JPS638438Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a comparative example of a sprayer, an injector, a washer, etc. in which a manual pressure pump is connected above a pressure accumulating container containing water or a chemical solution, etc. This invention relates to the improvement of a plastic pressure accumulator vessel for use in large-capacity vessels.

[Conventional technology]

Previously, this type of pressure accumulator container found in foreign products had a structure in which the entire bottom surface was recessed inward into a bowl shape, leaving only the periphery at the bottom of the container. Due to this increase, the concave portion of the bottom surface protrudes downward, resulting in a drawback that the pressure accumulator container becomes unstable to sit on.

Additionally, some domestically produced containers have a short cylindrical seat fitted at the bottom of the container, but this requires additional time and materials to manufacture.

[Problem that the invention attempts to solve]

This invention is an attempt to eliminate the above-mentioned drawbacks of conventional products, to find a design that is more preferable in terms of strength and strength, and is more ergonomically preferable in terms of pressure accumulation operation as a pressure accumulation type sprayer.

[Means for solving problems]

In other words, in terms of strength, the present invention assumes (1) that the entire container is approximately spherical, and (2) that the bottom structure is designed to bulge downward significantly and include multiple support convexities. The seat is formed to bulge downward.

In addition, from an ergonomic point of view, by making the entire pressure storage container into a vertically elongated spherical shape, the grip of the pressure pump can be placed in a favorable position, and the supporting convex seat on the bottom of the container keeps the container stable at all times. It is designed to be supported.

〔Example〕

Examples will be explained below.

In the embodiment shown in FIG. 1, the pressure accumulator 6 is formed into a vertically elongated spherical shape as a whole, including a top 1, a body 2, and a bottom 3, and the bottom 3 gently bulges downward into a large-diameter spherical shape. Furthermore, the bottom portion 3 is provided with raised bearing convex seats 4, 4, .

From the viewpoint of reinforcement, it is preferable for the convex seat to have three to four band-shaped protuberances radially extending outward from the center and gradually increasing in width and height on the lower surface of the bottom portion 3.

Furthermore, the top part 1 and the body part 2, the body part 2 and the bottom part 3, the bottom part 3 and each supporting convex seat 4 formed on the bottom part,
4...... are all connected as loosely and smoothly as possible without sharply inwardly recessing. Note that a mouth portion 5 is connected above the top portion 1, and a male thread is provided on the outer periphery of the mouth portion 5 to connect a pressure pump to be described later.

Referring to FIG. 2, to explain the manner in which the pressure pump and the pressure storage container are connected to the pressure pump, the internal thread provided on the inner periphery of the coupling tube N provided at the lower end of the cylinder C of the pressure pump P is connected to the pressure storage container described above. The pressurizing pump P and the pressure accumulating container 6 are removably connected by screwing into a male thread provided on the mouth portion 5 of the container 6.
In the figure, T is an outer hem tube provided on the outer periphery of the lower end of cylinder C, V is a check valve attached to the lower end of cylinder C, B is its opening/closing valve, and S is a restoring spring. The pressure accumulator 6 is pressurized by holding the grip G at the tip of the piston rod D and moving the piston up and down. A flexible liquid conduit is led out through the upper part of the pressure storage container, an on-off valve is opened, and a nozzle attached to the tip of the liquid conduit is brought into contact with the pressurized liquid. Obtainable. Note that K in the figure is a hook provided on the upper end cover of the cylinder C, and is used to hang the above-mentioned nozzle when not in use.

The pressure accumulator of the present invention is made of polyethylene as a raw material and is molded into a desired shape by blow molding means.An example of the dimensions in the case of the shape shown in FIG. 1 described above is as follows.

Vertical length L: 300 mm Maximum diameter of the body D ₂ : 200 mm Diameter of the bottom end of the body D ₃ : 150 mm Radius R from the center of the bottom to the outside of the support convex seat ₄ : 80 mm Outside the mouth Diameter D ₁ : 45mm Mouth wall thickness: 8mm Top wall thickness: 8mm Body wall thickness: 7mm Support convex wall thickness: 5mm In addition, the hollow cylindrical shape is molten during blow molding. The raw material (parison) has an outer diameter of 100 mm,
The wall thickness is 8 mm.

As confirmed by the results of actual measurements, the thus obtained pressure accumulator of the present invention can withstand an internal pressure of 18 to 20 kg/cm ² , and can withstand an internal pressure of 3 to 5 kg/cm ² that is commonly used for pressure accumulating containers such as manual sprayers. In fact, it has about 4 to 5 times the strength, and is sufficiently reliable from the standpoint of safety.

Figure 3 shows three examples of the shape of the pressure accumulator. In the figure, A shows an oval shape as a whole with the body 2 and a bottom part 3, B shows an approximately cylindrical shape of the shell 2, and C shows a body 2 with a generally cylindrical shape. Each of them has a generally conical shape with a wide lower part.

[Effect of idea]

As mentioned above, the pressure accumulator of the present invention is designed to adopt an ideal spherical shape for its overall shape in terms of strength, so it has a generally vertically elongated spherical shape, and the bottom part gently curves into a large-diameter spherical shape. It bulges downward,
In particular, the bottom part is further reinforced by forming a plurality of supporting protrusions that bulge downward with curved surfaces, and the connecting boundary portions of the convex curved surfaces forming the container are prevented from sharply inwardly recessing. The parts constituting the container are connected as loosely and smoothly as possible so that each part has the required strength so that there is no part that is extremely weak in strength.

In addition, functionally, by making the entire pressure storage container vertically spherical, when pressurizing the container with a manual pump by placing the container on the ground or floor, the grip of the pressure pump can be placed in the most ergonomically preferable position. At the same time, the pump can be pressurized while being held in a stable state by the supporting convex seat which also functions as reinforcement and bulges out below the bottom.

Further, the pressure accumulator container of the present invention can be produced in the above-mentioned shape most economically by employing blow molding of plastic material for its molding.

That is, the present invention is an effective invention that is strong and can withstand long-term use, has excellent functionality, is easy to use, and is inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an embodiment of the pressure accumulator of the present invention, and FIG. The central part of the pressure pump and the lower part of the pressure accumulator container have been cut away.
In addition, Figure 3 shows three examples of the shape of the pressure storage container, where A is oval, B is cylindrical, and C is a truncated conical shape, and the upper part of the pressure pump is cut off in each case. . In addition, in the drawings, 1...top, 2...body, 3...
...bottom, 4...support convex seat, 5...mouth, 6...pressure accumulator, P...pressure pump, C...cylinder, G
...Grip, D...Piston rod, V...Check valve device, B...Opening/closing valve, S...Restoration spring, T...Outer skirt tube, N...Connection tube, K...Hook part. .

Claims (1)

[Scope of utility model registration request] The entire container is formed into a generally vertically elongated spherical shape by a top portion that connects the pressure pump, and a body portion and a bottom portion that are successively connected to the top portion, and the bottom portion gently bulges downward into a large-diameter spherical shape. The bottom has a curved surface with a plurality of raised supporting convex seats that also serve as reinforcement and bulges downward, and the connecting boundary of each convex curved surface that forms the container is as loose as possible without sharply inwardly concave. A plastic pressure accumulator for connecting a manual pressure pump, characterized by smooth connection.