Electrical connector

Abstract

The present invention discloses an electrical connector, which includes a terminal module and a shielding shell covered on the terminal module, the terminal module includes a base and a tongue plate extending forward from the base, the shielding shell covers the outer side of the terminal module and forms a forward-opening docking cavity with the tongue plate, the terminal module includes an insulating body and a first row of conductive terminals, a second row of conductive terminals, and a circuit board fixed on the insulating body, and the circuit board is located between the first row of conductive terminals and the second row of conductive terminals.

Description

Technical Field

[0001] The invention relates to an electric connector. Background Art

[0002] The electrical connector in the prior art includes a terminal module and a shielding shell covered on the terminal module. The terminal module includes an insulating body and a first terminal group, a second terminal group, and a shielding member fixed on the insulating body. The first terminal group and the second terminal group are arranged adjacent to each other in the up and down directions, and the shielding member is located between the first terminal group and the second terminal group. The first terminal group includes a first row of conductive terminals and a first insulator integrally formed with the first row of conductive terminals, and the second terminal group includes a second row of conductive terminals and a second insulator integrally formed with the second row of conductive terminals. The insulating body is integrally formed with the first terminal group, the second terminal group, and the shielding member to form a terminal module. The terminal module includes a base and a tongue plate extending forward from the base. The shielding shell covers the outside of the terminal module and forms a forward-opening docking cavity with the tongue plate, and the docking cavity is for the docking connector to be inserted. The manufacturing process of the electrical connector is relatively complicated and the cost is relatively high.

[0003] In view of this, the present invention proposes a new electrical connector. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide an electrical connector with a simple manufacturing process and low cost.

[0005] The present invention is achieved through the following technical solutions:

[0006] An electrical connector, the electrical connector comprising a terminal module and a shielding shell covering the terminal module, the terminal module comprising a base and a tongue extending forward from the base, the shielding shell covering the outside of the terminal module and forming a forward-opening docking cavity with the tongue, the terminal module comprising an insulating body and a first row of conductive terminals, a second row of conductive terminals, and a circuit board fixed to the insulating body, the circuit board being located between the first row of conductive terminals and the second row of conductive terminals.

[0007] Furthermore, a welding piece is formed on the surface of the circuit board, and the welding piece abuts against the corresponding conductive terminal.

[0008] Furthermore, a shielding layer with a shielding function is provided in the middle position of the circuit board in the thickness direction.

[0009] Furthermore, the shielding layer is copper foil, and the shielding layer covers the entire plane where the circuit board is located.

[0010] Furthermore, the first row of conductive terminals includes two first grounding terminals located on both sides, the second row of conductive terminals includes two second grounding terminals located on both sides, the first grounding terminal includes a terminal body, a first additional portion extending outward from the side edge of the terminal body, and a first reinforcing portion extending downward from the front edge of the first additional portion and then extending forward, the second grounding terminal includes a terminal body, a second additional portion extending outward from the side edge of the terminal body, and a second reinforcing portion extending upward from the front edge of the second additional portion and then extending forward, the first reinforcing portion and the second reinforcing portion are aligned and fitted together in the up and down directions, the first reinforcing portion and the second reinforcing portion are inwardly pressed against the side of the circuit board, and the first reinforcing portion and the second reinforcing portion protrude outward from the side of the tongue plate.

[0011] Furthermore, the first grounding terminal also includes a first protrusion extending outward from the side edge of the terminal body, the first protrusion is located on the rear side of the first additional part, the first protrusion protrudes outward from the side of the base, and the first protrusion contacts the shielding shell.

[0012] Further, the first row of conductive terminals are sequentially arranged in the transverse direction: a first ground terminal, a first USB3.1 differential signal terminal pair, a first power terminal, a first PD terminal, a first USB2.0 differential signal terminal pair, a first sideband use terminal, a first power terminal, a first USB3.1 differential signal terminal pair, and a first ground terminal. In the same direction, the second row of conductive terminals are sequentially arranged in the transverse direction: a second ground terminal, a second USB3.1 differential signal terminal pair, a second power terminal, a second sideband use terminal, a second USB2.0 differential signal terminal pair, a second PD terminal, a second power terminal, a second USB3.1 differential signal terminal pair, and a second ground terminal. The first row of conductive terminals and the second row of conductive terminals are aligned one by one in the up and down direction.

[0013] Further, the circuit board includes three front-end through holes, which are located on the front side of the circuit board and are evenly arranged in the horizontal direction. The three front-end through holes are sequentially arranged in the horizontal direction: a first front-end through hole, a second front-end through hole, and a third front-end through hole. The first front-end through hole is arranged corresponding to the first USB3.1 differential signal terminal pair of the first row of conductive terminals and the second USB3.1 differential signal terminal pair of the second row of conductive terminals in the up-down direction, the second front-end through hole is arranged corresponding to the first USB2.0 differential signal terminal pair of the first row of conductive terminals and the second USB2.0 differential signal terminal pair of the second row of conductive terminals in the up-down direction, and the third front-end through hole is arranged corresponding to the first USB3.1 differential signal terminal pair of the first row of conductive terminals and the second USB3.1 differential signal terminal pair of the second row of conductive terminals in the up-down direction.

[0014] Furthermore, the circuit board also includes two middle through holes located on the rear sides of the three front through holes, the two middle through holes are located in the middle of the circuit board and are evenly arranged in the horizontal direction, and the two middle through holes are sequentially in the horizontal direction: a first middle through hole and a second middle through hole, the first middle through hole corresponds to the first power terminal and the first PD terminal of the first row of conductive terminals in the up and down direction, the first middle through hole corresponds to the second power terminal and the second sideband use terminal of the second row of conductive terminals in the up and down direction; the second middle through hole corresponds to the first sideband use terminal and the first power terminal of the first row of conductive terminals in the up and down direction, and the second middle through hole corresponds to the second PD terminal and the second power terminal of the second row of conductive terminals in the up and down direction.

[0015] Furthermore, the insulating body is integrally formed with the first row of conductive terminals, the second row of conductive terminals, and the circuit board.

[0016] Compared with the prior art, the electrical connector of the present invention only requires one injection molding process, the process is simple and cost-saving; the circuit board with copper foil is arranged between the first row of conductive terminals and the second row of conductive terminals, and the shielding effect is better; the first reinforcement part of the first grounding terminal of the first row of conductive terminals and the second reinforcement part of the second grounding terminal of the second row of conductive terminals are electrically connected together by spot welding, and the first reinforcement part and the second reinforcement part are inwardly pressed against the side of the circuit board, and the first reinforcement part and the second reinforcement part protrude outward from the side of the tongue plate, which increases the strength of the terminal module, so that the electrical connector can withstand greater plugging and unplugging force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the electrical connector in the present invention;

[0018] Figure 2 yes Figure 1 A perspective exploded view of the electrical connector shown;

[0019] Figure 3 yes Figure 2 A further exploded perspective view of the electrical connector;

[0020] Figure 4 yes Figure 3 A further exploded perspective view of the electrical connector;

[0021] Figure 5 yes Figure 4 A further exploded perspective view of the electrical connector;

[0022] Figure 6 yes Figure 3The schematic diagram of the structure of the first terminal group, the second terminal group and the double-layer printed circuit board is shown. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0024] See also Figures 1 to 6 , is an electrical connector 100 of the present invention, which is installed on an external circuit board (not shown), and the electrical connector 100 includes a terminal module 10 and a shielding shell 20 covering the terminal module 10. The terminal module 10 includes an insulating body 13 and a first row of conductive terminals 30, a second row of conductive terminals 40, and a double-layer printed circuit board 50 fixed to the insulating body 13. The first row of conductive terminals 30 and the second row of conductive terminals 40 are aligned one by one along the up and down direction, and the double-layer printed circuit board 50 is located between the first row of conductive terminals 30 and the second row of conductive terminals 40. The insulating body 13 is integrally formed with the first row of conductive terminals 30, the second row of conductive terminals 40, and the double-layer printed circuit board 50 to form the terminal module 10. The terminal module 10 includes a base 11 and a tongue plate 12 extending forward from the base 11, and the tongue plate 12 includes an upper surface and a lower surface. The shielding shell 20 covers the outer side of the terminal module 10 and forms a forward-opening docking cavity 60 with the tongue plate 12, and the docking cavity 60 is for the docking connector to be inserted. In this embodiment, the electrical connector is a Type C connector.

[0025] The first row of conductive terminals 30 includes twelve first conductive terminals arranged in a transverse direction, and the second row of conductive terminals 40 includes twelve second conductive terminals arranged in a transverse direction, and the twelve first conductive terminals and the twelve second conductive terminals are aligned one by one in the vertical direction. The first conductive terminal includes a first contact portion, a first welding portion, and a first retaining portion located between the first contact portion and the first welding portion, and the second conductive terminal includes a second contact portion, a second welding portion, and a second retaining portion located between the second contact portion and the second welding portion. The first retaining portions of the twelve first conductive terminals and the second retaining portions of the twelve second conductive terminals are all retained on the base 11, the first contact portions of the twelve first conductive terminals are all exposed on the upper surface of the tongue plate 12, and the second contact portions of the twelve second conductive terminals are all exposed on the lower surface of the tongue plate 12, and the first welding portions of the twelve first conductive terminals and the second welding portions of the twelve second conductive terminals extend beyond the base 11 and are soldered to the external circuit board in a patch-type manner.

[0026] The twelve first conductive terminals are arranged in sequence along the horizontal direction as follows: a first grounding terminal 31, a first USB3.1 differential signal terminal pair 32, a first power terminal 33, a first PD terminal 34, a first USB2.0 differential signal terminal pair 35, a first sideband terminal 36, a first power terminal 33, a first USB3.1 differential signal terminal pair 32, and a first grounding terminal 31. In the same direction, the twelve second conductive terminals are arranged in sequence along the horizontal direction as follows: a second grounding terminal 41, a second USB3.1 differential signal terminal pair 42, a second power terminal 43, a second sideband terminal 44, a second USB2.0 differential signal terminal pair 45, a second PD terminal 46, a second power terminal 43, a second USB3.1 differential signal terminal pair 42, and a second grounding terminal 41. The first grounding terminal 31 includes a terminal body portion 310, a first additional portion 311 extending outward from a side edge of the terminal body portion 310, and a first reinforcing portion 312 extending downward from a front edge of the first additional portion 311 and then extending forward. The second grounding terminal 41 includes a terminal body 410, a second additional portion 411 extending outward from the side edge of the terminal body 410, and a second reinforcing portion 412 extending upward and then forward from the front edge of the second additional portion 411. The first reinforcing portion 312 and the second reinforcing portion 412 are aligned in the up-down direction and welded together. The first reinforcing portion 312 and the second reinforcing portion 412 are inwardly pressed against the side of the double-layer printed circuit board 50, and the first reinforcing portion 312 and the second reinforcing portion 412 protrude outward from the side of the tongue plate 12. The first grounding terminal 31 also includes a first protruding portion 313 extending outward from the side edge of the terminal body 310. The first protruding portion 313 is located at the rear side of the first additional portion 311. The first protruding portion 313 protrudes outward from the side of the base 11. The first protruding portion 313 contacts the shielding shell 20, so that the shielding effect is better.

[0027] The double-layer printed circuit board 50 includes a first printed circuit board 51, a second printed circuit board 52, and a copper foil 53 located between the first printed circuit board 51 and the second printed circuit board 52. The first printed circuit board 51 and the second printed circuit board 52 are symmetrically arranged in the vertical direction. Twelve first welding plates 510 are arranged on the upper surface of the first printed circuit board 51, and the twelve first conductive terminals of the first row of conductive terminals 30 are welded to the twelve first welding plates 510. Twelve second welding plates (not shown) are arranged on the lower surface of the second printed circuit board 52, and the twelve second conductive terminals of the second row of conductive terminals 40 are welded to the twelve second welding plates. The double-layer printed circuit board 50 is provided with three front through holes 54, and the three front through holes 54 are located at the front side of the double-layer printed circuit board 50 and are evenly arranged in the horizontal direction. The double-layer printed circuit board 50 also includes two middle through holes 55 located at the rear side of the three front through holes 54, and the two middle through holes 55 are located in the middle of the double-layer printed circuit board 50 and are evenly arranged in the horizontal direction. The three front through holes 54 and the two middle through holes 55 all penetrate the double-layer printed circuit board 50 in the up-down direction, and the size of the middle through hole 55 is larger than that of the front through hole 54. The three front through holes 54 are sequentially arranged in the horizontal direction as follows: a first front through hole 541, a second front through hole 542, and a third front through hole 543, and the two middle through holes 55 are sequentially arranged in the horizontal direction as follows: a first middle through hole 551 and a second middle through hole 552. The first front through hole 541 is arranged in the up-down direction corresponding to the first USB3.1 differential signal terminal pair 32 of the first row of conductive terminals 30 and the second USB3.1 differential signal terminal pair 42 of the second row of conductive terminals 40, the second front through hole 542 is arranged in the up-down direction corresponding to the first USB2.0 differential signal terminal pair 35 of the first row of conductive terminals 30 and the second USB2.0 differential signal terminal pair 45 of the second row of conductive terminals 40, and the third front through hole 543 is arranged in the up-down direction corresponding to the first USB3.1 differential signal terminal pair 32 of the first row of conductive terminals 30 and the second USB3.1 differential signal terminal pair 42 of the second row of conductive terminals 40. The first middle through hole 551 is arranged in the vertical direction corresponding to the first power terminal 33 and the first PD terminal 34 of the first row of conductive terminals 30, and the first middle through hole 551 is arranged in the vertical direction corresponding to the second power terminal 43 and the second sideband terminal 44 of the second row of conductive terminals 40; the second middle through hole 552 is arranged in the vertical direction corresponding to the first sideband terminal 36 and the first power terminal 33 of the first row of conductive terminals 30, and the second middle through hole 552 is arranged in the vertical direction corresponding to the second PD terminal 46 and the second power terminal 43 of the second row of conductive terminals 40. The three front through holes 54 are used to adjust the characteristic impedance of the double-layer printed circuit board 50.

[0028] The molding process of the Type C connector 100 is briefly described below:

[0029] (1) soldering the second row of conductive terminals 40 to the twelve second soldering pads on the lower surface of the double-layer printed circuit board 50, and soldering the first row of conductive terminals 30 to the twelve first soldering pads 510 on the upper surface of the double-layer printed circuit board 50;

[0030] (2) The first reinforcing portion 312 of the first grounding terminal 31 of the first row of conductive terminals 30 and the second reinforcing portion 412 of the second grounding terminal 41 of the second row of conductive terminals 40 are aligned in the vertical direction, and the first reinforcing portion 312 and the second reinforcing portion 412 are electrically connected together by laser spot welding;

[0031] (3) The insulating body 13 is integrally formed with the first row of conductive terminals 30, the double-layer printed circuit board 50, and the second row of conductive terminals 40 by injection molding to form a terminal module 10;

[0032] (4) Assembling the shielding shell 20 to form the Type C connector 100 .

[0033] The Type C connector 100 in the present invention only requires one injection molding process, which is simple to manufacture and saves costs. The double-layer printed circuit board 50 with copper foil 53 is arranged between the first row of conductive terminals 30 and the second row of conductive terminals 40, and the shielding effect is better. The first reinforcing portion 312 of the first grounding terminal 31 of the first row of conductive terminals 30 and the second reinforcing portion 412 of the second grounding terminal 41 of the second row of conductive terminals 40 are electrically connected together by spot welding, and the first reinforcing portion 312 and the second reinforcing portion 412 are inwardly pressed against the side of the double-layer printed circuit board 50, and the first reinforcing portion 312 and the second reinforcing portion 412 protrude outward from the side of the tongue plate 12, thereby increasing the strength of the terminal module 10, so that the Type C connector 100 can withstand a greater plugging and unplugging force.

[0034] The above description is only an implementation mode of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electrical connector, characterized in that: The electrical connector comprises a terminal module and a shielding shell covering the terminal module, the terminal module comprises a base and a tongue plate extending forward from the base, the shielding shell covers the outer side of the terminal module and forms a docking cavity opening forward with the tongue plate, the terminal module comprises an insulating body and a first row of conductive terminals, a second row of conductive terminals and a circuit board fixed to the insulating body, the circuit board being sandwiched between the first row of conductive terminals and the second row of conductive terminals; The insulating body is fixed to the first row of conductive terminals, the circuit board and the outer periphery of the second row of conductive terminals by integral injection molding; The first row of conductive terminals includes a plurality of first conductive terminals, and the plurality of first conductive terminals are all in contact with the upper surface of the circuit board; The second row of conductive terminals includes a plurality of second conductive terminals, and the plurality of second conductive terminals are all in contact with the lower surface of the circuit board.

2. The electrical connector according to claim 1, characterized in that: A plurality of welding pieces are formed on the upper surface and the lower surface of the circuit board, and each welding piece is in contact with the corresponding first conductive terminal and the second conductive terminal in a one-to-one correspondence.

3. The electrical connector according to claim 1, characterized in that: A shielding layer with a shielding function is arranged in the middle of the circuit board in the thickness direction.

4. The electrical connector according to claim 3, characterized in that: The shielding layer is copper foil, and the shielding layer covers the entire plane where the circuit board is located.

5. The electrical connector according to claim 1, characterized in that: The first row of conductive terminals includes two first grounding terminals located on both sides, and the second row of conductive terminals includes two second grounding terminals located on both sides, the first grounding terminal includes a terminal body, a first additional portion extending outward from the side edge of the terminal body, and a first reinforcing portion extending downward from the front edge of the first additional portion and then extending forward, the second grounding terminal includes a terminal body, a second additional portion extending outward from the side edge of the terminal body, and a second reinforcing portion extending upward from the front edge of the second additional portion and then extending forward, the first reinforcing portion and the second reinforcing portion are aligned and fitted together in the up and down directions, the first reinforcing portion and the second reinforcing portion are inwardly pressed against the side of the circuit board, and the first reinforcing portion and the second reinforcing portion protrude outward from the side of the tongue plate.

6. The electrical connector according to claim 5, characterized in that: The first grounding terminal also includes a first protrusion extending outward from the side edge of the terminal body, the first protrusion is located at the rear side of the first additional part, the first protrusion protrudes outward from the side of the base, and the first protrusion contacts the shielding shell.

7. The electrical connector according to claim 1, characterized in that: The first row of conductive terminals are sequentially arranged in the transverse direction as follows: a first ground terminal, a first USB3.1 differential signal terminal pair, a first power terminal, a first PD terminal, a first USB2.0 differential signal terminal pair, a first sideband use terminal, a first power terminal, a first USB3.1 differential signal terminal pair, and a first ground terminal. In the same direction, the second row of conductive terminals are sequentially arranged in the transverse direction as follows: a second ground terminal, a second USB3.1 differential signal terminal pair, a second power terminal, a second sideband use terminal, a second USB2.0 differential signal terminal pair, a second PD terminal, a second power terminal, a second USB3.1 differential signal terminal pair, and a second ground terminal. The first row of conductive terminals and the second row of conductive terminals are aligned one by one in the up and down direction.

8. The electrical connector according to claim 7, characterized in that: The circuit board includes three front-end through holes, which are located at the front side of the circuit board and are evenly arranged in the horizontal direction. The three front-end through holes are sequentially arranged in the horizontal direction: a first front-end through hole, a second front-end through hole, and a third front-end through hole. The first front-end through hole is arranged corresponding to the first USB3.1 differential signal terminal pair of the first row of conductive terminals and the second USB3.1 differential signal terminal pair of the second row of conductive terminals in the up-down direction. The second front-end through hole is arranged corresponding to the first USB2.0 differential signal terminal pair of the first row of conductive terminals and the second USB2.0 differential signal terminal pair of the second row of conductive terminals in the up-down direction. The third front-end through hole is arranged corresponding to the first USB3.1 differential signal terminal pair of the first row of conductive terminals and the second USB3.1 differential signal terminal pair of the second row of conductive terminals in the up-down direction.

9. The electrical connector according to claim 8, characterized in that: The circuit board also includes two middle through holes located at the rear sides of the three front through holes, the two middle through holes are located in the middle of the circuit board and are evenly arranged in the horizontal direction, and the two middle through holes are sequentially arranged in the horizontal direction: a first middle through hole and a second middle through hole, the first middle through hole corresponds to the first power terminal and the first PD terminal of the first row of conductive terminals in the up-down direction, the first middle through hole corresponds to the second power terminal and the second sideband use terminal of the second row of conductive terminals in the up-down direction; the second middle through hole corresponds to the first sideband use terminal and the first power terminal of the first row of conductive terminals in the up-down direction, and the second middle through hole corresponds to the second PD terminal and the second power terminal of the second row of conductive terminals in the up-down direction.

10. The electrical connector according to claim 1, characterized in that: The insulating body is integrally formed with the first row of conductive terminals, the second row of conductive terminals, and the circuit board.

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