JP2526767Y2 - Multi-chamber container bottom plate bonding structure - Google Patents

Description

[Detailed description of the invention]

[0101]

In the present invention, the body is divided into a plurality of chambers in the axial direction of the container by a partition plate, and each compartment is formed by a bottom plate adhered to the end surface of the body peripheral wall and the end surface of the partition wall. The present invention relates to a bonding structure between a trunk and a bottom plate in a separated and closed multi-chamber container.

[0092]

2. Description of the Related Art As a multi-chamber container of the above-mentioned type, for example, a cylindrical body is vertically divided into two chambers in a semicircular cross section by a single partition plate, or from a body axis. In some cases, there are three chambers that are divided by a radial partition plate that is divided into a range of 120 degrees, but in any case, unlike the case of a normal tube container, the trunk is crushed at the end of the trunk and the surrounding walls are joined together. It is difficult to form an end seal portion by bonding the two plates face-to-face, so that it is necessary to close the bottom plate by bonding a bottom plate to the lower end of the body.

An example of such a bonding structure between the body and the bottom plate is as follows.
This is shown in an application filed by the present applicant (Japanese Patent Application No. 2-283347). There, a structure is adopted in which the end surface of the body including the partition plate is brought into contact with the bottom plate surface, and the two are fused and bonded. In this case, the bottom plate is often pressed from the outer surface side with a hot plate.

It is also known that a groove or a step portion is formed in the bottom plate so that the peripheral wall of the body portion and the partition plate do not move laterally, and the bottom plate is adhered in a positioned state.

[0056]

However, the above prior art has the following problems. (1) The lengths of the body peripheral wall and the partition plate are strictly controlled, and it is necessary to adjust the body end so that each end surface of the peripheral wall and the partition plate abuts uniformly on the bottom plate surface.

(2) When pressure is applied from the back surface of the bottom plate with a hot plate or the like, pressure is not easily transmitted to the partition plate located at the center of the body, so that poor adhesion easily occurs between the end surface of the partition plate and the bottom plate surface. The isolation function of each room deteriorates.

(3) When a sealing method using a hot plate is used,
If high-pressure, short-time bonding is used, deflection occurs in the center of the partition plate, creating a gap between the end surface of the partition plate and the inner surface of the bottom plate. Work efficiency is reduced.

[0098]

In order to solve such a problem, according to the present invention, the end surface of the body peripheral wall is adhered to the inner surface of the bottom plate, and the end of the partition plate provided at the bottom plate is provided with a hole for penetration and insertion. The end face of the inserted and penetrated partition plate was bonded to the outer surface of the bottom plate.

More specifically, the inner surface of the bottom plate to which the end surface of the body peripheral wall adheres is the bottom surface of the peripheral wall end fitting groove provided on the peripheral edge of the bottom plate, and the outer surface of the bottom plate to which the end surface of the partition plate adheres. The surface is the end face of the protruding edge defining the hole.

In order to make the end face of the partition plate adhere to the outer surface of the bottom plate, the end of the partition plate passes through the hole when the end face of the peripheral wall of the trunk comes into contact with the inner surface of the bottom plate in the processing step. , May be slightly dimensioned so as to protrude slightly from the hole and expose the end face.

[0111]

According to the present invention, the end face of the peripheral wall of the body is adhered to the inner surface of the bottom plate, and the end of the partition plate projecting from the hole provided in the bottom plate is formed by the above structure. The part is closed and the container is made into a multi-chamber container with good sealing performance.

[0122]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Two embodiments will be described below.

Example 1 FIG. 1 shows a body 1 of a container of this example. The body 1 is provided with a partition plate 4 on the inner surface of a cylindrical peripheral wall 3, and left and right sides of the partition plate 4 are each formed with a semi-circular vertical section having a semicircular cross section.

The body 1 is made of low-density polyethylene, and the peripheral wall 3 and the partition plate 4 are integrally formed by ordinary extrusion molding or injection molding. Thus, the end 5 of the peripheral wall 3 and the end face 6 of the partition plate 4 are formed so as to be located on the same plane.
The partition plate 4 is made slightly thicker than the peripheral wall 3.

FIG. 2 shows the structure of the bottom plate 2, in which (1) is a perspective view and (2) is a sectional view taken along the line AA '.

The bottom plate 2 is made of a resin similar to the body portion 1, has a substantially disk shape, and has an inner surface (a side facing the inside of the container body) 7.
A U-shaped annular groove 9 for accommodating the end of the peripheral wall 3 of the body 1 is formed in the peripheral edge of the side, and the bottom surface 10 of the groove 9 is an annular flat portion and is in contact with and adheres to the peripheral wall end surface 5. It is.

Further, at the center of the bottom plate 2, the partition plate 4 is fitted, and a hole 11 through which the end thereof penetrates is opened in the radial direction, and a pair of edges defining the hole is formed at the edge. Protruding edge 1
2 slightly extends toward the outer surface 8 side. In addition,
The end surfaces 12 ′ of these edges are lower than the groove bottom surface 10, that is, located closer to the inner surface 7 than the bottom surface 10.

On the other hand, both ends of the hole portion 11 sandwiched between the edge portions 12 are connected to the inner wall cutout portion 15 in which the inner wall portion 13 corresponding to one wall of the groove 9 is cut to the same height as the bottom surface 10. . Furthermore, the inner wall portion 13 continues to a bottom plate 14 inclined toward the inner surface 7 toward the edge portion 12, and the end of the bottom plate 14 is connected to the protruding edge portion 12, while the end of the partition plate 4 The guide portion 16 is formed to extend toward the inner surface 7 so that the portion can easily fit into the hole portion 11.

FIG. 3 is a partially cutaway perspective view showing a state in which the bottom plate 2 is temporarily mounted on the body portion 1, and FIG. 4 is a longitudinal sectional view thereof.

When the bottom plate 2 is put on the body 1, the peripheral wall 3 of the body 1
Fits into the groove 9, the peripheral wall end surface 5 abuts against the bottom surface 10 of the groove,
At the same time, the end of the partition plate 4 fits into the hole 11, the tip of the partition plate 4 penetrates the hole, and the end face 6 is exposed more outward than the end face 12 ′ of the edge 12. Eventually, the entire body is suppressed by the groove and the hole, and the swing in the radial direction is prevented. Therefore, even if it is press-fitted from the outer surface side of the bottom plate 2 with a hot plate, the peripheral wall 3 and the partition plate 4
Does not fall laterally.

FIG. 5 is a longitudinal sectional view showing a state in which a hot plate is pressed from the outer surface side of the bottom plate 2 and the bottom plate 2 is adhered to the body 1, and the peripheral wall end surface 5 and the groove bottom surface 10 are adhered. The end face 6 of the plate 4 is expanded and pressure-bonded to the end face 12 ′ of the edge 12. Although both end portions of the partition plate 4 are fitted into the inner wall cutouts 15 (not shown), the partition plate 4 approaching this portion is not shown.
Are spread over the inner wall cutout 15 and adhere to the inner wall 13.

As described above, since the partition plate 4 penetrates the bottom plate 2 and is bonded, not only is the end face of the partition plate 4 and the bottom plate 2 firmly bonded, but also the shape and size of the end portion of the partition plate 4 The accuracy may be rough to some extent, and it is not necessary to perform the bonding step at high pressure.

Example 2 This example is a case of a container having a three-chamber structure, and FIG. 6 shows the structure of the body 1.

120 ° from three inner surfaces of the cylindrical peripheral wall 3
At an interval, three partition plates 4 extend toward the axis and are connected by the axis, thereby dividing the body into three in the vertical direction. Reference numerals 5 and 6 denote end faces of the peripheral wall 3 and the partition plate 4, respectively, as in the first embodiment.

FIGS. 7 (1) and 7 (2) are a perspective view and a sectional view taken along the line BB 'of the bottom plate 2 in this embodiment, respectively. The difference from the bottom plate 2 of the first embodiment is that the center of the bottom plate 14 is different. The hole 11 is formed so as to extend radially and equiangularly in three directions corresponding to the partition plate, and the bottom plate 14 is formed flat.

The end surface 12 ′ of the protruding edge portion 12 is located on the inner side with respect to the partition plate end surface 6 when the partition plate 4 of the body 1 is fitted into the hole 11, and is located at three places on the inner wall portion 13. The formation of the inner wall cutout 15 following the hole 11 conforms to the first embodiment, and the other configuration is the same as that of the first embodiment.

FIG. 8 is a partially cutaway perspective view showing a state in which the bottom plate 2 is temporarily mounted on the body portion 1. As in the case of the first embodiment, the end of the peripheral wall 3 is fitted into the groove 9, and the partition plate is formed. The end portion 4 penetrates the hole 11, and the end surface 6 is exposed above the end surface 12 ′ of the edge portion 12.

FIG. 9 shows the temporarily mounted bottom plate on the outer surface 8 thereof.
FIG. 4 is a perspective view showing a state in which the partition plate is pressed from the side with a hot plate and adhered to the body portion 1, and a partition plate end surface 6 extending in three directions from the center of the bottom plate 2.
Are spread and adhered so as to cover the edge 12.

The situation where the partition plate end face 6 near the inner wall cutout 15 is adhered to the inner wall 13 around the inner wall cutout 15 and the situation where the peripheral wall end face 5 is bonded to the groove bottom surface 10 of the bottom plate 2 are also shown in FIG.
Is the same as

[0302]

[Effects of the Invention] The present invention has the following effects because it is configured as described above.

(1) Since the end of the partition plate protrudes outward from the hole of the bottom plate and is thermocompression-bonded so as to expand the protruded portion, even if the size of the protruding end face of the partition plate varies. No real harm occurs. Accordingly, since there is no problem even if the length of the partition plate with respect to the peripheral wall or a step between the respective portions of the partition plate is not hindered, the work of cutting the trunk to a predetermined size is easy.

(2) Since the partition plate and the bottom plate are stably and firmly adhered to each other, the isolation performance of each chamber is good, and the contents do not mix even when the bottom plate is set up and stored.

(3) Since the protruding end face of the partition plate that directly touches the hot plate is melted and bonded to the bottom plate, the partition plate can be melt-bonded in a short time without pressing under high pressure, and has good heat efficiency and pressure efficiency. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a container body in a first embodiment of the present invention.

FIG. 2 shows the same bottom plate, (1) is a perspective view thereof,
(2) is a sectional view taken along the line AA 'of (1).

FIG. 3 is a partially cutaway perspective view showing a state in which a bottom plate is temporarily attached to a body portion.

FIG. 4 is a longitudinal sectional view of the same.

FIG. 5 is a longitudinal sectional view showing a container completed by bonding a bottom plate to a body.

FIG. 6 is a partially cutaway perspective view showing a container body in the second embodiment of the present invention.

FIG. 7 also shows a bottom plate, (1) is a perspective view thereof,
(2) is a sectional view taken along the line BB 'of (1).

FIG. 8 is a partially cutaway perspective view showing a state in which a bottom plate is temporarily mounted on a body.

FIG. 9 is a partially cutaway perspective view showing a container completed by bonding a bottom plate to a body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Bottom plate 3 Body peripheral wall 4 Partition plate 5 Peripheral wall end surface 6 Partition plate end surface 7 Inner surface 8 Outer surface 9 Groove 10 Bottom of groove 9 11 Hole 12 Protruding edge 12 'End of protruding edge 12

Claims (3)

(57) [Scope of request for utility model registration] 1. The body 1 is divided into a plurality of chambers in the container axial direction by a partition plate 4, and the body peripheral wall 3 and each end face 5 of the partition plate 4,
In the bonding structure of the bottom plate of the multi-chamber container in which the bottom plate 2 is adhered to the chamber 6 and the chambers are separated and closed, the end surface 5 of the body peripheral wall is
The end of the partition plate 4 penetrates a hole 11 provided in the bottom plate, and the end surface 6 of the partition plate 4 is attached to the outer surface 8 of the bottom plate.
And a bottom plate bonding structure for a multi-chamber container. 2. An end face 5 of the body peripheral wall is bonded to a bottom surface 10 of a groove 9 for fitting the end of the peripheral wall provided on a peripheral edge of the bottom plate, and an end surface 6 of the partition plate defines a hole 11 of the bottom plate. The bottom plate bonding structure for a multi-chamber container according to claim 1, wherein the bottom plate is bonded to an end surface 12 'of the protruding edge portion 12. 3. A projecting edge 12 defining a hole 11 in the bottom plate.
The bottom plate adhesive structure for a multi-compartment container according to claim 1 or 2, wherein the end face 12 'of the multi-compartment container is located inward of the trunk portion with respect to the end face 6 of the partition plate.