TWM498406U - Electrical connector - Google Patents

Description

Electrical connector

This creation is about an electrical connector, especially an electrical connector that enhances the stability of the characteristic impedance.

In recent years, with the rapid development of technology, the use of multimedia and high-speed bandwidth has become more and more popular. The amount of data transmitted between most electronic devices continues to increase. How to transmit a large amount of electronic data in a short period of time is the trend of information technology development today. . In addition to increasing the path for transmitting electronic signals between electronic devices, the current general response is to increase the frequency of electronic signals transmitted between electronic devices. The connector is an electronic signal communication bridge between different electronic devices. As the transmission requirements increase, the connector gradually faces the challenge of high-frequency signal transmission.

Universal Serial Bus (USB) connector is one of the most widely used transmission interfaces in daily life. Due to the ease of use, small size and reasonable cost of the USB interface, it is used in different working fields. USB traces can be seen everywhere. Whether it is the family's core entertainment devices such as TVs, personal notebooks, smart phones, tablet devices or office work computers, printers, and even multimedia communication entertainment systems for cars, they often rely on USB for data. The task of transmission.

In order to enable USB to be applied to higher-speed signal transmission, and to reduce the inability to transmit due to USB insertion direction or wiring direction error, a new universal serial sink The flow type Type C came into being. The USB International Standards Association (USB-IF) has announced this standard specification called USB Type C interface. Due to the large increase in the amount of data transmitted, the corresponding electromagnetic radiation may be generated during use, which may interfere with other In view of the normal operation of electronic components, in the industry, the grounding method is generally used to reduce the generation of electromagnetic interference (EMI).

As shown in the first figure, it is a power designed using the USB Type C standard specification. The connector 1 includes a rubber core 11, a housing 12, an upper row of terminals 13, a lower row of terminals 14, and a grounding strip 15, wherein the grounding strip 15 is located between the upper row of terminals 13 and the lower row of terminals 14, the electrical connector 1 mainly uses the grounding piece 15 to prevent mutual interference between the upper row of terminals 13 and the lower row of terminals 14, thereby protecting and maintaining the high frequency performance of the electrical connector 1. The relative position and spacing between the upper pin 131 of the upper row of terminals 13 and the lower pins 141 of the lower row of terminals 14 must be designed in accordance with the layout of the board ends, due to the design of the circuit layout (LAYOUT) of the board ends, The rear end pitch P2 between the rear end of the row of terminals 13 and the lower row of terminals 14 and the grounding lug 15 is generally designed to be significantly larger than the front end pitch P1 between the front end and the grounding lug 15 so as to match the upper end of the terminal 13 The relative position and spacing between the pin 131 and the lower pin 141 of the lower row of terminals 14 are. However, such a design is liable to cause a change in the characteristic impedance of the front and rear ends of the electrical connector 1 to cause instability, which affects the effect of high-frequency signal transmission, and thus cannot meet the requirements of customer signal transmission.

The lower row of terminals on the conventional connector is limited by the layout design of the board end circuit, so that the distance between the rear end of the upper and lower row terminals and the grounding strip is greater than the spacing between the front end and the grounding strip, so the front and rear ends of the upper and lower rows of terminals are grounded. The spacing between the sheets is not the same, resulting in a change in the characteristic impedance of the connector as a whole, resulting in instability, which is liable to cause a problem of poor transmission of high-frequency signals.

The present invention provides an electrical connector including an insulative body and a metal outer The housing, a shielding plate and a conductive terminal set, wherein the insulating body has a base and a tongue extending forward from the base, the tongue having a first surface and a second surface disposed opposite each other. The metal casing is wrapped around the outer side of the insulative housing, and the metal casing surrounds the tongue plate to form a mating space, and the docking space has a front side opening. The shielding plate is disposed on the tongue plate and located between the first surface and the second surface, the shielding plate is provided with a square annular structure extending to the base portion, and the square annular structure comprises a top side plate and a bottom side plate. A front side panel and a rear side panel, the front side panel and the rear side panel are disposed opposite to each other. The conductive terminal set is disposed on the tongue plate, wherein the conductive terminal set includes a plurality of first terminals and a plurality of second terminals, each of the first terminals has a first contact portion and a first connection portion connecting the first contact portions, first The contact portion is disposed on the first surface, the first connecting portion extends to the base portion, each second terminal has a second contact portion and a second connecting portion connecting the second contact portion, and the second contact portion is disposed on the second surface The second connecting portion extends to the base portion, the square annular structure is located between the first connecting portion and the second connecting portion, the front side plate is adjacent to the second connecting portion, and the rear side plate is adjacent to the first connecting portion.

The electrical connector provided by the present invention is provided with a rear end of the shielding plate. a square annular structure, the square annular structure is located between the first connecting portion and the second connecting portion, the front side plate is adjacent to the second connecting portion, and the rear side plate is adjacent to the first connecting portion, so that the front side plate and the second connecting portion The distance between the shielding plate and the first connecting portion and the second connecting portion is approximately equal to the square ring structure and the first connecting portion and the distance between the rear side plate and the first connecting portion. The distance between the two connecting portions can control the variation of the characteristic impedance of the whole electrical connector to be small, so that it can have stable characteristic impedance performance when transmitting high-frequency signals, so that the conventional technology can easily solve the problem. The problem of poor transmission of high frequency signals.

1‧‧‧Electrical connector

11‧‧‧ Rubber core

12‧‧‧ Shell

13‧‧‧Upper terminal

131‧‧‧上上脚

14‧‧‧Lower terminal

141‧‧‧下脚

15‧‧‧ Grounding piece

2‧‧‧Electrical connector

3‧‧‧Insulation body

31‧‧‧ base

311‧‧‧ Reception trough

32‧‧‧ tongue plate

321‧‧‧ first surface

322‧‧‧ second surface

33‧‧‧Fixed blocks

34‧‧‧protection block

4‧‧‧Metal casing

41‧‧‧ docking space

42‧‧‧ front opening

43‧‧‧Weld Department

5‧‧‧Shielding board

50‧‧‧Parts Department

501‧‧‧The former section

502‧‧‧The last section

503‧‧‧ openings

51‧‧‧Square ring structure

511‧‧‧ top side panels

512‧‧‧ bottom side panel

513‧‧‧ front side panel

514‧‧‧ rear side panel

6‧‧‧Electrical terminal group

61‧‧‧First terminal

611‧‧‧First contact

612‧‧‧First connection

613‧‧‧first pin

62‧‧‧second terminal

621‧‧‧Second contact

622‧‧‧Second connection

623‧‧‧second pin

7‧‧‧Auxiliary housing

71‧‧‧welding feet

81‧‧‧Upper metal sheet

811‧‧‧Shrap

82‧‧‧Under metal sheet

821‧‧‧ Grounding Department

L‧‧‧ length

P‧‧‧ spacing

P1‧‧‧ front end spacing

P2‧‧‧Back end spacing

D1‧‧‧ distance

D2‧‧‧ distance

H1‧‧‧ distance

H2‧‧‧ distance

The first figure is a schematic cross-sectional view of a conventional electrical connector.

The second figure is a perspective view of the electrical connector of the present invention.

The third figure is an exploded schematic view of the electrical connector of the second figure.

The fourth figure is a schematic cross-sectional view of the electrical connector of the second figure.

The fifth figure is a schematic side view of the shielding plate and the conductive terminal group in the electrical connector of the second figure.

Referring to FIG. 2 to FIG. 5 , the present invention provides an electrical connector 2 including an insulative housing 3 , a metal housing 4 , a shielding plate 5 , and a conductive terminal set 6 . The device 2 is soldered to a circuit board (not shown).

The insulative housing 3 has a base portion 31 and a tongue plate 32 extending forwardly from the base portion 31. The tongue plate 32 has a first surface 321 and a second surface 322 disposed opposite each other. In the present embodiment, in order to facilitate the assembly and manufacture of the electrical connector 2, a receiving groove 311 is formed on the rear side of the base portion 31 of the insulative housing 3. The partial shielding plate 5 is previously disposed on a fixing block 33. Then, the fixing block 33 is assembled and fixed in the receiving groove 311 of the base portion 31, so as to facilitate the assembly and manufacture of the electrical connector 2. In addition, a protective block 34 can be assembled in the receiving slot 311 for covering and protecting the fixing block 33 and the conductive terminal set 6.

The metal outer casing 4 is wrapped around the outer side of the insulative housing 3, wherein the metal outer casing 4 surrounds the tongue 32 to form a substantially annular abutting space 41. The mating space 41 has a front side opening 42 for the docking. Connectors (not shown) are plugged into each other. In this embodiment, the metal shell 4 is provided with a soldering portion 43 on both sides thereof, in order to conform to the layout on the circuit board. Further, an auxiliary casing 7 may be additionally assembled on the metal casing 4, and the auxiliary casing 7 is provided with a welding leg 71 on both sides thereof, and the welding portion 43 of the original metal casing 4 is added, so that the circuit board can be matched. The layout design on the top.

In order to meet the grounding design requirements of the USB standard, the electrical connector 2 is added. The upper metal piece 81 and the lower metal piece 82 are respectively assembled on the upper side and the lower side of the base portion 31 of the insulative housing 3, wherein the upper metal piece 81 and the lower metal piece 82 are up and down. The metal shell 4 can cover the upper metal piece 81 and the lower metal piece 82, and the upper metal piece 81 is provided with the elastic piece 811 to be in contact with the metal outer casing 4 to form a grounding conduction. The lower metal piece 82 is provided with a grounding portion 821 which can be grounded to form a ground connection with the grounding layout on the circuit board.

The shielding plate 5 includes a substrate portion 50 extending horizontally and horizontally and is disposed on the substrate portion 50. A square annular structure 51 of the rear end, wherein the substrate portion 50 of the shielding plate 5 is disposed between the first surface 321 and the second surface 322 of the tongue plate 32, and the square annular structure 51 extends into the base portion 31. In the embodiment, in order to facilitate assembly and manufacture of the electrical connector 2, the substrate portion 50 can be separated into a front portion 501 and a rear portion 502, wherein the front portion 501 is firstly molded by using ( The insert molding is disposed between the first surface 321 and the second surface 322. The rear portion 502 extends to the fixing block 33 in the base portion 31, and the rear end portion 502 is connected to the rear end plate 511 of the square annular structure 51. And the rear section 502 and the square annular structure 51 are integrally formed.

In this embodiment, the rear section 502 and the square annular structure 51 are first set in the solid state. After the block 33 is assembled, the fixing block 33 is assembled into the receiving groove 311 of the base portion 31. At this time, the rear portion 502 is in contact with the front portion 501 to form electrical conduction. This process facilitates assembly and manufacture of the electrical connection. Device 2. In addition, a plurality of openings 503 are provided on the front portion 501 of the shielding plate 5, and the openings are opened. The port 503 is corresponding to the upper metal piece 81 and the lower metal piece 82, so that a better characteristic impedance effect can be obtained to meet the requirements of the customer signal transmission.

It is worth mentioning that in the present embodiment, the front portion 501 of the substrate portion 50 and the rear portion The segment portion 502 is split into two separate components, but is not limited thereto. Alternatively, the front portion 501 and the rear portion 502 of the substrate portion 50 may be integrally formed, but at this time, the electrical connector 2 is The assembly and manufacturing method is also changed in accordance with the structural design of the substrate portion 50. Similarly, a square annular structure 51 is provided at the rear end of the substrate portion 50. The substrate portion 50 and the square annular structure 51 are integrally formed by metal stamping. Formed structure.

In this embodiment, the square annular structure 51 includes a top side plate 511 and a bottom side. The front side plate 511 and the rear side plate 512 are disposed in parallel with each other in the up-and-down direction, and the front side plate 511 and the rear side plate 514 are arranged in parallel in front and rear, the top side plate 511, the bottom side plate 512, and the front plate 512, a front side plate 513, and a rear side plate 512. The side plate 513 and the rear side plate 514 are annular structures integrally formed by metal stamping, wherein the rear side plate 514 extends downward relative to the top side plate 511, and the bottom side plate 512 is coupled to the rear side plate 514 and extends forward toward the front side of the insulative body 3. The front end of the bottom side panel 512 is coupled to the front side panel 513, and the front side panel 513 extends upward relative to the bottom side panel 512 to form a substantially square annular structure.

The conductive terminal group 6 is disposed on the tongue plate 32, wherein the conductive terminal group 6 includes a plurality of a first terminal 61 is disposed on the first surface 321 and extends rearward to the base portion 31. The second terminals 62 are disposed on the second surface 322 and extend rearward to the base portion 31. Each of the first terminal 61 and the second terminal 62 are respectively disposed along two sides of the shielding plate 5 , and each of the first terminals 61 has a first contact portion 611 , a first pin 613 , and a first contact portion 611 . The first connecting portion 611 is disposed on the first surface 321 , and the first connecting portion 612 extends downwardly relative to the first contact portion 611 to the base portion 31 , the first pin 613 series The rear side of the insulative housing 3 extends rearward. Each of the second terminals 62 has a second contact portion 621 , a second pin 623 , and a second connecting portion 622 connecting the second contact portion 621 and the second pin 623 . The second contact portion 621 is disposed on the second surface 322, the second connecting portion 622 extends downward to the base portion 31 with respect to the second contact portion 621, and the second pin 623 extends forward in a direction toward the front side of the insulative housing 3.

In the present embodiment, the front portion 501 of the substrate portion 50 is located at the first contact portion 611. Between the second contact portion 621, the square annular structure 51 is located between the first connecting portion 612 and the second connecting portion 622, wherein the front side plate 513 is close to the second connecting portion 622, and the rear side plate 514 is close to the first connection Part 612. The second connecting portion 622 and the first connecting portion 612 are disposed in parallel in the front-rear direction and extend vertically downward. The distance D2 between the front side plate 513 and the second connecting portion 622 is substantially equal to the parallel opposite arrangement of the side plate 514 and The distance D1 between the first connecting portions 612, and the distance H1 between the first contact portion 611 and the substrate portion 50 is substantially equal to the distance D1 between the rear side plate 514 and the first connecting portion 612, and the second contact portion 621 and the substrate The distance H2 between the portions 50 is substantially equal to the distance D2 between the front side plate 513 and the second connecting portion 622.

It is worth mentioning that the above design can effectively control the square ring structure 51. The distance between the relative positions between the first terminal 61 and the second terminal 62 is such that the distance between the rear end of the first terminal 61 and the second terminal 62 and the square annular structure 51 is approximately equal to the front end and the shielding plate The spacing between the five, so that the characteristic impedance variation of the whole of the electrical connector 2 can be controlled to be small, so that it can have a stable characteristic impedance performance when performing high-frequency signal transmission, so that the high speed easily generated by the prior art can be solved. The problem of poor transmission of frequency signals.

It can be understood that, in this embodiment, in order to cooperate with the first terminal 61 and the The relative distance between the front and rear ends of the two terminals 62 is such that the length L of the bottom side plate 512 is greater than the distance D2 between the front side plate 513 and the second connecting portion 622. Similarly, the length L of the bottom side plate 512 is also large. A distance D1 between the rear side plate 514 and the first connecting portion 612 is separated. In addition, the length L of the bottom side plate 512 is greater than the distance between the first contact portion 611 and the second contact portion 621. Similarly, the distance between the first connecting portion 612 and the second connecting portion 622 is different. It is larger than the distance between the first contact portion 611 and the second contact portion 621, and this is a result of the influence of the design of the circuit layout (not shown) of the board end, in other words, the length L of the bottom side board 512 The design is usually related to the design of the circuit layout of the board end. Generally, if the pitch of the circuit layout is larger, the length L of the bottom side board 512 will also become larger.

The first pin 613 and the second pin 623 protrude from the insulating body 3, wherein A pitch P is formed between a pin 613 and the second pin 623. The pitch P is generally greater than the length L of the bottom side plate 512, but is smaller than the parallel connection between the first connecting portion 612 and the second connecting portion 622. distance. It is worth mentioning that the present invention is provided with a square annular structure 51 at the first connecting portion 612 and the second portion without changing the size P between the first pin 613 and the second pin 623. Between the connecting portions 622, the square annular structure 51 is integrally formed at the rear end of the shielding plate 5, and the distance between the square annular structure 51 and the first connecting portion 612 and the second connecting portion 622 is approximately equal to The distance between the shielding plate 5 and the first contact portion 611 and the second contact portion 621 is such that the characteristic impedance variation of the entire electrical connector 2 is controlled within a small range, and the smaller the characteristic impedance change is for the high frequency. The more favorable the signal transmission is, the better the stability of the characteristic impedance can be improved, so that the problem of poor high-frequency signal transmission which is easily generated by the prior art can be solved.

In summary, the electrical connector of the present invention is used to add the rear end of the shielding plate. a square annular structure, the square annular structure is located between the first connecting portion and the second connecting portion, the front side plate is adjacent to the second connecting portion, and the rear side plate is adjacent to the first connecting portion, so that the front side plate is connected to the second side The distance between the portions is approximately equal to the distance between the rear side plate and the first connecting portion, and the shielding plate The distance between the first contact portion and the second contact portion is approximately equal to the distance between the square ring structure and the first connecting portion and the second connecting portion, so that the characteristic impedance variation of the entire electrical connector can be controlled to be small. The utility model can have stable characteristic impedance performance, so that the purpose of facilitating high-frequency signal transmission can be achieved, so that the problem that the high-frequency signal transmission effect easily generated by the prior art is not good can be solved.

31‧‧‧ base

311‧‧‧ Reception trough

32‧‧‧ tongue plate

33‧‧‧Fixed blocks

34‧‧‧protection block

4‧‧‧Metal casing

42‧‧‧ front opening

43‧‧‧Weld Department

5‧‧‧Shielding board

50‧‧‧Parts Department

501‧‧‧The former section

502‧‧‧The last section

503‧‧‧ openings

51‧‧‧Square ring structure

6‧‧‧Electrical terminal group

61‧‧‧First terminal

62‧‧‧second terminal

7‧‧‧Auxiliary housing

71‧‧‧welding feet

81‧‧‧Upper metal sheet

811‧‧‧Shrap

82‧‧‧Under metal sheet

821‧‧‧ Grounding Department

Claims (10)

An electrical connector includes: an insulative housing having a base portion and a tongue extending forwardly from the base portion, the tongue plate having a first surface and a second surface disposed opposite each other; a metal outer casing Covering the outer side of the insulative housing, the metal outer casing surrounds the tongue plate to form a mating space, the docking space has a front side opening; a shielding plate is disposed on the tongue plate and located on the first surface and the second surface The shielding plate is provided with a square annular structure extending to the base. The square annular structure includes a top side plate, a bottom side plate, a front side plate and a rear side plate, and the front side plate and the front side plate The rear side plate is disposed opposite to each other; and a conductive terminal set is disposed on the tongue plate, wherein the conductive terminal set includes a plurality of first terminals and a plurality of second terminals, each of the first terminals having a first contact portion and Connecting a first connecting portion of the first contact portion, the first contact portion is disposed on the first surface, the first connecting portion extends to the base portion, and each of the second terminals has a second contact portion and a connection a second connecting portion of the second contact portion, the second connecting portion is disposed on the second surface, the second connecting portion extends to the base portion, and the square annular structure is located at the first connecting portion and the second portion Between the connecting portions, the front side panel is adjacent to the second connecting portion, and the rear side panel is adjacent to the first connecting portion. The electrical connector of claim 1, wherein the second connecting portion and the first connecting portion are disposed in parallel in a front-rear direction and extend vertically downward, and are disposed opposite to each other between the front side plate and the second connecting portion The distance is substantially equal to the distance between the rear side panel and the first connecting portion disposed in parallel. The electrical connector of claim 2, wherein the shielding plate comprises a substrate portion between the first contact portion and the second contact portion, between the first contact portion and the substrate portion The distance is substantially equal to the distance between the rear side plate and the first connecting portion, and the distance between the second contact portion and the substrate portion is substantially equal to the distance between the front side plate and the second connecting portion. The electrical connector of claim 2, wherein the length of the bottom side panel is greater than a distance between the front side panel and the second connecting portion. The electrical connector of claim 2, wherein the length of the bottom side panel is greater than a distance between the first contact portion and the second contact portion. The electrical connector of claim 2, wherein each of the first terminals has a first pin, each of the second terminals has a second pin, the first pin and the second pin Protruding outside the insulating body, a gap is formed between the first pin and the second pin, the spacing being greater than the length of the bottom side plate. The electrical connector of claim 3, wherein the substrate portion includes a front portion and a rear portion, the front portion being located between the first contact portion and the second contact portion, the rear portion extending to the base portion The top side portion is provided with the top side plate, and the rear end portion and the square annular structure are integrally formed, and the rear portion contacts the front portion to form electrical conduction. The electrical connector of claim 2, further comprising: a fixing block disposed on the base, wherein the base is provided with a receiving slot, the fixing block is assembled in the receiving slot, and the square annular structure is disposed on the fixing And a protective block assembled in the receiving slot, wherein the protective block covers the fixed block. The electrical connector of claim 2, further comprising: an upper metal piece disposed on an upper side of the base; and a lower metal piece disposed on a lower side of the base, the upper metal piece and the lower metal piece being The upper and lower sides are oppositely disposed and extend toward the tongue plate. The shielding plate is provided with at least one opening corresponding to the upper metal piece and the lower metal piece. The electrical connector of any one of claims 1 to 9, wherein the top side panel, the bottom side panel, the front side panel, and the rear side panel are integrally formed annular structures, the rear side panel being opposite to the The top side panel extends downwardly, and the bottom side panel is connected to the rear side panel and extends forward in a direction toward the front side of the insulative housing. The top side panel and the bottom side panel are disposed in parallel with each other. The front end of the bottom side panel is connected to the front side. a side panel that extends upward relative to the bottom side panel.