JP4637501B2 - Foam forming apparatus and pump type foaming container - Google Patents

Description

  The present invention relates to a foam forming apparatus and a pump-type foaming container.

  A pump-type foaming container that discharges foaming liquid such as shampoo, hand soap and shaving agent and air is generally used. Examples of the pump type foaming container include the following.

  As this pump-type foaming container, for example, “a double cylinder consisting of a concentric air cylinder and a liquid cylinder fixed to a lid attached to the container mouth portion, A piston body composed of a large-diameter air piston and a small-diameter liquid piston which are moved up and down and biased upward by the elasticity of a spring to form an air chamber and a liquid chamber. A mixing chamber for communicating the chamber and the liquid chamber is provided above both chambers, and an air passage and a liquid passage for communicating the mixing chamber and the two chambers are provided in the air piston and the liquid piston, respectively. A sheet-like porous body is disposed across the bubble passage on the downstream side of the mixing chamber, and a liquid suction pipe extending to the bottom of the container is attached to the lower end of the liquid chamber and the liquid chamber is opened at a negative pressure. A check valve is provided to the air piston. A second check valve that opens when the air chamber is negative and sucks air outside the air chamber is provided, and an annular sliding seal portion that slides up and down the inner surface of the air cylinder is provided below the outer peripheral surface. An air hole for introducing air into the head space portion of the container is provided in the upper portion of the sliding cylinder portion of the air cylinder on which the sliding seal portion slides, and the upper portion of the piston body passes through the lid body. In the pump type foaming container in which the nozzle body having a nozzle body fixed to the upper end of the piston body and fixed to the upper end of the piston body is engageable with the lid body against the elasticity of the spring, A rod-shaped valve body that is forcibly moved up and down by a predetermined amount as the piston body moves up and down is provided in the liquid passage formed inside the piston body, and the liquid chamber is closed in the liquid passage. With an upper cylindrical part that can be inserted By providing a cylindrical locking body that engages with the rod-shaped valve body on the inner surface side and restricts the amount of vertical movement of the rod-shaped valve body, the dedicated valve body is raised to the upper limit position. The upper part of the liquid passage closes the mixing chamber side outlet and engages with the cylindrical locking body at the lower part to prevent upward movement, and the nozzle body is attached to the lid body. When engaged and when the piston body is lowered to the lower limit position, the piston body is tightly fitted into the upper cylindrical portion of the cylindrical locking body that is tightly fitted into the portion that forms the liquid passage of the liquid piston. The liquid passage is closed and the piston body is lowered, and the liquid passage and the outlet of the liquid passage on the mixing chamber side are released from being closed, and the air A predetermined interval is placed above the sliding seal portion on the outer periphery of the piston for An annular seal portion having a size and shape capable of closing the air hole of the sliding cylinder portion is provided, and the sliding seal portion has a size and shape capable of closing the air hole, and the predetermined seal The interval is such that when the piston body is raised to the upper limit position, the sliding seal portion below the air piston closes the air hole, while the nozzle body engages the lid body, When the body is lowered to the lower limit position, the interval is such that the annular seal portion on the upper part of the air piston closes the air hole, and further on the upper portion of the sliding cylinder portion of the air cylinder. Is an air that forms a gap through which air can pass between the piston body and the annular seal portion above the air piston when the piston body is at least in a certain range of positions between the upper limit position and the lower limit position. Pump foam out container, characterized in that the road forming portion is provided. Is proposed (see Patent Document 1).

Japanese Utility Model Publication No. 6-70854 (Claim 1, paragraph number [0043], FIGS. 1 to 3)

  In the pump-type foaming container described in Patent Document 1, a net that forms fine uniform foam from a foamable liquid is embedded. And in the pump type foaming container of patent document 1, the foam was formed by allowing the mixture of a liquid and air to pass through this mesh body.

  In a pump-type foaming container using this mesh body, depending on the foamable liquid component, the liquid component may be clogged in the mesh body, and bubbles may not be formed uniformly. Further, since bubbles are formed by passing through the net body, it is difficult to form bubbles having a relatively large diameter, that is, coarse bubbles.

  It is an object of the present invention to provide a foam-forming device and a pump-type foaming container that can solve such conventional problems and form foams uniformly and form coarse foams.

Means for solving the above-mentioned problems are arranged in a cylindrical body in which air is not introduced from the peripheral side surface by not having a fluid ejection port on the peripheral side surface , and in the cylindrical body at a predetermined interval in the axial direction. it and a plurality of partition plates, said plurality of partition plates has one or more through holes communicating with the space between the adjacent partitioned by the cylindrical body and said plurality of partition plates respectively, said through The holes pass through the through holes of the adjacent partition plates and the central axis direction of the cylindrical body so that air and liquid that have entered the space through the through holes rise and collide with the adjacent partition plates. deviation and is formed in the partition plate with respect to, as the elevated air and liquid is disturbed by the adjacent partition plates, through the through hole formed in the partition plate enters the next space, the partition Foam forming device characterized by being formed on a plate It is.

  In a preferred aspect of the foam forming apparatus according to the present invention, the communication portion is deviated from the communication portion of the adjacent partition plate with respect to the central axis direction of the cylindrical body.

  Another means for solving the above problem is a pump-type foaming container comprising the foam forming apparatus.

  According to the present invention, since a conventional mesh body is not used, the liquid component is not clogged. Therefore, bubbles can be formed uniformly.

  In addition, the communication part has the air and liquid that have passed through the communication part and entered the space substantially rise toward the adjacent partition plate, and the raised air and liquid are disturbed by the adjacent partition plate. Then, each partition plate is formed so as to enter the next space through the communication portion formed in the partition plate. Therefore, since the raised air and liquid are disturbed by the adjacent partition plates, it is possible to form coarse bubbles having a relatively large diameter without using a net.

  Moreover, according to this invention, the said communication part has deviated with respect to the central-axis direction of the said cylindrical body with respect to the communication part of an adjacent partition plate. Therefore, the air and liquid that have passed through the communication portion collide against the communication portion of the adjacent partition plate. Therefore, since air and liquid collide with the partition plate in this way, the raised air and liquid can be disturbed by the adjacent partition plate.

  Furthermore, according to the present invention, the pump-type foaming container is provided with the foam-forming device, so that the same actions and effects as described above can be achieved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Pump type foaming container]
FIG. 1 is an overall sectional view of a pump type foaming container according to the present invention. FIG. 2 is a partial cross-sectional view of the pump type foaming container according to the present invention. In FIG. 2, the left half shows a state where each piston before pressing the nozzle body is at the upper limit position, and the right half shows a state where the nozzle body is pushed down to the lower limit position when in use.

  The pump-type foaming container 1 is a pump-type foaming container provided with a nozzle body that discharges a foam-like material by moving forward and backward, and the container body 2 and an opening fixed to the opening end side of the container body 2 A flange 3, a nozzle body 4 fixed in the container body 2, and an overcap 5 attached to the opening flange 3 are provided.

  The container body 2 is made of a transparent resin and has a cylindrical shape. A groove that can be fitted to the opening flange 3 is formed on the outer peripheral surface of the opening end of the container body 2. The opening flange 3 is formed by integrally forming a bottom surface portion 6 and a side wall portion 7 formed in a vertical direction from the bottom surface portion 6. The bottom surface portion 6 has a through hole 6A in the center portion thereof. The nozzle body 4 operates in the through hole 6A. Further, the inner peripheral surface of the side wall portion 7 is formed with a groove that can be fitted into the groove of the container body 2 described above.

  The nozzle body 4 includes a nozzle body button 4 </ b> A, a double cylinder 8, an air piston 9, and a liquid piston 10. The nozzle body button 4A comes into contact with the double cylinder 8 and moves the air piston 9 and the liquid piston 10 forward and backward. Further, a passage through which the formed foam is passed is formed in the nozzle body button 4A. The double cylinder 8 is formed by coaxially and integrally forming an air cylinder 11 and a liquid cylinder 12.

  The air cylinder 11 has a cylindrical shape. On the inner peripheral surface of the opening edge of the air cylinder 11, a locking portion 13 is formed to lock the backward movement of the air cylinder sliding seal portion 22 described later. The locking portion 13 is formed upright in the direction of the central axis of the air cylinder 11. Further, a through hole 11 </ b> A through which air in the container body 2 and the air cylinder 11 flows is formed in the opening edge side wall surface of the air cylinder 11. The through hole 11A is formed so as to reduce in diameter from the outer peripheral surface of the air cylinder 11 toward the inner peripheral surface.

  A cylindrical outer stem 14 and an inner stem 15 are provided in the air cylinder 11. The outer stem 14 is provided coaxially so as to surround the outer periphery of the inner stem 15, and forms an outer stem passage 14 </ b> A having a hollow central portion. The inner stem 15 is also an inner stem passage 15A having a hollow central portion.

  A ball valve seat 16 whose diameter decreases toward the center is formed at one end in the outer stem 14. The ball valve seat 16 is provided with a ball valve 17. The material of the ball valve 17 is not particularly limited, but is made of stainless steel in the present embodiment. A through hole 18 through which external air passes is formed near the ball valve seat 16 on the outer peripheral wall of the outer stem 14.

  On the other hand, the liquid cylinder 12 has a hollow cylindrical shape at the center, and its inner diameter is smaller than that of the air cylinder 11. An urging member 19 is disposed in the liquid cylinder 12. The biasing member 19 is a spring formed in a spiral shape.

  The liquid cylinder 12 is provided with a locking member 20 that locks the reverse movement of the liquid cylinder sliding seal portion 23 described later on the periphery of the liquid cylinder 12. The locking member 20 is fixed so as to sandwich the inner wall and the outer wall of the liquid cylinder 12. A pipe 21 made of transparent resin is provided below the liquid cylinder 12.

  The air piston 9 includes an air cylinder sliding seal portion 22 that slides on the inner wall of the air cylinder 11, and moves forward and backward in the air cylinder 11.

  The cylinder sliding seal portion 22 for air is formed in a cylindrical shape substantially in a cross-sectional view. Further, the air cylinder sliding seal portion 22 has a concave contact surface with the inner wall of the air cylinder 11 and makes point contact with the inner wall of the air cylinder 11 at two points.

  The liquid piston 10 includes a liquid piston main body 10A having a hollow cylindrical shape at the center, a liquid cylinder sliding seal portion 23 provided on the outer periphery of the liquid piston main body 10A, and a foam forming device 31. The air piston 9 is moved backward in the air cylinder 11 to take in the liquid.

  The liquid piston 10A has a liquid piston passage 10B having a hollow central axis. A ball valve 26 is provided below the liquid piston 10. The material of the ball valve 26 is not particularly limited, but is made of stainless steel in the present embodiment.

  The liquid cylinder sliding seal portion 23 is urged by the urging member 19 provided in the liquid cylinder 12 so as to escape from the liquid cylinder 12, and slides on the inner wall of the liquid cylinder 12. The liquid cylinder sliding seal portion 23 is formed in a substantially cylindrical shape in cross-sectional view. In addition, the liquid cylinder sliding seal portion 23 has a concave contact surface with the inner wall of the liquid cylinder 12, and the inner wall of the liquid cylinder 12 moves forward and backward (up and down in the figure) at two points. Point contact with.

  The foam forming device 31 mixes the air in the air cylinder 11 and the liquid in the liquid cylinder 12 by moving the air piston 9 forward in the air cylinder 11. The foam forming device 31 is a space formed at the opening end of the outer stem 14 on the backward direction side (upward in the drawing).

  FIG. 3 is a side sectional view of the foam forming apparatus. FIG. 4 is a plan view (partition plate in FIG. 3A) (A) and (partition plate in FIG. 3B) (B) of the partition plate of the foam forming apparatus. FIG. 5 is a plan view (partition plate in FIG. 3A) (A) and (partition plate in FIG. 3B) (B) of a modified example of the partition plate of the foam forming apparatus.

  Specifically, the foam forming device 31 includes a cylindrical body 32 and a plurality of partition plates 33 arranged in the cylindrical body 32 at predetermined intervals in the axial direction.

  The cylindrical body 32 is formed on the opening end side of the outer stem 14 on the backward direction side (the upward direction in the drawing).

  On the other hand, the partition plate 33 has a central shaft portion 33 </ b> A formed integrally with the plurality of partition plates 33 on the center axis of the plurality of partition plates 33.

  Here, the partition plate 33 partitions and forms a space in which air and liquid are mixed. However, the number of the partition plates 33 is not particularly limited as long as a plurality of the spaces are formed. The number of the partition plates 33 is appropriately set according to the intended diameter of foam to be formed and the amount of foam to be formed. The number of partition plates 33 can be, for example, about 3 to 10 sheets.

  Moreover, the arrangement | positioning space | interval of the partition plates 33 is suitably set according to the diameter of the foam to form and the quantity of the foam to form. In addition, the arrangement | positioning space | interval of the partition plates 33 is good also as a fixed space | interval, and good also as various space | intervals.

  In addition, the partition plate 33 includes a communication portion 35 that communicates adjacent spaces 34 defined by the cylindrical body 32 and the plurality of partition plates 33.

  In the communication portion 35, air and liquid that have entered the space 34 through the communication portion 35 substantially rise toward the adjacent partition plate 33, and the raised air and liquid are adjacent to the partition plate. What is necessary is just to be formed in each partition plate 33 so that it may be disturbed by 33 and may enter the next space 34 through the communication part 35 formed in the partition plate 33.

  The communication portion 35 is preferably deviated from the communication portion 35 of the adjacent partition plate 33 with respect to the central axis X direction of the cylindrical body 32 (for example, FIGS. 4A and 4B). See).

  The communication portion 35 may be a single through hole or a plurality of through holes. There is no restriction | limiting in particular as a shape of the communication part 35, A horizontal cross section view, circular shape (FIG. 4), elliptical shape (FIG. 5), semicircle shape, polygonal shape, etc. can be mentioned.

  The magnitude | size of the communication part 35 is suitably set according to the diameter of the foam to form and the quantity of the foam to form.

[Operation of pump type foaming container]
The operation of the pump type foaming container 1 will be described below with reference to FIGS.

[Operation when the nozzle body 4 moves forward (lowering of the nozzle body 4 in FIG. 2) (1)]
First, when using the pump type foaming container 1, the overcap 5 is removed. Then, the nozzle body button 4A is pushed in. Then, the air cylinder sliding seal portion 22 and the outer stem 14 pushed by the nozzle body button 4A are pushed.

  The volume in the air cylinder 11 is compressed by the air cylinder sliding seal portion 22, that is, the pressure in the air cylinder 11 is increased (from the state shown in the left half to the right in FIG. 2). Changes to the state shown in half). At this time, external air enters through a gap between the air cylinder sliding seal portion 22 and the nozzle body button 4A. Since the air that has entered passes through the through hole 18, the ball valve 17 opens the outer stem passage 14 </ b> A.

  Moreover, 11 A of through-holes are open | released because the cylinder sliding seal part 22 for air advances. At this time, the pressure outside the air cylinder 11 and the pressure outside the pump-type foaming container 1 (atmospheric pressure) are the same. And when the pressure in the container main body 2 is lower than the pressure outside the cylinder 11 for air, the air outside the pump type foam container 1 flows into the container main body 2 through the through hole 11A. And the pressure in the container main body 2 will be maintained similarly to the pressure (atmospheric pressure) outside the pump type foaming container 1.

  On the other hand, when the outer stem 14 is pushed in, the inner stem 15, the liquid piston 10, and the liquid cylinder sliding seal portion 23 are pushed in the forward direction. Then, the urging member 19 disposed in the liquid piston 10 is compressed (changes from the state shown in the left half to the state shown in the right half in FIG. 2).

[Operation when the nozzle body 4 moves backward (in FIG. 2, the nozzle body 4 rises) (2)]
Next, the compressed urging member 19 urges the liquid piston 10 in the backward direction of the nozzle body 4 (in the upward direction of the nozzle body 4 in FIG. 2). Then, the volume in the liquid piston 10 is increased, so that the pressure in the liquid piston 10 is reduced. When the pressure in the liquid piston 10 is reduced, the ball valve 26 is lifted and the liquid piston passage 10B of the liquid piston main body 10A is opened.

  Then, the liquid stored in the container main body 2 is drawn into the liquid piston main body 10A. The liquid drawn into the liquid piston body 10A fills the inner stem passage 15A and the outer stem passage 14A (changes from the state shown in the right half to the state shown in the left half in FIG. 2).

  When the nozzle body 4 moves backward (in FIG. 2, the nozzle body 4 rises), the air cylinder sliding seal portion 22 is locked by contacting the locking portion 13. Further, the liquid cylinder sliding seal portion 23 is locked by contacting the locking member 20.

[Operation when the nozzle body 4 moves forward again (lowering of the nozzle body 4 in FIG. 2) (3)]
Next, the nozzle body button 4A is pushed again from the state in which the liquid is filled in the inner stem passage 15A and the outer stem passage 14A. Then, the air cylinder sliding seal portion 22 and the outer stem 14 pushed by the nozzle body button 4A are pushed. The volume in the air cylinder 11 is compressed by the air cylinder sliding seal portion 22. At this time, external air enters through a gap between the air cylinder sliding seal portion 22 and the nozzle body button 4A. Since the air that has entered passes through the through-hole 18, the ball valve 17 opens the outer stem passage 14A (changes from the state shown in the left half to the state shown in the right half in FIG. 2).

  Then, the liquid is pushed out from the opened outer stem passage 14A. The extruded liquid is mixed with air in the bubble forming device 31 filled with air. Specifically, it operates as follows.

[Function of foam forming device]
Here, FIG. 6 is a conceptual diagram showing the operation of the foam forming apparatus according to the present invention. First, the communication portion 35 is deviated from the communication portion 35 of the adjacent partition plate 33 with respect to the central axis X direction of the cylindrical body 32. Therefore, the air and liquid that have passed through the communication portion 35 collide against the communication portion 35 of the adjacent partition plate 33 (see FIG. 6). Therefore, since air and liquid collide with the partition plate 33 in this way, the raised air and liquid can be disturbed in the space 34 by the adjacent partition plate 33.

  Disturbed air and liquid mix. Bubbles are formed by the mixed air and liquid (see FIG. 6).

  The formed foam is discharged out of the pump type foaming container 1 through a passage in the nozzle body button 4A.

  Thereafter, the pump-type foaming container repeats the operations (1) to (3) described above.

According to this embodiment as described above, the following effects are obtained.
(1) Since a conventional net is not used, the liquid components do not clog. Therefore, bubbles can be formed uniformly.

(2) Since the raised air and liquid are disturbed by the adjacent partition plate 33, a coarse bubble having a relatively large diameter can be formed without using a net.

  It should be noted that the present invention is not limited to the above-described embodiment, and modifications and improvements within the scope that can achieve the object of the present invention are included in the present invention.

FIG. 1 is an overall cross-sectional view of a pump type foaming container according to the present invention. FIG. 2 is a partial cross-sectional view of a pump type foaming container according to the present invention. FIG. 3 is a side sectional view of the foam forming apparatus according to the present invention. 4 is a plan view of the partition plate of the foam forming apparatus according to the present invention (partition plate of FIG. 3A) (A) and (partition plate of FIG. 3B) (B). FIG. 5 is a plan view (partition plate in FIG. 3A) (A), (partition plate in FIG. 3B) (B) of a modification of the partition plate of the foam forming apparatus according to the present invention. is there. FIG. 6 is a conceptual diagram showing the operation of the foam forming apparatus according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pump type foaming container 2 Container body 3 Opening flange 4 Nozzle body 5 Overcap 6 Bottom face part 6A Through hole 7 Side wall part 8 Double cylinder 9 Piston for air 10 Piston for liquid 10A Liquid piston main body 10B Liquid piston passage 11 Air cylinder 11A Through hole 12 Liquid cylinder 13 Locking portion 14 Outer stem 14A Outer stem passage 15 Inner stem 15A Inner stem passage 16 Ball valve seat 17 Ball valve 18 Through hole 19 Energizing member 20 Locking member 21 Pipe 22 Air Cylinder sliding seal portion 23 Liquid cylinder sliding seal portion 26 Ball valve 31 Foam forming device 32 Cylindrical body 33 Partition plate 33A Central shaft portion 34 Space 35 Communication portion X Central axis

Claims (2)

A cylindrical body in which air is not introduced from the peripheral side surface by not having a fluid ejection port on the peripheral side surface, and a plurality of partition plates arranged at predetermined intervals in the axial direction in the cylindrical body,
The plurality of partition plates each have one or more through-holes communicating between adjacent spaces partitioned by the cylindrical body and the plurality of partition plates,
The through hole of the adjacent partition plate and the center of the cylinder so that the air and liquid that have entered the space through the through hole rise and collide with the adjacent partition plate Deviation with respect to the axial direction is formed in the partition plate, and the raised air and liquid are disturbed by the adjacent partition plate, and enter the next space through the through hole formed in the partition plate. A foam forming apparatus formed on each partition plate. A pump type foaming container comprising the foam forming apparatus according to claim 1 .

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