A new type of flame retardant cable

Abstract

The patent of the present invention belongs to the technical field of cable equipment, and specifically discloses a new type of flame-retardant cable, including at least two conductor cores, a first insulating layer and a flame-retardant outer sheath, and also includes a support assembly, the outer surface of each conductor core is wrapped with a first insulating layer, and the conductor cores are connected by a support assembly, the conductor core and the support assembly are both arranged in the flame-retardant outer sheath, when the flame-retardant outer sheath and the first insulating layer are burned or damaged, the adjacent conductor cores are driven to move back and forth by the support assembly to separate the conductor cores. When the present invention encounters a fire, the flame-retardant outer sheath is burned, and the support device loses the restraint of the flame-retardant outer sheath, and will return to the position before being compressed due to elastic deformation, that is, stretching, thereby pushing the adjacent conductor cores to move back and forth, so that the adjacent conductor cores are away from each other, so as to solve the problem of short circuit caused by contact between the conductor cores.

Description

Technical Field

[0001] The invention relates to the technical field of cable equipment, in particular to a novel flame-retardant cable. Background Art

[0002] Cables are widely used and closely related to people's work and life. Wires generally include conductor cores, insulation layers and flame-retardant outer sheaths from the inside to the outside. However, the insulation materials and sheath materials used in large quantities in wires are mostly flammable polymer materials. When used at home, they often burn due to their own heat during the transmission of electrical energy, or burn due to external fires. When the insulation layer and flame-retardant outer sheath are damaged, the adjacent conductor cores will be in direct contact and short-circuit, causing greater subsequent disasters. After the short-circuit, the circuit cannot be used normally and the related power equipment will be burned.

[0003] Based on this, how to avoid short circuit caused by contact between wire cores during a fire is a technical problem that technicians in this field currently need to solve. Summary of the invention

[0004] In view of the problems in the prior art, the object of the present invention is to provide a new type of flame retardant cable.

[0005] In order to achieve the above object, the technical solution of the present invention is:

[0006] A novel flame-retardant cable comprises at least two conductor cores, a first insulating layer and a flame-retardant outer sheath, and also comprises a supporting assembly. The outer surface of each conductor core is wrapped with the first insulating layer, and the conductor cores are connected by the supporting assembly. The conductor cores and the supporting assembly are both arranged in the flame-retardant outer sheath. When the flame-retardant outer sheath and the first insulating layer are burned or damaged, the adjacent conductor cores are driven to move back and forth by the supporting assembly to separate the conductor cores.

[0007] Furthermore, the support assembly includes a pair of connectors and a telescopic portion, the pair of connectors are connected via the telescopic portion, and the connectors are respectively connected to adjacent conductor cores.

[0008] Furthermore, the connecting piece is a half-embracing clamp.

[0009] Furthermore, the telescopic part is a telescopic spring.

[0010] Furthermore, the telescopic portion is a spring sheet, both ends of which are respectively connected to the connecting member, and a middle portion of the spring sheet is bent to one side to form a folded section.

[0011] Furthermore, the number of the spring pieces is at least one.

[0012] Furthermore, the inner surface of the half-enclosing clamp in contact with the conductor core is evenly distributed with protrusions or provided with knurling.

[0013] Furthermore, a second insulating layer is provided between the connecting piece and the conducting wire core to isolate the connecting piece from the conducting wire core.

[0014] Furthermore, the protrusions are configured as ceramic particles to form a second insulating layer, and the ceramic particles are embedded in the clamp.

[0015] Furthermore, the half-embracing clamp is provided with a hollow structure to achieve normal heat dissipation at the connection between the half-embracing clamp and the conductor core.

[0016] Compared with the prior art, the novel flame-retardant cable structure provided by the present invention is unique and easy to operate. By adding a supporting device between the adjacent conductor cores, the conductor cores are closely fitted together when the cable is made to compress the supporting device, thereby achieving the fitting of multiple conductor cores. After the cable is made, due to the wrapping of the flame-retardant outer sheath, the supporting device is in a compressed state. Due to the rebound elastic force of the supporting device, a thrust is given to the adjacent conductor cores to move back and forth, that is, a tendency of back and forth movement is guaranteed. When a fire occurs, the flame-retardant outer sheath is burned, and the supporting device loses the restraint of the flame-retardant outer sheath. It will recover to the position before being compressed due to elastic deformation, that is, stretch out, thereby pushing the adjacent conductor cores to move back and forth, and the adjacent conductor cores are moved away from each other, so as to solve the problem of short circuit caused by contact between the conductor cores. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Attached Figure 1 This is a structural schematic diagram of a new type of flame-retardant cable.

[0019] Attached Figure 2 This is a cross-sectional view of a new type of flame-retardant cable.

[0020] Attached Figure 3 For attachment Figure 2 An expanded view of the support components in a new type of flame-retardant cable.

[0021] In the figure: 1. flame retardant outer sheath, 2. first insulating layer, 3. conductor core, 4. telescopic part, 5. connector, 6. protrusion. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] like Figure 1 , 2 As shown in Figure 3, a new type of flame-retardant cable as a preferred embodiment of the present invention comprises at least two conductor cores 3, a first insulating layer 2 and a flame-retardant outer sheath 1, and also comprises a retractable support assembly, wherein the outer surface of each conductor core 3 is wrapped with the first insulating layer 2 for isolating the power supply and avoiding short circuit conduction, and the conductor cores 3 are connected through the support assembly, preferably, the connection between the support assembly and the conductor core 3 is a movable connection, specifically a snap-on connection, so as to facilitate the installation of the support assembly when making the cable, and the support assembly is evenly distributed along the length direction of the cable, and the spacing ensures that after being stretched through adjacent support assemblies, the two conductor cores 3 will not bend and contact under the action of gravity in the vertical direction, so as to achieve isolation and avoid short circuit, and the conductor core 3 and the support assembly are both arranged in the flame-retardant outer sheath 1, and when the flame-retardant outer sheath 1 and the first insulating layer 2 are burned or damaged, the support assembly loses the wrapping restriction of the flame-retardant outer sheath 1, and the adjacent conductor cores 3 are driven to move back and forth by the support assembly to separate the conductor cores 3 and avoid short circuit.

[0024] The new flame-retardant cable of the present invention is applied, by adding a supporting device between the adjacent conductor cores 3, and utilizing the conductor cores 3 to be closely fitted together in parallel when the cable is manufactured, the supporting device is compressed, thereby achieving the fitting of multiple conductor cores 3. After the cable is manufactured, due to the wrapping of the flame-retardant outer sheath 1, the supporting device is in a compressed state, and due to the rebound elastic force of the supporting device, a thrust is given to the adjacent conductor cores 3 to move backward, that is, a tendency of backward movement is guaranteed. When a fire occurs, the flame-retardant outer sheath 1 is burned, and the supporting device loses the restraint of the flame-retardant outer sheath 1, and will recover to the position before being compressed due to elastic deformation, that is, stretch out, thereby pushing the adjacent conductor cores 3 to move backward, and the adjacent conductor cores 3 are moved away from each other, so as to solve the problem of short circuit caused by contact of the conductor cores 3.

[0025] In the above embodiment, the supporting assembly includes a pair of connectors 5 and a telescopic portion 4, wherein the pair of connectors 5 are connected via the telescopic portion 4, and the connectors 5 are respectively connected to adjacent conductor cores 3. When a fire occurs, the flame-retardant outer sheath 1 and the first insulating layer 2 on the surface of the cable are burned or damaged, and the telescopic portion 4 is used to bounce two adjacent conductor cores 3 apart, thereby avoiding a short circuit and promoting combustion.

[0026] Preferably, the connector 5 is a half-enclosed clamp, that is, the connector 5 is set as a half-enclosed clamp to facilitate the clamping of the conductor core 3 into the connector 5 and achieve efficient installation.

[0027] In one embodiment, the telescopic portion 4 is a telescopic spring, that is, the two conductor cores 3 are pushed and pulled by elastic deformation of the telescopic spring.

[0028] In this embodiment, the telescopic portion 4 is a spring sheet, both ends of which are respectively connected to the connecting piece 5, and the middle portion of the spring sheet is bent to one side to form a folded section, that is, the spring sheet is heat-treated to maintain a fixed state and can undergo elastic deformation, that is, after the external restraint of the conductor core 3 is lost, the spring sheet can stretch and undergo elastic deformation to push the adjacent conductor cores 3 apart, thereby achieving the above-mentioned effect.

[0029] In the above embodiment, the number of the spring pieces is at least 1, and the specific number can be increased or decreased according to actual conditions.

[0030] It should be noted that the inner surface of the half-encircling clamp in contact with the conductor core 3 is evenly distributed with protrusions 6 or provided with knurling, which reduces the contact area between the conductor core 3 and the half-encircling clamp and facilitates heat dissipation.

[0031] In this embodiment, a second insulating layer is provided between the connector 5 and the conductor core 3 to isolate the connector 5 from the conductor core 3 and further prevent the two conductor cores 3 from being short-circuited through the connector 5 and the telescopic portion 4 .

[0032] Preferably, the protrusions 6 are ceramic particles, which are embedded in the half-enclosed clamp. The ceramic particles are insulated and serve as a second insulating layer, playing an insulating role.

[0033] Furthermore, the half-embracing clamp is provided with a hollow structure to achieve normal heat dissipation at the connection between the half-embracing clamp and the conductor core 3.

[0034] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0035] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0036] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A novel flame-retardant cable, comprising at least two conductor cores (3), a first insulating layer (2) and a flame-retardant outer sheath (1), characterized in that: It also includes a support assembly, wherein the outer surface of each conductor core (3) is wrapped with a first insulating layer (2), and the conductor cores (3) are connected via the support assembly, and the conductor cores (3) and the support assembly are both arranged in the flame-retardant outer sheath (1). When the flame-retardant outer sheath (1) and the first insulating layer (2) are burned or damaged, the adjacent conductor cores (3) are driven to move back and forth by the support assembly to separate the conductor cores (3) to avoid short circuit; the support assembly includes a pair of connectors (5) and a telescopic portion (4), wherein the pair of connectors (5) are connected via the telescopic portion (4), and the connectors (5) are respectively clamped with adjacent conductor cores (3); a second insulating layer is arranged between the connector (5) and the conductor core (3) to isolate the connector (5) from the conductor core (3); The connecting piece (5) is a super semicircular half-embracing clamp, the inner surface of the half-embracing clamp in contact with the conductor core (3) is evenly distributed with protrusions (6), the protrusions (6) are arranged as ceramic particles to form a second insulating layer, and the ceramic particles are embedded in the half-embracing clamp.

2. The novel flame-retardant cable according to claim 1 is characterized in that: The telescopic part (4) is a telescopic spring.

3. The novel flame-retardant cable according to claim 1 is characterized in that: The telescopic portion (4) is a spring sheet, the two ends of which are respectively connected to the connecting piece (5), and the middle of the spring sheet is bent to one side to form a folded section.

4. The novel flame-retardant cable according to claim 3 is characterized in that: The number of the shrapnel is at least one.

5. The novel flame-retardant cable according to claim 1 is characterized in that: The half-enclosed clamp is provided with a hollow structure to achieve normal heat dissipation at the connection between the half-enclosed clamp and the conductor core (3).

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