JP4515601B2 - Cardboard tray - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lock mechanism for standing and temporarily fixing two cardboards and a cardboard tray provided with the lock mechanism.
[0002]
[Prior art]
Conventionally, as a tray for transporting fruits and vegetables, each pair of side walls and end walls connected to the periphery of the bottom wall is independently erected, and bent pieces extending from both side edges of the side walls are placed inside the end walls. A board made of corrugated board is used in which a board extending from the upper edge of the end wall is bent inward and the board and the side wall are engaged.
[0003]
[Problems to be solved by the invention]
However, in such a tray, if the crosspiece is lifted up, the standing state of the side wall and the end wall cannot be maintained, so the fruits and vegetables must be taken in and out while the crosspiece is bent inward, and workability is improved. There is a problem of being bad.
[0004]
SUMMARY OF THE INVENTION An object of the present invention is to temporarily fix the side wall and end wall of a cardboard tray.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a locking piece on one cardboard and a locking hole on the other cardboard, and the locking piece is oblique to the locking hole. A corrugated cardboard locking mechanism is configured to be pushed into and locked, and the side wall and end wall of the corrugated cardboard tray are temporarily fixed by this locking mechanism.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0007]
The blank shown in FIG. 1 is made of reinforced corrugated cardboard having a medium core of 180 to 200 g / m ² , and a pair of side walls 2, 2 and end walls 3, 3 are connected to the peripheral edge of the bottom wall 1. Folding pieces 4 are continuously provided on both side edges of each other. A crosspiece 5 is connected to the end edge of the end wall 3, and an outer cover plate 6 is connected to both side edges of the crosspiece 5. The crosspiece 5 is wider than the bottom wall 1 and slightly protrudes on both sides of the bottom wall 1.
[0008]
Engagement pieces 7 are formed by cutting bent pieces 4 on both side edges of the end wall 3, and engagement holes 8 are formed on both sides of the side wall 2. The locking piece 7 becomes wider toward the tip, the tip width is wider than the locking hole 8, and the base end width is about the same as the locking hole 8. The base end ruled line of the locking piece 7 is positioned inside the ridgeline of the side wall 2 and the bent piece 4 when the tray is formed.
[0009]
An insertion piece 9 projects from the front edge of the outer cover plate 6, and an insertion hole 10 is provided in the side wall 2 along the ridge line with the bottom wall 1. Engagement protrusions 11 are provided on both sides of the front edge of the side wall 2, and engagement holes 12 are provided on both sides of the crosspiece 5 along the ridge line with the outer cover plate 6. Is provided with a protrusion 13.
[0010]
In order to assemble the blank and store the fruits and vegetables, first, as shown in FIG. 2, the side walls 2, 2 and the end walls 3, 3 are erected from the bottom wall 1, and the bent piece 4 is placed inside the end wall 3. Bend along.
[0011]
Next, when the locking piece 7 is pushed into the locking hole 8, the locking piece 7 opens obliquely and fits into the locking hole 8 with a large contact area, and the side wall 2 and the end wall 3 are raised by the fitting. Since the state is maintained, the fruits and vegetables can be stored in the tray with the crosspiece 5 being lifted up.
[0012]
Then, after storing the fruits and vegetables, as shown in FIG. 3, the crosspiece 5 is bent inward, the engagement protrusion 11 is engaged with the engagement hole 12, and the outer cover plate 6 is along the outside of the side wall 2. When bent downward and the insertion piece 9 is inserted into the insertion hole 10, the side wall 2 and the end wall 3 are fixed in an upright state, and the tray T has a firm structure.
[0013]
Further, since the locking piece 7 is covered with the outer cover plate 6, the appearance is good, and the locking piece 7 is prevented from being pulled out from the locking hole 8 during transportation. Even if the plate 5 is flipped up, the side wall 2 and the end wall 3 do not fall down, and the fruits and vegetables do not jump out.
[0014]
Further, as shown in FIG. 4, the tray T is slightly opened upward when viewed from the side, and when a plurality of trays T are stacked, the lower portion of the upper tray T faces the side wall 2 of the lower tray T. Is fitted between the protruding portions 13 and 13, and the protruding portion 13 prevents the shift in the short surface direction, and the side edges of the outer cover plate 6 of the protruding portion 13 of the lower tray T and the upper tray T Contact with each other and displacement in the longitudinal direction is prevented, so that the load does not collapse.
[0015]
In addition, in the tray for lightweight articles, the standing state of the side wall and the end wall may be maintained only by the lock mechanism as described above.
[0016]
Furthermore, the locking mechanism can be applied to a cushioning material configured by bending cardboard.
[0017]
【The invention's effect】
As described above, according to the present invention, the side wall and the end wall of the tray are temporarily fixed by the locking mechanism that pushes the locking pieces obliquely into the locking holes, so that the fruits and vegetables can be taken in and out with the crosspieces raised. Workability is improved.
[Brief description of the drawings]
FIG. 1 is a view showing a blank of a cardboard tray according to the present invention. FIG. 2 is a perspective view showing an assembly process of the above. FIG. 3 is a perspective view showing an assembly state of the same. Side view shown [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bottom wall 2 Side wall 3 End wall 4 Bending piece 5 Crosspiece 6 Outer plate 7 Locking piece 8 Locking hole 9 Inserting piece 10 Inserting hole

Claims (1)

Each pair of side walls (2) and end walls (3) connected to the peripheral edge of the bottom wall (1) are erected, and bent pieces (4) extending from both side edges of the side walls (2 ) are end walls (3 In the corrugated board tray in which the crosspiece (5) extending from the upper edge of the end wall (3) is bent inward and the crosspiece (5) and the side wall (2) are engaged. A locking piece (7) projectingly provided on the side edge of the end wall (3) and extending from the side of the side wall (2) to the base of the bent piece (4) (8) The locking piece (7) is wider toward the tip, the tip width is wider than the locking hole (8), and the base end width is about the same as the locking hole (8). The base ruled line of the locking piece (7) is set to be located inside the ridge line of the side wall (2) and the bent piece (4), and the locking piece (7) is set to the locking hole (8). Is pushed from the outside of the side wall (2), and the locking piece (7) is fitted obliquely into the locking hole (8) in a state of being inclined, to lock the side wall (2) and the end wall (3), Extend the locking piece (7) from both side edges of the crosspiece (5) Cardboard trays, wherein the covered outside cover plate (6).

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