JPH0733896Y2 - Liquid ejector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION “Industrial use” The present invention relates to a liquid ejector provided to eject liquid cosmetics, for example. The liquid ejector referred to in the present invention includes an ejector which is provided so as to eject the liquid as a liquid, as a mist, or as a bubble, and it is necessary to change a head having an ejection hole. You can change them into a spout.

"Prior Art" For example, a liquid ejector disclosed in Japanese Utility Model Laid-Open No. 64-25366 is known. The liquid ejector includes a cylinder having a suction valve in a bottom portion for attaching the upper end portion to the mouth neck portion of the container body and hanging the upper end portion into the container body, and a cylindrical shape fitted into the cylinder in an upwardly biased state. A stem is erected from the piston to the outside of the cylinder, and an operating member for fitting a head with an ejection hole is fitted to the upper end of the stem, and a discharge valve is provided in the upper end of the stem to lower the operating member with respect to the cylinder. The liquid in the cylinder opens the discharge valve and is ejected from the ejection hole, and when the operating member rises from the closed state of the discharge valve, the suction valve opens to suck the liquid in the container into the cylinder.

The above is a manual liquid ejector, but when the inside of the container is pressurized with gas and the head at the upper end of the short tube that stands up in a biased state from the aerosol valve fixed in the container head is pushed down, the aerosol is generated. There is known an aerosol type liquid ejector in which a valve is opened so that liquid in a container is ejected from an ejection hole of a head through the valve and a short pipe.

"Problems to be solved by the device" The aerosol type liquid ejector is extremely convenient because the liquid can be ejected by simply pushing down the head with the fingers of the hand holding the ejector. Manual liquid ejectors have received renewed attention as gas has a negative impact on the natural environment.

However, in the conventional manual liquid ejector, the liquid is ejected by pressing down the entire actuating member against the urging force, and therefore a force is required to press the liquid.

The present invention removes the spring for pushing up the operating member of this type of manual liquid ejector to facilitate the pushing down of the operating member, and is used in the conventional aerosol type liquid ejector at the upper end of the operating member. By installing an aerosol type valve device with a pressing head, it is possible to open the valve as a discharge valve and press down the operating member at the same time, and to prevent negative pressure inside the container due to liquid ejection when the operating member rises. The outside air enters into the container body, and the outside air inflow passage is closed when the operating member descends.

"Means for Solving the Problem" A container body 1 for erecting a mouth / neck portion 2, and an upper end portion attached to the mouth / neck portion, and a cylindrical portion is hung vertically inside the container body. And a cylinder 5 that hangs a suction pipe 15 from a suction valve 14 provided on the inner surface of the bottom of the cylindrical portion of which the lower portion is a small diameter portion 11, and a cylinder fitted in the small diameter portion 11 so as to be vertically movable. Stem 17 standing upward from the piston 16
The upper end portion of the enlarged diameter portion 18, the operating member 29 provided with the aerosol type valve device 20 with the head 19 in the enlarged diameter portion,
It consists of an annular seal member 31 fitted in a gap between the outer surface of the stem and the inner surface of the large diameter portion 10 so as to be vertically movable, and an annular seal member removal preventing stopper 7b is provided at the upper end of the large diameter portion 10. An annular seal member 31 is movably provided between the lower end of the large diameter portion and the stopper 7b in accordance with the vertical movement of the stem 17, and the annular seal member has a large diameter while being positioned at the inner lower end of the large diameter portion. In a state where the outside air suction hole 12 formed in the lower cylinder wall of the portion 10 is sealed and is located at the upper end of the large diameter portion, the container body is provided through the groove 13 and the outside air suction hole 12 provided on the inner surface of the upper end of the large diameter portion. External air was allowed to flow into 1.

A container body 1 for erecting a mouth / neck portion 2, and an upper end portion attached to the mouth / neck portion so as to vertically hang a tubular portion into the container body 1. An upper portion of the tubular portion is a large diameter portion 10 and a lower portion thereof is A cylinder 5 that hangs a suction pipe 15 from a suction valve 14 provided on the inner surface of the bottom of the tubular portion as a small diameter portion 11, and a cylindrical piston 16 fitted in the small diameter portion 11 so as to be vertically movable upward and outward. Stem to stand up
The upper end of 17 is expanded and an aerosol type valve device 20 with a head 19 is attached to the expanded part, and an outer cylinder 35 is attached to the outer surface of the upper half of the stem, and an annular shape is attached to the lower end of the outer cylinder. A seal member 36 and an operating member 29 fitted in the large diameter portion 10 of the cylinder so as to be movable up and down, and a stopper 7b for preventing the annular seal portion 36 from being pulled out at the upper end of the large diameter portion 10. When the annular seal portion 36 is located at the lower end inside the large diameter portion 10 by pushing down the operating member 29 with respect to the cylinder 5, the outside air suction hole 12 drilled in the lower portion of the large diameter portion 10 is sealed and the inside of the large diameter portion 10 is closed. When located at the upper end, the outside air is allowed to flow into the container body 1 through the groove 13 and the outside air suction hole 12 provided on the inner surface of the upper end of the large diameter portion.

[Operation] In the embodiment shown in FIGS. 1 and 2, when the head 19 is pushed down from the state of FIG. 1, the short pipe 24 of the aerosol type valve device 20 is lowered against the bias of the spring 27. The valve hole 28 is released from the annular valve body 23, and the tubular piston 16 descends in the cylinder small-diameter portion 11, so that the liquid in the small-diameter portion is ejected from the ejection hole 26 of the head 19 and also to the stem 17. The fitted annular seal member 31 is pushed down together with the stem or by the lower surface of the stem expanded portion 18 so that the outside air suction hole 12
To block. Further, by pulling up the actuating member from the lowered state shown in FIG. 2, the liquid in the container is sucked into the small diameter portion 11 of the cylinder, and the annular seal member 31 is also frictionally engaged with the outer surface of the stem or an upward step portion provided at the lower portion of the stem. It is pushed up by the engagement with 17a, so that the stem insertion hole 7a in the top wall of the mounting cylinder 8
The outside air enters the container body through the groove 13 on the inner surface of the large-diameter portion of the cylinder and further through the outside air suction hole 12 to eliminate the negative pressure caused by the decrease of the liquid. In the second embodiment shown in FIG. 3, an outer cylinder 35 is attached to the upper half of the stem to increase the diameter, and an annular seal portion 36 is attached to the lower end thereof in place of the annular seal member 31 in the first embodiment. And has almost the same operation as that of the first embodiment.

[Example] First, the example shown in FIGS. 1 and 2 will be described.
Reference numeral 1 is a container body that stands up the mouth and neck 2.

Inside the container body, the upper end is attached to the mouth and neck, and the cylinder 5 is hung vertically. In the illustrated example, the diameter of the upper portion of the peripheral wall 6 screwed into the neck of the container body is reduced, and the top wall 7 is attached to the upper end of the small diameter portion.
Is provided horizontally, and a cylindrical portion 9 standing upright from the outer peripheral edge of the flange attached to the upper end of the cylinder is fitted to the inner surface of the small diameter portion. The mounting cylinder is formed integrally with the cylinder. Good. The upper part of the cylinder part is the large diameter part 10,
In addition, the lower portion thereof is the small diameter portion 11. An outside air suction hole 12 is bored in the lower part of the large diameter portion, and a groove 13 as an outside air suction passage is provided in the upper inner surface. A suction valve 14 is provided on the inner surface of the bottom of the tubular portion, and a suction pipe 15 is hung from the suction valve.

A cylindrical piston 16 is fitted in the small-diameter portion 11 of the cylinder, and the stem 17 is erected upward and outward from the cylindrical piston through an insertion hole 7a formed in the top wall of the mounting cylinder, The diameter of the upper part of the stem is expanded, and an aerosol type valve device 20 with a head 19 is provided in the expanded diameter part 18. The valve device may be one normally used in aerosol liquid ejectors. In the illustrated example, a cylindrical body fitted to the outer surface of the expanded diameter portion of the stem
An inward flange 22 that projects from the inner surface to the lower surface in contact with the upper surface of the expanded diameter portion 22 has an annular valve body 23 made of a soft material fixed to the inner surface thereof, and a short pipe 24 having a bottom is inserted through the annular valve body, and a bottom plate 25 thereof is provided. The outward flange formed on the outer circumference is engaged with the lower surface of the annular valve body, and the head 19 with the ejection hole 26 is fitted to the upper end of the bottomed short pipe, and compressed between the inward flange 22 and the lower surface of the head. spring
The head and the bottomed short pipe are urged upwards via 27,
A valve hole 28 drilled at the bottom of the bottomed short pipe by pushing down the head.
Is disengaged from the inner surface of the annular valve body, the stem hole and the ejection hole 26 communicate with each other, and the head is released to raise the bottomed short tube and the valve hole 28 is sealed by the annular valve body 23. Is.

An actuating member 29 is formed by the cylindrical piston 16, the stem 17, and the aerosol type valve device with a head described above.

An annular seal member 31 is slidably fitted on the outer surface of the stem, and the member is provided so as to move up and down within the large diameter portion 10 of the cylinder 5. After moving up and down by frictional engagement with the member stem, its upper end contacts the stopper 7b formed by the inner peripheral edge of the mounting cylinder top wall, and its lower end contacts the lower end of the large diameter portion 10, the stem It may be provided so as to stop relative to it, or it may be provided so that the upward stepped portion 17a provided at the lower portion of the stem 17 pushes up the lower end, and the lower surface of the stem expanded portion 18 pushes down the upper end to move up and down. Good.

In the second embodiment shown in FIG. 3, the outer cylinder 35 is hung from the lower end of the stem expanded portion 18 to the stem middle portion, and an annular seal portion 36 is attached to the lower end to close the lower end surface of the outer cylinder. ing.
In the case of this embodiment, the annular seal portion 36 is formed as part of the actuating member and moves up and down together with the actuating member. The structure of the ejector for the other parts is almost the same as that of the first embodiment.

[Advantages of the Invention] The present invention is configured as described above, and since it does not have a spring for urging the operating member upward, which is conventionally used, the pressing force of the operating member can be reduced, and when the operating member is at the lower limit. The annular seal member 31 to the annular seal portion 36 allow the outside air suction hole
When 12 is closed and at the upper limit, it is provided so that the outside air can flow into the container, so that the operating member is pulled up only when liquid is sucked into the cylinder and is positioned at the lower limit after the liquid in the cylinder is ejected. Since the discharge valve is an aerosol type valve device that prevents the valve from opening unless the head is pushed down, even if the container body collapses when not in use, its outside air suction hole 12 and ejection hole are provided.
Without leaking liquid from 26 etc., the diameter of the upper end of the stem was expanded and an aerosol type valve device 20 with a head was attached inside the stem, so by pressing down the head the valve was opened as a discharge valve and the operating member 29 was pressed down. Can be combined.
Also, the upper part of the cylinder is designated as the large diameter portion 10 and the stem 17
Since the annular seal member 31 fitted to the above or the annular seal portion 36 attached to the lower end of the outer cylinder of the upper half of the stem is provided so as to move up and down, the rattling of the stem with respect to the cylinder can be prevented. By making the annular seal member 31 slidable with respect to the stem as in claim 1, the stroke can be shortened, and therefore, the cylinder can be made compact by shortening the length of the large diameter portion of the cylinder. Can be transformed.
By attaching the outer cylinder to the upper half of the stem and attaching the annular seal portion 36 to the lower end of the stem as in claim 2, it is possible to further reduce the backlash when the operating member moves up and down with respect to the cylinder. Therefore, the vertical movement operation of the operating member becomes reliable.

[Brief description of drawings]

FIGS. 1 and 2 show a first embodiment of the liquid ejector of the present invention. FIG. 1 shows the operating member at the upper limit, and FIG. 2 shows the lower limit. FIG. 3 is a cross-sectional view of each, and FIG. 3 is a cross-sectional view in a state in which the operating member is located at the upper limit shown in the second embodiment. 5 ... Cylinder, 20 ... Aerosol type valve device 29 ... Actuating member, 31 ... Annular seal member 36 ... Annular seal part

Claims (2)

[Scope of utility model registration request] 1. A container body 1 for erecting a mouth / neck portion 2, and an upper end portion attached to the mouth / neck portion for vertically arranging a tubular portion into the container body. From the cylinder 5 that hangs the suction pipe 15 from the suction valve 14 provided on the inner surface of the bottom of the small diameter portion 11 as the small diameter portion 11 and the cylindrical piston 16 that is vertically movably fitted into the small diameter portion 11. An upper end portion of the stem 17 standing upward and outward is an enlarged diameter portion 18, an operating member 29 provided with an aerosol type valve device 20 with a head 19 inside the enlarged diameter portion, the stem outer surface and an inner surface of the large diameter portion 10. The annular seal member 31 is fitted in the gap so that it can move up and down, and a stopper 7b for preventing the annular seal member from pulling out is provided at the upper end of the large-diameter portion 10 to prevent the stopper 7b from the lower end of the large-diameter portion.
In the meantime, the annular seal member 31 is movably provided in accordance with the vertical movement of the stem 17, and the annular seal member is formed in the lower cylindrical wall of the large diameter portion 10 while being positioned at the inner lower end of the large diameter portion. In the state where the outside air suction hole 12 is closed and located at the upper end of the large diameter portion, the outside air can flow into the container body 1 through the groove 13 and the outside air suction hole 12 provided on the inner surface of the upper end of the large diameter portion. A liquid ejector characterized in that. 2. A container body 1 for erecting a mouth / neck portion 2, and an upper end portion attached to the mouth / neck portion so as to vertically hang a tubular portion into the container body 1, the upper portion of the tubular portion being a large diameter portion 10, And the lower part is the small diameter part 11
As a cylinder 5 which hangs a suction pipe 15 from a suction valve 14 provided on the inner surface of the bottom of the cylindrical portion, and a cylindrical piston 16 which is fitted in the small diameter portion 11 so as to be vertically movable, stands up and out. The diameter of the upper end of the stem 17 is expanded and the head is placed inside the expanded portion.
An aerosol type valve device 20 with 19 is attached, an outer cylinder 35 is further attached to the outer surface of the upper half of the stem, and an annular seal portion 36 attached to the lower end of the outer cylinder is vertically moved into the large diameter portion 10 of the cylinder. And the actuating member 29 fitted as much as possible.
A stopper 7b for preventing the annular seal portion 36 from being pulled out is provided at the upper end portion of the large diameter portion 10 when the annular seal portion 36 is located at the inner lower end of the large diameter portion 10 by pushing down the operating member 29 with respect to the cylinder 5. When the outside air suction hole 12 drilled in the lower part is sealed, and when it is located at the upper end inside the large diameter portion, it enters the container body 1 through the groove 13 and the outside air suction hole 12 provided on the inner surface of the upper end portion of the large diameter portion. A liquid ejector characterized by being formed so that outside air can flow in.