A high-density shielded cable assembly for electromagnetic compatibility testing
Patent Information
- Application Number
- CN202522337648.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-04
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-11-04
AI Technical Summary
[0003]存在以下不足：虽使用屏蔽导线，但是导线在接入连接器时需剥去屏蔽层做处理，屏蔽层处理太远的话会影响屏蔽效果，常规处理尺寸均在距导线端面100mm～120mm之间进行剥线，屏蔽线从剥线处到导线端面100mm左右均为无屏蔽状态，会影响试验效果
[0012]本实用新型通过导线屏蔽层靠近插头封严体，这样减少了屏蔽裸露的长度，屏蔽层及防波套采用分开接壳方式，把裸露在外面的导线芯使用导电布搭接缠绕上，打磨后接壳，减小了接触电阻，增加了屏蔽的连续性及屏蔽效果，现使用的这种防波套接壳方式在尾附处缠绕填满，即使线束经常弯折，也不会出现防波套露出缝隙问题，解决了接壳防波套不外漏问题，又多增加了一层屏蔽，增强了电磁屏蔽效果。
Smart Images
Figure CN224804373U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high-density shielded cable technology for electromagnetic compatibility experiments, and in particular to a high-density shielded cable assembly for electromagnetic compatibility experiments. Background Technology
[0002] The current technical solution involves using shielded wires for the cable harness during electromagnetic compatibility testing of the cable assembly, with an external anti-wave sleeve and HE tail accessories.
[0003] The following shortcomings exist: Although shielded wires are used, the shielding layer needs to be stripped when the wires are connected to the connector. If the shielding layer is stripped too far away, it will affect the shielding effect. The conventional stripping size is between 100mm and 120mm from the end face of the wire. The shielded wire is unshielded for about 100mm from the stripped area to the end face of the wire, which will affect the test results.
[0004] When the accessories overlap with the anti-surge sleeve and shielding layer, the shielding layer is usually overlapped with the tail accessory after the anti-surge sleeve. This overlap will increase the contact resistance and affect the test results.
[0005] Therefore, it is essential to provide a high-density shielded cable assembly for electromagnetic compatibility experiments to address the shortcomings of existing technologies. Utility Model Content
[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a high-density shielded cable assembly for electromagnetic compatibility (EMC) experiments. This high-density shielded cable assembly for EMC experiments reduces the exposed length of the shield by having the conductor shielding layer close to the plug seal. The shielding layer and the anti-surge sleeve are connected separately. The exposed conductor core is wrapped with conductive cloth and then polished to connect the shell, reducing contact resistance and increasing the continuity and effectiveness of the shielding. The anti-surge sleeve connection method used in this invention completely fills the tail end, so even if the cable bundle is frequently bent, there will be no gaps in the anti-surge sleeve. This solves the problem of the anti-surge sleeve not being exposed and adds an extra layer of shielding, enhancing the electromagnetic shielding effect.
[0007] The above-mentioned objectives of this utility model are achieved through the following technical means.
[0008] A high-density shielded cable assembly for electromagnetic compatibility experiments is provided, including a conductor shielding shell, a connector assembly, and a conductor bundle assembly. The conductor shielding shell and the conductor bundle assembly are connected, and the connection between the conductor shielding shell and the conductor bundle assembly is protected and connected by the connector assembly. The wire bundle assembly includes several shielded wires, one end of which is fixedly welded with a connecting plate, which is screwed onto the wire shielding shell.
[0009] Specifically, the shielded wire includes an inner conductor, an insulation layer installed on the outside of the inner conductor, a shielding layer installed on the outside of the insulation layer, and a sheath installed on the outside of the shielding layer. The end of the shielded wire near the connecting solder pad has a bare conductor part, and the shielded wire also has a bare shielding part. Several bare shielding parts are welded to the connector assembly through the wire core, and the wire core is wound around the outside of several bare shielding parts 3-4 times.
[0010] Specifically, the connector assembly includes a fixed tail accessory, a wire core soldered onto the fixed tail accessory, a fixed tail accessory spirally mounted on the wire shielding shell, an inner conductive adhesive layer wrapped around the outside of several shielded wires near the connecting solder pad, an outer anti-wave sleeve installed outside the inner conductive adhesive layer, and a connecting anti-wave sleeve layer filling the space between the outer anti-wave sleeve and the fixed tail accessory.
[0011] Specifically, an external conductive adhesive tape layer is wrapped around the outside of the fixed tail accessory, and a tail accessory protective heat shrink tubing is installed on the outside of the external conductive adhesive tape layer and on the outside of the outer anti-wave sleeve near the connector connection assembly.
[0012] This invention reduces the length of exposed shielding by bringing the wire shielding layer close to the plug sealing body. The shielding layer and the anti-surge sleeve are connected separately. The exposed wire core is wrapped with conductive cloth and then polished to connect the shell, reducing contact resistance and increasing the continuity and effectiveness of the shielding. The current anti-surge sleeve connection method is fully wrapped at the tail, so even if the wire harness is frequently bent, there will be no gaps in the anti-surge sleeve. This solves the problem of the anti-surge sleeve not being exposed and adds an extra layer of shielding, enhancing the electromagnetic shielding effect. Attached Figure Description
[0013] The present invention will be further described with reference to the accompanying drawings, but the content of the drawings does not constitute any limitation on the present invention.
[0014] Figure 1 This is a three-dimensional structural diagram of a high-density shielded cable assembly used for electromagnetic compatibility experiments according to this utility model.
[0015] Figure 2 This is a partial three-dimensional structural diagram of a high-density shielded cable assembly for electromagnetic compatibility experiments according to this utility model. Figure 1 .
[0016] Figure 3 This is a partial three-dimensional structural diagram of a high-density shielded cable assembly for electromagnetic compatibility experiments according to this utility model. Figure 2 .
[0017] Figure 4This is a partial three-dimensional structural diagram of a high-density shielded cable assembly for electromagnetic compatibility experiments according to this utility model. Figure 3 ; Figure 5 This is a partial front view schematic diagram of a high-density shielded cable assembly used for electromagnetic compatibility experiments according to this utility model.
[0018] Figure 6 This is a three-dimensional structural diagram of the shielding conductor of a high-density shielded cable assembly used for electromagnetic compatibility experiments, according to this utility model.
[0019] from Figures 1 to 6 Including: 1. Wire shielding housing; 2. Shielded wire; 3. Connect the solder pads; 4. Inner conductor; 5. Insulation layer; 6. Shielding layer; 7. Sheath; 8. Bare conductor section; 9. Bare shielding part; 10. Fixed tail accessories; 11. Inner conductive adhesive tape layer; 12. External wave-damping sleeve; 13. Connect the breakwater sleeve; 14. External conductive adhesive tape layer; 15. Protective heat shrink tubing attached to the tail; 16. Conductor core. Detailed Implementation
[0020] The present invention will be further described in conjunction with the following embodiments.
[0021] Example 1: like Figure 1-5 As shown, a high-density shielded cable assembly for electromagnetic compatibility experiments includes a conductor shielding shell 1, a connector assembly, and a conductor bundle assembly. The conductor shielding shell 1 and the conductor bundle assembly are connected, and the connection between the conductor shielding shell 1 and the conductor bundle assembly is protected and connected by the connector assembly.
[0022] The wire bundle assembly includes several shielded wires 2, one end of which is fixedly welded with a connecting plate 3, and the connecting plate 3 is spirally installed with the wire shielding shell 1.
[0023] The shielded wire 2 includes an inner conductor 4, an insulation layer 5 installed on the outside of the inner conductor 4, a shielding layer 6 installed on the outside of the insulation layer 5, and a sheath 7 installed on the outside of the shielding layer 6. A bare conductor part 8 is provided at one end of the shielded wire 2 near the connecting solder piece 3. A bare shielding part 9 is also provided on the shielded wire 2. Several bare shielding parts 9 are welded to the connector assembly through the wire core 16. The wire core 16 is wound around the outside of several bare shielding parts 9 3-4 times.
[0024] The shielded wire 2 is made of silver-plated copper core PFA insulated silver-plated shielded wire. The insulation and shielding layer 6 are stripped 30mm from the end face of the shielded wire 2 near the connecting solder piece 3 for insulation treatment. At 70mm from the end face of the shielded wire 2 near the connecting solder piece 3, the wire is made with a window (the insulation of the wire is stripped, and the shielding layer 6 is retained). The window size is 10mm. All wires are bundled together, and the bare shielding part 9 is wrapped with the wire core 16. After wrapping 3 to 4 times, it is soldered. The solder lead wire is soldered to the end screw.
[0025] The connector assembly includes a fixed tail accessory 10, a conductor core 16 soldered onto the fixed tail accessory 10, the fixed tail accessory 10 spirally mounted on the conductor shielding shell 1, an inner conductive adhesive layer 11 wrapped around the outside of several shielded conductors 2 near the connecting solder pad 3, an outer anti-wave sleeve 12 installed on the outside of the inner conductive adhesive layer 11, and a connecting anti-wave sleeve layer 13 filling the space between the outer anti-wave sleeve 12 and the fixed tail accessory 10.
[0026] The anti-electromagnetic wave sleeve is a high-density anti-electromagnetic wave sleeve, characterized by thin walls, light weight, and high density. Conductive tape is used to overlap and wrap upwards from the opening of the wire to the sealing body to increase the shielding effect. The primer of the fixed tail accessory 10 is lightly sanded with fine sandpaper until the primer peels off, exposing the aluminum alloy shell. This can reduce the contact resistance. The connecting anti-electromagnetic wave sleeve layer 13 is inserted parallel and straight to the sealing body and then flipped back to the pressure plate. Then, the connecting anti-electromagnetic wave sleeve layer 13 is used to press the flipped-back anti-electromagnetic wave sleeve to fill and protect it 360° until there are no visible gaps. Finally, starting from the knurled part of the tail accessory, the connecting anti-electromagnetic wave sleeve layer 13 is wrapped downwards. After wrapping to the overlap of the pressure plate, the connecting anti-electromagnetic wave sleeve layer 13 is evenly pasted and fixed with conductive tape.
[0027] An external conductive adhesive tape layer 14 is wrapped around the outside of the fixed tail accessory 10. A tail accessory protective heat shrink tubing 15 is installed on the outside of the external conductive adhesive tape layer 14 and on the outside of the outer anti-wave sleeve 12 near the connector connection assembly.
[0028] Finally, blow-shrink the tail-end protective heat shrink tubing 15, starting from the knurled part of the fixed tail accessory 10, and completely wrap the exposed conductive tape and outer anti-wave sleeve 12.
[0029] This invention reduces the exposed length of the shield by bringing the wire shielding layer 6 close to the plug sealing body. The shielding layer 6 and the anti-surge sleeve are connected separately, instead of the conventional method of connecting the wires and the anti-surge sleeve together. The exposed wire core 16 is wrapped with conductive cloth and then polished before being connected to the shell, which reduces the contact resistance and increases the continuity and effectiveness of the shielding. The anti-surge sleeve connection method used here is fully wrapped at the tail, so even if the wire harness is frequently bent, there will be no gaps in the anti-surge sleeve. This solves the problem of the anti-surge sleeve not being exposed and adds an extra layer of shielding, enhancing the electromagnetic shielding effect.
[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.
Claims
1. A high-density shielded cable assembly for electromagnetic compatibility experiments, characterized in that: It includes a wire shielding shell, a connector assembly, and a wire bundle assembly. The wire shielding shell and the wire bundle assembly are connected, and the connection between the wire shielding shell and the wire bundle assembly is protected and connected by the connector assembly. The wire bundle assembly includes several shielded wires, one end of which is fixedly welded with a connecting plate, which is screwed onto the wire shielding shell.
2. A high-density shielded cable assembly for electromagnetic compatibility experiments according to claim 1, characterized in that: The shielded wire includes an inner conductor, an insulation layer installed on the outside of the inner conductor, a shielding layer installed on the outside of the insulation layer, and a sheath installed on the outside of the shielding layer. The end of the shielded wire near the connecting solder pad has a bare conductor part, and the shielded wire also has bare shielding parts. Several bare shielding parts are welded to the connector assembly through the wire core, and the wire core is wound 3-4 turns around the outside of several bare shielding parts.
3. A high-density shielded cable assembly for electromagnetic compatibility experiments according to claim 2, characterized in that: The connector assembly includes a fixed tail accessory, the conductor core is soldered onto the fixed tail accessory, the fixed tail accessory is spirally mounted on the conductor shielding shell, an inner conductive adhesive layer is wrapped around the outside of several shielded conductors near the connecting solder pad, an outer anti-wave sleeve is installed on the outside of the inner conductive adhesive layer, and a connecting anti-wave sleeve layer is filled between the outer anti-wave sleeve and the fixed tail accessory.
4. A high-density shielded cable assembly for electromagnetic compatibility experiments according to claim 3, characterized in that: The outer conductive tape layer is wrapped around the fixed tail accessory. The outer conductive tape layer and the outer anti-surge sleeve near the connector connection assembly are fitted with tail accessory protective heat shrink tubing.