JPH10324358A - Dispenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a dispenser mounted at a top portion of a container and capable of ejecting smoothly a liquid even in the case where the container stands upright and even in the case where it is inverted. SOLUTION: This dispenser has a directional control valve 20 for a passage to supply a liquid L in a container 1 to an ejection part 11. The directional control valve 20 for the passage is constituted with an upper cylindrical part 23, a lower cylindrical part 24, both having a large diameter, and a small diameter intermediate cylindrical part 25 disposed therebetween. The valve 20 comprises an outer cylindrical member 21 having an opening 29 for the upper cylindrical part, which is formed in a bottom 26 of the upper cylindrical part, and a piston member 22 consisting of an upper piston platen 30 and a lower piston platen 31, which are respectively connected to an upper and a lower parts of a piston rod 32 penetrating through the inside of the intermediate cylindrical part 25, and which have openings 33, 34, respectively, and capable of moving vertically within the outer cylindrical member 21. It is so designed that, when the container stands upright, the upper piston platen 30 closes the opening 29 for the upper cylindrical part, and that, when the container is inverted, a top portion 27 of the lower cylindrical part closes the lower piston opening 34.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dispenser which is mounted on the top of a container so that the liquid in the container can be smoothly ejected even if the container is erected or inverted.

[0002]

2. Description of the Related Art A fixed amount of a liquid such as a liquid cosmetic, various liquid detergents, a finishing liquid, a fungicide / antiseptic solution, a bleaching liquid, and water in a container is manually injected or sprayed by being mounted on a top of the container. Dispensers that can be used have been widely used. Dispensers are generally classified into the following three types. One is a trigger dispenser which can eject a liquid in a container by pulling / returning a trigger lever. The other is a trigger dispenser which incorporates a propellant in addition to a liquid to be ejected into a container and pushes / presses an ejection button. The aerosol type which can eject the liquid in the container by the pressing force of the propellant by the returning operation, and the three types are the finger press pump type which can eject or spray the liquid in the container by the pushing / returning operation of the ejection head. .

Here, the structure of a general conventional trigger type dispenser is shown in FIG. The trigger dispenser 100 basically injects a pump unit 101, a liquid sending tube 103 for sending the liquid L in a container 102 toward the pump unit 101, and a liquid pressurized by the pump unit 101. It has an injection unit 104 and a trigger lever 105 for manually changing the internal volume of the pump unit 101. The pump unit 101 is usually a corrugated cylinder,
A variable capacity chamber 106 composed of a piston, a cylinder, a diaphragm, or the like, and a suction valve 1 for sucking a liquid therein.
07, and an extruding valve 108 for extruding the liquid L pressurized in the variable capacity chamber 106 toward the ejecting unit 104. The internal volume of the variable capacity chamber 106 is repeatedly set by the trigger operation of the trigger lever 105. It can be increased or decreased. The suction valve 107 and the pressure output valve 108 are usually constituted by ball valves using steel balls 109 and 110, respectively. Further, the liquid sending tube 103 is extended to the bottom of the container so that the liquid L in the container 102 can be jetted without waste.

The trigger dispenser 100 operates roughly as follows. That is, the trigger lever 10
When 5 is pulled, the volume of the variable capacity chamber 106 is reduced by the connecting rod 111 interlocked with it, and the liquid L therein is pressurized. Since the steel ball 109 of the suction valve 107 closes the liquid passage to prevent the liquid L from flowing backward, the liquid L is pushed out toward the injection unit 104 by pushing up the steel ball 110 of the ejection valve 108. The trigger lever 105 is urged in a direction to increase the volume of the variable capacity chamber 106. Then, when the pulling of the trigger lever is loosened, the inside of the variable capacity chamber 106 becomes a negative pressure. At this time, the steel ball 110 of the extruding valve 108 closes the liquid passage and the backflow is prevented. Passes through the liquid supply tube 103 and the steel ball 109 of the suction valve 107.
To be introduced and filled into the variable capacity chamber 106. By repeating this trigger operation, the liquid in the container can be continuously ejected.

[0005]

Since the conventional trigger type dispenser has the above-mentioned structure, it is a principle that a container equipped with the dispenser is used in an upright state. If the trigger is triggered in an inverted state, the steel ball 109 of the suction valve 107 falls down and loses the backflow prevention ability.
Even if the volume of the liquid L is reduced, the liquid L cannot be pumped from the extruding valve 108 toward the nozzle portion 104, so that the liquid L falls down.
Even if a negative pressure is applied to 06, in the inverted state, the tip of the liquid sending tube 103 extending to the bottom of the container 102 protrudes above the liquid surface in the container, so that the liquid cannot be sucked.

Regarding the point that it cannot be used in the inverted state, the same applies to the other two types, that is, the aerosol type and the finger press pump type. In other words, in any case, the liquid supply tube reaches the bottom of the container, so that when the container is inverted, the tip projects into the gas phase in the container, and the liquid can be sent toward the nozzle of the dispenser. Because it is gone.

[0007] However, the container with a dispenser described above, in an actual use scene, for example, sprays a hair material into the inside of the hair or a detergent /
In many cases, such as when disinfectant is sprayed or when it is desired to spray toward the user, it is necessary to incline or invert the container to eject the container. Therefore, there has been a demand for a dispenser that enables a smooth jet when the erect or the inverted. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a dispenser that enables a smooth liquid ejection even when the container is upright or inverted.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to an ejecting unit which is mounted on the top of a container and ejects a liquid, and a passage switching valve which supplies the liquid in the container to the ejecting unit. Wherein the passage switching valve comprises an outer cylinder member, and a piston member which can be moved vertically in a state housed therein, and the outer cylinder member is
Consists of a large-diameter upper cylinder part and a lower cylinder part which communicate with each other coaxially, and a small-diameter intermediate cylinder part arranged in the middle, and an upper cylinder bottom part is formed between the upper cylinder part lower end and the intermediate cylinder part upper end. A lower cylinder top is formed between the lower end of the intermediate cylinder and the upper end of the lower cylinder. The bottom of the lower cylinder is connected to a flexible liquid feed tube extending to the bottom of the container, and the top of the upper cylinder is formed. Is connected to the injection unit, and an upper cylinder opening is formed at the bottom of the upper cylinder and opened at the top in the container, and the piston member can slide in the upper cylinder and the lower cylinder, respectively. The upper piston board and the lower piston board have an upper piston opening and a lower piston opening, respectively. And a liquid passage is formed between the piston rod and the intermediate cylinder,
When the container is erected, the upper piston board closes the upper cylinder opening,
The liquid in the container is sent from the liquid sending tube to the injection section via the lower piston opening, the intermediate cylinder passage, and the upper piston opening, and when the container is inverted, the piston member descends due to its own weight. A dispenser in which the upper cylinder opening is opened, the lower piston opening is closed by the lower cylinder top, and the liquid in the container is sent to the injection unit via the upper cylinder opening and the upper piston opening. I will provide a. The ejection unit is of a trigger type capable of ejecting a liquid in a container by pulling / returning a trigger lever, and includes a variable capacity chamber for changing an internal volume by pulling / returning a trigger lever, and a variable capacity chamber. And a suction valve for sucking the liquid in the container. Alternatively, the ejection unit is an aerosol type capable of ejecting a liquid in a container by an operation of pushing a push / returnable ejection button, and when the ejection button is pushed, a pressing force of a propellant contained in the container is applied. It is preferable to have an injection valve that can inject the liquid in the container.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) A dispenser 10 according to Embodiment 1 schematically shown in FIG.
And a passage switching valve 2 which is attached to the top 2 of the container and ejects the liquid and supplies the liquid L in the container 1 to the ejection unit 11.
0.

The passage switching valve 20 includes an outer cylinder member 21 and
A piston member 22 which is movable in the up and down direction while being accommodated therein is provided. The outer cylindrical member 21 is mounted on the top 2 of the container 1 by means such as screwing.

The outer cylinder member 21 is composed of a large-diameter upper cylinder section 23 and a lower-diameter cylinder section 24 which communicate with each other coaxially, and a small-diameter intermediate cylinder section 25 disposed therebetween. An upper cylinder bottom 26 is formed between the upper end of the intermediate cylinder 25 and a lower cylinder top 27 is formed between the lower end of the intermediate cylinder 25 and the upper end of the lower cylinder 24. The bottom of the lower cylinder 24 is the container 1 Connected at its upper opening 36 to a flexible liquid delivery tube 28 extending to the bottom 3 of the
The top of the upper cylinder 23 is connected to the suction valve 17 of the injection unit 11, and the upper cylinder bottom 26 is formed with an upper cylinder opening 29 that is open at the top inside the container 1.

The piston member 22 has an upper piston plate 30 which can slide in an upper cylindrical portion 23 and a lower cylindrical portion 24, respectively.
It comprises a lower piston board 31 and a piston rod 32 that penetrates through the intermediate cylindrical portion 25 and connects the upper and lower piston boards 30 and 31. The upper piston board 30 and the lower piston board 31 have an upper piston opening 33 and a lower piston opening 34, respectively. A liquid passage 35 is formed between the piston rod 32 and the intermediate cylinder 25.

The relationship between the outer cylinder member 21 and the piston member 22 will be described. When the container 1 is upright,
The upper piston disc 30 abuts the upper cylinder bottom 26 to close the upper cylinder opening 29, and in this state, the lower piston disc 31 does not close the upper opening 36 of the liquid feed tube 28, so that the length of the piston rod 32 is reduced. Has been adjusted. For this reason, at the time of erecting, the liquid L in the container 1 flows from the liquid sending tube 28 to the upper opening 36, the lower piston opening 34, and the liquid passage 3 of the intermediate cylindrical portion.
5 and the intake valve 1 via the upper piston opening 33.
7, and when the container 1 is inverted, the piston member 2
2 is lowered by its own weight, the upper cylinder opening 29 is opened, and the lower piston opening 34 is closed by contact with the lower cylinder top portion 27, and the liquid L in the container 1 is opened by the upper cylinder opening 29 and the upper piston. The liquid is sent to the suction valve 17 via the hole 33.

On the other hand, the injection unit 11 is provided with a trigger lever 13
Is a trigger type which can eject the liquid L in the container 1 by the pulling / returning operation of the variable capacity chamber 16 in which the internal volume is changed by the pulling / returning operation of the trigger lever 13, Suction valve 17 for sucking the liquid
And a nozzle portion 12 for injecting a liquid, and a liquid portion L pressurized in the variable capacity chamber 16 and a nozzle portion 12
And an extruding valve 19 for extruding the fluid to the outside.

The variable capacity chamber 16 is provided with the trigger lever 1
3 has a flexible corrugated cylinder 15 which is expanded and contracted by a connecting rod 14 interlocked with the trigger operation to change the internal volume. Each of the suction valve 17 and the pressure-release valve 19 is provided with a rubber opening / closing plate on the outlet side of a through hole formed on the lower surface, and the liquid passing through the through hole from below is closed by the opening / closing plate. Can be pushed up and distributed,
Even if the liquid above the opening / closing plate is pressurized, the opening / closing plate is in close contact with the through hole, so that the liquid cannot flow backward downward.

Next, the operation when the container 1 with the trigger dispenser 10 is erect and triggered will be described with reference to FIG. When the trigger lever 13 is pulled while the container 1 is upright, the corrugated cylinder 15 is compressed by the connecting rod 14 connected to the trigger lever 13, and the inside of the variable capacity chamber 16 is pressurized. By this pressurization, the liquid already filled in the variable capacity chamber 16 pushes up the opening / closing plate of the extruding valve 19 and is jetted from the jetting unit 12 via the liquid passage 18. At this time, the opening / closing plate of the suction valve 17 is in close contact with the liquid passage, so that backflow in the direction of the container 1 is prevented.

Next, when the trigger lever 13 is returned, the trigger lever 13 is urged by a spring (not shown) in the direction in which the corrugated cylinder 15 is extended, so that the corrugated cylinder 15 is extended. Inside becomes negative pressure. When the pressure in the variable capacity chamber 16 becomes negative, only the suction valve 17 is opened because the backflow of the pressure output valve 19 is prevented, and the liquid in the passage switching valve 20 is introduced into the variable capacity chamber 16 and is filled therein. Will be.

At this time, the piston member 2 of the passage switching valve 20
2 is lowered by its own weight until the upper piston board 30 abuts on the upper cylinder bottom 26, so that the upper cylinder opening 29 is closed. Therefore, even if the inside of the passage switching valve 20 becomes negative pressure, the air G in the upper part of the container 1 is not sucked through the upper cylinder opening 29, and the liquid L in the container 1 flows from the liquid sending tube 28 to the upper opening 36, Piston opening 34, liquid passage 35 in the intermediate cylinder,
The liquid is supplied to the suction valve 17 via the upper piston opening 33 and is filled in the variable capacity chamber 16. As the liquid L in the container 1 is consumed, the air G in the container 1 is reduced in pressure, but the outside air is replenished by a pressure adjusting valve (not shown), and the atmospheric pressure is maintained in the container. By the above action,
When the container 1 is upright, the trigger dispenser 10 can continuously eject the liquid L from the ejection unit 12 by repeating the trigger operation.

Next, the operation when the container 1 with the trigger dispenser is used upside down will be described with reference to FIG. In FIG. 2, when the trigger lever 13 is pulled in a state where the container 1 is inverted, the corrugated cylinder is compressed by the connecting rod connected to the trigger lever 13, and the inside of the variable capacity chamber 16 is pressurized. By this pressurization, the liquid in the variable capacity chamber 16 pushes down the opening / closing plate of the extruding valve 19 and is jetted from the jetting unit 12 via the liquid passage pipe.
At this time, the opening / closing plate of the suction valve 17 is in close contact with the liquid passage, so that backflow in the direction of the container 1 is prevented.

Next, when the trigger lever 13 is returned, the corrugated cylinder is extended, and the inside of the variable capacity chamber 16 becomes negative pressure. When the variable capacity chamber 16 becomes negative pressure,
Since the backflow of the pressure-release valve 19 is prevented, only the suction valve 17 is opened, and the liquid in the passage switching valve 20 is introduced into the variable capacity chamber 16 to fill it.

When the container 1 is inverted, the piston member 2
2 moves down by its own weight until the lower piston board 31 contacts the lower cylinder top 27. For this reason, the lower piston board 3
The first lower piston opening 34 is closed by the lower cylinder top 27, and at the same time, the upper cylinder opening 29 is opened. At this time, since the length of the piston rod 32 is adjusted so that the upper piston board 30 does not block the liquid passage to the suction valve 17, the liquid L in the container 1 flows through the upper cylinder opening 29 and the upper cylinder opening 29. The liquid is supplied to the suction valve 17 via the piston opening 33 and is filled in the variable capacity chamber 16. At this time, in the inverted state, the distal end of the liquid sending tube 28 is open to the air G of the container 1, but since the lower piston opening 34 of the lower piston board 31 is closed, the air G in the container 1 is sent. The liquid is not sucked into the passage switching valve 20 via the liquid tube 28.

Since the upper cylinder opening 29 is open to the upper part in the container 1, the trigger dispenser 10 repeats the trigger operation of the trigger lever 13 until the liquid L in the container 1 is consumed. The liquid L can be continuously ejected from the ejecting section 12 even in the inverted state.

In the above embodiment, the number of openings 33, 34 formed in the upper piston disc 30 and the lower piston disc 31 is not particularly limited, but two or more are formed symmetrically from the axis. Is preferred. Further, rubber packing is mounted between the upper piston board 30 and the upper cylinder opening 29 and between the lower cylinder top 27 and the lower piston opening 34 in order to enhance the closeability at the time of contact. Alternatively, an annular projection or the like having a higher surface contact accuracy may be formed.

The suction valve 17 and the pressure release valve 1 used in the injection unit 11
Preferably, 9 comprises a liquid passage and an opening / closing plate disposed on the outlet side thereof. This type of valve is relatively inexpensive because it has a relatively simple structure and does not use steel balls, and has a good feeling of use because it does not drip when used upside down. The type is a flap type in which the open / close plate is swingably supported on one side, a butterfly type in which the open / close plate is divided into two and each is swingably supported at the center of the liquid through hole, or an open / close type. There is a floating type that is elastically supported so that the entire plate can float from the liquid through hole, and any of these types may be used. Further, other valve mechanisms, for example, a dome-shaped rubber molded body having a cut in the center mounted on the liquid through hole or a steel ball valve can be used.

The trigger dispenser of the present invention is characterized by having the passage switching valve having the above-mentioned structure, and the structure of other components is not particularly limited. For example, the variable capacity chamber of the pump section is, in addition to the corrugated cylinder shown in the embodiment, a piston cylinder,
Any device having a means for increasing or decreasing the volume of the room, such as a diaphragm, a balun, a flexible pipe, or a rotary, may be used. As for the configuration of the injection port, the drive mechanism and the interlocking mechanism of the trigger lever, any conventionally known ones can be used. Further, the injection unit is not limited to the trigger type, but may be of another type, for example, an aerosol type or a finger pump type. Examples of these are shown below.

(Embodiment 2) A dispenser 70 according to an embodiment 2 shown schematically in FIG. 3 is an aerosol type dispenser, which is mounted on the top 2 of the container 1 and ejects a liquid and ejects a liquid to the inside of the container 1. It has a passage switching valve 20 similar to that of the first embodiment for supplying the liquid L1 to the injection section 71. The container 1 contains, in addition to the liquid L1 to be jetted, a propellant L2 for pumping the liquid L1 toward the jetting section 71.

The injection portion 71 is configured such that an injection valve (not shown) provided therein is opened and closed by an operation of pushing / returning an injection button 72 urged upward by a spring. When the injection valve is opened by pressing the nozzle 72, the liquid L1 pressed by the propellant L2 in the container 1 passes through this valve to the nozzle portion 73 provided on the side surface of the injection button 72. It is to be injected from.

In the dispenser 70, when the injection button 72 is pressed while the container 1 is upright, the piston member 22 of the passage switching valve 20 at this time causes the upper piston board 30 to contact the upper cylinder bottom 26 by its own weight. Since the liquid L1 in the container 1 is in contact with and closes the upper cylinder opening 29, the liquid L1 in the container 1 flows from the liquid supply tube 28 to the upper opening 36, the lower piston opening 34, the liquid passage 35 of the intermediate cylinder, and the upper piston opening. The liquid is sent to the injection unit 71 through the liquid passage hole 74 communicating with the injection unit 71 via the hole 33, and is injected from the nozzle unit 73 through the injection valve in the injection unit 71.

When the dispenser 70 is used upside down, the piston member 22 moves downward by its own weight until the lower piston board 31 contacts the lower cylinder top 27. Therefore, the lower piston hole 34 of the lower piston board 31 is closed by the lower cylinder top portion 27, and the upper cylinder opening 29 is simultaneously opened. Therefore, the liquid L1 in the container 1 passes through the liquid passage hole 74 via the upper cylinder opening 29 and the upper piston opening 33, and
The pressure is fed to the injection unit 71, and is injected from the nozzle unit 73 through the injection valve in the injection unit 71. As described above, the dispenser 70 can continuously eject the liquid L1 while the container is inverted while the ejection button 72 is pressed.

(Embodiment 3) A dispenser 80 according to a third embodiment, which is schematically shown in FIG. 4, is a finger-pump type dispenser, which is mounted on the top 2 of the container 1 and injects a liquid to a liquid ejecting unit 81 and a container 1. And a passage switching valve 20 similar to that of the first embodiment for supplying the liquid L inside to the ejection unit 81.

The ejection section 81 has a variable capacity chamber whose inner volume is changed by pushing / returning the ejection head 82 urged upward by a spring (not shown), and sucks the liquid in the container into the variable capacity chamber. It has a built-in suction valve and an extruding valve for extruding the liquid pressurized in the variable capacity chamber toward the nozzle portion 83. When the ejection head 82 is pushed in, the ejection chamber 81 is pressurized in the variable capacity chamber.
The liquid in the variable capacity chamber is ejected from the nozzle portion via the extruding valve. At this time, the suction valve is closed, and backflow in the direction of the container is prevented.

In the dispenser 80, when the ejection head 82 is pushed with a finger in a state where the container 1 is upright, the liquid in the variable capacity chamber is ejected from the nozzle 83 as a liquid column or spray as described above. You. When the pressing force on the ejection head 82 is reduced, the volume of the variable capacity chamber is increased by the bias of the spring, and the liquid L in the container 1 is supplied from the suction valve.
However, in the same manner as in the first embodiment, the liquid is introduced from the liquid sending tube 28 into the variable capacity chamber that has become a negative pressure through the liquid passing hole 84 leading to the injection unit 81 and the suction valve in the injection unit 81 sequentially. Fill this.

Even when the dispenser 80 is used upside down, when the ejection head 82 is pushed in, the liquid in the variable capacity chamber is ejected from the nozzle 83 as described above. When the pressing force on the ejection head 82 is reduced and the volume of the variable capacity chamber is increased by urging the spring, the passage switching valve 20
Is moved downward by its own weight, and the lower piston opening 34 of the lower piston board 31 is closed by the lower cylinder top 27, and at the same time, the upper cylinder opening 29 is opened, so that the liquid L in the container 1 , Through the upper cylinder opening 29 and the upper piston opening 33, through the liquid passage 74, and is introduced into and filled in the variable capacity chamber which has been under negative pressure. As described above, the dispenser 80 can continuously eject the liquid L by repeating the pushing / returning operation of the ejection head 82 even when the container is inverted.

The dispenser of the present invention described above is
Various modifications are possible depending on the form of injection. For example, by providing gas-liquid mixing means for mixing the liquid in the container and the air and / or propellant gas inside and outside the container at an appropriate ratio in the dispenser, the liquid is sprayed from the nozzle unit, that is, sprayed in a mist state. Will be able to This type of dispenser is known as an atomizer. The liquid in the container contains a surfactant, and the dispenser is provided with gas-liquid mixing means for mixing the liquid in the container and the propellant and / or gas phase in the container at an appropriate ratio. Alternatively, the liquid can be ejected from the nozzle portion in a foamed manner. This type of dispenser is known as a former. As the above-mentioned various gas / liquid mixing means, conventionally known techniques such as a method of introducing a gas from an orifice into a liquid stream and a method of mixing a liquid and a gas through a mesh can be appropriately applied. it can.

The dispenser of the present invention comprises a liquid cosmetic,
Attached to a container filled with various liquid detergents, finishing liquids, fungicides / antiseptic solutions, bleaching solutions, water, etc., when spraying or spraying a certain amount in the container, regardless of whether it is upright or inverted, However, it can be used advantageously.

Next, the embodiments of the present invention will be summarized and listed. (1) A dispenser that is mounted on the top of a container and has an ejection unit that ejects liquid and a passage switching valve that supplies liquid in the container to the ejection unit, wherein the passage switching valve includes an outer cylinder member, A piston member which is movable in the up and down direction while being housed therein, and the outer cylinder member is provided with a large-diameter upper cylinder portion and a lower cylinder portion which coaxially communicate with each other, and a small diameter member disposed therebetween. An upper cylinder bottom is formed between the lower end of the upper cylinder and the upper end of the intermediate cylinder, and a top of the lower cylinder is formed between the lower end of the intermediate cylinder and the upper end of the lower cylinder. The bottom of the tube is connected to a flexible liquid feed tube extending to the bottom of the container,
The top of the upper cylinder is connected to the injection unit, and the bottom of the upper cylinder is formed with an upper cylinder opening that is open to the top inside the container. The piston member slides in the upper cylinder and the lower cylinder, respectively. The upper piston board, the lower piston board which can move, and the piston rod which penetrates the inside of the intermediate cylinder and connects the upper and lower piston boards, the upper piston board and the lower piston board have upper piston holes, lower piston boards, respectively. It has a piston opening, and a liquid passage is formed between the piston rod and the intermediate cylinder. When the container is erected, the upper piston board closes the upper cylinder opening and the liquid in the container is sent. The liquid is sent from the liquid tube to the injection section via the lower piston opening, the intermediate cylinder liquid passage, and the upper piston opening. When the container is inverted, the piston member descends by its own weight and the upper cylinder opening is opened. The lower piston opening is closed by the lower cylinder top, Dispenser so as to be fed to the ejection portion of the liquid through the upper barrel opening and the upper piston apertures. (2) In the above (1), between the upper piston board and the upper cylinder opening, and / or the lower cylinder top and the lower piston opening 34.
Trigger dispenser with rubber packing mounted between. (3) The trigger dispenser according to (1) above, wherein an annular projection is formed between the upper piston board and the upper cylinder opening and / or between the lower cylinder top and the lower piston opening. (4) In the above (1), the ejection unit is a trigger type capable of ejecting the liquid in the container by pulling / returning the trigger lever, and the internal volume is changed by pulling / returning the trigger lever. A dispenser having a chamber and a suction valve for sucking the liquid in the container into the variable capacity chamber. (5) The dispenser according to (4), wherein the variable capacity chamber has any of a corrugated cylinder, a piston cylinder, a diaphragm, a balun, a flexible pipe, and a rotary. (6) The dispenser according to (4), wherein the suction valve comprises a liquid passage and an opening / closing plate disposed on an outlet side thereof. (7) In the above (1), the ejecting unit is an aerosol type that can eject the liquid in the container by an operation of pushing the push / returnable eject button, and is included in the container when pushing the eject button. A dispenser having an injection valve capable of injecting liquid in a container with a pressing force of a propellant. (8) In the above (1), the ejection unit is a finger press pump type capable of ejecting the liquid in the container by pushing / returning the ejection head, and changing the inner volume by pushing / returning the ejection head. A dispenser having a variable capacity chamber and a suction valve for sucking a liquid in a container into the variable capacity chamber. (9) Liquid cosmetics, various liquid detergents, finishing liquids, mildew
The dispenser according to any one of (1) to (8), which is mounted on a container filled with an antiseptic solution, a bleaching solution, or water.

[0037]

According to the present invention, the dispenser has a passage switching valve for supplying the liquid in the container to the jetting unit, and the passage switching valve is disposed between the large-diameter upper and lower cylinders and the middle thereof. An outer cylinder member having a small-diameter intermediate cylinder portion and an upper cylinder opening formed at the bottom of the upper cylinder, and an upper piston having an opening each connected to the upper and lower sides of a piston rod penetrating through the intermediate cylinder. The upper piston board closes the upper cylinder opening when erected, and the lower cylinder top opens when it is upright. Since the hole is closed, the liquid in the container can be continuously ejected until the liquid in the container is consumed, whether in an upright state or an inverted state, for example, into the hair. Spraying hair charge and bathroom
Even when spraying a detergent or disinfectant to a low position in a small room such as a toilet or when it is desired to spray toward the front, it can be smoothly and smoothly sprayed or sprayed.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an aspect of the above embodiment when it is inverted.

FIG. 3 is a sectional view showing another embodiment of the present invention.

FIG. 4 is a sectional view showing still another embodiment of the present invention.

FIG. 5 is a sectional view showing an example of a conventional trigger dispenser.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Container, 2 ... Container top part, 3 ... Container bottom part, 10 ... Dispenser, 11 ... Injection part, 12 ... Nozzle part, 13 ... Trigger lever, 16 ... Variable capacity chamber, 17 ... Suction valve, 19 ... Extrusion valve, Reference numeral 20: passage switching valve, 21: outer cylinder member, 22: piston member, 23: upper cylinder section, 24: lower cylinder section, 25: intermediate cylinder section, 26: upper cylinder bottom section, 27: lower cylinder top section, 28 ... Liquid sending tube, 29: Upper cylinder opening, 30: Upper piston board, 31: Lower piston board, 32: Piston rod, 33: Upper piston opening, 34: Lower piston opening, 35: Liquid passage, 36 ... Upper opening, 70: dispenser, 71: injection unit, 72: injection button, 73: nozzle unit, 74: liquid passage hole, 80: dispenser, 81: injection unit, 82: injection head, 83: nozzle unit, 84: communication Liquid hole, L, L1… liquid L2 ... propellant, G ... air.

Claims (3)

[Claims] 1. A dispenser which is mounted on a top of a container and has a jetting unit for jetting liquid and a passage switching valve for supplying liquid in the container to the jetting unit, wherein the passage switching valve is an outer cylinder member And a piston member that can move vertically in a state housed therein. The outer cylinder member is disposed between the large-diameter upper cylinder section and the lower-diameter cylinder section that coaxially communicate with each other, and between them. An intermediate cylindrical portion having a small diameter, an upper cylindrical bottom portion is formed between an upper cylindrical portion lower end and an intermediate cylindrical portion upper end, and a lower cylindrical top portion is formed between the intermediate cylindrical portion lower end and the lower cylindrical portion upper end. The bottom of the lower tube was connected to a flexible liquid feed tube extending to the bottom of the container, the top of the upper tube was connected to the injection unit, and the bottom of the upper tube was open to the top inside the container. An upper cylinder opening is formed, and the piston member allows the piston member to slide in the upper cylinder section and the lower cylinder section, respectively. A ton board, a lower piston board, and a piston rod penetrating through the intermediate cylindrical portion and connecting the upper and lower piston boards. The upper piston board and the lower piston board have an upper piston opening and a lower piston opening, respectively. Also, a liquid passage is formed between the piston rod and the intermediate cylinder portion, and the upper piston board closes the upper cylinder opening when the container is erected,
The liquid in the container is sent from the liquid sending tube to the injection section via the lower piston opening, the intermediate cylinder passage, and the upper piston opening, and when the container is inverted, the piston member descends due to its own weight. The upper cylinder opening is opened, the lower piston opening is closed by the lower cylinder top, and the liquid in the container is sent to the injection unit via the upper cylinder opening and the upper piston opening. Dispenser characterized by the following. 2. A variable-capacity chamber, wherein said ejecting unit is of a trigger type capable of ejecting liquid in a container by pulling / returning a trigger lever, wherein said variable volume chamber changes an internal volume by pulling / returning said trigger lever. 2. The dispenser according to claim 1, further comprising a suction valve for sucking the liquid in the container into the variable capacity chamber. 3. An aerosol type in which the ejection unit is capable of ejecting a liquid in a container by an operation of pushing a push / returnable ejection button, and when the ejection button is pushed, a propellant contained in the container is provided. The dispenser according to claim 1, further comprising an injection valve capable of injecting the liquid in the container with a pressing force of: