JPH10232983A - Anti-theft equipment - Google Patents

Abstract

(57) [Problem] To provide a small, low-cost and highly reliable anti-theft device for use in anti-theft devices such as prevention of shoplifting of products. SOLUTION: A power supply operation contact 22 of a power supply operation means 13 and a first attachment detection contact 20 and a second attachment detection contact 20 of an attachment detection means 15 are provided.
Are integrally formed. As a result, the mounting space can be reduced and the anti-theft device 11 can be reduced in size, the component cost can be reduced as compared with a case where each contact is a separate switch, and the mounting cost can be further reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-theft device used in an anti-theft device for preventing shoplifting of goods.

[0002]

2. Description of the Related Art Anti-theft devices currently in practical use include:
As shown in FIG. 3, an electromagnetic wave is transmitted from the monitoring antenna 100 into a predetermined area, and the antitheft device 101 attached to the article 1 monitored by the monitoring antenna 100 receives the electromagnetic wave transmitted from the monitoring antenna 100. When the anti-theft device 101 detects that the anti-theft device 101 has entered a predetermined area, the anti-theft device 101 issues an alarm with a buzzer sound or the like.

[0003] Further, in areas other than the predetermined area, the anti-theft device 1 is used.
In order to prevent unauthorized removal of the device 1 and the removal of the article 1, when the anti-theft device 101 is detected to be removed improperly, the anti-theft device 101 also issues an alarm with a buzzer sound or the like. Was.

The anti-theft device 101 receives an electromagnetic wave transmitted from the monitoring antenna 100 and detects the intrusion of the anti-theft device 101 into a predetermined area.
An attachment detecting means 104 for detecting the attachment to the article 1; a receiving means 103; an alarm means 105 connected to the attachment detecting means 104 for issuing an alarm;
3, a power supply 102 for supplying operation power to the attachment detection means 104 and the alarm means 105, and a power supply operation means 10 connected to the power supply 102 and for supplying or interrupting operation power.
And 6.

The operation of the antitheft device configured as described above will be described below. First, as shown in FIG. 3, the attachment 1 is attached to the article 1 such that the attachment detection contact 110 of the attachment detection means 104 of the anti-theft device 101 is pressed and brought into contact. The attachment method includes an anti-theft device 101 attached to the article 1.
Or a method of attaching a double-sided adhesive tape to the mounting surface of the anti-theft device 101 and attaching the double-sided adhesive tape to the article 1.

A battery is used as a power supply 102 for supplying operating power to the anti-theft device 101. The power supply operation means 106 for supplying or interrupting the operation power supply from the power supply 102 includes a power supply operation contact 112 and a lock unit 113 for holding the power supply operation contact 112 in a connected state.
When the switch 12 is turned on, the lock unit 113 keeps the switch on. When the receiving means 103 is turned on, the receiving means 103 is energized and becomes capable of receiving. The attachment detecting means 104 is also energized to be in a state where the removal of the anti-theft device 101 from the article 1 can be detected.

On the other hand, a monitoring antenna 100 installed at an outlet of a store, for example, an outlet of a retail store, transmits an electromagnetic wave of a specific frequency to a predetermined area.

If the user attempts to take out the article 1 from the exit while the anti-theft device 101 is attached, the electromagnetic wave of a specific frequency transmitted from the monitoring antenna 100 is transmitted to the coil of the receiving means 103 built in the anti-theft device 101. 11
4 and the capacitor 115 receive the signal, and the received signal turns on the transistor 117 via the diode 116. Transistor 11
When the transistor 7 is turned on, the transistor 118 is turned on, power is supplied from the collector of the transistor 118 to the alarm means 105, and the buzzer 119 of the alarm means 105 emits an alarm sound by self-excited oscillation. Further, the collector output of the transistor 118 is connected to the transistor 117 via the resistor 120, and the ON state of the transistor 117 is maintained. Therefore, even if the anti-theft device 101 moves away from the predetermined area and cannot receive the electromagnetic wave transmitted from the monitoring antenna 100, the alarm sound is continuously emitted. That is, the monitoring person is notified that the article 1 is taken out to the exit without permission.

The power supply operating means 1 of the anti-theft device 101
06 without turning off the power supply operation contact 112
Even when the device 1 is illegally removed from the article 1, the base of the transistor 117 is pulled up by the resistor 121 by turning off the attachment detection contact point 110 of the attachment detection means 104, and the transistor 117 is turned on. Hereafter, an alarm sound is emitted as in the case of reception.

In such an anti-theft device, since the anti-theft device 101 is attached to each of a large number of articles 1 in a store, the anti-theft device 101 is reduced in size so that the anti-theft device 101 can be attached to a small article 1. It is desired. It is also desired that the anti-theft device 101 be inexpensive to reduce the cost of introducing the anti-theft device.

[0011]

However, the antitheft device 101 having such a conventional structure has a power operation contact 112 for supplying or interrupting the operation power and an attachment detection contact 11.
Two switches of 0 were required. Further, since the power supply operation contact 112 and the attachment detection contact 110 are not electrically connected, independent switches are used. Therefore, the antitheft device 101 becomes expensive due to the component cost of the two switches and the mounting cost thereof. Further, since a large mounting space is required, there is a problem that the anti-theft device 101 becomes large.

As a method of increasing the detection capability of the anti-theft device 101 against unauthorized removal from the article 1, there is a method of providing a plurality of attachment detecting contacts 110. However, a switch is required, and the anti-theft device 101 becomes larger. There was a problem that it became expensive.

It is an object of the present invention to provide a small, inexpensive and highly reliable anti-theft device with a small and simple contact structure.

[0014]

In order to achieve this object, an antitheft device according to the present invention comprises an operation switch in which a power supply operation contact of a power supply operation means and an attachment detection contact of an attachment detection means are integrated. The configuration is as follows.

Thus, a small, inexpensive and highly reliable antitheft device can be provided.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is an anti-theft device attached to an article, wherein the anti-theft device receives an electromagnetic wave transmitted from a monitoring antenna and moves it into a predetermined area. Receiving means for detecting the intrusion of the object, an attachment detecting means for detecting that it is attached to the article, and when connected to the receiving means and the attachment detecting means and invades a predetermined area or is removed from the article. Alarm means for generating an alarm, a power supply for supplying operation power to the reception means, the attachment detection means, and the alarm means, and a power supply operation means connected to the power supply and for supplying or shutting off the operation power supply. The power supply operation contact of the power supply operation means and the attachment detection contact of the attachment detection means are anti-theft devices formed by an integral operation switch. By the body structure, it can be to reduce the mounting space compact anti-theft device. Also, by integrating the power supply operation contact and the mounting detection contact as compared with the case where they are separate, the component cost can be reduced and the mounting cost can be reduced.

According to a second aspect of the present invention, there is provided the anti-theft device according to the first aspect, wherein each contact of the operation switch is formed by a pair of leaf springs disposed substantially in parallel. Is formed by a pair of simple leaf springs, so that the structure is simple, so that troubles are reduced and the cost of parts is reduced.

According to a third aspect of the present invention, there is provided the anti-theft device according to the first aspect, wherein one contact terminal of the power supply operation contact is electrically connected to one contact terminal of the mounting detection contact. In addition, there is no need to connect another connection wire between the power supply operation contact and the mounting detection contact, and the antitheft device has a simple structure.

According to a fourth aspect of the present invention, there is provided a power supply operation contact,
The leaf spring to which power is supplied when the power is turned on forms one of a pair of leaf springs of the attachment detection contact.
This is the anti-theft device described above, and one leaf spring of each contact can be formed by one spring material, so that the operation switch can have a simple structure.

According to a fifth aspect of the present invention, there is provided the attachment detecting means,
The anti-theft device according to claim 1, wherein the anti-theft device has a plurality of mounting detection contacts. Since the mounting detection contacts can be mounted at different positions of the article, the unauthorized removal of the anti-theft device from the article is detected. Reliability can be improved.

According to a sixth aspect of the present invention, at least one of the power supply operation contact and the attachment detection contact has a slider movable in a direction different from the pressing direction of the leaf spring. A rib for pressing at least one of the leaf springs to turn on the contacts is provided, and the other contact has a pin movable in the same direction as the pressing direction of the leaf spring. The anti-theft device according to claim 2, wherein one of the two is pressed to turn on the contact, and has an effect of improving the operability of the anti-theft device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the anti-theft device of the present invention, which comprises a monitoring antenna, an anti-theft device, and a release key. The anti-theft device also includes a detailed circuit thereof.

In FIG. 1, 1 is an article, 10 is a monitoring antenna, 11 is an anti-theft device, and 17 is a release key. The anti-theft device 11 is composed of more detailed elements. That is, 12 is a power supply built in the anti-theft device 11, 13 is a power supply operating means, 14 is a receiving means, 15 is an attachment detecting means,
Numeral 16 denotes alarm means, each of which has a circuit configuration as indicated by a dotted line.

The power supply operation means 13 has a power supply operation contact 22 and comprises a power supply contact terminal 22a and a power supply contact terminal 22b. The power contact terminal 22a and the power contact terminal 22b are leaf springs, and are disposed so as to face each other substantially in parallel. The first attachment detection contact 20 of the attachment detection means 15 includes an attachment contact terminal 20a and an attachment contact terminal 20b. The mounting contact terminal 20a and the mounting contact terminal 20b are plate springs and are substantially parallel to each other, and the ends thereof are bent so that the mounting contact terminal 20a and the mounting contact terminal 20b come into contact with each other. Second attachment detection contact 21 of attachment detection means 15
The mounting contact terminal 21a and the mounting contact terminal 21b are formed of a leaf spring and are substantially parallel to each other. Are in contact with each other. The power contact terminal 22a, the mounting contact terminal 20a, and the mounting contact terminal 21a are in an electrically connected state, and can be formed as one metal part.

The details of the anti-theft device configured as described above will be described below. First, as shown in FIG. 1, the attachment contact terminal 20b of the attachment detection contact 20 of the attachment detection means 15 of the anti-theft device 11 is connected to the attachment contact terminal 20b.
Is pressed down by the first sticking pin 23 which moves in the same direction as the pressing direction of the contact point, the mounting contact terminal 20a and the mounting contact terminal 20b are brought into a non-contact state, and the other mounting detecting contact 21
Is pressed down by the second sticking pin 24 that moves in the same direction as the pressing direction of the mounting contact terminal 21b.
The mounting contact terminal 21a and the mounting contact terminal 21b are attached to the article 1 such that both are in a non-contact state. The attachment method includes winding the anti-theft device 11 around the article 1 with tape,
There is a method of attaching a double-sided adhesive tape to a mounting surface of the anti-theft device 11 and mounting the anti-theft device 11 on the article 1.

A power supply operation means 13 for supplying or interrupting the operation power supply from the power supply 12 includes a power supply operation contact 22 and a slider 26 for operating the power supply operation contact 22 from outside the case 25 of the anti-theft device 11. , Power operation contact 22
The lock portion 27 holds the slider 26 at a position where the slider 26 is turned on. When the slider 26 is pushed into the case 25, the power contact terminal 2 is formed by the rib 26 a of the slider 26.
2a and the power contact terminal 22b come into contact with each other, and the operating power is supplied. The slider 26 is held by the lock portion 27 while the power supply operation contact 22 is in the ON state.

Mounting contact terminal 20a and mounting contact terminal 21a
Are electrically connected to the power contact terminal 22a. Therefore, the attachment contact terminal 20a, the attachment contact terminal 21a, and the power contact terminal 22a can be formed by one leaf spring member.

The operating direction of the slider 26 can be different from the pressing direction of the first sticking pin 23 and the second sticking pin 24. Thereby, the first attaching pin 2
By arranging the third and second sticking pins 24 on the sticking surface of the anti-theft device 11 and arranging the slider 26 on, for example, the side surface of the anti-theft device 11, it is easy even after the anti-theft device 11 is attached to the article 1. The power can be turned on. Therefore, even if the attachment contact terminal 20a, the attachment contact terminal 21a, and the power supply contact terminal 22a are formed into a flat shape by one leaf spring member and slide in the same direction, the operation of the power supply is not affected.

The receiving means 14 is energized and becomes capable of receiving. The attachment detecting means 15 is also energized to be in a state where removal of the anti-theft device 11 from the article 1 can be detected.

On the other hand, from the monitoring antenna 10 disposed at the exit of the store, an electromagnetic wave of a specific frequency is transmitted to a predetermined area such as the exit of a retail store.

If the user attempts to take out the article 1 with the anti-theft device 11 attached thereto from the exit, the electromagnetic wave of a specific frequency band transmitted from the monitoring antenna 10 is received by the receiving means 14 built in the anti-theft device 11. An LC parallel resonance circuit including the coil 30 and the capacitor 31 receives the signal, and the received signal turns on the transistor 33 via the diode 32. When the transistor 33 is turned on, the transistor 34 is turned on, power is supplied from the collector of the transistor 34 to the alarm means 16, and the buzzer 40 of the alarm means 16 emits an alarm sound by self-excited oscillation. Further, the collector output of the transistor 34 is connected to the transistor 33 via the resistor 35, and keeps the ON state of the transistor 33. Therefore, even if the anti-theft device 11 moves away from the predetermined area and cannot receive the electromagnetic wave transmitted from the monitoring antenna 10, the alarm sound is continuously emitted. That is, the monitoring person is notified that the article 1 is taken out to the exit without permission.

The power supply operating means 13 of the anti-theft device 11
When the anti-theft device 11 is illegally removed from the article 1 without turning off the power contact terminals 22a and 22b, at least one of the attachment contact terminals 20a and 21a of the attachment detection means 15 is connected to the first attaching pin 23. Alternatively, the second attaching pin 24
, And the mounting contact terminals 20a and 20b
Alternatively, the mounting contact terminal 21a and the mounting contact terminal 21b come into contact, and the base of the transistor 34 becomes low level,
The transistor 34 is turned on, and emits an alarm sound in the same manner as in the reception.

Further, if the first sticking pin 23 and the second sticking pin 24 are arranged at different places on the sticking surface of the anti-theft device 11, both pins are pushed in so as not to sound an alarm. It is difficult to remove it as it is,
The anti-theft effect can be enhanced.

When the operating power is cut off, the release key 17
To release the lock portion 27 and move the slider 26 to a position where the power operation contact 22 is turned off. When shutting off the alarm sound, the operation power is shut off by the same operation. FIG. 1
Is a resistor.

Next, the mechanism of the anti-theft device 11 of the present invention will be described with reference to FIG. FIG. 2 is an external perspective view showing the operation switch 50 in the anti-theft device 11 of the present invention.

In FIG. 2, reference numeral 50 denotes an operation switch. The operation switch 50 includes the power supply operation means 13 and the attachment detection means 15. This operation switch 50
Consists of a main spring 52, a power supply contact terminal 22b, a mounting contact terminal 20b, a mounting contact terminal 21b, and an insulating holding material 51 for holding these spring materials.

The main spring 52 is substantially flat and T-shaped, and comprises a plate spring having conductivity and a board connection terminal 52a integrally formed with the main spring 52. Each tip of the T-shaped leaf spring functions as a power supply contact terminal 22a, a mounting contact terminal 20a, and a mounting contact terminal 21a.

The power contact terminal 22b is a leaf spring disposed substantially parallel to the power contact terminal 22a of the main spring 52, and has a board connection terminal 53. When the slider 26 is moved to the terminal side (direction A) along the guide 28, the power contact terminal 22a is pushed down along the rib 26a and comes into contact with the power contact terminal 22b.

The mounting contact terminal 20b is a leaf spring disposed substantially in parallel with the mounting contact terminal 20a of the main spring 52, and is bent halfway along its entire length to come into contact with the mounting contact terminal 20a. The first sticking pin 23 is in contact with the tip of the mounting contact terminal 20 b having the board connecting terminal 54, and presses the first sticking pin 23 against the sticking surface of the anti-theft device 11. When the anti-theft device 11 is stuck to the article 1 and the first sticking pin 23 is pressed down, the mounting contact terminal 20b descends and comes into a non-contact state with the mounting contact terminal 20a of the main spring 52.

The mounting contact terminal 21b is a leaf spring disposed substantially in parallel with the mounting contact terminal 21a of the main spring 52, and is bent halfway along its entire length to come into contact with the mounting contact terminal 21a. A second sticking pin 24 is in contact with the tip of the mounting contact terminal 21b having the board connection terminal 55 (not shown in FIG. 2), and the second sticking pin 24 is attached to the sticking surface of the antitheft device 11. I'm pushing. The anti-theft device 11 is attached to the article 1 and the second attaching pin 24
Is depressed, the mounting contact terminal 21b is lowered, and is brought into a non-contact state with the mounting contact terminal 21a of the main spring 52.

As described above, according to the present embodiment, as shown in FIG. 1, the power supply operation contact 22 of the power supply operation means 13 and the first attachment detection contact 20 and the second attachment detection contact of the attachment detection means 15 are provided. The integrated structure of the contact 21 has an effect that the mounting space can be reduced and the anti-theft device 11 can be downsized. In addition, the power supply operation contact 22, the first attachment detection contact 20, and the second attachment detection contact 21 are advantageous in that the component cost is lower than in the case of separate switches, and the mounting cost can be reduced.

Further, as shown in FIG.
Are constituted by a pair of leaf springs arranged substantially in parallel, and there is an effect that the operation switch 50 can have a simple structure.

One power supply contact terminal 22a of the power supply operation contact 22 is connected to the mounting contact terminal 20a of the first mounting detection contact 20 and the mounting contact terminal 2a of the second mounting detection contact 21.
1a, and is electrically connected to the operation switch 5
There is an effect that 0 can have a simple structure.

Further, the power supply operating contact 22 is a plate spring to which power is supplied when the power is turned on.
It is configured such that one of the pair of leaf springs of the 0 and the second attachment detection contacts 21 is formed, and one leaf spring of each contact can be formed by one spring material. There is an effect that the structure can be made simple.

Since the attachment detecting means 15 is provided with a plurality of attachment detecting contacts, the article 1 of the anti-theft device 11 is provided.
This has the effect of increasing the reliability of detecting unauthorized removal from the device.

One of the power supply operating contacts 22 has a slider 26 movable in a direction different from the pressing direction of the leaf spring, and the slider 26 pushes down the power contact terminal 22a of the leaf spring by its movement. A rib 26a for turning on the contact is provided, and the first attachment detection contact 20 and the second attachment detection contact 21 are provided with a first attaching pin 23 and a second attachment detection movable movable in the same direction as the pressing direction of the leaf spring. Since the contact pins 24 are attached and the attachment contact terminals 20b and the attachment contact terminals 21b are pushed down to turn on the contacts by the movement of the pins, the slider 26 is pushed after the anti-theft device 11 is attached to the article 1. Thus, the power operation can be easily performed, and the operability of the anti-theft device 11 is improved.

[0047]

As described above, according to the present invention, the anti-theft device is configured such that the power supply operation contact of the power supply operation means and the attachment detection contact of the attachment detection means are formed as an integrated operation switch. This has the effect that the mounting space can be reduced and the anti-theft device can be downsized. Also, the component cost is lower than in the case where the power supply operation contact, the first attachment detection contact, and the second attachment detection contact are separate switches, and furthermore,
There is an effect that mounting cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram of an anti-theft device including a detailed circuit of an anti-theft device according to an embodiment of the present invention;

FIG. 2 is a perspective view of an operation switch of the anti-theft device.

FIG. 3 is a block diagram of an anti-theft device including a detailed circuit of a conventional anti-theft device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Article 10 Monitoring antenna 11 Anti-theft device 12 Power supply 13 Power supply operation means 14 Receiving means 15 Attachment detection means 16 Alarm means 20 First attachment detection contact 21 Second attachment detection contact 22 Power supply operation contact 50 Operation switch

Claims (6)

[Claims] 1. An anti-theft device attached to an article, wherein the anti-theft instrument receives an electromagnetic wave transmitted from a monitoring antenna and detects intrusion into a predetermined area, and is attached to the article. Attachment detecting means for detecting that the receiving means, the receiving means and the attachment detecting means and an alarm means for issuing an alarm when intruding into a predetermined area or when detached from the article, the receiving means and A power supply for supplying operation power to the attachment detection means and the alarm means; and a power supply operation means connected to the power supply and supplying or shutting off the operation power supply. An anti-theft device formed by an operation switch having a unitary detection contact point of the means. 2. The anti-theft device according to claim 1, wherein each contact of the operation switch is formed by a pair of leaf springs arranged substantially in parallel. 3. The anti-theft device according to claim 1, wherein one contact terminal of the power supply operation contact is electrically connected to one contact terminal of the attachment detection contact. 4. The anti-theft device according to claim 1, wherein the power supply operating contact has a leaf spring to which power is supplied when the power is turned on, forms one of a pair of leaf springs of the attachment detecting contact. 5. The anti-theft device according to claim 1, wherein the attachment detecting means includes a plurality of attachment detection contacts. 6. A slider which is movable in a direction different from a pressing direction of a leaf spring on one of the power supply operation contact and the mounting detection contact, and at least one of the leaf springs is moved to the slider by the movement. A rib for pressing down to turn on the contact is provided, and the other contact has a pin movable in the same direction as the pressing direction of the leaf spring, and the movement of this pin depresses one of the leaf springs. 3. The anti-theft device according to claim 2, wherein the contact is turned on.