High-speed transmission cable assembly, module and backboard connector plug

Abstract

The utility model discloses a high-speed transmission cable assembly, a signal module, a shielding member and a signal line. According to the utility model, the tail end of the shielding core wire is arranged in the shielding core wire fixing groove, so that the side wall of the shielding piece is cut into the shielding core wire, and the shielding piece is connected with the shielding core wire. The problem that holes need to be formed in the positions, corresponding to the welding positions of the signal core wires and the signal pins, of the shielding piece is avoided. The utility model further provides a cable module and a backboard connector plug, the cable module is composed of a plurality of cable assemblies and an insulator, the backboard connector plug is composed of a plurality of cable modules and a plug shell, the cable modules are fixed through the plug shell, and the plug shell is provided with a clamping groove, a guide groove and a positioning hole.

Description

Technical Field

[0001] The utility model relates to the field of signal transmission, and more specifically, to a cable assembly, a module and a backplane connector plug for high-speed transmission. Background Art

[0002] The PCB substrate is excellent enough in terms of durability and mechanical properties, and all performance indicators can meet the needs of general industrial electronic products. Although the PCB substrate has a high cost performance, in view of the increasingly high requirements for transmission performance, the PCB has become a short board, restricting the improvement of product performance. At present, in addition to fiber optic technology, the wired backplane technology is one of the few alternative solutions for large computing and switching systems.

[0003] The transition from PCB to cable began to take shape several years ago, which is driven by the development of the electrical performance characteristics of the cable, and its performance can exceed that of first-class multi-layer PCBs. Replacing the PCB with a cable in the QSFP (transceiver) to ASIC board link in the communication-intensive part of the data center and in the data processing-intensive area at the core of the hyperscale cloud computing server cluster will become a development trend.

[0004] In the existing cable, the grounding method generally adopted for the shielded core wire is to open a hole at the welding position of the signal pin and the signal wire core, assemble the signal module and the cable onto the shield in sequence, and then weld the signal core wire and the shielded core wire at one time. However, opening the hole will cause the shield ring to be incomplete, resulting in a reduction in shielding effectiveness and thus reducing the anti-interference performance of the product. Summary of the Utility Model

[0005] The present utility model provides a cable assembly, a module and a backplane connector plug for high-speed transmission, hoping to improve the high-speed signal transmission performance of the cable assembly through structural design without increasing the process.

[0006] To solve the above technical problems, the present utility model adopts the following technical solutions:

[0007] On the one hand, the present utility model provides a cable assembly for high-speed transmission.

[0008] A cable assembly for high-speed transmission includes a signal module, a shield, and signal wires;

[0009] The signal module includes signal pins and an insulating frame. A signal pin placement groove is provided at the front end of the insulating frame, and the signal pins are installed in the signal pin placement groove. The rear part of the insulating frame is a signal wire installation groove, and on both sides of the signal wire installation groove are signal wire installation clips. A shielded core wire fixing groove is provided outside the signal wire installation groove;

[0010] A signal module mounting groove is provided at the front of the shielding member. The signal module is mounted in the signal module mounting groove, and a signal line fixing clip is provided at the rear of the shielding member.

[0011] The signal line includes a signal core wire, a shielding core wire, and a shielding layer. The signal core wire has an insulating outer sheath. The signal line is disposed in a signal line mounting groove on the signal module, and the signal core wire is connected to a signal pin of the signal module.

[0012] The signal line fixing clip and the signal line mounting groove provided on the insulating frame of the signal module are for initially fixing and positioning the signal line to prevent the signal line from being misaligned during welding.

[0013] The tail end of the shielding core wire is placed in a shielding core wire fixing groove of the signal module, and the side wall of the shielding member cuts into the shielding core wire and is connected to the shielding core wire.

[0014] The shielding layer wraps the signal core wire and the shielding core wire. The signal core wire has an insulating outer sheath, and the shielding core wire is connected to the shielding layer.

[0015] The signal line shielding core wire mounting groove provided on the insulating frame is for fixing the shielding core wire and providing positioning for the subsequent cutting of the shielding core wire by the shielding member (connection point 1). The shielding core wire receiving groove at the bottom of the insulating frame is for receiving the tail end of the shielding core wire to prevent it from being arranged disorderly.

[0016] A further technical solution is that a mating detent groove and a detent are provided on the outer bottom of the signal module and the inner bottom of the shielding member.

[0017] An even further technical solution is that signal module fixing buckles are provided on both left and right sides of the shielding member.

[0018] Shielding member mounting platforms are provided on both sides of the signal module. The signal module fixing buckles and the shielding member mounting platforms cooperate to limit the left - right, up - down movement of the signal module.

[0019] The mating detent groove and detent provided on the signal module and the shielding member are for fixing the signal module. In addition, the module fixing buckles and the shielding member mounting platforms can limit the six degrees of freedom (front - back, up - down, left - right) of the signal module.

[0020] An even further technical solution is that a signal line support platform is provided at the inner bottom of the tail of the shielding member.

[0021] The signal line support platform is used to limit the height position of the signal line.

[0022] The signal line support platform provided on the shielding member aims to support the signal line on the same horizontal line on the shielding member and the signal module, avoiding bending to cause stress concentration and high - speed signal transmission fluctuations.

[0023] A further technical solution is that an impedance adjustment cavity is provided on the back of the connection position between the signal module and the signal core wire.

[0024] The purpose of the impedance adjustment cavity is to reduce the impedance at the connection position between the signal core wire of the signal line and the signal pin of the signal module. At the same time, this cavity can provide a clearance for the welding tooling.

[0025] A further technical solution is that the tail end of the shielding core wire is placed in a receiving groove formed between the insulating frame and the shielding part of the signal module. The tail end of the shielding core wire contacts the shielding part, and a connection point 2 for the shielding core wire and the shielding part is provided by designing the depth of the receiving groove to be slightly lower than the diameter of the shielding core wire.

[0026] A further technical solution is that the signal core wire is a differential line, there are two signal pins, which are respectively connected to one of the signal lines of the differential line, and the signal line is wrapped with an insulating layer.

[0027] The present utility model also provides a cable assembly module for high-speed transmission.

[0028] A cable assembly module for high-speed transmission is composed of at least two cable assemblies for high-speed transmission as described above and an insulator;

[0029] The cable assemblies are arranged through the insulator at a set spacing, and the insulator is provided with fixing clips.

[0030] The cable assembly module is used to fix the cable assemblies and facilitate subsequent installation into the backplane connector plug.

[0031] The present utility model also provides a backplane connector plug.

[0032] A backplane connector plug includes the cable assembly module and a plug housing as described above;

[0033] Positioning holes are provided on the plug housing;

[0034] The cable assembly module passes through the positioning holes of the plug housing.

[0035] A further technical solution is that clamping grooves and guiding grooves are also provided on the insulating plug housing;

[0036] The clamping grooves are used for fixing the cable assembly module and the socket housing;

[0037] The guiding grooves are matched with the corresponding sockets and are used to guide the mating of the corresponding sockets.

[0038] Compared with the prior art, the utility model has at least the following beneficial effects: By arranging the tail end of the shielded core wire in the shielded core wire fixing groove, the side wall of the shield cuts into the shielded core wire, realizing the connection between the shield and the shielded core wire. This avoids the problem of having to open holes in the shield corresponding to the welding positions of the signal core wire and the signal pin. The utility model also provides a cable module and a backplane connector plug. The cable module is composed of multiple cable assemblies and an insulator, and the backplane connector plug is composed of multiple cable modules and a plug housing. The cable module is fixed by the plug housing, and the plug housing is provided with a card slot, a guide slot, and a positioning hole. Description of the Drawings

[0039] Figure 1 Figure 1 is a front structural schematic diagram of the signal module in Embodiment 1;

[0040] Figure 2 Figure 2 is a back structural schematic diagram of the signal module in Embodiment 1;

[0041] Figure 3 Figure 3 is a structural schematic diagram of the shield;

[0042] Figure 4 Figure 4 is a structural schematic diagram of the signal wire;

[0043] Figure 5 Figure 5 is an installation structural schematic diagram of Embodiment 1;

[0044] Figure 6 Figure 6 is an installation cross-sectional structural schematic diagram of Embodiment 1;

[0045] Figure 7 Figure 7 is a schematic diagram of the cable assembly module in Embodiment 2;

[0046] Figure 8 Figure 8 is a structural schematic diagram of the high-speed backplane connector in Embodiment 3;

[0047] Figure 9 Figure 9 is a schematic diagram of the plug housing in Embodiment 3.

[0048] In the figures, 1 - signal module, 11 - signal pin, 12 - insulating frame, 13 - signal wire installation groove, 14 - signal wire installation clip, 15 - shielded core wire fixing groove, 16 - stop groove, 17 - shield installation table, 18 - impedance adjustment cavity, 2 - shield, 21 - signal wire fixing clip, 22 - stop clip, 23 - signal module fixing buckle, 24 - signal wire support table, 3 - signal wire, 31 - signal core wire, 32 - shielded core wire, 33 - shielding layer, 4 - cable assembly module, 41 - insulator, 42 - fixing clip, 5 - plug housing, 51 - guide groove, 52 - card slot, 53 - positioning hole, 61 - connection point 1, 62 - connection point 2. Detailed Embodiment

[0049] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0050] Embodiment 1

[0051] A cable assembly for high-speed transmission includes a signal module 1, a shielding member 2, and signal wires.

[0052] See Figure 1 、 Figure 2 , the signal module 1 includes signal pins 11 and an insulating frame 12. A signal pin placement groove is provided at the front end of the insulating frame 12, and the signal pins 11 are installed in the signal pin placement groove. The rear part of the insulating frame 12 is a signal wire installation groove 13. On both sides of the signal wire installation groove 13 are signal wire installation clips 14. A shielding core wire fixing groove 15 is provided outside the signal wire installation groove 13;

[0053] At the front part of the shielding member 2 is provided a signal module 1 installation groove, and the signal module 1 is installed in the signal module 1 installation groove. At the rear part of the shielding member 2 is provided a signal wire fixing clip 21;

[0054] At the back of the connection position between the signal module 1 and the signal core wire 31 is provided an impedance adjustment cavity 18.

[0055] At the inner bottom of the tail of the shielding member 2 is provided a signal wire support platform 24;

[0056] The signal wire support platform 24 is used to define the height position of the signal wire.

[0057] On the outer bottom of the signal module 1 and the inner bottom of the shielding member 2 are provided mating anti-slip grooves 16 and anti-slip cards 22.

[0058] In this embodiment, 2 anti-slip grooves 16 are provided on the outer bottom of the signal module 1, and anti-slip cards 22 matching the anti-slip grooves 16 are provided on the inner bottom of the shielding member 2;

[0059] On the left and right sides of the shielding member 2 are provided signal module 1 fixing clasps;

[0060] See Figure 3 , on both sides of the signal module 1 are provided shielding member 2 installation platforms 17, and the signal module 1 fixing clasps and the shielding member 2 installation platforms 17 cooperate to limit the left-right and up-down movement of the signal module 1.

[0061] The signal line 3 includes a signal core wire 31, a shield core wire 32, and a shield layer 33. The signal line 3 is disposed in a signal line installation groove 13 on the signal module 1, and the signal core wire 31 is connected to a signal pin 11 of the signal module 1;

[0062] In this embodiment, refer to Figure 4 , the signal core wire 31 is a differential line, and there are two signal pins 11, which are respectively connected to one of the signal lines of the differential line.

[0063] The tail end of the shield core wire 32 is placed in the shield core wire fixing groove 15, and the side wall of the shield 2 cuts into the shield core wire 32 and is connected to the shield core wire 32.

[0064] In this embodiment, the tail end of the shield core wire 32 is placed in a receiving groove formed between the insulating frame 12 of the signal module 1 and the shield 2, and the tail end of the shield core wire 32 contacts the shield 2.

[0065] The shield layer 33 wraps the signal core wire 31 and the shield core wire 32. The signal core wire 31 has an insulating outer skin, and the shield core wire 31 is connected to the shield layer 33.

[0066] During use, first weld the two signal core wires 31 of the differential line and the signal pins 11 of the signal module 1, and then install the signal pins 11 into the signal pin placement grooves of the insulating frame 12;

[0067] After completing the above installation, pass the differential line through the signal line installation groove 13 at the rear of the insulating frame 12 and complete the fixation;

[0068] Install the insulating frame 12 into the shield 2, so that the stop groove 16, the stop card 22, the module fixing buckle, and the shield 2 installation platform 17 between the shield 2 and the insulating frame 12 are completed with limit fixation, and the signal module 1 is limited in the up, down, left, right, front, and rear directions. At this time, the differential line passes through the signal line fixing card 21 at the rear of the shield 2, the differential line is located on the support platform, and the height of the differential line in the shield 2 is the same as the height of the signal pins 11 in the signal module 1.

[0069] The tail end of the shield core wire 32 is placed in the shield core wire fixing groove 15, and the side wall of the shield 2 cuts into the shield core wire 32, refer to Figure 5 , and is connected to the shield core wire 32. The tail end of the shield core wire 32 is placed in a receiving groove formed between the insulating frame 12 of the signal module 1 and the shield 2, and the tail end of the shield core wire 32 contacts the shield 2, refer to Figure 6 .

[0070] The signal module 1 installation card on one side of the shield 2 directly cuts into and is connected to the shield core wire 32 of the signal line without welding again.

[0071] Embodiment 2

[0072] A cable assembly module for high-speed transmission, see Figure 7 , which is composed of at least two of the above-mentioned high-speed transmission cable assemblies and an insulator 41;

[0073] In this embodiment, four cable assemblies are provided in a cable assembly module 4, and fixing clips 42 are provided on the insulator 41;

[0074] The cable assemblies are arranged at a set spacing and pass through the insulator 41.

[0075] The fixing clips 42 are arranged on both sides of the cable assembly module 4. The fixing clips 42 are specifically elastic buckles. After the cable assembly module 4 is inserted into the set position, the fixing clips 42 complete the fixing of the plug.

[0076] Embodiment III

[0077] A backplane connector plug, see Figure 8 、 Figure 9 , including the cable assembly module 4 and the plug housing 5 as described above;

[0078] Positioning holes 53 are provided on the plug housing 5;

[0079] The cable assembly module 4 passes through the positioning holes 53 of the plug housing 5.

[0080] Guide grooves 51 and card slots 52 are provided on the plug housing 5;

[0081] In this embodiment, the number of cable assembly modules is 8, and there are 4 cable assemblies in each cable assembly module;

[0082] The cable assembly module 4 passes through and is fixed in the plug housing 5. After being inserted into the set position, the fixing clips 42 of the cable assembly module 4 snap into the card slots 52 of the plug housing 5 to complete the fixing of the plug.

[0083] The guide grooves 51 are provided on both sides of the plug housing 5. The guide grooves 51 are matched with the corresponding sockets and are used to guide the installation of the cable assembly plug.

[0084] Although the present invention has been described herein with reference to its illustrative embodiments, it should be understood that those skilled in the art can design many other modifications and embodiments that will fall within the scope and spirit of the principles disclosed in this application. More specifically, within the scope of the disclosure of this application, various variations and improvements can be made to the components and / or layout of the subject combination layout. In addition to the variations and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A cable assembly for high-speed transmission, characterized in that, It includes a signal module, a shield, and a signal line; The signal module includes signal pins and an insulating frame. A signal pin placement groove is provided at the front end of the insulating frame, and the signal pins are installed in the signal pin placement groove. The rear part of the insulating frame is a signal line installation groove, and on both sides of the signal line installation groove are signal line installation clips. A shielded core wire fixing groove is provided outside the signal line installation groove; A signal module installation groove is provided at the front part of the shield, and the signal module is installed in the signal module installation groove. A signal line fixing clip is provided at the rear part of the shield; The signal line includes a signal core wire, a shielded core wire, and a shielding layer. The signal core wire has an insulating outer skin. The signal line is arranged in the signal line installation groove on the signal module, and the signal core wire is connected to the signal pins of the signal module; The tail end of the shielded core wire is placed in the shielded core wire fixing groove of the signal module, and the side wall of the shield cuts into the shielded core wire and is connected to the shielded core wire; The shielding layer wraps the signal core wire and the shielded core wire. The signal core wire has an insulating outer skin, and the shielded core wire is connected to the shielding layer.

2. The cable assembly for high-speed transmission according to claim 1, wherein A mating detent groove and a detent are provided at the outer bottom of the signal module and the inner bottom of the shield; 3. A cable assembly for high-speed transmission according to any one of claims 1-2, characterized in that Signal module fixing clasps are provided on both left and right sides of the shield; Shield installation platforms are provided on both sides of the signal module. The signal module fixing clasps and the shield installation platforms cooperate to limit the left-right and up-down movement of the signal module.

4. A cable assembly for high-speed transmission according to claim 3, characterized in that, A signal line support platform is provided at the inner bottom of the tail part of the shield; The signal line support platform is used to define the height position of the signal line.

5. A cable assembly for high-speed transmission according to claim 1, characterized in that, An impedance adjustment cavity is provided at the back of the connection position between the signal module and the signal core wire.

6. A cable assembly for high-speed transmission as claimed in claim 1, wherein, The tail end of the shielded core wire is placed in a storage groove formed between the insulating frame of the signal module and the shield, and the tail end of the shielded core wire contacts the shield.

7. The cable assembly for high-speed transmission according to claim 1, wherein, The signal core wire is a differential line, and there are two signal pins, which are respectively connected to one of the signal lines of the differential line.

8. A cable assembly module for high-speed transmission, characterized in that, It is composed of at least two high-speed transmission cable assemblies as described in any one of claims 1-7 and an insulator; The cable assemblies are arranged through the insulator at a set spacing, and the insulator is provided with fixing clips.

9. A backplane connector plug, characterized in that, It includes a cable assembly module as described in claim 8 and a plug housing; Positioning holes are provided on the plug housing; The cable assembly module passes through the positioning holes of the plug housing.

10. A backplane connector plug according to claim 9, characterized in that, Slots and guide grooves are also provided on the plug housing; The slots are used for fixing the cable assembly module to the plug housing; The guide grooves are matched with the corresponding sockets for plugging with the corresponding sockets.

Images