JPH051743Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a check valve that is mainly assembled into a squeeze bottle.

[Conventional technology]

Conventionally, as one of the means for dispensing the contents (fluid) in a container, a tube was inserted and assembled into the container, its upper end protruded from inside the container, and the body of the container was firmly grasped by hand. There are so-called squeeze bottles in which the liquid inside is poured out from a tube by applying pressure.

[Problem that the invention seeks to solve]

In this conventional squeeze bottle, after the body of the container is pressurized to pour out the liquid content, when the pressure on the container is released, the liquid content in the tube naturally falls to the level of the liquid content in the container. Therefore, when pouring out the liquid, it is necessary to push the liquid that has fallen to the liquid level up to the opening at the upper end of the tube, and even though a large amount of pressure is applied, the liquid cannot be poured out as expected. , it felt inefficient and difficult to use. When the viscosity of the content liquid is high, the spray amount is small, making it even more difficult to use.

In order to solve the above problem, conventional methods have been used to provide a check valve at the bottom end of the tube, but this method requires many parts such as bullets, has a complicated structure, and increases manufacturing costs. It was also on.

The present invention was devised to solve these problems, and an object of the present invention is to provide a check valve that has a simple structure and is inexpensive to manufacture.

[Means to solve the problem]

Therefore, the present invention has a valve body 2 in which a valve seat piece 6 serving as a valve seat is provided inwardly from the lower inner surface of a cylindrical cylinder piece 5, and a lower end portion is tightly fitted into the upper part of the valve body 2. A ball 4 is movably positioned in the valve body 2 and presses against the valve seat piece 6 to prevent backflow of fluid. A projecting piece 7 that deforms the open lower end portion of the tube 3 into a non-perfect circular shape is protrudingly provided at the portion where the tube 3 is tightly fitted.

[Effect]

When dispensing the liquid content 11 from a squeeze bottle into which the check valve 1 of the above-described configuration has been inserted and assembled, pressure is applied by grasping the bottle body 10 by hand. The content liquid 11 rises within the tube 3 due to the pressure and is poured out from the opening at the upper end of the tube 3. At this time, the ball 4 rises due to the pressure of the liquid content 11 and comes into pressure contact with the open lower end of the tube 3.
Since the open lower end of the tube 3 is deformed into a non-perfect circular shape by the projection 7, a passage 8 is formed in a portion that does not come into contact with the ball 4. By passing the content liquid 11 through this passage 8, it is possible to pour out the content liquid 11 described above.

When the pressure on the bottle body 10 is released, there is no pressure to push up the liquid 11 in the tube 3, so the liquid 11 tries to fall to the level of the liquid 11 in the bottle, causing the ball 4 to move downward. Press. With this pressing force and the weight of the ball 4 itself,
The ball 4 comes into pressure contact with the valve seat piece 6 and blocks the passage of the liquid content 11 in the tube 3. As a result, the liquid content 11 in the tube 3 is allowed to descend, and its liquid level is positioned above the level of the liquid content 11 in the bottle.

Therefore, when dispensing the liquid content 11 by repeatedly pressurizing the bottle body 10 several times, the tube 3
Since the inside is always filled with the liquid 11, dispensing can be accomplished efficiently.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a bottle in which the check valve 1 of the present invention is assembled, FIG. 2 shows the main parts thereof, and FIG. 3 shows the shape of the open lower end of the tube 3.

As shown in FIG. 2, the protrusions 7 here have vertical pieces protruding from two opposing positions, but their shape, number, protruding positions, etc. are not limited. Instead, it is sufficient to deform the lower end open portion of the tube 3 into a non-perfect circular shape and form a passage 8 through which the liquid content 11 can pass even when the ball 4 is pressed against it.

A plurality of notches 9 are formed at the lower end of the cylinder piece 5, which allows the liquid content 11 to easily enter the tube 3 even when the lower end of the cylinder piece 5 comes into contact with the bottom wall of the bottle body. This is how it was done. This notch 9
The shape and number of are not particularly limited either.

[Effect of idea]

As described above, the present invention can provide a check valve that prevents the backflow of the liquid content by simply providing a projecting piece on the cylinder piece, and it is possible to provide a check valve that prevents the backflow of the liquid inside the cylinder, and it is possible to provide a check valve that prevents the backflow of the liquid contained in the cylinder. Since no members are required, it is easy to manufacture and exhibits excellent effects such as reduced manufacturing costs.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a bottle with the check valve of the present invention assembled, Fig. 2 is a sectional view showing the main parts of the check valve, and Fig. 3 is the open lower end of the tube in Fig. 2. FIG. Explanation of symbols, 1... Check valve, 2... Valve body, 3
...tube, 4...ball, 5...tube piece, 6...
...Valve seat piece, 7... Projection piece, 8... Passage, 9... Notch, 10... Body, 11... Content liquid.

Claims (1)

[Claims for Utility Model Registration] A valve body 2 having a valve seat piece 6 projecting inward from the lower inner surface of a cylindrical cylinder piece 5, which serves as a valve seat, and a lower end portion of which is tightly sealed in the upper part of the inside of the valve body 2. A check valve 1 comprising a tube 3 that fits into the valve body 2, and a ball 4 that is movably located within the valve body 2 and presses against the valve seat piece 6 to prevent backflow of fluid, wherein the cylindrical piece 5 A check valve 1 comprising a protruding piece 7 that deforms the open lower end of the tube 3 into a non-perfect circular shape on a portion of the upper inner surface of the tube 3 into which the tube 3 is tightly fitted.