JP2009042958A - Paper sheet pull-out prevention mechanism of paper sheet identifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize and make compact a bill pull-out prevention mechanism for preventing bills from being pulled out of a bill conveyance passage of a bill identifier. <P>SOLUTION: The bill conveyance passage 10 of the bill identifier 1 is switched between a closed state and an open state by a shutter 42 of the bill pullout prevention mechanism 40. A solenoid 41 of the bill pullout prevention mechanism 40 has a shutter 42 directly connected to an operating rod 49. When the solenoid 41 is excited, the shutter 42 rotates about a rotation axis 44 on the back of a guide plate portion 43 on the side of a main body, so that the bill conveyance passage 10 closed by shutter pieces 46a to 46d is switched to the open state. The need for a link mechanism coupling between the solenoid 41 and the shutter 42 is eliminated and the solenoid 41 is positioned by effective use of vacant space on the back of the guide plate portion 43 on the side of the main body, whereby a small and compact bill pullout prevention mechanism can be provided to facilitate miniaturization of the bill identifier 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a paper sheet withdrawal prevention mechanism of a paper sheet identification machine for preventing an inserted paper sheet from being pulled out by an illegal act. In more detail, paper sheet pullout prevention suitable for use in paper sheet classifiers that are highly demanded to be compact and compact due to limited installation space, such as bill validators incorporated in intergame machines for game machines. Regarding the mechanism.

  Between game machines in a game store or the like, a game machine platform machine for renting game media such as pachinko balls used in the game machine 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.

  In the banknote discriminator, there is a possibility that a banknote temporarily inserted in the banknote transport path after being inserted and judged to be authentic is pulled out of the banknote insertion slot by an illegal act. In order to prevent such withdrawal of banknotes, the banknote identification machine incorporates a banknote withdrawal prevention mechanism equipped with a shutter capable of blocking the banknote transport path so that the banknotes in the banknote transport path cannot be accessed from the banknote insertion slot. It is.

  Here, when a bill validator is incorporated in a general vending machine or a money changer, a sufficient installation space can often be secured. However, in the inter-game machine for game machines placed between the game machines in a game store or the like, the installation space is extremely limited so that a large number of game machines can be installed. It is necessary to make the installation space of the bill validator as small as possible. In order to reduce the size of the bill validator, it is necessary to reduce the size of each mechanism incorporated therein, and the bill withdrawal prevention mechanism is also required to be downsized.

In the patent document 1, the applicant of the present application has made a proposal for reducing the size and size of the bill withdrawal prevention mechanism. In the banknote withdrawal prevention mechanism disclosed herein, the swing member for blocking the banknote transport path is provided on the side of the banknote transport path via a link mechanism having a linear movement member extending in the width direction of the banknote transport path. The bill conveyance path can be cut off by connecting to a solenoid disposed on the side and exciting the solenoid.
JP 2006-79158 A

  The present invention relates to an improvement of the bill withdrawal prevention mechanism disclosed in Patent Document 1 described above, and it is an object of the present invention to achieve further miniaturization and downsizing of the withdrawal prevention mechanism for paper sheets such as bills. .

  In order to solve the above-described problems, the present invention provides a paper sheet pull-out preventing mechanism for preventing a paper sheet from being pulled out from a transport path of a paper sheet identification machine. It has a shutter and a solenoid for driving the shutter, and the shutter is directly connected to an operating rod of the solenoid.

  By directly connecting the shutter to the solenoid, components such as a link mechanism for constructing the power transmission path between them becomes unnecessary, and the paper sheet pullout prevention mechanism can be made smaller and more compact accordingly. Cost can also be reduced.

  In order to directly connect the shutter and the solenoid, the solenoid may be disposed in a portion on the back side of the guide plate that defines one guide surface of the transport path. The guide plate is provided with an inlet sensor for detecting that a paper sheet has been inserted and a sensor for determining the authenticity of the inserted paper sheet. By using the space, it is not necessary to add the installation space of the solenoid to the paper sheet classifier. In particular, if a solenoid is disposed on the back surface of the guide surface in parallel with the guide surface, a dead space between components such as sensors can be effectively used without adding an installation space on the back surface side of the guide plate.

  In the present invention, the shutter is rotatable between a blocking position where the conveyance path is blocked and an open position where the conveyance path is opened, with a rotation fulcrum located near the back surface of the guide plate as a center. Is desirable. If the shutter pivot point is near the back of the guide plate, that is, if the distance from the shutter pivot point to the transport path is made as small as possible, an external force is applied to the shutter at the blocking position due to fraud. In this case, the bending moment about the rotation fulcrum generated by the external force can be reduced. For this reason, it is effective to prevent the shutter held at the blocking position by the exciting force of the solenoid or the built-in spring force from moving to the open position due to an illegal action.

  In this case, the solenoid is disposed in the center in the width direction of the transport path so as to face the transport direction of the transport path, and the shutter is arranged around a rotation center line extending in the width direction of the transport path. It can be made pivotable.

  Here, the shutter has an L shape including an arm portion whose one end is rotatable about the rotation fulcrum and a shutter main body portion that is bent and extends perpendicularly from the tip of the arm portion, In a state where the shutter is in the blocking position, the arm portion extends along the back surface of the guide plate, and the shutter main body portion projects into the conveyance path through an opening formed in the guide plate. What is necessary is just to enable it to block a conveyance path.

  In this case, a claw portion that bends and extends substantially at a right angle from the front end of the shutter main body portion is formed, and in a state where the shutter is in the blocking position, a corner portion formed by the shutter main body portion and the claw portion includes: It is desirable that the leading edge of the paper sheet fed from the upstream side of the transport path can be engaged.

  If such a claw portion is formed, when a foreign object such as a card is inserted from the upstream side of the conveyance path in a state where the conveyance path is blocked by the shutter, the leading end of the foreign object is positioned at the shutter. Enter the corners of the shutter body and claw. As a result, the claw portion is engaged with the side surface portion of the distal end portion of the inserted foreign matter, and the rotation of the shutter around the rotation fulcrum is prevented. Therefore, it is possible to reliably prevent an illegal act of opening a shutter by inserting a foreign object from the outside.

  Further, when an L-shaped shutter is used, a connecting portion that protrudes at a right angle in a direction opposite to the shutter main body is formed from an intermediate position of the arm portion, and the connecting portion is connected to the operating rod of the solenoid. What is necessary is just to connect with a front-end | tip part.

  In the paper sheet pulling out prevention mechanism of the paper sheet identification machine according to the present invention, since the shutter is directly connected to the solenoid and driven, a link mechanism for transmitting the driving force of the solenoid to the remote shutter is unnecessary. It becomes. Accordingly, it is possible to reduce the size and the size, and to reduce the manufacturing cost.

  Moreover, in this invention, the solenoid is arrange | positioned at the back surface side of the guide plate which has prescribed | regulated the conveyance path. Therefore, it is not necessary to secure a separate installation space for the solenoid on the side of the conveyance path, so that the paper sheet drawing prevention mechanism can be further reduced in size and size.

  Furthermore, in the present invention, the rotation fulcrum of the shutter is arranged as close as possible to the conveyance path. Therefore, when an external force is applied to the shutter due to an unauthorized act, a large torque around the rotation fulcrum does not act on the shutter, which is effective against an unauthorized act of opening the shutter.

  Furthermore, in the present invention, when a claw is formed on the shutter and a foreign object is inserted in a state where the conveyance path is blocked, the claw is engaged with the foreign object and the shutter cannot be opened. It is like that. Therefore, it is possible to reliably prevent an illegal act of trying to open the shutter by inserting a card or the like from the outside.

  Embodiments of a bill validator to which the present invention is applied will be described below with reference to the drawings.

(overall structure)
FIG. 1 is a plan view showing a banknote discriminator to which the present invention is applied, and FIG. 2 is a perspective view of the banknote discriminator in a state where an opening / closing unit is 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 an explanatory diagram showing the internal configuration of the bill validator 1, and FIG. 4 is a plan view of the main unit 2 with the opening / closing unit 4 and the insertion port lid unit 5 removed. The internal configuration of the bill validator 1 will be described with reference to these figures.

  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).

  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, 9b, a solenoid-type bill withdrawal prevention mechanism 40 is incorporated on the main unit 2 side. Shutter pieces 46a to 46d for switching the bill conveyance path 10 between a blocked state and an open state are provided. Details of the bill withdrawal prevention mechanism 40 will be described later.

  At the site of the banknote transport path 10 on the downstream side of the shutter pieces 46a to 46d, there are four sets of transmissive photosensors for detecting a light transmission pattern that is an optical feature of the banknotes transported through the banknote transport path 10. Arranged in the 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 of a belt-pulley type, and includes a pair of left and right drive pulleys 21a, 21b and three pairs of left and right driven pulleys 22a, 22b, 23a, 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 units 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. 4, the transport mechanism includes a transport motor 26 built in a portion of the main body unit 2 on the side of the recess 3. The rotational force of the conveying motor 26 is transmitted to the driving pulleys 21a and 21b via a reduction gear train (not shown) and a driving shaft 28.

(Bill withdrawal prevention mechanism)
5A and 5B are explanatory views showing the banknote withdrawal preventing mechanism 40, in which FIG. 5A shows a state where the banknote transport path 10 is blocked, and FIG. 5B shows a state where the banknote transport path 10 is opened. (C) shows a case where an external force is applied to the shutter piece. The bill withdrawal prevention mechanism 40 will be described with reference to FIGS. 4 and 5.

  The bill withdrawal prevention mechanism 40 includes a solenoid 41 and a shutter 42 that is rotated by the solenoid 41. The solenoid 41 is disposed on the back side of the main body side guide plate portion 43 that defines one guide surface 10 b of the banknote transport path 10 in the main body unit 2. As shown by a dotted line in FIG. 4, the solenoid 41 is attached in a posture facing the downstream side of the conveyance path at the center in the width direction of the banknote conveyance path 10 on the back side of the main body side guide plate portion 43. More specifically, on the back surface side of the main body side guide plate portion 43 of the main body unit 2, the space between the left and right driven pulleys 24 a and 24 b and the left and right inlet sensors 9 a and 9 b is used. .

  The shutter 42 is rotatable around a rotation center line extending in the width direction of the bill conveyance path 10 around a rotation fulcrum 44 attached to the back surface of the main body side guide plate portion 43. The shutter 42 includes an arm portion 45 that is rotatably supported at one end on a rotation fulcrum 44. The arm portion 45 extends toward the downstream side in the transport direction, and an orthogonal arm portion 46 extending in the width direction of the banknote transport path 10 is formed at the tip thereof. Four shutter pieces 46a to 46d are formed so as to rise and extend at right angles to the 10 side. As can be seen from FIG. 4, these shutter pieces 46 a to 46 d are arranged at predetermined intervals along the width direction of the banknote transport path 10, and four opening portions formed in the main body side guide plate portion 43. It can appear in the banknote conveyance path 10 through 43a-43d. The driven pulley 24a is positioned between the shutter pieces 46a and 46b, and the driven pulley 24b is positioned between the shutter pieces 46c and 46d. In this example, openings 47 a to 47 d are also formed in the opening and closing side guide plate portion 47 facing the openings 43 a to 43 d of the main body side guide plate portion 43.

  Next, a connecting arm 48 that extends at a right angle toward the side opposite to the banknote transport path 10 is formed from the middle position of the arm portion 45 of the shutter 42. The connecting arm 48 is formed with a long hole 48a that is long in the length direction of the connecting arm 48, and the tip of the actuating rod 49 of the solenoid 41 penetrates in a slidable state. A large-diameter retaining member 49a is formed at the tip of the operating rod 49 so as not to come out of the long hole 48a.

(Operation of bill withdrawal prevention mechanism)
The solenoid 41 is normally in a demagnetized state shown in FIG. In this state, the operating rod 49 is in the protruding position by the spring force of the built-in spring, and the shutter 42 is in the blocking position 42 </ b> A where the banknote transport path 10 is blocked. That is, the arm portion 45 of the shutter 42 extends in parallel to the back surface of the main body side guide plate portion 43, the shutter pieces 46a to 46d project into the banknote transport path 10 through the openings 43a to 43d, and the shutter pieces 46a to 46d. Each of these tips reaches the openings 47a to 47d of the opening / closing guide plate portion 47 on the opposite side.

  In this state, when a bill is inserted from the bill insertion slot 8, the detection pieces of the inlet sensors 9a and 9b are pushed by the tip of the bill. Thereby, the bill validator 1 detects that a bill has been inserted. When it is detected that a bill has been inserted, the drive of the transport mechanism is started, the solenoid 41 is excited, and the operating rod 49 is pulled to the retracted position against the spring force. As a result, as shown in FIG. 5B, the shutter 42 rotates to the back side of the main body side guide plate portion 43 around the rotation fulcrum 44, and the shutter pieces 46 a to 46 d open from the bill conveyance path 10. It reaches the open position 42B drawn into 43a to 43d, and the banknote transport path 10 is switched to the open state.

  After this, the banknote inserted from the banknote insertion port 8 can be inserted to the position of the conveyor belts 25a and 25b. The bills inserted up to this position are fed downstream along the bill transport path 10 by the transport belts 25a and 25b. The bills transported along the bill transport path 10 have their light transmission patterns read by four sets of transmission photosensors 11 to 14, and their magnetic patterns are read by the magnetic head 15. Based on the read bill information, the bill type and authenticity are identified. When the banknote is identified as an acceptable banknote, the banknote is sent from a banknote outlet 10a at the downstream end of the banknote transport path 10 to a banknote storage (not shown). When it is identified that it is an unacceptable banknote or a fake bill, such a banknote is reversely fed and returned from the banknote insertion slot 8.

  Here, after the rear end of the banknote transported through the banknote transport path 10 passes through the positions of the shutter pieces 46a to 46d, the solenoid 41 returns to the demagnetized state. As a result, the shutter 42 returns again to the blocking position 42A shown in FIG. Therefore, it becomes impossible to draw out the banknote remaining in the banknote conveyance path 10 from the banknote insertion slot 8 side, and such an illegal act is prevented.

  In addition, when a banknote is jammed in the banknote conveyance path 10, the opening / closing unit 4 is opened and the banknote conveyance path 10 is set to an open state, for example, when a maintenance check operation of the banknote conveyance mechanism is performed. That is, the pressing rollers 31a, 31b, 32a-34a pressed against the driving pulleys 21a, 21b and the driven pulleys 22a-24a, 22b-24b from above the pair of left and right conveying belts 25a, 25b on the main unit 2 side. , 32b to 34b are separated from the transport belts 25a and 25b, and the banknote transport path 10 defined therebetween is opened as shown in FIG.

  As described above, in the bill withdrawal prevention mechanism of the bill validator 1 according to the present embodiment, the shutter 42 is driven by being directly connected to the solenoid 41, so the shutter at a position away from the driving force of the solenoid 41. The link mechanism conventionally required for transmission to 42 becomes unnecessary. Accordingly, it is possible to reduce the size and the size, and to reduce the manufacturing cost.

  Further, the solenoid 41 is disposed on the back side of the main body side guide plate portion 43 defining the banknote transport path 10. Therefore, it is not necessary to separately secure the installation space for the solenoid 41 on the side of the banknote transport path 10, so that the paper sheet drawing prevention mechanism can be further reduced in size and size, which is advantageous for downsizing the banknote discriminator 1. It is.

  Further, a rotation fulcrum 44 of the shutter 42 is disposed as close as possible to the banknote transport path 10. Therefore, as shown in FIG. 5C, even when the shutter pieces 46a to 46d are pushed from the bill insertion slot 8, the torque M around the rotation fulcrum 44 generated by the external force F is small. For this reason, the shutter 42 can be reliably held at the blocking position 42 </ b> A by the spring force of the solenoid 41, and an illegal act of opening the shutter 42 can be prevented.

(Another example of shutter)
Next, FIGS. 6A and 6B are a partial cross-sectional view and an operation explanatory view showing another example of the shutter 42 of the banknote withdrawal preventing mechanism 40. The illustrated shutter 142 has basically the same shape as that of the shutter 42, and extends in the width direction of the banknote conveyance path 10 around a pivot fulcrum 144 attached to the back surface of the main body side guide plate portion 43. It can be rotated around an extending rotation center line.

  The shutter 142 includes an arm portion 145 whose one end is rotatably supported by a rotation fulcrum 144. The arm portion 145 extends toward the downstream side in the transport direction, and an orthogonal arm portion 146 extending in the width direction of the banknote transport path 10 is formed at the tip thereof. Four shutter pieces 146a to 146d are formed so as to rise and extend at right angles to the 10 side. These shutter pieces 146a to 146d are arranged at predetermined intervals along the width direction of the banknote transport path 10 and pass through the four openings 43a to 43d formed in the main body side guide plate portion 43. It is possible to appear on the road 10.

  Here, claw portions 147a to 147d projecting at right angles toward the same side as the arm portion 145 (upstream side of the banknote transport path 10) are formed at the distal ends of the shutter pieces 146a to 146d of this example. Further, when the shutter 142 is in the closed state shown in the drawing, the claw portions 147a to 147d enter the openings 47a to 47d of the opening / closing side guide plate portion 47. As a result, when the foreign matter 148 such as a card is inserted from the upstream side of the banknote transport path 10 with the shutter 142 closed, the tip 148a of the foreign matter 148 becomes the shutter pieces 146a to 146d and the claw portions 149a to 149a. It enters the right angled corner portions 148a-148d formed between 149d.

  The engagement state between the tip 148a of the foreign material 148 and the corner portions 148a to 148d becomes stronger as the pressing force (load from the outside) F of the foreign material 148 becomes stronger. When such an engagement state is formed, it is impossible to rotate in the direction in which the shutter 142 is opened around the rotation fulcrum 144. That is, the banknote conveyance path 10 cannot be opened. Therefore, in the state where the shutter 142 is closed, it is possible to reliably prevent an illegal act of trying to push down the shutter 142 by inserting a foreign substance 148 such as a card from the outside via the bill insertion slot 8.

  Although not shown, a connecting arm extending at a right angle toward the opposite side of the banknote transport path 10 is formed from an intermediate position of the arm portion 145 of the shutter 142, and this connecting arm is a solenoid 41. Are connected to the tip of the actuating rod 49. This configuration is the same as that of the shutter 42.

(Other embodiments)
In the above example, the present invention is applied to a banknote discriminator, but the present invention prevents paper sheet withdrawal in a paper sheet classifier for identifying paper sheets other than banknotes such as tickets and coupons. Applicable to mechanism.

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 explanatory drawing which shows the internal structure of a banknote identification machine. It is a top view of the main unit of a bill validator. It is explanatory drawing which shows a banknote extraction prevention mechanism, (a) shows the state which has blocked the banknote conveyance path, (b) shows the state which has opened the banknote conveyance path, (c) shows external force to a shutter. It is explanatory drawing at the time of acting. (a) And (b) is a fragmentary sectional view and operation explanatory view showing another example of a shutter of a bill withdrawal prevention mechanism.

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 Banknote insertion path 9a, 9b Entrance sensor 10 Banknote conveyance path 10a Bill outlet 11-11 Transmission type photo sensor 11a-14a Light emitting element 11b-14b Light receiving element 15 Magnetic head 16 Press roller 17a, 17b Exit sensor 21a, 21b Drive pulley 22a-24a, 22b-24b Driven pulley 25a, 25b Conveying belt 26 Conveying motor 28 Drive shafts 31a to 34a, 31b to 34b Pressing roller 40 Bill withdrawal prevention mechanism 41 Solenoid 42, 142 Shutter 43 Main body side guide plate portions 43a to 43d Opening 44, 144 Rotating fulcrum 45, 145 Arm Part 46,146 orthogonal arm part 46a-46d, 14 a~146d shutter piece 47 closing side guide plate portions 47a~47d opening 48 connecting arm 48a elongated hole 49 the operating rod 49a retaining 147a~147d claw portion 148 foreign substances 148a tip 149a~149d filled corners

Claims (8)

In the paper sheet removal prevention mechanism for preventing the paper sheet from being pulled out from the conveyance path of the paper sheet identification machine,
A shutter for blocking the conveyance path;
A solenoid for driving the shutter;
The paper sheet withdrawal preventing mechanism for a paper sheet identification machine, wherein the shutter is directly connected to an operating rod of the solenoid. In the paper sheet pullout prevention mechanism according to claim 1,
The solenoid is disposed in parallel with the guide plate at a portion on the back side of the guide plate that defines one guide surface of the transport path. Pull-out prevention mechanism. In the paper sheet withdrawal preventing mechanism according to claim 2,
The shutter is rotatable about a rotation fulcrum located in the vicinity of the back surface of the guide plate between a blocking position where the conveyance path is blocked and an open position where the conveyance path is opened. A mechanism to prevent paper sheets from being pulled out. In the paper sheet pull-out prevention mechanism according to claim 3,
The solenoid is disposed in the center in the width direction of the transport path so as to face the transport direction of the transport path,
The paper sheet withdrawing prevention mechanism of the paper sheet identification machine, wherein the shutter is rotatable about a rotation center line extending in a width direction of the conveyance path. In the paper sheet pull-out prevention mechanism according to claim 4,
The shutter includes an arm portion whose one end is rotatable about the rotation fulcrum, and a shutter main body portion that is bent at a right angle from the tip of the arm portion and extends.
In a state where the shutter is in the blocking position, the arm portion extends along the back surface of the guide plate, and the shutter main body portion projects into the conveyance path through an opening formed in the guide plate. A paper sheet withdrawal prevention mechanism for a paper sheet identification machine, wherein the conveyance path is blocked. In the paper sheet pull-out prevention mechanism according to claim 5,
The shutter includes a claw portion that bends and extends substantially at a right angle from the tip of the shutter body portion;
In the state where the shutter is in the blocking position, the leading end portion of the paper sheet fed from the upstream side of the conveyance path can be engaged with the corner portion formed by the shutter main body portion and the claw portion. A paper sheet withdrawal prevention mechanism for a paper sheet identification machine. In the paper sheet pull-out prevention mechanism according to claim 5 or 6,
The shutter includes a connecting portion protruding at a right angle in a direction opposite to the shutter main body from a middle position of the arm portion, and the connecting portion is connected to a tip portion of the operating rod of the solenoid. A paper sheet withdrawal prevention mechanism for a paper sheet identification machine.   A paper sheet classifier comprising the paper sheet drawing prevention mechanism according to any one of claims 1 to 7.

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