Electric connector

Abstract

An electric connector comprises a base body extending in the longitudinal direction and a first row of conductive terminals fixed to the base body and arranged in the longitudinal direction, the first row of conductive terminals are provided with contact parts and connecting pins and comprise grounding terminals and signal terminals, and a transmission line is formed on the base through laser direct forming. The transmission line is electrically connected with the grounding terminal and is not electrically connected with the signal terminal. Compared with the prior art, the electric connector has the advantages that the transmission line which is electrically connected with the grounding terminal is formed on the seat body through laser direct forming, the transmission line is arranged between the two rows of conductive terminals in a spaced mode, and the high-frequency performance of the electric connector is good.

Description

[Technical field]

[0001] The invention relates to an electric connector, in particular to an electric connector with a laser direct forming transmission line. [Background technology]

[0002] The prior art refers to Taiwan's utility model patent No. TWM562507U, which discloses an electrical connector, including a seat, two rows of conductive terminals held in the seat, a conductive plastic part disposed between the two rows of conductive terminals, and a metal shell disposed outside the seat, wherein the conductive plastic part is respectively in contact with the grounding terminals in the two rows of conductive terminals, and the conductive plastic part is used to realize the series connection of the grounding terminals, thereby reducing the crosstalk between signals. However, in response to the development trend of high-speed transmission of electrical connectors, the industry's demand for high-frequency performance of electrical connectors continues to increase, and the current electrical connectors cannot meet the demand.

[0003] Therefore, it is necessary to improve the existing electrical connector to meet the needs. [Summary of the invention]

[0004] The technical solution to be solved by the present invention is to provide an electrical connector which can improve high frequency performance.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: an electrical connector, comprising a base body extending in the longitudinal direction, and a first row of conductive terminals fixed to the base body and arranged in the longitudinal direction, the first row of conductive terminals having contact portions and pins, the first row of conductive terminals including ground terminals and signal terminals, and a transmission line is formed on the base by direct laser molding, the transmission line is electrically connected to the ground terminal but not electrically connected to the signal terminal.

[0006] Furthermore, the first row of conductive terminals includes a plurality of ground terminals and a plurality of signal terminals, and the transmission line is electrically connected to the plurality of ground terminals and connects the plurality of ground terminals in series.

[0007] Furthermore, the transmission line includes grounding lines corresponding to the plurality of grounding terminals and connecting lines connecting the plurality of grounding lines to each other, the grounding terminals abut against the grounding lines, and the connecting lines are spaced apart from the signal terminals in a lateral direction perpendicular to the longitudinal direction.

[0008] Furthermore, the electrical connector also includes a second row of conductive terminals arranged laterally opposite to the first row of conductive terminals, the grounding terminals of the second row of conductive terminals abut against the grounding circuit, and the signal terminals of the second row of conductive terminals are laterally spaced apart from the connecting circuit.

[0009] Furthermore, the seat body includes a docking block and a seat body block assembled together, the docking block includes a docking tongue plate and a mounting portion, the seat body block includes a bottom plate and a surrounding wall portion, the bottom plate is provided with a mounting opening, the mounting portion of the docking block is fixed in the mounting opening, the docking tongue plate is located in the surrounding wall portion, and a docking cavity is formed between the docking tongue plate and the surrounding wall portion, the docking block includes a base block and a covering block injection molded outside the base block, the lateral sides of the covering block constitute the docking surfaces of the docking tongue plate, the lateral sides of the base block are directly laser-formed to form the transmission line, the side surface includes a side concave surface and a side convex surface protruding compared to the side concave surface, the side convex surface forms the grounding line for the electrical abutment of the grounding terminal, and the side concave surface forms the connecting line to avoid the signal terminal.

[0010] Furthermore, the upper and lower sides of the side surfaces of the base block on both lateral sides protrude to form a plurality of protrusions arranged at intervals along the longitudinal direction, and positioning grooves of the flat plate portion for fixing the first row of conductive terminals and the second row of conductive terminals are formed between adjacent protrusions, and the grounding circuit extends into the positioning groove.

[0011] Furthermore, the first row of conductive terminals and the second row of conductive terminals have a flat plate portion and the pins of the seat body extending from the flat plate portion, the flat plate portion has a relative outer surface and an inner surface, the outer surface is exposed to the docking surface of the docking tongue plate, the inner surface of the grounding terminal abuts against the grounding circuit, and the inner surface of the signal terminal is spaced apart from the connecting circuit in the horizontal direction.

[0012] Furthermore, the side concave surface has a concave bottom surface and inclined surfaces protruding from both longitudinal sides of the concave bottom surface toward the side convex surface to connect to the side convex surface, the side convex surface is a plane, and the concave bottom surface is a plane.

[0013] Furthermore, in the first row of conductive terminals and the second row of conductive terminals, two adjacent signal terminals form a differential terminal pair, the differential terminal pair and the ground terminals are arranged alternately, and the longitudinal width of the concave bottom surface is substantially the same as the width of the differential terminal pair.

[0014] Furthermore, the transmission line formed by the grounding line and the connecting line is disposed continuously and uninterruptedly in the longitudinal direction, and the first row of conductive terminals and the second row of conductive terminals are located within the range of the transmission line in the longitudinal direction.

[0015] Compared with the prior art, the present invention has the following beneficial effects: in the electrical connector of the present invention, a transmission line is formed on the seat body by laser direct molding, and the transmission line is electrically connected to the ground terminal but not electrically connected to the signal terminal. The transmission line electrically connected to the ground terminal is thus effectively guaranteed to have high frequency performance of the electrical connector.

Brief Description of the Drawings

[0016] Figure 1 It is a three-dimensional diagram of the electrical connector of the present invention.

[0017] Figure 2 yes Figure 1 Another perspective of the stereogram.

[0018] Figure 3 It is a three-dimensional exploded view of the electrical connector of the present invention.

[0019] Figure 4 yes Figure 3 Another perspective exploded view with the metal shell removed.

[0020] Figure 5 It is a partial three-dimensional exploded view of the electrical connector of the present invention.

[0021] Figure 6 yes Figure 5 Another perspective exploded view.

[0022] Figure 7 It is a schematic diagram of the laser direct forming transmission line on the base block of the present invention.

[0023] Figure 8 It is a three-dimensional view of the conductive terminal installed on the base block.

[0024] Fig. 9 yes Figure 1 Section view along line AA.

[0025] Fig.10 yes Figure 1 Section view along line BB. [Specific implementation method]

[0026] In order to facilitate a better understanding of the purpose, structure, characteristics and effects of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.

[0027] See also Figures 1 to 10 As shown, the present invention is an electrical connector 100 for high-speed signal transmission, which is installed on a circuit board (not shown). The electrical connector 100 is an FPIO connector developed by our company.

[0028] The electrical connector 100 includes an insulating base body 1 extending in the longitudinal direction, a conductive terminal 2 fixed to the base body 1, a transmission line 3 formed by laser direct molding on the base body 1, and a metal shell 4 arranged around and fixed outside the base body 1. The conductive terminal 2 includes a first row of conductive terminals 2a arranged in the longitudinal direction fixed to the base body 1 and a second row of conductive terminals 2b opposite to the first row of conductive terminals 2a in a transverse direction perpendicular to the longitudinal direction. The first row of conductive terminals 2a and the second row of conductive terminals 2b both include a plurality of grounding terminals 20G and a plurality of signal terminals. The transmission line 3 is located between the first conductive terminal 2a and the second conductive terminal 2b in the transverse direction and is in electrical contact with the grounding terminals 20G of the two rows of conductive terminals.

[0029] The seat body 1 includes a docking tongue plate 101 and a surrounding wall portion 102 surrounding the docking tongue plate 101. The surrounding wall portion 102 and the docking tongue plate 101 are spaced to form a docking cavity 103. The docking cavity 103 passes through the docking surface 104 of the seat body 1 upward. The metal shell 4 is installed on the outer side of the surrounding wall portion 102 and extends upward to exceed the docking surface 104 of the seat body 1. The metal shell 4 includes a first side wall 41, a second side wall 42 opposite to the first side wall 41, and two end walls 43 connecting the first side wall 41 and the second side wall 42. The first side wall 41 of the metal shell 4 is provided with a locking hole 411. The locking hole 411 is used for a locking arm (not shown) of a docking connector (not shown) to be buckled in, thereby completing the locking function. The lower ends of the first side wall 41 and the second side wall 42 extend downward to form solder feet 40 soldered to a circuit board (not shown). The height of the second side wall 42 of the metal shell 4 is lower than that of the first side wall 41. The second side wall 42 is roughly flush with the docking surface 104. The two opposite end walls 43 are stepped, including a first protruding portion 431 protruding from the docking surface 104 at a first height and a second protruding portion 432 protruding from the docking surface 104 at a second height. The second protruding portion 432 is higher than the first protruding portion 431. The second protruding portion 432 is roughly flush with the height of the first side wall 41. A portion of the first protruding portion 431 continues to extend to the corner of the second side wall 42. A plurality of guide pieces 44 further extend upward from the second protruding portion 432 and the first side wall 41. The high and low structure of the metal shell 40 can better wrap the docking connector (not shown) therein, which not only has a good alignment effect, but also can ensure force balance. A plurality of retaining blocks 120 are provided on the outer side of the seat body 1. The metal shell 4 is supported downwardly in the slit of the retaining blocks 120, which can fix the metal shell 4 well.

[0030] The seat body 1 includes a docking block 11 and a seat body block 12 assembled together, and the first row of conductive terminals 2a and the second row of conductive terminals 2b are fixed on both lateral sides of the docking block 11. The docking block 11 includes the docking tongue plate 101 and the mounting portion 105, and the seat body block 12 includes a bottom plate 121 and the surrounding wall portion 102. The bottom plate 121 is provided with a mounting opening 1211, and the docking block 11 is installed into the mounting opening 1211 from the bottom surface of the seat body block 12. The mounting portion 105 of the docking block 11 is installed in the mounting opening 1211 by means of clamping and interference, so that the two are assembled together to form the seat body 12, and the first row of conductive terminals 2a and the second row of conductive terminals 2b have contact portions 213 exposed to the docking surface 1011 of the docking tongue plate 101 and pins 22 extending out of the seat body 1. The mounting portion 105 is provided with convex portions 1051 at both longitudinal ends, and the bottom surface of the bottom plate 121 is recessed upward to form a groove 1212, and the convex portion 1051 is fixed in the groove 1212 by interference, and the groove 1212 can limit the upward movement of the docking block 11. The mounting portion 105 has protruding blocks 1052 on both lateral sides, and correspondingly, the side wall 1021 extending longitudinally of the surrounding wall portion 102 is provided with a retaining hole 1022 for the retaining block 1052 to be inserted into, and the cooperation of the two can limit the movement of the docking block 11 in the up and down directions. In addition, the inner wall surface of the side wall 1021 is provided with a plurality of convex ribs 1023, and the convex ribs 1023 are used to interfere with the lateral sides of the mounting portion 105.

[0031] Each conductive terminal 2 includes a flat plate portion 21 and the pin 22 extending from the flat plate portion 21 out of the base body 1. The flat plate portion 21 has an outer surface 211 and an inner surface 212 opposite to each other. The outer surface 211 is exposed to the base body 1 to form a contact portion 213. Specifically, the contact portion 213 is exposed to the mating surface 1011 of the mating tongue plate 101. Each row of the conductive terminals 2 includes a signal terminal 20S and a ground terminal 20G. In the present invention, in each row of the conductive terminals 2, two adjacent signal terminals 20S form a differential terminal pair. The differential terminal pair and the ground terminal 20G are arranged alternately with each other. A ground terminal 20G is provided on each longitudinal side of a differential terminal pair. The upper edge of the flat plate portion 21 of the ground terminal 20G protrudes upward from the upper edge of the flat plate portion 21 of the signal terminal 20S. The width of the flat plate portion 21 of the ground terminal 20G is also greater than the width of the flat plate portion 21 of the signal terminal 20S.

[0032] The docking block 11 further includes a base block 110 and a covering block 111. The first row of conductive terminals 2a and the second row of conductive terminals 2b are respectively positioned on two lateral sides of the base block 110. The covering block 111 is injection molded outside the base block 110 and holds the first row of conductive terminals 2a and the second row of conductive terminals 2b. The lateral sides of the covering block 111 constitute the docking surfaces 1011 of the docking tongue plate 101. The lateral side surfaces 1100 on the lateral sides of the base block 110 include a side concave surface 1101 and a side convex surface 1102 protruding from the side concave surface 1101. The upper and lower sides of the lateral side surfaces 1100 on the lateral sides of the base block 110 protrude to form a plurality of protruding block portions 1103 arranged at intervals in the longitudinal direction. Positioning grooves 1104 are formed between adjacent protruding block portions 1103. The positioning grooves 1104 are used to position the flat plate portions 21 of the first row of conductive terminals 2a and the second row of conductive terminals 2b. The side surfaces 1100 on both sides of the base block 110 are directly laser-formed to form the transmission line 3, and the transmission line 3 includes grounding lines 31 corresponding to the plurality of grounding terminals 20G and connecting lines 32 connecting the plurality of grounding lines to each other, the grounding line 31 is formed on the side convex surface 1102, and the connecting line 32 is formed on the side concave surface 1101. When the flat plate portions 21 of the first row of conductive terminals 2a and the second row of conductive terminals 2b are fixed in the positioning groove 1104, the inner surface 212 of the flat plate portion 21 of the grounding terminal 20G abuts against the grounding line 31, and the inner surface 212 of the flat plate portion 21 of the signal terminal 20S is laterally spaced apart from the connecting line 32 by the setting of the side concave surface 1101 and is not connected to the connecting line 32. The transmission line 3 composed of the grounding line 31 and the connecting line 32 is arranged continuously and uninterruptedly in the longitudinal direction. The first row of conductive terminals 2a and the second row of conductive terminals 2b are located within the range of the transmission line 3 in the longitudinal direction. Since the transmission line 3 is arranged between the first row of conductive terminals 2a and the second row of conductive terminals 2b in the transverse direction, the signal crosstalk between the two rows of conductive terminals can be effectively reduced. In the present invention, the transmission line 3 further extends the line 33, and the extended line 33 is formed on the end surfaces 1105 on both sides of the longitudinal direction of the base block 110 to connect the transmission lines 3 on the opposite side surfaces 1100 of the base block 110 to each other, so that the transmission line 3 of the base block 110 forms a closed ring structure. In this way, the high-frequency performance of the electrical connector 100 is better.

[0033] The side concave surface 1101 has a concave bottom surface 11011 and an inclined surface 11012 protruding from both longitudinal sides of the concave bottom surface 11011 to the side convex surface 1102 to connect to the side convex surface. The concave bottom surface 11011 is a plane. The connection between the concave bottom surface 11011 and the inclined surface 11012 is an arc transition. The connection between the inclined surface 11012 and the side convex surface 1102 is an arc transition. The longitudinal width of the concave bottom surface 11011 is roughly the same as the width of the differential signal pair formed by a pair of ground terminals 20G. The side convex surface 1102 is a plane. The side convex surface 1102 is set as a plane to effectively ensure that the inner surface 212 of the flat plate portion 21 is in reliable electrical contact with it. During production, the lateral spacing between the transmission line 3 and the signal terminal 20S can be adjusted according to the depth of the depression of the side concave surface 1101, so as to achieve reliable high-frequency performance.

[0034] The manufacturing method of the electrical connector 100 of the present invention is described below. Insulating material is provided and injection molded to form a base block 110. A transmission line is formed by laser direct molding on the side surface 1100 of the base block 110. The transmission line includes a grounding line 31 corresponding to the side convex surface 1102 of the side surface and a connecting line 32 connected to the grounding line 31 corresponding to the side concave surface 1101. A first row of conductive terminals 2a and a second row of conductive terminals 2b are provided. The positioning portions 21 of the two rows of conductive terminals are respectively positioned on the side surfaces 1100 of the base block 110. The protruding block portion 1103 of the surface 1100; providing insulating material and injection molding the outer side of the base block 110 to form a covering block 111 for holding two rows of conductive terminals, the base block 110 and the covering block 111 constitute a docking block 11; providing a base block 12, assembling the docking block 11 composed of the base block 110 and the covering block 111 from bottom to top through the installation opening 1211 of the base block 12 and fixing it to the base block 12; providing a metal shell 4, assembling the metal shell 4 from top to bottom and fixing it to the base block 12 to form the electrical connector 100.

[0035] The above are only preferred embodiments of the present invention, and should not be used to limit the scope of the present invention. That is, all simple equivalent changes and modifications made according to the claims and the contents of the present invention should still fall within the scope of the present invention.

Claims

1. An electrical connector, comprising a seat extending in a longitudinal direction, and a first row of conductive terminals fixed to the seat and arranged in a longitudinal direction, wherein the first row of conductive terminals has contact portions and pins, and the first row of conductive terminals includes ground terminals and signal terminals, wherein: A transmission line is formed on the base by laser direct molding, wherein the transmission line is electrically connected to the ground terminal but not electrically connected to the signal terminal.

2. The electrical connector according to claim 1, wherein: The first row of conductive terminals includes a plurality of ground terminals and a plurality of signal terminals. The transmission line is electrically connected to the plurality of ground terminals and connects the plurality of ground terminals in series.

3. The electrical connector according to claim 2, wherein: The transmission line includes grounding lines corresponding to the grounding terminals and connecting lines connecting the grounding lines to each other. The grounding terminals abut against the grounding lines. The connecting lines are spaced apart from the signal terminals in a transverse direction perpendicular to the longitudinal direction.

4. The electrical connector according to claim 3, wherein: The electrical connector also includes a second row of conductive terminals arranged laterally opposite to the first row of conductive terminals, the grounding terminals of the second row of conductive terminals abut against the grounding circuit, and the signal terminals of the second row of conductive terminals are laterally spaced apart from the connecting circuit.

5. The electrical connector according to claim 4, wherein: The seat body includes a docking block and a seat body block assembled together, the docking block includes a docking tongue plate and a mounting portion, the seat body block includes a bottom plate and a surrounding wall portion, the bottom plate is provided with a mounting port, the mounting portion of the docking block is fixed in the mounting port, the docking tongue plate is located in the surrounding wall portion, and a docking cavity is formed between the docking tongue plate and the surrounding wall portion, the docking block includes a base block and a covering block injection molded outside the base block, the lateral sides of the covering block constitute the docking surface of the docking tongue plate, the lateral sides of the base block are directly laser-formed to form the transmission line, the side surface includes a side concave surface and a side convex surface protruding compared to the side concave surface, the side convex surface forms the grounding line for the electrical abutment of the grounding terminal, and the side concave surface forms the connecting line to avoid the signal terminal.

6. The electrical connector according to claim 5, wherein: The upper and lower sides of the side surfaces of the base block on both sides of the lateral direction protrude to form a plurality of protrusions arranged at intervals along the longitudinal direction, and positioning grooves of the flat plate portion for fixing the first row of conductive terminals and the second row of conductive terminals are formed between adjacent protrusions, and the grounding line extends into the positioning groove.

7. The electrical connector according to claim 5, wherein: The first row of conductive terminals and the second row of conductive terminals have a flat plate portion and the pins of the seat body extending from the flat plate portion, the flat plate portion has an outer surface and an inner surface relative to each other, the outer surface is exposed to the docking surface of the docking tongue plate, the inner surface of the grounding terminal abuts against the grounding circuit, and the inner surface of the signal terminal is spaced apart from the connecting circuit in the horizontal direction.

8. The electrical connector according to claim 5, wherein: The side concave surface has a concave bottom surface and inclined surfaces protruding from both longitudinal sides of the concave bottom surface toward the side convex surface to connect with the side convex surface. The side convex surface is a plane, and the concave bottom surface is a plane.

9. The electrical connector according to claim 8, wherein: In the first row of conductive terminals and the second row of conductive terminals, two adjacent signal terminals form a differential terminal pair, the differential terminal pair and the ground terminals are arranged alternately, and the longitudinal width of the concave bottom surface is substantially the same as the width of the differential terminal pair.

10. The electrical connector according to claim 3, wherein: The transmission line formed by the grounding line and the connecting line is arranged continuously and uninterruptedly in the longitudinal direction, and the first row of conductive terminals and the second row of conductive terminals are located within the range of the transmission line in the longitudinal direction.

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