JPH0739006Y2 - Passing coin counter - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial applications]

The present invention relates to an improvement of a passing coin counter used in a coin mechanism of a vending machine.

[0002]

[Prior art]

2. Description of the Related Art As a pass-through coin counter used in a coin mechanism of a vending machine, a coin counter as shown in FIG. 2 is conventionally known. That is, a pickup coil 2 wound around a ferrite core 2a is arranged outside the coin passage arranged in a part of a casing 1 made of a strong material such as polycarbonate, and the inside of the coin passage is arranged so as to face the pickup coil 2. The shutter 3 is arranged on the support shaft 4. The shutter 3 is movably attached to the support shaft 4 in a seesaw shape, and the weight 5 is embedded below. Although not shown below the coin counter portion, a changer stocker and a residual stocker are arranged.

The operation of this conventional coin-type coin counter will now be described. As shown in FIG. 3, the weight of the weight 5 always causes the shutter 3 to stand up until the remaining amount of the change stocker is full. In this state, the coin passage is opened, and the coins C inserted from above are accumulated on the change stocker side 7. When the coins on the changer stocker side 7 are full, the lower part of the shutter 3 is pushed up by the coins, blocking the passage of coins for the changer stocker side 7 as shown by the imaginary line, and the coins are accumulated on the remaining stocker side 8. .

In the above operation, the function as a coin counter is
The pickup coil 2 is electrically connected to a dedicated IC 10 for determining whether or not a metal is in proximity to oscillate the pickup coil 2. When the coin C approaches the pickup coil 2, an eddy current is generated in the coin C under the influence of the magnetic field of the pickup coil 2, and the eddy current loss reduces the inductance of the pickup coil 2. In response to this, IC10 stops the oscillation of the pickup coil 2,
It is common to identify and count only the passage of coins accumulated on the change stocker side 7 by the signal at this time.

[0005]

[Problems to be solved by the device]

However, in the above-mentioned configuration, the malfunction often occurs depending on the attitude of the falling coin. That is, in the figure, the state where the coins C accumulated on the residual stocker side 8 are closed when the shutter is closed (shown by an imaginary line)
When it slides on the surface 3a of the shutter 3 and falls, it comes close to the pickup coil 2, so the pickup coil 2 moves to the changer stocker side 7 even though it is a coin accumulated in the remaining stocker side 8. It will be mistakenly detected as a coin that accumulates. Therefore, the coins accumulated in the change stocker side 7 cannot be accurately counted.

Therefore, the present invention intends to solve the above problems with a simple configuration and to provide a coin counter free from malfunctions.

[0007]

[Means for Solving the Problems]

A passage type coin counter of the present invention has a casing, a pickup coil provided in the casing for detecting passage of a coin, and a shutter rotatably arranged in a coin passage so as to face the pickup coil. In the coin counter, a magnetic material is arranged at least at one end of the shutter facing the pickup coil. Further, the magnetic body is preferably a ferrite core.

[0008]

[Action]

In this way, the core of the pickup coil and the magnetic body form a closed magnetic circuit, and when coins accumulated on the change stocker side pass, coins accumulated on the residual stocker side due to eddy current loss of the coin. Since there is no particular fluctuation when passing through since it is outside the closed magnetic circuit, the amount of amplitude given to the pickup coil greatly differs, and the passage of coins accumulated on the residual stocker side is not counted.

[0009]

【Example】

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a magnetic body 6 made of a ferrite plate is embedded in a resin shutter 3 so as to face the pickup coil 2. It goes without saying that the optimum burial position should be found at this time. Since the other structure is the same as that of the conventional FIG. 2, the description thereof will be omitted. With this structure, the core of the pickup coil 2
2a (ferrite core in this case) and the ferrite plate as the magnetic body 6 form a closed magnetic path through the coin passage, and when the coin C as the metal body passes between them, Q indicating the loss of the coil is , The inductance decreases sharply, and as a result, the IC 10 stops the oscillation of the pickup coil 2 and surely generates the coin count signal. On the other hand, when the coins C accumulating on the residual stocker side 8 pass, they pass outside the closed magnetic circuit formed by the pickup coil 2 and the magnetic body 6, so that the Q of the pickup coil does not fluctuate and oscillation does not occur. Since it is intermittent, no coin count signal is generated.

[0010]

[Effect of device]

As described above, according to the present invention, by arranging the magnetic body at least at one end of the shutter facing the pickup coil, coins accumulated on the change stocker side can be accurately counted, and malfunctions can be eliminated. A pass-through coin counter can be provided.

[0011]

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing the structure of a passing coin counter according to an embodiment of the present invention.

FIG. 2 is a sectional view of an essential part showing the configuration of a conventional general passing coin counter.

FIG. 3 is an explanatory diagram showing an operating state of the passage-type coin counter in FIG.

[Explanation of symbols]

 C ... Coin 1 ... Casing 2 ... Pickup coil 3 ... Shutter 6 ... Magnetic material

Claims (2)

[Scope of utility model registration request] 1. A passage type coin counter having a casing, a pickup coil provided in the casing for detecting passage of coins, and a shutter rotatably arranged in a coin passage so as to face the pickup coil. A passage type coin counter, wherein a magnetic material is arranged at least at one end of the shutter facing the pickup coil. 2. The pass-through coin counter according to claim 1, wherein the magnetic body is a ferrite core.