CN209000627U - Fire prevention charging cable and charging system - Google Patents

Fire prevention charging cable and charging system Download PDF

Info

Publication number
CN209000627U
CN209000627U CN201822119965.9U CN201822119965U CN209000627U CN 209000627 U CN209000627 U CN 209000627U CN 201822119965 U CN201822119965 U CN 201822119965U CN 209000627 U CN209000627 U CN 209000627U
Authority
CN
China
Prior art keywords
layer
core wire
fire prevention
coated
conductor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201822119965.9U
Other languages
Chinese (zh)
Inventor
韩字航
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Jiquan New Energy Technology Co Ltd
Original Assignee
Shenzhen Jiquan New Energy Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Jiquan New Energy Technology Co Ltd filed Critical Shenzhen Jiquan New Energy Technology Co Ltd
Priority to CN201822119965.9U priority Critical patent/CN209000627U/en
Application granted granted Critical
Publication of CN209000627U publication Critical patent/CN209000627U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

Landscapes

  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The utility model discloses a kind of fire prevention charging cable and charging system, which includes: the surrounding layer for combining core wire and being coated on the combination core wire, wherein the surrounding layer is the fire-protection modifying plastic layer of ceramic；Wherein, the combination core wire, comprising: protective grounding core wire, control confirmation core wire and four charge power supply core wires, four charge power supply core wires and the protective grounding core wire are around control confirmation core wire arrangement；Four charge power supply core wires include conductor, fireprotection layer and insulating layer, and the fireprotection layer is wrapped to be coated on the conductor, and the insulating layer is coated on the fireprotection layer.It is possible thereby to prevent the internal or external fire of cable by surrounding layer and fireprotection layer, the safety of charging is improved.

Description

Fire prevention charging cable and charging system
Technical field
The utility model relates to electrical equipment more particularly to a kind of fire prevention charging cables and charging system.
Background technique
In recent years, since electric car itself is pollution-free and does not discharge carbon dioxide, without tail gas pollution, there is energy-saving ring The advantage of guarantor has become the precondition of new-energy automobile development for Vehicular charging so that pure electric automobile is more more and more universal. In order to accelerate to promote the development of new-energy automobile industry, some areas government puts into effect relevant policies and requires each new parking for governments at all levels It stands, it is necessary to can just be checked and accepted with a certain number of charging piles of foot, time parking lot of respectively stopping has been equipped with a large amount of electric car Electrically-charging equipment, for new-energy automobile charge use.Since the range of construction is wide, the personnel used are more, and belong to Electrical Safety Management area further relates to the connection between vehicle and charging circuit, and therefore, fire safety is very important, however existing Cable there is no fire-proof functions.Therefore, it is necessary to provide a kind of safe and reliable fire prevention charging cable to solve the above problems, And then meets market and use development need.
Utility model content
The utility model provides a kind of fire prevention charging cable and charging system, it is intended to improve and be filled using fire prevention charging cable Safety when electric.
On the one hand, the utility model additionally provides a kind of fire prevention charging cable comprising: it combines core wire and is coated on described The surrounding layer of core wire is combined, wherein the surrounding layer is the fire-protection modifying plastic layer of ceramic；
Wherein, the combination core wire, comprising: protective grounding core wire, control confirmation core wire and four charge power supply core wires, four Charge power supply core wire described in root and the protective grounding core wire are around control confirmation core wire arrangement；Four charge power supplies Core wire includes conductor, fireprotection layer and insulating layer, and the fireprotection layer is wrapped to be coated on the conductor, and the insulating layer is coated on On the fireprotection layer.
In the fire prevention charging cable of the utility model, the control confirmation core wire includes two signal conductors, shielded layers And external sheath layer, the shielded layer are wrapped on the signal conductor, the external sheath layer is coated on the shielded layer；Its In, two signal conductors include conductor, the wrapped fireprotection layer being coated on the conductor and are coated on the fire prevention Insulating layer on layer.
In the fire prevention charging cable of the utility model, the shielded layer includes metal wire knitted gauze screen.
In the fire prevention charging cable of the utility model, two signal conductors are described according to positive or reverse twisted Shielded layer is wrapped around on twisted signal conductor.
In the fire prevention charging cable of the utility model, the protective grounding core wire include conductor, it is wrapped be coated on it is described Fireprotection layer on conductor and the insulating layer being coated on the fireprotection layer.
In the fire prevention charging cable of the utility model, the fireprotection layer includes the double-deck fire prevention mica.
In the fire prevention charging cable of the utility model, the fireprotection layer is wrapped to be coated on corresponding cladding on the conductor Duplication is 15% to 25%.
In the fire prevention charging cable of the utility model, the insulating layer of the charge power supply core wire is with the first resistance to temperature value Insulation material layer；The insulating layer of the protective grounding core wire is the insulation material layer with the second resistance to temperature value；Wherein first is resistance to Temperature value is different with the second resistance to temperature value.
In the fire prevention charging cable of the utility model, the first resistance to temperature value is 125 degrees Celsius；The second resistance to temperature value It is 105 degrees Celsius.
On the other hand, the utility model additionally provides a kind of charging system comprising: charging pile and with charging pile electricity Property connection charging gun, the cable of the charging gun is that any one of the above is prevented fires charging cable.
The utility model embodiment provides a kind of fire prevention charging cable and charging system, the fire prevention charging cable include: Combination core wire and the surrounding layer for being coated on the combination core wire, wherein the surrounding layer is the fire-protection modifying plastic layer of ceramic；Its In, the combination core wire, comprising: protective grounding core wire, control confirmation core wire and four charge power supply core wires, four chargings Power supply core wire and the protective grounding core wire are around control confirmation core wire arrangement；Four charge power supply core wires include Conductor, fireprotection layer and insulating layer, the fireprotection layer is wrapped to be coated on the conductor, and the insulating layer is coated on the fireprotection layer On.It is possible thereby to prevent the internal or external fire of cable by surrounding layer and fireprotection layer, the safety of charging is improved.
Detailed description of the invention
In order to illustrate more clearly of the utility model embodiment technical solution, will make below to required in embodiment description Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the utility model, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing.
Fig. 1 is a kind of cross section structure schematic diagram for fire prevention charging cable that an embodiment of the present invention provides；
Fig. 2 is the cross section structure schematic diagram for the control confirmation core wire that an embodiment of the present invention provides；
Fig. 3 is the cross section structure schematic diagram for the control confirmation core wire that another embodiment of the utility model provides；
Fig. 4 is a kind of cross section structure schematic diagram for fire prevention charging cable that another embodiment of the utility model provides；
Fig. 5 is a kind of structural schematic diagram for charging system that an embodiment of the present invention provides.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model It clearly and completely describes, it is clear that the embodiments are a part of the embodiments of the present invention, rather than whole implementation Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work The every other embodiment obtained, fall within the protection scope of the utility model.
It is also understood that in this utility model term used in the description merely for the sake of description specific embodiment Purpose and be not intended to limit the utility model.As used in the utility model specification and appended book Like that, other situations unless the context is clearly specified, otherwise " one " of singular, "one" and "the" are intended to include plural number Form.
It will be further appreciated that the term used in the utility model specification and appended book " and/ Or " refer to any combination and all possible combinations of one or more of associated item listed, and including these groups It closes.
Referring to Fig. 1, Fig. 1 is a kind of cross section structure signal for fire prevention charging cable that an embodiment of the present invention provides Figure.The fire prevention charging cable is chiefly used in charging to electric car, which has preferable fire-proof function, thus may be used To improve the safety of charging.
As shown in Figure 1, fire prevention charging cable 100 include: combination core wire 10 and with surrounding layer 20, surrounding layer 20 is coated on group It closes on core wire 10.Wherein, combination core wire 10 includes charge power supply core wire 11, protective grounding core wire 12 and control confirmation core wire 13； Surrounding layer 20 is the fire-protection modifying plastic layer of ceramic.
Wherein, the fire-protection modifying plastic layer of ceramic uses 300 degrees Celsius of the fire-protection modifying plastics of ceramic.The surrounding layer is One layer of fire-protection modifying plastic cement of ceramic, by entire cable molding, the fire-protection modifying material of ceramic can squeeze on conventional extruder Molding out, under the action of being not above 300 DEG C or more high temperature, appearance is as common material.
The quantity of charge power supply core wire 11 is four, protective grounding core wire 12 and control confirm that the data of core wire 13 are one Root.Four charge power supply core wires 11 are as charging cable, it can be achieved that the charging of single-phase or three-phase.
Four charge power supply core wires 11 and protective grounding core wire 12 are arranged around control confirmation core wire 13, form arrangement knot Structure, control confirmation core wire 13 are located in the center of the arrangement architecture.
In one embodiment, charge power supply core wire 11 is identical with the diameter of section of protective grounding core wire 12.Certainly, charging electricity The diameter of section of source core line 11 and protective grounding core wire 12 can not also be identical.
In one embodiment, in the arrangement architecture, four charge power supply core wires 11 and protective grounding core wire 12 with Control confirmation core wire 13 abuts.Protective grounding core wire 12 is abutted against with two adjacent charge power supply core wires 11, charge power supply core The charge power supply core wire adjacent thereto of line 11 abuts.
Four charge power supply core wires 11 include conductor 111, fireprotection layer 112 and insulating layer 113, the wrapped packet of fireprotection layer 112 It overlays on conductor 111, insulating layer 113 is coated on fireprotection layer 112.
Wherein, fireprotection layer 112 includes the double-deck fire prevention mica, naturally it is also possible to be one or more layers fire prevention mica.Fireprotection layer 112 it is wrapped be coated on conductor 111, corresponding cladding Duplication is 15% to 25%, can be prevented because of conductor transient current mistake Load causes internal temperature excessively high, and insulating materials is caused to ignite, and thus it can be prevented that the instantaneous electricity when fire prevention charging cable uses Fire phenomena caused by stream.
Wherein, conductor 111 is that anaerobic thin copper wire passes through bundle strand or bundle strand-manufactured conductor of conjunction strand；Charge power supply core wire 11 insulating layer 113 is the insulation material layer with the first resistance to temperature value, and the first resistance to temperature value is 125 DEG C.Specifically, using heatproof 125 DEG C of insulated plastic extrusion molding is coated on around conductor 11, thus can prevent fire caused by transient current.
Above-mentioned fire prevention charging cable includes: the surrounding layer for combining core wire and being coated on the combination core wire, wherein described outer Covering is the fire-protection modifying plastic layer of ceramic；Wherein, the combination core wire, comprising: protective grounding core wire, control confirmation core wire and Four charge power supply core wires, four charge power supply core wires and the protective grounding core wire are around control confirmation core wire row Column；Four charge power supply core wires include conductor, fireprotection layer and insulating layer, and the fireprotection layer is wrapped to be coated on the conductor On, the insulating layer is coated on the fireprotection layer.The structure of the fire prevention charging cable designs, and can not only guarantee that structure is steady It is fixed, the internal or external fire of cable can also be prevented by surrounding layer and fireprotection layer, improve the safety of charging.
In one embodiment, as shown in Fig. 2, control confirmation core wire 13 includes two signal conductors 131,132 and of shielded layer External sheath layer 133, shielded layer 132 are wrapped on signal conductor 131, and external sheath layer 133 is coated on shielded layer 132 to prevent letter Number interference.
Specifically, shielded layer 132 includes metal wire knitted gauze screen；Two signal conductors 131 are according to positive or reverse strand It closes, shielded layer 133 is wrapped around on twisted signal conductor 131.
Specifically, signal conductor 131 includes conductor 1311 and the insulating layer 1313 being coated on conductor 1311.Wherein, it leads Body 1311 is that anaerobic thin copper wire passes through bundle strand or bundle strand-manufactured conductor of conjunction strand.
In one embodiment, as shown in figure 3, being specially another structure of control confirmation core wire 13, the fire prevention can be made to fill Electrical cables have better fire-proof function.Control confirmation core wire 13 includes two signal conductors 131, shielded layer 132 and oversheath Layer 133, shielded layer 132 is wrapped on signal conductor 131, and external sheath layer 133 is coated on shielded layer 132 dry to prevent stop signal It disturbs.
Wherein, two signal conductors 131 include conductor 1311, the wrapped fireprotection layer 1312 being coated on conductor 1311 with And it is coated on the insulating layer 1313 on fireprotection layer 1312.
Specifically, wherein fireprotection layer 1312 includes the double-deck fire prevention mica, naturally it is also possible to be one or more layers fire prevention cloud It is female.Fireprotection layer 1312 is wrapped to be coated on conductor 1311, and corresponding cladding Duplication is 15% to 25%, can be prevented because of conductor Transient current overload causes internal temperature excessively high, and insulating materials is caused to ignite.
Referring to Fig. 4, the cross section structure that Fig. 4 is a kind of fire prevention charging cable that another embodiment of the utility model provides shows It is intended to.As shown in figure 4, the fire prevention charging cable 100 includes: the surrounding layer 20 for combining core wire 10 and being coated on combination core wire 10. Wherein combine core wire 10, comprising: four charge power supply core wires 11, protective grounding core wire 12 and control confirmation core wire 13, four are filled Power supply core wire 11 and protective grounding core wire 12 are arranged around control confirmation core wire 13.
Wherein, surrounding layer 20 is the fire-protection modifying plastic layer of ceramic, and the modified plastic rubber layer is under no high temperature action and general The production extrusion process of logical plastic cement is consistent, and flexibility is better than common plastic material, has open fire or high temperature action in outside Under, the ceramic plastic cement of surrounding layer 20 will calcination at one layer of armouring shell protection in fire prevention charging cable so that the fire prevention is filled Electrical cables can also work normally in fire hazard environment, and gain time for the disaster relief.
Wherein, four charge power supply core wires 11 include conductor 111, fireprotection layer 112 and insulating layer 113, fireprotection layer 112 around It is coated on conductor 111, insulating layer 113 is coated on fireprotection layer 112.
Wherein, protective grounding core wire 12 includes conductor 121, fireprotection layer 122 and insulating layer 123, the wrapped cladding of fireprotection layer 122 On conductor 121, insulating layer 123 is coated on fireprotection layer 122.
Specifically, fireprotection layer is the double-deck fire prevention mica, naturally it is also possible to be one or more layers fire prevention mica.Fireprotection layer is wrapped It is coated on conductor, corresponding cladding Duplication is 15% to 25%, can be prevented because conductor transient current overload leads to inside Temperature is excessively high, and insulating materials is caused to ignite, and thus it can be prevented that fire caused by the transient current when fire prevention charging cable uses Calamity phenomenon.
In one embodiment, the insulating layer 123 of protective grounding core wire 12 is the insulation material layer with the second resistance to temperature value, should Second resistance to temperature value is 105 degrees Celsius.The conductor 121 of protective grounding core wire 12 is that anaerobic thin copper wire is twisted by bundle strand or bundle strand-conjunction And manufactured conductor.
Referring to Fig. 5, Fig. 5 is a kind of structural schematic diagram for charging system that an embodiment of the present invention provides.This is filled Electric system is used to charge to electric car and hybrid-electric car.It is understood that the charging system may be other electricity Device equipment charges.
As shown in figure 5, the charging system 300 is specifically used for charging to electric car comprising: charging pile 31, charging gun 32 and electric car 30.
Charging gun 32 is electrically connected by cable 100 and charging pile 32, connect use with electric car 30 by charging gun 32 It charges in electric car 30.Wherein, the cable 100 of charging gun 32 is any one fire prevention charging electricity provided by the above embodiment Cable.The fire prevention charging cable prevents the internal or external fire of cable by surrounding layer and fireprotection layer, improves the safety of charging Property.
Wherein, charging gun is made using the plastic material of the first resistance to temperature value, which is 125 DEG C.Since this is anti- Fiery charging cable is to connect with charging gun and charging cabinet, since charging gun uses made of 125 DEG C of plastic materials, further Electrically-charging equipment is protected, the safety of charging is improved.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to In this, anyone skilled in the art within the technical scope disclosed by the utility model, can be readily occurred in various Equivalent modifications or substitutions, these modifications or substitutions should be covered within the scope of the utility model.Therefore, this is practical Novel protection scope should be subject to the protection scope in claims.

Claims (10)

1. a kind of fire prevention charging cable characterized by comprising combination core wire and the surrounding layer for being coated on the combination core wire, Wherein the surrounding layer is the fire-protection modifying plastic layer of ceramic；
Wherein, the combination core wire, comprising: protective grounding core wire, control confirmation core wire and four charge power supply core wires, four institutes Charge power supply core wire and the protective grounding core wire are stated around control confirmation core wire arrangement；Four charge power supply core wires It include conductor, fireprotection layer and insulating layer, the fireprotection layer is wrapped to be coated on the conductor, and the insulating layer is coated on described On fireprotection layer.
2. fire prevention charging cable according to claim 1, which is characterized in that the control confirmation core wire includes two signals Conducting wire, shielded layer and external sheath layer, the shielded layer are wrapped on the signal conductor, and the external sheath layer is coated on the screen It covers on layer；
Wherein, two signal conductors include conductor, the wrapped fireprotection layer being coated on the conductor and are coated on institute State the insulating layer on fireprotection layer.
3. fire prevention charging cable according to claim 2, which is characterized in that the shielded layer includes metal wire knitted shielding Net.
4. fire prevention charging cable according to claim 3, which is characterized in that two signal conductors are according to positive or inverse To being twisted, the shielded layer is wrapped around on twisted signal conductor.
5. fire prevention charging cable according to claim 1 or 2, which is characterized in that the protective grounding core wire include conductor, The wrapped fireprotection layer being coated on the conductor and the insulating layer being coated on the fireprotection layer.
6. fire prevention charging cable according to claim 5, which is characterized in that the fireprotection layer includes the double-deck fire prevention mica.
7. fire prevention charging cable according to claim 5, which is characterized in that the fireprotection layer is wrapped to be coated on the conductor Upper corresponding cladding Duplication is 15% to 25%.
8. fire prevention charging cable according to claim 5, which is characterized in that the insulating layer of the charge power supply core wire is tool There is the insulation material layer of the first resistance to temperature value；The insulating layer of the protective grounding core wire is the insulating materials with the second resistance to temperature value Layer；Wherein the described first resistance to temperature value is different with the second resistance to temperature value.
9. fire prevention charging cable according to claim 8, which is characterized in that the first resistance to temperature value is 125 degrees Celsius；Institute Stating the second resistance to temperature value is 105 degrees Celsius.
10. a kind of charging system, including charging pile and the charging gun being electrically connected with the charging pile, which is characterized in that described The cable of charging gun is any one fire prevention charging cable of claim 1 to 9.
CN201822119965.9U 2018-12-15 2018-12-15 Fire prevention charging cable and charging system Active CN209000627U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822119965.9U CN209000627U (en) 2018-12-15 2018-12-15 Fire prevention charging cable and charging system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822119965.9U CN209000627U (en) 2018-12-15 2018-12-15 Fire prevention charging cable and charging system

Publications (1)

Publication Number Publication Date
CN209000627U true CN209000627U (en) 2019-06-18

Family

ID=66808423

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201822119965.9U Active CN209000627U (en) 2018-12-15 2018-12-15 Fire prevention charging cable and charging system

Country Status (1)

Country Link
CN (1) CN209000627U (en)

Similar Documents

Publication Publication Date Title
CN104240832A (en) Novel flame-retardant fireproof cable
CN209216606U (en) Self-luminescence cable and charging system
CN106057337A (en) Below-35kV copper core and aluminum core coaxial composite plastic insulated cable
CN102306517A (en) Environmental friendly flame retardant soft cable for equipment
CN209000627U (en) Fire prevention charging cable and charging system
CN201522870U (en) Control cable for direct current traction power supply system
CN204102616U (en) A kind of novel flame-retardant fireproof cable
CN203787152U (en) Slurry-resistant high-voltage power cable used for oil platform
CN207624400U (en) A kind of long-life strong radiation resistant instrument cable used under harsh environment
CN203787136U (en) High-temperature-resistant high-voltage tensile reinforced shield flat cable
CN201383372Y (en) Radiation-resistance combination shielding compensation cable used for nuclear power station
CN202549349U (en) Fireproof shielded cable for computer
CN201237936Y (en) 35KV and below water-resistant cable
CN201111986Y (en) Nontoxic cable for preventing lightning and electromagnetic interference
CN207074569U (en) A kind of high-performance environment protection type mine control cable
CN109449667A (en) A kind of charging connection equipment and charging system
CN205862872U (en) Halogen insulation power cable used on ship
CN205487545U (en) Oil platform is with this ampere of instrument communication cable
CN218602137U (en) New energy automobile charges and uses cable
CN204304088U (en) A kind of fireproof cable coupling assembling
CN209281924U (en) A kind of fire proof power cable
CN202563966U (en) Low voltage cable special for frequency converter
CN202120647U (en) Flame-retarding fireproof flexible cable for environment-friendly equipment
CN210956222U (en) Anti-ultraviolet armored cable
CN202905247U (en) Fireproof flame retardation tensile shielding cable

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant