JP2020124145A - Manufacturing apparatus of rice ball - Google Patents

Abstract

To provide a manufacturing apparatus of a rice ball that has a simple structure of a small number of components and no movable part and is suitable to efficiently manufacture a large number of rice balls.SOLUTION: A manufacturing apparatus 1 of a rice ball has a lower die 10 and an upper die 20 covering the lower die 10 and sandwiches boiled rice between both the dies to manufacture a rice ball. The lower die 10 has a bottom face 11a and a lower side face 12a going up from the bottom face 11a. The upper die 20 has a top face 21a and an upper side face 22a going down from the top face 21a. When the boiled rice is sandwiched between the lower die 10 and the upper die 20, the contact area of the upper die 20 with the boiled rice is larger than the contact area of the lower die 10 with the boiled rice.SELECTED DRAWING: Figure 5

Description

TECHNICAL FIELD The present invention relates to a rice ball making machine for sandwiching rice between a lower mold and an upper mold to make a rice ball.

Conventionally, various rice ball making machines have been proposed. Among these, as a rice ball making device for an operator to make a rice ball with his/her own hand, for example, one disclosed in Patent Document 1 is proposed.

This is a product of [Summary]-[Problem], "The shape of the rice grains is maintained and the air between the rice grains is appropriately wrapped. In addition, it is possible to provide a rice ball maker that is hygienic and does not burn the hands with hot rice, and is suitable for outdoor use."

Further, in [Solution Means], "a container 1 having a hollow portion 5 that opens vertically, and a bottom plate 2 that is removable from the container 1 and that closes the lower surface opening of the hollow portion 5 in a mounted state" A lid 3 for pushing the rice contained in the hollow portion 5 from the opening side of the upper surface of the hollow portion 5 and a handle 4 extending from the container 1. The container 1 is provided with a plurality of hollow portions 5. May be displayed.”

JP, 2008-061647, A

However, the above-mentioned conventional rice ball making device can easily produce a delicious rice ball similar to that which is grasped by a hand in which air is appropriately held between rice grains, but the moving part is movable. However, there is a problem that the number of parts is large and the structure is complicated, and it is not suitable for efficiently making a large amount of rice balls.

The present invention has been made in view of the above-mentioned circumstances, and provides a rice ball maker suitable for efficiently manufacturing a large amount of rice balls, which has no moving parts, has a small number of parts, and has a simple structure. The purpose is to

The invention according to claim 1 is a rice ball making machine, which comprises a lower mold and an upper mold, the lower mold is covered with the upper mold, and rice is sandwiched between the two to make a rice ball. Having a bottom surface and a lower side surface rising from the bottom surface, the upper mold has a top surface and an upper side surface descending from the top surface, and when rice is sandwiched between the lower mold and the upper mold, The contact area between the upper mold and the rice is larger than the contact area between the lower mold and the rice.

According to a second aspect of the present invention, in the rice ball making machine according to the first aspect, when the surface formed by the lower edge of the upper side surface is the mating surface, the surface serving as the boundary between the lower die and the upper die is The distance from the top surface to the mating surface is larger than the distance from the bottom surface to the mating surface.

According to a third aspect of the present invention, in the rice ball making machine according to the second aspect, when the center plane is a plane passing through the vertical center between the bottom surface and the top surface, the mating surface is below the center plane. In addition, the upper side surface is fitted inwardly of the lower side surface from above in the center plane.

According to a fourth aspect of the invention, in the rice ball making machine according to the second or third aspect, the lower side surface expands outward toward a portion located on the upper side, and the upper side surface is almost near the lower edge. It is characterized in that it is formed vertically and is fitted into the lower side surface from above.
The invention according to claim 5 is the rice ball making machine according to any one of claims 1 to 4, wherein the upper mold has a handle at the center of the outer surface of the top surface.

The invention according to claim 6 is characterized in that, in the rice ball making machine according to any one of claims 1 to 5, a plurality of lower molds are arranged in a plane to form a lower mold panel.
The invention according to a seventh aspect is characterized in that, in the rice ball making machine according to the sixth aspect, a flat portion is provided at a boundary between a plurality of adjacent lower dies of the lower die panel.

According to the invention of claim 1, the rice ball maker has no moving parts, has a small number of parts only in the lower mold and the upper mold, and has a simple structure, and is suitable for efficiently manufacturing a large amount of rice balls. is there.

In addition, since the contact area between the upper die and the rice is larger than the contact area between the lower die and the rice when the rice is sandwiched between the lower die and the upper die, If you lift the upper mold after sandwiching the rice between the mold and the rice, the rice sticks to the upper mold and is easy to lift. After that, the rice can be picked up with the hand opposite to the one holding the upper mold to finish the rice ball.

According to the invention of claim 2, in the rice ball making machine, since the distance from the top surface to the mating surface is larger than the distance from the bottom surface to the mating surface, the contact area between the upper die and the rice is lower. It can be larger than the contact area with.

According to the invention of claim 3, in the rice ball making machine, the mating surface is located below the central surface, and the upper side surface of the central surface fits inside the lower side surface from above. Therefore, the volume of rice in the upper mold can be made larger than the volume of rice in the lower mold. Therefore, sandwich the rice between the lower mold and the upper mold, and then lift the upper mold, the rice, the lower half of the rice ball corresponding to the lower mold, than the upper half of the rice ball corresponding to the upper mold. It also becomes lighter, and the upper side fits inside the lower side from above, so it is easy to peel off from the lower mold and sticks to the upper mold.

According to the invention of claim 4, in the rice ball making machine, the lower side surface is widened outward toward the upper side portion, and the upper side surface is formed so that the vicinity of the lower edge is substantially vertical. Since it is fitted in the side surface of the above from above, the position of the upper side surface fitted in the lower side surface can be stabilized. That is, the upper die is unlikely to be displaced.

According to the invention of claim 5, in the rice ball making machine, since the upper mold has the handle at the center of the outer surface of the top surface, the operator can easily grasp the handle without touching the rice to hold the upper mold. Can be moved.
According to the invention of claim 6, in the rice ball making machine, a plurality of lower molds are arranged in a plane to form a lower mold panel, so that a large amount of rice balls can be efficiently prepared.

According to the invention of claim 7, in the rice ball making machine, since the flat portion is provided at the boundary between the plurality of adjacent lower molds of the lower mold panel, the rice of the adjacent lower molds can be clearly separated. , The rice ball can be formed cleanly without crushing excess rice grains.

(A) is a plan view showing a lower mold panel P formed by arranging 10 lower molds 10, (B) is a front view, (C) is a left side view, and (D) is a detail of A in (A). FIG. 6E is a sectional view taken along line BB in FIG. FIG. 6 is a perspective view of a lower mold panel P including ten lower molds 10. (A) is a plan view of the upper mold 20, (B) is a front view, (C) is a left side view, and (D) is a detailed view of A in (B). It is a perspective view of the upper mold 20. FIG. 7 is a cross-sectional view of the lower die 10 covered with the upper die 20 including the center C and facing one lower side surface 12 a.

Hereinafter, embodiments to which the present invention is applied will be described in detail with reference to the drawings. In addition, in each drawing, members and the like denoted by the same reference numerals have the same or similar configurations, and repeated description thereof will be appropriately omitted. Further, in each of the drawings, illustration of members and the like unnecessary for the description is appropriately omitted.
<Embodiment 1>
A rice ball making machine 1 according to a first embodiment to which the present invention is applied will be described with reference to FIGS. 1 to 5.

Here, FIG. 1(A) is a plan view showing a lower mold panel P formed by arranging ten lower molds 10, (B) is a front view, and (C) is a left side view. , (D) is a detailed view of A in (A), and (E) is a sectional view taken along line BB in (D).
Further, FIG. 2 is a perspective view of a lower mold panel P including ten lower molds 10.
3A is a plan view of the upper die 20, FIG. 3B is a front view thereof, FIG. 3C is a left side view of the same, and FIG. 3D is a detailed view of A in FIG. Is.
Further, FIG. 4 is a perspective view of the upper mold 20.

5 is a cross-sectional view of the lower die 10 covered with the upper die 20 and including the center C and facing one lower side surface 12a. Note that this cross-sectional view corresponds to the cross-sectional view taken along the line BB in FIG. 1D and the cross-sectional view obtained by extending the cross-section upward.

Hereinafter, a case of making a triangular rice ball will be described as an example, but the rice ball making device 1 of the present invention has a rice ball of a shape other than a triangle, for example, a round or heart-shaped rice ball, or a spherical shape having a stronger three-dimensional effect. It can be applied to make dumplings etc.
The rice ball making machine 1 of the present embodiment includes a lower mold 10 and an upper mold 20 to make a triangular rice ball.

As shown in FIGS. 1 and 5, the lower mold 10 is formed in a relatively thin plate shape and has a bottom portion 11 and three lower side portions 12 that rise from the bottom portion 11. A bottom surface 11a and three lower side surfaces 12a are formed on the inner surfaces of the bottom portion 11 and the three lower side portions 12, respectively.

The bottom surface 11a is formed in a substantially flat triangle, and the lower side surface 12a rises from each of the three sides of the triangle. The lower side surface 12a expands outward as it goes to the upper side. Further, the lower side surface 12a is convexly curved outward from the bottom surface 11a to the inflection point D where the direction of the curve changes, and the upper portion from the inflection point D is concave outward. Is curved. A mating surface H described later is formed near the inflection point D.
As the material of the lower mold 10, for example, PP (polypropylene) or thermoplastic polyurethane can be used.

As shown in FIG. 2, the lower mold 10 constitutes one lower mold panel P by arranging ten of them in a plane. In the lower mold panel P, the flat portion 30 is provided at the boundary between the adjacent lower molds 10, so that the rice of the adjacent lower molds 10 can be clearly separated, without crushing excess rice grains. The rice ball can be molded beautifully.

As shown in FIGS. 3 and 5, the upper mold 20 has a top portion 21 formed in a relatively thin plate shape, three upper side portions 22 and a handle 23 formed in a rod shape. A top surface 21a and three upper side surfaces 22a are formed on inner surfaces of the top portion 21 and the three upper side portions 22, respectively.

The top surface 21a is formed in a substantially flat triangle, and the upper side surfaces 22a hang down (fall) from the three sides of the triangle. The upper side surface 22a is connected to the top surface 21a via a portion that is convexly curved outward.

The lower end edge 22b of the upper side portion 22 is set so as to be located slightly above the inflection point D and is fitted into the lower side surface 12a. That is, when the surface formed by the lower edge 22b of the upper side portion 22 is the mating surface H, the mating surface H is formed slightly above the inflection point D. The upper side portion 22 is formed so that the vicinity of the lower end edge 22b of the upper side surface 22a is formed substantially vertically and is fitted into the lower side surface 12a from above.

Further, as shown in FIG. 3D, an inclined surface 22c having an angle θ is formed on a portion of the outer surface of the lower side portion 22 that follows the lower end edge 22b. As shown in FIG. 5, when the upper mold 20 is fitted into the lower mold 10, the inclined surface 22c of the upper mold 20 is brought into close contact with the lower side surface 12a of the lower mold 10, so that the mating surface H It is kept stable and horizontal without tilting.

As shown in FIGS. 3 to 5, the handle 23 is erected at the center C of the top portion 21 (the outer surface of the top surface 21a). The handle 23 is formed in a substantially cylindrical shape, and has a large-diameter grip portion 23a at the upper end.
As the material of the upper mold 20, for example, PP (polypropylene) or thermoplastic polyurethane can be used.
Here, referring to FIG. 5, the depths a and b of the lower mold 10 and the upper mold 20 will be considered.

If the distance from the bottom surface 11a of the lower die 10 to the mating surface H is the depth a, and the distance from the top surface 21a of the upper die 20 to the mating surface H is the depth b, then b>a in the present embodiment. I am trying. For example, b=15 mm and a=13.5 mm.

By setting the depths a and b in this manner, when rice is packed between the lower mold 10 and the upper mold 20, the contact area of the upper mold 20 with the rice is smaller than that of the lower mold 10 ( Since a large contact length can be obtained, when the upper die 20 is pulled up with respect to the lower die 10 thereafter, the rice sticks to the upper die 20 and can be easily lifted.

Further, as shown in FIG. 5, when the plane passing through the center in the vertical direction between the bottom surface 11a and the top surface 21a is defined as the central plane M (dashed line), the mating surface H is below the central plane M. In addition, the upper side surface 22a of the central plane M is fitted into the lower side surface 12a from above.

At this time, the distance m from the bottom surface 11a to the center plane M is equal to the distance m from the top surface 21a to the center plane M. As described above, when b=15 mm and a=13.5 mm, m=(15 mm+13.5 mm)/2=14.25 mm.
From the above,
b>m (a<m)
Becomes

In the present embodiment, in the center plane M, the upper side surface 22a and the lower side surface 12a overlap each other. That is, in the center plane M, the upper side surface 22a is sandwiched by the lower side surface 12a to prevent the mating surface H from unnecessarily moving when the upper mold 20 is covered with respect to the lower mold 10. ..
Next, a method of using the rice ball making machine 1 having the above configuration will be described.
1 Place the lower mold panel P horizontally on the cooking table.
2 Sprinkle salt on each lower mold 10 of the lower mold panel P, and serve rice on each lower mold 10. At this time, the rice is piled up in heaps in consideration of pressing with the upper mold 20 later.
In addition, when the ingredients are put in the rice ball, after the rice is placed on each lower mold 10, the ingredients are placed at the center of the rice, and the rice is covered so that the ingredients are hidden.

3 Sprinkle salt on the upper mold 20 and press the rice with the upper mold 20. At this time, the rice protruding from the lower mold 10 is collected by the upper mold 20, and then the handle 23 is gripped and the upper mold 20 is lightly pressed.
When the rice balls are sprinkled or sesame is added, it is performed at the same timing as the salt is sprinkled on the lower mold 10 and the upper mold 20.
4 After that, the upper mold 20 is lifted. At this time, the rice is also lifted while being stuck to the upper mold 20.
5 With the hand opposite to the one holding the upper mold 20, receive the rice and shake the upper mold 20 lightly.
6 Rice falls on the opposite hand.
7 Finish the dropped rice into rice balls.
Here, the actions and effects of the rice ball making machine 1 will be summarized.
The rice ball making machine 1 has no moving parts and has a small number of parts, only the lower mold 10 and the upper mold 20, and has a simple structure, and is suitable for efficiently making a large amount of rice balls.

In the rice ball making machine 1, since the contact area between the upper mold 20 and the rice when sandwiching the rice between the lower mold 10 and the upper mold 20 is larger than the contact area between the lower mold 10 and the rice, When the upper mold 20 is lifted after sandwiching the rice between the lower mold 10 and the upper mold 20, the rice sticks to the upper mold 20 and is easily lifted. After that, the rice can be received by the hand opposite to the hand holding the upper mold 20, and the rice ball can be finished.

In the rice ball making machine 1, since the mating surface H is located below the central surface M, and the upper side surface 22a is fitted into the lower side surface 12a from above in the central surface M, The volume of the rice that enters the upper mold 20 can be made larger than the volume of the rice that enters the lower mold 10. Therefore, when rice is sandwiched between the lower mold 10 and the upper mold 20, and then the upper mold is lifted, the lower half of the rice ball corresponding to the lower mold 10 becomes the rice ball corresponding to the upper mold 20. Since it is lighter than the upper half and the upper side surface 22a is fitted into the lower side surface 12a from above, the side surface 22a is easily peeled off from the lower mold 10 and is attached to the upper mold 20 and lifted.

Note that if the opposite is the case, that is, if the mating surface H is above the center surface M (when the upper die 20 is shallower than the lower die 10), the lower half portion of the rice ball is more than the upper half portion. However, when the upper mold 20 is lifted, the rice is peeled off from the upper mold 20 and remains on the lower mold 10 without sticking to the upper mold 20.

In the rice ball making machine 1, as described above, not only the depth b of the upper die 20 is made larger than the depth a of the lower die 10, but also the upper die 20 and the lower die 10 overlap each other at the mating surface H, That is, when the upper mold 20 is inserted into the lower mold 10, the rice is sandwiched between the lower mold 10 and the upper mold 20, and then, when the upper mold 20 is lifted, the rice is lifted up with respect to the upper mold 20. Is possible.

-In the rice ball making machine 1, the lower side surface 12a spreads outward toward the upper portion, and the upper side surface 22a is formed to be substantially vertical in the vicinity of the lower end edge 22b to form the lower side surface 12a. Since it is fitted from above, the position of the upper side surface 22a fitted into the lower side surface 12a can be stabilized. That is, when the lower die 10 is covered with the upper die 20, the upper die 20 is less likely to be displaced with respect to the lower die 10. In order to stabilize the position of the mating surface H, the lower mold 10 and the upper mold 20 may be made of a material having an appropriate flexible texture.

If rice is sandwiched between the lower mold 10 and the upper mold 20 and then the upper mold 20 is lifted with respect to the lower mold 10, the rice easily comes off from the expanded lower side surface 12a. The vicinity of the lower edge 22b sticks to the vertical upper side surface 22a and is easily lifted. After that, when the rice stuck to the upper side surface 22a is separated from the upper side surface 22a, the vicinity of the lower end edge 22b of the upper side surface 22a is close to vertical, so grasp the handle 23 and shake it lightly. It can be easily peeled off from the upper side surface 22a.

Since the upper die 20 of the rice ball making machine 1 has the handle 23 at the center of the outer surface of the top surface 21a, the operator can easily move the upper die 20 by gripping the handle 23 without touching the rice. You can
Since the rice ball making machine 1 forms the lower mold panel P by arranging a plurality of lower molds 10 (10 in the above description) in a plane, it is possible to efficiently make a large amount of rice balls.

Since the rice ball making machine 1 has the flat portion 30 at the boundary of the plurality of adjacent lower molds 10 of the lower mold panel P, the rice of the adjacent lower molds 10 can be clearly separated, and the extra rice can be separated. The rice ball can be formed cleanly without crushing the rice grains.
Furthermore, there are the following actions and effects.

-The rice ball making machine 1 can be operated while the lower mold panel P provided with a plurality of lower molds 10 (10 in the above example) is placed on the table without being inverted or moved on the table. Therefore, preparation for making a plurality of (10) rice balls can be done collectively with both hands, so that a large amount of rice balls can be prepared efficiently.

As described above, the rice ball maker 1 is suitable for commercial use (restaurants and schools) because it can efficiently make large quantities of rice balls, and can also be used for cooking in the event of a disaster.

-Since the rice ball making machine 1 has a simple structure and is simple to use, it can be easily used by people without specialized skills (people who have never grasped rice balls, foreigners).

The onigiri maker 1 described above can be applied to sushi, sushi rolls (ehomaki, seaweed rolls, temari sushi), etc. by appropriately changing the shape without changing the features.

1 Rice ball making machine 10 Lower mold 11 Bottom 11a Bottom 12 Lower side 12a Lower side 20 Upper mold 21 Top 21a Top 22 Upper side 22a Upper side 22b Lower edge 23 Handle a From bottom of bottom Distance to surface (depth)
b Distance from the top surface of the upper die to the mating surface (depth)
C center H mating surface M center surface P lower panel

Claims (7)

In a rice ball making machine, which comprises a lower mold and an upper mold, the lower mold is covered with the upper mold, and rice is sandwiched between the two to make a rice ball,
The lower mold has a bottom surface and a lower side surface that rises from the bottom surface,
The upper mold has a top surface and an upper side surface that descends from the top surface,
When sandwiching rice between the lower mold and the upper mold, the contact area between the upper mold and the rice is larger than the contact area between the lower mold and the rice,
A rice ball making machine characterized by that. In the surface formed by the lower edge of the upper side surface, when the surface serving as the boundary between the lower die and the upper die is a mating surface, the distance from the top surface to the mating surface is from the bottom surface. Greater than the distance to the mating surface,
The rice ball maker according to claim 1, wherein When the center plane is a plane that passes through the center in the vertical direction between the bottom surface and the top surface, the mating surface is located below the center plane, and the upper side surface in the center plane. Is fitted from above into the inside of the lower side surface,
The rice ball maker according to claim 2, wherein As for the lower side surface, the portion located on the upper side expands outward,
The upper side surface is formed so that the vicinity of the lower end edge thereof is formed substantially vertically and is fitted into the lower side surface from above.
The rice ball maker according to claim 2 or 3, characterized in that. The upper mold has a handle at the center of the outer surface of the top surface,
The rice ball maker according to any one of claims 1 to 4, wherein A plurality of the lower molds are arranged in a plane to form a lower mold panel,
The rice ball making machine according to any one of claims 1 to 5, wherein In the lower mold panel, a flat portion is provided at a boundary between the plurality of adjacent lower molds,
The rice ball maker according to claim 6, wherein

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