JP2814605B2 - 4-way pallet made of synthetic resin - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a synthetic resin four-sided pallet in which an upper deck and a lower deck are constituted by bars, and the upper deck and the lower deck are connected by a girder.

[Prior Art] Conventionally, a synthetic resin four-way pallet in which a top deck and a bottom deck are constituted by bars, and upper and lower decks are connected by a girder, a girder constituting the upper surface or the lower surface of a girder in the center of the pallet It consists only of bars running in the same direction, so that it is clear between the bar (A) crossing the central beam and the beam wall (B) parallel to this bar, as is evident from FIG. An opening (C) without a connecting portion was formed in the opening. When a load is loaded or placed in a state where both ends are supported, for example, when stored in a rack, the deflection due to the load becomes maximum at the center of the pallet. As a result, the girder wall was deformed, resulting in a larger deflection and, in some cases, breakage.

[Problems to be Solved by the Invention] An object of the present invention is to provide a synthetic resin four-sided steel sheet with enhanced strength against bending in any direction of the center pallet of the pallet without impairing the formability in integral molding by injection molding. It is to provide an insert pallet.

[Means for Solving the Problems] The present invention for solving the problems described above provides an upper deck and a lower deck constituted by bars, and a corner girder provided at four corners of a pallet for connecting the upper and lower decks. In the synthetic resin four-way pallet consisting of an intermediate girder provided in the middle, a central girder provided in the center of the pallet, a deck and a girder, and a fork insertion port provided for fork insertion from all sides, on the upper and lower surfaces of the central girder The crosspieces provided on the upper surface and lower surface of the fork insertion opening in one direction include the connecting bars provided on the upper surface and lower surface of the central girder, and the upper surface of the fork insertion opening in the other direction and The bar provided on the lower surface is constituted by an extending bar extending inward of the upper surface and the lower surface of the central girder, and a vertical wall connecting the tip of the extending bar up and down is provided in parallel with the connecting bar. It is characterized by This is a four-way pallet made of synthetic resin.

The pallet of the present invention is integrally formed by an injection molding bar using a fixed mold, a movable mold, and a slide core. In such a molding, the portions where the bars constituting the upper deck and the lower deck are present on both the upper surface and the lower surface are formed in a conventionally known U-shape, and are provided so as not to overlap in the vertical position. Also, the upper deck where a part of the lower deck is missing may be provided with bars having a rectangular cross section in a lattice shape. With such a structure, high rigidity can be obtained with a small weight.

Embodiment A pallet according to an embodiment of the present invention will be described with reference to FIGS.

1 is a plan view of the pallet, FIG. 2 is a front view of the pallet, FIG. 3 is a sectional view taken along the line II of FIG. 1, and FIG. 4 is a line II-II of FIG. 5 is a sectional view taken along
FIG. 6 is a sectional view taken along the line III-III of FIG.
FIG. 7 is a sectional view taken along the line VV of FIG. 2 and FIG.

The pallet of this embodiment is mainly composed of an upper deck (1), a lower deck (2), and corner girders (3), (4), (5),
(6) Intermediate girder (7), (8), (9), (10), center girder (11), fork slot (12), (13) (1) is composed of a vertical or horizontal crosspiece, of which four square portions where the fork insertion ports (12) and (13) intersect, and a cross section of the cross section of the fork insertion port (14) have a rectangular cross section. Are provided in a lattice shape, and the other portions are provided with downwardly facing U-shaped bars (15) at intervals. The lower deck (2) is fork insertion holes (12) and (13) as described above.
The intersection of the two is a large opening, and the wheels of the hand lifter can be installed on the floor and the ground. Except for the opening, the deck is provided with an upwardly facing U-shaped cross-section bar (16) having the same shape at a position not overlapping the bar (15) of the upper deck in the vertical direction.

Further, as can be seen in FIG. 7, each girder is a hollow columnar body, the upper and lower ends of which are integrally engaged with the respective bars constituting the upper deck and the lower deck.

On the upper surface of the center girder (11), as shown in FIGS. 1 and 3 and in an enlarged view of FIG. 8, a bar (15) extends inward of the center girder (11). The extension bar (15 ') is provided and is connected to the tip of a similar extension bar (16') provided on the lower deck side by being vertically suspended from the tip of the extension difference (15 '). Vertical walls (18) and (19) for reinforcement are provided. To increase the strength, the vertical wall (18), (1
Other vertical walls (20) and (21) connecting 9) may be provided. The part indicated by the number (21) in the figure is a reinforcing rib for reinforcing the crosspiece (15), and the part (22) is a drain hole.

[Effects of the Invention] The synthetic resin two-way pallet of the present invention is configured such that the upper and lower crosspieces of the central girder part where the deflection due to the load is maximized are composed of two-way crosspieces, and a part is provided inside the central girder. Since the vertical wall is provided at the tip of the crossed bar, the stress due to the load is transmitted to the vertical wall via the extension bar extending from the girder wall, and the girder wall does not change due to the load, and deflection occurs. And the pallet can be used safely.

In addition, the addition of the material is small, and the strength can be increased without substantially increasing the cost.

[Brief description of the drawings]

FIG. 1 is a plan view of a pallet showing an embodiment of the present invention, FIG. 2 is a front view of the pallet, and FIG. 3 is II in FIG.
FIG. 4 is a sectional view taken along the line II-II of FIG. 1, FIG. 5 is a sectional view taken along the line III-III of FIG.
6 is a sectional view taken along the line VV of FIG. 1, FIG. 7 is a cross-sectional view taken along the line IV-IV of FIG. 2, and FIG. FIG. 9 is a partially enlarged view and FIG. 9 is a schematic sectional view for explaining a conventional pallet. 1 top deck, 2 bottom deck, 3, 4, 5, 6, corner girder, 7, 8, 9, 10, middle girder, 11 center girder, 12, 13 fork slot , 14,15,16 …… bar, 15 ′, 16 ′ …… extension bar, 15 ″… connection bar, 18,19 …… vertical wall,

Claims (1)

(57) [Claims] A corner girder provided at four corners of a pallet for connecting an upper deck (1) and a lower deck (2) constituted by bars and upper and lower decks. The middle girder (7) (8) (9) (10) provided in the middle of the corner girder, the center girder (11) provided in the center of the pallet, and forks can be inserted from all sides provided between the deck and the girder. Fork slot (1
2) In the synthetic resin four-way pallet consisting of (13), the crosspieces constituting the decks provided on the upper and lower faces of the central girder (11) are provided on the upper face and the lower face of the fork insertion opening in one direction. The connecting bars (15 ") (16") provided across the upper and lower surfaces of the central girder and the bars provided on the upper and lower surfaces of the fork insertion opening in the other direction are located inside the upper and lower surfaces of the central girder. And the vertical walls (18) and (19) connecting the ends of the extending bars (15 ') and (16') are connected to the connecting bars. A four-sided pallet made of synthetic resin, provided parallel to (15 ″) and (16 ″).