JP3098161B2 - Anti-theft device - Google Patents

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 for protecting an exhibit in a store from shoplifting.

[0002]

2. Description of the Related Art Conventionally, this kind of anti-theft device is shown in FIG.
It is configured as shown in FIG. The product storage unit 2 is attached to the anti-theft device main body 1, and the product 3 to be protected is stored and used inside the product storage unit 2.

The anti-theft device main body 1 has an alarm device operating switch 7 mounted on a switch mounting wall 6 in a side wall of a rectangular case 5 having a built-in alarm device 4. A back plate 8 is attached to one end of the case 5. Have. The product storage section 2 is formed by bending a thin acrylic resin sheet into a U-shape, and has both ends adhered to a pair of opposed side walls 9 sandwiching the switch mounting wall 6 of the case 5 via a double-sided adhesive tape or the like. I have. Product 3 to be protected
Are stored so as to overlap the switch mounting wall 6 of the case 5 and push the sensing lever of the switch 7 down to the far end of the product storage section.

When the product 3 to be protected is removed from the product storage section 2 during display, the detection lever of the switch 7 protrudes, the alarm device 4 issues an alarm, and the product 3 to be protected enters the product storage section 2. If carried away, the alarm device 4 detects a radio wave emitted only near the exit of the store and issues an alarm.

[0005]

In such a conventional configuration, the size of the product storage section 2 is made according to the size of the product 3 to be protected, and the product 3 to be protected is large like a compact disk device. No problem occurs in the case of unified standardized products having a fixed size. However, when there is a gap between the product 3 to be protected and the product storage unit 2, the product 3 to be protected is stored in the product storage unit 2. The switch 7 temporarily stops detecting the commodity storage section 2 even though it is settled, and a malfunction that the alarm device 4 generates an alarm occurs.

Therefore, at present, it is required to prepare a plurality of types of anti-theft devices in which the size of the product storage section 2 is adapted to the size of each product to be protected. This structure is not suitable for the protection target product 3 whose packaging boxes are not uniform in size, such as software.

[0007] An object of the present invention is to provide an anti-theft device capable of protecting a commodity 3 having an irregular size from a fraudulent act.

[0008]

The anti-theft device according to the present invention comprises a case body for accommodating a product to be protected, and a case covered on one end of the case body so as to cover an opening of the case body. It is attached to the lid, one of the case body and the case lid, and the sliding length between the case body and the case lid is less than the specified value.
And an alarm device for detecting the occurrence of the alarm and generating an alarm.

[0009]

[0010]

According to this configuration, the case body and the case lid
The products to be protected will be displayed in the enclosed space. Case
If you try to open the opening of the
Slide the cover in the opening direction, and the sliding contact length between them is specified.
Generates an alarm when the alarm device detects that the value has fallen below the value.
I do.

[0011]

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. 1 to 5 show a first embodiment.

The anti-theft device is as shown in FIGS.
It comprises a case body 11, a case cover 12, and an alarm device 4 attached to the case cover 12. Reference numeral 3 denotes a product to be protected which is put in the case body 11 and protected.

The case body 11 and the case lid 12 are formed of a translucent acrylic resin. The alarm device 4 is adhered to the outer surface of the case lid 12, as shown in FIGS. The sensing lever 13 of the switch of the alarm device 4 is urged by a spring (not shown) in the projecting direction, and the sensing lever 13 projects inward through a hole 17a formed in the case lid 12.

As shown in FIG. 4, in the display state in which the case lid 12 is placed over the opening of the case main body 11 in which the product 3 to be protected is placed, as shown in FIG. It comes into contact with the case body 11 and is pushed inside the alarm device 4.

The characters, pictures, photographs, and the like written on the surface of the product to be protected 3 on display are opened and removed without opening the case cover 12.
Observable through.

When the customer attempts to remove the case lid 12, when the sensing lever 13 of the switch of the alarm device 4 stops contacting the case body 11, the sensing lever 13 projects and an alarm is generated.

When the attendant takes out the product 3 to be protected from the case main body 11, a special release pin (not shown) is inserted into a release hole 14 formed in the alarm device 4, and the alarm device 4 is inserted.
Is released, the case lid 12 is removed.

As described above, the case body 11 and the case lid 1
Since the product 3 to be protected is stored in the space surrounded by 2 and the sensing lever 13 of the alarm device 4 monitors the contact state with the case body 11, the product 3 to be protected is smaller than the case body 11. Even if it is inserted, reliable operation can be expected.

In addition, when storing the protection target product 3 having substantially the same outer dimensions as the inner size of the case main body 11, the bottom of the case main body 11 and the upper surface of the case lid 12 are provided so that the protection target product 3 can be easily taken in and out. , An air vent hole 15 is formed.

When the alarm device 4 is attached to the case lid 12, the sensing lever 13 is attached close to the opening end of the case lid 12, and the case lid 12 is moved in the opening direction with respect to the case body 11. The configuration is such that the sensing lever 13 does not protrude when slightly slid, which helps reduce the occurrence of false alarms.

FIG. 6 shows a second embodiment. In this embodiment, minute projections 16a and 16b for reducing the contact area are integrally formed on the outside of the case body 11 and the inside of the case lid 12, respectively. Other parts are the same as in the first embodiment.

Since the minute projections 16a and 16b are formed in this manner, even when the case lid 12 is repeatedly attached and detached, abrasion scarcely occurs in the sliding contact portion between the case main body 11 and the case lid 12, and even when the case is stored repeatedly even after repeated use. Consideration is made so that characters, pictures, photographs, and the like written on the surface of the protection target product 3 are not difficult to see.

Further, in the second embodiment, the minute projections 16a and 16b are formed on the case body 11 and the case lid 12, and the minute projections 16a are inclined with respect to the sliding direction of the case lid 12 (the direction of arrow A). doing. Further, since the direction of the inclination of the minute projection 16b is inclined in the opposite direction to the direction of the minute projection 16a, the sliding contact point between the case main body 11 and the case lid 12 is set to the tip of the minute projections 16a and 16b. This significantly reduces the occurrence of scratches due to the attachment and detachment of the case lid 12.

FIGS. 7 and 8 show a third embodiment. In this embodiment, the alarm device 4 is attached to the case body 11 side, and the sensing lever 13 of the alarm device 4 is attached to the case body 1.
1 is in contact with the inside of the case lid 12 via a hole 17b formed in the case. The window 1 is placed on the upper surface of the case lid 12 at a position corresponding to the alarm device 4 with the case 1 covered.
8a is drilled.

With such a configuration, the customer can use the case lid 1
When the user attempts to remove the cover 2, the detection lever 13 protrudes when the detection lever 13 of the switch of the alarm device 4 does not contact the case lid 12, and an alarm is generated.

When the attendant takes out the product 3 to be protected from the case main body 11, a special release pin is inserted into the release hole 14 of the alarm device 4 from the window 18a of the case lid 12, and the alarm device 4 is inserted.
Is released, the case lid 12 is removed.

In the third embodiment, when the alarm device 4 is mounted on the case main body 11, the sensing lever 13 is mounted close to the opening end of the case main body 11, and When the case lid 12 is slightly slid in the opening direction, the sensing lever 13 is configured not to protrude, which helps to reduce the occurrence of false alarms.

FIG. 9 shows a fourth embodiment. In this embodiment, the alarm device 4 is mounted near the bottom of the case body 11, and the sensing lever 13 of the alarm device 4 contacts the inside of the case lid 12 through a hole 17 b formed in the case body 11. In contact. A window 18b is formed in the bottom of the case body 11 at a position corresponding to the alarm device 4.

Further, the case lid 12 covers the vicinity of the bottom of the case body 11. With this configuration, when the customer attempts to remove the case lid 12, the detection lever 13 protrudes when the detection lever 13 of the switch of the alarm device 4 stops contacting the case lid 12, and an alarm is generated. I do.

When the attendant takes out the protection target product 3 from the case body 11, the special release pin is inserted into the release hole 14 of the alarm device 4 from the window 18b of the case body 11 to release the alarm operation of the alarm device 4. Then, the case lid 12 is removed.

FIG. 10 shows a fifth embodiment. In this embodiment, the case cover 12 covers the vicinity of the bottom of the case body 11, and the alarm device 4 is attached to the case cover 12. Others are the same as the above-mentioned embodiment.

The above third embodiment, fourth embodiment, and fifth embodiment
In the embodiment, the outer peripheral surface of the case body 11 and the case lid 12
On the inner peripheral surface of the microscopic projections 16a, which are seen in the second embodiment,
16b was not formed, but the minute protrusions 16a, 1
By forming 6b, the occurrence of abrasion due to attachment / detachment of case lid 12 can be similarly reduced.

In the above embodiments, the minute projections 16a, 16b are formed on the outer peripheral surface of the case body 11 and the inner peripheral surface of the case lid 12.
Is formed, but the minute protrusions 16a are provided on the case main body 11 and the minute protrusions 16b are not formed on the case lid 12,
Alternatively, even in a configuration in which the minute protrusions 16b are provided on the case lid 12 and the minute protrusions 16a are not formed on the case body 11, compared with the case in which the minute protrusions 16a and 16b are not formed as in the first embodiment. In addition, the occurrence of scratches due to the attachment and detachment of the case lid 12 can be reduced.

In each of the above-described embodiments, the portion of the anti-theft device for accommodating the item to be protected has been described. However, the anti-theft device includes a device that emits radio waves only near the exit of the store, as in the prior art. When the product 3 to be protected is taken away with the product storage unit 2 inserted, the alarm device 4 detects the radio wave emitted only near the exit of the store and issues an alarm. Has a built-in receiving circuit.
The radio waves referred to here include radio waves in a high-frequency range [100 kHz to microwave] used for general wireless communication, and other low-frequency induction electromagnetic fields.

[0036]

According to the first aspect of the present invention, the case body for accommodating the product to be protected and the opening of the case body are covered.
A casing cover which is put on one end of the sea urchin case body, attached to one of the case body and the case lid, and the case body
Detects that the sliding length with the case lid has fallen below the specified value
An alarm device that generates an alarm, and stores and displays the products to be protected in a space surrounded by the case body and the case lid. , And reliable operation with no false alarm can be expected.

[0037]

According to the first aspect of the present invention, minute projections for reducing the contact area are formed on at least one of the outer peripheral surface of the case main body and the inner peripheral surface of the case lid at a sliding contact point between the case main body and the case lid. In addition, a first minute projection for reducing a contact area which is inclined with respect to a sliding direction between the case body and the case lid is formed on an outer peripheral surface of the case body, and a first minute projection is formed on an inner peripheral surface of the case lid. By forming the second minute projection inclined in the opposite direction to the above, the occurrence of abrasion on the case body, the case cover, the case body and the case cover can be reduced even by repeating the attachment and detachment of the case cover. The target product can be displayed in a good condition.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a first embodiment of the antitheft device of the present invention.

FIG. 2 is a sectional view of the embodiment.

FIG. 3 is a perspective view of a case lid to which the alarm device of the embodiment is attached.

FIG. 4 is a perspective view of the display example of the embodiment.

FIG. 5 is a cross-sectional view of the display example of the embodiment.

FIG. 6 is a perspective view of a second embodiment.

FIG. 7 is a perspective view of a display state of the third embodiment.

FIG. 8 is a sectional view of the embodiment.

FIG. 9 is a sectional view of a display state of the fourth embodiment.

FIG. 10 is a sectional view of a display state of the fifth embodiment.

FIG. 11 is a perspective view of a conventional anti-theft device.

[Explanation of symbols]

 3 protection target product 4 alarm device 11 case body 12 case lid 13 sensing lever 16a, 16b micro projection

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 64-28161 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G08B 13/00-13/26

Claims (4)

(57) [Claims] 1. A case body for accommodating a product to be protected,
At one end of the case body to cover the opening of the case body
It is attached to the case lid and one of the case body and the case lid, and the sliding contact length between the case body and the case lid is regulated.
An anti-theft device provided with an alarm device that detects that the value has become lower than a predetermined value and generates an alarm. 2. The sliding contact between the case body and the case lid
At least one of the outer peripheral surface of the case body and the inner peripheral surface of the case lid
Claims wherein a micro-projection for reducing the contact area is formed on one side.
1. The anti-theft device according to 1 . 3. The sliding contact between the case body and the case lid,
On the outer surface of the case body, slide the case body
1st minute for contact area reduction inclined with respect to the
A projection is formed, and a first minute projection is formed on the inner peripheral surface of the case lid.
Forming a second minute projection inclined in the opposite direction.
Anti-theft device as described . 4. A device that emits radio waves only near the exit of a store.
The alarm device has a sliding contact between the case body and the case lid.
Detects that the length has fallen below the specified value and issues an alarm
And the length of sliding contact between the case body and case lid is specified.
When the radio wave is not detected in
2. The anti-theft device according to claim 1, wherein the alarm is generated upon detection .