阅读说明：本技术 一种用于商品防盗的快充钢丝线缆 (A fill steel wire cable soon for commodity theftproof ) 是由 陈斌峰 于 2020-05-18 设计创作，主要内容包括：本发明提供一种用于商品防盗的快充钢丝线缆,包括由内至外依次设置的内芯层、隔离层、钢丝层和外层；所述内芯层包括至少一条导线；内芯层是本发明的导电主体之一,通常的导线,例如在背景技术中所提到的数码产品充电防盗线缆,至少需要两个相互电隔离的内芯,以满足形成一正一负的电通路,从而形成电回路的需求,而在本发明中,由于改进了结构,在内芯中,可以只设置一条导线,并且配合其他结构来形成导线整体上的电回路。本发明的快充钢丝线缆相对于传统的铜丝导线以及背景技术中导电线芯外包钢丝的方案,在达到同样电气性能的情况下,能够让线缆更具有柔韧性,提升线缆寿命。(The invention provides a quick-filling steel wire cable for commodity theft prevention, which comprises an inner core layer, an isolation layer, a steel wire layer and an outer layer which are sequentially arranged from inside to outside; the inner core layer comprises at least one conducting wire; the inner core layer is one of the conductive bodies of the present invention, and a common wire, such as the digital product charging anti-theft cable mentioned in the background art, needs at least two inner cores electrically isolated from each other to satisfy the requirement of forming a positive-negative electrical path to form an electrical loop. Compared with the traditional copper wire and the scheme that the conductive wire core is wrapped with the steel wire in the background technology, the quick-charging steel wire cable provided by the invention has the advantages that the flexibility of the cable can be improved and the service life of the cable can be prolonged under the condition that the same electrical performance is achieved.)

1. A fast-charging steel wire cable used for commodity theft prevention is characterized by comprising,

the inner core layer, the isolation layer, the steel wire layer and the outer layer are sequentially arranged from inside to outside;

the inner core layer comprises at least one conducting wire;

the isolation layer is configured to be capable of isolating the inner core layer from the steel wire layer;

the steel wire layer comprises a plurality of strands of steel wire wires, and the steel wire wires comprise insulating layers;

the outer layer is configured to wrap the periphery of the steel wire layer, so that the steel wire cable is prevented from leaking outside.

2. The fast-charging steel wire cable for preventing the theft of commodities as claimed in claim 1, wherein the steel wire comprises a conductive layer.

3. The fast-charging steel wire cable for preventing the theft of commodities as claimed in claim 2, wherein the conductive layer is positioned between the steel wire and the insulating layer.

4. The fast-charging steel wire cable for commodity theft prevention according to claim 3, wherein the conductive layer comprises one or more of tin, aluminum, copper, silver and gold materials.

5. The quick-fill wire cable for merchandise theft protection according to claim 1, wherein said wire is configured to be distributed around the periphery of the insulation.

6. The quick-fill wire cable for merchandise theft protection according to claim 1, wherein said inner conductor comprises a plurality of electrically isolated conductive cores.

7. The quick-charging steel wire cable for preventing the theft of commodities as claimed in claim 6, wherein said inner core layer comprises a plurality of strands of reinforcing wires.

8. The fast-charging steel wire cable for preventing the theft of commodities as claimed in claim 7, wherein the conductive core wire is wound with the reinforcing wire.

9. The quick-fill wire cable for merchandise theft protection according to claim 1, wherein the wire layer is configured to be used for signal transmission and/or power transmission.

10. The fast-charging steel wire cable for preventing the theft of commodities as claimed in claim 1, wherein the cable can be wound into a spring.

Technical Field

The invention relates to the field of commodity theft prevention, in particular to a cable for playing a role in signal and/or electric transmission in a commodity theft prevention device in the field of commodity theft prevention.

Background

With the development of commodity experience type services, the display and experience functions of commodities are more opened to purchasers or potential purchasers, and meanwhile, the requirement for commodity theft prevention is continuously increased. On one hand, the various requirements of an experiencer are met as much as possible, all functions of the commodity and the surface which is the most good and convenient are shown to the experiencer as much as possible, on the other hand, the possible stealing behaviors of people who are in poor mind are prevented, the hidden danger that the commodity is possibly stolen in the showing and experiencing process is reduced or even eliminated as much as possible, and under the industrial environment, the commodity anti-theft industry is brought into play.

The anti-theft device is contacted with or connected with the commodity, and when the commodity is possibly in a theft risk, the anti-theft device can give an alarm or give an alarm instruction to the alarm to prompt staff in a display place. Generally speaking, a commodity anti-theft device detects whether a commodity is in a safe state through a sensor, and if the sensor detects a non-safe state, a signal can be sent to an alarm device to trigger an alarm, in this case, at least one cable is connected between every two of the commodity, the sensor and the alarm device, generally, the cable can be used for transmitting signals, in some cases where demands are different, for example, the commodity is an electronic product, the cable can also be used for supplying power to the commodity, and in some cases, the cable can also be used for supplying power to the commodity and detecting the safety of the commodity at the same time.

In practical application, as for the aspect of commodity theft prevention, different national regions have different requirements on the commodity theft prevention safety level due to different conditions, for example, asia pacific countries have better environments such as public security and the like, and often only need the sensor to separate commodities to commodity theft prevention equipment, and the monitoring device is triggered to give an alarm, so that behaviors of stealing can be deterred in time and a salesperson can be reminded to know the behaviors. In this case, the simplest and most effective way is: the anti-theft alarm charging cable is based on a sensor cable of a traditional connection commodity, and is wrapped by materials such as a steel wire or a metal hose, so that the anti-theft alarm charging cable has good tensile and shearing resistance, and the anti-theft alarm charging cable is also a general scheme aiming at the situation in the industry at present.

This solution also brings some disadvantages while meeting the requirements, such as: in terms of electronic devices, in order to achieve longer endurance and faster processing speed, it is necessary to provide a strong power supply guarantee from the outside during the process of exhibiting the functions, in other words, it is necessary for the anti-theft devices corresponding to the commodities to provide a larger charging current to meet the requirement of fast charging, so as to ensure that the power exhaustion is avoided during the process of exhibiting, and the user cannot experience the functions or characteristics of the anti-theft devices. Therefore, the wire of the anti-theft device needs lower impedance and higher conductive efficiency, so that the core wire becomes thick, and the whole cable is very thick and bulky due to the wrapping of the peripheral steel wire or the metal hose, so that the attractiveness of display and the simplicity of environment are influenced, and the wire is not soft enough and can only be made into a straight line or a spring with a larger radius due to the rigidity of the steel wire or the metal hose, so that the commodity taking or playing experience of a client is influenced.

In the prior art, some improvements are made on cables, and the functions of the cables can be expanded, for example, chinese patent CN207097518U discloses a stretch-resistant fireproof alarm cable, in which a fireproof layer and a temperature control line are designed, so as to improve the fireproof alarm sensitivity of the cable, but the principle and requirements of fireproof alarm are different from those of antitheft alarm, and the fireproof alarm does not need the functions of conduction and charging; for another example, chinese patent CN207558457U discloses a steel wire cable, which includes an outer layer of steel wire, an outer sheath, a braided reinforcing layer, an inner sheath, an isolation layer, a filler, an insulating layer, a wire, and a reinforcing rubber filler, wherein the reinforcing rubber filler is located at the center of the steel wire cable, the insulating layer wraps the wire to form a plurality of wire cores, the rubber filler surrounds the wire cores, the filler is filled around the wire cores, and the isolation layer is lapped around the wire cores and the filler outer layer, the steel wire cable has a complex structure and a robust overall shape, is suitable for a large-scale outdoor operation, is not suitable for a delicate small-scale industry, and does not have a function of rapid charging; in addition, chinese patent CN106057317B is the method of the more popular digital product theftproof cable that charges earlier, reduce the phenomenon of generating heat among the wire transmission current process through the combination of dupont cellosilk and tinned wire, come to protect the wire through protective sheath and steel wire ring layer in addition, but in the in-service use, the cable can have the inner core tinned wire part rupture that leads to after buckling many times, this electrically conductive cross-section that just leads to cable rupture position to correspond diminishes, thereby still be difficult to avoid the risk of generating heat during the too big electric current.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art, and provides a quick-charging steel wire cable for preventing the theft of commodities, which can creatively overcome the use problem of the cable in the anti-theft field.

A quick-charging steel wire cable used for preventing the theft of commodities,

comprises an inner core layer, an isolation layer, a steel wire layer and an outer layer which are arranged in sequence from inside to outside;

the inner core layer comprises at least one conducting wire; the inner core layer is one of the conductive bodies of the present invention, and a common wire, such as the digital product charging anti-theft cable mentioned in the background art, needs at least two inner cores electrically isolated from each other to satisfy the requirement of forming a positive-negative electrical path to form an electrical loop.

The barrier layer is configured to block the inner core layer from the wire layer; the isolation layer is the insulating layer also, through blockking of isolation layer, can avoid the epidermis wearing and tearing of the wire of inner core layer in current transmission process, prevent to take place to contact with the steel wire layer and lead to the short circuit.

The steel wire layer comprises a plurality of strands of steel wire wires, the steel wire layer can be used as another conductive main body corresponding to the inner core layer besides the protection effect on the inner core layer, generally speaking, the conductive performance of the steel wire is inferior to that of the copper wire, but the steel wire has certain elasticity and flexibility, the strength of the steel wire is far higher than that of the copper wire, compared with the softer copper wire, the steel wire can obviously improve the shearing resistance and the tensile resistance of the cable, but as the cable, the steel wire needs to be frequently taken up by a user and changed in various directions, and therefore needs to have certain flexibility, in order to solve the problem, the diameter of the steel wire can be within 0.2mm, and the flexibility of the steel wire can be improved by bending the steel wire thin under the condition of keeping the shearing resistance and the tensile resistance of the steel wire.

The steel wire comprises an insulating layer; when the steel wire is bent, the metal molecules in the steel wire are changed in position, the bent inner metal molecules are compressed and gathered, and the bent outer metal molecules can form the phenomenon of uneven heating at the bent position due to uneven distribution and different states of the metal molecules if current passes through the bent outer metal molecules at the same time, so that the long-term uneven heating can seriously reduce the service life of the steel wire. Thereby avoiding brittle fracture and heat accumulation of the steel wire when the steel wire is bent.

The outer layer is configured to wrap the periphery of the steel wire layer, so that the steel wire cable is prevented from leaking outside; the outer layer is used for protecting the steel wire and the whole cable, and all the conductive structures in the cable are wrapped in the outer layer.

Further, the steel wire comprises a conductive layer. In order to improve the conductive capability of the steel wire and enable the conductive capability of the steel wire to be matched with that of the inner core layer, the steel wire can be further wrapped with a conductive layer, and the conductive layer can be combined to the outer surface of the steel wire and forms an integrated wire with the steel wire.

Further, the conductive layer is located between the steel wire and the insulating layer.

Further, the conductive layer comprises one or more of tin, aluminum, copper, silver, gold and the like.

Through the structure, in the cable, the conductive layer and the steel wire layer are combined through the X-clad steel (X is a conductive material), so that the flexibility and the strength of the steel wire are kept, and the conductive capacity of the steel wire is effectively improved.

Further, the steel wires are configured to be distributed around the periphery of the isolation layer.

Further, the inner core wire comprises a plurality of electrically isolated conductive cores from each other.

Further, the inner core layer includes a plurality of strands of reinforcing filaments.

Further, the conductive core wire and the reinforcing wire are wound in a rewinding mode. The conductive core wire and the reinforcing wire are combined together by adopting a rewinding process, so that the bending resistance of the wire can be effectively improved.

Further, the steel wire layer is configured to be usable for transmitting signals and/or transmitting power.

Further, the cable can be wound into a spring. By adopting the cable structure, the cable has good conductivity and good elasticity and flexibility, so that the cable can be wound into a spring wire for use.

The invention has the beneficial effects that:

(1) compared with the traditional copper wire conductor and the scheme that the conductive wire core is wrapped with the steel wire in the background technology, the quick-charging steel wire cable can enable the bending radius of the cable to be reduced by at least 20% under the condition of achieving the same electrical performance, has flexibility, and correspondingly prolongs the service life of the cable.

(2) According to the invention, the steel wire layer is used as the conductive layer through the design of the inner core layer and the outer side wrapping the steel wire layer, so that the inner core layer comprises at least one wire and can transmit one path of current (such as current +, for example), the steel wire can be used as the other wire and transmit the other path of current (such as current +, for example), and the inner core layer originally required to comprise at least two wires (including the insulating layer) can be reduced to one wire through the current transmission mode, so that the diameter of the whole cable is reduced, and the cable can be made thinner under the same performance.

(3) The steel wire is adopted as one wire, in order to solve the problem that the rigidity of the steel wire is excessive and the flexibility of the steel wire is insufficient, the steel wire is changed into the steel wire with smaller radius, and the steel wire is wound in a multi-strand mode, so that the whole wire can be more flexible under the condition that the steel wire achieves the same shearing resistance and tensile resistance, can adapt to bending in various shapes, and is manufactured into spring wires, winding and other use modes.

(4) After the steel wire is made into a thin wire, because the application scene is in the field of commodity anti-theft display, the cable can be continuously stretched, twisted, bent and the like in the process of commodity experience, under the frequent condition, part of the wire core of the cable is broken at the position where the cable is bent more, once part of the wire core is broken, the cable is heated due to the fact that the radius of a conductive section of a bending point is suddenly reduced when a large current passes through the cable, and even fire hazard can be caused under the serious condition, in view of the above condition, the invention adds an insulating layer on the outer side of each strand of the inner core layer and the steel wire, so that the wire core and the steel wire can be protected on one hand, and on the other hand, under the condition that the insulating layer is added, even if part of the wire core or the steel wire is broken in the cable bending process, the conductive impedance of the whole cable can only be increased due to the separation, without increasing local impedance, thereby avoiding overheating and even burning of the wire.

(5) In the invention, the outer layer of the steel wire is wrapped with a medium layer with lower resistance, such as tin, aluminum, gold and other materials, since the current distribution inside the conductor is not uniform when there is an alternating current or an alternating electromagnetic field in the conductor, the current is concentrated on the "skin" part of the surface of the conductor, i.e. a thin layer on the outside of the conductor, creates the so-called current skin effect, and in the current skin effect, the closer to the surface of the conductor, the greater the current density, while the current inside the conductor is small, that is, when the cable of the invention is passing an alternating current (for example for supplying power to a commercial product), because of the current skin effect, the current in the steel wire can be concentrated on the surface of the steel wire, namely the wrapped dielectric layer with lower impedance for transmission, like this, improve the current transmission efficiency on steel wire surface and can obviously promote the conducting capacity of steel wire line to realize the quick charge of steel wire. In addition, the conductive performance of the steel wires is improved, so that the number of the steel wires can be further reduced under the condition of meeting the rated current transmission requirement, and the overall diameter of the cable is further reduced.

Drawings

Fig. 1 is a schematic view of a steel wire cable of embodiment 1 of the present invention.

Fig. 2 is a sectional view of a steel wire cable of embodiment 1 of the present invention.

Fig. 3 is an enlarged view of circled portion a in fig. 2.

Fig. 4 is an enlarged view of circled portion B in fig. 2.

Fig. 5 is a schematic view of a steel wire cable of embodiment 2 of the present invention.

Fig. 6 is a sectional view of a steel wire cable of embodiment 2 of the present invention.

Fig. 7 is a schematic view of a steel wire cable of embodiment 3 of the present invention.

Fig. 8 is a sectional view of a steel wire cable of embodiment 3 of the present invention.

Fig. 9 is a diagram of an application scenario of the present invention.

Fig. 10 is a schematic view of the article of manufacture of fig. 9 in combination with the article of merchandise.

Fig. 11 is a diagram of another application scenario of the present invention.

Fig. 12 is a schematic view of the article of manufacture of fig. 11 in combination with the article of merchandise.

Detailed Description

In order to make the technical solutions of the present invention better understood, 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.

Anti-theft commodity

The merchandise theft prevention referred to in the present invention is particularly directed to some merchandise, such as electronic products, which need to be functionally displayed to a purchaser or a potential purchaser, some functions of the merchandise need to be known by a user in a use situation, the merchandise generally has some man-machine interactive interfaces, a exhibited person can contact within a certain range and can exemplarily or illustratively use all or part of the functions of the merchandise, so as to know the performance of the merchandise, in the industry, the merchandise with the functional display requirement is sometimes referred to as merchandise with experience requirement, that is, the exhibited person can operate and experience the merchandise displayed within a limited condition and range, therefore, the merchandise can be directly contacted by an experiencer, the experiencer can be within a limited range of a seller or an owner of the merchandise, for example, the commodities can not be taken out of the sales site, and the ownership of the displayed commodities is also attributed to the seller or the commodity holder, so that anti-theft measures are needed, the anti-theft measures do not limit the use of the experiencers, but only limit the experiencers to take the commodities out of the sales site, and even in some cases, the anti-theft measures need to consider not to hinder the use of the experiencers as much as possible so that the experiencers can obtain better use experience, which is different from the concept of anti-theft in mass vendor sales.

Safe/non-safe states

The state of security or non-security in the present invention refers to the state of the displayed merchandise, especially refers to the state of the relationship between the displayed merchandise and the anti-theft device when the anti-theft device is installed, generally speaking, the merchandise is in the state that we believe it will not be stolen, called the security state, we believe it is possible to be stolen, called the non-security state, whether the anti-theft measure is intact, whether the displayed merchandise is under the protection of the anti-theft measure, if it is, we consider it is the security state, if it is not, we consider it is the non-security state, that is, this security or non-security state may be relative to the anti-theft measure, for example, the anti-theft measure is to keep the displayed merchandise connected with the charging interface all the time, then the sensor detects the charging interface, whether it is connected with the merchandise all the time, if it is, the state is in a safe state, and if the connection is disconnected, the state is in a non-safe state; or if the anti-theft measure is to keep the commodity in a charging state all the time, the sensor detects whether the charging cable of the commodity keeps power transmission, if so, the charging cable is in a safe state, and if not, the charging cable is in a non-safe state; or, if the anti-theft measure is that the commodity is clamped by the clamping device, the sensor detects whether the commodity is in the clamping space or whether the commodity is in contact with or installed on the clamping device, if so, the commodity is in a safe state, and if not, the commodity is in a non-safe state; and so on.

Cable with a flexible connection

The cable plays an important role in the field of commodity theft prevention, the cable not only plays a role in physical connection and/or power transmission, but also can provide data transmission (including weak current) in the cable under certain conditions, so that power and data connection can be simultaneously provided for two sides connected with the cable, one side can provide electric energy or transmit data signals to the other side, or the two sides can have mutual transmission of power and data signals, in certain conditions, a power transmission line in the cable can be used as an induction loop, namely, a judgment factor for detecting whether the cable is on or off, for example, when the cable has power transmission, the induction loop can be considered to be smooth, the cable is in a normal connection state, and if the cable is connected with a commodity and a theft prevention host, the commodity can be considered to be in a safe state, or, when signals are transmitted in the cable, the induction loop can be considered to be smooth, the cable is in a normal connection state, at the moment, if the cable is connected with a commodity and an anti-theft host, the commodity can be considered to be in a safety state, under the condition, the cable can play a role in induction, namely play a part of a sensor, and the cable can be used as a part of the sensor at the moment.

Sensor with a sensor element

The sensor is usually used for sensing a certain signal or sensing a certain state, the sensor in the invention is specially used for commodity safety, namely the commodity anti-theft, the sensor in the invention can be an induction line, also can be a device with an induction element, and also can be an element with an induction function integrated on a connector, and the function of the sensor is to sense the signal and judge whether the displayed commodity is in a safe state or not through the signal. In the present invention, the sensor may be attached to the article of merchandise. In fact, in the field of theft protection of goods, sensors are a widely used prior art, and generally speaking, elements capable of sending out a security signal indicating whether goods are in a safe or non-safe state may be called sensors.

Unauthorized removal

In the present invention, the non-authorization is relative to the authorization, and as in the field of merchandise theft prevention, there are two ways of locking and unlocking, it should generally be in a locked state during the time the merchandise is being displayed, in which state the merchandise is not stolen, in addition to theft, however, it is possible that an item may be actively removed from the anti-theft device by the merchant, for example, when an item has been released from the market and is no longer sold, the corresponding exhibit is also taken down, which involves the replacement of the goods, or when the exhibit has quality problems, which require maintenance, and may also need to be removed from the anti-theft device, when the displayed merchandise is replaced or repaired, the merchandise may be removed from the anti-theft device by a staff (merchant) with authority, such removal is referred to as removal with authorization, whereas removal is considered unauthorized.

Security signal

Security signals are also a well-known concept in the field of article surveillance, when an article is in an unsecured state, some components in an article surveillance system will send out a security signal, which may be a sensing signal or an electrical signal or a digital signal, which may be triggered by many methods/events in the prior art, for example, the event may be a physical disconnection or a circuit disconnection, the triggering method may be sensing by the sensing component, the sensing signal is transmitted to the corresponding device, the corresponding device can send out a security signal according to the most basic logic judgment (yes/no) after receiving the sensing signal, in the field of article surveillance, the general triggering method may be disconnection, disconnection charging, detachment from an installed component, or destruction in a certain set manner, may trigger the generation of a security signal, which is conventional in the art.

Monitoring device

The monitoring device of the present invention may include a conventional article surveillance device, such as a burglar alarm, a surveillance host, etc., and may also include other article security related devices, such as the aforementioned sensor, the monitoring device may be used to monitor the article security system, such as the aforementioned sensor, the monitoring device may send out a security signal, and may receive the security signal by other devices and perform an alarm operation according to the security signal, for example, the performed device may be an alarm or a buzzer.

Alarm/warning

In the field of merchandise theft prevention, an alarm is also a common theft prevention device, and is mainly used for performing an alarm operation according to a security signal sent by a monitoring device/sensor/cable, etc., and a typical example of an alarm device is an alarm for sending an alarm prompt sound to prompt a worker in a sales place that a merchandise may be in a safe or non-safe state. Generally, the alarm function of the alarm device can be called as sending an alarm signal, the alarm signal such as an alarm prompt tone and sometimes including an optical signal, and is called as an audible and visual alarm.

Detailed description of the preferred embodiments

Example 1, reference is made to FIGS. 1-4, 9-12.

As shown in figure 1, the invention provides a quick-filling steel wire cable for commodity theft prevention, which comprises an inner core layer 1, an isolation layer 2, a steel wire layer 3 and an outer layer 4 which are sequentially arranged from inside to outside, wherein the outer layer 4 is an outer coating layer of the cable and is used for coating the whole cable to prevent internal wires from being exposed and protect the whole cable, the outer layer can be made of common PVC/TPU/TPEE and other materials, and the coating is carried out after the other materials of the cable are manufactured.

As shown in fig. 4, the inner core layer 1 includes at least one conducting wire 11, the conducting wire 11 may be made of a conventional conducting wire material, such as a copper wire, in order to enhance the strength of the inner core layer 1, a reinforcing wire 12 is disposed in the inner core layer 1, the reinforcing wire 12 may also be a conventional wire and cable reinforcing wire, and the conducting wire 11 and the reinforcing wire 12 are repeatedly wound to form a conductor portion of the inner core layer 1, for the purpose of the present invention, a conductor formed by a rewinding process of one conducting wire and one reinforcing wire may satisfy the creation intention of the present invention, and in actual use, the number of the conducting wires 11 and the reinforcing wires 12 may be determined according to actual over-current requirements, for example, in this embodiment, the conducting wires 11 include 7, the reinforcing wires 12 include 3, wherein the conducting wires 11 include a central core located in the middle and other conducting wires 11 repeatedly wound around the central core, in the repeatedly wound conducting wires 11, a reinforcing wire 12 is arranged between every two wires 11, and the bending resistance of the common wire is improved through the structure. In order to prevent the breakage of the part which is easily formed by repeatedly bending and pulling the inner core layer 1 in use, an enameled wire process is adopted to cover the wire core insulating layer 13 on each wire 11, so that each wire 11 can be insulated independently, thus when any one of the wires is broken, local impedance can not be formed, local heating caused by passing of large current when the wires are quickly filled is avoided, the inner core of each wire is prevented from being burnt out, and the outer side of the inner core layer 1 is also provided with an inner core layer shell 15 which is used as the skin of the inner core layer wire.

As shown in fig. 1-2, the isolation layer 2 is disposed between the inner core layer 1 and the steel wire layer 3, and is used for isolating the inner core layer 1 from the steel wire layer 3, so as to prevent short circuit between the inner core layer 1 and the steel wire layer 3 caused by abrasion of the skin of the inner core layer during current transmission.

As shown in fig. 3, the steel wire layer 3 includes a plurality of strands of steel wire 31, at least one conductive layer 32 is coated outside the steel wire 31, the conductive layer 32 can be one of tin, aluminum, copper, silver and gold materials, or a combination of two or more materials, the conductive layer 32 can be manufactured into an integrated conductive main body with the steel wire 31 through electroplating or coating process, through the design, alternating current passing through a cable during fast charging can be utilized, a current skin effect is formed on the steel wire 31, so that the current can pass through the conductive layer 32 mostly, the conductive performance of the steel wire 31 is greatly improved, and the fast charging is realized to meet the power supply requirement of electronic products in display. In addition, steel wire 31's whole periphery still coats insulating layer 33, and the outside of each steel wire all coats insulating layer 33 for each steel wire 31 can both be insulated alone, like this when arbitrary one of them fracture, can not form local impedance, avoids the local heat generation that leads to through of heavy current when filling soon, avoids steel wire layer 3 to be burnt out.

Preferably, the steel wire layer 3 can be used for transmitting both power and signals, and is used as a safety cable having a sensor function.

As shown in fig. 1-2, the steel wires 31 are distributed around the periphery of the isolation layer 2, and two electrically isolated electric paths of the steel wire layer 3 and the inner core layer 1 are formed through the isolation layer 2, so that the cable of the present invention can form an electric conductive loop when being electrified.

As shown in fig. 9 to 10, the cable of the present invention may be used in an article surveillance device as shown in fig. 9 to 10, the article surveillance device includes a monitoring device 100, a wire winder 101 is provided in the monitoring device 100, a first cable 102 made of the cable structure of the present invention may be wound in the wire winder 101 and extend out from an upper portion of the monitoring device 100, and is connected to a sensor 200, a second cable 201 made of the cable structure of the present invention is provided on the sensor 200, the second cable 201 may be connected to a charging interface of an article 300 through a connector 400, furthermore, the monitoring device 100 of the present invention may be connected to an external power source or an external alarm device through a third cable 103 made of the cable structure of the present invention, in the application scenarios as shown in fig. 9 to 10, the first cable, the second cable and the third cable are all capable of realizing power transmission and signal transmission, the first cable, the second cable and the third cable form an alarm loop with the commodity, the monitoring device and the sensor which are connected with the first cable, the second cable and the third cable, wherein any cable is damaged and the monitoring device or the external alarm device gives an alarm. In addition, due to the strength and the toughness of the cable, the cable is long in service life and not easy to damage.

As shown in fig. 11-12, the cable of the present invention can also be used in the anti-theft device shown in fig. 11-12, the monitoring device 100 is connected to the sensor 200 through the external spring cable 104, the sensor 200 can be a combination of a clip-type sensor and a contact-type sensor, other application manners are the same as those shown in fig. 9-10, in the application scenario shown in fig. 11-12, the spring cable 104 can also be made through the cable structure of the present invention, and then further wound to form a spring wire, due to the flexibility and the shear-resistant and tensile properties of the cable, the cable can also play a good role in conducting electricity and transmitting signals when used as a spring wire, and has a long service life.

Example 2, see figures 5-6.

In this embodiment, as shown in the figure, the outer skins of the isolation layer 2 and the inner core layer 1 are combined into one layer, so that the hierarchical structure of the cable is further simplified, and the diameter of the cable can be further reduced.

Other embodiments of this example are the same as example 1.

Example 3, see figures 7-8.

In the present embodiment, as shown in the figure, in the case that the current throughput needs to be improved and the diameter of the cable can be allowed to be slightly larger, the inner core layer 1 may contain a plurality of wires, for example, three wires in the present embodiment, so as to improve the electric throughput of the cable. Each wire comprises an inner core layer shell 15, so that the wires are mutually insulated, and the potential safety hazard problem caused by wire core breakage is further prevented.

Other embodiments of this example are the same as example 1.