WO2002004129A1

WO2002004129A1 - Valve unit and container

Info

Publication number: WO2002004129A1
Application number: PCT/JP2001/004299
Authority: WO
Inventors: Kiyoshi Chikashige; Akira Mizuochi
Original assignee: Advanex Inc.
Priority date: 2000-07-06
Filing date: 2001-05-23
Publication date: 2002-01-17
Also published as: JP2002079147A; TW492856B; AU2001260604A1; JP3373491B2

Abstract

A valve unit and a container which are easy to assemble, producible at low cost, easy to recycle, and capable of preventing leakage of the solution on falling down. A valve unit adapted to be inserted in a container main body (Y) to suck out the solution in the inside, comprising a suck-in pipe (27) inserted in the container main body (Y), a bellows (28) retractable in the direction of its extension and communicatively connected to the upper region of the suck-in pipe (27), a suck-out pipe (21) communicatively connected to the upper region of the bellows (28), a valve (B) installed upstream of the bellows (28) and adapted to allow only the inflow or flow of the solution into the bellows (28), a check valve (G) installed downstream of the bellows (28) and adapted to allow only the outflow or flow of the solution from within the bellows (28) out into the suck-out pipe (21), and a slit plate (39) having a slit (S) positioned downstream of the check valve (G).

Description

Description Valve Units and Containers Technical Field

TECHNICAL FIELD The present invention relates to a valve unit and a container used for a pump-type container such as a hair washing agent used at home, for example. Background art

2. Description of the Related Art Conventionally, pump-type containers have been used to store, for example, hair washes and detergents used at home. This container includes a container body and a valve unit detachably inserted into the container body. Normally, the valve unit is configured such that when the piston is pressed, the piston returns and the solution is sucked up from the container body. Then, when the piston is further pressed, the solution comes out from the discharge end of the piston.

This example will be described with reference to FIGS. 18 and 19. The valve unit 1 includes a pipe-shaped valve body 2 which is removably inserted into a container body (not shown), and an L-shaped pipe-shaped piston portion 3. It is composed of

The piston portion 3 is slidably inserted into the valve body 2, and is evacuated to the atmosphere through the piston portion 3 between the suction port 4 of the valve body 2 and the piston 5 at the end of the piston portion 3. A communicating solution container 6 is formed. A valve B is provided on the suction port 4 side of the solution storage section 6 to allow only the flow of the solution from the container body side to the solution storage section 6 side. A check valve G is provided between the piston 5 and the valve B between the piston 5 and the valve B. The check valve G is provided between the piston 5 and the valve B. 7 are interposed. The coil spring 7 urges the piston portion 3 toward the valve body 2 in a direction to increase the volume of the solution containing portion 6. As shown by arrows, FIG. 18 shows a state in which the piston portion 3 is pushed in, and FIG. 9 shows a state in which the piston portion 3 is returned.

However, in the valve unit according to the background art, a coil spring is used. 7 has to be inserted between the piston 5 and the suction port 4, so that there is a problem that the assembling work is troublesome.

In addition, while there is a demand for parts recycling from the viewpoint of protecting the natural environment, the coil springs 7 made of metal usually have to be disassembled and disposed separately, which is an obstacle to reuse.

Further, since the coil spring 7 is used, there is a problem that the number of assembling steps and the number of parts increase, which leads to an increase in cost.

Also, in the container equipped with the above valve unit, the solution in the container body does not usually go out unless the piston part 3 is pushed, but when the container falls down, the valve B and the check valve G are turned off. Because of the opening, there is a problem that the solution flows out of the piston portion 3. Disclosure of the invention

Therefore, an object of the present invention is to provide a valve unit and a container which can be easily assembled, can be manufactured at low cost, and can prevent the outflow of the solution even when the product falls down.

In order to solve the above problem, a valve unit of the present invention is a valve unit inserted into a container body (for example, the container body Y in the embodiment), and includes a suction pipe (for example, A suction pipe 27) according to the embodiment, a bellows-shaped bellows (for example, a bellows 28 according to the embodiment) which is connected and connected to the upper part of the suction pipe and is capable of returning in the extending direction. A suction pipe (for example, the suction pipe 21 in the embodiment) communicating with the section, and a valve that is provided upstream of the bellows and that allows only the flow of the solution from the inside of the container body into the bellows (for example, And the valve B) in the embodiment, and provided only downstream of the bellows, and only controls the flow of the solution from inside the bellows to the suction pipe side. A check valve (e.g., check valve G in the embodiment), and a throttle portion (e.g., slit S in the embodiment) provided downstream of the check valve. Is sucked out of the container body.

With this configuration, the bellows is compressed without any solution in the bellows. As the air inside the bellows is compressed, the valve closes but the check valve opens to discharge the air inside, in order to discharge the air inside.

Then, when the bellows is released from compression, the inside of the bellows which returns to the extending direction becomes negative pressure. Then, the check valve closes, the valve opens, and the solution is sucked into the bellows from the inside of the container body and filled in the bellows.

Next, when the bellows was compressed again, the solution in the bellows was prevented from moving into the container body by the valve, so the solution in the bellows was pushed out by opening the check valve, and was pushed out. The solution is pushed out of the container body from the suction pipe without backflow by the check valve. Here, when the solution in the container body is pushed out of the container body, the solution flows vigorously from the suction pipe because the flow rate of the solution is increased by the throttle portion of the check valve. In addition, the outflow of the solution when the container body falls down can be prevented by the throttle portion.

As described above, according to the present invention, the solution in the container body can be sucked out by the expansion and contraction of the bellows which itself functions as a member for containing the solution. This has the effect of reducing the number of components and the number of assembling steps that require members for accommodating the components.

In addition, since each member can be formed of resin, there is an effect that disassembly and reuse can be easily performed as compared with the case where a steel coil spring, a valve, or a check valve is used.

The provision of the restricting section allows the solution to be drawn out of the suction pipe vigorously, so that the solution does not sag at the discharge end of the suction pipe, and has the effect of being easy to use. Even if the valve and the check valve are opened when the container equipped with is opened, there is an advantage in that the outflow of the solution can be prevented by the throttle portion.

In the valve unit according to the present invention, the throttle portion is formed by a -shaped, T-shaped, or cross-shaped slit formed in a thin plate having elastic force (for example, the slit plate 39 in the embodiment). Preferably, there is.

With this configuration, two or four parts of the plate separated by the slit are elastically deformed in the direction to increase the opening area of the slit, and the solution When the pressure exceeds the elasticity of the plate, the solution can be discharged at a stroke, and the solution can be quickly sucked out at once.

In order to prevent the solution from flowing out due to the opening of the slit when the container is overturned so that the solution flows in the reverse direction, adjust the strength of these two or four parts by the thickness of the plate and the length of the slit. Therefore, there is an effect that the degree of freedom in design is high.

In the valve unit of the present invention, it is preferable that the throttle portion is integrally formed with the check valve connected to the bellows.

With this configuration, the number of parts and assembling man-hours can be reduced by forming the throttle part integrally with the bellows and the check valve, so that costs can be reduced. This also has the effect of being easy.

Further, in the valve unit of the present invention, it is preferable that the bellows, the valve, the check valve, and the suction pipe are formed in a body.

With this configuration, it is possible to greatly reduce the number of parts and the number of assembling steps, so that the cost can be reduced. In addition, if these parts are molded of resin, they can be reused without disassembling together with the container, which has the effect of being able to respond to environmental issues.

Further, in the valve unit of the present invention, the valve or the check valve is a valve chamber integrally formed with the bellows or the suction pipe or the suction pipe (for example, the valve chambers 30 and 3 in the embodiment). 1), a valve element (for example, the valve element 33 in the embodiment) which can be externally inserted into the valve chamber, and a projection (for example, the projection 35 in the embodiment) for preventing the valve element from floating. It is preferable to have With this configuration, the valve chamber including the projection can be integrally formed with the bellows, the suction pipe, or the suction pipe, so that these are molded by resin such as blow molding, and then the valve body is pressed in to manufacture. be able to. Therefore, there is an effect that cost can be significantly reduced.

Further, in the valve unit of the present invention, each valve body of the valve and the check valve has a bowl-shaped part (for example, the bowl-shaped part 33 A in the embodiment) that opens toward the downstream side. Is preferred. With this configuration, the valve body of the valve or check valve is closed when the solution tries to flow backward, because the bowl-shaped part receives the pressure of the solution and quickly moves the valve body in the closing direction. There is an effect that the valve operation is reliably performed.

In the valve unit of the present invention, it is preferable that the valve unit has a rod portion provided outside a central portion of the bowl-shaped portion. With such a configuration, there is an effect that the posture of the bowl-shaped portion can be stabilized by the rod portion.

In the valve unit of the present invention, the valve or the check valve may include a valve chamber integrally formed with the bellows or the suction pipe or the suction pipe, and a valve body that can be externally inserted into the valve chamber. It is preferable that the valve body includes a bowl-shaped portion that opens toward the downstream side and has a cutout formed in the peripheral edge. With such a configuration, there is an effect that the solution or air can be evacuated from the notch when the valve is opened.

The container of the present invention includes the above-described valve unit (for example, the valve unit VU in the embodiment) and a container body.

With this configuration, it is possible to reduce the number of parts and the number of assembling steps for the entire container. Also, even if the valve and the check valve are opened when the container falls, there is an advantage that the solution can be prevented from flowing out to the outside by the throttle portion. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is an overall sectional view of a container equipped with a pulp unit according to one embodiment of the present invention.

FIG. 2 is an overall sectional view of the bellows unit of the embodiment.

FIG. 3 is an enlarged sectional view of a valve chamber of the valve according to the embodiment.

FIG. 4 is a cross-sectional view near the slit plate according to the same embodiment.

FIG. 5 is an explanatory view showing a slit shape (-shape) of the slit plate according to the embodiment.

FIG. 6 is an explanatory diagram showing a slit shape (cross shape) of the slit plate according to the embodiment.

FIG. 7 shows a slit shape (T-shape) of the slit plate according to the embodiment. FIG.

FIG. 8 is a sectional view showing another aspect of the slit plate according to the embodiment. FIG. 9 is a cross-sectional view showing still another mode of the slit plate according to the embodiment.

FIG. 10 is a cross-sectional view showing an attached state of the slit plate of FIG.

FIG. 11 is an overall cross-sectional view of the container equipped with the valve unit of the embodiment when the piston portion is lowered.

FIG. 12 is an overall cross-sectional view of the container equipped with the valve unit of the embodiment when the solution is discharged.

FIG. 13 is an overall cross-sectional view of the container equipped with the valve unit of the embodiment when the container is stored.

FIG. 14 is a cross-sectional view showing another aspect of the valve element according to the embodiment.

FIG. 15 is a sectional view showing another aspect of the valve element according to the embodiment.

FIG. 16 is a sectional view showing another aspect of the valve element according to the embodiment.

FIG. 17 is a sectional view showing another aspect of the valve element according to the embodiment.

FIG. 18 is a cross-sectional view showing an operation state (a state in which a piston portion is pushed) of a valve unit according to the background art.

FIG. 19 is a cross-sectional view showing an operation state (a state in which the piston portion has returned) of the valve unit according to the background art. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, Y indicates a container main body, in which a liquid shampoo is stored. The container body Y is formed of a resin, and a male screw portion 11 is formed in a cylindrical upper opening 10. A resin cap 13 having a female thread 12 to be screwed into it is removably attached to the male thread 11 of the upper opening 10. The valve unit VU force is attached by this cap 13. ing.

The valve unit VU is a resin case 14 attached to the inside of the container body に at the upper opening 10 of the container body て and facing the inside, and a resin case mounted in the case 14 And a resin-made bellows unit 16 inserted into the container body Y, and a resin-made piston portion mounted on the bellows unit 16.

The case 14 is a cylindrical member having a flange portion 17 that locks around the upper opening portion 10 of the container main body 10 and has an opening portion 18 at the bottom. A female screw portion 19 is formed on the upper inner peripheral surface of the case 14, and the guide member 15 is screwed here.

The guide member 15 has a male screw portion 20 screwed into the female screw portion 19 of the case 14, and a suction pipe 21 of a piston portion に slidable inside the male screw portion 20. It is provided with a holding portion 22 for inserting into the housing. The male screw portion 20 and the holding portion 22 are united at the upper portion and are urged in directions away from each other.

The upper portions of the holding portion 22 and the male screw portion 20 extend laterally and are formed to bend downward, and the flange portion 23 extends on the upper surface of the cap 13. The cap 13 is prevented from moving in the removal direction. A locking screw portion 24 is formed on the outer periphery of the guide member 15. The screw portion 24 is screwed into the female screw portion 26 on the back side of the cap-shaped pressing portion 25 provided on the piston portion 、. Ρ is locked in the storage position.

As shown in FIG. 2, the bellows unit 16 is inserted into the container main body され and sucks the solution therein from the container main body Υ. The bellows unit 16 is provided with a suction pipe 27 which is inserted into the container body Υ and has a suction end 32 at the lower end obliquely cut, and can be returned to the upper part of the suction pipe 27 in the extending direction. A bellows-like bellows 28 is connected in communication with the suction pipe 27.

The bellows 28 is a resin member that can return in the direction of extension, that is, the direction in which the volume of the inside increases, has a predetermined panel constant, and has an inside serving as a solution containing portion. Further, a connection part 29 to which the suction pipe 21 of the piston part 接続 is connected is formed at the upper part of the bellows 28, and is formed upstream of the bellows 28, that is, a suction pipe 27 and a bellows 28. Between the bellows 28 and the bellows 28, that is, between the bellows 28 and the connection ¾5 29 A check valve G is provided to allow only the solution to flow out of the bellows 28 to the suction pipe 21 of the piston 部. And the reverse A slit plate 39 described later is provided downstream of the stop valve G.

The valve B has a valve chamber 30 integrally formed with the suction pipe 27 and the bellows 28, and the check valve G is integrally formed with the connection portion 29 of the suction pipe 21 and the bellows 28. A valve chamber 31 is provided, and a valve that can be inserted from the suction end 32 of the suction pipe 27 or the end of the connection portion 29 of the suction pipe 21 in each of the valve chambers 30 and 31. Body 3 3 has been introduced. Here, the valve body 33 is a spherical member made of resin, but may be a bowl-shaped or hemispherical shape described later as long as each opening K can be closed, and its shape is not limited. Absent.

Here, as shown in FIG. 3, a ridge ′ 34 is formed between the suction pipe 27 of the valve B and the opening K, and the valve element inserted from the suction end 32 of the suction pipe 27 is formed. Unless 33 is inserted with a certain force, it cannot be pushed in and prevents the valve element 33 from coming off.

Then, as shown in FIG. 2, the valve B or the check valve G is located at a position downstream of the valve B and the valve chambers 30 and 31 where the protrusions 35 for preventing the valve body 33 from floating are opposed. It is formed in pairs. The protrusion 35 is also formed simultaneously when the valve B and the check valve G are formed. If the lifting of the valve element 33 can be prevented, the cross-sectional shape of the valve chambers 30 and 31 itself is changed to a shape that prevents the valve element 33 from floating, for example, an oval, a square, It is also possible to have a modified cross section such as a triangle.

Here, at the boundary between the valve B and the lower part of the bellows 28, a constricted part 36 is formed which is engaged with the opening 18 (shown in FIG. 1) of the case 14 and When the bellows 28, that is, the bellows unit 16 is locked by being locked, the bellows 28 can be supported from below.

On the other hand, a stepped portion 37 is formed at the boundary between the check valve G and the connection portion 29 of the suction pipe 21, and the stepped portion 37 is located below the holding portion 22 of the guide member 15 described above. It functions as a stopper that locks to the end and prevents the upward movement of the mouthpiece 28 that is displaced in the extending direction.

The suction pipe 27, the valve B, the bellows 28, the check valve G, the connecting portion 29, etc., which are configured as described above, are integrally formed by blow molding, and each valve element 33 is provided with the valve B and the check valve. The bellows unit 16 is formed by being pushed into the valve chambers 30 and 31 of G. As shown in FIG. 4, the end of the connection portion 29 of the suction pipe 21 is formed between the end of the connection portion 29 and the step portion D formed in the insertion portion 38 of the suction pipe 21. Between them, a slit plate (plate) 39 is interposed. When the slit plate 39 is attached to the connection portion 29, it may be inserted as it is, but it can be attached by various methods such as bonding, welding, and heat caulking. The slit plate 39 is a thin plate-like member having an elastic force sandwiched between the connecting portion 29 and the suction pipe 21 and having a thin portion near the center as shown in FIG. A letter-shaped slit (diaphragm) S is formed. The thin portion 40 is gradually formed from the periphery by the round portion R, so that stress concentration does not occur even under repeated loads due to the nature of the component. The two parts S 1, S 2 separated by the slit S can be elastically deformed and deflected by the pressure of the solution as indicated by the dashed line, and the pressure of the solution is reduced by the two parts S 1 Then, the solution is expelled at once when it exceeds the neutral power of S2. In addition, the two parts S l and S 2 do not bend when the container body Y falls and the valve B and the check valve G are opened, and the thin part is so thin that the solution can be prevented from flowing out of the slit S. The plate thickness of 40 and the length of the slit S are set.

Here, the shape of the slit S is not limited to a single character, but may be a cross shape as shown in FIG. 6, a T shape as shown in FIG. When the shape of the slit S is T-shaped, the solution can be extruded by elastically deforming the three parts S 1, S 2, and S 3 divided by the slit S, and the shape of the slit S is shaped like a +. If it is in the shape, the solution can be extruded by elastically deforming the four parts S1, S2, S3, and S4 divided by the slit S. Therefore, the shape of the slit S is not limited to these, and if the portion divided by the slit S can be deformed in a natural manner and the solution can be pushed out, and if the solution can be prevented from flowing out when the container body Y falls down, the character * is used. Shape, or any other shape.

FIG. 8 shows another embodiment of the slit plate 39. In this embodiment, the slit plate 39 is formed integrally with the connecting portion 29. With this configuration, the slit plate 39 can be formed integrally with the bellows unit 16 when forming the bellows unit 16. Therefore, the number of parts and the number of assembly steps can be reduced, and costs can be reduced. Can be planned. When the slit plate 39 is formed integrally with the connecting portion 29, the valve element 33 of the check valve G may be inserted from the suction pipe 27 side.

Here, the slit plate 39 is interposed in the solution flow path downstream of the check valve G, and if the slit S is formed, the overall shape and the mounting manner to the connection portion 29 are as described above. However, the present invention is not limited to this. For example, as shown in FIG. 9, a cylindrical portion 39a and a flange portion 39b connected thereto are provided on a slit plate 39 having the above-described slit S, and this cylindrical portion 39a is connected to a connecting portion. The flange portion 39 b may be engaged with the connection portion 29 by entering the inside of the connection portion 29. With this configuration, an old valve unit without a slit plate can be easily improved to a new type with a slit plate. Note that the cylindrical portion 39a may be fitted into the connection portion 29.

Then, the suction pipe 21 of the L-shaped piston part P slidable with respect to the guide member 15 is inserted into the connection part 29 at the upper part of the bellows unit 16 configured as shown in FIG. The part 38 is press-fitted from the outside, the piston part P is attached to the bellows unit 16 and the valve unit VU is assembled. Here, the aforementioned cap-shaped pressing portion 25 is formed at the bent portion of the suction pipe 21, and the horizontally extending end 42 of the suction pipe 21 bent at the pressing portion 25 is slightly obliquely downward. And is opened at the discharge end 43.

By pressing the pressing part 25 of the piston part P composed of the pressing part 25 and the suction pipe 21, the lower part presses and shrinks the bellows 28, whose lower part is regulated by the case 14. It sucks out the solution.

According to the above embodiment, as shown in FIG. 1, in a state where there is no solution in the bellows 28, when the pressing portion 25 of the piston portion P is pushed downward, the bellows 2 as shown in FIG. As the 8 is compressed, the air inside the bellows 2 8 is pushed out, so the valve element 3 of valve B closes the opening K, but the valve element 3 of the check valve G tries to discharge the air inside. 3 opens the opening K and discharges air from the suction pipe 21 of the piston P. Then, when the pressing portion 25 of the piston portion P is released, the bellows 28 tries to return in the extending direction, so that the inside of the bellows 28 becomes negative pressure. Then, the valve element of check valve G 3 3 Closes the opening K, and as the piston part P returns, the valve element 33 of the valve B opens the opening K as shown by the chain line in FIG. 1 and moves from the container body Y into the bellows 28. The solution is sucked and filled into the bellows 28 (as shown in Fig. 1).

Next, as shown in FIG. 12, when the pressing portion 25 of the piston portion P is pressed again, the solution in the bellows 28 is closed by the valve body 33 of the valve B so that the opening K is closed. The solution is prevented from moving, so that the solution is pushed up by the compressed bellows 28 to push up the valve body 33 of the check valve G to open the opening K and to be pushed out. Then, the extruded solution in the piston portion P does not flow backward to the container body Y by the valve B, but is pushed out from the discharge end 43 through the suction pipe 21 of the piston portion P.

Therefore, since the solution in the container body Y can be sucked out by the expansion and contraction of the bellows 28 which itself functions as a member for storing the solution, it is necessary to store the solution as in the case of using a coil spring. No components are required, and the number of parts and assembly man-hours can be reduced.

In addition, since each member can be molded with resin, it is easier to disassemble and reuse compared to the case where a coil spring, valve, or check valve made of steel is used.

Here, as shown in FIG. 12, when the solution tries to open the check valve G and to come out of the suction pipe 21, the solution is cut off by the slit S at the slit plate 39. The two parts S l and S 2 receive pressure in a direction to enlarge the opening area of the slit S. When the pressure of the solution exceeds the elastic force of each of the parts S 1 and S 2, the two parts S l and S 2 elastically deform as shown in FIG. The solution can be quickly sucked out at a time. Further, even if the valve B and the check valve G are opened when the container to which the valve unit VU is attached falls, there is an advantage that the slit plate 39 can prevent the solution from flowing out. If the solution in the bellows 28 is pushed out due to the rise in the pressure inside the bellows 28 when the container is not overturned, the slit plate 39 can prevent the solution from being pushed out. The solution can be prevented from dripping from the discharge end 43 when the container is not overturned.

Therefore, there is an advantage that the solution does not sag at the discharge end 43 of the end 42 of the suction pipe 21 and is easy to use. Also, in consideration of when the container falls, Since the elastic force of the two portions S 1 and S 2 divided by the slit S can be adjusted by the thickness of the thin portion 40 of the slit plate 39 and the length of the slit S, the design is made. High degree of freedom.

Here, when the slit plate 39 is integrally formed with the bellows 28 and the check valve G, the number of parts and the number of assembling steps can be reduced, so that the cost can be reduced.

Since the bellows 28, the check valve G, the valve B, and the suction pipe 27 can be integrally formed by professional molding, the cost can be significantly reduced, and the bellows 28 is inserted inside. Since the valve body 33 is made of resin, it can be easily reused together with the container body Y and other parts, and can cope with environmental issues.

Here, FIG. 13 shows the storage state of the container. In this storage state, the female screw part 26 of the pressing part 25 of the piston part P is connected to the locking screw part 2 of the guide member 15 as described above. At this time, the pushing stroke of the piston part P becomes the maximum because it is screwed into 4. Therefore, it is necessary to take this into consideration when setting the compression length of bellows 28. In addition, during storage, the piston portion P is not pushed any further, so there is no outflow of the solution due to the pressing of the piston portion P. However, if the container falls down in such a storage state, As described above, since the outflow of the solution by the slit plate 39 can be reliably prevented, there is an advantage in product management during storage.

FIGS. 14 to 17 show other aspects of the valve body 33 of the valve B and the check valve G in the embodiment.

As shown in FIG. 14, the valve body 33 of the valve B and each valve body 33 of the check valve G have a bowl-shaped portion 33A that opens toward the downstream side. For convenience of illustration, the bellows 28 are shown in a simplified manner in each figure, and only the valve element 33 is shown by hatching.

Outside the central portion of the bowl-shaped portion 33A, a rod portion 33B extending upstream is formed. This rod portion 33B stabilizes the posture of the bowl-shaped portion 33A. The outer peripheral surface of the bowl-shaped portion 33 A is formed in an arc shape, and the outer peripheral surface is in close contact with the inner peripheral surface of the valve chamber 31. Also, by reducing the thickness of the bowl-shaped portion 33 A or by using a soft material, the valve B and the check valve G can be further improved. Sealability can be improved.

Therefore, according to the valve body 33 of the valve B or the check valve G shown in FIG. 14, when the solution is going to flow backward, the bowl-shaped portion 33A receives the pressure of the solution. Therefore, the valve element 33 is quickly moved in the closing direction in a stable state by the rod portion 33B that moves so as to penetrate the solution, so that the valve closing operation of the valve element 33 is reliably performed. When the solution tries to flow in a direction to open the valve B or the check valve G, the bowl-shaped portion 33 A of the pushed-up valve body 33 locks to the pair of projections 35 facing each other, and the opening is formed. Open K to allow solution flow.

FIGS. 15 to 17 show another embodiment of the valve element 33. Note that the same parts as those in the above embodiment are denoted by the same reference numerals. Fig. 15 shows the V-shaped notch 33C formed around the bowl-shaped part 33A instead of the projection 35 shown in Fig. 14 and opening the valve. In this state, the solution and air are allowed to escape from the notch 33C. Further, FIG. 16 shows the rod portion 33 B of FIG. 14 made longer to further stabilize the posture of the valve body 33, and the embodiment shown in FIG. The periphery of the opening of 33A is formed in a straight shape, and the rod 338 is formed to be longer as in the embodiment of FIG.

Therefore, even in these embodiments, when the solution tries to flow backward, the bowl-shaped portion 33A receives the pressure of the solution, and the valve body 33 quickly moves in the closing direction in a stable state by the rod portion 33B penetrating the solution. The valve moves and the valve closing operation of the valve element 3 is reliably performed. Also, if the solution tries to flow in the direction to open the valve B or the check valve G, the flow of the solution from the notch 33C of the bowl-shaped part 33A is allowed in the one shown in Fig. 15. In the case shown in FIGS. 16 and 17, the bowl-shaped portion 33 A of the pushed-up valve body 33 is engaged with the pair of opposed projections 35 and the opening K is opened. Allow solution flow. Industrial applicability

ADVANTAGE OF THE INVENTION According to the valve unit of this invention, since the solution in a container main body can be sucked out by expansion and contraction of the bellows which itself functions as a member which stores a solution, it is possible to store the solution as in the case of using a spring. No parts required The effect is that the number of points and the number of assembling steps can be reduced. In addition, since each member can be formed of resin, there is an effect that disassembly and reuse can be performed more easily than when a steel coil spring, valve, or check valve is used. The provision of the restricting portion allows the solution to be drawn out of the suction pipe vigorously, so that the solution does not sag at the discharge end of the suction pipe, and has the effect of being easy to use. Even if the valve and the check valve are opened when the container equipped with the valve falls, there is a merit that the solution can be prevented from flowing out to the outside by the throttle.

Further, in the valve unit of the present invention, the pressure of the solution is increased by the fact that two or four portions of the plate, which are divided by the slits constituting the throttle portion, are elastically deformed in a direction to increase the opening area of the slit. When the elastic force of the plate exceeds the elastic force, the solution can be discharged at a stroke, so that the solution can be quickly sucked out at once. Also, to prevent the solution from flowing out due to the slit opening when the container is overturned so that the solution flows in the reverse direction, the elastic force of these two or four parts should be determined by the thickness of the plate divided by the length of the slit. Since adjustment is possible, there is an effect that design freedom is high.

Also, in the valve unit of the present invention, the number of parts and the number of assembling steps can be reduced by being integrally molded with the bellows and the check valve, so that the cost can be reduced. This also has the effect of being easy.

Further, in the valve unit of the present invention, since the bellows, the valve, the check valve, and the suction pipe are formed into a body, it is possible to greatly reduce the number of parts and the number of assembling steps, thereby reducing costs. There is an effect that can be. In addition, if these parts are formed of resin, they can be reused without disassembling together with the container, which has the effect of addressing environmental issues.

Further, in the valve unit of the present invention, since the valve chamber including the projections can be integrally formed with the bellows or the suction pipe or the suction pipe, the valve chamber is manufactured by resin molding using a professional molding or the like, and then the valve body is pressed. can do. Therefore, there is an effect that cost can be significantly reduced.

Further, in the valve unit of the present invention, the valve of the valve or the check valve is configured to prevent the solution from flowing backward. Then, since the bowl-shaped portion receives the pressure of the solution and quickly moves the valve body in the closing direction, there is an effect that the valve closing operation of the valve body is surely performed.

Further, in the valve unit of the present invention, by providing the bowl portion with the rod portion, there is an effect that the posture of the bowl portion can be stabilized.

Further, in the valve unit of the present invention, the provision of the notch on the periphery of the bowl-shaped portion has the effect that the solution or air can be removed from the notch when the valve is opened. In addition, since the container of the present invention is composed of the above-mentioned rebunite and the container main body, it is possible to reduce the number of parts and the number of assembling steps as a whole. In addition, even if the valve and the check valve are opened when the container falls, there is an advantage that the solution can be prevented from flowing out to the outside by the throttle portion.

Claims

The scope of the claims

1. A valve unit inserted into the container body,

A suction pipe inserted into the container body,

A bellows-shaped bellows communicating with the upper part of the suction pipe and capable of returning in the extending direction;

A suction pipe communicating with the upper part of the bellows,

A valve that is provided upstream of the bellows and that allows only inflow of a solution from inside the container body into the bellows;

A check valve that is provided downstream of the bellows and that allows only the outflow of the solution from inside the bellows to the suction pipe side;

A throttle provided downstream of the check valve;

A valve unit that sucks out the solution in the container body out of the container body.

2. The valve unit according to claim 1, wherein the squeezed portion is a U-shaped slit formed on a thin plate having elasticity.

3. The valve unit according to claim 1, wherein the throttle portion is a T-shaped slit formed on a thin plate having elasticity.

4. The valve unit according to claim 1, wherein the throttle portion is a cross-shaped slit formed in a thin plate having elasticity.

5. The valve unit according to claim 1, wherein the throttle portion is formed integrally with the check valve connected to the bellows.

6. The valve unit according to claim 1, wherein the bellows, the valve, the check valve, and the suction pipe are formed as a body.

7. The valve or the check valve includes a valve chamber integrally formed with the bellows or the suction pipe or the suction pipe, a valve body that can be inserted into the valve chamber from outside, and a lift of the valve body. 2. The valve unit according to claim 1, wherein the valve unit has a projection for preventing the valve unit.

8. The valve unit according to item 7 ', wherein each valve body of the valve and the check valve has a bowl-shaped portion that opens toward the downstream side.

9. The valve unit according to claim 8, further comprising a rod portion provided outside a central portion of the bowl-shaped portion.

10. The valve or the check valve includes a valve chamber integrally formed with the bellows or the suction pipe or the suction pipe, and a valve body that can be inserted into the valve chamber from outside. 2. The valve unit according to claim 1, wherein the valve body includes a bowl-shaped portion that opens toward the downstream side and has a cutout formed in a peripheral edge.

11. A container comprising: the valve unit according to any one of claims 1 to 10; and a container body to which the valve unit is detachably attached.