CN111370177A

CN111370177A - Wire and pencil

Info

Publication number: CN111370177A
Application number: CN202010309576.1A
Authority: CN
Inventors: 张少田; 刘中奎; 何新东; 张福龙; 王梓旭; 任志鹏; 周子健; 杨鑫煜
Original assignee: Hengtong Optic Electric Co Ltd; Shenyang Hengtong Optical Communication Co Ltd
Current assignee: Hengtong Optic Electric Co Ltd; Shenyang Hengtong Optical Communication Co Ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-07-03

Abstract

The application provides a wire and pencil relates to cable manufacturing technical field. The lead comprises a conductor, and an insulating layer, a fire-resistant layer and a fire-resistant layer which can expand when heated, which are sequentially coated on the outer side of the conductor from inside to outside. The wire is equipped with the fire-resistant coating that can expand by heating, and when the wire met conflagration (inside is caught fire or outside naked light), when reacing certain temperature, the next wire fire-resistant coating that is around can be volume expansion immediately and form the carbon layer of protection foam to keep apart the fire source, play the effect of protection.

Description

Wire and pencil

Technical Field

The application relates to the technical field of cable manufacturing, in particular to a wire and a wire harness.

Background

At present, the materials used by the existing conducting wire are usually made of insulating materials such as copper wires and PE, and damage to the internal wiring harness due to external forces such as friction vibration is prevented. Whether a single wire or a plug is adopted, the overall fireproof and flame-retardant performance is poor.

Disclosure of Invention

The embodiment of the application provides a wire and a wire harness, so that the problem that the fireproof and flame-retardant performance of the existing wire harness is poor is solved.

In a first aspect, embodiments of the present application provide a lead including a conductor, and an insulating layer, a fire-resistant layer, and a heat-expandable fire-resistant layer that are sequentially wrapped around an outer side of the conductor from inside to outside.

Among the above-mentioned technical scheme, the wire is equipped with the expandable by heating flame retardant coating, and when the wire met conflagration (inside is caught fire or outside naked light), when reacing the certain temperature, the wire flame retardant coating next on every side can volume expansion immediately form the carbon layer of protection foam to keep apart the fire source, play the effect of protection.

In addition, the lead of the embodiment of the first aspect of the present application has the following additional technical features:

in some embodiments of the first aspect of the present application, the refractory layer includes a first sheath layer, a ceramic layer, and a second sheath layer, which are sequentially coated on the outer side of the insulating layer from inside to outside.

Among the above-mentioned technical scheme, mainly play the ceramic layer of fire-resistant thermal-insulated effect in the wire, the ceramic layer can take place ceramic reaction after meetting the high temperature, generate one deck sclerosis layer, thereby play fire-resistant thermal-insulated effect, but the ceramic layer often appears the tortoise crackle in the sclerosis back surface, lead to the fragmentation of whole ceramic layer structure, consequently be equipped with first sheath and second sheath inside and outside the ceramic layer, the ceramic layer spalling that can avoid producing the tortoise crackle, make the ceramic layer last, play fire-resistant thermal-insulated effect better, and can make the wire guarantee certain mechanical properties under high temperature.

In some embodiments of the first aspect of the present application, the material of the first sheath comprises carbon fibers; and/or the material of the second sheath comprises carbon fibers.

Among the above-mentioned technical scheme, the material of first protective layer and/or second protective layer includes the carbon fiber, uses the carbon fiber layer protection in the inside and outside both sides of ceramic layer, and the carbon fiber layer has super high temperature resistance, is applied to fire blanket and fire control material usually, can guarantee certain mechanical properties under high temperature to itself is incombustible material, can protect it after taking place the conflagration emergence chap as inside ceramic layer, plays and lasts fire-resistant thermal-insulated effect.

In some embodiments of the first aspect of the present application, the material of the ceramic layer comprises a cerammed silicone rubber.

Among the above-mentioned technical scheme, the material of ceramic layer includes ceramic rubber, and ceramic silicon rubber uses in fireproof cable usually, because ceramic silicon rubber can take place ceramic reaction after meetting high temperature, produces one deck sclerosis layer to better playing fire-resistant thermal-insulated effect, and making the wire still have better mechanical properties, ceramic silicon rubber still makes the wire have certain compliance, the bending of being convenient for.

In some embodiments of the first aspect of the present application, the material of the fire-blocking layer comprises an intumescent fire-blocking coating.

In the technical scheme, the intumescent coating is usually applied to a flame-retardant paint material, the intumescent fire-retardant coating can expand to generate a protective carbon layer when a fire disaster occurs, so that the fire source is isolated, various colors can be fused by adopting the intumescent fire-retardant coating, and different colors can be used for distinguishing different wires and later maintenance.

In a second aspect, embodiments of the present application provide a wire harness including the lead provided in the first aspect. At least one end of each wire is provided with a plug.

Among the above-mentioned technical scheme, the wire of this pencil has the expanded flame retardant coating that is heated, especially when the pencil includes a plurality of wires, when outside or the inside single wire of pencil when taking place the conflagration, reach the outer layer volume expansion immediately of the wire next around and form the carbon layer of protection foam behind the uniform temperature to keep apart the burning things which may cause a fire disaster, play the effect of protection.

In some embodiments of the second aspect of the present application, the plug includes a housing and a terminal connected to the conductor; the inside formation accommodation space of shell, the one end of conductor extends to in the accommodation space, and the one end of terminal extends to in the accommodation space and is connected with the conductor.

Among the above-mentioned technical scheme, conductor and terminal hookup location are located the accommodation space of casing, can improve the security of pencil to can play the guard action to conductor and terminal hookup location, guarantee the normal use of pencil.

In some embodiments of the second aspect of the present application, the material of the housing comprises a ceramic.

Among the above-mentioned technical scheme, the shell adopts ceramic material, can improve the wearability, the fire prevention fire resistance and the mechanical strength of plug, reduces the possibility of circuit short circuit, reduces the emergence of incident.

In some embodiments of the second aspect of the present application, the receiving space is filled with a filling layer.

According to the technical scheme, the filling layer is filled in the accommodating space, so that the safety and reliability of the connection part of the conductor and the terminal can be guaranteed.

In some embodiments of the second aspect of the present application, the material of the fill layer comprises magnesium oxide.

Among the above-mentioned technical scheme, pack the magnesium oxide in accommodation space, not only can guarantee the safe and reliable of the junction of conductor and terminal, the magnesium oxide still has certain heat resistance, can further improve the fire prevention heat resistance of plug.

In some embodiments of the second aspect of the present application, two ends of each wire are provided with a plug, the plug at one end of the wire is a male plug, and the plug at the other end of the wire is a female plug.

Among the above-mentioned technical scheme, the one end of wire is public plug, and the other end is female plug for this pencil can satisfy more use scenes, and the range of application is wider.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a conductive line provided in an embodiment of the first aspect of the present application;

FIG. 2 is a schematic diagram illustrating a first perspective view of a wiring harness provided in an embodiment of a second aspect of the present application;

FIG. 3 is a schematic diagram illustrating a second perspective view of a wiring harness provided in an embodiment of a second aspect of the present application;

FIG. 4 is a schematic structural diagram of a first wiring harness according to another embodiment of the second aspect of the present application;

fig. 5 is a schematic structural diagram of a second wiring harness according to another embodiment of the second aspect of the present application.

Icon: 100-wire; 10-a conductor; 20-an insulating layer; 30-a refractory layer; 31-a first protective layer; 32-a ceramic layer; 33-a second protective layer; 40-a fire barrier layer; 1000-wire harness; 200-plug; 210-a housing; 211-an accommodation space; 212-a jack; 220-a terminal; 230-filling layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Examples

As shown in fig. 1, the embodiment of the first aspect of the present application provides a lead 100, and the lead 100 includes a conductor 10, and an insulating layer 20, a fire-resistant layer 30 and a heat-expandable fire-resistant layer 40 which are sequentially coated on the outer side of the conductor 10 from inside to outside. The wire 100 is provided with a fire-proof layer 40 which can expand by heating, when the wire 100 encounters fire (internal fire or external open fire), the fire-proof layer 40 of the adjacent wire 100 immediately expands in volume to form a carbon layer for protecting foam after reaching a certain temperature, thereby isolating the fire source and playing a role of protection.

In this embodiment, the material of the fire-blocking layer 40 includes an intumescent fire-blocking coating. The intumescent coating is usually applied to a flame-retardant paint material, the intumescent fire-retardant coating can expand to generate a protective carbon layer when a fire breaks out, so that a fire source is isolated, various colors can be fused by adopting the intumescent fire-retardant coating, different colors can be used for distinguishing in the intumescent fire-retardant coating in order to distinguish different wires 100 and later maintenance, for example, different colors can be added in the intumescent fire-retardant coating of each wire 100 in places with dense circuits, so that the purposes and connected equipment of each wire 100 can be distinguished conveniently, and later maintenance and troubleshooting can be performed. In addition, the intumescent coating is coated on the outermost layer of the wire 100, so that the cross-sectional area of the wire 100 can be reduced while the fireproof and heat-resistant performance of the wire 100 is ensured.

The insulation layer 20 is generally made of PE insulation rubber, and the conductor 10 is generally made of a cylinder as a material and plays a role in data or energy transmission. The insulating layer 20 is tightly attached to the outer side of the conductor 10, and plays a role of insulating and isolating, so that the safety performance of data or energy transmission can be ensured. In other embodiments, other insulating materials may be used for the insulating layer 20.

Generally, the wire 100 is provided with the ceramic layer 32 to enhance the fireproof performance and the heat resistance of the wire 100, but the ceramic layer 32 undergoes a ceramization reaction after encountering high temperature to generate a hardened layer, thereby playing a role of fire resistance and heat insulation, the hardened layer has better fire resistance and fire resistance, but the ceramic layer 32 often cracks on the hardened surface, possibly resulting in the cracking of the whole ceramic layer 32 structure, and the generated gap of the cracked ceramic layer 32 is larger and larger along with the use of the wire 100, so that the fire resistance and heat insulation performance of the ceramic layer 32 is greatly reduced.

Therefore, in this embodiment, the inner side and the outer side of the ceramic layer 32 are respectively provided with the first protective layer 31 and the second protective layer, the first protective layer 31 covers the outer side of the insulating layer 20, the ceramic layer 32 covers the outer side of the first protective layer 31, and the second protective layer 33 covers the outer side of the ceramic layer 32, that is, the first protective layer 31 and the second protective layer 33 are arranged inside and outside the ceramic layer 32, so that the ceramic layer 32 with cracks can be prevented from being spalled, the ceramic layer 32 can be sustained and can better play a role in fire resistance and heat insulation, and the lead 100 can ensure certain mechanical properties at high temperature.

Optionally, in the present embodiment, the material of the first sheath 31 and the material of the second sheath 33 both include carbon fiber. The carbon fiber layer has ultrahigh high-temperature resistance, is usually applied to fire blankets and fire-fighting materials, can ensure certain mechanical property at high temperature, is a non-combustible material, takes cloth made of the carbon fiber material as the first protective layer 31 and the second protective layer 33, can protect the ceramic layer 32 after the ceramic layer 32 is cracked due to fire, and plays a role in continuous fire resistance and heat insulation.

In other embodiments, the material of one of the first covering layer 31 and the second covering layer 33 may include carbon fiber, that is, only the material of the first covering layer 31 includes carbon fiber, and the material of the second covering layer 33 includes other materials with better flame retardant and heat resistant properties besides carbon fiber; or only the material of the second covering layer 33 includes carbon fiber, and the material of the first covering layer 31 includes other materials with better flame retardant and heat resistance properties besides carbon fiber.

Further, the material of the ceramic layer 32 includes ceramic silicone rubber. The ceramic silicon rubber is usually used in a fireproof cable, and can generate a ceramic reaction after encountering high temperature to generate a hardened layer, so that the fireproof and heat-insulating effects are better achieved, the wire 100 also has better mechanical properties, and the ceramic silicon rubber also enables the wire 100 to have certain flexibility and be convenient to bend.

In other embodiments, other materials may be used for the ceramic layer 32, such as common ceramics or other materials that are ceramized for the ceramic layer 32.

As shown in fig. 2 and fig. 3, a wire harness 1000 is provided in an embodiment of the second aspect of the present application, and the wire harness 1000 includes the lead 100 provided in the embodiment of the first aspect. Each conductor 100 is provided with a plug 200 at least one end. The wire 100 of the wire harness 1000 has the heat expandable fireproof layer 40, and particularly when the wire harness 1000 comprises a plurality of wires 100, when a fire breaks out on the outside or on a single wire 100 inside the wire harness 1000, the outer layer of the adjacent wires 100 immediately expands in volume to form a carbon layer for protecting foam after reaching a certain temperature, so that a fire source is isolated, and the protection effect is achieved.

In the present embodiment, the plug 200 includes a housing 210 and a terminal 220 connected to the conductor 10; the inside of the housing 210 forms an accommodation space 211, one end of the conductor 10 extends into the accommodation space 211, and one end of the terminal 220 extends into the accommodation space 211 and is connected to the conductor 10. The housing 210 is provided with a receptacle 212, and the receptacle 212 communicates with the receiving space 211. The connecting position of the conductor 10 and the terminal 220 is located in the accommodating space 211 of the housing, so that the safety of the wire harness 1000 can be improved, the connecting position of the conductor 10 and the terminal 220 can be protected, and the normal use of the wire harness 1000 is ensured.

In the present embodiment, the wire harness 1000 includes a plurality of wires 100, and both ends of each wire 100 are provided with plugs 200. The plug 200 at one end of the conductor 100 is a male plug and the plug 200 at the other end of the conductor 100 is a female plug. One end of the wire 100 is a male plug, and the other end is a female plug, so that the wire harness 1000 can meet more use scenes, and the application range is wider.

One end of the terminal 220 of the male plug extends into the accommodating space 211 of the housing 210 and is connected with the conductor 10, the other end of the terminal of the male plug extends out of the housing 210 from the jack 212, and after the male plug is matched with the female plug on other equipment, the terminal 220 of the male plug can be electrically connected with the terminal of the female plug on other equipment. One end of the terminal 220 of the female plug extends into the accommodating space 211 of the housing 210 and is connected with the conductor 10, the other end of the terminal 220 of the female plug is also located in the accommodating space 211 of the housing 210, the jack 212 on the housing 210 of the female plug can be matched with the jack 212 of the male plug on other equipment, one end of the terminal 220 of the female plug, which is far away from the conductor 10, is aligned with the jack 212, and after the male plug of other equipment is matched with the female plug of the wire harness 1000, the terminal 220 of the female plug can be electrically connected with the terminal 220 of the male plug on other equipment.

In other embodiments, the wire harness 1000 may have other forms, such as a male plug disposed on each end of the wires 100 as shown in fig. 4, or a female plug disposed on each end of each wire 100 as shown in fig. 5. Of course, in the case that there are a plurality of wires 100 in the wire harness 1000, it is also possible that one end of the wire harness 1000 has a part of the wires 100 provided with the common plug 200 and another part of the wires 100 provided with the female plug. In addition, in some embodiments, only one end of the wire 100 may be provided with the plug 200, and of course, a male plug may be provided, or a female plug may also be provided, which may be provided according to actual needs.

In other embodiments, there may be one wire 100 of the wiring harness 1000.

Generally, the housing 210 of the wire harness 1000 is made of plastic, and a potential safety hazard occurs due to problems such as abrasion or poor contact at the connection between the conductor 10 and the terminal 220. In the present embodiment, the material of the housing 210 includes ceramic. The shell 210 is made of ceramic, which is an all-insulation refractory material, and the ceramic material has excellent wear resistance, can improve the wear resistance, fire resistance and mechanical strength of the plug 200, reduce the possibility of short circuit of a circuit, greatly reduce the risk of fire on the joint of the wire harness 1000, and reduce the occurrence of safety accidents.

Further, the accommodating space 211 is filled with a filling layer 230. The filling layer 230 is filled in the receiving space 211, so that the connection between the conductor 10 and the terminal 220 can be secured. In the present embodiment, the material of the filling layer 230 includes magnesium oxide. The magnesium oxide is filled in the accommodating space 211, so that not only can the safety and reliability of the connection part of the conductor 10 and the terminal 220 be ensured, but also the magnesium oxide has certain heat resistance, and the fireproof heat resistance of the plug 200 can be further improved. Of course, in other embodiments, the accommodating space 211 may be filled with other insulating materials.

In addition, in this embodiment, there are a plurality of wires 100 of the wire harness 1000, when a fire occurs in one of the wires 100, the conventional wire harness will usually ignite the surrounding wire 100 and can extend to more parts and wires 100, the outermost layer of the wire 100 of the wire harness 1000 adopts the expandable intumescent fire retardant coating, when a fire occurs in one of the wires 100, the intumescent fire retardant coating layer of the surrounding wire 100 is heated to form a protective isolation layer, and the higher the temperature is, the thicker the protection layer is, thereby isolating the fire source and ensuring the safety of the other wire harnesses 1000. The ceramic layer 32 is disposed in the middle of the lead 100, and can protect the conductor 10 inside the lead 100, so as to ensure normal energy transmission and communication transmission in case of fire.

When the wire 100 of pencil 1000 is one, when middle pencil 1000 conflagration breaks out, the intumescent fire protection coating layer of pencil 1000 on every side is heated and can be formed the protection isolation layer to the temperature is higher, and the inoxidizing coating is thicker, and then keeps apart the fire source, ensures other pencil 1000's security. The ceramic layer 32 is disposed in the middle of the lead 100, and can protect the conductor 10 inside the lead 100, so as to ensure normal energy transmission and communication transmission in case of fire.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The lead is characterized by comprising a conductor, and an insulating layer, a fire-resistant layer and a fire-resistant layer which can expand when heated, which are sequentially coated on the outer side of the conductor from inside to outside.

2. The lead according to claim 1, wherein the refractory layer comprises a first sheath layer, a ceramic layer and a second sheath layer which are coated on the outer side of the insulating layer in sequence from inside to outside.

3. The lead of claim 2, wherein the material of the first jacket comprises carbon fiber; and/or

The material of the second sheath comprises carbon fiber.

4. The wire of claim 2, wherein the material of the ceramic layer comprises a cerammed silicone rubber.

5. A conductor as claimed in claim 1, wherein the material of the fire-blocking layer comprises an intumescent fire-blocking coating.

6. A wire harness comprising at least one wire according to any one of claims 1 to 5;

at least one end of each wire is provided with a plug.

7. The wire harness according to claim 6, wherein the plug includes a housing and a terminal connected to the conductor;

the inside formation accommodation space of shell, the one end of conductor extends to in the accommodation space, the one end of terminal extends to in the accommodation space and with the conductor is connected.

8. The wire harness of claim 7, wherein the material of the housing comprises a ceramic.

9. The wire harness according to claim 7, wherein the accommodating space is filled with a filling layer, and a material of the filling layer includes magnesium oxide.

10. The wire harness according to claim 6, wherein the plug is provided at both ends of each of the wires, the plug at one end of the wire being a male plug, and the plug at the other end of the wire being a female plug.