A telescopic fishbone signal transmitting wire suitable for an antenna device

Abstract

The application provides a telescopic fishbone signal transmitting line suitable for an antenna device, which comprises a center support body with tensile resistance, a dielectric layer wrapped outside the center support body, an intermediate layer comprising at least two metal braid layers and plastic replacement layers arranged alternately, the metal braid layers being wrapped outside the dielectric layer in a braided manner, and the plastic replacement layers being wrapped outside the dielectric layer, a non-metal braid layer wrapped outside the intermediate layer in a braided manner, and a sheath layer wrapped outside the non-metal braid layer. The application can keep the stability of signal transmission and signal reception during fast movement, has soft performance, high tensile strength and certain elasticity, and ensures the stability and reliability of signal transmission and signal reception.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric wire and cable, in particular to a telescopic fishbone signal transmitting wire suitable for antenna equipment. BACKGROUND

[0002] At present, a typical Yagi antenna has three pairs of oscillators, and the whole structure is in the shape of a Chinese character "Wang". The active oscillator connected with the feeder, or the main oscillator, is in the middle of the three pairs of oscillators. The reflector, which is slightly longer than the active oscillator, is on one side of the active oscillator, and plays a role in weakening the electric wave coming from this direction or the electric wave emitted from the antenna. The director, which is slightly shorter than the active oscillator, is on the other side of the active oscillator, and can enhance the electric wave coming from this side or the electric wave emitted to this direction. The director can have many, and each length is slightly shorter than the adjacent one close to the active oscillator. The more directors, the more acute the direction and the higher the gain. However, in practice, too many directors will cause problems such as large volume, increased self-weight, higher requirement for material strength, and increased cost. Therefore, in general, a five-unit Yagi (i.e. three directors, one reflector and one active oscillator) is more appropriate.

[0003] Each of the directors and the reflector is made of a metal rod, and all the oscillators are fixed in parallel on a "girder" at a certain interval. The girder is also made of metal material. However, in movable occasions, the structure of the metal rod has a large space limitation. In addition, the conventional transmitting wire does not have telescopic performance, which makes it not suitable for fast-moving occasions such as radar vehicles, and cannot maintain the stability of signal transmission and reception. SUMMARY

[0004] The present application is to avoid the shortcomings of the prior art, and provides a telescopic fishbone signal transmitting wire suitable for antenna equipment, which can realize the contraction and expansion of the transmitting wire.

[0005] The technical problem of the present application is solved by the following technical scheme: a telescopic fishbone signal transmitting wire suitable for antenna equipment, comprising:

[0006] a center support body, the center support body is a PTFE wire;

[0007] a dielectric layer, the dielectric layer is wrapped on the outside of the center support body;

[0008] an intermediate layer, the intermediate layer comprises at least two segments of alternating metal braid layer and plastic replacement layer, the metal braid layer is wrapped on the outside of the dielectric layer in a braided manner, and the plastic replacement layer is wrapped on the outside of the dielectric layer;

[0009] A non-metallic braided layer, wherein the non-metallic braided layer is wrapped around the outside of the intermediate layer in a braided manner;

[0010] A sheath layer, which is wrapped around the outside of the non-metallic braided layer.

[0011] In several embodiments, the metal braided layer is woven from silver-plated copper wire.

[0012] In several embodiments, the plastic replacement layer is a fluoroplastic.

[0013] In several embodiments, the metal braided layer and the plastic replacement layer have the same outer diameter.

[0014] In several embodiments, the cross-section where the metal braided layer connects to the plastic replacement layer is smooth and burr-free.

[0015] In several embodiments, the non-metallic braided layer is woven from PTFE filaments.

[0016] In several embodiments, the longitudinal fracture strength of the central support is ≥150 MPa.

[0017] The beneficial effects of this invention are as follows:

[0018] This invention, through the structural design of the intermediate layer, enables the transmitter line to maintain the stability of signal transmission and reception during rapid movement, such as when it is being transported quickly on a radar vehicle. Because the transmitter line has flexible properties, high tensile strength, and a certain degree of resilience, it can ensure the structural stability of the Yagi antenna during high-speed vehicle movement, thereby ensuring the stability and reliability of signal transmission and reception. Attached Figure Description

[0019] The accompanying drawings described herein are for illustrative purposes only and do not represent all possible implementations, nor should they be considered as limiting the scope of the invention.

[0020] Figure 1 The overall structure of a telescopic fishbone signal transmission line suitable for an antenna device is schematically shown in one embodiment;

[0021] Figure 2 The structure of the intermediate layer in one embodiment is illustrated schematically;

[0022] Figure 3 The structure of the intermediate layer in another embodiment is illustrated schematically. Detailed Implementation

[0023] The embodiments of the present invention will be described in detail below. In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0024] Therefore, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] The terminology used herein is intended to explain the embodiments and is not intended to limit and / or restrict the invention.

[0026] For example, expressions such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "center", "relative", "front, back, left and right" indicate relative or absolute configuration. They not only indicate such a configuration in a strict sense, but also indicate a state of relative displacement with tolerance, or with an angle or distance that can achieve the same level of functionality.

[0027] Example 1

[0028] like Figures 1-2 As shown, the telescopic fishbone signal transmitting cable provided in this embodiment is mainly suitable for antenna equipment, especially Yagi antennas. It is a transmitting cable structure mainly composed of a central support 10, a dielectric layer 20, an intermediate layer 30, a non-metallic braided layer 40, and a sheath layer 50.

[0029] Specifically, the central support 10 is made of a material with high tensile strength, such as PTFE wire, which serves as the innermost layer to provide tensile strength. The longitudinal breaking strength of the central support 10 is greater than or equal to 150 MPa. The outer periphery of the central support 10 is wrapped with a dielectric layer 20, which serves to buffer and fix the central support 10.

[0030] The corresponding intermediate layer 30 is located on the outer periphery of the dielectric layer 20. The intermediate layer 30 includes two alternately arranged metal braided layers 31 and plastic replacement layers 32. The length of the metal braided layer 31 and the length of the plastic replacement layer 32 are the same, that is, the two are equally divided to form the overall length of the intermediate layer 30.

[0031] Here, the metal braided layer 31 is made of silver-plated copper wire, which is wrapped around the outside of the dielectric layer 20 in a braided manner to form the metal braided layer 31 structure.

[0032] Correspondingly, the plastic replacement layer 32 is made of fluoroplastics such as PFA, FEP, ETFE, etc., and is directly wrapped around the outside of the dielectric layer 20. Of course, it is the outside of the dielectric layer 20 without the metal braided layer 31.

[0033] When arranging the intermediate layer 30, a metal braided layer 31 can be formed on the entire dielectric layer 20 first, and then a portion of the metal braided layer 31 can be peeled off from the intermediate layer 30 as needed, and a plastic replacement layer 32 can be formed on the peeled portion.

[0034] For the metal braided layer 31 and the plastic replacement layer 32, it is necessary to ensure that they have the same outer diameter after being formed on the dielectric layer 20. Furthermore, the junction of the metal braided layer 31 and the plastic replacement layer 32, i.e. the cross-sectional position of the metal braided layer 31, must be smooth and burr-free to avoid the generation of tip discharge.

[0035] The non-metallic braided layer 40 is formed by PTFE yarn weaving and wrapping around the outside of the middle layer 30, while the outermost sheath layer 50 is directly wrapped around the outside of the non-metallic braided layer 40 and is also made of plastic.

[0036] Example 2

[0037] In this embodiment, the difference from embodiment 1 is that the intermediate layer 30 is formed by alternating two or more metal braided layers 31 and plastic replacement layers 32. The intermediate layer 30 is also formed by first forming the metal braided layer 31 on the entire dielectric layer 20, and then peeling it off in multiple areas of the metal braided layer 31 as needed, and then covering the plastic replacement layer 32 in the peeled areas, thereby forming alternating metal material and fluoroplastic material coating.

[0038] It should be noted that the lengths of the metal braided layer 31 and the plastic replacement layer 32 can be the same, or they can be designed to have different lengths depending on the specific circumstances. For example, the overall length of the metal braided layer 31 may be greater than that of the plastic replacement layer 32, or the overall length of the metal braided layer 31 may be less than that of the plastic replacement layer 32.

[0039] In summary, this invention, through its elastically stretchable intermediate layer structure, enables the transmitting line to maintain stability in signal transmission and reception during rapid movement, such as when it is being transported quickly on a radar vehicle. Because the transmitting line has flexible properties, high tensile strength, and a certain degree of resilience, it can ensure the structural stability of the Yagi antenna during high-speed vehicle movement, thereby ensuring the stability and reliability of signal transmission and reception.

[0040] The examples, embodiments, and particular forms of the invention illustrated have been shown and described in detail in the accompanying drawings and foregoing description, and should also be considered illustrative rather than restrictive. The description of a particular feature in one embodiment does not imply that those particular features must be limited to that one embodiment. Features of one embodiment can be used in combination with features of other embodiments, as will be understood by those skilled in the art, whether or not explicitly stated. Exemplary embodiments have been shown and described, and all variations and modifications fall within the spirit of the invention and are intended to be protected.

Claims

1. A retractable fishbone signal transmitting cable suitable for antenna equipment, characterized in that, include: A central support structure; A dielectric layer is wrapped around the outside of the central support. An intermediate layer comprising at least two alternating metal braided layers and plastic replacement layers, wherein the metal braided layers are woven around the outside of the dielectric layer and the plastic replacement layers are woven around the outside of the dielectric layer; A non-metallic braided layer, which is wrapped around the outside of the intermediate layer in a braided manner; and a sheath layer, which is wrapped around the outside of the non-metallic braided layer.

2. The telescopic fishbone signal transmitting cable suitable for antenna equipment according to claim 1, characterized in that, The metal braided layer is woven from silver-plated copper wire.

3. A telescopic fishbone signal transmitting cable suitable for antenna equipment according to claim 1, characterized in that, The plastic replacement layer is a fluoroplastic.

4. A telescopic fishbone signal transmitting cable suitable for antenna equipment according to claim 1, characterized in that, The metal braided layer and the plastic replacement layer have the same outer diameter.

5. A telescopic fishbone signal transmitting line suitable for antenna equipment according to claim 4, characterized in that, The cross-section where the metal braided layer connects to the plastic replacement layer is smooth and burr-free.

6. A telescopic fishbone signal transmitting line suitable for antenna equipment according to claim 1, characterized in that, The non-metallic braided layer is woven from PTFE yarn.

7. A telescopic fishbone signal transmitting line suitable for antenna equipment according to claim 1, characterized in that, The longitudinal fracture strength of the central support is ≥150 MPa.

8. A telescopic fishbone signal transmitting line suitable for antenna equipment according to claim 7, characterized in that, The central support is a PTFE wire.

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