JP2007284102A - Lock mechanism for rental case for dvd or the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock mechanism for a rental case that prevents a DVD or the like stored in it from being stolen and excels in durability. <P>SOLUTION: A pair of swingable lock pawls 12a and 12 are pivotally supported at a predetermined interval on the lock part 10 of a lock plate 3. Between the lock pawls 12a and 12b, a swingable lever 14 is pivotally supported on a shaft disposed in an eccentric position. Small gaps 17a and 17b are defined so that the leading end pawls 16a and 16b of the lock pawls 12a and 12b swing and move downward to be locked in the leading end of the swing lever 14. At the basal ends 22a and 22b of the lock pawls 12a and 12b, the leading end pawls 16a and 16b are projected from the upper face 18 of the lock part 10 of a lock plate by applying an elastic force, and by application of the magnetic forces of the magnets 20a and 20b, the leading end pawls 16a and 16b of the lock pawls 12a and 12b are moved downward to be unlocked from the lock parts 8a and 8b formed on the case. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lock mechanism for a rental case that can protect DVDs, CDs, game software, and the like displayed on a shelf of a rental shop from theft.

  The same is true for videotapes, but when DVDs are arranged directly on display shelves in the store as cases, they are often stolen. Of course, an anti-theft tag sticker is attached to the DVD rental case, and a system is employed in which an alarm sounds when the anti-theft gate passes at the store entrance. However, if the tag sticker is peeled off, the anti-theft gate will not detect the alarm even if it is taken out.

  Therefore, a lock plate is inserted into the rental case containing the DVD, and the rental case is locked so as not to open, and the tag seal is attached to the lock plate. The rental cases are arranged on display shelves in the store in a state where they are put in another display case. The customer can take out the rental case from the display case and bring it to the store counter for rent. At this time, the store clerk takes a predetermined procedure and hands over the rental case containing the DVD to the customer, but it must be unlocked so that the DVD can be taken out from the rental case.

  A “rental case for DVDs or the like having an anti-theft function” according to Japanese Patent No. 3459997 is a rental case for DVDs or the like having an anti-theft function so that the DVDs displayed on the shelves in the store are not stolen. The rental case consists of a main body case with a gusset that fits in the center hole of a DVD, etc., and a lid that closes the main body case, and slides a lock plate with a tag seal that the alarm device detects from the side opening of the case into the lock plate insertion space. In order to prevent the lid from being opened by fitting it in, it is structured so as to mesh with each other and lock, and the side edge of the lock plate is provided with a claw protruding outward from the case, and a leaf spring that is bent and deformed around the base, The leaf spring is provided with a lock claw so that the leaf spring is locked with a locking portion formed on the case so that the leaf spring does not come off. So that the locking plate by pulling the pawl is withdrawn by unlocking from the locking portion.

  Therefore, a magnet is used to remove the lock claw from the engaging portion, and the lock claw is pulled to the magnet side using the magnetic force of the magnet to remove it from the engaging portion, and in that state, the lock plate (lock plate) is slid. Can be removed. Here, the tag sticker is stuck on the lock plate, and if the rental case is taken out without being removed, the security device installed at the doorway detects and issues an alarm.

  By the way, every time a DVD or the like is lent out, the lock plate is removed, and the returned rental case is fitted with the lock plate again and placed on the display shelf. As described above, since the lock plate is frequently put in and out, the lock claw and the locking portion are damaged. In particular, the locking portion provided in the lending case made of polypropylene may be worn or damaged when the lock claw is locked. If this happens, the lock function will not work and the lock plate will be removed.

On the other hand, some customers use a magnet to remove the lock plate in order to steal a DVD or the like. If the lock plate is removed, the security device at the entrance and exit will not react and can be taken out easily.
"DVD rental case with anti-theft function" according to Japanese Patent No. 3459997

  As described above, the conventional locking mechanism for locking a rental case such as a DVD has the above-described problems. The problem to be solved by the present invention is this problem, and provides a lock mechanism for a rental case that can be locked safely and has excellent durability.

  The lending case locking mechanism according to the present invention functions so that the lending case does not open by inserting a lock plate into the lending case. The lending case accommodates a DVD, a CD, or the like. A tag seal that reacts to an alarm device (security device) installed at the doorway is attached to the lock plate. The rental case includes a main body case and a lid, and the lid has a structure that can be opened and closed via a joint portion. The lid can be closed to cover the main body case and store a DVD or the like.

  By the way, two lock claws that swing about the shaft are attached to the lock plate as a pair, and a rocking lever is provided between the two lock claws. These lock claw and swing lever are made of a magnetic material that is attracted by a magnet. Then, a locking portion for locking the lock claw is provided on the lending case side, and the lock claw is locked to the locking portion by inserting the lock plate into the lending case, and is locked so as not to be pulled out even when pulled. In the present invention, in order to improve the durability of the locking portion, it is mainly made of metal.

  The lock claw is pivotally supported and can swing, but an elastic force (spring force) is urged on the base side so that the tip claw protrudes and can be locked to the locking portion. When the tip of the lock claw is pulled by the magnetic force of the magnet, the tip claw is retracted and separated from the locking portion on the case side, and the lock plate can be pulled out. When the lock claw is retracted by the action of magnetic force, the tip claw is engaged with both ends of the swing lever.

  In the rental case for DVDs and the like of the present invention, a lock plate for locking the lid is inserted, and the lid cannot be opened unless the lock plate is removed. Two lock claws are swingably attached to the lock plate at a predetermined interval, and if the lock plate is inserted into the lock plate space of the lending case, the tip claw formed on the tip side of the lock claw is Locked by locking to the locking portion on the case side.

  Therefore, when the lock plate is pulled out to open the lid, the lock claw is drawn by bringing the magnet into contact with or close to the lending case, and the tip claw is released from the locking portion. The lock claw that is pivotally supported is rocked by the magnetic force of the magnet, and the tip claw is released. Here, two magnets are used to draw the tip claw of the two lock claws in a pair. The lock claw cannot be released with a long continuous magnet.

  A swing lever attached between both lock claws can regulate the movement of both lock claws. In other words, since the shaft of the swing lever is provided at an eccentric position on one side, when the long magnet is brought close to the lending case, the swing lever is swung so that the lock claw on the lowered side is locked. The claw of the front end is retreated and released from the locking portion, but the lock claw on the raised side cannot be retreated and is not released from the locking portion. Of course, in the case of a short (small) magnet, only the other lock claw can be released.

  The lock mechanism of the present invention has a great effect in preventing theft because both lock claws cannot be released unless two magnets separated by a predetermined distance are brought close to the lending case. If the rental case is taken out from the store without removing the lock plate, the tag sticker attached to the lock plate reacts to the alarm device. Furthermore, since the engaging portion is made of metal, the engaging portion does not wear or break even when the lock plate is put in and out as much as possible, and is a lock mechanism with excellent durability.

  FIG. 1 is an embodiment showing the appearance of a DVD rental case equipped with an antitheft function according to the present invention. In FIG. 1, 1 is a main body case, 2 is a lid, and the lid 2 is attached to the edge of the main body case 1 so as to be openable and closable. A DVD is accommodated in the main body case 1, and a navel 6 provided so as to protrude from the center of the main body case 1 is fitted into a hole of the DVD and attached. By the way, the DVD is accommodated in the main body case 1 and the lid 2 is closed. In this state, the DVD is placed in a display case (not shown) and arranged on a shelf in the store.

  Since the display case has a title sheet, the customer can take out the rental case containing the DVD from the display case and carry it to the counter for rent. By the way, in the rental case of the present invention, since the lid 2 is locked so that the DVD cannot be removed by opening the lid 2, the lock is unlocked and lent at the counter. That is, since the lid 2 is locked by closing the lid 2 of the rental case and inserting the lock plate 3 from the opening 4 of the main body case 1, the lock plate 3 is pulled out when renting out. .

  FIG. 2 is an embodiment showing the internal structure of the rental case according to the present invention with the lid 2 opened. The main body case 1 is provided with a space for accommodating a DVD and a space for inserting the lock plate 3, and a navel 6 protrudes from the center of the DVD accommodating space 5 so as to fit in the center hole of the DVD. ing. This navel 6 is the same as the conventional CD case.

  The lock plate 3 slides into one lock plate insertion space 7 and is locked so that the lid 2 does not open. That is, the main body case 1 and the lid 2 are connected to each other via the lock plate 3, and the lid 2 cannot be opened. The lock plate 3 inserted into the lock plate insertion space 7 from the opening 4 is locked with the completion of the insertion, and cannot be removed unless unlocked by the unlocking tool.

  For this purpose, locking portions 8a and 8b are provided on the inner surface of the lock portion insertion space 19 which is a part of the lock plate housing space 7 of the lid 2 and into which the lock portion 10 constituting the lock plate 3 is fitted. The lock claw of the inserted lock plate 3 can be locked. At the same time, the lid 2 is not opened by the inserted lock plate 3. FIG. 3 shows a specific example of the lock plate 3. The lock plate 3 has a flat plate portion 9 and a lock portion 10, the lock portion 10 extends from the base portion 11, and the flat plate portion 9 is formed halfway through the lock portion 10. Has been.

  By the way, the lock portion 10 is provided with two lock claws 12a and 12b. The lock claw 12a is pivotally supported by the shaft 13a, and the lock claw 12b is pivotally supported by the shaft 13b. A swing lever 14 is pivotally supported by a shaft 15 between the lock claws 12a and 12b. Both ends of the swing lever 14 are notched to leave gaps 17a, 17b between the front claws 16a, 16b of the lock claws 12a, 12b.

  Part of the claw 16a, 16b of the lock claw 12a, 12b protrudes from the upper surface 18 of the lock portion 10. That is, since the base side of the lock claws 12a and 12b is pressed by the resin spring with the force P, the tip claws 16a and 16b always protrude from the upper surface 18. Of course, if the tip claws 16a and 16b are pressed or pulled by the magnetic force of the magnet, the tip claws 16a and 16b can be retracted (lowered) against the elastic force of the resin spring.

  FIG. 4 shows a case where the lock plate 3 is locked in the rental case. (a) is a front view, (b) shows the latching | locking part 8a, 8b attached to the lid | cover 2. FIG. The locking portions 8a and 8b are attached to the surface of the partition portion of the lock portion insertion space 19 of the lock portion 10 of the lock plate 3 formed on the lid 2 as shown in FIG. The front claws 16a and 16b of the lock claws 12a and 12b can be locked to the locking portions 8a and 8b. Therefore, it cannot be removed even if the lock plate 3 is pulled. Locking portions 8a and 8b in the figure are U-shaped metal parts, and are attached in a state of being inserted from the surface of the lid 2.

  FIG. 5 is a schematic view showing the state of the lock claws 12 a and 12 b of the lock plate 3. (a) This is a case where the lock plate 3 is fitted and locked in the rental case, and the lock claws 12a and 12b are locked to the locking portions 8a and 8b. In (b), the tips claw 16a and 16b of the lock claw 12a and 12b are pulled down by the magnets 20a and 20b, and are released from the locking portions 8a and 8b. Therefore, the lock plate 3 can be pulled out.

  In this case, the lock claws 12a, 12b swing around the shafts 13a, 13b, the base side rises, and the resin springs 21a, 21b are bent and deformed. (c) is a case where the lock plate 3 is pulled out, and when the pulling force by the magnets 20a, 20b is lost, the tip claw is raised again by the spring force of the resin springs 21a, 21b.

  FIG. 6A shows the lock claw 12a of FIG. 5B. The tip claw 16a of the lock claw 12a is lowered by the magnetic force of the magnet 20a, hits the tip of the swing lever 14, and conversely, the base 22a rises to bend the resin spring 21a. FIG. 6B shows the lock claw 12a of FIG. When the magnetic force of the magnet 20a is lost, the base 22a is lowered and the tip claw 16a is raised by the action of the resin spring 21a.

  By the way, when pulling out the lock plate, the two magnets 20a and 20b are used so as to act only on the two lock claws 12a and 12b separated by a predetermined distance. That is, the release tool 23 in which the magnets 20a and 20b are arranged at the same positions as the lock claws 12a and 12b is used. Even if an attempt is made to pull out the lock plate 3 using a magnet for the purpose of theft, if it is a small magnet, only one lock claw 12a or 12b is drawn, and the other claw 12b or 12a has a tip claw 16b or 16a remains locked to the locking portions 8a and 8b, and the lock plate 3 cannot be pulled out.

  The lock mechanism of the present invention cannot be released by lowering the tip claws 16a and 16b of the lock claws 12a and 12b even when the magnet is large. That is, the swing lever 14 pivotally supported at the eccentric position is pulled by the magnet and swings, and the right side having a long distance from the shaft 15 is lowered as shown in FIG. Therefore, the tip claw 16b of the right lock claw 12b is lowered and released from the locking portion, but the tip claw 16a of the left lock claw 12a is raised.

  Therefore, the lock plate 3 cannot be pulled out. Therefore, it is impossible to remove the lock plate 3 and steal a DVD or the like housed in the rental case simply by preparing a magnet. It cannot be released unless the release tool 23 is provided with two magnets 20a and 20b spaced apart from the lock claws 12a and 12b.

Schematic of the state which removed the lock plate and opened the cover of the rental case. The internal structure of the rental case. In the embodiment of the lock plate, (a) is a front view, (b) is a right side view, and (c) is a rear view. When the lock claw of the lock plate is locked to the locking part provided on the lid. (a) When the lock claw of the lock plate is engaged with the engaging part, (b) When the claw of the lock claw is lowered by being pulled by the magnet, and (c) When the lock plate is pulled out. 5A is a lock claw shown in FIG. 5B, and FIG. 5B is a lock claw shown in FIG. Operation of both lock claws when a large magnet is brought close.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body case 2 Lid 3 Lock plate 4 Opening 5 DVD accommodation space 6 Navel 7 Lock plate accommodation space 8 Locking part 9 Flat part
10 Lock part
11 Base
12 Lock claw
13 axes
14 Swing lever
15 axes
16 Tip claw
17 Clearance
18 Top view
19 Locking space
20 Magnet
21 Resin spring
22 Base
23 Release tool

Claims (3)

In the anti-theft mechanism for rental cases such as DVDs, which prevents DVDs displayed on the shelves in the store from being stolen, the rental case comprises a main body case and a lid that closes the main body case, and an alarm device is provided from the outer opening of the case. A lock plate with a tag sticker or the like to be sensed is slid into the lock plate housing space and engaged with each other so that the lid does not open, and the lock portion of the lock plate has a predetermined interval. The pair of lock claws are pivotally supported so that they can swing, and a rocking lever is pivotally supported on a shaft provided in an eccentric position between the two lock claws. There is a slight gap in between so that it can be locked to the tip of the swing lever by descending, and the tip of the lock claw is urged by elastic force A lending case characterized in that the protrusion protrudes from the upper surface of the lock plate lock part, and the tip claw of both lock claws is lowered by the magnetic force of the magnet so that it can be released from the locking part provided on the case side. Locking mechanism. The locking mechanism of the rental case according to claim 1, wherein the engaging portion provided on the case side is made of metal. 3. The lending case locking mechanism according to claim 1, wherein the base of the two lock claws is urged by a resin spring.

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