JP2013095459A - Discharging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharging container capable of stabilizing the quality of bubbles to a predetermined quality when an air liquid mixture bubbled by passing through a bubbling member is discharged from a nozzle hole.SOLUTION: The discharging container includes: a pump 1 having a stem 10 stood so that it can be moved downward under an upward energized condition; and a pushing-down head 2 which is arranged on the upper end part of the stem 10, and in which the nozzle hole 21 is formed. The pump 1 includes: a piston 50 for a liquid engaged with the stem 10; a cylinder 16 for the liquid for storing the piston 50 for the liquid; a piston 40 for air linked with the stem 10; a cylinder 15 for air for storing the piston 40 for air; a gas liquid mixing room 3 for mixing the liquid from the cylinder 16 for the liquid and the air from the cylinder 15 for the air; and the bubbling member 60 for bubbling the gas liquid mixed body mixed in the gas liquid mixing room 3. In the pushing-down head 2, a mounting cylinder part 22 for communicating the inside of the stem 10 with the nozzle hole 21 is extended toward downward, and the bubbling member 60 is arranged in the upper end part of the mounting cylinder part 22.

Description

  The present invention relates to a dispenser.

  Conventionally, a pump having a stem erected so as to be movable downward in an upwardly biased state at a mouth portion of a container containing a liquid, and a pressing head disposed at an upper end portion of the stem and having a nozzle hole formed therein The pump includes a liquid piston linked to the stem, a liquid cylinder in which the liquid piston is housed slidably in the vertical direction, an air piston linked to the stem, An air cylinder in which an air piston is housed slidably up and down, a gas-liquid mixing chamber for mixing the liquid from the liquid cylinder and the air from the air cylinder, and the gas-liquid mixing chamber. There is known a discharge device including a foaming member that foams a mixed gas-liquid mixture (see, for example, Patent Document 1).

JP 2008-184222 A

  However, in the conventional discharger, there is room for improvement with respect to stabilizing the foam quality when the gas-liquid mixture foamed through the foaming member is discharged from the nozzle hole. .

  DISCLOSURE OF THE INVENTION The present invention has been made in view of such circumstances, and a discharger that can stabilize the foam quality when a gas-liquid mixture that has passed through a foaming member and is foamed is discharged from a nozzle hole. The purpose is to provide.

As means for solving the above problems, the present invention provides the following means.
According to a first aspect of the present invention, there is provided a pump having a stem erected on the mouth of a container in which liquid is accommodated in an upwardly biased state, and an upper end of the stem. A discharge head including a push-down head having a nozzle hole, wherein the pump includes a liquid piston linked to the stem, and a liquid piston in which the liquid piston is accommodated slidably up and down. A cylinder, an air piston linked to the stem, an air cylinder in which the air piston is housed slidably up and down, a liquid from the liquid cylinder, and an air from the air cylinder. A gas-liquid mixing chamber to be mixed; and a foaming member for foaming the gas-liquid mixture mixed in the gas-liquid mixing chamber. Mounting to communicate with nozzle hole Parts are being extended downward, to provide a dispenser wherein said foam member within the upper end portion of said mounting cylinder portion is disposed.

In this discharger, since the foam member is disposed at the upper end portion closest to the nozzle hole even in the mounting cylinder portion of the pressing head, the gas-liquid mixture (hereinafter referred to as foam) foamed through the foam member. However, it is possible to keep the distance to reach the nozzle hole short, and it is possible to make the expected foamy foam easily reach the nozzle hole.
If the distance from the foam member to the nozzle hole is long, the foam that slides on the inner surface of the pressing head and does not reach the nozzle hole tends to be large, and accordingly, the foam remaining in the pressing head. A large amount of liquid material is returned to the liquid state, and when the newly generated foam comes into contact with this large amount of liquid material, many bubbles of the newly generated foam are crushed and the expected foam There is a possibility that the quality foam is difficult to be discharged from the nozzle hole.
Further, in the present invention, since the foam member is disposed in the upper end portion of the mounting cylinder portion of the pressing head, it is possible to easily reduce the length of the mounting cylinder portion. Manufacturing efficiency can be easily increased without complicating the mold structure.

  Further, in the above-described discharger, the lower end of the liquid cylinder is a lower valve body that can be seated and separated from the lower end opening of the liquid cylinder, and the upper end is connected to the liquid cylinder. A rod-shaped valve member serving as an upper valve body that switches between communication with and shutoff of the upper end portion of the stem is provided, and an intermediate portion located between the upper end portion and the lower end portion of the valve member is disposed. A plurality of vertical grooves extending continuously over the entire length in the vertical direction are formed on the outer peripheral surface at intervals in the circumferential direction, and the radial inner end surfaces of the plurality of vertical grooves are flush with the entire length in the vertical direction. It is preferable that

  In this case, a plurality of vertical grooves are formed in the middle portion of the valve member, and the inner end surfaces in the radial direction of the plurality of vertical grooves are flush with each other over the entire length in the vertical direction. It becomes possible to make it easy to cool the valve member after doing it early, suppressing generation | occurrence | production of an internal stress, while being able to improve manufacturing efficiency further, the quantity of the material to be used can also be suppressed.

  According to the present invention, it is possible to stabilize the foam quality when the gas-liquid mixture foamed through the foaming member is discharged from the nozzle hole.

It is sectional drawing of the pump and pressing head which comprise the discharger which concerns on embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a pump 1 and a pressing head 2 constituting a discharger according to the present invention. In the drawing, O indicates a container axis of a container (not shown) to which the pump 1 and the pressing head 2 are mounted. In the following, the pressing head 2 side is referred to as the upper side and the pump 1 side is referred to as the lower side along the container axis O. Further, a direction orthogonal to the container axis O is referred to as a radial direction, and a circumferential direction of the container axis O is referred to as a circumferential direction.

The pump 1 has a stem 10 erected at the mouth portion of the container so as to be movable downward in an upwardly biased state, and the pressing head 2 has a nozzle hole 21 disposed at an upper end portion of the stem 10. Yes.
The pump 1 has an insertion hole 31 into which the stem 10 is inserted so as to be movable up and down, a mounting cap 30 that is attached to the mouth of the container, and an air piston 40 that is linked to the pressing head 2 and the stem 10 inside. From the air cylinder 15 accommodated slidably up and down, the liquid cylinder 16 in which the liquid piston 50 linked to the pressing head 2 and the stem 10 is slidably accommodated in the inside, and from the air cylinder 15 The gas-liquid mixing chamber 3 where the air and the liquid from the liquid cylinder 16 merge, and the gas-liquid mixing that is disposed between the gas-liquid mixing chamber 3 and the nozzle hole 21 and mixed in the gas-liquid mixing chamber 3. And a foaming member 60 for foaming the body.

  In the illustrated example, the mounting cap 30 includes a ceiling wall portion 32 in which an insertion hole 31 is formed, a mounting peripheral wall portion 33 extending downward from an outer peripheral edge of the ceiling wall portion 32, and a ceiling wall portion 32. And a guide tube portion 34 extending upward from the outer peripheral edge portion of the insertion hole 31, and a screw portion 35 for screwing the inner peripheral surface of the mounting peripheral wall portion 33 to the mouth portion of the container. Is formed.

  The liquid cylinder 16 and the air cylinder 15 each have a cylindrical shape. In this embodiment, the liquid cylinder 16 and the air cylinder 15 are integrally formed, and the outer peripheral surface at the upper end opening of the air cylinder 15 is formed. The mounting cap 30 is closely attached to the inner surfaces of the mounting peripheral wall 33 and the top wall 32. The air cylinder 15 is formed in a bottomed cylindrical shape, and a cylindrical liquid cylinder 16 is connected to a bottom surface of the air cylinder 15 in a state where the inside thereof communicates with the inside of the air cylinder 15. That is, a small-diameter liquid cylinder 16 is continuously provided below the large-diameter air cylinder 15.

  The pressing head 2 having the nozzle hole 21 includes a mounting cylinder portion 22 extending downward and having the stem 10 fitted therein, and a mounting cylinder portion 22 extending downward and extending radially. And an outer cylinder portion 23 that surrounds from the outside. The upper end opening of the mounting cylinder 22 communicates with a proximal opening formed at the proximal end of the nozzle cylinder 24 having the nozzle hole 21 formed at the distal end. The base end opening of the nozzle cylinder 24 opens downward, and the mounting cylinder 22 and the nozzle cylinder 24 are connected to form an L shape.

  The mounting cylinder portion 22 is inserted inside a guide cylinder portion 34 provided on the mounting cap 30 so as to be movable up and down. Further, the inner diameter of the outer cylinder portion 23 is larger than the outer diameter of the guide cylinder portion 34, and when the pressing head 2 is pushed down, the inner peripheral surface of the outer cylinder portion 23 and the outer peripheral surface of the guide cylinder portion 34 are Are opposed in the radial direction. Further, the position in the vertical direction of the lower end portion of the mounting cylinder portion 22 is equivalent to the position in the vertical direction of the lower end portion of the outer cylinder portion 23, and more specifically, slightly below the lower end portion of the outer cylinder portion 23. It protrudes.

  In the present embodiment, the foam member 60 is disposed in the upper end portion of the mounting cylinder portion 22. The upper end portion of the stem 10 is fitted to the lower end portion of the foam member 60.

  The foam member 60 includes a cylindrical casing 61 and two foam elements 62 inserted into the casing 61. The casing 61 has a two-stage cylindrical shape having a large-diameter portion on the upper side and a small-diameter portion on the lower side. The large-diameter portion is inserted and fixed inside the mounting cylinder portion 22, and the small-diameter portion is the upper end portion of the stem 10. It is fitted inside. A plurality of casing grooves 61a are formed on the outer peripheral surface of the small diameter portion so as to extend upward from the lower end thereof to reach the bottom outer surface of the large diameter portion, and to extend outward in the radial direction.

  Further, the foam element 62 has a structure in which a net is stretched on the cylindrical main body. Of the two foam elements 62 arranged in the casing 61, the lower one is located below the cylindrical main body. A net is stretched on the side opening surface, and a net is stretched on the upper opening surface of the cylindrical main body on the upper side.

Here, the positions in the vertical direction of the upper end opening of the mounting cylinder 22, the base end opening of the nozzle cylinder 24, and the upper end opening of the foam member 60 are equal to each other. More specifically, the upper end opening of the foam member 60 is positioned slightly below the proximal end opening of the nozzle cylinder 24.
A protruding bottom wall protruding upward is formed on the bottom wall of the nozzle cylindrical portion 24 adjacent to the proximal end opening of the nozzle cylindrical portion 24 on the nozzle hole 21 side, and an inner surface side of the protruding bottom wall ( On the side opposite to the nozzle hole 21, a locking projection that protrudes toward the inside in the radial direction of the base end opening and engages with the upper end of the foam member 60 is formed.
In this embodiment, the upper end opening of the foam member 60 is positioned slightly below the protruding bottom wall, and the bottom of the nozzle cylinder 24 positioned on the nozzle hole 21 side of the protruding bottom wall. The mounting tube portion 22 is provided so as to be substantially flush with the wall.

  The stem 10 protrudes downward from the lower end opening surface of the mounting cylinder portion 22. A plurality of vertical grooves 22 a extending in the vertical direction and opening downward are formed in a portion where the upper end portion of the stem 10 is fitted on the inner peripheral surface of the mounting cylinder portion 22. These longitudinal grooves 22 a are in communication with a plurality of casing grooves 61 a formed in the casing 61 of the foam member 60 so as to straddle the upper end opening edge of the stem 10 in the radial direction.

The air piston 40 is arranged in the air cylinder 15 so as to be vertically slidable in an airtight state, and includes a multi-stage cylindrical outer cylinder 41, an inner cylinder 42 disposed inside the outer cylinder 41, and an outer cylinder. The upper end portion of 41 and the outer peripheral surface of the inner cylinder 42 are connected, and the top plate portion 44 having an air hole 43 penetrating in the vertical direction is fitted to the outer peripheral surface of the inner cylinder 42 to open and close the air hole 43. And a valve body 45. Among these, inside the inner cylinder 42, a portion of the stem 10 that is continuous to the lower part of the upper end portion fitted to the mounting cylinder portion 22 is inserted so as to be movable up and down.
Here, the upper end of the guide cylinder portion 34 of the mounting cap 30 is positioned slightly above the upper end of the inner cylinder 42.

  An upper slidable contact portion 42 a that slidably contacts the inner peripheral surface of the lower end side of the mounting cylinder portion 22 is formed at the upper end edge of the inner cylinder 42 in the air piston 40 over the entire circumference of the inner cylinder 42. In addition, an annular lower sliding contact portion 41 a that is in sliding contact with the inner surface of the air cylinder 15 is formed at the lower end portion of the outer cylinder 41.

  A vertical gap S is provided between the upper edge of the upper sliding contact portion 42 a and the inner surface of the mounting cylinder portion 22. Further, a gap is provided between the lower end of the mounting cylinder portion 22 and the upper end edge of the inner cylinder 42.

  Further, the air holes 43 formed in the top plate portion 44 are formed at positions that are opposed to the top wall portion 32 of the mounting cap 30 in the vertical direction outside the insertion hole 31 of the mounting cap 30 in the radial direction. . A baffle plate 46 projects upward from a portion of the top plate portion 44 that is located on the inner side in the radial direction of the air hole 43. The upper end of the baffle plate 46 is in close proximity to or in contact with the top wall portion 32 of the mounting cap 30 from below the top wall portion 32.

  Here, in the gap S, a vertical groove 22 a formed on the inner peripheral surface of the mounting cylinder portion 22 is opened. Further, on the outer peripheral surface of the stem 10, a plurality of stem grooves 10 a extending in the vertical direction and opening in the gap S are formed in a portion of the air piston 40 where the inner cylinder 42 is disposed. The air cylinder 15 and the gas-liquid mixing chamber 3 communicate with each other by the stem groove 10a, the longitudinal groove 22a formed in the mounting cylinder portion 22, the casing groove 61a formed in the casing 61 of the foam member 60, and the gap S. An air passage 5 is configured.

  Next, the liquid piston 50 which is disposed in the liquid cylinder 16 and slides up and down is a small-diameter cylindrical portion 51 whose upper end side is inserted and fixed in a liquid-tight state inside the stem 10 and whose lower end side is the stem. A large-diameter cylindrical portion 52 that protrudes downward from the lower edge of the opening 10 and whose outer peripheral surface is substantially flush with the outer peripheral surface of the stem 10 is formed.

  Inside the liquid piston 50 and the liquid cylinder 16, an upper valve body 17 a having an upper end portion having a hollow inverted conical shape and a lower end portion which can be seated and separated from a lower end opening in the liquid cylinder 16 is provided. A rod-shaped valve member 17 is provided as a valve body 17b.

  The upper valve body 17a is a valve that switches communication between the liquid cylinder 16 and the upper end of the stem 10 and blocking of the communication. Here, reference numeral 4 in the figure indicates a coil spring disposed between the liquid piston 50 and the inner surface of the lower end of the liquid cylinder 16. The coil spring 4 has a large diameter for the liquid piston 50. The cylinder portion 52 is supported so as to be movable downward from the lower side in an upward biased state.

In the valve member 17, a longitudinal groove 18 is formed on the outer peripheral surface of an intermediate portion located between the upper valve body 17 a and the lower valve body 17 b and continuously extending over the entire length in the vertical direction. A plurality of the vertical grooves 18 are formed at intervals in the circumferential direction of the intermediate portion, and the inner end surface in the radial direction of the vertical grooves 18 is flush with the entire length in the vertical direction.
For example, the cross section of the intermediate portion is formed in a cross shape.

  Here, on the inner peripheral surface of the stem 10, an annular valve seat 12 protrudes radially inward from a portion located between the liquid piston 50 and the foaming member 60. A spherical liquid discharge valve 13 is provided on the valve seat 12 so as to be seated and separated. In the stem 10, the space between the lower end of the small diameter portion of the foam member 60 and the upper surface of the valve seat 12 is the gas-liquid mixing chamber 3.

  Further, on the outer peripheral surface of the stem 10, a protruding portion 11 protrudes from the portion where the lower ends of the plurality of stem grooves 10 a are located over the entire periphery. In the standby state before the pressing head 2 is pressed, the opening of the air passage 5 in the air cylinder 15 is blocked by the lower end of the inner cylinder 42 of the air piston 40 coming into contact with the upper surface of the protruding portion 11. Thus, the communication between the inside of the air cylinder 15 and the gas-liquid mixing chamber 3 is blocked.

  A stopper member 70 that restricts the downward movement of the pressing head 2 is disposed between the lower end of the outer cylinder portion 23 of the pressing head 2 and the upper surface of the top wall portion 32 of the mounting cap 30. The stopper member 70 is detachably fitted to the guide tube portion 34. The stopper member 70 includes a stopper main body 71 formed in a C shape in a cross section, and a knob portion 72 integrally formed on the outer peripheral surface of the stopper main body 71 at a position substantially opposite to the open portion of the stopper main body 71. I have.

  In the discharge device including the pump 1 and the pressing head 2 as described above, the lower end of the inner cylinder 42 in the piston 40 for air is formed on the upper surface of the protruding portion 11 of the stem 10 in a standby state before the pressing head 2 is pressed. And a gap S in the vertical direction is provided between the lower end portion of the mounting cylinder portion 22 in the pressing head 2 and the upper end of the inner cylinder 42 of the air piston 40.

When the pressing head 2 is pushed down from this state, the mounting cylinder portion 22 is lowered, and the foam member 60, the stem 10, and the liquid piston 50 are also moved downward while the coil spring 4 is compressed and deformed in the vertical direction. At this time, the air piston 40 does not move, and a gap is formed between the lower end of the inner cylinder 42 of the air piston 40 and the upper surface of the protruding portion 11 of the stem 10. A gap S between the upper end edge of the inner cylinder 42 and the inner surface of the mounting cylinder portion 22 is reduced. As a result, the air cylinder 15 and the gas-liquid mixing chamber 3 communicate with each other through the air passage 5.
Further, with the downward movement of the liquid piston 50, the lower valve body 17b is also moved downward. The lower valve body 17b is seated and closed at the lower end opening of the liquid cylinder 16, and the liquid piston 50 is closed. Of the valve member 17 is separated downward from the upper valve body 17a of the valve member 17, and the liquid cylinder 16 and the inside of the stem 10 are communicated with each other.

  When the pressing head 2 is further pushed down, the air piston 40 is also moved downward with the valve body 45 closing the air hole 43, so that the air piston 40 is positioned below the air piston 40 in the air cylinder 15. The air in the lower chamber is compressed. Thus, the air in the lower chamber flows into the air passage 5 from the gap between the lower end of the inner cylinder 42 of the air piston 40 and the protruding portion 11 of the stem 10 and is transferred to the gas-liquid mixing chamber 3. The

  Further, at this time, since the lower piston 17b of the valve member 17 closes the lower end opening of the liquid cylinder 16, the liquid piston 50 moves downward, so that the liquid in the liquid cylinder 16 rises and the stem 10 Reach inside. Then, the liquid pressure in the liquid cylinder 16 is applied to the liquid discharge valve 13 seated on the valve seat 12 of the stem 10 to separate the liquid discharge valve 13 from the valve seat 12. The liquid inside is transferred into the gas-liquid mixing chamber 3.

As described above, after the liquid and air are merged in the gas-liquid mixing chamber 3 and passed through the foaming member 60, the liquid is foamed, and then the foam-like liquid (gas-liquid mixing) is passed through the nozzle hole 21 of the pressing head 2. The body (foam) is discharged.
Thereafter, when the depression of the pressing head 2 is released, the pressing head 2, the stem 10, the air piston 40 and the liquid piston 50 linked to the stem 10 are returned to the upward biased state by the elastic restoring force of the coil spring 4. become.

In the embodiment of the present invention described above, the foaming member 60 is disposed in the upper end portion closest to the nozzle hole 21 in the mounting cylinder portion 22 of the pressing head 2. The gas-liquid mixture (hereinafter referred to as foam) can be kept short in the distance until it reaches the nozzle hole 21, and the desired foamy foam can easily reach the nozzle hole 21. Can do.
If the distance from the foaming member 60 to the nozzle hole 21 is long, a large amount of foam does not reach the nozzle hole 21 due to sliding contact with the inner surface of the pressing head 2. The foam that remains in the liquid also becomes a large amount of liquid, and the newly generated foam comes into contact with this large amount of liquid, so that many of the newly generated foam is crushed. There is a possibility that the expected foamy foam is difficult to be discharged from the nozzle hole 21.
Moreover, in this embodiment, it becomes possible to make it easy to suppress the length of the mounting | wearing cylinder part 22, and it can raise manufacturing efficiency easily, without making the structure of the shaping die of the pressing head 2 complicated. .

  Further, in the present embodiment, the lower end of the liquid cylinder 16 is a lower valve body 17b that can be seated and separated from the lower end opening of the liquid cylinder 16, and the upper end of the liquid cylinder 16 is in the liquid cylinder 16. A rod-shaped valve member 17 serving as an upper valve body 17a for switching between communication with and disconnection from the upper end portion of the stem 10 is provided, and an intermediate position of the valve member 17 located between the upper end portion and the lower end portion. A plurality of vertical grooves 18 continuously extending over the entire length in the vertical direction are formed on the outer peripheral surface of the portion at intervals in the circumferential direction, and the radially inner end surfaces of the plurality of vertical grooves 18 extend over the entire length in the vertical direction. It is the same.

  In this case, a plurality of vertical grooves 18 are formed in the intermediate portion of the valve member 17, and the inner end surfaces in the radial direction of the plurality of vertical grooves 18 are flush with each other over the entire length in the vertical direction. It is possible to easily cool the valve member 17 after being released from the mold while suppressing the internal stress, and it is possible to further improve the manufacturing efficiency and to suppress the amount of material to be used. it can.

  As mentioned above, although embodiment of the discharge device concerning this invention was described, this invention is not limited to above-described embodiment, In the range which does not deviate from the meaning, it can change suitably.

DESCRIPTION OF SYMBOLS 1 Pump 2 Press head 3 Gas-liquid mixing chamber 10 Stem 15 Air cylinder 16 Liquid cylinder 17 Valve member 17a Upper valve body 17b Lower valve body 18 Vertical groove 21 Nozzle hole 22 Mounted cylinder part 40 Air piston 50 Liquid piston 60 Foam member

Claims (2)

A pump having a stem erected in an upwardly biased state at the mouth of a container containing liquid;
A pressing head disposed at the upper end of the stem and having a nozzle hole formed thereon;
A dispenser comprising:
The pump includes
A liquid piston linked to the stem;
A liquid cylinder in which the liquid piston is housed slidably up and down;
An air piston linked to the stem;
An air cylinder in which the air piston is housed slidably up and down;
A gas-liquid mixing chamber for mixing the liquid from the liquid cylinder and the air from the air cylinder;
A foam member for foaming the gas-liquid mixture mixed in the gas-liquid mixing chamber;
Is provided,
A mounting cylinder portion that is mounted on the stem and communicates with the inside of the stem and the nozzle hole extends downward from the pressing head, and the foam member is disposed in an upper end portion of the mounting cylinder portion. Dispenser characterized by being disposed. The dispenser according to claim 1, wherein
In the liquid cylinder, the lower end portion is a lower valve body that can be seated and separated from the lower end opening in the liquid cylinder, and the upper end portion is formed between the liquid cylinder and the upper end portion of the stem. A rod-shaped valve member that is an upper valve body that switches between communication and blocking thereof is disposed,
Among the valve members, a plurality of vertical grooves continuously extending over the entire length in the vertical direction are formed on the outer peripheral surface of the intermediate portion located between the upper end portion and the lower end portion at intervals in the circumferential direction. And
An inner end face in the radial direction of the plurality of vertical grooves is flush with the entire length in the vertical direction.

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