阅读说明：本技术 一种计算机用阻燃抗压扁电缆 (Flame-retardant and compression-resistant flat cable for computer ) 是由 李万松 于 2021-06-17 设计创作，主要内容包括：本发明公开了一种计算机用阻燃抗压扁电缆,属于电缆技术领域,包括线芯、绕包层、总屏蔽层、阻燃层及护套层；线芯的外侧套设有缓冲套,缓冲套包括上缓冲层和下缓冲层,上缓冲层和下缓冲层的截面均呈与线芯外表面相适配的弧形,上缓冲层和下缓冲层的端部之间留有间隙,且间隙处设有波形支撑条,波形支撑条呈波浪状并沿线芯长度方向延伸,波形支撑条与上缓冲层的端部之间形成一排上散热口,波形支撑条与下缓冲层的端部之间形成一排下散热口；相邻两个缓冲套之间连接有截面呈“x”形的连接缓冲层。本发明具有阻燃和优异的抗压性能,能实现对线芯的防火和高效抗压防护效果,且有利于电缆的散热。(The invention discloses a flame-retardant compression-resistant flat cable for a computer, which belongs to the technical field of cables and comprises a wire core, a wrapping layer, a total shielding layer, a flame-retardant layer and a sheath layer; the outer side of the wire core is sleeved with a buffer sleeve, the buffer sleeve comprises an upper buffer layer and a lower buffer layer, the cross sections of the upper buffer layer and the lower buffer layer are both arc-shaped and matched with the outer surface of the wire core, a gap is reserved between the end parts of the upper buffer layer and the lower buffer layer, a wave-shaped support bar is arranged at the gap, the wave-shaped support bar is wave-shaped and extends along the length direction of the wire core, a row of upper heat dissipation ports are formed between the wave-shaped support bar and the end part of the upper buffer layer, and a row of lower heat dissipation ports are formed between the wave-shaped support bar and the end part of the lower buffer layer; a connection buffer layer with an x-shaped section is connected between two adjacent buffer sleeves. The cable core has the advantages of flame retardance and excellent compression resistance, can realize the fireproof and efficient compression-resistant protection effects on the cable core, and is beneficial to heat dissipation of the cable.)

1. The flame-retardant compression-resistant flat cable for the computer comprises at least two wire cores (9) arranged at a cable core in parallel, wherein a wrapping layer (4) is coated on the outer side of the cable core, and a total shielding layer (3), a flame-retardant layer (2) and a sheath layer (1) are sequentially coated on the outer side of the wrapping layer (4); its characterized in that, every the outside of sinle silk (9) all is equipped with the cushion collar, the cushion collar is including last buffer layer (6) and lower buffer layer (10) that are located sinle silk (9) upper and lower part respectively, it all extends along sinle silk (9) length direction with lower buffer layer (10) to go up buffer layer (6), the cross-section of going up buffer layer (6) and lower buffer layer (10) all is the arc with sinle silk (9) surface looks adaptation, and goes up the tip one-to-one of buffer layer (6) and lower buffer layer (10) and set up in opposite directions, it leaves the clearance to go up between the tip of buffer layer (6) and lower buffer layer (10), and clearance department is equipped with wave form support bar (11), wave form and extend along sinle silk (9) length direction in wave form support bar (11) and last thermovent (12) of formation between the tip of last buffer layer (6), a row of lower heat dissipation openings (13) are formed between the corrugated support bars (11) and the end parts of the lower buffer layer (10);

all be connected with between per two adjacent cushion collars and follow connection buffer layer (7) that cable length direction extends, the cross-section of connecting buffer layer (7) is "x" shape, connect buffer layer (7) including four connecting strip (73) that extend to the equidirectional not by its middle part, two connecting strip (73) that are located the top are connected with two upper buffer layer (6) respectively, and two connecting strip (73) that are located the below are connected with two lower buffer layer (10) respectively.

2. The flat cable of fire-retardant resistance to compression for computer of claim 1, characterized in that, the cross-section of going up buffer layer (6) and lower buffer layer (10) all is semicircular in shape, and all leaves the clearance between the intrados of going up buffer layer (6) and lower buffer layer (10) and corresponding sinle silk (9), go up the middle part of buffer layer (6) and lower buffer layer (10) intrados and all inlay and be equipped with elastic support bar (8), elastic support bar (8) length is followed sinle silk (9) length direction and is extended, and sinle silk (9) top and bottom contact with elastic support bar (8) of corresponding side respectively.

3. The flame-retardant and compression-resistant flat cable for the computer as claimed in claim 1, wherein the outer ends of the two upper connecting strips (73) are both arc-shaped surfaces (71) matched with the outer arc surface of the upper buffer layer (6), and the outer ends of the two lower connecting strips (73) are both arc-shaped surfaces (71) matched with the outer arc surface of the lower buffer layer (10).

4. The flame-retardant and compression-resistant flat cable for the computer as claimed in claim 1, wherein the filling material (5) is filled between the buffer sleeve, the outer side of the connection buffer layer (7) and the wrapping layer (4).

5. The flame-retardant and compression-resistant flat cable for the computer as claimed in claim 1, wherein a reinforcing rope (17) parallel to the wire core (9) is arranged in the middle of each connection buffer layer (7) in a penetrating manner.

6. The flame-retardant and pressure-resistant flat cable for the computer according to any one of claims 1 to 5, wherein side notches (72) are formed in the middle portions of the left side and the right side of the connection buffer layer (7), arc-shaped support bars (14) which are arc-shaped in cross section and extend along the length direction of the cable are arranged in each of the two side notches (72), the middle portions of the arc-shaped support bars (14) protrude towards the outer side of the buffer layer (7), and the two ends of each arc-shaped support bar (14) are respectively connected with the two connection bars (73) on the corresponding side.

7. The flat cable of fire-retardant resistance to compression of claim 6, characterized in that, the arc support bar (14) aligns with the corrugated support bar (11) horizontally, be fixed with a row of last stopper (15) that aligns with last thermovent (12) monomer one by one on the extrados of arc support bar (14), be fixed with a row of lower stopper (16) that aligns with lower thermovent (13) monomer one by one on the extrados of arc support bar (14).

Technical Field

The invention relates to the technical field of cables, in particular to a flame-retardant compression-resistant flat cable for a computer.

Background

The computer cable is mainly used for computer power supply and power transmission and distribution lines with rated voltage of 1KV and below for transmitting electric energy, and has wide application in many industries. With the wide application of computer technology in various industries, the demand of cables for computers is increasing, and the requirements are increasing. However, when the existing cable for the computer is subjected to external force and fire, the internal conductor is easily damaged, signal transmission is blocked, and popularization and use of the computer technology are affected. The above problems need to be solved.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to provide a flame-retardant and crush-resistant cable with flame-retardant and crush-resistant properties for a computer, so as to solve the problems in the prior art.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

the flame-retardant compression-resistant flat cable for the computer comprises at least two wire cores arranged at a cable core in parallel, wherein a wrapping layer is coated on the outer side of the cable core, and a total shielding layer, a flame-retardant layer and a sheath layer are sequentially coated on the outer side of the wrapping layer; every the outside of sinle silk all is overlapped and is equipped with the cushion collar, the cushion collar includes the last buffer layer and the lower buffer layer that are located sinle silk upper and lower part respectively, go up the buffer layer and all extend along sinle silk length direction with lower buffer layer, the cross-section of going up buffer layer and lower buffer layer all is the arc with sinle silk surface looks adaptation, and the tip one-to-one of going up buffer layer and lower buffer layer sets up in opposite directions, leave the clearance between the tip of going up buffer layer and lower buffer layer, and the clearance department is equipped with the wave form support bar, the wave form support bar is the wavy and extends along sinle silk length direction, form one row of upper heat dissipation mouth between the tip of wave form support bar and last buffer layer, form one row of lower heat dissipation mouth between the tip of wave form support bar and lower buffer layer;

all be connected with the connection buffer layer that extends along cable length direction between every two adjacent cushion collars, the cross-section of connecting the buffer layer is "x" shape, connect the buffer layer and include four connecting strips that extend to the equidirectional not by its middle part, two connecting strips that are located the top are connected with two upper buffer layers respectively, and two connecting strips that are located the below are connected with two lower buffer layers respectively.

Further, go up the buffer layer and all be semicircular in shape in the cross-section of buffer layer down, and go up the buffer layer and all leave the clearance between the intrados of buffer layer and corresponding sinle silk down, go up the buffer layer and all inlay with the middle part of buffer layer intrados down and be equipped with the elastic support strip, the length of elastic support strip extends along sinle silk length direction, and the top of sinle silk and the elastic support strip contact of bottom respectively with corresponding side. After the elastic support bar is arranged, the wire core can be limited in the middle of the inner side of the buffer sleeve, a gap is reserved between the wire core and the inner side face of the buffer sleeve, heat generated on the peripheral side of the wire core can be led to the heat dissipation port through the gap quickly, and the heat dissipation function of the wire core is promoted.

Furthermore, the outer ends of the two connecting strips located above are arc-shaped surfaces matched with the outer arc surface of the upper buffer layer, and the outer ends of the two connecting strips located below are arc-shaped surfaces matched with the outer arc surface of the lower buffer layer. The connection contact surface of the connecting strip, the upper buffer layer and the lower buffer layer can be increased through the arrangement of the arc-shaped surface, so that the connection stability of the connection buffer layer, the upper buffer layer and the lower buffer layer can be enhanced.

Furthermore, filling materials are filled between the buffer sleeve, the outer side of the connecting buffer layer and the wrapping layer. The filling material can adopt flame retardant materials and/or other functional materials, so that the flame retardant performance and/or other performances of the cable can be improved.

Optimally, each reinforcing rope parallel to the wire core is arranged in the middle of each connecting buffer layer in a penetrating mode. The reinforcing rope can adopt nylon materials, and tensile strength and compressive strength of the cable can be enhanced.

As the improvement to above-mentioned scheme, the middle part of connecting the buffer layer left and right sides all is formed with the side breach, two all be equipped with the arc support bar that the cross-section is the arc and extends along cable length direction in the side breach, the middle part of arc support bar is to connecting the buffer layer outside protrusion, and the both ends of arc support bar are connected with two connecting strips of corresponding side respectively. After setting up the arc support bar, when connecting the buffer layer and receiving the pressure of upper and lower direction, two connecting strips that are located the top and two connecting strips that are located the below move in opposite directions, can press the arc support bar to bend, make its central angle grow that corresponds, and the camber of arc support bar is big more its reverse resistance that produces also big more to can strengthen the buffering effect of buffer layer, be favorable to promoting the protective effect to the sinle silk.

As a further improvement to the above scheme, the arc-shaped support bars are horizontally aligned with the corrugated support bars, a row of upper limiting blocks aligned with the upper heat dissipation port monomers one by one are fixed on the outer arc surfaces of the arc-shaped support bars, and a row of lower limiting blocks aligned with the lower heat dissipation port monomers one by one are fixed on the outer arc surfaces of the arc-shaped support bars. In an initial state, the upper limiting block and the upper limiting block are both positioned at the outer sides of the corrugated supporting bars, so that the influence on the heat dissipation performance of the wire cores through the heat dissipation openings can be avoided; when the arc support bar is deformed by bending, the outer arc side of the arc support bar protrudes to the outside, the upper limiting block and the lower limiting block can be driven to move outwards, the upper limiting block can be inserted into the upper radiating hole, the lower limiting block is inserted into the lower radiating hole, the supporting resistance effect of the waveform support bar on the upper buffer layer and the lower buffer layer is enhanced, the buffering effect of the buffer sleeve can be enhanced, and the protection effect on the wire core is promoted.

3. Advantageous effects

(1) According to the invention, the upper buffer layer and the lower buffer layer with arc-shaped sections are arranged, so that the upper buffer layer and the lower buffer layer form the buffer sleeve sleeved outside the wire core, and when the flat cable is pressed, the upper buffer layer and the lower buffer layer are close to each other through elastic deformation of the upper buffer layer and the lower buffer layer, so that the compression resistance effect can be initially realized; in addition, the wavy support bars extending along the length direction of the cable are arranged between the upper buffer layer and the lower buffer layer, the upper buffer layer and the lower buffer layer are close to each other and can transmit pressure to the wavy support bars, the wavy support bars can guide partial pressure to the length direction of the wavy support bars, pressure applied to the cable cores is reduced, and the elastic deformation of the wavy support bars can further play a role in buffering.

(2) The connecting buffer layer is connected between two adjacent buffer sleeves, the cross section of the connecting buffer layer is in an x shape, when the connecting buffer layer is pressed, two connecting strips positioned above and two connecting strips positioned below move oppositely, and the connecting buffer layer can further play a role in buffering through elastic deformation of the connecting buffer layer; moreover, the elastic deformation of the arc-shaped supporting strips can enhance the buffering effect of the buffer layer through the arrangement of the arc-shaped supporting strips, the upper limiting block and the lower limiting block; when the arc support bar is bent and deformed, the outer arc side of the arc support bar protrudes outwards, the upper limiting block and the lower limiting block can be driven to move outwards and be inserted into the heat dissipation hole, the supporting resistance effect of the waveform support bar on the upper buffer layer and the lower buffer layer can be enhanced, and the buffering effect of the buffer sleeve can be enhanced.

(3) According to the cable core, the corrugated support bars are arranged, so that a row of upper heat dissipation openings are formed between the corrugated support bars and the end parts of the upper buffer layer, a row of lower heat dissipation openings are formed between the corrugated support bars and the end parts of the lower buffer layer, and heat generated by the cable core can quickly lead to the heat dissipation openings and is discharged from the upper heat dissipation openings and the lower heat dissipation openings, so that the cable core is beneficial to heat dissipation.

(4) The cable is provided with the flame-retardant layer, and the flame-retardant layer can form a protective layer outside the cable core when a fire disaster happens so as to isolate a fire source and endow the cable with better fireproof performance.

In conclusion, the cable core has the advantages of flame retardance and excellent compression resistance, can realize the fireproof and efficient compression-resistant protection effects on the cable core, and is beneficial to heat dissipation of the cable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view showing the structure of the present invention in example 1;

FIG. 2 is an enlarged view of the structure of the area A in FIG. 1;

fig. 3 is an enlarged side view of the corrugated support bar 11;

FIG. 4 is an enlarged view of the cross-sectional structure of the connection buffer layer 7 in example 1;

FIG. 5 is a schematic cross-sectional view showing the structure of the present invention in example 2;

FIG. 6 is an enlarged view of the cross-sectional structure of the connection buffer layer 7 in example 2;

FIG. 7 is a schematic cross-sectional view showing the structure of the present invention in example 3;

FIG. 8 is an enlarged view of the cross-sectional structure of the connection buffer layer 7 in example 3;

fig. 9 is an enlarged side view of the arc support bar 14.

Reference numerals: 1. a sheath layer; 2. a flame retardant layer; 3. a total shielding layer; 4. wrapping a covering; 5. a filler; 6. an upper buffer layer; 7. connecting the buffer layer; 71. an arc-shaped surface; 72. a side notch; 73. a connecting strip; 8. an elastic support bar; 9. a wire core; 10. a lower buffer layer; 11. a wave-shaped support strip; 12. an upper heat dissipation port; 13. a lower heat dissipation port; 14. the arc-shaped supporting strips; 15. an upper limit block; 16. a lower limiting block; 17. and reinforcing the ropes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a second feature of an inlet feature may include the inlet and the second feature being in direct contact, or may include the inlet and the second feature not being in direct contact but being in contact with another feature therebetween. Also, the terms "over," "above," and "above" the second feature include the inlet feature being directly above and obliquely above the second feature, or simply indicating that the inlet feature is at a higher level than the second feature. The terms "under", "below" and "beneath" of an inlet feature encompass the inlet feature being directly under and obliquely below the second feature, or simply meaning that the inlet feature is less level than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Example 1

The flame-retardant compression-resistant flat cable for the computer shown in fig. 1 comprises at least two wire cores 9 (four wire cores 9 are shown in the figure) arranged at a cable core in parallel, wherein a wrapping layer 4 is coated on the outer side of the cable core, and a total shielding layer 3, a flame-retardant layer 2 and a sheath layer 1 are sequentially coated on the outer side of the wrapping layer 4; the cable core 9 comprises a cable core conductor, an insulating layer and a metal shielding layer which are sequentially arranged from inside to outside, the wrapping layer 4 is a water-blocking wrapping layer, the total shielding layer 3 and the flame-retardant layer 2 are made of ceramic silicon rubber.

The outer side of each wire core 9 is sleeved with a buffer sleeve, the buffer sleeve comprises an upper buffer layer 6 and a lower buffer layer 10 which are respectively positioned at the upper part and the lower part of the wire core 9, the upper buffer layer 6 and the lower buffer layer 10 both extend along the length direction of the line core 9, the sections of the upper buffer layer 6 and the lower buffer layer 10 are both arc-shaped and matched with the outer surface of the line core 9, and the end portions of the upper and lower buffer layers 6 and 10 are arranged in one-to-one correspondence and in opposite directions, as shown in fig. 2 and 3, a gap is left between the end portions of the upper and lower buffer layers 6 and 10, and the gap is provided with a wave-shaped supporting strip 11, the wave-shaped supporting strip 11 is wave-shaped and extends along the length direction of the line core 9, a row of upper heat dissipation ports 12 are formed between the corrugated support bars 11 and the end parts of the upper buffer layer 6, and a row of lower heat dissipation ports 13 are formed between the corrugated support bars 11 and the end parts of the lower buffer layer 10; the upper side and the lower side of the corrugated support bar 11 are provided with connecting points at equal intervals along the length direction and are connected with the upper buffer layer 6 and the lower buffer layer 10; go up buffer layer 6 and buffer layer 10's cross-section all semicircular in shape down, and go up buffer layer 6 and all leave the clearance between buffer layer 10's intrados and corresponding sinle silk 9 down, it all inlays and is equipped with elastic support bar 8 with the middle part of buffer layer 10 intrados down to go up buffer layer 6, elastic support bar 8's length extends along sinle silk 9 length direction, and sinle silk 9's top and bottom contact with elastic support bar 8 of corresponding side respectively. Set up elastic support bar 8 back, can inject sinle silk 9 in the inboard middle part of cushion collar to make and leave the clearance between sinle silk 9 and the inside side of cushion collar, make the heat that sinle silk 9 week side produced can be fast access to the thermovent through the clearance, be favorable to promoting the heat dissipation function of sinle silk 9.

A connecting buffer layer 7 extending along the length direction of the cable is connected between every two adjacent buffer sleeves, as shown in fig. 4, the cross section of the connecting buffer layer 7 is in an x shape, the connecting buffer layer 7 comprises four connecting strips 73 extending from the middle part to different directions, the two connecting strips 73 positioned above are respectively connected with the two upper buffer layers 6, and the two connecting strips 73 positioned below are respectively connected with the two lower buffer layers 10; the outer ends of the two connecting strips 73 positioned above are arc-shaped surfaces 71 matched with the outer arc surface of the upper buffer layer 6, and the outer ends of the two connecting strips 73 positioned below are arc-shaped surfaces 71 matched with the outer arc surface of the lower buffer layer 10. The connection contact surface of the connecting strip 73 with the upper buffer layer 6 and the lower buffer layer 10 can be increased through the arrangement of the arc-shaped surface 71, so that the connection stability of the connection buffer layer 7 with the upper buffer layer 6 and the lower buffer layer 10 can be enhanced.

The upper buffer layer 6, the lower buffer layer 10, the wave-shaped supporting strips 11 and the connecting buffer layer 7 are all made of elastic rubber, and the filling materials 5 are filled between the buffer sleeve, the outer side of the connecting buffer layer 7 and the wrapping layer 4. The filling material 5 can adopt flame retardant materials and/or other functional materials, so that the flame retardant performance and/or other performances of the cable can be improved.

Example 2

The present embodiment is different from embodiment 1 in that:

in this embodiment, as shown in fig. 5 and fig. 6, side notches 72 are formed in the middle portions of the left and right sides of the connection buffer layer 7, two arc-shaped support bars 14 having arc-shaped cross sections and extending along the length direction of the cable are disposed in the side notches 72, the middle portions of the arc-shaped support bars 14 protrude to the outer side of the connection buffer layer 7, and two ends of each arc-shaped support bar 14 are connected to two connection bars 73 on the corresponding side. Set up arc support bar 14 back, when connecting buffer layer 7 and receiving the pressure of upper and lower direction, two connecting strips 73 that are located the top and two connecting strips 73 that are located the below move in opposite directions, can press arc support bar 14 curved, make its central angle grow that corresponds, and arc support bar 14's the big reverse resistance of its production of camber is also big more to can strengthen the buffering effect of buffer layer, be favorable to promoting the protective effect to sinle silk 9.

Otherwise, the same procedure as in example 1 was repeated.

Example 3

The present embodiment is different from embodiment 2 in that:

in this embodiment, as shown in fig. 8 and 9, the arc-shaped supporting strips 14 are horizontally aligned with the corrugated supporting strips 11, a row of upper limiting blocks 15 aligned with the upper heat dissipating openings 12 are fixed on the outer arc surfaces of the arc-shaped supporting strips 14, and a row of lower limiting blocks 16 aligned with the lower heat dissipating openings 13 are fixed on the outer arc surfaces of the arc-shaped supporting strips 14. In an initial state, the upper limiting block 15 and the upper limiting block 15 are both positioned at the outer side of the corrugated supporting bar 11, so that the influence on the heat dissipation performance of the wire core 9 through the heat dissipation port can be avoided; when the arc support bar 14 is deformed by bending, the outer arc side of the arc support bar protrudes to the outside, the upper limiting block 15 and the lower limiting block 16 can be driven to move outwards, the upper limiting block 15 can be inserted into the upper heat dissipation port 12, the lower limiting block 16 is inserted into the lower heat dissipation port 13, the supporting resistance effect of the waveform support bar 11 on the upper buffer layer 6 and the lower buffer layer 10 is enhanced, the buffering effect of the buffer sleeve can be enhanced, and the protection effect on the wire core 9 is promoted.

The arc-shaped supporting strips 14, the upper limiting blocks 15 and the lower limiting blocks 16 are all made of elastic rubber.

In this embodiment, as shown in fig. 7, a reinforcing cord 17 is inserted through the middle of each connection buffer layer 7 and is parallel to the wire core 9. The reinforcing rope 17 is made of nylon materials, and tensile strength and compressive strength of the cable can be enhanced.

The rest is the same as example 2.

The flame-retardant compression-resistant flat cable for the computer has the following specific action principle:

under initial condition, go up buffer layer 6, lower buffer layer 10, wave form support bar 11, connect buffer layer 7 and arc support bar 14 and all be in the diastole state, go up thermovent 12 and thermovent 13 down great, the heat that sinle silk 9 produced leads to the thermovent through the clearance between sinle silk 9 and the buffer sleeve inside face is very fast to discharge from last thermovent 12 and lower thermovent 13, be favorable to the heat dissipation of cable.

When the cable is pressed (mainly referring to the pressure corresponding to the upper end and the lower end of the cable), the upper buffer layer 6 and the lower buffer layer 10 can be close to each other by the opposite pressure firstly, and the buffer effect can be achieved preliminarily; then the pressure is transmitted to the wavy support strip 11, the wavy support strip 11 can guide part of the pressure to the length direction of the wavy support strip, the pressure applied to the wire core 9 is reduced, and the elastic deformation of the wavy support strip 11 can further play a role in buffering; meanwhile, the connection buffer layer 7 is under the action of pressure, the two connecting strips 73 positioned above and the two connecting strips 73 positioned below move oppositely, and the buffer effect can be further exerted through the elastic deformation of the connection buffer layer 7; moreover, for the cable provided with the arc-shaped supporting strip 14, the upper limiting block 15 and the lower limiting block 16, the arc-shaped supporting strip 14 is bent under the action of pressure, and the larger the bending degree of the arc-shaped supporting strip 14 is, the larger the generated reverse resistance force is, so that the buffering effect of the buffer layer can be enhanced; when the arc support bars 14 are bent and deformed, the outer arc sides of the arc support bars protrude outwards, the upper limiting blocks 15 and the lower limiting blocks 16 can be driven to move outwards, the upper limiting blocks 15 can be inserted into the upper heat radiating holes 12, the lower limiting blocks 16 are inserted into the lower heat radiating holes 13, the supporting resistance effect of the corrugated support bars 11 on the upper buffer layer 6 and the lower buffer layer 10 is enhanced, and therefore the buffering effect of the buffer sleeve can be enhanced. The cable core has excellent compression resistance and can realize the high-efficiency compression-resistant protection effect on the cable core 9.

When a fire disaster happens, the flame-retardant layer 2 can form a protective layer outside the cable core to isolate a fire source, so that the cable has better fireproof performance.

According to the invention, the cable core has the advantages of flame retardance, excellent compression resistance, capability of realizing fireproof and efficient compression resistance protection effects on the cable core, and contribution to heat dissipation of the cable.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.