised in that: described first, second terminal corresponds with the combination of USB2.0 host-host protocol, described the first terminal and additional terminal and meets USB3.0 host-host protocol.

9. electric connector according to claim 1, it is characterised in that: described insulation hyoplastron has the some intervals protuberance protruding out backward and separating between left and right, and interval protuberance is between the contact arm of each adjacent two additional terminal.

10. electric connector according to claim 1, it is characterized in that: described electric connector also includes a switching circuit board and a cable, described cable by switching circuit board and the first terminal and additional terminal with electrically connect, described first, second weld part is welded on switching circuit board respectively, described additional terminal includes two pairs of difference signal terminal and the inspection terminal between these two pairs of difference signal terminal, described switching circuit board is provided with to promote an IC controller of these two pairs of difference signal terminal exchange signal transmission direction, the contact arm of described inspection terminal be exposed to spliced eye and lower spliced eye one of them.

11. electric connector according to claim 1, it is characterised in that: the contact arm of described additional terminal is laterally observed, " T " shape structure, and each contact arm front end has an arc contact chip protruding upward and a downwardly projecting arc contact chip.

12. electric connector according to claim 1, it is characterized in that: described electric connector also includes a switching circuit board, described first, second weld part is welded in the upper of switching circuit board respectively, lower surface, described metal shell includes roof, the left and right sides wall of diapire and connection roof and diapire, wherein a sidewall has one first vertical piece extended back, another sidewall has one second vertical piece extended back, about the first vertical piece and the second vertical piece relatively, metal shell is additionally provided with one first horizontal plate from the first vertical piece top perpendicularly inward lateral buckling extension and one second horizontal plate from the second perpendicularly inward lateral buckling extension in vertical piece bottom, first, second vertical piece abuts in the left and right side of switching circuit board, first horizontal plate aligns with about the first weld part, first horizontal plate abuts in switching circuit board upper surface, second horizontal plate aligns with about the second weld part, second horizontal plate abuts in switching circuit board lower surface.