JP7024652B2 - Mounting structure of lever for circular medium processing equipment - Google Patents

Description

The present invention relates to a mounting structure for a lever for a circular medium processing device that swingably supports a lever for a circular medium processing device that comes into contact with a circular medium such as a coin or a medal.

Conventionally, a circular medium processing apparatus that handles a circular medium such as a coin or a medal has a swing-type lever that protrudes into a medium passage through which the circular medium passes and comes into contact with the circular medium, as described in Patent Document 1, for example. It is equipped with. The lever disclosed in Patent Document 1 is used as a detector of a sensor that detects the passage of a circular medium. In addition to being used as the detector described above, this type of swinging lever may be used to apply a braking force to the circular medium or to push the circular medium in the thickness direction.

The lever disclosed in Patent Document 1 is swingably attached to the wall of the medium passage via a support shaft serving as a swing center, and one end thereof is inside the medium passage by a torsion coil spring provided on the support shaft. It is urged in the direction of being inserted into.
The support axis is supported by the wall of the medium passage in a direction orthogonal to the thickness direction of the circular medium passing through the medium passage and extending in a direction orthogonal to the extending direction of the medium passage.
One end of the lever is provided with a contact portion that is inserted into the medium passage. This contact is inserted into an opening formed in the wall of the medium passage and enters the medium passage. The other end of the lever is provided with a detected portion detected by the sensor.

The torsion coil spring consists of a coil part through which the support shaft penetrates, one leg that protrudes from one end of the coil part and pushes the wall of the medium passage, and the other leg that protrudes from the other end of the coil part and pushes one end of the lever. Has a part.
The work of attaching the lever configured in this way to the wall of the medium passage is performed by the operator holding the lever assembly including the lever and the support shaft with a finger. A torsion coil spring is pre-mounted on the support shaft. This lever assembly is attached to the wall of the medium passage by engaging a support shaft with a bearing provided on the wall of the medium passage.

The bearing is generally formed by integral molding on the wall of the medium passage, and has a structure in which the support shaft slides in a direction parallel to the wall of the medium passage and intersects the axial direction to engage with the bearing. The reason for adopting such a structure is that the bearing is molded by using a mold for molding the wall of the medium passage. This mold is configured to open and close in the thickness direction of the wall of the medium passage. In order to form a bearing with such a mold, it is necessary to form the bearing so as to sandwich the support shaft from one side and the other side in the thickness direction of the wall. Such bearings have a structure in which the support shafts are translated and engaged along the wall.

Japanese Unexamined Patent Publication No. 2000-348231

When a lever assembly having a torsion coil spring is translated along the wall of a medium passage and attached to a bearing, several problems arise as follows. The first problem is that the torsion coil spring is supported by the support shaft in an unstable state where the support shaft is simply passed through the coil portion of the torsion coil spring. The spring will come off.

The second problem is that the tip of one leg of the torsion coil spring rubs against the wall as the lever assembly is slid along the wall of the wall of the medium passage to engage the bearing with the bearing. The problem is that the wall surface (mounting surface) is damaged.
Such a problem can be solved to some extent by performing the mounting work while the operator holds one leg of the torsion coil spring with a finger.

However, when installing a small lever that is the same size as the operator's fingertip, the torsion coil spring that urges this lever is also small and thin, so the torsion coil spring is pushed by the finger and deformed, which is the original Function may be impaired. For this reason, the mounting work performed by the operator while pressing the torsion coil spring with a finger must be performed carefully, which is extremely complicated.

An object of the present invention is to simplify the mounting work of a lever assembly having a torsion coil spring while preventing damage to the torsion coil spring and damage to the mounting surface, and it is easy to attach the lever assembly to the wall of the medium passage. It is to provide the mounting structure of the lever for the circular medium processing apparatus which can be mounted on the.

In order to achieve this object, the mounting structure of the lever for the circular medium processing device according to the present invention is detachably supported by a wall member that is a part of the wall of the medium passage through which the circular medium passes and the wall member. It has a shaft, a lever that swings around the shaft so as to move in and out of the medium passage, and a coil portion through which the shaft penetrates, and one leg pushes the wall member and the other. The leg is provided with a torsion coil spring that urges the lever in a direction of entering the medium passage by pushing the lever, and the lever has an intermediate portion of the one leg of the torsion coil spring. It has a temporary holding portion that movably supports the wall member in a direction opposite to the direction in which the spring force acts, and the wall member comes into contact with the tip of one of the legs in the process of attaching the lever to the wall member. It has a pressure receiving portion that receives the spring force of the torsion coil spring from the tip, and the one leg portion of the torsion coil spring is detached from the temporary holding portion when the lever is attached to the wall member. It is characterized by pushing a wall member.

In the present invention, in the mounting structure of the lever for the circular medium processing device, the wall member moves in parallel with the wall surface along the medium passage in a direction in which the axis intersects the axial direction along the wall surface. It may have a bearing portion to be mounted.

In the present invention, in the mounting structure of the lever for the circular medium processing device, the pressure receiving portion is provided on a protrusion projecting from the wall surface, and the pressure receiving portion is from the protruding end side of the protrusion to the wall surface side. It is inclined and extends to a position away from the temporary holding portion in the axial direction of the shaft, and the one leg portion is along the pressure receiving portion by coming into contact with the pressure receiving portion in the process of attaching the lever to the wall member. It may move in the axial direction.

In the present invention, in the mounting structure of the lever for the circular medium processing device, the temporary holding portion is provided at a position aligned with the shaft of the lever, and the one leg portion is pressed against the pressure receiving portion. It may move in a direction opposite to the direction in which the spring force of the torsion coil spring acts and separate from the temporary holding portion.

In the present invention, one leg of the torsion coil spring is pressed against the temporary holding portion, and the torsion coil spring is held by the shaft with the other leg pressed against the lever. This torsion coil spring is held by the lever by its own spring force. Therefore, when the lever is slid parallel to the wall surface of the wall member that becomes the wall of the medium passage, one leg of the torsion coil spring does not come into contact with the wall surface. There is no need to hold it in.

Also, by attaching this lever to the wall member, one leg of the torsion coil spring will come off from the temporary holding part and push the wall member, so there is no need to remove one leg from the temporary holding part. be.
Therefore, it is possible to simplify the mounting work of the lever assembly having the torsion coil spring while preventing the torsion coil spring from being damaged and the mounting surface from being scratched, and it is possible to easily mount the lever assembly on the wall of the medium passage. A possible mounting structure for a circular medium processing device lever can be provided.

It is a side view which shows the structure of the circular medium processing apparatus by 1st Embodiment. It is a side view which shows the push lever attachment part of a flapper enlarged. FIG. 2 is a sectional view taken along line III-III in FIG. It is a perspective view which shows the bearing part of a flapper. It is a side view of a pressing lever. It is a bottom view of a pressing lever. It is a perspective view of a pressing lever. It is a perspective view which shows a part of a pressing lever and a flapper. It is a perspective view which shows a part of a pressing lever and a flapper. It is a top view which shows the state which one leg part of a torsion coil spring is in contact with a columnar protrusion. FIG. 10 is a sectional view taken along line XI-XI in FIG. It is a perspective view which shows a part of a pressing lever and a flapper. It is a side view which shows the structure of the base member by 2nd Embodiment. It is a side view which shows the lever attachment part of a base member in an enlarged manner. FIG. 14 is a cross-sectional view taken along the line XV-XV in FIG. It is a perspective view which shows the bearing part of a base member. It is a side view of a part of a support shaft and a lever. It is a top view of a part of a support shaft and a lever. It is a front view of a support shaft and a lever. It is a perspective view of a support shaft and a lever. It is sectional drawing which shows the state in the middle of the mounting work. It is sectional drawing which shows the state which the mounting work is completed.

(First Embodiment)
Hereinafter, an embodiment of a mounting structure for a lever for a circular medium processing device according to the present invention will be described in detail with reference to FIGS. 1 to 12.
The circular medium processing device 1 shown in FIG. 1 is a device such as a coin sorting device or a medal sorting device, and has a medium passage 3 through which a circular medium 2 such as a coin or a medal passes. The medium passage 3 is formed by a base member 4 that is a housing of the circular medium processing device 1 and a flapper 5 attached to the base member 4, and is a medium that opens to the front upper end portion of the circular medium processing device 1. It extends from the inlet 6 to the medium outlet 7 that opens at the lower end of the rear side.

The flapper 5 constitutes a "wall member" of the lever mounting structure 11 according to the present invention. The flapper 5 is swingably supported by the base member 4 via a shaft 12, and is pressed against the base member 4 by the spring force of the torsion coil spring 13.
In the middle of the medium passage 3, a sorting mechanism 14 for selecting a circular medium 2 having an outer diameter smaller than that of the regular circular medium 2 is provided. The sorting mechanism 14 can have the same configuration as the sorting mechanism described in Patent Document 1, for example.

The sorting mechanism 14 according to this embodiment includes a gauge for sorting small diameter media (not shown) provided on the base member 4, and a pressing lever 15 for pushing the circular medium 2 toward the gauge. .. The gauge is formed so as to form a part of the side wall of the medium passage 3. The regular circular medium 2 passes through the medium passage 3 with the upper end thereof pressed against the gauge by being pushed by the pressing lever 15. The non-genuine circular medium passes under the gauge and falls out of the medium passage 3 when pushed by the pressing lever 15.

As shown in FIG. 1, the pressing lever 15 is swingably attached to the outer surface 5a of the flapper 5 on the side opposite to the medium passage 3 so as to enter and exit the medium passage 3. The pressing lever 15 is urged by a torsion coil spring 17, which will be described later, in a direction in which its swinging end is inserted into the hole 16 of the flapper 5.
The pressing lever 15 according to this embodiment is formed of a plastic material into a predetermined shape, and has a plurality of integrally molded functional portions. The plurality of functional parts are from the support shaft 21 extending in the vertical direction in FIG. 2, the lever body 22 extending from the middle part of the support shaft 21 to one side on the right side in FIG. 2, and the middle part of the support shaft 21. An arm 23 extending to the other side. In FIG. 2, the right side is the downstream side in the transport direction of the circular medium 2 sent in the medium passage 3, and the left side is the upstream side in the transport direction. The pressing lever 15 swings around the support shaft 21.

The support shaft 21 is detachably and rotatably supported by the first and second bearings 24 and 25 projecting from the outer surface 5a of the flapper 5, and as shown in FIG. 1, the outer surface 5a of the flapper 5 It extends in a direction along the direction perpendicular to the longitudinal direction of the medium passage 3 (the direction inclined downward to the right in FIG. 1). One end of the support shaft 21 is supported by the first bearing 24, and the other end of the support shaft 21 is supported by the second bearing 25.

As shown in FIG. 4, the first and second bearings 24 and 25 are composed of a plurality of bearing pieces 26 to 29 projecting from the surface of the flapper 5. These bearing pieces 26 to 29 are molded using a mold (not shown) for molding the flapper 5, and are arranged at intervals in the axial direction of the support shaft 21.
The first bearing 24 is an inner bearing in which the outer bearing piece 26 with which the half portion of the support shaft 21 in the direction away from the flapper 5 is engaged and the half portion of the support shaft 21 in the direction close to the flapper 5 are engaged. It is composed of pieces 27 and pieces. The inner bearing piece 27 is positioned on the center side of the support shaft 21 with respect to the outer bearing piece 26.

The second bearing 25 is an inner bearing in which the outer bearing piece 28 with which the half portion of the support shaft 21 in the direction away from the flapper 5 is engaged and the half portion of the support shaft 21 in the direction close to the flapper 5 are engaged. It is composed of pieces 29 and. The inner bearing piece 29 is positioned on the center side of the support shaft 21 with respect to the outer bearing piece 28.
The two bearing pieces 26, 27 of the first bearing 24 and the two bearing pieces 28, 29 of the second bearing 25 are both opened toward the downstream side in the transport direction described above, and are supported from this downstream side. The shaft 21 is formed to engage.

The support shaft 21 engages with the outer bearing pieces 26, 28 and the inner bearing pieces 27, 29, respectively, by translating along the outer surface 5a of the flapper 5 in a direction intersecting the axial direction. Can be installed. At this time, the direction in which the support shaft 21 moves in parallel is the direction from the downstream side to the upstream side in the above-mentioned transport direction. In this embodiment, the outer surface 5a of the flapper 5 corresponds to the "wall surface" in the invention according to claim 2, and the first and second bearings 24 and 25 correspond to the "bearing portion" in the present invention. ..

On the upstream side of the first and second bearings 24 and 25 on the outer surface 5a of the flapper 5 in the transport direction described above, a columnar protrusion 32 that comes into contact with one leg 31 (see FIG. 2) of the torsion coil spring 17 described later. Is projected. An inclined surface 32a is formed at the protruding side end of the columnar protrusion 32. The inclined surface 32a is inclined from the protruding end side of the columnar projection 32 to the outer surface 5a side of the flapper 5 and toward the second bearing 25 side in the axial direction of the support shaft 21. The configuration of the inclined surface 32a will be described later.

As shown in FIGS. 5 and 7, the lever body 22 of the pressing lever 15 has first and second protrusions 33 and 34 arranged at predetermined intervals in the axial direction of the support shaft 21, and these protrusions. It has a spring engaging portion 35 extending in the axial direction of the support shaft 21 between 33 and 34. As shown in FIG. 3, the first and second protrusions 33, 34 are inserted into the medium passage 3 through the hole 16 of the flapper 5, and the inclined surface 33a, which comes into contact with the circular medium 2, 34a is formed. Of the first and second protrusions 33 and 34, the first protrusion 33 located on the first bearing 24 side in the axial direction of the support shaft 21 is the arm 23 described later in the axial direction of the support shaft 21. It is provided at the same position.

The spring engaging portion 35 is a portion of the pressing lever 15 that receives the spring force of the torsion coil spring 17, which will be described later. The spring engaging portion 35 is formed with a slit 37 for inserting the other leg portion 36 of the torsion coil spring 17.
The torsion coil spring 17 is composed of a coil portion 38 through which a support shaft 21 penetrates, one leg portion 31 protruding from one end of the coil portion 38, and the other leg portion 36 protruding from the other end of the coil portion 38. Has been done. The coil portion 38 is held by the support shaft 21 in a state in which the support shaft 21 penetrates. Further, as shown in FIG. 5, the coil portion 38 is positioned adjacent to the spring engaging portion 35 of the pressing lever 15. The base portion 31a of one leg portion 31 extends in a direction orthogonal to the axial direction of the support shaft 21. The tip portion 31b of one leg portion 31 extends so that the tip thereof points toward the second bearing 25 side in the axial direction of the support shaft 21.
The tip of the other leg 36 of the torsion coil spring 17 is bent in a U shape and folded back.

As shown in FIGS. 5 and 6, the arm 23 of the pressing lever 15 is formed in a plate shape extending in a direction orthogonal to the axis C of the support shaft 21. On the side of the first bearing 24 in the axial direction of the support shaft 21 between the arm 23 and the first protruding portion 33 of the lever main body 22, a boss portion 41 extending in the axial direction of the support shaft 21 and a boss portion 41 extending from the boss portion 41 A plurality of reinforcing ribs 42 protruding outward in the radial direction are connected to each other.
A columnar hook portion 43 is provided at an intermediate portion in the longitudinal direction of the arm 23. The hook portion 43 projects from the arm 23 toward the second bearing 25 in the axial direction of the support shaft 21. The formation position and the total length of the hook portion 43 are positions and lengths on which the base portion 31a of one leg portion 31 of the torsion coil spring 17 can be placed in a state where the pressing lever 15 is not attached to the flapper 5.

Therefore, in a state where the base portion 31a is placed on the hook portion 43, the hook portion 43 is opposite to the direction in which the spring force F (see FIG. 6) of the torsion coil spring 17 acts on the intermediate portion of one leg portion 31. Supports movable in the direction. In this embodiment, the hook portion 43 corresponds to the "temporary holding portion" in the present invention. Although not shown, a protrusion for preventing the base portion 31a from falling off can be provided at the tip of the hook portion 43.

The torsion coil spring 17 is previously assembled to the pressing lever 15 before the pressing lever 15 is attached to the flapper 5. In this assembly work, the other leg portion 36 is inserted into the slit 37 of the spring engaging portion 35 with the support shaft 21 passed through the coil portion 38, and the one leg portion 31 is hooked against the spring force F. It is performed by engaging with the portion 43. The spring force F of the torsion coil spring 17 acts so that one leg 31 pushes the hook portion 43 and the other leg 36 pushes the spring engaging portion 35, as shown by an arrow in FIG.

The columnar protrusion 32 of the flapper 5 described above is arranged at a position associated with the tip of the hook portion 43 of the pressing lever 15 at a position immediately before mounting. As shown by the alternate long and short dash line in FIG. 5, the position immediately before mounting is the position where the boss portion 41 is engaged when the support shaft 21 of the pressing lever 15 engages with the first and second bearings 24 and 25. It refers to a position close to the bearing piece 27 inside the first bearing 24. As shown by the alternate long and short dash line in FIG. 5, the columnar protrusion 32 is on the upstream side (left side in FIG. 5) in the transport direction described above from the hook portion 43, and the hook portion 43 is in the axial direction of the support shaft 21. It is arranged at the same position as the base portion 31a of one of the leg portions 31 mounted on the above.

The inclined surface 32a of the columnar protrusion 32 is a connecting portion between the base portion 31a and the tip portion 31b of one leg portion 31 in the process in which the support shaft 21 of the pressing lever 15 is attached to the first and second bearings 24 and 25. It is formed at a position where the corners thereof are in contact with each other. The inclined surface 32a is inclined from the protruding end side of the columnar projection 32 to the outer surface 5a side of the flapper 5 and extends to a position away from the hook portion 43 toward the second bearing 25 in the axial direction of the support shaft 21. There is. In this embodiment, the inclined surface 32a corresponds to the "pressure receiving portion" in the present invention.
The side surface 32b facing the pressing lever 15 in the columnar projection 32 according to this embodiment is also inclined. As shown in FIG. 6, the side surface 32b is inclined so as to be gradually located on the downstream side (left side in FIG. 6) in the transport direction toward the protruding end.

Next, a procedure for attaching the pressing lever 15 configured as described above to the flapper 5 will be described with reference to FIGS. 8 to 11. To attach the pressing lever 15 to the flapper 5, first, a torsion coil spring 17 is assembled to the pressing lever 15 to form a lever assembly 44 (see FIG. 8). Then, as shown in FIG. 8, the lever assembly 44 is superposed on the outer surface 5a of the flapper 5. At this time, the first and second protrusions 33 and 34 of the lever body 22 are inserted into the holes 16 of the flapper 5. Then, the lever assembly 44 is translated along the outer surface 5a of the flapper 5 toward the first and second bearings 24 and 25.

By translating the lever assembly 44 in this way, the support shaft 21 enters the openings of the first and second bearings 24 and 25, and as shown in FIGS. 9 to 11, the torsion coil spring The tip of one leg 31 of 17 abuts on the columnar protrusion 32. That is, the tip of one leg 31 comes into contact with the columnar protrusion 32 in the process of attaching the lever to the flapper 5. The tip referred to here is a tip located on the downstream side in the transport direction, and is a corner portion formed by a connecting portion between the base portion 31a and the tip portion 31b of one leg portion 31. This corner portion first hits the side surface 32b on the protruding end side of the columnar protrusion 32.

In this state, the lever assembly 44 moves further toward the upstream side in the transport direction, so that one leg portion 31 rides on the columnar protrusion 32, and the direction in which the spring force F of the torsion coil spring 17 acts. Displaces in the opposite direction. At this time, the base portion 31a is separated from the hook portion 43. The contact portion between the one leg portion 31 and the columnar protrusion 32 moves from the side surface 32b to the inclined surface 32a by moving to the upstream side in the transport direction while the one leg portion 31 is displaced in this way.
When the one leg portion 31 comes into contact with the inclined surface 32a, it is pushed by the spring force F and slides along the inclined surface 32a toward the outer surface 5a of the flapper 5 while contacting the inclined surface 32a. The inclined surface 32a extends to a position away from the hook portion 43 in the axial direction of the support shaft 21. Therefore, by moving the one leg 31 so as to slide down the inclined surface 32a, the tip end 31b of the one leg 31 moves toward the second bearing 25 in the axial direction of the support shaft 21, and the base portion. 31a passes beside the hook portion 43 so as to avoid the hook portion 43.

In a state where the support shaft 21 is engaged with the first and second bearings 24 and 25 and the pressing lever 15 is attached to the flapper 5, as shown in FIG. 12, the base portion 31a of one leg portion 31 is hooked. It comes off from the portion 43, and the tip portion 31b comes into contact with the outer surface 5a of the flapper 5 and pushes the outer surface 5a with the spring force F of the torsion coil spring 17.
As described above, in this embodiment, the lever assembly 44 can be attached to the flapper 5 in a state where the torsion coil spring 17 is held by the pressing lever 15 by its own spring force F. Therefore, when the lever assembly 44 is slid in parallel with the outer surface 5a of the flapper 5 which is the wall of the medium passage 3, one leg 31 of the torsion coil spring 17 does not come into contact with the outer surface 5a. It is not necessary to hold the torsion coil spring 17 with a finger in order to perform the above. That is, the outer surface 5a is not damaged, and there is no possibility that the operator pushes the fine torsion coil spring 17 with a finger to deform it.

Further, by attaching the pressing lever 15 to the flapper 5, one leg 31 of the torsion coil spring 17 comes off from the hook portion 43 and pushes the outer surface 5a of the flapper 5, so that the one leg portion 31 is exclusively hooked. There is no need to remove it from the unit 43.
Therefore, according to this embodiment, it is possible to simplify the mounting work of the lever assembly 44 having the torsion coil spring 17 while preventing the torsion coil spring 17 from being damaged and the mounting surface (outer surface 5a) from being damaged. It is possible to provide a mounting structure for a lever for a circular medium processing device, which allows the lever assembly 44 to be easily mounted on the flapper 5 which is the wall of the medium passage 3.

The flapper 5 according to this embodiment is attached by the outer surface 5a along the medium passage 3 and the first and second bearings 24 attached by translating the support shaft 21 along the outer surface 5a in a direction intersecting the axial direction. , 25 and.
Therefore, when the first and second bearings 24 and 25 that support the support shaft 21 are provided on the flapper 5, it is possible to prevent the structure of the mold for molding the flapper 5 from becoming complicated.

The inclined surface 32a of the columnar protrusion 32 according to this embodiment is inclined and extends from the protruding end side of the columnar protrusion 32 to a position on the outer surface 5a side and away from the hook portion 43 in the axial direction of the support shaft 21. One leg 31 of the torsion coil spring 17 moves in the axial direction of the support shaft 21 along the inclined surface 32a by coming into contact with the inclined surface 32a in the process of attaching the pressing lever 15 to the flapper 5.
Therefore, since the torsion coil spring 17 is automatically mounted in a fixed position simply by mounting the pressing lever 15 on the flapper 5, the complexity of the mounting work is eliminated and the pressing lever 15 can be easily mounted on the flapper 5. ..

(Second embodiment)
The mounting structure of the lever for the circular medium processing device of the present invention can be applied to the mounting structure of the lever shown in FIGS. 13 to 22. In these figures, the same or equivalent members as those described with reference to FIGS. 1 to 12 are designated by the same reference numerals, and detailed description thereof will be omitted as appropriate.
The circular medium processing device 51 shown in FIG. 13 is a device such as a coin sorting device or a medal sorting device, and has a medium passage 3 through which a circular medium 2 such as a coin or a medal passes. The medium passage 3 is formed by a groove 52 formed in the base member 4 and a flapper 5 (see FIG. 15) attached to the base member 4 so as to close the opening of the groove.

The base member 4 constitutes the "wall member" in the present invention. As shown in FIG. 13, at the upper end of the medium passage 3, that is, the upstream end of the circular medium 2 in the transport direction, the lever 53 according to the present invention has a lever mounting structure 54 according to this embodiment (see FIG. 14). Is attached by. Note that FIG. 13 depicts only the medium passage 3 formed in the base member 4 and the lever 53 according to the present invention, and does not show other mechanisms such as a sorting mechanism not related to the lever 53.

The lever 53 according to this embodiment has three functions. The first function is a function of contacting the circular medium 2 thrown into the medium passage 3 from the medium inlet 6 and imparting resistance to the circular medium 2 to reduce the falling speed. The second function is a function of preventing the circular medium 2 that has moved downstream from the lever 53 in the transport direction from returning to the medium inlet 6 side. The third function is a function of being pushed by the circular medium 2 and swinging to block the optical path of the circular medium detection sensor (not shown).

As shown in FIGS. 14 and 15, the lever 53 according to this embodiment is swingably attached to the outer surface 4a of the base member 4 opposite to the medium passage 3 via the metal support shaft 55. There is. The lever 53 is urged by a torsion coil spring 57, which will be described later, in a direction in which the swing end portion is inserted into the hole 56 of the base member 4.
The support shaft 55 extends in a direction along the outer surface 4a and orthogonal to the transport direction (downward in FIG. 14) to which the circular medium 2 is sent in the medium passage 3, and at both ends. It is detachably supported by the first bearing 61 and the second bearing 62.

As shown in FIG. 16, the structures of the first and second bearings 61 and 62 are the same as those in the first embodiment. The first bearing 61 is composed of an outer bearing piece 63 and an inner bearing piece 64. The second bearing 62 is composed of an outer bearing piece 65 and an inner bearing piece 66. The outer bearing pieces 63, 65 are engaged with a half portion of the support shaft 55 in the direction away from the outer surface 4a of the base member 4. The inner bearing pieces 64 and 66 are engaged with a half portion of the support shaft 55 close to the outer surface 4a of the base member 4. The first and second bearings 61 and 62 are formed so as to open toward the downstream side in the transport direction of the circular medium 2, and the support shaft 55 is engaged by sliding toward the upstream side in the transport direction. A matching configuration is adopted.

In the vicinity of the second bearing 62 according to this embodiment, a plate-shaped protrusion 72 pushed by one leg 71 of the torsion coil spring 57, which will be described later, is projected. The plate-shaped protrusion 72 is provided on the upstream side in the transport direction from the bearing piece 66 inside the second bearing 62, and is provided on the first bearing 61 side in the axial direction of the support shaft 55. At the protruding end of the plate-shaped protrusion 72, a recess 73 with which one leg 71 of the torsion coil spring 57 is engaged is formed. In this embodiment, the plate-shaped protrusion 72 corresponds to the "pressure receiving portion" in the present invention.

As shown in FIGS. 17 to 20, the lever 53 has a mounting piece 74 that the support shaft 55 crosses, and a lever body 75 that protrudes from the mounting piece 74. The mounting piece 74 has first to third mounting portions 76 to 78 that are aligned in the axial direction of the support shaft 55. Of these first to third mounting portions 76 to 78, the first and third mounting portions 76 and 78 located on both sides are half portions on one side (medium passage 3 side) in the radial direction of the support shaft 55. It is rotatably fitted with. The second mounting portion 77 located at the center is rotatably fitted to the half portion of the support shaft 55 on the other side in the radial direction (the side opposite to the medium passage 3).

The third mounting portion 78 is provided with a projecting piece 81 having an arcuate cross section that protrudes in the direction opposite to that of the second mounting portion 77. As shown in FIG. 17, the projecting piece 81 is provided at a position aligned with the support shaft 55 of the lever 53, and projects laterally from the lever main body 75, which will be described later.
As shown in FIG. 19, the projecting piece 81 has a spring force of the torsion coil spring 57 at an intermediate portion of one leg 71 of the torsion coil spring 57, which will be described later, in a state where the lever 53 is not attached to the base member 4. It is movably supported in the direction opposite to the direction in which F acts. In this embodiment, the projecting piece 81 corresponds to the "temporary holding portion" in the present invention.

The lever body 75 of the lever 53 is formed in a plate shape, and as shown in FIG. 17, has a pair of pressing portions 75a and 75b at the swinging end portion (lower end portion in FIG. 17). These pressing portions 75a and 75b come into contact with the circular medium 2 in the medium passage 3. A light-shielding plate 82 is erected in the middle of the lever body 75 in the axial direction of the support shaft 55. The light-shielding plate 82 selectively crosses the optical path of a circular medium detection sensor (not shown), and projects from the lever body 75 in the direction opposite to the medium passage 3.
A pressure receiving plate 83 is erected at a position of the lever body 75 facing the above-mentioned protrusion 81 with the support shaft 55 interposed therebetween. The pressure receiving plate 83 engages with the other leg portion 84 of the torsion coil spring 57 described later, and protrudes from the lever body 75 in the direction opposite to the medium passage 3.

As shown in FIGS. 19 and 20, the torsion coil spring 57 is previously assembled to the lever 53 before the lever 53 is attached to the base member 4. In this assembly work, the other leg portion 84 is engaged with the pressure receiving plate 83 while the support shaft 55 is passed through the coil portion 85, and the one leg portion 71 is engaged with the protrusion 81 against the spring force F. It is done together. The spring force F of the torsion coil spring 57 acts so that one leg 71 pushes the protrusion 81 and the other leg 84 pushes the pressure receiving plate 83, as shown by an arrow in FIG. In this state, the torsion coil spring 57 is held by the lever 53 by its own spring force F.

Next, the procedure for attaching the lever 53 according to this embodiment to the base member 4 will be described with reference to FIGS. 21 and 22 (A) and 22 (B). The breaking position in FIG. 21 is the position shown by the XV-XV line in FIG. The breaking position in FIG. 22 (A) is the position shown by the line AA in FIG. The breaking position in FIG. 22B is the position shown by the line BB in FIG.
When attaching the lever 53 to the base member 4, first, the torsion coil spring 57 is assembled to the lever 53 to form the lever assembly 91 (see FIG. 20). Then, the lever assembly 91 is superposed on the outer surface 4a of the base member 4. At this time, the pressing portions 75a and 75b of the lever body 75 are inserted into the holes 56 of the base member 4. Then, as shown in FIG. 21, the lever assembly 91 is translated along the outer surface 4a of the base member 4 toward the first and second bearings 61 and 62.

By translating the lever assembly 91 in this way, the support shaft 55 enters the openings of the first and second bearings 61 and 62. Immediately before the support shaft 55 engages with the first and second bearings 61 and 62, one leg 71 of the torsion coil spring 57 enters the recess 73 of the plate-shaped protrusion 72 and comes into contact with the plate-shaped protrusion 72. It will be like. That is, the tip of one leg 71 comes into contact with the plate-shaped protrusion 72 in the process of attaching the lever 53 to the base member 4. Then, as the lever assembly 91 further moves, the support shaft 55 engages with the first and second bearings 61 and 62 as shown in FIGS. 22A and 22B.

In FIG. 22A, a part of the outer bearing piece 65 and the inner bearing piece 66 of the second bearing 62 is shown, and in FIG. 22B, the inner bearing piece 66 of the second bearing 62 is shown. Although only shown, at this time, the support shaft 55 is similarly engaged in the outer bearing piece 63 and the inner bearing piece 64 of the first bearing 61. In the mounted state in which the support shaft 55 is engaged with the first and second bearings 61 and 62 in this way, as shown in FIG. 15, one leg 71 of the torsion coil spring 57 separates from the protrusion 81. It comes into contact with only the plate-shaped protrusion 72 and pushes the plate-shaped protrusion 72 with the spring force F. That is, when the one leg portion 71 is pressed against the plate-shaped protrusion 72, the one leg portion 71 moves in the direction opposite to the direction in which the spring force F of the torsion coil spring 57 acts and separates from the protrusion 81.

As described above, also in this embodiment, since the lever assembly 91 can be attached to the base member 4 in a state where the torsion coil spring 57 is held by the lever 53 by its own spring force F, the first embodiment is performed. As in the case of taking the form, the outer surface 4a of the base member 4 is not damaged, and there is no possibility that the operator pushes the fine torsion coil spring 57 with a finger to deform it.
Further, by attaching this lever 53 to the base member 4, one leg 71 of the torsion coil spring 57 comes off from the protrusion 81 and pushes the plate-shaped protrusion 72 of the base member 4, so that only one leg is used. The work of removing the portion 71 from the projecting piece 81 is unnecessary.
Therefore, also in this embodiment, the mounting work of the lever assembly 91 having the torsion coil spring 57 can be simplified while preventing the torsion coil spring 57 from being damaged and the mounting surface from being scratched, and the lever assembly 91 can be simplified. Can be provided with a mounting structure for a lever for a circular medium processing device, which can be easily mounted on a base member 4 which is a wall of a medium passage 3.

The projecting piece 81 according to this embodiment is provided at a position aligned with the support shaft 55 in the lever 53. When one leg 71 of the torsion coil spring 57 is pressed against the plate-shaped protrusion 72, the torsion coil spring 57 moves in the direction opposite to the direction in which the spring force F of the torsion coil spring 57 acts and separates from the protrusion 81.
Therefore, since the torsion coil spring 57 is automatically mounted at a fixed position simply by mounting the lever 53 on the base member 4, the complexity of the mounting work is eliminated and the lever 53 can be easily mounted on the base member 4. ..

1,51 ... Circular medium processing device, 2 ... Circular medium, 3 ... Medium passage, 4 ... Base member (wall member), 4a, 5a ... Outer surface, 5 ... Flapper (wall member), 11,54 ... Lever mounting structure , 15 ... Pressing lever (lever), 17, 57 ... Torsion coil spring, 24, 61 ... First bearing (bearing portion), 25, 62 ... Second bearing (bearing portion), 31, 71 ... One leg Part, 32 ... Columnar protrusion, 32a ... Inclined surface (pressure receiving part), 36,84 ... Other leg part, 38,85 ... Coil part, 43 ... Hook part (temporary holding part), 53 ... Lever, 55 ... Support shaft (Shaft), 72 ... Plate-shaped protrusion (pressure receiving part), 81 ... Projection piece (temporary holding part).

Claims (4)

A wall member that becomes part of the wall of the medium passage through which the circular medium passes,
A lever that has a shaft that is detachably supported by the wall member and swings around the shaft so as to move in and out of the medium passage.
A torsion coil having a coil portion through which the shaft penetrates, in which one leg pushes the wall member and the other leg pushes the lever to urge the lever into the medium passage. Equipped with a spring,
The lever has a temporary holding portion that movably supports an intermediate portion of the one leg portion in a direction opposite to the direction in which the spring force of the torsion coil spring acts.
The wall member has a pressure receiving portion in which the tip of one of the legs comes into contact with the lever in the process of being attached to the wall member and receives the spring force of the torsion coil spring from the tip.
The lever for a circular medium processing apparatus, wherein the one leg portion of the torsion coil spring is detached from the temporary holding portion and pushes the wall member when the lever is attached to the wall member. Mounting structure. In the mounting structure of the lever for the circular medium processing device according to claim 1,
The wall member is characterized by having a wall surface along the medium passage and a bearing portion attached by translating the axis along the wall surface in a direction intersecting the axial direction. Mounting structure of lever for media processing equipment. In the mounting structure of the lever for the circular medium processing device according to claim 2.
The pressure receiving portion is provided on a protrusion projecting from the wall surface, and is inclined from the protruding end side of the protrusion to a position on the wall surface side and away from the temporary holding portion in the axial direction of the shaft. Extend,
The one leg portion is a lever for a circular medium processing apparatus, characterized in that the lever moves in the axial direction along the pressure receiving portion by coming into contact with the pressure receiving portion in the process of being attached to the wall member. Mounting structure. In the mounting structure of the lever for the circular medium processing device according to claim 2.
The temporary holding portion is provided at a position aligned with the shaft of the lever.
The circular medium processing apparatus, characterized in that, when the one leg portion is pressed against the pressure receiving portion, the one leg portion moves in a direction opposite to the direction in which the spring force of the torsion coil spring acts and is separated from the temporary holding portion. Mounting structure of the lever.

Images