JPS58120126A - Platform scale - Google Patents

Abstract

PURPOSE:To facilitate the manufacture of the scale, by providing stress transmitting parts corresponding to weighing points on a rigid plate having a strain yielding body at its center, providing stress transmitting parts corresponding to supporting points at both sides of the back surfaces, thereby omitting the difference between a mounting plate and a supporting plate. CONSTITUTION:The strain yielding body 22 is attached to the central part of the rigid plate 21. Z blades 23 are attached to both ends of the rigid plate 21. The Z blades 23 are fixed under the state the central parts are contacted with the upper surface of the rigid plate 21. The upper and lower ends of each Z blade 23 form sharp edges 24 and 25 which are the stress transmitting parts. Common plates 30 have two inside stress transmitting parts 31 and two outside stress transmitting parts 32.

Description

[Detailed description of the invention] The present invention relates to a platform scale.

A conventional platform scale generally has the following configuration.

(B) [First example] Not shown.

This is a combination of a long machine and a short root, and a strain-generating body (load cell, etc.) is connected to the end of the long machine that serves as the first lever.

(b) [Second example] Not shown.

Two short roots are combined and a strain body is associated with the connection point (middle part).

H (Example 8) See Figure 1.

Set up legs (2) at the four corners of the board (1), and attach a board (3) to each
and a flexure element (4), and each flexure element (4) supports a loading plate (6) via a weighted iron (5).

) [Example 4] See Figure 2.

There are two loading plates (8) in the case (7). Loading plate +
81 U It is related to the strain body (lO) via the donkey mechanism (9). One strain regime is common to the two loading plates (8). This is a combination of two such cases (7).

The IIFI examples 1, 2, and 4 have many lever systems, are complex in structure, tend to be expensive, and have a high failure rate. In particular, the first example and the @g example are bulky and heavy, making them inconvenient to handle. Note that there is one strain body.

The third example has few levers and is simple and thin,
It is expensive because it uses four strain-generating bodies.

Furthermore, it is difficult to average the detected quantity of electricity, and there are problems in terms of accuracy.An example of a method previously proposed by the present applicant in an attempt to solve this problem is the one shown in FIG.

(1) The rigid plate (++) has an emphasis part (12) and a fulcrum part (1 turbidity) on both sides in the longitudinal direction, and a strain-generating body (+4
).

A pair of important points 02), (J'lJ and a pair of fulcrums *(+3).

It goes without saying that θ→ is in a symmetrical or almost symmetrical position with respect to the strain body (14), and that the point * (12) and the fulcrum part (field 1 are at different positions in the longitudinal direction of the rigid plate (n)). Of course.

[2] A loading plate (150) is installed between a pair of important points (12).

According to this prior example (FIG. 8), one strain-generating body is used for two key point/fulcrum part sets, and the donkey-pal mechanism? There is no lever system, and one rigid plate serves to connect the two pivot point/fulcrum parts to the strain body, resulting in a simple structure as a whole. The measurement accuracy is also sufficiently high.

The present invention regards the above-mentioned prior art as a prior art, and further improves this.

The problems to be solved by the present invention in the prior art (FIG. 8) are as follows.

The important part (12) is a sharp blade (16) and a blade holder (from 1 piece,
The fulcrum part (13) also usually consists of a sharp blade (18) and a blade receiver 09). Blade holder (19), (19)l
-1: Must be supported on a horizontal support surface. Therefore, it is better to use a support plate (-) that has blade holders (+9) and (19) at both ends. There is no direct relationship. The support plate (20) and the loading plate (1) are similar and have similar size and shape.

However, it was thought that the two should be manufactured as completely different products. In that case, the manufacturing equipment is 2
Seeds are required and equipment costs are high. In addition, there are problems caused by the fact that there are two types of manufacturing equipment.

The purpose of the present invention is to eliminate such problems. The measures taken by the present invention for this purpose, that is, the configurations related to the gist of the present invention, are as shown in the following sections CI) and (If). .

[I] A rigid plate with a strain-generating body in the center has a first stress transmitting part corresponding to a focal point on both sides of the surface, and a second stress transmitting part corresponding to a fulcrum part on both sides of the horse's surface. . Both the first two stress transmitting parts and the second two stress transmitting parts are symmetrical with respect to the strain body, and the positions of the first and second stress transmitting parts are different from each other.

(n) The loading plate and the support plate are the same (or nearly the same).

Each of them includes four stress transmitting parts: two stress transmitting parts corresponding to a pair of first stress transmitting parts and two stress transmitting parts corresponding to a pair of second stress transmitting parts.

The reason why the words "identical (or nearly identical)" are written in parentheses in Section C113 is based on the fact that, in reality, there is a very small possibility that two separate entities exist that are exactly the same. The idea is that the loading plate and the support plate should be manufactured by one machine or by a plurality of machines that are the same (or nearly the same).

The effects of the configurations D) and [II) are as follows.

There is no distinction between the loading plate and the support plate. Let's call this the "common board", which can be said to be both a loading board and a supporting board.

The common plate eliminates the need to distinguish between a loading plate and a support plate even when it is manufactured and assembled to a rigid plate as a platform scale.

(B) For the same reason, the difference between heaven and earth has disappeared.

That is, in use, which of the two common plates is used as a loading plate or which one is used as a support plate is arbitrary. The one at the top is called the loading plate, and the one at the bottom is called the support plate. The load stress experienced by the loading plate due to the load is the same as the reaction stress experienced by the support plate from the floor or ground. Therefore, even if the supporting plate, which had been at the lower level, is moved to the upper level and is used as a mounting plate, there is no difference in the effect that the strain-generating body senses before and after the inversion, as long as the voltage detection is the same.

In this sense too, there is no difference between heaven and earth.

Thus, the effects of the present invention can be described as follows.

(a) It is advantageous to manufacture the material as a common plate and to assemble it with a rigid plate. If carried out, it is advantageous in terms of equipment costs, installation space, etc., since only one manufacturing device is required.1 This is advantageous in mass production of so-called - variety or small number of products, and tends to increase costs. There is no need to distinguish between the loading plate and the support plate during assembly, and assembly can be performed quickly, easily, and without errors. (b) Easy to use. Regardless of when it is permanently installed, when using a portable type M' as a belt type, it can be used regardless of whether it is up or down. No mental effort is required to determine which is higher. (However, this does not preclude assembly or usage that intentionally distinguishes between top and bottom.) Next, the present invention will be explained in detail.

[First embodiment] See Figure 4.

Rigid plate C! υ has a strain body (22) attached to its center.

Two (Z) blades (c) are attached to both ends of the rigid plate (21). The middle part of the jet blade (23) is a rigid plate (
21) is fixed in contact with the upper surface of the device.

Both the upper and lower ends of the Z blade (c) are sharp blades (2ω, (to). The sharp blade (goods) is the first stress transmission part (
b), and the sharp blade (2) is the second stress transmitting part □□□.

The common board that is both a loading board and a support board is located on the inside 2.
It has two stress transmission parts Gil, (31J) and two stress transmission parts (32) and (321) on the outside.
The stress transmitting part (311, C41) on the inside of a) is idle.

[Second Embodiment] See Figure 5.

This corresponds to an inversion of the first embodiment.

Stress transmission part inside loading plate (support) +311, C(1
), the stress transmission part (sha) on the outside of the support plate (b), @ is idle. The middle part of the jet blade (c) is in contact with the lower surface of the rigid plate (21). The rest is the same as the first embodiment.

[Eighth embodiment] See FIG. 6.

Four V-shaped grooves are formed on the common plate (to), which is also the loading plate side and the support plate (g), and each one is used for stress transmission'n (311, (
31) (support) and C (2+). The whole is covered with a cover (38). The cord (to) from the flexure element (C) extends inward and outward through the cover (88).
The cover (83) has the role of maintaining the assembled state of the loading plate (total), the rigid plate Qυ, and the support plate in a predetermined relationship, and the role of protecting the strain-generating body @ etc. from moisture.

[Fourth embodiment] See Figure 7.

This is a modification of the rigid plate 21+.
In this state, the first and second stress transmitting parts (a) p@ are integrally connected.

[+45 Example] See Figure 8.

This is the inner stress transmission part #C11), +31+, and the outer stress transmission part Country (3), which are different in shape and protrusion direction.

[Brief explanation of drawings]

FIGS. 1 and 2 are perspective views showing conventional examples, respectively. FIG. 8 is a front view showing a prior example. 4 to 8 each show an embodiment of the present invention. FIG. 4, FIG. 5, and FIG. 8 are front views. FIG. 6 is a sectional view. FIG. 7 is a perspective view of the support plate. C1)...Rigid plate, (22)...Strain body, (A), @...Stress transmission part, Pleasure...
- Loading plate, (2)...Support plate, f31), (support)...Stress transmission part. Agent Patent Attorney Osamu Kita Figure 2 Figure 4 Figure M5 Figure 6

Claims (1)

[Claims] ■ A strain-generating body (2) in the center, and first stress transmitting parts (A)-(26) on each side of the surface symmetrically or almost symmetrically with respect to the strain-generating body c2, Rigidity having second stress transmitting parts eθ, @ symmetrically or almost symmetrically with respect to the strain-generating body (sha) at positions different from the first stress transmitting parts (a) and ((5) on both sides of the back surface, respectively) Plate (21), and stress transmitting portions at four positions, each corresponding to the pair of first stress transmitting portions (261, (a) and the pair of second stress transmitting portions @#(5)). +311・cll), (Foundation). A pair of identical or nearly identical loading plates (c) with (branches).
and a platform scale equipped with a support plate (a). (2) All of the four stress transmission parts (a), @, same, and @ of the rigid plate 21 are sharp blades, and the four stress transmission parts of each of the load plate (c) and the support plate (c) described above are full. The platform balance according to claim 0, wherein r3D1■ and @ are all blade rests.