Polyvinyl chloride sheath armored signal cable

Abstract

The utility model discloses a polyvinyl chloride sheath armored signal cable which comprises an outer sheath, an armored layer, a second shielding layer and a wrapping layer which are sequentially arranged from outside to inside, a first cable core and multiple sets of second cable cores are arranged in the wrapping layer, each set of second cable cores comprises two second cable cores, the inner sheath is provided with a first containing groove capable of containing one set of second cable cores, and the outer sheath is provided with a second containing groove capable of containing one set of second cable cores. A supporting framework is arranged between the two second cable cores in each group, and the outer sheath is made of polyvinyl chloride materials. The signal cable provided by the utility model has a multi-layer shielding structure, so that the electromagnetic shielding performance of the cable is good, the influence of external electromagnetic interference on internal signals can be effectively prevented, and the signal cable is provided with a plurality of cable cores, so that the signal transmission capability is strong, and the signal cable is suitable for occasions with relatively high signal transmission requirements; and the supporting framework is arranged between the two second cable cores in each group, so that the mechanical performance of the cable is good.

Description

Technical Field

[0001] The utility model relates to the field of cables, and more specifically to a polyvinyl chloride sheathed armored signal cable. Background Art

[0002] Signal cables are special types of cables used to transmit various signals, and they play a vital role in audio engineering, video transmission, data communications, etc. With the rise of applications such as high-definition video, high-fidelity audio, and high-speed data communications, the requirements for signal cables have become more stringent.

[0003] The shielding structure of existing signal cables is relatively simple, and the electromagnetic shielding performance may not be strong enough to effectively resist external electromagnetic interference. Especially in situations where signal transmission requirements are high, poor electromagnetic shielding performance will cause signal distortion and interference, affecting the clarity and accuracy of signal transmission, and when used in complex electromagnetic environments, the cable may be easily affected by the surrounding electromagnetic field, resulting in a decrease in signal quality. In addition, ordinary signal cables do not have sufficient mechanical properties and are easily affected by external physical shocks, such as squeezing and pulling, which can cause cable damage or breakage, affecting the stability and reliability of signal transmission. Utility Model Content

[0004] The utility model aims to overcome the defects of the prior art and provides a polyvinyl chloride sheathed armored signal cable.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polyvinyl chloride sheathed armored signal cable, comprising an outer sheath, an armor layer, a second shielding layer and a wrapping layer arranged in sequence from the outside to the inside, the wrapping layer having a first cable core and multiple groups of second cable cores, the first cable core comprising an inner sheath, a first shielding layer and multiple first core wires in sequence from the outside to the inside, the first core wire comprising a first conductor and a first insulating layer wrapping the first conductor, the inner sheath having a first accommodating groove capable of accommodating a group of second cable cores, each group of second cable cores having two, a supporting skeleton being arranged between each group of two second cable cores, the supporting skeleton comprising a supporting portion and a limiting portion fixedly connected to the supporting portion, the supporting portion being capable of abutting the wrapping layer, both sides of the limiting portion having a second accommodating groove capable of accommodating a second cable core, the second cable core comprising a cable core wrapping layer and two second core wires located in the cable core wrapping layer, the second core wire comprising a second conductor and a second insulating layer wrapping the second conductor, and the outer sheath is made of polyvinyl chloride material.

[0006] Furthermore, the inner sheath is made of polyethylene material.

[0007] Furthermore, the first insulating layer and the second insulating layer are both polyethylene insulating layers.

[0008] Therefore, the cable has good insulation performance and corrosion resistance.

[0009] Furthermore, the armor layer is a steel wire armor layer.

[0010] Thus the cable has good mechanical properties.

[0011] Furthermore, the first shielding layer and the second shielding layer are both copper wire braided shielding layers.

[0012] Therefore, the cable has better anti-interference performance.

[0013] Furthermore, the first accommodating groove has two abutting surfaces for abutting the second cable core and having an arc-shaped cross-section.

[0014] Thereby the internal structure of the cable is more compact.

[0015] Furthermore, the second cable core has four groups, the first accommodating grooves have four groups, and the four first accommodating grooves are distributed in a ring shape with equal intervals.

[0016] Thereby the overall structure of the cable is more stable.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The signal cable of the present application has a multi-layer shielding structure, so that the cable has good electromagnetic shielding performance, which can effectively prevent the influence of external electromagnetic interference on internal signals, and has multiple cable cores, so that the signal transmission capability is strong, and it is suitable for occasions with high requirements for signal transmission.

[0019] 2. The signal cable of the present application has a steel wire armor layer, and a supporting frame is provided between each group of two second cable cores for supporting and fixing the second cable cores, so that the cable has good mechanical properties and can maintain good performance even in harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of Example 1;

[0021] Figure 2 is a cross-sectional view of Example 1;

[0022] Figure 3 This is a schematic diagram of the internal structure of the wrapping layer of Example 1;

[0023] Figure 4 This is a schematic diagram of Example 2.

[0024] Explanation of the reference numerals: 1.1 outer sheath; 1.2 armor layer; 1.3 second shielding layer; 1.4 sheath; 2 first cable core; 2.1 inner sheath; 2.1.1 first accommodating groove; 2.2 first shielding layer; 2.3 first insulating layer; 2.4 first conductor; 3 second cable core; 3.1 cable core sheath; 3.2 second insulating layer; 3.3 second conductor; 4 supporting frame; 4.1 supporting portion; 4.2 limiting portion. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] This embodiment provides Figure 1-3 The polyvinyl chloride sheathed armored signal cable shown in the figure comprises an outer sheath 1.1, an armor layer 1.2, a second shielding layer 1.3 and a wrapping layer 1.4 arranged in sequence from the outside to the inside, wherein the wrapping layer 1.4 has a first cable core 2 and a plurality of second cable cores 3, wherein the first cable core 2 comprises an inner sheath 2.1, a first shielding layer 2.2 and a plurality of first core wires in sequence from the outside to the inside, wherein the first core wire comprises a first conductor 2.4 and a first insulating layer 2.3 wrapping the first conductor 2.4, wherein the inner sheath 2.1 has a first accommodating groove 2.1.1 capable of accommodating a group of second cable cores, wherein each group of second cable cores has two A supporting skeleton 4 is arranged between each group of two second cable cores 3, the supporting skeleton 4 comprises a supporting portion 4.1 and a limiting portion 4.2 fixedly connected to the supporting portion 4.1, the supporting portion 4.1 can abut against the sheath 1.4, both sides of the limiting portion 4.2 have a second accommodating groove capable of accommodating a second cable core 3, the second cable core 3 comprises a cable core sheath 3.1 and two second core wires located in the cable core sheath 3.1, the second core wire comprises a second conductor 3.3 and a second insulating layer 3.2 wrapping the second conductor 3.3, and the outer sheath 1.1 is made of polyvinyl chloride material.

[0028] The inner sheath 2.1 is made of polyethylene material; the first insulating layer 2.3 and the second insulating layer 3.2 are both polyethylene insulating layers; the armor layer 1.2 is a steel wire armor layer; the first shielding layer 2.2 and the second shielding layer 1.3 are both copper wire braided shielding layers; the first accommodating groove 2.1.1 has two abutting surfaces with an arc-shaped cross-section for abutting the second cable core 3; the second cable core 3 has four groups, the first accommodating grooves 2.1.1 have four, and the four first accommodating grooves 2.1.1 are distributed in a ring shape with equal spacing.

[0029] Working principle: The signal cable of the present application has a multi-layer shielding structure, so the cable has good electromagnetic shielding performance, can effectively prevent the influence of external electromagnetic interference on internal signals, and has multiple cable cores, so the signal transmission capability is strong, and it is suitable for occasions with high requirements for signal transmission. In addition, the structure of the steel wire armor layer is tight and solid, which can enhance the tensile strength and compressive performance of the cable, and protect the core wire inside the cable from damage by external forces. The support skeleton plays a supporting and fixing role between each group of two second cable cores, and the two arc-shaped abutting surfaces of the support skeleton make the connection between the first cable core and the second cable core tight, and effectively reduce the risk of possible loosening, thereby further enhancing the structural stability and compressive resistance of the cable, so that the cable can operate stably in various complex working environments and working conditions. During the specific installation, after the first cable core is manufactured, the supporting frame is accommodated in the first accommodating groove, and then the two second cable cores are respectively embedded in the two second accommodating grooves of the supporting frame, and the two arc-shaped abutting surfaces are respectively abutted against the two second cable cores. After multiple groups of second cable cores are installed, the winding layer, the second shielding layer, the steel wire armor layer and the polyvinyl chloride outer sheath are manufactured in sequence.

[0030] Example 2

[0031] like Figure 4 As shown, the difference between Example 2 and Example 1 is that the cable is not installed with the supporting frame, so it can be used in occasions where the mechanical properties of the signal cable are not required to be high.

[0032] Although the present invention has been illustrated and described with respect to preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A polyvinyl chloride sheathed armored signal cable, characterized in that: It comprises an outer sheath, an armor layer, a second shielding layer and a wrapping layer which are arranged in sequence from the outside to the inside, wherein the wrapping layer has a first cable core and multiple groups of second cable cores, wherein the first cable core comprises an inner sheath, a first shielding layer and multiple first core wires in sequence from the outside to the inside, wherein the first core wire comprises a first conductor and a first insulating layer wrapping the first conductor, wherein the inner sheath has a first accommodating groove capable of accommodating a group of second cable cores, wherein each group of second cable cores has two first cores, wherein a supporting skeleton is arranged between each group of two second cable cores, wherein the supporting skeleton comprises a supporting portion and a limiting portion fixedly connected to the supporting portion, wherein the supporting portion can abut against the wrapping layer, wherein both sides of the limiting portion have a second accommodating groove capable of accommodating a second cable core, wherein the second cable core comprises a cable core wrapping layer and two second core wires located in the cable core wrapping layer, wherein the second core wire comprises a second conductor and a second insulating layer wrapping the second conductor, and wherein the outer sheath is made of polyvinyl chloride material.

2. The polyvinyl chloride sheathed armored signal cable according to claim 1, characterized in that: The inner sheath is made of polyethylene material.

3. The polyvinyl chloride sheathed armored signal cable according to claim 1, characterized in that: The first insulating layer and the second insulating layer are both polyethylene insulating layers.

4. The polyvinyl chloride sheathed armored signal cable according to claim 1, characterized in that: The armor layer is a steel wire armor layer.

5. The polyvinyl chloride sheathed armored signal cable according to claim 1, characterized in that: The first shielding layer and the second shielding layer are both copper wire braided shielding layers.

6. The polyvinyl chloride sheathed armored signal cable according to claim 1, characterized in that: The first accommodating groove has two abutting surfaces for abutting the second cable core and having arc-shaped cross-sections.

7. The polyvinyl chloride sheathed armored signal cable according to claim 1, characterized in that: The second cable cores have four groups, the first accommodating grooves have four groups, and the four first accommodating grooves are distributed in a ring shape with equal intervals.

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