TWM643422U - multi-channel cable assembly - Google Patents

Abstract

The present invention is a multi-channel cable assembly. The multi-channel cable assembly includes multiple four-channel secondary cables and an outer jacket. Each of the four-channel secondary cables includes four coaxial cables and a shielding layer. The four coaxial cables respectively have a conductor core wire, an insulating layer and a metal foil Mylar layer. The insulating layer is wrapped on the conductor core wire, the metal foil Mylar layer is wrapped on the insulating layer, and the sections of the four coaxial cables are arranged in a rectangular array. The shield is wrapped around the four coaxial cables. The outer sheath surrounds and forms a sheath space. A plurality of four-channel secondary cables are threaded in the sheath space.

Description

multi-channel cable assembly

The present invention relates to a multi-channel cable, in particular to a multi-channel cable assembly using coaxial cables arranged in a rectangular array.

The application environment is increasingly demanding to increase the transmission signal rate, and the cable or cable adopts multi-channel mode to transmit data to increase the amount of data that can be transmitted.

Multi-channel is achieved by multiple transmission wires, and the arrangement of multiple transmission wires is roughly as follows.

First, a plurality of transmission wires are arranged in parallel and parallel to form a flat cable. Among the multiple transmission wires connected in parallel, the pitch can fully match the contacts on the circuit board. However, the flat cable is only suitable for bending in a single direction, which is not conducive to the insertion of the flat cable.

Second, twist multiple transmission wires into a single strand. During the twisting process, it is not easy to maintain the same twist of each transmission wire. Therefore, in the same twisted wire, the length of the transmission wire will be different, resulting in inconsistent impedance, which in turn affects the length matching. In addition, twisted transmission wires are also prone to crosstalk. When soldering a plurality of transmission wires to a circuit board, it is also necessary to arrange the transmission wires with a comb so that the distance between the ends of the transmission wires matches the contacts on the circuit board, which increases additional man-hours.

Another twisting method is to use a pair of transmission wires, such as a Tx wire and an Rx wire, as a twisted pair. Twisted pair wires reduce the problem of length differences, but still require combing the transmission wires to achieve the required spacing, which also adds additional man-hours.

In order to solve the problems existing in the prior art, the present invention provides a multi-channel cable assembly, including multiple four-channel sub-cables and an outer sheath. Each of the four-channel secondary cables includes four coaxial cables and a shielding layer. The four coaxial cables respectively have a conductor core wire, an insulating layer and a metal foil Mylar layer. The insulating layer wraps the conductor core wire, the metal foil Mylar layer wraps the insulating layer, and the cross sections of the four coaxial cables are arranged in a rectangular array. The shield is wrapped around the four coaxial cables. The outer sheath surrounds and forms a sheath space. A plurality of four-channel secondary cables are threaded in the sheath space.

In at least one embodiment of the present invention, the number of the multiple four-channel secondary cables is four, and the cross-sections of the four four-channel secondary cables are arranged in a rectangular array.

In at least one embodiment of the present invention, the multi-channel cable assembly further includes a plurality of spacer filler wires, respectively threaded in the area surrounded by four four-channel secondary cables, and the area surrounded by two adjacent four-channel secondary cables and the outer sheath, so as to ensure the circularity of the outer sheath.

In at least one embodiment of the present invention, each shielding layer includes an outer metal foil Mylar layer and a metal conductor layer. The outer foil Mylar wraps around the four coaxial cables. The metal conductor layer is coated on the outer metal foil Mylar layer.

In at least one embodiment of the present invention, the metal conductor layer is a metal braiding layer.

In at least one embodiment of the present invention, the metal conductor layer is formed by wrapping metal wires on the outside of the outer metal foil Mylar layer through helical winding.

In at least one embodiment of the present invention, the metal foil Mylar layer wraps the four coaxial cables in a helical wrapping manner or in a longitudinal wrapping manner.

In at least one embodiment of the present invention, each of the four-channel secondary cables further includes two drains of ground wires, each of which is combined with a pair of coaxial cables.

With the above combination, the present invention avoids the twisting of the coaxial cables, so that the lengths of the multiple coaxial cables will not be too large, and the transmission impedance will be avoided from being too large. At the same time, although a comb must be configured when soldering the coaxial cable to the circuit board, the spacing of the coaxial cable matches the spacing of the soldering points on the circuit board, which is beneficial to the quality of simultaneous multi-point welding. At the same time, the coaxial cables are not twisted, which also reduces the mutual interference between the coaxial cables.

1: Multi-channel cable assembly

110: Four-channel secondary cable

112: coaxial cable

112a: conductor core wire

112b: insulating layer

112c: metal foil mylar layer

114: shielding layer

114a: External metal foil mylar layer

114b: metal conductor layer

118: drain ground wire

120: Outer sheath

130: Spacing filling line

[ Fig. 1 ] is a schematic cross-sectional view of an embodiment of the new multi-channel cable assembly.

[ FIG. 2 ] is a schematic cross-sectional view of a four-channel secondary cable in an embodiment of the present invention.

[ Fig. 3 ] is a schematic cross-sectional view of a coaxial cable in an embodiment of the present invention.

[ FIG. 4 ] is another schematic cross-sectional view of an embodiment of the new multi-channel cable assembly.

[ Fig. 5 ] is another schematic cross-sectional view of an embodiment of the new multi-channel cable assembly.

Please refer to FIG. 1 , which is a multi-channel cable assembly 1 proposed by the embodiment of the present invention. As shown in FIG. 1 , the multi-channel cable assembly 1 includes a plurality of four-channel secondary cables 110 and an outer sheath 120 .

As shown in FIGS. 1 and 2 , each four-channel secondary cable 110 includes four coaxial cables 112 and a shielding layer 114 . The sections of the four coaxial cables 112 are arranged in a 2x2 rectangular array, and the four coaxial cables The axial cables 112 are arranged in parallel without twisting, so as to ensure that the four coaxial cables 112 have the same or similar lengths in the multi-channel cable assembly 1 to facilitate the length matching of the coaxial cables 112 .

As shown in FIG. 2 and FIG. 3 , each coaxial cable 112 has a conductor core 112a, an insulating layer 112b and a metallic Mylar foil layer 112c (metallic Mylar foil layer), and the insulating layer 112b covers the conductor core 112a. The insulating layer 112b can be a plastic layer coated on the conductor core wire 112a through extrusion molding, but does not exclude the insulating tape wrapped on the outside of the conductor core wire 112a by spiral winding or longitudinal wrapping. The metal foil film Mylar layer 112c is coated on the insulating layer 112b, thus forming the coaxial cable 112 with a single core. Two single-core coaxial cables 112 can be configured in pairs.

As shown in FIGS. 1 and 2 , the shielding layer 114 covers the four coaxial cables 112 . The shielding layer 114 can be a single-layer structure or a multi-layer structure, and includes structures such as metal conductors to form a Faraday cage, so that the conductor core wire 112a can transmit signals without interference, and also prevent the conductor core wire 112a from interfering with the surroundings during signal transmission.

As shown in FIGS. 1 and 2 , specifically, each shielding layer 114 includes an outer metal foil Mylar layer 114 a and a metal conductor layer 114 b. The outer metal foil Mylar layer 114 a covers the four coaxial cables 112 . The metal conductor layer 114b is coated on the outer metal foil Mylar layer 114a. The outer metal foil Mylar layer 114 a can be wrapped around the four coaxial cables 112 in a helical wrapping manner or in a longitudinal wrapping manner. The metal conductor layer 114b can be made of metal wires of high-conductivity materials, such as copper wires. Specifically, metal wires such as copper wires can be wrapped in a spiral winding manner outside the outer metal foil Mylar layer 114a to form the metal conductor layer 114b; The metal conductor layer 114b may also be a composite structure in which metal wires are helically wound and a metal mesh is woven at the same time.

As shown in FIGS. 1 and 2 , in addition, each of the four-channel secondary cables 110 further includes two drain wires 118 (drain wires), and each drain wire 118 is combined with a pair of coaxial cables 112 arranged in pairs, especially the metal foil Mylar layer 112c combined with the pair of coaxial cables 112.

As shown in FIG. 1 , the outer sheath 120 surrounds and forms a sheath space. A plurality of four-channel secondary cables 110 are threaded in the sheath space. The outer sheath 120 mainly provides functions such as insulation and waterproofing, and improves the mechanical strength of the multi-channel cable assembly 1 . Optionally, the material of the outer sheath 120 is any one of the following: polyvinyl chloride (PVC), low density polyethylene (LDPE), fluorinated ethylene propylene copolymer (FEP) or thermoplastic elastomer (TPE).

Specifically, the number of the plurality of four-channel secondary cables 110 is four, and the cross-sections of the four four-channel secondary cables 110 are arranged in a 2×2 rectangular array. Meanwhile, the four coaxial cables 112 in the four-channel secondary cable 110 can also be arranged in the same relative position configuration.

As shown in FIGS. 4 and 5 , further, the multi-channel cable assembly 1 can be configured in pairs, and the outer sheaths 120 are fused together to form a multi-channel cable with eight pairs of twin wires (that is, 16 coaxial cables 112 ). As shown in FIG. 4 , since the sections of the four coaxial cables 112 of each four-channel sub-cable 110 are arranged in a 2x2 rectangular array, and the four coaxial cables 112 in the four-channel sub-cable 110 are arranged in the same relative position configuration. Therefore, the insulation layer 112b/metal foil Mylar layer 112c is stripped at the same time each time, and two pairs of coaxial cables 112 (i.e. four coaxial cables 112) can be simultaneously stripped with a knife to strip the insulation layer 112b/metal foil Mylar layer 112c each time, and only need to be cut four times in total.

As shown in FIG. 2 and FIG. 3 , in order to maintain the arrangement of the four four-channel sub-cables 110 , the multi-channel cable assembly 1 further includes a plurality of spacer filler wires 130 , which respectively pass through the area surrounded by the four four-channel sub-cables 110 and the area surrounded by two adjacent four-channel sub-cables 110 and the outer sheath 120 . space fill The filling wire 130 is used to ensure the circularity of the outer sheath 120 and also maintain the four-channel secondary cables 110 in a 2×2 rectangular array.

Through the above combination, the present invention avoids the twisting of the coaxial cables 112, so that the lengths of the multiple coaxial cables 112 will not be too large, and the transmission impedance will be avoided from being too large. At the same time, although a comb must be configured when soldering the coaxial cable 112 to the circuit board, the spacing of the coaxial cable 112 matches the spacing of the soldering points on the circuit board, which is beneficial to the quality of simultaneous multi-point welding. At the same time, the coaxial cables 112 are not twisted, which also reduces the mutual interference between the coaxial cables 112 .

The above is only one of the preferred embodiments of the present invention, and is not used to limit the scope of the present invention, that is, all changes and modifications made according to the shape, structure, characteristics and spirit described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

1: Multi-channel cable assembly

110: Four-channel secondary cable

120: Outer sheath

130: Spacing filling line

Claims (8)

A multi-channel cable assembly comprising: a plurality of four-channel secondary cables, each of the four-channel secondary cables comprising: Four coaxial cables respectively have a conductor core wire, an insulating layer and a metal foil Mylar layer, the insulating layer covers the conductor core wire, the metal foil Mylar layer covers the insulating layer, and the cross-sections of the four coaxial cables are arranged in a rectangular array; and a shield covering the four coaxial cables; and An outer sheath surrounds and forms a sheath space; wherein, the plurality of four-channel secondary cables pass through the sheath space. The multi-channel cable assembly as claimed in claim 1, wherein the number of the plurality of four-channel secondary cables is four, and the cross-sections of the four four-channel secondary cables are arranged in a rectangular array. The multi-channel cable assembly as described in claim 2 further includes a plurality of spacer filler wires, respectively threaded in the area surrounded by the four four-channel sub-cables, and the area surrounded by two adjacent four-channel sub-cables and the outer sheath, so as to ensure the circularity of the outer sheath. The multi-channel cable assembly as claimed in item 1, wherein each shielding layer comprises: an outer metal foil Mylar layer covering the four coaxial cables; and A metal conductor layer is coated on the metal foil Mylar layer. The multi-channel cable assembly as claimed in claim 4, wherein the metal conductor layer is a metal braiding layer. The multi-channel cable assembly as claimed in claim 4, wherein the metal conductor layer is formed by wrapping metal wires on the outside of the outer metal foil Mylar layer through spiral winding. The multi-channel cable assembly as claimed in claim 4, wherein the outer metal foil Mylar layer wraps the four coaxial cables in a spiral winding wrapping manner or in a longitudinal wrapping manner. The multi-channel cable assembly as claimed in claim 1, wherein each of the four-channel secondary cables further includes two drain ground wires, and each of the drain ground wires is combined with a pair of coaxial cables.