CN215451019U - Serial port communication cable - Google Patents

Abstract

The utility model relates to a serial ports communication cable, including four group's serial ports group, every group serial ports group comprises two serial connections and the string mouthful line of tangent setting, four group's serial ports group divide into two lines, string mouthful line group interval, parallel arrangement and be symmetry, bilateral symmetry from top to bottom, the space intussuseption between the serial ports group is filled with the filler, separate by cross form central bracing frame between four group's serial ports group, the center department of four group's serial ports group is provided with the drainage wire, and the outside cladding of four group's serial ports group has around covering, shielding layer, inner sheath, armor structural layer and oversheath in proper order, the armor structural layer comprises steel pipe and the multilayer flat steel band of spiral winding on the steel pipe, and crisscross winding is controlled to adjacent two-layer flat steel band. The serial port communication cable data transmission stability and integrality of this application are good, intensity is high.

Description

Serial port communication cable

Technical Field

The application belongs to the technical field of cables, and particularly relates to a serial port communication cable.

Background

When information interaction is performed between electronic devices, various communication transmission modes may be used, such as internet port communication, serial port communication, CAN port communication, and the like, and these communication signal transmission mechanisms are different, and the following protocols are different, and transmission rates are different. Therefore, each communication signal generally adopts a respective communication cable for signal transmission, for example, a network cable is adopted for a network port signal, a serial port is adopted for a serial port signal, and the like. However, in some cases, the number of cables used is very severe, and the number of cables is limited to a high degree, which requires that a multi-core cable is directly fused to one cable for signal transmission. However, the existence of multiple serial port lines in the existing transmission cable for transmitting serial port communication signals easily causes electromagnetic interference between different serial port signals, thereby resulting in an increase in communication error rate, and poor data transmission stability and integrity, which makes it impossible to apply the transmission cable to occasions (such as military industry, ships, medical treatment, chemical industry, etc.) with extremely high requirements on communication stability.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the serial communication cable is provided for solving the defects of poor data transmission stability and integrity and poor strength of the existing serial communication cable.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides a serial ports communication cable, includes four groups of serial ports group, every group serial ports group comprises two serial connections and the string mouthful line of tangent setting, four groups of serial ports group divide into two lines, string mouthful line group interval, parallel arrangement and be symmetry, bilateral symmetry from top to bottom, the space intussuseption between the serial ports group is filled with the filler, separate by cross form central bracing frame between four groups of serial ports group, the center department of four groups of serial ports group is provided with the drainage line, and the outside cladding of four groups of serial ports group has around covering, shielding layer, inner sheath, armor structure layer and oversheath in proper order, the armor structure layer comprises steel pipe and the multilayer flat steel band of spiral winding on the steel pipe, and crisscross winding is controlled to adjacent two-layer flat steel band.

Preferably, the cross-shaped central support frame is made of PEP material.

Preferably, the number of layers of the multi-layer flat steel strip is even.

Preferably, the serial port line comprises a conductor and an insulating layer wrapped outside the conductor.

Preferably, the conductor is formed by twisting a single oxygen-free copper single wire or a plurality of oxygen-free copper single wires.

Preferably, a nylon outer layer is arranged between the armor structure layer and the outer sheath.

Preferably, the wrapping layer is formed by wrapping a polyester tape.

Preferably, the inner sheath and the outer sheath are both made of low-smoke halogen-free polyolefin materials.

Preferably, the shielding layer is a double-sided aluminum foil layer coated outside the lapping layer.

Preferably, the cross section of the serial communication cable is square.

The utility model has the beneficial effects that:

two serial port lines in each serial port line group in the serial port communication cable are connected in series, four serial port line groups are divided into two lines, the serial port line groups are arranged at intervals in parallel and are vertically symmetrical and bilaterally symmetrical, and the serial port line groups are combined in a serial-parallel mode and an arrangement mode of the serial port line groups, so that mutual interference of signals can be effectively prevented, the stability and the integrity of serial port communication signal transmission are greatly improved, the signal transmission efficiency and the accuracy are improved, the added drainage line effectively avoids the interference of the external world to signal current, the stability of high-frequency signal transmission performance is further enhanced, a cross-shaped central support frame is arranged among the four serial port line groups, the relative positions of the four serial port line groups are enhanced, the crosstalk among the serial port line groups is favorably reduced, the signal delay difference of the communication cable is further reduced, the stable transmission performance of the cable is ensured, and the balance of the cable can be improved at the same time, the balance structure is not easily damaged during the cable installation process; in addition, this application has set up the armor layer outside the inner sheath, the armor layer comprises steel pipe and the flat steel band of multilayer of spiral winding on the steel pipe, crisscross winding about adjacent two-layer flat steel band, the steel pipe all receives the precompression effect of steel band in circumference and axial, the steel band can bear the circumference power and can bear the axial force simultaneously, make the steel pipe surface need not through cutting process play slot, the flat steel band also need not to set up the embossing, greatly increased cable intensity, further set up the nylon tegument between armor layer and oversheath, can improve the compressive property of cable, effectively defend rat and ant damage inside the cable, inner sheath and oversheath all adopt low smoke and zero halogen polyolefin material, it is good fire-retardant and anti-electromagnetic interference performance, make this cable can use in adverse circumstances.

Drawings

The technical solution of the present application is further explained below with reference to the drawings and the embodiments.

FIG. 1 is a cross-sectional view of a serial communication cable according to an embodiment of the present application;

the reference numbers in the figures are: the cable comprises 1-a serial port wire, 11-a conductor, 12-an insulating layer, 2-a drainage wire, 3-a filler, 4-a lapping layer, 5-a shielding layer, 6-an inner sheath, 7-an armor structure layer, 8-a nylon outer coating layer, 9-an outer sheath and 10-a central support frame.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the utility model, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Examples

The embodiment provides a serial port communication cable, as shown in fig. 1, which includes four serial port line groups, each serial port line group is composed of two serial port lines 1 connected in series and arranged tangentially, the four serial port line groups are divided into two rows, the serial port line groups are arranged in parallel at intervals and are symmetrical up and down and left and right, the serial port lines 1 include conductors 11 and insulating layers 12 wrapped outside the conductors 11, the conductors 11 are formed by twisting single oxygen-free copper single lines or multiple oxygen-free copper single lines, the two serial port lines 1 in each serial port line group are connected in series, the serial port line groups are parallel to each other, and a serial-parallel combination mode and a serial port line group arrangement mode are adopted, so that the stability and the integrity of data transmission are greatly improved; the filler 3 is filled in gaps among the serial port line groups, and the four groups of serial port lines are separated by the cross-shaped central support frame 10, so that the relative positions of the four groups of serial port lines are enhanced, the crosstalk among the serial port line groups is reduced, the signal delay difference of the communication cable is further reduced, the stable transmission performance of the cable is ensured, the balance of the cable can be improved, and the balance structure is not easily damaged in the cable installation process; the drainage wire 2 is arranged at the center of the four groups of serial port lines, so that the interference of the outside on signal current is effectively avoided, and the stability of the transmission performance of high-frequency signals is further enhanced; in addition, the wrapping layer 4, the shielding layer 5, the inner sheath 6, the armor structure layer 7 and the outer sheath 9 are sequentially coated on the outer sides of the four serial port line groups, and the nylon exterior layer 8 is arranged between the armor structure layer 7 and the outer sheath 9, so that the pressure resistance of the cable is improved, and the damage of rats and ants to the inside of the cable is effectively prevented; the wrapping layer 4 is formed by wrapping a polyester tape, the inner sheath 6 and the outer sheath 9 are both made of low-smoke halogen-free polyolefin materials, and the flame-retardant and anti-electromagnetic interference performance is good.

Through tests, the anti-interference capability of the product prepared by the embodiment is far better than that of a common product, the near-end crosstalk can reach more than 60dB/100m under the frequency of 200MHz and can reach more than 55dB/100m under the frequency of 550MHz, and the requirements of 90-110 European standard tests are met; under the frequency of 100MHz, the delay difference can be controlled to be 3ns/100m, and the transmission performance of the product can be ensured to pass the test of the super-six types of standards so as to meet the commercial requirement of 5G ten-gigabit bandwidth transmission.

In this embodiment, the armor layer 7 is composed of a steel pipe and a plurality of layers of flat steel belts spirally wound on the steel pipe, the two adjacent layers of flat steel belts are wound in a left-right staggered manner, the steel pipe is subjected to the pre-compression effect of the steel belts in the circumferential direction and the axial direction, meanwhile, the steel belts can bear the circumferential force and the axial force, grooves do not need to be machined on the outer surface of the steel pipe, embossing is not needed to be arranged on the flat steel belts, the strength of the cable is greatly increased, the number of the flat steel belts is preferably an even number, the torsional shearing effect of the steel pipe can be offset, and compared with a profiled groove steel belt winding type cylinder, the stress condition of the steel pipe is improved. The armor structure layer is characterized in that forged end flanges or end sockets are welded at two ends of a steel pipe, flat steel belts with the thickness of 4-8 mm and the width of 40-120 mm are wound outside the steel pipe at an inclination angle with the circumferential direction of the steel pipe under certain prestress after heat treatment and nondestructive detection, a certain angle is staggered after one layer is wound, another layer is continuously wound on the steel belts by the same method until the required size is reached, and the head end and the tail end of each steel belt are firmly welded with the flanges or the end sockets at the end parts of the steel pipe.

In this embodiment, serial communication cable's cross section is square shape, and the cable installation is easier, if armor layer flat steel band fixes on the steel pipe more firmly more easily, and the cable itself is fixed and is discerned more easily in addition.

In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the utility model. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. A serial communication cable is characterized by comprising four groups of serial lines, each group of serial lines consists of two serial lines (1) which are connected in series and are arranged tangentially, the four groups of serial port lines are divided into two lines, the serial port lines are arranged at intervals in parallel and are symmetrical up and down and left and right, the gaps among the serial port groups are filled with fillers (3), the four groups of serial port groups are separated by a cross-shaped central support frame (10), the centers of the four groups of serial port groups are provided with drain wires (2), the outer sides of the four groups of serial port groups are sequentially coated with a wrapping layer (4), a shielding layer (5), an inner sheath (6), an armor structure layer (7) and an outer sheath (9), the armor structure layer (7) is composed of a steel pipe and a plurality of layers of flat steel belts spirally wound on the steel pipe, and two adjacent layers of flat steel belts are wound in a left-right staggered mode.

2. The serial communication cable according to claim 1, wherein the cross-shaped central support frame (10) is made of PEP material.

3. The serial communication cable according to claim 1 or 2, wherein the number of layers of the multi-layer flat steel strip is even.

4. The serial communication cable according to claim 1 or 2, wherein the serial line (1) comprises a conductor (11) and an insulating layer (12) wrapped outside the conductor (11).

5. The serial port communication cable according to claim 4, wherein the conductor (11) is formed by single oxygen-free copper single wire or by twisting a plurality of oxygen-free copper single wires.

6. The serial communication cable according to claim 1 or 2, characterized in that a nylon jacket (8) is provided between the armor layer (7) and the outer jacket (9).

7. The serial port communication cable according to claim 1 or 2, wherein the wrapping layer (4) is formed by wrapping polyester tapes.

8. The serial communication cable according to claim 1 or 2, wherein the inner sheath (6) and the outer sheath (9) are both made of low smoke zero halogen polyolefin material.

9. The serial communication cable according to claim 1 or 2, wherein the shielding layer (5) is a double-sided aluminum foil layer coated outside the wrapping layer (4).

10. The serial communication cable according to claim 1 or 2, wherein the cross section of the serial communication cable is square.

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