JPS5882846A - Synthetic resin pallet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a synthetic resin pallet in which a support leg is joined to a deck board on which a lip extending continuously in one direction up to both ends is formed by blow molding on the back side of the pallet.

Synthetic resin pallets usually have a structure in which the edges on both sides of the two boards that make up the deck and their middle parts are joined with mutually parallel girders f1 Compared to conventional wooden or metal pallets. It is lightweight and has excellent chemical resistance, moisture resistance, etc. due to the nature of the synthetic resin, but if the deck board has low bending rigidity, the deck board is reinforced by providing a lip or the like.

However, in the case of a skinned type pallet with legs and a flat top surface, an embossed lip is formed on the back side of the deck board, but since the deck board and the supporting legs are integrally molded in the same mold, the deck board The lip formed on the part is interrupted at the supporting leg part, and when a load is applied, the amount of deflection of the interrupted part of the lip increases and deforms.

In addition, the supporting legs are easily damaged by the forks, and in this case, they cannot be replaced, resulting in a short lifespan of the pallet.

The object of the present invention is to provide an excellent pallet that retains the effects of conventional synthetic resin pallets while eliminating the above-mentioned drawbacks.1. This invention relates to a synthetic resin pallet formed by joining a deck board and supporting legs, each of which is formed by molding a deck board formed by a blow molding method and continuously extending in one direction up to the outer edge on the back surface thereof to the outer edge.

To explain one embodiment of the present invention shown in the drawings, the pallet of the present invention, as shown in FIG. The fork is inserted into the gap C with the ground plane G of No. 2. As shown in FIG. 2, on the back side of the deck board 1, hollow lips 4 and grooves 5, which extend continuously in one direction up to both ends, are alternately formed, and nine supporting legs 2 each having a circular cross section are screwed together by threaded portions 3. The fork is inserted from the direction C or the opposite direction.

The upper surface of the "Saiki no Detsuki Board" is hollow-molded in the shape of a flat plate, lattice, or drainboard, and the lip 4 on the back side has a void 6 as shown in Figures 3 and 4. The cross section of 4 is not limited to the shape 9 shown in the figure, but may have a shape as shown in FIG. 8(a) or (b). Note that the thickness of the lip is approximately determined by the set weight of the pallet, and it is desirable to increase the number of lips to be molded as much as possible within the moldable range.

Next, the supporting leg 2 is screwed together with the lip 4 and the threaded portion 3 provided on the supporting leg, as shown in Fig. 5, but the method of joining is not limited to screwing, but fitting together parts that match the shape. It may be fitted or bolted together, but preferably it is a threaded connection. Note that the shape of the supporting leg 2 is not limited to that shown in the figure, and may be, for example, a cylinder, a truncated cone, a polygon, an ellipse, a digit shape, etc. Also, the material thereof may be plastic, wood,
It can be made of metal, but it is preferable to use plastic that can be hollow-molded or injection-molded, especially if the gap 7 of the supporting leg 2 is to have a special cushion, such as by filling it with air or single-foam polyurethane. It is preferable that the support leg 2 is hollow molded. Furthermore, the support leg 2 may be a support leg 2 having upper and lower threaded portions 6' with opposite thread directions as shown in FIG.
By replacing the above deck board 1 with a lower deck board 1' having a similar structure, a pallet with upper and lower flat plates as shown in FIG. 7 can be obtained. In this case, the upper and lower deck board glue φ5
It is preferable to attach them in orthogonal directions in order to improve rigidity.

Furthermore, the pallet of the present invention can be joined between the back surface of the deck board 1 and the supporting legs 2 via a reinforcing material 8 [Fig. 10 (a), (b)); the reinforcing material is a lightweight and highly rigid material. For example, it may be made of wood including plywood, rigid urethane foam, rigid polyvinyl chloride, etc.
It can be installed on the entire back surface or around the supporting legs, or it can be installed in a band shape as shown in FIG. By installing this reinforcing material, the rigidity of the Shibutsuki board in the direction perpendicular to the lip can be improved.

Examples of the synthetic resins used in the pallet of the present invention include polyolefin resins such as high-density polyethylene, low-density polyethylene, polypropylene, and ethylene-propylene copolymers; vinyl chloride resins such as polyvinyl chloride and polyvinylidene chloride; Examples include polyamide resins and polyamide resins, but polyolefin resins, particularly high-density polyethylene, are preferred from the viewpoint of physical properties of the pallet and economical efficiency. In addition, antioxidants and antioxidants are added to these resins as necessary.
Ultraviolet absorption, agent, emission.

Foaming agents, dyes, pigments, organic and inorganic fillers can be added.

Since the pallet of the present invention adopts the above-described configuration, it not only greatly adds resistance to bending of the deck board and increases bending rigidity to prevent deformation due to load, but also allows molding to be performed using the blow molding method. The dovetail mold is lightweight and economical.

In addition, since the supporting legs are screwed together or connected by fitting, the supporting legs can be replaced if they are damaged by a fork, etc., extending the life of the pallet. Yes, it is economical.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Figure 1 is a perspective view of the pallet of the present invention, Figure 2 is a plan view of the back of the deck board, and the right half of Figure 5 is viewed in the direction of arrow A in Figure 1. In the front view, the left half is a sectional view taken along line XX in Figure 2, the right hand side in Figure 4 is a front view seen in the direction of arrow B in Figure 1, and the left half is a sectional view taken along line XX in Figure 2. Figure 5 is an enlarged cross-sectional view of the threaded joint of the support leg, Figure 6
The figure is an enlarged cross-sectional view of the upper and lower screw connections, Figure 7 is a perspective view of a pallet that uses both the upper and lower sides, Figures 8 (a) and (b) are cross-sectional views of the rib form on the back of the deck board, and Figure 9 is a reinforcement material. Plan view of the back side of the deck board with installed and Figure 10 (a)
, (b) is a cross-sectional view of the supporting leg mode with the reinforcing material installed. In addition, 1.1' is a deck board, 2.2' supporting legs, 3.3
' is a threaded portion, 4 is a rib, 5 is a groove on the back surface of the deck board, 6 is a gap in the rib, 7 is a gap in the support leg, and 8 is a reinforcing material. Agents 1) Akira Agent Ryo Hagiwara - Figure 1 Horse Figure 4

Claims (1)

[Claims] This is a synthetic resin pallet made by joining a deck board, which is formed by molding a lip that extends continuously in one direction up to both edges on the back surface obtained by a blow molding method, and supporting legs.