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Electronic balance

A technology of electronic scales and weighing pans, applied in the field of electronic scales, can solve problems such as measurement errors and achieve the effect of reducing size

Inactive Publication Date: 2003-03-12
SHIMADZU SEISAKUSHO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The object of the present invention is to provide an electronic balance that can solve the problem of measurement error caused by the stress-strain of its connecting parts, and when the object to be measured is placed in an offset manner, the balance of the electronic scale will not be disturbed. Dimensions extend in longitudinal direction

Method used

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Embodiment Construction

[0021] Referring now to the embodiments shown in the drawings, the invention will be described as follows.

[0022] 1 and 2 show the mechanism body 1 of the electronic balance of the present invention. As shown in FIG. 2, on the mechanism body 1, protruding portions 1a, 1b having relatively wide widths are formed. The mechanism body 1 and the base frame 2 are fixed together. The movable part 10 and the receiving rod 11 are also fixed to each other by the protruding parts 1a, 1b. On the protruding parts 1a, 1b, there are cut-out threaded parts 14 for screwing in screws for connection. Fig. 1 is a perspective view showing a state in which a screw is screwed in.

[0023] By means of the protruding portions 1a, 1b, the distance from the cut-out threaded portion 14 to the Roberval parts 4, 5 can be made sufficiently long without extending the dimension of the electronic balance in the longitudinal direction. (Hereafter, the longitudinal direction is defined as the direction fro...

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Abstract

Protruding part of a mechanism body is connected to a base frame by screws, and other protruding part is connected to an auxiliary connecting metal fittings by the screws. A machining necessary for connecting is conducted on the protruding portions, the widths of which are wide. Therefore, a sufficiently long distance can be obtained by the protruding portions. As a result, the Roberval's parts are not affected by stress strain, which is caused in the process of connecting, even if a size of an electronic balance in a longitudinal direction is not extended. Accordingly, it is possible to realize the compact electronic balance of high performance in which an accurate measurement can be made even if a load is given to a balance pan being biased.

Description

technical field [0001] The invention relates to an electronic scale for measuring the weight of objects. The electronic scale includes a Roberval mechanism for maintaining the weighing pan in a horizontal position, and a lever mechanism as a lever for transmitting the displacement of the weighing pan's height to a load cell, by hollowing out the base material of the electronic scale, the above The two mechanisms can be integrally integrated. Background technique [0002] Japanese Patent No. 1905686 discloses an example of a prior art electronic scale. In the prior art, an aluminum alloy body such as a parallelepiped is hollowed out from the side, and the aluminum alloy body is made into a predetermined shape. In this way, the mechanism body of the electronic balance including the detection part is an integral structure, wherein the hollowed out aluminum alloy body and the elastic parts integrally form a body. Figure 5 and Figure 6 represents this ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G21/16G01G3/14G01G7/02
CPCG01G3/1412
Inventor 饭塚淳史
Owner SHIMADZU SEISAKUSHO CO LTD