Flame-retardant fireproof flat control cable

Abstract

The utility model discloses a flame-retardant fire-resistant flat control cable, which sequentially comprises an outer sheath, a wear-resistant layer, an outer flame-retardant layer, an outer shielding layer and a wrapping layer from outside to inside, a supporting framework and four cable cores are arranged in the wrapping layer, the supporting framework is of a flat structure and is made of a hard rubber material, two ends of the supporting framework are provided with notches, and the four cable cores are arranged in the supporting framework. Each gap is provided with two installation channels used for installing cable cores. The control cable provided by the utility model has relatively good flame-retardant and fire-resistant performance, shielding performance and wear-resistant performance, can effectively prevent fire from spreading, can still work normally under extreme conditions such as a fire disaster and the like, effectively prevents electromagnetic interference, and improves the signal transmission quality of the cable. The supporting framework is made of hard rubber, has strong restoring force, and can ensure that each cable core can be well wrapped and protected after being installed.

Description

Technical Field

[0001] This utility model relates to the field of cables, and more specifically, to a flame-retardant and fire-resistant flat control cable. Background Technology

[0002] Control cables are used to transmit power and signals. They connect various switches, relays, instruments, sensors, actuators, and other equipment to control and regulate production processes. They also connect to various communication devices to transmit and process data and signals. Control cables play a crucial role in automated control systems.

[0003] Existing control cables often lack sufficient flame-retardant and fire-resistant properties. In extreme situations such as fires, these cables can easily ignite and spread rapidly, causing power or signal transmission interruptions and potentially leading to larger fire accidents. Some control cables have weak shielding performance, failing to effectively prevent electromagnetic interference and resulting in degraded signal transmission quality. Especially in applications sensitive to electromagnetic interference, this interference can severely impact the stability and reliability of the control system. Some control cables may also lack sufficient abrasion resistance, particularly cables that require frequent movement or operate in harsh environments, making them prone to performance degradation or damage due to wear. Utility Model Content

[0004] The present invention aims to overcome the defects of the prior art and provide a flame-retardant and fire-resistant flat control cable.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a control cable, comprising, from the outside to the inside, an outer sheath, a wear-resistant layer, an outer flame-retardant layer, an outer shielding layer, and a wrapping layer. The wrapping layer contains a support frame and four cable cores. The support frame has a flat structure and is made of hard rubber. Both ends of the support frame have notches, and each notch has two installation channels for installing the cable cores. The four cable cores are two first cable cores, one second cable core, and one third cable core. The four installation channels are two first installation channels, one second installation channel, and one third installation channel. A cable core includes a first insulation layer and two first conductors located within the first insulation layer. Each first conductor includes a first conductor and a first fire-resistant layer covering the first conductor. A second cable core includes an inner sheath, an inner shielding layer located within the inner sheath, and two second conductors located within the inner shielding layer. From the inside out, each second conductor includes a second conductor, a second fire-resistant layer, a second insulation layer, and an inner flame-retardant layer. A third cable core includes a third conductor, a third fire-resistant layer, and a third insulation layer from the inside out. Both the inner and outer flame-retardant layers are made of flame-retardant polyolefin material. The first, second, and third fire-resistant layers are all mica tape fire-resistant layers.

[0006] Furthermore, each notch has two opposing semicircular first grooves, which form the first mounting channel. One notch has two opposing semicircular second grooves, which form the second mounting channel. The other notch has two opposing semicircular third grooves, which form the third mounting channel.

[0007] Furthermore, the wear-resistant layer is made of polyethylene material.

[0008] This enhances the cable's abrasion resistance.

[0009] Furthermore, the inner shielding layer is a copper wire braided shielding layer.

[0010] Furthermore, the outer shielding layer is an aluminum foil shielding layer.

[0011] This improves the shielding performance of the cable.

[0012] Furthermore, the wrapping layer is a polyester tape wrapping layer.

[0013] This provides reliable electrical insulation and mechanical protection.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The control cable of this application has good flame-retardant and fire-resistant properties, which can effectively prevent the spread of fire and ensure that the cable can still work normally in extreme situations such as fire.

[0016] 2. The control cable of this application has good shielding performance, which can effectively prevent electromagnetic interference and improve the signal transmission quality of the cable.

[0017] 3. The control cable of this application has a support frame made of hard rubber, which has strong resilience and can ensure that each cable core is well wrapped and protected after installation.

[0018] 4. The control cable of this application has good wear resistance, thereby extending its service life, and is particularly suitable for cables that need to be moved frequently or are in harsh environments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the control cable;

[0020] Figure 2 This is a magnified view of region A;

[0021] Figure 3 This is a cross-sectional view of the control cable;

[0022] Figure 4 This is a magnified view of region B.

[0023] Explanation of reference numerals in the attached diagram: Outer sheath 1; Abrasion-resistant layer 2; Outer flame-retardant layer 3; Outer shielding layer 4; Wrapping layer 5; Support frame 6; Notch 6.1; First cable core 7; First insulation layer 7.1; First fire-resistant layer 7.2; First conductor 7.3; Second cable core 8; Inner sheath 8.1; Inner shielding layer 8.2; Inner flame-retardant layer 8.3; Second insulation layer 8.4; Second fire-resistant layer 8.5; Second conductor 8.6; Third cable core 9; Third insulation layer 9.1; Third fire-resistant layer 9.2; Third conductor 9.3. Detailed Implementation

[0024] 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.

[0025] This utility model provides, for example Figure 1-4 The illustrated flame-retardant and fire-resistant flat control cable comprises, from the outside to the inside, an outer sheath 1, a wear-resistant layer 2, an outer flame-retardant layer 3, an outer shielding layer 4, and a wrapping layer 5. The wrapping layer 5 contains a support frame 6 and four cable cores. The support frame 6 is flat and made of hard rubber. Both ends of the support frame 6 have notches 6.1, each notch having two mounting channels for installing the cable cores. The four cable cores are two first cable cores 7, one second cable core 8, and one third cable core 9. The four mounting channels are two first mounting channels, one second mounting channel, and one third mounting channel. The first cable core 7 includes a first insulation layer 7.1 and two second insulation layers 7.1 located within the first insulation layer 7.1. The first core includes a first conductor 7.3 and a first fire-resistant layer 7.2 covering the first conductor 7.3. The second core 8 includes an inner sheath 8.1, an inner shielding layer 8.2 located within the inner sheath 8.1, and two second cores located within the inner shielding layer 8.2. The second core, from the inside out, includes a second conductor 8.6, a second fire-resistant layer 8.5, a second insulation layer 8.4, and an inner flame-retardant layer 8.3. The third core 9, from the inside out, includes a third conductor 9.3, a third fire-resistant layer 9.2, and a third insulation layer 9.1. The inner flame-retardant layer 8.3 and the outer flame-retardant layer 3 are both made of flame-retardant polyolefin material. The first fire-resistant layer 7.2, the second fire-resistant layer 8.5, and the third fire-resistant layer 9.2 are all mica tape fire-resistant layers.

[0026] Each notch 6.1 has two opposing semi-circular first grooves, which form the first mounting channel. One notch also has two opposing semi-circular second grooves, which form the second mounting channel. The other notch has two opposing semi-circular third grooves, which form the third mounting channel. The wear-resistant layer 2 is made of polyethylene. The inner shielding layer 8.2 is a copper wire braided shielding layer. The outer shielding layer 4 is an aluminum foil shielding layer. The wrapping layer 5 is a polyester tape wrapping layer.

[0027] Working principle: The control cable of this application has notches at both ends of a flat support frame. Opening these notches allows for easy installation of each cable core into its corresponding mounting channel. The support frame is made of hard rubber, providing strong resilience, thus ensuring that each cable core is well-wrapped and protected after installation. The first, second, and third cable cores each have different structures, allowing the cable to meet diverse application requirements.

[0028] The control cable of this application features an inner and outer flame-retardant layer, giving it excellent flame-retardant properties and effectively preventing the spread of fire. Each cable core is also equipped with a fire-resistant layer, further enhancing the cable's fire resistance and ensuring normal operation even in extreme conditions such as fires. The double shielding of the outer and inner shielding layers effectively prevents electromagnetic interference and improves the cable's signal transmission quality. Furthermore, the inclusion of a wear-resistant layer between the outer sheath and the outer flame-retardant layer enhances the cable's wear resistance and extends its service life, making it particularly suitable for cables requiring frequent movement or operating in harsh environments.

[0029] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present invention without departing from the scope defined by the claims.

Claims

1. A flame-retardant and fire-resistant flat control cable, characterized in that, From the outside in, the structure includes an outer sheath, a wear-resistant layer, an outer flame-retardant layer, an outer shielding layer, and a wrapping layer. The wrapping layer contains a support frame and four cable cores. The support frame is flat and made of hard rubber. Both ends of the support frame have notches, and each notch has two mounting channels for installing the cable cores. The four cable cores are two first cable cores, one second cable core, and one third cable core. The four mounting channels are two first mounting channels, one second mounting channel, and one third mounting channel. The first cable core includes a first insulation layer and a layer located at the... The cable core comprises two first cores within an insulation layer. Each first core includes a first conductor and a first fire-resistant layer covering the first conductor. The second core includes an inner sheath, an inner shielding layer within the inner sheath, and two second cores within the inner shielding layer. From the inside out, each second core includes a second conductor, a second fire-resistant layer, a second insulation layer, and an inner flame-retardant layer. The third core includes a third conductor, a third fire-resistant layer, and a third insulation layer from the inside out. Both the inner and outer flame-retardant layers are made of flame-retardant polyolefin material. The first, second, and third fire-resistant layers are all mica tape fire-resistant layers.

2. The flame-retardant and fire-resistant flat control cable according to claim 1, characterized in that, Each notch has two opposing semicircular first grooves, which form the first mounting channel. One notch has two opposing semicircular second grooves, which form the second mounting channel. The other notch has two opposing semicircular third grooves, which form the third mounting channel.

3. The flame-retardant and fire-resistant flat control cable according to claim 1, characterized in that, The wear-resistant layer is made of polyethylene.

4. The flame-retardant and fire-resistant flat control cable according to claim 1, characterized in that, The inner shielding layer is a copper wire braided shielding layer.

5. The flame-retardant and fire-resistant flat control cable according to claim 1, characterized in that, The outer shielding layer is an aluminum foil shielding layer.

6. The flame-retardant and fire-resistant flat control cable according to claim 1, characterized in that, The wrapping layer is a polyester tape wrapping layer.

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