JP4479129B2 - Bill recognition device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a banknote identification device, and more particularly to a banknote identification device that is mounted on a vending machine or the like and detects that a banknote has been inserted from a banknote insertion slot and transports the banknote to the inside.
[0002]
[Prior art]
When a bill is inserted into the bill insertion slot, the vending machine is equipped with a bill recognition device that detects the insertion and transports and stores the bill inside.
[0003]
FIG. 4 is a perspective view of an external appearance of a conventional banknote recognition device as viewed from the front side, and FIG. 5 is a broken cross-sectional view of the banknote insertion slot along line BB in FIG.
The banknote recognition device 100 includes a banknote insertion slot 101, a banknote identification section 102 disposed on the back side of the banknote insertion slot 101, and a banknote storage section 103 disposed below the banknote identification section 102. Further, as shown in FIG. 5, the bill recognition device 100 is provided with a guide port 101a from the bill insertion port 101 toward the downstream side of the bill conveyance direction, and an under guide 101b is provided facing the guide port 101a. It has been. Further, the under guide 101b is provided with an entrance reflection sensor 101c downstream in the bill conveyance direction.
[0004]
In the banknote recognition apparatus 100 having the configuration shown in FIGS. 4 and 5, when a banknote is inserted from the banknote insertion slot 101 and the insertion is detected by the entrance reflection sensor 101c, the transport motor is rotated forward and inserted. A bill is guided by the guide port 101 a and the under guide 101 b and taken into the inside, and is conveyed to the bill recognition unit 102. If the bill is determined to be authentic and is not determined to be a genuine note, the transport motor reversely operates at that time to return the bill to the bill insertion slot 101. If it is determined to be a genuine note, the bill is further conveyed and stored in the bill storage unit 103.
[0005]
In such a banknote recognition apparatus 100, the guide port 101a is a light gray, which is formed by blending polycarbonate (Polycarbonate, PC) and acrylonitrile-butadiene-styrene (ABS) resin at an appropriate ratio. It is made of colored PC / ABS.
[0006]
[Problems to be solved by the invention]
However, in the conventional banknote identification device, there is a problem that a phenomenon in which acceptance of a subsequent banknote is rejected occurs when light in a specific wavelength region enters the inside from the banknote insertion slot.
[0007]
This is because, in the conventional banknote recognition apparatus 100 shown in FIGS. 4 and 5, the light gray PC / ABS that forms the guide port 101a of the banknote insertion slot 101 is in the visible to near-infrared wavelength region. This is because it has the property of reflecting light.
[0008]
For example, when sunlight is inserted into the bill insertion slot 101, light in the visible to near-infrared wavelength region included in the sunlight is reflected by the guide opening 101a. The reflected light reflected by the guide port 101a is incident on the under guide 101b disposed opposite to the guide port 101a, is reflected again here, and this reflected light further enters the guide port 101a.
[0009]
In this way, the light incident from the bill insertion slot 101 is repeatedly reflected between the guide port 101a and the under guide 101b and enters downstream in the bill conveyance direction. Then, when this light finally reaches the entrance reflection sensor 101c and the light is light in a wavelength region to which the entrance reflection sensor 101c responds, the bill recognition device 100 inserts a bill. The conveyance motor starts rotating forward.
[0010]
Here, since no bill is actually inserted, sensors other than the entrance reflection sensor 101c do not operate even if a fixed time such as 3 seconds elapses. In this case, the banknote identification device 100 determines that an abnormality has occurred in the vicinity of the banknote insertion slot 101, and starts a reverse operation of the transport motor.
[0011]
When the reverse rotation operation of the transport motor is completed, the banknote recognition apparatus 100 is in a state of waiting for banknote removal. Therefore, since the banknote identification device 100 determines that there is a banknote waiting to be removed from the banknote insertion slot 101 while the entrance reflection sensor 101c is illuminated, the banknote recognition apparatus 100 continues to be unacceptable.
[0012]
Thus, in the conventional banknote identification device, the entrance reflection sensor may be erroneously recognized by light incident from the banknote insertion slot, and subsequent acceptance of banknotes may be rejected.
[0013]
This invention is made | formed in view of such a point, and it aims at providing the banknote identification device which does not malfunction by the light which entered from the banknote insertion slot.
[0014]
[Means for Solving the Problems]
In the present invention, in order to solve the above-mentioned problem, it is a banknote identification device that detects that a banknote has been inserted from a banknote insertion slot and transports it inside, and bends from the banknote insertion slot toward the downstream in the banknote transport direction. A guide port that absorbs light in the visible to near-infrared wavelength region, guides one side of the banknote, bends along the guide port, and faces the guide port An under guide that is disposed and guides the other surface side of the banknote, and is provided at a position where the light incident from the banknote insertion port does not hit the downstream guide downstream of the bent portion in the banknote transport direction. And an entrance reflection sensor for detecting that the bill has been inserted.
[0015]
According to such a bill recognition device, the guide port absorbs light in the visible to near-infrared wavelength region, so even if light in the visible to near-infrared wavelength region enters the bill insertion port, the guide Absorbed in the mouth. As a result, the light incident from the bill insertion slot does not enter the downstream of the bill conveyance direction by being repeatedly reflected between the guide port and the under guide, and does not reach the entrance reflection sensor. Therefore, the entrance reflection sensor is not mistaken.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 2 is a perspective view of the appearance of the banknote recognition device as seen from the front side.
[0017]
The banknote recognition device 10 includes a banknote insertion slot 11, a banknote identification section 12 disposed on the back side of the banknote insertion slot 11, and a banknote storage section 13 disposed below the banknote identification section 12.
[0018]
In the banknote identification device 10 having the above-described configuration, when a banknote is inserted from the banknote insertion slot 11, a transport motor (not shown) performs normal rotation, and the inserted banknote is taken into the banknote identification apparatus 10. It is conveyed to the identification unit 12. If the banknote is determined to be authentic and is not determined to be a genuine note, the transport motor reversely rotates at that time and is returned to the banknote insertion slot 11. On the other hand, when the inserted banknote is determined to be a genuine note, the banknote is further conveyed and stored in the banknote storage unit 13.
[0019]
FIG. 1 is a broken sectional view of a bill insertion slot of a bill recognition device. However, FIG. 1 has shown the broken sectional view of the banknote insertion slot in the AA of FIG.
The bill recognition device 10 is provided with a guide port 11a from the bill insertion port 11 toward the downstream side in the bill conveyance direction, and an under guide 11b is provided facing the guide 11a. Further, the under guide 11b is provided with an entrance reflection sensor 11c downstream from the bill insertion slot 11 in the bill conveyance direction.
[0020]
The guide port 11a is formed of PC / ABS formed by blending PC and ABS resin at an appropriate ratio. As PC / ABS, a matte grade and black one is used. This black PC / ABS matte grade has the property of absorbing light in the visible to near infrared wavelength region.
[0021]
FIG. 3 is a diagram showing the spectral sensitivity characteristics of the entrance reflection sensor.
The spectral sensitivity of the entrance reflection sensor 11c is in the visible to near-infrared wavelength region with a wavelength of about 700 nm to about 1150 nm, and has a characteristic of responding to light energy in this wavelength region.
[0022]
In the banknote recognition apparatus 10 having the configuration shown in FIGS. 1 to 3, when a banknote is inserted into the banknote insertion slot 11 and the banknote reaches the entrance reflection sensor 11c, the entrance reflection sensor 11c Insertion of a banknote is detected by detecting a change in the amount of light received by the entrance reflection sensor 11c when there is not. And if the banknote identification device 10 detects insertion of a banknote, the forward rotation operation | movement of a conveyance motor will be started, and the banknote will be guided to the inside of the banknote identification device 10 by the upper surface and the lower surface being guided by the guide port 11a and the under guide 11b, respectively. It is conveyed to.
[0023]
Here, in the banknote insertion standby state, light in the visible to near-infrared wavelength region, for example, contained in sunlight or the like, from the banknote insertion slot 11 is a black PC / ABS matte grade guide opening 11a. To be absorbed. Thereby, the light that has entered from the bill insertion slot 11 is not repeatedly reflected between the guide slot 11a and the under guide 11b and enters downstream in the bill conveyance direction, and does not reach the entrance reflection sensor 11c. That is, the light in the wavelength region from about 700 nm to about 1150 nm that is included in the light incident from the bill insertion slot 11 and to which the entrance reflection sensor 11c shown in FIG. No light is received by 11c. Therefore, even if light enters the bill insertion slot 11, the entrance reflection sensor 11c is not mistaken and the bill recognition device 10 does not malfunction.
[0024]
Even when sunlight was vertically applied to the banknote insertion slot 11 of the banknote identification apparatus 10 described above during fine weather (light intensity 80000 lux), the movement of the transport motor was not recognized. Further, even when the light bulb (light intensity 40000 lux) was brought close to the bill insertion slot 11 and the light bulb and the bill insertion slot 11 were brought into contact with each other, the movement of the transport motor was not recognized. Therefore, by forming the guide port 11a with a black PC / ABS matte grade, the light incident from the bill insertion port 11 does not reach the entrance reflection sensor 11c, so that the entrance reflection sensor 11c is not misidentified and the bill recognition device. 10 will not malfunction.
[0025]
【The invention's effect】
As described above, in the present invention, the guide port of the banknote recognition device is configured to absorb light in the visible to near-infrared wavelength region. Thereby, even if the light in the visible to near-infrared wavelength region enters the bill insertion slot, it does not enter the bill conveyance direction downstream and does not reach the entrance reflection sensor. Therefore, the entrance reflection sensor is not misidentified, and the bill validator does not malfunction.
[Brief description of the drawings]
FIG. 1 is a broken sectional view of a bill insertion slot of a bill recognition device.
FIG. 2 is a perspective view of an external appearance of the banknote identification device as viewed from the front side.
FIG. 3 is a diagram showing a spectral sensitivity characteristic of an entrance reflection sensor.
FIG. 4 is a perspective view of an external appearance of a conventional banknote recognition device as viewed from the front side.
FIG. 5 is a broken sectional view of the bill insertion slot along the line BB in FIG. 4;
[Explanation of symbols]
11 Bill insertion slot 11a Guide slot 11b Under guide 11c Entrance reflection sensor

Claims (2)

It is a banknote identification device that detects that a banknote has been inserted from a banknote insertion slot and conveys it inside,
A guide port that is arranged to bend toward the downstream side of the bill conveyance direction from the bill insertion port, absorbs light in the visible to near-infrared wavelength region, and guides one side of the bill;
An under guide that bends along the guide opening and is disposed opposite the guide opening to guide the other surface of the banknote;
In the under guide , the entrance reflection sensor that is provided on the downstream side of the bent portion in the bill conveyance direction and is not exposed to the light incident from the bill insertion port, and detects that the bill has been inserted,
A bill recognition device comprising: The entrance reflection sensor has spectral sensitivity in a wavelength region of about 700 nm to about 1150 nm,
The banknote identification device according to claim 1, wherein the guide port is made of polycarbonate and acrylonitrile-butadiene-styrene resin and is a black matte grade.

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