JP2537156Y2 - Cap with pouring pump and container equipped with the cap - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap with a pouring pump for pouring a highly viscous liquid such as a shampoo and a container equipped with the cap.

[0002]

2. Description of the Related Art Conventionally, a cap with a pouring pump for pouring a high-viscosity liquid is mounted on a self-supporting rigid container, and has a structure in which air can flow into a container head space. Attached to a container whose internal volume decreases as the internal solution decreases, such as a flexible tube-shaped flexible container without independence, shuts off the inflow of air into the container and discharges the contents. It is known that the structure is such that the internal volume of the container changes. The pump structure of these caps with a discharge pump has a check valve at the lower part of the cylinder, and a piston that moves up and down in the cylinder or a movable valve body corresponding to the piston is urged upward by a spring. The piston shaft is attached to a shaft, and the inside of the piston shaft is hollow and serves as a pouring path, and a pouring head having a lateral pouring path formed at an upper portion of the piston shaft is mounted.
By pressing the pouring head downward and then releasing,
As the piston shaft is restored by the spring, the measuring chamber in the cylinder defined by the check valve and the piston becomes a negative pressure, and a certain amount of liquid is sucked into the measuring chamber,
By pressing the dispensing head again, the liquid in the measuring chamber is pushed and rises through the dispensing passage of the piston shaft,
The liquid is discharged from the discharge port at the tip of the discharge head through the discharge path of the discharge head.

[0003]

[Problems to be solved by the present invention]
Since the liquid discharged from the liquid measuring chamber is discharged from the discharge port through the inside of the piston shaft and the discharge head, the discharge path is long, and the amount of the internal solution remaining on the discharge path is large. Moreover, since the spout at the tip of the spout head is always open, the spouting path is open to the atmosphere, and the highly viscous internal solution remaining in the spouting path solidifies and adheres. There is. In addition, the conventional cap with a dispensing pump has a structure in which the piston shaft is moved up and down with respect to the cap body, so that the dispensing head inevitably protrudes considerably above the cap and is bulky. Was. The conventional pump structure has a complicated structure because a discharge path must be formed in the discharge head and the piston shaft, and a valve for opening and closing the outlet of the measuring chamber must be provided at the beginning of the liquid outflow path. However, there is a disadvantage that the cost is increased. On the other hand, in the case where a cap with a dispensing pump is attached to a flexible container such as a conventional flexible tube-shaped container, the container is not self-supporting because it is flexible, and furthermore, the container is reduced with a decrease in the internal solution. This also causes problems such as lack of beautiful appearance.

[0004] The present invention is intended to solve the above-mentioned conventional problems, except that at the time of liquid injection, the outlet is closed to prevent air from entering the injection path, and solidification of the residual liquid and The first object of the present invention is to prevent deterioration due to air, eliminate a spouting path from a measuring chamber to a spout, make the pump structure extremely simple, and operate the piston in a substantially horizontal direction, thereby achieving a compact structure. The second object of the present invention is to prevent the independence and external deformation of the container in which the volume of the solution changes with the decrease of the internal solution without the invasion of air into the container , and the appearance of the external appearance is improved. A third object is to obtain a container with a cap with a dispensing pump that can be raised.

[0005]

According to the present invention, there is provided a cap with a dispensing pump according to the present invention, comprising a cap body having a container mouth and neck engaging wall, and a fixed amount of the cap being attached to the cap body and reciprocating a piston into a measuring chamber. A dome valve having a dome-shaped dome valve formed of an elastic material and having a slit formed on the top thereof, the dome valve being provided with a dispense pump for sucking up the internal solution and discharging the solution from the dispense pump. The first object has been achieved by adopting a configuration characterized in that the slit is always tightly closed and closed and can be opened and liquid can be poured out when pressurized from the inside. . In addition, the pouring pump is formed so that a valve cylinder formed through the top wall of the cap body, a check valve provided at a lower end of the valve cylinder, and a substantially horizontal direction at an upper end of the valve cylinder. A cylinder having a spout at one end and a piston shaft through-opening at the other end, reciprocally fitted to the inner peripheral surface of the cylinder, and urged by a spring to the opposite side to the spout. The second object can also be achieved by having a piston fixed to a piston shaft and forming a measuring chamber inside the cylinder between the dome valve and the piston. In addition, the above
“Orientation” means not only a completely horizontal orientation, but also
Including the state that is slightly inclined from the horizontal state
It is. Further, a skirt wall is formed on the cap body of the cap with a dispensing pump to achieve the second object, outside the container mouth and neck engaging wall, and the cap with the dispensing pump and the container mouth and neck are formed. A tube-shaped or bottle-shaped flexible container made of a soft material whose mouth and neck are fitted to the engagement wall, and fitted to the lower end of the skirt wall to surround the outer periphery of the container and provide autonomy. By combining with an outer cylindrical body formed of a self-supporting material, a flexible container equipped with a self-supporting cap with a dispensing pump can be obtained, and the third object is also achieved at the same time. I was able to. Ma
The third object achieves the second object.
Cap with dispensing pump and cap with dispensing pump
A self-supporting peripheral wall where the mouth and neck fit into the mouth and neck engagement wall
Having an ascending fit on the inner surface of the peripheral wall along the peripheral wall.
Combining with a bottle-shaped container body having a bottom wall that is
The bottom wall rises as the internal solution decreases due to the pouring pump.
As a result, the inner volume is reduced without deforming the peripheral wall.
Variations can also be achieved. In addition,
The above components do not necessarily mean that they are separate or integral, for example, the cap body and the cylinder may be formed integrally, or may be formed separately and assembled, Design changes are possible.

[0006]

The dome valve provided at the tip of the spout is made of an elastic material such as rubber and is formed in a dome shape.
The slit formed at the top of the dome is always in close contact with the elasticity, and is easily opened by pressing from inside the dome,
It does not open with pressure from outside the dome. Therefore, the dome valve has a check valve function that opens only in one-way flow and prevents backflow. Therefore, when the liquid stored in the measuring chamber is pushed by the piston, the dome valve is opened by the pressure of the liquid, and a constant amount of the internal solution can be discharged. When the injection is completed and the pressurization of the dome valve is released, the slits are brought into close contact with each other, and the inflow of air into the interior is shut off. With the return of the piston, the inside of the measuring chamber becomes a negative pressure, and the content liquid is sucked into the measuring chamber to be ready for the next pouring. Therefore, in the case of a pump of the type in which liquid is discharged through the discharge path of the piston shaft and the discharge head, air is prevented from entering the discharge path, so that the liquid remaining in the discharge path can be solidified or removed. Deterioration can be prevented. Moreover, the prevention of air entry into the metering chamber into and in the container, the content liquid can be prevented from contacting with the outside air.

Further, since the dome valve performs the same function as the conventional check valve provided at the outlet of the measuring chamber, a measuring chamber is formed between the dome valve and the piston, and the liquid is directly discharged from the measuring chamber to the outside. Can be poured out. Therefore, there is no need to provide a pouring passage that penetrates the piston and the pouring head as in the related art, so that the structure is simple. Since the cylinder of the pump is formed laterally above the container port, the pump can be made compact without being bulky. And, since the internal volume of the container also decreases as the internal solution decreases due to the negative pressure, the container space can always be filled with the internal solution and the internal solution can be completely poured out. According to the present invention, since there are few protrusions such as cylinders into the container,
The internal solution can be more completely discharged from the container, and waste of the remaining internal solution can be eliminated.

Further, the mouth and neck of a flexible container in the form of a tube or a bottle made of a soft material is fitted to the container mouth and neck engaging wall of the cap body, and the flexible member is fitted to the lower end of the skirt wall. By attaching an outer cylinder made of a self-supporting material that provides self-sustaining by surrounding the outer periphery of the flexible container, the flexible container provides self-sustaining, and apparently has the same contents as a normal bottle. Since the outer shape does not change even when the number of objects is reduced, the appearance is not spoiled. Therefore, a fixed amount can be dispensed by the pump, and furthermore, it is possible to prevent air from entering the container, and it is possible to obtain a container excellent in the traction. Alternatively, the container mouth and neck engagement of the cap with dispensing pump
A self-supporting peripheral wall in which the mouth and neck are fitted to the wall;
A bottom wall which is fitted to the inner surface of the
A combination of a bottle-shaped container body having the spout Pont
So that the bottom wall rises as the internal solution decreases
By doing so, apparently the surrounding wall does not change at all,
Reduces deposition, resulting in a container with excellent fashionability
Can be

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of a cap with a pouring pump according to the present invention. In the figure, reference numeral 1 denotes a cap body made of plastic, which is formed by a container mouth and neck engaging wall 3 formed with a screw 2 to be screwed into the container mouth and neck, and a skirt wall 4 on the outside thereof. 5 and below. A central portion of the top wall 5 is opened to form a valve cylinder 6 serving as a liquid passage, and a cylinder 7 having an axis substantially parallel to the top wall 5 is formed at an upper end thereof. 8 is a valve cylinder 6
Are formed at appropriate intervals on the upper side of the inner peripheral surface of the ball, and regulate the rising position of the ball 10 received by the valve seat 9 of the ball valve provided below the valve cylinder. It should be noted that a plate-shaped valve body may be used instead of the ball valve.

One end (left end in the figure) of the cylinder 7 is opened as a spout 11 with which a dome valve to be described later is engaged, and the other end (right end in the figure) is opened to penetrate a piston shaft. Reference numeral 13 denotes a piston shaft fitted to the inner peripheral surface of the cylinder so as to be able to reciprocate. A piston 14 is formed on the outer peripheral surface so as to slide closely on the inner peripheral surface of the cylinder wall, and a pressing piece 15 is fitted on the right end side. The left end is stepped at the left end side and a spring 17 is interposed between the dome valve 16 and the dome valve 16 fitted to the spout port 11, and is constantly urged to move the piston shaft 13 rightward. I have. The dome valve 16 is connected to the spout 11
Is formed, the tip is in the shape of a dome, and is formed to be slightly thicker with rubber. At the top of the dome of the dome valve, there is formed a slit 19 serving as a liquid discharge nozzle. The slit is always tightly closed and closed, and is opened against the elasticity of rubber by pressing from inside the dome. The inner space of the cylinder defined by the dome valve 16 and the piston 14 is
0. Reference numeral 21 denotes a piston stopper stopper, which is formed with a hole through which the piston shaft penetrates, and is fitted to the right end side opening of the cylinder so as to restrict the movement of the piston to the right and seal the right side opening of the piston. doing. A cover lid 22 is detachably fitted to the left end of the cylinder wall so as to cover the outer surface of the dome valve.

The cap with a pump according to the present invention is constructed as described above. In the present embodiment, as shown in FIGS. 1 and 3, a screw is attached to the mouth and neck 26 of a tubular container 25 whose inner volume can be changed. It is applied as a cap for quantitatively dispensing a highly viscous content liquid such as a rinse filled in the container. FIG. 1 shows a state of the pump in an unused state. In order to pour out the content liquid from this state, the pressing piece 15 is pressed against the spring 17 to obtain the state shown in FIG.
When the pressing is released, the piston is double-acted by the spring force of the spring. At that time, the dome valve 16 is in a state where the slit 19 is in close contact with the slit, and the volume of the measuring chamber is increased and the measuring chamber becomes a negative pressure. Therefore, the ball valve is opened and the viscous liquid in the container is measured. Ascending into the room, a predetermined amount of content liquid is stored in the measuring chamber. When the piston has completely returned and the liquid has been poured into the measuring chamber, the ball returns due to its own weight or the pressure at which the viscous liquid in the measuring chamber is poured out, closes the valve hole, and a fixed amount of liquid enters the measuring chamber. Maintain a stored state. Since the pressure inside the container also becomes negative as the internal solution decreases, the container does not squeeze and no head space is generated.

When the pressing piece is pressed again from this state,
The liquid stored in the measuring chamber 20 is pushed by the piston 14 and the pressure of the liquid causes the slit 19 of the dome valve to be pressed.
Is opened as shown in FIG. 2 (a), and a certain amount of the inner solution is poured out. When the dispensing is completed, the pressure of the pressing piece 15 is released, and the piston returns, the pressure in the measuring chamber becomes negative, the slit 19 of the dome valve 20 closes, and at the same time, the content liquid is sucked into the measuring chamber. Be prepared for exit. Thereafter, by repeating the above, a fixed amount of the content liquid is poured out each time the piston is pressed. As described above, according to the present embodiment, the dome valve provided at the tip of the spout port seals the measuring chamber except during the discharging of the internal solution, so that the internal solution sucked into the measuring chamber is discharged to the outside. In addition to preventing outflow, it is possible to prevent air from entering the measuring chamber and prevent solidification of the internal solution in the measuring chamber. In addition, since the ingress of air into the container can be prevented, especially as a cap of the container for the anaerobic internal solution,
It has excellent effects. Then, as the internal solution is reduced by repeatedly injecting the internal solution, the internal volume of the container is also reduced by the reduced amount, so that the internal solution can be poured out to the end and waste of the remaining internal solution is eliminated. be able to. Therefore, if the cap with a pouring pump of this embodiment is applied to a plastic extruded multi-layer container as disclosed in Japanese Patent Application Laid-Open No. 63-12427, which was previously provided by the present applicant, the content of quantitative measurement can be obtained by a simple operation. Since the container can be poured out, and the outer layer of the container has resilience, a quantitative dispensing container having excellent appearance characteristics can be obtained.

FIG. 4 shows another embodiment of the present invention. In this embodiment, the cylinder 30 is tilted in order to improve the operation and dischargeability of the pump. Since the third embodiment is the same as the first embodiment, the same members are denoted by the same reference numerals, and the detailed description will be omitted. 5 and 6 show an embodiment in which the shape of the skirt wall of the cap with a dispensing pump according to the present invention is changed according to the container in which the inner volume of the cap is changed, and the container and the cap with the dispensing pump are combined. It is an example. Some conventional flexible containers, such as tubular containers, have a cap that is enlarged so that it becomes self-supporting on the top surface of the cap in an inverted state. However, since the outer shape changes with the decrease in aesthetics, there is a problem that the aesthetic appearance is inferior. In this embodiment, in order to eliminate the difficulty, the outside of the tubular container is surrounded by a rigid outer cylinder, and the aesthetic appearance is improved by eliminating the independence and the change of the outer shape in the upright state. .

In the embodiment shown in FIG. 5A, a soft bottle 35 formed by soft blow molding is used, and an outer cylinder 36 is used.
A rigid upper and lower opening outer cylinder body 37 formed of synthetic resin, paper, metal, or the like, and a stabilizing ring 38 fitted to the lower end opening of the cylinder body for improving self-sustainability.
It is composed of An outer cylinder body fitting wall 42 is formed on the skirt wall 41 of the cap body 40 so as to fit into the upper opening of the outer cylinder body 37. The upper part is self-supporting like a normal rigid container, and has an excellent aesthetic effect without changing its appearance due to the pouring of the content liquid. FIG.
(A) is an embodiment in which the skirt wall 47 of the cap body 46 is extended above the cup-shaped outer cylinder body 46 in which the air inlet hole 45 is formed in the bottom wall surface. The parts 48 are fitted together to form an outer cylinder 49. Reference numeral 50 denotes a tube formed of a soft material, and the mouth and neck 51 is screwed into the mouth and neck of the cap body.

In the embodiment shown in FIG. 6, the bottom wall 57 of a container 56 having a bottle-shaped free-standing peripheral wall 55 rises as a container whose internal volume changes as the internal solution decreases. The inner volume is changed. That is, the container is composed of a cap with a pouring pump and its capacity.
Self-supporting peripheral wall 5 in which the mouth and neck fits into the mouth and neck engagement wall
Bottom wall fitted to the inner surface of 5 so as to rise along the peripheral wall
57 in combination with a bottle-shaped container body having
Because of the decrease of the solution by the pouring pump,
As the wall rises, the inner volume is reduced without deforming the peripheral wall.
Can be changed. Since the basic structure of the cap with a discharge pump in the above embodiment is the same as that described in the first embodiment, the same reference numerals are given to the same members, and the detailed description is omitted. .

FIG. 7 shows a dispensing pond which achieves the first object.
It is a reference example of a cap with a cap, the reference example, air enters into the container by pouring out the internal solution, it is possible to pour out the internal solution without changing the internal volume of the container, It is a cap with a pouring pump that is attached to a rigid container such as a normal plastic bottle. In the figure, reference numeral 60 denotes a cap body having a container mouth and neck engaging wall 59 screwed to the container mouth and neck, 6
1 is a cylinder, 62 is a stem, 63 is an engagement flange 64 and a stem flange 6 formed on a piston shaft 70.
5 is a piston which also serves as an open / close valve at the inlet of the spouting path, and 66 is a spring for urging the item upward, 68
Is a check valve ball, 69 is a check valve seat, 71
Is a pouring head fitted to the upper part of the piston shaft 70, and the pouring paths 72 and 73 are formed through the inside of the piston shaft 70 and the pouring head 71, and the pouring path end of the pouring head is opened. Outlet 74. The above structure has the same configuration as that of the conventional cap with a dispensing pump, and a detailed description thereof will be omitted.

In the cap with a pouring pump, a rubber dome valve 75 having a dome wall is attached to a pouring port 74 of the pouring head 71 by a joint ring 78. The dome valve has a slit 76 at the top of the dome wall and an engagement flange 77 at the base end for engaging with the spout 74 as in the previous embodiment. The cap with a pouring pump is configured as described above, and is screwed and attached to the mouth and neck of a container such as a plastic bottle, and the pressing head 71 is rotated from the state of FIG. As a result, the piston shaft is raised by the bias of the spring 66, and the stem is also raised together therewith, so that the measuring chamber is gradually expanded to a negative pressure. When the pressure in the measuring chamber becomes negative, the ball valve is opened, and the piston 63 is engaged with the stem flange 65 and rises with the liquid outlet opening closed. Inhaled. When the dispensing head is pressed from the state where it has reached the uppermost position, the liquid in the measuring chamber is pressed and the piston 63 is pressed.
Rises until it engages with the engagement flange 64 to open the liquid outlet inlet. The liquid in the measuring chamber reaches the outlet 74 through the outlet passages 72 and 73, and pressurizes the inner surface of the dome valve 75. , The slit 76 is opened, and the liquid is poured out. When the dispensing is finished and the pressure of the dispensing head is released,
The piston shaft rises again and a certain amount of liquid is sucked into the measuring chamber. At this time, the slit 7 of the dome valve 75
6 is in a closed state due to its elasticity, so that the pouring path is shut off from the outside air, solidification and deterioration of the liquid remaining in the pouring path can be prevented, and the next pouring can be performed smoothly.

[0018]

[Effects of the Invention] The present invention has the following special effects. The slit of the dome valve provided at the tip of the spout is elastically adhered and seals the spout except during liquid pouring, so that the liquid remaining in the pouring path or the liquid in the measuring chamber is Can be prevented from coming into contact with air, and solidification and deterioration can be prevented. Moreover, since it performs the same function as the check valve de Mubarubu is provided in a conventional measuring chamber outlet,
It is not necessary to provide a liquid outflow passage penetrating the piston and the dispensing head as in the conventional case, and the structure is simple. And since the cylinder part of a pump is formed substantially laterally above the container port, it can be made compact without being bulky. Furthermore, since there are few projecting parts such as cylinders into the container, the internal solution can be more completely poured out of the container. According to the configuration of the second aspect, the flexible container further provides independence, and the appearance does not change even when the content is reduced similarly to a normal bottle, so that the appearance is not spoiled. In addition, a pump can be dispensed at a constant rate, and the deterioration of the internal solution due to the invasion of air into the container can be prevented. Further, according to the configuration of claim 3, the internal solution is reduced.
The bottom wall rises along the inner surface of the self-supporting surrounding wall
The inner volume can be changed without deforming the surrounding wall.
And easily dispenses a fixed amount of liquid without impairing the aesthetic appearance.
Can be poured out and prevent deterioration of internal solution
To obtain a container that can be made and has excellent fashionability
Can be.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state in which a cap with a dispensing pump according to an embodiment of the present invention is attached to a container.

FIG. 2 is a cross-sectional view showing an operating state of the cap with a pouring pump in FIG. 1;
Indicates a state where the pouring of the internal solution has been completed.

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a cross-sectional view showing a state in which a cap with a dispensing pump according to another embodiment of the present invention is mounted on a container.

5 (a) and 5 (b) are cross-sectional views of an embodiment of a flexible container equipped with a cap with a pouring pump according to the present invention.

FIG. 6 is a cross-sectional view of a flexible container equipped with a cap with a dispensing pump according to an embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a state in which the cap with the pouring pump according to the reference example of the present invention is attached to the container.

[Explanation of symbols]

1, 40, 46 Cap body 3 Container mouth and neck engaging wall 4, 41, 47 Skirt wall 6 Valve cylinder 7, 30, 61 Cylinder 11 Injection port 13, 70 Piston shaft 14, 63
Piston 15 Pressing piece 16, 75
Dome valve 17, 66 Spring 19, 76
Slit 25, 56 Container 35 Soft bottle 36 Outer cylinder 37 Outer cylinder body 50 Tube

Claims (3)

(57) [Scope of request for utility model registration] 1. A cap body having a container mouth and neck engaging wall, and a pouring pump attached to the cap body, the pump reciprocating a piston to suck up a certain amount of an internal solution into a measuring chamber and to pour the solution from a spout. Wherein the dispensing pump is
Valve cylinder formed through the top wall of the cap body
A check valve provided at a lower end of the valve barrel;
It is formed almost horizontally on the upper end of the cylinder, and the spout is on one end
Cylinder with a piston shaft through hole formed in it
And is fitted reciprocally on the inner peripheral surface of the cylinder,
Piston shaft urged by a spring on the side opposite to the spout
The piston fixed to the shaft and the top
A dome-shaped slit is formed and attached to the spout
A dome valve, the dome valve and the piston
A weighing chamber is formed inside the cylinder between
The slit of the valve is always tightly closed and closed by the piston.
When it is pressurized from inside, it opens to measure the liquid in the measuring chamber.
A cap with a dispensing pump characterized in that it can be dispensed. Wherein the dispensing cap with pump according to claim 1, wherein said cap body has a skirt wall external dimensions of the container mouth neck engaging wall, the mouth neck fitted to the container mouth neck engaging wall A flexible container in the form of a tube or a bottle made of a soft material to be combined with the flexible container, and formed of a material having a self-supporting property which fits on a lower end of the skirt wall and surrounds the outer periphery of the container to provide self-supporting property. A container equipped with a cap with a pouring pump, characterized by comprising a combination with an outer cylinder. 3. A cap with a pouring pump according to claim 1.
And a mouth-neck on the container mouth-neck engaging wall of the cap with the pouring pump.
The part has a self-supporting peripheral wall that fits, and the inner surface of the peripheral wall
A bob having a bottom wall fitted so as to be able to ascend along the peripheral wall.
The pump is composed of a combination of
The bottom wall rises with the decrease of the inner solution due to
To change the inner volume without deforming the peripheral wall.
Equipped with a cap with a pouring pump
Container.