JPH0418063Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an unauthorized operation prevention mechanism using string-suspended coins suitable for use in coin storage devices used in public telephones, vending machines, etc.

[Conventional technology]

In general, coin storage devices are equipped with various sorting mechanisms to ensure that only genuine coins are used for equipment operation.However, as a method of unauthorized use using such genuine coins, there is a method of unauthorized use called so-called string hanging. There is a way. This involves fixing a hanging string to one end of the coin using adhesive or other material, inserting it into the coin slot, and pulling out the string to retrieve the coin after the call ends or the product is taken out. , is typical of malicious abuse.

FIG. 8 is a schematic diagram of a conventional coin storage device in a public telephone. In the figure, what is designated by reference numeral 1 is a coin accumulation track, which is composed of a pair of side plates 8 and 9 facing each other. A coin sorting track, a coin slot, etc. (not shown) are provided on the upstream side of the coin accumulation track 1, and a safe for storing coins is provided on the downstream side. A window 8a formed by drilling the side plates 8 and 9 at the end of the coin accumulation track 1;
9a is provided.

Reference numeral 5 indicates a storage lever having a substantially crank shape, and is rotatably supported around a support shaft 6. A storage plate 2 is formed at one end of the storage lever 5 and is arranged so as to be able to move forward and backward into the windows 8a and 9a. The cross-sectional shape of the storage plate 2 is formed into an arc shape with a radius R centered on the support shaft 6. This is to prevent a component force from being generated in the direction of moving the storage plate 2 out of the window 9a due to the collision of coins that have fallen down the coin accumulation track 1.
At the same time, this is to prevent a component force from being generated in the direction in which the storage plate 2 exits from the window 9a even when a coin is pushed up from below during fraud prevention, which will be described later. This is because in coin storage devices applied to public telephones, etc., the storage lever 5 is set so that it can be operated with a slight operating force because it relies on the low voltage of the local power source as the operating power source. This is because it is necessary to prevent the storage lever 5 from malfunctioning. Further, an electromagnetic magnet 7 is arranged opposite to the other end of the storage lever 5. This electromagnetic magnet 7 is normally not energized, but when a coin storage signal arrives, it is energized and attracts the other end of the storage lever 5, causing the storage lever 5 to rotate counterclockwise about the support shaft 6.

In such a configuration, when a genuine coin 3 to which a hanging string 4 is fixed is inserted from the coin input port, it passes through a coin sorting track and is guided to a coin accumulation track 1. And at one end, a storage plate 2 blocking the coin storage track 1
accumulated on top. When the coin storage signal arrives, one end of the storage lever 5 is attracted by the electromagnetic magnet 7, and as a result of this operation, the storage plate 2 retreats outward from the window 9a, opening the coin storage track 1 and storing the coins 3. be done. Simultaneously with coin storage, the storage plate 2 returns to close the coin storage track again. At this time, the hanging string 4 is bent by the side edge of the storage plate 4 on the closed side.

Here, when the unauthorized operator pulls up the tip of the hanging string 4, the string 4 becomes tensioned, and the tension of the string 4 causes the storage plate 2 to move outward from the window 9a. By repeating this operation several times, the coin 3 will be ejected from the storage plate 2, and the coin 3 will be returned to the coin storage track 1 and can be retrieved by pulling the hanging string 4.

In order to prevent such unauthorized use of coins suspended by a string, a lever means is provided at the end of the coin accumulation track to prevent coins from being lifted, as disclosed in, for example, Japanese Utility Model Publication No. 58-47492, or A variety of devices have been proposed in the past, in which various coin lifting prevention means, such as a cutter, are provided at bent portions of the coin sorting track and the like.

[Problem that the invention attempts to solve]

However, according to the above-mentioned conventional structure, the number of parts increases due to the provision of a new coin lifting prevention means, which causes problems in terms of workability and assemblage.Furthermore, the addition of parts attached to the track causes problems in the structure. There is also the problem of causing changes such as the above or increasing the size of the device.Also, if you try to forcefully pull up the thread even after it has been cut, the coin will become suspended in the device, which will cause coin jams, which is the main problem. There were drawbacks such as the equipment itself becoming inoperable.

Therefore, it is an object of the present invention to provide a mechanism that reliably prevents fraudulent operations using string-suspended coins with a simple structure without changing the structure of the main body of the device at all.

[Means for solving problems]

The unauthorized operation prevention mechanism using string-suspended coins according to the present invention includes a coin storage lever that is rotated by a drive source that is energized by a coin storage signal, and a coin storage lever that is provided at the tip of the storage lever and is normally installed at the end of the coin storage track. A coin storage plate is provided that faces the inside of the track so as to close the coin storage plate and is withdrawn from the track when coins are stored. The notch is formed at a depth that faces the coin accumulation track when the storage plate is in a closed state.

[Effect]

According to the present invention, even if an attempt is made to pull up a coin that has passed through the storage plate and is stored, the hanging string that suspends the coin passes through the notch formed in the storage plate, so it will not bend in the storage plate. Maintain a vertical and taut state. Therefore, even if the hanging line is pulled up, no tension is generated on the hanging line that would cause the storage plate to move out of the storage track and open the storage track, and this causes the string to hang coins. It is possible to prevent unauthorized operations due to lifting of equipment.

〔Example〕

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings. Figures 1 to 4 show an embodiment of the tamper-evident mechanism using a string-suspended coin according to the present invention, and in these figures, the same or corresponding parts as in Figure 8 described above are designated by the same numbers. The explanation thereof will be omitted.

The unauthorized operation prevention mechanism using string-suspended coins according to the present invention is provided at the lower end of the coin storage lever 5 which is rotatably driven by a coin storage signal, and is normally placed in the coin storage lever 5 facing into the track 1 so as to close the terminal end of the storage track 1. The coin storage plate 2, which is withdrawn from the track during storage, is characterized by a notch 10 formed at the side edge of the coin storage plate 2 in the closing direction and at the center of the storage plate 2. The depth of the notch 10 is such that it faces the coin track 1 when the storage plate 2 is in the state of blocking the coin track 1. Therefore, when the string-hanging coin 3 is stored and in a string-hanging state, the hanging string 4 is inserted through the notch 10 of the storage plate 2, and the hanging string 4 is not in contact with the storage plate 2. ing. In addition, in the figure, 11 is an interpose pin that protrudes into the track 1 and locks subsequent coins when the storage plate 2 is withdrawn, 12 is a return plate for returning coins,
13 is the return passage. According to such a configuration, even if an unauthorized operator pulls the string-suspended coin 3 once stored on the storage passage side, the hanging string 4 that hangs the coin can be pulled through the notch formed in the storage plate 2. Since the part 10 is inserted through and tensioned in the vertical direction, there is no force acting in the direction of withdrawing the storage plate 2 as in the conventional case, and this makes it easy and reliable to prevent unauthorized operation by lifting the coin 3. This can be prevented. In addition, the coin 3 is caused to collide with the storage plate 2 many times, and the force of the collision forces the storage plate 2.
Even if an attempt is made to remove the coin from the coin accumulation track, as mentioned above, by forming the inclination of the storage plate 2 with high accuracy in consideration of the relationship with the lever support shaft 6, the component force due to the impact force will be applied only to the support shaft 6. join, lever 5
It is possible to prevent rotation, etc. from occurring.

5 to 7 show another embodiment of the present invention. In this embodiment, the above-mentioned notch 10 is formed in a part of the side edge of the storage plate 2 in the closing direction.
At the same time, a locking piece 20 is bent downward.
are integrally provided, and when this locking piece 20 engages with the side surface of the coin 3, the coin 3 itself acts as a stopper, making it possible to prevent the storage plate 2 from moving in the exit direction. be. Therefore, by adopting this structure, it is possible to reliably prevent the storage plate 2 from leaving the coin track due to the collision force of the coin 3 from below, so that the accuracy of the adjustment of the inclination of the storage plate 2 is as high as that of the above-mentioned embodiment. is not required, and has advantages in terms of moldability and assemblability. That is, as shown in FIG. 7, when the distances from the support shaft 6 at both side edges of the storage plate 2 are r and R, if r>R, a component force is applied to the lever 5 in the opening direction. Because it works from the structural standpoint,
Although it is usually necessary to adjust the slope so that r=R,
In this embodiment, since it can be mechanically blocked by the above-mentioned locking piece 20, the condition r<R may be satisfied, and the advantage thereof will be obvious. Note that the present invention is not limited to the structure of the embodiment described above, and the shape and structure of each part including the lever shape may be modified as appropriate.
It is free to change, and various modifications are possible.

[Effect of idea]

As explained above, according to the unauthorized operation prevention mechanism using string-suspended coins according to the present invention, a notch is provided at the side edge of the storage plate in the closing direction and at the center of the storage plate, and this notch is inserted into the storage plate. Since it is formed at a depth that faces the coin accumulation track when in the closed state,
The hanging string of string-hanging coins can be kept in a vertical state when the coins are stored, and despite the simple and inexpensive structure, the hanging string of string-hanging coins always passes through the notch in the storage plate and is pre-tensioned. Because it is suspended, even if you pull the string-hanging coin once stored, the same acting force will not work once the storage plate is removed.
This makes it possible to easily and reliably prevent coins from being lifted. Further, since it is only necessary to provide a notch in the storage plate, there is no need to change the structure of the device at all, and by adopting this mechanism, the device does not become larger. Furthermore, by providing this mechanism on the coin storage plate at the final end of the coin, various excellent practical effects can be achieved, such as achieving the purpose of the present invention without affecting the other internal mechanisms of the device. be.

[Brief explanation of the drawing]

1 and 2 are a schematic front view and a side sectional view of a coin storage section showing an embodiment of the tampering prevention mechanism using string-suspended coins according to the present invention, and FIGS. 3 and 4 are main parts thereof. 5 to 7 are a schematic perspective view, a schematic front view, and a schematic side sectional view showing another embodiment of the present invention, and FIG. 8 is a conventional coin storage plate. It is a schematic diagram for explaining an example. 1... Coin accumulation track, 2... Coin storage plate, 3...
...String hanging coin, 4...Hanging string, 5...Coin storage lever, 6...Spindle, 7...Electromagnetic magnet, 10
... Notch portion, 20 ... Bending locking piece.

Claims (1)

[Scope of utility model registration request] A coin storage lever that is rotated by a drive source that is energized by a coin storage signal, and a coin storage lever that is provided at the tip of the storage lever and that normally faces into the track so as to close the terminal end of the coin storage track and when storing coins. A notch is provided at the side edge of the storage plate in the closing direction and at the center of the storage plate, and the notch is used to store the coins when the storage plate is in the closed state. An unauthorized operation prevention mechanism using string-suspended coins, which is characterized by being formed at a depth that faces the orbit.