JP3004811B2 - Creamy container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cream discharge container.

[0002]

[Prior art]

[Problems to be Solved by the Invention]
As shown in the figure, a pump device is provided in the upper part of the container body, and a sliding bottom plate is fitted in the lower part of the body part of the container body. There is known a cream-like material discharge container provided so that a negative pressure in the container body caused by the above-described method is lifted by a sliding bottom plate.

[0003] The above-mentioned conventional discharge container comprises a pump which is composed of a cylinder vertically provided in the container and an operating member with a nozzle which stands upright from the cylinder in an upwardly biased state, and moves the operating member up and down. The cream inside the container is sucked up and discharged into the cylinder, but since the amount that can be discharged by one vertical movement of the operating member is fixed, the desired amount can be taken out unless the operating member is moved up and down several times. There was something I couldn't do.

In order not to have such a drawback, the upper surface of the cream-like material contained in the container is pressurized with a high-pressure gas, and is pushed downward from an aerosol valve provided on the top wall of the container via a stem. When the head is pressed down against the bias, the aerosol valve opens and the cream in the container is discharged from the nozzle of the press-down head through the discharge pipe hanging down from the valve, and the press-down head is released. An aerosol-type container is known in which a stem is raised so as to continue discharging until the aerosol valve is closed. However, the aerosol type container is not preferable because it is expensive and the gas used adversely affects the environment.

The present invention relates to the above aerosol type container,
It is provided so that the pressurization of the creamy substance with high-pressure gas can be performed by using the suction force of the airtight chamber that has been made negative by manual operation, and when the aerosol valve is opened via the stem by pressing down the head, As long as the suction force is not eliminated, the cream in the container is continuously discharged from the nozzle until the aerosol valve is closed due to the rise of the head.

[0006]

A large-diameter cylinder 2 is provided from an outer periphery of a top plate 1 and a discharge cylinder 4 having a small-diameter cylindrical piston 3 is provided at an outer periphery of a lower end from an opening in the center of the top plate 1. Discharger body 9 for fitting head 7 with nozzle to upper end of stem 6 rising from aerosol valve 5 mounted in the upper part of cylinder, large-diameter cylindrical piston 10 fitted in the upper part of large-diameter cylinder 2 A small-diameter cylinder 11 is hung down from the circumference of the small-diameter cylinder, the small-diameter cylindrical piston 3 is fitted into a lower portion of the small-diameter cylinder, and an operating member 19 provided with a container 12 communicating with the small-diameter cylinder 11, At least a part of the operating member is exposed below the large-diameter cylinder 2 to form a gripping cylinder for lowering the operating member, and a backflow prevention device for cream-like material that has entered the small-diameter cylinder 11 from inside the container. Was provided.

In the above-mentioned creamy material discharge container, a cylindrical portion 15 whose lower end face is closed by a bottom plate 14 is hung down from the outer peripheral portion of the large-diameter cylindrical piston 10 to form the cylindrical portion as a container portion 19, and the cylindrical portion is formed.
Into the upper part of 15, a sliding lid 17 that makes the inner and outer peripheral surfaces water-tightly contact the outer surface of the small-diameter cylinder 11 and the inner surface of the cylindrical portion 15 so as to be descendable, and further, a cylindrical portion 15 above the sliding lid and a cylindrical wall portion Outside air intake hole 18
Was drilled.

In the above-mentioned cream-like material discharge container, a check valve 25 is provided at a communicating portion between the lower end of the small-diameter cylinder 11 and the container portion 2, and the check valve is used to reverse the flow of the cream-like material sucked into the small-diameter cylinder. It was a prevention device.

[0009]

When the operating member 19 is lowered from the large-diameter cylinder 2 as shown in FIG. 1 from the state in which the large-diameter cylindrical piston 10 is in the upper portion of the large-diameter cylinder 2, as shown in FIG. The inside of the container becomes negative pressure, and the inside of the small-diameter cylinder 11 also becomes negative, so that the cream-like material in the container portion 12 enters the small-diameter cylinder 11, and the negative pressure due to the reduction of the cream-like material in the container portion.
The sliding lid 17 fitted to the upper part inside the container part 12 is eliminated by lowering, and the negative pressure in the upper part of the container part due to the lowering of the sliding lid is eliminated by the external air flowing from the external air inlet 18. I do. When the operating member 19 is released from the state shown in FIG. 1, the operating member should be pulled back because the inside of the large-diameter cylinder 2 is in a negative pressure state, but the cream-like material has already been sucked into the small-diameter cylinder 11. Since the sliding lid 17 is also lowered and the sliding lid 17 cannot be raised, the cream-like material in the small-diameter cylinder 11 is pushed into the discharge cylinder 4. When the head 7 is pushed down from this state, the stem 6 is lowered, and then the aerosol valve 5 is opened, and the cream-like substance in the discharge cylinder 4 is discharged through the nozzle 8, and the cream-like substance in the discharge cylinder 4 due to the discharge. Due to the decrease, the operating member 19 rises in the large-diameter cylinder 2, so that the small-diameter cylinder 11 is moved into the small-diameter cylindrical piston 3 at the lower end of the discharge pipe 4.
Is relatively lowered, and unless the head 7 is released and the aerosol valve 5 is closed, the large-diameter cylindrical piston 10
Moves to the upper end of the large-diameter cylinder 2 and continues to discharge the creamy substance in the small-diameter cylinder until the negative pressure state described above is eliminated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a first embodiment shown in FIG. 1 and a second embodiment shown in FIG.
To describe the embodiment, reference numeral 1 denotes a top plate, from which the large-diameter cylinder 2 is suspended from the outer periphery, and a discharge cylinder 4 having a small-diameter cylindrical piston 3 at the lower periphery from the center opening of the top plate. A well-known aerosol valve 5 is mounted in the upper part of the discharge cylinder. The aerosol valve raises the stem 6 in an upwardly biased state, and the head 7 with the nozzle is fitted to the upper end of the stem. The head shown in FIG. 1 is provided so as to discharge the cream-like material from the nozzle 8 as it is, and the head shown in FIG. 2 is for spraying a liquid, all of which are well known. The aerosol valve is provided such that when the head 7 is pressed down, the valve hole provided in the lower portion of the stem is opened by lowering the stem 6 and the valve hole is closed by raising the stem by releasing the pressing down. Therefore, the description is omitted.

A large-diameter cylindrical piston 10 is fitted into the upper portion of the large-diameter cylinder 2 of the discharger main body 9. The small-diameter cylinder 11 is suspended from the inner periphery of the piston, and the small-diameter cylindrical piston 3 described above is fitted into the lower part of the small-diameter cylinder. Further, the lower end of the small-diameter cylinder 11 is communicated with the container 12.

In each of the embodiments shown in FIGS. 1 and 2, a flange-shaped top wall 13 is fixed to the lower surface of the inward flange of the large-diameter cylindrical piston 10, and the small-diameter cylinder 11 and the lower end face are connected to the bottom plate from the inner and outer circumferences of the top wall.
The cylindrical part 15 closed by 14 was hung down, and the container part 12 was formed by the cylindrical part with the bottom plate. From the lower part of the cylindrical portion, a knob tube 16 which also serves as a peripheral wall holding tube rising from the outer periphery of the bottom plate 14 via an outward flange is hung, and by pulling down the knob tube, as shown in FIG. Then, the large-diameter cylindrical piston 10 can be pulled down to below the large-diameter cylinder, so that the inside of the large-diameter cylinder can be used as a negative pressure chamber. The large-diameter cylindrical piston, the small-diameter cylinder and the container form an operating member 19. The outer surface of the small-diameter cylinder 11 and the cylinder 15
The sliding lid 17 that makes the inner and outer peripheral surfaces water-tightly contact the inner surface thereof is fitted so that it can be lowered and cannot be raised. The sliding lid is formed by attaching short tubular portions to both inner and outer peripheral edges of the flange-shaped plate.
In order to prevent the sliding lid 17 from rising, a metal claw may be provided for preventing the sliding as described in Japanese Utility Model Application Laid-Open No. 3-32050. A plurality of projecting ridges may be provided so that the upper end of the short tubular portion comes into contact with the lower surface of the projecting ridge so as to be unable to ascend. Further, a check valve may be provided at the lower end of the small-diameter cylinder as in the embodiment shown in FIGS. 3 and 4 described later. An outside air suction hole 18 is formed in the cylindrical wall of the cylindrical portion 15 above the sliding lid 17.

FIG. 3 shows a third embodiment in which the container portion 12 is provided below the large-diameter cylinder 2, and the bottom wall 12a extends from the outer periphery to the peripheral wall.
A lid 22 hanging down from a top wall 20 to a fitting wall 21 is screwed on the upper part of the container portion 12 formed by erecting the upper end 12b in an airtight manner. The large-diameter cylindrical piston 10 is fixed to the upper end of the cylindrical portion by erecting the cylindrical portion 23 from the portion. Further, a through hole 24 communicating with the inside of the container portion 12 is formed in a top wall portion surrounded by the small-diameter cylinder 11 and closed with a check valve 25. In the illustrated example, a disc-shaped valve body 26 shown in FIG. 5 is fixed on a flange-like top wall portion around the through-hole, and a valve plate 27 formed by cutting the central portion of the valve body into a C-shape. Although the upper surface of the through-hole is closed, another check valve may be used. A sliding lid 17 is fitted in the lower part of the container part 12 so as to be liftable, and the bottom wall 12a
Is provided with an outside air suction hole 18. In the case of this embodiment,
Since the check valve 25 prevents the cream-like substance from entering the small-diameter cylinder 11 from flowing back, the sliding lid 17 does not need to be provided with metal claws or the like for preventing the sliding lid 17 from descending.

In this embodiment, a check valve 28 is provided on the outer peripheral portion of the top plate 1 so that the large-diameter cylindrical piston 10 is inserted into the large-diameter cylinder 2.
Is easy to fit. In the embodiment, the operating member
19 can be lowered in the container section 12.

FIG. 4 shows an embodiment in which the container 12 of FIG. 3 is a tube container. In the case of this embodiment, the body
Since 12c is transformed into a squeezed state as the cream is reduced, a sliding lid is not required. Prevention of the backflow of the creamy substance entering the small-diameter cylinder is performed by a check valve 25 provided in the same manner as in the embodiment of FIG. In this embodiment, the operating member 19
Can be lowered by the outer peripheral wall 22a of the lid 22.

[0016]

According to the present invention, the operating member 19 is lowered with respect to the discharger main body 9 and the head 7 is pressed down from this state. The discharge of the creamy substance can be continued, and the discharge can be stopped by releasing the head, so that there is no trouble of moving the operating member up and down many times as in the conventional pump type discharge container, In addition, since the pressure inside the large-diameter cylinder 2 is reduced by lowering the operating member 19, and a cream-like substance is discharged using a force for pulling back the operating member in order to eliminate the negative pressure state, the conventional method is used. No special gas is required as in the case of an aerosol-type discharge container, and therefore there is no fear of adverse effects due to the release of the gas.

As described in the second aspect, a cylindrical portion 15 whose lower end surface is closed by a bottom plate 14 is hung down from the outer peripheral portion of the large-diameter cylindrical piston 10, and the cylindrical portion with the bottom plate is used as a container portion to discharge. The entire length of the container can be shortened, and the container can be downsized.

According to the third aspect of the present invention, the check valve 25 is provided at the communicating portion between the lower end of the small-diameter cylinder 11 and the container portion 12, thereby simplifying the backflow prevention device for the cream-like material sucked into the small-diameter cylinder. In addition, the backflow can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of the discharge container of the present invention, in a state where an operation member is lowered.

FIG. 2 is a sectional view showing another example.

FIG. 3 is a half sectional view shown as a third embodiment.

FIG. 4 is a side view of a partially cutaway shown as a fourth embodiment.

FIG. 5 is a plan view of a valve body used in the embodiments of FIGS. 3 and 4;

[Explanation of symbols]

 2 Large diameter cylinder 9 Discharger body 11 Small diameter cylinder 19 Operating member

Claims (3)

(57) [Claims] 1. A large-diameter cylinder 2 is provided from an outer periphery of a top plate 1 and a small-diameter cylindrical piston 3 is provided from an opening at the center of the top plate 1 to an outer periphery at a lower end.
And a discharge cylinder 4 having a nozzle 7 attached to an upper end of a stem 6 rising from an aerosol valve 5 mounted in the upper part of the discharge cylinder.
Then, the small-diameter cylinder 11 is suspended from the inner periphery of the large-diameter cylindrical piston 10 fitted into the upper part of the large-diameter cylinder 2, and the small-diameter cylindrical piston 3 is fitted into the lower part of the small-diameter cylinder. And an operating member 19 provided with a container portion 12 communicating with the small-diameter cylinder 11, and a gripping cylinder portion for lowering the operating member by exposing at least a part of the operating member below the large-diameter cylinder 2. A cream-like material discharge container, further comprising a backflow prevention device for the cream-like material entering the small-diameter cylinder 11 from inside the container part. 2. A cylindrical part 15 whose lower end face is closed by a bottom plate 14 is hung down from the outer peripheral part of the large-diameter cylindrical piston 10.
19, and into the upper part of the cylindrical part 15, a sliding lid 17 that makes both the inner and outer peripheral surfaces of the small-diameter cylinder 11 and the inner surface of the cylindrical part 15 watertight is fitted so as to be able to descend. 2. The cream-like material discharge container according to claim 1, wherein an outside air suction hole 18 is formed in a cylindrical wall portion of the cylindrical portion 15. 3. A check valve 25 is provided at a communicating portion between the lower end of the small-diameter cylinder 11 and the container 2, and the check valve is used as a device for preventing a cream-like substance sucked into the small-diameter cylinder from flowing back. The cream-like material discharge container according to claim 1, characterized in that: