CN217158663U - USB4 coaxial wire weaving welding structure - Google Patents

Abstract

The utility model discloses a USB4 coaxial wire weaving welding structure, which comprises a USB4 connector, a PCB board and a coaxial cable; the front end of this PCB board is fixed and turn-on connection with the rear end of USB4 connector, and the surface of PCB board is provided with a plurality of connection pads and two ground connection pads, and the rear end both sides of PCB board all are formed with the chamfer recess, the equal cladding copper foil of rear end both sides of PCB board. Set up the chamfer through the side at the PCB board sunken, and cooperate the cladding copper foil, make the welding weaving layer go up tin more easily, improve the welding ageing, both sides welding weaving layer time spent reduces, the weaving layer heat conduction reduces, scald the insulating probability of heart yearn and reduce, after the welding weaving layer, can improve the signal to the impedance, improve the bad problem of finished product GND pressure drop, furthermore, the tin point is arranged in the chamfer is sunken, do not bulge PCB flange reason, improve the equipment iron-clad and strut the problem, make follow-up thickness size accord with the requirement of association 6.5mm Max behind the external mold of moulding plastics, satisfy the needs that use.

Description

USB4 coaxial wire weaving welding structure

Technical Field

The utility model belongs to the technical field of the connector technique and specifically relates to indicate a welded structure is woven to USB4 coaxial line.

Background

USB4 is known under the full name Universal Serial Bus Generation 4. The USB interface promulgates USB 1.0 specification in 1996 with transmission speeds supporting 1.5 Mbps at low speed and 12 Mbps at full speed, followed by 480 Mbps, 5Gbps, 10Gbps, 20Gbps, etc., and promulgates the latest generation USB4 specification in 2019 at 9 months with support for 20Gbps and 40 Gbps.

The USB4 has three key points of new functions:

the USB4 only adopts a USB Type-C connector, and USB4 signals adopt dual-channel transmission; the conventional connector such as USB Type-A or Micro-B only supports single channel transmission, but cannot support USB 4.

The USB supports 40G (20Gbps x2) with the fastest transmission speed, and can simultaneously transmit the DisplayPort video. The overall speed and performance of the USB4 architecture may be dynamically shared, aiming to combine multiple protocols into a single physical interface.

3. Downward compatibility with USB 2.0 and USB 3.2 and support Thunderbolt 3.

USB4 connector and cable focus:

USB4 employs USB Type-C connectors only.

The length of the passive Cable which can support the USB4 Cable passive Cable is reduced from 1 meter of USB 3.2 Gen2 to 0.8 meter of USB4 Gen 3.

3. If longer cables are required, such as for large screen connections or for VR applications, active cables can be used. The USB4 active cable is a cable containing Repeater elements (such as active elements like Re-timer and Re-driver), and an optical fiber cable. The length of the active cable which can be supported is 5 meters at most.

After the current USB4 connector is welded with a cable, the welding weaving tin points are arranged on the side face and the front face of a PCB, so that a part of the assembled iron shell has a convex hull, the thickness dimension of the assembled iron shell after injection molding of an outer mold exceeds 6.5mm Max required by the association, and the use requirement cannot be met. Therefore, there is a need to develop a solution to the above problems.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a USB4 coaxial wire weaving welding structure, in which after the cable is welded, the tin point is located in the chamfer recess on the side of the PCB board, and the thickness dimension after the outer mold is injection molded meets the requirement of 6.5mm Max in association.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a welding structure is woven to USB4 coaxial line, including USB4 connector, PCB board and coaxial cable; the front end of the PCB is fixed and in conductive connection with the rear end of the USB4 connector, the surface of the PCB is provided with a plurality of connecting pads and two grounding pads, chamfer grooves are formed on two sides of the rear end of the PCB, the two grounding pads are respectively positioned on the sides of two chamfer depressions, copper foils are coated on two sides of the rear end of the PCB, and the two copper foils are both positioned in the chamfer depressions and are in contact with the corresponding grounding pads; this coaxial cable is including a plurality of heart yearns and the weaving layer of cladding outside the heart yearn, and the front end of a plurality of heart yearns all stretches out there is the conductor, this conductor and the connection pad welded fastening that corresponds and switch on the connection, and the weaving layer supports on the ground connection pad that corresponds and soldering tin is formed with the tin point, and this tin point is connected copper foil, weaving layer and ground connection pad and is fixed together.

Preferably, the depth of the chamfer recess is 0.3 mm.

Preferably, the length of the chamfer recess is 2.1 mm.

Preferably, the plurality of connection pads are arranged on the front side of the grounding pad at intervals in the transverse direction.

As a preferred scheme, the upper surface and the lower surface of the PCB are provided with the plurality of connecting bonding pads and the two grounding bonding pads, and the core wires are arranged in two groups up and down.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:

set up the chamfer through the side at the PCB board and cave in, and cooperate the cladding copper foil, make the welding weaving layer tin more easily, improve the welding ageing, both sides welding weaving layer time spent reduces, the weaving layer heat conduction reduces, scald the insulating probability of heart yearn and reduce, behind the welding weaving layer, can improve signal pair impedance, improve the bad problem of finished product GND pressure drop, and, the tin point is located the chamfer and caves in, do not bulge PCB flange reason, improve the equipment iron-clad and strut the problem, make follow-up mould plastics the requirement that the thickness size accords with 6.5mm Max of Association behind the external mold, satisfy the needs that use.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a partial front view of the preferred embodiment of the present invention;

fig. 3 is a side view of the PCB board according to the preferred embodiment of the present invention.

The attached drawings indicate the following:

10. USB4 connector 11, welding foot

20. PCB board 21, connection pad

22. Grounding pad 23 and copper foil

201. Chamfer recess 30, coaxial cable

31. Core wire 311 and conductor

32. Braid 40, tin dots.

Detailed Description

Referring to fig. 1 to 3, specific structures of the preferred embodiment of the present invention are shown, including the USB4 connector 10, the PCB 20 and the coaxial cable 30.

The rear end of the USB4 connector 10 horizontally extends backward to form two rows of soldering pins 11, which are arranged up and down.

The front end of the PCB 20 is fixed and conductively connected with the rear end of the USB4 connector 10, the surface of the PCB 20 is provided with a plurality of connecting pads 21 and two grounding pads 22, both sides of the rear end of the PCB 20 are formed with chamfer grooves 201, the two grounding pads 22 are respectively positioned beside the two chamfer recesses 201, both sides of the rear end of the PCB 20 are coated with copper foils 23, and both copper foils 23 are positioned in the chamfer recesses 201 and are contacted with the corresponding grounding pads 22; in this embodiment, the soldering pins 11 are attached to the upper and lower surfaces of the PCB 20 and soldered and connected electrically; the upper and lower surfaces of the PCB board 20 are provided with the plurality of connection pads 21 and two ground pads 22; the plurality of connection pads 21 are arranged laterally spaced apart on the front side of the ground pad 22. The depth of the chamfer recess 201 is 0.3mm, the length of the chamfer recess 201 is 2.1mm, the width of the rear end of the PCB board 20 is 8.5mm, and the thickness of the PCB board 20 is 0.8 mm.

The coaxial cable 30 includes a plurality of core wires 31 and a braid 32 coated outside the core wires 31, the front ends of the core wires 31 all extend out of a conductor 311, the conductor 311 is welded and fixed with the corresponding connection pad 21 and is connected to the connection pad, the braid 32 is pressed against the corresponding ground pad 22 and is formed with a tin spot 40 by soldering, and the copper foil 23, the braid 32 and the ground pad 22 are connected and fixed together by the tin spot 40. In the present embodiment, the core wires 31 are provided in two sets disposed one above the other.

Detailed description the weld assembly process of the present embodiment is as follows:

firstly, the front end of the PCB 20 is fixed and soldered to the rear end of the USB4 connector 10, then the conductors 311 of the core wires 31 of the coaxial cable 30 are soldered to the corresponding connection pads 21, the braid 32 is soldered to the corresponding ground pads 22, and the solder dots 40 are formed by soldering, so that the copper foil 23, the braid 32 and the ground pads 22 are connected and fixed together by the solder dots 40, at this time, the solder dots 40 are located in the chamfered recesses 201 on the side surfaces of the PCB 20, and the thickness dimension after the injection molding of the outer mold meets the requirement of 6.5mm Max of the association.

The utility model discloses a design focus lies in: set up the chamfer through the side at the PCB board and cave in, and cooperate the cladding copper foil, make the welding weaving layer tin more easily, improve the welding ageing, both sides welding weaving layer time spent reduces, the weaving layer heat conduction reduces, scald the insulating probability of heart yearn and reduce, behind the welding weaving layer, can improve signal pair impedance, improve the bad problem of finished product GND pressure drop, and, the tin point is located the chamfer and caves in, do not bulge PCB flange reason, improve the equipment iron-clad and strut the problem, make follow-up mould plastics the requirement that the thickness size accords with 6.5mm Max of Association behind the external mold, satisfy the needs that use.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims (5)

1. The utility model provides a welding structure is woven to USB4 coaxial line which characterized in that: the USB cable connector comprises a USB4 connector, a PCB and a coaxial cable; the front end of the PCB is fixed and in conductive connection with the rear end of the USB4 connector, the surface of the PCB is provided with a plurality of connecting pads and two grounding pads, chamfer grooves are formed on two sides of the rear end of the PCB, the two grounding pads are respectively positioned on the sides of two chamfer depressions, copper foils are coated on two sides of the rear end of the PCB, and the two copper foils are both positioned in the chamfer depressions and are in contact with the corresponding grounding pads; this coaxial cable is including a plurality of heart yearns and the weaving layer of cladding outside the heart yearn, and the front end of a plurality of heart yearns all stretches out there is the conductor, this conductor and the connection pad welded fastening that corresponds and switch on the connection, and the weaving layer supports on the ground connection pad that corresponds and soldering tin is formed with the tin point, and this tin point is connected copper foil, weaving layer and ground connection pad and is fixed together.

2. The USB4 coaxial wire braid welded structure of claim 1, wherein: the depth of the chamfer recess is 0.3 mm.

3. The USB4 coaxial wire braid welded structure of claim 1, wherein: the length of the chamfer recess is 2.1 mm.

4. The USB4 coaxial wire braid welded structure of claim 1, wherein: the plurality of connection pads are arranged on the front side of the grounding pad at intervals in the transverse direction.

5. The USB4 coaxial wire braid welded structure of claim 1, wherein: the upper surface and the lower surface of the PCB are provided with the connecting pads and the two grounding pads, and the core wires are arranged in two groups up and down.

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