JPH031776Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to a case for a balance.

(b) Conventional technology There are various structures for balance cases in the past, but those with high rigidity and excellent performance are expensive and heavy, making them inconvenient to handle. Those that measure this have problems in terms of rigidity and airtightness, and have the disadvantage of inferior performance.

(C) Purpose The purpose of the present invention is to obtain a balance case that is simple in structure and easy to assemble, and has excellent rigidity and airtightness, and is also low in cost and has high performance. .

(d) The balance case of the present invention is: (A) a base having a groove or protrusion on its top surface for abutting and positioning one end of (C) below;

(B) A top plate with a groove or protrusion on the bottom surface for abutting and positioning the other end of (C) below.

(C) It has a cross-sectional shape in which both ears of the approximately U-shape are further bent inward at least once, and the above-mentioned
Intermediate case placed between (A) and (B) so that both ends abut.

(D) has a substantially U-shaped cross-sectional shape, the dimension between the inner surfaces of both ears is larger by a predetermined dimension than the dimension between the outer surfaces of both ears of (C) above, and the above (C) are housed in facing directions;
A cover arranged to accommodate a glass door in the space formed between the ears.

(E) A screw that fastens the above (A) and (B) with the above (C) sandwiched between them.

between (A) and (B) above, and (C),
It is characterized by a structure in which a weighing chamber is provided in the part excluding the space formed by (D).

(e) Examples Examples of the present invention will be described below based on the drawings.

FIG. 1 is a side view of an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA, and FIG. 3 is an exploded perspective view of the main parts thereof.

The lower case 1 serves as the base of the balance, and also
It also serves as a case that houses the display device 1a. A groove 1c for fitting the lower end of the intermediate case 2, a guide groove 1d for guiding the glass door 4, and four screw holes 1e are formed on the upper surface of the lower case 1.

The intermediate case 2 has two approximately U-shaped both ear parts.
It has a cross-sectional shape bent at 90 degrees, and its lower end is fitted into the groove 1b of the lower case 1, and the top plate 5 is placed on its upper end. A groove (not shown) into which the upper end of the intermediate case 2 is fitted is formed on the lower surface of the top plate 5, and four through holes 5a are formed at positions opposite to the screw holes 1e of the lower case 1. .

The lower case 1 and the top plate 5 are connected to the screw hole 1e and the through hole 5 by four sets of threaded rods 6 and nuts 7, with the intermediate case 2 fitted into the respective grooves.
It is fastened at part a. Thereby, the lower case 1, the intermediate case 2, and the top plate 5 are integrated.

The cover 3 has a substantially U-shaped cross-sectional shape, and its lower end is fitted into the groove 1c of the lower case 1 to house the intermediate case 2 inside as shown in FIG.
is fixed to the intermediate case 2 by. As a result, the connecting portion between the lower case 1 and the top plate 5 has a box-like shell structure.

A balance mechanism is placed above the top plate 5, and an upper case 9 is placed over it. Two front pillars 10 are disposed between the top plate 5 and the lower case 1 at a portion of the top plate 5 that projects forward from the intermediate case 2. A glass door 4 is slidably provided between the front pillar 10 and the intermediate case 2 to form a weighing chamber. This weighing chamber is provided with a weighing pan 11 suspended from a balance mechanism.

In addition, the dimension between the inner surfaces of both ears of the cover 3 is larger than the dimension between the outer surfaces of the intermediate case 2 and both ears by a predetermined dimension,
The glass door 4 can be stored in the space formed by the inner and outer surfaces of the left and right ear parts. Furthermore, the fourth
The figure shows a sectional view taken along line BB in FIG. Further, a printed circuit board and the like are stored in the space formed by the intermediate case 2 and the cover 3.

In order to assemble the above embodiment of the present invention, after fitting the intermediate case 2 into the groove 1b of the lower case 1 and screwing the threaded rods 6 into the screw holes 1e, the top plate 5 is inserted into the intermediate case while fitting the front pillar 10. Place it on case 2 and tighten nut 7. Thereafter, after inserting and attaching the glass door 4, printed circuit board, etc. from the rear, the cover 3 may be fitted into the groove 1c from the rear and fixed to the intermediate case 2 with screws 8.

Although the above embodiments of the present invention have been explained by taking a lower pan balance as an example, it is of course applicable to an upper pan balance having a weighing chamber. In this case, the upper case 9 becomes unnecessary, a slide glass is provided on the top plate 5, and the balance mechanism is housed in the lower case 1.

Further, the cross-sectional shape of the intermediate case 2 may be such that both ear portions are bent once at 90 degrees, as shown in the cross-sectional view in FIG. Furthermore, it goes without saying that the grooves provided in the lower case 1 and the top plate 5 for positioning the intermediate case 2 may be replaced with protrusions.

(f) Effects As explained above, according to the present invention, the top plate and the lower case are supported by a box-shaped shell structure consisting of the intermediate case and the cover, so the conventional support using four pillars is not possible. This method has higher rigidity than the method of supporting the balance by installing panels on the front and rear of the balance.
Moreover, it can be made lightweight. Furthermore, since one end of the glass door can be accommodated within the space formed by the intermediate case and the left and right ears of the cover, it is difficult for outside air to enter the weighing chamber, resulting in high airtightness.

Both the intermediate case and the cover need only be formed by bending plate materials to predetermined dimensions, and are extremely easy to assemble, resulting in high work efficiency and cost reduction.

[Brief explanation of drawings]

Fig. 1 is a side view of the embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A, Fig. 3 is an exploded perspective view of the main parts, Fig. 4 is a sectional view taken along line B-B, and Fig. 5 is a cross-sectional view taken along line A-A. FIG. 7 is a sectional view of an intermediate case of another embodiment of the invention; 1...Lower case, 1b, 1c, 1d...Groove, 2
...Middle case, 3...Cover, 4...Glass door, 5...Top plate, 6...Threaded rod, 9...Top cover, 11...Weighing plate.

Claims (1)

[Scope of claims for utility model registration] It has the following (A), (B), (C), (D), and (E), and the following (A),
A balance case characterized by having a weighing chamber located between (B) and excluding the space formed by (C) and (D) below. (A) A base that has a groove or protrusion on its top surface for abutting and positioning one end of (C) below. (B) A top plate with a groove or protrusion on the bottom surface for abutting and positioning the other end of (C) below. (C) It has a cross-sectional shape of a substantially U-shaped shape with both ears further bent inward at least once, and has the above-mentioned shape.
Intermediate case placed between (A) and (B) so that both ends abut. (D) has a substantially U-shaped cross-sectional shape, the dimension between the inner surfaces of both ears is larger by a predetermined dimension than the dimension between the outer surfaces of both ears of (C) above, and the above (C) are housed in facing directions,
A cover arranged to accommodate a glass door in the space formed between the ears. (E) A screw that fastens the above (A) and (B) with the above (C) sandwiched between them.