Cables and data lines
By using a multi-layer core wire structure and a cross-braided layer design, the problem of insufficient roundness in USB data cables is solved, and the stability and deformation resistance of the cable under stress are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING XIAOMI MOBILE SOFTWARE CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-31
AI Technical Summary
Existing USB data cables have low cable roundness, and the filler is prone to displacement during use, which further reduces the roundness.
It adopts a multi-layer core wire structure, including a central first-class core wire and second and third-class core wires arranged around it. Through cross-braided layers and a protective sheath, a compact ring structure is formed to ensure contact and constraint between the core wires and improve the roundness of the cable.
It improves the roundness of the cable, prevents the core wire from shifting or loosening under external pressure, maintains the stability of the cable's cross-sectional shape, and reduces the risk of cracking caused by bending or external force.
Smart Images
Figure CN224582023U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of data cable technology, and more particularly to a cable and a data cable. Background Technology
[0002] USB (Universal Serial Bus) data cables are a standardized interface technology used to connect computers to external devices such as keyboards, mice, printers, and storage devices. They support plug-and-play functionality and are widely used in personal computers, mobile devices, and other electronic devices.
[0003] Existing USB data cables have low roundness, and the filler material inside the cable is prone to displacement during use, which further reduces the roundness of the cable. Utility Model Content
[0004] This application provides a cable and a data cable.
[0005] A first aspect of this application provides a cable, the cable including a core wire and a protective sleeve covering the outside of the core wire;
[0006] The core wire includes a first type of core wire and a second type of core wire; the axis of the second type of core wire is parallel to the axis of the first type of core wire; the diameter of the second type of core wire is smaller than the diameter of the first type of core wire.
[0007] The first type of core wire includes a first core wire and multiple second core wires of the same diameter; the axis of the first core wire and the axis of the second core wire are parallel to each other; multiple second core wires are arranged around the first core wire, and each second core wire is in contact with the first core wire and the protective sleeve, and the outer surfaces of adjacent second core wires are in contact with each other;
[0008] Two adjacent second core wires and the protective sleeve form a first gap, and a second type of core wire is provided in each first gap; each second type of core wire is in contact with two adjacent second core wires and with the protective sleeve.
[0009] In some embodiments, the core wire further includes a third type of core wire; the axis of the third type of core wire is parallel to the axis of the second core wire; the diameter of the third type of core wire is smaller than the diameter of the second type of core wire.
[0010] Each of the second type core wires, its adjacent second core wire, and the protective sleeve form a second gap, and each of the second gaps contains one of the third type core wires; each of the third type core wires is in contact with its adjacent second type core wire and second core wire.
[0011] In some embodiments, the first type of core wire includes a power supply line, a configuration channel line, an auxiliary power supply line, a differential data positive line, and a differential data negative line; the differential data positive line and the differential data negative line are adjacent; the second type of core wire is either a grounding line or an auxiliary support line; the third type of core wire is either a grounding line or an auxiliary support line.
[0012] Alternatively, the first type of core wire includes a ground wire, a configuration channel wire, an auxiliary power supply wire, a differential data positive wire, and a differential data negative wire; the differential data positive wire and the differential data negative wire are adjacent; the second type of core wire is either a power supply wire or an auxiliary support wire; and the third type of core wire is either a power supply wire or an auxiliary support wire.
[0013] In some embodiments, the first type of core wire includes a power supply line, a configuration channel line, an auxiliary power supply line, a differential data positive line, and a differential data negative line; the differential data positive line and the differential data negative line are adjacent; the second type of core wire is a ground wire;
[0014] Alternatively, the first type of core wire includes a ground wire, a configuration channel wire, an auxiliary power supply wire, a differential data positive wire, and a differential data negative wire; the differential data positive wire and the differential data negative wire are adjacent; the second type of core wire is a power supply wire.
[0015] In some embodiments, the first type of core wire includes a power supply wire, a ground wire, a configuration channel wire, an auxiliary power supply wire, a differential data positive wire, and a differential data negative wire; the differential data positive wire and the differential data negative wire are adjacent to each other; the second type of core wire is an auxiliary support wire.
[0016] In some embodiments, the grounding wire includes a conductor and an insulating layer wrapped around the outside of the conductor.
[0017] In some embodiments, the protective sleeve includes an outer sheath, a first braided layer, and a second braided layer;
[0018] The second braided layer is located on the side of the first braided layer away from the core wire; the braided threads of the first braided layer and the braided threads of the second braided layer are interwoven; the outer sheath layer is located on the side of the second braided layer away from the first braided layer.
[0019] In some embodiments, the protective sleeve includes an outer sheath, a braided layer, and a wrapping layer, wherein the braided layer is located on the side of the wrapping layer away from the core wire; and the outer sheath is located on the side of the braided layer away from the wrapping layer.
[0020] In some embodiments, the core wires are twisted together.
[0021] A second aspect of this application provides a data cable including a first connector, a second connector, and the aforementioned cable, the cable being used for electrically connecting the first connector and the second connector.
[0022] The first core wire of the cable provided in this embodiment is located at the center of the cable. Multiple second core wires of the same diameter form a ring structure around the first core wire, giving the core wire group composed of the first core wire and multiple second core wires 112 good roundness. Embedding smaller diameter second type core wires within the first gap fills the gaps between the core wires, further improving the roundness of the cable. The second type core wires are in contact with adjacent second core wires and the protective sleeve. The protective sleeve covers the outside of the core wires, constraining them. The contact between the core wires also constrains each other, thus preventing displacement or loosening of the core wires under external pressure. This helps maintain the stability of the cable's cross-sectional shape and prevents the cable's roundness from decreasing due to bending or external force.
[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.
[0025] Figure 1 A cross-sectional view of a cable cut radially according to an embodiment of this application;
[0026] Figure 2 A cross-sectional view of a cable cut radially according to another embodiment of this application;
[0027] Figure 3 A cross-sectional view of a cable cut radially according to another embodiment of this application;
[0028] Figure 4 A cross-sectional view of a cable cut radially according to another embodiment of this application;
[0029] Figure 5 A cross-sectional view of a cable cut radially according to another embodiment of this application;
[0030] Figure 6 A cross-sectional view of a cable cut radially according to another embodiment of this application;
[0031] Figure 7 A cross-sectional view of a cable cut radially according to another embodiment of this application. Detailed Implementation
[0032] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0033] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.
[0034] The cables and data lines of this application embodiments will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can complement or combine with each other.
[0035] This application provides a cable and a data cable. For example... Figure 1 As shown, the cable includes a core wire 10 and a protective sleeve 20 covering the outside of the core wire.
[0036] The core wire 10 includes a first type of core wire 11 and a second type of core wire 12. The axis of the second type of core wire 12 is parallel to the axis of the first type of core wire 11. The diameter of the second type of core wire 12 is smaller than the diameter of the first type of core wire 11.
[0037] The first type of core wire 11 includes a first core wire 111 and multiple second core wires 112 of the same diameter. The axis of the first core wire 111 and the axis of the second core wire 112 are parallel to each other. The multiple second core wires 112 are arranged around the first core wire 111, and each second core wire 112 is in contact with the first core wire 111 and the protective sleeve 20, and the outer surfaces of adjacent second core wires 112 are in contact with each other.
[0038] Two adjacent second core wires 112 and the protective sleeve 20 form a first gap 31, and a second type of core wire 12 is provided in each first gap 31. Each second type of core wire 12 is in contact with the two adjacent second core wires 112 and with the protective sleeve 20.
[0039] Figure 1 This is a cross-sectional view taken along the radial direction of the cable. It can be understood that when different core wires come into contact with each other, it is the outer surfaces of the core wires that come into contact; when a core wire comes into contact with the protective sheath, it is the outer surface of the core wire that comes into contact with the inner surface of the protective sheath.
[0040] The cable provided in this embodiment has a first core wire 111 located at its center, and multiple second core wires 112 of the same diameter forming a ring structure around the first core wire 111, giving the core group composed of the first core wire 111 and the multiple second core wires 112 good roundness. Embedding smaller diameter second core wires 12 within the first gap 31 fills the gaps between the core wires, further improving the roundness of the cable and making its cross-section closer to an ideal circle. Cables with high roundness experience more uniform stress distribution under stress, reducing local stress concentration and thus lowering the risk of cracking due to bending or compression.
[0041] Furthermore, the second type of core wire 12 is in contact with the adjacent second core wire 112 and the protective sleeve 20. The protective sleeve 20 covers the outside of the core wire and constrains the core wire 10. The contact between the core wires 10 also constrains each other, thereby preventing the core wires 10 from shifting or loosening under external pressure. This helps maintain the stability of the cross-sectional shape of the cable and prevents the roundness of the cable from decreasing due to bending or external force.
[0042] In one embodiment, such as Figure 2 As shown, the core wire 10 also includes a third type of core wire 13. The axis of the third type of core wire 13 is parallel to the axis of the second core wire 112, and the diameter of the third type of core wire 13 is smaller than the diameter of the second type of core wire 12. Each second type of core wire 12, its adjacent second type of core wire 112, and the protective sleeve 20 form a second gap 32. Each second gap 32 contains a third type of core wire 13, and each third type of core wire 13 is in contact with its adjacent second type of core wire 12 and second type of core wire 112.
[0043] The second type of core wire 12 fills the first gap 31, while the third type of core wire 13 fills the second gap 32. Through this progressively smaller diameter filling, the gaps in the cable cross-section are further eliminated, which is more conducive to improving the roundness of the cable cross-section. Furthermore, the inner surface of the protective sleeve 20 constrains the third type of core wire 13, firmly embedding it between the second type of core wire 12 and the second core wire 112, thereby preventing the core wire 10 from shifting under external force.
[0044] In one embodiment, such as Figure 1 and Figure 2 As shown, the first core wire 111 and the second core wire 112 have the same diameter, meaning there are six second core wires 112. These six second core wires 112 can form a tightly arranged ring structure around the first core wire 111, ensuring a uniform circumferential distribution of the second core wires 112, which helps improve the roundness of the cable. Furthermore, having the same diameter for both the first core wire 111 and the second core wire 112 also simplifies the manufacturing process and reduces production costs.
[0045] exist Figure 1In the illustrated embodiment, the cable includes one first core wire 111, six second core wires 112, and six second-type core wires 12; in Figure 2 In the illustrated embodiment, the cable includes one first core wire 111, six second core wires 112, six second-class core wires 12, and twelve third-class core wires 13.
[0046] In other embodiments, the diameter of the second core wire 112 may also be smaller than the diameter of the first core wire 111, but it is necessary to ensure that multiple second core wires 112 are evenly distributed around the first core wire 111 in the circumferential direction.
[0047] In one embodiment, such as Figure 3 As shown, core wire 10 includes a power supply line VBUS, a configuration channel line CC, an auxiliary power supply line VCON, a differential data positive line D+, a differential data negative line D-, a ground line GND, and an auxiliary support line SUP. There can be multiple power supply lines VBUS, ground line GND, and auxiliary support lines SUP, while there is only one configuration channel line CC, one auxiliary power supply line VCON, one differential data positive line D+, and one differential data negative line D-.
[0048] In one embodiment, the power supply line VBUS, configuration channel line CC, auxiliary power supply line VCON, differential data positive line D+, and differential data negative line D- each include a conductor and an insulating layer wrapped around the conductor. The ground line GND may consist only of a conductor, or it may include a conductor and an insulating layer wrapped around the conductor.
[0049] In one embodiment, such as Figure 3 As shown, when the cable includes only Category 1 core wires 11 and Category 2 core wires 12, the Category 1 core wires 11 include multiple power supply lines VBUS, one configuration channel line CC, one auxiliary power supply line VCON, one differential data positive line D+, and one differential data negative line D-, with the differential data positive line D+ and the differential data negative line D- adjacent to each other. The Category 2 core wire 12 is the ground wire GND.
[0050] To meet the requirement of the second core wire 112 being evenly distributed circumferentially around the first core wire 111, the power supply line VBUS can be divided into multiple strands to ensure the roundness of the cable. Figure 3 In the embodiment shown, the diameters of the first type of core wires 11 are all the same, and there are seven first type of core wires 11, including three power supply lines VBUS.
[0051] The multi-strand power supply line VBUS can also support high current transmission to meet fast charging requirements. The stranded design of the power supply line VBUS can also reduce the current density of a single conductor, improving energy efficiency and safety. The grounding wire GND can also be divided into multiple strands, and since the grounding wire GND can consist only of a conductor, it is easy to make the diameter of the grounding wire GND smaller and fill the first gap 31 as a second type of core wire 12.
[0052] In one embodiment, such as Figure 4 As shown, when the cable includes only Category 1 core wires 11 and Category 2 core wires 12, Category 1 core wires 11 include multiple grounding wires GND, one configuration channel wire CC, one auxiliary power supply wire VCON, one differential data positive wire D+, and one differential data negative wire D-, with the differential data positive wire D+ and differential data negative wire D- adjacent to each other. Category 2 core wires 12 are power supply wires VBUS.
[0053] To meet the requirement of the second core wire 112 being evenly distributed circumferentially around the first core wire 111, the grounding wire GND can also be divided into multiple strands to ensure the roundness of the cable. Figure 4 In the illustrated embodiment, all first-type core wires 11 have the same diameter, and there are seven first-type core wires 11, including three grounding wires (GND). The power supply wire VBUS can also be divided into multiple strands with a smaller diameter, so that it can be used as a second-type core wire 12 to fill the first gap 31, thereby improving the roundness of the cable.
[0054] In one embodiment, such as Figure 5 As shown, when the cable includes only Category 1 core wires 11 and Category 2 core wires 12, the Category 1 core wires 11 include one or more power supply lines VBUS, one or more ground lines GND, one configuration channel line CC, one auxiliary power supply line VCON, one differential data positive line D+, and one differential data negative line D-, with the differential data positive line D+ and the differential data negative line D- adjacent to each other. The Category 2 core wires 12 are auxiliary support lines SUP.
[0055] Depending on the roundness requirements of the wiring of the first type of core wire 11, one or more power supply lines VBUS and one or more grounding lines GND can be set. Figure 5 In the embodiment shown, the first type of core wire 11 includes two power supply lines VBUS and one ground line GND.
[0056] The auxiliary support wire SUP is a non-conductive filler wire that does not participate in electrical transmission and only provides mechanical support. Therefore, the auxiliary support wire SUP can be made thinner and filled into the first gap 31 as a second type of core wire 12 to improve the overall roundness of the cable.
[0057] In other embodiments, the first type of core wire 11 may include one or more of the following: power supply line VBUS, ground line GND, or auxiliary support line SUP. The second type of core wire 21 may include one or more of the following: power supply line VBUS, ground line GND, or auxiliary support line SUP.
[0058] In one embodiment, such as Figure 6 As shown, when the cable includes only Category 1 core wire 11, Category 2 core wire 12, and Category 3 core wire 13, Category 1 core wire 11 includes a power supply line VBUS, a configuration channel line CC, an auxiliary power supply line VCON, a differential data positive line D+, and a differential data negative line D-, with the differential data positive line D+ and the differential data negative line D- adjacent. Category 2 core wire 12 is either a ground line GND or an auxiliary support line SUP, and Category 3 core wire 13 is either a ground line GND or an auxiliary support line SUP.
[0059] The grounding wire GND and the auxiliary support wire SUP can be made thinner, and can be used as the second type of core wire 12 to fill the first gap 31, or as the third type of core wire 13 to fill the second gap 32, so as to improve the overall roundness of the cable.
[0060] Preferably, the first type of core wire 11 includes a power supply line VBUS, a configuration channel line CC, an auxiliary power supply line VCON, a differential data positive line D+, and a differential data negative line D-; the second type of core wire 12 is a ground line GND; and the third type of core wire 13 is an auxiliary support line SUP. The space of the second gap 32 is relatively small, and the auxiliary support line SUP is a non-conductive filler wire that does not participate in electrical transmission, only providing mechanical support. Even if it is made smaller, its performance is not affected, making it more suitable as the third type of core wire 13 with the smallest diameter.
[0061] In another embodiment, such as Figure 7 As shown, the first type of core wire includes a ground wire (GND), a configuration channel wire (CC), an auxiliary power supply wire (VCON), a differential data positive wire (D+), and a differential data negative wire (D-), with the differential data positive wire (D+) and the differential data negative wire (D-) adjacent to each other. The second type of core wire is either a power supply wire (VBUS) or an auxiliary support wire (SUP), and the third type of core wire is either a power supply wire (VBUS) or an auxiliary support wire (SUP).
[0062] The power supply wire VBUS can be divided into multiple strands, which can be filled in the first gap 31 as the second type of core wire 12, or filled in the second gap 32 as the third type of core wire 13, in order to improve the overall roundness of the cable.
[0063] In other embodiments, the first type of core wire 11 may include one or more of the power supply line VBUS, the ground line GND, or the auxiliary support line SUP. The second type of core wire 12 may include one or more of the power supply line VBUS, the ground line GND, or the auxiliary support line SUP. The third type of core wire 13 may include one or more of the power supply line VBUS, the ground line GND, or the auxiliary support line SUP. No specific limitations are imposed here.
[0064] In the above embodiments, in the first type of core wire 11, except that the differential data positive line D+ and the differential data negative line D- must be arranged adjacently to form a compact differential signal pair, the specific types and arrangement positions of the other first type of core wires 11 are not specifically limited.
[0065] In one embodiment, when the first type of core wire 11 includes a ground wire GND, the ground wire GND includes a conductor and an insulating layer wrapped around the conductor. Since the power supply line VBUS, configuration channel line CC, auxiliary power supply line VCON, differential data positive line D+, and differential data negative line D- each include a conductor and an insulating layer wrapped around the conductor, having the ground wire GND include a conductor and an insulating layer wrapped around the conductor facilitates a uniform diameter for the first type of core wire 11.
[0066] In one embodiment, the core wires 10 are twisted together. Twisting the core wires 10 means that the core wires are wound together in a spiral manner to form a compact and stable core wire structure, so that the stress of each core wire 10 is more even during bending, stretching or twisting, and avoids the single core wire from being subjected to concentrated stress and thus breaking.
[0067] In one embodiment, such as Figure 1 As shown, the protective sleeve 20 includes an outer sheath 23, a first braided layer 21a, and a second braided layer 22a. The second braided layer 22a is located on the side of the first braided layer 21a away from the core wire 10. The braided threads of the first braided layer 21a and the braided threads of the second braided layer 22a are interwoven, and the outer sheath 23 is located on the side of the second braided layer 22a away from the first braided layer 21a.
[0068] The first braided layer 21a and the second braided layer 22a are cross-braided to form a mesh electromagnetic shielding layer. The cross-braiding also prevents the outer sheath material from penetrating into the braided layer during manufacturing and forming hard spots, thus avoiding a decrease in the roundness of the cable. Furthermore, the arrangement of the first braided layer 21a and the second braided layer 22a helps to reduce the stiffness of the cable.
[0069] In one embodiment, such as Figure 2As shown, the protective sleeve 20 includes an outer sheath 23, a braided layer 22b, and a wrapping tape layer 21b. The braided layer 22b is located on the side of the wrapping tape layer 21b away from the core wire 10, and the outer sheath 23 is located on the side of the braided layer 22b away from the wrapping tape layer 21b. The wrapping tape layer 21b can reflect external electromagnetic waves and absorb electromagnetic radiation generated by internal signals, preventing external interference from affecting the signal transmission quality of the core wire and also preventing the core wire itself from becoming a source of interference.
[0070] This application also provides a data cable, which includes a first connector, a second connector, and the aforementioned cable, wherein the cable is used for electrically connecting the first connector and the second connector. The data cable may be a USB data cable, and the first connector and the second connector may be configured as USB Type-C connectors.
[0071] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A cable, characterized by The cable includes a core wire and a protective sleeve covering the outside of the core wire; The core wire includes a first type of core wire and a second type of core wire; the axis of the second type of core wire is parallel to the axis of the first type of core wire; the diameter of the second type of core wire is smaller than the diameter of the first type of core wire. The first type of core wire includes a first core wire and multiple second core wires of the same diameter; the axis of the first core wire and the axis of the second core wire are parallel to each other; multiple second core wires are arranged around the first core wire, and each second core wire is in contact with the first core wire and the protective sleeve, and the outer surfaces of adjacent second core wires are in contact with each other; Two adjacent second core wires and the protective sleeve form a first gap, and a second type of core wire is provided in each first gap; each second type of core wire is in contact with two adjacent second core wires and with the protective sleeve.
2. The cable of claim 1, wherein, The core wire also includes a third type of core wire; the axis of the third type of core wire is parallel to the axis of the second core wire; the diameter of the third type of core wire is smaller than the diameter of the second type of core wire; Each of the second type core wires, its adjacent second core wire, and the protective sleeve form a second gap, and each of the second gaps contains one of the third type core wires; each of the third type core wires is in contact with its adjacent second type core wire and second core wire.
3. The cable according to claim 2, characterized in that, The first type of core wire includes a power supply line, a configuration channel line, an auxiliary power supply line, a differential data positive line, and a differential data negative line; the differential data positive line and the differential data negative line are adjacent to each other; the second type of core wire is either a grounding line or an auxiliary support line; the third type of core wire is either a grounding line or an auxiliary support line. Alternatively, the first type of core wire includes a ground wire, a configuration channel wire, an auxiliary power supply wire, a differential data positive wire, and a differential data negative wire; the differential data positive wire and the differential data negative wire are adjacent; the second type of core wire is either a power supply wire or an auxiliary support wire; and the third type of core wire is either a power supply wire or an auxiliary support wire.
4. The cable according to claim 1, characterized in that, The first type of core wire includes a power supply line, a configuration channel line, an auxiliary power supply line, a differential data positive line, and a differential data negative line; the differential data positive line and the differential data negative line are adjacent to each other; the second type of core wire is a grounding line; Alternatively, the first type of core wire includes a ground wire, a configuration channel wire, an auxiliary power supply wire, a differential data positive wire, and a differential data negative wire; the differential data positive wire and the differential data negative wire are adjacent; the second type of core wire is a power supply wire.
5. The cable according to claim 1, characterized in that, The first type of core wire includes a power supply wire, a grounding wire, a configuration channel wire, an auxiliary power supply wire, a differential data positive wire, and a differential data negative wire; the differential data positive wire and the differential data negative wire are adjacent to each other; the second type of core wire is an auxiliary support wire.
6. The cable according to claim 5, characterized in that, The grounding wire includes a conductor and an insulating layer wrapped around the outside of the conductor.
7. The cable according to claim 1, characterized in that, The protective sleeve includes an outer layer, a first braided layer, and a second braided layer; The second braided layer is located on the side of the first braided layer away from the core wire; the braided threads of the first braided layer and the braided threads of the second braided layer are interwoven; the outer sheath layer is located on the side of the second braided layer away from the first braided layer.
8. The cable according to claim 1, characterized in that, The protective sleeve includes an outer sheath, a braided layer, and a wrapping layer, wherein the braided layer is located on the side of the wrapping layer away from the core wire; and the outer sheath is located on the side of the braided layer away from the wrapping layer.
9. The cable according to claim 1, characterized in that, The core wires are twisted together.
10. A data cable, characterized in that, The data cable includes a first connector, a second connector, and a cable as described in any one of claims 1 to 9, wherein the cable is used to electrically connect the first connector and the second connector.