JP3059384B2 - Combined structure of plate member and molding member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining structure of a plate member constituting a box and a molding member fitted on the upper end surface of the plate member for reinforcement and decoration.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIG. FIG.
Is a box B disclosed in JP-A-6-143222.
It is a perspective view of. The box B is formed by appropriately combining a plate member A made of polypropylene plastic cardboard so as to be freely foldable, and has a structure in which a molding member C is fitted on the upper end surface of the plate member A. Further, a corner member D is attached to a corner portion of the box B as a countermeasure for preventing displacement when the same type of boxes B are stacked. The corner member D has two pieces of clamp plates E vertically downwardly provided, the clamp plate E is straddled over the outside of the molding member C, and the clamp member E is further penetrated through the molding member C. Driving a metal stud F into the molding member C
It is designed to be united with the unit.

[0003]

Since the conventional molding member C and the plate member A are integrally connected by a metal stud F, it takes a long time to drive the stud F, and the work cost and parts There was a problem that the cost was high. Furthermore, when the entire box B is made of a synthetic resin, a metal stud F
If used, it becomes an impurity as it is, so that there is a problem that the recycling efficiency is deteriorated.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and comprises two molding members each having at least two side plates protruding from both sides of a back plate so as to face each other.
A coupling structure that is fitted to and coupled to an end face of a plastic cardboard plate member composed of the substrate , wherein the plate member
Into the cutting line, leaving one of the substrates
Using the remaining substrate as a hinge part, form a folded part,
On the other hand, the molding member has an inward claw at the lower end of one side plate.
In the state of being fitted to the end surface of the plate member,
Both corners of the top end on the side of the flange are restrained by the inner corners of the back plate and both side plates
And the claw piece is engaged with the corner of the tip of the folded portion.
A combined structure of a plate member and a molding member is provided.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a longitudinal sectional side view showing a main part, FIG. 2 is an exploded cross-sectional perspective view showing a main part, FIG. 3 is a perspective view of a box, FIG. FIGS. 5A and 5B are cross-sectional plan views showing another connection structure of the molding member and the plate member.

As shown in FIG. 3, the box B is formed by combining a plate member 1 made of polypropylene plastic cardboard so as to be freely foldable, and the upper end surface 1u of the plate member 1 is reinforced and decorated. For this reason, the molding member 2 is fitted. In addition, corner members 3 are attached to all corners of the box B as a countermeasure against misalignment when boxes B of the same type are stacked in multiple stages.

The molding member 2 is made of a synthetic resin,
Two side plates 2b facing each other on both sides of the back plate 2a,
The back plate 2a covers the upper end surface 1u of the plate member 1, and the side plates 2b, 2b sandwich both side surfaces of the plate member 1. The molding member 2 is provided on the market as a continuously-formed long product, and the long product is cut in accordance with the size of the box B, and both ends are cut at an angle of about 45 degrees (FIG. 5 (a)). The part where the 45-degree end faces abut each other corresponds to the corner part of the box B. Thus, circular engaging holes 4, 4 are formed in both side plates 2 b, 2 b of the molding member 2 at positions near the corners of the box B. Both engagement holes 4, 4 are arranged on the same axis,
Drilling can be performed simultaneously in one step. Of course, the positions of the engagement holes 4 and 4 may be shifted, but the perforation process is slightly complicated.

On the other hand, the corner member 3 is an integrally molded product of a synthetic resin, and has an L-shaped horizontal plate 3a corresponding to the corner portion of the box B, and is vertically suspended from both side edges of the horizontal plate 3a. It comprises two pieces of clamp plates 3b, 3b, and an enclosing frame 3c projecting upward from the outer edge of the horizontal plate 3a. The two clamp plates 3b, 3b have an interval and a height straddling the outside of the molding member 2, and are formed by projecting projections 5 each having a cylindrical shape on both inner wall surfaces 3d, 3d. . The projection 5 has a shape such that a basic column is fitted into the engagement hole 4 of the molding member 2, and the opening 3e of the clamp plate 3b is formed.
The surface facing the side, that is, in FIGS. 1 and 2, the lower surface half circumference forms a tapered portion 5P.

Next, a method of connecting the molding member 2 and the corner member 3 will be described. First, as shown in FIG. 2, the corner member 3 is fitted on the molding member 2 fitted on the upper end surface of the opening of the box B, and the corner member 3 is forcibly pushed. Then,
The tapered portions 5P of the both protrusions 5 hit both corners of the molding member 2, and the clamp plate 3b expands along the inclination of the tapered portions 5P. When the projection 5 rides on the side plate 2b of the molding member 2 and reaches the engagement hole 4, the projection 5 is engaged with the engagement hole 4 by the elasticity of the clamp plate 3b. The projection 5 is firmly connected to the engagement hole 4 because the upper half peripheral surface is in a semi-cylindrical shape, so that the corner member 3 cannot be pulled out.

The following technical ideas can be extracted from the above embodiment. That is, `` a molding member which is a form in which two side plates are protruded at least to face both side edges of the back plate and which is fitted to an end surface of a plate member constituting a box,
A coupling structure with a corner member having two pieces of clamp plates attached to a corner portion of a box and straddling the outside of the molding member, wherein the molding member is engaged with an overlapping portion of the both side plates with the corner member. Forming a pair of protrusions on the inner wall surface of the two-piece clamp plate and forming a tapered portion on a surface of the protrusion toward the opening side of the clamp plate; The protrusions of the clamp plate are respectively engaged with both of the engagement holes of (1) and (2). "A joint structure of a molding member and a corner member in a box, wherein both engagement holes of the molding member are arranged on the same axis."

[0011] In the joining structure of the molding member and the corner member, since the engaging hole of the molding member and the projection of the corner member are engaged with each other, the corner member can be easily inserted into the molding member by a simple operation. It can be mounted, greatly shortening the working time compared to the conventional tacking method, and consequently greatly reducing the working cost and the component cost. In addition, since the engaging hole is formed on the molding member side, a commercially available molding member provided as a long object can be easily processed using a punching machine, so that there is further superiority in cost, In addition, since the engaging hole is hidden by the corner member, the external appearance is clear and cleaning is easy. In addition, since the joints between the engagement holes and the projections are formed on both the front and back surfaces of the molding member and the corner member, they do not come off in any direction. Furthermore, since the entire box can be made of synthetic resin, it has effects such as easy recycling and extremely useful as an environmental protection measure. Also, if the two engaging holes of the molding member are arranged on the same axis,
Since drilling can be performed in one step, there is an effect that workability is improved.

Thus, the molding member 2 and the plate member 1 are formed as follows.
Join by such means. First, as shown in FIG. 4, the space between the side plates 2b, 2b of the molding member 2 is increased to a thickness corresponding to two plate members, and an inward claw piece 2c is formed at the lower end of one side plate 2b. Then, a cutting line 1c is formed above the plate member 1 at a depth from the substrate 1a side to immediately before the substrate 1b of the two substrates 1a and 1b constituting the plastic cardboard, and the remaining one substrate 1b is removed. It is folded outward as a hinge portion, and the claw piece 2c is engaged with the lower edge (corresponding to the upper end surface 1u of the plate member 1) of the folded portion. By doing so, the molding member 2 and the plate member 1 are firmly joined over the entire area in the length direction. Therefore, even if one side of the upper opening is long in the large box B, the molding member 2 warps. Do not come off.

Alternatively, as shown in FIGS. 5 (a) and 5 (b), there is a joining method in which the molding member 2 and the plate member 1 are heat-welded at abutting portions of corners. That is, FIG.
Then, the both end surfaces of the two molding members 2 and 2 are cut obliquely, the plate member 1 is fitted into each molding member 2, and the edge 1e of the plate member 1 projects from the end surface of the molding member 2. Then, when the end face of the molding member 2 and the edge 1e of the plate member 1 are heated and melted and the two molding members 2 and 2 abut against each other in the molten state, the molding members 2 and 2 are of course,
The edge 1e of the melted plate member 1 is also integrated with the molding members 2 and 2, and as a result, the molding member 2 and the plate member 1 are firmly joined.

[0014]

As described above, according to the joint structure of the molding member and the plate member of the present invention, the claw piece of the molding member is engaged with the lower edge of the folded portion of the plate member. Compared with the method, it greatly reduces the working time, and thus greatly contributes to the reduction of working costs and parts costs. In addition, since the molding member and the plate member are firmly joined over the entire area in the length direction, even if the side of the upper opening is long in a large box, the molding member does not warp or come off. There is.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing a main part.

FIG. 2 is an exploded sectional perspective view showing a main part.

FIG. 3 is a perspective view of a box.

FIG. 4 is a longitudinal sectional side view showing a coupling structure between a molding member and a plate member.

FIGS. 5A and 5B are cross-sectional plan views showing another connection structure of the molding member and the plate member.

FIG. 6 is a perspective view of a conventional box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Plate member 1a ... Substrate 1b ... Substrate 1c ... Scission line 2 ... Mold member 2a ... Back plate 2b ... Side plate 2c ... Nail piece

Claims (1)

(57) [Claims] 1. A mall member in a form projecting from the side plate of the at least back plate two pieces to form opposed to both side edges of a two
A joining structure that is fitted to and joined to an end surface of a plastic cardboard plate member composed of a plurality of substrates , wherein the plate member has a score line excluding one of the substrates.
And use the remaining substrate as a hinge to form a folded part.
Form, while molding member, the claw piece inward in one of the side plates lower
Formed and fitted to the end surface of the plate member,
Both corners of the top end on the hinge side are bound by the inner corners of the back plate and both side plates.
Bundling and engaging the claw piece with the corner of the tip of the folded portion
Coupling structure of the plate member and the molding member, characterized in that the the like.