JP7024653B2 - Shutter of circular medium processing equipment - Google Patents

Description

The present invention relates to a shutter of a circular medium processing device that opens and closes a passage of a circular medium in a circular medium processing device that handles a circular medium such as a coin or a medal.

Conventionally, as a circular medium processing device for handling a circular medium such as a coin or a medal, there is a medium sorting device as described in, for example, Patent Document 1 and Patent Document 2. The medium sorting device sorts the circular medium in order to store it in the device or return it to the user, and includes a shutter that opens and closes the medium passage when changing the destination of the circular medium. The shutter includes a shutter member that swings in and out of the medium passage, and a drive source that drives the shutter member. When the shutter member exits the medium passage, the medium passage opens, 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 the medium passage 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 drive source for driving such a shutter member, a solenoid is often used as disclosed in Patent Document 1. In order to urge a swinging member such as a shutter member, a torsion coil spring may be used as disclosed in Patent Document 2. Further, a device such as a combination of Patent Document 1 and Patent Document 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 sorting device, the shutter member is urged by the torsion coil spring in the direction of closing 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. It will be like.

In a medium sorting device provided with such a torsion coil spring and a solenoid, in a normal state, that is, in a circular medium acceptance state, the solenoid is energized and becomes an exciting state, and the shutter member resists the spring force of the torsion coil spring. It is in a state of being retracted from the medium passage. When the circular medium is sent through the medium passage by, for example, a preset number of sheets from this state, the energization 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. In this way, the shutter member protrudes into the medium passage and the medium passage is blocked by the shutter member, so that the circular medium that has been rolled is not sent any more.

Japanese Unexamined Patent Publication No. 2004-1993338. Japanese Unexamined Patent Publication No. 2000-348231.

In a medium sorting device provided with a torsion coil spring and a solenoid, there is a possibility that a problem may occur due to the shutter member. This problem occurs when the protruding operation is delayed when the shutter member is projected into the medium passage. 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 clogged 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 sent must be stopped, and the clogged circular medium must be removed from the medium passage.

As a countermeasure against the slow 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 speed up the response of the shutter member. However, when this configuration is adopted, 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. Will be sandwiched even more firmly. That is, the circular medium slips with respect to the shutter member, so that pinching cannot be avoided.

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

In order to achieve this object, the shutter of the circular medium processing apparatus according to the present invention is swingably supported with respect to the medium passage through which the circular medium rolls and the medium passage, and is said to accompany the swinging operation. A shutter member that moves in and out of the medium passage to open and close the medium passage, a plurality of torsion coil springs that urge the shutter member in a direction in which the medium passage closes, and a spring force of the plurality of torsion coil springs in the shutter member. The switching mechanism is provided with a switching mechanism configured to be able to switch between an open state held in an open position retracted from the medium passage and a closed state in which the open state is canceled, and the switching mechanism is released from the open state. When the shutter member is switched to the closed state and the shutter member is pushed by the spring force of the plurality of torsion coil springs to start swinging from the open position, the shutter member is pushed by all the torsion coil springs and said. From the middle of the process of swinging the shutter member to the end of swinging, the shutter member is characterized by being pushed by a part 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 pushes the shutter member from the middle of the process in which the shutter member swings to the end of the swing is another torsion. The spring force may be smaller than that of the coil spring.

In the present invention, in the shutter of the circular medium processing apparatus, the magnitude of the spring force of the plurality of torsion coil springs may be realized by changing the number of turns of the coil portion.

INDUSTRIAL APPLICABILITY In the shutter of the circular medium processing apparatus, the shutter member has a rail piece located side by side in the medium passage, and the rail piece has a state in which the shutter member is located in the open position. It may form a part of the medium passage and 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 to the shutter member from the torsion coil spring 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 from the middle of the process in which the shutter member swings. Therefore, 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, and the frictional resistance causes the circular medium to travel in the medium passage. Since the rolling power becomes superior, the circular medium comes off from the shutter member.
Therefore, it is possible to provide a shutter of a circular medium processing apparatus in which a circular medium is not sandwiched between the shutter member and the side wall of the medium passage even though the shutter member that opens and closes the medium passage operates with good responsiveness. can.

It is a side view which shows the schematic structure of the shutter of the circular medium processing apparatus which concerns on this invention. It is a side view of the base member from which a flapper was removed. It is a side view which shows the opening and closing structure of a shutter in an enlarged manner. It is a perspective view which shows the connection part of a shutter member and a torsion coil spring in an enlarged manner. It is a side view of a shutter member. It is a perspective view of a shutter member. It is sectional drawing of the main part which shows the state which the shutter member is located in the retracted position. It is sectional drawing of the main part which shows the state which the 1st leg part came in contact with a stopper piece. It is sectional drawing of the main part which shows the state which the swing of a shutter member is finished.

Hereinafter, an embodiment of the shutter of the circular medium processing apparatus according to the present invention will be described in detail with reference to FIGS. 1 to 9.
The circular medium processing device 1 shown in FIG. 1 is, for example, 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 a coin or a medal passes. is doing. The medium passage 3 is attached to a groove 5 (see FIG. 2) provided in the base member 4 which is a housing of the circular medium processing device 1 and a flapper 6 or the like so as to cover the opening of the groove 5. Is formed by.

The medium passage 3 according to this embodiment is a drop passage 8 extending downward from the medium inlet 7 opening at the front upper end portion of the circular medium processing device 1, and after the circular medium processing device 1 from the lower end of the drop passage 8. It is composed of a sorting passage 10 extending diagonally to the medium outlet 9 located at the lower end of the side. After dropping the drop passage 8, the circular medium 2 rolls in the sorting passage 10 toward the medium outlet 9.
The sorting passage 10 is provided with a sorting mechanism 11 for discharging a circular medium having a diameter smaller than that of 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 by the upper end portion 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 swinging end portion of the flapper 6 is pressed against the base member 4.
At the center of the flapper 6, a circular medium having a diameter smaller than that of the regular circular medium 2 and a circular medium 2 remaining in the sorting passage 10 when the shutter 12 described later closes the sorting passage 10 are discharged. A hole 15 for the purpose 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 and a pressing lever 23 (see FIG. 3) having a pressing portion 22 protruding into the sorting passage 10. It is composed of.
The shutter member 21 is a component that constitutes a part of the shutter 12 described later, has a strip-shaped rail piece 24 located side by side in the sorting passage 10, and swings to the base member 4 via the second support shaft 25. It is supported freely. The second support shaft 25 is supported by the base member 4 in a state of extending parallel to the sorting passage 10. More specifically, the second support shaft 25 is arranged along the back surface 4a (the surface opposite to the flapper 6) of the base member 4 as shown in FIG. 7, and as shown in FIG. 3, the second support shaft 25 is arranged. Both ends are rotatably supported by bearings 26 and 27 of the base member 4.

The shutter member 21 is held at either the open position shown in FIG. 7 or the closed position shown in FIG. 9 by functioning as a part of the shutter 12 described later. 7 to 9 are cross-sectional views for stepwise explaining the swing of the shutter member 21, and in these views, the breaking position of FIG. 9A is the position shown by the line AA in FIG. , (B) The breaking position in FIG. 3 is the position shown by the line BB in FIG.

The rail piece 24 is for eliminating the circular medium 2a {see FIG. 7 (B)} having an outer diameter smaller than that of 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 portion of the groove 5 in a state where the shutter member 21 is located at the open position, and cooperates with the upper end portion of the groove 5. It constitutes the upper end of the sorting passage 10. As shown in FIG. 1, the upper edge of the hole 15 of the flapper 6 described above is located above the lower end of the rail piece 24. 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 diameter smaller than that of the regular circular medium 2 is the rail piece. The width is not guided by 24.

As shown in FIG. 3, the pressing lever 23 is arranged on the back surface 4a 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 and is passed through a first hole 28 (see FIG. 2) formed in the base member 4 to face 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 portion 31a at one end of the second torsion coil spring 31 pushes the convex plate 33 of the base member 4, and the leg portion 31b at the other end pushes the back surface (the surface opposite to the flapper 6) of the pressing lever 23. There is. Therefore, the circular medium 2 passing through the sorting passage 10 is pushed toward the flapper 6 by the pressing portion 22 when passing beside the pressing portion 22. The movement of the regular circular medium 2 pushed by the pressing portion 22 toward the flapper 6 side is restricted at the lower end portion and the upper end portion, respectively.

The lateral movement of the lower end of the circular medium 2 is restricted by the flapper 6. The lateral movement of the upper end of the circular medium 2 is restricted by the rail piece 24. As a result, even if the regular circular medium 2 is pushed by the pressing portion 22, it does not fall into the hole 15 of the flapper 6 and rolls through the sorting passage 10. However, the circular medium 2a {see FIG. 7 (B)} having a smaller diameter than the regular circular medium 2 is pushed by the pressing portion 22 because the lateral movement of the upper end portion is not restricted by the rail piece 24. As a result, it passes under the rail piece 24 and falls 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 the medium return passage.

The shutter 12 is for opening and closing the sorting passage 10. When the sorting passage 10 is closed, for example, the number of circular media 2 charged into the circular medium processing device 1 exceeds a predetermined number. In order to indicate the direction in explaining the configuration of the shutter 12, for convenience, the shutter 12 is viewed from the back side of the base member 4 as shown in FIG. 3 in a posture in which the circular medium processing device 1 can be used. Shown in the direction.
As shown in FIGS. 3 and 7, the shutter 12 according to this embodiment includes the above-mentioned shutter member 21, a solenoid 35 having a drive lever 34 connected to an upper end portion of the shutter member 21, and a second shutter member 21. It is provided with a third torsion coil spring 32 that is held by 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 into a predetermined shape. As shown in FIGS. 5 and 6, the shutter member 21 includes a substrate 41 including the rail piece 24 described above, and first and second arm pieces 42, 43 standing up from both ends of the substrate 41 in the left-right direction. And the shutter piece 44 extending downward from the tip of the second arm piece 43 located on the left side of the board 41 (downstream side in the sorting passage 10), and the pressure receiving piece standing up from the center part in the left-right direction of the board 41. It has 45 and.
Shaft holes 46, 47 (see FIG. 6) into which the second support shaft 25 is rotatably fitted are bored in the first and second arm pieces 42, 43.

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 the first and second arm pieces 42 are arranged 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 to pass the second support shaft 25. It is connected to 25.

As shown in FIG. 7B, the shutter piece 44 extends downward from the second arm piece 43 to the rail piece 24. A plate 44a extending toward the flapper 6 is provided at the lower end of the shutter piece 44. As shown in FIG. 3, the plate 44a is positioned at a position facing the fifth hole 51 formed in the base member 4, and the shutter member 21 swings around the second support shaft 25. As a result, it goes in and out of the fifth hole 51 with this rocking operation. As shown in FIG. 2, the fifth hole 51 is formed in the downstream portion of the sorting passage 10. 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 exits from the fifth hole 51, so that the sorting passage 10 is opened. When the shutter member 21 swings so that the sorting passage 10 closes, the rail piece 24 moves out of the sorting passage 10 as shown in FIG.

As shown in FIG. 5, the pressure receiving piece 45 of the shutter member 21 is provided above the second support shaft 25. As shown in FIG. 6, the pressure receiving piece 45 according to this embodiment includes a pressure receiving plate 52 extending in parallel with the substrate 41 at the tip portion, and first and second engaging portions 53 projecting from the left and right side portions. , 54 and. As shown in FIG. 7, the pressure receiving plate 52 is in contact with the drive lever 34 of the solenoid 35. The drive lever 34 constitutes a movable iron core of the solenoid 35, and is swingably supported by the frame 55 of the solenoid 35 with one end portion 34a facing the pressure receiving plate 52.

A tension coil spring 56 is provided between the other end 34b of the drive lever 34 and the frame 55. By applying the spring force of the tension coil spring 56 to the other end portion 34b of the drive lever 34, the drive lever 34 is urged in the direction in which one end portion 34a is separated from the pressure receiving plate 52. The solenoid 35 has an electromagnetic coil 57 that magnetically attracts the drive lever 34 against the resultant force of the spring force of the tension coil spring 56 and the spring force of the 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.

When the circular medium 2 is prevented from passing through the sorting passage 10, the energization of the electromagnetic coil 57 is cut off. When the electromagnetic coil 57 is energized, the drive lever 34 pushes 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, as shown in FIG. 7, the shutter piece 44 of the shutter member 21 recedes from the sorting passage 10 to open the sorting passage 10, and the shutter member 21 is in the open position. Moving. That is, when the solenoid 35 is energized, the shutter member 21 is held in the open position and is in an open state. When the energization of the solenoid 35 is cut off in this open state, the open state of the solenoid 35 is canceled, the drive lever 34 is released, and the shutter member 21 is in the closed state of closing the sorting passage 10. That is, the solenoid 35 can switch between an open state in which the shutter member 21 is held in the open position and a closed state in which the open state is canceled and the shutter member 21 is held in the closed position. In this embodiment, the solenoid 35 corresponds to the "switching mechanism" in 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 (board 41 side) of the pressure receiving piece 45. ing. As shown in FIG. 4, the first and second leg portions 61 and 62 of the third torsion coil spring 32, which will be described later, are engaged in the notches 53a and 54a.
The third torsion coil spring 32 is a so-called double torsion spring, and as shown in FIG. 5, 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. There is. These first and second coil portions 63 and 64 are held by the second support shaft 25 by penetrating the second support shaft 25.

The number of turns of the first coil portion 63 is smaller than the number of turns of the second coil portion 64. Therefore, the spring force generated in the first coil portion 63 is larger than the spring force generated in the second coil portion 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 portion 61 protruding from the right end of the first coil portion 63 is notched in the first engaging portion 53 in a state of being inclined against the spring force of the first coil portion 63. It is passed through 53a and is engaged with the first engaging portion 53. The intermediate portion of the first leg portion 61 is passed 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 portion 61 while the first leg portion 61 is restored to the initial position by the spring force of the first coil portion 63, and further restricts the restoration of the first leg portion 61.

The third leg portion 66 protruding from the left end of the first coil portion 63 is connected to the fourth leg portion 67 protruding from the right end of the second coil portion 64 via the 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 engaging portion 54 in a state of being inclined against the spring force of the second coil portion 64, and is passed through the second. It is engaged with the engaging portion 54 of.
Therefore, the third torsion coil spring 32 is first produced by the resultant 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 portion 61 comes into contact with the stopper piece 65. And the second engaging portions 53 and 54 are pushed away from the base member 4. Further, after the first leg portion 61 comes into contact with the stopper piece 65, the third torsion coil spring 32 moves the second engaging 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 the "partial torsion coil spring" in the present invention.

When the first and second engaging portions 53 and 54 move away from the base member 4, the shutter member 21 swings in the direction of closing 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, even if the circular medium 2 is present at a position facing the shutter piece 44 of the shutter member 21, the shutter piece 44 comes into contact with the circular medium 2. It is a time when there is no such thing. That is, as shown in FIG. 2, the first leg portion 61 comes into contact with the stopper piece 65 before the shutter piece 44 comes into contact with the circular medium 2b rolling downstream 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. 7 to 9. In the circular medium processing device 1, the electromagnetic coil 57 of the solenoid 35 is energized during normal use, that is, when the circular medium 2 can be accepted. In this case, as shown in FIG. 7, the drive lever 34 of the solenoid 35 pushes the pressure receiving plate 52 of the shutter member 21, and the shutter member 21 swings in the direction in which the shutter piece 44 of the shutter member 21 retracts from the sorting passage 10. Move. In the swing of the shutter member 21, the first and second engaging portions 53 and 54 push the first leg portion 61 and the second leg portion 62 of the third torsion coil spring 32, and the third torsion coil It is performed against the spring force of the spring 32. As a result, the shutter member 21 is held in an open position retracted from the medium passage 3 against the spring force of the third torsion coil spring 32.

When the number of circular media 2 charged into the circular medium processing device 1 exceeds the specified number, the energization of the solenoid 35 is cut off. When the energization is cut off and the solenoid 35 is in a non-excited state, the solenoid 35 is in a closed state in which the above-mentioned open state is canceled, and the shutter member 21 is pushed by the spring force of the third torsion coil spring 32. And start rocking. When the shutter member 21 starts swinging from the open position, the shutter member 21 is pushed by all torsion coil springs, in other words, the first and second coil portions 63, 64.
When the first leg portion 61 moves toward the initial position as the shutter member 21 swings, it comes into contact with the stopper piece 65 in the middle of the moving process, as shown in FIG. 8B. When the first leg portion 61 comes into contact with the stopper piece 65, the plate 44a at the tip of the shutter piece 44 slightly enters the sorting passage 10. At this time, even if the circular medium 2b is present in the downstream portion of the sorting passage 10 as shown in FIG. 2, the plate 44a does not come into contact with the circular medium 2.

After the first leg portion 61 comes into contact with the stopper piece 65, the first leg portion 61 cannot push the first engaging portion 53. Therefore, as shown in FIG. 9, the shutter member 21 is pushed by a part of the torsion coil spring (second coil portion 64) from the middle of the process in which the shutter member 21 swings to the end of the swing. .. As shown in FIG. 9B, the plate 44a at the tip of the shutter piece 44 crosses the sorting passage 10 and the tip of the shutter piece 44 is at the opening edge of the fifth hole 51. It is done until contact and no further progress is possible. The medium passage 3 is closed by the plate 44a of the shutter piece 44 crossing the sorting passage 10. In this state, 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, so that all the circular media 2 remaining in the medium passage 3 at this time are formed. Drops 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. Therefore, 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 from the middle of the process in which the shutter member 21 swings.
Therefore, as shown in FIG. 2, when the circular medium 2b 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 circular medium 2b is sandwiched between the shutter member 21 and the side wall (flapper 6) of the sorting passage 10. The frictional resistance acting on 2b becomes relatively small. In the state where the circular medium 2b is sandwiched in this way, the rolling power when the circular medium 2b travels in the medium passage 3 becomes superior to the frictional resistance, so that the circular medium 2b is separated from the shutter member 21 for sorting. You will go through 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, it is in a state of being pushed by a relatively small spring force, so that the speed of the circular medium 2 is unlikely to decrease at the time of this contact, and the above-mentioned rolling power is unlikely to decrease. .. Since the circular medium 2 can proceed while maintaining a large rolling power in this way, the circular medium 2 does not stop when the shutter pieces 44 come into contact with each other, so that the circular medium 2 is more reliably prevented from being pinched. Can be done.

Of the plurality of torsion coil springs included in the third torsion coil spring 32 according to this embodiment, the torsion coil spring (second coil) that pushes the shutter member 21 from the middle of the process in which the shutter member 21 swings to the end of the swing. The portion 64) has a smaller spring force than the other torsion coil spring (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 becomes even smaller. Therefore, even if the circular medium 2 is sandwiched between the shutter member 21 and the side wall of the medium passage 3, it is possible to provide a shutter of a circular medium processing device that is easily removed.

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, since a plurality of torsion coil springs having different spring forces can be easily manufactured, the manufacturing cost can be kept low, and a shutter of an inexpensive circular medium processing device can be provided.

The shutter member 21 according to this embodiment has a rail piece 24 located side by side with the medium passage 3. The rail piece 24 constitutes a part of the medium passage 3 in a state where the shutter member 21 is located in the open position, and moves out of the medium passage 3 in a state where the medium passage 3 is closed by the shutter member 21. do. When the rail piece 24 moves out of the medium passage 3, an opening is created in the medium passage 3, so that the circular medium 2 can be discharged out of the medium passage 3 through the opening.
Therefore, according to this embodiment, it is possible to configure a medium sorting device in which the circular medium 2 is discharged to the outside of the medium passage 3 when the medium passage 3 is closed by the shutter member 21.

In the above-described embodiment, an example is shown in which a third torsion coil spring 32 having a first coil portion 63 and a second coil portion 64 constitutes a “plurality of torsion coil springs”. However, the "plurality of torsion coil springs" referred to in the present invention is not limited to the double torsion spring having two coil portions, and can be configured 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.

1 ... Circular medium processing device, 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 (Multiple torsion coil springs), 35 ... Solenoid (switching mechanism), 44 ... Shutter piece, 65 ... Stopper piece.

Claims (4)

A medium passage through which a circular medium rolls,
A shutter member that is swingably supported with respect to the medium passage and moves in and out of the medium passage to open and close the medium passage as the swinging motion occurs.
A plurality of torsion coil springs that urge the shutter member in the direction in which the medium passage is closed, and
Switching configured so that the shutter member can be switched between an open state in which the shutter member is held in 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 is canceled. Equipped 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 to start swinging from the open position, the shutter member is all. Pushed by a torsion coil spring,
A shutter of a circular medium processing device, characterized in that the shutter member is pressed by a part of a torsion coil spring from the middle of the process of swinging the shutter member to the end of swinging. In the shutter of the circular medium processing apparatus according to claim 1,
Among the plurality of torsion coil springs, the torsion coil spring that pushes the shutter member from the middle of the process in which the shutter member swings to the end of the swing is characterized in that the spring force is smaller than that of other torsion coil springs. Shutter of the circular medium processing device. In the shutter of the circular medium processing apparatus according to claim 2.
A shutter of a circular medium processing apparatus, characterized in that the magnitude of the spring force of the plurality of torsion coil springs is realized by changing the number of turns of the coil portion. In the shutter of the circular medium processing apparatus according to any one of claims 1 to 3.
The shutter member is
It has rail pieces that are located side by side in the medium passage.
The rail piece constitutes a part of the medium passage in a state where the shutter member is located in the open position, and moves out of the medium passage in a state where the medium passage is closed by the shutter member. A shutter of a circular medium processing apparatus, characterized in that it is used.

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