JPH0439191Y2 - - Google Patents

Description

[Detailed explanation of the idea] "Industrial application field" This case concerns a cream-like substance dispensing container.

"Prior art" For example, as shown in Japanese Utility Model Application Publication No. 57-44041,
The diameter of the upper end of the body provided in a cylindrical shape is reduced, the nozzle is projected forward from the middle of the small diameter portion, and a lower partition wall is provided horizontally on the inner surface of the small diameter portion where the lower end of the nozzle hole is located. A container body with a through hole bored in the rear part of the wall, and a container fitted into the lower part of the body of the container, with the outer periphery in airtight contact with the inner wall surface of the body, and capable of rising by creating a negative pressure inside the body. An upper partition wall is fitted to the combined bottom plate and the inner surface of the upper end of the small diameter portion of the body, and a discharge valve and a suction valve are provided at both the front and rear parts of the upper partition wall. A pressurized chamber forming member has the upper surface of a vertical partition wall standing up from the lower partition wall in contact with the lower surface of the upper partition wall, and a peripheral wall is tightly fitted to the outer surface of the upper end of the small diameter portion of the body, and the upper part of the peripheral wall is formed into a dome. When the dome-shaped wall is pushed down, the discharge valve opens and the cream-like substance in the pressurized chamber between the pressurized chamber-forming member and the dome-shaped wall is poured out through the nozzle. At the same time, when the dome-shaped wall is released, the suction valve opens due to the negative pressure in the pressurized chamber, and the creamy substance inside the body is sucked into the pressurized chamber. Containers are known that are designed to eliminate this problem.

"Problems to be Solved by the Invention" As shown in FIG. 4, the conventional suction valve for the container described above has a through hole bored in the partition wall and a cylindrical valve cylinder 21 standing up from the periphery of the hole. A valve plate 11 is formed by protruding inward from a part of the inner surface of the lower end of the cylinder through the connecting part 20, and the valve plate is in a state where the lower surface of the valve plate is positioned horizontally with respect to the valve cylinder. When viewed from above, the outer circumferential surface of the valve plate has a circular shape forming a small gap A between the inner surface of the valve cylinder, and when viewed in the longitudinal section shown in FIG. It has a right triangular shape with a thick tip and the length of the upper side of the triangle is greater than the inner diameter of the valve cylinder 21, and the discharge valve is provided in the opposite direction to the suction valve. In the above valve structure, the inner surface of the valve cylinder wall serves as the valve seat, and the valve plate serves as the valve body, and the connecting portion 20
The valve plate tip descends around the valve plate, and the upper tip of the valve plate connects with the inner surface of the valve cylinder to close the valve, and the valve plate tip rises to open the valve. It is convenient that the valve body and the valve body can be integrally molded from a synthetic resin material. However, due to the necessity of removing the mold, in order to perform the integral molding, it is necessary to make the lower surface of the valve plate horizontal and provide the above-mentioned gap A, as shown by the solid line in Figure 4. Therefore, if the elasticity of the valve plate is insufficient, the valve may not close completely. Furthermore, since the discharge valve is formed in the same manner as the suction valve, the discharge valve tends to close incompletely.

The present invention is designed to eliminate these drawbacks so that both valves can be opened and closed reliably, and the container body can be formed at a low cost.

"Means for Solving the Problems" A container body 1 made of synthetic resin, in which the inner surface of the upper part 4a of a container body 4 provided in a straight cylinder shape is closed with a partition 6, and a suction valve 5 is provided in the partition, and the container body A bottom plate 3 is fitted to the lower part of the body of the body, the outer circumferential part of which is in airtight contact with the inner wall surface of the body part, and can be raised by creating a negative pressure inside the body body, and a peripheral wall 12 is fitted to the upper outer surface of the body 4.
and an elastic cap member 2 that airtightly fits and closes the upper surface of the circumferential wall with an elastic dome 13 that stands up from the discharge passage tube 16 from the side, and an inward flange 17 attached to the upper end of the discharge passage tube 16. A valve shaft 10 whose flange hole stands up from the partition 6
The upper end is sealed to serve as a discharge valve, and the above suction valve is
An inner cylindrical valve cylinder 21 is erected from the periphery of a through hole bored in the partition 6, and a valve plate 11 is protruded inward from a part of the inner surface of the lower end of the valve cylinder through the connecting part 20. The valve plate 11 has a circular shape with the outer peripheral surface of the valve plate forming a small gap A between the inner surface of the valve plate and the inner surface of the valve plate when viewed from above with the upper surface of the valve plate positioned horizontally with respect to the valve cylinder. In addition, when viewed in a longitudinal section passing through the connecting portion and the center of the valve plate, the valve plate has a triangular shape with a thick wall at the tip, and the length of the lower side of the triangle is greater than or approximately the same as the inner diameter of the valve cylinder 21. The valve plate was made to be long, and the valve plate was inclined against the elasticity of the connecting portion 20, so that the tip of the lower surface was brought into pressure contact with the upper inner surface of the valve cylinder 21.

"Operation" The operation for dispensing the stored items is the same as in the conventional example described above, and when the elastic dome 13 is pushed down, the pressure inside the pressurized chamber 7 is increased, and the stored items in the pressurized chamber are disposed between the upper end of the valve shaft 10 and the inward flange 17. is poured out through a discharge valve formed by
Furthermore, when the elastic dome is released, the discharge valve closes, and the elastic dome elastically returns to its original state, so the pressure inside the pressurizing chamber 7 becomes negative.
Therefore, the suction valve 5 formed by the valve cylinder 21 and the valve plate 11 opens to suck the contents stored in the fuselage into the pressurizing chamber. Negative pressure caused by a decrease in the contents stored in the fuselage is resolved by raising the bottom plate 3.

The valve plate 11 is formed in advance as shown in FIGS. 2A and 2B, and its tip is pushed upward against elasticity as shown in FIG. 3. Then, the connecting portion 20 is stretched against elasticity, and the diameter of the lower surface of the valve plate shown in FIG. 2A is longer than the inner diameter of the valve cylinder 21, as well as when the diameter is approximately the same as that shown in FIG. 3A. As shown, the tip of the lower surface of the valve plate comes into pressure contact with the inner surface of the valve cylinder to maintain the valve closed state.

"Embodiment" 1 is a container body made of synthetic resin, and the container body has a straight cylindrical body 4 whose lower end is expanded, and the upper part 4a of the body is a small diameter cylindrical part, and the inner surface of the small diameter cylindrical part is partitioned 6. A through hole is bored in the center of the partition, and a valve cylinder 21 is erected from the periphery of the through hole. protrudes inward from the valve cylinder. The valve plate is first formed as shown in FIGS. 2A and 2B, and then the tip of the valve plate 11 is pushed upward as shown in FIG. 3A.
The tip of the lower surface of the valve plate is brought into pressure contact with the upper inner surface of the valve cylinder 21 mainly by the elastic restoring force of the connecting portion 20. In the state shown in FIG. 2, the upper surface of the valve plate 11 is the valve cylinder 21.
As shown in Figure B,
When viewed from above, the outer circumferential surface of the valve plate has a circular shape that forms a small gap A between the inner surface of the valve cylinder, and as shown in FIG. The plate has a right triangular shape with a thick wall at the tip end, and the length of the lower side of the triangle is larger than or approximately the same length as the diameter of the inner surface of the valve cylinder 21.

From the side of the partition 6, a valve shaft 10 stands up higher than the upper end of the body 4. As shown in the figure, the valve stem 10 and the valve cylinder 2
1, engagement plates 8, 8 may be erected between them. 9
The gap between the engaging plates forms part of the outflow path for the stored items. An engagement protrusion 19 is provided on the outer surface of the lower part of the small diameter cylindrical portion.
is established.

The bottom plate 3 is fitted into the lower part of the body of the container body 1, with the outer peripheral part 23 being in airtight contact with the inner wall surface of the body. The bottom plate upper part 22 has a shape that can be fitted into the lower half of the small-diameter cylinder in the upper part of the container body mentioned above.

An elastic cap member 2 is attached to the upper outer surface of the container body 1.
mate. The member airtightly fits the peripheral wall 12 onto the upper outer surface of the body 4, and the upper surface of the peripheral wall
Elastic dome 13 that stands up the discharge tube 16 from the side
An inward flange 17 is attached to the upper end of the discharge pipe tube, and the flange hole is sealed with the upper end surface of the valve shaft 10 loosely inserted into the discharge pipe cylinder. and the upper end of the valve shaft form a discharge valve. It is preferable that the partition plate 14 hangs down from the continuous part between the elastic dome 13 and the discharge tube.
A communication hole 15 is formed below the partition plate and communicates with the above-mentioned gap 9, thereby communicating the pressure chamber 7 formed in the lower chamber of the elastic dome 13 with the inside of the discharge pipe cylinder 16. Reference numerals 18 and 18 denote support portions attached to both sides of the elastic dome, which are provided to prevent other objects from touching the elastic dome.

"Effect of the invention" The present invention has the above-mentioned configuration, and the suction valve 5 is
A valve cylinder 21 is erected from the periphery of a through hole bored in the inner partition 6, and a valve plate 11 is formed to protrude inward from a part of the inner surface of the lower end of the valve cylinder through the connecting part 20, The valve plate 11 has a circular shape that forms a small gap I between the outer peripheral surface of the valve plate and the inner surface of the valve cylinder when viewed from above with the upper surface of the valve plate positioned horizontally with respect to the valve cylinder 21. When viewed in a longitudinal section passing through the connecting portion 20 and the center of the valve plate, the valve plate has a triangular shape with a thick wall at the tip, and the length of the lower side of the triangle is greater than or approximately the same length as the inner diameter of the valve cylinder 21. Therefore, by using the small gap A as the cutout part,
The valve cylinder and the valve plate 11 can be integrally molded from a synthetic resin material, and after doing so, the tip of the valve plate 11 is pushed upward as shown in FIG. 3A. The lower surface of the tip can be brought into pressure contact with the inner surface of the valve cylinder by the elastic restoration of the connecting portion 20, so that the suction valve 5 can be in a normally closed state. Furthermore, since the discharge valve is formed by the inward flange 17 attached to the upper end of the discharge pipe cylinder 16 and the upper end surface of the valve shaft 10 that seals the flange hole from below, the valve function is reliable and the valve has a simple structure. I can do it.
In addition, since the structure of the container body 1 is complicated only for the suction valve portion described above, and the structure of the other portions is simple, it is easy to mold the entire container body 1 in one piece as long as the suction valve can be molded as one piece as described above. Moreover, since the cap-like member 2 and the bottom plate 8 each have a simple structure, they can be formed at low cost.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of the proposed container, Fig. 2A is an enlarged longitudinal cross-sectional view when the suction valve is formed, Fig. B is a plan view thereof, Fig. 3A is an enlarged view of the main part of Fig. 1, Figure B
4 is a plan view thereof, and FIG. 4 is a vertical sectional view of the suction valve shown in a conventional example.

Claims (1)

[Scope of utility model registration request] A container body 1 made of synthetic resin, in which the inner surface of the upper part 4a of a container body 4 provided in a straight cylinder shape is closed with a partition 6, and a suction valve 5 is provided in the partition; A bottom plate 3 whose outer peripheral portion is in airtight contact with the inner wall surface of the fuselage body 4 and which is fitted so as to be able to rise due to negative pressure inside the fuselage body 4;
and an elastic cap member 2 that airtightly fits and closes the upper surface of the circumferential wall with an elastic dome 13 that stands up from the discharge passage tube 16 from the side, and an inward flange 17 attached to the upper end of the discharge passage tube 16. A valve shaft 10 whose flange hole stands up from the partition 6
The upper end is sealed to serve as a discharge valve, and the above suction valve is
An inner cylindrical valve cylinder 21 is erected from the periphery of the through hole bored in the inner partition 6, and the valve plate 1 is directed inward from a part of the inner surface of the lower end of the valve cylinder via the elastic connection part 20.
1 protrudes from the valve plate 11, and the valve plate 11 forms a small gap I between the outer circumferential surface of the valve plate and the inner surface of the valve cylinder when viewed from above when the upper surface of the valve plate is positioned horizontally with respect to the valve cylinder. It has a circular shape, and when viewed in a longitudinal section passing through the connecting portion and the center of the valve plate, it has a triangular shape with the tip of the valve plate being thicker, and the length of the lower side of the triangle is equal to the length of the valve cylinder 21.
A cream-like product characterized in that the valve plate is larger than or approximately the same length as the inner diameter, and the valve plate is inclined against the elasticity of the connecting portion 20 so that the tip of the lower surface is pressed into contact with the upper inner surface of the valve cylinder 21. Pour container.