An ultra-sixth category non-shielded communication cable

Abstract

The utility model relates to communication cable technical field discloses a kind of super six kinds of unshielded communication cable, comprising: outer sheath, inner sheath and twisted pair, inner sheath inner wall is equipped with inner tooth, inner sheath inside is equipped with cross skeleton, inner sheath and cross skeleton between are equipped with twisted pair, inner sheath outer wall is equipped with outer tooth, outer tooth between is equipped with gap, inner sheath outside is equipped with outer sheath, the outer wall of cross skeleton is equipped with reinforcing rib plate, the recess of the utility model inner tooth can disperse the stress when cable bending, cooperate cross skeleton and reinforcing rib plate, prevent twisted pair displacement or deformation, maintain the long-term stability of transmission characteristic, while the inner tooth of discrete distribution increases the friction of sheath and line pair, promote the tensile capacity of cable whole, applicable to complex wiring environment.

Description

Technical Field

[0001] This utility model relates to the field of communication cable technology, specifically to a Category 6a unshielded communication cable. Background Technology

[0002] Category 6e unshielded communication cable is a high-performance unshielded twisted pair cable used for high-speed data transmission in network cabling systems. It is an upgraded version of Category 6 cable and is designed to meet the needs of higher bandwidth and longer transmission distance.

[0003] A Chinese patent (CN212256974U) discloses a heterogeneous filled Category 6a unshielded symmetrical data communication cable, comprising four twisted pairs, a crossbar, with the four twisted pairs located in the four slots of the crossbar; round bars symmetrically arranged on both sides of the crossbar; a sheath layer, with the twisted pairs, crossbar, and round bars all located within the sheath layer; and a sheath layer located outside the sheath layer. This utility model provides a heterogeneous filled Category 6a unshielded symmetrical data communication cable that achieves a relatively stable structure and more stable performance through the combination of the crossbar and round bars. It also allows for a smaller wire diameter, reducing costs. While meeting Category 6a performance requirements, it offers a greater price advantage and market competitiveness compared to traditional designs, and it is also easier to install.

[0004] When existing Category 6a unshielded communication cables are used, the twisted pairs inside the cable lack protection during wiring, which can easily cause displacement or deformation, affecting the long-term stability of its transmission characteristics. Utility Model Content

[0005] The purpose of this invention is to provide a Category 6a unshielded communication cable to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a Category 6a unshielded communication cable, comprising: an outer sheath, an inner sheath, and twisted pairs; the inner sheath has internal teeth on its inner wall, a cross skeleton is provided inside the inner sheath, and twisted pairs are provided between the inner sheath and the cross skeleton; the outer wall of the inner sheath has external teeth, and gaps are provided between the external teeth; an outer sheath is provided on the outer side of the inner sheath, and reinforcing ribs are provided on the outer wall of the cross skeleton.

[0007] Furthermore, there are multiple reinforcing ribs, which are arranged at equal intervals on the cross-shaped frame.

[0008] Furthermore, the reinforcing rib has a groove on the side near the twisted pair, and the cross-section of the reinforcing rib is V-shaped.

[0009] Furthermore, the gaps inside the inner sheath are filled with waterproof grease.

[0010] Furthermore, the internal teeth are discretely distributed on the inner wall of the inner sheath, and the arc distance between any two adjacent internal teeth may be equal or unequal.

[0011] Furthermore, the distance between the tooth tip and tooth root of the internal tooth is 0.2mm-0.4mm, and the spacing between two internal teeth is 0.4mm-0.6mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model, through the design of internal teeth, cross skeleton, and tooth gaps, enables the internal teeth to disperse the stress when the cable is bent during use. Combined with the cross skeleton and reinforcing ribs, it prevents the twisted pair from shifting or deforming, maintaining the long-term stability of transmission characteristics. At the same time, the discretely distributed internal teeth increase the friction between the sheath and the wire pair, improving the overall tensile strength of the cable, making it suitable for complex wiring environments.

[0014] In addition, the raised portion of the internal teeth can shield some external electromagnetic fields, reduce the interference of external noise on the wire pair signal, such as reducing the contribution of external noise in NEXT, reducing radiation leakage inside the cable by limiting the electromagnetic coupling between twisted pairs, and improving the overall EMC performance.

[0015] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0016] Figure 1 This is a front view of a Category 6A unshielded communication cable according to this utility model;

[0017] Figure 2 This is a perspective view of a Category 6A unshielded communication cable according to the present invention.

[0018] Figure 3 This is a left view of a Category 6A unshielded communication cable according to the present invention.

[0019] Figure 4 This is a perspective view of another aspect of the Category 6A unshielded communication cable of this utility model.

[0020] In the diagram: 1. Outer sheath; 2. Inner sheath; 3. Gap; 4. Inner teeth; 5. Cross-shaped frame; 6. Twisted pair; 7. Reinforcing rib. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figures 1-4 This utility model provides a technical solution: a Category 6 unshielded communication cable, comprising: an outer sheath 1, an inner sheath 2, and twisted pairs 6. The inner sheath 2 has internal teeth 4 on its inner wall. The outer sheath 1 is typically made of low-smoke halogen-free polyolefin (LSZH) or polyvinyl chloride (PVC). The outer sheath 1 serves as the outermost layer of protection, resisting external physical damage and chemical corrosion, and extending the cable's service life. The inner sheath 2 has a cross-shaped frame 5 inside, with twisted pairs 6 between the inner sheath 2 and the cross-shaped frame 5. The outer wall of the inner sheath 2 has external teeth, with tooth gaps 3 between the teeth. The outer sheath 1 is located on the outside of the inner sheath 2, and the outer wall of the cross-shaped frame 5 has reinforcing ribs 7. The inner sheath 2 is made of high-density polyethylene (HDPE) or polypropylene (PP), possessing flexibility and anti-aging properties. This inner layer further isolates external interference while protecting internal structures such as the cross-shaped frame 5 and twisted pairs 6 from mechanical stress damage. The internal teeth 4 are made of the same material as the inner sheath 2. When the cable bends, the grooves of the inner teeth 4 distribute stress to multiple contact points, preventing localized stress concentration that could lead to deformation of the twisted pair 6 (such as loosening of wire pairs or changes in spacing), thereby stabilizing transmission characteristics (such as attenuation and crosstalk). The tooth gaps 3 provide a certain amount of elastic space on the outer wall of the inner sheath 2. When the cable bends, the outer teeth can approach each other, reducing the tooth gaps and thus decreasing the friction and resistance between the inner and outer sheaths. This makes the cable easier to bend and pass through narrow channels, reducing the difficulty of wiring. Furthermore, the tooth gaps 3 can disperse bending stress to a certain extent, ensuring that the stress is evenly distributed on the outer wall of the inner sheath 2, preventing stress concentration at a certain point or in a certain area. This improves the bending resistance of the inner sheath 2 and extends the service life of the cable.

[0023] The cross-shaped frame 5 is made of polycarbonate (PC) or ABS plastic, offering high rigidity and heat resistance. It separates the four twisted pairs 6 into four quadrants, maintaining a constant spacing between pairs, reducing capacitive / inductive coupling, and directly lowering near-end crosstalk (NEXT) and far-end crosstalk (FEXT).

[0024] There are multiple reinforcing ribs 7, which are arranged at equal intervals on the cross frame 5. The reinforcing ribs 7 are made of the same material as the cross frame 5, with a V-shaped cross section and wire grooves. The multiple equally spaced reinforcing ribs 7 enhance the torsional resistance of the cross frame 5, preventing structural damage caused by cable twisting during installation or use.

[0025] The reinforcing rib 7 has a groove on the side near the twisted pair 6, and the cross-section of the reinforcing rib 7 is V-shaped. The V-shaped groove can hold the twisted pair 6 in place, further fixing the position of the wire pair and preventing the wire pair from loosening due to vibration or temperature changes.

[0026] The gaps inside the inner sheath 2 are filled with waterproof grease. The grease is made of silicone oil-based or polyethylene wax-based waterproof compound. Filling the gaps inside the inner sheath 2 prevents moisture from seeping into the twisted pair 6 area, avoiding decreased insulation performance or increased signal attenuation due to moisture. The grease's flexibility absorbs mechanical shock, reducing damage to the twisted pair 6 from cable vibration and extending its service life.

[0027] The inner teeth 4 are discretely distributed on the inner wall of the inner sheath 2, and the arc distance between any two adjacent inner teeth 4 can be equal or unequal. The discretely distributed inner teeth 4 increase the friction area between the sheath and the twisted pair 6, and together with the tooth gap 3, significantly improve the cable's tensile strength. The raised parts of the inner teeth 4 form a micro-shielding layer, partially blocking external electromagnetic fields (such as interference from nearby cables), reducing the contribution of external noise in near-end crosstalk (NEXT), and improving EMC performance. The design that allows for equal or unequal arc distances allows for adjustment of the inner tooth position according to the layout of the twisted pair 6, optimizing space utilization.

[0028] The distance between the tooth tip and tooth root of internal tooth 4 is 0.2mm-0.4mm, and the spacing between two internal teeth 4 is 0.4mm-0.6mm.

[0029] When used in communication cables, the grooves of the inner teeth 4 can disperse the stress when the cable is bent. Together with the cross skeleton 5 and the reinforcing ribs 7, they can prevent the twisted pair 6 from shifting or deforming, and maintain the long-term stability of the transmission characteristics. At the same time, the discretely distributed inner teeth 4 increase the friction between the sheath and the wire pair, and improve the overall tensile strength of the cable, making it suitable for complex wiring environments.

[0030] In addition, the raised portion of the inner tooth 4 can shield some external electromagnetic fields, reduce the interference of external noise on the wire pair signal, such as reducing the contribution of external noise in NEXT, and reducing radiation leakage inside the cable by limiting the electromagnetic coupling between the twisted pairs 6, thereby improving the overall EMC performance.

[0031] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A Category 6A unshielded communication cable, comprising: The outer sheath (1), inner sheath (2), and twisted pair (6) are characterized in that: the inner sheath (2) has internal teeth (4) on its inner wall, the inner sheath (2) has a cross skeleton (5) inside, the inner sheath (2) and the cross skeleton (5) have a twisted pair (6) between them, the outer sheath (2) has external teeth on its outer wall, the external teeth have a tooth gap (3) between them, the outer sheath (1) is provided on the outer side of the inner sheath (2), and the outer wall of the cross skeleton (5) has a reinforcing rib (7).

2. The Category 6a unshielded communication cable according to claim 1, characterized in that: There are multiple reinforcing ribs (7), and the multiple reinforcing ribs (7) are arranged at equal intervals on the cross frame (5).

3. The Category 6a unshielded communication cable according to claim 2, characterized in that: The reinforcing rib (7) has a groove on the side near the twisted pair (6), and the cross-section of the reinforcing rib (7) is V-shaped.

4. The Category 6a unshielded communication cable according to claim 1, characterized in that: The gaps inside the inner sheath (2) are filled with waterproof grease.

5. The Category 6a unshielded communication cable according to claim 1, characterized in that: The inner teeth (4) are discretely distributed on the inner wall of the inner sheath (2), and the arc distance between any two adjacent inner teeth (4) may be equal or unequal.

6. The Category 6a unshielded communication cable according to claim 1, characterized in that: The distance between the tooth tip and tooth root of the internal tooth (4) is 0.2mm-0.4mm, and the distance between two internal teeth (4) is 0.4mm-0.6mm.

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