JP2009042922A - Paper sheet identification device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a work efficiency in miniaturization of a bill identification device, assembling and maintenance thereof, and the like. <P>SOLUTION: A motor for transferring a bill 26 of the bill identification device 1 is a brushless motor and a motor driver IC 50 and a motor rotational pulse output circuit 61 are built therein and made into a unit. In assembling work of the motor for transferring a bill 26, after the motor for transferring a bill 26 is assembled to a body unit 2 of the bill identification device 1, it only requires connection of a connector 62 of a circuit board 40A and a motor wiring board 63 led out from the motor for transferring a bill 26. The assembling work is performed easily, and a replacement of a motor and a working efficiency at the time of maintenance are improved. The circuit board 40A needs no space for installation of the motor driver IC 50, a photo interrupter for detecting a motor rotational position, and the like, so the circuit board 40A is miniaturized and the bill identification device 1 with the circuit board 40A mounted therein has the advantage of miniaturization. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a paper sheet identification machine that feeds paper sheets such as inserted banknotes into a conveyance path by a belt-pulley type conveyance mechanism and identifies the authenticity, type, and the like.

  Between the game tables in the game store, a game machine platform machine for renting game media such as pachinko balls used in the game table is arranged. A bill discriminator is mounted on the inter-table machine for gaming machines, and the inserted bills can be identified and gaming media can be lent out. Patent Document 1 discloses a bill validator equipped with a belt-pulley type transport mechanism.

In the belt-pulley type transport mechanism, a bill transport belt is stretched between a drive pulley and a driven pulley, a drive shaft is connected to the drive pulley, and a power transmission gear fixed to the shaft end of the drive shaft The rotational driving force of the banknote transport motor is transmitted to the drive pulley via.
JP-A-8-7148

  Fig.5 (a) is explanatory drawing which shows the conventional motor for a banknote conveyance and its peripheral components. A motor with a brush is generally used as a bill conveyance motor. Further, a winged gear 102 for obtaining a motor rotation signal is attached to the rotating shaft 101 of the banknote transport motor 100, and a motor driver of the banknote transport motor 100 is mounted on the circuit board 103 of the banknote discriminator. A photo interrupter 105 for detecting the rotation of the IC 104 and the winged gear 102 is mounted. In addition, a motor wiring board 106 drawn from the bill conveyance motor 100 is connected to a connector 107 on the circuit board 103.

  As described above, the circuit board 103 of the bill validator needs a space for mounting the motor driver IC 104 and the photo interrupter 105, which hinders the circuit board 103 from being downsized. Further, when assembling the bill conveyance motor 100, the assembling work and the wiring work of these parts are necessary, and the working efficiency is poor. For this reason, workability at the time of motor replacement and maintenance is not good. Furthermore, since it is a motor with a brush, it is necessary to design in consideration of life and noise.

  In view of these points, an object of the present invention is to propose a paper sheet classifier equipped with a transport motor that requires less installation space and can efficiently perform operations such as assembly, maintenance, and replacement. There is.

  In order to solve the above-described problems, the present invention provides a paper sheet identification machine including a conveyance motor for driving a conveyance belt for conveying a paper sheet to be identified along a conveyance path. The conveyance motor is characterized by being a brushless motor in which a motor driver IC and a motor rotation pulse output circuit for generating a pulse signal representing a motor rotation position are incorporated and integrated.

  In the paper sheet discriminator of the present invention, a brushless motor incorporating a motor driver IC and a motor rotation pulse output circuit is used as a transport motor. As a result, the circuit board of the paper sheet classifier can be reduced in size, which is advantageous for downsizing the paper sheet classifier on which the circuit board is mounted.

  Also, when assembling a motor that incorporates a motor driver IC and a motor rotation pulse output circuit as a unit, assembly of peripheral parts such as a motor driver IC and a photo interrupter for detecting the motor rotation position is not required. Therefore, workability is improved. Therefore, exchange and maintenance of the transport motor are also improved.

  Furthermore, the use of a brushless motor is advantageous for extending the life and preventing noise.

  In addition to this, the conventional motor interrupter for detecting motor rotation needs to consider malfunction due to deterioration of the light emitting element and dirt on the light receiving / emitting surface. Since a signal is used, there is an advantage that it is not necessary to consider such a point.

  Hereinafter, an embodiment of a paper sheet classifier to which the present invention is applied will be described with reference to the drawings.

(overall structure)
FIG. 1 is a plan view showing a bill validator according to the present embodiment, and FIG. 2 is a perspective view of the bill validator with the opening / closing unit opened.

  The bill validator 1 includes a main unit 2, an opening / closing unit 4 accommodated in a recess 3 formed on the surface of the main unit 2 and extending in the front-rear direction of the apparatus, and a front end of the main unit 2 on the bill insertion slot side. It has the insertion opening lid unit 5 attached to the part. The opening / closing unit 4 can be opened and closed within a predetermined angle range from the closed position stored in the recess 3 around the support shafts 6a and 6b formed on both sides of the rear end portion. Further, engaging levers 7a and 7b formed on both sides of the front end portion of the opening / closing unit 4 are inserted into engaging grooves 7c and 7d formed in the main unit 2, so that the opening / closing unit 4 is locked in the closed position. Has been. By pulling the left and right engaging levers 7a and 7b inward, the engaging levers 7a and 7b can be disengaged from the engaging grooves 7c and 7d to open the opening / closing unit 4.

  FIG. 3 is a cross-sectional view showing the internal configuration of the bill validator 1. The internal configuration of the bill validator 1 will be described with reference to this figure as well. A bill insertion slot 8 is formed on the front surface of the main unit 2 of the bill validator 1, and the bill insertion slot 8 is formed between the front end of the main unit 2 and the insertion slot lid unit 5. Via the path 9, it leads to a bill conveyance path 10 formed between the main unit 2 and the opening / closing unit 4. The rear end of the banknote transport path 10 is a banknote outlet 10a, and banknotes discharged from the banknote path 10 are stored in a banknote storage (not shown). Further, a circuit board 40 </ b> A is mounted on the main unit 2.

  A pair of left and right inlet sensors 9a and 9b are arranged on the upstream side of the banknote transport path 10 following the banknote insertion path 9 in order to detect the insertion of banknotes on the main unit 2 side. As the inlet sensors 9a and 9b, those provided with a photocoupler and a mechanical switch can be used. On the downstream side of these inlet sensors 9a and 9b, a solenoid-type bill withdrawal prevention mechanism 20 is incorporated on the main body unit 2 side. A shutter piece 20a for switching the bill conveyance path 10 between a closed state and an open state is provided.

  At the site of the banknote transport path 10 on the downstream side of the shutter piece 20a, four sets of transmissive photosensors 11 to 14 for detecting a light transmission pattern that is an optical feature of the banknote transported through the banknote transport path 10 are provided. It is arranged in the width direction. The light emitting elements 11 a to 14 a of these transmission type photosensors are mounted on the open / close unit 4, and the light receiving elements 11 b to 14 b are mounted on the main unit 2. A magnetic head 15 for detecting the magnetic properties of the banknotes is disposed in the banknote transport path 10 on the downstream side of these installation positions. The magnetic head 15 is mounted on the main unit 2, and a pressing roller 16 for pressing a bill against the detection surface of the magnetic head 15 is mounted on the opening / closing unit 4.

  A pair of left and right outlet sensors 17a and 17b are arranged on the side of the main unit 2 in the vicinity of the banknote outlet 10a in order to detect the banknotes to be discharged. As these exit sensors, those equipped with a photocoupler and a mechanical switch can be used.

  The transport mechanism for transporting banknotes along the banknote transport path 10 is a belt-pulley type, and a pair of left and right drive pulleys 21a and 21b and three pairs of left and right driven pulleys 22a, 22b, 23a and 23b. 24a, 24b and a pair of left and right conveying belts 25a, 25b stretched between the driving pulley 21a and the driven pulleys 22a-24a and between the driving pulley 21b and the driven pulleys 22b-24b, respectively. I have. These parts are mounted on the main unit 2 side, the driving pulleys 21a and 21b are arranged on the downstream end side of the bill conveyance path 10, and the driven pulleys 22a, 22b, 23a and 23b are driving pulleys. 21a, 21b and the magnetic head 15 are disposed, and the driven pulleys 24a, 24b are disposed closer to the bill insertion slot 8 than the light emitting elements 11a to 14a.

  The transport mechanism includes four pairs of left and right pressing rollers 31a, 31b, 32a, 32b, 33a, 33b and 34a, 34b mounted on the opening / closing unit 4 side. These are mounted on the opening / closing unit 4 so as to be slidable in the vertical direction and are rotatable. From the top of the conveyor belts 25a and 25b, the driving pulleys 21a and 21b, the driven pulleys 22a and 22b, 23a, 23b and 24a, 24b are pressed by spring force.

  Further, as shown in FIG. 1, the transport mechanism includes a banknote transport motor 26 that is built in a portion of the main body unit 2 on the side of the recess 3. The rotational force of the bill transport motor 26 is transmitted to the drive pulleys 21a and 21b via a reduction gear train (not shown) and a drive shaft 28.

(Control system)
FIG. 4 is a schematic block diagram showing a control system of the bill validator 1. The control system is mounted on the circuit board 40A of the main unit 2 and includes a control unit 40 configured mainly with a microcomputer including a CPU, a ROM, and a RAM. The control unit 40 includes a conveyance control unit 41 that performs conveyance control of the inserted bill, a light emission control unit 42 that performs light emission control of the transmission type photosensors 11 to 14, and detection from the transmission type photosensors 11 to 14 and the magnetic head 15. An identification unit 43 for identifying the authenticity and type of the bill P inserted based on the signal is provided.

  When detecting that the banknote P has been inserted by the entrance sensors 9a and 9b, the transport control unit 41 excites the solenoid 20b of the banknote withdrawal prevention mechanism 20 to open the shutter piece 20a. At the same time, the bill conveyance motor 26 is driven via the motor driver IC 50 to start the conveyance of the inserted bill P. The light emission control part 42 will drive the light emitting elements 11a-14a of the transmissive | pervious photosensors 11-14 via the drivers 51-54, and will light-emit, if conveyance of a banknote is started. The detection signals of the light receiving elements 11b to 14b of the transmissive photosensors 11 to 14 and the detection signal of the magnetic head 15 are input to the identification unit 43 via the signal processing circuits 55 to 59, respectively.

  The identification unit 43 identifies the inserted banknote based on the light transmission pattern and the magnetic pattern stored and held in the memory 44. The conveyance control unit 41 continues the bill feeding operation and feeds it to a predetermined feeding position (escrow position). The feeding position is a position where the trailing edge of the fed banknote has passed the detection position of the magnetic head 15. The conveyance control unit 41 detects the amount of rotation of the banknote transport motor 26 based on the pulse signal output from the motor rotation pulse output circuit 61 as the banknote transport motor 26 rotates, and based on this, the banknote transport The amount is controlled.

  When the bill is sent to the feeding position, the transport control unit 41 temporarily holds the bill at the feeding position and closes the shutter piece 20a. Thereafter, the identification unit 43 identifies the authenticity and type of the banknote based on the detection signals of the transmission type photosensors 11 to 14 and the magnetic head 15 and the contents of the memory 44. If the bill is a genuine note and is a denominated bill, the transport control unit 41 drives the transport motor 26 via the motor driver IC 50 to remove the bill held at the feeding position. The paper is sent from the discharge port 10a to a bill storage unit (not shown) and stored therein. If the bill is a counterfeit bill or a banknote of an unacceptable denomination, the transport control unit 41 reversely rotates the transport motor 26 via the motor driver IC 50 and inserts the banknote held at the feeding position into the bill. It sends out toward the opening | mouth 8, discharges | emits from the said banknote insertion slot 8, and returns to a banknote insertion person.

(Bill transport motor)
Here, the banknote transport motor 26 of this example is a brushless motor, and has a structure in which a motor driver IC 50 and a motor rotation pulse output circuit 61 are built in a motor case and unitized. The brushless motor has a built-in magnetic sensor such as a Hall element or MR element for detecting the magnetic pole position. Based on the output from this, the motor rotation pulse output circuit 61 outputs a pulse signal representing the motor rotation amount. .

  In the assembling operation of the banknote transport motor 26, as shown in FIG. 5B, after the banknote transport motor 26 is assembled to the main unit 2 of the banknote discriminator 1, the connector 62 mounted on the circuit board 40A. In addition, it is only necessary to connect the motor wiring board 63 drawn out from the bill conveyance motor 26. Therefore, the assembling work can be easily performed, and the workability at the time of motor replacement and maintenance is also improved.

  Further, it is not necessary to secure an installation space for the motor driver IC 50 and a detection component such as a photo interrupter for detecting the motor rotation position on the circuit board 40A. Therefore, the circuit board 40A can be reduced in size, which is advantageous for downsizing the bill validator 1 on which the circuit board 40A is mounted.

  Furthermore, there are no adverse effects such as deterioration of the light emitting element and a decrease in detection accuracy due to dirt on the light emitting / receiving surface as in the case of using a photo interrupter.

  In addition, since the bill conveyance motor 26 is a brushless motor, it has an advantage that it has a longer life than a motor with a brush and does not require countermeasures against noise generated due to sliding between the brush and the motor shaft. .

(Other embodiments)
In the above example, the present invention is applied to a banknote discriminator, but the present invention is also applicable to a paper sheet discriminator for identifying paper sheets other than banknotes such as tickets and coupons. It is.

It is a top view of the bill identification machine to which the present invention is applied. It is a perspective view of the bill discriminating machine in the state where the opening / closing unit is opened. It is an internal block diagram of a banknote identification machine. It is a schematic block diagram which shows the principal part of the control system of a banknote identification machine. It is explanatory drawing which shows the case of the conventional banknote conveyance motor and this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Banknote identification machine 2 Main body unit 3 Recessed part 4 Opening / closing unit 5 Insertion port cover unit 6a, 6b Support shaft 7a, 7b Engagement lever 7c, 7d Engagement groove 8 Banknote insertion port 9 Bill insertion path 9a, 9b Entrance sensor 10 10a Banknote outlets 11-14 Transmission type photosensors 11a-14a Light emitting element 11b-14b Light receiving element 15 Magnetic head 16 Pressing rollers 17a, 17b Exit sensor 20 Bill withdrawal prevention mechanism 20a Shutter piece 20b Solenoid 21a, 21b Driving pulleys 22a-24a , 22b-24b Driven pulleys 25a, 25b Conveyor belt 26 Conveyor motor 28 Drive shafts 31a-34a, 31b-34b Pressing roller 40 Control unit 40A Circuit board 41 Conveyance control unit 42 Light emission control unit 43 Identification unit 44 Memory 50 Motor driver IC
51-54 Driver 55-59 Signal processing circuit 61 Motor rotation pulse output circuit 62 Connector 63 Motor wiring board

Claims (1)

In a paper sheet identification machine provided with a transport motor for driving a transport belt for transporting a paper sheet to be identified along a transport path,
The sheet motor is a brushless motor in which a motor driver IC and a motor rotation pulse output circuit for generating a pulse signal indicating a motor rotation position are incorporated and integrated. .

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