Composite high-impedance communication unit wiring round cable

Abstract

The utility model relates to the technical field of elevator cables, and discloses a composite high-impedance communication unit wiring round cable, which comprises an outer sheath, a plurality of communication twisted-pair units, a control wire core and a power wire core, and the plurality of communication twisted-pair units, the power wire cores and the control wire cores are twisted together and are coated with a non-woven fabric belting layer. According to the utility model, the inner-layer composite communication twisted-pair unit and the stranded conductor of the communication twisted-pair unit employ a fine and soft copper wire bunch stranding structure and are suitable for bending use, each communication twisted-pair unit controls different pitches and can reduce mutual interference, and the plurality of communication twisted-pair units, the power wire cores and the control wire cores are twisted for the second time to form a composite cable core. The symmetrical distribution structure improves the overall bending resistance, the ground wire circulation interference of the shielding layer of the communication unit is effectively reduced, the composite cable core reduces the occupied space of the cable in the hoistway, and the construction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of elevator cable technology, specifically a composite high-impedance communication unit wiring round cable. Background Technology

[0002] Elevator cables are devices installed below the elevator car. They are responsible for transmitting the power, signals, and data required by the elevator during operation. Elevator traveling cables consist of multiple bundles of wires, including power supply lines, signal lines, and data lines. The bundles are bound together using a special braiding method to ensure the overall performance of the cable.

[0003] In the elevator operating environment, a large number of shaft round cables are required to connect with the accompanying cables. After docking, the cable length can extend to the control cabinet in the top floor machine room. Multiple shaft round cables occupy a large space in the shaft, increasing the complexity of construction. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a composite high-impedance communication unit wiring round cable, which solves the problems mentioned in the background and effectively avoids interference between different functional cores after cable composite. It also cuts off or weakens the propagation path of electromagnetic fields to reduce electromagnetic wave leakage and reception.

[0005] This utility model provides the following technical solution: a composite high-impedance communication unit wiring round cable, comprising: an outer sheath, multiple communication twisted-pair units, a control core, and a power core. The multiple communication twisted-pair units are all located inside the outer sheath. The multiple communication twisted-pair units, the power core, and the control core are twisted together and covered with a non-woven fabric wrapping layer. A copper wire shielding layer is provided on the outer wall of the non-woven fabric wrapping layer, and the surface of the copper wire shielding layer is connected to the inner wall of the outer sheath.

[0006] The communication twisted pair unit includes an insulating layer and two twisted conductors connected inside the insulating layer, and an aluminum foil shielding layer is provided on the surface of the insulating layer.

[0007] Preferably, the ratio of the stranding pitch of the two stranded conductors to the stranding diameter of the two stranded conductors is less than 12.

[0008] Preferably, the ratio of the twist pitch of the multiple communication twisted pairs to the twist diameter of the multiple communication twisted pairs is less than 22.

[0009] Preferably, the multiple communication twisted-pair units are twisted together with the control wire core and the power wire core to form a composite cable core.

[0010] Preferably, the communication twisted pair unit adopts a symmetrical cross-shaped structure and is arranged in a mutually perpendicular distribution.

[0011] Preferably, the outer sheath is made of a highly flame-retardant and oil-resistant material.

[0012] Preferably, the insulation layer of the communication twisted pair unit is made of polyethylene or halogen-free polyolefin insulation material.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This composite high-impedance communication unit uses a round cable with an inner composite communication twisted pair unit. The twisted conductors of the communication twisted pair unit adopt a fine and soft copper wire bundle structure, which is suitable for bending. Each communication twisted pair unit controls a different pitch, which can reduce mutual interference. Multiple communication twisted pair units are twisted a second time with power cores and control cores to form a composite cable core. The symmetrical distribution structure improves the overall bending resistance and effectively reduces the ground wire circulating current interference of the communication unit shielding layer. The composite cable core reduces the space occupied by the cable in the shaft and improves construction efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the cross-sectional structure of this utility model.

[0016] In the diagram: 1. Outer sheath; 2. Communication twisted pair unit; 21. Insulation layer; 22. Twisted conductor; 23. Aluminum foil shielding layer; 3. Non-woven fabric wrapping layer; 4. Copper wire shielding layer; 5. Power core; 6. Control core. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 A composite high-impedance communication unit wiring round cable includes an outer sheath 1, multiple communication twisted pair units 2, control wire cores 6, and power wire cores 5. The multiple communication twisted pair units 2 are all located inside the outer sheath 1. The multiple communication twisted pair units 2, control wire cores 6, and power wire cores 5 are twisted together and covered with a non-woven fabric wrapping layer 3. A copper wire shielding layer 4 is provided on the outer wall of the non-woven fabric wrapping layer 3. The surface of the copper wire shielding layer 4 is connected to the inner wall of the outer sheath 1.

[0019] The communication twisted pair unit 2 includes an insulating layer 21 and two twisted conductors 22. The two twisted conductors 22 are connected inside the insulating layer 21, and an aluminum foil shielding layer 23 is provided on the surface of the insulating layer 21.

[0020] Among them, the ratio of the twist pitch of the two stranded conductors 22 to the twist diameter of the two stranded conductors 22 is less than 12.

[0021] Among them, the twist pitch of the multiple communication twisted pair unit 2 and the twist diameter of the multiple communication twisted pair unit 2 are less than 22.

[0022] Multiple communication twisted-pair units 2 are twisted together with control core 6 and power core 5 to form a composite cable core. The communication twisted-pair units 2 are arranged in a symmetrical cross-shaped structure in the composite cable core, forming a mutually perpendicular arrangement.

[0023] The outer sheath 1 is made of highly flame-retardant and oil-resistant material.

[0024] Among them, the insulation layer 21 is made of polyethylene or halogen-free polyolefin insulation material.

[0025] The communication twisted pair unit 2 adopts a symmetrical cross-shaped structure, with mutually perpendicular arrangement.

[0026] The insulation layer 21 of the communication twisted pair unit 2 is made of polyethylene or halogen-free polyolefin insulation material. The insulation layer 21 has withstood a 1000V AC spark test without breakdown and has a characteristic impedance of 100Ω, which can effectively reduce communication attenuation. The twist pitch of the two twisted conductors 22 is less than 12 times the twist diameter of the two twisted conductors 22. The communication twisted pair unit 2 improves anti-interference capability through aluminum foil shielding layer 23. The twisted conductors 22 are made of multiple soft copper conductor bundles twisted together, which is suitable for bending. The multiple communication twisted pair units 2, control core 6 and power core 5 are twisted together a second time using cabling equipment to form a composite cable core. The twist pitch of the multiple communication twisted pair units 2 is less than 22 times the twist diameter of the multiple communication twisted pair units 2 to improve overall flexibility, which can significantly reduce the space occupied by the shaft cable and effectively reduce the ground current interference of the communication unit shielding layer.

[0027] Adding a non-woven fabric wrapping layer 3 improves the overall roundness, and adding a copper wire shielding layer 4 effectively isolates high-frequency interference signals from the outside. The outer sheath 1 is made of high flame-retardant and oil-resistant material, which has bending resistance and crack resistance, and can adapt to various harsh environments. The characteristic impedance of the two twisted conductors 22 of the communication twisted pair unit 2 is controlled at 100±20 ohms, and the attenuation value is ≤5.0db / 100m.

[0028] It offers versatile communication options, improves overall cable performance, and combines different functional communication units to enhance ease of use and facilitate future additions for various communication requirements. Integrating these units into a single cable also simplifies installation and reduces labor costs; multifunctional applications are the future trend.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite high-impedance communication unit wiring round cable, characterized in that, include: The outer sheath (1), multiple communication twisted pair units (2), control wire core (6) and power wire core (5) are located inside the outer sheath (1). The multiple communication twisted pair units (2), control wire core (6) and power wire core (5) are twisted together and covered with a non-woven fabric wrapping layer (3). The outer wall of the non-woven fabric wrapping layer (3) is provided with a copper wire shielding layer (4). The surface of the copper wire shielding layer (4) is connected to the inner wall of the outer sheath (1). The communication twisted pair unit (2) includes an insulating layer (21) and two twisted conductors (22), which are connected inside the insulating layer (21). An aluminum foil shielding layer (23) is provided on the surface of the insulating layer (21).

2. The composite high-impedance communication unit wiring round cable according to claim 1, characterized in that, The ratio of the twist pitch of the two stranded conductors (22) to the twist diameter of the two stranded conductors (22) is less than 12.

3. The composite high-impedance communication unit wiring round cable according to claim 1, characterized in that, The twist pitch of the multiple communication twisted pair units (2) is less than 22 times the twist diameter of the multiple communication twisted pair units (2).

4. The composite high-impedance communication unit wiring round cable according to claim 1, characterized in that, The multiple communication twisted-pair units (2) are twisted together with the control core (6) and the power core (5) to form a composite cable core.

5. The composite high-impedance communication unit wiring round cable according to claim 4, characterized in that, The communication twisted pair unit (2) is arranged in a symmetrical cross-shaped structure in the composite cable core, forming a mutually perpendicular arrangement.

6. The composite high-impedance communication unit wiring round cable according to claim 1, characterized in that, The outer sheath (1) is made of a highly flame-retardant and oil-resistant material.

7. The composite high-impedance communication unit wiring round cable according to claim 1, characterized in that, The insulation layer (21) of the communication twisted pair unit is made of polyethylene or halogen-free polyolefin insulation material.

Images