JPH1035675A - Plastic tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plastic tank which can be stacked vertically and stably. SOLUTION: A plastic tank is equipped with a handle 12 and an inlet 16 for putting in/out liquid on an upper part 15 while a cap 20 is removably attached on the inlet 16. A recessed groove 22 of such a shape that the handle 12 and the cap 20 can be fitted in is provided on a bottom, so that when a plurality of the plastic tanks are stacked vertically, a curved face of a recess 26 of the recessed groove 22 is in large plane contact with a curved surface of an upper part 15 of a lower plastic tank, whereby force is dispersed and the tanks can be safely and stably positioned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic tank for storing a liquid such as kerosene or water.

[0002]

2. Description of the Related Art Conventionally, for example, kerosene cans that carry and store kerosene in small portions are known to be made of oil-resistant hard plastic. This kerosene can has a box-like outer shape with an R formed at a corner, a handle is integrally molded at the center of the upper surface, and kerosene inlet and outlet are provided near both ends of the handle. I have. A cylindrical male screw portion is formed on each of the peripheral edges of the inlet and the outlet, and a cap formed with a female screw and provided with a packing for preventing leakage is detachably provided on the male screw portion. .

[0003]

In the case of the above-mentioned prior art, the upper handle or the cap hinders the kerosene cans from being stacked one on top of the other and takes up space for storage. Moreover, none of the kerosene cans made of plastic satisfy the safety standards that allow stacking and storage, and there is no one with sufficient strength. There is also a kerosene can with a flat upper surface, but it cannot be stably positioned and can be stacked, and has no strength that can be stacked and stored, and does not satisfy safety standards. In addition, since the position is not specified, there is a risk that it will collapse if stacked carelessly.

[0004] The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide a plastic tank which can be stably stacked up and down.

[0005]

According to the present invention, there is provided a poly-tank having an upper portion provided with an inlet through which a handle and a liquid are taken in and out, and a cap which is removably fitted in the inlet, and which is provided at the bottom portion. Provided with a recess that can be fitted with a hand and a cap, and when stacking a plurality of plastic tanks of the same type up and down, the curved surface of the inner surface of this recess comes into surface contact with the curved surface of the upper surface of the lower plastic tank to stably position. This is the plastic tank that comes into contact. At this time, the caps are fitted into the recesses of the plastic tanks stacked on top of each other and positioned with respect to each other.

In the plastic tank of the present invention, when plastic tanks of the same type are vertically stacked, the upper surface of the lower plastic tank and the curved surface of the concave portion provided at the bottom of the upper plastic tank come into surface contact with each other in a wide range. Positioned, the force of the upper plastic tank is distributed on the upper surface of the lower plastic tank and is stably stacked, so that the handle and the projecting portion of the cap are not hindered, and the stack can be stably positioned.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 6 show a plastic tank 10 according to a first embodiment of the present invention, which is made of oil-resistant hard resin such as polyethylene and has a capacity of, for example, 15 liters for oil. In addition, it goes without saying that it can be used as a tank for water and other liquids in addition to oil such as kerosene. The outer shape of the plastic tank 10 has a curved outer surface, is a long oval in the horizontal direction in the front view as shown in FIG. 4, and has an oval shape when viewed from above and below as shown in FIGS. As shown in FIG. 5, it has an egg shape that is long in the vertical direction when viewed from the side.

[0008] In the upper center of the plastic tank 10, a handle 1
2 are formed so as to extend in the lateral direction with respect to the front. The handle 12 is integrally molded from the main body of the plastic tank 10, and a shallow recess is formed in a portion where the finger below the handle 12 hits.
There is provided a receiving portion 14 formed continuously.

A kerosene inlet 16 and an outlet 18 are provided near both ends of the handle 12. The inlet 16 and the outlet 18 are each formed in a cylindrical shape, and the peripheral surface thereof is surrounded by a male screw 19. A female screw is formed inside the male screw portion 19, and a cap 20 to which a packing for preventing leakage is attached is screwed. Each cap 20
Is formed with a U-shaped recess 21 for finger hanging, and is rotatable with a light force.

The bottom of the plastic tank 10 is provided with a concave groove 22 in the lateral direction in the front view. Both sides of the concave groove 22 are formed as a pair of convex portions 24 serving as grounding portions on the bottom surface of the plastic tank 10. In the concave groove 22, a concave portion 26 in which the handle 12, the caps 20, 20 are stably fitted is provided. The concave portion 26 is provided at a position where it is fitted to the handle 12 and the caps 20 of the lower polytank 10 when the polytank 10 of the same type, which is divided into three places, is vertically stacked. A curved surface 28 having a curvature along the curved state of the upper part 15 of the plastic tank 10 is formed on the inner edge of the concave groove 22, and the curved surface 28 comes into surface contact with the upper surface of the lower plastic tank 10 so as to evenly contact the upper surface. Stacked stably.

The plastic tank 10 can also store a plurality of plastic tanks 10 of the same type stacked one above the other by putting a liquid such as kerosene or water from the inlet 16 and closing the cap 20. At this time, the handle 12 and the caps 20 provided on the lower plastic tank 10 are fitted into the concave portions 26 of the upper plastic tank 10, and the curved surface 28 of the concave groove 22 is brought into surface contact with the upper surface of the lower plastic tank 10. Is positioned.
Accordingly, the handle 12 and the cap 20 do not hinder the stacking operation when stacked vertically, and can be stacked at an accurate position. In addition, the curved surface 28 of the groove 22 is evenly brought into surface contact with the upper portion of the lower plastic tank 10 so as to abut the upper plastic tank 10 in a well-balanced manner. Further, recess 2
The handle 6 is formed in conformity with the shape of the handle 12 and the cap 20, and the handle 12 and the like are fitted into the recesses 26, thereby preventing displacement and dropping.

Further, the appearance of the plastic tank 10 is rounded and has an unconventional shape, and although the capacity is large, the appearance can be made relatively small. Furthermore, the outer shape is formed in a rounded shape, and there are few portions where stress is concentrated such as corners, and even when stacked, the upper and lower plastic tanks 10 come into surface contact with each other with curved surfaces, and strength against impact, load, etc. Can also be higher.

Next, a plastic tank according to a second embodiment of the present invention will be described with reference to FIGS. Here, the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.

The plastic tank 30 of this embodiment is formed in a shape that is even more rounded than the plastic tank 10 of the above embodiment. Thereby, the inclination of the upper portion 15 facing the concave groove 22 becomes larger, and the radius of curvature becomes larger. Similarly, the groove 2 which contacts the upper part 15
The inner surface of No. 2 is formed with a similar curvature, the load is more dispersed, and the strength against the load in the vertical direction is further increased.

The polytank is used for various purposes other than kerosene cans, such as an emergency or camping drinking water tank. The shape, size, material, and the like of the plastic tank are not limited to the above-described embodiment, and can be appropriately changed according to the application.

[0016]

The plastic tank according to the present invention can stably and reliably stack a plurality of plastic tanks vertically and saves storage space, and has a rounded shape as a whole. The curved surfaces, which are the contact surfaces, are in surface contact with each other, there is no portion where the force is concentrated, and it is strong against a long-term load or impact, and is preferable in appearance.

[Brief description of the drawings]

FIG. 1 is a perspective view of a plastic tank according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a usage state of the plastic tank of the embodiment.

FIG. 3 is a plan view of the plastic tank of this embodiment.

FIG. 4 is a front view of the plastic tank according to the embodiment.

FIG. 5 is a right side view of the plastic tank according to the embodiment.

FIG. 6 is a bottom view of the plastic tank of this embodiment.

FIG. 7 is a perspective view of a plastic tank according to a second embodiment of the present invention.

FIG. 8 is a front view of the plastic tank of this embodiment.

FIG. 9 is a plan view of the plastic tank of this embodiment.

FIG. 10 is a bottom view of the plastic tank of this embodiment.

[Explanation of symbols]

 10, 30 plastic tank 12 handle 15 upper part 20 cap 22 concave groove 24 convex part 26 concave part 28 curved surface

Claims (2)

[Claims] 1. A polytank having an upper portion provided with an inlet through which a handle and a liquid are taken in and out, and a cap removably attached to the inlet, and a lower portion to which the handle and the cap can be fitted. The concave portion is provided, and when a plurality of plastic tanks are stacked up and down, the curved surface of the concave portion comes into surface contact with the curved surface of the upper surface of the lower plastic tank, and is stably positioned and abutted. 2. The method according to claim 1, wherein the cap is fitted in the concave portion of the plastic tank stacked on the upper portion to position the upper plastic tank, and the concave portion of the bottom portion is in wide surface contact with the upper surface of the lower plastic tank, and 2. The plastic tank according to claim 1, wherein a force applied to the plastic tank is dispersed to stably and safely hold the upper plastic tank.