JP2005015210A - Impeller mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To require no space for sliding a member and eliminate the need of screwing in replacing an impeller. <P>SOLUTION: This impeller mechanism fixed to a rotating shaft to transfer a paper sheet is composed of a flexible tongue piece 10 and a tongue piece cap 20 having rigidity, to which the tongue piece 10 is fixed. The tongue piece cap 20 is provided with a shaft insert hole 21 fitted to the shaft, an opening part 22 in which the opening distance of a part connected to the shaft insert hole 21 is smaller than the shaft diameter of 8 mm, and a knob part 23 provided on the opposite position to the opening part 22. With the knob part 23 held, the tongue piece cap 20 is fitted to the shaft through the opening part 22 and fixed thereto. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an impeller mechanism that is used in a paper sheet medium processing apparatus and the like and is fixed to a rotating shaft and transports paper sheets.
[0002]
[Prior art]
This type of impeller mechanism is often mounted on a paper sheet stacking mechanism portion in a medium processing apparatus or the like, and replacement due to damage or the like is obstructed by a guide member or a roller mounted around the impeller mechanism. It was not easy.
Therefore, there is a type in which the impeller is provided with a slit, and the slit is widened to be fitted to the rotary shaft and removed so that both sides of the impeller are fixed with a fixing ring and a presser ring (for example, Patent Document 1).
In addition, it is related with the clearer utilized for the draft part of a spinning machine, and there is also what has shown the method of attaching a blade | wing member to a clearer support body (for example, refer patent document 2).
[0003]
[Patent Document 1]
Japanese Patent Publication No. 7-98605 [Patent Document 2]
Japanese Utility Model Publication No. 63-8770 [0004]
[Problems to be solved by the invention]
However, when replacing the conventional impeller, a space for sliding a member such as a fixing ring in the axial direction is necessary, and the fixing ring and the presser ring are screwed to the rotating shaft, so when removing the screw, There was also a risk of dropping the screw into the device.
An object of the present invention is to provide an impeller mechanism that does not require a space for sliding a member and that is not screwed.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a flexible tongue piece and a rigid tongue piece cap for fixing a tongue piece in an impeller mechanism that is fixed to a rotating shaft and transports paper sheets. The tongue cap includes a shaft insertion hole that fits into the shaft, an opening portion where the opening distance of the portion connected to the shaft insertion hole is smaller than the diameter of the shaft, and a knob portion provided at a position opposite to the opening portion. The tongue piece cap is fitted into the shaft and fixed from the opening by grasping the knob portion.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view showing a first embodiment of the present invention, and FIG. 2 is a perspective view showing a tongue piece constituting the first embodiment.
The first embodiment includes a plurality of tongue pieces 10 and a tongue piece cap 20 that fixes the tongue pieces 10.
The tongue piece 10 is made of a flexible synthetic resin such as urethane synthetic rubber and comprises a central portion 11 of a portion to be attached to the tongue piece cap 20 and blade portions formed on both sides thereof as shown in FIG. The central portion 11 is formed with a positioning projection 13 at the center in the longitudinal direction of the tongue piece 10.
FIG. 2 (a) shows a tongue piece molded from a synthetic resin, and FIG. 2 (b) shows a tongue piece formed by heating a film.
[0007]
The tongue piece cap 20 is made of a rigid synthetic resin such as an epoxy resin. A shaft insertion hole 21 that fits into the shaft is provided at the center of the tongue piece cap 20, and an opening 22 is opened below the shaft insertion hole 21.
The narrowest opening distance W at the portion where the shaft insertion hole 21 and the opening 22 are connected is configured to be smaller than the diameter of the shaft.
Further, a knob portion 23 is provided at a position opposite to the opening portion 22, that is, outside the tongue piece cap 20. The knob portion 23 is formed in a shape that can be easily pinched with a tool by forming recesses 24 on both sides.
[0008]
The tongue piece cap 20 has a width wider than the width of the tongue piece 10 and is adjacent to a plurality of radial slits 25 having a depth equivalent to the width of the tongue piece 10 in the width direction in order to insert the tongue piece 10. And a plurality of arc-shaped slits 26 for connecting the slits 25 to be operated.
A positioning groove 27 is formed in the center of the arc-shaped slit 26 in the depth direction.
A protrusion 28 for preventing movement is provided below the knob portion 23 in the shaft insertion hole 21.
[0009]
To assemble the impeller, the tongue piece 10 shown in FIG. 2 is bent as shown in FIG. 1 so that the central portion 11 corresponds to the arc-shaped slit 26 and the protrusion 13 of the tongue piece 10 corresponds to the groove 27. The base of the blade portion 12 of the tongue piece 10 is made to correspond to the radial slit 25, and the whole tongue piece 10 is inserted and fixed to the depth of the slits 25 and 26 of the tongue piece cap 20.
Since the projection 13 of the tongue piece 10 is set at the center in the longitudinal direction of the tongue piece 10, the tongue piece 10 is automatically and accurately positioned by fitting with the groove 27.
[0010]
FIG. 3 is a perspective view showing a state in which the first embodiment of the present invention is mounted on a shaft.
In the first embodiment, since the knob portion 23 is formed on the reflection side of the opening portion 22, the knob portion 23 is grasped with a tool, and the opening portion 22 is made to correspond to the shaft 30 and pushed in a direction perpendicular to the shaft 30. In this case, even if the tongue piece cap 20 has rigidity, the opening portion 22 of the tongue piece cap 20 having the slits 25 and 26 and the concave portion 24 moves slightly, so that the tongue piece cap 20 can be easily fitted into the shaft 30 and fixed.
On the contrary, the tongue piece cap 20 can be easily detached from the shaft 30 by grasping the knob portion 23 with a tool and pulling it out in a direction perpendicular to the shaft 30.
[0011]
Since the opening distance of the connecting portion between the opening 22 and the shaft insertion hole 21 is configured to be smaller than the diameter of the shaft 30, when the tongue cap 20 is fitted into the shaft 30, that portion slightly extends outward, and the shaft 30 is When it fits in the insertion hole 21, a force acts inward due to the reaction, so that the shaft 30 cannot be easily removed from the shaft insertion hole 21.
If the diameter of the shaft insertion hole 21 is made slightly smaller than the diameter of the shaft 30, the effect is further increased. For example, when the diameter of the shaft 30 is 8 mm, the diameter of the shaft insertion hole 21 is 7.95 mm, and the opening distance of the connecting portion with the opening 22 is about 7 mm.
[0012]
In order to prevent the tongue cap 20 from moving relative to the shaft 30, when the tongue cap 20 is fitted into the shaft 30, the tongue cap 20 shown in FIG. Since the projection 28 provided in the shaft insertion hole 21 is inserted, the position of the tongue piece cap 20 is held by this, and the shaft 30 is prevented from moving in the rotational direction and the axial direction.
In addition, convex portions are formed on both innermost sides of the shaft insertion hole 21, grooves are formed on both sides of the outer periphery of the shaft 30, and the convex portions and the grooves are fitted to prevent movement in the axial direction. Anyway.
[0013]
As described above, according to the first embodiment, the tongue piece cap is provided with the knob portion, and the knob portion is grasped with a tool and the tongue piece cap is fitted and fixed to the shaft from the opening portion. Since the cap can be removed by pulling it out and pushed in at a right angle, it is not necessary to slide the member in the axial direction during replacement, and there is no need for a screw to fix the tongue cap to the shaft. Sometimes there is no risk of dropping screws into the device.
Further, since the positioning means is provided in the central portion of the tongue piece and in the arc-shaped slit of the tongue piece cap, the positioning means are fitted to each other by inserting the tongue piece into the slit of the tongue piece cap. Can be automatically positioned.
[0014]
FIG. 4 is a perspective view showing a second embodiment of the present invention.
The second embodiment is exactly the same as the first embodiment except that a slit is provided in the substantially central portion of the knob portion of the first embodiment.
Therefore, the tongue piece cap 40 has a knob portion 43, and a slit 49 is formed in the center of the knob portion 43 in the width direction.
Since the slit 49 is formed, the tongue cap 40 is crushed when the grip portion 43 is grasped with a tool, and the opening is expanded in the direction of the arrow A with the portion F as a fulcrum. When the part 43 is released, the opening 22 has flexibility to move so as to narrow in the direction of arrow B.
[0015]
FIG. 5 is a perspective view showing a state in which the second embodiment of the present invention is mounted on a shaft.
When the impeller is replaced, when the grip portion 43 of the tongue piece cap 40 is grasped with a tool, the opening portion 22 expands as described above, and the tongue piece cap 40 releases the shaft 30 from the state in which the shaft 40 is gripped. To change.
The tongue piece cap 40 can be easily removed with a little force by pulling the tongue piece cap 40 in a direction perpendicular to the shaft 30 in this state.
Further, when the tongue cap 40 is attached to the shaft 30, the operation is the reverse of the removal, and when the knob portion 43 is grasped with a tool, the opening portion 22 is widened. When the knob part 43 is released when the knob part 43 is accommodated in the tape 21, the tongue piece cap 40 is attached while gripping the shaft 30.
[0016]
As described above, according to the second embodiment, in addition to the effects of the first embodiment, since the slit is provided in the substantially central portion of the knob portion, it is possible to obtain a little force by grasping the knob portion with a tool. There is an advantage that the tongue cap can be removed and attached, and the replacement work is easy.
[0017]
FIG. 6 is a cross-sectional view showing a third embodiment of the present invention, and FIG. 7 is a perspective view showing a tongue piece constituting the third embodiment.
The difference from the first embodiment is that a concave portion opened in the shaft insertion hole is formed without providing an arc-shaped slit.
The third embodiment also includes a plurality of flexible tongue pieces 50 and a rigid tongue piece cap 60 for fixing the tongue pieces 50.
As in the first embodiment, the tongue piece 50 is composed of a central portion 51 of a portion attached to the tongue piece cap 60 and blade portions 52 formed on both sides thereof, as shown in FIG. A groove 53 is provided at one end of the center in the longitudinal direction, and a hole 54 is provided at the center in the longitudinal direction and the width direction of the tongue piece 50 as shown in FIG.
[0018]
As in the first embodiment, the tongue piece cap 60 is provided with a shaft insertion hole 61 that fits into the shaft 70 at the center, and an opening 62 is opened below the shaft insertion hole 61.
The narrowest opening distance W at the portion where the shaft insertion hole 61 and the opening 62 are connected is smaller than the diameter of the shaft 70.
Further, a knob 63 is provided at a position opposite to the opening 62, that is, outside the tongue piece cap 60. The knob portion 63 is formed in a shape that can be easily picked up by a tool by forming concave portions 64 on both sides.
[0019]
The tongue piece cap 60 has a width wider than the width of the tongue piece 50, and a plurality of penetrating through the shaft insertion holes 61 having a depth equivalent to the width of the tongue piece 50 in the width direction in order to insert the tongue piece cap 50. A radial slit 65 and a recess 66 including an end of the slit 65 are provided.
The recess 66 is open to the shaft insertion hole 61 side, and the bottom is formed in an arc shape in cross section, and a positioning projection 67 is formed at the innermost part of the arcuate shape in the width direction of the tongue piece cap 60. ing.
A protrusion 68 for preventing movement is provided below the knob portion 63 in the shaft insertion hole 61.
[0020]
To attach the tongue piece 50 to the tongue piece cap 60, the tongue piece 50 is bent as shown in FIG. 6 so that the central portion 51 corresponds to the concave portion 66 and the blade portion 52 corresponds to the slit 65 and is inserted as shown in FIG. The tongue 53 is positioned by fitting the groove 53 of the tongue 50 shown in a) to the protrusion 67 in the recess 66.
In order to attach the tongue piece cap 60 to the shaft 70, the knob portion 63 is grasped with a tool, and the tongue piece cap 60 is moved in the direction of arrow C, that is, in a direction perpendicular to the shaft 70, and fitted into the shaft 70.
At this time, since the opening distance W of the connecting portion between the opening 62 and the shaft insertion hole 61 is smaller than the diameter of the shaft 70, the snapping action works, and the shaft 70 is gripped by the tongue piece cap 60. The tongue piece 50 is fixed to the tongue piece cap 60 in contact with the inner surface of the central portion 51.
[0021]
The protrusion 68 in the shaft insertion hole 61 is inserted into a hole 71 provided in the shaft 70 when the tongue cap 60 is fitted into the shaft 70, whereby the position of the tongue cap 60 is maintained, and the rotation direction of the shaft 70 and Axial movement is prevented.
When the tongue piece 50 shown in FIG. 7B is used, the protrusion 67 in the tongue piece cap 66 needs to be formed at the center position of the central portion of the recess 66.
[0022]
As described above, according to the third embodiment, the same effects as those of the first embodiment can be obtained.
[0023]
FIG. 8 is a cross-sectional view of a tongue cap mounted state showing a fourth embodiment of the present invention, in which the tongue is omitted, and FIG. 9 shows a shaft to which the fourth embodiment is applied. It is the perspective view which a part omitted.
In the fourth embodiment, the inner surface of the shaft insertion hole on the lower side of the knob portion in the third embodiment is formed in a flat portion, and the flat portion is fitted with an outer diameter groove provided in the shaft. Is.
[0024]
FIG. 8A shows the tongue piece cap 80 provided with positioning projections 87 as in the third embodiment, and FIG. 8B shows the tongue piece cap 90 provided with positioning protrusions as in the first embodiment. The groove 97 is provided.
In both (a) and (b), the inner surfaces of the shaft insertion holes 81 and 91 on the knob portions 83 and 93 side are configured to be flat.
[0025]
On the other hand, the shaft 100 has a groove 101 formed in the outer diameter direction as shown in FIGS. The groove 101 has a width equivalent to the width of the tongue piece caps 80 and 90, and when the tongue piece caps 80 and 90 are fitted into the shaft 100, the shaft insertion holes 81 and 91 of the tongue piece caps 80 and 90 are inserted. The flat portion is fitted, and the flat portion is in close contact with the bottom surface 102 of the groove 101.
By comprising in this way, the position with respect to the shaft 100 of the tongue piece caps 80 and 90 can be hold | maintained, and the movement to the rotation direction and the axial direction of the shaft 100 can be prevented.
[0026]
Other components such as the radial slits 85 and 95 of the tongue piece caps 80 and 90 are the same as those in the third embodiment.
As for the tongue piece, the one shown in FIG. 7 for FIG. 8A and the one shown in FIG. 2 for FIG. 8B are applied.
[0027]
As described above, according to the fourth embodiment, the same effects as in the third embodiment can be obtained.
In the fourth embodiment, the inner surface of the shaft insertion hole on the knob portion side of the tongue piece cap in the fourth embodiment is configured as a flat portion, and is fitted into a groove provided in the shaft to hold the position of the tongue piece cap with respect to the shaft. The first and second embodiments can also be used.
[0028]
【The invention's effect】
As described above, according to the present invention, since the tongue piece cap is provided with the knob portion and the tongue piece cap is fitted and fixed to the shaft, the space for sliding the member in the axial direction is not necessary at the time of replacement. By eliminating it, it is possible to completely prevent the screw from being dropped into the apparatus during replacement.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a first embodiment of the present invention.
FIG. 2 is a perspective view showing a tongue piece.
FIG. 3 is a perspective view showing a state in which the first embodiment is mounted on a shaft.
FIG. 4 is a perspective view showing a second embodiment of the present invention.
FIG. 5 is a perspective view showing a state in which the second embodiment is mounted on a shaft.
FIG. 6 is a cross-sectional view showing a third embodiment of the present invention.
FIG. 7 is a perspective view showing a tongue piece.
FIG. 8 is a cross-sectional view of a mounted state showing a fourth embodiment of the present invention.
FIG. 9 is a partially omitted perspective view showing a shaft.
[Explanation of symbols]
10, 50 tongue piece 11 central portion 12 blade portion 13 protrusion 20, 40, 60, 80, 90 tongue piece cap 21, 61, 81, 91 shaft insertion hole 22, 62 opening 23, 43, 63, 83, 93 knob Portions 25, 65, 85, 95 Radial slit 26 Arc-shaped slit 27, 97 Groove 49 Slot 66 Recess 67, 87 Protrusion 30, 70, 100 Shaft 71 Hole 101 Groove 102 Bottom

Claims (9)

In an impeller mechanism that is fixed to a rotating shaft and transports paper sheets,
A flexible tongue piece and a rigid tongue cap for fixing the tongue piece;
The tongue piece cap includes a shaft insertion hole that fits into a shaft, an opening having an opening distance of a portion connected to the shaft insertion hole smaller than the diameter of the shaft, and a knob portion provided at a position opposite to the opening. Have
An impeller mechanism characterized in that the tongue piece cap is fitted and fixed to the shaft from the opening by grasping the knob portion. 2. A slit is provided in a substantially central part of the knob part, and the opening part is widened by grasping the knob part, and the opening part is narrowed by releasing the knob part. The impeller mechanism described. The impeller mechanism according to claim 1 or 2, wherein the tongue piece includes a central portion and blade portions formed on both sides of the central portion. The tongue piece cap has a width wider than the width of the tongue piece, and connects a plurality of radial slits having a depth equivalent to the width of the tongue piece in the width direction and the adjacent radial slits. A plurality of arc-shaped slits,
The center part of the said tongue piece is inserted in the said arc-shaped slit, The base of the blade | wing part of the said tongue piece is inserted in the said radial slit, and a plurality of tongue pieces are fixed. Impeller mechanism. A positioning means is provided at a central portion of the tongue piece, a positioning means is provided in an arc-shaped slit of the tongue piece cap, and the positioning means is fitted to each other to position the tongue piece. Item 5. The impeller mechanism according to Item 4. The tongue piece cap has a width wider than the width of the tongue piece, and a plurality of radial slits penetrating the shaft insertion hole having a depth equal to the width of the tongue piece in the width direction, and the slit A recess including the end of the
When the center of the tongue piece is accommodated in the recess, the base of the blade portion of the tongue piece is inserted into the slit, and the tongue piece cap is fitted onto the shaft from the opening by grasping the knob portion. The impeller mechanism according to claim 1, wherein the shaft is fixed in contact with a central portion of the tongue piece. The impeller mechanism according to claim 6, wherein positioning means is provided at a central portion of the tongue piece, positioning means is provided at the concave portion, and the positioning means is fitted to each other to position the tongue piece. A protrusion is provided in a shaft insertion hole on the knob portion side of the tongue piece cap, and the protrusion is fitted into a hole provided in the shaft to hold the position of the tongue piece cap. The impeller mechanism according to any one of the above. An inner surface of the shaft insertion hole on the knob portion side of the tongue piece cap is formed as a flat portion, and the flat portion is fitted into an outer diameter groove provided in the shaft and is in close contact with the bottom surface of the groove. The impeller mechanism according to any one of claims 1 to 7, wherein the position of the cap is held.

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