JPH09118351A - Container with foam ejecting pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow an ejection state of foam to be altered as necessary in a container including a foam ejecting pump. SOLUTION: A pump head 100 of a foam ejecting pump 10 is made in a double-tube structure comprising an outer cylinder member 110 and an inner cylinder member 120, while a small diameter ejection hole 121a and a large diameter ejection hole 121b are opened on a small diameter part 121 on an upper part of the inner cylinder member 120. An opening 115a is provided on a cylinder 115 extending downward from a top plate 114 of the outer cylinder member 110, the cylinder 115 is liquid-tightly inserted into the small diameter part 121, and the outer cylinder member 110 is attached to the outside of the inner cylinder member 120 so that it can relatively rotate. By rotating the outer cylinder member 110 with respect to the inner cylinder member 120, one of the small diameter ejection hole 121a and the large diameter ejection hole 121b is connected to the opening 115a, thereby changing an ejection state of bubbles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container equipped with a foam jet pump.

[0002]

2. Description of the Related Art As a container with a foam jet pump, for example, the one disclosed in International Publication No. W092 / 08657 is known.

In a conventional container with a foam jet pump, there is only one form of foam blowing, and the form is uniquely determined by the opening shape and opening size of the jet outlet.

[0004]

By the way, depending on the purpose of use of the container with the foam jet pump, for example, the foam may be jetted largely in the vicinity of the jet port, or locally jetted in a place away from the jet port. Sometimes you want to change the shape of the bubbles. However, the conventional container with a foam jet pump can only provide one jetting form, and cannot meet such a demand.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a container with a foam jet pump capable of changing the foam jetting form as needed. .

[0006]

The present invention adopts the following means in order to solve the above problems. According to the present invention, a foam jet pump is attached to the mouth and neck of a container body, and the foam jet pump includes a liquid cylinder in which a first piston slides inside, and an air cylinder in which a second piston slides inside. A pump head provided with a jet port and connected to the first piston and the second piston to drive both pistons, and a gas-liquid mixing chamber in which the liquid delivered from the liquid cylinder and the air delivered from the air cylinder join together. And a foaming member installed between the jet port and the gas-liquid mixing chamber, the liquid inside the container and the outside air are brought together in the gas-liquid mixing chamber by pushing down the pump head, and foaming is performed through the foaming member. In a container with a foam jet pump that spouts in a foam state from a jet port, the pump head has a double pipe structure including an inner tubular member and an outer tubular member that are rotatably fitted to each other. The spout is provided outer tubular member, the inner tubular member includes a bubble flow portion positioned on the downstream side of the foamed member, is provided with a plurality of different ejection holes of diameter in the bubble flow portion,
By relatively rotating the outer tubular member and the inner tubular member,
A container with a foam jet pump, characterized in that the jet outlet of the outer tubular member is located in front of and communicates with one of the jet holes of the inner tubular member, and the other jet port is closed (claim 1). Corresponding to).

The foamed member can be composed of a mesh having a predetermined mesh size. The foaming member can be housed in the inner tubular member of the pump head, but may be attached to another member disposed upstream of the inner tubular member.

In this container with a foam jet pump, it is preferable to provide a position of the outer tubular member that can close the jet port without connecting it to any of the jet holes of the inner tubular member (corresponding to claim 2). .

According to the present invention, a foam jet pump is attached to the mouth and neck of the container body. The foam jet pump is for a liquid cylinder in which the first piston slides inside and for air in which the second piston slides inside. A cylinder, a pump head which is provided with an ejection port and which is connected to the first piston and the second piston and drives both pistons, a gas in which the liquid delivered from the liquid cylinder and the air delivered from the air cylinder join together. A liquid mixing chamber and a foaming member installed between the jet outlet and the gas-liquid mixing chamber are provided, and by depressing the pump head, the liquid in the container body and the outside air are merged in the gas-liquid mixing chamber, and foaming is performed. In a container with a foam ejection pump that foams through a member and ejects in a foam state from the ejection port, a nozzle attack that can reduce the diameter of the bubble ejected at the ejection port of the pump head. A bubble jet pump with a container, characterized in that the instrument is attached (corresponding to claim 3).

The nozzle attachment comprises a tubular body portion attached to the ejection port, and a closing body rotatably provided at the tip of the tubular body portion via a hinge to open and close the tip end opening of the tubular body portion. Can be provided with a jet nozzle having a diameter smaller than that of the tip end opening of the cylindrical body (corresponding to claim 4).

Further, the nozzle attachment may be formed in a cap shape which is detachably attached to the ejection port of the pump head, and a small diameter ejection hole may be formed at the tip of the cap attachment.

[0012]

FIG. 1 is a block diagram showing an embodiment of the present invention.
From now on, description will be made with reference to the drawing of FIG.

[First Embodiment] First, a container with a foam jet pump according to a first embodiment of the present invention will be described with reference to the drawings of FIGS. 1 to 9.

FIGS. 1 and 2 are vertical cross-sectional views of a container with a foam jet pump according to the first embodiment, and FIGS.
Is an enlarged view of a main part.

<Structure> First, the structure of the container with the foam jet pump will be described. The container with a foam ejection pump is configured by attaching a foam ejection pump 10 to the mouth / neck portion 2 of a container body 1. The container body 1 contains a liquid having a foaming property such as facial cleansing liquid.

The foam jet pump 10 includes a cylinder member 20.
, Liquid suction valve 30, stem 40, and first piston 50
A second piston 60, a liquid discharge valve 70, a first air intake valve 80, a second air intake valve 90, and a pump head 10.
0, a foaming unit 130, and a mounting cylinder 150.

The cylinder member 20 has an annular flange portion 21 at the upper end, and a cylindrical large-diameter cylinder portion (air cylinder) 22 having an air chamber inside extends downward from the flange portion 21 and the inside is a liquid chamber. A cylindrical small-diameter cylinder portion (liquid cylinder) 24 extends concentrically downward from the bottom plate portion 23 of the large-diameter cylinder portion 22, and a connecting cylinder 25 extends downward from the lower end of the small-diameter cylinder portion 24. There is.

The cylinder member 20 has a large-diameter cylinder portion 22, a small-diameter cylinder portion 24, and a connecting cylinder 25 inserted into the container body 1 from the mouth / neck portion 2, and is flanged on a packing 200 arranged on the upper surface of the mouth / neck portion 2. The portion 21 is placed and fixed to the container body 1 by a mounting cylinder 150 that is screwed into the mouth / neck portion 2. The flange portion 21 is provided with a plurality of air holes 27 at a portion located inside the mouth / neck portion 2.

A suction pipe 201 is connected to the connecting cylinder 25 of the cylinder member 20, and the lower end of the suction pipe 201 extends to the bottom of the container body 1.

A central cylinder portion 151 is provided at the center of the mounting cylinder 150, and the pump head 100 projects vertically from the central cylinder portion 151. Pump head 10
A foaming unit 130 is mounted inside 0, and a stem 40 that moves up and down in the cylinder member 20 is connected and fixed to the lower portion of the pump head 100. A liquid discharge valve 70 is provided inside the stem 40, and a second piston 60 that slides airtightly on the inner peripheral surface of the large diameter cylinder portion 22 is attached to the outer peripheral portion of the stem 40. A second air intake valve 90 is attached to the second piston 60.
A first piston 50 that slides in a liquid-tight manner on the inner peripheral surface of the small-diameter cylinder portion 24 is connected to the lower portion of the stem 40.
Below the piston 50, a liquid suction valve 3 that operates in communication with the stem 40 and the first piston 50 to open and close the connection cylinder 25.
0 is arranged.

Each configuration will be described in detail below. The liquid suction valve 30, the coil spring 39, and the first piston 50 are housed in the small-diameter cylinder portion 24 of the cylinder member 20. The lower end of the liquid suction valve 30 is formed in a lower valve body 31 that can be seated on and separated from a valve seat 24a formed of a tapered surface formed on the lower end of the small-diameter cylinder portion 24.
Open and close 5.

In the liquid suction valve 30, a plurality of engaging pins 32 projecting outward are provided above the lower valve body 31, and the engaging pins 32 are provided at the lower end of the small diameter cylinder portion 24. It is vertically movably inserted between the plurality of vertical ribs 26.

The liquid suction valve 30 has a large diameter portion 33 above the engagement pin 32, and a small diameter portion 34 is connected to the upper portion of the large diameter portion 33. Vertical grooves 33 extending in the vertical direction are formed on the outer peripheral surface of the large diameter portion 33 and the outer peripheral surface of the small diameter portion 34, respectively.
a and 34a are formed. The upper end of the liquid suction valve 30 connected to the small-diameter portion 34 is a tapered cylindrical upper valve body 35 whose diameter increases as it goes upward.

The first piston 50 is in the shape of a hollow cylinder whose upper and lower sides are open, and the lower part thereof is a seal portion 51 that slides liquid-tightly on the inner peripheral surface of the small diameter cylinder portion 24. The peripheral edge of the upper opening is a valve seat 52.

The upper valve body 35 of the liquid suction valve 30 projects upward from the upper opening of the first piston 50,
Can be seated on and separated from the valve seat 52, and opens and closes the upper opening of the first piston 50.

In the first piston 50, a small diameter portion 34 of the liquid suction valve 30 is usually provided in the first piston 50 as shown in FIG.
It is inserted with a sufficient gap between it and the inner peripheral surface of
As shown in FIG. 2, when the pump head 100 is pushed down to lower the stem 40, the large diameter portion 3 of the liquid suction valve 30 is
3 is capable of entering with a slight gap between it and the inner peripheral surface of the first piston 50, and in that case, the vertical groove 33a secures the liquid flow path.

The coil spring 39 is used for the cylinder member 2.
It is provided between the upper end of the vertical rib 26 at 0 and the first piston 50, and urges the first piston 50 upward.
On the other hand, the engagement pin 32 of the liquid suction valve 30 can be hooked on the lower end of the coil spring 39 from below, thereby restricting the upper limit of upward movement of the liquid suction valve 30.

The stem 40 is in the shape of a cylinder whose top and bottom are open, and is housed in the large diameter cylinder portion 22 and the small diameter cylinder portion 24 so as to be vertically movable. At the bottom of the stem 40 is the first
The upper part of the piston 50 is inserted and fixed, and the stem 40
The seal portion 51 is projected from the lower portion of the.

An annular valve seat 41 is formed on the inner upper portion of the stem 40 so as to project in a substantially L-shaped cross section. Stem 40
Inside, and above the valve seat 41 is a gas-liquid mixing chamber 46, in which a spherical liquid discharge valve 70 that can be seated on and separated from the valve seat 41 is movably accommodated.

Inside the stem 40, a plurality of vertical ribs 42 extending in the vertical direction are provided in a circumferentially dispersed manner in a portion from above the portion where the first piston 30 is fixed to the lower portion of the valve seat 41. Has been. Inside the vertical rib 42,
As shown in FIG. 2, when the pump head 100 is pushed down to lower the stem 40, the upper valve body 3 of the liquid suction valve 30 is
5 and the small diameter portion 34 are allowed to enter, and at this time, the space between the vertical ribs 42 and the vertical groove 34a in the small diameter portion 34 of the liquid suction valve 30 serves as a liquid passage.

The pump head 100 connected to the upper portion of the stem 40 has an outer tubular member 110 and an inner tubular member 120. The inner tubular member 120 has a hollow tubular shape with upper and lower openings, and from the top, a small diameter portion (foam circulation portion) 121 and a medium diameter portion 1
22 and a large-diameter portion 123. Below the large-diameter portion 123, a skirt cylinder portion 124 having a larger diameter than the large-diameter portion 123 is connected. A tubular valve body 125 is formed so as to project inside the skirt tubular portion 124 and on the downward extension of the large diameter portion 123.

In the small diameter portion 121 of the inner tubular member 120, two ejection holes 121a and 121b having different diameters are opened at positions separated by 180 degrees in the circumferential direction. The upper portion of the stem 40 is fitted and fixed inside the large diameter portion 123 of the inner tubular member 120. Further, on the inner peripheral surface of the large diameter portion 123, a plurality of vertical grooves 123a extending in the vertical direction are provided dispersed in the circumferential direction. The upper end of the vertical groove 123a extends slightly above the upper end of the stem 40, and
3a functions as an air flow path.

A foaming unit 130 is housed and fixed inside the middle diameter portion 122 of the inner tubular member 120. The foaming unit 130 is composed of a hollow cylindrical casing 131 having upper and lower openings, and two foaming elements 132 mounted on the casing 131. Casing 13
1 has a large diameter portion 131a on the upper side and a small diameter portion 131b on the lower side. The large diameter portion 131a is inserted and fixed inside the medium diameter portion 122 of the inner tubular member 120, and the small diameter portion 131b is radially inside the stem 40. Is inserted with a gap. A gap is also provided between the bottom of the large diameter portion 131a and the upper end of the stem 40, and these gaps function as air flow paths.

The foaming element 132 is constructed by attaching a net (foaming member) 133 to one end opening of a cylindrical body which is opened at the upper and lower sides, and the foaming element 132 arranged on the lower side in the casing 131 has a cylindrical body underneath. Net 13 at the side opening
3 is attached, and in the foaming element 132 arranged on the upper side in the casing 131, the cylindrical body 132a
A net 132b is attached to the upper opening of the.

A plurality of vertical grooves extending upward from the lower end surface of the small-diameter portion 131b of the casing 131 are formed on the inner peripheral surface of the lower portion of the casing 131. It is possible to secure the air flow path.

The outer tubular member 110 of the pump head 100 has a peripheral wall portion 111 having a cylindrical shape with a top, and a projecting portion 112 protruding laterally is provided on one upper side of the peripheral wall portion 111. The inside of the peripheral wall portion 111 is a stepped hole having a large diameter on the lower side and a small diameter on the upper side. On the other hand, the projecting portion 112 has a cylindrical shape with a tip that is opened as a jet opening 113 having a substantially rectangular shape.
13 is connected to the upper end of the stepped hole inside the outer tubular member 110. The shape of the ejection port 113 is not limited to a rectangle, and may be a circle, an ellipse, or the like.

A tubular portion 115 extends downward from the inner surface of the top plate portion 114 of the outer tubular member 110, and the tubular portion 115 has only one opening 115a. In this outer cylinder member 110, the cylinder portion 115 is connected to the small diameter portion 12 of the inner cylinder member 120.
1 is rotatably fitted in a liquid-tight manner inside the outer cylindrical member 1
A medium-diameter portion 122 of the inner tubular member 120 is rotatably fitted into the small-diameter portion of the stepped hole 10 in a liquid-tight manner, and a large-diameter portion 123 of the inner tubular member 120 is provided with a gap in the large-diameter portion of the stepped hole. It is inserted therein and is rotatably fitted onto the inner cylindrical member 120.

FIG. 5 is a cross-sectional view of the tubular portion 115 of the outer tubular member 110 and the small diameter portion 121 of the inner tubular member 120.
FIG. 6 is a cross-sectional view of a large diameter portion of a stepped hole of the outer tubular member 110 and a large diameter portion 123 of the inner tubular member 120.

As shown in FIG. 6, on the inner peripheral surface of the large-diameter portion of the stepped hole of the outer cylindrical member 110, 180 in the circumferential direction with respect to each other.
Stopper protrusions 116 that extend in the vertical direction are provided at positions apart from each other.
And overcoming protrusions 117 are formed one by one. On the other hand, on the outer peripheral surface of the large-diameter portion 123 of the inner tubular member 120, protrusions 123b that extend in the vertical direction are formed at positions 180 degrees apart from each other in the circumferential direction. Outer cylinder member 11
0 and the inner cylindrical member 120 are rotated relative to each other, the protrusion 123b of the inner cylindrical member 120 can get over the overhanging protrusion 117 with a predetermined resistance, but cannot go over the stopper protrusion 116. And the stopper protrusion 116 causes the outer cylindrical member 110 to
Rotation is regulated.

When the protrusion 123b is located between the stopper protrusion 116 and the overriding protrusion 117 as shown in FIG. 6, the opening 115 of the cylindrical portion 115 of the outer cylindrical member 110 is formed.
a and the small-diameter ejection hole 121a in the inner cylindrical member 120 communicate with each other, and the large-diameter ejection hole 121b is closed by the outer peripheral surface of the cylindrical portion 115. Then, in a state where the outer tubular member 110 is rotated with respect to the inner tubular member 120, the protrusion 123b is passed over the overriding protrusion 117 and the other stopper protrusion 117 180 degrees apart is locked, the opening of the tubular portion 115 is opened. 115a and large-diameter ejection hole 1 in the inner tubular member 120
21b communicate with each other, and the small-diameter ejection hole 121a is closed by the outer peripheral surface of the cylindrical portion 115.

The skirt cylinder portion 124 of the inner cylinder member 120 projects below the peripheral wall portion 111 of the outer cylinder member 110, and the skirt cylinder portion 124 and the peripheral wall portion 111 are attached to the mounting cylinder 15.
A central cylindrical portion 151 of 0 is inserted so as to be vertically movable. Vertical ribs 15 extending in the vertical direction are formed on the inner peripheral surface of the central tubular portion 151.
A large number of 1a are formed, and a large number of engaging projections 124a inserted between the vertical ribs 151a are formed at the lower end of the outer peripheral surface of the skirt cylinder portion 124 so as to project outward. As shown in FIG. 7, the lower end of the vertical rib 151a becomes thinner as it goes downward, and the upper end of the engaging projection 124a becomes thinner as it goes upward, and when the pump head 100 moves upward from below, the vertical rib 151a is formed. And the engaging projection 124a are guided by their respective tapered surfaces.

An annular flange portion 43 that projects outward is formed on the outer periphery of the stem 40 at approximately the middle in the vertical direction, and an annular standing wall 44 is formed on the upper surface of the flange portion 43.
Is projected upward. The inner peripheral surface of the standing wall 44 is formed into a tapered surface whose diameter increases as it goes upward.

A second piston 60 is fitted on the stem 40 between the flange portion 43 and the pump head 100 so as to be slightly vertically movable. The second piston 60 has a hollow cylindrical shape with an opening at the top and bottom, and the outermost portion is a seal cylinder portion 6 that airtightly slides on the inner peripheral surface of the large diameter cylinder portion 22 of the cylinder member 20.
1, the innermost part is formed in a base cylinder part 62 on which the stem 40 is fitted, and a seal cylinder part 61 and a base cylinder part 6 are formed.
2 are connected by a stepped tube portion 63 whose cross section is bent in a stepwise manner.

The upper portion of the base cylinder portion 62 is airtightly slidably pressed against the inner peripheral surface of the cylindrical valve body 125 of the pump head 100. Air holes 64 are dispersedly provided in a circumferential direction in a connecting portion between the base cylinder portion 62 and the stepped cylinder portion 63, and the air holes 64 are formed by relative vertical movement of the pump head 100 and the second piston 60. Open and close. That is, the pump head 100 and the second piston 60 move up and down relatively, so that the tubular valve body 125 of the pump head 100 causes the base tubular portion 62 and the stepped tubular portion 63.
The air hole 64 is closed when it hits the connecting portion with the air valve 64, and the air hole 64 is opened when the tubular valve body 125 separates from the connecting portion.

The lower end of the base tube portion 62 comes into contact with and separates from the inner peripheral surface of the standing wall 44 of the stem 40 by the relative vertical movement of the stem 40 and the second piston 60. A plurality of vertical grooves 45 extending in the vertical direction are provided in a circumferentially dispersed manner on the outer peripheral surface of the stem 40 where the base tube portion 62 is fitted. The lower end of the base tube portion 62 of the vertical groove 45 is the standing wall 4 of the stem 40.
4 is communicated with the inside of the large-diameter cylinder portion 22 and is cut off from the inside of the large-diameter cylinder portion 22 when the lower end of the base cylinder portion 62 contacts the standing wall 44.

A second air intake valve 90 is provided below the base tube portion 62.
Has been fixed. The second air intake valve 90 includes an upwardly tapered annular diaphragm 91 that extends radially outward from the lower end thereof. This diaphragm 91 has elasticity, and normally the outer peripheral edge of the diaphragm 91 is brought into pressure contact with the lower surface of the stepped cylinder portion 63 of the second piston 60 to seal, and the negative pressure in the large-diameter cylinder portion 22 causes The outer peripheral edge of the diaphragm 91 is pulled downward and operates so as to be separated from the stepped cylindrical portion 63.

By the way, the mounting cylinder 150 has a central cylindrical portion 151.
Has a cylindrical rib 152 on the outer side of the cylindrical rib 1
A first air intake valve 80 that seals between the mounting cylinder 150 and the inner peripheral surface of the large diameter cylinder portion 22 is fixed to the lower end of 52. First suction valve 8 that abuts the large-diameter cylinder portion 22
The seal tubular portion 81 of 0 has a tapered tubular shape, extends obliquely upward, and has elasticity, and the upper end portion of the seal tubular portion 81 is pulled inward in the radial direction due to the negative pressure in the container body 1. It operates so as to be separated from the inner peripheral surface of the large diameter cylinder portion 22.

The mounting cylinder 150 has a transparent cover 202.
Is detachably attached.

<Operation> Next, the operation of the container with the foam jet pump according to the first embodiment will be described. 1 and 3
Indicates a state before the pump head 100 is pushed down, that is, a state in which the pump head 100 is located at the upper limit. In this state, the liquid suction valve 30 is pushed up by the coil spring 39 via the first piston 50,
The lower valve body 31 is separated from the valve seat 24a of the cylinder member 20, and the inside of the small-diameter cylinder portion 24 is sucked up by the suction pipe 20.
It is in a state of communicating with the inside of the container body 1 via 1. The upper valve body 35 of the liquid suction valve 30 is seated on the valve seat 52 of the first piston 50 and closes the upper opening of the first piston 50. Second
The lower end of the base cylinder portion 62 of the piston 60 abuts on the standing wall 44 of the stem 40, and the first air intake valve 80 moves the second piston 60.
Is pressed against the large-diameter cylinder portion 22 of the cylinder member 20, and the lower end of the cylindrical valve body 125 of the pump head 100 is separated from the stepped cylindrical portion 63 of the second piston 60.
The air hole 64 is open.

When the pump head 100 is pushed down from this state, the stem 40 and the first piston 50 are lowered together with the pump head 100, and as a result, the valve seat of the first piston 50 as shown in FIG. 52 to liquid suction valve 30
The upper valve element 35 is separated, and the upper opening of the first piston 50 is opened. Almost at the same time, the inside of the small diameter cylinder portion 24 is pressurized by the lowering of the first piston 50, the liquid suction valve 30 is lowered by the hydraulic pressure in the small diameter cylinder portion 24, and the lower valve body 31 is seated on the valve seat 24a. The lower opening of the small diameter cylinder portion 24 is closed. On the other hand, the second piston 6
0 is stopped by the frictional force between the seal cylinder portion 61 and the large-diameter cylinder portion 22 immediately after the pump head 100 is pushed down.
The lower end of the base tubular portion 62 of the piston 60 is separated from the standing protrusion 44 of the stem 40, and the tubular valve element 12 of the pump head 100 is
The lower end of 5 abuts the stepped cylinder portion 63 of the second piston 60 to close the air hole 64.

After the lower end of the tubular valve body 125 of the pump head 100 hits the stepped tubular portion 63 of the second piston 60, the second piston 60 is also integrated with the pump head 100, the stem 40 and the first piston 50. And then descend.

After that, when the pump head 100 descends, the liquid in the small-diameter cylinder portion 24 pressurized by the first piston 30 flows through the upper opening of the first piston 30 and the vertical grooves 33a, 34a of the liquid suction valve 30. As a result, it is pushed out above the upper valve body 35 through the vertical ribs 42 of the stem 40, and further the liquid discharge valve 70 is pushed up by the liquid pressure to flow into the gas-liquid mixing chamber 46 (see FIG. 2). On the other hand, the air contained in the large-diameter cylinder portion 22 passes between the flange portion 43 and the rising protrusions 44 of the stem 40 and the lower end of the base cylinder portion 62 of the second piston 60, and passes through the vertical groove 4 of the stem 40.
5, the inner cylindrical member 12 of the pump head 100.
The gas flows into the gas-liquid mixing chamber 46 through the vertical groove 123a of 0 and further through the passage between the casing 131 of the foaming unit 130 and the stem 40.

Then, the liquid and the air are merged and mixed in the gas-liquid mixing chamber 46, and are sent into the foaming unit 130.
Then, when the liquid passes through the upper and lower nets 133 of the foaming unit 130, the liquid is foamed and is extruded in the tubular portion 115 of the pump head 100 in a foam state. This bubble is
The pump head 100 passes through the opening 115a of the cylindrical portion 115 and the small-diameter ejection hole 121a of the small-diameter cylindrical member 120.
It spouts from the spout 113 of. FIG. 8 shows a jetting state of bubbles at this time, and the bubbles are jetted vigorously in a finely focused state.

By the way, before pushing down the pump head 100, the outer cylinder member 110 of the pump head 100 is rotated by 180 degrees with respect to the inner cylinder member 120, and the outer cylinder member 11 is rotated.
The opening 115a of the tubular portion 115 at 0
When the pump head 100 is pushed down in this state while being communicated with the large-diameter jet hole 121b of 0, thick bubbles are jetted from the jet port 113 as shown in FIG. The force of jetting bubbles at this time is weaker than the case where the bubbles are jetted by passing through the small-diameter jet holes 121a.

That is, in this container with a foam jet pump, by appropriately selecting the circumferential relative positions of the outer tubular member 110 and the inner tubular member 120 of the pump head 100, either large or small jet holes 121a, 121b can be formed. It is possible to select and pass a bubble through it to change the jetting form of the bubble.

When the pump head 100 is pushed down and the finger is released from the pump head 100, the small diameter cylinder portion 2
4 and the air pressure in the large-diameter cylinder portion 22 are lowered, the liquid discharge valve 70 is seated on the valve seat 41, and the elasticity of the coil spring 39 causes the first piston 50 and the stem 4 to move.
0, the pump head 100 is pushed up.

Here, the second piston 60 is the stem 40
Immediately after the start of pushing up, it is stopped by the frictional force between the seal cylinder portion 61 and the large diameter cylinder portion 22, and as a result of the stem 40 rising in that state, the inner peripheral surface of the upstanding projection 44 of the stem 40 causes the second piston 60 to move. Is pressed against the lower end of the base tube portion 62 of
The inside of the large-diameter cylinder portion 22 and the vertical groove 45 of the stem 40 are cut off from each other. At the same time, the lower end of the tubular valve element 125 of the pump head 100 is separated from the stepped tubular portion 63 of the second piston 60, and the air hole 64 is opened.

After the inner peripheral surface of the upright projection 44 hits the lower end of the base tube portion 62, the first piston 50 and the stem 40
Then, the second piston 60 and the pump head 100 rise together.

When the first piston 50 rises, the inside of the small-diameter cylinder portion 24 becomes negative pressure, which pulls up the liquid suction valve 30 and the lower valve body 31 separates from the valve seat 24a.
The inside of the small diameter cylinder portion 24 communicates with the inside of the container body 1. As a result, the liquid in the container body 1 is sucked up into the small diameter cylinder portion 24 as the first piston 50 rises.

When the liquid is pumped up into the small-diameter cylinder portion 24, the inside of the container body 1 becomes negative pressure.
The seal cylinder portion 81 of the air intake valve 80 has the large diameter cylinder portion 22.
Is attracted in a direction away from the inner peripheral surface of the, and a gap is created between the inner peripheral surface and the large-diameter cylinder portion 22.

Further, as the second piston 60 rises, the inside of the large-diameter cylinder portion 22 also becomes negative pressure, which causes the diaphragm 91 of the second air intake valve 90 to be pulled downward,
The second piston 60 is separated from the stepped cylinder portion 63 to form a gap.

First air intake valve 80 and second air intake valve 9
As a result of 0 operating in this manner, outside air is introduced between the central cylinder portion 151 of the mounting cylinder 150 and the pump head 100.
It is sucked into 50. Then, a part of the air enters the large-diameter cylinder portion 22 through the air hole 64 of the second piston 60, and the other air enters the container body 1 through the air hole 27 of the flange portion 21 of the cylinder member 20. enter. As a result, the inside of the large-diameter cylinder portion 22 and the inside of the container body 1 become equal in pressure to the atmospheric pressure, the first piston 50 and the second piston 60 are smoothly raised, and the liquid is pumped up into the small-diameter cylinder portion 24. Is done smoothly.

When the pump head 100 returns to the upper limit position, the initial state shown in FIGS. 1 and 3 is obtained.

[Second Embodiment] FIGS. 10 and 11 are views showing a second embodiment. The basic structure of the container with a foam jet pump in the second embodiment is the same as that of the first embodiment, and the difference is that the pump head 100
Is part of the configuration.

Pump head 1 in the second embodiment
In 00, the outer tubular member 110 can be stopped at a position where the opening 115a of the outer tubular member 110 is closed without being connected to any of the ejection holes 121a and 121b of the inner tubular member 120.

The structure will be described with reference to FIGS. 10 and 11.
FIG. 7 is a transverse sectional view corresponding to FIGS. 5 and 6 in the first embodiment. As shown in FIG. 11, the outer tubular member 110
On the inner peripheral surface of the peripheral wall portion 111 at
6 and the overriding protrusion 117, a pair of overriding protrusions 118a, 118b are provided at positions that are 180 degrees apart from each other in the circumferential direction.

When the projection 123b of the inner cylindrical member 120 is located between the overriding projections 118a and 118b,
As shown in FIG. 10, the tubular portion 11 of the outer tubular member 110
The opening 115a of No. 5 is the ejection hole 121 of the inner tubular member 120.
The inner tubular member 120 does not communicate with either a or 121b.
Is closed by the inner peripheral surface of the small diameter portion 121, and at the same time, the ejection holes 121a and 121b are also cylindrical.
The outer peripheral surface is closed.

When the opening 115a can be closed in this way, the inside of the inner tubular member 120 can be prevented from drying. When the inside of the inner tubular member 120 dries, some of the bubbles are solidified in a state of adhering to the mesh 133, the mesh of the mesh 133 is blocked, and the foam formation becomes insufficient or unstable during the subsequent pump operation. However, there is no such problem in the second embodiment.

When the outer tubular member 110 is rotated with respect to the inner tubular member 120 from the state shown in FIGS. 10 and 11, the protrusion 123b can pass over the protrusion 118a or 118b, and the opening 115a can be ejected through the ejection hole 121a or. It can be connected to 121b.

[Third Embodiment] Next, a container with a foam jet pump according to a third embodiment of the present invention will be described with reference to FIGS. 12 to 15.

FIG. 12 is a vertical sectional view of a container with a foam jet pump according to the third embodiment. The difference between the third embodiment and the first embodiment lies in the pump head 100, and the other configurations are the same as those in the first embodiment.
Only the differences will be described below, and the same components as those of the container with the foam jet pump according to the first embodiment will be denoted by the same reference numerals and description thereof will be omitted.

Pump head 1 in the third embodiment
00 does not have two parts, an outer cylinder member and an inner cylinder member, as in the first embodiment, but the parts corresponding to these members are formed as one integral part.

That is, the pump head 100 has the outer cylindrical portion 10
1, the inner cylinder portion 102, and the top plate portion 103 are integrally formed, and the ejection port 1 is formed on one side of the upper portion of the outer cylinder portion 101.
04 is opened, the upper part of the stem 40 is inserted and fixed to the lower part of the inner tubular part 102, and the foaming unit 130 is housed and fixed to the upper part of the inner tubular part 102. The foaming unit 130 is connected to the ejection port 104 via a foam passage 105 provided in the pump head 100.

Further, a vertical groove 102a corresponding to the vertical groove 123a in the first embodiment is formed in a portion of the inner peripheral surface of the inner cylindrical portion 102 where the stem 40 is fitted therein. The lower end portion 102b of the portion 102 has the same function as the tubular valve body 125 in the first embodiment, and opens and closes the air hole 64 of the second piston 60.

In the third embodiment, the spout 10
The nozzle attachment 300 is attached to the nozzle 4. As shown in FIG. 13 to FIG. 15, the nozzle attachment 300 has a tubular body portion 3 having a rectangular cross section with a foam passage inside.
01 and a closing body 303 that is provided at the tip of the cylindrical body portion 301 so as to be vertically rotatable via a hinge portion 302. A jet nozzle 304 having a tapered cylindrical shape protrudes forward from the center of the front side of the closing body 303.
A fitting tubular portion 305 having a rectangular cross-section that can be fitted into the tubular portion 301 projects from the back surface of 3. The nozzle attachment 300 is fixed to the pump head 100 by fitting the base of the cylindrical body 301 into the foam passage 105 from the ejection port 104.

The tip opening of the jet nozzle 304 is the cylindrical body portion 30.
1 has a sufficiently smaller opening area than the tip opening. This third
In the embodiment of the present invention, as shown in FIG.
When 03 is rotated downward, the fitting cylinder portion 305 of the closing body 303 is fitted into the tip of the cylinder body portion 301, and the pump head 100 is pushed down to pump up, bubbles are ejected vigorously in a finely converged state.

On the other hand, as shown in FIG. 15, when the pump head 100 is pushed down and pumped up by rotating the closing body 303 upward to expose the tip end opening of the tubular body portion 301, the tip end opening of the tubular body portion 301 is opened. Thick foam is ejected from.

That is, in the case of the third embodiment, the ejection of bubbles is selected depending on whether the closing body 303 of the nozzle attachment 300 is used in the downwardly rotated state or the upwardly rotated state. You can change the form.

The cross-sectional shape of the cylindrical portion 301 is not limited to the rectangular shape, but is determined by the shape of the ejection port 104.

[0080]

As described above, according to the present invention,
An excellent effect that the ejection form of bubbles can be easily changed by rotating the outer cylindrical member of the pump head with respect to the inner cylindrical member or by rotating the closing body of the nozzle attachment up or down. Is played.

The pump head has a double-tube structure of an outer cylinder member and an inner cylinder member, and the position of the outer cylinder member is such that the ejection port of the outer cylinder member can be closed without being connected to any of the ejection holes of the inner cylinder member. When provided, it is possible to prevent the bubbles in the pump head from drying, and as a result, it is possible to prevent clogging of the foaming member and form the bubbles stably and satisfactorily. That is an excellent effect.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a container with a foam jet pump according to a first embodiment of the present invention, showing a state in which a pump head is located at an upper limit.

FIG. 2 is a vertical cross-sectional view of a container with a foam jet pump according to the first embodiment of the present invention, showing a state in which a pump head is pushed down partway.

FIG. 3 is a vertical cross-sectional view showing an enlarged main part of the container with a foam jet pump according to the first embodiment of the present invention.

FIG. 4 is an enlarged vertical cross-sectional view showing an essential part of the container with a foam jet pump according to the first embodiment of the present invention.

FIG. 5 is a partial cross-sectional view of the pump head of the container with the foam jet pump according to the first embodiment of the present invention.

FIG. 6 is a partial cross-sectional view of the pump head of the container with the foam jet pump according to the first embodiment of the present invention.

FIG. 7 is a vertical cross-sectional view of an engaging portion between a pump head and a mounting cylinder of the container with a foam jet pump according to the first embodiment of the present invention.

FIG. 8 is a diagram showing a bubble ejection state of the container with a bubble ejection pump according to the first embodiment of the present invention.

FIG. 9 is a diagram showing a bubble ejection state of the container with a bubble ejection pump according to the first embodiment of the present invention.

FIG. 10 is a partial cross-sectional view of a pump head of a container with a foam jet pump according to a second embodiment of the present invention.

FIG. 11 is a partial cross-sectional view of a pump head of a container with a foam jet pump according to a second embodiment of the present invention.

FIG. 12 is a vertical cross-sectional view of a container with a foam jet pump according to a third embodiment of the present invention, showing a state in which a pump head is located at an upper limit.

FIG. 13 is an exploded perspective view of a pump head and a nozzle attachment of a container with a foam jet pump according to a third embodiment of the present invention.

FIG. 14 is a diagram showing a bubble ejection state of a container with a bubble ejection pump according to a third embodiment of the present invention.

FIG. 15 is a diagram showing a bubble ejection state of a container with a bubble ejection pump according to a third embodiment of the present invention.

[Explanation of symbols]

 1 Container Body 2 Mouth Neck 10 Foam Jet Pump 22 Large Cylinder (Air Cylinder) 24 Small Cylinder (Liquid Cylinder) 46 Gas-Liquid Mixing Chamber 50 First Piston 60 Second Piston 100 Pump Head 104 Jet Outlet 110 Outside Cylindrical member 113 Jet outlet 115a Opening 120 Inner tubular member 121 Small diameter portion (foam distribution portion) 121a Jet hole 121b Jet hole 130 Foaming unit 133 Mesh (foaming member) 300 Nozzle attachment 301 Tubular portion 302 Hinge portion 303 Closure body 304 Jet nozzle

Claims (4)

[Claims] 1. A foam ejection pump is attached to the mouth and neck of a container body, and the foam ejection pump comprises a liquid cylinder in which a first piston slides inside, and an air cylinder in which a second piston slides inside. , A pump head provided with an ejection port and connected to the first piston and the second piston to drive both pistons, and a gas-liquid mixture in which the liquid delivered from the liquid cylinder and the air delivered from the air cylinder join together A chamber and a foaming member installed between the ejection port and the gas-liquid mixing chamber, and the liquid inside the container and the outside air are brought together in the gas-liquid mixing chamber by pushing down the pump head, and the foaming member is passed through. In a container with a foam jet pump that foams and jets in a foam state from a jet port, the pump head has a double pipe structure including an inner tubular member and an outer tubular member that are rotatably fitted to each other. However, the ejection port is provided in the outer tubular member, the inner tubular member is provided with a foam circulation portion located on the downstream side of the foaming member, the foam circulation portion is provided with a plurality of ejection holes having different diameters, By relatively rotating the outer tubular member and the inner tubular member, the ejection port of the outer tubular member is positioned in front of and is in communication with the ejection port of one of the inner tubular members, and the other ejection port is closed. A container with a foam jet pump characterized by: 2. The foam jet pump according to claim 1, further comprising a position of an outer tubular member capable of closing the jet outlet without connecting it to any of the jet holes of the inner tubular member. container. 3. A foam jet pump is attached to the mouth and neck of the container body, and the foam jet pump comprises a liquid cylinder in which a first piston slides inside, and an air cylinder in which a second piston slides inside. , A pump head provided with an ejection port and connected to the first piston and the second piston to drive both pistons, and a gas-liquid mixture in which the liquid delivered from the liquid cylinder and the air delivered from the air cylinder join together A chamber and a foaming member installed between the ejection port and the gas-liquid mixing chamber, and the liquid inside the container and the outside air are brought together in the gas-liquid mixing chamber by pushing down the pump head, and the foaming member is passed through. In a container with a foam ejection pump that foams and ejects in the form of foam from the ejection port, a nozzle attachment that can reduce the diameter of the bubble ejected at the ejection port of the pump head Foam jet pump with a container, characterized in that mounted. 4. The nozzle attachment includes a tubular portion attached to the ejection port, and a closing body rotatably provided at the tip of the tubular portion via a hinge to open and close the tip opening of the tubular portion. A container with a foam jet pump, wherein the closing body is provided with a jet nozzle having a diameter smaller than that of a tip end opening of the cylindrical body portion.