CN219534907U - Signal terminal, terminal assembly and connector - Google Patents

Abstract

The utility model discloses a signal terminal, which comprises a main body part extending in a first direction, wherein one end of the main body part is a first contact part, and the other end of the main body part is a second contact part used for being electrically connected with a cable; the main body part is provided with a fracture in a first direction, the fracture separates the first contact part from the second contact part, and a first electronic component is electrically connected to the fracture. The utility model also discloses a terminal assembly, which comprises a plurality of ground terminals and a plurality of signal terminals, wherein the signal terminals and the ground terminals are arranged in rows along the second direction, and the ground terminals are arranged between the signal terminals at intervals. The utility model also discloses a connector comprising the terminal assembly. The first electronic component is connected to the fracture of the signal terminal, and the open-circuit signal terminal is connected and conducted together, so that the functions of signal filtering, blocking, optimizing and improving can be achieved, and the electrical performance of the connector is improved and optimized.

Description

Signal terminal, terminal assembly and connector

Technical Field

The utility model relates to the field of electric connectors, in particular to a signal terminal, a terminal assembly comprising the signal terminal and a connector.

Background

In the conventional electrical connector, electronic components such as resistors and capacitors are disposed on a circuit board. As in patent No. 200610108471.X, an electrical connector is disclosed that includes a substrate having a plurality of signal wires and a plurality of ground wires on at least one surface in place of contacts, with parallel capacitors and resistive patches mounted on at least one of the signal wires. The electronic component is arranged on the circuit board and is not suitable for the connector without the circuit board.

The existing connector without a circuit board is provided with a terminal assembly in a connector shell, one end of the terminal assembly is connected with an external electronic component in an inserting mode to achieve electric connection, the other end of the terminal assembly is connected with a cable, signals of a signal terminal are required to improve electric performance through the electronic component, the connector with the structure is not provided with the circuit board, and only the electronic component such as a capacitor or a resistor can be arranged on an external main board, so that the circuit design of the main board is complex, and the miniaturization design is not facilitated.

Disclosure of Invention

The utility model aims to provide a signal terminal, a terminal assembly and a connector, so as to improve and optimize the electrical performance of the connector. In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model discloses a signal terminal, which comprises a main body part extending in a first direction, wherein one end of the main body part is a first contact part, and the other end of the main body part is a second contact part used for being electrically connected with a cable; the main body portion is provided with a fracture in a first direction, the fracture separating the first contact portion from the second contact portion; the electronic device further comprises a first electronic component, wherein the first electronic component is electrically connected to the fracture, or the first electronic component is electrically connected to the fracture through a first patch circuit board.

In some embodiments, the first electronic component is electrically connected to the fracture through a first patch circuit board. Wherein, the first patch circuit board is a PCB or FPC or FFC.

Preferably, the first electronic component is a dc blocking capacitor.

Wherein the distance of the fracture in the first direction is 0.2-5 mm.

The main body part is made of sheet metal materials, and the first contact part and the main body part are bent.

The utility model also discloses a terminal assembly comprising a plurality of ground terminals and a plurality of signal terminals as described above, wherein the signal terminals and the ground terminals are arranged in rows along a second direction, and the signal terminals are spaced apart by the ground terminals.

Further, the portable electronic device further comprises a plastic fixing piece, wherein the signal terminal and the ground terminal are fixed on the plastic fixing piece.

Preferably, a second electronic component is connected between the ground terminal and the adjacent signal terminal.

Preferably, the second electronic component is a resistor-capacitor circuit, and the resistor-capacitor circuit includes a second chip circuit board, and a capacitor and a resistor disposed on the second chip circuit board.

In some embodiments, the second patch circuit board is a PCB or FPC or FFC.

Further, the first electronic component is electrically connected to the fracture through the first patch circuit board, and the first patch circuit board and the second patch circuit board are separately arranged or are arranged as an integrated board.

Preferably, each of the signal terminals and the ground terminals are mounted on the plastic fixing member along a first direction and are arranged on the plastic fixing member in a row along a second direction; the plastic fixing piece is provided with a groove along the second direction, a through hole is formed in the position, corresponding to the fracture position of the signal terminal, of the groove, and the through hole penetrates through the bottom of the groove.

Preferably, the depth of the groove is larger than the thickness of the ground terminal and the signal terminal.

The groove is trapezoid, and the size of the opening end of the groove along the first direction is larger than that of the bottom end.

In some embodiments, the first electronic component is embedded in the groove, and a top end of the first electronic component is located in the groove. The second electronic component is embedded in the groove, the top end of the second electronic component is positioned in the groove, or the second electronic component is positioned outside the plastic fixing piece and is arranged on one side of the signal terminal or the ground terminal, which is electrically connected with the cable.

Preferably, a protective cover plate for sealing the first electronic component or/and the second electronic component in the groove is arranged on the groove; or, the groove is filled with a plastic layer for coating the first electronic component or/and the second electronic component.

The utility model also discloses a connector, which comprises a shell, a cable and the terminal assembly, wherein one end of the shell is provided with a butt joint slot, the terminal assembly is fixed in the shell, the first contact part of the signal terminal and the front end of the ground terminal are positioned in the butt joint slot, and the second contact part of the signal terminal and the tail end of the ground terminal are electrically connected with the cable.

Due to the adoption of the structure, the utility model has the following beneficial effects:

1. the first electronic component is connected to the fracture of the signal terminal, and the open-circuit signal terminal is connected and conducted together, so that the functions of signal filtering, blocking, optimizing and improving can be achieved.

2. According to the utility model, the first electronic component is arranged on the terminal, so that the arrangement of a capacitor, a resistor or the like on the main board can be omitted, and the circuit design of the main board is optimized.

3. The terminal assembly is connected with the second electronic component between the ground terminal and the adjacent signal terminal, so that the electrical performance of the connector can be further improved and optimized.

Drawings

Fig. 1 is a schematic structural view of the connector of the present utility model.

Fig. 2 is a schematic cross-sectional view of fig. 1.

Fig. 3 is a schematic diagram of the connection of signal terminals to a cable.

Fig. 4 is a schematic cross-sectional view of a signal terminal.

Fig. 5 is a schematic diagram of connection of signal terminals, ground terminals and ground cables.

Fig. 6 is a schematic diagram of a row arrangement of signal terminals and ground terminals.

Fig. 7 is a schematic perspective view of a terminal assembly.

Fig. 8 is a schematic front view of the terminal assembly.

Fig. 9 is a schematic diagram of connection between the terminal assembly and the cable (in which the first electronic component and the second electronic component are hidden).

Fig. 10 is an enlarged schematic view at C of fig. 9.

Fig. 11 is a schematic structural view of a plastic fastener.

Fig. 12 is a schematic view of the second electronic component mounted on the outer side of the plastic fixing member.

Fig. 13 is a schematic left-hand view of the terminal assembly.

Fig. 14 is a schematic view of a structure in which a groove of a terminal assembly is filled with a plastic layer (or a protective cover plate is provided).

Fig. 15 is a partially exploded perspective view of fig. 14.

Fig. 16 is a schematic structural view of a terminal assembly in which a first electronic component is electrically connected to a break through a first chip circuit board.

Fig. 17 is a schematic partial cross-sectional view of fig. 16.

Fig. 18 is a schematic partial structure of a terminal assembly in which a first chip circuit board and a second chip circuit board are provided as an integral board.

Fig. 19 is a schematic view of the hidden plastic fastener in fig. 18.

Fig. 20 is a schematic view of the rear face of the terminal assembly of fig. 19.

Description of main reference numerals:

1: housing, 11: docking slot, 2: cable, 21: signal cable, 22: ground cable, 3: terminal assembly, 4: ground terminal, 41: front end, 42: tail end, 5: signal terminal, 51: body portion, 52: first contact portion, 53: second contact portion, 54: fracture, 6: plastic fastener, 61: groove, 62: through holes, 63: plastic layer, 7: first electronic component, 71: first paster circuit board, 8: second electronic component, 81: second patch circuit board, 82: capacitance, 83: resistance, 9: internal mold, 10: and (5) an integrated plate.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-2, the utility model discloses a connector, which comprises a shell 1, a cable 2 and a terminal assembly 3. One end of the housing 1 is provided with a docking slot 11, and the terminal assembly 3 is fixed in the housing 1. One end of the terminal assembly 3 is disposed in the docking slot 11 for plugging with an external electronic device. The other end of the terminal assembly 3 is electrically connected to the cable 2.

Referring to fig. 7 and 8, the terminal assembly 3 of the present utility model includes a plastic fixing member 6, a plurality of ground terminals 4 and a plurality of signal terminals 5, wherein the signal terminals 5 and the ground terminals 4 are fixed on the plastic fixing member 6.

As shown in fig. 3 to 6, the signal terminal 5 of the present utility model includes a main body portion 53 extending in the first direction. The main body 53 is made of a sheet metal material. As shown in fig. 3, the first direction is the X direction in the figure. The main body 51 has a first contact portion 52 at one end and a second contact portion 53 at the other end for electrical connection with the cable 2. The first contact portion 52 is provided along the main body portion 51 in a bent manner. Since the terminal is made of sheet metal material, the first contact portion 52 has a certain elasticity by bending, and the reliability of plugging with an external electronic device can be improved.

The signal terminals are used to transmit signals in the connector, such as various signals including high-speed signals, low-speed signals, control signals, sideband signals, and the like. As shown in fig. 4, 9 and 10, the main body 51 of the signal terminal 5 is provided with a break 54 in the first direction, and the distance s between the breaks 54 in the first direction is 0.2 to 5mm. The first contact portion 52 is separated from the second contact portion 53 by the break 54, and the first electronic component 7 is electrically connected to the break 54. When the signal terminal is used for transmitting high-speed signals, the first electronic component 7 in this embodiment is a dc blocking capacitor, and the dc blocking capacitor is welded at two ends of the break 54 to connect and conduct the open signal terminals 5 together again, so as to perform the functions of signal filtering and dc blocking. In other embodiments, the first electronic component 7 may also be a resistor, a resistor-capacitor circuit (RC circuit), or the like. In other embodiments, as shown in fig. 16 and 17, the first electronic component 7 may be further electrically connected to the fracture 54 through a first patch circuit board 71. The first chip circuit board 71 may be a PCB or an FPC or an FFC. When the first electronic component 7 needs to be connected to the two signal terminals 5, the first patch circuit board 71 is simultaneously arranged on the two signal terminals 5 to conduct the position of the fracture 54, and two dc blocking capacitors are respectively arranged on the first patch circuit board 71 to respectively block the signals of the two signal terminals 5.

As shown in fig. 5 and 6, a second electronic component 8 is connected between the ground terminal 4 and the adjacent signal terminal 5. For example, the second electronic component 8 in this embodiment is a resistor-capacitor circuit, and the resistor-capacitor circuit includes a second chip circuit board 81, and a capacitor 82 and a resistor 83 disposed on the second chip circuit board 81. The second chip circuit board 81 may be a PCB or an FPC or an FFC. The capacitor 82 and the resistor 83 are integrated on the chip circuit board 81 to form an RC circuit, and then the chip circuit board 81 is soldered to the ground terminal 4 and the signal terminal 5. In other embodiments, the second electronic component 8 may also be a single resistor, capacitor, or the like. As shown in fig. 18 to 20, when the first electronic component 7 is electrically connected to the break 54 through the first chip circuit board 71, the first chip circuit board 71 and the second chip circuit board 81 may be provided as an integrated board 10 for ease of installation and simplification of the structure. Electronic components corresponding to each terminal are correspondingly arranged on the integrated board 10, and then the integrated board 10 is welded on the signal terminal 5 and the ground terminal 4, so that signals of the corresponding terminals are conducted through connection of the integrated board 10, and the functions of signal filtering, blocking, optimizing and improving are achieved.

As shown in fig. 11, each of the signal terminals 5 and the ground terminals 4 is mounted on the plastic fixing member 6 along a first direction (x-direction), and arranged in a row along a second direction (y-direction). The front end 41 of the ground terminal 4, the first contact portion 52 of the signal terminal 5 are disposed in the mating receptacle 11, and the second contact portion 53 of the signal terminal 5 and the tail end 42 of the ground terminal 4 are electrically connected to the cable 2. The terminal arrangement is arranged according to the specification of the PCI Express card, and the ground terminals 4 are arranged between the signal terminals 5 at intervals. For example, the signal terminals 5 may comprise a plurality of pairs of differential signal terminals, and each pair of differential signal terminals is separated by one or more ground terminals 4. By such an arrangement, crosstalk between the signal terminals 5 is reduced, thereby improving signal integrity.

As shown in fig. 8, the plastic fixing member 6 is provided with a groove 61 in the second direction in which the first electronic component 7 is embedded, and the second electronic component 8 may be embedded in the groove 61. In other embodiments, as shown in fig. 12, the second electronic component 8 may be disposed outside the plastic fixing member 6 and on the side where the terminal and the cable 2 are soldered.

As shown in fig. 13, the depth H of the groove 61 is greater than the thickness L of the ground terminal 4 and the signal terminal 5, so that the ground terminal 4 and the signal terminal 5 are located in the groove 61, which facilitates soldering the first electronic component 7 (and the second electronic component 8) after soldering the solder paste on the terminals. In order to better protect the first electronic component 7 and reduce the overall height of the terminal assembly 3, the depth H of the recess 61 is set to be greater than the overall thickness of the terminal and the first electronic component 7 (or the second electronic component 8), i.e. the top end of the first electronic component 7 is located in the recess 61, i.e. the top end P1 is lower than P2. The cross-sectional shape of the recess 61 is trapezoidal, and the dimension a of the opening end of the recess 61 in the first direction is larger than the dimension b of the bottom end, so that the first electronic component 7 (and the second electronic component 8) are mounted in the recess 61.

As shown in fig. 11, a through hole 62 is provided in the groove 61 corresponding to the position of the break 54 of the signal terminal 5, and the through hole 62 penetrates the bottom of the groove 61. The provision of the through hole 62 facilitates cutting away the signal terminal 5 to form the fracture 54.

As shown in fig. 14, a plurality of grooves 61 may be provided according to the distribution of the first electronic components 7 (or the second electronic components 8). Referring to fig. 15, in order to protect the first electronic component 7 and/or the second electronic component 8 in the groove 61, a plastic layer 63 covering the first electronic component and/or the second electronic component is filled in the groove 61, and the plastic layer 63 completely covers the electronic component, thereby realizing a sealing effect. In other embodiments, a protective cover may be provided over the recess 61 to seal the first electronic component 7 and/or the second electronic component 8 within the recess 61.

The production process of the connector of the utility model is as follows:

1. the signal terminals 5 and the ground terminals 4 are first formed by a stamping process.

2. The signal terminal 5 and the ground terminal 4 are arranged in the cavity of the injection mold as inserts by adopting the process of insert molding of the injection mold, and the plastic fixing piece 6 is molded by injecting glue, so that the signal terminal 5, the ground terminal 4 and the plastic fixing piece 6 are molded into a whole by adopting the process.

In other embodiments, the molding compound fixture 6 may be provided to include an upper fixture and a lower fixture, and the signal terminal 5 and the ground terminal 4 may be assembled between the upper fixture and the lower fixture.

3. As shown in fig. 10, the shearing blade cuts a small section of the signal terminal 5 at the middle portion of the plastic holder 6 through the through hole 62 to form the break 54 so that the signal terminal 5 becomes separated two parts.

4. The solder paste is applied to the portion of the recess corresponding to the break 54 to be soldered, and the solder paste is applied to the portion of the second electronic component to be soldered between the signal terminal 5 and the ground terminal 4.

5. The first electronic component 7 is soldered to the break 54. The second electronic component 8 is welded between the signal terminal 5 and the ground terminal 4 in the groove 61, or the second electronic component 8 is welded on the side where the signal terminal 5 or the ground terminal 4 is electrically connected with the cable 2 after the plastic fixing member 6.

6. Glue is filled in the groove 61 through plastic injection or glue injection technology, and the glue is solidified to form a plastic layer 63 which is wrapped around the first electronic component or/and the second electronic component. The terminal assembly 3 is manufactured.

7. The signal cable 21 in the cable 2 is soldered to the second contact portion 53 of the signal terminal 5, and the ground cable 22 is soldered to the tail end 42 of the ground terminal 4.

8. The two sets of terminal assemblies 3 are mounted into the housing 1 of the connector and then the inner mold 9 is injection molded at the welding location of the terminal assemblies 3 and the cable 2, i.e. the complete connector is formed.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.

Claims (17)

1. A signal terminal, characterized in that: the cable comprises a main body part extending in a first direction, wherein one end of the main body part is a first contact part, and the other end of the main body part is a second contact part used for being electrically connected with a cable; the main body portion is provided with a fracture in a first direction, the fracture separating the first contact portion from the second contact portion;

the electronic device further comprises a first electronic component, wherein the first electronic component is electrically connected to the fracture, or the first electronic component is electrically connected to the fracture through a first patch circuit board.

2. The signal terminal of claim 1, wherein: the first electronic component is a direct current blocking capacitor.

3. The signal terminal of claim 1, wherein: the first patch circuit board is a PCB or an FPC or an FFC.

4. The signal terminal of claim 1, wherein: the distance of the fracture in the first direction is 0.2-5.0 mm.

5. The signal terminal of claim 1, wherein: the main body part is made of sheet metal materials, and the first contact part and the main body part are bent.

6. A terminal assembly, characterized in that: comprising a plurality of ground terminals and a plurality of signal terminals according to any one of claims 1 to 5, the signal terminals being arranged in rows with the ground terminals in the second direction, and the ground terminals being arranged at intervals between the signal terminals.

7. The terminal assembly of claim 6, wherein: the signal terminal and the ground terminal are fixed on the plastic fixing piece.

8. A terminal assembly according to claim 6 or 7, wherein: and a second electronic component is connected between the ground terminal and the adjacent signal terminal.

9. The terminal assembly of claim 8, wherein: the second electronic component is a resistor-capacitor circuit, and the resistor-capacitor circuit comprises a second patch circuit board, and a capacitor and a resistor which are arranged on the second patch circuit board.

10. The terminal assembly of claim 9, wherein: the second patch circuit board is a PCB or an FPC or an FFC.

11. A terminal assembly according to claim 9 or 10, wherein: the first electronic component is electrically connected to the fracture through the first patch circuit board, and the first patch circuit board and the second patch circuit board are arranged in a split mode or are arranged as an integrated board.

12. The terminal assembly of claim 8, wherein: each signal terminal and each ground terminal are arranged on the plastic fixing piece along the first direction and are arrayed on the plastic fixing piece in a row along the second direction; the plastic fixing piece is provided with a groove along the second direction, a through hole is formed in the position, corresponding to the fracture position of the signal terminal, of the groove, and the through hole penetrates through the bottom of the groove.

13. The terminal assembly of claim 12, wherein: the depth of the groove is larger than the thickness of the ground terminal and the signal terminal.

14. The terminal assembly of claim 13, wherein: the groove is trapezoidal, and the size of the opening end of the groove along the first direction is greater than that of the bottom end.

15. The terminal assembly of claim 12, wherein: the first electronic component is embedded in the groove, and the top end of the first electronic component is positioned in the groove;

the second electronic component is embedded in the groove, and the top end of the second electronic component is positioned in the groove; or the second electronic component is positioned outside the plastic fixing piece and is arranged at one side of the signal terminal or the ground terminal electrically connected with the cable.

16. The terminal assembly of claim 15, wherein: the groove is provided with a protective cover plate for sealing the first electronic component or/and the second electronic component in the groove;

or, the groove is filled with a plastic layer for coating the first electronic component or/and the second electronic component.

17. A connector, characterized in that: the connector comprises a shell, a cable and the terminal assembly according to any one of claims 6 to 16, wherein a butt joint slot is formed in one end of the shell, the terminal assembly is fixed in the shell, the first contact part of the signal terminal and the front end of the ground terminal are positioned in the butt joint slot, and the second contact part of the signal terminal and the tail end of the ground terminal are electrically connected with the cable.