JPH0744977Y2 - Meter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a weighing machine applied to, for example, weighing rice bins.

[Prior Art] As a conventional measuring instrument of this type, for example, as shown in FIG. 4, a handle 4 of a lever 3 is arranged in a recess 2 formed in the front surface of a body 1, and the handle 4 is pushed down. As a result, the shutter 5 is rotated clockwise in conjunction with the rotating lever 3, whereby a certain amount of the content accumulated in the measuring chamber 6 is dropped onto the ball 7. Has been.

Further, as shown in FIG. 5, a pushing lever 57 which closes the hole 53 when not in use is provided in the concave portion 52 on the front surface of the body 1, and the shutter 51 is depressed by pushing down the lever 57.
There is also a weighing instrument in which the contents of the weighing chamber 55 are dropped by rotating the.

[Problems to be Solved by the Invention] However, in the measuring instrument shown in FIG. 4, dust enters the operating portion and the ball 7 in the instrument from the guide hole 8 formed for the rotation of the lever 3. Unhygienic,
Moreover, since dust is likely to accumulate in the recess 2, it has to be cleaned frequently.

Even when placed on the scale of FIG. 5, when the lever 57 was pushed in, there was a drawback that dust entered into the scale through the hole 53.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a weighing instrument capable of preventing the accumulation of dust in the lever operation portion and the intrusion of dust into the instrument.

[Means for Solving the Problems] In order to achieve the above object, a weighing machine according to the present invention is a weighing machine in which a case and a shutter which opens and closes in conjunction with the rotation of a lever form a weighing chamber of a predetermined volume. A lid accommodating chamber having an operation window is formed inside the front surface of the body, and in the lid accommodating chamber, a sliding lid which is urged upward and abuts on the lower end of the lever, and the sliding lid. The movable lid is rotatably attached to the upper end window side and accommodates a rotating lid biased in the upright direction, and the sliding lid and the rotating lid close the window.

[Operation] When not in use, the window is closed by the standing rotating lid and sliding lid. When taking out the object to be weighed, the rotary lid is pushed down to incline, and if it is pushed down as it is, the lever is rotated to open the shutter, and a predetermined amount of the object to be weighed falls from the weighing chamber. Even when this is taken out, the inside of the container is shut off from the outside by the tilted rotating lid.

[Embodiment] FIGS. 1 to 3 show a weighing rice bin as an embodiment of the present invention, in which a case 13 fixed below a hopper 12 installed at the lower end of a storage chamber 11 for rice 10 is shown. And a shutter 15 rotatably attached to the fixed shaft 14 form a measuring chamber 16 having a constant volume. The shutter 15 is biased counterclockwise by a spring 17 wound around a fixed shaft 14, and normally a lid portion 15a on the upper portion thereof is a case 1 as shown in FIG.
3 The rice supply port 18 at the top is open. Reference numeral 19 denotes a lever rotatably mounted on the fixed shaft 20 and urged clockwise by a spring 21 so that an upward convex portion 19a formed at the tip of the lever abuts a sliding lid 27 described later. In addition, the downward convex portion 19b formed on the lower portion is in contact with the shutter 15.

Next, the operation portion 22 formed on the front plate 23 of the body will be described. A cover 24 having a vertical partition plate 24a is attached to the inner surface of the front plate 23 to form a plurality of lid accommodating chambers 25,
The front plate 23 has a plurality of vertically elongated windows 26 communicating with the lid accommodating chamber 25. Each lid accommodating chamber 25 has a horizontal closing plate 27.
A sliding lid 27 having a is housed slidably in the vertical direction. The sliding lid 27 is biased upward by a coil spring 28 stretched between the lower portion and the cover 24, and the convex portion 19a of the lever 19 contacts the lower surface of the closing plate 27a. There is. Further, a rotating lid 30 biased counterclockwise by a spring 29 is pivotally attached to the upper end of each sliding lid 27,
Normally, as shown in FIG. 1, each window 26 is completely closed by the rotary lid 30 and the sliding lid 27.

Needless to say, the measuring mechanisms such as the case 13, the shutter 15 and the lever 19 described above are also installed in the number corresponding to the window 26. In that case, the capacity of each weighing chamber 16 is, for example, 1 go, 2
It is preferable to change it as in the case of 3 cases.

The operation of the weighing rice box will now be described. When not in use, the window 26 is closed by the rotating lid 30 and the sliding lid 27 as shown in FIG. 1, and the weighing chamber 16 is closed by the case 13 and the shutter 15. Therefore, a predetermined amount of rice 10 is stored in this measuring chamber 16. If you want to take out the rice 10, push the rotary lid 30 with your fingers to rotate it clockwise as shown in FIG. 2, and push down the rotary lid 30 and the sliding lid 27 as they are. Since the lever 19 rotates counterclockwise, the shutter 15 is pushed by the convex portion 19b of the lever 19 and rotates clockwise. As a result, the lid 15a of the shutter 15 closes the rice supply port 18, and the lower end of the shutter 15 separates from the case 13 to form the rice drop port 32.
A predetermined amount of rice 10 in the weighing chamber 16 drops from the rice drop port 32 onto a pull-out type ball 33 provided below. Even when the rice is taken out, the tilted rotary lid 30 closes the lid housing chamber 25, so that the outside is shut off from the inside of the container.

[Advantages of the Invention] As described above, according to the present invention, the operation window is closed when not in use, and the outside and the inside of the container are shut off even when the weighing object is taken out. The accumulation of dust and the invasion of dust into the vessel can be prevented, the inside of the vessel can be kept clean at all times, and the operation section does not need to be cleaned.

[Brief description of drawings]

FIG. 1 is a sectional view of a weighing machine showing an embodiment of the present invention, and FIG.
The figure is a cross-sectional view showing the condition when the weighing instrument is taken out.
FIG. 3 is a front view of a front plate portion of the measuring instrument, and FIGS. 4 and 5 are sectional views showing a conventional example. 13 …… Case, 15 …… Shutter, 16 …… Weighing room, 19…
… Lever, 23 …… Front plate, 25 …… Lid housing chamber, 26 …… Window, 27
…… Sliding lid, 30 …… Rotating lid.

Claims (1)

[Scope of utility model registration request] 1. A weighing instrument in which a weighing chamber having a predetermined volume is formed by a case and a shutter which opens and closes in conjunction with the rotation of a lever, and a lid accommodating chamber having an operation window is formed inside the front surface of the instrument body. Then, in the lid accommodating chamber, a sliding lid that is urged upward and abuts against the tip of the lever on the lower surface, and is rotatably attached to the upper end window side of the sliding lid and in the standing direction. A weighing instrument that accommodates a biased rotating lid and closes the window by the sliding lid and the rotating lid.