JP2020021194A - Shutter for circular medium processor - Google Patents

Abstract

To prevent a circular medium from being caught between a shutter member and a side wall of a medium passage even though the shutter member that opens and closes the medium passage operates with good responsiveness.SOLUTION: A shutter for a circular medium processor includes a medium passage 3 for a circular medium, an oscillating shutter member 21 for opening and closing the medium passage 3, third torsion coil spring 32 (a plurality of torsion coil springs) for urging the shutter member 21, and a solenoid 35 (a switching mechanism) that can switch between an open state in which the shutter member 21 is held at an open position and a closed state in which the open state has been canceled. When the shutter member 21 starts oscillation from the open position, the shutter member 21 is pressed by first and second coil parts 63 and 64 (all torsion coil springs). From the middle of the oscillation process of the shutter member 21 to the end of the oscillation, the shutter member 21 is pushed by the second coil part 64 (a part of the torsion coil spring).SELECTED DRAWING: Figure 7

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter of a circular medium processing apparatus that handles a circular medium such as coins and medals, and that opens and closes a path of the circular medium.

  2. Description of the Related Art Conventionally, as a circular medium processing device that handles a circular medium such as coins and medals, there is a medium sorting device as described in, for example, Patent Document 1 or Patent Document 2. The medium sorting apparatus sorts a circular medium in order to be stored in the apparatus or returned to a user, and includes a shutter that opens and closes a medium passage when changing a destination of the circular medium. The shutter includes a shutter member that swings so as to enter and exit the medium passage, and a drive source that drives the shutter member. When the shutter member comes out of the medium passage, the medium passage is opened, and the circular medium rolls in the medium passage and is sent to the downstream side of the medium passage. On the other hand, when the shutter member enters and crosses the medium passage, the medium passage is blocked and closed by the shutter member. In this state, the circular medium cannot pass through the medium passage.

  As a driving source for driving such a shutter member, a solenoid is often used as disclosed in Japanese Patent Application Laid-Open No. H11-163,837. In order to bias a swinging member such as a shutter member, a torsion coil spring may be used as disclosed in Patent Document 2. Furthermore, a device that combines Patent Literature 1 and Patent Literature 2, that is, a medium using a solenoid to hold a swing member (shutter member) urged by a torsion coil spring against a spring force Sorting devices are also known. According to this medium selection device, the shutter member is biased by the torsion coil spring in the direction to close the medium passage, and the shutter member is held by the solenoid at a position where the medium passage is opened against the spring force of the torsion coil spring. Become like

  In the medium sorting device including such a torsion coil spring and a solenoid, in a normal state, that is, in a circular medium receiving state, the solenoid is energized to be in an excited state, and the shutter member resists the spring force of the torsion coil spring. It has been retracted from the medium passage. When a predetermined number of circular media are sent through the medium passage from this state, the power to the solenoid is cut off, and the shutter member is pushed by the spring force of the torsion coil spring and inserted into the medium passage. Since the shutter member protrudes into the medium passage and the medium passage is blocked by the shutter member, the rolled circular medium is no longer fed.

JP-A-2004-199338. JP-A-2000-348231.

  In the medium sorting device including the torsion coil spring and the solenoid, there is a possibility that a problem may occur due to the shutter member. This problem occurs when the operation of projecting the shutter member into the medium passage is delayed. That is, the circular medium may be sandwiched between the shutter member and the side wall of the medium passage, and in such a case, the medium passage is blocked by the circular medium. When the medium passage is clogged in this way, the medium sorting device and the medium processing device to which the circular medium is fed must be stopped, and the clogged circular medium must be removed from the medium passage.

  As a countermeasure against the slowing of the closing operation of the shutter member, it is conceivable to use a torsion coil spring having a spring force larger than the conventional one in order to increase the response of the shutter member. However, with this configuration, when the circular medium is sandwiched between the shutter member and the side wall of the medium passage, the shutter member strongly pushes the circular medium, so that the rolling power of the circular medium is lost, and the circular medium is lost. Is more firmly sandwiched. That is, it becomes impossible to avoid pinching due to the circular medium sliding on the shutter member.

  An object of the present invention is to provide a shutter for a circular medium processing apparatus in which a circular medium is not sandwiched between the shutter member and a side wall of the medium passage, even though a shutter member for opening and closing the medium passage operates with good responsiveness. To provide.

  In order to achieve this object, a shutter of the circular medium processing device according to the present invention includes a medium passage on which a circular medium rolls, and is swingably supported with respect to the medium passage. A shutter member that moves into and out of the medium passage to open and close the medium passage; a plurality of torsion coil springs for urging the shutter member in a direction in which the medium passage closes; and a spring force of the plurality of torsion coil springs for the shutter member A switching mechanism configured to be able to switch between an open state held at an open position withdrawn from the medium passage against the medium path and a closed state in which the open state has been eliminated, wherein the switching mechanism is moved from the open state to the open state. When the shutter is switched to the closed state and the shutter member is pushed by the spring force of the plurality of torsion coil springs and starts swinging from the open position, the shutter member is turned into all the torsion coils. Pushed by the roots, said the middle shutter member of the process of swinging up the swing ends, the shutter member is characterized in that the pressed by a portion of the torsion coil spring.

  According to the present invention, in the shutter of the circular medium processing device, among the plurality of torsion coil springs, the torsion coil spring that presses the shutter member from the middle of the swinging process of the shutter member to the end of the swing is another torsion coil spring. The spring force may be smaller than that of the coil spring.

  According to the present invention, in the shutter of the circular medium processing device, the magnitude of the spring force of the plurality of torsion coil springs may be realized by changing the number of turns of a coil unit.

  According to the present invention, in the shutter of the circular medium processing device, the shutter member has a rail piece located in line with the medium passage, and the rail piece is in a state where the shutter member is located at the open position. May form a part of the medium passage, and may move out of the medium passage in a state where the medium passage is closed by the shutter member.

In the present invention, the spring force applied from the torsion coil spring to the shutter member is relatively large when the shutter member starts swinging from the open position. Therefore, the speed of the shutter member when the shutter member starts swinging becomes relatively high. Further, the spring force applied to the shutter member from the torsion coil spring becomes relatively small during the course of the swinging of the shutter member. For this reason, when the circular medium is sandwiched between the shutter member and the side wall of the medium passage, the frictional resistance acting on the circular medium becomes relatively small. Since the rolling power becomes superior, the circular medium comes off the shutter member.
Accordingly, it is possible to provide a shutter of a circular medium processing device in which a circular medium is not sandwiched between the shutter member and a side wall of the medium passage even though the shutter member that opens and closes the medium passage operates with high responsiveness. it can.

FIG. 3 is a side view showing a schematic configuration of a shutter of the circular medium processing device according to the present invention. It is a side view of the base member from which the flapper was removed. It is a side view which expands and shows the opening and closing structure of a shutter. It is a perspective view which expands and shows the connection part of a shutter member and a torsion coil spring. It is a side view of a shutter member. It is a perspective view of a shutter member. FIG. 7 is a cross-sectional view of a main part showing a state where the shutter member is located at a retracted position. It is sectional drawing of the principal part which shows the state which the 1st leg contacted the stopper piece. It is sectional drawing of the principal part which shows the state in which the swing of the shutter member was complete | finished.

Hereinafter, an embodiment of a shutter of a circular medium processing apparatus according to the present invention will be described in detail with reference to FIGS.
1 is a device such as a coin sorting device (not shown) or a medal sorting device (not shown), and has a medium passage 3 through which a circular medium 2 such as coins and medals passes. are doing. The medium passage 3 includes a groove 5 (see FIG. 2) provided in a base member 4 serving as a housing of the circular medium processing apparatus 1, and a flapper 6 attached to the base member 4 so as to cover an opening of the groove 5. Is formed by

The medium passage 3 according to the present embodiment includes a drop passage 8 extending downward from a medium inlet 7 opening at a front upper end portion of the circular medium processing device 1 and a circular medium processing device 1 extending from the lower end of the drop passage 8. And a sorting passage 10 extending obliquely to the medium outlet 9 located at the lower end of the side. The circular medium 2 rolls in the sorting passage 10 toward the medium outlet 9 after dropping the falling passage 8.
The sorting passage 10 is provided with a sorting mechanism 11 for discharging a circular medium smaller in diameter than the regular circular medium 2, and a shutter 12 for opening and closing the sorting passage 10.

As shown in FIG. 1, the flapper 6 is swingably supported on the upper end of the base member 4 via a first support shaft 13. A first torsion coil spring 14 is mounted on the first support shaft 13. The first torsion coil spring 14 urges the flapper 6 in a direction in which the swing end of the flapper 6 is pressed against the base member 4.
At the center of the flapper 6, a circular medium smaller in diameter than the regular circular medium 2 and a circular medium 2 remaining in the sorting passage 10 when a shutter 12 described later closes the sorting passage 10 are discharged. Hole 15 is formed. The hole 15 is connected to a medium return passage (not shown). The medium return passage is a passage for converting the circular medium 2 from the circular medium processing device 1 to a user.

As shown in FIG. 2, the sorting mechanism 11 includes a shutter member 21 provided near the upper side of the sorting passage 10, a pressing lever 23 having a pressing portion 22 protruding into the sorting passage 10 (see FIG. 3). It is constituted by.
The shutter member 21 is a component that constitutes a part of the shutter 12 to be described later, has a band-shaped rail piece 24 positioned alongside the sorting passage 10, and swings on the base member 4 via the second support shaft 25. It is movably supported. The second support shaft 25 is supported by the base member 4 so as to extend in parallel with the sorting passage 10. More specifically, as shown in FIG. 7, the second support shaft 25 is disposed along the back surface 4a (the surface opposite to the flapper 6) of the base member 4, and as shown in FIG. Both ends are rotatably supported by bearings 26 and 27 of the base member 4.

  The shutter member 21 functions as a part of the shutter 12 described later, and is held at one of the open position shown in FIG. 7 and the closed position shown in FIG. 7 to 9 are sectional views for explaining the swinging of the shutter member 21 in a stepwise manner. In these figures, the broken position in FIG. 7A is the position indicated by the line AA in FIG. , (B) is the position indicated by the line BB in FIG.

  The rail piece 24 is for eliminating the circular medium 2 a (see FIG. 7B) having an outer diameter smaller than the regular circular medium 2, and extends along the upper end of the sorting passage 10. As shown in FIG. 7B, the rail piece 24 faces the side surface of the upper end of the groove 5 with the shutter member 21 located at the open position, and cooperates with the upper end of the groove 5. The upper end of the sorting passage 10 is formed. The upper edge of the hole 15 of the flapper 6 is located above the lower end of the rail piece 24, as shown in FIG. The vertical width of the rail piece 24 is such that the upper end of the regular circular medium 2 is guided by the groove 5 and the rail piece 24, and the circular medium 2a having a smaller diameter than the regular circular medium 2 is a rail piece. 24 that are not guided by 24.

As shown in FIG. 3, the pressing lever 23 is disposed on the back surface 4 a side (the side opposite to the flapper 6) of the base member 4, and is swingably supported by the second support shaft 25. The pressing portion 22 of the pressing lever 23 projects toward the flapper 6, passes through a first hole 28 (see FIG. 2) formed in the base member 4, and faces the sorting passage 10.
The second support shaft 25 holds a second torsion coil spring 31 for urging the pressing lever 23 and a third torsion coil spring 32 for urging the shutter member 21.

  The second torsion coil spring 31 urges the pressing lever 23 in a direction in which the pressing portion 22 projects into the sorting passage 10. The leg 31a at one end of the second torsion coil spring 31 pushes the convex plate 33 of the base member 4, and the leg 31b at the other end pushes the rear surface of the pressing lever 23 (the surface opposite to the flapper 6). I have. Therefore, the circular medium 2 passing through the sorting passage 10 is pushed toward the flapper 6 by the pressing unit 22 when passing the side of the pressing unit 22. The movement of the regular circular medium 2 pressed by the pressing portion 22 toward the flapper 6 is restricted at the lower end and the upper end, respectively.

  The lateral movement of the lower end of the circular medium 2 is regulated by the flapper 6. The lateral movement of the upper end of the circular medium 2 is regulated by the rail pieces 24. As a result, even if the regular circular medium 2 is pressed by the pressing portion 22, it does not fall into the hole 15 of the flapper 6, but rolls and passes through the sorting passage 10. However, the circular medium 2a having a smaller diameter than the regular circular medium 2 {see FIG. As a result, it falls under the rail piece 24 into the hole 15 of the flapper 6. The circular medium 2 that has fallen into the hole 15 of the flapper 6 is converted into a user through a medium return passage.

The shutter 12 is for opening and closing the sorting passage 10. The case where the sorting passage 10 is closed is, for example, when the number of the circular media 2 supplied to the circular medium processing device 1 exceeds a predetermined number. In describing the direction of the configuration of the shutter 12, for convenience, the position in which the circular medium processing device 1 can be used is set as a posture in which the circular medium processing device 1 can be used, and the shutter 12 is viewed from the back side of the base member 4 as shown in FIG. 3. Indicated by direction.
As shown in FIGS. 3 and 7, the shutter 12 according to this embodiment includes a shutter member 21 described above, a solenoid 35 having a driving lever 34 connected to an upper end of the shutter member 21, and a second A third torsion coil spring 32 that is held on the support shaft 25 and urges the shutter member 21 in the closing direction.

The shutter member 21 according to this embodiment is formed by bending a metal plate material formed in a predetermined shape. As shown in FIGS. 5 and 6, the shutter member 21 includes a board 41 including the above-described rail piece 24, and first and second arm pieces 42, 43 standing from both left and right ends of the board 41. A shutter piece 44 extending downward from the tip of the second arm piece 43 located on the left side of the substrate 41 (downstream side in the sorting passage 10); and a pressure receiving piece standing upright from the left-right central portion of the substrate 41. 45.
The first and second arm pieces 42 and 43 are provided with shaft holes 46 and 47 (see FIG. 6) into which the second support shaft 25 is rotatably fitted.

  The shutter member 21 is arranged so that the substrate 41 is located between the base member 4 and the flapper 6 as shown in FIG. 7, and as shown in FIG. , 43 and the pressure receiving piece 45 are inserted into the second to fourth holes 48 to 50 of the base member 4, respectively. The first and second arm pieces 42 and 43 are inserted into the second and third holes 48 and 49, and the second support shaft 25 is passed through the shaft holes 46 and 47 so that the second support shaft 25.

  The shutter piece 44 extends below the rail piece 24 from the second arm piece 43, as shown in FIG. At the lower end of the shutter piece 44, a plate 44a extending toward the flapper 6 is provided. The plate 44a is located at a position facing the fifth hole 51 formed in the base member 4 as shown in FIG. 3, and the shutter member 21 swings about the second support shaft 25. Accordingly, the robot enters and exits the fifth hole 51 with this swinging operation. The fifth hole 51 is formed at a downstream portion of the sorting passage 10 as shown in FIG. Therefore, when the plate 44a enters the fifth hole 51, the sorting passage 10 is blocked by the plate 44a, and the medium passage 3 is closed. Further, the plate 44a retreats from the sorting passage 10 and comes out of the fifth hole 51, so that the sorting passage 10 is opened. When the shutter member 21 swings so as to close the selection passage 10, the rail piece 24 moves out of the selection passage 10 as shown in FIG.

  The pressure receiving piece 45 of the shutter member 21 is provided above the second support shaft 25 as shown in FIG. As shown in FIG. 6, a pressure-receiving piece 45 according to this embodiment includes a pressure-receiving plate 52 extending in parallel with the substrate 41 at a distal end thereof, and first and second engagement portions 53 projecting from both left and right sides. , 54. As shown in FIG. 7, the pressure receiving plate 52 is in contact with the driving lever 34 of the solenoid 35. The drive lever 34 constitutes a movable iron core of the solenoid 35, and is swingably supported by a frame 55 of the solenoid 35 with one end 34 a thereof facing the pressure receiving plate 52.

  A tension coil spring 56 is provided between the other end 34 b of the driving lever 34 and the frame 55. When the spring force of the tension coil spring 56 is applied to the other end 34 b of the driving lever 34, the driving lever 34 is urged in a direction in which the one end 34 a is separated from the pressure receiving plate 52. The solenoid 35 has an electromagnetic coil 57 that magnetically attracts the drive lever 34 against a resultant force of a spring force of a tension coil spring 56 and a spring force of a third torsion coil spring 32 described later. The electromagnetic coil 57 is energized when the circular medium 2 can pass through the sorting passage 10.

  In the case where the circular medium 2 is prevented from passing through the sorting passage 10, the power supply to the electromagnetic coil 57 is cut off. When the electromagnetic coil 57 is energized, the driving lever 34 presses the pressure receiving plate 52 of the shutter member 21, and the shutter member 21 swings against the spring force of the third torsion coil spring 32. When the pressure receiving plate 52 is pushed by the drive lever 34, the shutter piece 44 of the shutter member 21 retreats from the selection passage 10 to open the selection passage 10 as shown in FIG. Moving. That is, when the solenoid 35 is energized, the solenoid 35 enters an open state in which the shutter member 21 is held at the open position. When the power supply to the solenoid 35 is cut off in this open state, the open state of the solenoid 35 is canceled, the driving lever 34 is released, and the shutter member 21 enters a closed state in which the sorting passage 10 is closed. That is, the solenoid 35 can switch between an open state in which the shutter member 21 is held at the open position and a closed state in which the open state is canceled and the shutter member 21 is held at the closed position. In this embodiment, the solenoid 35 corresponds to a “switching mechanism” according to the present invention.

As shown in FIG. 6, the first and second engaging portions 53 and 54 of the pressure receiving piece 45 have notches 53a and 54a opened toward the base side (the substrate 41 side) of the pressure receiving piece 45. ing. As shown in FIG. 4, first and second legs 61, 62 of a third torsion coil spring 32 described later are engaged with the notches 53a, 54a.
The third torsion coil spring 32 is a so-called double torsion spring, and has a first coil portion 63 located on the right side in FIG. 5 and a second coil portion 64 located on the left side in FIG. 5, as shown in FIG. I have. These first and second coil portions 63 and 64 are held by the second support shaft 25 through the passage of the second support shaft 25.

The number of turns of the first coil part 63 is smaller than the number of turns of the second coil part 64. Therefore, the spring force generated by the first coil unit 63 is larger than the spring force generated by the second coil unit 64. In this embodiment, the third torsion coil spring 32 corresponds to the “plurality of torsion coil springs” in the present invention.
As shown in FIG. 4, the first leg 61 protruding from the right end of the first coil 63 is notched in the first engaging portion 53 in a state where the first leg 61 is inclined against the spring force of the first coil 63. The first engaging portion 53 is engaged with the first engaging portion 53. The intermediate portion of the first leg 61 passes between the stopper piece 65 provided on the convex plate 33 of the base member 4 and the back surface 4a of the base member 4. The stopper piece 65 comes into contact with the first leg 61 while the first leg 61 is restored to the initial position by the spring force of the first coil 63, and restricts the restoring of the first leg 61 beyond that.

The third leg 66 protruding from the left end of the first coil 63 is connected to the fourth leg 67 protruding from the right end of the second coil 64 via a connecting portion 68. The connecting portion 68 extends in the axial direction of the second support shaft 25 and is in contact with the back surface 4a of the base member 4.
The second leg portion 62 protruding from the left end of the second coil portion 64 is passed through the notch 54a of the second engagement portion 54 in a state inclined against the spring force of the second coil portion 64, and Is engaged with the engaging portion 54 of the second member.
For this reason, the third torsion coil spring 32 generates the first torsion by the combined force of the spring force of the first coil portion 63 and the spring force of the second coil portion 64 until the first leg 61 contacts the stopper piece 65. Then, the second engaging portions 53 and 54 are pushed in a direction away from the base member 4. After the first leg 61 contacts the stopper piece 65, the third torsion coil spring 32 moves the second engagement portion 54 away from the base member 4 only by the spring force of the second coil portion 64. Push. In this embodiment, the second coil portion 64 corresponds to a “partial torsion coil spring” according to the present invention.

The movement of the first and second engagement portions 53 and 54 in a direction away from the base member 4 causes the shutter member 21 to swing in a direction to close the sorting passage 10 as shown in FIG. 9B. Means that.
When the first leg portion 61 comes into contact with the stopper piece 65, the shutter piece 44 comes into contact with the circular medium 2 even if the circular medium 2 exists at a position facing the shutter piece 44 of the shutter member 21. There is no time. That is, as shown in FIG. 2, the first leg 61 contacts the stopper piece 65 before the shutter piece 44 comes into contact with the circular medium 2 b rolling on the downstream portion of the sorting passage 10.

  Next, the operation of the shutter 12 configured as described above will be described in detail with reference to FIGS. In the circular medium processing apparatus 1, the electromagnetic coil 57 of the solenoid 35 is energized during normal use, that is, when the circular medium 2 can be received. In this case, as shown in FIG. 7, the driving lever 34 of the solenoid 35 presses the pressure receiving plate 52 of the shutter member 21 and the shutter piece 44 of the shutter member 21 swings in the direction in which the shutter piece 44 retreats from the sorting passage 10. Move. The swing of the shutter member 21 causes the first and second engagement portions 53 and 54 to push the first leg 61 and the second leg 62 of the third torsion coil spring 32, and the third torsion coil This is performed against the spring force of the spring 32. As a result, the shutter member 21 is held at the open position retracted from the medium passage 3 against the spring force of the third torsion coil spring 32.

When the number of the circular media 2 supplied to the circular medium processing device 1 exceeds a predetermined number, the power supply to the solenoid 35 is cut off. When the current is cut off and the solenoid 35 is de-energized, the solenoid 35 is brought into a closed state in which the above-mentioned open state is eliminated, and the shutter member 21 is pushed by the spring force of the third torsion coil spring 32. Began rocking. When the shutter member 21 starts swinging from the open position, the shutter member 21 is pressed by all the torsion coil springs, in other words, the first and second coil portions 63 and 64.
When the first leg 61 moves toward the initial position in accordance with the swing of the shutter member 21, as shown in FIG. 8B, the first leg 61 comes into contact with the stopper piece 65 in the course of the movement. When the first leg 61 contacts the stopper piece 65, the plate 44a at the tip of the shutter piece 44 slightly enters the sorting passage 10. At this time, as shown in FIG. 2, even if the circular medium 2b exists in the downstream portion of the sorting passage 10, the plate 44a does not contact the circular medium 2.

  After the first leg 61 comes into contact with the stopper piece 65, the first leg 61 cannot press the first engagement portion 53. For this reason, as shown in FIG. 9, the shutter member 21 is pressed by a part of the torsion coil spring (the second coil portion 64) from the middle of the swinging process of the shutter member 21 to the end of the swinging. . As shown in FIG. 9B, the swing of the shutter member 21 is caused by the plate 44 a at the tip of the shutter piece 44 traversing the sorting passage 10, and the tip of the shutter piece 44 is positioned at the opening edge of the fifth hole 51. This is done until the contact can no longer proceed. When the plate 44a of the shutter piece 44 crosses the sorting passage 10, the medium passage 3 is closed. In this state, since the rail piece 24 of the shutter member 21 moves out of the sorting passage 10 to form an opening in the medium passage 3, all the circular media 2 remaining in the medium passage 3 at this time. Falls into the hole 15 of the flapper 6 and is sent to the medium return passage.

In the shutter 12 configured as described above, the spring force applied to the shutter member 21 from the third torsion coil spring 32 becomes relatively large when the shutter member 21 starts swinging from the open position. For this reason, the speed of the shutter member 21 when the shutter member 21 starts swinging becomes relatively high. Further, the spring force applied to the shutter member 21 from the third torsion coil spring 32 becomes relatively small during the course of the swing of the shutter member 21.
For this reason, as shown in FIG. 2, when the circular medium 2 b passing through the downstream portion of the sorting passage 10 is sandwiched between the shutter member 21 and the side wall (flapper 6) of the sorting passage 10, The frictional resistance acting on 2b is relatively small. In the state where the circular medium 2b is sandwiched in this way, the rolling power when the circular medium 2b advances in the medium passage 3 exceeds the frictional resistance, so that the circular medium 2b is separated from the shutter member 21 and used for sorting. It will now proceed in the passage 10.

Therefore, even though the shutter member 21 that opens and closes the medium passage 3 operates with good responsiveness, the shutter of the circular medium processing device in which the circular medium 2 is not sandwiched between the shutter member 21 and the side wall of the medium passage 3 Can be provided.
In this embodiment, the time when the pressing of the shutter member 21 by the first leg 61 ends is the time before the shutter piece 44 comes into contact with the circular medium 2. Therefore, when the shutter piece 44 comes into contact with the circular medium 2, the shutter piece 44 is pressed with a relatively small spring force, so that the speed of the circular medium 2 is hardly reduced at the time of this contact, and the above-described rolling power is hardly reduced. . As described above, since the circular medium 2 can move while maintaining a large rolling power, the circular medium 2 does not stop when the shutter piece 44 comes into contact, so that the circular medium 2 is more reliably prevented from being caught. Can be.

Among the plurality of torsion coil springs included in the third torsion coil spring 32 according to this embodiment, the torsion coil spring (the second coil) that presses the shutter member 21 from the middle of the swinging process of the shutter member 21 to the end of the swinging. The portion 64) has a smaller spring force than the other torsion coil springs (the first coil portion 63).
Therefore, when the shutter member 21 presses the circular medium 2 against the side wall (flapper 5) of the medium passage 3, the frictional resistance acting on the circular medium 2 is further reduced. Therefore, it is possible to provide a shutter of the circular medium processing device that is easily detached even if the circular medium 2 is sandwiched between the shutter member 21 and the side wall of the medium passage 3.

In this embodiment, the magnitude of the spring force of the plurality of torsion coil springs included in the third torsion coil spring 32 is realized by changing the number of turns of the first coil portion 63 and the second coil portion 64.
Therefore, a plurality of torsion coil springs having different spring forces can be easily manufactured, so that the manufacturing cost can be reduced, and an inexpensive shutter for a circular medium processing apparatus can be provided.

The shutter member 21 according to this embodiment has a rail piece 24 located alongside the medium passage 3. The rail piece 24 forms a part of the medium passage 3 when the shutter member 21 is located at the open position, and moves out of the medium passage 3 when the medium passage 3 is closed by the shutter member 21. I do. When the rail piece 24 moves out of the medium passage 3, an opening is formed in the medium passage 3, so that the circular medium 2 can be discharged out of the medium passage 3 through the opening.
For this reason, according to this embodiment, it is possible to configure a medium sorting device in which the circular medium 2 is discharged out of the medium passage 3 when the shutter 3 closes the medium passage 3.

  In the above-described embodiment, an example has been described in which the third torsion coil spring 32 having the first coil portion 63 and the second coil portion 64 constitutes “a plurality of torsion coil springs”. However, the “plurality of torsion coil springs” in the present invention is not limited to a double torsion spring having two coil portions, but can be constituted by a plurality of individually formed torsion coil springs. In this case, the number of torsion coil springs is not limited to two, and may be three or more.

  DESCRIPTION OF SYMBOLS 1 ... Circular medium processing apparatus, 2, 2b ... Circular medium, 3 ... Medium passage, 4 ... Base member, 6 ... Flapper, 12 ... Shutter, 21 ... Shutter member, 24 ... Rail piece, 32 ... Third torsion coil spring (Plurality of torsion coil springs), 35: solenoid (switching mechanism), 44: shutter piece, 65: stopper piece.

Claims (4)

A medium passage in which the circular medium rolls;
A shutter member that is swingably supported with respect to the medium passage and that opens and closes the medium passage by entering and exiting the medium passage with the swing operation;
A plurality of torsion coil springs for urging the shutter member in a direction in which the medium passage is closed,
A switching mechanism configured to be capable of switching between an open state in which the shutter member is held at an open position retracted from the medium passage against the spring force of the plurality of torsion coil springs and a closed state in which the open state has been eliminated; With a mechanism,
When the switching mechanism is switched from the open state to the closed state and the shutter member is pushed by the spring force of the plurality of torsion coil springs and starts swinging from the open position, the shutter members are all Pressed by a torsion coil spring,
A shutter for a circular medium processing apparatus, wherein the shutter member is pressed by a part of a torsion coil spring during the course of the swinging of the shutter member to the end of the swinging. The shutter of the circular medium processing device according to claim 1,
Among the plurality of torsion coil springs, a torsion coil spring that presses the shutter member from the middle of the process of swinging the shutter member to the end of the swing has a smaller spring force than other torsion coil springs. Shutter of the circular medium processing device. The shutter of the circular medium processing device according to claim 2,
The magnitude of the spring force of the plurality of torsion coil springs is realized by changing the number of turns of the coil unit, wherein the shutter is provided in a circular medium processing apparatus. The shutter of the circular medium processing device according to any one of claims 1 to 3,
The shutter member includes:
Having a rail piece located alongside the medium passage,
The rail piece forms a part of the medium passage when the shutter member is located at the open position, and moves out of the medium passage when the medium passage is closed by the shutter member. A shutter for a circular medium processing device, wherein

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