Outdoor underground Ethernet data cable

Abstract

The present application discloses an outdoor buried Ethernet data cable, in which two pairs of four twisted pairs are located at the central axis of the Ethernet data cable to form an internal twisted wire group, and the other two pairs of the four twisted pairs are wound into a cable around the outer periphery of the internal twisted wire group to form an external twisted wire group, and the pitch diameter ratio of the twisted pairs in the external twisted wire group is 1.2 to 3 times the pitch diameter ratio of the twisted pairs in the internal twisted wire group; the outdoor buried Ethernet data cable provided by the utility model has four pairs of twisted pairs twisted together to form a frame, eliminating the need for the introduction of a skeleton; the pitch diameter of the twisted pairs in the internal twisted wire group is relatively small, providing a certain structural strength, which is beneficial to the cabling process of the external twisted wire group; the deformation of the two pairs of twisted pairs in the external twisted wire group is small, thereby improving the data transmission performance; because the pitch diameter ratio of the external twisted wire group and the internal twisted wire group is different, and the internal twisting direction is opposite, the signal loss caused by the deformation of the cable due to the ground resonance pressure is eliminated.

Description

Technical Field

[0001] The utility model relates to the field of cable structures, in particular to an outdoor buried Ethernet data cable. Background Art

[0002] With the rapid development of intelligent control in buildings, home courtyards, parks, etc., Ethernet data cables still play an important role in the current era of advanced wireless data transmission due to the stability of transmission. Outdoor buried Ethernet data cables are one of the indispensable infrastructures in the field of modern communications. In today's digital and networked world, stable and high-speed data transmission is crucial to all walks of life. Therefore, it is particularly important to choose an outdoor buried Ethernet data cable with excellent performance and reliable quality.

[0003] Outdoor buried Ethernet data cables have many advantages, the first of which is its excellent durability. Made of high-quality materials, the outer layer of the cable has excellent weather resistance and can resist the erosion of natural environments such as sunlight, rain, wind and snow, ensuring long-term stable operation. In addition, the cable interior adopts a sophisticated structural design to effectively reduce signal attenuation and interference, ensuring the stability and high speed of data transmission.

[0004] In the process of laying cables, there are two ways, one is to lay them underground, in addition to overhead. In the process of laying cables underground, you can first lay out pipelines underground, and then lay out various cables in the pre-buried pipelines, or you can lay out various cables directly underground.

[0005] When ordinary Ethernet data cables are used in underground environments, there is resonance due to the passing of vehicles and pedestrians on the ground. The structure of the data cables is prone to change or the conductor is broken under the pressure of resonance. At the same time, the underground environment is also a challenge to the normal use of data cables. Underground rats and ants can easily bite through the cable skin, causing water ingress and short circuits. Utility Model Content

[0006] The main purpose of the utility model is to provide an outdoor buried Ethernet data cable, aiming to solve the problem that when the Ethernet data cable is used in an underground environment, there is resonance due to the passage of ground vehicles, pedestrians, etc., and the structure of the data cable is easily changed under the pressure of resonance, thereby affecting signal transmission.

[0007] In order to achieve the above-mentioned object, the utility model provides an outdoor buried Ethernet data cable, comprising:

[0008] A twisted pair group, comprising four pairs of twisted pairs, wherein the twisted pairs are formed by twisting two sub-wires, wherein the sub-wires include a twisted conductor and an insulating layer wrapping the conductor, wherein two pairs of the four pairs of twisted pairs are located at the central axis of the Ethernet data cable to form an internal twisted wire group, and the other two pairs of the four pairs of twisted pairs are wound into cables around the periphery of the internal twisted wire group to form an external twisted wire group, wherein the pitch diameter ratio of the twisted pairs in the external twisted wire group is 1.2 to 3 times the pitch diameter ratio of the twisted pairs in the internal twisted wire group, wherein the twisting directions of the two pairs of twisted pairs in the external twisted wire group are opposite, and the twisting directions of the two pairs of twisted pairs in the internal twisted wire group are opposite, wherein the twisted pairs have a backtwist of 50% to 80%, and the external twisted wire group is wound into a cable around the periphery of the internal twisted wire group to have a backtwist of 70% to 90%;

[0009] An inner lining layer wrapping the plurality of twisted pair wire groups;

[0010] An armor layer, wrapped around the inner lining layer;

[0011] The outer sheath is wrapped around the armor layer.

[0012] Furthermore, the pitch diameter ratio of one twisted pair in the internal twisted wire group is 1.2 to 1.5 times that of the other; and the pitch diameter ratio of one twisted pair in the external twisted wire group is 1.2 to 1.5 times that of the other.

[0013] Furthermore, the pitch diameter ratios of the two pairs of twisted wires in the internal twisted wire group are 3.8 and 4.8 respectively.

[0014] Furthermore, the pitch diameter ratios of the two pairs of twisted wires in the external twisted wire group are 5.8 and 6.3 respectively.

[0015] Furthermore, the conductor is galvanized copper.

[0016] Furthermore, the twisted pair wire group is wrapped with a water-blocking tape layer, the inner lining layer wraps the water-blocking tape layer, and the water-blocking tape layer is filled with dry oil paste.

[0017] Furthermore, the outer sheath is made of linear low-density polyethylene.

[0018] Furthermore, the armor layer is woven from 0.15 to 0.20 mm soft galvanized steel wires, and the weaving density is ≥90%.

[0019] Furthermore, the material of the inner lining layer is high-density polyvinyl chloride.

[0020] Furthermore, the twisted pair has a backtwist of 60%, and the outer twisted wire group is wound into a cable around the outer periphery of the inner twisted wire group and has a backtwist of 80%.

[0021] The utility model provides an outdoor buried Ethernet data cable, in which four pairs of twisted wires are twisted together to form a frame, and the introduction of a skeleton is eliminated; the pitch diameter of the twisted wires in the internal twisted wire group is relatively small, providing a certain structural strength, which is beneficial to the cabling process of the external twisted wire group; the deformation of the two pairs of twisted wires in the external twisted wire group is small, thereby improving the data transmission performance; since the pitch diameter ratio of the external twisted wire group and the internal twisted wire group is different, and the internal twisting directions are opposite, the signal loss caused by the deformation of the cable due to the resonance pressure of the ground is eliminated; the outdoor buried Ethernet data cable has high-strength mechanical pressure resistance, water and air resistance, rodent and rat resistance and other properties, and improves the service life and performance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of an outdoor buried Ethernet data cable according to the first embodiment of the utility model;

[0023] Figure 2 It is a cross-sectional schematic diagram of an outdoor buried Ethernet data cable according to the first embodiment of the utility model;

[0024] Figure 3 This is a cross-sectional schematic diagram of a twisted pair group in an outdoor buried Ethernet data cable of the first embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of an outdoor buried Ethernet data cable according to the first embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of four twisted-pair cables in an outdoor underground Ethernet data cable according to the first embodiment of the utility model (comparison before cabling).

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] Those skilled in the art will appreciate that, unless expressly stated, the singular forms "one", "said", "above", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0030] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as the meaning in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0031] Reference Figures 1 to 5 In one embodiment of the utility model, an outdoor buried Ethernet data cable comprises:

[0032] The twisted pair group 100 includes four pairs of twisted pairs 110, each of which is formed by twisting two sub-wires, each of which includes a twisted conductor and an insulating layer wrapping the conductor. Two pairs of the four pairs of twisted pairs 110 are located at the central axis of the Ethernet data cable to form an internal twisted wire group 120, and the other two pairs of the four pairs of twisted pairs 110 are wound around the outer periphery of the internal twisted wire group 120 to form an external twisted wire group 130. The pitch diameter ratio of the twisted wire 110 is 1.2 to 3 times the pitch diameter ratio of the twisted pair 110 in the internal twisted wire group 120, the twisting directions of the two pairs of twisted wires 110 in the external twisted wire group 130 are opposite, and the twisting directions of the two pairs of twisted wires 110 in the internal twisted wire group 120 are opposite, wherein the twisted pair 110 has a backtwist of 50% to 80%, and the external twisted wire group 130 is wound into a cable around the outer periphery of the internal twisted wire group 120 and has a backtwist of 70% to 90%;

[0033] An inner lining layer 200 wraps the plurality of twisted pair wire groups 100;

[0034] An armor layer 300, wrapped around the inner lining layer 200;

[0035] The outer sheath 400 is wrapped around the armor layer 300 .

[0036] In the prior art, ordinary Ethernet data cables are used in underground environments. Due to the passage of ground vehicles and pedestrians, resonance occurs. The structure of the data cables is prone to change or the conductors are broken under the pressure of resonance. At the same time, the underground environment is also a challenge to the normal use of data cables.

[0037] In the present invention, the twisted pair group 100 includes four pairs of twisted pairs 110, and the twisted pairs 110 are formed by twisting two sub-wires, and the sub-wires include a twisted conductor and an insulating layer that wraps the conductor. The sub-wires are twisted, for example, the conductors are made of high-purity oxygen-free tinned copper with American wire gauge 24AWG and 23AWG, and the tinned copper is made of 7 regular strands, which increases the softness and torsion resistance of the sub-wires, and the softness and torsion resistance of the entire outdoor buried Ethernet data cable are improved. Two pairs of the four twisted pairs 110 are located at the central axis of the Ethernet data cable to form an internal twisted wire group 120, and the other two pairs of the four twisted pairs 110 are wound into cables around the outer periphery of the internal twisted wire group 120 to form an external twisted wire group 130. The four twisted pairs 110 are twisted together to form a frame, eliminating the need to introduce a skeleton. The pitch diameter ratio of the twisted pair 110 in the external twisted wire group 130 is 1.2 to 3 times the pitch diameter ratio of the twisted pair 110 in the internal twisted wire group 120. With the above pitch diameter ratio setting, the pitch diameter of the twisted pair 110 in the internal twisted wire group 120 is relatively small, providing a certain structural strength, which is beneficial to the cabling process of the external twisted wire group 130; the deformation of the two pairs of twisted pairs 110 in the external twisted wire group 130 is small, thereby improving the data transmission performance. The twisting directions of the two pairs of twisted pairs 110 in the external twisted wire group 130 are opposite, and the twisting directions of the two pairs of twisted pairs 110 in the internal twisted wire group 120 are opposite. The above setting of opposite twisting directions improves the ability of the Ethernet data cable to cope with expansion and contraction. Specifically, since the pitch diameter ratios of the external twisted wire group 130 and the internal twisted wire group 120 are different, and the internal twisting directions are opposite, the signal loss caused by the deformation of the cable due to the ground resonance pressure is eliminated.

[0038] The twisted pair 110 has a backtwist of 50% to 80%, and the outer twisted wire group 130 is wound around the outer periphery of the inner twisted wire group 120 to have a backtwist of 70% to 90%. Through the above two backtwist settings, the hidden danger of structural damage to the twisted pair 110 is reduced. During the cabling process, a magnetic powder constant tension pay-off frame is used to ensure the tension stability during the cabling process.

[0039] The inner lining layer 200 wraps the plurality of twisted pair wires 100. The inner lining layer 200 wraps and fixes the twisted pair wires 100, and provides a certain waterproof and airproof effect. The material of the inner lining layer 200 can be various types of common sheath materials, such as high-density polyvinyl chloride.

[0040] The armor layer 300 is wrapped around the inner lining layer 200 . The armor layer 300 mainly provides tensile strength and also provides an anti-puncture effect.

[0041] The outer sheath 400 is wrapped outside the armor layer 300, and the outer sheath 400 plays a protective role in the outermost layer. The material of the outer sheath 400 can also be optimized to provide special performance optimization. For example, the outer sheath 400 can be selected as a linear low-density polyethylene material. The strong water resistance and high tensile strength of linear low-density polyethylene are used to improve the overall structural strength and waterproof performance of the outdoor buried Ethernet data cable. Anti-rat and ant substances can also be added to the formula of the outer sheath 400 to provide corresponding effects.

[0042] In summary, the four pairs of twisted wires 110 are twisted together to form a frame, eliminating the need for a skeleton; the pitch diameter of the twisted wires 110 in the internal twisted wire group 120 is relatively small, providing a certain structural strength, which is beneficial to the cabling process of the external twisted wire group 130; the deformation of the two pairs of twisted wires 110 in the external twisted wire group 130 is relatively small, thereby improving the data transmission performance; since the pitch diameter ratios of the external twisted wire group 130 and the internal twisted wire group 120 are different, and the internal twisting directions are opposite, the signal loss caused by the deformation of the cable due to the ground resonance pressure is eliminated; the outdoor buried Ethernet data cable has high-strength mechanical pressure resistance, water and gas resistance, rodent and rat resistance, etc., which improves the service life and performance of the cable.

[0043] In one embodiment, the pitch diameter ratio of one twisted pair 110 in the inner twisted wire group 120 is 1.2 to 1.5 times that of the other; and the pitch diameter ratio of one twisted pair 110 in the outer twisted wire group 130 is 1.2 to 1.5 times that of the other.

[0044] In this embodiment, taking the internal twisted wire group 120 as an example, the pitch diameter ratios of the two twisted pairs 110 therein are made different, so as to achieve a better bonding effect between the two twisted pairs 110. For performance and processing considerations, the pitch diameter ratio difference should not be too large.

[0045] In one embodiment, the pitch ratios of the two pairs of twisted wires 110 in the internal twisted wire group 120 are 3.8 and 4.8 respectively.

[0046] In this embodiment, a suitable pitch diameter ratio of the two pairs of twisted wires 110 in the internal twisted wire group 120 is given according to the processing and use process in practice.

[0047] In one embodiment, the pitch ratios of the two pairs of twisted wires 110 in the external twisted wire group 130 are 5.8 and 6.3 respectively.

[0048] In this embodiment, a suitable pitch diameter ratio of the two pairs of twisted wires 110 in the external twisted wire group 130 is given according to the processing and use process in practice.

[0049] In one embodiment, the conductor is galvanized copper.

[0050] In this embodiment, the conductor uses high-purity oxygen-free tinned copper with American wire gauge 24AWG and 23AWG. The tinned copper uses 7 regular strands to increase the softness and torsion resistance of the sub-wires, and the softness and torsion resistance of the entire outdoor buried Ethernet data cable are improved. The conductor is tinned copper, which has an anti-oxidation function in a humid environment, ensuring the purity of the copper and the stability of signal transmission.

[0051] Reference Figure 2 In one embodiment, the twisted pair group 100 is wrapped with a water blocking tape layer 500, the inner lining layer 200 wraps the water blocking tape layer 500, and the water blocking tape layer 500 is filled with dry oil paste.

[0052] In this embodiment, the dry grease fills the space in the water-blocking tape layer 500 that is not occupied by the twisted pair cable group 100. The dry grease provides relatively superior radial and longitudinal waterproof and air-proof properties, which complements the radial waterproof and air-proof properties of the water-blocking tape layer 500. Through the cooperation of the water-blocking tape layer 500 and the dry grease, the use characteristics of the outdoor buried Ethernet data cable in gas and liquid environments are guaranteed.

[0053] In one embodiment, the outer sheath 400 is made of linear low-density polyethylene.

[0054] In this embodiment, the material of the outer sheath 400 is linear low-density polyethylene, and the strong water resistance and high tensile strength of linear low-density polyethylene are used to improve the overall structural strength and waterproof performance of the outdoor buried Ethernet data cable.

[0055] In one embodiment, the armor layer 300 is braided with 0.15 to 0.20 mm soft galvanized steel wires, and the braiding density is ≥ 90%.

[0056] In this embodiment, the armor layer 300 is a 0.2 mm soft steel wire braided armor, which increases the tensile strength of the armor layer 300 and improves the overall tensile strength of the outdoor buried Ethernet data cable. The armor layer 300 also protects the twisted pair group 100 and the inner lining layer 200 from various mechanical damages. The above braided structure improves the overall structural strength while retaining the bending performance, making the construction more convenient and easy.

[0057] In one embodiment, the lining layer 200 is made of high-density polyvinyl chloride.

[0058] In this embodiment, high-density polyvinyl chloride with a density of about 1.65 grams per cubic millimeter is used as the inner lining layer, which can withstand a pressure of 500 Newtons without breaking at minus 40 degrees Celsius to minus 90 degrees Celsius, thereby enhancing the overall pressure resistance of the outdoor buried Ethernet data cable.

[0059] In one embodiment, the twisted pair 110 has a 60% backtwist, and the outer twisted wire group 130 is cabled around the outer periphery of the inner twisted wire group 120 and has a 80% backtwist.

[0060] In this embodiment, based on the processing and use process in practice, preferred detwisting parameters of the twisted pair 110 and preferred detwisting parameters of the outer twisted wire group 130 wound into a cable around the outer periphery of the inner twisted wire group 120 are given.

[0061] In summary, in the outdoor buried Ethernet data cable provided by the utility model, four pairs of twisted pair wires 110 are twisted together to form a frame, eliminating the need for a skeleton; the pitch diameter of the twisted pair wires 110 in the internal twisted wire group 120 is relatively small, providing a certain structural strength, which is beneficial to the cabling process of the external twisted wire group 130; the deformation of the two pairs of twisted pair wires 110 in the external twisted wire group 130 is small, thereby improving the data transmission performance; since the pitch diameter ratio of the external twisted wire group 130 and the internal twisted wire group 120 is different, and the internal twisting directions are opposite, the signal loss caused by the deformation of the cable due to the ground resonance pressure is eliminated; the outdoor buried Ethernet data cable has high-strength mechanical pressure resistance, water and gas resistance, rodent and rat resistance and other properties, thereby improving the service life and performance of the cable.

[0062] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An outdoor buried Ethernet data cable, characterized in that: include: A twisted pair wire group (100) comprises four pairs of twisted pair wires (110), wherein the twisted pair wires (110) are formed by twisting two sub-wires, wherein the sub-wires comprise a twisted conductor and an insulating layer wrapping the conductor, wherein two pairs of the four pairs of twisted pair wires (110) are located at the central axis of the Ethernet data cable to form an internal twisted wire group (120), and the other two pairs of the four pairs of twisted pair wires (110) are wound around the outer periphery of the internal twisted wire group (120) to form an external twisted wire group (130), wherein the twisted pair wires in the external twisted wire group (130) The pitch diameter ratio of the wire (110) is 1.2 to 3 times the pitch diameter ratio of the twisted pair (110) in the internal twisted wire group (120), the twisting directions of the two pairs of twisted wires (110) in the external twisted wire group (130) are opposite, and the twisting directions of the two pairs of twisted wires (110) in the internal twisted wire group (120) are opposite, wherein the twisted pair (110) has a backtwist of 50% to 80%, and the external twisted wire group (130) is wound into a cable around the outer periphery of the internal twisted wire group (120) and has a backtwist of 70% to 90%; An inner lining layer (200) wrapping the plurality of twisted pair wire groups (100); An armor layer (300) wrapped around the inner lining layer (200); The outer sheath (400) is wrapped around the armor layer (300).

2. The outdoor buried Ethernet data cable according to claim 1, characterized in that: The pitch diameter ratio of one twisted pair (110) in the inner twisted wire group (120) is 1.2 to 1.5 times that of the other; the pitch diameter ratio of one twisted pair (110) in the outer twisted wire group (130) is 1.2 to 1.5 times that of the other.

3. The outdoor buried Ethernet data cable according to claim 2, characterized in that: The pitch diameter ratios of the two pairs of twisted wires (110) in the internal twisted wire group (120) are 3.8 and 4.8 respectively.

4. The outdoor buried Ethernet data cable according to claim 3, characterized in that: The pitch diameter ratios of the two pairs of twisted wires (110) in the external twisted wire group (130) are 5.8 and 6.3 respectively.

5. The outdoor buried Ethernet data cable according to any one of claims 1 to 4, characterized in that: The conductor is galvanized copper.

6. The outdoor buried Ethernet data cable according to any one of claims 1 to 4, characterized in that: The twisted pair wire group (100) is wrapped with a water-blocking tape layer (500), the inner lining layer (200) wraps the water-blocking tape layer (500), and the water-blocking tape layer (500) is filled with dry oil paste.

7. The outdoor buried Ethernet data cable according to any one of claims 1 to 4, characterized in that: The outer sheath (400) is made of linear low-density polyethylene.

8. The outdoor buried Ethernet data cable according to any one of claims 1 to 4, characterized in that: The armor layer (300) is braided with soft galvanized steel wires of 0.15 to 0.20 mm in diameter, and the braiding density is ≥90%.

9. The outdoor buried Ethernet data cable according to any one of claims 1 to 4, characterized in that: The material of the inner lining layer (200) is high-density polyvinyl chloride.

10. The outdoor buried Ethernet data cable according to any one of claims 1 to 4, characterized in that: The twisted pair (110) has a backtwist of 60%, and the outer twisted wire group (130) is wound into a cable around the outer periphery of the inner twisted wire group (120) and has a backtwist of 80%.

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