JP2808084B2 - Weighing rice bin - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weighing rice bin of a type in which weighing operation is manually performed.

[0002]

2. Description of the Related Art Several weighing levers are provided adjacent to a rice bin which is manually weighed, and a predetermined amount of rice is taken out by selectively operating each weighing lever. In order to avoid child mischief when not in use, a stopper mechanism is arranged near the weighing lever, and when the switching knob is switched to the locked state,
All weighing levers cannot be pushed down. A metering rice bin having such a lock mechanism is known, for example, from Japanese Utility Model Publication No. 6-37294.

[0003]

Such a conventional stopper mechanism has a structure in which all of a plurality of measuring levers are simultaneously held in a locked state or an unlocked state. Moreover, the measuring levers are arranged in a row adjacent to one operation space. Therefore, even if the weighing lever different from the weighing lever to be operated is operated, the weighing of the rice can be performed without any trouble, and the erroneous operation is likely to occur. It is not unusual for a person to notice excess or deficiency of rice during the rice washing stage without noticing erroneous operation. If the stopper mechanism breaks down and the switching operation to the unlocked state becomes impossible, all the weighing levers cannot be operated, and there is also an inconvenience that the rice must be taken out from the slot.

An object of the present invention is to provide a measuring rice bin having a stopper mechanism which can effectively prevent erroneous operation of the measuring lever. An object of the present invention is to provide a weighing rice bin in which weighing levers are arranged in dedicated operation spaces defined corresponding to the respective levers and are less likely to cause an erroneous operation structurally. SUMMARY OF THE INVENTION An object of the present invention is to provide a stopper mechanism for a measuring lever, which has a small number of components and can be assembled with less labor.

[0005]

According to the present invention, there is provided a main body case (1).
In a measuring rice bin provided with a plurality of measuring levers 9 at a front portion thereof and a stopper mechanism for switching and holding the measuring levers 9 between a locked state and an unlocked state, each of the measuring levers 9 has an upper standby position. The stopper 27 is provided for each weighing lever 9 on the outer surface of the main body case 1 facing the movement locus of the weighing lever 9. That is, the stopper 27 is supported by the main body case 1 so as to be switchable between a locked position where the measuring lever 9 enters the movement locus and an unlocked position where the stopper 27 retreats outside the movement locus. It is characterized by. Specifically, a plurality of operation recesses 24 are provided on the front surface of the main body case 1, and the measuring lever 9 and the stopper 27 are arranged in each operation recess 24.

[0006]

[Operation] A stopper 27 is provided for each measuring lever 9,
Since the weighing lever 9 is individually switched between the locked state and the unlocked state by each stopper 27, unless the target stopper 27 is unlocked and the unlocked weighing lever 9 is not further operated, rice can be taken out. Can not. That is, the possibility of misuse can be confirmed twice. If only the stopper 27 of one commonly used measuring lever 9 is unlocked and the other stoppers 27 are switched to the locked state, the unusual measuring lever 9 can be unlocked.
Is operated by mistake, the weighing lever 9 does not operate. Since a dedicated operation concave portion 24 is provided for each of the measuring levers 9, unless the user inserts a fingertip into the operation concave portion 24 with a clear intention, the user cannot touch or operate the adjacent measuring lever 9.

[0007]

According to the present invention, a separate stopper 27 is provided for each of the plurality of weighing levers 9, and each of the stoppers 27 can be independently switched between the locked state and the unlocked state. The possibility of erroneous use can be confirmed twice, and erroneous operation of the weighing lever 9 can be prevented by that much, so that proper rice can be weighed and taken out. If the measuring lever 9 other than the commonly used measuring lever 9 is locked by the stopper 27, even if this measuring lever 9 is operated by mistake,
Can be prevented from operating, and it is possible to prevent an excessive or insufficient amount of rice from being taken out, so that an appropriate amount of rice can always be taken out.
Since the dedicated operation concave portion 24 is provided for each of the weighing levers 9, there is no possibility of erroneously operating the weighing levers 9 other than the intended weighing lever 9, so that erroneous operation of the weighing reher 9 can be prevented more reliably.

[0008]

1 to 6 show an embodiment of a measuring rice bin according to the present invention. In FIG. 2, the measuring rice bin has a lid 2 for opening and closing a rice inlet at an upper portion of a vertically long rectangular box-shaped main body case 1, and a rice receiving bowl 3 which can be put in and out from the front at a lower end.
Is provided. Most of the inside of the main body case 1 is a storage room, and a weighing mechanism is arranged at a lower portion of the storage room.

In FIG. 3, the weighing mechanism is a hopper 4
A drum frame 5 attached to the discharge port 4a of the first and third measuring drums 7 rotatably supported by the drum frame 5 via a shaft 6,
Three operation levers 8 for rotating each measuring drum 7,
It comprises three measuring levers 9 fixed to the tip of each operating lever 8. The measuring drum 7 is formed in a cylindrical shape, and an inlet 10 and an outlet 11 are opened at two places on the circumferential wall. In the standby state shown in FIG. 3, the entrance 10 of the measuring drum 7 faces the discharge port 4a. By rotating the measuring drum 7 in the direction of the arrow from this state, the entrance 1
0 is closed and then the outlet 11 is opened so that the rice stored in the drum can be discharged to the rice receiving bowl 3. The measuring drum 7 has three large and small drums having different contents adjacent to each other.

The operating lever 8 has a boss 14 whose center is supported by a shaft 13. An arm 15 projects from one side of the boss 14 toward the front of the case. 16 is protruded. The gear teeth of the sector gear 16 mesh with a passive gear 17 provided at the outer end of the measuring drum 7. Thus, when the operation lever 8 is operated to swing downward by the measuring lever 9, the measuring drum 7 can be rotated. Operation lever 8
Is a torsion coil type return spring 18 having one end hooked to the arm 15 and is urged to swing upward toward the standby position. Although not shown, the shaft 13 is supported by a bracket provided integrally with the drum frame 5.

The measuring lever 9 has a quadrangular lever base 20 having a U-shaped cross section, a horn-shaped operation part 21 protruding from an outer surface of a middle part of the lever base 20, and a projection part protruding from a lower inner surface of the operation part 21. This is a plastic molded product in which the mounting portion 22 is integrally formed, and the mounting portion 22 is externally fitted to the protruding end of the arm 15 and fastened with a screw 23 to be integrated with the operation lever 8.

1 and 2, an operating recess 24 is provided on the front panel 1a of the main body case 1 corresponding to each of the three measuring levers 9, and the operating portion 21 of each measuring lever 9 is provided on the inner surface of the case. It protrudes into the operation recess 24 from the side. In the standby state when not in use, the operation unit 21 is located above the operation recess 24, and the rear surface of the upper end of the lever base 20 is received by the stopper piece 4 b provided on the hopper 4. From this state, the operation unit 21 can be pressed down to the measurement position where the upper front surface of the lever base 20 contacts the stopper piece 24a provided on the inner deep wall of the operation recess 24. The three operation recesses 24 are formed integrally when the front panel 1a is formed, and are independent from each other while being adjacent via the partition wall 25.

In order to individually switch and hold each of the measuring levers 9 between a locked state and an unlocked state, stoppers 27 are provided at the inner bottom of each operation recess 24, and a lever base of the measuring lever 9 opposed to each stopper 27 is provided. 20
A lock hole 28 with which the stopper 27 engages and disengages is recessed. 4 to 6, the stopper 27 is a square plastic molded product in which a finger hook 29 is formed in the upper surface and a wedge-shaped engaging portion 30 is formed in the inner end of the case. Each of the left and right side surfaces has a horizontal slide groove 31 and two articulating recesses 32, and has a step portion 33 (see FIG. 3) for preventing falling at the center of the bottom.

The stopper 27 is inserted into a lock hole 28 in the movement locus of the measuring lever 9 as shown in FIG. 1, and the lock is released from the lock hole 28 out of the movement locus of the measuring lever 9 as shown in FIG. A slide switching operation is performed between the front and rear positions. For this purpose, as shown in FIG. 4, guide ribs 35 are provided on the left and right inner side walls of the operation recess 24, respectively.
Are projected in opposition, and the pair of guide ribs 35 guide and support the slide groove 31 of the stopper 27. Articulating claw 36 that can be elastically deformed in the left-right direction below both guide ribs 35
And the articulating claw 36 is engaged with the articulating recess 32. The articulating claw 36 engages with one of the articulating recesses 32 to hold the stopper 27 at each of the locked position and the unlocked position, and prevents the stopper 27 from sliding and displacing beyond each position. I do.

An engagement claw 37 projecting from the center of the bottom of the operation concave portion 24 also comes into contact with and engages with the step portion 33 of the stopper 27 to prevent the stopper 27 from coming out of the case. The guide rib 35, the articulation claw 36, and the engagement claw 37 are all integrally formed with the front panel 1a, and thus do not need to be assembled. In FIG. 4, the stopper 27 is inserted into the recess from the outer surface side of the operation recess 24, and the slide groove 31 is pushed along the guide rib 35, so that the stopper 27 can be incorporated into the operation recess 24 very easily. At the time of this pushing, the articulating claw 36 is elastically deformed to the left and right outer sides and is accommodated in the articulating concave portion 32, and the step portion 33 elastically deforms the engaging claw 37 downward and passes through. In the unlocked position, the front end surface of the stopper 27 is flush with the front surface of the front panel 1a. When the stopper 27 is arranged inside the front surface of the front panel 1a in this way, the stopper 27 does not stick out, so that clothes are not caught and dust is hard to collect.

The stopper 27 can be slid to the locked position only when the measuring lever 9 is at the standby position. In the locked state, the engaging portion 30 is
To prevent the measuring lever 9 from swinging downward. Therefore, during use, after the stopper 27 of the weighing lever 9 to be weighed is unlocked, the rice cannot be weighed unless the unlocked weighing lever 9 is pressed down, and the user cannot perform the weighing operation. You can confirm the correctness twice. Since the dedicated operation concave portion 24 is provided as an independent section for each weighing lever 9, there is no erroneous operation of the adjacent weighing lever 9 and even if the wrong weighing lever 9 is operated, it swings downward. There is no. In other words, erroneous operations can be prevented multiple times.

FIG. 7 shows another embodiment of the present invention relating to the stopper 27. In this case, the stopper 27 engages with a lock piece 39 projecting from the front surface of the lower end of the lever base 20 to lock the measuring lever 9. Hold. For this purpose, an engaging portion 30 having a hook-shaped cross section is integrally provided on the lower surface of the stopper 27, and the stopper 27 is connected to the measuring lever 9 as shown by an imaginary line.
Side, the engaging portion 30 is locked by the locking piece 39.
And prevents downward movement of the measuring lever 9. Other configurations are the same as those in the above embodiment.

FIG. 8 shows another embodiment of the present invention relating to the stopper 27. In this case, the stopper 27 is slid left and right to switch between a locked state and an unlocked state. For details, see the front panel 1a.
The stopper 27 is freely slidably guided and supported only by the guide rib 35a protruding from the front surface of the front end of the operation recess 24 and the inner bottom wall 24b of the operation concave portion 24.
0 is provided. Two articulating recesses 41 are formed on the inner bottom wall 24b side corresponding to the articulating claws 40. Further, a lock piece 39 protrudes from one side of the front surface of the lever base 20, and engages with the lock piece 39 so as to be externally fitted.
Is formed on the rear surface of the stopper 27. Stopper 27
The solid line indicates the unlocked state, and when the slide operation is performed in the direction indicated by the arrow, the engagement groove 42 engages with the lock piece 39, and the downward swing of the measuring lever 9 is prevented.

FIG. 9 shows another embodiment of the present invention with respect to the operating recess 24, in which three measuring levers 9 are arranged adjacent to one operating recess 24. However, three small recesses 43 into which the operation unit 21 of each measuring lever 9 enters in the standby state are provided above the operation recess 24, and each of the recesses 43 is provided.
Are partitioned by the partition wall 25.

In addition to the above, the stopper 27 is connected to the measuring lever 9.
If it is on the outer surface of the main body case 1 facing the movement trajectory, it may be provided anywhere. The measuring lever 9 can take a form in which the measuring lever 9 slides up and down. The metering mechanism need not be of the rotary drum type shown in the embodiment.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing a measuring lever and a stopper mechanism thereof.

FIG. 2 is an external perspective view of a measuring rice bin.

FIG. 3 is a vertical sectional side view of a weighing mechanism.

FIG. 4 is an exploded perspective view of the stopper mechanism as viewed from the inside of the case.

FIG. 5 is a sectional view taken along line AA in FIG. 3;

6 is a sectional view taken along line BB in FIG.

FIG. 7 is a longitudinal sectional side view showing another embodiment of the stopper mechanism.

FIG. 8 is a cross-sectional side view showing still another embodiment of the stopper mechanism.

FIG. 9 is a front view showing another embodiment of the operation concave portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 9 Measuring lever 24 Operation concave part 27 Stopper 28 Lock hole 30 Engagement part

Claims (2)

(57) [Claims] 1. A weighing rice bottle provided with a plurality of weighing levers 9 at a front portion of a main body case 1 and a stopper mechanism for switching and holding the weighing levers 9 between a locked state and an unlocked state. The lever 9 is provided so as to be vertically operable between an upper standby position and a lower weighing position, and is provided on an outer surface of the main body case 1 facing a movement locus of the weighing lever 9.
A stopper 27 is provided for each of the weighing levers 9, and the stopper 27 is provided between a locked position where the weighing lever 9 moves into the movement locus and an unlocked position where the stopper moves out of the movement trajectory of the weighing lever 9. A metering rice bin supported on the main body case 1 so as to be switchable between the two. 2. The measuring rice bin according to claim 1, wherein a plurality of operation recesses are provided on a front surface of the main body case, and a measuring lever and a stopper are arranged in each operation recess.