JP4703395B2 - Anti-theft device - Google Patents

Description

  The present invention relates to an antitheft device for electrical products, and more particularly to an antitheft device capable of preventing resale after theft.

  As a conventional antitheft device, for example, in Patent Document 1, a piezo sensor coaxial cable is used for a wire portion, a pressure due to cutting or destruction of the wire portion is detected as a large voltage, and a buzzer sounds at theft by generating an alarm. A wire lock device that can be expected to give up the crime has been proposed.

For example, in Patent Document 2, an approximately rectangular slit (mounting hole) is provided on the outer wall of a device such as a personal computer, and an attachment mechanism that is operated by a key is attached to the slit, and the cable of the attachment mechanism cannot be moved. An anti-theft device (kensington lock type anti-theft device) that is attached to the device has been proposed. As presented in this Patent Document 2, electrical products such as notebook personal computers and projection projectors are preliminarily dedicated to products so that a Kensington lock type antitheft device that is generally available can be attached. A mounting hole was equipped.
Registered Utility Model Publication No. 3100257 Patent Publication No. 2650147

  Conventionally, mass retailers of electric products, large supermarkets, etc. have suffered from shoplifting and other thefts, and there has been a concern that the stolen products will be resold. However, the Kensington lock type anti-theft device that has been widely used in mass retailers, etc. can be released only by breaking the key part, and can be easily removed after the key part is broken. Therefore, the risk of being stolen is high and the anti-theft effect is small. In addition, after removing the Kensington lock type anti-theft device, the appearance of the product purchased by the usual method is the same, so it is not possible to distinguish the stolen product from the purchased product, and it is easy to resell the stolen product. It was. As described above, the conventional antitheft device is a device for the purpose of preventing theft to the last, and has no effect of preventing the resale of the stolen product.

  In addition, devices such as conventional personal computers are equipped with dedicated mounting holes for Kensington lock type anti-theft devices, but customers need to purchase expensive Kensington lock type anti-theft devices separately. was there. For this reason, for example, when a large number of notebook personal computers are purchased at a school or the like, there is a problem that an economic burden is large. In order to deal with such problems, there were cases where cheap commercial keys were attached as anti-theft devices, or cheap commercial keys were combined with Kensington lock-type anti-theft devices. The effect was small, and there was no effect on preventing resale after theft.

  The present invention has been made in order to improve the above-described problems, and has an object of providing an inexpensive anti-theft device that has a large anti-theft effect and can prevent resale after being stolen. And

  The anti-theft device according to the present invention comprises a detachable part formed on a part of the outer member and a peripheral part of the outer member surrounding the detachable part, and the detachable part is coupled to the peripheral part via a thin part. The anti-theft device is configured such that a hook is disposed on the outer surface side of the detachable portion, and a display board is disposed on the inner surface side of the detachable portion so as to face the detachable portion. The outer peripheral part of the arm is joined to the surrounding part, and when the tensile force exceeding the breaking stress of the thin part is applied to the hook, the removable part is detached from the surrounding part together with the hook, and the display board is exposed. It is what.

  According to the present invention, since the anti-theft device is preliminarily installed on the outer shell member of the product, the customer does not need to purchase the anti-theft device separately, and the economic burden is reduced. In addition, when the tensile force exceeding the breaking stress of the thin part is applied to the hook, the releasable part is detached from the surrounding part and the display panel is exposed, which is different from the appearance of the product purchased by the usual method. It is clear that it is a product. Therefore, resale after theft is difficult, and an antitheft effect and a resale prevention effect are obtained.

Embodiment 1 FIG.
Hereinafter, an antitheft device for a projection projector according to Embodiment 1 of the present invention will be described with reference to the drawings. 1A is a top view showing an antitheft device according to Embodiment 1 of the present invention, FIG. 1B is a cross-sectional view taken along line bb in FIG. 1A, and FIG. (C) is sectional drawing of the part shown by the cc line in Fig.1 (a). 2A is a top view showing a key mark portion of the antitheft device according to the first embodiment, and FIG. 2B is a cross-sectional view taken along line bb in FIG. 2A. FIG. 2 and FIG. 2C are cross-sectional views taken along line cc in FIG. In the drawings, the same and corresponding parts are denoted by the same reference numerals and description thereof is omitted.

  The first embodiment is an antitheft device for an electric product, for example, a projection type projector. The electrical product according to the first embodiment includes an outer member 1 that constitutes the appearance of the product. The outer member 1 includes a detachable portion 2 and a peripheral portion 10 that surrounds the detachable portion 2. The outer member 1 is a plate member and is made of plastic, for example. The outer member 1 has an outer surface 1a and an inner surface 1b, and is formed with a predetermined thickness T.

  The detachable portion 2 is formed on a part of the outer member 1. The detachable portion 2 is formed as a key mark portion 2A having a predetermined shape, for example, a key mark shape. Of course, the shape of the detachable portion 2 is not necessarily required to be the key mark portion 2A, and may be other shapes. The key mark portion 2A has a rectangular key body shape portion 2e and a key arm shape portion 2a on one side of the key body shape portion 2e.

  The key body shape portion 2e is coupled to the peripheral portion 10 by thin portions 2c formed at four locations on the entire circumference. As shown in FIG. 1B, the thin portion 2c has a thin thickness that is approximately 1/3 or less of the thickness T of the outer member 1, and breaks when it receives a tensile force that exceeds its cross-sectional fracture stress. Configured as follows. A separation groove 2b penetrating the outer shell member 1 is formed on the entire circumference of the key body shape portion 2e excluding the thin portion 2c. The separation groove 2b is formed on the entire circumference of the key body shape portion 2e except for the thin portion 2c, and extends between the key body shape portion 2e and the peripheral portion 10.

  The key arm shape portion 2a is drawn with a contour groove that is sufficiently shallower than the wall thickness T of the outer shell member 1, for example, and this key arm shape portion 2a can be broken even if the thin portion 2c breaks. Absent. The key arm shape portion 2a can be printed on the outer surface 1a of the outer member 1 with a predetermined color and displayed.

  A hook 3 is arranged on the outer surface 1a side of the key mark portion 2A. The hook 3 is composed of a part different from the key mark portion 2A that is a part of the outer shell member 1, and is provided so as to be movable with respect to the key mark portion 2A. The key body shape portion 2e of the key mark portion 2A is provided with hook holes 2d for attaching the hooks 3 at two locations. The hook 3 is fitted with a spring 4 after the hook leg portion 3a is inserted into the hook hole portion 2d from the outer surface 1a side of the key mark portion 2A, and the nut 5 which is a fixing means from the inner surface 1b side of the outer shell member 1 The hook screw 3b is held so as not to drop off.

  The spring 4 attached to the hook leg portion 3 a is provided to house the hook 3 in the key mark portion 2 A, that is, the inside of the outer member 1, and is attached so as not to fall off by the nut 5. . Due to the spring 4, the hook 3 is usually in a state where most of the hook 3 is housed inside the key mark portion 2A, as shown in FIG. The hook 3 can be pulled out from the key mark portion 2A. In the pulled-out state, the hook 3 has a hook opening 3c that allows a rope member (not shown) for binding the product, that is, the projection type projector to pass therethrough. Yes.

  Further, a display board 6 is arranged on the inner surface 1b side of the key mark part 2A so as to face the key mark part 2A, and the outer peripheral part of the display board 6 is joined to the peripheral part 10. FIG. 3 is a top view showing the display board of the antitheft device according to the first embodiment. As shown in FIG. 3, the adhesive member 6a is attached to the outer periphery of the display board 6, and it adhere | attaches on the inner surface 1b side of the surrounding part 10 by this adhesive member 6a.

  In addition, nut holes 6 b are formed at two locations in the center of the display plate 6. When the key mark portion 2A is detached from the peripheral portion 10 together with the hook 3, the hook leg portion 3a, the spring 4, the nut 5, and the hook screw portion 3b of the hook 3 pass through the nut hole portion 6b of the display plate 6 and are detached. Accordingly, the display board 6 remains on the outer member 1 (product main body) while being joined to the peripheral member 10, and the key mark portion 2A and the hook 3 are detached from the peripheral portion 10 together with the spring 4, the nut 5, and the hook screw portion 3b. .

  Further, the display board 6 has a caution statement 6 c that is visually recognized after the key mark portion 2 </ b> A is detached from the peripheral portion 10 of the outer member 1. In the first embodiment, the caution sentence 6c “Please confirm the password” is shown as an example. However, an arbitrary caution sentence (warning sentence) can be written on the display board 6. For example, a warning message such as “This product is a stolen product” may be used.

  Hereinafter, the operation of the antitheft device according to the first embodiment will be described with reference to FIGS. 4 and 5. FIG. 4 is a diagram for explaining the operation of the antitheft device according to the first embodiment. FIG. 4 (a) is a top view, and FIG. 4 (b) is a line bb in FIG. 4 (a). FIG. 4C is a cross-sectional view of the portion indicated by the line cc in FIG. 4A. FIG. 5 is a top view showing the outer member after the key mark portion is detached from the surrounding portion.

  When using the antitheft device according to the first embodiment, first, as shown in FIG. 4, the hook 3 is pulled out from the key mark portion 2A, and the projection projector as a product is bound to the hook opening 3c. The rope member 7 is attached to a non-movable object. As the rope member 7, a material that cannot be easily cut or damaged, for example, a metal wire is used. The other end of the rope member 7 is usually connected to a product display shelf or the like as seen in a mass retailer of electrical products.

  In this way, in the projection type projector that is bound and fixed, someone moves the product, that is, the outer member 1 for the purpose of theft, and causes the rope member 7 and the hook 3 to have the cross-sectional fracture stress of the thin portion 2c of the key mark portion 2A. When a tensile force exceeding the value is applied, the thin portion 2c of the key mark portion 2A is damaged, and the key body shape portion 2e is detached from the peripheral portion 10 of the outer member 1 together with the hook 3. At this time, the spring 4, the nut 5, and the hook screw portion 3b are also detached from the peripheral portion 10.

  After the key body shape portion 2e of the key mark portion 2A is detached, the display board 6 is exposed from the key mark opening portion 22 which is a rectangular hole formed in the peripheral portion 10 as shown in FIG. The notice 6c “Please confirm” is visually recognized. For this reason, when the projection type projector provided with the anti-theft device according to the first embodiment is stolen, it is clear that it is a stolen product unlike the appearance of a product purchased by a normal method.

  The cross-sectional fracture stress of the thin portion 2c that joins the key mark portion 2A and the surrounding portion 10 is arbitrarily set by changing the thickness, area, installation position, and number of installation of the thin portion 2c. In the first embodiment, the thin-walled portions 2c are provided at four locations on the entire circumference of the key body shape portion 2e. However, the number of thin-walled portions 2c is not limited to four, but one or a plurality of locations. Should be provided. The cross-sectional fracture stress of the thin portion 2c increases as the thickness of the thin portion 2c increases, the area increases, and the number of installations increases. In order to increase the anti-theft effect, it is better to remove the key mark portion 2A with a small tensile force. However, if it is set so as to be removed too easily, the store side or the customer side needs to be careful when handling them. It is desirable to appropriately determine the cross-sectional fracture stress of the thin portion 2c in consideration of the above.

  In the first embodiment, the spring 4 is used to house the hook 3 in the key mark portion 2A of the projection type projector. However, the hook 3 is located on the key mark portion 2A, that is, on the outer surface 1a side of the outer member 1. When it does not matter if it protrudes, the spring 4 may not be used. In the first embodiment, the adhesive member 6a is used to join the display board 6 to the inner surface 1a of the peripheral portion 10, but it may be attached using other members such as screws instead of the adhesive member 6a. Good.

  As described above, according to the first embodiment, since the projection type projector is equipped with the anti-theft device in advance, the customer does not need to purchase the anti-theft device separately, and the economic burden is reduced. . Further, when a tensile force exceeding the cross-sectional fracture stress of the thin-walled portion 2c is applied to the hook 3, the key mark portion 2A is detached from the surrounding portion 10, the display board 6 is exposed, and the caution statement 6c is visually recognized. It can be widely known that it is a product, and the effect of preventing resale is great. The fact that the resale prevention effect is great means that the theft prevention effect is great. For these reasons, according to the first embodiment, it is possible to provide an inexpensive antitheft device that has a large antitheft effect and can prevent resale after theft.

  Further, the key body shape part 2e of the key mark part 2A is coupled to the peripheral part 10 through the thin part 2c at a plurality of locations on the entire circumference thereof, so that the thickness, area, installation position and installation of the thin part 2c By changing the number, the cross-sectional fracture stress of the thin portion 2c can be arbitrarily set. Thereby, it can be set to the cross-sectional fracture stress according to a customer's purpose and application, and it is possible to obtain a desired antitheft effect.

  Further, since the hook 3 is formed of a separate part from the key mark portion 2A and is provided so as to be movable with respect to the key mark portion 2A, most of the hook 3 is placed inside the key mark portion 2A (outer member 1). It can be stored, and the appearance as a product is not impaired, and handling is not difficult.

Embodiment 2. FIG.
In the first embodiment, the hook 3 of the anti-theft device is configured as a part separate from the key mark portion 2A and is provided so as to be movable with respect to the key mark portion 2A. However, the hook 3 is housed inside the outer member 1. When it is not necessary, the hook 3 and the key mark portion 2A can be formed integrally to form a simple structure.

  FIG. 6 is a cross-sectional view showing an anti-theft device according to Embodiment 2 of the present invention. In the second embodiment, the hook 33 is formed integrally with the key mark portion 2A so as not to be housed inside the outer shell member 1 of the projection type projector. Therefore, compared to the first embodiment, parts such as the spring 4, the nut 5, and the hook screw portion 3b are not necessary, and it is not necessary to provide the hook hole portion 2 in the outer member 1, and the display plate 6 has a nut. There is no need to provide the hole 6b. Since other configurations and operations are the same as those in the first embodiment, the description thereof is omitted.

  According to the second embodiment, since the hook 3 is integrally formed with the key mark portion 2A, a cheaper antitheft device can be obtained with a small number of parts, and the same antitheft effect as in the first embodiment. And a resale prevention effect.

It is the top view and sectional drawing which show the antitheft device in Embodiment 1 of this invention. It is the top view and sectional drawing which show the key mark part of the antitheft device in Embodiment 1 of this invention. It is a top view which shows the display board of the antitheft device in Embodiment 1 of this invention. It is the top view and sectional drawing explaining operation | movement of the antitheft device in Embodiment 1 of this invention. It is a top view which shows the outer member after the key mark part of the antitheft device in Embodiment 1 of this invention remove | deviated from the surrounding part. It is sectional drawing which shows the antitheft device in Embodiment 2 of this invention.

Explanation of symbols

1 outer member, 1a outer surface, 1b inner surface, 2 detachable part, 2A key mark part,
2a Key arm shape part, 2b Separation groove, 2c Thin wall part, 2d Hook hole part,
2e Key body shape part, 3, 33 hook, 3a hook leg part, 3b hook screw part,
3c hook opening, 4 spring, 5 nut, 6 display board, 6a adhesive member,
6b Hole for nut, 6c Caution statement, 7 Rope member, 10 Surrounding part,
22 Key mark opening.

Claims (7)

An anti-theft device comprising a detachable part formed on a part of the outer member and a peripheral part of the outer member surrounding the detachable part, wherein the detachable part is coupled to the peripheral part via a thin part There,
A hook is disposed on the outer surface side of the detachable portion, and a display plate is disposed on the inner surface side of the detachable portion so as to face the detachable portion. It is joined to the surrounding area,
The theft characterized in that the hook is applied with a tensile force exceeding the breaking stress of the thin-walled portion, so that the detachable portion is detached from the surrounding portion together with the hook, and the display board is exposed. Prevention device.   2. The anti-theft device according to claim 1, wherein the detachable part is coupled to the peripheral part through the thin part at a plurality of locations around the entire periphery.   The antitheft device according to claim 1, wherein the breaking stress of the thin portion is arbitrarily set by changing the thickness, area, installation position, and number of installation of the thin portion. .   2. The anti-theft device according to claim 1, wherein the hook is composed of a part different from the detachable portion.   5. The antitheft device according to claim 4, wherein the hook is provided so as to be movable with respect to the detachable portion.   2. The antitheft device according to claim 1, wherein the hook is formed integrally with the detachable portion.   2. The anti-theft device according to claim 1, wherein the display board has a warning text or a caution text that is visually recognized after the detachable portion is detached.

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