JP2561603Y2 - Paper box with frame - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper box with a frame which is formed by bending a cardboard. In particular, a lock mechanism is provided so that the paper box can be easily assembled manually and folded into the inside of the frame after the assembly. Make sure that the inner wall does not spring up
The present invention relates to a box with a frame that can improve the bending accuracy of a corner.

[0002]

2. Description of the Related Art As shown in FIGS. 6 and 7, for example, a conventional paper box with a frame has four outer walls 22, 22, 23, and 23 raised on four sides of a rectangular bottom plate 21. As shown in FIG. The inner wall 24, 24, 25, 25 is continuously provided inside, and the frame 30 is inserted as a core material for reinforcement between the double walls formed by the inner and outer walls. The inner walls 24 and 25 are bent inward against the elasticity (repulsive force) of the paper material, and are easily pressed and fixed to the adjacent left and right side walls. There is a disadvantage that it is easy to jump up carelessly. In order to remedy this drawback, as shown in FIG.
6 and 26 are provided, and the locking projections 26 are inserted into the corresponding cuts 27 to be fixed. However, when the reinforcing core material 30 is located between the inner and outer walls, The locking projections 26 are difficult to cut into the cuts 27, and cannot be easily handled during assembly.

The present invention has been made in order to solve the above-mentioned problems. In particular, a lock mechanism replacing the conventional locking projection is provided on the inner plate and the folded-back piece, and the assembly is easily performed manually. It is an object of the present invention to propose a paper box with a frame that can improve the bending accuracy of the four corners of the box by preventing the inner plate folded inside the frame from unnecessarily jumping up after assembly.

[0004]

In order to achieve the above object, the present invention provides a rectangular bottom plate 1 having outer plates 2, 2, 3, and 3 on four sides thereof, and an inner plate 6 provided on the outside thereof. ,
6, 7 and 7 are extended, and furthermore, a connecting folding piece 8 having a 45-degree folding line 9 is integrally provided between adjacent outer plates 2 and 3,
A folded piece 10 is attached to the tip of one of the pair of inner plates 6 and 6 facing each other.
And a frame formed by connecting a folded piece 11 to the tip of a pair of inner plates 7 facing each other and engaging tongue pieces 12 to both ends of the inner plate 7. In the paper box, projections 13 and 14 each having a convex shape are formed on both ends of the end portion of the inner plate 6 and both end portions of the folded piece 10, and the inner plate 6 and the folded piece 10 are located between the projections 13 and 14. A notch 15 is formed at a position on the extension of the boundary line so as to form a substantially Y-shape, and a key-shaped receiving groove 16 for engagement is formed at each of the two corners at the tip of the inner plate 7. 1
3 and 14 are inserted and engaged.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be specifically described below with reference to the drawings. FIG. 1 is an exploded view of the present invention formed from cardboard or other cardboard, and is composed of a blank sheet punched in the shape as shown. In the figure,
Reference numeral 1 denotes a rectangular bottom plate formed at the center of the blank sheet punched out. Reference numerals 2, 2, 3, and 3 denote an outer plate connected to the four sides of the rectangular bottom plate 1 via folds. , 4, 5, and 5 are edge plates each having a small width and connected to the outside of the outer plate through a fold, and 6, 6, 7, and 7 are internal plates connected to the outside of the edge plate through a fold. The plate, designated by the reference numeral 8, is a connecting fold 8 integrally provided between the adjacent outer plates 2 and 3, and has a 45-degree fold line 9 starting from four corners of the bottom plate 1. The reference numeral 10 denotes a folded piece continuously provided at the tip of one of the pair of inner plates 6, 6, and the reference numeral 11 denotes the folded piece at the tip of the other pair of inner plates 7, 6. Folded pieces 12 are sleeves connected to both ends of the inner plates 7,7. In the present invention, a lock mechanism having the following structure is attached to the inner plate 6 or 7 and the folded piece 10 or 11.

FIG. 2 is an enlarged view of a portion A in FIG.
Projections 13 and 14 each having a convex shape are integrally provided at both ends of the zero. A cut 15 is formed between the projections 13 and 14 at a position on the extension of the boundary line formed by the inner plate 6 and the folded piece 10 so as to form a substantially Y-shape.

On the other hand, a key-shaped engaging receiving groove 16 is formed at both corners of the front end of the pair of inner plates 7 facing each other. At the time of assembling, the projections 13 and 14 are inserted and engaged with them.

In a tapered box formed by folding a double wall formed by inner and outer walls inward at a predetermined angle, as shown in FIG. After the notch 17 is formed by punching, a key-shaped engagement receiving groove 16 is formed at both corners of the front end of the inner plate 7.

In order to assemble the paper box with a frame of the present invention constructed as described above, first, the inner plate 7 is folded on the outer plate 3 from the fold of the edge plate 5, and then the inner and outer plates are attached to the bottom plate 1. Stand up vertically. After that, folded piece 11
In addition, the sleeve pieces 12 are folded inward, respectively, and are bent at right angles to the inner plate 3. Next, while folding the 45-degree fold line 9 of the connecting folding piece 8 into a valley fold so as to fold the connecting folding piece into two, the other pair of outer plates 2 facing each other are raised in the vertical direction, The inner plate 6 is bent inward from the fourth fold. At this time, the folded piece 10 is
Bend at right angles to the outside of the. Thereafter, the projections 13 and 14 are inserted into the key-shaped engagement receiving grooves 16, and the sides b of the projections 13 provided on the folded pieces 10 and the engagement edges provided at both end corners of the inner plate 7 are formed. The side f of the key-shaped receiving groove 16 is brought into contact with the side f.
To the end of

Similarly, the side c of the projection 14 provided at both ends of the inner plate 6 is brought into contact with the side e of the key-shaped receiving groove 16 provided at both ends of the inner plate 7 for engagement. The side d is brought into contact with the end of the side e. According to the present invention, a substantially Y-shaped notch 15 is provided between the projections 13 and 14 at a position on the extension of the boundary line formed by the inner plate 6 and the folded piece 10. Since 13 and 14 are easily bent, insertion into the receiving groove 16 for engagement can be facilitated. After the insertion, the edges of the side a and the side f are in contact with the side c and the side e as described above, and the edge of the side d is also in contact with the end of the side e. The inner plate does not rise unnecessarily due to repulsion. Also, the four corners of the box bend neatly. FIGS. 4 and 5 show such an assembled state.

[0011]

[Effect of the invention] As described above, according to the box of the invention,
Both small boxes and tapered boxes can be easily assembled by hand, and the lock mechanism provided on the inner plate and the folded-back plate causes the inner plate folded inside the frame to jump up unnecessarily Therefore, there is an advantage that the assembled state can be firmly held and the bending accuracy of the four corners of the box can be improved.

[Brief description of the drawings]

FIG. 1 is a development view of the present invention formed from cardboard such as cardboard.

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3 is a development view showing another embodiment of the present invention.

FIG. 4 is a partial view showing the main part of the present invention during assembly.

FIG. 5 is a partial view of the same assembled state.

FIG. 6 is a perspective view of a conventional paper box with a frame.

FIG. 7 is a perspective view showing a state in which a conventional paper box with a frame is being assembled.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom plate 2,3 Outer plate 4,5 Edge plate 6,7 Inner plate 8 Folding piece for connection 9 Folding line 10,11 Folding piece 12 Sleeve piece 13,14 Projection 15 Y-shaped cut 16 Receiving groove 17 Semi-circular cutout

Claims (1)

(57) [Scope of request for utility model registration] An outer plate is provided on four sides of a rectangular bottom plate, and inner plates are provided outside the outer plates.
7, 7 are extended, and 45
A connecting folding piece 8 having a fold line 9 is integrally provided, a folding piece 10 is continuously provided at the tip of one of the pair of inner plates 6, 6, and the other pair of inner plates 7, In a paper box with a frame in which a folded piece 11 is continuously provided at the end of the inner plate 7 and engaging tongue pieces 12 and 12 are provided continuously at both ends of the inner plate 7, both ends of the inner plate 6 and both ends of the folded piece 10 are provided. The projections 13 and 14 each having a convex shape are formed on the respective portions, and a substantially Y-shaped portion is formed between the projections 13 and 14 at a position on an extension of a boundary line formed by the inner plate 6 and the folded piece 10. Cut 15
On the other hand, a key-shaped engaging receiving groove 16 is formed at both corners of the front end of the inner plate 7 and the projections 13 and 14 are formed in the receiving grooves 16.
A paper box with a frame, wherein the paper box is inserted and engaged.