CN210466612U - Safety device for commodity anti-theft - Google Patents

Abstract

The utility model provides a security device for commodity theft prevention, which comprises a sensor, a sensor and a controller, wherein the sensor can be directly or indirectly connected to a commodity and is used for detecting whether the commodity is removed; a cable operatively connected to the sensor, the cable containing at least one metal fiber wire configured to transmit a detection signal on the sensor and/or provide a sensing circuit for detecting the article; the security device is configured to trigger the security device to issue a security signal when the cable is broken and/or the article is illegally removed from the sensor. The utility model uses the cable containing metal fiber wire, and under the same thickness specification, the cable has the advantages of good signal transmission performance, bending resistance, soft texture, tensile resistance and the like, compared with the common wire, under the same signal transmission performance, the cable can be made thinner, and the volume occupied by the cable is reduced; the cable can be made into a straight line, a spring wire and the like, is durable and cannot be damaged by bending.

Description

Safety device for commodity anti-theft

Technical Field

The utility model relates to a commodity theftproof field especially relates to a safety device for commodity theftproof.

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 the one hand, the various requirements of the experience person are met as much as possible, all functions of the commodity and the side which is the most good and convenient are displayed to the experience person as much as possible, on the other hand, the possible stealing behaviors of the person who is in good care are prevented, and the hidden danger that the commodity is possibly stolen in the displaying and experiencing process is reduced or even eliminated as much as possible.

At present, a safety device for commodity theft prevention is generally adopted to ensure the safety of commodities and meet the experience requirements of customers. Most of security devices for preventing the theft of commodities comprise cables, wherein the cables generally adopt common wires to transmit current and/or signals, but the common wires are easily broken after being bent for multiple times, so the cables are generally made into a straight line form, and the cables made into other bent forms are easily broken, and have short service life.

To better transmit signals, cables are often made thicker and less aesthetically pleasing, and thus take up more display platform space.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming the defects of the prior art, the utility model provides a safety device for commodity theftproof.

In order to achieve the purpose, the invention provides the following technical scheme:

a security device for merchandise theft prevention comprising, a sensor configured to be directly or indirectly connected to an article for detecting whether the article is removed; a cable operatively connected to the sensor, the cable containing at least one metal fiber wire configured to carry a detection signal on the sensor and/or provide a sensing circuit for detecting the article; the security device is configured to trigger the security device to issue a security signal when the cable is broken and/or the article of merchandise is illegally removed from the sensor.

Further, the metal fiber wire comprises a plurality of strands of metal fibers with the diameter less than or equal to 30 mu m. The metal fiber has better signal transmission performance, is thinner, and has stronger signal transmission capability under the same thickness specification; under the equal signal transmission ability, adopt the metal fiber wire, can make the cable thinner, metal fiber has the fibrous characteristic moreover, has good mechanical properties, and not only fracture specific strength and tensile specific modulus are higher, and tensile deformation diminishes, and is soft, can be able to bear or endure buckling moreover, and toughness is good.

Furthermore, the cable comprises at least two wires, wherein at least one wire contains a metal fiber wire. In some preferred modes, the cable comprises a metal fiber conducting wire, the metal fiber conducting wire can transmit signals, the signal transmission capacity is high, and the metal fiber conducting wire is only used as a signal wire and does not supply power to commodities. In some preferred modes, the cable comprises two wires which are electrically isolated from each other, and the two wires contain metal fiber wires, so that compared with the common wires, the two wires can be made thinner under the same signal transmission performance, and the volume occupied by the cable can be reduced, thereby improving the user experience; such a cable is also relatively durable and will not be damaged by bending.

Further, the material of the metal fiber is selected from at least one of lead, copper, aluminum and stainless steel. In some modes, the metal fiber is a lead wire, in some modes, the metal fiber is a copper wire, in some modes, the metal fiber is an aluminum wire, in some modes, the metal fiber is a stainless steel fiber, and the stainless steel fiber further has the advantages of good chemical corrosion resistance, difficulty in oxidation in air and the like.

Further, the cable can be configured in at least one of a straight line, a spring wire, a retractable cord reel.

Further, be equipped with the pilot lamp of instructing operating condition on the sensor for instruct operating condition, the pilot lamp can adopt conventional little square or the lamp of little round punctiform, can change colour by monochromatic or red yellow green, can be used for instructing operating condition, the pilot lamp is also the conventional technique in this field the utility model discloses in, the pilot lamp is an application scene, the utility model discloses do not make the improvement to pilot lamp and connection structure.

Further, the sensor includes a connector configured to be connectable to an article of merchandise for detecting whether the article of merchandise is removed.

Further, the connector comprises a common connector for digital products such as MicroUSB, TypeC, Lightning and the like. The connectors can be selected according to the requirements of commodities.

Further, the connector is provided with a fixing piece which is configured to be capable of fastening the combination of the connector and the commodity.

The utility model has the advantages that:

(1) the utility model discloses used the cable that contains the metal fiber wire, so that in signal transmission, under the same thickness specification, the utility model discloses a cable possesses that signal transmission performance is good, resistant buckling, soft texture and anti-stretching etc. advantage, compares with ordinary wire, under the same signal transmission performance, the utility model discloses can do the cable thin, can reduce the volume that the cable occupy like this, promote user experience; such cables can be made in the form of straight lines, spring wires, etc., are relatively durable and will not be damaged by bending.

Drawings

Fig. 1 is a schematic structural view of the sensor and the cable in embodiment 1 (showing the structure inside the cable).

Fig. 2 is a schematic structural view of the sensor and the cable in embodiment 1 (in which the sensor is provided with a contact switch).

Fig. 3 is a schematic structural view of the sensor and the cable in embodiment 1 (in which one end of the cable is bent into a collar structure).

Fig. 4 is a schematic structural diagram of the sensor in embodiment 1 in connection with an article (in which a collar is fitted over the article).

Fig. 5 is a schematic structural view of the cable having a grommet structure in embodiment 2.

Fig. 6 is an internal structural view of a portion a in fig. 5.

FIG. 7 is a schematic view showing the structure of the cord reel in which the cord is stored in embodiment 3.

Fig. 8 is a schematic structural view of the inner conductor of the cable.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in connection with the accompanying drawings, and it should be noted that the embodiments are only specific illustrations of the present invention, and should not be construed as limitations of the present invention.

Anti-theft commodity

The merchandise anti-theft referred to in the utility model, especially for some merchandise that needs to be functionally displayed to buyer or potential buyer, such as electronic product, some functions of these merchandise need to be known by user under the condition of use, these merchandise usually have some man-machine interactive interfaces, the exhibited person can contact and use all or part of functions of these merchandise exemplarily or demonstratively within a certain range, thereby understanding the performance of the merchandise, in industry, sometimes this merchandise with functional display requirement will also be referred to as merchandise with experience requirement, namely the exhibited person can operate and experience the merchandise displayed within the limited condition and range, therefore, these merchandise will be directly contacted by the experienced person, the experienced person can be within the limited range of the seller or merchandise owner, 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 safe or unsafe state referred to in the utility model 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 under the condition of setting the anti-theft device, generally speaking, the merchandise is in the state that we consider it not stolen, which is referred to as the safe state, which we consider possibly stolen state, which is referred to as the unsafe state, whether the anti-theft measure is intact, whether the displayed merchandise is under the protection of the anti-theft measure, if so, we consider it is the safe state, if not, we consider it is the unsafe state, that is, the safe or unsafe state can be relative to the anti-theft measure, for example, the anti-theft measure is that the displayed merchandise is always connected with the charging interface, then, the sensor detects the charging interface, whether it is always connected with the merchandise, if yes, the system is in a safe state, and if the connection is disconnected, the system 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/antitheft cable

The cable is a concept of connection and/or transmission in the present invention, in some cases, the cable may be a purely mechanical connection, connecting two objects, in some cases, the cable may provide power transmission (strong current) to establish power connection for two parties connected by the cable, one party may provide power to the other party, or both parties may have power to transmit each other, in some cases, the cable may provide data transmission (including weak current) to provide power and data connection for two parties connected by the cable, one party may provide power or transmit data signals to the other party, or both parties may have power and data signals to transmit each other, in some cases, the power of the transmission line in the cable may be used as an induction loop, i.e. a determination factor for detecting whether the cable is on or off, for example, when there is power transmission in the cable, the sensing loop can be considered to be smooth, the cable is in a normal connection state, at the moment, if the cable is connected with the commodity and the anti-theft host machine, the commodity can be considered to be in a safe state, or when signals are transmitted in the cable, the sensing loop can also be considered to be smooth, the cable is in a normal connection state, at the moment, if the cable is connected with the commodity and the anti-theft host machine, the commodity can be considered to be in a safe state, under the condition, the cable can play a sensing role and equivalently play a part of a sensor, and the cable at the moment can be used as a part of the sensor. The anti-theft cable in the present invention may be the above-mentioned cable having an inductive loop or capable of transmitting a security signal.

Sensor with a sensor element

The sensor often is used for certain signal of perception or certain state of perception the utility model provides a sensor is exclusively used in commodity safety, just also the commodity theftproof of saying above, the utility model provides a sensor can be an induction line, also can be a device that has sensing element, also can be the component that has the response function of integrated on the connector, and its effect is exactly, can the sensing signal, distinguishes through this signal whether the show commodity is in safe state. In the present invention, the sensor may be connected to the commodity. 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.

Connector with a locking member

The connector can be used for connecting parts, the connector can be inserted or inserted in the connecting part, namely, a plug and a socket are included, the connector can have a charging function, for example, in the form of a charging interface, and can also be connected in a pure structure form, the connector can be connected with a cable, and can also be in a separate form, and when the connector is connected with the cable, the connector can also be used as a part of an induction loop on the sensor.

Unauthorized removal

In the present invention, unauthorized is relative to authorized, because in the field of merchandise theft prevention, there are two ways of locking and unlocking, during the merchandise being displayed, it should be usually in a locked state, in which the merchandise will not be stolen, but besides the theft, the merchandise may be taken off from the theft prevention device by the merchant actively, for example, when a certain merchandise is put off the market and is not sold any more, the corresponding exhibit will also be taken off, which relates to the replacement of the merchandise, or when the quality problem of the exhibit occurs and needs to be repaired, it may also need to be taken off from the theft prevention device, when the displayed merchandise is replaced or repaired, the merchandise will be removed from the theft prevention device by the staff (merchant) with authority, this removal is called as authorized removal, otherwise, it is considered as unauthorized removal, also referred to as illegal removal.

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 or connector, 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, may receive the security signal by other devices and perform an alarm operation according to the security signal, for example, the 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 speaking, can be called to send alarm signal to this kind of alarming function of alarm device, alarm signal for example warning prompt tone, still can include light signal sometimes, is called audible-visual annunciator, the utility model discloses do not improving alarm itself, can send alarm signal, perhaps the device that can report to the police can be regarded as the utility model discloses an alarm.

Example 1, see figures 1-4, 8.

A security device for merchandise theft prevention comprising, a sensor configured to be directly or indirectly connected to an article for detecting whether the article is removed; a cable 2 operatively connected to the sensor, the cable 2 containing at least one metal fiber wire 3 configured to carry a detection signal on the sensor and/or to provide a sensing circuit for detecting the article; the security device is configured to trigger the security device to issue a security signal when the cable 2 is broken and/or the article is illegally removed from the sensor.

When the article is in an unsecured state, some of the components of the security device will emit a security signal, which may be a sensing signal or an electrical or digital signal, which may be triggered by any number of means/events known in the art, for example, the event may be a physical disconnection or a circuit disconnection, the triggering may be sensing by the sensing part, transmitting the sensing signal to the corresponding device, and the corresponding device may send out a safety signal according to the most basic logical judgment (yes/no) after receiving the sensing signal, in the field of merchandise theft protection, the usual triggering means may be disconnection, disconnection of a charging connection, removal from an installed component, or in some defined manner, may trigger the generation of a security signal, which is conventional in the art.

In some preferred forms, as shown in fig. 1-2, the sensor includes a connector 6, the connector 6 including a header 7 and a circuit board, the circuit board being located inside the connector 6; in some preferred modes, the connector 7 may be a connector commonly used in digital products such as microsusb, TypeC, Lightning, etc. In some preferred forms, the connector 7 is configured to be connectable to the merchandise, the connector 7 being selectable according to the type of merchandise interface; in some preferred manners, the cable 2 is configured to be connectable to a circuit board, thereby enabling connection of the cable 2 with the connector 6; in some preferred manners, as shown in fig. 4, the cable 2 is configured to be connectable to the external alarm device 8, and in some preferred manners, as shown in fig. 4, one end of the cable 2 is connected to the sensor, and the other end of the cable 2 is connectable to the external alarm device 8 through a connection plug; the cable 2 can give outside alarm device 8 with the produced safety signal transmission of safety device, reports to the police by outside alarm device 8, and what need explain, outside alarm device 8 can adopt conventional alarm, the utility model discloses do not need the alarm device of customization, the general function that can realize receiving safety signal and report to the police, the utility model discloses also not change alarm device's alarm circuit, as long as with safety signal access alarm circuit's input can.

In some preferred modes, the connector is provided with a fixing piece which is configured to be capable of fastening the combination of the connector and the commodity; in some preferred modes, the fixing piece is a screw, but the fixing piece can be other parts in the prior art; the fixing piece enables the connector to be combined with the commodity more firmly, and a thief is prevented from stealing the commodity easily.

In some preferred forms, the connector 6 is provided with a charging function, and the connector 7 is similar to a charging plug for supplying power to the merchandise. In some preferred modes, the connector 6 is connected with the cable 2, and in some preferred modes, as shown in fig. 1-2, a cable protection structure 19 is arranged at the joint of the cable and the connector, and the cable protection structure 19 can protect the cable from being bent excessively and avoid the joint of the cable from being damaged; in some preferred forms, the solderable wire core of the cable 2 can be attached to a circuit board of the connector 6 to effect connection of the cable 2 to the connector 6.

In some preferred modes, as shown in fig. 2, the sensor further comprises a contact switch 9, the contact switch 9 is arranged near the connecting head 7 of the connector 6, when the contact switch 9 is contacted by the commodity after the connector 6 is connected to the commodity, the contact switch is closed, the alarm device is not triggered, and the alarm is not given; when the commodity is separated from the contact switch 9, the contact switch is turned on, the safety device is triggered to send out a safety signal, and the alarm device receives the safety signal to give an alarm.

In some preferred modes, the cable 2 contains at least one metal fiber conductor 3, and in some preferred modes, the cable 2 comprises one metal fiber conductor 3, the metal fiber conductor 3 can transmit signals, the signal transmission capacity is strong, and the metal fiber conductor 3 is only used as one signal line and does not supply power to commodities.

In some preferred modes, the cable 2 comprises at least two wires, wherein at least one wire contains a metal fiber wire 3, and in some preferred modes, the metal fiber wire 3 comprises a plurality of strands of metal fibers with the diameter less than or equal to 30 mu m; the metal fiber has better signal transmission performance, is thinner, and has stronger signal transmission capability under the same thickness specification by the cable 2 containing the metal fiber conducting wire 3; under the equal signal transmission ability, adopt metal fiber wire 3, can make cable 2 thin, metal fiber has the fibrous characteristic moreover, has good mechanical properties, and not only fracture specific strength and tensile specific modulus are higher, and tensile deformation diminishes, and is soft, can be able to bear or endure buckling moreover, and toughness is good.

In some preferred modes, the cable 2 comprises two wires which are electrically isolated from each other, and the two wires both comprise metal fiber wires 3, so that compared with the common wires, under the same signal transmission performance, the utility model discloses can make the two wires thinner, can reduce the volume that the cable 2 occupies like this, thereby promoting user experience; such a cable 2 is also relatively durable and will not be damaged by bending.

In some preferred modes, the metal fiber is at least one selected from lead, copper, aluminum and stainless steel. In some modes, the metal fiber is a lead wire, in some modes, the metal fiber is a copper wire, in some modes, the metal fiber is an aluminum wire, in some modes, the metal fiber is a stainless steel fiber, and the stainless steel fiber further has the advantages of good chemical corrosion resistance, difficulty in oxidation in air and the like.

In some preferred forms, the cable 2 comprises two conductors electrically isolated from each other, wherein both conductors contain a metal fiber conductor 3; as shown in fig. 8, one of the wires comprises two metal fiber wires 3, the two metal fiber wires 3 are wound together and are similar to a twist shape, the two metal fiber wires 3 are wound and the ends of the two metal fiber wires are embedded in a first metal riveting part 12, the first metal riveting part 12 is connected with a weldable wire core 13, the weldable wire core can be welded and connected on a circuit board, similarly, as shown in fig. 8, the two metal fiber wires 3 are wound together and are similar to a twist shape, the ends of the two metal fiber wires 3 are embedded in a second metal riveting part 14, and the second metal riveting part 14 is connected with another weldable wire core 13; in some preferred modes, two wire similar to twist are arranged in parallel, two weldable wire cores 13 are arranged in parallel, a first metal riveting component 12 and a second metal riveting component 14 are symmetrically arranged, the first metal riveting component 12 and the second metal riveting component 14 are separated by an electric insulating substance and are electrically isolated from each other, and the two wire similar to twist are also electrically isolated, otherwise, a loop cannot be formed; in some preferred forms, the solderable wire cores 13 are located at the ends of the cable 2, and in some preferred forms, as shown in fig. 1-3, the cable sheath 5 encloses the four metal fiber conductors 3, the first metal crimp 12, the second metal crimp 14 and a portion of the solderable wire cores 13, and a portion of the solderable wire cores 13 exposed from the cable sheath 5 for connection to a circuit board, chip or other connector. The utility model discloses used cable 2 that contains metal fiber wire 3, cable 2 has more than connection structure, the metal fiber wire has the fibre characteristic moreover, makes like this in signal transmission, under with the thickness specification, the utility model discloses a cable 2 more possesses signal transmission can the good performance, is resistant to buckle, and texture softness and stretch-proofing advantage are as the signal transmission usage, the utility model discloses can be with cable 2 do fine and thin very soft, but still can better transmit signal, can reduce the volume of cable moreover, promote user experience.

In some preferred modes, the detection mode of the sensor for detecting that the commodity is illegally removed comprises signal loop integrity detection, connector connection detection, contact switch detection and optical sensor detection. Illegal removal refers to unauthorized removal; unauthorized is relative to authorized, and in the field of merchandise theft prevention, there are two ways of locking and unlocking, and during the merchandise being displayed, the merchandise should be normally in a locked state, but the merchandise may also be actively removed from the theft prevention device by a merchant, for example, when the displayed merchandise needs to be replaced or repaired, the merchandise may be removed from the theft prevention device by a staff (merchant) with authority, which is called authorized removal, otherwise, the merchandise is regarded as unauthorized removal, which is also called illegal removal. In some preferred modes, the signal loop integrity detection means that whether a signal loop is complete or disconnected is detected; if the signal loop (here, the signal may be an inductive signal, an electrical signal or a digital signal) is broken, the signal loop is considered to be not complete, and the commodity is considered to be illegally removed, such as the cable 2 being cut off, the current being interrupted, and the like. In some preferred modes, the connector connection detection means detecting whether the article is disconnected from the connector 6, and if the article is disconnected from the connector 6 and is no longer connected to the connector 6, the article is considered to be illegally removed, for example, a thief may pull the article out of the connector 6 and steal the article, which results in the article being disconnected from the connector 6; in some preferred modes, the contact switch detection means detecting whether the commodity is separated from the contact switch; if the article is detached from the contact switch, the article is considered to be illegally removed, such as placing the article on the contact switch, and a thief may steal the article, so that the article is detached from the contact switch. In some preferred modes, the optical sensor detects that a safety signal is formed by detecting the quantity and the change of the luminous flux between the sensor and the commodity contact surface; when the sensor is tightly attached to the commodity, the light enters a little, the luminous flux is in a low state, the commodity is considered to be in a safe state, when the sensor leaves the commodity, the sensor can receive more light, the luminous flux is changed, the commodity is considered to be in a non-safe state, and the commodity is illegally removed. The detection mode all be current mode, these modes can be realized through the means among the prior art moreover, the utility model discloses do not improve these detection modes and the means among the prior art.

In some preferred forms, the cable 2 can be configured in at least one of a straight line, a spring wire, a retractable cord reel. As shown in fig. 1-4, in this embodiment, the cable 2 is made into a form of a straight line and a spring wire, two end portions of the cable are made into a straight line, the other portions are made into a spring wire form, the spring wire can stretch and contract, after the spring wire retracts, the cable 2 has a high bending degree, a metal fiber conducting wire is not easy to break, and the cable is durable, and if other common conducting wires are used as the cable, the cable is easy to break after being frequently bent. In some preferred ways, as shown in fig. 3-4, one end of the cable is bent into a collar 15, the first locking member 16 locks the collar, the end of the cable extends out of the first locking member 16, in some preferred ways, the locking way of the first locking member 16 can be locked by a fastener, such as riveting by a rivet, in some preferred ways, can also be locked by snap-fit or by sliding, can be provided with a limit for sliding or can be reinforced by a fastener after sliding into place; in other preferred forms, the locking form of the first locking member 16 may be locked by other forms, and the present invention does not improve on this. In some preferred forms, as shown in fig. 3-4, the end of the cable extending beyond the first locking member 16 can be connected to the connector 6, the connector 6 can be connected to the article S, and in some preferred forms, the collar 15 can be placed over the article S, as shown in fig. 4, the article S is a headset, the collar 15 can be placed over the shelf of the headset, and the security device can be triggered to emit a security signal when the collar 15 is unauthorized disconnected or the connector 6 is unauthorized separated from the headset or the cable is cut.

In some preferred modes, be equipped with the pilot lamp of instruction operating condition on the sensor for instruct operating condition (the pilot lamp is not shown in the figure), the pilot lamp can adopt conventional small square or the lamp of small circle punctiform, can change colour by monochromatic or red yellow green, can be used for instructing operating condition, the pilot lamp is also the conventional technique in this field the utility model discloses in, the pilot lamp is an application scene, the utility model discloses do not make the improvement to pilot lamp and connection structure.

Example 2, see figures 5-6.

In this embodiment, as shown in figures 5-6, the cable 2 is formed in a straight line, with one end in the form of a collar which is secured by a second locking member 116, which in some preferred forms can be fitted over the article of merchandise and, when the collar 15 is unauthorised broken, can trigger the security device to emit a security signal.

As shown in fig. 6, the cable comprises two wires, each comprising two metal fiber wires 3, the two metal fiber wires 3 being twisted together.

In this embodiment, as shown in fig. 5, the connector is provided with a fixing member 18 configured to fasten the connector to the merchandise. In some preferred forms, the fixing member 18 is located in the vicinity of the connecting head, as shown in fig. 5, and in this embodiment, the fixing member 18 is a screw.

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

Example 3, see figure 7.

In this embodiment, the cable 2 is made in one form of a retractable cord reel 11; as shown in fig. 7, the cable 2 is wound in the reel 11, and the metal fiber conductor 3 is used for the cable, so that the cable still has good signal transmission performance after being wound for a plurality of times, and is durable and will not break due to winding and bending.

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

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Claims (9)

1. A security device for preventing the theft of commodities is characterized by comprising,

a sensor configured to be directly or indirectly connected to an article for detecting whether the article is removed;

a cable operatively connected to the sensor, the cable containing at least one metal fiber wire configured to carry a detection signal on the sensor and/or provide a sensing circuit for detecting the article;

the security device is configured to trigger the security device to issue a security signal when the cable is broken and/or the article of merchandise is illegally removed from the sensor.

2. The security device of claim 1, wherein said cable comprises at least two wires, wherein at least one of said wires comprises a metal fiber wire.

3. A security device for merchandise theft prevention according to claim 1 wherein said metal fiber wire comprises a plurality of strands of metal fibers having a diameter of 30 μm or less.

4. A security device for merchandise theft prevention according to claim 3 wherein said metal fibers are of a material selected from at least one of lead, copper, aluminum, stainless steel.

5. The security device of claim 1, wherein the cable is configured as at least one of a straight line, a spring line, and a retractable cord reel.

6. A security device for the theft of merchandise, as claimed in claim 1, wherein said sensor is provided with an indicator light to indicate the operative condition.

7. A security device for the theft of an article as recited in claim 1, wherein the sensor includes a connector configured to be connectable to the article for detecting the removal of said article.

8. The security device of claim 7, wherein the connector comprises a common connector for digital products such as MicroUSB, TypeC, Lightning, etc.

9. The security device of claim 7, wherein the connector has a fastener configured to fasten the connector to the article.

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