JP3623584B2 - Liquid ejection container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid ejection container.
[0002]
[Prior art]
Some liquid ejection containers can be sprayed in the same manner as an aerosol container without the need for a pressurizing gas such as chlorofluorocarbon gas. For example, there is one described in Japanese Patent Publication No. 54-25245. In this container, a cap-shaped member is rotatably attached to the upper part of a container body having a cylindrical chamber in the upper half and a liquid tank in the lower half, and a liquid pressurizing chamber with a check valve in the center of the lower part of the cylindrical chamber The suction pipe is suspended from the check valve wall of the pressurizing chamber into the liquid tank, and is fitted into the cylindrical chamber so as to be able to rotate and move up and down and is always urged downward by a coil spring. A cylindrical sliding member is provided, and a piston provided in the lower part thereof is fitted into the liquid pressurizing chamber, and a liquid passage drilled in the center of the piston is connected to a valve provided in the upper center of the cap-like member. A flexible tube is provided, and a head with an ejection hole that is pushed down to open the valve is attached to the upper end of the valve so as to be pushed down.
[0003]
In addition, the inner cylinder outer surface suspended from the top wall of the cap-shaped member and the inner surface of the cylindrical portion of the sliding member are provided with splines for vertically guiding the sliding member, and the inner surface of the cylindrical chamber and the outer surface of the cylindrical portion of the sliding member. A converting means for changing the rotational force of the cap-like member to the ascending force of the sliding member is provided therebetween.
[0004]
Then, by rotating the cap-shaped member, the sliding member rises against the elastic force of the coil spring, and the liquid in the liquid tank is sucked up through the check valve into the pressure chamber, and then the head When the pressure is depressed, the liquid in the pressurizing chamber is ejected from the ejection hole of the head through the flexible tube.
[0005]
[Problems to be solved by the invention]
The container is an excellent one that can be sprayed like an aerosol container using these gases without using the chlorofluorocarbon gas for pressurization, which has been a problem when the ozone layer is destroyed. Therefore, the structure is relatively complicated, and the manufacturing is complicated, for example, accuracy is required.
[0006]
In addition, since the fluid passage drilled in the center of the piston and the valve provided on the cap-like member are connected by a flexible tube, there is no possibility that the tube will be bent and closed for repeated use. .
[0007]
Further, in this container, when liquid is ejected from the ejection hole, no consideration is given to achieving good liquid drainage in order to prevent liquid dripping from the ejection hole at the end of the ejection. Also, no consideration is given to preventing leakage of the stored liquid when the container is accidentally tilted.
[0008]
In the present invention, in order to eliminate the disadvantages of the conventional containers described above, with a relatively simple structure, spraying like an aerosol container can be performed, and its dispensing operation can be performed smoothly and easily, and prevention of liquid dripping, The present invention proposes an excellent container that prevents liquid leakage when the container falls.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the container according to the first aspect of the present invention extends the flange 10 inwardly from the container body 2 with the mouth-and-neck portion 8 upright and the upper end edge of the mounting cylinder 9 fitted to the outer periphery of the mouth-and-neck portion. At the same time, the lower part of the cylinder 12 connected to the inner peripheral edge of the flange is suspended to the upper part of the container body, and the threaded cylinder 13 is erected from the upper surface of the flange, and is screwed to the outer periphery of the threaded cylinder 13. The top wall 22 extends from the upper end edge of the peripheral wall 21, and the cap-like member 4 in which the lower end of the pouring cylinder 23 having an upper end opened at the center of the top wall 22 is suspended to the center of the cylinder communicates with the upper end of the pouring cylinder 23. The valve member 5 is formed by fitting a head 42 with an ejection hole 41 to the upper end of a push-down valve 40 that is fixed to the cap-like member 4 and an outer peripheral surface on the inner surface of the cylinder, and an inner surface on the outer surface of the dispensing cylinder 23. Each surface can be liquid-tight and slidable The annular piston 6 that is fitted and is always urged downward by the coil spring 35 and is locked to the upper surface of the locking portion 24 that is erected at the outer peripheral separation position of the lower end of the extraction tube 23, and the lower end of the cylinder The liquid jet container is characterized by comprising a suction pipe 16 that hangs down to the lower part of the container body through a suction valve 15 provided in the section.
[0010]
According to a second aspect of the present invention, there is provided a container in which a recess 20 is provided in a lower portion of the inner periphery of the cylinder 12 and the liquid tightness between the annular piston 6 and the cylinder 12 is released in the recess 20 portion. The liquid ejection container according to Item 1 was configured.
[0011]
In the container of the present invention, the inner peripheral edge of the valve plate 31 projecting inwardly and obliquely downward from the upper part of the inner surface of the screw cylinder 13 is airtight on the outer surface of the cylinder part 28 extending from the top wall 22 of the cap-like member. The liquid ejection container according to claim 1, further comprising a check valve 30 slidably contacted.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The drawing shows an embodiment of the liquid ejection container 1 of the present invention, and the container 1 includes a container body 2, a cylinder member 3, a cap-shaped member 4, a valve member 5, and an annular piston 6.
[0013]
The container body 2 is formed of a synthetic resin or the like, and is configured such that the neck portion 8 stands up from the upper end of the cylindrical body portion 7.
The cylinder member 3 has a flange 10 extending inwardly from the upper end of the mounting cylinder 9 fitted to the outer periphery of the mouth neck portion 8 by fitting means such as screwing, and the lower surface of the flange 10 is connected to the container via the packing 11. The lower part of the cylinder 12 connected to the upper surface of the neck portion 8 of the body mouth and connected to the inner peripheral edge of the flange is suspended to the upper part of the container body. Further, a screw cylinder 13 is provided upright from the peripheral edge of the upper surface of the flange on the outer side of the cylinder. The flange 10 has a through hole 14 for introducing outside air.
[0014]
A suction pipe 16 suspended from the lower part of the container body is connected to the lower end of the cylinder 12 via a suction valve 15. The suction valve 15 is configured such that a valve seat 18 protrudes from the upper part of the connecting cylinder 17 whose upper end is opened at the center of the bottom wall of the cylinder 12, and a ball valve body 19 is placed on the valve seat 18. Moreover, the suction pipe 16 is liquid-tightly fitted at its upper end to the lower part in the connecting cylinder 17 and its lower end is suspended from the lower part in the container body.
[0015]
Further, a recess 20 is provided at a predetermined position at the lower part of the inner peripheral surface of the cylinder 12, and when the annular piston 6 descends and reaches the position of the recess 20, the outer peripheral surface releases the liquid tightness with the inner surface of the cylinder 12. It is configured as shown. In this embodiment, in order to form the recess 20, the cylinder 12 is configured by fitting the inner cylinder 12 a formed with the recess 20 to the inner surface of the outer cylinder 12 b configured as a part of the cylinder member 3. Yes.
[0016]
The cap-shaped member 4 has a top wall 22 extending from an upper end edge of a peripheral wall 21 whose inner surface is screwed to the outer periphery of the screw cylinder 13, and a lower end of the dispensing cylinder 23 having an upper end opened at the center of the top wall 22. It hangs down to the center bottom.
[0017]
A locking portion 24 is provided standing at the outer peripheral separation position of the lower end portion of the dispensing cylinder 23. In the present embodiment, the locking portion forming member 25 formed as a separate body as shown in FIG. 6 is fitted and fixed to the lower end portion of the extraction tube 23 to form the locking portion 24. The engaging portion forming member 25 has a plurality of circumferentially connecting ribs 27 protruding outward from the lower end of the outer surface of the fitting tube 26 that is fitted and locked to the outer periphery of the dispensing tube 23 via the concave and convex engaging means. The locking portion 24 is erected in a double cylindrical shape from the tip of each rib 27. In addition, this latching | locking part 24 is not only the said cylindrical thing, It is a rod-shaped latching | locking part standing in multiple numbers by the circumferential direction via the flange or the connection rib etc. in the lower end part outer periphery separation position of the extraction | pouring cylinder 23. Well. Further, a cylindrical one as described above may be provided with a plurality of circumferentially cut grooves.
[0018]
Further, a cylindrical portion 28 suspended from the rear surface of the peripheral edge of the top wall 22 is slidably fitted to the outer periphery of the upper portion of the cylinder 12, and a concave groove for communicating the inside of the cylinder with the outside of the cylinder is formed on the inner surface of the cylindrical portion 28. 29 is drilled. Further, a check valve 30 for introducing outside air is provided between the inner surface of the screw cylinder 13 and the outer surface of the cylinder portion 28, so that outside air can be introduced and liquid leakage is prevented. The check valve 30 has an inner peripheral lower end edge of a valve plate 31 protruding obliquely inwardly downward from an inner peripheral upper end of the screw cylinder 13 and abutting the outer periphery of the cylindrical part 28 in an airtight and slidable manner. The outside air can be introduced into the container body from the check valve 30 through the through hole 14, and the reflux liquid flowing out from the cylinder through the concave groove 29 does not leak to the outside of the container. It is configured as follows. In this embodiment, as shown in FIG. 5, the check valve forming member 33 having the valve plate 31 protruding from the inner surface of the base cylinder 32 is placed in a concave groove 34 which is laterally provided on the upper end of the inner surface of the screw cylinder 13 of the cylinder member 3. The base tube 32 is fitted and configured.
[0019]
The annular piston 6 is fitted with an outer peripheral surface on the inner surface of the cylinder 12 and an inner peripheral surface on the outer surface of the dispensing cylinder 23 in a liquid-tight and slidable manner, and is interposed between the cap-shaped member top wall 22. The spring 35 is always urged downward, and the lower surface is locked to the upper surface of the locking portion 24. In this embodiment, as shown in FIG. 6, the cylindrical inner sliding portion 36 and the outer sliding portion 37 are connected by an annular connecting plate 38, and a protrusion 39 protrudes from the lower surface of the connecting plate 38. Set up and configured.
[0020]
The valve member 5 is configured by fitting a head 42 with an ejection hole 41 to the upper end of a push-down valve 40 that is communicated with the upper end of the dispensing cylinder 23 and fixed to the cap-like member 4. The valve 40 has a fitting cylinder 43 at the lower end fitted in a liquid-tight manner at the upper end of the dispensing cylinder 23, and a stem 44 is provided so as to be pushed down from the upper end in an upwardly biased state. What has the well-known discharge valve mechanism which opens a valve by pushing down the stem 44 is used. Further, the peripheral wall 46 is screwed onto the outer periphery of the support cylinder 45 erected from the upper surface of the cap-shaped member top wall 22, and the fixed cap 48 is configured such that the peripheral edge of the upper surface of the valve 40 is pressed and locked by a flange 47 extending from the upper edge of the peripheral wall. Thus, the valve member 5 is fixed to the cap-shaped member 4.
[0021]
When using the container constructed as described above, first, the state shown in FIG. 1 (this state is a state in which the liquid is filled in the dispensing cylinder 23 and the lower part of the piston 6 in the lowered state in advance in the initial operation. When the cap-shaped member peripheral wall 21 is screwed up, the pressure in the cylinder 12 becomes negative, and the liquid in the container passes through the suction pipe 16, opens the suction valve 15, and is sucked up into the cylinder 12. At this time, the locking portion 24 pushes up the piston 6 while rotating. (State of FIG. 2)
[0022]
Next, the peripheral wall 21 is screwed down to return the cap-shaped member 4 to its original state. At this time, since the cylinder 12 below the annular piston 6 is filled with liquid, the piston 6 remains in the upward biased state (the state shown in FIG. 3).
[0023]
When the head 42 is pushed down from this state, the valve 40 is opened, and the liquid in the cylinder is pressurized by the downward biasing force of the spring, so that the liquid in the cylinder passes through the dispensing cylinder 23 and passes through the valve 40. From the ejection hole 41 of the head 42.
[0024]
When the annular piston 6 is lowered and brought into contact with and locked to the upper surface of the locking portion 24, the ejection of the liquid from the ejection hole 41 stops. At this time, the annular piston 6 reaches the position of the concave portion 20 in the cylinder 12, and the inside of the cylinder above and below the piston communicates and the inside of the cylinder is depressurized. No dripping from the hole occurs.
[0025]
In addition, each said member is mainly formed with a synthetic resin, and it is good to form using other materials, such as a metal and an elastomer, as needed.
[0026]
【The invention's effect】
As described above, the container of the present invention has a top wall extending from the cylinder member in which the lower part of the cylinder hangs down to the upper part of the container body, and the upper edge of the peripheral wall screwed to the outer periphery of the cylinder of the cylinder member. And a cap-like member in which the lower end of the dispensing cylinder that is open to the center of the cylinder is suspended, and the outer peripheral surface is fitted on the inner surface of the cylinder and the inner circumferential surface is fitted on the outer surface of the dispensing cylinder in a liquid-tight and slidable manner. An annular piston that is constantly urged downward by a coil spring and that has a lower surface locked to an upper surface of a locking portion that is erected at the outer periphery separation position of the lower end portion of the extraction tube, and is communicated with the upper end of the extraction tube Since it has a valve member made by fitting a head with an ejection hole to the upper end of a fixed push-down valve, the cap-like member is screwed up, then screwed down, and the head is pushed down. Aerosol container Fog are possible, moreover, to transmit directly to the annular piston threadedly increase of the cap-like member via an engagement portion, in which allows wicking of reliable and smooth liquid. Furthermore, the structure is extremely simple, easy to assemble, and has the advantage of being inexpensively manufactured.
[0027]
Further, in addition to the above effect, in addition to the above effects, a recess is provided in the lower part of the inner peripheral surface of the cylinder, and the liquid tightness between the annular piston and the cylinder is released in the recess. There is no inconvenience such as the liquid draining and the liquid dripping and soiling the outer surface of the container.
[0028]
Furthermore, in the case where a check valve is provided between the screw cylinder of the cylinder member and the cylinder portion of the cap-like member, the inside of the container after liquid ejection is not negatively charged due to the introduction of outside air, and Even if the container is accidentally tilted, there is no inconvenience such as leakage of the liquid in the container to the outside.
[Brief description of the drawings]
FIG. 1 is a half sectional view of an essential part showing an embodiment of the present invention.
FIG. 2 is a half sectional view of the main part of the cap-like member ascending in the embodiment.
FIG. 3 is a partial cross-sectional view of the main part when the liquid is sucked into the cylinder of the same embodiment and then rotated in the direction opposite to the sucking direction to be in a pressurized state.
FIG. 4 is a half sectional view of the main part showing a liquid ejection state of the same embodiment.
FIG. 5 is a cutaway exploded perspective view of the cylinder member of the same embodiment.
FIG. 6 is an exploded perspective view of the cap-shaped member of the same embodiment, which is cut away.
[Explanation of symbols]
2 ... container body, 3 ... cylinder member, 4 ... cap-like member, 5 ... valve member,
6 ... annular piston, 8 ... neck and neck, 9 ... mounting cylinder, 10 ... flange,
12 ... Cylinder, 13 ... Screw, 15 ... Suction valve, 16 ... Suction pipe,
20 ... concave portion, 21 ... peripheral wall, 22 ... top wall, 23 ... dispensing cylinder, 24 ... locking part, 28 ... cylindrical part,
30 ... Check valve, 31 ... Valve plate, 35 ... Spring, 40 ... Valve, 41 ... Ejection hole,
42 ... Head

Claims (3)

A flange 10 is extended inwardly from the upper end edge of the mounting cylinder 9 fitted to the outer periphery of the mouth-and-neck part, and the lower part of the cylinder 12 connected to the inner peripheral edge of the flange is placed in the container. A top wall 22 is extended from the upper end edge of the cylinder member 3 that is suspended from the upper surface of the body and has a screw tube 13 standing from the upper surface of the flange, and the peripheral wall 21 that is screwed to the outer periphery of the screw tube 13. 22 is a cap-shaped member 4 having a lower end of a dispensing cylinder 23 having an upper end opened at the center thereof, and a push-down valve that is fixed to the cap-shaped member 4 in communication with the upper end of the dispensing cylinder 23. The valve member 5 is formed by fitting a head 42 with an ejection hole 41 at the upper end of the 40, and the outer peripheral surface is fitted on the inner surface of the cylinder, and the inner peripheral surface is fitted on the outer surface of the dispensing cylinder 23 in a liquid-tight and slidable manner. By coil spring 35 Through an annular piston 6 that is always urged downward and locked to the upper surface of the locking portion 24 that is erected at the outer peripheral separation position of the lower end portion of the dispensing cylinder 23, and a suction valve 15 that is provided at the lower end portion of the cylinder. And a suction pipe 16 suspended at the bottom of the container body. 2. A liquid ejection container according to claim 1, wherein a recess 20 is provided in an inner peripheral lower portion of the cylinder 12, and the liquid tightness between the annular piston 6 and the cylinder 12 is released in the recess 20 portion. Reversely, the inner peripheral edge of the valve plate 31 projecting inwardly and obliquely downward from the upper surface of the inner surface of the screw cylinder 13 is brought into airtight and slidable contact with the outer surface of the cylinder part 28 suspended from the top wall 22 of the cap-like member. The liquid ejection container according to claim 1, further comprising a stop valve 30.

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