JPS6139225B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION An object of the present invention is to provide a corner holder which is effective for assembling a box made of corrugated cardboard or the like, in which a flap at the end of a side plate is overlapped and fixed to the other side plate at a corner part of the box.

Generally, when assembling a box, the flaps at the corners are fixed by stitching, gluing, etc., but this type of assembly makes it impossible to disassemble the box, which is inconvenient during transportation.

For this reason, a corner holder 1 as shown in FIG. 7 has been developed. This corner holder 1 consists of a band-shaped flexible piece 2 and insert bodies 3, 3' integrally provided at both ends of the flexible piece 2. Each said plug-in body 3, 3' has a base plate 4.4' which is approximately U-shaped in outline;
4' forms fitting grooves 5, 5' which are open on the outside. The flexible piece 2 has a plurality of ribs 6 on the upper edge,
It is also connected at a lower position than the upper ends of the substrates 4, 4', and as shown in FIG. 5' and attach them as shown in FIG. 9 to assemble the box.
By the way, the plurality of boxes 7 and 7' assembled as shown in FIG.
The outer shape of the lower part of 7' is made smaller so that it fits into the lower box 7. When stacking the cardboard boxes, the flexible pieces 2 and ribs 6 provided on the corner holder 1 attached to the lower box 7 are used to place the lower part of the upper box 7'. U formed in 1
When the lower part of the upper box 7' hits the font substrates 4 and 4', there is a possibility that the skin of the box 8' will peel off, causing a problem that the strength of the box 7' will be reduced. Further, the U-shaped substrates 4, 4' hit the lower part of the upper box 7', making it difficult to stack the boxes 7' smoothly. Also, the load of the upper box 7' is transferred to the bottom surface portions 11, 11' of the fitting grooves of the box 7, which are in contact with the lower surface portions 10, 10' of the inserts 3, 3' formed on the corner holder 1. join,
In other words, there was a problem in that the load was applied only to a portion of the fitting groove bottoms 11, 11', making it impossible to obtain stable strength.

The present invention relates to a box corner holder that eliminates the above-mentioned conventional drawbacks, and examples thereof will be described below in Figs. 1 to 6.
This will be explained based on the diagram.

FIG. 1 shows a corner holder 12 of a box according to an embodiment of the present invention. 'It's more formal. Each of the inserts 14, 14' has a flexible piece 13
The board 15, 15' has a substantially U-shaped outer shape perpendicular to the longitudinal axis of the board, and L-shaped flange pieces 16, 16' are provided on one side of the board 15, 15' along the outer surface.
Fitting grooves 18, 1 are provided and are continuous on both sides and lower sides of the substrates 15, 15' and are open on the outside.
8', the flexible piece 13 and the insert body 1
4 and 14' are formed so that their upper surfaces coincide with each other. Further, the flexible piece 13 has a plurality of ribs 19 on its upper edge.

A receiving plate 17 is provided on the upper surface of the insert body 14, 14', and is integrally provided on the upper surface side of the base plate 15, 15' and the L-shaped flange pieces 16, 16'. Each of these constituent members is integrally formed of a flexible synthetic resin material such as polypropylene.

FIG. 2 shows a box 20 in which the corners 12 of the box according to the invention are used for assembly;
3 are overlapped, and the flap 24 of the other side plate 21 is similarly overlapped with the side plate 22, and insertion grooves 25 and 26 are formed in common between the side plate 21 and the flap 23, and between the side plate 22 and the flap 24.

As shown in FIG. 3, the insertion body 1 of the corner holder 12 is
4, 14', and insert the insertion groove edges of the side plate 21, flap 23, side plate 22, and flap 24 into the fitting grooves 18, 18' of the insert bodies 14, 14'. 28 and the receiving plate 17 of the insert body, fit the ends of the insertion groove into each other until they come into contact with each other. In this state, the side plate 21 and the flap 23, the side plate 22 and the flap 24 are connected to the base plate 15, 15', the flange piece 16,
16' and assembled.
In addition, when disassembling the corner holder 12, the corner holder 12 can be removed using its flexible piece 13.

FIG. 4 shows a box on the other side in which the corner holder 12 of the present invention is used. 25 and 26 are formed on the one side plate 21 and the flap portion 23, and the corner holder 12 is attached as shown in FIG.

FIG. 6 shows a state in which a plurality of boxes 20, 20' assembled with the corner holder 12 of the present invention are stacked, the bottom of the upper box 20' is made smaller and tapered, and the lower box 20 At this time, the bottom of the upper box 20' touches the flexible part of the corner holder 12 of the lower box 20 and the upper surface of the substrates 15, 15', and the side plate of the box 20. 21 flap 24 and the other side plate 21
The upper surfaces 27, 2 of the insertion grooves 25, 26 are located at the inner edges of the
8 and is fitted into the stepped portion 29 to enable stable stacking.

The corner holder of the present invention is used as described above, and by inserting the two inserts into the insertion grooves in the corner portions of the box, the box can be assembled easily and reliably, and it is also easy to remove.
Furthermore, since the flexible piece bends freely, it can be applied even if the two insert bodies are inserted in inappropriate positions. It can also be used as a receiving body when stacking, and can prevent damage to the bottom of the upper box during stacking, which has a great practical effect.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a corner holder of a box according to an embodiment of the present invention, FIG. 2 is a perspective view of a box using the corner holder of the present invention, and FIG. 3 is a perspective view of a box equipped with a corner holder. FIG. 4 is a perspective view of another example of a box using the corner holder of the present invention, FIG. 5 is a perspective view of the box of FIG. 4 equipped with a corner holder,
Fig. 6 is a perspective view of boxes to be stacked, Fig. 7 is a perspective view of a conventional corner holder, Fig. 8 is a perspective view of a box using the same corner holder, and Fig. 9 is a perspective view of a box equipped with the same corner holder. FIG. 12... Corner holder, 13... Flexible piece, 1
4, 14'... Insert body, 15, 15'... Board, 16, 16'... Flange piece, 18, 18'...
... Fitting groove, 19 ... Rib, 17, 17' ... Reception plate, 20, 20' ... Box, 21, 22 ... Side plate, 23, 24 ... Flap, 25, 26 ... Insertion groove, 27 , 28... Upper surface part of the insertion groove, 29...
Step part.

Claims (1)

[Claims] 1 A band-shaped flexible piece and an insert body integrally provided on both sides of the flexible piece, the insert body having a substantially U-shaped outer shape, continuous on both sides of the outer periphery and the lower side, and extending outwardly. The fitting groove has a fitting groove that is open to the top, and the end of the fitting groove is closed by a receiving plate that is integrally formed on the top surface of the insert body, so that the top surface of the flexible piece and the top of the insert body are closed. A box corner holder characterized by matching top surfaces.