Wiring structure based on EWIS electrical circuit interconnection system

Abstract

The utility model belongs to the technical field of electrical cable wiring structures, and particularly relates to a wiring structure based on an EWIS electrical circuit interconnection system. Comprising wire harness channels which are arranged on the left side and the right side of the back face of equipment. Wherein each wire harness channel comprises a signal channel and a power supply channel; the isolation distance between the signal channel and the power supply channel is 400mm; an analog signal wire harness, a low-frequency signal wire harness, a video signal wire harness and a data transmission low-frequency control signal wire harness are laid in the signal channel. And a power supply signal wire harness is laid in the power supply channel. According to the utility model, the problems of mutual interference of different signals, external interference influence and maintenance and troubleshooting are solved, and the advantages of functional isolation, physical isolation, good external interference resistance and easy integration are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electrical cable wiring structure, especially relates to a wiring structure based on EWIS electrical line interconnection system. BACKGROUND

[0002] In the process of modern equipment development, the requirement of internal wiring structure design is also improving, which lays the foundation for the generation of system wiring structure, and the research of our country is also in constant depth. At the beginning, it only stays in modularization and aestheticization, but with the gradual development of modern equipment to miniaturization, the research of system wiring structure of our country also develops rapidly.

[0003] The traditional wiring structure mainly has the following shortcomings: 1) not easy to maintain and replace; 2) not easy to position and troubleshoot; 3) different signals interfere with each other. INVENTION CONTENT

[0004] The utility model discloses a wiring structure based on EWIS electrical line interconnection system, compared with the traditional structure, reaches the function isolation and the physical isolation, the good anti-external interference ability and the integrated advantage.

[0005] In order to solve the above technical problems, the utility model provides a wiring structure based on EWIS electrical line interconnection system, including the wire harness channel, the wire harness channel is arranged on the back left and right sides of equipment;

[0006] Wherein each wire harness channel includes signal channel and power channel, the isolation distance between signal channel and power channel is 400mm, the signal channel is paved with analog signal, low frequency signal, video signal and data transmission low frequency control signal wire harness, and the power channel is paved with power signal wire harness.

[0007] Preferably, each wire harness further includes connector, tail accessory, terminal and branch point, a plurality of branch points are arranged on the wire harness to form a plurality of branch lines, and the ends of the plurality of branch lines are respectively connected with the connector, the tail accessory and the terminal.

[0008] Preferably, the wire harness is supported and fixedly installed through a clamp and / or a wiring rod.

[0009] Preferably, the outside of the wire harness further includes a high salt-resistant wave-proof sleeve and a military green anti-hanging silk mold-resistant nylon silk sleeve that are sequentially sleeved, and is tied by green silk rope, and the tying place further includes coated glue to realize anti-loosening.

[0010] Preferably, the high salt-resistant wave-proof sleeve is grounded to the grounding pile.

[0011] Preferably, the clamp is installed at 90°±5° to the laying direction of the wire harness.

[0012] Preferably, each of the wire harnesses also includes identification information about the cable name, specifications, and length.

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] Compared with traditional structures, this invention solves the problems of mutual interference between different signals, external interference, and maintenance and troubleshooting, achieving the advantages of functional and physical isolation, good anti-external interference capability, and easy integration. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the left-side wiring channel of this utility model.

[0016] Fig. 2 This is a schematic diagram of the wiring channel on the right side of this utility model.

[0017] Fig. 3 This is a schematic diagram of the three-dimensional wiring structure of the wire harness of this utility model.

[0018] Fig. 4 This is a schematic diagram of the three-dimensional wiring flattening structure of the wire harness of this utility model.

[0019] In the diagram: 1-Wire harness channel, 2-Signal channel, 3-Power channel, 4-Connector, 5-Tail accessory, 6-Terminal block, 7-Bifurcation point, 8-Clamp, 9-Wire rod. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0021] like Figs. 1-4 As shown, this utility model provides a wiring structure based on the EWIS electrical circuit interconnection system, including a wire harness channel 1, which is arranged on the left and right sides of the back of the device.

[0022] Each of the wire harness channels 1 includes a signal channel 2 and a power channel 3; the isolation distance between the signal channel 2 and the power channel 3 is 400mm; the signal channel 2 is equipped with analog signal, low frequency signal, video signal and data transmission low frequency control signal wire harnesses; the power channel 3 is equipped with power signal wire harnesses.

[0023] Each of the wire harnesses further includes a connector 4, a tail accessory 5, a terminal block 6, and a branch point 7; the wire harness is provided with multiple branch points 7 to form multiple branch lines, such that the ends of the multiple branch lines are respectively connected to the connector 4 (including P1-X10, P1-X11), the tail accessory 5 (including P1-L130, P1-L131, P1-L132) and the terminal block 6 (including P1-J421, P1-J422, P1-J423, P1-J424, P1-J425 and P1-J426).

[0024] The wiring harness is supported and fixed by clamps 8 and / or wiring poles 9.

[0025] The wire harness also includes a high salt-resistant anti-wave sleeve and a military green anti-snagging and anti-mildew nylon filament sleeve, which are sequentially fitted together and bound with green nylon rope. The binding points are also coated with glue to prevent loosening.

[0026] The high salt-resistant wave-damping sleeve is grounded and connected to the grounding pile.

[0027] The clamp 8 is installed at 90°±5° to the laying direction of the wire harness.

[0028] Each of the wire harnesses also includes information on the name, specifications, and length of the cable.

[0029] It also includes the following design principles:

[0030] EWIS Electrical Circuit Interconnection System Design Principles:

[0031] Functional isolation: The cable assembly mainly involves power signals, analog signals, low-frequency signals, video signals, and low-frequency control signals for data transmission. Analog signals, low-frequency signals, video signals, and low-frequency control signals for data transmission are highly electromagnetically sensitive, so twisted shielded cables are selected. Additionally, DC power supply uses positive and negative twisted-pair cables, and the low-frequency signal channel is effectively grounded by being encased in a wave shield to prevent external electromagnetic interference to the cable.

[0032] Physical isolation: Based on the electromagnetic emission and sensitivity requirements, signals are mainly divided into three categories. Power cables are electromagnetic emission cables, while the rest are electromagnetic sensitive cables and neutral cables. Therefore, two channels are set up: white is the power channel and yellow is the low-frequency sensitive signal channel. The isolation distance between them is 400mm, which can minimize interference.

[0033] Selection of cable protection materials;

[0034] Considering areas where wire harnesses may collide with structures or pipes, and the need for electromagnetic compatibility protection, the cable is protected by an anti-wave sleeve and a nylon sheath.

[0035] Selection of cable marking materials;

[0036] Cable assemblies (EWIS - Electrical Wiring Interconnection System) components should be labeled, and the labeling should be selected according to the type of wire and cable and the requirements of the operating environment. EWIS labeling methods include harness marking, connector code marking, and clamp positioning point marking.

[0037] Selection of wires and cables;

[0038] Selection principles for wires and cables: AF series conductors should be pre-selected for cable assemblies. AF series conductors possess advantages such as resistance to high and low temperatures, oil resistance, abrasion resistance, resistance to acids, alkalis, and various chemical reagents, anti-aging properties, and non-flammability. They also have a small outer diameter and are lightweight. They are widely used in the internal wiring of electrical equipment, instruments, and other electrical devices in various fields, conforming to GJB773A-2000 and HB6150-88 standards.

[0039] Considering electromagnetic compatibility, the cable assembly mainly involves power signals, analog signals, low-frequency signals, video signals, and low-frequency control signals for data transmission. Considering that analog signals are highly electromagnetically sensitive, twisted shielded wire is selected; positive and negative twisted pairs are used for DC power supply to cancel out electromagnetic interference, and three-phase AC power supply uses three-twisted shielded wire.

[0040] The main fixed supports for EWIS cable harness installation include: self-made cable poles and C-type clamps. According to the cable harness installation procedure, the cable support must be installed first.

[0041] Grounding installation design includes the shortest laying path for the grounding wire, the selection of the grounding stake, the selection of gaskets, spring washers, and nuts, and the installation location of the grounding stake. After the grounding installation design is completed, the location of the grounding opening needs to be coordinated with the design.

[0042] Manufacturing of wire harnesses;

[0043] 1. Prevent loosening;

[0044] For connector tail accessories with fuse holes, fuses are required for mechanical anti-loosening. For connector tail accessories without fuse holes, DG-3S adhesive should be applied to the threaded connections of the connector and accessories, the pressure plate screws, and the set screws to prevent loosening. For connectors that require final assembly, adhesive should not be applied for anti-loosening at this time, but should be applied after final assembly. The adhesive application should not affect the conductivity between the shield and the shell. All threaded connections should be tight and free from looseness.

[0045] 2. Termination requirements;

[0046] Soldered connectors: The connector contacts are soldered to the wires, and the solder joints are protected by heat-shrink tubing.

[0047] The connector is a crimp type: the connector contacts are crimped to the wires. Contacts are installed in unconnected holes and sealed with plugs. No contacts are installed in holes #8 and larger, and sealed with plugs. No contacts are installed in unconnected holes of the module, and sealed with plugs. Contacts are stored with the product packaging. For holes with high-frequency and fiber optic contacts, only sealing plugs are needed.

[0048] Terminal: The terminal is crimped to the wire.

[0049] Shielding requirements;

[0050] Except for the shielding layer entry holes, the cable shielding and anti-surge sleeve are conductive to the connector housing or terminals. The cable assembly at the shielded locations needs to be wrapped with an appropriate amount of insulating self-adhesive tape for protection to prevent the shielding wires from puncturing the conductors.

[0051] The shielding at the cable drop end will not be processed until the cable assembly is assembled and sealed internally.

[0052] Outer sheath of the wire harness;

[0053] The cable assembly is covered with a high salt-resistant anti-wave sleeve and a military green anti-snagging and anti-mildew nylon sleeve in sequence, and then tied with green nylon rope, with glue applied to the binding points to prevent loosening.

[0054] The anti-wave sleeve and nylon sheath at the cable drop end do not require bundling. Use insulating self-adhesive tape for bundling and protection to prevent the metal wires of the anti-wave sleeve from puncturing the conductor and to prevent the edges of the nylon sheath from fraying. Bundling should be done when the cable assembly is fully assembled.

[0055] Cable clamps or supports should be used near the cable termination to secure the cable and wires, ensuring that the amplitude transmitted from the main cable harness to the termination is minimized.

[0056] Installation of clamps;

[0057] The following requirements must be followed when installing clamps:

[0058] The clamps should be tightly attached to the wire harness or cable, and the clamps should be installed at an angle of 90° ± 5° to the cable laying direction.

[0059] Sufficient slack must be allowed during the installation of the cable bundle;

[0060] At the connector mating point, a certain amount of slack should be left between the wire harness and the connector, allowing for a relatively large degree of relaxation. During maintenance and disassembly / reassembly, it is necessary to allow for wire harness elongation and to provide localized abrasion protection for the wire harness.

[0061] Bending radius;

[0062] The bending radius of wires, cables, and wire harnesses should be as large as possible. If the minimum inner bending radius requirement cannot be met, the bending radius should be increased to meet the applicable bending radius requirement. Wrinkles or bends in the insulation layer are permissible as long as the insulation layer is not damaged.

[0063] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A wiring structure based on an EWIS electrical wiring interconnection system, characterized by, The wire harness channel is arranged on the left and right sides of the back of the device. Each wire harness channel comprises a signal channel and a power channel, the isolation distance between the signal channel and the power channel is 400 mm, the signal channel is laid with analog signal, low frequency signal, video signal and data transmission low frequency control signal wire harness, and the power channel is laid with power signal wire harness.

2. A wiring structure based on the EWIS electrical wiring interconnection system according to claim 1, characterized in that, Each wire harness further comprises a connector, a tail accessory, a wiring terminal and a branching point, a plurality of branching points are arranged on the wire harness to form a plurality of branch wires, and the ends of the plurality of branch wires are respectively connected with the connector, the tail accessory and the wiring terminal.

3. The wiring structure based on the EWIS electrical wiring interconnection system of claim 1, wherein, The wire harness is supported and fixed by a clamp and / or a wiring rod.

4. The wiring structure based on the EWIS electrical wiring interconnection system of claim 1, wherein, The outer part of the wire harness further comprises a high salt-resistant anti-wave sleeve and a military green anti-hanging silk and mildew-resistant chinlon silk sleeve which are sequentially sleeved, and is tied by a green chinlon silk rope, and the tied part further comprises a coated glue to prevent loosening.

5. A wiring structure based on the EWIS electrical wiring interconnection system according to claim 4, characterized in that, The high salt-resistant anti-wave sleeve is grounded with a grounding pile.

6. The wiring structure based on the EWIS electrical wiring interconnection system of claim 3, wherein, The clamp is installed at 90°±5° with the laying direction of the wire harness.

7. The wiring structure based on the EWIS electrical wiring interconnection system of claim 1, wherein, Each wire harness further comprises the name, specification and length information of the cable.

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