JP2002191993A - Apparatus for adjusting rice milling degree of rice milling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably adjust a rice milling degree by arranging the dial, adjusting shaft, pressure control spring and resistance plate of a rice milling degree adjusting apparatus on the same axial line. SOLUTION: In the rice milling degree adjusting apparatus constituted so as to apply pressing force to the resistance plate 32, which closes the discharge port of a rice milling screen 28 so as to freely come into contact with and separating from the discharge port, by the pressure control spring 49 to adjust the same by the revolving operation of the dial 38, the adjusting shaft 43, which is integrally rotatable along with the dial 38 and advances and retreats in its axial direction with a constant adjusting stroke, is connected to the dial 38 and a part of a shaft support member 41 is locked with the screw groove 44 provided to the adjusting shaft 43 and a guide piece 46 is integrally energized along with the resistance plate 32 by the pressure adjusting spring 49 fitted to the adjusting shaft 43.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple rice milling machine used in ordinary households and the like, and to a rice milling degree adjusting device.

[0002]

2. Description of the Related Art In a simple household rice mill,
A milling degree adjusting device is provided which applies a pressing force by an elastic body to a resistance plate which closes an outlet of a rice polishing screen so as to be able to freely contact and separate from the outside and adjusts the pressing force by a dial operation from outside.

FIG. 10 shows an example of this. A guide shaft 3 is horizontally mounted in a front-rear direction on a fixed frame 2 fixed to a rice polishing machine main body 1, and a guide piece 4 and a slider 5 are slidable on the guide shaft 3. Attached to The front end of the guide piece 4 is bent downward, and a resistance plate 7 is attached via a resistance arm member 6. A resistance arm set 16 is configured by the guide piece 4, the resistance arm member 6, and the resistance plate 7.

The pressure adjusting spring 8 fitted on the guide shaft 3 described above.
Is interposed between the guide piece 4 and the slider 5 to urge the entire resistance arm set 16 in the retreating direction. The resisting plate 7 is pressed against the discharge port 10 of the screen 9 by this urging force.

A rotary cam 11 is mounted on the front end inclined portion of the fixed frame 2, and a pressing spring 12 is interposed on the guide shaft 3 between the slider 5 and the front end of the fixed frame 2. The biasing force of the pressing spring 12 presses the engaging piece 13 provided on the slider 5 against the rotating cam 11.

When a dial 15 is attached to the rotary shaft 14 of the rotary cam 11 and the user rotates the dial 15 in the direction of increasing or decreasing the degree of rice polishing, the slider 5 moves forward and backward, The spring force of the pressure adjusting spring 8 changes. As a result, the pressing force of the resistance plate 7 against the outlet 10 changes, and the degree of milling is adjusted.

[0007]

In the above-mentioned rice polishing apparatus, the rotary shaft 14 of the rotary cam 11 and the guide shaft 3 of the slider 5 are not coaxial and have a certain angle. For this reason, the surface on which the slider 5 presses the pressure adjusting spring 8 and the rotating cam 1
Since there is a vertical distance between the slider 5 and the engagement piece 13 that engages with the slider 1, a uniform force cannot be applied to the slider 5. As a result, the slider 5 may not slide smoothly on the guide shaft 3, which may cause unstable adjustment of the milling degree.

Therefore, the present invention provides a rotary shaft of a dial and a pressure adjusting spring arranged on the same line as a resistance plate.
An object of the present invention is to provide a rice milling degree adjusting device capable of smoothly adjusting rice milling degree.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a resistance plate for closing a discharge port of a rice milling screen so as to be able to come and go from the outside thereof by a pressure adjusting spring, In a rice milling degree adjusting device for a rice milling machine in which the pressing force is changed by rotating the dial to adjust the rice milling degree, the adjustment is such that the dial can be integrally rotated with the dial and moves forward and backward with a constant adjusting stroke. The shaft is coupled, the adjustment shaft is supported by a shaft support member provided on the apparatus main body, a part of the shaft support member is engaged with a screw groove provided on the adjustment shaft, and the adjustment plate has the resistance plate and the resistance plate. An integrated guide piece is slidably fitted, one end of the pressure adjusting spring is engaged with the adjusting shaft, and the other end of the pressure adjusting spring is engaged with the guide piece. .

[0010] According to the above structure, the turning operation of the dial causes the adjustment shaft to rotate and simultaneously move in the front-rear direction,
The spring force of the pressure adjusting spring applied to the guide piece is changed, thereby adjusting the pressing force on the outlet of the resistance plate. The dial, the adjusting shaft, the pressure adjusting spring, the guide piece and the resistance plate are arranged on the same axis.

Further, the pressure adjusting spring is formed by a coil spring, the pressure adjusting spring is fitted around the adjustment shaft, and one end of the pressure adjustment spring is connected to a spring engaging portion of the adjustment shaft. And the guide piece is fitted to a position closer to the resistance plate than the spring engagement portion, the other end of the pressure regulating spring is engaged with the guide piece, and the adjustment shaft is connected to the resistance plate. The pressure adjusting spring can be compressed by moving the pressure adjusting spring forward.

Further, a cam substrate extending axially around the adjusting shaft is provided on the dial, and a cam portion inclined in the spiral direction of the screw groove is formed on the cam substrate. An engaging claw that engages the portion is provided on the guide piece,
At the rear end of the adjusting stroke in which the adjusting shaft is retracted by the turning operation of the dial in the direction of decreasing rice polishing, the engaging claw engages with the front end of the cam portion closest to the screw groove. The pawl and the cam portion are positioned, and the dial is further rotated from the engagement start end of the cam portion and the engaging claw in the direction of decreasing the milling degree, so that the guide piece and the resistance plate are used for the milling screen. It is also possible to adopt a configuration for forcibly moving in a direction away from the discharge port.

According to this configuration, when it is necessary to clean the inside of the screen, the dial is rotated in a direction in which the degree of milling is minimized, and when the dial is further rotated beyond the rotating end, the guide is rotated. One of the engagement claws engages the cam part,
As a result of the guide piece being forcibly moved in accordance with the inclination of the cam portion, the resistance plate integrated with the guide piece is separated from the discharge port and opened. This makes it possible to eliminate the remaining rice inside the screen.

A position where the resistance plate is forcibly moved by the turning operation of the dial is defined as a care position, and at the care position, a protrusion provided on the dial and an inspection for covering the front surface of the rice milling machine body. It is possible to adopt a configuration in which the inspection panel can be removed only when the recess matches the panel. According to this configuration, the convex portion of the dial and the concave portion of the inspection panel are engaged at positions other than the care position, so that the inspection panel cannot be removed.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, this rice milling machine is a rice milling machine with a metering rice bin comprising a rice milling machine main body 21 and a metering rice bin 22 detachably mounted thereon.

A measuring and discharging device 23 for the measuring rice bin 22 is provided, and an upper portion of a hopper 24 faces a lower portion of the measuring and discharging device 23. A rice polishing mechanism 25 is provided below the hopper 24.

The milling mechanism 25 is obtained by covering a milling roll 27 connected to a drive shaft 26 with a milling screen 28. At the rear end of the rice polishing screen 28, the hopper 2
4 outlets are connected. The front end of the rice polishing screen 28 is pressed by a screen pressing plate 29 (FIG. 2).
), The outlet 31 of the polished rice is the screen holding plate 29
Open to the front of the The discharge port 31 is closed by a resistance plate 32 so as to be able to freely contact and separate from the outside.

A milling degree adjusting device 33 is mounted on the front surface of the screen pressing plate 29. Rice polishing device 33
Has a device main body 34 in the shape of a partial square tube. The device main body 34 is attached to the front surface of the screen pressing plate 29 by screws 35 and covers the entire front surface of the discharge port 31. A discharge chute 30 is provided between the apparatus main body 34 and the screen pressing plate 29.

A dial mounting cover 36 is fixed to the front surface of the apparatus main body 34, and the dial mounting hole 3 is fixed to the cover 36.
7 are provided (see FIG. 4A). The dial 38 attached to the hole 37 has its outer peripheral brim 39 engaged with the inner peripheral edge of the hole 37 and is prevented from being removed. The center of the dial 38 is on the center line of the resistance plate 32.

A shaft support member 41 having two front and rear support portions 41a and 41b inside the apparatus main body 34 described above.
Is fixed. The rear end of the adjustment shaft 43 is inserted into the center boss portion 42 on the inner surface of the dial 38 so as to be movable in the axial direction. An axial rib 44 is formed inside the boss portion 42, and the adjustment shaft 43 is engaged with the rib 44 so that the adjustment shaft 43 can rotate integrally with the dial 38. The adjustment shaft 43 is inserted and supported by the support portions 41a and 41b in front and behind the shaft support member 41.

At the front end of the adjusting shaft 43 (the end closer to the milling screen 28), two large pitch thread grooves 44 are provided.
Is formed, and the portion of the screw groove 44 is supported by the support portion 41a on the front side. A projection 45 (FIG. 5A) that fits into the screw groove 44 into the insertion hole of the support portion 41a.
(See (b)). Therefore, when the dial 38 is rotated, the adjustment shaft 43 moves with a constant stroke in the front-rear direction according to the rotation direction while rotating integrally with the dial 38.

Between the support portions 41a and 41b, guide portions 46 before and after the guide piece 46 are attached to the adjustment shaft 43.
a and 46b are inserted. Further forward from the front guide portion 46a of the guide piece 46 (the one closer to the rice polishing screen 28)
The resistance plate 32 is integrated with the front end extending to
The guide plate 46 and the resistance plate 32 make the resistance plate set 4
7 is formed.

Between the front guide portion 46a and the rear guide portion 46b, the spring receiving ring 4 is attached to the adjustment shaft 43.
A pressure adjusting spring 49, which is a coil spring, is interposed between the spring receiving ring 48 and the front guide portion 46a, thereby urging the resistance plate set 47 forward, and Is pressed against the discharge port 31 of the rice polishing screen 28 with a required pressure.

As described above, when the dial 38 is rotated, the adjustment shaft 43 moves in a required stroke in the front-rear direction, and the movement causes the pressure adjusting spring 49 to expand and contract, and furthermore, the pressing force applied to the resistance plate 32. Changes the rice milling degree. The boss 42 of the dial 38, the adjustment shaft 43,
The pressure adjusting spring 49 and the resistance plate 32 are respectively arranged on the same center line.

In the case shown in the figure, since the screw groove 44 is a right-hand thread, when the dial 38 is turned to the right (see the arrow in FIG. 4B), the adjustment shaft 43 moves forward, and the pressure adjustment spring 49 is compressed. The pressing force of the resistance plate 32 increases. That is, the degree of rice polishing is increased. FIG. 4B shows a state in which the adjustment stroke of the adjustment shaft 43 in the forward direction is maximized and the degree of milling is maximized. Conversely, when the dial 38 is rotated leftward, the adjustment shaft 4
3 recedes, the pressing force of the resistance plate 32 decreases, and the milling degree decreases. FIG. 4A shows that the adjustment stroke is zero,
Indicates a state where the rice milling degree is the lowest.

In the state shown in FIG. 4A, there is a margin for a predetermined stroke (a maintenance stroke described later) between the rear end of the adjustment shaft 43 and the inner end surface of the boss 42 of the dial 38.

On the other hand, in the above-described rice milling degree adjusting device 33, in order to clean the inside of the screen 28 after the milling operation is completed, it is necessary to discharge the remaining rice inside the screen 28 in advance. It is necessary to retreat greatly from the outlet 31 and open the front of the outlet 31.

For this reason, the present invention employs the following structure. That is, as shown in FIGS. 6A and 6B, a cam substrate 51 protruding in the axial direction is formed on the back surface of the dial 38, and the inclined cam portion 52 is formed on the cam substrate 51.
Is provided. The inclination of the inclined cam portion 52 (FIG. 6B)
Arrow a) has the same inclination as the left-hand thread. That is, the spiral direction of the screw groove 44 of the adjustment shaft 43, which is a right-hand thread, is opposite. The inclined cam portion 52 is formed partially in the circumferential direction of the dial 38, and has a front end located on the screw groove 44 side and a rear end located on the dial 38 side in the axial direction.

An engaging claw 46c provided at the upper end of the rear guide portion 46b of the guide piece 47 engages with the surface of the inclined cam portion 52 on the dial 38 side (see FIG. 4A).
However, the inclined cam portion 5 is adjusted so that the engagement starts in the state of FIG. 4A where the adjustment stroke of the adjustment shaft 43 is zero.
The positional relationship between 2 and the engagement claw 46c is set. That is,
When the dial 38 is rotated counterclockwise from a high milling state to a zero position, the engaging claw 46c abuts on the inner surface of the front end of the inclined cam portion 52, and the engagement starts (the state of FIG. 4A).
Then, when the counterclockwise rotation is further performed, the engaging claw 46c is retracted while being pulled along the inclination of the inclined cam portion 52 (FIG. 6B).
Two-dot chain line, see FIG. 7).

Since the engagement claw 47c is integral with the resistance plate set 47, the resistance plate 32 is forcibly moved by a predetermined distance from the discharge port 31 of the screen 28 by retreating the engagement claw 47c, and the front of the discharge port 31 is released. I do. Thereby, the remaining rice inside the screen 28 can be discharged.

At this time, the adjustment shaft 43 is retracted by the above-described care stroke, and its rear end reaches the inner end surface of the boss 42 of the dial 38 (see FIG. 7). This retreat of the adjustment shaft 43 is a play generated by rotating integrally with the dial 38.

As described above, the turning position of the dial 38 when the resisting plate 32 is forcibly moved and the remaining rice can be removed is referred to as a care position.

When the inside of the screen 28 is to be cleaned, the resistor plate set 47 and the like are removed, but before that, the remaining rice must be treated as described above. If the processing of the remaining rice is forgotten or the processing of the remaining rice is forgotten, and the internal cleaning is performed, the remaining rice including the unpolished rice falls on the polished rice in the rice receiving container 56. Therefore, it is desirable to avoid such a situation. For this purpose, according to the present invention, a convex portion 53 is provided on the side surface of the dial 38 (see FIG. 8), and when the dial 38 is at the above-mentioned care position, the concave cutout portion 54 corresponding to the convex portion 53 is inspected. Dial mounting hole 37 of panel 55
Is formed on the inner peripheral edge.

When the dial 38 is at a position other than the care position (see FIG. 8B), the inspection panel 5
Even if the user attempts to remove the dial 5, it cannot be removed because it is caught by the convex portion 53 of the dial 38. Thus, it is possible to urge the user to finish the remaining rice treatment first and then perform the care.

Next, in another embodiment shown in FIG. 9, a spring tray 48 'is fixed to the adjustment shaft 43, and the pressure is adjusted between the spring tray 48' and the front guide portion 46a of the guide piece 46. A projection 4 provided on the shaft support member 41 is provided in a thread groove 44 'provided on an outer peripheral surface of a spring tray 48' with a spring 49 interposed therebetween.
5 'is inserted. Other configurations and operations are the same as those described above.

[0036]

According to the present invention, as described above, the dial,
Since the adjustment shaft, the pressure adjustment spring, and the resistance plate are arranged on the same axis, the pressing force of the pressure adjustment spring on the resistance plate acts evenly, and stable rice milling can be adjusted.

Further, at the time of care, the resistance plate can be retracted and the discharge port of the screen can be opened only by rotating the dial in the reverse direction from the state of the milling degree, thereby improving the careability.

Further, since there is no possibility that the inspection panel is accidentally removed, no error occurs in the maintenance procedure.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment.

FIG. 2 is a partially exploded perspective view of the same rice milling degree adjusting device.

FIG. 3 is a partially cutaway perspective view of the rice milling degree adjusting device according to the first embodiment;

FIG. 4 (a) is a cross-sectional view of the same rice milling degree adjusting device;

5 (a) is a side view of the adjustment shaft part of the above, and (b) is a sectional view taken along the line bb in FIG. 5 (a).

FIG. 6A is a perspective view of a dial part of the same. FIG. 6B is a plan view of a dial part of the same.

FIG. 7 is a cross-sectional view of the rice-milling degree adjusting device according to the second embodiment in a state where the remaining rice is processed.

8 (a) is a perspective view of an inspection panel part of the above, and (b) and (c) is a front view of a dial part of the same.

FIG. 9 is a cross-sectional view of a rice milling degree adjusting device according to another embodiment.

FIG. 10 is a cross-sectional view of a conventional rice polishing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Rice polishing machine main body 22 Metering rice bin 23 Metering discharger 24 Hopper 25 Rice polishing mechanism part 26 Drive shaft 27 Milling roll 28 Rice polishing screen 29 Screen press plate 30 Discharge chute 31 Discharge port 32 Resistance plate 33 Rice polishing degree device 34 Device main body 35 Screw 36 Dial mounting cover 37 Dial mounting hole 38 Dial 41 Shaft support member 41a, 41b Support portion 42 Boss 43 Adjusting shaft 44 Screw groove 45, 45 'Projection 46 Guide piece 46a Front guide portion 46b Rear guide portion 47 Resistance plate set 48 Spring Receiving ring 48 'Spring tray 49 Pressure regulating spring 50 Rib 51 Cam substrate 52 Inclined cam part 53 Convex part 54 Concave notch part 55 Inspection panel

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Junji Morimoto 1-20-5 Tenma, Kita-ku, Osaka Zojirushi Mahobin Co., Ltd. F-term (reference) 4D043 DA03 DH80 FA10 HA02 HB07 JC02 MA07 MB07

Claims (4)

[Claims] 1. A pressure plate is provided with a pressing force by a pressure adjusting spring for closing a discharge port of a rice polishing screen so as to be able to freely contact and separate from the outside, and the pressing force is changed by rotating a dial to adjust the rice polishing degree. In the rice milling degree adjusting device for a rice milling machine, a shaft supporting member is provided, wherein the adjusting shaft is integrally rotatable with the dial, and is connected to an adjusting shaft that moves in and out of the axial direction with a constant adjusting stroke. And a part of the shaft support member is engaged with a screw groove provided on the adjustment shaft, a guide piece integrated with the resistance plate is slidably fitted to the adjustment shaft, and the adjustment shaft is A milling degree adjusting device for a rice mill, wherein one end of a pressure adjusting spring is engaged and the other end of the pressure adjusting spring is engaged with the guide piece. 2. The pressure-adjusting spring is formed by a coil spring, the pressure-adjusting spring is fitted around the adjustment shaft, and one end of the pressure-adjusting spring is connected to a spring engaging portion of the adjustment shaft. And the guide piece is fitted to a position closer to the resistance plate than the spring engagement portion, the other end of the pressure regulating spring is engaged with the guide piece, and the adjustment shaft is connected to the resistance plate. 2. The rice milling degree adjusting device according to claim 1, wherein the pressure adjusting spring is compressed by moving the pressure adjusting spring forward. 3. A cam substrate extending in the axial direction around the adjusting shaft is provided on the dial, and a cam portion inclined in the spiral direction of the screw groove is formed on the cam substrate. An engagement claw that engages with the portion is provided on the guide piece, and at the rear end of an adjustment stroke in which the adjustment shaft retreats by a rotating operation of the dial in a direction of decreasing rice polishing, the engagement claw is formed in the screw groove. The engagement claw and the cam portion are positioned so as to engage with the front end of the closest cam portion, and the dial is further rotated in the direction of decreasing rice polishing from the engagement start end of the cam portion and the engagement claw. 3. The rice polishing apparatus according to claim 2, wherein the guide piece is forcibly moved in a direction away from an outlet of the rice polishing screen together with the resistance plate. 4. A position where the resistance plate is forcibly moved by rotating the dial as a care position. In the care position, a check is made to cover the protrusion provided on the dial and the front surface of the rice polishing machine body. 4. The rice milling degree adjusting device according to claim 1, wherein the inspection panel can be removed only when the concave portion of the panel matches.