WO2023173435A1

WO2023173435A1 - Data transmission device

Info

Publication number: WO2023173435A1
Application number: PCT/CN2022/081806
Authority: WO
Inventors: 成海华
Original assignee: 深圳市威通电子有限公司
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2023-09-21
Also published as: CN219040948U; CN218827940U; CN218677853U; CN116171510A

Abstract

The present invention provides a data transmission device, comprising a cable (11), a connector (21), a shielding housing (23), and a PCB (30). The cable (11) comprises a plurality of wire cores; the connector (21) comprises a plurality of terminals; the PCB (30) is connected in series between the plurality of terminals and the plurality of wire cores; the shielding housing (23) surrounds the PCB (30); two ends of the shielding housing (23) are respectively connected to the connector (21) and the cable (11). The data transmission device provided in the present invention comprises a PCB and a shielding housing surrounding the PCB, and the two ends of the shielding housing are connected to the connector and the cable, respectively; thus, the anti-interference level of the data transmission device is improved.

Description

a data transmission device

Technical field

The invention belongs to the field of digital accessories, and more specifically, designs a data transmission device.

Background technique

The USB C interface has become more and more widely used. The USB C connector has 24 terminals, 12 on each side. The 12 terminals on one side are usually named A1~A12, and the 12 terminals on the other side are usually named B1~B12. The USB C connector enables USB C to be plugged in from both front and back sides by reasonably defining the functions and functions of each terminal.

With the continuous development of USB C technology, higher requirements have been put forward for the miniaturization and high speed of USB C connectors and cables. For example, the latest transmission speed requirement is 40Gbps. These higher requirements have placed higher demands on product design and manufacturing. Traditional design and manufacturing cannot guarantee relevant technical indicators or a high yield rate. Therefore, an improved solution is urgently needed.

technical problem

One purpose of the invention is to improve the anti-interference level of the data transmission device.

Technical solutions

To this end, the present invention provides a data transmission device, including a cable, a connector, a shielded shell and a PCB; the cable has a number of cores, the connector has a number of terminals, and the PCB is connected in series to the Between a plurality of terminals and the plurality of wire cores; the shielding shell surrounds the PCB, and the two ends of the shielding shell are connected to the connector and the cable respectively.

In a preferred solution created by the present invention, the PCB includes a first grounding component, the first grounding component includes a first grounding part, a second grounding part and a third grounding part, the first grounding part and the third grounding part The ground parts are respectively located on the front and back of the PCB, and the second ground part is located on the first side of the PCB and connected in series between the first ground part and the third ground part.

In a preferred solution created by the present invention, the plurality of wire cores include a first group of wire cores and a second group of wire cores, and the first group of wire cores and the second group of wire cores are respectively located on the front and back of the PCB. , the first ground portion is electrically connected to the shielding layer of the first corresponding line core located on the front side of the PCB, and the third grounding portion is electrically connected to the shielding layer of the second corresponding line core located on the back side of the PCB.

In a preferred solution created by the present invention, the first grounding part, the second grounding part and the third grounding part of the first grounding member are respectively electrically connected to corresponding positions on the inner wall of the shielding shell. In a preferred solution created by the present invention, the PCB includes a second grounding component, the second grounding component includes a fourth grounding part, a fifth grounding part and a sixth grounding part, the fourth grounding part and the sixth grounding part The ground parts are respectively located on the front and back of the PCB, and the fifth ground part is located on the second side of the PCB and connected in series between the fourth ground part and the sixth ground part; the fourth ground part The third grounding portion is electrically connected to the shielding layer of the third corresponding wire core located on the front side of the PCB, and the third ground portion is electrically connected to the shielding layer of the fourth corresponding wire core located on the back side of the PCB.

In a preferred solution created by the present invention, the fourth, fifth and sixth ground parts of the second ground member are electrically connected to corresponding positions on the inner wall of the shielding casing respectively.

In a preferred solution created by the present invention, it also includes a cable clamp installed on the end of the cable, and the plurality of wire cores include a first group of wire cores and a second group of wire cores; the remote connector of the PCB The end is provided with an outwardly extending connecting portion, the connecting portion is inserted into the cable clamp, and the first group of wire cores and the second group of wire cores are installed on both sides of the cable clamp and connected respectively. to the front and back of the PCB.

In a preferred solution created by the present invention, the cable clamp includes a through-hole first wire trough, which runs through the height direction of the cable clamp for the corresponding wire core of the cable. Passing through; the cable clamp also includes a first through hole connected to the first wire groove from the surface of the cable clamp in the thickness direction, the first through hole is used to place adhesive through the first wire The wire core of the slot is fixed to the first wire slot.

In a preferred solution created by the present invention, the cable arrangement clamp includes a first wire frame and a second wire frame, and the first wire frame and the second wire frame are close together; the first wire frame and the second wire frame A receiving portion is formed therebetween, and the receiving portion is used to be combined with the connecting portion; the first group of wire cores is installed on the side of the first wire frame away from the second wire frame, and the third wire core is The two sets of wire cores are installed on the side of the second wire frame away from the first wire frame.

In a preferred solution created by the present invention, the first wire frame and the second wire frame are brought into contact with each other during the assembly process through buckle structures at both ends in the length direction, and are fixedly connected to the plurality of wire cores. After the PCB is assembled, the excess portion of the length of the first wire frame and the second wire frame is cut off.

beneficial effects

The data transmission device created by the invention has a PCB and a shielding shell surrounding the PCB. The two ends of the shielding shell are connected to connectors and cables respectively, which improves the anti-interference level of the data transmission device.

Description of the drawings

Figure 1 is a schematic diagram of a data transmission device provided by an embodiment of the present invention;

Figure 2 is an exploded schematic diagram of the data transmission device shown in Figure 1;

Figures 3 and 4 are schematic views of the connector of the data transmission device shown in Figure 1 from different angles;

Figures 5 to 8 are schematic views of the four sides of the connector shown in Figure 4;

Figure 9 is a schematic diagram of the connection between the connector and the cable shown in Figure 3;

Figure 10 is a schematic diagram of the assembly process of the connector shown in Figure 9 and the cable clamp at the cable end;

FIG. 11 is an exploded schematic diagram of the cable clamp shown in FIG. 10 .

Embodiments of the invention

Referring to Figure 1, the data transmission device 100 provided in this embodiment is a USB C data line. The USB C data line is an ultra-high-speed data line with a transmission speed of up to 40Gbps; however, the invention is not limited to USB C data lines. Not limited to specific transmission speeds.

The data transmission device 100 includes a cable 11, a connector 21 and a shielding shell 23. The cable 11 has several wire cores (not shown in FIG. 1 ) inside, and the connector 21 is provided with a number of terminals (not shown in FIG. 1 ), and the corresponding terminals are electrically connected to the corresponding wire cores. The shielding shell 23 is located between the cable 11 and the connector 21 . The two ends of the shielding shell 23 are respectively connected to the end of the cable 11 near the connector 21 and the end of the connector 21 near the cable 11 . The shielding shell 23 is formed by rolling a conductive sheet material. Inverted trapezoid-shaped bayonet 25 is formed on both sides of the bending joint of the sheet to achieve locking after bending. The end of the sheet near the cable 11 is also provided with rivet claws 26 for supporting or surrounding the cable 11 to confine the cable 11

Referring to FIG. 2 , the data transmission device 100 further includes a PCB 30 , which is connected in series between a plurality of terminals of the connector 21 and a plurality of wire cores of the cable 11 . Specifically, a plurality of first welding positions 32 and a plurality of second welding positions 33 are provided at both ends of the PCB 30 , which are respectively connected to corresponding terminals of the connector 21 and corresponding wire cores of the cable 11 . The shielding shell 23 surrounds the PCB 30 and shields the PCB 30 and the terminals and wire cores connected to the PCB 30, especially grounding shielding, to improve the anti-crosstalk capability.

Referring to FIGS. 3 to 8 , the second soldering positions 33 include a plurality of soldering positions 33B distributed on the front side of the PCB 30 and a plurality of soldering positions 33A distributed on the back side of the PCB 30 . The plurality of wire cores of the cable 11 include a first group of wire cores and a second group of wire cores. The first group of wire cores and the second group of wire cores are respectively located on the front and back of the PCB 30 to be connected to the corresponding soldering positions 33B, 33B, and 33B, respectively. Welding position 33A.

The second welding position 33 also includes a first grounding member 34 , a second grounding member 35 and a third grounding member 36 . The first ground part 34 includes a first ground part, a second ground part and a third ground part. The first ground part and the third ground part are respectively located on the PCB. 30 , the second ground part is located on the first side of the PCB 30 and is connected in series between the first ground part and the third ground part. The second ground part 35 includes a fourth ground part, a fifth ground part and a sixth ground part. The fourth ground part and the sixth ground part are respectively located on the PCB. 30 , the fifth ground part is located on the second side of the PCB 30 and is connected in series between the fourth ground part and the sixth ground part. The first grounding member 34 and the second grounding member 35 of this structure realize the closed-loop connection of the grounding point on the front of the PCB 30 and the grounding point on the back of the PCB 30 to form a 360-degree grounding, further improving the shielding effect.

Preferably, notches are provided at corresponding positions on the first side and the second side of the PCB 30 to respectively set and fix the above-mentioned first grounding member 34 and second grounding member 35.

Referring to FIG. 4 , a third grounding member 36 is provided on the back of the PCB 30 for additional shielding of some terminals. For example, among the A1~A12 terminals of USB C, A6 and A7 are idle, and the third grounding member 36 can be provided as a dedicated grounding shield for A6 and A7. For example, the terminals A6 and A7 are electrically connected to the shielding shell 23 through the third grounding member 36 to achieve grounding.

Referring to FIG. 9 , the data transmission device 100 further includes a cable clamp 50 installed to the end of the cable 11 . The far connector 21 end of the PCB 30 is provided with outwardly extending connecting portions 38 and 39 , and the connecting portions 38 and 39 are inserted into the cable clip 50 . The cable clip 50 is provided with receiving portions 58 and 59 for combination with the connecting portions 38 and 39 respectively. PCB 30 is located between the first group of wire cores and the second group of wire cores. The first group of wire cores and the second group of wire cores of the cable 11 are installed on both sides of the cable clamp 50 and connected to the PCB respectively. 30 front and back.

The first grounding portion of the first grounding member 34 is electrically connected to the shielding layer 13 of the first corresponding wire core 12 located on the front side of the PCB 30 , and the third grounding portion of the first grounding member 34 is electrically connected to the second corresponding wire core located on the back side of the PCB 30 The shielding layer 14 of 15 is electrically connected. The fourth grounding portion of the second grounding member 35 is electrically connected to the shielding layer 17 of the third corresponding wire core 16 located on the front side of the PCB 30 , and the sixth grounding portion of the second grounding member 35 is electrically connected to the fourth corresponding wire core located on the back side of the PCB 30 18's shield is electrically connected.

Preferably, the first grounding part, the second grounding part (that is, the part of the first grounding part 34 located on the first side of the PCB 30 ) and the third grounding part of the first grounding member 34 respectively correspond to the inner wall of the shielding shell 23 The fourth grounding part, the fifth grounding part of the second grounding part 35 (that is, the part of the second grounding part 35 located on the second side of the PCB 30) and the sixth grounding part are respectively connected with the inner wall of the shielding shell 23. Corresponding positions are electrically connected. To form a 360-degree grounding, further improving the shielding effect.

Referring to Figures 9 and 10, the cable clamp 50 includes a plurality of through-hole first wire slots 55. The first wire slots 55 run through the height direction of the cable clamp 50 for the corresponding wire cores of the cable, such as the wire core 12, to pass through. . The cable clamp 50 also includes a first through hole 57 connected to the first wire slot 55 from the surface of the cable clamp 50 in the thickness direction. The first through hole 57 is used to place adhesive to pass through the first wire slot 55 to fix the wire core. to the first trunking 55.

Referring to FIGS. 10 and 11 , the cable clamp 50 includes a first wire frame 61 and a second wire frame 71 , and the first wire frame 61 and the second wire frame 71 are close together. The first set of wire cores is installed on the side of the first wire frame 61 away from the second wire frame 71 , and the second group of wire cores is installed on the side of the second wire frame 71 away from the first wire frame 61 . Receiving portions 58 and 59 are formed between the first wire frame 61 and the second wire frame 71 . In this embodiment, the surface of the first wire frame 61 facing the second wire frame 71 forms a first recess 68 and a second recess 69 at corresponding positions, and the surface of the second wire frame 71 facing the first wire frame 61 forms a first recess 68 at a corresponding position. The three recessed positions 78 and the fourth recessed position 79 , the first recessed position 68 and the third recessed position 78 together form the above-mentioned receiving part 58 , and the second recessed position 69 and the fourth recessed position 79 together form the above-mentioned receiving part 59 . Understandably, the receiving portions 58 and 59 can also be formed independently by the first wire frame 61 or the second wire frame 71; or, one of the first wire frame 61 and the second wire frame 71 can independently form the receiving portion 58, wherein The other one independently forms the receiving portion 59 .

During the assembly process, the first wire frame 61 and the second wire frame 71 are abutted together through the snap structures at both ends in the length direction. In this embodiment, one of the first wire frame 61 and the second wire frame 71 is provided with a protruding latching position 64, and the other one is provided with a through hole as the bayonet 74, and the latching position 64 is inserted into the bayonet 74. The first wire frame 61 and the second wire frame 71 are bonded together.

After the wire core of the cable 11 is fixedly connected to the PCB 30, the excess portion of the length of the first wire frame 61 and the second wire frame 71 is cut off, so that the length direction of the first wire frame 61 and the second wire frame 71 is in line with the shielding shell. Size 23 matches.

In one embodiment, a method of manufacturing the data transmission device includes the following steps:

S11. Construct the first wire frame 61 and the second wire frame 71, and put the first wire frame 61 and the second wire frame 71 together through the snap structures at both ends in the length direction;

S13. Install the first set of wire cores of the cable 11 into the wire trough on the side of the first wire frame 61 away from the second wire frame 71, and install the second group of wire cores of the cable 11 into the wire trough on the side of the second wire frame 71 away from the second wire frame 71. A wire trough on one side of the frame 61;

S15. Fixedly connect the first group of wire cores and the second group of wire cores to the front and back of the PCB 30 respectively; the end of the PCB away from the cable is connected to a connector 21;

S17. Cut off the excess parts in the length direction of the first wire frame 61 and the second wire frame 71, so that the length directions of the first wire frame 61 and the second wire frame 71 after cutting conform to the preset length;

S19. Assemble the shielding shell 23 so that the shielding shell 23 surrounds the PCB 30, and the two ends of the shielding shell 23 are connected to the connector 21 and the cable 11 respectively.

Preferably, in the method of manufacturing the data transmission device, before step S19, the PCB 30 is provided with a first grounding member 34. The first grounding member 34 includes a first grounding part, a second grounding part and a third grounding part. The first grounding part and the third grounding part are respectively located on the front and back of the PCB 30. The second grounding part 30 The first ground portion is located on the first side of the PCB 30 and is connected in series between the first ground portion and the third ground portion. More preferably, step S19 also includes electrically connecting the first grounding part, the second grounding part and the third grounding part of the first grounding member 34 to corresponding positions on the inner wall of the shielding shell 23 respectively.

Preferably, in the method of manufacturing the data transmission device, before step S19, the PCB 30 includes a second ground member 35. The second ground member 35 includes a fourth ground portion, a fifth ground portion and a sixth ground portion. The fourth ground portion and the sixth ground portion are respectively located on the front and back of the PCB 30. The fifth ground portion is located on the second side of the PCB 30 and is connected in series between the fourth ground portion and the sixth ground portion. More preferably, step S19 also includes electrically connecting the fourth, fifth and sixth ground parts of the second ground member 35 to corresponding positions on the inner wall of the shielding shell 23 respectively.

For those of ordinary skill in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be determined by the appended claims.

Claims

A data transmission device, characterized by including a cable (11), a connector (21), a shielding shell (23) and a PCB (30); the cable (11) has several wire cores, and the connector (21) It has several terminals, and the PCB (30) is connected in series between the terminals and the wire cores; the shielding shell (23) surrounds the PCB (30), and the shielding shell (23) ) are respectively connected to the connector (21) and the cable (11).
The data transmission device according to claim 1, characterized in that the PCB (30) includes a first grounding member (34), and the first grounding member (34) includes a first grounding part, a second grounding part and The third ground part, the first ground part and the third ground part are respectively located on the front and back of the PCB (30), and the second ground part is located on the first side of the PCB (30) and connected in series. between the first ground part and the third ground part.
The data transmission device according to claim 2, wherein the plurality of wire cores include a first group of wire cores and a second group of wire cores, and the first group of wire cores and the second group of wire cores are respectively located on the On the front and back sides of the PCB (30), the first grounding portion is electrically connected to the shielding layer of the first corresponding wire core located on the front side of the PCB (30), and the third grounding portion is electrically connected to the shielding layer located on the front side of the PCB (30). The shielding layer of the second corresponding wire core on the back is electrically connected.
The data transmission device according to claim 3, characterized in that the first grounding part, the second grounding part and the third grounding part of the first grounding member (34) are respectively connected with the inner wall of the shielding shell (23). The corresponding positions are electrically connected.
The data transmission device according to claim 3, characterized in that the PCB (30) includes a second grounding piece (35), the second grounding piece (35) includes a fourth grounding part, a fifth grounding part and The sixth ground part, the fourth ground part and the sixth ground part are respectively located on the front and back of the PCB (30), and the fifth ground part is located on the second side of the PCB (30) and connected in series. between the fourth grounding part and the sixth grounding part; the fourth grounding part is electrically connected to the shielding layer of the third corresponding wire core located on the front side of the PCB (30), and the third grounding part is electrically connected to the The shielding layer of the fourth corresponding wire core on the back of the PCB (30) is electrically connected.
The data transmission device according to claim 5, characterized in that the fourth, fifth and sixth ground parts of the second ground member (35) are respectively connected with the inner wall of the shielding shell (23). The corresponding positions are electrically connected.
The data transmission device according to claim 1, further comprising a cable clamp (50) installed to the end of the cable, the plurality of wire cores including a first group of wire cores and a second group of wire cores. ; The far connector (21) end of the PCB (30) is provided with outwardly extending connecting portions (38, 39), and the connecting portions (38, 39) are inserted into the cable clamp (50), The first group of wire cores and the second group of wire cores are respectively installed on both sides of the cable clamp (50) and connected to the front and back of the PCB (30) respectively.
The data transmission device according to claim 7, characterized in that the cable clamp (50) includes a through-hole first wire trough (55), and the first wire trough (55) penetrates the cable The height direction of the clamp (50) is for the corresponding wire core of the cable to pass through; the cable clamp (50) also includes a surface connected to the first wire trough along the thickness direction from the surface of the cable clamp (50) (55) first through hole (57), the first through hole (57) is used to place adhesive through the wire core of the first wire trough (55) to be fixed to the first wire trough (55) .
The data transmission device according to claim 8, characterized in that the cable clamp (50) includes a first wire frame (61) and a second wire frame (71), the first wire frame (61) and the second wire frame (71). The two wire frames (71) are close together; a receiving portion (58, 59) is formed between the first wire frame (61) and the second wire frame (71), and the receiving portion (58, 59) is used to connect the The connecting parts (38, 39) are combined; the first set of wire cores is installed on the side of the first wire frame (61) away from the second wire frame (71), and the second group of wire cores is installed to the side of the second wire frame (71) away from the first wire frame (61).
The data transmission device according to claim 9, characterized in that, during the assembly process, the first wire frame (61) and the second wire frame (71) are brought together through the buckle structures at both ends in the length direction, And after the plurality of wire cores are fixedly connected to the PCB (30), excess portions of the lengths of the first wire frame (61) and the second wire frame (71) are cut off.