JPH049304Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to an improvement of a packaging box for packaging products.

(Prior Art) Conventionally, in order to make the packaging box made of corrugated paper or the like easier to carry, openings for handles have been formed in the side walls of the packaging box. However, when the side wall plate is provided with an opening for a handle, there is a problem in that dust and the like enter the interior through the opening and contaminate the product.

In order to prevent the intrusion of the above-mentioned dust, etc.,
As shown in Japanese Patent No. 59-51716, a stretchable sheet material is attached to the inner surface of the side wall plate of a packaging box to cover the opening. However, the above-mentioned sheet materials must be manually attached one by one to the inner surface of the side wall, which is a complicated process, and this poses a problem in that the manufacturing cost of the packaging box increases.

(Purpose of the invention) The present invention was made to solve the above-mentioned problems, and even though the opening for the handle is formed in the side wall plate, it is possible to prevent dust etc. from entering the inside.
Moreover, the object is to obtain a packaging box that can be manufactured at low cost.

(Structure of the invention) The present invention provides a packaging box that includes an outer box body in which a handle opening is formed in a side wall plate, and an interior member inserted into the outer box body. It has approximately the same length as the side wall plate and is composed of a flat plate part that is overlapped on the inner surface of the side wall plate, and a pair of cylindrical bent parts formed inside the left and right sides of this flat plate part. , the cylindrical bent portion is connected to an outer side plate connected to a side portion of the flat plate portion, and an inner side plate connected to the outer side plate and arranged to face the inner surface of the flat plate portion. a face plate, an inner side plate connected to the inner side plate and formed in a size corresponding to the side plate; an inner side plate connected to the inner side plate and formed in a size corresponding to the inner side plate; and a notch corresponding to the handle opening of the side wall plate is formed in the outer plate of the flat plate part and the cylindrical bent part.

According to the above configuration, the handle opening formed in the side wall plate is covered by the cylindrical bent part of the interior member, and dust that enters through the opening and the notch formed corresponding to the opening is covered by the cylindrical bent part of the interior member. etc. are blocked by the inner wall of the cylindrical bent portion and are prevented from entering the interior any further.

(Embodiment) FIG. 1 shows an embodiment of a packaging box 1 made of corrugated paper or the like.
and a pair of interior members 3, 3 inserted into the box body 2. A pair of opposing side wall plates 4, 4 of the exterior box 2 have openings 5, 5 for handles.
are formed respectively. That is, a pair of oval handle openings 5, 5 into which hands can be inserted are formed on both sides of each side wall plate 4.

The interior member 3 has approximately the same length as the side wall plate 4 of the exterior box body 2, and has a flat plate portion 6 overlaid on the inner surface thereof.
and cylindrical bent portions 7, 7 connected to the inner side end portion of the flat plate portion 6. The flat plate part 6
Oval cutouts 8 corresponding to the handle openings 5 are formed on both sides of the handle. The handle opening 5 and the notch 8 are covered by the inner wall of the cylindrical bent portion 7.

That is, as shown in FIG.
At both end portions, an outer surface plate 9 having a predetermined width, an inner surface plate 10 having a width wider than the length of the handle opening 5 and the notch 8, and a length approximately the same as the outer surface plate 9 are formed in sequence. An inner side plate 9' having a flat plate 9' and an outer plate 12 formed in a size corresponding to the inner side plate 10 are connected to each other.
A notch 11 corresponding to the notch 8 is formed. The outer side plate 9, the inner side plate 10, the inner side plate 9', and the outer side plate 12 are sequentially folded inward to form the outer side plate 1.
2 on the inner surface of the flat plate part 6, a cylindrical bent part 7 is formed as shown by the imaginary line in FIG.
As a result, an inner wall portion having a U-shaped cross section is formed to cover the cutout portions 8, 11, etc.

As shown in FIG. 3, after inserting the interior member 3 along the inner surface of the side wall plate 4, cushioning materials 13, 14 such as styrofoam are inserted into the space formed between the pair of interior members 3, 3. Then, the product 15 sandwiched from above and below is mounted. Thereafter, as shown in FIG. 4, the product 15 is packaged by closing the lid pieces 16 and 17.

In this way, the interior member 3 is arranged inside the side wall plate 4 of the exterior box body 2, and the opening 5 for the handle of the side wall plate 4 is arranged.
And since the notches 8 and 11 of the interior member 3 are covered by the inner wall of the cylindrical bent part 7,
Dust and the like that have entered through the opening 5 and the like remain in the cylindrical bent portion 7 and do not enter the storage space for the product 15.

In addition, since the outer box body 2 is reinforced in the vertical direction by the flat plate part 6 and the cylindrical bent part 7 of the interior member 3, it has excellent pressure resistance when stacking the packaging boxes 1 vertically. ing. Therefore, packaging with a simple structure and high compressive strength can be achieved without increasing the thickness of corrugated paper or the like constituting the packaging box 1 or inserting reinforcing paper tubes into the corners of the outer box body 2. The box can be formed at low cost. Furthermore, since the cylindrical bent portion 7 exerts a cushioning effect in the lateral direction of the outer box 2, it is possible to reduce the thickness of the side portions of the cushioning materials 13 and 14 that protect the product 15. Yes, the material cost can be reduced.

Moreover, the flat plate part 6 of the interior member 3 is overlapped on the inner surface of the side wall plate 4 of the exterior box body 2, and the outer surface plate 12 of the cylindrical bent part 7 is further overlapped on the inner surface, thereby forming the above-mentioned handle opening. A three-layered portion of corrugated paper or the like is formed facing the portion 5, and the packaging box 1 is configured to have the three-layered portion when being carried, so that the load during carrying is not applied to each of the portions. It will be distributed and supported. Therefore, the entire load during carrying is concentrated on one side wall plate 4, which may damage the surrounding area of the handle opening 5 or cause the handle opening 5 to become loose in the hand of the operator. It is possible to effectively prevent the upper side from digging in.

In the above embodiment, a pair of handle openings 5, 5 are provided on both sides of each side wall plate 4, but one handle opening is provided in the center of the side wall plate 4, and the handle opening 5 is provided in the center of each side wall plate 4. It is also possible to have a structure in which one cylindrical bent part covering the handle opening and one notch corresponding to the handle opening are provided in the center of the flat plate part.

(Effects of the invention) As explained above, the present invention provides an interior member that is disposed inside the side wall plate of an exterior box body in which an opening for a handle is formed, and a cylindrical bent part provided on this interior member. Since the handle opening of the side wall plate is covered by the inner wall of the box, even though the handle opening was formed to make it easier to carry the box, this handle The inner wall portion can prevent dust and the like from entering the product storage space through the opening, thereby preventing the product from being contaminated by dust and the like.

In addition, since the box body is reinforced in the vertical direction by the flat plate part and the cylindrical bent part of the interior material that constitutes the inner wall part, it is not possible to form the box body from cardboard as in the past, or to construct a separate part inside the box body. Excellent pressure resistance can be obtained with a simple configuration without inserting reinforcing paper tubes or the like. Furthermore, the cushioning effect of the cylindrical bent portion has the effect that the product can be effectively protected against cushioning acting in the lateral direction of the box.

In addition, since a three-layered part consisting of the outer wall plate of the outer box body, the flat plate part and the outer plate part of the interior member is formed around the handle opening, the load when carrying is distributed to each part. It has many practical advantages, such as being able to effectively prevent the surrounding area of the handle opening from being damaged or the upper side of the handle opening from digging into the operator's hand. It is effective.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the packaging box according to the present invention, Fig. 2 is a perspective view showing the unfolded state of the interior member, Fig. 3 is a perspective view showing the state before the product is attached, and Fig. 4 The figure is a sectional view showing a packaged product in a portion corresponding to the cross section taken along the line - in FIG. 3. DESCRIPTION OF SYMBOLS 1...Packaging box, 2...Exterior box body, 3...Interior member, 4...Side wall plate, 5...Handle opening, 6...
Flat plate part, 7... Cylindrical bent part, 8, 11... Notch part, 9... Outer side plate, 9'... Inner side plate, 10...
...Inner surface plate, 12...Outer surface plate.

Claims (1)

[Scope of utility model registration request] In a packaging box that includes an outer box body in which a handle opening is formed in a side wall plate, and an interior member inserted into the outer box body, the interior member has approximately the same length as the side wall plate of the outer box body. a flat plate portion overlapped on the inner surface thereof, and a pair of cylindrical bent portions formed inwardly on both left and right sides of the flat plate portion, and the cylindrical bent portion: an outer side plate connected to the side of the flat plate; an inner side plate connected to the outside plate and facing the inner surface of the flat plate; and an inner side plate formed in a size corresponding to the side plate, and an outer plate connected to the inner side plate and formed in a size corresponding to the inner side plate. and a packaging box characterized in that cutouts corresponding to the handle openings of the side wall plates are formed in the outer plates of the flat plate part and the cylindrical bent part, respectively.