Flexible fireproof cable with good bending resistance

Abstract

This invention discloses a flexible fire-resistant cable with good bending resistance, specifically relating to the cable industry. It includes an insulation layer, an inner wall of which is provided with a pressure-resistant layer, and a support frame installed between the outer side of the pressure-resistant layer and the inner wall of the insulation layer. A wire core is disposed inside the insulation layer outside the support frame. Compared to existing technologies, this invention, by providing connecting rod one and connecting rod two, utilizes the external force applied when the cable is bent. This causes connecting rod one and connecting rod two to deform outwards as the cable bends, dispersing the bending pressure to the surface of the pressure-dispersing layer. This prevents breakage due to stress at a single point. Simultaneously, the support rods one and two protect the wire core. When the cable is bent, the pressure passing through support rods one and two prevents excessive deformation of the wire core, improving the cable's pressure resistance and preventing damage to the cable sheath under prolonged bending.

Description

Technical Field

[0001] This invention relates to the field of cables, and more specifically, to a flexible fire-resistant cable with good bending resistance. Background Technology

[0002] With the development of society, cables are widely used in the field of power engineering. We are also paying attention to the importance of cables in fire safety and convenience. Depending on the location and purpose of the cable, there are many ways to lay the cable. Therefore, the performance requirements of the cable are more stringent.

[0003] Currently, when using cables, it is necessary to bend the cable at bends before proceeding with the installation. This makes subsequent laying easier. However, this method can easily damage the integrity of the cable. Under pressure, the surface of the wire may break at the bend. Furthermore, since the cable is bent manually, it will slowly recover over time without external force, thus affecting the stability of the internal core. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present invention provide a flexible fireproof cable with good bending resistance, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a flexible fireproof cable with good bending resistance, comprising an insulation layer, an anti-compression layer provided on the inner wall of the insulation layer, a support frame installed between the outer side of the anti-compression layer and the inner wall of the insulation layer, and a wire core provided inside the insulation layer on the outer side of the support frame;

[0008] A support layer is provided on the outer side of the insulation layer, a fireproof layer is provided on the outer side of the support layer, a fixing layer one is provided on the outer side of the fireproof layer, a control layer is provided on the outer side of the fixing layer one, a fixing layer two is provided on the outer side of the control layer, a pressure dispersion layer is provided on the outer surface of the fixing layer two, a support strip one is provided on the outer surface of the inner wall of the support layer, a support strip two is provided on the inner surface of the inner wall of the support layer, an electromagnet is provided on the inner wall of the control layer, a connecting rod one is provided on the outer side of the inner wall of the pressure dispersion layer, a connecting rod two is provided on the inner side of the inner wall of the pressure dispersion layer, an isolation block is provided between the fixing layer two and the fixing layer one, a deformation strip one is provided on the outer surface of the inner wall of the control layer, and a deformation strip one is provided on the inner surface of the inner wall of the control layer above the deformation strip one. Article 2, an electrical contact 1 is provided on the inner surface of the second deformation strip, a conductive point 1 is provided on the surface of the first deformation strip below the electrical contact 1, a pressing block is provided on the inner wall of the pressure dispersion layer above the conductive point 1, a fixing cavity is provided on the inner surface of the inner wall of the pressure dispersion layer below the pressing block, a movable block is movably installed on the inner wall of the fixing cavity, a spring piece is provided on the inner surface of the movable block and is installed together with the fixing cavity, a movable groove is provided on the inner surface of the inner wall of the pressing block, an electrical contact 2 is provided on the outer surface of the movable block, and the outer end of the electrical contact 2 penetrates and extends into the interior of the movable groove, a conductive point 2 is provided on the inner wall of the movable groove below the electrical contact 2, a push rod is provided on the surface of the movable block inside the electrical contact 2, and the outer end of the push rod penetrates and extends into the inner side of the pressing block.

[0009] Detailed implementation: During use, when the cable is bent, connecting rod one and connecting rod two will deform to both sides as the cable bends, dispersing the pressure during bending to the surface of the pressure dispersion layer. This prevents the cable from easily breaking due to stress at one point. At the same time, the support strips two and one can protect the wire core. When the cable is bent, the pressure passing through support strips two and one can prevent the wire core from deforming excessively, improving the cable's compressive strength and preventing the cable sheath from being easily damaged under prolonged bending.

[0010] In a preferred embodiment, a fire baffle is provided on the outer surface of the support frame, and there are three support frames in total, which are distributed in a ring around the center point of the pressure-resistant layer.

[0011] In a preferred embodiment, the first connecting rod and the second connecting rod are cross-connected, and a connector is provided at the connection point between the first connecting rod and the second connecting rod.

[0012] In a preferred embodiment, the space between the wire core and the support frame is filled with fire-retardant material, and the interior of the fireproof layer is filled with fire-retardant material.

[0013] In a preferred embodiment, the second support strip and the first support strip are made of an elastic, pressure-resistant material, and the interior of the first fixing layer and the second fixing layer are filled with magnetorheological fluid, the main components of which are carbonyl iron powder and silicone oil.

[0014] In a preferred embodiment, the positions of the first conductive point and the first electrical contact are symmetrical to each other, and the first conductive point is electrically connected to the electromagnet.

[0015] In a preferred embodiment, the movable slot, electrical contact two, and conductive point two are symmetrically distributed with respect to the midpoint of the movable block, and conductive point two is electrically connected to electrical contact one.

[0016] In a preferred embodiment, the vertical cross-sections of both the first deformation strip and the second deformation strip are L-shaped, and the first deformation strip and the second deformation strip are distributed vertically relative to the center point of the control layer. The outer surface of the pressing block is arc-shaped.

[0017] (III) Beneficial Effects

[0018] This invention provides a flexible fire-resistant cable with good bending resistance, which has the following advantages:

[0019] 1. Compared with the prior art, this invention, by providing connecting rod one and connecting rod two, uses the external force applied when bending the cable to cause connecting rod one and connecting rod two to deform and move to both sides as the cable bends, dispersing the pressure during bending to the surface of the pressure dispersion layer. This prevents easy breakage due to stress at one point. At the same time, the setting of support bar two and support bar one can protect the wire core. When the cable is bent, the pressure passes through support bar two and support bar one to prevent excessive deformation of the wire core, improve the cable's compressive strength, and prevent the cable sheath from being easily damaged under long-term bending.

[0020] 2. Compared with the prior art, this invention, by setting deformation strip one and deformation strip two, allows them to deform under pressure. The two strips move closer to each other, causing conductive point one and electrical contact one to come into contact and generate current. The current energizes the electromagnet, which generates magnetism. By utilizing the magnetorheological effect, the slurry inside the fixing layer two and fixing layer one changes from liquid to near solid. This prevents the cable from bending excessively and also fixes the bent part, preventing the cable from slowly returning to its original state when it is loosened, which would affect the connection effect of the cable. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 For the present invention Figure 1A magnified structural diagram of point A in the middle.

[0023] Figure 3 This is a partial side view of the support layer of the present invention.

[0024] Figure 4 For the present invention Figure 3 A magnified structural diagram at point B in the middle.

[0025] Figure 5 For the present invention Figure 3 A magnified structural diagram at point C.

[0026] The attached diagram is labeled as follows: 1. Insulation layer; 2. Pressure-resistant layer; 3. Support frame; 4. Wire core; 5. Support layer; 6. Fireproof layer; 7. Fixing layer one; 8. Control layer; 9. Fixing layer two; 10. Pressure dispersion layer; 11. Support bar one; 12. Support bar two; 13. Electromagnet; 14. Connecting rod one; 15. Connecting rod two; 16. Isolation block; 17. Deformation bar one; 18. Deformation bar two; 19. Electrical contact one; 20. Conductive point one; 21. Pressing block; 22. Fixing cavity; 23. Movable block; 24. Spring piece; 25. Movable groove; 26. Electrical contact two; 27. Conductive point two; 28. Top rod; 29. ​​Fire baffle; 30. Connector. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] This invention provides a flexible fireproof cable with good bending resistance, including an insulation layer 1, an anti-compression layer 2 provided on the inner wall of the insulation layer 1, a support frame 3 installed between the outer side of the anti-compression layer 2 and the inner wall of the insulation layer 1, and a wire core 4 provided inside the insulation layer 1 on the outer side of the support frame 3.

[0029] Refer to the instruction manual appendix Figure 1-5In this embodiment, a flexible fire-resistant cable with good bending resistance has a support layer 5 on the outside of the insulation layer 1, a fireproof layer 6 on the outside of the support layer 5, a fixing layer 7 on the outside of the fireproof layer 6, a control layer 8 on the outside of the fixing layer 7, a fixing layer 9 on the outside of the control layer 8, a pressure dispersion layer 10 on the outer surface of the fixing layer 9, a support strip 11 on the outer surface of the inner wall of the support layer 5, a support strip 12 on the inner surface of the inner wall of the support layer 5, an electromagnet 13 on the inner wall of the control layer 8, a connecting rod 14 on the outside of the inner wall of the pressure dispersion layer 10, a connecting rod 15 on the inner surface of the inner wall of the pressure dispersion layer 10, an isolation block 16 between the fixing layer 9 and the fixing layer 7, a deformation strip 17 on the outer surface of the inner wall of the control layer 8, and a deformation strip on the inner surface of the inner wall of the control layer 8 above the deformation strip 17. 18. An electrical contact 19 is provided on the inner surface of the deformation strip 18. A conductive point 20 is provided on the surface of the deformation strip 17 below the electrical contact 19. A pressing block 21 is provided on the inner wall of the pressure dispersion layer 10 above the conductive point 20. A fixing cavity 22 is provided on the inner surface of the inner wall of the pressure dispersion layer 10 below the pressing block 21. A movable block 23 is movably installed on the inner wall of the fixing cavity 22. The inner surface of the movable block 23 is provided with a connection to the fixing cavity 22. The spring piece 24 is installed together between the two. The inner surface of the inner wall of the pressing block 21 is provided with a movable groove 25. The outer surface of the movable block 23 is provided with an electrical contact 26, and the outer end of the electrical contact 26 penetrates and extends into the interior of the movable groove 25. The inner wall of the movable groove 25 below the electrical contact 26 is provided with a conductive point 27. The surface of the movable block 23 inside the electrical contact 26 is provided with a push rod 28, and the outer end of the push rod 28 penetrates and extends into the inner side of the pressing block 21.

[0030] Furthermore, fire baffles 29 are provided on the outer surface of the support frame 3. There are three support frames 3 in total, which are distributed around the center point of the pressure-resistant layer 2.

[0031] Furthermore, the first connecting rod 14 and the second connecting rod 15 are cross-connected, and a connector 30 is provided at the connection between the first connecting rod 14 and the second connecting rod 15.

[0032] Furthermore, the space between the core 4 and the support frame 3 is filled with fire-retardant material, and the interior of the fireproof layer 6 is filled with fire-retardant material.

[0033] Furthermore, the second support strip 12 and the first support strip 11 are made of an elastic, pressure-resistant material, and the interior of the first fixing layer 7 and the second fixing layer 9 are filled with magnetorheological fluid, the main components of which are carbonyl iron powder and silicone oil.

[0034] Furthermore, the positions of the conductive point 20 and the electrical contact 19 are symmetrical to each other, and the conductive point 20 is electrically connected to the electromagnet 13.

[0035] Furthermore, the movable groove 25, the second electrical contact 26, and the second conductive point 27 are symmetrically distributed with the midpoint of the movable block 23 as a reference, and the second conductive point 27 is electrically connected to the first electrical contact 19.

[0036] Furthermore, the vertical cross-sections of the first deformation strip 17 and the second deformation strip 18 are both L-shaped, and the first deformation strip 17 and the second deformation strip 18 are distributed vertically with the center point of the control layer 8 as the reference. The outer surface of the pressing block 21 is arc-shaped.

[0037] In summary, the workflow of this invention is as follows: During use, when the cable is bent, connecting rod 14 and connecting rod 25 deform to both sides as the cable bends, dispersing the pressure during bending to the surface of the pressure dispersion layer 10. This prevents breakage due to stress at a single point. Simultaneously, the support bars 22 and 11 protect the conductor 4. When the cable is bent, the pressure passing through the support bars 22 and 11 prevents excessive deformation of the conductor 4, improving the cable's compressive strength and preventing damage to the cable sheath from prolonged bending. When the cable is bent to a certain extent, conductive point 20 and electrical contact 19 come into contact and generate electricity. When current is applied to electromagnet 13, it generates magnetism. Utilizing the magnetorheological effect, the slurry inside the second fixed layer 9 and the first fixed layer 7 changes from a liquid to a near-solid state. This prevents excessive bending of the cable and also fixes the bent area, preventing the cable from slowly returning to its original position when released, which would affect the connection. At the same time, if it is necessary to adjust the bending degree of the cable, the pressing block 21 can be pressed. The pressing block 21 drives the push rod 28 to move inward. The push rod 28 causes the electrical contact 26 on the surface of the movable block 23 to separate from the conductive point 27, de-energizing the electrical contact 19 and causing the electromagnet 13 to lose its magnetism, thus easily adjusting the bending degree of the cable.

[0038] Working principle of this invention:

[0039] Refer to the instruction manual appendix Figure 1-3The flexible fireproof cable with good bending resistance of the present invention has the following characteristics: When the cable is bent, the connecting rod 14 and the connecting rod 2 15 will deform to both sides as the cable bends, dispersing the pressure during bending to the surface of the pressure dispersion layer 10. This prevents the cable from being easily broken due to stress at one point. At the same time, the support strip 2 12 and the support strip 11 can protect the core 4. When the cable is bent, the pressure passing through the support strip 2 12 and the support strip 11 can prevent the core 4 from being excessively deformed, improving the cable's compressive strength and preventing the cable sheath from being easily damaged under long-term bending.

[0040] Refer to the instruction manual appendix Figure 1-5 The flexible fireproof cable with good bending resistance of this embodiment of the invention, when bent to a certain extent, generates current by the contact between conductive point 20 and electrical contact 19. The current energizes the electromagnet 13, which generates magnetism. Utilizing the magnetorheological effect, the slurry inside the fixing layer 9 and fixing layer 7 changes from liquid to near-solid, preventing excessive bending of the cable and fixing the bent area. This prevents the cable from slowly returning to its original state when loosened, which would affect the connection effect. If it is necessary to adjust the bending degree of the cable, the pressing block 21 can be pressed. The pressing block 21 drives the top rod 28 to move inward. The top rod 28 causes the electrical contact 26 on the surface of the movable block 23 to separate from the conductive point 27, de-energizing the electrical contact 19 and causing the electromagnet 13 to lose its magnetism, thereby easily adjusting the bending degree of the cable.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible fire-resistant cable with good bending resistance, comprising an insulation layer (1), characterized in that: The inner wall of the insulation layer (1) is provided with a pressure-resistant layer (2), and a support frame (3) is installed between the outer side of the pressure-resistant layer (2) and the inner wall of the insulation layer (1). A wire core (4) is provided inside the insulation layer (1) outside the support frame (3). A support layer (5) is provided on the outer side of the insulation layer (1), a fireproof layer (6) is provided on the outer side of the support layer (5), a fixing layer one (7) is provided on the outer side of the fireproof layer (6), a control layer (8) is provided on the outer side of the fixing layer one (7), a fixing layer two (9) is provided on the outer side of the control layer (8), a pressure dispersion layer (10) is provided on the outer surface of the fixing layer two (9), a support strip one (11) is provided on the outer surface of the inner wall of the support layer (5), and a support strip is provided on the inner surface of the inner wall of the support layer (5). Second (12), an electromagnet (13) is provided on the inner wall of the control layer (8), a connecting rod one (14) is provided on the outer side of the inner wall of the pressure dispersion layer (10), a connecting rod two (15) is provided on the inner side of the inner wall of the pressure dispersion layer (10), an isolation block (16) is provided between the second fixing layer (9) and the first fixing layer (7), a deformation strip one (17) is provided on the outer surface of the inner wall of the control layer (8), and a deformation strip two (18) is provided on the inner surface of the inner wall of the control layer (8) above the deformation strip one (17). (18) An electrical contact (19) is provided on the inner surface. A conductive point (20) is provided on the surface of the deformation strip (17) below the electrical contact (19). A pressing block (21) is provided on the inner wall of the pressure dispersion layer (10) above the conductive point (20). A fixing cavity (22) is provided on the inner surface of the inner wall of the pressure dispersion layer (10) below the pressing block (21). A movable block (23) is movably installed on the inner wall of the fixing cavity (22). A common feature between the movable block (23) and the fixing cavity (22) is provided on the inner surface of the movable block (23). The installed spring (24) has a movable groove (25) on the inner surface of the inner wall of the pressing block (21), and an electrical contact (26) on the outer surface of the movable block (23). The outer end of the electrical contact (26) penetrates and extends into the interior of the movable groove (25). A conductive point (27) is provided on the inner wall of the movable groove (25) below the electrical contact (26). A push rod (28) is provided on the surface of the movable block (23) inside the electrical contact (26). The outer end of the push rod (28) penetrates and extends into the inner side of the pressing block (21). The second support bar (12) and the first support bar (11) are made of an elastic, pressure-resistant material. The interior of the first fixing layer (7) and the second fixing layer (9) are filled with magnetorheological fluid, which is mainly composed of carbonyl iron powder and silicone oil.

2. The flexible fire-resistant cable with good bending resistance according to claim 1, characterized in that: Fire baffles (29) are provided on the outer surface of the support frame (3). There are three support frames (3) in total, and they are distributed around the center point of the pressure-resistant layer (2).

3. The flexible fire-resistant cable with good bending resistance according to claim 1, characterized in that: The first connecting rod (14) and the second connecting rod (15) are connected in a cross manner, and a connector (30) is provided at the connection between the first connecting rod (14) and the second connecting rod (15).

4. The flexible fire-resistant cable with good bending resistance according to claim 1, characterized in that: The space between the core (4) and the support frame (3) is filled with fire-retardant material, and the interior of the fireproof layer (6) is filled with fire-retardant material.

5. A flexible fire-resistant cable with good bending resistance according to claim 1, characterized in that: The positions of the first conductive point (20) and the first electrical contact (19) are symmetrical to each other, and the first conductive point (20) is electrically connected to the electromagnet (13).

6. The flexible fire-resistant cable with good bending resistance according to claim 1, characterized in that: The movable slot (25), electrical contact two (26) and conductive point two (27) are symmetrically distributed with the midpoint of the movable block (23) as the reference. The conductive point two (27) is electrically connected to the electrical contact one (19).

7. A flexible fire-resistant cable with good bending resistance according to claim 1, characterized in that: The vertical cross-sections of the first deformation strip (17) and the second deformation strip (18) are both L-shaped. The first deformation strip (17) and the second deformation strip (18) are distributed vertically with the center point of the control layer (8) as the reference. The outer surface of the pressing block (21) is arc-shaped.

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