JPH0140021Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for preventing the cover from coming off against impacts and extreme loads on platform scales, particularly flat platform scales such as weight scales.

That is, in a conventional weighing scale, which is a platform scale, the base 1 and cover 2 are set by pulling each other together only by the side springs 3, so that when a person stands on the edge of the cover 2 and measures the load, for example, the weight is measured. is loaded in an extremely biased manner, and as a result, the cover 2 rises against the side springs 3, and at the time the cover 2 rises, parts such as the long machine and the short machine of the scale mechanism in the base 1 are removed from the base 1. falling off,
It had the disadvantage that it no longer functioned as a scale and could be damaged.

In view of the above circumstances, this invention has been developed to
An extremely simple locking portion is provided on the side wall of the cover, and the purpose is to prevent the cover from floating up using the locking portion.

Examples will be described below with reference to the drawings.

FIG. 1 is a front view of the main parts, and FIG. 2 is a side sectional view of FIG. 1.

1 is the base and 2 is the cover that applies the load.

A conventional weighing mechanism such as a long machine and a short machine is installed inside the base 1, and the cover 2 is placed on this scale mechanism, and side springs 3 are attached to the base 1 from both ends of the cover 2. This is a weighing scale, which is a platform scale, with a cover 2 set on a base 1.

A part of the opposing wall 1a of the base 1 is cut and raised to provide a cut-and-raised piece 1b with one side l inclined.

4 is a flexible leaf spring. This plate spring 4 has a hole 4a at its tip, and is fixed inside the cover 2 so that the tip of the cut and raised piece 1b projects into the hole 4a.

Therefore, when an extremely biased load is applied and the cover 2 lifts up relative to the base 1, the cut-and-raised piece 1b is locked into the hole 4a of the leaf spring 4 provided in the cover 2, thereby restricting the lifting of the cover 2. Therefore, the side springs 3 are fully extended, and during that time, parts such as the long machine and the short machine will not come off the base 1 and cause any damage. It is also extremely robust against strong impacts.

Furthermore, when setting cover 2 to base 1,
By placing the cover 2 horizontally on the base 1 and pushing it vertically, the tip of the leaf spring 4 slides onto the inclined side l of the cut-and-raised piece 1b, and the cut-and-raised piece 1
As soon as b is positioned in the hole 4a of the leaf spring 4, it automatically protrudes and engages.

In addition, when removing it for maintenance etc., base 1
By pressing the leaf spring 4 through the cut-and-raised hole 4b, it can be easily removed, leading to improved production, which is extremely effective.

[Brief explanation of the drawing]

FIG. 1 is a front view of the main parts, and FIG. 2 is a side sectional view of FIG. 1. 1...Base, 1a...Side wall, 1b...Cut out piece, 2...Cover, 3...Side spring,
4...plate spring, 4a...hole.

Claims (1)

[Scope of utility model registration request] In a platform scale in which a cover 2 is placed on a scale mechanism built in a base 1 and the cover 2 is stretched on the base 1 by side springs 3, one side l is attached to the opposing side walls 1a of the base 1. A cut-and-raised piece 1b that is short on the opening side of the inclined side wall and long on the bottom side is provided, and a leaf spring 4 having a hole 4a is installed inside the cover 2 facing the cut-and-raised piece 1b,
A device for preventing a cover from coming off in a platform scale, characterized in that a tip of the cut and raised piece 1b protrudes and engages with the hole 4a.