JPS63205524A - Platform scale - Google Patents

Abstract

PURPOSE:To reduce the thickness of a platform scale and to decrease the number of components by forming a load transmitting means of two load transmission plates in an isosceles triangle shape, and installing detection parts at respective end parts sandwiched between equilateral sides of the load transmission plates. CONSTITUTION:A load transmitting means which transmits the load on a measurement table to a detection part 12 is formed of the two load transmission plates 13 and 14 in the isosceles triangle shape and the weight is measured from displacement proportional to the load at the detection part 12. Those transmission plates 13 and 14 have enough strength to withstand the load on the measurement table even when the thickness is made thin, so the thickness of the platform scale can be reduced. Further, the platform scale is formed of the two transmission plates, so the number of components can be decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a weighing scale, etc., which transmits the load of a measuring table to a detecting section using a load transmitting means, and measures the weight by a displacement proportional to the load at the detecting section. This is about a platform scale.

BACKGROUND OF THE INVENTION Conventional platform scales, for example weight scales, have a load transmitting means for transmitting the load of the measuring platform 1 to the detecting section 2 in a cross shape with four arms 3, as shown in FIGS. 5 and 6. , one end 3a of each of the four arms 3 is installed on a lower blade 5 arranged near a square of the mounting table (bottom surface) 4, and the four arms 3 are
The other end of each arm -3b is installed in the detection unit 2, the upper blade 5° is installed at the other end of each of the four arms 3, and the measuring table 1 is placed on each upper blade 5°. The load of the measuring table 1 is concentrated at one point by the four arms 3 serving as load transmitting means and transmitted to the detecting section 2, with a displacement proportional to the load at the detecting section 2. It is configured to measure body weight.

Problems to be Solved by the Invention In the scale configured as described above, in order to give the four arms 3 enough strength to withstand the load of the measuring table 1, the four arms 3 are The thickness of arm 3 must be increased,
Therefore, it is not possible to reduce the thickness of the weight scale, and since it is formed by four arms 3, the number of parts is large, resulting in high cost and the disadvantage that it takes time to assemble.

The present invention eliminates the above-mentioned drawbacks, and its purpose is to make the load transmission plate thin and have sufficient strength to withstand the load of the measuring stand, so that the thickness of the stand scale can be reduced. It is an object of the present invention to provide a platform scale that can reduce the number of parts because it is formed by two load transmitting plates, reduce costs, and can be easily assembled.

Means for Solving the Problems The present invention detects the load of the measuring table 11 using a load transmitting means.
2, and measures the weight by a displacement proportional to the load at the detecting section 12, the load transmitting means is connected to two isosceles triangular load transmitting plates I8. Formed at +4,
The configuration is such that the ends 18c+14c of the two load transfer plates 1 (, 14) sandwiched by their respective equal sides are installed in the detection section 12.

The load of the action measuring table 11 is transmitted to the detection section 12 via two isosceles triangular load transmission plates 13 and 14.
The weight is measured by the displacement proportional to the load at the scale, making the platform scale thinner and reducing the number of parts.

EXAMPLE Below, a case in which an embodiment of the platform scale of the present invention is applied to a scale will be explained with reference to FIGS. (formed by pasting a strain gauge on the plate) 12 is formed by two isosceles triangular load transfer plates IL.
A fulcrum receiver I Ra * at the end formed by I4 and sandwiched between one equal side and the other side of each load transmission plate 1114
13b+ 14a and 14b are installed on the lower blades 16a1116b and 17a@17b, which are placed in traps so that the height of the blades is the same near the square of the mounting table (placement plate) 15, respectively, and the respective loads are transmitted. The end portion 13 (+14 C) sandwiched between the equal sides of the plates 13 and 14 is installed in the detection section 12, and the end portion 13 (+14 C) is sandwiched between one equal side and the other side of the respective load transmission plates 13 and 14. Emphasis receivers 13d, 13e, 14 at the ends
d・14e so that the height of the blade is the same as that of the upper blade 18a-
18b, 19a@19b are adjusted and installed, and the measuring table 11 is placed on each of the upper blades 18a@18b+19a and 19b, and the space formed by the measuring table 11 and the mounting table I5 is An element such as a microcomputer (not shown) that converts the displacement proportional to the load applied to the detection unit 12 into a measured value, and an LED that displays the measured value by the element.
A printed circuit board 21 on which a display section 20 and the like are arranged. It is constructed by installing a 006P battery box 22 and the like that serve as a power source for these devices.

In addition, in the above configuration, the lower blade 16H'16b+17a
・17 b s upper blade 18a1118bt 19a*
19b and the detection unit 12 are arranged horizontally,
Further, the measuring table 11 and the mounting table 15 are connected to each other by screws 24 and washers 25, as shown in FIG.
5 and the lower blade 16a from each load transfer plate 13.14.
lI16b, 17a17b and upper blade 18a/18b, 1
The measuring table 11 is mounted so as to be able to move freely in the vertical and horizontal directions with a gap A that is large enough to prevent the parts 9a and 19b from coming off.

Next, the operation of the weighing scale constructed as described above will be explained.

Now, when a load is applied to the measuring table 11, the load applies four downward forces to the two load transmission plates 18, 14 via the four upper blades 18a-18b, 19a and 19b, and each of these The downward forces are applied to the detection unit 12 as four downward forces via the respective load transmission plates 18.14, and the magnitudes of the downward forces are the upper blades 18a11+8b, 19a@1
It is calculated by the distance from the cutting edge of 9b, and since the distances are equal, the magnitude of the force is multiplied by a certain ratio, and since this force gathers in one place and becomes one force, it is applied to the detection section 12 in proportion to the load. The detected displacement is detected by the detection section 12, the displacement is processed by the microcomputer on the printed circuit board 21, and the measured value is displayed on the λ segment) LED display section 20.

In the above embodiments, the case where the present invention is applied to a weight scale has been described, but it can also be implemented to a platform scale for measuring the weight of objects, and the present invention is not particularly limited to the above embodiments.

Effects of the Invention Since the platform scale of the present invention has the above-described configuration, the load transmission plate can be made thin and has sufficient strength to withstand the load of the measuring platform, so the platform scale can be made thinner, and two pieces can be used. Since it is formed from a load transmitting plate, the number of parts can be reduced, costs can be reduced, and assembly can be performed easily and easily.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of the main parts of an embodiment of the platform scale of the present invention, FIG. 2 is a schematic front view of the main parts of FIG. 1, and FIG. 3 is a schematic side view of the main parts of FIG. 1. , FIG. 4 is an enlarged sectional configuration diagram of the main part of FIG. 1, FIG. 5 is a schematic plan view of the main part showing an example of a conventional platform scale, and FIG. 6 is a schematic side view of the main part of FIG. 5. It is. In the drawing, 11 is a measuring table, 12 is a detection section, ICl3 is a load transmission plate, and L8c and 14c are ends. Agent Patent attorney Takeshi Sugiyama (and 1 other person) Figure 1 Figure 3

Claims (1)

[Claims] 1. In a platform scale that transmits the load of the measuring platform to a detection part using a load transmission means and measures the weight by a displacement proportional to the load at the detection part, the load transmission means is connected to two isosceles triangular shapes. A platform scale characterized in that it is formed of a load transmission plate, and the end portions of the two load transmission plates held between equilateral sides are installed in the detection section.