JP3643435B2 - Rice bin weighing device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a rice bin weighing device that can store and store rice and weigh it in units of one unit, for example.
[0002]
[Prior art]
Conventionally, an apparatus of this kind is known as shown in FIG. In FIG. 1, reference numeral 1 denotes a weighing device attached to a rice outlet of a rice storage unit, a weighing chamber 2 in which a certain amount of rice is accommodated, and a weighing bowl 3 for weighing a certain amount of rice by dividing the weighing chamber 2. And a measuring key 4 for swinging the measuring rod 3.
[0003]
The metering chamber 2 has a rice inlet 2a at the top and a rice outlet 2b at the bottom, and the metering tub 3 is a valve that opens and closes the rice inlet 2a of the metering chamber 2 at the top. A portion 3a is provided, and a valve portion 3b for opening and closing the rice outlet 2b of the measuring chamber 2 is provided at the lower portion. The metering tub 3 is biased by the springs 5 and 6 so that the valve portion 3a normally opens the rice inflow port 2a and the valve portion 3b blocks the rice outflow port 2b.
[0004]
As a result, the rice from the rice storage part is accommodated in the measuring chamber 2 and the measuring key 4 is pushed downward to swing the measuring pad 3 against the bias, and the valve part 3a opens the rice inlet 2a. In addition to shutting off, the valve portion 3b opens the rice outlet 2b to measure and discharge a certain amount of rice.
[0005]
[Problems to be solved by the invention]
By the way, in such a rice weighing device, since the weighing chamber 2 is formed linearly, the weighing device 1 becomes longer, the ratio of the weighing portion in the rice bin becomes larger, and the rice storage portion becomes smaller. There was a problem that the storage capacity was reduced.
[0006]
In addition, since there is no resistance to the flow of rice into the measuring chamber 2, the rice is stored densely in the measuring chamber 2, and the force to press the measuring key 4 is increased and the measuring rod is increased. The three valve portions 3a and 3b have a problem that rice is often bitten.
[0007]
Further, if the measuring key 4 is not pressed completely, all the rice is not discharged and remains in the measuring chamber 2, and when the measuring rod 3 returns to the normal state, the valve portion 3b of the rice outlet 2b measures the rice. In the conventional metering device in which rice is stored densely because it is pushed up to the chamber side, the valve portion 3b is not completely closed, and there is a problem that a gap is formed and the rice is spilled. Although measures such as increasing the power have been taken, there was a problem that the force to press the measuring key 4 increased.
[0008]
[Means for Solving the Problems]
In order to solve such problems, the present invention provides a weighing chamber connected to a rice storage chamber and having a rice inlet at the top and a rice outlet at the bottom, and a weighing tank that discharges a certain amount of rice by separating the weighing chamber. And a weighing key for rotating the weighing rod, wherein the weighing rod is provided with a first valve portion that shuts off the rice inlet of the weighing chamber at the upper portion, and at the lower portion of the weighing chamber. A second valve portion for blocking the rice outlet, and forming a rice storage portion for storing rice between the first valve portion and the second valve portion; A space where rice is not stored is formed in the vicinity of the first valve portion, the weighing chamber forms a chute portion inclined from the rice storage chamber side toward the inner surface, and the end of the chute portion and the rice outlet A rice storage part is formed between which rice is stored, and the rice storage part has a predetermined clearance from the tip of the first valve part when the measuring rod is rotated. To form a convex portion which projects inwardly to allow, rice near the convex portion of the US housing portion is obtained by forming a cavity that is not stored.
[0009]
[Action]
In a normal state, rice from the rice storage unit is accommodated in the measuring chamber in which the rice inlet is opened and the rice outlet is closed by the second valve portion of the measuring basket. At this time, the rice in the measuring chamber is The rice storage unit formed in the weighing bowl and the rice storage unit formed in the weighing chamber are each stored so as to have a space. When the operating lever is pushed downward from this state, the measuring rod rotates, and the tip of the first valve portion is guided by the convex portion of the measuring chamber with a gap that does not allow rice to flow, and the rice inlet is While shutting off, the second valve portion is opened, and a predetermined amount of rice is discharged from the rice outlet.
[0010]
At this time, since the first valve portion of the measuring rod is formed with a space that does not contain rice, the operation lever can be operated with a relatively weak force without crushing the rice. Thereafter, when the operating lever is released, the measuring rod returns to the normal state, that is, the rice inflow opening is opened and the rice outflow opening is closed by the biasing force of the spring.
[0011]
If the lever is returned by mistake without fully pressing the control lever, the rice in the weighing chamber will not be completely discharged, and the rice from the rice inflow will flow in, so it will be stored in the weighing chamber. Although the density of rice increases, a space that does not contain rice is formed in the storage section of the weighing chamber, so when the second valve section tries to close the rice outlet, the rice is not in that space. It is absorbed and the second valve part can return the rice outlet to a completely closed state.
[0012]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 2 is an internal cross-sectional view of a rice bottle employing the present invention. Reference numeral 10 denotes a rice bottle body, which includes a rice storage chamber 11 for storing rice and a weighing device 12 for measuring and discharging the rice in the rice storage chamber 11. doing. Reference numeral 13 denotes a rice loading lid which is attached to and detached from the upper surface of the rice storage chamber 11 and is attached and detached when the rice storage chamber 11 is replenished with rice. 14 is a front plate provided on the front surface of the rice box body 10 including the weighing device 12, and includes a viewing window 15 for visually confirming the remaining amount of rice in the rice storage chamber 11 and a weighing key 16 for operating the weighing device 12. . Reference numeral 17 denotes a rice receiver which is located below the weighing device 12 and is provided at the lower part of the main body 10 so as to be drawn out. The rice receiver 17 takes out the rice weighed by the weighing device 12.
[0013]
FIG. 3 is an enlarged explanatory view of the vicinity of the weighing device 12, and the characteristic configuration of the present invention will be described using this. Reference numeral 18 denotes a weighing chamber, which is formed in a U-shape in plan view with the top, bottom and front surfaces open, and is fitted and fixed to the rice discharge port 11a of the rice storage chamber 11 formed in a funnel shape. , A rice outlet 18b is formed at the bottom, and a measuring rod 19 for interrupting the flow of rice between the rice inlet 18a and the rice outlet 18b is rotatably attached to the front surface.
[0014]
The measuring bowl 19 is provided with an arc-shaped shielding plate 19a for opening and closing the rice inlet 18a of the measuring chamber 18 at the upper portion, and a flat shielding plate 19b for opening and closing the rice outlet 18b of the measuring chamber 18 at the lower portion. Is formed. In addition, a shaft rib 19c through which the shaft pin 20 penetrates is formed on the back surface of the measuring rod 19 at a position that is approximately the center between the shielding plates 19a and 19b, and the measuring rod 19 is rotatably supported. .
[0015]
Further, a fan-shaped push-up rib 19d extending to the horizontal position of the shaft rib 19c is formed on the back surface of the measuring rod 19 together with the arc shape of the upper shielding plate 19a, and the tip of the measuring key 16 acts. The measuring rod 19 is rotated.
[0016]
The measuring key 16 is provided with a pressing portion 16a so that a finger is placed on the front side, and a substantially Z-shaped operating arm 16b having a right angle at each corner extends from the pressing portion 16a toward the measuring rod 19. A shaft hole 16c through which a shaft pin 21 that swings and supports the measuring key 16 is opened at a substantially central portion of the operation arm 16b, and a groove portion 16d through which the push-up rib 19d of the measuring rod 19 is guided is formed at the tip. Is provided. The groove 16d is provided with a support rib 16e that pushes up the push-up rib 19d when the operation arm 16b is swung to rotate the measuring rod 19, and prevents the push-up rib 19d from bulging upward so as not to come off the groove 16d. Ribs 16f are formed.
[0017]
Reference numeral 22 denotes a spring which is attached around the shaft pin 20 of the measuring rod 19 to urge the shielding plate 19b of the measuring rod 19 to block the rice outlet 18b of the measuring chamber 18 and It is attached around the shaft pin 22 and urges the pressing portion 16a of the measuring key 16 to be horizontal. The measuring rod 19 and the measuring key 16 are normally urged by this one spring. is there. Reference numeral 23 denotes a stopper that locks the measuring key 16 so that it cannot be pressed, and is slidably fitted to the front plate 14.
[0018]
Next, the shapes of the measuring chamber 18 and the measuring rod 19 will be described in more detail. On the inner surface of the weighing chamber 18, the chute 24 is inclined inward so as to guide the rice from the rice storage chamber 11 to the weighing unit A, and is inclined so as to return backward from the tip of the chute 24. The housing part 25 having a semicircular cross section formed so as to incline inwardly as it goes downward, and an inclined surface returning to the rear of the housing part 25, are provided at the tip of the shielding plate 19a when the measuring rod 19 is rotated. The convex part 26 which interrupts | blocks the inflow of rice with the part is formed.
[0019]
A guide wall 27 that prevents the rice from being scattered in the back of the rice receiver 17 due to the tilt of the measuring rod 19 is formed below the storage portion 25, and the weighing is performed at the lower end of the storage portion 25. A rib 30 having a triangular cross section protrudes from the lower shielding plate 19b of the ridge 19 at a portion that prevents the rice from flowing out. As a result, the tip of the lower shielding plate 19b of the measuring rod 19 comes into contact with the rib 30, and a gap of about one grain of rice is formed from the lower end of the accommodating portion 25, so that biting of rice can be prevented. ing.
[0020]
On the other hand, a rice storage portion 28 having a substantially U-shaped cross section is formed between the upper shielding plate 19a and the lower shielding plate 19b. The accommodating portion 28 is formed above the shaft rib 19c, and the push-up rib 19d is provided on the back surface.
[0021]
In addition, a support 29 having a gap is provided on the front side of the rice outlet 18a that is opened and closed by the upper shielding plate 19a of the measuring rod 19, so that rice is not caught by the operation of the shielding plate 19a. The part has a shape that protrudes inward, and its tip is widened to restrict the inflow direction of rice.
[0022]
Next, the operation of the weighing device of the present invention configured as described above will be described. In the normal state, rice is stored in the measuring section A surrounded by the measuring chamber 18 and the measuring bowl 19, but in the rice receiving section 28 of the measuring bowl 19, the inflow direction of the rice is restricted by the support 29 so that the rice is in the upper part. A void C that does not contain rice is formed. When the measuring key 16 is pushed from this state, the supporting rib 16e of the operation arm 16b pushes the push-up rib 19d of the measuring rod 19 so that the measuring rod 19 rotates. At this time, the rice storage density is low in the vicinity of the upper shielding plate 19a of the weighing basket 19, so that the weighing basket 19 operates smoothly and less bites the rice.
[0023]
When the weighing key 16 is completely pushed in, the upper shielding plate 19a blocks the rice inlet 18a, the lower shielding plate 19b opens the rice discharge port 18b, and a certain amount (one in this case) of rice is placed in the rice receiver 17. Discharged. At this time, a slight gap S <b> 1 (about 1.5 mm in this case) less than one grain in the short direction of the rice grains is formed between the upper shielding plate 19 a and the convex portion 26 of the weighing chamber 18, and the weighing chamber 18. A gap S2 (about 5 mm in this case) for one grain of rice grains in the longitudinal direction is also formed between the inner surface and the upper shielding plate 19a to prevent biting of the rice.
[0024]
Thereafter, when the measuring key 16 is released, the measuring key 16 and the measuring rod 19 are returned to the normal state by the urging of the spring 22, and the rice is again stored in the measuring unit A. In such a normal state, similarly to the rice accommodating portion 28 of the measuring tub 19, the rice accommodating portion 25 of the measuring chamber 18 is formed with a void B in which rice is prevented from flowing by the convex portion 26 and does not accommodate rice. .
[0025]
According to this, for example, when the measuring key 16 is not fully pushed in and is released halfway, the rice remains in the measuring unit A, and further the rice flows from the rice inflow port 18a. Although it becomes density, since the void B where the rice is not accommodated is formed in the rice accommodating portion 25, it is possible to prevent the lower shielding plate 19b of the measuring rod 19 from returning to the normal state.
[0026]
【The invention's effect】
Since the rice biscuit weighing device of the present invention is configured as described above, the weighing unit can be downsized and the rice storage unit can be enlarged. In addition, since a space where rice is not accommodated is formed in the rice accommodating portion formed between the upper shielding plate and the lower shielding plate of the weighing bowl, the force for pressing the weighing key is small, and the usability is good. Furthermore, since the empty space where rice is not stored is formed in the rice storage part of the measuring chamber, the lower shielding plate of the measuring rod does not return to the normal state even when the measuring key is completely returned. Rice biting can also be prevented.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a conventional rice biscuit weighing device.
FIG. 2 is an internal cross-sectional view of a rice bin equipped with the weighing device of the present invention.
FIG. 3 is an explanatory view showing a weighing device of the present invention.
FIG. 4 is an enlarged explanatory view of a measuring chamber 18 and a measuring rod 19 of the apparatus.
FIG. 5 is an explanatory view showing an operating state of the apparatus.
[Explanation of symbols]
16 Weighing key 18 Weighing chamber 18a Rice inlet 18b Rice outlet 19 Weighing bowl 19a Upper shielding plate (first valve part)
19b Lower shielding plate (second valve part)
24 Chute wall 25 Rice storage part 26 of measuring chamber 18 Convex part 28 Rice storage part 29 of measuring bowl 19 Support body A Measuring part B Space C of rice storage part 25 Cavity of rice storage part 28

Claims (1)

A weighing chamber connected to the rice storage chamber and having a rice inlet at the top and a rice outlet at the bottom, a weighing bowl for separating the weighing chamber and discharging a certain amount of rice, and a weighing key for rotating the weighing bowl In the provided weighing device,
The measuring trough has a first valve portion that shuts off the rice inlet of the metering chamber at the top, and a second valve portion that shuts off the rice outlet of the metering chamber at the bottom. Forming a rice storage portion in which rice is stored between the valve portion and the second valve portion, and forming a void in which rice is not stored in the vicinity of the first valve portion of the rice storage portion;
The weighing chamber forms a chute portion that is inclined from the rice storage chamber side toward the inner surface, and forms a rice storage portion in which rice is stored between the terminal end of the chute portion and the rice outlet, and the rice storage A convex portion that protrudes inward to form a predetermined gap with the tip of the first valve portion when the measuring rod is rotated, and rice is not stored in the vicinity of the convex portion of the rice accommodating portion A rice biscuit weighing device characterized by forming a void.

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