Cable assembly

Abstract

The present application is a cable assembly, which comprises at least one first cable module, each of the first cable module comprising a seat, a plurality of signal terminals, a grounding member, a plurality of cables and a shielding member fixed on the seat. The seat is provided with a bottom surface, opposite front and back surfaces, the signal terminals comprise wire connecting portions downwardly penetrating the bottom surface of the seat and board connecting portions exposed on the front surface of the seat, the grounding member is exposed on the front surface of the seat, the cables comprise central conductors and shielding layers, the central conductors of the cables are mechanically and electrically connected to the wire connecting portions of the signal terminals, and the shielding layers of the cables are mechanically and electrically connected to the grounding member; and the shielding member is arranged on the back surface of the seat. The shielding member cooperates with the grounding member to improve the electrical performance of the cable assembly.

Description

[Technical Field]

[0001] This invention relates to a cable assembly that can be directly connected to a circuit board. [Background Technology]

[0002] US Patent Application US2020 / 0366017 discloses a connection system including a circuit board and a cable assembly. The circuit board has a grounding plate and a signal plate on its upper surface. The cable assembly includes cable modules and a housing that carries the cable modules. The cable module includes multiple cables, a ground plane connecting the cable shielding layer, and signal terminals connecting the cable cores. The ground plane includes grounding fingers for contacting the grounding plate of the circuit board. Each circuit board's signal terminal has a terminal for connecting to the cable core and a signal finger for contacting the signal plate of the circuit board. The housing has a mounting end that is mounted on the circuit board and has terminal channels for accommodating the grounding fingers and signal fingers. However, there is a desire to design a connection system more suitable for high-frequency transmission. [Summary of the Invention]

[0003] The technical problem to be solved by the present invention is to provide a cable assembly that can provide high-frequency electrical performance.

[0004] To solve the above problems, the present invention adopts the following technical solution: The present invention is a cable assembly, comprising at least one first cable module. Each first cable module includes a base, and a plurality of signal terminals, a grounding component, a plurality of cables, and a shielding component fixed to the base. The base has a bottom surface, opposing front and rear sides. The signal terminals include a wire connection portion passing downward through the bottom surface of the base and a plate connection portion exposed on the front side of the base. The grounding component is exposed on the front side of the base. The cables include a central conductor and a shielding layer. The central conductor of the cable is mechanically and electrically connected to the wire connection portion of the signal terminal, and the shielding layer of the cable is mechanically and electrically connected to the grounding component. The shielding component is disposed on the rear side of the base. The shielding component of the present invention cooperates with the grounding component to improve the electrical performance of the cable assembly.

[0005] Compared with the prior art, the shielding component of the present invention, in conjunction with the grounding component, improves the electrical performance of the cable assembly. [Attached Image Description]

[0006] Figure 1 This is a perspective view of the cable assembly of the present invention, which is mounted on a circuit board.

[0007] Figure 2 yes Figure 1 A three-dimensional view from another angle.

[0008] Figure 3 yes Figure 1 A three-dimensional exploded view.

[0009] Figure 4 is Figure 3 A further exploded perspective view, in which the cover and the circuit board are removed.

[0010] Figure 5 is Figure 4 An exploded perspective view from another angle.

[0011] Figure 6 is a perspective view of the base of the cable assembly, and the state before the signal terminals and the grounding parts are cut.

[0012] Figure 7 is Figure 6 A perspective view from another angle.

[0013] Figure 8 is a perspective view of the shielding part of the cable assembly.

[0014] Figure 9 is Figure 8 An exploded perspective view from another angle.

[0015] Figure 10 is Figure 2 The bottom view of

[0016] Figure 11 is Figure 1 A cross-sectional view along the dashed line A-A.

[0017] Figure 12 is Figure 4 A further disassembled perspective view, in which the side plate is removed.

[0018] Figure 13 is Figure 12 An exploded perspective view from another angle.

[0019]

Component Symbol Explanation

[0020] Cable assembly 100 Signal terminal 40 Rib 62 Cable Module 10 Wire connection part 41 63 perforations First cable module 10A Plate connection part 42 64 protruding pillars Second cable module 10B Shielding component 50 Slot 66 Cable 20 finger 52 Bump 68 Front end 202 Side finger 54 Channel 69 Central conductor 21 Bending section 56 Side panel 70 Insulation layer 22 Hole 58 Grounding pin 72 Shielding layer 23 Base 60 Slit 74 Outer insulation layer 24 Auxiliary seat 60B Circuit board 80 Grounding component 30 Bottom 601 Common grounding pad 82 32 lateral fingers Front side 602 Welding Zone 84 Bridge section 35 Rear side 604 Scratching area 86 Positioning post 606 Cover 90 Injection mold 94

[0021] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Specific Embodiments

[0022] Refer to Figure 1-11The cable assembly 100 includes one or more cable modules 10. Each cable module includes multiple cables 20, a grounding element 30, signal terminals 40 connecting the cables, a shielding element 50, a base 60, and a pair of side plates 70. The grounding element 30 electrically connects to a row of cables 20. The shielding element 50 shields the integrated signal terminals 40. The base 60 supports and fixes the integrated cable module 10. The side plates 70 cooperate with the grounding element 30 and the shielding element 50 to form a grounding path. The cable assembly 100 is used to connect to a communication element, such as a circuit board 80. The cable assembly 100 directly interfaces with the circuit board. The communication element may also be an integrated circuit assembly, processor, repeater assembly, connector assembly, or similar.

[0023] The cable assembly 100 further includes a cover 90 for assisting in securing the cable assembly 100 to the circuit board 80. The cable assembly 100 may include an inner injection mold 94 that encloses the portion where the cable 20 connects to the grounding member 30 and the shielding member 50. (See reference...) Figure 12-13 As shown, each cable 20 includes a central conductor 21, an insulating layer 22 enclosing the central conductor, a shielding layer 23 enclosing the insulating layer, and an outer insulating layer 24. In a specific embodiment, the cables 20 are arranged in pairs to transmit differential pair signals, and the insulating layer 22 includes a pair of central conductors 21.

[0024] The base 60 has an inclined plate-like structure, with a bottom surface 601 extending horizontally and opposing front and rear sides 602 and 604. The front and rear sides are inclined at a 45-degree angle to the bottom surface. The signal terminal 40 is integrally embedded in the base 60, and includes a vertically extending board connection portion 41 and an inclined wire connection portion 42. The board connection portion 41 is used to insert the circuit board 80, while the wire connection portion 42 is exposed on the front side 602 of the base, and the middle connection portion is embedded in the base.

[0025] like Figure 3-5 and Figure 11 As shown, the front end 202 of the cable is positioned at approximately 45 degrees to connect with the circuit board 80, achieving a low-profile configuration. Figure 6 As shown, the base 60 is provided with a rib 62, and adjacent cables 20 are separated by the rib 62, thus serving to restrict and position the cables.

[0026] The grounding component 30 is provided with a pair of side fingers 32, which are used to mate with a pair of side plates 70. The grounding component and the signal terminal 40 are initially formed together on the same terminal strip, and then the connecting bridge portion 35 is cut off. Figure 6It is clearly shown), thus cutting off the two. In this embodiment, the grounding member 30 and the signal terminal 40 located on the same tape are initially integrally embedded in the seat body 60 by injection molding, and then the bridge portion 35 is cut off, so that the grounding member 30 and the signal terminal 40 are independent of each other. The seat body 60 is provided with a perforation 63 below the bridge portion 35 for a jig to pass through to cut off the bridge portion 35.

[0027] Refer Figure 7-9 and Figure 11 , the shielding member 50 is provided with a plurality of fingers 52 for elastically contacting the cable shielding layer 23, side fingers 54 are provided at both ends for cooperating with the side plates 70, and several bending portions 56. The shielding member 60 may be provided with one or more holes 58 for cooperating with the protruding columns 64 provided on the seat body 60. The shielding member 60 is mounted on the rear side surface 604 of the seat body. It should be noted that the shielding member 50 may also be mounted on the front side surface 602 as long as the front side surface is provided with cooperating holes or protruding columns, etc. It can be understood that in this embodiment, the present invention has two or more cable modules 10, and the shielding member 50 is fixed on the rear side surface 604 of the seat body. Thus, the shielding member 60 can function as a shielding member for adjacent cable modules 10. In particular, in such a functional arrangement, the independent grounding member 30 and the shielding member 50 are independent of each other on both side surfaces of the cable, and the side plate 70 has a slit 74 for the side fingers 32 of the grounding member and the side fingers 54 of the shielding member 50. Each side plate 70 is provided with a plurality of grounding pins 72 that can be mounted on the circuit board 80. The shielding member 50 can well shield the signal terminals and the cable from adjacent cable modules, reducing signal interference. At the same time, the shielding member abuts against the cable shielding layer of the adjacent cable module. Thus, the grounding member, the cable of the same module, and the shielding member of the adjacent module are connected into one body to form a grounding path, improving the electrical performance.

[0028] The seat body 60 is provided with a plurality of slots 66 located between adjacent cable / terminal pairs. As Figure 6 shown, the bending portions 56 of the shielding member enter the slots 66 to reduce signal interference between adjacent differential signal pairs. The seat body 60 has bumps 68 corresponding to the holes 76 of the side plates 70, so as to respectively fix the side plates 70 on both side surfaces of a plurality of assembled cable modules. The holes and the bumps constitute a positioning structure for mutual positioning and fixing of the seat body and the side plates. The seat body may be provided with a channel 69 for a welding rod to enter from the rear to thermally weld the grounding member 30 and the cable shielding layer 23.

[0029] Refer Figure 12-13As shown, in this embodiment, the cable assembly 100 includes three first cable modules 10A, one second cable module 10B, and an auxiliary base 60B. Each first cable module includes a base 60. The front side 602 of the base has a set of signal terminals 40 and a grounding member 30. At the same time, the cable 20 is arranged on the front side and is mechanically and electrically connected to the signal terminals and the grounding member. The rear side 604 of the base is provided with a shielding member 50, and the bent portion 52 of the shielding member contacts the shielding layer 23 of the cable of the adjacent cable module. The structures and manufacturing processes of the first cable modules are the same. The second cable module 10B lacks a shielding member compared to the first cable module.

[0030] Refer to Figure 4-5 , Figure 7 , Figure 10 As shown, for each module 10, the base 60 is provided with a pair of positioning posts 606 for cooperating with the circuit board, which is also the setting reference line for the conductive pads on the circuit board. The circuit board can also be provided with a common grounding pad 82 for docking with the grounding pins 72 of a pair of side plates. The circuit board is provided with blind holes for accommodating the connection feet 42 of the signal terminals 40. On the back side of the circuit board, connectors, such as matrix electrical connectors, are accommodated. Each welding pad has a corresponding welding area 84 and a scraping area 86, and the setting of the scraping area 86 is based on the scraping distance and the structure of the connector terminals.

[0031] In summary, the above are only the preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby. That is, all simple equivalent changes and modifications made according to the claims and the content of the specification of the present invention should still fall within the scope covered by the present invention patent.

Claims

1. A cable assembly comprising at least two first cable modules arranged in front and back order, each of said first cable modules comprising a housing provided with a bottom surface, opposite and parallel front and back side surfaces, and a plurality of signal terminals, ground members, a plurality of cables and a shield fixed to said housing; characterized in that: The signal terminal includes a plate connecting portion downwardly penetrating the bottom surface of the seat body and a wire connecting portion exposed on the front side surface of the seat body, the grounding member is exposed on the front side surface of the seat body, the cable includes a central conductor and a shielding layer, the central conductor of the cable is mechanically and electrically connected to the wire connecting portion of the signal terminal, and the shielding layer of the cable is mechanically and electrically connected to the grounding member; the shielding member is arranged on the rear side surface of the seat body, the shielding member of the first cable module on the front side mechanically and electrically contacts the shielding layer of the cable of the adjacent first cable module on the rear side, the front side surface and the rear side surface of the seat body are arranged at an acute angle with the bottom surface, and the two sides of the shielding layer of the cable are respectively mechanically and electrically connected to the grounding member and the shielding member of the first cable module on the front side.

2. The cable assembly of claim 1, wherein: The cable assembly includes a pair of side plates, and the side plates are mechanically and electrically connected to the grounding member and the shielding member.

3. The cable assembly of claim 2, wherein: Each of the side plates includes a plurality of grounding feet protruding downwardly from the bottom surface of the seat body.

4. The cable assembly of claim 2, wherein: The seat body and the side plates are provided with positioning structures for mutual positioning and fixation.

5. The cable assembly of claim 1, wherein: The seat body is provided with slits between adjacent cables, and the shielding member is provided with a bending portion inserted into the corresponding slit.

6. The cable assembly of claim 4, wherein: The signal terminal and the grounding member are initially connected together; the signal terminal and the grounding member are cut off after being fixed to the seat body, and are electrically isolated from each other.

7. The cable assembly of claim 1, wherein: The front side surface and the rear side surface of the seat body are at an angle of 45 degrees with the bottom surface.

8. The cable assembly of claim 2, wherein: The shielding member is provided with a plurality of finger portions for mechanically and electrically connecting the shielding layers of the cables of adjacent cable modules.

9. The cable assembly of claim 2, wherein: The cable assembly further includes a second cable module, and the second cable module includes a signal terminal, a grounding member and a cable, but the rear side surface of the second cable module is not provided with a shielding member.

10. The cable assembly of claim 9, wherein: The cable assembly further includes an auxiliary seat body, and the rear side surface of the auxiliary seat body is fixed with a shielding member.

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