JPH09115063A - Burglar preventing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent illegal action such as shoplifting. SOLUTION: This device has a 1st contact 33 planted on an upper case 24 while having elasticity, 2nd contact 34 provided while being fixed onto a lower case 25 so as to abut on the 1st contact 33 when the upper case 24 is closed, and rib 35 having inclination with which the 1st contact 33 slides while abutting on it, on the rear side of a battery storage case 32, is provided. Thus, even if a person trying to steal commodities disassembles the burglar preventing device 21 or cuts off the supply of power from a battery 31 while using a tool, by the contact of the 1st and 2nd contacts 33 and 34, an alarm is issued and the illegal action is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antitheft device attached to a product for use in order to prevent theft due to shoplifting or the like.

[0002]

2. Description of the Related Art FIG. 5 is a system diagram of a conventional antitheft device. In FIG. 5, reference numeral 1 denotes an anti-theft device, which is used to attach the anti-theft device 1 to a product 2 and prevent the product 2 from being stolen. When the antitheft device 1 is removed from the product 2, the release tool 3 is inserted into the antitheft device 1 to release the detection conductor wire 4. This anti-theft device 1 has a housing 7 having an upper case 5 and a lower case 6, and a detecting means 8, a detecting conductor wire 4 connected to the detecting means 8 and a hook for locking the detecting conductor wire 4. 9
Alarm means 10 which is activated by an open signal output from the detection means 8, a battery 11 for supplying power to the alarm means 10, and a battery storage case 12 for storing the battery 11.
And had. Then, when an attempt is made to steal the product 2, the alarm means 10 is activated by the radio wave of the transmitter 13.

[0003]

However, in such a conventional structure, a person who tries to steal the product 2 disassembles the upper case 5 and the lower case 6 of the anti-theft device 1 by using a tool or the like. Battery storage case 12 is disassembled and battery 11
It has been considered that the product is stolen after the function of the anti-theft device 1 is stopped by cutting off the power supply from the device.

The present invention solves such problems, and an object of the present invention is to provide an anti-theft device which can prevent such illegal acts.

[0005]

In order to achieve this object, the detection means of the anti-theft device of the present invention comprises a resilient first contact embedded in the upper case and the upper case when the upper case is closed. A second contact fixedly provided in the lower case so as to come into contact with the first contact, and a rib having an inclination provided so that the first contact comes in contact with and slides behind the battery housing case. And when the battery housing case is brought into contact with a predetermined location in the housing, the first contact and the second contact are opened, and the upper case is opened, or the battery housing When the case is removed from the predetermined place,
The first contact and the second contact are brought into contact with each other again to output an opening signal toward the alarm means, thereby preventing fraudulent activity.

[0006]

According to the configuration of the first aspect of the present invention, even if a person who wants to steal goods uses a tool or the like to disassemble the upper and lower cases of the antitheft device, or to store the battery. Even if the case is pulled out and the power supply from the battery is cut off to stop the function of the anti-theft device, the first contact and the second contact come into contact with each other to output an open signal. Since the alarm is issued from the means, illegal activities such as stealing goods can be prevented.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an essential part of an anti-theft device according to an embodiment of the present invention, FIG. 2 is a system diagram using the anti-theft device of the present invention, and FIG. FIG.

In FIG. 2, reference numeral 21 is an antitheft device according to the present invention. The anti-theft device 21 of the present invention unjustly destroys the anti-theft device 21 when detecting a radio wave of a specific frequency by the transmitting antenna 22 or unjustly removing the anti-theft device 21 from a managed product 23. Then, when trying to stop the function, it is a device that notifies that an abnormal situation has occurred with a loud sound.

In FIGS. 1, 2 and 3, the structure of the antitheft device 21 of the present invention has the following components housed in a housing 20 having an upper case 24 and a lower case 25. That is, the detection means 26 for detecting reception of a radio wave of a specific frequency
And a detection conductor wire 27 connected to the detection means 26,
A hook 28 for locking the detection conductor wire 27, a leaf spring 29 for further locking the hook 28, an alarm means 30 activated by an opening signal output from the detection means 26, and an electric power to the alarm means 30. Battery 31 to be supplied and this battery 3
1 and a battery storage case 32 for storing 1. Then, as shown in FIG.
A first contact 33 having elasticity and a second contact 3 fixed to the lower case 25 so as to come into contact with the first contact 33 when the upper case 24 is closed.
4 and the first contact 3 at the rear of the battery storage case 32.
3 has a slanted rib 35 provided so as to abut and slide. Then, when the battery storage case 32 is brought into contact with a predetermined location of the lower case 25 in the housing 20, the first contact 33 and the second contact 34 are opened. Then, the upper case 24
When the battery storage case 32 is opened or when the battery storage case 32 is removed from the predetermined location, the first contact 33 and the second contact 34 contact again, and an open signal is output to the alarm means 30. It is supposed to do. Therefore,
Even if a person who wants to steal the product uses a tool or the like to disassemble the upper case 24 and the lower case 25 of the anti-theft device 21, pull out the battery storage case 32, and shut off the power supply from the battery 31. Even if the function of the anti-theft device 21 is to be stopped, the first contact 33 and the second contact 34 come into contact with each other to output an open signal, and the open signal outputs the alarm means 3
Since an alarm is issued from 0, it is possible to prevent illegal activities such as stealing the product 23.

Here, a normal method of using the anti-theft device 21 will be described. When the anti-theft device 21 is attached so that the product 23 is not stolen in FIG. 2, the detection conductor wire 27 is passed through the hole 23a of the product 23, the loop at the tip of the detection conductor wire 27 is hooked on the hook 28, and then the hook. By pushing 28, the hook 2 is attached to the leaf spring 29.
8 is locked. In this way, the anti-theft device 21 is attached to the product 23. When the product 23 with the anti-theft device 21 is stolen out of the specific area, the anti-theft device 21 receives a specific radio wave transmitted by a transmitting antenna 22 installed outside the area, and is shown in FIG. The detection means 26 for detecting the theft is activated, and the alarm means 30 gives an alarm. In this way theft is prevented. Also, within the specific area, the anti-theft device 21
Even if the detection conductor wire 27 is illegally removed from the product 23 by cutting it with a knife or the like, the detection means 26 detects that the detection conductor wire 27, which is electrically connected, is always opened. Then, an opening signal is issued to the alarm means 30 and the alarm means 30 is activated. This prevents fraud. Even if the detection conductor wire 27 is forcibly pulled, the detection conductor wire 27 is cut before the hook 28 and the leaf spring 29 are broken. Since the hook 28 and the leaf spring 29 are designed with sufficient strength as described above, they can be detected by the detection means 26 and can inform the theft of the product 23.

When it is desired to stop the anti-theft device 21 that has been ringing for some reason, or to turn off the power supply because it will not be used for a long time, a dedicated release tool 36 is used to turn off the power switch in the anti-theft device 21. Press to turn off the power. Of course, this special release tool 3
It is also possible to turn on the power by 6.

Further, by removing the battery storage case 32, the battery 31 such as a coin type battery can be replaced.

Then, the fitting portion between the upper case 24 and the lower case 25 is disassembled, or the battery housing case 32 is pulled out and the battery 3
The assembling of the anti-theft device that shuts off the power supply from the device 1, stops the function of the anti-theft device 21 and prevents the possibility of stealing the product 23 will be described in detail below.

At the assembly stage of the anti-theft device 21, the first contact 33 made of an elastic body shown in FIG.
Make sure it is firmly fixed to. On the other hand, a battery housing case 32 is held in the lower case 25 so as to be slidable only in a direction perpendicular to the fitting direction of the upper case 24 and the lower case 25. The battery case 32 has the first contact terminal 3 when the upper case 24 and the lower case 25 are fitted together.
A rib 35 having a triangular inclination is provided at a portion where 3 abuts. First, the substrate 37 having the detection means 26 mounted therein is placed inside the lower case 25. Further, the hook 28, the leaf spring 29, the alarm means 30, and the battery 31 shown in FIG. 3 are mounted. Next, the upper case 24 and the lower case 25 are assembled and fitted. At this time, the first contact 33 of FIG. 1 is in contact with the second contact 34 provided on the substrate 37 up to the middle thereof. However, immediately before fitting, the first contact 33 hits the rib 35 and is deformed. When the fitting is completed, the first contact point 33 slides on the triangular inclined surface of the rib 35, and the assembly is completed while the first contact point 33 is completely separated from the second contact point 34. .

Anti-theft device 2 assembled in this way
When attempting to replace the battery 31 stored in the battery storage case 32 by sliding the battery storage case 32 of No. 1 outward from the housing 20, the battery storage case 32
The rib 35 provided on the first slide 33 also slides and the first contact 33 returns to its original shape. Then, it comes into contact with the second contact 34. When the first contact 33 comes into contact with the second contact 34 and is short-circuited in the circuit, an open signal is output by the detection means 26 and the alarm means 30 is activated to issue an alarm. Even if the upper case 24 and the lower case 25 are about to be disassembled, the rib 3
Since 5 is provided in the battery storage case 32, the first contact 33 tries to return to its original shape and comes into contact with the second contact 34 to issue an alarm.

Further, the battery housing case 32 is provided with a plus contact terminal 38 and a minus contact terminal 39 for obtaining electricity from the housed battery. From the + contact terminal 38 and the-contact terminal 39 through the pattern 40 formed on the substrate 37 on which the battery housing case 32 slides, the detection means 2
6 is transmitted to the board 37 on which the alarm unit 30 and the alarm unit 30 are mounted. In the antitheft device 21 of the present invention, the battery storage case 3
The battery 2 can be supplied with power from the battery 31 when it is stored in a predetermined place, when it is opened, and during the process. That is, the pattern 40 having a length equal to or larger than the length by which the battery storage case 32 moves in parallel is formed. Therefore, even if the battery storage case 32 is opened, the alarm can be continuously issued without interruption of the power supply.

Further, a concave portion 41 forming an engaging portion is provided at the end of the battery housing case 32. And
The hook 28 is provided with a convex portion 42 that engages with the concave portion 41. When the anti-theft device 21 is attached to the product 23, the convex portion 42 of the hook 28 engages with the concave portion 41 of the battery storage case 32. Therefore, the battery storage case 32 cannot be taken out without releasing the hook 28. The battery 3 is stored in the battery storage case 32 taken out.
When it is desired to replace item 1, the leaf spring 29 holding the hook 28 is released by the release tool 36, and the hook 28 is released.
Then, after removing the product 23, the battery storage case 3
By pressing the lock portion (provided on the upper case 24) 43 that locks the battery 2, the battery storage case 32 slides out of the anti-theft device 21, and the battery 31 can be replaced. .

With this structure, the antitheft device 2 of the present invention is provided.
In 1, the hook 28 also serves as a lock device for the battery storage case 32, and therefore it is not necessary to provide a special fixing means to the battery storage case 32 to ensure security. Therefore, security is ensured while contributing to the reduction in size and weight of the anti-theft device 21. Moreover, when replacing the battery, the battery 31 can be easily replaced with the product 23 removed.

The first contact 33 has a battery housing case 32.
A discharge lever 44 made of an elastic body such as a leaf spring for discharging is provided. The discharge lever 44 is urged to discharge the battery storage case 32 to the outside of the housing 20. As a result, the battery storage case 32 becomes the upper case 24.
At the moment when the lock portion 43 locked to is pushed down, the battery storage case 32 is automatically slid and discharged from the antitheft device 21, and the battery 31 can be easily replaced.

Further, as shown in FIG. 4, the battery storage case 32 may be constructed on a plate whose one end is fixed to the lower case 25 without sliding the battery storage case 32. At this time, the battery storage case 32 is connected to the lower case 25 by the hinge 45, so that the battery storage case 32 can rotate about the hinge 45. The rib 35 tends to separate from the first contact 33 when the battery storage case 32 makes a rotational motion, and the rib 35 completely separates from the first contact 33 when opened near 90 °. And the 1st contact 33 and the 2nd contact 34 contact. When the housing 20 is to be disassembled, the first contact 33 and the second contact 34 are also formed as described above.
Comes into contact with and issues an alarm.

As described above, according to this embodiment, a person who wants to steal goods uses a tool or the like to prevent theft 21.
Even if the upper case 24 and the lower case 25 are disassembled or the battery storage case 32 is pulled out to shut off the power supply from the battery 31 to stop the function of the anti-theft device 21,
When the first contact point 33 and the second contact point 34 come into contact with each other, the alarm means 30 sounds and the theft can be prevented.

[0022]

As described above, the detection means of the anti-theft device of the present invention abuts on the elastic first contact implanted in the upper case and the first contact when the upper case is closed. The second contact fixedly provided in the lower case, and the rib having an inclination provided so that the first contact abuts and slides on the rear side of the battery storage case. When the battery storage case is brought into contact with the predetermined location, the first contact and the second contact are opened, and the upper case is opened, or the battery storage case is detached from the predetermined location. At this time, the first contact and the second contact again come into contact with each other, and an opening signal is output to the alarm means, so that even a person who tries to steal the product may use a tool or the like. Disassembled the upper and lower cases of the anti-theft device Even if the battery storage case is pulled out and the power supply from the battery is cut off to stop the function of the anti-theft device, the first contact and the second contact come into contact with each other to output an open signal. From the alarm means,
Since an alarm is issued, illegal activities such as stealing goods can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of essential parts of an anti-theft device according to an embodiment of the present invention.

FIG. 2 is a system diagram using this anti-theft device.

FIG. 3 is a plan view of the same anti-theft device.

FIG. 4 is a perspective view of essential parts of an anti-theft device according to another embodiment.

FIG. 5: System diagram using a conventional anti-theft device

[Explanation of symbols]

 20 Case 21 Anti-Theft Device 24 Upper Case 25 Lower Case 26 Detecting Means 27 Detecting Conductor Wire 28 Hook 30 Alarm Means 31 Battery 32 Battery Storage Case 33 First Contact Point 34 Second Contact Point 35 Rib 41 Recessed Section of Battery Lid 43 Lock Part 44 Discharge lever

Claims (5)

[Claims] 1. A housing having an upper case and a lower case,
A detecting means and a detecting conductor wire connected to the detecting means,
A hook for locking the detection conductor wire, an alarm means activated by an opening signal output from the detection means, a battery for supplying electric power to the alarm means, and a battery storage case for storing the battery, The detection means includes a first elastic contact pointed in the upper case and a second fixed point fixed to the lower case so as to abut the first contact point when the upper case is closed. A contact and a rib having an inclination provided so that the first contact abuts and slides behind the battery storage case, and the battery storage case is brought into contact with a predetermined place in the housing. When the first contact and the second contact are opened to open the upper case, or when the battery storage case is removed from the predetermined location, the first contact and the second contact are opened. The contacts of the Anti-theft device for outputting an opening signal toward. 2. The anti-theft device according to claim 1, wherein the battery storage case is provided with an engaging portion, and the hook engages with the engaging portion when the hook is attached to prohibit detachment of the battery storage case. 3. The antitheft device according to claim 1, wherein the first contact is provided with a discharge lever made of an elastic body that abuts on the rear side of the battery storage case. 4. The antitheft device according to claim 1, wherein a pattern is formed on the substrate in the sliding direction of the battery storage case, and the power output from the battery storage case is transmitted to the substrate through the pattern. . 5. The antitheft device according to claim 1, wherein a part of the upper case or the lower case rotates around a hinge, and a battery storage case is attached to this part.